SY/T 5095-1993 Test methods for pneumatic components and reversing valves for oil drilling equipment
Some standard content:
Petroleum and Natural Gas Industry Standard of the People's Republic of China SY/T 5095-93wwW.bzxz.Net
Pneumatic Components for Oil Drilling and Production Equipment
Test Methods for Directional 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 Directional Valves
SY/T 5095-—93
Dai Yu SY5095—86
This standard specifies the test items, test conditions and test methods for pneumatic component directional valves for oil drilling and production equipment. This standard applies to the test of directional valves for oil drilling and production equipment with compressed air as the working medium and a nominal pressure not greater than 1MPa. This standard does not apply to the test of electromagnetic reversing valves. 2 Reference standards
SY/T5027 Basic parameters of pneumatic components for oil drilling and production equipmentSY/T5043 General technical conditions for pneumatic components for oil drilling and production equipment3
Test items
Leakage test
Switching time test (only for air-controlled reversing valves), effective cross-sectional area S value test:
Positive belt reversing test;
Working environment temperature test;
Anti-vibration test;
Pressure test:
Durability test.
Test conditions
Test pressure
Leakage test, reversing time test, normal reversing test, port 6MPa: b Effective cross-sectional area S value test, durability test: o.5MPa: Pressure test, the test is 1.5 times the nominal pressure. 4.2 Test medium
The test medium should be purified, dry compressed air, a, dust content not more than 5mg/m
b dust particle size not more than 25μm;
pressure dew point not higher than 10C.
4.3 Test instruments and equipment should comply with the provisions of SY/T5043. 5 Test method
5.1 Leakage test
5.1.1 Test device
The circuit of the leakage test device is shown in Figure 1. Approved by China National Petroleum Corporation on November 16, 1993, implemented on May 1, 1994
SY/T5095-93
1 Gas source, 2-valve, 3-gas source processing device, 4-precision pressure gauge, 5-test valve; 8-water basin: 7-drum 5,1.1.1 The diameter of all components, pipelines and pipe joints in the test device shall not be less than the diameter of the test valve. The connection patterns in the test circuit shall comply with the provisions of SY/T5027.
5.1,1,2 The position of the pressure measuring point in the test device shall comply with the provisions of Figure 2. 00o1
1-gas source, 2-pressure measuring point, 3-test valve, 4-sensor joint; 5-pressure sensor 5,1,1 The pressure measuring port of the test device shall be made according to Figure 3. The depth of the Φ1 hole in the figure shall not be less than 1mm, and there shall be no burrs or protrusions at both ends of the hole.
D is the nominal diameter of the test valve
5.1.1.4 Each joint and connection in the test device should be sealed to ensure no leakage. 5,1.1.5 The basin 6 and the measuring cylinder 7 in Figure 1 can be replaced by a micro flow meter. 5.1.2 Test steps
5.1.2.1 Introduce compressed air that complies with the provisions of Chapter 4 into the air source port of the test valve, and keep the pressure constant during the entire test process. 2
SY/T 5095--93
5.1.2.2 Measure the flow of each air port that is isolated from the inlet at each position of the test valve. 5,1.2.3 Test 3 times and calculate the average value as the leakage value of the test valve. 5.2 Reversing time test
5.2.1 Test device
The circuit of the reversing time test device is shown in Figure 4. And it should comply with the provisions of 5,1,1.1 to 5,1,1.4. 2
Gas source; 2-valve: 3,4-gas source processing device; 5,12-precision pressure gauge: 6-solenoid valve: 7-control system; 8-data acquisition system (or recording device); 9: 10-pressure sensor, 11-test valve 5.2.2 Test steps
5.2.2.1 Introduce compressed air that complies with the provisions of Chapter 4 into the gas source port of the test valve, and keep the pressure constant during the entire test process. 5.2.2.2 Turn on the power supply and make the control system and data acquisition system (recording device) of the test device in normal working state. 5.2.2.3 Operate the control system to make the test valve change direction normally at the specified frequency, and measure the change time of the test valve. Each test shall not be less than 3 waveforms.
5,3 Effective cross-sectional area S value test
5.3.1 Test device
5.3,1.1 The circuit of the effective cross-sectional area S value test device is shown in Figure 6 and shall comply with the provisions of 5.1.1.1 to 5.1.1.4. Figure 5
1—Gas source: 2—Valve, 3—Gas source processing device: 4, 9—Two-position two-way solenoid valve, 5~—Precision pressure gauge; 6—Drain valve 7—Gas tank: 8—Electric contact pressure gauge: 10 Test valve, 11 Timer 2 The volume of the gas tank shall be selected according to the provisions of Table 1. 5.3.1.2
Nominal diameter
Gas tank volume
5.3.2 Test steps
SY/T 6095--93
5.3.2.1 Fill the gas end with compressed air that complies with the provisions of Chapter 4. 15
5.3.2.2 Control the test valve to discharge the compressed air in the gas tank into the atmosphere through the test valve, and record the discharge time when the gas tank pressure drops from 0.5MPa to 0.2MPa.
5.3.2.3 Repeat the test three times, calculate the average value t of the exhaust time, substitute it into the following formula, and calculate the effective cross-sectional area S value. I
.1gP+0.101
ESES-S
When S=4S, then S=Sh
Where: S
-effective cross-sectional area of exhaust solenoid valve (including inlet and outlet pipes) and test valve, mm: S
-effective cross-sectional area of exhaust solenoid valve (including inlet and outlet pipes), mm; → effective cross-sectional area of test valve, mm2:
gas tank volume, L;
t——exhaust time, s;
P. Initial pressure set in the gas tank, MPa; P-
-Residual pressure in the gas tank after exhaust, MPa: Room temperature, K.
5.3.2.4 Replace the exhaust channel and repeat 5.3.2.1~5,3.2.3. 5.4 Normal reversing test
5.4.1 Test device
The outline of the normal reversing test device is shown in Figure 6. And it should comply with the provisions of 5.1.1.1~6.1.1,4. om
Gas source: 2-valve, 3-gas source processing device, 4-precision pressure gauge: 5-test valve 5.4.2 Test steps
5.4.2.1 Introduce compressed air that meets the requirements of Chapter 4 into the air inlet of the test valve. 5.4.2.2 Operate the test valve to continuously reverse 5 and observe the reversing action. 5.5 Working environment temperature test
SY/T 5095--93
5.5,1 Place the test valve in a low temperature box and keep it in a 40°C environment for 6 hours.5.5.2 Take out the test valve and wait for it to return to room temperature, and then test it according to 6.1 and 5.4. 5.5.3 The test valve after the low temperature test is moved to a 60°C temperature control box and kept warm for 6 hours. 5.5.4 Take out the test valve and wait for the temperature to return to room temperature, and then test it according to 5.1 and 5.4. 5.6 Anti-perturbation test
5.6.1 Fix the test valve on the vibration test table and make the vibration table work for 30 minutes at a rate of 10-25Hz and an amplitude of 1mm. Then fix the test valve with simple packaging on the enhanced simulated automobile transportation vibration table or truck. 5.6.2 Start the enhanced simulated automobile transportation vibration table for 2 hours or make the truck run continuously on the third-class highway for 2 hours. Unpack and inspect the connections of the test valve, and conduct tests according to 5, 1 and 54. 5.7 Pressure test
5,7,1 Test device
5.7.1.1 The circuit of the pressure test device is shown in Figure 7, and shall comply with the provisions of 5.1, 1.1 to 5.1.1.4. 5.7.1.2 The nominal pressure of the optical components, connecting pipelines and joints used in the test circuit shall be 1.5 times higher than the nominal pressure of the test valve. Figure 7
Air source; 2—valve, 3 air source processing device; 4 booster device. 5, 7—precision pressure gauge, 6—pressure reducing valve, 8—test valve, 9—plug 5.7.2 Test steps
5.7.2.1 Introduce compressed air that complies with the provisions of Chapter 4 into the air source port of the test valve, and keep the pressure constant during the entire test process. 5.7.2.2 After maintaining the pressure for 1 minute, observe whether the test piece has leakage, cracks, deformation, etc. 5,8 Durability test
5.8.1 Test device
The circuit of the durability test device is shown in Figure 8 and shall comply with the provisions of 5.1.1.1 to 5.11.4. Figure 8
Air source: 2-valve: 3-air source processing device: 4-precision pressure gauge; 5-test valve: 6-gas-to-electric conversion device: 7-recording device; 8-control device
5.8.2 Test steps
SY/T 5095-93
5.B.2.1Introduce compressed air that complies with the provisions of Chapter 4 into the air source port of the test valve and keep the pressure constant during the entire test process. 5.8.2.2Operate the control mechanism to make the test valve continuously reverse at a frequency of 0.5 to 1 Hz. 5.8.2.3 After 3×10\ times of reversing, cleaning or lubricating agent is allowed, but parts replacement is not allowed. The test can be carried out continuously or intermittently. 5.8.2.4 After the test reaches the specified number of times, the test shall be carried out in accordance with Articles 5.1 and 5.4. Additional Notes:
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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