Valve sealing performance detection device and method

Abstract

The invention discloses a valve sealing performance detection device and method, and belongs to the technical field of valve detection. A valve sealing performance detection device comprises a working box fixedly connected with a water tank, and further comprises a bottom clamping disc arranged on the water tank in a lifting mode, a top plate is arranged on the top of the water tank through a connecting rod, a top clamping disc is connected to the top plate in a lifting mode, and the two clamping discs are symmetrically arranged. A sealing gasket with an opening in the middle is arranged on the disc face of the clamping disc, and a pressurization detection mechanism is arranged in the opening. When the spiral plate rotates in the water tank, the working end of the fluid fluctuation mechanism forms fluctuation or vortex in the water body; on one hand, liquid in the water tank can be subjected to rotary flowing and eddy current effects, so that small bubbles formed in the water tank are effectively eliminated, the accuracy of valve body air pressure detection is ensured, and on the other hand, impurities in the water body in the water tank can be filtered to prevent the impurities in the water body from influencing the definition generated when the bubbles are observed.

Description

Technical Field

[0001] The present invention relates to the technical field of valve detection, and in particular to a valve sealing performance detection device and method. Background Art

[0002] Oilfield exploitation usually involves a complex environment of high pressure. Under this condition, the pipeline valves that transport oil need to maintain good sealing to prevent oil leakage. These leaks may lead to safety accidents such as explosions, fires, and even cause lasting pollution to the environment. Therefore, before use and installation, the valves need to be tested for sealing. This is the first barrier in the oil transportation project and plays a vital role in the entire project.

[0003] In the prior art, the immersion method is usually used to test valves. The valve to be tested is completely closed and immersed in water. Usually a water tank or sink that can completely submerge the valve is selected, and a certain air pressure is applied to one end of the valve, usually air or inert gas (such as helium) to increase the internal pressure. When a leak occurs, it can be visually seen.

[0004] However, most of the valves tested are irregular in shape, and the surface of the valves will carry a lot of impurities. After multiple valve tests, a large amount of impurities will remain in the water body, which will affect the clarity of observing the bubble generation. In the process of valve placement, the valve will drive the gas to sink into the water tank to form bubbles. Once many small bubbles and impurities are generated in the water tank, it may make it difficult to judge the leakage. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that a large amount of impurities will remain in the water body, which will affect the clarity of observing bubble generation and lead to misjudgment, and to propose a valve sealing performance detection device and method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A valve sealing performance detection device comprises a working box, to which a water tank is fixedly connected, and further comprises: a bottom clamping plate, which is lifted and arranged on the water tank, wherein a top plate is provided on the top of the water tank through a connecting rod, and a top clamping plate is lifted and connected on the top plate, two sets of clamping plates are symmetrically arranged, and a sealing gasket with an opening in the middle is provided on the plate surface of the clamping plate, and a pressurization detection mechanism is provided in the opening; a transmission rod, which is rotatably connected to the side wall of the water tank, wherein the transmission rod extends into the water tank and is fixedly connected to a spiral plate, and a pressure detection mechanism is provided in the water tank There is a fluid fluctuation mechanism, when the spiral plate rotates inside the water tank, the working end of the fluid fluctuation mechanism forms waves or vortices in the water body; a circulating liquid storage tank, fixedly connected to the working tank cavity, wherein a water purification filter mechanism is arranged in the working tank cavity, the input end of the water purification filter mechanism is connected with the water tank through a pipeline, and the output end of the water purification filter mechanism is connected with the circulating liquid storage tank through a pipeline, the circulating liquid storage tank is provided with a drain pipe, and the drain pipe extends into the water tank cavity, when the water purification filter mechanism is started, the spiral plate rotates inside the water tank.

[0007] In order to facilitate the stirring of the water in the water tank to form waves or vortices, preferably, the fluid fluctuation mechanism includes a first connecting rod and a second connecting rod which are respectively rotatably connected to the water tank, and both sets of connecting rods are provided with paddles, an auxiliary gear is fixedly connected to the first connecting rod, and a main gear is fixedly connected to the second connecting rod, the auxiliary gear is meshed with the main gear, and the paddle cooperates with the spiral plate.

[0008] In order to facilitate the lifting and lowering movement of the rack, a guide cylinder is further provided on the side wall of the working box, and a guide rod is slidably connected to the guide cylinder, a piston is provided at one end of the guide rod, and the piston is fitted with the inner wall of the guide cylinder, and the other end of the guide rod extends to the outside and is fixedly connected with a rack, and the rack is meshed with a main gear, a booster cylinder is fixedly connected to the top plate, a booster rod is slidably connected to the booster cylinder, one end of the booster rod is fixedly connected to the piston, and the piston is fitted with the inner wall of the booster cylinder, and the other end of the booster rod is fixedly connected to the top clamping disk, and the booster cylinder is connected to the guide cylinder through a telescopic tube.

[0009] In order to facilitate adjustment of the position of the guide cylinder, preferably, a third telescopic member is fixedly connected to the side wall of the working box, and an output end of the third telescopic member is fixedly connected to a mounting plate, and the guide cylinder is fixedly connected to the mounting plate.

[0010] In order to facilitate the rotation of the transmission rod, preferably, the transmission rod is transmission-connected to the second connecting rod via a first connecting pulley, and when the second connecting rod rotates, the transmission rod rotates synchronously.

[0011] In order to facilitate filtering of impurities in the water tank, preferably, the water purification filter mechanism includes a filter box fixedly connected to the working box, a filter screen is fixedly connected to the filter box, a screw rod is rotatably connected to the filter box, a movable block is threadedly connected to the screw rod, a scraper is provided at the bottom of the movable block, and the tip of the scraper is abutted against the top of the filter screen, the water inlet end of the filter box is connected to the water tank, and the water outlet end of the filter box is connected to the circulating liquid storage tank.

[0012] In order to facilitate the rotation of the transmission shaft, further, a transmission disc is fixedly connected in the working box, and a transmission shaft is rotatably connected to the transmission disc. A turbine blade is fixedly connected to the outer wall of the transmission shaft, and the turbine blade is arranged in the transmission disc. One side of the transmission disc is connected to the water tank through a liquid inlet pipe, and a control valve is arranged on the liquid inlet pipe. The other side of the transmission disc is connected to the filter box through a liquid outlet pipe, and the transmission shaft is transmission-connected to the screw rod and the first connecting rod through a second connecting pulley and a third connecting pulley respectively.

[0013] In order to facilitate the pressurized transportation of the water in the water tank, preferably, a water pump is fixedly connected to the working box, and the liquid outlet pipe on the transmission disk is connected to the input end of the water pump, and the output end of the water pump is connected to the top of the filter box through a pipe, and the pipe is arranged above the filtering surface of the filter screen.

[0014] In order to facilitate secondary purification of the water after the initial filtration, preferably, a purification box is provided on the top of the circulating liquid storage tank, and a first purification layer and a second purification layer are respectively provided in the purification box. The filter box is connected to the purification box through a pipeline, and the purification box is connected to the circulating liquid storage tank through an extension pipe, and a one-way valve is provided on the extension pipe.

[0015] A valve sealing performance detection method, the operating steps are as follows: Step 1: Clamp and fix the two-channel valve of the valve body to be tested by two sets of clamping discs; Step 2: Move the valve body to be tested into the water tank until the outside of the valve body is completely immersed in water, and increase the pressure in the valve body channel through the pressure-boosting detection mechanism; Step 3: The spiral plate rotates inside the water tank, and the working end of the fluid wave mechanism forms waves or vortices in the water body; Step 4: After the test is completed, the turbid water in the water tank is circulated and filtered through the water purification filter mechanism before use.

[0016] Compared with the prior art, the present invention provides a valve sealing performance detection device and method, which has the following beneficial effects: 1. The valve sealing performance testing device can make the liquid in the water tank produce a rotating flow and eddy current effect through the paddles in opposite directions. The generated eddy current will cause the water in the water tank to fluctuate, thereby causing the bubbles in the water to rise to the surface of the water tank, making it easier for the bubbles in the water to be discharged from the water. The reverse movement of the paddle will form a rotating eddy current and fluctuation in the water. This flow pattern helps to break the static area of ​​the water, thereby effectively removing the small bubbles formed in the water tank and ensuring the accuracy of the valve body air pressure detection. 2. The valve sealing performance detection device resets the rack, which drives the main gear to rotate again, so that the main gear drives the second connecting rod to rotate, and then the water in the water tank undergoes secondary fluctuations or eddies, so that the operator can observe the impurities in the water tank more intuitively, which is crucial for timely discovery and treatment of problems, and can effectively prevent excessive accumulation of impurities in the water; 3. The valve sealing performance testing device can filter impurities in the water in the water tank through the water purification filter mechanism, and transport the filtered liquid to the circulating liquid storage tank, and then the circulating liquid storage tank transports the purified liquid to the water tank for repeated use, so as to prevent impurities in the water body from affecting the clarity when observing bubbles; 4. The valve sealing performance detection device rotates the transmission shaft in the transmission disk, and then the transmission shaft drives the screw rod and the first connecting rod to rotate through the second connecting pulley and the third connecting pulley, so that the screw rod rotates, and then drives the movable block to move back and forth against the inner wall of the filter box, and then drives the scraper to scrape the impurities on the filter screen, and the first connecting rod will drive the paddle to rotate in the water body, causing the water body to fluctuate or generate eddy currents to stir the impurities. The formed eddy currents and fluctuations can not only enhance the dynamics of the water body in the water tank, but also disperse the impurities, thereby improving the filtration efficiency of the subsequent filter box.

[0017] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. On the one hand, the present invention can produce a rotating flow and eddy current effect on the liquid in the water tank. The generated eddy current will cause the water in the water tank to fluctuate. This flow pattern helps to break the static area of ​​the water body, thereby effectively removing the small bubbles formed in the water tank and ensuring the accuracy of the valve body air pressure detection. On the other hand, the impurities in the water in the water tank can be filtered, and the filtered liquid can be transported to a circulating liquid storage tank, and the circulating liquid storage tank can then transport the purified liquid to the water tank for repeated use to prevent the impurities in the water body from affecting the clarity produced when observing the bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the isometric structure of a valve sealing performance detection device proposed by the present invention Figure 1 ; Figure 2A schematic diagram of the isometric structure of a valve sealing performance detection device proposed by the present invention Figure 2 ; Figure 3 A schematic diagram of a cutaway view of a working box of a valve sealing performance testing device proposed by the present invention; Figure 4 This is a schematic structural diagram of a top clamping plate of a valve sealing performance testing device proposed by the present invention; Figure 5 A schematic diagram of the cross-section of a valve sealing performance detection device proposed by the present invention Figure 1 ; Figure 6 A schematic diagram of the cross-section of a valve sealing performance detection device proposed by the present invention Figure 2 ; Figure 7 A partial structural schematic diagram of a valve sealing performance detection device proposed by the present invention; Figure 8 This is a schematic diagram of the interior of a purification box of a valve sealing performance detection device proposed by the present invention.

[0019] In the figure: 1, working box; 2, water tank; 3, top plate; 4, first telescopic member; 5, bottom clamping plate; 6, second telescopic member; 7, top clamping plate; 8, first connecting rod; 9, second connecting rod; 10, paddle; 11, transmission rod; 12, spiral plate; 13, auxiliary gear; 14, main gear; 15, first connecting pulley; 16, rack; 17, third telescopic member; 18, mounting plate; 19, guide cylinder; 20, Guide rod; 21. Booster cylinder; 22. Booster rod; 23. Telescopic tube; 24. Water pump; 25. Filter box; 26. Filter screen; 27. Screw rod; 28. Movable block; 29. ​​Scraper; 30. Second connecting pulley; 31. Transmission plate; 32. Transmission shaft; 33. Turbine blade; 34. Third connecting pulley; 35. Circulating liquid storage tank; 36. Purification tank; 37. First purification layer; 38. Second purification layer; 39. Drain pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Example: Reference Figure 1-Figure 8 A valve sealing performance detection device comprises a working box 1, to which a water tank 2 is fixedly connected, and the water tank 2 can be filled with water for visually detecting the sealing performance of the valve. A first telescopic member 4 is also fixedly connected in the cavity of the working box 1, and a bottom clamping disk 5 is fixedly connected at the output end of the first telescopic member 4, and the bottom clamping disk 5 is arranged in the water tank 2. The bottom clamping disk 5 can be driven to move up and down in the water tank 2 by the first telescopic member 4, and a top plate 3 is also arranged on the top of the water tank 2 through a connecting rod, and a second telescopic member 6 is also fixedly connected to the top plate 3, and a top clamping disk 7 is also fixedly connected to the output end of the second telescopic member 6, and sealing pads with openings in the middle are arranged on the disk surfaces of the two sets of clamping disks, and a boost detection mechanism is arranged in the opening.

[0023] The boost detection mechanism mainly includes a boost air pump and an air pressure detection sensor. The boost air pump can be an electric air pump or a pneumatic air pump, which is used to inject gas or inert gas (such as helium) into the internal channel of the valve. The gas delivery pipeline is set in the opening to increase the internal air pressure for water immersion detection. The air pressure detection sensor can be a pressure sensor, a pressure switch, a pressure transmitter, etc., which can monitor the air pressure inside the valve in real time, output a corresponding electrical signal, and then detect the electrical signal through a control system. The control system is mainly used to control the start and stop of the boost air pump, and can also process the feedback signal of the sensor for data collection and analysis. Generally, a display screen is used to display the air pressure value and the set value in real time, so as to detect the air pressure inside the valve.

[0024] When water has been injected into the water tank 2, the bottom clamping plate 5 can be raised from the water body by the first telescopic member 4 so that it is above the water surface, and then the valve to be tested is placed on the sealing gasket on the plane of the bottom clamping plate 5, so that the first channel on the valve fits with the sealing gasket. At this time, the top clamping plate 7 is driven to descend by the second telescopic member 6, so that the sealing gasket on the top clamping plate 7 fits with the second channel on the valve, and then the switch of the second telescopic member 6 is started, and then the first telescopic member 4 is reset, so that the bottom clamping plate 5 and the top clamping plate 7 clamp the two groups of channels of the valve with each other, so that it is lowered into the water body of the water tank 2, and then the pressurized gas is delivered to the internal channel of the valve by the booster air pump. In this process, the valve button can be closed or opened, so that the air pressure of the opened valve (when the two groups of internal channels are connected) can be detected respectively, and the air pressure of the closed valve (when the two groups of internal channels are not connected) can also be detected.

[0025] In order to improve the clarity of the water body in the water tank 2 and prevent the clarity of the bubbles generated during observation from being affected, a transmission rod 11 is rotatably connected to the side wall of the water tank 2, and the transmission rod 11 extends into the water tank 2 and is fixedly connected to a spiral plate 12. A fluid fluctuation mechanism is provided in the water tank 2. When the spiral plate 12 rotates inside the water tank 2, the working end of the fluid fluctuation mechanism forms fluctuations or vortices in the water body.

[0026] The transmission rod 11 is connected to the second connecting rod 9 through the first connecting pulley 15. When the second connecting rod 9 rotates, the transmission rod 11 rotates synchronously. When the transmission rod 11 rotates, it can drive the spiral plate 12 to rotate synchronously, and then the spiral plate 12 drives the water in the water tank 2 to stir. At the same time, the working end of the fluid fluctuation mechanism forms waves or vortices in the water body. The spiral plate 12 is used in conjunction with the fluid fluctuation mechanism to stir the bubbles in the water tank 2.

[0027] Furthermore, the above-mentioned fluid fluctuation mechanism includes a first connecting rod 8 and a second connecting rod 9 which are respectively rotatably connected to the water tank 2, and both sets of connecting rods are provided with paddles 10, an auxiliary gear 13 is fixedly connected to the first connecting rod 8, and a main gear 14 is fixedly connected to the second connecting rod 9, the auxiliary gear 13 is meshed with the main gear 14, and the paddle 10 cooperates with the spiral plate 12.

[0028] When the second connecting rod 9 rotates counterclockwise, the main gear 14 rotates counterclockwise, thereby causing the auxiliary gear 13 to rotate clockwise, causing the auxiliary gear 13 to drive the first connecting rod 8 to rotate clockwise, thereby causing the paddles 10 on the first connecting rod 8 and the second connecting rod 9 to rotate in the water body in the opposite direction. The paddles 10 in the opposite direction can cause the liquid in the water tank 2 to produce a rotating flow and eddy effect. The generated eddy current will cause the water in the water tank 2 to fluctuate, thereby causing the bubbles in the water to rise to the surface of the water tank 2, making it easier for the bubbles in the water to be discharged from the water body. The reverse movement of the paddle 10 will form a rotating eddy current and fluctuation in the water body. This flow pattern helps to break the static area of ​​the water body. The reason is that during the placement of the valve, the valve will drive the gas to sink into the water tank 2 to form bubbles. Once many small bubbles and impurities are generated in the water tank 2, it may make it difficult to judge whether there is a leak, resulting in a misjudgment. The rotation of the paddle 10 can cause the water in the water tank 2 to fluctuate and eddy, thereby effectively eliminating the small bubbles formed in the water tank 2 and ensuring the accuracy of the valve body air pressure detection.

[0029] Reference Figure 4-Figure 7 In order to rotate the connecting rod, a guide cylinder 19 is provided on the side wall of the working box 1, and a guide rod 20 is slidably connected to the guide cylinder 19. A piston is provided at one end of the guide rod 20, and the piston is in contact with the inner wall of the guide cylinder 19. The other end of the guide rod 20 extends to the outside and is fixedly connected with a rack 16, which is meshed with the main gear 14. A booster cylinder 21 is fixedly connected to the top plate 3, and a booster rod 22 is slidably connected to the booster cylinder 21. One end of the booster rod 22 is fixedly connected to the piston, and the piston is in contact with the inner wall of the booster cylinder 21. The other end of the booster rod 22 is fixedly connected to the top clamping disk 7, and the booster cylinder 21 is connected to the guide cylinder 19 through a telescopic tube 23.

[0030] When the top clamping plate 7 drives the valve to move downward, it will simultaneously drive the guide rod 20 to move downward, so that the guide rod 20 drives the piston to move in contact with the inner wall of the guide cylinder 19, and then the gas in the guide cylinder 19 is transported to the boosting cylinder 21 through the telescopic tube 23, so that the inside of the boosting cylinder 21 is pressurized, and then the piston drives the boosting rod 22 to move upward, and then the boosting rod 22 drives the rack 16 to move upward, and then the rack 16 drives the main gear 14 to rotate, and then the main gear 14 drives the second connecting rod 9 to rotate.

[0031] When the bottom clamping plate 5 cooperates with the top clamping plate 7 to drive the valve to reset and move, the rack 16 can be reset through the above principle, and then the main gear 14 can be driven to rotate again, so that the main gear 14 drives the second connecting rod 9 to rotate, and then the water in the water tank 2 is subjected to secondary fluctuations or eddies, so that the operator can observe the impurities in the water tank 2 more intuitively, which is crucial for timely discovery and handling of problems, and can effectively prevent excessive accumulation of impurities in the water.

[0032] In order to facilitate the clean filtration of impurities in the water tank 2, a circulating liquid storage tank 35 is fixedly connected to the cavity of the working tank 1, and a water purification filter mechanism is arranged in the cavity of the working tank 1. The input end of the water purification filter mechanism is connected with the water tank 2 through a pipe, and the output end of the water purification filter mechanism is connected with the circulating liquid storage tank 35 through a pipe. A drain pipe 39 is arranged on the circulating liquid storage tank 35, and the drain pipe 39 extends into the cavity of the water tank 2. When the water purification filter mechanism is started, the spiral plate 12 can also rotate inside the water tank 2.

[0033] The impurities in the water in the water tank 2 can be filtered through the water purification filter mechanism, and the filtered liquid can be transported to the circulating liquid storage tank 35, and then the circulating liquid storage tank 35 can transport the purified liquid to the water tank 2 for repeated use, so as to prevent the impurities in the water from affecting the clarity when observing the bubbles.

[0034] During this process, the spiral plate 12 can cooperate with the fluid fluctuation mechanism to cause fluctuations or eddies in the water body in the water tank 2. In order to prevent the rack 16 from affecting the main gear 14, a third telescopic member 17 is fixedly connected to the side wall of the working box 1, and the output end of the third telescopic member 17 is fixedly connected to the mounting plate 18, and the guide cylinder 19 is fixedly connected to the mounting plate 18.

[0035] When it is necessary to start the water purification filtering mechanism, the switch of the third telescopic member 17 can be started, so that the third telescopic member 17 drives the guide cylinder 19 to move, thereby moving the rack 16 away from the main gear 14. At this time, the main gear 14 and the rack 16 are in a non-engaged state. Then the switch of the third telescopic member 17 is started again to move the rack 16 close to the main gear 14. At this time, the main gear 14 and the rack 16 are engaged.

[0036] Furthermore, the above-mentioned water purification filtering mechanism includes a filter box 25 fixedly connected to the working box 1, a filter screen 26 fixedly connected to the filter box 25, a screw rod 27 rotatably connected to the filter box 25, a movable block 28 threadedly connected to the screw rod 27, a scraper 29 is provided at the bottom of the movable block 28, and the tip of the scraper 29 is against the top of the filter screen 26, and the water inlet end of the filter box 25 is connected to the water tank 2 through a pipeline, and a control valve is provided on the pipeline for controlling the passage of the pipeline, and the water outlet end of the filter box 25 is connected to the circulating liquid storage tank 35.

[0037] When it is necessary to filter the impurities in the water tank 2, the passage of the pipeline can be activated by the control valve to transport the water in the water tank 2 to the filter box 25. At this time, the impurities in the water can be filtered by the filter screen 26, and the scraper 29 can move back and forth to scrape the residue on the filter screen 26 back and forth. The reciprocating movement of the scraper 29 helps to prevent the filter screen 26 from being blocked, ensuring smooth water flow, thereby improving the filtering efficiency.

[0038] In order to make the screw rod 27 and the first connecting rod 8 rotate synchronously, a transmission disk 31 is fixedly connected in the working box 1, and a transmission shaft 32 is rotatably connected to the transmission disk 31. A turbine blade 33 is fixedly connected to the outer wall of the transmission shaft 32, and the turbine blade 33 is arranged in the transmission disk 31. One side of the transmission disk 31 is connected to the water tank 2 through a liquid inlet pipe, and a control valve is arranged on the liquid inlet pipe. The other side of the transmission disk 31 is connected to the filter box 25 through a liquid outlet pipe, and the transmission shaft 32 is connected to the screw rod 27 and the first connecting rod 8 through a second connecting pulley 30 and a third connecting pulley 34 respectively.

[0039] In addition, a water pump 24 is fixedly connected in the working box 1, and the liquid outlet pipe on the transmission disk 31 is connected to the input end of the water pump 24, and the output end of the water pump 24 is connected to the top of the filter box 25 through a pipeline, and the pipeline is arranged above the filtering surface of the filter screen 26.

[0040] When the water pump 24 is started, the water source in the water tank 2 will be pressurized and transported to the filter box 25, and then the water source is transported to the transmission disc 31, rotating the turbine blade 33 in the transmission disc 31, and then the turbine blade 33 drives the transmission shaft 32 to rotate in the transmission disc 31, and then the transmission shaft 32 drives the screw rod 27 and the first connecting rod 8 to rotate through the second connecting pulley 30 and the third connecting pulley 34, so that the screw rod 27 rotates, and then drives the movable block 28 to move back and forth against the inner wall of the filter box 25, and then drives the scraper 29 to scrape impurities on the filter screen 26, and the first connecting rod 8 will drive the paddle 10 to rotate in the water body, causing the water body to fluctuate or generate vortexes to stir the impurities. The formed vortexes and fluctuations can not only enhance the dynamics of the water body in the water tank 2, but also disperse the impurities, thereby improving the filtration efficiency of the subsequent filter box 25.

[0041] In addition, a purification box 36 is arranged on the top of the circulating liquid storage tank 35, and a first purification layer 37 and a second purification layer 38 are respectively arranged in the purification box 36. The purification layers can use sand, activated carbon, membrane materials (such as ultrafiltration membrane, nanofiltration membrane) and polymer materials, etc., for secondary purification of the filtered water. The filter box 25 is connected with the purification box 36 through a pipeline, and the purification box 36 is connected with the circulating liquid storage tank 35 through an extension pipe, and a one-way valve is arranged on the extension pipe. A drain pipe 39 is arranged on the circulating liquid storage tank 35, and the drain pipe 39 extends into the cavity of the water tank 2. Clean water can be transported to the water tank 2 through the drain pipe 39, and when the clean water is transported to the inside of the water tank 2, it can be used in conjunction with a fluid fluctuation mechanism to make the liquid in the water tank 2 flow. In this process, the circulating liquid storage tank 35 is always in a sealed state, which can reduce the number of bubbles in the water body.

[0042] Reference Figure 1-Figure 8 , a valve sealing performance detection method, the operating steps are as follows: Step 1: Clamp and fix the two-channel valve of the valve body to be tested by two sets of clamping discs; Step 2: Move the valve body to be tested into the water tank 2 until the outside of the valve body is completely immersed in water, and increase the pressure in the valve body channel through the pressure-boosting detection mechanism; Step 3: The spiral plate 12 rotates inside the water tank 2, and the working end of the fluid wave mechanism forms waves or vortices in the water body; Step 4: After the detection is completed, the turbid water source in the water tank 2 is circulated and filtered through the water purification and filtering mechanism before use.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A valve sealing performance testing device, comprising a working box (1), to which a water tank (2) is fixedly connected, characterized in that: Also includes: The bottom clamping plate (5) is lifted and arranged on the water tank (2). The top of the water tank (2) is provided with a top plate (3) via a connecting rod, and a top clamping plate (7) is connected to the top plate (3) in a lifting manner, the two sets of clamping plates are symmetrically arranged, and a sealing gasket with an opening in the middle is arranged on the plate surface of the clamping plate, and a pressure increase detection mechanism is arranged in the opening; The transmission rod (11) is rotatably connected to the side wall of the water tank (2). The transmission rod (11) extends into the water tank (2) and is fixedly connected to a spiral plate (12); a fluid wave mechanism is provided in the water tank (2); when the spiral plate (12) rotates inside the water tank (2), a working end of the fluid wave mechanism forms waves or vortices in the water body; The circulating liquid storage tank (35) is fixedly connected to the cavity of the working box (1). A water purification filter mechanism is provided in the cavity of the working box (1); an input end of the water purification filter mechanism is connected to the water tank (2) via a pipeline, and an output end of the water purification filter mechanism is connected to the circulating liquid storage tank (35) via a pipeline; a liquid discharge pipe (39) is provided on the circulating liquid storage tank (35), and the liquid discharge pipe (39) extends into the cavity of the water tank (2); when the water purification filter mechanism is started, the spiral plate (12) rotates inside the water tank (2).

2. A valve sealing performance detection device according to claim 1, characterized in that: The fluid fluctuation mechanism comprises a first connecting rod (8) and a second connecting rod (9) which are respectively rotatably connected to the water tank (2), and both sets of connecting rods are provided with a paddle (10), the first connecting rod (8) is fixedly connected to an auxiliary gear (13), the second connecting rod (9) is fixedly connected to a main gear (14), the auxiliary gear (13) is meshed with the main gear (14), and the paddle (10) is matched with a spiral plate (12).

3. A valve sealing performance detection device according to claim 2, characterized in that: A guide cylinder (19) is provided on the side wall of the working box (1), and a guide rod (20) is slidably connected to the guide cylinder (19). A piston is provided at one end of the guide rod (20), and the piston is in contact with the inner wall of the guide cylinder (19). The other end of the guide rod (20) extends to the outside and is fixedly connected to a rack (16), and the rack (16) is meshed with the main gear (14). A booster cylinder (21) is fixedly connected to the top plate (3), and a booster rod (22) is slidably connected to the booster cylinder (21). One end of the booster rod (22) is fixedly connected to a piston, and the piston is in contact with the inner wall of the booster cylinder (21). The other end of the booster rod (22) is fixedly connected to the top clamping plate (7), and the booster cylinder (21) is connected to the guide cylinder (19) through a telescopic tube (23).

4. A valve sealing performance detection device according to claim 3, characterized in that: A third telescopic member (17) is fixedly connected to the side wall of the working box (1), and an output end of the third telescopic member (17) is fixedly connected to a mounting plate (18), and the guide cylinder (19) is fixedly connected to the mounting plate (18).

5. A valve sealing performance detection device according to claim 2, characterized in that: The transmission rod (11) is transmission-connected to the second connecting rod (9) via a first connecting pulley (15); when the second connecting rod (9) rotates, the transmission rod (11) rotates synchronously.

6. A valve sealing performance detection device according to claim 1, characterized in that: The water purification filtering mechanism comprises a filter box (25) fixedly connected to the working box (1), a filter screen (26) fixedly connected to the filter box (25), a screw rod (27) rotatably connected to the filter box (25), a movable block (28) threadedly connected to the screw rod (27), a scraper (29) provided at the bottom of the movable block (28), and a tip of the scraper (29) abutting against the top of the filter screen (26), a water inlet end of the filter box (25) being connected to the water tank (2), and a water outlet end of the filter box (25) being connected to the circulating liquid storage tank (35).

7. A valve sealing performance detection device according to claim 6, characterized in that: A transmission disc (31) is fixedly connected inside the working box (1), a transmission shaft (32) is rotatably connected to the transmission disc (31), a turbine blade (33) is fixedly connected to the outer wall of the transmission shaft (32), and the turbine blade (33) is arranged inside the transmission disc (31), one side of the transmission disc (31) is connected to the water tank (2) through a liquid inlet pipe, and a control valve is arranged on the liquid inlet pipe, the other side of the transmission disc (31) is connected to the filter box (25) through a liquid outlet pipe, and the transmission shaft (32) is transmission-connected to the screw rod (27) and the first connecting rod (8) through a second connecting pulley (30) and a third connecting pulley (34), respectively.

8. A valve sealing performance detection device according to claim 7, characterized in that: A water pump (24) is fixedly connected to the working box (1), and a liquid outlet pipe on the transmission plate (31) is connected to an input end of the water pump (24). The output end of the water pump (24) is connected to the top of the filter box (25) through a pipeline, and the pipeline is arranged above the filtering surface of the filter screen (26).

9. A valve sealing performance detection device according to claim 8, characterized in that: A purification box (36) is arranged on the top of the circulating liquid storage tank (35), and a first purification layer (37) and a second purification layer (38) are respectively arranged in the purification box (36). The filter box (25) is connected to the purification box (36) through a pipeline, and the purification box (36) is connected to the circulating liquid storage tank (35) through an extension pipe, and a one-way valve is arranged on the extension pipe.

10. A valve sealing performance detection method, comprising a valve sealing performance detection device according to any one of claims 1 to 9, characterized in that: The steps are as follows: Step 1: Clamp and fix the two-channel valve of the valve body to be tested by two sets of clamping discs; Step 2: driving the valve body to be tested to move into the water tank (2) until the outside of the valve body is completely immersed in water, and increasing the pressure in the valve body channel through the pressure-increasing testing mechanism; Step 3: The spiral plate (12) rotates inside the water tank (2), and the working end of the fluid wave mechanism forms waves or vortices in the water body; Step 4: After the test is completed, the turbid water in the water tank (2) is circulated and filtered through the water purification and filtering mechanism before use.

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