CN212007792U - High-pressure valve life test device - Google Patents
High-pressure valve life test device Download PDFInfo
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- CN212007792U CN212007792U CN202020436268.0U CN202020436268U CN212007792U CN 212007792 U CN212007792 U CN 212007792U CN 202020436268 U CN202020436268 U CN 202020436268U CN 212007792 U CN212007792 U CN 212007792U
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Abstract
The utility model relates to a high-pressure valve life test device, an electrically driven valve to be tested is placed in a high-pressure simulation container, a torque sensor is arranged between the valve to be tested and an electrically driven head, a strain gauge is arranged on the valve body, and the valve to be tested is connected with a valve internal pressure output system and is used for simulating the internal pressure load suffered by the inner wall of the valve body in the opening and closing process of the valve to be tested; the high-pressure simulation container is connected with the valve external pressure output system and is used for simulating the external pressure load of the outer wall of the tested valve under the condition of deep sea high-pressure environment; the collection, storage and control system is connected with the torque sensor, the strain gauge, the electrically-driven valve to be measured, the valve internal pressure output system and the pressure transmitter and is used for respectively controlling and realizing automatic opening and closing of the electrically-driven valve to be measured, internal pressure load, external pressure load and internal and external simultaneous pressure load are applied to the electrically-driven valve to be measured, and fatigue life test of the electrically-driven valve to be measured under the action of dynamic pressure load is realized.
Description
Technical Field
The utility model relates to a deep sea high-pressure valve test device, concretely relates to high-pressure valve life test device.
Background
At present, a great deal of research has been carried out at home and abroad aiming at the conventional valve service life testing technology, and various service life testing devices or platforms are also designed, so that a set of complete testing method for checking the service life index of the valve is formed. Particularly, in the aspect of the service life test of the marine valve under the static pressure environment condition, China already establishes a corresponding test standard CB/T339793 static pressure service life test of the marine valve. However, the method is still insufficient in the aspect of research on the life test technology of the high-pressure valve, and especially the research on the life test technology of the high-pressure valve under the comprehensive action of factors such as high water pressure, water pressure pulsation, valve cavitation and the like is basically blank. So far, no effective test method for evaluating the service life of the high-pressure valve is formed, no existing test standard can be referred to, and a dynamic pressure service life test device of the high-pressure valve is basically blank.
Disclosure of Invention
An object of the utility model is to provide a high-pressure valve life test device to solve current relevant test device blank, high-pressure valve life test method and aassessment standard take precautions against the scheduling problem that lacks. Utilize the utility model discloses an, can develop the high-pressure valve and press in and the external pressure life-span is experimental, realize that the high-pressure valve opens and closes automatic operation, valve key performance parameter real-time supervision, measured data also can realize automatic storage and classification to this high-pressure valve life test device can provide basis, effective data for developing the high-pressure valve reliability life assessment analysis based on the degradation data.
In order to achieve the above purpose, the technical scheme of the utility model is that: a high-pressure valve service life test device comprises a high-pressure simulation container, a valve internal pressure output system, a valve external pressure output system, a signal acquisition, storage and control system and a gas-liquid pipeline, wherein an electrically driven valve to be tested is placed in the high-pressure simulation container, and a torque sensor is arranged between the valve to be tested and an electrically driven head and used for measuring the opening and closing torque of the valve; a valve body of the measured valve is provided with a strain gauge for measuring the structural deformation of the valve; the tested valve is connected with the valve internal pressure output system and is used for simulating the internal pressure load on the inner wall of the valve body in the opening and closing process of the tested valve; the high-pressure simulation container is connected with the valve external pressure output system and is used for simulating the external pressure load of the outer wall of the tested valve under the condition of deep sea high-pressure environment; the pressure transmitter in the valve external pressure output system is used for respectively controlling and realizing the automatic opening and closing of the electrically-driven valve to be measured, so that the pressure load of the electrically-driven valve to be measured is automatically pressurized and decompressed according to requirements, the internal pressure load, the external pressure load and the internal and external simultaneous pressure loads are applied to the electrically-driven valve to be measured, and the fatigue life test of the electrically-driven valve to be measured under the action of the dynamic pressure load is realized.
Further, the valve internal pressure output system is composed of a pressure transmitter, a throttle valve, a liquid booster pump, an air source electromagnetic valve, an air source pressure gauge, an air source regulating valve, a pneumatic water injection pump, a manual pressure relief valve and a pneumatic pressure relief valve, wherein the liquid inlet end of the valve to be measured is connected with the pressure transmitter through a hydraulic pipeline, the liquid inlet end of the valve to be measured is connected with a liquid tank through the liquid booster pump, the pneumatic water injection pump and a filter, and the air inlet end of the liquid booster pump is connected with a compressed air inlet through the air source electromagnetic valve, the air source regulating; the air inlet end of the pneumatic water injection pump is connected with a compressed air inlet through an air source electromagnetic valve, an air source ball valve and a filter; the other path is connected with a liquid tank through a manual pressure relief valve; the liquid outlet end of the valve to be measured is connected with a pressure transmitter through a hydraulic pipeline, and the pressure transmitter is connected with a liquid tank through a throttle valve.
Further, valve external pressure output system comprises pressure transmitter, relief valve, pneumatic water injection valve, liquid booster pump, air supply solenoid valve, air supply manometer, air supply governing valve, liquid booster pump feed liquor end passes through the filter and connects the liquid case, and it is inside that the liquid end passes through pressure transmitter, relief valve connection high pressure simulation container, and the liquid case is still connected through pneumatic water injection valve to high pressure simulation container inside, and liquid booster pump inlet end passes through air supply solenoid valve, air supply governing valve, air supply ball valve, filter and connects the compressed air entry.
Further, collection, storage and control system comprises touch-sensitive screen, PLC controller, collection module, storage module, the PLC controller is connected touch-sensitive screen, storage module, collection module respectively, storage module is used for realizing long-time automatic preprocessing and the storage of measured data, and connect the printer for pass through the printer with measured data and print the test report.
Furthermore, an alarm module is arranged in the PLC and used for alarming the abnormal pressure of the inlet and outlet of the valve to be measured, alarming the abnormal pressure of the high-pressure simulation container, alarming the abnormal origin pressure gauge and alarming the abnormal opening and closing moment of the valve to be measured.
Further, the high-pressure simulation container comprises a cylinder body and an end cover, wherein a pressure relief hole is reserved at the bottom of the cylinder body and used for discharging liquid in the container when a test is finished; the side part of the cylinder body is of an arc structure, a pressure pressurization pipeline interface and five through holes are arranged on the end cover, and the five through holes are respectively used for connecting a valve internal pressure input pipeline, a valve internal pressure output pipeline, a valve external pressure input pipeline, a valve external pressure output pipeline and the connection between the valve and an electric driving head thereof.
Further, a pressure relief hole in the bottom of the high-pressure simulation container is connected with the water receiving tank through a manual drain valve.
The utility model has the advantages that:
the utility model discloses mainly by high pressure simulation container, press output system in the valve, valve external pressure output system, signal acquisition, storage and control system and gas-liquid pipeline constitute. Utilize this utility model device can develop the fatigue life test of high-pressure valve under the inside high-pressure effect of valve body, valve body outer wall high pressure effect and valve under inside and the simultaneous action of external pressure respectively. In the fatigue life test process, a signal acquisition, storage and control system in the device can monitor and collect key performance parameters of high-pressure valves such as opening and closing moment, inlet and outlet pressure, structural strain, leakage quantity and the like. The acquired and stored high-pressure valve key performance parameter data can provide basic data for carrying out high-pressure valve fatigue life assessment.
The utility model realizes the automatic opening and closing of the valve and the automatic pressurization and pressure relief of the pressure load according to the requirement through the PLC control; by designing the data storage module, long-time automatic preprocessing and storage of the measured data can be realized; the internal pressure load, the external pressure load and the internal and external simultaneous pressure loads can be applied to the high-pressure valve, and the fatigue life test of the high-pressure valve under the action of the dynamic pressure load is realized; by utilizing the service life device and various safety alarm devices thereof, unmanned, high-efficiency and long-term stable operation in the service life test process can be realized.
Drawings
FIG. 1 is a system diagram of a high pressure valve life testing apparatus of the present invention;
in the figure: 1. the system comprises a tested electric drive valve 1a, a valve 1b, an electric drive head 1c, a torque sensor 1d, a strain gauge 2, a high-pressure simulation container 2a, a manual drain valve 2b, a water receiving tank 3 and a signal acquisition, storage and control system; 4. the device comprises a pressure transmitter, 5, a safety valve, 6, a pneumatic water injection valve, 7, a throttle valve, 8, a liquid booster pump, 9, an air source electromagnetic valve, 10, an air source pressure gauge, 11, an air source regulating valve, 12, a pneumatic water injection pump, 13, an air source ball valve, 14, a manual pressure relief valve, 15, a pneumatic pressure relief valve, 16, a filter, 17, a liquid tank, 18 and a compressed air inlet, wherein a thick solid line represents a high-pressure pipeline, a thin solid line represents a low-pressure pipeline, a thick dotted line represents an air source pipeline, a thin dotted line represents an electric line, and a dot-dash line represents;
FIG. 2 is a schematic diagram of a high pressure simulation vessel;
wherein: (a) a front cross-sectional view, (b) a top end cover view;
2c is the barrel, 2d is the end cover, 2e is fixing bolt, 2f is the round pin axle, 2g is O type circle, 2h is the interior pressure input interface of valve, 2i is the interior pressure output interface of valve, 2j is the external pressure input interface of valve, 2k is the external pressure output interface of valve, 2l is valve and electric drive head connection interface.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
As shown in fig. 1, the utility model provides a pair of high-pressure valve life test device, including being surveyed valve 1, high pressure simulation container 2, the output system presses in the valve, and valve external pressure output system, signal acquisition, storage and control system 3 and parts such as gas-liquid pipeline constitute. The tested valve 1 is an electrically driven valve, and can realize automatic opening and closing actions; the valve 1a of the electrically driven valve is arranged in the high-pressure simulation container 2, and a torque sensor 1c is arranged between the valve 1a of the electrically driven valve and the electric driving head 1b and used for measuring the opening and closing moment of the valve; and a strain gauge 1d is arranged at the key position of the valve body of the valve 1a and is used for measuring the structural deformation of the valve. The valve internal pressure output system mainly comprises a pressure transmitter 4, a throttle valve 7, a liquid booster pump 8, an air source electromagnetic valve 9, an air source pressure gauge 10, an air source regulating valve 11, a pneumatic water injection pump 12, a manual pressure relief valve 14, a pneumatic pressure relief valve 15 and other parts, and is used for simulating the internal pressure load of the inner wall of the valve body in the opening and closing process of the valve. Wherein, the liquid inlet end of the valve 1a is connected with a pressure transmitter 4 through a hydraulic pipeline, and then the liquid inlet end of the valve passes through a liquid booster pump 8, a pneumatic water injection pump 12 and a filter 16 and is connected with a liquid tank 17, and the gas inlet end of the liquid booster pump 8 is connected with a compressed air inlet 18 through a gas source electromagnetic valve 9, a gas source regulating valve 11, a gas source ball valve 13 and the filter 16; the air inlet end of the pneumatic water injection pump 12 is connected with a compressed air inlet 18 through an air source electromagnetic valve 9, an air source ball valve 13 and a filter 16; the other path is connected with a liquid tank 17 through a manual pressure relief valve 14; the liquid outlet end of the valve 1a is connected with a pressure transmitter 4 through a hydraulic pipeline, and the pressure transmitter 4 is connected with a liquid tank 17 through a throttle valve 7.
The utility model discloses still design the linking bridge between high-pressure valve body and the electric drive head, guaranteed that the high-pressure valve is installed on the high-pressure vessel end cover sealedly, and guaranteed that the high-pressure valve is opening and close the in-process, rolling friction between valve rod and the end cover to it does not have the leakage to keep the friction surface sealed.
The valve external pressure output system is mainly composed of a pressure transmitter 4, a safety valve 5, a pneumatic water injection valve 6, a liquid booster pump 8, an air source electromagnetic valve 9, an air source pressure gauge 10, an air source regulating valve 11 and other parts, and simulates external pressure load of the outer wall of the valve under the condition of deep sea high-pressure environment. Wherein, the liquid inlet end of the liquid booster pump 8 is connected with the liquid tank 17 through the filter 16, the liquid outlet end is connected with the inside of the high-pressure simulation container 2 through the pressure transmitter 4 and the safety valve 5, the inside of the high-pressure simulation container 2 is also connected with the liquid tank 17 through the pneumatic water injection valve 6, and the gas inlet end of the liquid booster pump 8 is connected with the compressed air inlet 18 through the gas source electromagnetic valve 9, the gas source regulating valve 11, the gas source ball valve 13 and the filter 16.
As shown in fig. 2 (a) and (b), the high-pressure simulation container 2 includes a cylinder 2c, an end cap 2d, a fixing bolt 2e, a pin 2f, and an O-ring 2 g. The container wall thickness should be large enough to ensure that it is safe and reliable during the application of pressure loads. A pressure relief hole is reserved at the bottom of the cylinder body 2c and used for discharging liquid in the container after the test is finished; the side part of the cylinder body 2c is of an arc structure, and all pressure pressurization pipeline interfaces are arranged on the end cover 2d for convenience in installation; the total number of the through holes on the end cover 2d is 5, wherein the hole 2h is used for connecting the valve internal pressure input pipeline, the hole 2i is used for connecting the valve internal pressure output pipeline, the hole 2j is used for connecting the valve external pressure input pipeline, the hole 2k is used for connecting the valve external pressure output pipeline, and the hole 2l is used for connecting the valve and the electric drive head thereof. The bottom of the high-pressure simulation container 2 is connected with a water receiving tank 2b through a manual drain valve 2 a.
The acquisition, storage and control system 3 mainly comprises a touch screen, a PLC (programmable logic controller), acquisition software, acquisition hardware and the like. The acquisition, storage and control system 3 is respectively connected with three pressure transmitters 4, a torque sensor 1c and a strain gauge 1 d. Before testing, parameters such as test pressure, pressure maintaining time, emptying time and the like are set according to test requirements, testing is started by one key after parameter setting is completed, the whole testing process is automatically completed by the acquisition, storage and control system 3 according to the set parameters, manual intervention is not needed in the testing process, and the system automatically releases pressure after the testing is completed. In the testing process, key performance parameters of the valve, such as pressure at an inlet and an outlet of the valve, opening and closing moment of the valve, structural strain and the like, can be measured, and the acquired data can be temporarily or permanently stored. In the testing process, the opening and closing frequency of the valve can be set, degradation trend data of key performance parameters of the valve under different opening and closing frequencies (acceleration factors) are collected, the degradation characteristics of the key performance parameters are obtained through statistical analysis, and basic data can be provided for building a high-pressure valve (acceleration) service life testing model. The acquisition, storage and control system 3 can perform functions of sorting, classifying, displaying, basic operation and the like on the test data.
The acquisition, storage and control system 3 also has the function of compiling test reports, and can also store, print and the like in a document form. The PLC is internally provided with an alarm module, and can take test stopping measures in time, and the functions of the alarm module comprise valve inlet and outlet pressure abnormity alarm, high-pressure container pressure abnormity alarm, origin pressure gauge abnormity alarm and valve opening and closing moment abnormity alarm.
The gas-liquid pipeline comprises a high-pressure pipeline, a low-pressure pipeline, a gas source pipeline, a pressure relief pipeline and the like, wherein the high-pressure pipeline adopts a double-clamping sleeve sealing mode. When the pipe valve is connected with a pipe, the pipeline is inserted into the clamping sleeve connector, the front clamping sleeve is pushed into the connector body to form main seal with the pipeline, and the rear clamping sleeve inwards generates a hinge effect to firmly grasp the pipeline. The geometry of the rear ferrule facilitates the formation of a ferrule action that translates axial movement into radial compression on the tubing requiring a small assembly torque to operate. Finally, the rear clamping sleeve is stressed to slightly deform and clamp the outer wall of the pipeline, and the front clamping sleeve forms a main sealing surface to ensure effective sealing of high-pressure fluid.
One part of liquid in the liquid tank of the high-pressure valve service life test device returns to the liquid tank in a closed loop through a valve internal pressure output system, a tested valve 1, various high-pressure and low-pressure pipelines and the like, and the other part returns to the liquid tank in a closed loop through a valve external pressure output system, a high-pressure simulation container 2, various high-pressure and low-pressure pipelines and the like. The whole water supply system of the device presents a closed-loop pipeline, so that closed-loop and recycling of oil are realized, and the resources are greatly saved while the test efficiency is improved.
When the high-pressure valve service life test device is used for checking the service life index of the high-pressure valve, the high-pressure valve service life test device needs to continuously run for a long time, so that the reliability and the stability of the device have direct influence on the realization of a high-precision and high-efficiency service life test. Therefore, the utility model discloses a technical means include: 1) the adopted liquid and gas are treated by corresponding filters, so that the phenomenon of component failure caused by media is avoided; 2) the similar high-reliability device is selected for the electrical accessories with obviously low reliability indexes in the device; 3) all pipelines adopt high-pressure-resistant hard pipes, so that the pressure maintaining function of the system under a high-pressure condition is still effective; 4) the rubber pad, the O-shaped ring and other vulnerable parts in the device are replaced regularly.
The device can be used for carrying out the service life test of the high-pressure valve under the action of internal pressure or (and) external pressure. The test procedure was as follows: 1) before testing, putting the product into a high-pressure simulation container serving as a test cabin, accessing a test interface and closing a protective window; 2) switching on a power supply and an air source, and opening a collecting, storing and controlling system; 3) after parameters such as water injection time, test pressure, pressure maintaining time and the like are set, starting by one key. The acquisition, storage and control system automatically injects a test medium into a product and boosts the pressure to a set value; 5) when the pressure is increased to a set value, the pressurization is automatically stopped for pressure maintaining, the valve starts to open and close, the life test starts, and the opening and closing frequency of the valve is arbitrarily set according to the requirements of the test method; 6) when any index of key performance parameters such as leakage quantity, inlet and outlet pressure, structural stress, hand wheel moment and the like of the electric stop valve exceeds a specified range (failure criterion or failure threshold), representing valve failure, and recording the pressure stress and fatigue life of the electric stop valve; 7) collecting life test data (environmental stress level and fatigue life or opening and closing times of the electric stop valve under the stress level) and providing basic data for evaluating the reliability life of the high-pressure valve in the later period; 8) and after the test is finished, the acquisition, storage and control system automatically releases pressure and stops, and after the pressure is released, the protection window is opened to take out the product to finish the test.
The present invention is not limited to the above-mentioned examples, and various modifications and changes which can be made by those skilled in the art without creative efforts are protected by the patent within the scope defined by the claims of the present invention.
Claims (7)
1. The utility model provides a high-pressure valve life test device, includes high pressure simulation container, the interior pressure output system of valve, valve external pressure output system, signal acquisition, storage and control system and gas-liquid pipeline, its characterized in that: an electrically driven valve to be tested is placed in the high-pressure simulation container, and a torque sensor is arranged between the valve to be tested and the electric driving head and used for measuring the opening and closing moment of the valve; a valve body of the measured valve is provided with a strain gauge for measuring the structural deformation of the valve; the tested valve is connected with the valve internal pressure output system and is used for simulating the internal pressure load on the inner wall of the valve body in the opening and closing process of the tested valve; the high-pressure simulation container is connected with the valve external pressure output system and is used for simulating the external pressure load of the outer wall of the tested valve under the condition of deep sea high-pressure environment; the pressure transmitter in the valve external pressure output system is used for respectively controlling and realizing the automatic opening and closing of the electrically-driven valve to be measured, so that the pressure load of the electrically-driven valve to be measured is automatically pressurized and decompressed according to requirements, the internal pressure load, the external pressure load and the internal and external simultaneous pressure loads are applied to the electrically-driven valve to be measured, and the fatigue life test of the electrically-driven valve to be measured under the action of the dynamic pressure load is realized.
2. The high pressure valve life test apparatus of claim 1, wherein: the valve internal pressure output system consists of a pressure transmitter, a throttle valve, a liquid booster pump, an air source electromagnetic valve, an air source pressure gauge, an air source regulating valve, a pneumatic water injection pump, a manual pressure relief valve and a pneumatic pressure relief valve, wherein the liquid inlet end of the tested valve is connected with the pressure transmitter through a hydraulic pipeline, the liquid tank is connected with the pneumatic water injection pump through a filter and the liquid booster pump in the back, and the air inlet end of the liquid booster pump is connected with a compressed air inlet through the air source electromagnetic valve, the air source regulating valve, the air source ball valve and the filter; the air inlet end of the pneumatic water injection pump is connected with a compressed air inlet through an air source electromagnetic valve, an air source ball valve and a filter; the other path is connected with a liquid tank through a manual pressure relief valve; the liquid outlet end of the valve to be measured is connected with a pressure transmitter through a hydraulic pipeline, and the pressure transmitter is connected with a liquid tank through a throttle valve.
3. The high pressure valve life test apparatus of claim 1, wherein: the valve external pressure output system is composed of a pressure transmitter, a safety valve, a pneumatic water injection valve, a liquid booster pump, an air source electromagnetic valve, an air source pressure gauge and an air source adjusting valve, wherein the liquid inlet end of the liquid booster pump is connected with a liquid tank through a filter, the liquid outlet end of the liquid booster pump is connected with the inside of a high-pressure simulation container through the pressure transmitter and the safety valve, the inside of the high-pressure simulation container is connected with the liquid tank through the pneumatic water injection valve, and the air inlet end of the liquid booster pump is connected with a compressed air inlet through the air source.
4. The high pressure valve life test apparatus of claim 1, wherein: the collection, storage and control system is composed of a touch screen, a PLC (programmable logic controller), an acquisition module and a storage module, the PLC is respectively connected with the touch screen, the storage module and the acquisition module, the storage module is used for realizing long-time automatic preprocessing and storage of measurement data and is connected with a printer and used for printing a test report on the measurement data through the printer.
5. The high pressure valve life test apparatus of claim 4, wherein: and the PLC is internally provided with an alarm module for alarming the pressure abnormity of the inlet and outlet of the valve to be tested, alarming the pressure abnormity of the high-pressure simulation container, alarming the abnormity of the origin pressure gauge and alarming the abnormal opening and closing moment of the valve to be tested.
6. The high pressure valve life test apparatus of claim 1, wherein: the high-pressure simulation container comprises a cylinder body and an end cover, wherein a pressure relief hole is reserved at the bottom of the cylinder body and used for discharging liquid in the container after a test is finished; the side part of the cylinder body is of an arc structure, a pressure pressurization pipeline interface and five through holes are arranged on the end cover, and the five through holes are respectively used for connecting a valve internal pressure input pipeline, a valve internal pressure output pipeline, a valve external pressure input pipeline, a valve external pressure output pipeline and the connection between the valve and an electric driving head thereof.
7. The high pressure valve life test apparatus of claim 6, wherein: and the pressure relief hole at the bottom of the high-pressure simulation container is connected with the water receiving tank through a manual drain valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020436268.0U CN212007792U (en) | 2020-03-30 | 2020-03-30 | High-pressure valve life test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020436268.0U CN212007792U (en) | 2020-03-30 | 2020-03-30 | High-pressure valve life test device |
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| CN212007792U true CN212007792U (en) | 2020-11-24 |
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| CN202020436268.0U Active CN212007792U (en) | 2020-03-30 | 2020-03-30 | High-pressure valve life test device |
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