CN112697599A - Valve pressure resistance testing device - Google Patents
Valve pressure resistance testing device Download PDFInfo
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- CN112697599A CN112697599A CN202011418098.4A CN202011418098A CN112697599A CN 112697599 A CN112697599 A CN 112697599A CN 202011418098 A CN202011418098 A CN 202011418098A CN 112697599 A CN112697599 A CN 112697599A
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- pressure
- valve
- pressure regulating
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- regulating cylinder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0611—Hydraulic or pneumatic indicating, recording or sensing means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Abstract
The invention discloses a valve pressure resistance testing device, which belongs to valve testing and comprises a rack, wherein the bottom of the inner side of the rack is fixedly connected with a first pressure regulating cylinder, the upper end part of the circumferential surface of the outer side of the first pressure regulating cylinder is fixedly connected with a first supporting table, and the upper end surface of the first supporting table is provided with a first sealing ring. According to the invention, the hydraulic limit values and the air pressure limit values of two ports of the air pump, the liquid pump, the refrigerator, the first hydraulic cylinder, the second hydraulic cylinder, the electric push rod, the first pressure gauge, the second pressure gauge, the first pressure relief valve, the second pressure relief valve, the first pressure regulating cylinder and the second pressure regulating cylinder are mutually matched, so that the pressure measuring efficiency is higher, the applicability is wider, the pressure resistance tests of different types of valve main bodies are facilitated, and the first hydraulic cylinder or the second hydraulic cylinder is used as a pressure regulating element in the pressure resistance testing process.
Description
Technical Field
The invention belongs to the technical field of valve testing, and particularly relates to a valve pressure resistance testing device.
Background
The valve is a control part in a fluid conveying system, has the functions of stopping, regulating, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like, is used for the valve of the fluid control system, and has quite a plurality of varieties and specifications from the simplest stop valve to various valves used in an extremely complicated automatic control system.
In the using process of the valve, the valve is often used for controlling the on-off of a high-pressure liquid path or a high-pressure gas path, and has higher requirements on the pressure resistance of the valve, so that the valve needs to be tested by using a related testing device before being sold, however, the existing pressure resistance testing device for the valve still has certain defects in the operation process, cannot obtain the air pressure resistance limiting value and the hydraulic pressure resistance limiting value of two ports of the valve at one time under different temperature environments, has low pressure testing efficiency, needs to use different testing equipment when carrying out an air pressure resistance testing experiment and a hydraulic pressure resistance experiment, has lower applicability, and mostly directly uses an air pump and a liquid pump to provide pressure values in the past when carrying out a hydraulic pressure or air pressure resistance test, because the air pump and the liquid pump are unstable in the pressurizing process, the increment amount in unit time is easy to generate variables, therefore, a valve pressure resistance testing device is needed to solve the above problems.
Disclosure of Invention
The invention aims to: the pressure resistance testing device for the valve is provided for solving the problems that the existing pressure resistance testing device for the valve still has certain defects in the operation process, the air pressure resistance limiting value and the hydraulic pressure resistance limiting value of two ports of the valve cannot be obtained at one time under different temperature environments, the pressure measuring efficiency is low, different testing equipment is required to be used when an air pressure resistance testing experiment and a hydraulic pressure resistance experiment are carried out, the applicability is low, and in the hydraulic or air pressure resistance testing process, an air pump and a liquid pump are mostly used for providing pressure values directly in the past, and because the air pump and the liquid pump are unstable in the pressurizing process, variables are easy to appear in the increment of unit time, the accuracy of a testing result is low.
In order to achieve the purpose, the invention adopts the following technical scheme:
a valve pressure resistance testing device comprises a rack, wherein a first pressure regulating cylinder is fixedly connected to the bottom of the inner side of the rack, a first supporting table is fixedly connected to the upper end of the circumferential surface of the outer side of the first pressure regulating cylinder, a first sealing ring is arranged on the upper end surface of the first supporting table, a second sealing ring is arranged above the first sealing ring, a same valve main body is arranged between the second sealing ring and the first sealing ring, the upper end surface of the second sealing ring is arranged on the lower end surface of the second supporting table, the second supporting table is fixedly connected to the lower end of the circumferential surface of the outer side of the second pressure regulating cylinder, a connecting seat is fixedly connected to the upper end surface of the second pressure regulating cylinder, the upper end surface of the connecting seat is fixedly connected with the top of the inner side of the rack through an electric push rod, and a first connecting air pipe is clamped on the circumferential surface of the outer circle of the first pressure, one end, far away from a first pressure regulating cylinder, of the first connecting air pipe is communicated with an air outlet of the air pump, the surface of the first connecting air pipe is communicated with the outer side circumferential surface of a second pressure regulating cylinder through a second connecting air pipe, a first connecting liquid pipe is clamped on the outer side circumferential surface of the first pressure regulating cylinder, one end, far away from the first pressure regulating cylinder, of the first connecting liquid pipe is communicated with a water outlet of the liquid pump, the surface of the first connecting liquid pipe is communicated with the outer side circumferential surface of the second pressure regulating cylinder through the second connecting liquid pipe, and a refrigerator is arranged on the inner side wall of the rack.
As a further description of the above technical solution:
the air inlet of the air pump is communicated with one end, close to the third connecting air pipe, of the air pump body, the bottom of the air pump body is fixedly connected with the bottom of the inner side of the rack through the shock absorption seat, the liquid inlet of the liquid pump is communicated with one end, close to the third connecting liquid pipe, of the liquid pump body, and the bottom of the liquid pump body is fixedly connected with the bottom of the inner side of the rack through the shock absorption seat.
As a further description of the above technical solution:
the first connecting air pipe is provided with a first air pipe valve, the first air pipe valve is positioned between the first pressure regulating cylinder and the second connecting air pipe, the first connecting air pipe is provided with a first pressure gauge, and the first pressure gauge is positioned between the first air pipe valve and the first pressure regulating cylinder.
As a further description of the above technical solution:
the surface of the second connecting air pipe is provided with a second air pipe valve, the second air pipe valve is positioned between the first connecting air pipe and the second pressure regulating cylinder, the surface of the second connecting air pipe is provided with a second pressure gauge, and the second pressure gauge is positioned between the second air pipe valve and the second pressure regulating cylinder.
As a further description of the above technical solution:
the first pressure regulating tube is connected with the first liquid pipe valve, the first pressure regulating tube is connected with the second liquid pipe valve, the first pressure regulating tube is connected with the first pressure reducing tube in a clamping mode, the first pressure reducing tube is located between the first pressure regulating tube and the first liquid pipe valve, and the second pressure reducing tube is provided with a first pressure reducing valve.
As a further description of the above technical solution:
the second is connected and is provided with second liquid pipe valve on the liquid pipe to second liquid pipe valve is located between second pressure regulating section of thick bamboo and the first liquid pipe of being connected, the joint has the second pressure release pipe on the liquid pipe is connected to the second, the second relief valve is located between second pressure regulating section of thick bamboo and second liquid pipe valve, be provided with the second relief valve on the second pressure release pipe.
As a further description of the above technical solution:
the inside sliding connection of a first pressure regulating section of thick bamboo has first piston, first piston is located the below of first connecting air pipe and first connecting liquid pipe port, the lower terminal surface of first piston passes through first pneumatic cylinder and the inboard lower terminal surface fixed connection of a first pressure regulating section of thick bamboo.
As a further description of the above technical solution:
the inside sliding connection of second pressure regulating section of thick bamboo has the second piston, the second piston is located the second and connects the top of trachea and second connection liquid pipe port, the up end of second piston passes through second pneumatic cylinder and the inboard up end fixed connection of second pressure regulating section of thick bamboo.
As a further description of the above technical solution:
the side of frame is provided with transparent heat preservation cover, the side edge of transparent heat preservation cover side is along articulated with the side edge of the close one side of frame through the hinge to the surface of transparent heat preservation cover is provided with the thermometer.
As a further description of the above technical solution:
the input end of the first hydraulic cylinder is electrically connected with the output end of the first switch through a wire, the input end of the second hydraulic cylinder is electrically connected with the output end of the second switch through a wire, the input end of the air pump is electrically connected with the output end of the third switch through a wire, the input end of the liquid pump is electrically connected with the output end of the fourth switch through a wire, the input end of the electric push rod is electrically connected with the output end of the fifth switch through a wire, the input end of the refrigerator is electrically connected with the output end of the sixth switch through a wire, the input ends of the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch are electrically connected with the output end of the power supply through wires, and the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch are all arranged on the surface of the transparent heat-preserving cover, the power supply is arranged at the top of the rack.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, under the condition that the valve main body is fixed once through the mutual matching of the designed air pump, the liquid pump, the refrigerator, the first hydraulic cylinder, the second hydraulic cylinder, the electric push rod, the first pressure gauge, the second pressure gauge, the first pressure relief valve, the second pressure relief valve, the first pressure regulating cylinder and the second pressure regulating cylinder, the valve main body can be finished in different temperature environments once, the hydraulic limit values and the air pressure limit values of two ports of the valve main body are obtained, the pressure measuring efficiency is higher, the applicability is wider, the pressure resistance test on different types of valve main bodies is facilitated, in the process of testing the pressure resistance, the first hydraulic cylinder or the second hydraulic cylinder is used as a pressure regulating original element, and compared with the air pump and the liquid pump, the obtained limit value data is more accurate.
2. In the invention, through the designed first sealing ring and the second sealing ring, the first sealing ring and the second sealing ring are used for increasing the sealing performance of the connecting parts of the first supporting platform and the second supporting platform and the valve main body, and can play a certain buffering effect to avoid the second supporting platform from moving downwards under the driving of the electric push rod, the position of the valve main body deviates due to the overlarge instant stress, and through the designed electric push rod, when the valve body to be tested is tested, the valve body is firstly placed at the position of the upper end surface of the first sealing ring, which corresponds to the port of the first pressure regulating cylinder, and then the fifth switch is operated to enable the electric push rod to do stretching action, in the process, the second pressure regulating cylinder slowly descends until the second sealing ring is contacted with the valve main body and generates a certain amount of deformation, and then the positioning and fixing of the valve main body can be completed.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a valve pressure resistance testing device according to the present invention;
fig. 2 is an enlarged schematic structural diagram of a valve pressure resistance testing device B according to the present invention;
fig. 3 is an enlarged schematic structural diagram of a valve pressure resistance testing device a according to the present invention;
fig. 4 is a schematic cross-sectional structural view of a second pressure regulating cylinder of the valve pressure resistance testing apparatus according to the present invention in a front view;
fig. 5 is a schematic cross-sectional view of a first pressure regulating cylinder of the valve pressure resistance testing apparatus according to the present invention.
Illustration of the drawings:
1. a frame; 2. a first pressure regulating cylinder; 3. a first piston; 4. a first hydraulic cylinder; 5. a first support table; 6. a first seal ring; 7. a valve body; 8. a second seal ring; 9. a second support table; 10. a second pressure regulating cylinder; 11. a second piston; 12. a second hydraulic cylinder; 13. a connecting seat; 14. an electric push rod; 15. a first connecting air pipe; 16. a first gas tube valve; 17. a first pressure gauge; 18. a second connecting air pipe; 19. an air pump; 20. a third connecting air pipe; 21. a second pressure gauge; 22. a second air pipe valve; 23. a first connecting liquid pipe; 24. a first liquid pipe valve; 25. a second connection liquid pipe; 26. a first pressure relief tube; 27. A first pressure relief valve; 28. a liquid pump; 29. a third connecting liquid pipe; 30. a second liquid tube valve; 31. a second pressure relief tube; 32. A second pressure relief valve; 33. a refrigerator; 34. a transparent heat-insulating cover; 35. a first switch; 36. a second switch; 37. a third switch; 38. a fourth switch; 39. a fifth switch; 40. a thermometer; 41. a sixth switch; 42. a power source.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a valve pressure resistance testing device comprises a frame 1, a first pressure regulating cylinder 2 is fixedly connected at the bottom of the inner side of the frame 1, a first supporting table 5 is fixedly connected at the upper end part of the circumferential surface of the outer side of the first pressure regulating cylinder 2, a first sealing ring 6 is arranged at the upper end surface of the first supporting table 5, a second sealing ring 8 is arranged above the first sealing ring 6, the first sealing ring 6 and the second sealing ring 8 are designed to increase the sealing performance of the connecting parts of the first supporting table 5 and the second supporting table 9 and a valve main body 7, and can play a certain buffering effect, so that the situation that the second supporting table 9 is driven by an electric push rod 14 to descend is avoided, the valve main body 7 is deviated due to overlarge instant stress, and the same valve main body 7 is arranged between the second sealing ring 8 and the first sealing ring 6, the upper end face of the second sealing ring 8 is arranged on the lower end face of the second supporting table 9, the second supporting table 9 is fixedly connected with the lower end part of the outer circumferential face of the second pressure regulating cylinder 10, the upper end face of the second pressure regulating cylinder 10 is fixedly connected with the connecting seat 13, the upper end face of the connecting seat 13 is fixedly connected with the top part of the inner side of the frame 1 through the electric push rod 14, when the valve main body 7 to be tested is tested, the valve main body 7 is firstly placed at the position, corresponding to the port of the first pressure regulating cylinder 2, of the upper end face of the first sealing ring 6, then the fifth switch 39 is operated to enable the electric push rod 14 to do stretching action, in the process, the second pressure regulating cylinder 10 slowly descends until the second sealing ring 8 is in contact with the valve main body 7 and generates a certain amount of deformation, the positioning and fixing of the valve main body 7 can be completed, the first connecting air pipe 15 is clamped on the outer circumferential face of, one end of the first connecting air pipe 15 far away from the first pressure regulating cylinder 2 is communicated with an air outlet of an air pump 19, the surface of the first connecting air pipe 15 is communicated with the outer circumferential surface of the second pressure regulating cylinder 10 through a second connecting air pipe 18, a first connecting liquid pipe 23 is clamped on the outer circumferential surface of the first pressure regulating cylinder 2, one end of the first connecting liquid pipe 23 far away from the first pressure regulating cylinder 2 is communicated with a water outlet of a liquid pump 28, the surface of the first connecting liquid pipe 23 is communicated with the outer circumferential surface of the second pressure regulating cylinder 10 through a second connecting liquid pipe 25, and a refrigerator 33 is arranged on the inner side wall of the rack 1.
Specifically, as shown in fig. 1, an air inlet of the air pump 19 is communicated with one end of the third connecting air pipe 20, the bottom of the body of the air pump 19 is fixedly connected with the bottom of the inner side of the frame 1 through a shock absorption seat, a liquid inlet of the liquid pump 28 is communicated with one end of the third connecting liquid pipe 29, and the bottom of the body of the liquid pump 28 is fixedly connected with the bottom of the inner side of the frame 1 through the shock absorption seat.
Specifically, as shown in fig. 3, a first air pipe valve 16 is disposed on the first connecting air pipe 15, the first air pipe valve 16 is located between the first pressure regulating cylinder 2 and the second connecting air pipe 18, a first pressure gauge 17 is disposed on the first connecting air pipe 15, the first pressure gauge 17 is located between the first air pipe valve 16 and the first pressure regulating cylinder 2, a gas pressure test is performed through the designed first air pipe valve 16, the first pressure gauge 17, the air pump 19, the second pressure gauge 21 and the first piston 3, the first air pipe valve 16 is opened, the third switch 37 is operated to operate the air pump 19, the air pump 19 can supplement gas into the first pressure regulating cylinder 2 through the first connecting air pipe 15 during operation, during this process, the first pressure gauge 17 can read a gas pressure variation value inside the first pressure regulating cylinder 2, and transmit the obtained data to the computer, and the computer draws a broken line statistical chart, after a period of time, the third switch 37 is operated again to stop the operation of the air pump 19, the first switch 35 is operated to extend the first hydraulic cylinder 4, so that the first piston 3 moves towards the valve main body 7, in the process, the first pressure gauge 17 and the second pressure gauge 21 record the change of the air pressure values in the first pressure regulating cylinder 2 and the second pressure regulating cylinder 10 respectively, and when the metering value of the second pressure gauge 21 changes, the metering value of the first pressure gauge 17 is the limit value of the air pressure resistance of the valve main body 7 close to the first sealing ring 6.
Specifically, as shown in fig. 2, a second air pipe valve 22 is disposed on a surface of the second connecting air pipe 18, the second air pipe valve 22 is located between the first connecting air pipe 15 and the second pressure regulating cylinder 10, a second pressure gauge 21 is disposed on a surface of the second connecting air pipe 18, the second pressure gauge 21 is located between the second air pipe valve 22 and the second pressure regulating cylinder 10, and the air pump 19 can supplement air into the second pressure regulating cylinder 10 through the first connecting air pipe 15 and the second connecting air pipe 18 during the operation process by the second air pipe valve 22, the second pressure gauge 21, the second hydraulic cylinder 12 and the first pressure gauge 17, during which the second pressure gauge 21 can read the air pressure change value inside the second pressure regulating cylinder 10 and transmit the obtained data to the computer, the computer draws a polyline statistical graph, and after a period of time, the third switch 37 is operated again to stop the operation of the air pump 19, the second switch 36 is operated to extend the second hydraulic cylinder 12, so that the second piston 11 moves towards the valve body 7, in the process, the first pressure gauge 17 and the second pressure gauge 21 record the change of the air pressure value inside the first pressure regulating cylinder 2 and the second pressure regulating cylinder 10 respectively, and when the metering value of the first pressure gauge 17 changes, the metering value of the second pressure gauge 21 is the limit value of the gas pressure-resistant capacity of the valve body 7 close to the second sealing ring 8 side.
Specifically, as shown in fig. 3, a first liquid pipe valve 24 is disposed on the first connecting liquid pipe 23, the first liquid pipe valve 24 is located between the first pressure regulating cylinder 2 and the second connecting liquid pipe 25, a first pressure relief pipe 26 is connected to the first connecting liquid pipe 23 in a clamping manner, the first pressure relief pipe 26 is located between the first pressure regulating cylinder 2 and the first liquid pipe valve 24, a first pressure relief valve 27 is disposed on the second pressure relief pipe 31, the fourth switch 38 is operated to operate the liquid pump 28 through the first liquid pipe valve 24, the first connecting liquid pipe 23, the first pressure gauge 17 and the second pressure gauge 21, the liquid pump 28 can inject liquid into the first pressure regulating cylinder 2 through the first connecting liquid pipe 23 during operation, during this process, the first pressure gauge 17 can read a hydraulic pressure variation value inside the first pressure regulating cylinder 2 and transmit the obtained data to the computer, and drawing a broken line statistical chart by a computer, after a period of time, operating the fourth switch 38 again to stop the operation of the liquid pump 28, operating the first switch 35 to make the first hydraulic cylinder 4 perform extension action, and making the first piston 3 move towards the direction of the valve main body 7, wherein in the process, the first pressure gauge 17 and the second pressure gauge 21 respectively record the change of the hydraulic pressure values in the first pressure regulating cylinder 2 and the second pressure regulating cylinder 10, and when the metering value of the second pressure gauge 21 changes, the metering value of the first pressure gauge 17 is the limit value of the liquid pressure resistance of the valve main body 7 close to the first sealing ring 6 side.
Specifically, as shown in fig. 2, a second liquid pipe valve 30 is disposed on the second connection liquid pipe 25, the second liquid pipe valve 30 is located between the second pressure regulating cylinder 10 and the first connection liquid pipe 23, a second pressure relief pipe 31 is connected to the second connection liquid pipe 25 in a clamping manner, a second pressure relief valve 32 is located between the second pressure regulating cylinder 10 and the second liquid pipe valve 30, a second pressure relief valve 32 is disposed on the second pressure relief pipe 31, the second liquid pipe valve 30 is opened and the first liquid pipe valve 24 is closed through the first pressure gauge 17, the second pressure gauge 21, the liquid pump 28, the second hydraulic cylinder 12, the first liquid pipe valve 24 and the second liquid pipe valve 30, the fourth switch 38 is operated to operate the liquid pump 28, and the liquid pump 28 can inject liquid into the second pressure regulating cylinder 10 through the first connection liquid pipe 23 and the second connection liquid pipe 25 during the operation, in this process, the second pressure gauge 21 can read the hydraulic pressure change value inside the second pressure regulating cylinder 10, and transmit the obtained data to the computer, and draw a broken line statistical chart by the computer, after a period of time, operate the fourth switch 38 again to stop the operation of the liquid pump 28, operate the second switch 36 to make the second hydraulic cylinder 12 perform the extension action, and make the second piston 11 move towards the valve main body 7, in this process, the first pressure gauge 17 and the second pressure gauge 21 record the change of the hydraulic pressure inside the first pressure regulating cylinder 2 and the second pressure regulating cylinder 10, when the metering value of the first pressure gauge 17 changes, the metering value of the second pressure gauge 21 is the limit value of the pressure-resisting capacity of the liquid on the other side of the valve main body 7.
Specifically, as shown in fig. 5, a first piston 3 is slidably connected to the inside of the first pressure-regulating cylinder 2, the first piston 3 is located below the ports of the first connection gas pipe 15 and the first connection liquid pipe 23, and the lower end surface of the first piston 3 is fixedly connected to the inner lower end surface of the first pressure-regulating cylinder 2 through a first hydraulic cylinder 4.
Specifically, as shown in fig. 4, a second piston 11 is slidably connected to the inside of the second pressure-regulating cylinder 10, the second piston 11 is located above the ports of the second connection air pipe 18 and the second connection liquid pipe 25, and the upper end surface of the second piston 11 is fixedly connected to the inner upper end surface of the second pressure-regulating cylinder 10 through a second hydraulic cylinder 12.
Specifically, as shown in fig. 1, a transparent heat-insulating cover 34 is disposed on a side surface of the rack 1, a side edge of the side surface of the transparent heat-insulating cover 34 is hinged to a side edge of a side surface close to the rack 1 through a hinge, and a thermometer 40 is disposed on a surface of the transparent heat-insulating cover 34.
Specifically, as shown in fig. 1, the input end of the first hydraulic cylinder 4 is electrically connected to the output end of the first switch 35 through a conducting wire, the input end of the second hydraulic cylinder 12 is electrically connected to the output end of the second switch 36 through a conducting wire, the input end of the air pump 19 is electrically connected to the output end of the third switch 37 through a conducting wire, the input end of the liquid pump 28 is electrically connected to the output end of the fourth switch 38 through a conducting wire, the input end of the electric push rod 14 is electrically connected to the output end of the fifth switch 39 through a conducting wire, the input end of the refrigerator 33 is electrically connected to the output end of the sixth switch 41 through a conducting wire, the input ends of the first switch 35, the second switch 36, the third switch 37, the fourth switch 38, the fifth switch 39 and the sixth switch 41 are electrically connected to the output end of the power source 42 through conducting wires, the first switch, the second switch 36, the third switch 37, the fourth switch 38, the, a power supply 42 is provided at the top of the housing 1.
The working principle is as follows: when the valve body 7 to be tested is used for testing, the valve body 7 is firstly placed at the position, corresponding to the port of the first pressure regulating cylinder 2, of the upper end surface of the first sealing ring 6, then the fifth switch 39 is operated to enable the electric push rod 14 to do stretching action, in the process, the second pressure regulating cylinder 10 slowly descends until the second sealing ring 8 contacts with the valve body 7 and generates a certain amount of deformation, in a normal temperature environment, the gas pressure is firstly tested, the first gas pipe valve 16 is opened, the third switch 37 is operated to enable the air pump 19 to operate, the air pump 19 can supplement gas into the first pressure regulating cylinder 2 through the first connecting gas pipe 15 in the working process, in the process, the first pressure gauge 17 can read the gas pressure change value in the first pressure regulating cylinder 2, the obtained data is transmitted to the computer, and the computer draws a broken line statistical chart, after a period of time, operating the third switch 37 again to stop the operation of the air pump 19, operating the first switch 35 to extend the first hydraulic cylinder 4 to move the first piston 3 toward the valve body 7, during which the first pressure gauge 17 and the second pressure gauge 21 record the change of the air pressure inside the first pressure regulating cylinder 2 and the second pressure regulating cylinder 10, respectively, when the measured value of the second pressure gauge 21 changes, the measured value of the first pressure gauge 17 is the limit value of the gas pressure resistance of the valve body 7 side, opening the first pressure relief valve 27 and the second pressure relief valve 32 until the gauge needles of the first pressure gauge 17 and the second pressure gauge 21 are reset and then closed, opening the second air valve 22 and closing the first air valve 16, operating the third switch 37 to operate the air pump 19, and supplementing the air pump 19 with gas into the second pressure regulating cylinder 10 through the first connecting air pipe 15 and the second connecting air pipe 18 during the operation, in the process, the second pressure gauge 21 can read the air pressure change value in the second pressure regulating cylinder 10, and transmit the obtained data to the computer, and draw a broken line statistical chart by the computer, after a period of time, the third switch 37 is operated again to stop the operation of the air pump 19, the second switch 36 is operated to make the second hydraulic cylinder 12 do stretching action, and the second piston 11 moves towards the valve main body 7, in the process, the first pressure gauge 17 and the second pressure gauge 21 respectively record the change of the air pressure value in the first pressure regulating cylinder 2 and the second pressure regulating cylinder 10, when the metering value of the first pressure gauge 17 changes, the metering value of the second pressure gauge 21 is the limit value of the air pressure resistance capacity at the other side of the valve main body 7, under the normal temperature environment, the liquid pressure test is carried out, the first liquid pipe valve 24 is opened, and the fourth switch 38 is operated to make the liquid pump 28 operate, in the process that the liquid pump 28 works, the first pressure gauge 17 can read the hydraulic pressure change value in the first pressure regulating cylinder 2 and transmit the obtained data to the computer, the computer draws a broken line statistical chart, after a period of time, the fourth switch 38 is operated again to stop the operation of the liquid pump 28, the first switch 35 is operated to make the first hydraulic cylinder 4 extend to make the first piston 3 move towards the valve main body 7, in the process, the first pressure gauge 17 and the second pressure gauge 21 respectively record the change of the hydraulic pressure value in the first pressure regulating cylinder 2 and the second pressure regulating cylinder 10, when the metering value of the second pressure gauge 21 changes, the metering value of the limiting value of the first pressure gauge 17 is the pressure resistance of the liquid at one side of the valve main body 7, opening the first pressure relief valve 27 and the second pressure relief valve 32 until the needles of the first pressure gauge 17 and the second pressure gauge 21 are reset and then closed, opening the second liquid pipe valve 30 and closing the first liquid pipe valve 24, operating the fourth switch 38 to operate the liquid pump 28, wherein the liquid pump 28 can inject liquid into the second pressure regulating cylinder 10 through the first connecting liquid pipe 23 and the second connecting liquid pipe 25 in the working process, in the process, the second pressure gauge 21 can read the hydraulic change value inside the second pressure regulating cylinder 10 and transmit the obtained data to the computer, drawing a broken line statistical chart by the computer, after a period of time, operating the fourth switch 38 again to stop the liquid pump 28, operating the second switch 36 to extend the second hydraulic cylinder 12 to move the second piston 11 towards the valve main body 7, in the process, the first pressure gauge 17 and the second pressure gauge 21 respectively record the hydraulic values inside the first pressure regulating cylinder 2 and the second pressure regulating cylinder 10 When the measurement value of the first pressure gauge 17 is changed, the measurement value of the second pressure gauge 21 is the limit value of the pressure resistance of the liquid at the other side of the valve body 7, the transparent heat-insulating cover 34 is closed, the sixth switch 41 is operated to control the refrigerator 33 to operate, the refrigerator 33 is a semiconductor refrigerator 33, therefore, the refrigerator 33 can raise or lower the temperature value in the space body enclosed by the frame 1 and the transparent heat-insulating cover 34 in the working process, different limit values can be obtained by repeating the pressure measurement process by changing the temperature value in the space body enclosed by the frame 1 and the transparent heat-insulating cover 34, and under the condition that the valve body 7 is fixed once, the valve body 7 can be in different temperature environments at one time, so that the hydraulic limit values and the air pressure limit values of two ports of the valve body can be obtained, the pressure measurement efficiency is higher, the applicability is wider, be convenient for carry out withstand voltage nature test to the valve main part 7 of different grade type, and be regarded as the pressure regulating original paper by first pneumatic cylinder 4 or second pneumatic cylinder 12 at the in-process of testing withstand voltage nature, compare in that air pump 19 and liquid pump 28 are more stable for the limit value data that obtain are more accurate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention with equivalent alternatives or modifications within the scope of the present invention.
Claims (10)
1. A valve pressure resistance testing device comprises a rack (1) and is characterized in that a first pressure regulating cylinder (2) is fixedly connected to the inner bottom of the rack (1), a first supporting table (5) is fixedly connected to the upper end of the outer circumferential surface of the first pressure regulating cylinder (2), a first sealing ring (6) is arranged on the upper end surface of the first supporting table (5), a second sealing ring (8) is arranged above the first sealing ring (6), a same valve main body (7) is arranged between the second sealing ring (8) and the first sealing ring (6), the upper end surface of the second sealing ring (8) is arranged on the lower end surface of a second supporting table (9), the second supporting table (9) is fixedly connected to the lower end of the outer circumferential surface of the second pressure regulating cylinder (10), and a connecting seat (13) is fixedly connected to the upper end surface of the second pressure regulating cylinder (10), the upper end face of the connecting seat (13) is fixedly connected with the top of the inner side of the rack (1) through an electric push rod (14), a first connecting air pipe (15) is clamped on the outer circumferential face of the first pressure regulating cylinder (2), one end, far away from the first pressure regulating cylinder (2), of the first connecting air pipe (15) is communicated with an air outlet of an air pump (19), the surface of the first connecting air pipe (15) is communicated with the outer circumferential face of the second pressure regulating cylinder (10) through a second connecting air pipe (18), a first connecting liquid pipe (23) is clamped on the outer circumferential face of the first pressure regulating cylinder (2), one end, far away from the first pressure regulating cylinder (2), of the first connecting liquid pipe (23) is communicated with a water outlet of a liquid pump (28), the surface of the first connecting liquid pipe (23) is communicated with the outer circumferential face of the second pressure regulating cylinder (10) through a second connecting liquid pipe (25), and a refrigerator (33) is arranged on the inner side wall of the frame (1).
2. The device for testing the pressure resistance of the valve according to claim 1, wherein an air inlet of the air pump (19) is communicated with one end of the air pump body close to the third connecting air pipe (20), the bottom of the air pump body (19) is fixedly connected with the bottom of the inner side of the rack (1) through a shock absorption seat, a liquid inlet of the liquid pump (28) is communicated with one end of the air pump body close to the third connecting liquid pipe (29), and the bottom of the air pump body (28) is fixedly connected with the bottom of the inner side of the rack (1) through the shock absorption seat.
3. The device for testing the pressure resistance of the valve according to claim 1, wherein the first connecting air pipe (15) is provided with a first air pipe valve (16), the first air pipe valve (16) is located between the first pressure regulating cylinder (2) and the second connecting air pipe (18), the first connecting air pipe (15) is provided with a first pressure gauge (17), and the first pressure gauge (17) is located between the first air pipe valve (16) and the first pressure regulating cylinder (2).
4. The valve pressure resistance testing device according to claim 1, wherein a second air pipe valve (22) is arranged on the surface of the second connecting air pipe (18), the second air pipe valve (22) is located between the first connecting air pipe (15) and the second pressure regulating cylinder (10), a second pressure gauge (21) is arranged on the surface of the second connecting air pipe (18), and the second pressure gauge (21) is located between the second air pipe valve (22) and the second pressure regulating cylinder (10).
5. The device for testing the pressure resistance of the valve according to claim 1, wherein a first liquid pipe valve (24) is arranged on the first connecting liquid pipe (23), the first liquid pipe valve (24) is located between the first pressure regulating cylinder (2) and the second connecting liquid pipe (25), a first pressure relief pipe (26) is clamped on the first connecting liquid pipe (23), the first pressure relief pipe (26) is located between the first pressure regulating cylinder (2) and the first liquid pipe valve (24), and a first pressure relief valve (27) is arranged on the second pressure relief pipe (31).
6. The device for testing the pressure resistance of the valve according to claim 1, wherein a second liquid pipe valve (30) is arranged on the second connecting liquid pipe (25), the second liquid pipe valve (30) is located between the second pressure regulating cylinder (10) and the first connecting liquid pipe (23), a second pressure relief pipe (31) is clamped on the second connecting liquid pipe (25), the second pressure relief valve (32) is located between the second pressure regulating cylinder (10) and the second liquid pipe valve (30), and a second pressure relief valve (32) is arranged on the second pressure relief pipe (31).
7. The valve pressure resistance testing device according to claim 2, wherein a first piston (3) is slidably connected inside the first pressure regulating cylinder (2), the first piston (3) is located below the ports of the first connecting air pipe (15) and the first connecting liquid pipe (23), and the lower end surface of the first piston (3) is fixedly connected with the lower end surface of the inner side of the first pressure regulating cylinder (2) through a first hydraulic cylinder (4).
8. The valve pressure resistance testing device according to claim 7, wherein a second piston (11) is slidably connected inside the second pressure regulating cylinder (10), the second piston (11) is located above the ports of the second connecting air pipe (18) and the second connecting liquid pipe (25), and the upper end face of the second piston (11) is fixedly connected with the upper end face of the inner side of the second pressure regulating cylinder (10) through a second hydraulic cylinder (12).
9. The device for testing the pressure resistance of the valve according to claim 8, wherein a transparent heat-insulating cover (34) is arranged on the side surface of the rack (1), the side edge of the side surface of the transparent heat-insulating cover (34) is hinged to the side edge of the side surface close to the rack (1) through a hinge, and a thermometer (40) is arranged on the surface of the transparent heat-insulating cover (34).
10. The valve pressure resistance testing device according to claim 9, wherein the input end of the first hydraulic cylinder (4) is electrically connected with the output end of a first switch (35) through a conducting wire, the input end of the second hydraulic cylinder (12) is electrically connected with the output end of a second switch (36) through a conducting wire, the input end of the air pump (19) is electrically connected with the output end of a third switch (37) through a conducting wire, the input end of the liquid pump (28) is electrically connected with the output end of a fourth switch (38) through a conducting wire, the input end of the electric push rod (14) is electrically connected with the output end of a fifth switch (39) through a conducting wire, the input end of the refrigerator (33) is electrically connected with the output end of a sixth switch (41) through a conducting wire, and the first switch (35), the second switch (36), the third switch (37), the fourth switch (38) and the output end of the fifth switch (39) are electrically connected, The input ends of a fifth switch (39) and a sixth switch (41) are electrically connected with the output end of a power supply (42) through conducting wires, the first switch, the second switch (36), the third switch (37), the fourth switch (38), the fifth switch (39) and the sixth switch (41) are all arranged on the surface of the transparent heat-preservation cover (34), and the power supply (42) is arranged on the top of the rack (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418098.4A CN112697599A (en) | 2020-12-07 | 2020-12-07 | Valve pressure resistance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011418098.4A CN112697599A (en) | 2020-12-07 | 2020-12-07 | Valve pressure resistance testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112697599A true CN112697599A (en) | 2021-04-23 |
Family
ID=75506769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011418098.4A Withdrawn CN112697599A (en) | 2020-12-07 | 2020-12-07 | Valve pressure resistance testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112697599A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418788A (en) * | 2021-05-07 | 2021-09-21 | 宁波金晟芯影像技术有限公司 | Mobile camera lens pressure measuring device |
-
2020
- 2020-12-07 CN CN202011418098.4A patent/CN112697599A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418788A (en) * | 2021-05-07 | 2021-09-21 | 宁波金晟芯影像技术有限公司 | Mobile camera lens pressure measuring device |
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Application publication date: 20210423 |
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