CN214998594U - Ultrahigh-pressure electromagnetic directional valve test equipment - Google Patents
Ultrahigh-pressure electromagnetic directional valve test equipment Download PDFInfo
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- CN214998594U CN214998594U CN202120676167.5U CN202120676167U CN214998594U CN 214998594 U CN214998594 U CN 214998594U CN 202120676167 U CN202120676167 U CN 202120676167U CN 214998594 U CN214998594 U CN 214998594U
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Abstract
The utility model discloses a test device for an ultrahigh pressure electromagnetic directional valve, which comprises a hydraulic oil tank and a crude oil supply main pipe connected with the hydraulic oil tank, wherein the crude oil supply main pipe is connected with a supercharger; the supercharger is connected with the experimental branch unit, and an oil return port of the supercharger is connected with the hydraulic oil tank; the oil return main pipe is connected with the experimental branch unit and is connected with the hydraulic oil tank; wherein: the crude oil supply main pipe is sequentially provided with an oil absorption filter, a gear pump, a one-way valve, a pipeline filter and a pressure gauge; the experiment branch unit is at least connected with an experiment branch and a backpressure branch in parallel; respectively installing a high-pressure needle valve on each experiment branch and each backpressure branch, wherein the outlet of each high-pressure needle valve is connected with the inlet of the electromagnetic directional valve to be tested; and an outlet of the tested electromagnetic directional valve is connected with an oil return collecting pipe. Compared with the existing ultrahigh pressure pump system, the ultrahigh pressure pump system has the advantages of long service life, high reliability, better safety, small heat productivity and cost lower than 2 times.
Description
Technical Field
The utility model belongs to the technical field of the experimental technique of establishing of solenoid operated directional valve, especially, relate to an ultrahigh pressure solenoid operated directional valve test equipment.
Background
In recent years, with the rapid development of engineering machinery, the demand for ultrahigh pressure hydraulic elements is increasing day by day, and higher requirements are put forward on the performance reliability of ultrahigh pressure hydraulic valves, so that ultrahigh pressure test equipment needs to be developed to test the performance of the ultrahigh pressure test equipment, improve or check the service performance of the ultrahigh pressure test equipment, find problems in advance and solve the problems. In view of the ultrahigh pressure test equipment at home and abroad, the ultrahigh pressure hydraulic technology at home and abroad is mature, and various ultrahigh pressure elements are widely applied to industrial equipment, such as international well-known brands of American HAWE, German BUCHER, Switzerland BIERI and the like. However, China develops slowly in this aspect, the foundation is weak, the ultrahigh pressure hydraulic technology is not obviously improved, certain technology accumulation is not formed, the reliability is poor, the ultrahigh pressure hydraulic technology cannot be widely applied to industrial equipment, and the ultrahigh pressure hydraulic technology mainly depends on import. However, in China, research and development manufacturers of test equipment of the ultrahigh pressure valve are few, the existing high-pressure test equipment has the problems of low universality and standardization level, short service life, poor reliability and the like, the test pressure is about 35MPa, and the ultrahigh pressure test equipment belongs to the ultrahigh pressure category when the pressure is more than 32 MPa. The ultrahigh pressure hydraulic component cannot be effectively detected and evaluated.
Although some manufacturers in China autonomously develop ultrahigh pressure pumps for ultrahigh pressure tests, the ultrahigh pressure pumps have the following problems: short service life, low safety, high cost and large flow pressure fluctuation. Therefore, aiming at the current situation and the quality control of the ultrahigh pressure element, the ultrahigh pressure electromagnetic directional valve test equipment is developed and developed, the directional valve which is used most frequently can be effectively detected by utilizing the equipment, the product quality is improved, the influence on the performance of the whole machine after the ultrahigh pressure valve is operated on the machine is avoided, meanwhile, test data support is provided for the research and development design of the ultrahigh pressure valve, and the valve is convenient to optimize and improve.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a long service life, reliability are high, the security is better, calorific capacity is little, can be used to the performance verification when dispatching from the factory, improve the qualification rate that dispatches from the factory, to the super high pressure solenoid directional valve test equipment and the application method that good product quality closed.
The utility model is realized in such a way, and relates to a test device for an ultrahigh pressure electromagnetic directional valve; the ultrahigh pressure electromagnetic directional valve test equipment comprises: the system comprises a hydraulic oil tank and a crude oil supply main pipe connected with the hydraulic oil tank, wherein the crude oil supply main pipe is connected with a low-pressure oil supply port P1 of a supercharger; a high-pressure output port Ph of the supercharger is connected with the experimental branch unit, and an oil return port T of the supercharger is connected with the hydraulic oil tank through a safe oil return pipe; the oil return main pipe is connected with the experiment branch unit and is connected with a hydraulic oil tank;
wherein: the crude oil supply main pipe is sequentially provided with an oil absorption filter, a gear pump, a one-way valve, a pipeline filter and a pressure gauge, wherein the gear pump is connected with a gear pump driving motor, and a throttle valve communicated with a safe oil return pipe is arranged between the pipeline filter and the one-way valve; a low-pressure overflow valve and a two-position four-way electromagnetic valve are also arranged between the crude oil supply main pipe and the safe oil return pipe;
the experiment branch unit is at least connected with an experiment branch and a backpressure branch in parallel; respectively installing high-pressure needle valves on one experiment branch and one backpressure branch, wherein the outlet of the high-pressure needle valve is connected with the inlet of an experimental electromagnetic directional valve; and an outlet of the tested electromagnetic directional valve is connected with an oil return collecting pipe, and the oil return collecting pipe is provided with a loading pressure regulating valve, a loading throttle valve and a flowmeter.
Above-mentioned technical scheme is preferred, still be equipped with the heater that is used for heating fluid on the hydraulic tank for detect the temperature sensor of the interior fluid temperature of hydraulic tank. In the normal experiment process, the heater does not work, when the temperature sensor detects that the temperature of the oil is lower than the temperature required by the experiment, the heater automatically starts to heat until the temperature meets the experiment temperature requirement, and stops working;
according to the preferable technical scheme, the oil leakage collecting box is arranged below the crude oil supply main pipe and the experiment branch unit and used for collecting oil leakage in the experiment process of the crude oil supply main pipe and oil leakage in the disassembly and assembly process of the experiment branch unit by the experiment electromagnetic directional valve, and the automatic recovery to the hydraulic oil tank is realized.
Preferably, the oil return main pipe is provided with an air-cooled radiator; in the normal experiment process, the radiator does not work, when the temperature sensor detects that the temperature of the oil liquid exceeds the temperature required by the experiment, the air-cooled radiator automatically starts cooling, and stops working until the temperature meets the temperature requirement of the experiment;
above-mentioned technical scheme is preferred, be equipped with empty filter on the hydraulic tank for maintain oil tank internal pressure and atmosphere balance, avoid the pump cavitation phenomenon probably to appear, can be arranged in the filth in the filtration fluid when refueling again, communicate with the atmosphere all the time in the experimentation, do benefit to the hydraulic pump oil absorption.
Preferably, the hydraulic oil tank is provided with a liquid level thermometer; the hydraulic oil tank can display the liquid level and the temperature of oil in the hydraulic oil tank in real time.
The utility model has the advantages and technological effect:
at first, the utility model discloses a high-pressure solenoid directional valve test equipment compares with current superhigh pressure pump system, and long service life, reliability are high, the security is better, calorific capacity is little, the cost is less than more than 2 times. The method can be used for experimental verification in the design process of an ultrahigh pressure hydraulic valve development manufacturer, provides experimental data support for research and development designers, and improves the safe service life and reliability. The method can be used for performance verification when leaving the factory, improves the qualification rate of leaving the factory and improves the quality of the product.
Adopt the utility model discloses the advantage that has in the experimentation:
1. the oil way switching valve used in the experiment is a high-pressure needle valve, so that the pressure resistance is high, no leakage exists, and the experiment result is accurate and reliable;
2. an upgrade interface is reserved to meet future requirements, and upgrade cost is reduced. And the multi-station experiment can be flexibly switched, so that the test efficiency is improved.
3. The temperature sensor is used for monitoring the oil temperature in real time, and the constant temperature control is realized by controlling the starting and stopping of the heater and the radiator.
4. The experimental data acquisition is accurate and reliable, and the operation is convenient and rapid.
Drawings
FIG. 1 is a hydraulic schematic diagram of embodiment 1 of the present invention;
fig. 2 is a hydraulic schematic diagram of embodiment 2 of the present invention.
In the figure, 1, an oil drain ball valve; 2. an oil absorption filter; 3. a motor; 4. a low noise gear pump; 5. a one-way valve; 6. a throttle valve; 7. a line filter; 8. a pressure gauge; 9. a low pressure relief valve; 10. a two-position four-way solenoid valve; 11. a supercharger; 12. 13, a high-pressure needle valve; 14. an experimental electromagnetic directional valve; 15. an oil return header pipe; 16. a pressure sensor; 17. a high pressure needle valve; 18. loading a pressure regulating valve; 19. loading a throttle valve; 20. a flow meter; 21. an air-cooled radiator; 22. an air filter; 23. a liquid level meter; 24. a hydraulic oil tank; 25. a heater; 26. an oil leakage collection box; 27. a temperature sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
wherein: the crude oil supply main pipe is sequentially provided with an oil absorption filter 2, a gear pump 4, a one-way valve 5, a pipeline filter 7 and a pressure gauge 8, wherein the gear pump is connected with a gear pump driving motor 3, and a throttle valve 6 communicated with a safe oil return pipe is arranged between the pipeline filter and the one-way valve; a low-pressure overflow valve 9 and a two-position four-way electromagnetic valve 10 are also arranged between the crude oil supply main pipe and the safe oil return pipe;
the experiment branch unit is at least connected with an experiment branch and a backpressure branch in parallel; a high-pressure needle valve 13 is respectively arranged on each experiment branch and each backpressure branch, and the outlet of the high-pressure needle valve is connected with the inlet of the electromagnetic directional valve to be tested; the outlet of the tested electromagnetic directional valve is connected with a return oil collecting pipe 15, and the return oil collecting pipe is provided with a loading pressure regulating valve 18, a loading throttle valve 19 and a flowmeter 20.
Above-mentioned technical scheme is preferred, still be equipped with the heater that is used for heating fluid on the hydraulic tank for detect the temperature sensor of the interior fluid temperature of hydraulic tank. In the normal experiment process, the heater does not work, when the temperature sensor detects that the temperature of the oil is lower than the temperature required by the experiment, the heater automatically starts to heat until the temperature meets the experiment temperature requirement, and stops working;
according to the preferable technical scheme, the oil leakage collecting box is arranged below the crude oil supply main pipe and the experiment branch unit and used for collecting oil leakage in the experiment process of the crude oil supply main pipe and oil leakage in the disassembly and assembly process of the experiment branch unit by the experiment electromagnetic directional valve and automatically recycling the oil leakage to the hydraulic oil tank 24.
Preferably, the oil return main pipe is provided with an air-cooled radiator; in the normal experiment process, the radiator does not work, when the temperature sensor detects that the oil temperature exceeds the temperature required by the experiment, the air-cooled radiator automatically starts cooling, and stops working until the temperature meets the experiment temperature requirement.
Above-mentioned technical scheme is preferred, be equipped with empty filter on the hydraulic tank for maintain oil tank internal pressure and atmosphere balance, avoid the pump cavitation phenomenon probably to appear, can be arranged in the filth in the filtration fluid when refueling again, communicate with the atmosphere all the time in the experimentation, do benefit to the hydraulic pump oil absorption.
Preferably, the hydraulic oil tank is provided with a liquid level thermometer; the hydraulic oil tank can display the liquid level and the temperature of oil in the hydraulic oil tank in real time.
5.4 device principle
When the performance test is carried out, the tested electromagnetic directional valve is arranged on the oil path block of the test station, and the test equipment is started.
As shown in figure 1, in a normal state, the electromagnetic valve 10 and the test station 14 are not electrified, and the low-pressure overflow valve 9 is adjusted to zero pressure. When carrying out the performance experiment, motor 3 drives 4 fuel feeding of low noise gear pump and gives crude oil supply house steward, and solenoid valve 10 circular telegram is opened, and the booster is given in the fuel feeding, slowly adjusts low pressure overflow valve 9, makes experiment branch road unit pressure reach experimental pressure through the continuous pressure boost of booster 11. During testing, any one experiment branch unit can be selected for performance testing, two or more experiment branch units can be selected for simultaneous testing, and oil circuit switching is completed through the high-pressure needle valve 13. The back pressure branch is used for communicating the inlet and the outlet of the tested electromagnetic directional valve, and the branch can be used for a pressure test or a sealing test of the positive cavity and the negative cavity of the tested electromagnetic directional valve. A high-pressure needle valve 17 on the return oil collecting pipe 15 controls the outlet of the tested electromagnetic directional valve, and a loading pressure regulating valve 18, a loading throttle valve 19 and a flowmeter 20 are arranged on the return oil collecting pipe 15. The pressure sensors 12 and 16 are used for measuring the inlet and outlet pressures of the tested electromagnetic directional valve. During testing, one or two or more experimental units of the testing station 14 are electrified, and the voltage of the electromagnetic valve is controlled to perform performance testing. The pipeline filter 7 is used for filtering oil in the crude oil supply main pipe, and the cleanliness of the oil is guaranteed. The pressure gauge 8 is used for measuring the pressure of the crude oil supply main pipe. After the test is finished, the pressure of the crude oil supply main pipe is reduced to zero by adjusting the low-pressure overflow valve 9, the crude oil supply main pipe is electrified by the experimental electromagnetic directional valve, the loading pressure regulating valve 18 or the loading throttle valve 19 is completely loosened, the oil of the return oil collection pipe is unloaded back to the hydraulic oil tank 24, the experimental electromagnetic directional valve is detached, and the next experiment is continued. The hydraulic oil tank 24 is respectively provided with a heater 25, an air-cooled radiator 21 and a temperature sensor 27 for controlling the temperature of the system oil. If the temperature is too low and is lower than the preset value and is initially set to be 15 ℃ during the test of the equipment, the heater 25 automatically starts heating to reach the test temperature; if the temperature of the oil liquid is higher than the preset value and is initially set to be 50 ℃ in the equipment test process, the air-cooled radiator 21 automatically starts cooling, and the temperature of the oil liquid is reduced to the test temperature.
The test device also has other expanded functions:
1) an upgrading interface is reserved in the equipment, and the highest test pressure can reach 250MPa only by replacing a supercharger with a larger supercharging ratio;
2) according to the requirement of test beat, the number of test stations can be increased, and the test flow is increased;
the oil path block at the test station is replaced, and other pressure valves, flow valves and the like with the same specification can be tested. It should be noted that, when other hydraulic valve products are carried out, the maximum pressure, the maximum flow, the plug form and the voltage value of the tested electromagnetic directional valve need to be confirmed, and the function test cannot be carried out when any condition is not met.
The experimental method based on the ultrahigh pressure electromagnetic directional valve test equipment comprises the following steps: the method comprises the following specific steps:
s1, carrying out compressive strength test; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, closing an experimental electromagnetic directional valve, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to gradually increase from zero to nominal pressure, observing the state of the experimental electromagnetic directional valve in an adjusting process, and checking whether all parts deform after the adjustment. If the deformation is within the allowable range, the tested valve is qualified; if the deformation is out of the allowable range, the tested valve is unqualified;
s2, high-pressure sealing test; firstly, carrying out a P port high-pressure sealing test of a positive cavity of an experimental electromagnetic directional valve, starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, closing the experimental electromagnetic directional valve, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to be gradually increased from zero to nominal pressure, and observing the state of the experimental electromagnetic directional valve in the test process; and secondly, performing a high-pressure sealing test on the R port of the reverse cavity of the tested electromagnetic directional valve, closing the high-pressure needle valve 13 on the test branch and the high-pressure needle valve 17 on the return oil collecting pipe 15, opening the high-pressure needle valve 13 on the back pressure branch, enabling pressure oil to flow to the R port of the reverse cavity of the tested electromagnetic directional valve through the return oil collecting pipe 15, observing the state of the tested electromagnetic directional valve in the test process, and checking whether all parts are deformed or not after the test is completed. If the deformation is within the allowable range, the tested valve is qualified; if the deformation is out of the allowable range, the tested valve is unqualified;
s3, response characteristic test; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, adjusting an overflow valve 9 to enable the pressure of an experiment branch unit pressure sensor 12 to be the nominal pressure of the electromagnetic directional valve to be tested, enabling the passing flow to be the test flow, opening a high-pressure needle valve 17, and adjusting a loading overflow valve 18 to enable the back pressure of the electromagnetic directional valve to be tested to be zero. Opening and closing the tested electromagnetic directional valve, recording the opening and closing process of the tested electromagnetic directional valve by using a pressure sensor 12, and measuring the opening time, the closing time, the opening lag time and the closing lag time of the tested electromagnetic directional valve;
s4, performing internal leakage test; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, closing an experimental electromagnetic reversing valve, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to change from zero to a nominal pressure range, opening a high-pressure needle valve 17, and measuring the leakage amount at the outlet of the experimental electromagnetic reversing valve by using a flowmeter (20);
s5, positive pressure loss; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to be a certain value, enabling an experimental electromagnetic directional valve to be completely opened, and enabling the flow to change from zero to the experimental flow range; measuring the pressure loss of the tested electromagnetic directional valve by using the pressure sensors 12 and 16 of the test branch unit, drawing a qv-delta p characteristic curve, and judging whether the pressure loss is in a designed allowable range or not according to the curve;
s6, reverse pressure loss; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to be a certain value, enabling an experimental electromagnetic directional valve to be completely opened, and enabling the flow to change from zero to the experimental flow range; measuring the reverse pressure loss of the tested electromagnetic directional valve by using the pressure sensors 12 and 16 of the test branch unit, drawing a qv-delta p characteristic curve, and judging whether the pressure loss is in a designed allowable range or not according to the curve;
s7, back pressure test; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, closing an experimental electromagnetic directional valve, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to gradually increase from zero to nominal pressure, closing a high-pressure needle valve 13 on an experimental branch unit, opening a backpressure branch high-pressure needle valve 13, enabling pressure oil to flow to a reverse cavity R port through an oil return collecting pipe 15, observing the state of the experimental electromagnetic directional valve in the test process, and checking whether all parts deform after the test is finished. If the deformation is within the allowable range, the tested valve is qualified; if the deformation is out of the allowable range, the tested valve is unqualified;
s8, durability life test; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, adjusting an overflow valve 9 to enable the pressure of an experiment branch unit pressure sensor 12 to be the nominal pressure of an experiment electromagnetic directional valve, enabling the passing flow to be the experiment flow, repeatedly reversing the experiment electromagnetic directional valve, recording the action times of the experiment electromagnetic directional valve, wherein the action times are not less than 2 ten thousand, and checking whether main parts and main performance meet the design requirements.
In embodiment 2, please refer to fig. 2, two or more experimental branches are connected in parallel for multi-station simultaneous experiment of the experimental electromagnetic directional valve. An ultrahigh pressure electromagnetic directional valve test device and a use method; the ultrahigh pressure electromagnetic directional valve test equipment comprises: the hydraulic oil tank 30 and a crude oil supply main pipe connected with the hydraulic oil tank, wherein the crude oil supply main pipe is connected with a low-pressure oil supply port P1 of the supercharger; a high-pressure output port Ph of the supercharger is connected with the experimental branch unit, and an oil return port T of the supercharger is connected with the hydraulic oil tank through a safe oil return pipe; the oil return main pipe is connected with the experiment branch unit and is connected with a hydraulic oil tank;
wherein: the crude oil supply main pipe is sequentially provided with an oil absorption filter 2, a gear pump 4, a one-way valve 5, a pipeline filter 7 and a pressure gauge 8, wherein the gear pump is connected with a gear pump driving motor 3, and a throttle valve 6 communicated with a safe oil return pipe is arranged between the pipeline filter and the one-way valve; a low-pressure overflow valve 9 and a two-position four-way electromagnetic valve 10 are also arranged between the crude oil supply main pipe and the safe oil return pipe;
the experiment branch unit is connected with two or more experiment branches and a backpressure branch in parallel; the method comprises the following steps that a high-pressure needle valve 13 is respectively arranged on two or more experiment branches and a backpressure branch, and the outlet of the high-pressure needle valve is connected with the inlet of an experimental electromagnetic directional valve; the outlet of the tested electromagnetic directional valve is connected with a return oil collecting pipe 15, and the return oil collecting pipe is provided with a loading pressure regulating valve 18, a loading throttle valve 19 and a flowmeter 20.
The experimental method based on the ultrahigh pressure electromagnetic directional valve test equipment comprises the following steps: the method comprises the following specific steps:
s1, carrying out compressive strength test; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, closing an experimental electromagnetic directional valve, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to gradually increase from zero to nominal pressure, observing the state of the experimental electromagnetic directional valve in an adjusting process, and checking whether all parts deform after the adjustment. If the deformation is within the allowable range, the tested valve is qualified; if the deformation is out of the allowable range, the tested valve is unqualified;
s2, high-pressure sealing test; firstly, carrying out a P port high-pressure sealing test of a positive cavity of an experimental electromagnetic directional valve, starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, closing the experimental electromagnetic directional valve, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to be gradually increased from zero to nominal pressure, and observing the state of the experimental electromagnetic directional valve in the test process; and secondly, performing a high-pressure sealing test on the R port of the reverse cavity of the tested electromagnetic directional valve, closing the high-pressure needle valve 13 on the test branch and the high-pressure needle valve 17 on the return oil collecting pipe 15, opening the high-pressure needle valve 13 on the back pressure branch, enabling pressure oil to flow to the R port of the reverse cavity of the tested electromagnetic directional valve through the return oil collecting pipe 15, observing the state of the tested electromagnetic directional valve in the test process, and checking whether all parts are deformed or not after the test is completed. If the deformation is within the allowable range, the tested valve is qualified; if the deformation is out of the allowable range, the tested valve is unqualified;
s3, response characteristic test; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, adjusting an overflow valve 9 to enable the pressure of an experiment branch unit pressure sensor 12 to be the nominal pressure of the electromagnetic directional valve to be tested, enabling the passing flow to be the test flow, opening a high-pressure needle valve 17, and adjusting a loading overflow valve 18 to enable the back pressure of the electromagnetic directional valve to be tested to be zero. Opening and closing the tested electromagnetic directional valve, recording the opening and closing process of the tested electromagnetic directional valve by using a pressure sensor 12, and measuring the opening time, the closing time, the opening lag time and the closing lag time of the tested electromagnetic directional valve;
s4, performing internal leakage test; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, closing an experimental electromagnetic reversing valve, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to change from zero to a nominal pressure range, opening a high-pressure needle valve 17, and measuring the leakage amount at the outlet of the experimental electromagnetic reversing valve by using a flowmeter (20);
s5, positive pressure loss; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to be a certain value, enabling an experimental electromagnetic directional valve to be completely opened, and enabling the flow to change from zero to the experimental flow range; measuring the pressure loss of the tested electromagnetic directional valve by using the pressure sensors 12 and 16 of the test branch unit, drawing a qv-delta p characteristic curve, and judging whether the pressure loss is in a designed allowable range or not according to the curve;
s6, reverse pressure loss; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to be a certain value, enabling an experimental electromagnetic directional valve to be completely opened, and enabling the flow to change from zero to the experimental flow range; measuring the reverse pressure loss of the tested electromagnetic directional valve by using the pressure sensors 12 and 16 of the test branch unit, drawing a qv-delta p characteristic curve, and judging whether the pressure loss is in a designed allowable range or not according to the curve;
s7, back pressure test; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, closing an experimental electromagnetic directional valve, adjusting an overflow valve 9 to enable the pressure of an experimental branch unit pressure sensor 12 to gradually increase from zero to nominal pressure, closing a high-pressure needle valve 13 on an experimental branch unit, opening a backpressure branch high-pressure needle valve 13, enabling pressure oil to flow to a reverse cavity R port through an oil return collecting pipe 15, observing the state of the experimental electromagnetic directional valve in the test process, and checking whether all parts deform after the test is finished. If the deformation is within the allowable range, the tested valve is qualified; if the deformation is out of the allowable range, the tested valve is unqualified;
s8, durability life test; starting a gear pump driving motor 3 in a crude oil supply main pipe, opening a two-position four-way electromagnetic valve 10, adjusting an overflow valve 9 to enable the pressure of an experiment branch unit pressure sensor 12 to be the nominal pressure of an experiment electromagnetic directional valve, enabling the passing flow to be the experiment flow, repeatedly reversing the experiment electromagnetic directional valve, recording the action times of the experiment electromagnetic directional valve, wherein the action times are not less than 2 ten thousand, and checking whether main parts and main performance meet the design requirements.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention, such as increasing the number of crude oil supply main pipes and pressure boosters, increasing the number of experimental branch units, increasing the number of flowmeters, etc., should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an ultrahigh pressure solenoid directional valve test equipment which characterized in that: the system comprises a hydraulic oil tank (24), and a crude oil supply main pipe connected with the hydraulic oil tank, wherein the crude oil supply main pipe is connected with a low-pressure oil supply port (P1) of a supercharger; a high-pressure output port (Ph) of the supercharger is connected with the experiment branch unit, and an oil return port (T) of the supercharger is connected with the hydraulic oil tank through a safe oil return pipe; the oil return main pipe is connected with the experiment branch unit and is connected with a hydraulic oil tank;
wherein: the crude oil supply main pipe is sequentially provided with an oil absorption filter (2), a gear pump (4), a one-way valve (5), a pipeline filter (7) and a pressure gauge (8), wherein the gear pump is connected with a gear pump driving motor (3), and a throttle valve (6) communicated with a safe oil return pipe is arranged between the pipeline filter and the one-way valve; a low-pressure overflow valve (9) and a two-position four-way electromagnetic valve (10) are also arranged between the crude oil supply main pipe and the safe oil return pipe;
the experiment branch unit is at least connected with an experiment branch and a backpressure branch in parallel; a high-pressure needle valve (13) is respectively arranged on each experiment branch and each backpressure branch, and the outlet of the high-pressure needle valve is connected with the inlet of the electromagnetic directional valve to be tested; an outlet of the tested electromagnetic directional valve is connected with an oil return collecting pipe (15), and the oil return collecting pipe is sequentially loaded with a pressure regulating valve (18), a loading throttle valve (19) and a flowmeter (20).
2. The ultrahigh-pressure electromagnetic directional valve test apparatus according to claim 1, characterized in that: the hydraulic oil tank is also provided with a heater for heating oil; and the temperature sensor is used for detecting the temperature of the oil liquid in the hydraulic oil tank.
3. The ultrahigh-pressure electromagnetic directional valve test apparatus according to claim 1, characterized in that: and an oil leakage collecting box is arranged below the crude oil supply main pipe and the experiment branch unit and is used for collecting oil leakage in the experiment process of the crude oil supply main pipe and oil leakage in the disassembly and assembly process of the experiment branch unit by the experiment electromagnetic directional valve and realizing automatic recovery to the hydraulic oil tank (24).
4. The ultrahigh-pressure electromagnetic directional valve test apparatus according to claim 1, characterized in that: and an air-cooled radiator is arranged on the oil return main pipe.
5. The ultrahigh-pressure electromagnetic directional valve test apparatus according to claim 1, characterized in that: and an air filter is arranged on the hydraulic oil tank and used for maintaining the pressure in the oil tank to be balanced with the atmosphere.
6. The ultrahigh-pressure electromagnetic directional valve test apparatus according to claim 1, characterized in that: and a liquid level thermometer is arranged on the hydraulic oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120676167.5U CN214998594U (en) | 2021-04-01 | 2021-04-01 | Ultrahigh-pressure electromagnetic directional valve test equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120676167.5U CN214998594U (en) | 2021-04-01 | 2021-04-01 | Ultrahigh-pressure electromagnetic directional valve test equipment |
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| Publication Number | Publication Date |
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| CN214998594U true CN214998594U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120676167.5U Active CN214998594U (en) | 2021-04-01 | 2021-04-01 | Ultrahigh-pressure electromagnetic directional valve test equipment |
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| Country | Link |
|---|---|
| CN (1) | CN214998594U (en) |
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2021
- 2021-04-01 CN CN202120676167.5U patent/CN214998594U/en active Active
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