GB/T 14650-1993 General technical requirements for marine auxiliary boilers
Some standard content:
UDC 621. 18
National Standard of the People's Republic of China
GB/T 14650-93
General specification for marine auxiliary boiler
Promulgated on October 16, 1993
National Technical Supervision Bureau
Implementation on July 1, 1994
W.National Standard of the People's Republic of China
General specification for marine auxiliary boiler
General specification for marine auxiliary boiler
1 Subject content and scope of application
GB/T 14650-93
This standard specifies the general technical conditions for the design, manufacture, testing and acceptance of marine auxiliary boilers. This standard is applicable to marine fuel oil auxiliary boilers, exhaust gas boilers and fuel oil and gas combined boilers (hereinafter referred to as boilers) with a design pressure not exceeding 2.5 MPa and a medium temperature of saturated steam. 2 Reference Standards GB1576 Low-pressure boiler water quality standard GB11037 Pressure test method for marine auxiliary boilers and pressure vessels Technical conditions for welding of pressure components of marine auxiliary boilers GB 11038 Centrifugal blowers for marine boilers GB 11878 GB/T13114 Technical requirements for marine exhaust gas boilers GB/T14619 Specification for mechanical performance test of marine auxiliary boilers CB1050 Technical conditions for rotary cup burners Ch*31tl CE*3161 CB:3347 CB*3348 Safety valves for marine auxiliary boilers Technical conditions for auxiliary steel furnace control Technical conditions for paint, insulation and packaging of marine auxiliary boilers Technical conditions for wooden body assembly of marine shell type auxiliary boilers CB 3463
Compilation method of protective plastic number for marine auxiliary boilers
Manhole device for marine auxiliary boilers
ZB t41 002
Technical conditions for manufacturing pressure components of marine auxiliary boilers ZB 1 003
ZBU41D04 Manhole cover for marine auxiliary boilers
ZBU41005 Factory inspection of raw materials for marine auxiliary boilers JB1153 Nominal diameter of pressure vessels
3 Technical requirements
3.1 Basic requirements
3.1.1 In addition to complying with this standard, the design, manufacture, testing and acceptance of boilers shall also comply with the design drawings approved in accordance with the prescribed procedures. 3.1.2 The working pressure and evaporation capacity of the boiler are generally based on the following values: working pressure
evaporation capacity
3;5,0.7;1.0: 1.3:1.6+2.00.1r0.2+0.30.40.5:0.9+11512.0+2.53.0t05.0.C;101316+20,2530,40:50
National Technical Supervision Department approved on October 16, 1993 and implemented on July 1, 1994
W.bzsoso:comGB/T 14650-93
3.1.3 The thermal efficiency of the auxiliary boiler should reach the following indicators: a. When the evaporation capacity D21t/h -280%;
. When the evaporation capacity D≤1 t,h,%.
For oil-fired and exhaust-gas combined boilers, the thermal efficiency of the oil-fired part can be slightly reduced. 3.1.4 The boiler unit shall be able to operate normally under the following conditions: 1. Heel 15% horizontal tilt 22.5″
b. Trim 5° longitudinal tilt 7.5°.
31.5 The boiler shall have 110% overload operation capacity. 31-6 The water quality requirements shall comply with the requirements of GB1576. 3.1.7 The steam condensation of the boiler shall generally meet the following indicators: # For water tube boilers, not more than 3 levels;
b. For steel tube boilers; not less than 5%.
3.1.8 The method of compiling the model shall comply with the requirements of CB 3463. 3.1.9 If there is a requirement for left and right type of boiler, the left side of the main operating parts facing the operating surface shall be called the left type; otherwise it is called the right type. 3.2 Design requirements
3.2.1 Basic requirements www.bzxz.net
3.2.1.1 The design pressure of the boiler is generally 1.1 times the working pressure. 3-2.1.2 The materials used for the boiler body should meet their respective standards. 3-2.1.3 The strength design of the steel body should meet the current ship specifications. 3.2.1.4 In addition to meeting the current ship specifications of this standard, the structural design should also meet the relevant requirements of ZR J3.1 003, CB 11038, and CB3348.
3.2.1.5 Boiler]: At least two safety valves should be installed. For auxiliary boilers (hereinafter referred to as small auxiliary boilers) with a design pressure not exceeding 0.78 MPa and an evaporation not exceeding 1 t/, one safety valve can be installed. 3.2. 1.6 Each boiler should be equipped with two glass water level gauges; small water tube boilers may only be equipped with one glass water level gauge and one set (not less than two) of permanent level switches:
3.2.1.7 The lowest water level of the boiler should generally comply with the following provisions: a: The lowest water level of a water tube boiler should be 100mm higher than the highest heating surface, and the downcomer of the steam cylinder should be the heating surface; b
When reduced:
The lowest water level of a horizontal smoke tube auxiliary boiler should be 75mm higher than the combustion chamber or the top of the smoke tube, and for multi-tube boilers, the lowest water level should be 100mm higher than the highest heating surface, and the downcomer of the steam cylinder should be the heating surface; b
When reduced:
The lowest water level of a horizontal smoke tube auxiliary boiler should be 75mm higher than the top of the combustion chamber or the smoke tube, and for multi-tube boilers, the lowest water level should be 100mm higher than the highest heating surface, and the downcomer of the steam cylinder should be the heating surface; The minimum water level of the boiler should be 50mm higher than the hot water arm. The minimum water level of the vertical smoke tube boiler in the test room should not be lower than half of the smoke tube height: e, and the maximum water level should still meet the above requirements. 3.2.1.8 The nominal size of the inner diameter of the flange, head and arm plate should generally be selected according to the size in JB1153. 3.2-1.9 The necessary manhole and hand milk device should be set on the boiler body. The manhole device should comply with ZBU41 002 requirements and hole installation should meet the requirements of 2BU4100.
3.2.1.10 The connecting pipes connecting the steam part on the main body should not have depressions or elbows where hot steam condensation can accumulate. 3.2.1.11 The external pipes on the main body should be flanged or hollow plate: threaded seats can be used when the diameter is less than 20mm. The pipes shall not pass through the smoke box. If the smoke box must pass through the smoke box, the connecting pipes shall pass through the casing. The control of the country should not be less than 50mm. 3.2.1.12 The layout of the internal water supply pipe should ensure that the water supply does not directly flush the inner wall surface of the boiler components. 3.2.1.13 If the exhaust boiler is equipped with a blowdown valve, the upper blowdown funnel in the boiler should be installed within the range of 25mm above the lowest water level to 25mm below the normal water level. The number of full funnels and the installation position should be able to remove all the dirt on the evaporator. 3.2.1.14 The insulation of the outer surface of the boiler body shall be carried out in accordance with CB*3347. The outer wall temperature during continuous operation shall generally not exceed 60℃. 3.2.1.15 The design of the furnace bottom should be able to adapt to the thermal expansion of the drum and the header. 2
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3. 2. 1. 16 The boiler body 1: should be equipped with earrings suitable for lifting and fixing. 3.2.2 Valves
3.2.2.1 Connections The steam valve, water supply valve, drain valve, boiler water sampling cabinet, air valve, pressure gauge and water level indicator of the boiler body 1: should comply with the requirements of various standards and ship regulations. The safety valve should comply with the requirements of CB3111. 3.2.2.2 The valve parts of the boiler body 1: should be directly connected to the pipe or flange of the body. However, if the installation of the lower drain valve is indeed difficult, a thicker short pipe can be used for connection.
3.2.2.3 The liquid level indicator shall be connected to the boiler body L through a valve or a screw. 3.2.3 Water supply system
3.2.3.1 The water supply system of the boiler shall include a water supply pump, a water filter, a safety valve, a pressure gauge, a water supply stop valve, a water supply check valve and pipe system accessories.
3.2.3.2 For auxiliary boilers with important uses, at least two independent power water supply pumps shall be installed. When any water supply pump fails and stops working, the displacement of the remaining water supply pumps shall be sufficient to replenish the boiler water under full load conditions. For small auxiliary steel furnaces, only one water supply pump may be installed. 3.2.3.3 Auxiliary boilers for important purposes should be equipped with two independent water pipe systems. When one set of pipes stops working, the other set of pipes should be able to ensure the normal operation of the boiler. Small auxiliary boilers may only be equipped with one set of pipes. 3.2.4 Air supply system 3.2.4.1 The air supply system should include air blowers, air pressure detectors and air volume control mechanisms. 3.2.4.2 The air blowers should comply with the provisions of GB11878. 3.2.5. Fuel system
3.2.5.1 The fuel system shall include pumps, pipes, filters, pressure gauges, safety valves, solenoid valves, quick-closing valves and pipe accessories. 3.2.5.2 The fuel pump shall be self-priming. The pump shall be able to supply the required amount of fuel under various conditions. Its operating characteristics shall be adapted to the burner equipped.
3.2.5.3 When the fuel is heavy oil and a secondary heater is installed in the residual pipeline, a safety valve shall be installed. The safety valve shall be led to a safe place:
3.2.5.4 When electric heaters are used for secondary heating, measures shall be taken to ensure that all heating devices are always immersed in the liquid when current passes through, and the temperature of the device surface shall not exceed 220℃. 3.2.5.5 The oil filter shall be double-joint or single-joint self-cleaning so that the oil flow is not interrupted during cleaning. 3.2.6 Burner
3.2.6.1 The boiler can be equipped with a "mechanical repulsion atomization type", "rotary cup atomization type" or steam (air) atomization burner. 3.2.6.2 When the burner burns the specified brand of fuel oil, its smoke exhaust shall comply with the relevant regulations of GB/T14845. 3.2.6.3 If a rotary cup burner is used, it shall comply with the requirements of CB1055. 3.2.7 Control system
3.2.7.1 The automatic control system of the boiler protection unit shall consist of various sensors, automatic control boxes and various actuators, and can reliably 1.,
3.2.7.2 The water protection Position control, combustion control, pressure control and various safety protections shall comply with the requirements of ship regulations. 3.2.7.3 The automatic digging box used for the boiler unit shall comply with the requirements of (B3161. 3.2-8 Exhaust gas part
The exhaust gas part design of the gas boiler and the oil-fired gas combined boiler shall comply with the requirements of (B/T13411. 3.3 Manufacturing requirements
3.3.1 All factories producing marine boilers shall be approved by the ship inspection agency, 3.3.2 The materials used in the steel furnace shall comply with the requirements of the design drawings and have the quality certificate of the manufacturer. 3.3.3 The pressure-bearing components of the boiler shall be manufactured according to ZB 3.3.4 The welding and heat treatment of boiler pressure components shall be carried out in accordance with the requirements of GB/T 14650-93. 3.3.5 The installation of manholes in the boiler shall comply with the requirements of ZBU41002. 3.3.6 The installation of hand guard holes in the boiler shall comply with the requirements of ZBU41003. 3.3.7 The steel furnace body assembly shall be carried out in accordance with the requirements of (B*3348. 3.3.8 The refractory materials installed shall be dense, solid and have a smooth surface. 3.3.9 The paint, insulation and packaging of the boiler shall meet the requirements of CB3347. 4 Testing and acceptance
4.1 The materials used for the boiler shall be inspected by the factory in accordance with the requirements of ZBU11005. 4.2 The manufacturing of the weak furnace pressure components shall be inspected in accordance with the requirements of ZBU41G03. 4.3 The welding and heat treatment of the boiler pressure components shall be inspected in accordance with the requirements of GB11038. 4.4 The steel furnace body assembly shall be inspected in accordance with the requirements of CB3348. 4.5 The hydraulic test of the boiler shall be inspected in reverse according to the requirements of GB71037. 4.6 The main supporting parts of the boiler shall have their own product certificates and ship inspection certificates. 4.7 After the boiler unit is assembled, it shall be inspected in accordance with GB/T1464 9. The performance test shall be conducted in accordance with the requirements of the 4.8 certificate of each boiler shall include the following contents: material evaluation of main materials and welding materials; a. coal seam quality report: heat treatment report! rolling test report. 5. Marking, packaging, storage and warranty period 5.1 Each boiler shall be equipped with a fixed gold plate in a conspicuous place in front of the furnace. The nameplate shall include at least the following contents: model, name; design pressure, MPa; operating pressure, MPa; rated evaporation capacity t/h (heating capacity for exhaust gas boilers, m\), liquid test pressure, MPa; factory product number; manufacturing year and month; stamp and number of the inspection agency; manufacturer name; weight, kg.
5.2 When each steel furnace leaves the factory, the drawings and technical documents supplied with it shall at least include the following contents: a.
1 copy of the general drawing of the boiler unit +
1 copy of the structural drawing of the boiler body:
1 copy of the general drawing of the combustion dryer:
1 copy of the water supply system diagram;
1 copy of the fuel oil system diagram;
1 copy of the electrical schematic diagram,
1 copy of the external wiring diagram of the control box;
1 copy of the operating manual of the boiler unit and the combustion and control manual: 1 copy of the boiler spare parts and special tool list;
W.GB/T 14650-93
j.1 copy of the product certificate and ship inspection certificate: k.1 copy of the loading list.
5.3 The quantity of various spare parts of the boiler shall comply with the requirements of relevant standards and ship regulations. 5.4 The valve parts of the steel expansion joint shall have a metal nameplate with the name and the direction of opening, and the detection instrument shall have a set value mark. 5.5 The painting, packaging and storage of the boiler shall comply with the requirements of CB3347. 5.6 The name, the name and location of the receiving unit and the transport unit shall be marked on the packaging box according to the shipping requirements. 5.7 The quality assurance period of the boiler shall be 18 months from the date of submission by the boiler manufacturer or 12 months from the date of formal operation. Additional remarks:
This standard was issued by China Ship Survey Industry Corporation. This standard was approved by the Auxiliary Boiler Anti-pollution Sub-Technical Committee of the National Technical Committee for Standardization of Marine Machinery. This standard was issued by Qingdao Marine Boiler Factory, and the 701 Institute and 603 Institute of the Seventh Research Institute of China Shipbuilding Industry Corporation and Shazhou Marine Boiler Factory were responsible for the drafting.
The main contributors of this standard are Zhang Qing, Jia Wende, Jiang Chengmao, Zhong Chongxin and Liu Guoliang. W.5 The hydraulic test of the boiler shall be retrospectively accepted according to the requirements of GB71037. 4.6 The main accessories of the boiler shall have their own product certificates and ship inspection certificates. 4.7 After the boiler unit is assembled, the performance test shall be carried out in accordance with the requirements of GB/T14649. 4.8 The certificate of each boiler shall include the following contents: Material evaluation of main materials and welding materials; a.
Coal seam quality report:
Heat treatment report!
Rolling test report.
5 Marking, packaging, storage and warranty period
5.1 Each boiler should be equipped with a fixed gold plate in a conspicuous place in front of the furnace. The nameplate should at least include the following information: model, name;
design pressure, MPa;
operating pressure, MPa
rated evaporation capacity t/h (for exhaust gas boilers, it should be the heated area, m\), liquid test pressure, MPa;
factory product number;
manufacture date:
mark and number of the inspection agency;
name of manufacturer;
weight, kg.
5.2 When each steel furnace leaves the factory, the drawings and technical documents supplied with it shall at least include the following contents: a.
1 copy of the general drawing of the boiler unit +
1 copy of the structural drawing of the boiler body:
1 copy of the general drawing of the combustion dryer:
1 copy of the water supply system diagram;
1 copy of the fuel oil system diagram;
1 copy of the electrical schematic diagram,
1 copy of the external wiring diagram of the control box;
1 copy of the operating manual of the boiler unit and the combustion and control manual: 1 copy of the boiler spare parts and special tool list;
W.GB/T 14650-93
j.1 copy of the product certificate and ship inspection certificate: k.1 copy of the loading list.
5.3 The quantity of various spare parts of the boiler shall comply with the requirements of relevant standards and ship regulations. 5.4 The valve parts of the steel expansion joint shall have a metal nameplate with the name and the direction of opening, and the detection instrument shall have a set value mark. 5.5 The painting, packaging and storage of the boiler shall comply with the requirements of CB3347. 5.6 The name, the name and location of the receiving unit and the transport unit shall be marked on the packaging box according to the shipping requirements. 5.7 The quality assurance period of the boiler shall be 18 months from the date of submission by the boiler manufacturer or 12 months from the date of formal operation. Additional remarks:
This standard was issued by China Shipbuilding Industry Corporation. This standard was approved by the Auxiliary Boiler Anti-pollution Technical Committee of the National Technical Committee for Standardization of Marine Machinery. This standard was issued by Qingdao Marine Boiler Factory, and the 701 Institute and 603 Institute of the Seventh Research Institute of China Shipbuilding Industry Corporation and Shazhou Marine Boiler Factory were responsible for the drafting.
The main contributors of this standard are Zhang Qing, Jia Wende, Jiang Chengmao, Zhong Chongxin and Liu Guoliang. W.5 The hydraulic test of the boiler shall be retrospectively accepted according to the requirements of GB71037. 4.6 The main accessories of the boiler shall have their own product certificates and ship inspection certificates. 4.7 After the boiler unit is assembled, the performance test shall be carried out in accordance with the requirements of GB/T14649. 4.8 The certificate of each boiler shall include the following contents: Material evaluation of main materials and welding materials; a.
Coal seam quality report:
Heat treatment report!
Rolling test report.
5 Marking, packaging, storage and warranty period
5.1 Each boiler should be equipped with a fixed gold plate in a conspicuous place in front of the furnace. The nameplate should at least include the following information: model, name;
design pressure, MPa;
operating pressure, MPa
rated evaporation capacity t/h (for exhaust gas boilers, it should be the heated area, m\), liquid test pressure, MPa;
factory product number;
manufacture date:
mark and number of the inspection agency;
name of manufacturer;
weight, kg.
5.2 When each steel furnace leaves the factory, the drawings and technical documents supplied with it shall at least include the following contents: a.
1 copy of the general drawing of the boiler unit +
1 copy of the structural drawing of the boiler body:
1 copy of the general drawing of the combustion dryer:
1 copy of the water supply system diagram;
1 copy of the fuel oil system diagram;
1 copy of the electrical schematic diagram,
1 copy of the external wiring diagram of the control box;
1 copy of the operating manual of the boiler unit and the combustion and control manual: 1 copy of the boiler spare parts and special tool list;
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j.1 copy of the product certificate and ship inspection certificate: k.1 copy of the loading list.
5.3 The quantity of various spare parts of the boiler shall comply with the requirements of relevant standards and ship regulations. 5.4 The valve parts of the steel expansion joint shall have a metal nameplate with the name and the direction of opening, and the detection instrument shall have a set value mark. 5.5 The painting, packaging and storage of the boiler shall comply with the requirements of CB3347. 5.6 The name, the name and location of the receiving unit and the transport unit shall be marked on the packaging box according to the shipping requirements. 5.7 The quality assurance period of the boiler shall be 18 months from the date of submission by the boiler manufacturer or 12 months from the date of formal operation. Additional remarks:
This standard was issued by China Shipbuilding Industry Corporation. This standard was approved by the Auxiliary Boiler Anti-pollution Technical Committee of the National Technical Committee for Standardization of Marine Machinery. This standard was issued by Qingdao Marine Boiler Factory, and the 701 Institute and 603 Institute of the Seventh Research Institute of China Shipbuilding Industry Corporation and Shazhou Marine Boiler Factory were responsible for the drafting.
The main contributors of this standard are Zhang Qing, Jia Wende, Jiang Chengmao, Zhong Chongxin and Liu Guoliang. W.
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