This standard specifies the technical requirements for the structural performance, materials, manufacturing, hydraulic test and paint packaging of marine exhaust gas boilers. This standard applies to boilers with a design pressure not exceeding 2.5MPa and a medium temperature not exceeding 350℃. GB/T 13414-1992 Technical Requirements for Marine Exhaust Gas Boilers GB/T13414-1992 Standard download decompression password: www.bzxz.net

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National Standard of the People's Republic of China
GB/T 13414—92
Technical requirements for marine exhaust gas boilers
Marine exhaust gas boiler specification1992-03-30 Issued
State Administration of Technical Supervision
1993-01-01 Implementation
W. National Standard of the People's Republic of China
Technical requirements for marine exhaust gas boilers
Marine exhaust gas boiler specification1 Subject content and scope of application
GB/T13414-92
This standard specifies the technical requirements for the structure, performance, materials, manufacturing, liquid tension test and paint packaging of marine exhaust gas boilers (hereinafter referred to as boilers).
This standard is applicable to the degassing with a design pressure not exceeding 2.5 MPa and a medium source temperature not exceeding 330℃. 2 Reference standards
CB1576 Boiler water quality standard
GF3323 Steel tower chemical joint radiographic index and quality classification GB11037 Marine auxiliary boiler and pressure vessel hydraulic test method GB11038 Marine auxiliary boiler pressure element welding technical conditions CB'3114 Exhaust pipe steel flange
CB3161 Marine auxiliary steel furnace control box technical conditions Marine auxiliary boiler painting, insulation, packaging technical conditions CH3347
Marine shell type auxiliary boiler body assembly technical conditions CB3348
Exhaust pipe flange
CBM 1021
JB3965 Steel Leli penetrator powder flaw detection
ZBU41003 Marine auxiliary boiler pressure element manufacturing technical conditions ZB U41 005 Raw materials for marine auxiliary boilers 3 General requirements
The boiler shall be designed, manufactured, tested and accepted in accordance with the provisions of China National Standards for the Classification and Construction of Steel Cruise Ships (hereinafter referred to as "ZC Standards") and this standard.
4 Structural performance requirements
4.1 The boiler shall have a device to adjust the amount of steam. The steam volume can be adjusted by bypassing the flue gas or by discharging excess steam. Boilers with steam-water separation space and independent steam-water separators shall be equipped with a water level control system, and when there is an electrical control box, it shall meet the relevant provisions of CB'3161.
4.2 The boiler design shall take into account the prevention of low-temperature corrosion of the pipes. 4.3 For the heat exchange tube group of the forced circulation steel furnace, when its length is greater than 1.8 tm1, the intermediate support device of the hood should be considered. 4.4 The side of the heat exchange tube should generally have a straight section of not less than 50mm, and a small radius elbow with a bending radius less than 2 times the diameter of the tube. It is allowed to have no straight section.
4.5 If the boiler is equipped with a fixed extension soot blower, the arrangement of the soot blower should enable the steam (gas) flow to cover the heat transfer surface to the maximum extent. Guohao According to the Technical Supervision Bureau approved on March 30, 1992 and implemented on January 1, 1993
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4.6 The base should meet the requirements of the thermal expansion of the boiler, and the bolt holes of the base should consider the thermal expansion in both the vertical and horizontal directions. 4.7 The box should be sealed to prevent smoke from overflowing. 4.8 The outer side of the boiler should be provided with an insulation layer, and the temperature should generally not exceed 60Y4.9 The short end smoke box of the boiler should be provided with inspection doors for inspection and submerged cleaning. The size of the inspection door should not be less than the size of the manhole. When the upper smoke box cannot be equipped with an inspection door, a detachable short pipe can be installed at the exhaust smoke outlet of the furnace for inspection and cleaning. 4.10 The boiler should generally be equipped with flue gas inlet and outlet methods according to CB°3114 and CBM 10214.11 The lowest point of the lower smoke box of the boiler should be replaced with a drain valve with a diameter not less than 201um1. The lower smoke box of the boiler equipped with water washing or fire fighting equipment should have a drainage port with a patrol diameter large enough to meet the needs of natural drainage during water washing. The structure at the smoke inlet should be able to effectively prevent water from entering the main engine exhaust pipe:
4.12 The water quality standard of the boiler expansion should comply with the provisions of GB1576. 4.13 The boiler should be matched with the corresponding main engine and the performance test content shall be agreed upon by the supply and demand parties. 5 Material requirements
5. 1 The raw materials for manufacturing the main parts such as boiler shell, tube sheet, head, header, etc. must be inspected and accepted according to ZB V41 005 after they are imported. 5.2 The welding materials shall comply with the relevant provisions of GB11538. 6 Manufacturing requirements
6.1 The manufacturing of steel shall meet the relevant provisions of ZFU11003 and CB*3348 revised standards. 6.2 When the length of the header is less than 5m, the number of joint seams shall not exceed -; when the length of the header is greater than 51H, not more than 10m, the number of joint seams shall not exceed two, and the shortest length of the splicing shall not be less than 00)mm, and the opening position shall be avoided. 6.3 The center spacing deviation of the header holes is +0.5mmn, and the center spacing difference of the tube holes at both ends is +2.0mm (Figure 1)F+5
6. 4 The total deviation of the header length shall not exceed 8mm. 6.5 The straightness deviation of the header shall not exceed one-fifth of the total length and shall not exceed 3 mm. 6.6 The height of the header pipe joint shall generally not be less than 50 mm. 6.7 The deviation between the center line of the header and the center line of the pipe hole shall not exceed 1 mm. 6.6 The inclination of the header pipe joint shall not exceed 1. tmm, and the inclination error of the pipe end of the connecting pipe shall not exceed 0. 5 lm (Figure 2). 2
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6.9 The end pitch deviation of any two adjacent pipe joints in a row shall not exceed ± 2.0 mm, and the end pitch deviation of the end pipe joint is m (Figure). bzxz.net
6.10 The height deviation Ah of the two pipe joints in a row is ±1.0mm, and the relative deviation is 1.0mm. The other pipe joints are based on the two pipe joints, and the difference A is ±0.5mm (Figure 4). Feyy
W.bzsoso：comGB/T 13414-92
+ 6.11 The inclination A of the flange plane on the coupling is 2.0 mm, and the flange height deviation Ah is ±2.0 mm (Figure 5). Figure 3
6.12 When the coupling is connected, the outer edge deviation shall not be greater than 10% of the wall thickness plus 0.5 mm, and shall not be greater than 4 mm. The inner edge deviation shall not be greater than 10% of the wall thickness plus 0.5 mm, and shall not be greater than 1 mm. When the edge deviation exceeds the above standard, it shall be thinned, and the thinning length shall not be less than times the thickness of the thinning.
6.13 Boiler heat exchange tubes shall not be spliced ​​when the straight section length is less than 2 m. One splicing weld is allowed between 2~5 m; two splicing welds are allowed between 5~10 m. One port joint is allowed for every 1 m of serpentine tubes, excluding elbow joints and header pipe joints. 6.14 The edge difference of spliced ​​tubes with the same nominal outer diameter shall be less than 0.8 mm1. 6.15 When splicing tubes with the same nominal outer diameter and a wall thickness difference of more than 1 mm, the thicker tube shall be thinned, and the thinning length shall not be less than 4 times the thinning thickness.
6.16 The end deflection of the pipe weld shall be less than 0.5 mm6.17 The deformation Al caused by pipe welding shall not exceed 2.0 mm per meter and the total length shall not exceed 4 mm. The measurement position shall be 50 mm away from the center of the weld (6).
6.18 The deviation of the joint made of needle tube and snake tube (Figure 7) shall meet the following requirements: a. The displacement of elbow along the length direction of the pipe shall not exceed ±3 mm. The relative displacement of two adjacent elbows along the length direction of the pipe shall not exceed 5 mm. The center deviation of adjacent pipe fittings shall not exceed ±2.5 mm. W.GB/r134.14-92
6.19 For elbows with small variable radius, the wall thickness reduction rate at the bend shall not exceed 20%. ×100%
Reduced wall thickness reduction rate, is;
Sin elbow cross-plane saddle wall thickness, mm; actual wall thickness of elbow pipe,
6.20 The center distance between the two parallel end faces of the elbow is ±2.5 mm (Figure 8). ±A?
6.21 The connection of pressure parts shall comply with the provisions of GB11038. 6.22 The welding of needles, pins and pipes shall be carried out on special welding equipment. 6.23 The splicing of pipes and the connection between the pipe and the pipe shall be done by argon arc welding. 6.24 The welds of pressure parts shall be inspected in accordance with the provisions of GB11038. The welds of headers with an outer diameter greater than 170 mm shall be 100% radiographically inspected.The butt welds of the manifold rings and pipes with an outer diameter less than or equal to 170 mm shall be subjected to radiographic inspection, with the number of inspections being 10% of the total number of ring seams. The radiographic inspection shall be conducted in accordance with GB3323, and shall be qualified if it is not less than Grade I.
The fillet welds of the manifold pipe joints shall be subjected to magnetic particle or colorimetric inspection, with the number of inspections being 10% of the total number of fillet welds: the qualified standard for powder inspection shall be in accordance with the relevant provisions of JB 3965, and no cracks or delamination shall be allowed in the sudden penetration inspection. 6.25 The manufactured elbows shall be subjected to 10% ball-through test, and the true ball diameter shall be 0.7 times the nominal inner diameter of the elbow. 6.26 The length, width and height differences of the cloud body of the forced circulation gas furnace after assembly shall all be ±15 mm. W.7 Hydraulic test
GB/T 13414—92
7.1 Hydraulic test of boiler pressure components, valves and valves after assembly shall be carried out in accordance with the provisions of GB11037. 8 Paint packaging
8-1 Paint packaging for boilers shall be carried out in accordance with CB3347. Additional notes:
This standard is proposed by China State Shipbuilding Corporation and is under the jurisdiction of the National Technical Committee for Standardization of Marine Machinery Auxiliary Boilers and Anti-pollution Technical Committee. This standard was drafted by Qingbo Marine Boiler Factory and Dalian Shipbuilding Factory. The main drafters of this standard are Zhang Qing, Yi Guoyuan and Jia Wende. W.bzsosocom
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