This standard specifies the design, manufacture, inspection, marking, packaging, transportation and other requirements of deaerators. JB/T 10325-2002 Technical requirements for boiler deaerators JB/T10325-2002 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 10325--2002
Technical Specifications for Boiler Deaerators
Specification for boiler deaerators2002-07-16Published
2002-12-01Implementation
Published by the People's Social Security Bureau and the State Economic and Trade CommissionForeword
Model application documents
Da Huo Yi
Deaerator structure and appearance
4-way deaerator ..
4.7 Double-head vertical exhaust gas separator
Output exhaust gas separator
Main equipment exhaust gas separator
Design requirements for exhaust gas separator
Coating equipment manufacturing and inspection and supervision
Hot and cold working shape
Heat treatment
Production ratio test
Non-destructive testing
Water reduction inspection
Inspection methods
Painting, packaging and transportation
Output! Technical documents at the time of transportation
,
horizontal deaerator
double head vertical degassing, etc.
vertical spray deaerator
description of dangerous deaerator
drainage plate head
transparent plate and two plate joint head
green shell or spherical head
Figure 8 energy-saving long gland test room
Figure 9 precision head main size!
Figure 10 inspection of deaerator shell
Figure 11 single! Figure 12: Misalignment of composite plate
JB/T10325-2002
JB/T10325-2C02
Figure 13: Single-sided and double-sided thick plate
Inspection of inner or outer sample.
Inspection of the correct angle of the butt-welded circumferential joint, inspection of the large inner diameter and the small inner diameter on the same section, bolt hole cover of the flange
Figure 8A, B type joint welding height
Power generation Table of oxygen index of deaerator outlet of boiler [
Industrial steel furnace deaerator outlet oxygen index old shell 1. Process reduction
Table 4 Head stamping process reduction
Zhi 5, Deaerator pressure component material standard
Table 5 Spherical shell or head main size difference
Table excerpt circular head main size small maintenance
Zhi 8 Light body on the number of joints
Single layer steel plate side misalignment
Table 10 Water tank segment outer circumference center difference. Calculate the residual welding key of 1A and 2A joints,
JB/T10325-2002
This standard is based on the technical supervision of pressure vessel change regulation? , GB150 Power plant deaerator safety technical standards are based on the current standards: non-combined with the structural characteristics of the deaerator. The standard is formulated by the China Machinery Industry Federation. This standard is issued by the Boiler Water Treatment Equipment Research Institute and is under the jurisdiction of: 1 Hai Power Equipment Co., Ltd., Zhongzhou Steam Turbine Factory, Wuxi Huaguang Boiler Co., Ltd. (no need Qinzhou This standard is drafted by: Chen, Bi, Xuan Chunni, Yao Meichu, Wang Zhengde, 1 Scope
Technical conditions for boiler deaerators
This standard specifies the design, manufacture, inspection, marking, packaging, transportation, etc. of deaerators. JB/T1Q325--2002
This standard applies to -F thermal and nuclear power single-unit customer panels -F00MW rated units 1 The operating pressure of the heat remover is not less than 0.IMPa. For the steam type 2SMW and the atmospheric heat remover of the steam turbine unit and the secondary circuit deoxygenator of the PWR nuclear power plant, the following methods can be used as reference.
2 Normative referenced documents
The following clauses in the text are applicable to the terms of this standard or the date of application of the document, and all subsequent amendments are included: the content of the standard is not included: or the revision does not create a standard rate standard, however, the parties involved in the negotiation can use the standard to determine whether it is acceptable. New version. For any undated referenced document, the latest version shall apply to this standard. Technical Supervision Specification for Safety of Pressure Vessels GB150-1908 Steel Pressure Vessels GR/T983-1995 Coin Welding Rods GB118(4-2(UU)-General Specification for Linear Angular Tolerance GB3087-1994 Seamless Steel Tubes for Boilers in Low and Medium Industries GB/T5117-1995 Steel Welding Rods GH6654-1996 Steel Plates for Pressure Vessels GB 8:63—1999 Safety requirements for non-front pin pipes for conveying pipes GB122411989
B149S7
GT/T1-195R
1094 Pins for chemical welding
14 Gas insulation welding oil rust wire
Technical conditions for water treatment equipment
JB/T2932——1999
JB4708—2000
Qualification of the connection process between steel and pressure vessels
JB4726-20X00
JH 4730-1994
JH 4744—20KX0
3 Terms and definitions
Non-destructive testing of low alloy steel parts for pressure vessels
Mechanical properties of welded test plates of steel products The following terms and definitions apply to this standard. 3.1
Thermal deaerator
Return principle: The core is directly connected to the core and heated to the saturation temperature under working pressure by methods such as equalization and water spraying, or the water body is partially vaporized), and the dissolved oxygen (referring to other gases) is removed to provide water with the specified oxygen content: the equipment includes a deaerator and a water tank, hereinafter referred to as deaerator. 3.2
Pressure deaerator
Newly defined as a deaerator with a working pressure of not less than 1MPa. 1
JB/T103252002
Atmospheric deaerator
Deaerator with rated working pressure greater than 0.0Ma and less than 0.1MPa. 3.4
Deaerator head
A deaerator consisting of nozzle, water junction and other internal parts and outer shell. 3.5
A container provided by the outer shell for storing the deaerated water: the water tank can be a part of the deaerator head, or it can be a container connected to the deaerator head.
Effective water storage capacity
The water storage capacity of the water tank from the designed normal water level to the water outlet pipe of the water tank: that is, the calibrated capacity on the nameplate, rated output
Under the current conditions of the inlet water temperature and the six heating parameters, the amount of qualified oxygen detected at the outlet of the deaerator per unit time, the sum of the fixed water loss (including the drain weight) and the condensate flow of the heated steam, is not less than 105 of the maximum feed water consumption required for the boiler in large continuous steam operation. The output on the nameplate is the rated output. 3.8
Dissolved oxygen content in outlet water
The residual dissolved oxygen content in the outlet water of the deaerator. 4 Structure and appearance of deaerator
4.1 Horizontal deaerator
See Figure 1 for the inductive deaerator
Figure 1 Horizontal deaerator
4.2 Double-head vertical deaerator
Double-head vertical deaerator see Figure 2:
4.3 Vertical mist deaerator
Vertical spray deaerator see Figure 3.
4.4 Integrated deaerator
Integrated deaerator see Figure 4
Figure 2 Double-head vertical deaerator
Figure 3 Vertical deaerator
JB/T10325--2002bZxz.net
JB110325--2002
5 Main performance indicators
Figure 4 Integrated deaerator
5.1 The oxygen penetration index of the deaerator outlet water for dry power generation shall comply with the provisions of Table 1. Table 1 Power generation According to the oxygen intensity of the boiler outlet water, the oxygen content of the deaerator water is 2.5≤p5.8. According to the oxygen index of the oxygen supply water of the industrial boiler, the oxygen index of the deaerator water of the industrial boiler is in accordance with the heat of the boiler. Table 2 Industrial boiler deaerator outlet water dissolved oxygen index is preferably calibrated steam pressure MPa
deaerator outlet water dissolved oxygen mgL
6 Design requirements for deaerators
6.1 The design of the pressure deaerator shall comply with the provisions of the "Regulations on Safety Technical Supervision of Medical Containers", CB150 and the order contract or technical agreement: the following requirements shall be met:
6.1.1 The design pressure of the deaerator shall be determined according to the highest operating pressure in operation. The design pressure of the constant pressure deaerator shall not be lower than 1.3 times the rated working pressure. The design positive pressure of the sliding pressure deaerator should not be less than 1.5 times the reheat steam pressure used by the deaerator when the turbine is running at a large continuous output rate.25 degrees.
6.1.2 The design temperature of the deaerator shall not be lower than the larger of the following two temperatures: a) The return steam temperature used by the deaerator when the turbine is running at the maximum reverse output power. b) The auxiliary steam temperature used by the deaerator when starting or running at low load. The design temperature of this box shall not be lower than the saturation temperature of the medium under the high working pressure plate, and shall not be lower than 205℃.6.1.3 The rated output of the deaerator shall not be lower than 105% of the water required for the large continuous evaporation unit. When a low-pressure heater is stopped, the output of the deaerator shall not be lower than 90% of its rated output. When the deaerator is running at rated output, minimum output (30% rated output) and output between the above two levels, the amount of deoxygenated water in the deaerator is not large.
6.1.4 The water capacity of the water tank shall be determined according to the following requirements: a) For units with a single turbine capacity of 200MW and below, the water capacity of the water tank shall be determined according to the feed water deviscosity of the boiler at maximum continuous evaporation and 10i~[Srim when running;
For units with a single turbine capacity of 2(HMW or above: the water storage capacity of the water tank shall be determined according to the minimum feed water consumption of the boiler at maximum reverse evaporation (Smin~1Cmin); b) The total water storage capacity shall be 1.17 times to 1.25 times the water storage capacity of the deaerator. 6.1.5 The corrosion standard of the deaerator shall be selected according to the following requirements: JR/T10325—2002
3) The deaerator head shall be 2.5mm when carbon steel is used and 0 when stainless steel or copper-reduced composite steel plate is used. D) When the water tank shell is made of carbon pin, it shall be 1.Gmn6.2 The requirements of the gas-type precipitator shall refer to Chapters 4, 7, and 9 of GR150 and the provisions of the order contract or technical agreement: and shall meet the following requirements:
6.2.1 The product shall comply with the requirements of Chapter 5 of JB/T2932. G2.2 The thinning amount of the T process is in accordance with the provisions of Table 3. The thinning amount of the cylinder shell process in Table 3 is: = r || tt || 6.2.2.2 The thinning amount of the head punching process is in accordance with the provisions of Table 4. Table 4 The thinning amount of the head stamping process is || tt || Structure type || tt || Ellipsoid head || tt || Source spherical head || tt || Spherical color meaning || tt || Note: -|| tt || The thickness between the head and the bottom is not, the unit is mm.|| tt || More.2.5 The minimum test quantity for deoxygenation shall be selected according to the following provisions || tt || Unit: m || tt ||) The required thickness of the deoxygenation shell is 3.5mm: it shall be made of stainless steel or composite steel or step 0, and the required thickness of the water tank is 1.Gmum when the steel is used. 6.3. Each deaerator shall be equipped with at least two safety valves, which can be installed on the deaerator head and water tank respectively. 6.3.2 The safety valves on the deaerator shall be of a certain size and the selected safety valves shall be marked with the relevant technical specifications. 6.3.3 The safety valves of the deaerator shall not be too small to exceed the steam inlet of the deaerator. When the design pressure is lower than the fixed pressure operation with the maximum extraction pressure, the safety valve shall not exceed the rated steam inlet of the deaerator. When the design pressure is higher than the fixed pressure operation with the maximum steam pressure, the rated steam inlet of the deaerator shall not be suitable.
6.3.4 The safest discharge limit of a single dehydrogenator should be calculated according to one of the following methods: a) G=0.00525GoAr
G··Safety value modification, single volume coefficient, using safety valve system; please provide measured data, when measured data is provided: full start type becomes full sink limit center =06 safety net waiting area. The unit is mm, and can be calculated by d2: (d
safety adjustment throat diameter, in millimeters) safety room steam pressure, the unit is kPa, the safety room steam pressure is calculated according to the following formula: 5
JB/T10325-2002
P=t.10p+101.325
Where:
--safety adjustment pressure, the unit is kFa
b) Calculate according to the formula in GB[2241, 6.3.5 The nominal diameter of the pressure deaerator safety valve shall not be less than 150a7 material
7.1 Material requirements for deaerator:
.1.1 The requirements and specifications of deaerator materials shall comply with the standards of material inspection, and the production of deaerator materials shall be approved by the national safety inspection agency. The material production unit shall provide the user with a quality certificate (original) in accordance with the relevant standards, and shall show the material quality mark or other marks on the material, which must include the material standard code, material brand and specification, furnace batch number, national safety inspection agency approval mark, material production order name and inspection seal, etc. The content of the material quality certificate must be complete and clear, and it shall be stamped with the material production unit's quality inspection seal. When obtaining a deaerator manufacturing order, the production unit shall obtain the original certificate of the material supply unit or the valid issued copy of the inspection seal and the seal of the person in charge of the material supply unit. The deaerator manufacturing unit shall evaluate the authenticity and consistency of the deaerator materials and material quality certificates obtained. 7.1.2 The manufacturer shall conduct welding process assessment for new materials used for the first time. For substitution of materials for components to be replaced by the original ones, the design approval documents issued by the relevant original design unit should be verified in advance, and detailed records of the modified parts should be made on the work drawings. For the production order, the materials that can be substituted are limited to 16MmR, 20R, Q235 steel, 16M, 12, 20 stacking parts or general cabinets (for replacement). If the manufacturing unit has the corresponding design qualification, the design department of the manufacturing unit may approve the substitution and bear the corresponding responsibilities. At the same time, the original design unit shall be filed: if there are any differences in the original design, the manufacturing unit shall give feedback in time. 7.1.3 The deaerator shell plate should not be made of 16 and carbon steel. 7.1.4 The steel plates, backings, welding supports, burst wires, short agents and other pressure components of the deaerator shell should be inspected before entering the factory. There is no quality certificate. Quality assurance content. Uncompleted materials should be refused inspection. Material factory inspection should be based on "batch". The same batch of materials refers to materials made of the same grade (end) number, specification, car classification, and processing specifications (or sample heat treatment). The same batch of welding rods refers to the same number, specification, and brand. Article 7.1.5 The inspection method of deaerator pressure components shall comply with the provisions of the relevant standard group (see Table 5) Table 5 Deaerator pressure component material standard || tt || GB 6654
GB3087GR/T!63
G9.T99.T5113
In addition to the provisions of this standard, the materials used for deaerators shall also comply with the provisions of GB15 Section 4. 7.16
7.1.7 In addition to the steel, the materials used for pressure-bearing parts shall meet the following requirements: C9/T 14157GR/14958
The materials used shall comply with the national labor standards and have trial examples abroad. The use range shall comply with the relevant specifications and standards of the material production group. 2)
The material quality certificate shall be available. 5)
Before the first use, the manufacturing unit shall conduct a welding process assessment and welder examination, and re-test the chemical composition and mechanical properties. Only after meeting the use requirements can the materials be put into manufacturing. Technical requirements - The technical indicators of domestic corresponding materials shall not be exceeded. Domestic materials with the lower limit of tensile strength specified in the standard greater than 540MPa shall be approved according to the provisions of Article 1 of the Safety Technical Supervision Regulations for Pressure Vessels. 7.1.8 The steel plates used for the pressure components of the deaerator shall be inspected if any of the following conditions are met: a) The design drawings require inspection.
The user requires re-inspection
The unit cannot determine the material's reproducibility or has doubts about the performance and chemical composition of the material. c) The steel material certificate indicates that the re-inspection is not equivalent to 3B/T 10325-2002
7.1.9 The grade of forgings used in the deaerator shall be selected in accordance with the provisions of B4726 and shall be clearly stated in the sample or relevant technical documents. 7.2 The material composition of the atmospheric deaerator shall meet the requirements of Section 6 of Taiwan/T2032. B. Manufacturing and testing of deaerators
8.1 Hot and cold processing
8.1.1 Groove
The surface of the groove and its material should be within 20mm (calculated by the mass of the edge of the groove), and the oxide, melting, and other slipping standards should be strong. The surface should not be too rough, and there should be no defects such as sludge, long flow, etc. 8.1.2 Head
8.1.21 When the head is spliced ​​or connected, the welding depth should not exceed 2. When the head is spliced, the center distance of the head should be less than 0.25D.Ds4kkmn), and the center width of the connecting plate should be less than 200m (see method 5) (the diameter of a head, unit yuan!
8.1.22 When the internal plate and the top plate of the head are connected, the details are the same! The distance between the two sides should be equal to 3. (--thickness of the material, in mm), not less than 1Umm. The front diameter of the center top plate is 10.5D. When the weld passes through the center of the top thickness, see Figure 6: 5 Arched plate head
Figure 6 Head with the plate and the top plate spliced ​​
1.2.3 The main dimensions of the spherical shell or spherical head shall be in accordance with the provisions of Table 6 (see Figure). Table 6 Main dimensional deviations of spherical shells or spherical heads Unit: E, inner diameter deviation AD. Maximum and minimum diameter difference After welding, the overall dimension E of the butt joint is as follows: Surface measurement of the butt joint between the butt joints is as follows: Technical requirements JB/T10325—2002 Surrounding spherical shells or spherical heads B.1.4 The inner surface shape difference of the spherical shells and spherical heads shall not be greater than that of the butt joints. The maximum shape difference shall not be greater than that of the butt joints. There is no design inner lightness D. of .25, the center of the ear is not alternating in the difference position, and the chord length is not less than the inner diameter of the head. Therefore, the internal sample is measured directly on the inner surface of the head, and the measurement position is allowed to avoid the weld position (see Figure 8) 4
National B sugar round head inner surface shape deviation measurement 8.1.2.5 The shape is determined according to the main size difference (see Figure 9) 2, +.5
Figure 9 The main size deviation of the horizontal round head
8.1.2.6 The depth of the longitudinal wrinkle on the straight edge of the head shall not be greater than 1.5mmB.1.3 The number of longitudinal welded joints on the deaerator shell shall comply with the provisions of Table 8, and the length between the center lines of the two longitudinal welded joints shall not be
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