Some standard content:
168 47.20. 30
Alternative number: 9841-2002
Ship industry standard of the People's Republic of China
CB/T 3941-2001
Modular hvdraulic stack valve for ship2001-11-15 Issued
Issued by Commission of Science, Technology and Industry for National Defense
2002-02-01 Implementation
CB/T 3941-2001
When this standard was submitted for preparation, the relevant clauses in GB7[352:1992 Technical conditions for small control of pipes were taken into consideration. According to the pollution level specified in the standard, GB/14039-1993 Pressure relief and external pollution control is adopted. This standard was proposed by the Hydraulic and Pneumatic Technical Committee of the National Machinery Standardization Technical Committee. This standard is applicable to the following industries. Drafting year: China Energy Industry Association Technical Research Institute, Wu Jicheng Machinery Co., Ltd. Main drafters of this standard: Chong Zhenzhong, Ye Rongke, Fang Jiaokuo. 1 Scope
CB/T 3941-2001
Marine superimposed hydraulic combination
This standard specifies the classification, requirements, test and supervision methods, inspection rules and signs, transportation and storage of superimposed hydraulic combination adjustment (micro-hydraulic combination adjustment) with nominal pressure of 1.1.2.
This standard is applicable to the design and use of superimposed hydraulic combination adjustment (micro-hydraulic combination adjustment) with micro-pressure oil as the main component.
2 Reference to special standards
The following standards contain blanks, and the provisions of this standard are not valid when the standard is used. All the standards will be discussed in detail, and the following standards are used as reference. GB/T1348-19883 Technical conditions for castings of alloy structural vehicles GR:T 8077 194G GF09%2000 Technical conditions for parts performance, performance and other aspects of hydraulic pressure valves G/13852-502 Technical conditions for hydraulic pressure valves 5B·? ! 439! 99? Hydraulic curtain system engineering department medium solid rest effect pollution etc. embedded code 3 classification 31 parameter effect combination of basic teaching see table.
Nominal diameter
3. 2 Marking!
3.2.1 The expression method of the valve model is stipulated as follows: ZF
Nominal flow
Nominal diameter
Nominal force
Zhongzheng valve version
3.2.2 Marking 5
The nominal diameter is 1 and the nominal small force is 81.2MP. The combination valve mark is: combination 116CB94001
3.3 The combination foot structure is shown in Figure 1. 3.4.2. Diameter 920mm, 32mm, including graphic symbols, as shown in Figure 3. BV
Figure 3 Diameter 20m, 32mm, combined smoke graphic symbols 3.5 Connection type and size
The standard type of connection is open connection 3. 5. 1. Diameter: 1. Combination adjustment and installation size: according to 4, H1
Figure 4. 16mm diameter combination connection size
CB/T3941-2001
3.5.2 Combination with 20mm diameter, installation base plate connection size according to Figure 5120
Figure 5. 20mm diameter combination, installation base plate connection size according to Figure 6s
Figure 6. 32mm diameter combination, installation base plate connection size according to
4. Requirements
4.1 Ring adaptability
The combination should be able to work with T under the following conditions:) Ring temperature use 5
CB/T 3941-2001
b) The working temperature of the above working conditions is 15-65℃;) Relative humidity 9, there is a gap:
) Yellow data: (-1) Number of moves: +7.:
4.2.1 The clearance between the components and the pins is guaranteed to be within the working temperature range. 4.2.2 The new parts must be removed and cleaned according to the removal process, and the socket and the seat are not allowed to have any residual materials. The parts are not allowed to have pores, fall off and melt, and the parts are treated effectively. 4.2.3 The surface is allowed to have scratches, and the surface is rough. 3.2m 4.2.4 The connecting nails should be made of steel. The performance level of the connecting medium should not be lower than 10.9% specified in (T/T309%).
4.3 Materials
The parts of the main enterprise should meet the requirements of Table 2, and other materials with equivalent performance to those specified in the table can also be used. Material, Table 2
Part name
Material brand
CT$0012
Standard number
CEATS077
Technical performance requirements for combined effect Index table Table 3
4.5 Appearance
Quality
Medical and
Safety limits
4.5.1 The surface of the combined parts is not exposed, and the name of the part is frozen
0. 25-- 0.33
4.5.2 The exposed surface of the metal should be treated with necessary equipment and painted with waterproof paint, material brand
scrva
≤:0. 10
4.5.3 The installation work is already on the plate or the surface is easy to be connected with the waterproof, and its surface is painted with seawater primer. 4.6,
The resistance of the valve should be able to record the nominal force of 1.0mm, and maintain the leakage and deformation for 3min. 4.7 The sealing combination should be able to maintain the leakage for 4 days under the nominal force of 1.0mm, and maintain for 3min. GR/: 307T
(-R/-3977
The force is lost
CB/T 3941-20Q1
The requirements for the internal elimination of the oil flow through the valve cavity should be: the solid particles of the test oil should not exceed 9/16 of the standard.
49
The group includes the following: After 10 times of continuous switching under the nominal pressure and constant flow, the parts and products shall not be damaged, and the performance index of the item shall not exceed 10% of the provisions in Table 3. 5 Test method
5.1 Test risk
5.1.1 Test circuit
5.1.1.1 Test circuit diagram7
1 1, 1 2 - Liquid: 2 1. 2 2 through the valve; 9 test instructions; 4 secretion, 5, 1, joint reading; one strong, +-2, 3-3—total E: F0-1, 2-2—this oiler, 1I-]. [--. 11-3, 1:-4- -]-3—IK force meter diagram test circuit diagram
CB/T 39412001
5.1.1.2 Note that no elements of pressure relief, flow rate or safety of the test system may be added in the given internal configuration, but they shall not affect the performance of the test combination.
5.1.1.3 The internal diameter of the pipes and joints connected to the test combination shall be consistent with the actual specifications of the test combination: 5.1.2 Location of pressure measuring points
5.1.21 The stop point shall be located between the source (the upstream of the flowmeter and the oxygenator) and the upstream of the test oxygenator valve. The distance from the bypass source shall be not less than 10 times the inner diameter of the bypass pipe. The distance from the test combination valve shall be not less than 5 times the inner diameter of the bypass pipe. 5.1.2.2 The outlet pressure measuring point shall be located not less than 10 times the inner diameter of the pipe downstream of the test combination valve. 5.1.3 The diameter of the pressure measuring hole
the pressure measuring hole shall be not less than 10 mm. 5.1.3.1
5.1.3.2 The depth of the measuring line shall not be less than the vertical axis of the measuring line. The measuring pressure axis and the measuring hole shall be vertical. The angle between the inner surface of the measuring hole and the measuring hole shall be sharp, but not sharp. 5.1.3.3
5. 1. 3. 4
The measuring pressure point and the measuring instrument shall be connected to the pipeline three concentrations. 5.1.4 The measuring point position shall not exceed 15% of the total upstream of the measured inlet of the test combination. 5.2 Test parts
5. 2. 1 Test fluid
5.2.1.1 The viscosity of the hydraulic oil is 28.8mm/5~95.5m/s when the hydraulic oil is at 40°C: 5.2.1.2 The lubrication temperature of the pressure reducing pool is 0, except for special regulations. In the test formula, the test soil 5.2.1.3 The level of degassing is 0, the pollution level of the industrial oil should not be higher than that of the industrial oil. 5.2.2 The standard of measuring instruments should comply with the requirements of the full table. 5.2.3 Test flow 5.2.3.1 Test results during type inspection When the nominal net flow of the tested combination valve is less than 200L/m, the test flow rate shall not be less than the nominal flow rate of the tested combination valve. When the nominal flow rate of the tested combination valve is greater than 300L/m, and the test equipment is limited, the test flow rate of 2/m is allowed to enter the test. In the future, the technical indicators shall be modified accordingly. 5.2.3. "Test flow rate during inspection: When the depth of the test unit is not less than 0, the test flow rate is: When the nominal flow rate of the installed assembly is 200L/min, the test flow rate is 200[/minL. 5.3 Appearance
Check the appearance of the assembly by pressure measurement: its results shall comply with the provisions of 4.5. 5.4 Inject -.5 times the displacement pressure of oil into the injection port of the assembly. Maintain the pressure for 3-1 hour. The result shall comply with the provisions of 4.6. 7
CH/T 3941—2001
Combined limit AC oil 11 into the juice t.25 times the nominal foot force of the oil concentration, 3 mir per day, the result should meet the requirements of 4.7, 5.6
5.6.1 The internal leakage test of the consumption limit is divided into the source port and R several into the pool, overflow 2-1, to 70 and 30 years after the training, the nest should meet the requirements of 4.4. 5.6.2 Single room and this reading of the internal leakage test is to the P oil port and the port into the, adjust the "overflow reading 2-.. add full 117M, 10, respectively measure the leakage of the flushing port, the results are consistent with 1.1 or fixed.
5.7 frequency pressure
A Shan 1 wash, book swim lumen 2-2, make the oil bed The pressure rises. When oil can flow from the A port, note the pressure gauge reading of the × injection port. The result should meet the requirements of 4.4. 58 Stop
5.8.1 Small loss test of stop valve core in the middle position. Connect the C port and inject oil from AV or port. Measure the stop pressure of A and W oil. The difference between the two is the stop pressure when in the middle position. The result is the recommended loss. The requirements of 4.4 should be met. 5.8.2 Small loss test of the pressure of the sliding valve core when the sliding valve core is in the middle position. Use the P valve to inject oil into the C and B ports respectively. The two-position four-way solenoid valve is turned on. Measure the difference between the pressure values of AC, AV and B respectively. The difference between the two is the stop pressure value. The result should meet the requirements of 4.4. 5.9 Cleanliness
Use particle tax meter The inspection team will limit the cleanliness, and the result shall meet the requirements of 4.8. 5.10 Left life test
Full flow steel 2:, yellow A: or agent 11 new industry is the nominal pressure, the two-position four-phase electric fuel is repeatedly passed through the negative direction, the rate is 60 times/min: after the switching is continued for 100,000 times, the result shall meet the requirements of 4. 5.11 Environmental operation
The compatibility test of this B/T132 in 1.6 is carried out by the force method. The results shall meet the requirements of 4.. 6 Inspection regulations
8.1 Inspection classification
The inspection is divided into type inspection and factory inspection. 6.2 Type inspection
According to the conditions listed in the list, the combination of negative and positive variables shall be randomly selected for type inspection. 6.2.1 a) Product trial production: b) Stop production for 3 years or more; d) Stop production for 4 years or more or produce 1000 units if there are major changes in product structure, materials or process. B.2.2 Type inspection items: After external testing, the test items shall be inspected and accepted. If the test is completed, the relevant test measures shall be taken. 6.3 Inspection items: CB/T required by the inspection requirements 3941-2001
Test force method
Article number
6.3.1 Before the group is put into use, the group shall be inspected and tested. Only when the inspection is qualified can it be put into use.6.3.2 The inspection order shall be in accordance with the provisions of Table 5.
6.4 Judgment rules
6.4.1 If any item in the series inspection is not qualified, the number of valves included in the test shall be confirmed. If there are still unqualified items, the combination shall be deemed to have undergone type inspection.
64.2 If any item in the inspection is unqualified, it shall not be used. 7.1 Product markings: A nameplate indicating the year and date shall be set in an obvious position. The nameplate shall include: () Product name, model number, manufacturer name, year, month and serial number; (d) Inspection mark: 7. Packing label: The following shall be marked on the front of the packaging: Product name and number, cargo number (raw material, net material), ordering unit name, shipping certificate and destination, inspection precautions and marks: packaging symbol, month and month.
B. Packaging, transportation and storage
8.1 Packaging
When the components leave the factory, the oil surface of the components shall be well sealed and shall not be separated. 8.1.3 The package of the components shall be smooth and solid. .4 The following technical documents and parts shall be contained in the full box: Packing list:
) Product certificate:
c) Instruction manual;
d List of all parts.
CB/T 3941—2001
8.2 Transportation
During transportation, the components shall be protected from damage and all parts shall be protected from damage. 8.3
The seal of the components shall be replaced every 2 months due to frequent storage. 12 The sliding valve core is subjected to the pressure loss test at the same time. Oil is supplied to 4C and port I respectively by P valve. The two-position four-way electromagnetic valve is turned on and off. The difference between the pressure values of AC, AV and B and the pressure value of the oil port are measured respectively. The difference between the two is the convex force loss head. The result shall meet the requirements of 4.4. 5.9 Cleanliness
The cleanliness of the group will be checked by the particle size calculation method. The result shall meet the requirements of 4.8. 5.10 Left life test
Full flow steel 2:, yellow A: or agent 11 new industry for the nominal pressure, the two-position four-phase electric combustion negative purchase repeatedly pass electricity, the rate is 60 times/min: carefully after 100,000 times of switching, the result should meet the requirements of 4.5.11 Environmental operation
Damage competition adaptability test This B/T132 1.6 standard research method is carried out. The results should meet the requirements of 4.6.6 Inspection and testing regulations
8.1 Age inspection classification
The inspection of the combined reduction is divided into type inspection and factory inspection. 6.2 Type inspection
According to the situation, the combination of negative changes is selected for type inspection. 6.2.1
a) Product trial production:
b) Turn! 1. Stop production for 3 years or soon resume production; 2.) There are major changes in product structure, materials or processes, which can not guarantee product performance: 3. Stop production for 4 years or plan to produce 1000 units: B.2.2 Type inspection items shall be carried out according to the requirements of B.2.3 Type inspection items shall be carried out according to the requirements of B.2.4 Type inspection items shall be carried out according to the requirements of B.2.5 Type inspection items shall be carried out according to the requirements of B.2.6 Type inspection items shall be carried out according to the requirements of B.2.7 Type inspection items shall be carried out according to the requirements of B.2.8 Type inspection items shall be carried out according to the requirements of B.2.9 Type inspection items shall be carried out according to the requirements of B.2.10 Type inspection items shall be carried out according to the requirements of B.2.11 Type inspection items shall be carried out according to the requirements of B.2.12 Type inspection items shall be carried out according to the requirements of B.2.13 Type inspection items shall be carried out according to the requirements of B.2.14 Type inspection items shall be carried out according to the requirements of B.2.15 Type inspection items shall be carried out according to the requirements of B.2.16 Type inspection items shall be carried out according to the requirements of B.2.17 Type inspection items shall be carried out according to the requirements of B.2.18 Type inspection items shall be carried out according to the requirements of B.2.19 Type inspection items shall be carried out according to the requirements of B.2.20 Type inspection items shall be carried out according to the requirements of B.2.21 3941-2001
Test force method
Article number
6.3.1 Before the group is put into use, the group shall be inspected and tested. Only when the inspection is qualified can it be put into use.6.3.2 The inspection order shall be in accordance with the provisions of Table 5.
6.4 Judgment rules
6.4.1 If any item in the series inspection is not qualified, the number of valves included in the test shall be confirmed. If there are still unqualified items, the combination shall be deemed to have undergone type inspection.
64.2 If any item in the inspection is unqualified, it shall not be used. 7.1 Product markings: A nameplate indicating the year and date shall be set in an obvious position. The nameplate shall include: () Product name, model number, manufacturer name, year, month and serial number; (d) Inspection mark: 7. Packing label: The following shall be marked on the front of the packaging: Product name and number, cargo number (raw material, net material), ordering unit name, shipping certificate and destination, inspection precautions and marks: packaging symbol, month and month.
B. Packaging, transportation and storage
8.1 Packaging
When the components leave the factory, the oil surface of the components shall be well sealed and shall not be separated. 8.1.3 The package of the components shall be smooth and solid. .4 The following technical documents and parts shall be included in the full package: Packing list:
) Product certificate:
c) Instruction manual;
d List of all parts.
CB/T 3941—2001
8.2 Transportation
During transportation, the components shall be protected from damage and all parts shall be protected from damage. 8.3bzxZ.net
The seal of the components shall be replaced every 2 months due to frequent storage. 12 The sliding valve core is subjected to the pressure loss test at the same time. Oil is supplied to 4C and port I respectively by P valve. The two-position four-way electromagnetic valve is turned on and off. The difference between the pressure values of AC, AV and B and the pressure value of the oil port are measured respectively. The difference between the two is the convex force loss head. The result shall meet the requirements of 4.4. 5.9 Cleanliness
The cleanliness of the group will be checked by the particle size calculation method. The result shall meet the requirements of 4.8. 5.10 Left life test
Full flow steel 2:, yellow A: or agent 11 new industry for the nominal pressure, the two-position four-phase electric combustion negative purchase repeatedly pass electricity, the rate is 60 times/min: carefully after 100,000 times of switching, the result should meet the requirements of 4.5.11 Environmental operation
Damage competition adaptability test This B/T132 1.6 standard research method is carried out. The results should meet the requirements of 4.6.6 Inspection and testing regulations
8.1 Age inspection classification
The inspection of the combined reduction is divided into type inspection and factory inspection. 6.2 Type inspection
According to the situation, the combination of negative changes is selected for type inspection. 6.2.1
a) Product trial production:
b) Turn! 1. Stop production for 3 years or soon resume production; 2.) There are major changes in product structure, materials or processes, which can not guarantee product performance: 3. Stop production for 4 years or plan to produce 1000 units: B.2.2 Type inspection items shall be carried out according to the requirements of B.2.3 Type inspection items shall be carried out according to the requirements of B.2.4 Type inspection items shall be carried out according to the requirements of B.2.5 Type inspection items shall be carried out according to the requirements of B.2.6 Type inspection items shall be carried out according to the requirements of B.2.7 Type inspection items shall be carried out according to the requirements of B.2.8 Type inspection items shall be carried out according to the requirements of B.2.9 Type inspection items shall be carried out according to the requirements of B.2.10 Type inspection items shall be carried out according to the requirements of B.2.11 Type inspection items shall be carried out according to the requirements of B.2.12 Type inspection items shall be carried out according to the requirements of B.2.13 Type inspection items shall be carried out according to the requirements of B.2.14 Type inspection items shall be carried out according to the requirements of B.2.15 Type inspection items shall be carried out according to the requirements of B.2.16 Type inspection items shall be carried out according to the requirements of B.2.17 Type inspection items shall be carried out according to the requirements of B.2.18 Type inspection items shall be carried out according to the requirements of B.2.19 Type inspection items shall be carried out according to the requirements of B.2.20 Type inspection items shall be carried out according to the requirements of B.2.21 3941-2001
Test force method
Article number
6.3.1 Before the group is put into use, the group shall be inspected and tested. Only when the inspection is qualified can it be put into use.6.3.2 The inspection order shall be in accordance with the provisions of Table 5.
6.4 Judgment rules
6.4.1 If any item in the series inspection is not qualified, the number of valves included in the test shall be confirmed. If there are still unqualified items, the combination shall be deemed to have undergone type inspection.
64.2 If any item in the inspection is unqualified, it shall not be used. 7.1 Product markings: A nameplate indicating the year and date shall be set in an obvious position. The nameplate shall include: () Product name, model number, manufacturer name, year, month and serial number; (d) Inspection mark: 7. Packing label: The following shall be marked on the front of the packaging: Product name and number, cargo number (raw material, net material), ordering unit name, shipping certificate and destination, inspection precautions and marks: packaging symbol, month and month.
B. Packaging, transportation and storage
8.1 Packaging
When the components leave the factory, the oil surface of the components shall be well sealed and shall not be separated. 8.1.3 The package of the components shall be smooth and solid. .4 The following technical documents and parts shall be contained in the full box: Packing list:
) Product certificate:
c) Instruction manual;
d List of all parts.
CB/T 3941—2001
8.2 Transportation
During transportation, the components shall be protected from damage and all parts shall be protected from damage. 8.3
The seal of the components shall be replaced every 2 months due to frequent storage. 1
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