This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, transportation, packaging and storage of pneumatic quick-closing valve remote control devices for fuel oil, lubricating oil tanks and cabinets on ships. This standard applies to the remote control devices of GB 5744 marine pneumatic quick-closing valves for fuel oil, lubricating oil tanks and cabinets on ships, and also applies to the remote control devices of other similar valves. CB/T 3658-1995 Remote Control Devices for Pneumatic Quick-closing Valves for Oil Tanks and Cabinets CB/T3658-1995 Standard download decompression password: www.bzxz.net

Ship Industry Standard of the People's Republic of China
CB/T3658-1995
Remote Control Device of Pneumatic Quick Closing Valve for Oil Tank
Published on 1995-06-19
Published by China State Shipbuilding Corporation
Implemented on 1996-04-01
Ship Industry Standard of the People's Republic of China
Remote Control Device of Pneumatic Quick Closing Valve for Oil Tank
1 Subject Content and Scope of Application
CB/T36581995
Classification Number: U55
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of remote control devices for pneumatic quick closing valves for fuel oil, lubricating oil tanks and tanks (hereinafter referred to as devices). This standard applies to remote control devices for GB5744 marine pneumatic quick closing valves for fuel oil, lubricating oil tanks and tanks, and also applies to remote control devices for other similar valves.
Referenced standards
GB5744—93
Marine quick-closing valve
GB332387
CB'821—84
CB*49387
Radiography and quality classification of steel fusion welded butt jointsLow-pressure pipe threaded joints
Low-pressure air cylinder
《Rules for Classification and Construction of Seagoing Steel Ships》
1989
3 Product classification
3.1 The types of devices are specified as follows:
China Classification Society
U-type-an integral device with air cylinders and control valves and other components placed in a control box; S-type
A separate device with control valves and pressure gauges placed in the control box and air cylinders and other components placed outside the control box. 3.2 The structure and basic dimensions of U-type and S-type are as shown in Figure 1. Approved by China State Shipbuilding Corporation on June 19, 1995 and implemented on April 1, 1996
CB/T3658-1995
Engine room control air paint
Pneumatic quick closing valve
Engine room control air source
Pneumatic quick closing network
1—pressure gauge: 2—operation box; 3—safety valve; 4—air bottle; 5—hand hole; 6—stop check valve; 7—inflating pipe 8—air support at the outlet of the control box 9-control box outlet air main pipe; 10-stop valve: 11-control valve; 12-pressure gauge plug valve; 13-nameplate
3.3 The types of devices are specified as follows:
U1 type or S1 type-integral device or separate device with 1 outlet air pipe: U2 type or S2 type-integral device or separate device with 2 outlet air pipes; U3 type or S3 type-integral device or separate device with 3 outlet air pipes. The basic structure of U1, S1, U2, S2, U3, S3 type is as shown in Figure 2. U
CB/T36581995
1-pressure gauge; 2-operation box; 3-safety valve; 4-air bottle; 5-hand hole; 6-check and return chamber; 7-filling pipe; 9-air main pipe at the outlet of the operation box; 10-check valve; 11-operation valve; 12-pressure gauge plug valve 3.4 The series parameters and dimensions of air bottles are as shown in Figure 3 and Table 1. Safety guard
Outlet pipe joint
Hazardous discharge cut-off cabinet
Medical pressure gauge and its plug
Inlet cut-off check valve
Air pressure
Capacity of air bottle Q
Design pressure PN
Working pressure P
Nominal diameter DN
Overall dimensions of air bottle
Weight of air bottle, kg
Outer diameter d
Height h
CB/T3658-1995
Overall dimensions of 3.5U-type integral device are as shown in Figure 4 and Table 2. Note the nameplate
Gas cylinder capacity Q
3.6 The overall dimensions of the S-type separate device are as shown in Figure 5 and Table 3.4
Weight, kg
Overall dimensions
Weight, kg
3.7 Product marking
3.7.1 Model indication
3.7.2 Marking example
Note the network brand
CB/T36581995
Air cylinder capacity
Factory integrated type: U1, U2, U3||t t||Type-
Separate type: S1, S2, S3
Remote control device
Marine pneumatic quick closing valve
Integral marine pneumatic quick closing valve remote control device with air bottle capacity of 50L, type U2, 2 outlet air pipes: Marine pneumatic quick closing valve remote control device
CRD-U2-50CB/T3658-1995
4 Technical requirements
4.1 The device shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.2 The main materials of the device components shall be in accordance with Table 4. S3
Parts name
Air bottle
Control box
Device piping
Killed steel
CB/T3658-1995
Ordinary carbon steel
Seamless steel pipe
Standard number
GB712—88
GB700--88
GB5312-85
4.3 The connecting parts and fastening screws and nuts of the device shall be prevented from loosening due to vibration. The device shall ensure easy operation and monitoring.
4.4 The threaded joints of the interface between the device and the external piping system shall comply with the provisions of CB'821. 4.5 Air cylinders shall meet the following requirements:
The design, manufacture, inspection and acceptance of air cylinders shall be carried out in accordance with the requirements of the "Rules for Classification and Construction of Sea-going Steel Ships" for pressure vessels a.
;
The rust removal, anti-corrosion agent coating and nameplate of the inner and outer surfaces of the air cylinders shall be in accordance with the relevant provisions of CB'493; b.
Air cylinders shall be equipped with a full set of marine control valves and testing instruments when leaving the factory. 4.6 The control box shall meet the following requirements:
The control box shall be equipped with an air bottle outlet control valve, an air bottle pressure gauge and a pressure gauge plug valve; the control box frame shall be embedded, and the front part shall be made of angle steel into a rectangular shape. The flange edge shall be fixed to the cabin bulkhead and equipped with a steel door and door lock that is opened by hinges;
The welds of the control box shall not have sharp angles, and the slag and spatter on the welds must be removed; c.
d. A "Caution nameplate" and a glass plate shall be placed in a conspicuous position on the door of the control box, and a small hammer shall be provided for breaking the glass in an emergency. glass, open the control valve; the "Note nameplate" is made of brass plate, engraved with the instructions for the use of the control box, the content is as follows: In an emergency, use a small hammer to break the glass, turn the control valve from the normal position to the emergency position, and you can close the quick-closing valve of the fuel (lubricating) oil tank and cabinet; maintain the air pressure in the air bottle, when it is lower than 0.5MPa, you need to turn the gas bottle to inflate, and the stop check valve is inflated to 0.7MPa working pressure:
Illustration of the switch position of the handwheel (handle) of the air outlet control valve; it is not allowed to open the control box door without reason at ordinary times;
It should be checked regularly.
4.7 The piping system of the device shall meet the following requirements:
a. The nominal diameter of the air main pipe shall not be less than 15mm, and the nominal diameter of the branch pipe shall not be less than 10mm; b. The setting of the air branch pipe shall be determined according to the capacity of the air bottle, and the capacity of the selected air bottle shall not be less than the requirement of being able to remotely control all pneumatic quick-closing valves for 3 times.
4.8 Valves are made of bronze or forged steel: including safety valves, stop valves, stop check valves, pressure gauges, plug valves and control valves, etc. These accessories must meet the requirements for marine use. 5 Test methods
5.1 Appearance inspection
Inspect the appearance, material selection, accessories and dimensions of the air bottle, control box and device piping system. The inspection results should meet the requirements of 4.5, 4.6, 4.7a and 4.8 respectively.
5.2 Nondestructive testing
5.2.1 The first-made or transferred air bottle should be subject to welding process approval, which includes positive bending test, reverse bending test, transverse tensile test of welded joints, macroscopic test, fracture structure inspection, etc. The welded test plate should be subjected to 100% X-ray inspection; each weld should be subjected to 10% X-ray inspection. The film evaluation is in accordance with GB3323, and the weld level I is considered qualified. 6
CB/T3658-1995
5.2.2 When unacceptable defects are found on the weld of the air bottle, they must be repaired after removal. The number of repairs on the same part should not exceed two times. After repair, only X-ray film is taken as required. 5.3 Strength test and sealing test
The strength and sealing tests of air bottles, device piping and accessories shall be carried out in accordance with the requirements of the "Rules for Classification and Construction of Steel Seagoing Vessels". 5.4 Maneuvering test
After the device is assembled, the air bottle is inflated to 0.7MPa, and then conduct the remote control test of the pneumatic quick closing valve, and the result shall meet the requirements of Article 4.7b.
6 Inspection rules
The device shall undergo type inspection and factory inspection. 6.1 In any of the following cases, the device shall undergo type inspection: a.
When a new product is put into production or an old product is transferred to another factory for production; when there are major changes in product design, process or materials that may affect the main performance of the product; when the ship inspection department or the national quality supervision agency proposes a random inspection requirement; batch production is conducted once every 4 years.
The requirements for type inspection and factory inspection shall be in accordance with the provisions of Table 5. 6.2
Appearance inspection
Strength and sealing test
Operation test
Non-destructive testing
Type inspection
Factory inspection
The device shall be inspected and qualified in accordance with the provisions of Table 5 before it can be shipped out of the factory after the quality inspection department issues a certificate of conformity. Marking, packaging, transportation and storage
Each device shall be provided with a nameplate in a conspicuous position of the control box, and the following contents shall be indicated on the nameplate: a.
Product name:
Model and standard number;
Working pressure, MPa;
Design pressure, MPa;bzxz.net
Total weight, kg;
Volume, m2;
Ship inspection mark;
Manufacture number;
Manufacturer name and trademark;
Manufacture year, month and day.
7.2The manufacturer shall design the packaging according to the specific conditions of this product and transportation. 7.3
Documents accompanying the product
Technical conditions for acceptance and supply;
Instruction manual;
Ship inspection certificate.
7.4The spare part supplied is a safety valve spring. Requirements
5 The device should be stored in a dry room.
Additional Notes:
CB/T3658-1995
This standard was proposed by the Pipeline Technical Committee of the National Technical Committee for Standardization of Marine Machinery. This standard is under the jurisdiction of the 603 Institute of China State Shipbuilding Corporation. This standard was drafted by the Shanghai Ship Research and Design Institute; the 603 Institute participated in the drafting. The main drafters of this standard are Wu Xiansheng, Fang Xianting, Wu Shaozeng, Fan Shunjin, Tang Heyi, Song Xuezhong, and Sun Ming. 8
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