Some standard content:
ICS 71.120;25.220.50
Registration No.: 10092—2002
Chemical Industry Standard of the People's Republic of China
HG 2432-2001
Technical Conditions for Sugar Glass Equipment
Quality standard of glass-lined equipment for industry2002-01-24 Issued
2002-07-01 Implementation
State Economic and Trade Commission Issued
HG2432—2001
This standard is a mandatory standard.
This standard is a revision of the mandatory chemical industry standard HG2432—1993 "Technical Conditions for Sugar Glass Equipment". The main technical differences between this standard and HC2432-1993 are: the addition of "applicable to tower sections, pipelines, and pipe fittings" in the "scope". The addition of items such as surface cracks, surface partial peeling, surface scratches, dark bubbles, fish scale explosions, surface color, powder tumors, surface particles and repairs, and burning marks in the "definition". The empirical calculation formula for the wall thickness of the glass equipment base is added in 5.1.3 and 5.1.5. The acid and alkali resistance of the general-purpose pond glass glaze is improved in 5.2.4, and the acid-resistant and alkali-resistant sugar glass glaze are added. In 6.3, it is clarified that pond glass equipment can be exempted from low-carbon steel product welding test plates except for special circumstances. In 6. In accordance with Article 87 of the "Regulations on Safety Technical Supervision of Pressure Vessels", specific provisions are made in Section 4 for the non-destructive testing of the upper and lower connecting rings and jacket assembly welded joints on glass-carrying equipment, and the connecting pipe welded joints of glass-carrying equipment with a nominal diameter less than 250mm. In Section 7.2, the shape and position tolerances of the equipment are mentioned, and the shape and position tolerance requirements for tower sections, pipelines, and pipe fittings are increased. In Section 7.4, the maximum number of pinholes allowed for repair on the effective working surface of glass-carrying equipment is reduced. In Section 8.3, the water pressure test requirements for glass-carrying equipment of different specifications and pressure levels are clarified. This standard will replace HG2432-1993 from the date of implementation. Appendix A of this standard is the standard for difficult Appendix B is a suggested appendix. This standard was proposed by the Policy and Regulations Department of the former State Bureau of Petroleum and Chemical Industry. This standard is under the jurisdiction of the National Technical Committee for Standardization of Glass Equipment. The main drafting units and drafters of this standard: Chemical Machinery and Automation Research and Design Institute of the Ministry of Chemical Industry Shanghai Baoshi Industrial Tangci Co., Ltd. Suzhou Sutang Chemical Equipment Industrial Company
Liaoyang Pharmaceutical Machinery Co., Ltd.
Jiangsu Luoyang Yunlong Chemical Equipment (Group) Company Jiangsu Yangyang Chemical Equipment Manufacturing Co., Ltd. Participating drafting units and drafters of this standard: Suzhou Boiler and Pressure Vessel Inspection Institute Zibo Zichuan Sealing Factory
Wang Puxun 、Sang Linchun
Dai Xingzheng
Zhou Tong, Zou Rongxing
Yang Qingwu
Hu Quanming
Yuan Wangqi
Yan Xinhua
The other people who participated in the drafting of this standard are: Xiang Longwen, Wang Yunfu, Qian Yuanlong. This standard was first issued in 1989, revised for the first time in 1979, revised for the second time in 1987, and revised for the third time in 1993. This standard is interpreted by the National Technical Committee for the Promotion of Glass Equipment Standards 1
1 Scope
Chemical Industry Standards of the People's Republic of China
Technical Conditions for Glass Equipment
Quality Standard of glass-inedl equipment for industry HG 2432—2001
Replaces HG 2432—1993
This standard specifies the basic requirements for the design, manufacture, testing, inspection, acceptance, packaging and transportation of sugar glass equipment. This standard is applicable to sugar glass equipment, tower sections, pipelines and fittings with a design pressure less than or equal to 1.0MPa, a design temperature of -20℃ and less than or equal to 200℃.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest version of the following standards. GB150—1998 steel pressure vessels
GB/T 79871987
GB/T 7988—1987
GB/T 7989—1987
GB/T 7990--1987
GB/T 7991—1987
GB/T 7993 —1987
GB/T 7994 --- 1987
GB/T 7995--1987
GB/T 8923—1988
GB/T 9439 :1988
GB/T 9988—1988
GB/T 9989—1988
HG/T 2637---1994
HG/T 3105—1987
Test method for resistance of sugar glass layer to sudden temperature change. Determination of corrosion resistance of glass glaze to sodium hydroxide solution. Determination of corrosion resistance of glass glaze to boiling hydrochloric acid. Test method for mechanical impact resistance of glass layer.
Measurement of thickness of glass layer.
Electromagnetic method.
High voltage test method for sugar glass equipment used under corrosive conditions. Water pressure test method for glass equipment.
Test method for air tightness of glass equipment.
Rust grade and rust removal grade of steel surface before painting. Grey cast iron parts.
Test method for acid resistance of porcelain.
Test method for resistance of wall porcelain to citric acid at room temperature. Geometric size detection method of glass parts.
Preparation of steel plate sugar glass test pieces.
B 4708--2000
Qualification of welding process for steel pressure vessels
JB/T4709-2000 Welding specification for steel pressure vesselsJB4730-1994 Nondestructive testing of pressure vesselsJB/T4735-1997 Steel welded atmospheric pressure vessels3 Definitions
This standard adopts the following definitions:
3.1 Tan glass
Vitreous glaze with special properties formed on a metal substrate by high-temperature sintering. Approved by the State Economic and Trade Commission on January 24, 2002 and implemented on July 1, 2002
3.2 Strongly corrosive media
HG 24322001
In this standard, it refers to various organic and inorganic acidic media (excluding fluoride ions) that can be almost completely ionized in aqueous solution, except for oxyfluoric acid, hot concentrated phosphoric acid, and strong alkali.
3.3 Weakly corrosive media
In this standard, it refers to weak acids, weak bases and neutral salts that can only be partially ionized in aqueous solution, such as beer, beverages, washing liquid. 3.4 Effective working surface
It refers to the glass surface except for the 5mm edge of the flange of the pipe mouth with a nominal diameter of less than 250mm, the 10mm edge of the flange of the nominal diameter of more than 250mm, and the 10mm upper end of the sealing section of the stirring shaft. 3.5 Pinhole
It refers to the small hole on the effective working surface of the glass layer that is penetrated by high voltage and reaches the metal matrix. 3.6 Surface crack
The crack that appears on the surface of the glass layer after firing due to tensile stress. 3.7 Local peeling of the surface
The phenomenon of local peeling of the surface of the glass layer. 3.8 Surface injury
The scar caused by friction on the surface of the glass layer. 3.9 Dark bubbles
Bubbles in the shallow surface layer where the gas that has not escaped from the glass layer gathers. 3.10 Fish scale explosion
Fish scale explosion on the surface of the glass layer after firing and cooling. 3.11 Surface color
The depth and brightness of the color of the glass layer surface. 3.12 Powder tumor
Local accumulation of raised axle tumors on the surface of the glass layer after firing. 3.13 Surface particles
Impurities adhering to the surface of the glass layer.
3.14 Repair
Refers to the repair of the damaged glass layer using tantalum and tetrafluoroethylene materials. 3.15 Burning marks
Local deformation marks caused by the burning bracket and fixture on the surface of the equipment. 4 Types and codes
Glass equipment can be divided into equipment for strong corrosive media and equipment for weak corrosive media according to the conditions of use. According to the use pressure, it can be divided into normal pressure and pressure equipment.
4.1 Equipment used for highly corrosive media, its code is CH. 4.1.1 Pressure equipment used for highly corrosive media, with a maximum working pressure greater than or equal to 0.1 MPa (including vacuum equipment with a vacuum degree greater than or equal to 0.02 MPa), its code is CHP-X. Where × is the design pressure, for example, if the design pressure is 0.25 MPa, its code is CHP-0.25.
4.1.2 Equipment used for highly corrosive media, with a maximum working pressure less than 0.1MPa (including vacuum equipment with a vacuum degree less than 0.02MPa), the code name is CHN.
4.2 Equipment for weakly corrosive media (such as beer cans, etc.), the code name is WCH. 4.2.1 Pressure equipment for weakly corrosive media with a maximum working pressure greater than or equal to 0.1MPa (including vacuum equipment with a vacuum degree greater than or equal to 0.02MPa), the code name is WCHP-X (X is the same as 4.1.1). 4
HG2432.-2001
4. 2.2 Atmospheric pressure equipment for weakly corrosive media with a maximum working pressure less than 0. 1MPa (including vacuum equipment with a vacuum degree less than 0. 02MPa), the code name is WCHN.
5 Design
5. 1 Design
5.1.1 The design unit engaged in sugar glass equipment must have a comprehensive design quality management system. The design unit engaged in the design of sugar glass pressure vessels must hold the corresponding pressure vessel design unit approval certificate approved by the Quality and Technical Supervision Department. The design unit shall be responsible for the design quality. 5.1.2 For the design of standard sugar glass equipment, its design number, volume, size and main structure shall comply with the relevant national standards and industry standards listed in Appendix B (suggestive Appendix). When the maximum working pressure of the sugar glass stirring container is greater than or equal to 0.1 MPa, a mechanical seal should be selected. For the design of sugar glass products with special structures proposed by users, in principle, the relevant sugar glass equipment parts and components standards listed in the Appendix (suggestive Appendix) should be used first.
5.1.3 In addition to the internal pressure strength calculation and external pressure stability verification of the wall thickness of the components of the jacketed pressure glass equipment according to GB150: the requirements for the high temperature strength of the equipment matrix during the firing process and the influence of deformation during firing should be fully considered, and the basic requirements of the firing process should be met. The wall thickness value calculated with reference to the empirical formula of glass equipment (8=0.008D; + 3mm, D is the inner diameter of the equipment, unit mm) should be taken. 5.1.4 The wall thickness of the components of pressure-carrying glass equipment without jackets shall be calculated according to the internal pressure strength of GB 150, and the wall thickness calculated by the empirical formula in 5.1.3 shall be taken.
5.1.5 The wall thickness of the components of normal pressure sugar glass equipment shall take into account the requirements for the high temperature strength of the equipment base during the firing process and the influence of deformation during firing, and meet the basic requirements of sugar firing technology. And the wall thickness calculated by the empirical formula (-0.008D+1tm, D; is the inner diameter of the equipment, unit mm) shall be taken with caution.
5.1.6 There shall be no discontinuous structure on the glass side of the equipment base, and all corners shall be smoothly transitioned, with the arc radius greater than 6mm. All connected parts shall be aligned with the glass side as a principle. The thickness ratio of the base material used for the same equipment shall not be greater than 3, and the transition shall be gradual. 5.2 Materials
5.2.1 Steel
5.2.1.1 The chemical composition and room temperature mechanical properties of carbon structural steel and low alloy steel plates and steel pipes used to prepare the glass equipment pressure component matrix shall comply with the provisions of Table 1.
Table 1 Chemical composition and room temperature mechanical propertiesWww.bzxZ.net
Tensile strength, MPa
Carbon strength aa, MPa
Elongation%
Note: For steel with a carbon content greater than 0.19%, a paintability test or a surface decarburization treatment shall be carried out. Only after passing the test can it be used to manufacture the glass equipment matrix.
When the lower limit of the equipment operating temperature is 0C, the performance of the selected 20, Q235-A, and Q235-B steels shall comply with the provisions of Table 1 and the selection shall be controlled. For Q235-C.10, 15 high-quality carbon steel, the equipment can be directly selected. When the lower limit of the overflow temperature is lower than 0℃ and higher than -20℃, 20R, 20g, and 16MnR should be selected. If 20 is selected, the impact energy of Q235 series steels at their lowest design temperature must also be measured, and their Akv values should comply with the provisions of Table 2. Table 2 Impact energy values at low temperatures
Standard tensile strength lower limit of steel, MPa
>450~515
Average impact energy of three samples Akv, J, 10 nm×10 mm×55 mn18
For steel used to manufacture pond glass substrates, mechanical properties tests after heat treatment similar to the sintering process should be carried out when necessary as a design basis.
HC 2432—2001
5.2.1.2 The carbon content of the base material used to prepare atmospheric pressure glass equipment shall comply with the provisions of Table 1, and the other components and mechanical properties shall comply with the corresponding national standards or industry standards. 5.2.1.3 The materials of non-glass parts and accessories on atmospheric pressure glass equipment shall comply with the corresponding national standards or industry standards. 5.2.1.4 For the base of atmospheric pressure glass equipment, steels such as 09MnTi, 09MnTiNb, 08HT suitable for coating can also be selected. The selection of other steels must pass the prescribed technical appraisal and obtain approval, and their technical conditions and scope of use shall be indicated on the design drawings or technical documents.
5.2.1.5 The steel shall be accompanied by the steel quality certificate of the steel production unit. The atmospheric pressure glass equipment manufacturing unit shall inspect and accept the steel according to the quality certificate and re-inspect it when necessary. The surface quality of the steel shall comply with the corresponding national standards and industry standards. 5.2.1.6 When the thickness of the steel plate used to make the shell of the glass container exceeds the following requirements, each sheet shall be subjected to ultrasonic testing, and the quality shall meet the requirements of Grade II specified in JB4730.
a) Q235-A steel plate with a thickness greater than 18mm; b) Q235-B steel plate with a thickness greater than 22mm; c) Q235-C steel plate, 20 and 16MnR steel plate with a thickness greater than 30mm. 5.2.1.7 The substitution of steel for pressure glass equipment shall be carried out in accordance with Appendix A of GB150 (the appendix of the standard). The substitution of steel for Changletang glass equipment shall be carried out in accordance with Appendix A of JB/T4735 standard. 5.2.2 Welding materials
According to the type of steel, select the corresponding welding rod, welding wire and welding flux according to the requirements of the welding procedure JB/T4709. Their quality shall meet the requirements of the corresponding standards. Welding materials must have quality certificates and clear and firm markings. 5.2.3 Cast iron
The quality of the cast iron matrix used to manufacture glass parts shall comply with the provisions of HT200 grade in GB/T9439. Its chemical composition shall meet the requirements of Table 3.
Table 3 Chemical composition of cast iron for glass
Graphite 2.5
0. 5~1. 3
Note: The sulfur content in the raw material of pig iron for casting should be less than 0.05%. 5.2.4 Sugar glass glaze
2~2, 6
0. 1～ 0. 7
5.2.4.1 Sugar glass glaze production: The unit shall have a sound manufacturing quality management system and complete testing equipment, and conduct physical and chemical performance tests on sugar glass glaze by batch.
5.2.4.2 The glass glaze shall be accompanied by the glass glaze quality certificate and instruction manual of the manufacturer. In addition to the various properties in Table 4, the quality certificate should also include the expansion coefficient, melt flow, and burning temperature range. The glass equipment manufacturing unit shall inspect the glass glaze quality according to the quality certificate. If necessary, re-inspection and random inspection shall be carried out. 5.2.4.3 The quality of the glass glaze shall be evaluated after the test piece is made according to the provisions of HG/T3105. Its quality shall meet the requirements of Table 4. Table 4 Physical and chemical properties of glass specimens
20% boiling hydrochloric acid corrosion resistance for 48h
General type
≤1. 6g/(m*. d)
≤0. 5g/(m2d)
0.1N.80℃ sodium chloride corrosion resistance for 24h≤5.0g/(m2.d))≤8.0g/(m2.d)) Lecithin acid resistance
Sodium carbonate resistance
Temperature difference resistance
Mechanical impact resistance
2220×10-3J
2180℃
2220X10-3
Alkali resistance
≤3. 0g/(m2 - d) :
≤2. 5g/(m2 +d)
2220×10-9J
>200℃
>220×10-]
Test method
GB/T7989
CB/T9989
GB/T 9988
GB/T7 987
GB/T7990
HG 2432—2001
5.2.4.4 The quality index of the glaze used in special occasions shall be formulated by the supply and demand parties through negotiation and shall be marked on the design drawings or technical documents.
6 Manufacturing
The manufacturing unit of glaze equipment shall have a complete manufacturing quality management system and hold a glaze equipment production license approved by the quality and technical supervision department. The manufacturing of pressure vessels shall also hold the corresponding pressure vessel manufacturing license. And ensure the safety of pressure vessel products.
6.1 Welding process assessment
6.1.1 Before manufacturing glaze equipment, welding process assessment shall be carried out in accordance with JB4708. And compile the "Welding Procedure Specification" according to JB/T4709. 6.1.2 After the reverse assessment according to 6.1.1 is qualified, take a group of test plates that have been welded according to the welding process in 6.1.1 and go through the simulated burning process. Then conduct the welding joint performance test to confirm the mechanical properties of the welding joint after multiple thermal stresses. 6.1.3 The welding joints of the half pipe or the upper and lower connecting rings and the cylinder must be evaluated according to 6.1.1 and 6.1.2. The welding joints of the jacket and the upper and lower connecting joints must be evaluated according to 6.1.1, and the "Welding Procedure Specification" for these welding joints must be compiled. If the secondary factors of welding change, the "Welding Procedure Specification" needs to be re-compiled. 6. 2 Assembly and welding
6.2.1 According to the principle of priority assembly of the glass surface, when the glass parts are internal parts, such as the head, high neck flange and the cylinder, they should be aligned on the inside; when they are external parts, they should be aligned on the outside. The misalignment b is ≤10%+1mm (3 is the thickness of the steel plate, mm, the same below), and not more than 3mm, and the edge angle Es is 10%+2mm.
6.2.2 The pipe mouth weld or pipe weld of the glass equipment should not intersect or be tangent to the head plate weld or other main body welds, and the centers of the two welds are required to be more than 50mm apart.
6.2.3 Positioning during assembly Position welding should be performed on the non-glass side. 6.2.4 The grounding wire is not allowed to be directly placed on the side of the glass surface. No arc burn marks are allowed on the glass side. The arc should be inside the groove or use an arc plate.
6.2.5 The weld height on the glass side should be controlled within 0~2mm to facilitate repair and finishing. 6.3 Product welding test plate
6.3.1 Glass-carrying equipment can be exempted from making low-carbon steel product welding test plates. However, those who meet the following conditions should make product welding test plates. a) If the production is interrupted for more than half a year, one product should be selected to make a product welding test plate. b) The test plate is marked on the drawing and required by the user. 6.3.2 The welding test plate shall be inspected and evaluated in accordance with Appendix E of GB 150. Its impact test shall be in accordance with 5.2.1.1 of this standard. 6.4 Nondestructive testing
6.4.1 Before nondestructive testing, the geometric dimensions and appearance quality of the welded joints shall be inspected and qualified. There shall be no defects such as cracks, pores, pits and slag inclusions on the surface. The slag and spatter shall be removed.
6.4.2 The Class A and Class B welded joints of the pressure components of the glass equipment, including the welded joints of the pipe mouth with a nominal diameter greater than or equal to 250mm, and the Class A and Class B welded joints before assembly shall be subjected to X-ray testing. The testing ratio shall be in accordance with GB15 0. Local inspection must include each intersecting welded joint (including the welded joint where the pipe mouth weld with a nominal diameter less than 250 Ⅱ Ⅱ intersects with the plate weld). For embedded pipe welded joints with a nominal diameter less than 250mm, X-ray inspection can be exempted. 6.4.3 The X-ray inspection ratio of normal pressure equipment welding joints is 10%. 6.4.4 The welded joints connecting the half pipe or the upper and lower connecting rings to the simplified body can be exempted from non-destructive testing, but must be strictly implemented in accordance with the welding process regulations specified in 6.1.3. In order to avoid leakage during the water pressure test after the tank is burned and assembled, a kerosene leakage test should be carried out after welding. 6.4.5 The welded joints of the upper and lower connecting rings and the central sleeve assembly can be exempted from non-destructive testing, but must be strictly implemented in accordance with the welding process regulations specified in 6.1.3, and have corresponding supervision procedures to ensure quality. 6.4.6 X-ray inspection of welding joints shall be carried out in accordance with JB4730. The qualified level of pressure vessels shall be implemented in accordance with GB150 and the drawings. Normal pressure 7
penetrators of grade I are qualified.
6.5 Glass
HG 2432—2001
6.5.1 The welding joints and surfaces of the glass equipment base to be coated shall be polished and smooth, and the corners shall be smooth. 6.5.2 The overall pre-burning must be determined with reasonable process regulations and strictly implemented. 6.5.3 The surface quality of the substrate before coating shall meet the Sa3 level of spraying or blasting rust removal in GB/T8923 or the St3 level of manual and moving tool rust removal.
6.5.4 During the sintering process, the sintering process regulations determined according to the selected different glass shall be strictly implemented and recorded. 6.5.5 During the whole burning process of the glass equipment base, all welding joints and surfaces shall be monitored, and defects can be repaired on site. 7. Quality and technical indicators of glass equipment, tower sections, pipelines and pipe fittings 7.1 Appearance quality of glass room
At a distance of 250n from the glass installation surface, use a 36V, 60W lamp to self-test with normal vision. There should be no following defects: a) There should be no cracks, scales, or peeling of the fan on the surface of the glass layer; b) The color of the surface of the glass layer is uniform, without obvious scratches, dark bubbles, and pulverization; d) There should be no more than three particles on the glass layer per square meter, and the area of each particle should be less than 4mm. 7.2 Geometric tolerances of glass equipment, tower sections, pipelines and pipe fittings The geometric tolerances of glass equipment, tower sections, pipelines and pipe fittings shall be tested according to IIG/T2637, and the results shall meet the requirements of Table 5 and Table 6. Table 5 Geometric tolerances of glass equipment
CHP WCHP
Difference in nominal diameters of tank body and cover flange
Maximum and minimum diameter difference of tank body and cover flangeFlatness of manhole flange and manhole cover
Maximum and minimum true diameter difference of tank body
Compression surface width of tank body and cover flange
DN≥1000
DN≤1600
DN>1600
Parallelism of pipe end flange of agitator shaft hole to tank flangeReducer support and center hole positionQuality of radial total runout of agitator sealing section
Radial runout of lower end of agitator
Symmetrical section of anchor wing of agitator
Straightness of thermometer sleeve
0.252 The welded test plate shall be inspected and evaluated according to Appendix E of GB 150. The impact test shall be carried out according to the requirements of 5.2.1.1 of this standard. 6.4 Nondestructive testing
6.4.1 Before nondestructive testing, the geometric dimensions and appearance quality of the welded joints shall be inspected and qualified. There shall be no defects such as cracks, pores, pits and slag inclusions on the surface. The slag and spatter shall be removed.
6.4.2 The Class A and Class B welded joints of the pressure-bearing components of the glass equipment, including the welded joints of the pipe mouth with a nominal diameter greater than or equal to 250mm, and the Class A and Class B welded joints before assembly shall be subjected to X-ray inspection. The inspection ratio shall be in accordance with GB150. The local inspection must include each intersecting welded joint (including the welded joint where the pipe mouth weld with a nominal diameter less than 250 II II intersects with the plate weld). For the embedded pipe welded joint with a nominal diameter less than 250mm, X-ray inspection can be exempted. 6.4.3 The X-ray inspection ratio of the welding joints of normal pressure equipment is 10%. 6.4.4 The welding joints connecting the half pipe or the upper and lower connecting rings to the simplified body can be exempted from non-destructive testing, but they must be strictly implemented in accordance with the welding process regulations specified in 6.1.3. In order to avoid leakage during the water pressure test after burning and assembly, a kerosene leakage test should be carried out after welding. 6.4.5 The welding joints assembled between the upper and lower connecting rings and the central sleeve can be exempted from non-destructive testing. They must be strictly implemented in accordance with the welding process regulations specified in 6.1.3, and there must be corresponding supervision procedures to ensure quality. 6.4.6 The X-ray inspection of the welding joints shall be carried out in accordance with JB4730, and the qualified level of pressure vessels shall be implemented in accordance with GB150 and the drawings. Normal pressure 7
penetrator level I is qualified.
6.5 Glass
HG 2432—2001
6.5.1 The welding joints and surfaces of the glass equipment base to be coated should be polished and smooth, and the corners should be rounded and smooth. 6.5.2 The overall pre-firing must be carried out in a reasonable process and strictly implemented. 6.5.3 The surface quality of the substrate before coating should meet the Sa3 level of spraying or blasting rust removal in GB/T8923 or the St3 level of manual and moving tool rust removal.
6.5.4 During the sintering process, the sintering process specifications determined according to the selected different glass should be strictly followed and recorded. 6.5.5 During the whole burning process of the glass equipment base, all welding joints and surfaces shall be monitored, and defects can be repaired on site. 7. Quality and technical indicators of glass equipment, tower sections, pipelines and pipe fittings 7.1 Appearance quality of glass room
At a distance of 250n from the glass installation surface, use a 36V, 60W lamp to self-test with normal vision. There should be no following defects: a) There should be no cracks, scales, or peeling of the fan on the surface of the glass layer; b) The color of the surface of the glass layer is uniform, without obvious scratches, dark bubbles, and pulverization; d) There should be no more than three particles on the glass layer per square meter, and the area of each particle should be less than 4mm. 7.2 Geometric tolerances of glass equipment, tower sections, pipelines and pipe fittings The geometric tolerances of glass equipment, tower sections, pipelines and pipe fittings shall be tested according to IIG/T2637, and the results shall meet the requirements of Table 5 and Table 6. Table 5 Geometric tolerances of glass equipment
CHP WCHP
Difference in nominal diameters of tank body and cover flange
Maximum and minimum diameter difference of tank body and cover flangeFlatness of manhole flange and manhole cover
Maximum and minimum true diameter difference of tank body
Compression surface width of tank body and cover flange
DN≥1000
DN≤1600
DN>1600
Parallelism of pipe end flange of agitator shaft hole to tank flangeReducer support and center hole positionQuality of radial total runout of agitator sealing section
Radial runout of lower end of agitator
Symmetrical section of anchor wing of agitator
Straightness of thermometer sleeve
0.252 The welded test plate shall be inspected and evaluated according to Appendix E of GB 150. The impact test shall be carried out according to the requirements of 5.2.1.1 of this standard. 6.4 Nondestructive testing
6.4.1 Before nondestructive testing, the geometric dimensions and appearance quality of the welded joints shall be inspected and qualified. There shall be no defects such as cracks, pores, pits and slag inclusions on the surface. The slag and spatter shall be removed.
6.4.2 The Class A and Class B welded joints of the pressure-bearing components of the glass equipment, including the welded joints of the pipe mouth with a nominal diameter greater than or equal to 250mm, and the Class A and Class B welded joints before assembly shall be subjected to X-ray inspection. The inspection ratio shall be in accordance with GB150. The local inspection must include each intersecting welded joint (including the welded joint where the pipe mouth weld with a nominal diameter less than 250 II II intersects with the plate weld). For the embedded pipe welded joint with a nominal diameter less than 250mm, X-ray inspection can be exempted. 6.4.3 The X-ray inspection ratio of the welding joints of normal pressure equipment is 10%. 6.4.4 The welding joints connecting the half pipe or the upper and lower connecting rings to the simplified body can be exempted from non-destructive testing, but they must be strictly implemented in accordance with the welding process regulations specified in 6.1.3. In order to avoid leakage during the water pressure test after burning and assembly, a kerosene leakage test should be carried out after welding. 6.4.5 The welding joints assembled between the upper and lower connecting rings and the central sleeve can be exempted from non-destructive testing. They must be strictly implemented in accordance with the welding process regulations specified in 6.1.3, and there must be corresponding supervision procedures to ensure quality. 6.4.6 The X-ray inspection of the welding joints shall be carried out in accordance with JB4730, and the qualified level of pressure vessels shall be implemented in accordance with GB150 and the drawings. Normal pressure 7
penetrator level I is qualified.
6.5 Glass
HG 2432—2001
6.5.1 The welding joints and surfaces of the glass equipment base to be coated should be polished and smooth, and the corners should be rounded and smooth. 6.5.2 The overall pre-firing must be carried out in a reasonable process and strictly implemented. 6.5.3 The surface quality of the substrate before coating should meet the Sa3 level of spraying or blasting rust removal in GB/T8923 or the St3 level of manual and moving tool rust removal.
6.5.4 During the sintering process, the sintering process specifications determined according to the selected different glass should be strictly followed and recorded. 6.5.5 During the whole burning process of the glass equipment base, all welding joints and surfaces shall be monitored, and defects can be repaired on site. 7. Quality and technical indicators of glass equipment, tower sections, pipelines and pipe fittings 7.1 Appearance quality of glass room
At a distance of 250n from the glass installation surface, use a 36V, 60W lamp to self-test with normal vision. There should be no following defects: a) There should be no cracks, scales, or peeling of the fan on the surface of the glass layer; b) The color of the surface of the glass layer is uniform, without obvious scratches, dark bubbles, and pulverization; d) There should be no more than three particles on the glass layer per square meter, and the area of each particle should be less than 4mm. 7.2 Geometric tolerances of glass equipment, tower sections, pipelines and pipe fittings The geometric tolerances of glass equipment, tower sections, pipelines and pipe fittings shall be tested according to IIG/T2637, and the results shall meet the requirements of Table 5 and Table 6. Table 5 Geometric tolerances of glass equipment
CHP WCHP
Difference in nominal diameters of tank body and cover flanges
Maximum and minimum diameter difference of tank body and cover flanges Flatness of manhole flange and manhole cover
Maximum and minimum true diameter difference of tank body
Compression surface width of tank body and cover flange
DN≥1000
DN≤1600
DN>1600
Parallelism of pipe flange of agitator shaft hole to tank flange Reducer support and center hole position Quality of radial total runout of agitator sealing section
Radial runout of lower end of agitator
Symmetrical section of agitator anchor wing
Straightness of thermometer sleeve
0.251 000
±0.5% DN
±0.5% DN
0.3 packing seal)
Note, DN—nominal weight, PN—nominal pressure; D—flange outer diameter of tank flange, H—axle end height of agitator, B—width of agitator blade; L—length of thermometer sleeve.
Verticality of tower section flange to tower section axis
TIG 2432—2001
Positive and geometric tolerance of glass tower section and pipe 150~250
Verticality, parallelism, straightness of pipe flange to temporary flange C—tower expansion and pipeline straightness
Note: L is the length of tower section or pipeline, which is the tolerance value (see Figure 1). 25 ~-80
Nominal diameter DN
300~1 000
Pipelines. Fittings
Nominal diameter DN
100150
Figure 1 Geometric and positional tolerances of tower sections, pipelines and fittings 7.3 Physical and mechanical properties of sugar glass
The physical and mechanical properties of the sugar glass layer shall comply with the requirements of Table 7. Table 7 Physical and mechanical properties of glass layer Thickness of glass layer, mm High voltage test (pinhole detection), V Temperature resistance of equipment, 0. 8 ~2. 0 Cold shock 10 Heat shock 120 0. 8 ~2. 0 Cold shock 10 Heat shock 120 0. 6 -- 2. 0 Cold shock 110 Heat shock 120 0. 6 ~-2. 3 Cold shock 110 Heat shock 120 1 100 --1 600
200~250
Testing method
GR/T 7991
GB/T 7993
Appendix A
(Appendix of standard)
Note 1 The lower limit of the thickness of the glass layer after grinding can be relaxed to 0.6mm; when the equipment volume is ≥5kL, the upper limit of its thickness can be 2.3mm. 7.4 Number of pinholes
If pinholes appear on the effective working surface of the glass (except the flange sealing surface), it is allowed to be repaired with materials with physical and chemical properties not lower than that of the glass, such as nails and tetrafluoroethylene materials, and the number of pinholes shall not exceed the provisions of Table 8. Nominal volume, kL
*8-~12
>15--20
230-40
>40～60
8 Inspection and acceptance
Inspection and acceptance of sugar glass glaze
G 2432---2001
Table 8 Number of pinholes
Effective area of sugar glass surface, m\ (reference)
>24~31
31～35
>45-55
>55-67
>67 ~89
Number of pinholes
Sugar glass equipment manufacturers, whether they make their own or purchase sugar glass glaze from designated locations, shall conduct batch acceptance and regular inspection according to the indicators specified in 5.2.4 if they meet any of the following conditions.
8.1.1 When the amount of glass glaze used exceeds 5 tons within three months, it shall be inspected once every 5 tons. 8.1.2 When the amount of sugar glass glaze used does not exceed 5 tons within three months, it shall be inspected once every three months. 8.1.3 When using sugar glass glaze of a new brand and a new manufacturer, it shall be put into production after passing the inspection. 8.1.4 When the user requires inspection.
8.2 Inspection and acceptance of supporting parts of portable glass equipment. For supporting parts of portable glass equipment such as clamps, slip-on flanges, gaskets, thermometer sleeves, agitators, stuffing boxes, feed valves, mechanical seals, reducers, sight glass, etc., the main engine manufacturer shall strengthen quality control regardless of whether it is self-made or designated, and conduct inspection and acceptance according to the corresponding standards. 8.3 Delivery inspection
8.3.1 The appearance quality of the portable glass layer shall be inspected piece by piece according to the provisions of 7.1. 8.3.2 The dimensional tolerance and form and position tolerance of the glass parts, the thickness of the glass-carrying layer and the high voltage test shall be inspected piece by piece in accordance with the provisions of 7.2 and 7.3. The high voltage test is qualified when the effective working surface is non-conductive (except for the repair points of conductive materials such as buttons). 8.3.3 The water pressure test shall be carried out in accordance with GB/T 7994 standard, and the test pressure shall be 1.25 times the design pressure. 8.3.3.1 The water filling test may not be carried out for the sugar glass equipment without jacket at normal pressure. B.3.3.2 For the pond glass tower equipment with design pressure P less than or equal to 0.25MPa, the tower head and tower bottom shall be assembled for water pressure test. The tower section may not be subjected to water pressure test before leaving the factory (if it is equipped with a jacket, it shall be inspected in accordance with 8.3.3.3). 8.3.3.3 The jacket water pressure test must be carried out for the sugar glass equipment with a jacket. The water pressure test result shall show no leakage. For glass equipment with jackets, if necessary, the stability under the test pressure shall be checked according to the deformation of the inner cylinder and the thickness of the steel plate. If the stability requirements cannot be met, it shall be stipulated that during the hydraulic test of the jacket, a certain pressure must be maintained inside the cylinder at the same time so that the pressure difference does not exceed the allowable pressure difference during the entire hydraulic test. The allowable pressure difference shall be indicated on the product quality certificate. 8.3.3.4 The hydraulic pressure test of the assembled glass equipment shall be carried out in accordance with the provisions of Table 9. Table 9 Provisions for hydrostatic test of glass equipment
Pressure vessels with jackets
Nominal volume, L
21 000~5 000
>5 000
Design pressure of inner shell, MPa
Batch instead of unit
Each unit is made
Each unit is made
Each unit is made
Pressure vessels without jackets
Design pressure of micro-body, MPa
Batch instead of unit
Batch instead of unit
Each unit is made
Each unit is made
Each unit is made
Note: Batch instead of unit means that after 30 consecutive units of equipment have passed the hydrostatic test, the batch can be used to replace the unit with the approval of the technical person in charge of the manufacturing unit. Each batch consists of 15 units, and each batch consists of ·-units. If it fails, the water pressure test shall be resumed for each unit until 30 units are qualified in succession, and then the batch replacement shall be implemented. 10
HG2432—2001
8.3.4 After the water pressure test, the CII type equipment shall be subjected to a 10kV high voltage test and pass it, and the WCH type equipment shall be subjected to a 3kV high voltage test and pass it.
8.3.5 The air tightness test shall be inspected in accordance with the provisions of GB/T7995. For pressure equipment, the test pressure is 1.0 times the design H force. For vacuum equipment, the test pressure is 0.1MPa. The air tightness test result shall show no leakage. 8.3.6 For glass pressure vessels containing extremely or highly toxic media and designed to not allow trace leakage, each equipment shall be subjected to a jacket water pressure test, equipment water pressure test and air tightness test in sequence. If the user relocates the installation, a safety inspection and air tightness test shall be carried out before it is put into production and the user shall be allowed to use it only after it passes the safety inspection and air tightness test.
8.3.7 Only when the user makes a request, the equipment's resistance to rapid temperature change shall be tested according to Appendix A (Standard Appendix). 8.3.8 Glass equipment (unless otherwise required at the time of ordering) should be assembled and shipped as a whole after passing the test run. The assembled products should be inspected for appearance. The appearance should be smooth, regular and clean. After passing the inspection, spray protective paint, install signs, and issue product certificates. Each pipe opening and exposed glass surface should be protected with soft materials. Anti-rust oil should be applied to fasteners, stirring shaft heads, and pipe flange surfaces. 8.4 User re-inspection
If the user has a re-inspection clause in the contract, user re-inspection shall be carried out. The manufacturer should be required to send personnel to participate in the re-inspection. The re-inspection voltage for high voltage test of glass equipment is 7kV for CH and 2kV for WCH. The inspection voltage for CH equipment during arbitration inspection or third-party inspection is 10kV and 3kV for WCH equipment. 9 Nameplate
9.1 Nameplate installation location
The nameplate should be installed in a conspicuous location according to the specified requirements. 9.2 Nameplate content
The nameplate should at least include the following content:
Product name, product number, container type, product specification, design pressure, maximum working pressure, design temperature, pressure test pressure, container net weight, volume, medium, manufacturing date, manufacturing unit, glass equipment product production license number, pressure vessel manufacturing license number, equipment number, registration number.
9.3 Factory documents
Sugar glass pressure vessels should provide the following technical documents and information to users when leaving the factory: a) Product instruction manual; b) Product certificate; c) Product quality certificate; d) Pressure vessel product safety and quality supervision inspection certificate; d) Completion drawing; f) Random accessories and parts list.
9.3.1 The content of the product instruction manual should include: a general introduction to the applicable scope and inapplicable scope of this model product, transportation, installation, precautions in use, and repair, maintenance and storage certificate. 9.3.2 The content of the product certificate and product quality certificate should include: performance indicators of the main raw materials, test results of each main component. 9.3.3 The completion drawing should be stamped with the design unit qualification seal and the workmanship seal. 9.3.4 All factory documents should be sealed in a plastic bag with the packing list and placed inside the pipe mouth that is easy to access, and marked on the outside. 9.4 Packaging and transportation
9.4.1 All pipe openings and exposed glass surfaces must be strictly protected. If agitators, thermometer sleeves, pipe fittings, valves, etc. need to be packed and shipped separately, they should be fixed in the box to avoid displacement and damage during transportation, and marked with "handle with care" and "upward". 9.4.2 For bare equipment, the bottom bracket must be stable, and there should be enough contact surface between the bracket and the equipment. The equipment should be tightened and fixed on the bracket around the four sides, and marked with "handle with care", "do not invert", "do not hit" and other eye-catching marks. 11
A. 1 Cold shock of equipment
HG 2432--2001
Appendix A
(Appendix to the standard)
Test method for the sudden change resistance of glass equipment. Steam is passed into the jacket of the equipment to gradually raise the temperature of the jacket to 110℃. After maintaining for 10 minutes, tap water is quickly poured to the bottom of the equipment (near the discharge port). The amount of water poured each time is 2L. It is poured every 5 minutes and poured to different parts 10 times in total. Finally, the voltage resistance test is carried out according to the test voltage specified in 8.3.4 of this standard. The glass surface is qualified if it is not conductive. A. 2 Thermal shock of equipment
Under room temperature, continuously inject tap water into the jacket of the equipment to make the jacket temperature reach the temperature of tap water. After maintaining for 20 minutes, quickly pour hot oil 120℃ higher than the tap water temperature to the bottom of the equipment. The amount of oil poured each time is 0.5L. Pour it once every 5 minutes. Pour it to different parts 10 times in total. Finally, conduct a high voltage test according to the test voltage specified in 8.3.4 of this standard. If the sugar glass surface is not conductive, it is qualified. 12
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