SY/T 5096-1993 Test method for pneumatic pressure regulating valves for oil drilling equipment SY/T5096-1993 standard download decompression password: www.bzxz.net

Petroleum and Natural Gas Industry Standard of the People's Republic of China SY/T 5096-93
Pneumatic components for oil drilling and production equipment
Test methods for pressure regulating valves
Published on November 16, 1993
China National Petroleum Corporation
Implemented on May 1, 1994
1 Subject content and scope of application
Petroleum and Natural Gas Industry Standard of the People's Republic of China Pneumatic components for oil drilling and production equipment
Test methods for pressure regulating valves
SY/T 5096--93
Replaces SY 6096-85
This standard specifies the test items, test conditions and test methods for pressure regulating valves for pneumatic components for oil drilling and production equipment. This standard applies to the test of pressure regulating valves for oil drilling and production equipment with compressed air as the working medium and a nominal pressure not exceeding 1MPa. 2 Reference standards
SY/T5027 Basic parameters of pneumatic components for oil drilling equipmentSY/T5043 General technical conditions for pneumatic components for oil drilling equipment3 Terms
3.1 Flow characteristics
The relationship between the outlet pressure and the outlet flow rate under constant inlet pressure conditions. 3.2 Flow characteristics
The relationship between the overflow flow rate and the outlet pressure when the downstream pressure exceeds the set outlet pressure value. 3.3 Pressure characteristics
The relationship between the outlet pressure and the inlet pressure under constant outlet flow conditions. 4
Test items
a. Flow characteristics test
b, overflow characteristics test,
c pressure characteristics test
d, pressure regulation performance test:
e. Leakage test,
f. Working environment temperature test,
9. Vibration resistance test,
h. Pressure test,
1. Durability test
5 Test conditions
5.1 Test pressure
a. Flow characteristic test, overflow characteristic test, pressure characteristic test, leakage test, 0.7MPa; b. Pressure regulating performance test, nominal pressure of the tested valve, c. Pressure test: 1.5 times the nominal pressure of the tested valve, d. Durability test, 0.5MPa.
5.2 Test medium
The test medium should be dried and purified compressed air: China National Petroleum Corporation approved on November 16, 1993 and implemented on May 1, 1994
a. Dust content is not more than 5mg/m
b. The dust particle size is not more than 20μm1
SY/T 5096--93
c. The pressure dew point is not higher than 10℃.
5.3 The test instruments shall comply with the provisions of SY/T5043 6 Test methods
6.1 Flow characteristic test
6.1.1 Test device
The schematic diagram of the test device is shown in Figure 1.
Circuit
1—gas source: 2, 14—valve, 3—gas source processing device: 4—inlet test conduit: 6, 10, 15 precision pressure gauge, 8—gauge: 7—water basin: 8—hose, 9—test valve, 11—outlet test conduit: 12—throttling: 13—flow meter: 16—non-overflow reduction room 6.1.1.1 The diameter of the pneumatic components, pipelines and pipe joints used in the test device shall not be less than the diameter of the test valve (excluding the hose). The connecting thread shall comply with the provisions of SY/T5027.
6.1.1.2 The test valve shall be connected to the test conduit or connected to the test conduit through the valve plate. The size of the test conduit is shown in Figure 2. 100
Flow direction
D is the nominal diameter of the test valve.
Test valve
SY/T 5096—93
6.1.1.3 The pressure measuring port in the test device shall be made according to Figure 3. The depth of the small hole 1 in the figure shall not be less than 1mm. There shall be no burrs or protrusions at both ends of the small hole.
D is the nominal diameter of the test valve.
6.1.1.4 Each gas path joint and connection in the test device shall have sealing measures to ensure no leakage. 6.1.2 Test steps
6.1.2.1 Close the bypass loop, and pass the compressed air specified in Chapter 5 into the gas source port of the test valve, and keep the pressure constant during the test.
Adjust the test valve so that the outlet pressure is 0.5MPa, and increase the outlet flow rate step by step to the specified value in Table 1. 6.1.2.2
Nominal
Test flow
Disk L/min
6.1.2.3 Record the outlet flow of each level of the tested valve and the corresponding concave pressure value. 6.1.2.4 Repeat the test three times, calculate the average value of its outlet pressure drop, and draw the flow characteristic curve (as shown in Figure 4) awo
Outlet flow: L/minwwW.bzxz.Net
6.2 Overflow characteristic test
6.2.1 Test device
The circuit of the test device is shown in Figure 1 and shall comply with the provisions of 6.1.1.1~~6.1.1.4. 6.2.2 Test steps
6.2.2.1 Close the bypass circuit, and pass the compressed air specified in Chapter 5 into the air source port of the tested valve, and keep the pressure constant during the entire test process.
6.2.2.2 Adjust the test valve to make the outlet pressure 0.2MPac and connect the labor circuit. Adjust the pressure reducing valve in the circuit to make the pressure value 0.2MPa, and then increase the pressure until it reaches the specified test pressure value.
SY/T 5096--93
6.2.2.4 Record the test valve outlet pressure and the corresponding overflow flow value. 6.2.2.5 Repeat the test three times and calculate the average value of the maximum overflow flow: and draw the overflow characteristic curve (as shown in Figure 5) Ba
Overflow flow, L/min
6.3 Pressure characteristic test
6.3.1 Test device
The circuit of the test device is shown in Figure 1 and shall comply with the provisions of 6,1.1.1 to 6.1,1.4. 6.3.2 Test steps
6.3.2.1 Close the bypass circuit, and introduce the compressed air specified in Chapter 5 to the air source port of the test valve, and keep the pressure constant during the entire test.
Adjust the test valve so that the outlet pressure is 0.2MPa and the outlet flow rate is 15L/min. Reduce the inlet pressure step by step until it reaches 0.25MPa. Record the inlet pressure of the test valve and the corresponding outlet pressure. Repeat the test three times, calculate the average value of its maximum pressure fluctuation and draw the pressure characteristic curve (as shown in Figure 6). a·t
Inlet pressure, MPa
6.4 Pressure regulation performance test
6.4.1 Test device
The circuit of the test device is shown in Figure 1. It should also comply with the provisions of 6.1.1.1 to 6.1.1.4. 6.4.2 Test steps
6.4.2.1 Close the bypass circuit and introduce the compressed air specified in Chapter 5 to the air source port of the test valve. 4
SY/T 5096-93
6.4.2.2 Adjust the test valve evenly and continuously so that the outlet pressure changes within the range specified in Table 2 and observe the rise and fall of the positive force. 6.4.2.3 Repeat the test three times and observe the pressure drop. Table 2
Nominal pressure
Adjustment range of outlet pressure
6.5 Leakage test
0.05-~0.8
6.5.1 Test device
The circuit of the test device is shown in Figure 7 and shall comply with the provisions of 6.1.1.1~~6.1.1.4. When the leakage of the test valve is large, a micro flow meter can be used instead of the measuring cup and basin.
1-gas source, 2, 8-valve: 3-gas source processing device: 4, 9-water basin, 5, 11-measuring cup: 6, 10-hose; 7-test valve: 12, 15 test tube: 13, 14 precision pressure gauge 6.5.2 Test steps
6.5.2.1 Introduce the compressed air specified in Chapter 5 to the gas source port of the test valve. 6.5.2.2 The test valve is not adjusted; test the leakage at the working port. Repeat the test three times and calculate the leakage in the non-working state. 6.5.2.3 Adjust the test valve so that the outlet pressure is 0.5MPa, and test the leakage at the exhaust port. Repeat the test three times and calculate the leakage in the working state.
6.6 Working environment temperature test
6.6.1 Put the test valve in a low temperature box and keep it warm in a 40℃ environment for 6h. Take out the test valve, wait for it to return to room temperature, and then conduct tests according to 6.4 and 6.5. 6.6.2
The test valve after low temperature test is moved to a 60℃ temperature control box and kept warm for 6 hours. 6.6.3
6.6.4 Take out the test valve, wait for it to return to room temperature, and then conduct tests according to 6.4 and 6.5. 6.7 Anti-operation perturbation test
6.7.1. Fix the valve under test on the vibration test bench, and make the vibration bench work for 30 minutes at a frequency of 10~~23Hz and an amplitude of 1mm. Then fix the valve under test in a simple package on the enhanced simulated automobile transport vibration bench or truck. 6.7.2 Start the enhanced simulated automobile transport vibration bench for 2 hours, or make the truck run continuously on the third-class highway for 2 hours. Unpack and check the connection parts of the valve under test, and test according to 6.4 and 6.5. 5
6.8 Pressure test
6.8.1 Test device
SY/T5096—93
The circuit of the test device is shown in Figure 8. And it shall comply with the provisions of 6.1.1.1-~6.1.1.4, all pressure-bearing components. The nominal pressure of the connecting pipeline and joints should be 1.5 times higher than the nominal pressure of the valve under test: Figure 8
1-gas source; 2-valve: 3-gas source processing device; 4-pressurization device: 5, 7-precision pressure square garment: 6-pressure reducing valve; 8-valve under test 6.8.2 Test steps
6.8.2.1Introduce the compressed air specified in Chapter 5 into the gas source port of the valve under test. 6.8.2.2After maintaining the pressure for 1 minute, observe whether the valve under test has leakage, cracks, deformation, etc. 6.9 Durability test
6.9.1 Test device
The circuit of the test device is shown in Figure 9 and shall comply with the provisions of 6.1.1.1~6.1.1.413
1-gas source: 2-valve: 3-gas source processing device, 4, 6, 11-precision pressure gauge, 6-test valve, 7-gas-electric conversion device 8 counter, 0-operating cylinder: 10-pressure reducing valve; 12-solenoid valve, 13-control device6.9.2 Test steps
6.9.2.1Introduce the compressed air specified in Chapter 5 into the gas source port of the test valve. 6
SY/T 5096-93
Adjust the control device so that the test valve operates at a frequency of 0.5~1Hz. After the test valve operates 3×10 times, it is allowed to be cleaned or lubricated, but parts shall not be replaced. The test can be carried out continuously or intermittently. 6.9.2.3
After the test reaches the specified number of times, test according to 6.4 and 6.5. 6.9.2.4
Additional instructions,
This standard is proposed and managed by the National Technical Committee for Standardization of Petroleum Drilling Equipment and Tools. This standard is drafted by the Jianghan Machinery Research Institute of China National Petroleum Corporation. The main drafter of this standard is Shen Shuguo.
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