Performance testing device for high temperature and high pressure wear-resistant ball valve

Abstract

The present invention relates to the technical field of ball valves, and discloses a performance testing device for a high-temperature and high-pressure wear-resistant ball valve, comprising a high-temperature box, a booster pump, a translation cylinder, a clamping column and an extension rod, wherein the two translation cylinders are respectively located on both sides of the high-temperature box, and the translation cylinder translates along the depth direction of the high-temperature box, one end of the clamping column is sealed and slidably arranged in the translation cylinder, and the other end extends outward from the translation cylinder, the two clamping columns are respectively sealed and connected to the inlet and outlet ends of the ball valve, the extension rod is longitudinally slidably arranged on the top plate of the box body, and also comprises a pressurizing mechanism, and the pressurizing mechanism comprises two pressurizing channels and two sliding pipes. The present invention can solve or at least alleviate the problems that the existing ball valve high-temperature test device is difficult to install and position and difficult to ensure the accuracy of detection, and improve the effect of performance detection of high-temperature and high-pressure wear-resistant ball valves.

Description

Technical Field

[0001] The present invention relates to the technical field of ball valves, and in particular to a performance detection device for a high-temperature, high-pressure, and wear-resistant ball valve. Background Art

[0002] In specific use environments, wear-resistant ball valves need to work under high temperature and high pressure conditions. For example, the high temperature and high pressure wear-resistant ball valves used in the boiling bed (slurry bed) residue oil hydrotreating unit of the refinery have very harsh working conditions. Not only is the temperature as high as 455°C and the pressure level 42MPa, the medium is liquid, solid and gas three-phase, and the working temperature changes frequently, which puts high demands on the quality of the valve.

[0003] Most of the ball valve testing equipment on the market now uses large hydraulic semi-automatic valve testing machines, but this type of equipment can only test the performance of ball valves at room temperature and cannot test the performance of ball valves at high temperatures.

[0004] To this end, the Chinese patent with announcement number CN110806313A discloses a hot and cold alternating detection method for a high-temperature, high-pressure, wear-resistant ball valve. In its high-temperature detection step, it is disclosed that the high-temperature test is carried out on a special valve hot test device. The test device is mainly composed of three parts: the first part is the valve heating system, which consists of a high-temperature box heated by a resistance wire and a valve pushing mechanism; the second part is the pressure system, which consists of a gas cylinder group, a booster pump, a gas circuit switching box, a high-pressure pipeline, a bus, a pressure regulating device, etc.; the third part is the measurement and control system (which can be a PLC or a microcomputer), which consists of a sensing unit (which can be the thermal sensor mentioned above), an acquisition control unit, a control loop, a human-machine interface, etc.

[0005] However, the aforementioned patent requires removing the ball valve from the worm gear box and the electric head and placing them in a high-temperature chamber for heating. Torque testing requires connecting the ball valve's rotating stem via an extended valve stem. However, the ball valve needs to be placed in the middle of the high-temperature chamber during heating, making it difficult to accurately connect the extended valve stem to the ball valve's rotating stem. When testing sealing performance, the pressure inside the valve must rise to 30MPa±3MPa. The blind plates at both ends of the ball valve are subject to significant stress, making them prone to outward displacement or deformation. This makes it difficult to ensure sealing within the ball valve, impacting the accuracy of testing. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, solve or at least alleviate the problems of the existing high-temperature test device for ball valves being difficult to install and position and difficult to ensure detection accuracy, and provide a performance detection device for high-temperature, high-pressure, wear-resistant ball valves.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a performance testing device for a high-temperature, high-pressure, wear-resistant ball valve, comprising a high-temperature box and a booster pump, wherein the high-temperature box comprises a box body and a box cover, and the box body is a rectangular shell with an open front end. During testing, the ball valve with the electric head removed is placed in a testing position in the middle of the high-temperature box, and further comprises a translation cylinder, a clamping column and an extension rod. The two translation cylinders are respectively located on both sides of the high-temperature box, and the translation cylinder translates along the depth direction of the high-temperature box. One end of the clamping column is sealed and slidably arranged in the translation cylinder, and the other end extends outward from the translation cylinder. The two clamping columns are respectively sealed and connected to the inlet and outlet ends of the ball valve, and the extension rod is longitudinally extended. The cam is slidingly arranged on the top plate of the box body; it also includes a pressurizing mechanism, which includes two pressurizing channels and two sliding pipes. The pressurizing channels are located at the rear part of the bottom plate of the box body and are connected to the booster pump. The two pressurizing channels are respectively located on both sides of the box body and are respectively arranged corresponding to the two clamping columns. The two sliding pipes are respectively sealed and slidably arranged in the two pressurizing channels, and the two sliding pipes are respectively connected to the inlet and outlet ends of the ball valve; the booster pump is used to first drive the translation cylinder to translate from the opening of the high-temperature box to the middle of the side wall of the high-temperature box, and then drive the clamping column to extend outward from the translation cylinder, and then drive the extension rod to descend so that the lower end of the extension rod is sleeved on the upper end of the rotating rod of the ball valve, and finally the booster pump pressurizes the ball valve.

[0008] Preferably, it also includes a translation drive mechanism, which includes a translation channel and a translation rod. The four translation channels are respectively located in the front of the four corners of the longitudinal surface of the box body. The front end of the translation channel is connected to the booster pump. The translation rod is slidably arranged on the side wall of the box body along the depth direction of the box body, and the translation rods are two relatively mirror-imaged. The translation rod includes an upper rod, a lower rod and a connecting rod. The upper rod and the lower rod of the two translation rods are respectively sealed and slidably arranged in the four translation channels, and the connecting rods of the two translation rods are respectively connected to the two translation cylinders.

[0009] Preferably, a control pipeline is further included, wherein the control pipeline includes a drive pipe and a pressurizing pipe; the drive pipe includes a drive main pipe and four drive branch pipes, one end of the drive main pipe is connected to the booster pump, one end of the four drive branch pipes is respectively connected to the front end of the four translation channels, and the other ends of the four drive branch pipes are all connected to the end of the drive main pipe away from the booster pump, the drive main pipe is provided with a first one-way valve, the conduction direction of the first one-way valve is that the booster valve is conducted to the translation channel, and a drive valve and a first exhaust pipe are respectively provided before and after the first one-way valve, and the first The exhaust pipe is provided with a first exhaust valve; the pressurized pipe includes a pressurized main pipe and two pressurized branch pipes, one end of the pressurized main pipe is connected to the boosting pump, one end of the two pressurized branch pipes is respectively connected to the rear ends of the two pressurized channels, and the other ends of the two pressurized branch pipes are both connected to the end of the pressurized main pipe away from the boosting pump, and the two pressurized branch pipes are both provided with a second one-way valve, the conduction direction of the second one-way valve is that the boosting valve is connected to the pressurized channel, the pressurized valve and the second exhaust pipe are respectively provided before and after the first one-way valve, and the second exhaust pipe is provided with a second exhaust valve.

[0010] Preferably, it also includes a lifting drive mechanism, which includes a lifting sleeve, a lifting channel and a first connecting channel, the lifting sleeve is longitudinally slidably arranged on the top plate of the box body, and the two lifting channels are respectively located on both sides of the lifting sleeve and vertically arranged in the top plate of the box body, and lifting rods are provided on both sides of the lifting sleeve, the upper end of the lifting rod is sealed and slidably arranged in the lifting channel, and the lower end is fixedly connected to the lifting sleeve, the first connecting channel is located in the top plate of the box body and is two relatively mirror-imaged arrangements, one end of the first connecting channel is connected to the end of the translation channel located above one side of the box body, and the other end is connected to the upper end of the lifting channel, the extension rod is rotatably arranged in the lifting sleeve, and a tension spring is provided between the lifting sleeve and the box body, and the tension spring is used to drive the lifting sleeve to move upward.

[0011] Preferably, when the upper rod of the translation rod is located in the front part of the translation path, the connection between the translation path and the first connecting channel is in a closed state; when the translation rod moves to the end of the translation path, the connection between the translation path and the first connecting channel is in an open state, and the gas in the translation path enters the lifting path through the first connecting channel and drives the lifting sleeve to descend, so that the lower end of the extension rod is fitted on the upper end of the rotating rod of the ball valve.

[0012] Preferably, it also includes a centering drive mechanism, which includes a second connecting channel, which is located in the back plate of the box, and the two second connecting channels are respectively located on the left and right sides of the back plate of the box, one end of the second connecting channel is correspondingly arranged on the upper rod, and the other end of the second connecting channel is correspondingly arranged on the connecting rod; the upper rod and the connecting rod are both hollow structures, and when the translation rod moves to the end of the translation channel, the upper rod and the connecting rod are both sealed and connected to the second connecting channel, and the gas in the translation channel enters the translation cylinder through the upper rod, the second connecting channel and the connecting rod, so that the clamping column extends outward from the translation cylinder.

[0013] Preferably, an opening and closing mechanism is provided between the upper rod and the second connecting channel, and the opening and closing mechanism includes a fixed sealing plate and a rotating sealing plate, the fixed sealing plate is fixedly provided in the upper rod, and the rotating sealing plate is rotatably provided in the upper rod and is located on the side of the fixed sealing plate close to the second connecting channel, the fixed sealing plate and the rotating sealing plate are sealed and slidably fitted, and both the fixed sealing plate and the rotating sealing plate are provided with through holes; when the upper rod of the translation rod is located at the front part of the translation channel, the through holes of the fixed sealing plate and the through holes of the rotating sealing plate do not coincide with each other, and the gas in the translation channel drives the translation rod to move; when the translation rod moves to the end of the translation channel, the through holes of the fixed sealing plate and the through holes of the rotating sealing plate coincide with each other, and the gas in the translation channel enters the second connecting channel through the through holes of the fixed sealing plate and the through holes of the rotating sealing plate.

[0014] Preferably, the opening and closing mechanism also includes an opening and closing rod, which is fixed in the second connecting channel, the opening and closing rod and the rotating sealing plate are coaxially arranged, the end of the opening and closing rod faces the rotating sealing plate, and the rotating sealing plate is provided with an opening and closing hole at one end facing the opening and closing rod, the opening and closing hole is provided with an internal thread, and the opening and closing rod is provided with an external thread; when the translation rod moves to the end of the translation channel, the opening and closing rod is threadedly sleeved in the opening and closing hole of the rotating sealing plate, and the opening and closing rod drives the rotating sealing plate to rotate, so that the through hole of the fixed sealing plate coincides with the through hole of the rotating sealing plate.

[0015] Preferably, a torsion spring is provided between the fixed sealing plate and the rotating sealing plate, a first gear is provided on the side of the fixed sealing plate facing the rotating sealing plate, and a second gear is provided on the side of the rotating sealing plate, and the torsion spring drives the rotating sealing plate to rotate relative to the fixed sealing plate; when the opening and closing rod is not inserted into the opening and closing hole of the rotating sealing plate, the second gear rod abuts against the first gear rod, so that the through hole of the fixed sealing plate and the through hole of the rotating sealing plate remain in a non-overlapping state.

[0016] Preferably, a pressurizing chamber is provided in the clamping column, and the pressurizing chamber is connected to the ball valve through the end surface of the clamping column, and one end of the sliding tube close to the ball valve is connected to the pressurizing chamber of the clamping column through a hose.

[0017] The beneficial effects of the present invention are:

[0018] 1. This invention uses a booster pump to move a ball valve, mounted between two clamping columns, to the detection position. The booster pump then lowers an extension rod, the lower end of which connects to the ball valve's rotating rod. The booster pump then applies pressure to the ball valve. A single booster pump performs both positioning and pressurization, resulting in a simple power structure and wide applicability. The ball valve is installed at the housing opening for easy operation. Once installed, the ball valve and extension rod automatically position and connect.

[0019] 2. The present invention not only realizes automatic centering of the ball valve before reaching the detection position through the arrangement of the translation cylinder and the clamping column, but also applies a reverse force to the clamping column during pressurized testing, thereby avoiding displacement and deformation at the sealing points of the inlet and outlet ends of the ball valve, ensuring the sealing inside the ball valve, and further ensuring the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of the present invention with the box cover removed.

[0021] Figure 2 It is a structural cross-sectional view of the present invention.

[0022] Figure 3 For the present invention Figure 2 Cross-sectional view at AA in the middle.

[0023] Figure 4 For the present invention Figure 2 Cross-sectional view at the middle BB.

[0024] Figure 5 For the present invention Figure 2 Cross-sectional view at CC.

[0025] Figure 6 It is a cross-sectional view of the second connecting channel of the present invention.

[0026] Figure 7 For the present invention Figure 6 Enlarged view of point D in the middle.

[0027] Figure 8 This is a structural schematic diagram of the present invention without the high-temperature box.

[0028] Figure 9 It is a structural schematic diagram of the box body of the present invention.

[0029] Figure 10 It is a structural sectional view of the box body of the present invention.

[0030] Figure 11 For the present invention Figure 10 Cross-sectional view at EE.

[0031] Figure 12 For the present invention Figure 10 Cross-sectional view at FF in the middle.

[0032] Figure 13 For the present invention Figure 11 Cross-sectional view at GG in the middle.

[0033] Figure 14 Schematic diagram of the structure of the translation rod of the present invention.

[0034] Figure 15 It is a structural schematic diagram of the control pipeline of the present invention.

[0035] The accompanying drawings are marked as follows: 1-box; 2-translation cylinder; 3-clamping column; 4-extension rod; 5-translation rod; 6-lifting sleeve; 7-lifting rod; 8-tension spring; 9-fixed sealing plate; 10-rotating sealing plate; 11-opening and closing rod; 12-sliding pipe; 13-driving main pipe; 14-driving branch pipe; 15-first one-way valve; 16-driving valve; 17-first exhaust pipe; 18-first exhaust valve; 19-pressurization main pipe; 20-pressurization branch pipe; 21-second one-way valve; 22-pressurization valve; 23-second exhaust pipe; 24-second exhaust valve; 25-translation channel; 26-lifting channel; 27-first connecting channel; 28-second connecting channel; 29-pressurization channel; 30-boosting pump; 501-upper rod; 502-lower rod; 503-connecting rod. DETAILED DESCRIPTION

[0036] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0037] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] When the ball valve is undergoing performance testing in a high-temperature box, the extended valve stem is not easy to accurately connect to the rotating rod of the ball valve. In addition, when testing the sealing performance, the pressure inside the valve must rise to 30MPa±3MPa. The blind plates at both ends of the ball valve are subject to great force, and the blind plates are prone to outward displacement or deformation, making it difficult to ensure the sealing inside the ball valve, thus affecting the accuracy of the test.

[0040] Reference Figures 1 to 14 As shown, a performance testing device for a high-temperature, high-pressure, wear-resistant ball valve includes a high-temperature box and a booster pump 30. The high-temperature box includes a box body 1 and a box cover. The box body 1 is a rectangular shell with an open front end. During testing, the ball valve with the electric head removed is placed in the testing position in the middle of the high-temperature box. It also includes a translation cylinder 2, a clamping column 3 and an extension rod 4. The two translation cylinders 2 are respectively located on both sides of the high-temperature box. The translation cylinder 2 translates along the depth direction of the high-temperature box. One end of the clamping column 3 is sealed and slidably arranged in the translation cylinder 2, and the other end of the clamping column 3 extends outward from the translation cylinder 2 and is sealed and connected to the inlet or outlet end of the ball valve. The extension rod 4 is longitudinally slidably arranged on the top plate of the box body 1.

[0041] The booster pump 30 first drives the translation cylinder 2 to translate from the opening of the high-temperature box to the middle of the side wall of the high-temperature box, then drives the clamping column 3 to extend outward from the translation cylinder 2, and then drives the extension rod 4 to descend so that the lower end of the extension rod 4 is sleeved on the upper end of the rotating rod of the ball valve, and finally the booster pump 30 pressurizes the ball valve.

[0042] Reference Figure 4The performance detection device also includes a translation drive mechanism, which includes a translation channel 25 and a translation rod 5. The four translation channels 25 are respectively located at the front of the four corners of the longitudinal surface of the box body 1. The front end of the translation channel 25 is connected to the booster pump 30. The translation rod 5 is slidably arranged on the side wall of the box body 1 along the depth direction of the box body 1. The translation rod 5 is two relatively mirror-imaged. The translation rod 5 includes an upper rod 501, a lower rod 502 and a connecting rod 503. The upper rod 501 and the lower rod 502 of the two translation rods 5 are respectively sealed and slidably arranged in the four translation channels 25. The connecting rods 503 of the two translation rods 5 are respectively connected to the two translation cylinders 2.

[0043] When the upper rod 501 and the lower rod 502 are completely located in the translation path 25 , the translation cylinder 2 is located at the opening of the box 1 ; when the upper rod 501 and the lower rod 502 reach the back plate of the box 1 , the translation cylinder 2 is located at the detection position.

[0044] Reference Figure 2 The performance detection device also includes a lifting drive mechanism, which includes a lifting sleeve 6, a lifting channel 26 and a first connecting channel 27. The lifting sleeve 6 is longitudinally slidably arranged on the top plate of the box body 1. The two lifting channels 26 are respectively located on both sides of the lifting sleeve 6 and are vertically arranged in the top plate of the box body 1. Lifting rods 7 are provided on both sides of the lifting sleeve 6. The upper end of the lifting rod 7 is sealed and slidably arranged in the lifting channel 26, and the lower end is fixedly connected to the lifting sleeve 6. The first connecting channel 27 is located in the top plate of the box body 1 and is two relatively mirror-imaged. One end of the first connecting channel 27 is connected to the end of the translation channel 25 located above one side of the box body 1, and the other end is connected to the upper end of the lifting channel 26. The extension rod 4 is rotatably arranged in the lifting sleeve 6. A tension spring 8 is provided between the lifting sleeve 6 and the box body 1. The tension spring 8 drives the lifting sleeve 6 to move upward.

[0045] When the upper rod 501 of the translation rod 5 is located in the front part of the translation path 25, the connection between the translation path 25 and the first connecting channel 27 is in a closed state; when the translation rod 5 moves to the end of the translation path 25, the connection between the translation path 25 and the first connecting channel 27 is in an open state, and the gas in the translation path 25 enters the lifting path 26 through the first connecting channel 27 and drives the lifting sleeve 6 to descend, so that the lower end of the extension rod 4 is fitted on the upper end of the rotating rod of the ball valve.

[0046] Reference Figure 3 The performance detection device also includes a centering drive mechanism, which includes a second connecting channel 28. The second connecting channel 28 is located in the back plate of the box body 1. The two second connecting channels 28 are respectively located on the left and right sides of the back plate of the box body 1. One end of the second connecting channel 28 is correspondingly provided on the upper rod 501, and the other end of the second connecting channel 28 is correspondingly provided on the connecting rod 503.

[0047] The upper rod 501 and the connecting rod 503 are both hollow structures. When the translation rod 5 moves to the end of the translation channel 25, the upper rod 501 and the connecting rod 503 are sealed and connected to the second connecting channel 28. The gas in the translation channel 25 enters the translation cylinder 2 through the upper rod 501, the second connecting channel 28 and the connecting rod 503, causing the clamping column 3 to extend outward from the translation cylinder 2.

[0048] The two translation cylinders 2 are both pressurized by the booster pump 30 , the pressure in the two translation cylinders 2 is consistent, and the two clamping columns 3 extend the same amount, so that the ball valve installed between the two clamping columns 3 is located in the middle of the box body 1 .

[0049] The distance that the extension rod 4 descends is greater than the distance that the clamping column 3 is adjusted from the initial position to the center position, so the extension rod 4 is connected to the rotating rod of the ball valve after the ball valve reaches the detection position.

[0050] The booster pump 30 moves the ball valve, mounted between the two clamping columns 3, to the detection position. The booster pump 30 then lowers the extension rod 4, whose lower end connects to the ball valve's pivot rod. The booster pump 30 then applies pressure to the ball valve. A single booster pump 30 performs both positioning and pressurization, offering a simple power structure and wide applicability. The ball valve is installed at the opening of the housing 1 for easy operation. Once installed, the ball valve and extension rod 4 automatically position and connect.

[0051] The translation cylinder 2 and the clamping column 3 not only realize automatic centering of the ball valve before reaching the detection position, but also apply a reverse force to the clamping column 3 during the pressurized test to avoid displacement and deformation at the seals of the inlet and outlet ends of the ball valve, thereby ensuring the sealing inside the ball valve and thus ensuring the accuracy of the test.

[0052] Example 2

[0053] When the booster pump 30 in Example 1 drives the translation cylinder 2 to translate in the box body 1, if the upper rod 501 is always in the open state, the upper rod 501 cannot provide thrust for the translation cylinder 2, which is not conducive to ensuring the stability of the translation cylinder 2 during movement; if the upper rod 501 is always in the closed state, the gas in the upper rod 501 cannot enter the second connecting channel 28.

[0054] Reference Figure 7 and Figure 8 Therefore, an opening and closing mechanism is provided between the upper rod 501 and the second connecting channel 28. The opening and closing mechanism includes a fixed sealing plate 9 and a rotating sealing plate 10. The fixed sealing plate 9 is fixedly arranged in the upper rod 501, and the rotating sealing plate 10 is rotatably arranged in the upper rod 501 and is located on the side of the fixed sealing plate 9 close to the second connecting channel 28. The fixed sealing plate 9 and the rotating sealing plate 10 are sealed and slidably fitted, and both the fixed sealing plate 9 and the rotating sealing plate 10 are provided with through holes.

[0055] When the upper rod 501 of the translation rod 5 is located in the front part of the translation channel 25, the through hole of the fixed sealing plate 9 does not coincide with the through hole of the rotating sealing plate 10, and the gas in the translation channel 25 drives the translation rod 5 to move; when the translation rod 5 moves to the end of the translation channel 25, the through hole of the fixed sealing plate 9 coincides with the through hole of the rotating sealing plate 10, and the gas in the translation channel 25 enters the second connecting channel 28 through the through hole of the fixed sealing plate 9 and the through hole of the rotating sealing plate 10.

[0056] The opening and closing mechanism also includes an opening and closing rod 11, which is fixedly arranged in the second connecting channel 28. The opening and closing rod 11 is coaxially arranged with the rotating sealing plate 10, and the end of the opening and closing rod 11 faces the rotating sealing plate 10. The rotating sealing plate 10 is provided with an opening and closing hole on one end facing the opening and closing rod 11. The opening and closing hole is provided with an internal thread, and the opening and closing rod 11 is provided with an external thread.

[0057] When the translation rod 5 moves to the end of the translation path 25, the opening and closing rod 11 is threadedly sleeved into the opening and closing hole of the rotating sealing plate 10, and the opening and closing rod 11 drives the rotating sealing plate 10 to rotate, so that the through hole of the fixed sealing plate 9 coincides with the through hole of the rotating sealing plate 10.

[0058] A torsion spring is provided between the fixed sealing plate 9 and the rotating sealing plate 10. A first gear lever is provided on the side of the fixed sealing plate 9 facing the rotating sealing plate 10, and a second gear lever is provided on the side of the rotating sealing plate 10. The torsion spring drives the rotating sealing plate 10 to rotate relative to the fixed sealing plate 9.

[0059] When the opening and closing rod 11 is not inserted into the opening and closing hole of the rotating sealing plate 10, the second gear lever abuts against the first gear lever, so that the through hole of the fixed sealing plate 9 and the through hole of the rotating sealing plate 10 remain in a non-overlapping state.

[0060] Example 3

[0061] During the actual pressure test, it is necessary to apply pressure to the ball valve, and the ball valve needs to change its position from the installation position to the test position. When a hose is used for connection, the hose is easily dragged in the box 1. At the same time, after the test is completed, the ball valve cannot move outward to the opening of the box 1.

[0062] Reference Figure 5 The performance detection device also includes a pressurizing mechanism, which includes two pressurizing channels 29 and two sliding pipes 12. The pressurizing channel 29 is located at the rear of the bottom plate of the box body 1. The two pressurizing channels 29 are respectively located on both sides of the box body 1 and are respectively arranged corresponding to the two clamping columns 3. The two sliding pipes 12 are respectively sealed and slidably arranged in the two pressurizing channels 29. The two sliding pipes 12 are respectively connected to the inlet and outlet ends of the ball valve.

[0063] A pressurized chamber is provided in the clamp column 3 , and the pressurized chamber passes through the end surface of the clamp column 3 and is connected to the inlet or outlet end of the ball valve. The end of the sliding tube 12 close to the ball valve is connected to the pressurized chamber of the clamp column 3 through a hose.

[0064] When the ball valve moves from the opening of the box body 1 to the detection position, the pressure channel 29 and the booster pump 30 are closed, and the slide tube 12 moves in the box body 1 with the clamping column 3; during the pressurized detection, the pressure channel 29 and the booster pump 30 are connected. At this time, the thrust of the translation rod 5 and the thrust of the slide tube 12 offset each other, and the rotating rod of the ball valve has been connected to the lower end of the extension rod 4, which can ensure the position of the ball valve; after the detection is completed, the pressure relief speed of the translation channel 25 is greater than the pressure relief speed of the pressure channel 29, and the thrust of the slide tube 12 is greater than the thrust of the translation rod 5. At this time, the translation cylinder 2 drives the ball valve to move outward.

[0065] Example 4

[0066] Reference Figure 15 On the basis of the above embodiments, in order to make the four translation channels 25 intake air synchronously, ensure the synchronous translation of the two ball valves, and be able to pressurize the ball valve through the inlet or outlet end of the ball valve alone, so as to detect the leakage amount when the ball valve is closed, and also to better control the pressure relief time and pressure relief speed of the translation channel 25 and the pressurizing channel 29, the performance detection device also includes a control pipeline, which includes a drive pipe and a pressurizing pipe.

[0067] The drive pipe includes a drive main pipe 13 and four drive branch pipes 14. One end of the drive main pipe 13 is connected to the boost pump 30, and one end of the four drive branch pipes 14 is respectively connected to the front end of the four translation channels 25. The other ends of the four drive branch pipes 14 are all connected to the end of the drive main pipe 13 away from the boost pump 30. The drive main pipe 13 is provided with a first one-way valve 15. The conduction direction of the first one-way valve 15 is that the boost valve is conducted to the translation channel 25. A drive valve 16 and a first exhaust pipe 17 are respectively provided before and after the first one-way valve 15. The first exhaust pipe 17 is provided with a first exhaust valve 18.

[0068] The pressure pipe includes a pressure main pipe 19 and two pressure branches 20. One end of the pressure main pipe 19 is connected to the boosting pump 30, and one end of the two pressure branches 20 is connected to the rear ends of the two pressure channels 29 respectively. The other ends of the two pressure branches 20 are connected to the end of the pressure main pipe 19 away from the boosting pump 30. The two pressure branches 20 are both provided with a second one-way valve 21. The conduction direction of the second one-way valve 21 is that the boosting valve is connected to the pressure channel 29. The pressure valve 22 and the second exhaust pipe 23 are respectively provided before and after the first one-way valve 15, and the second exhaust pipe 23 is provided with a second exhaust valve 24.

[0069] Before the inspection, the translation cylinder 2 is located at the opening of the box body 1. After the ball valve is installed between the two clamping columns 3, the driving valve 16 is opened, and the booster pump 30 inputs gas into each translation channel 25. The translation rod 5 drives the translation cylinder 2 to move inward. When the translation cylinder 2 reaches the back plate of the box body 1, the upper rod 501 and the connecting rod 503 are both connected to the second connecting channel 28. The gas in the translation channel 25 enters the translation cylinder 2, and the clamping column 3 moves to put the ball valve in the inspection position. At the same time, the gas in the translation channel 25 enters the lifting channel 26 through the first connecting channel 27, and the lifting sleeve 6 descends together with the extension rod 4 until the lower end of the extension rod 4 is connected to the rotating rod of the ball valve.

[0070] During the test, first use a torque wrench to rotate the extension rod 4 to test the opening and closing torque of the valve in the no-load state. Through the speed ratio of the worm gear box and the mechanical transmission efficiency, the opening and closing torque of the valve at high temperature and no-load can be calculated. Then, a pressurized sealing test is carried out. An air pressure sensor is pre-installed in the pressurized chamber of the clamp column 3. The two pressurized valves 22 are opened to increase the pressure inside the valve to 30MPa±3MPa. Then, the two pressurized valves 22 are closed and the sealing performance is detected by the numerical changes of the air pressure sensor. Under the pressurized state, the extension rod 4 is rotated with a torque wrench to test the opening and closing torque of the valve in the loaded state. Finally, the ball valve is adjusted to the closed state, and the pressurized valve 22 on one of the pressurized branches 20 is opened. The leakage is detected by the numerical changes of the air pressure sensor in the clamp column 3 connected to the other pressurized branch 20.

[0071] After the test, the driving valve 16 and the pressurizing valve 22 are closed, and the first exhaust valve 18 is opened first. The lifting sleeve 6 is driven upward by the tension spring 8 to separate the extension rod 4 from the rotating rod of the ball valve, and then the second exhaust valve 24 is opened. The opening amount of the first exhaust valve 18 is greater than the opening amount of the second exhaust valve 24. At this time, the translation cylinder 2 drives the ball valve to move outward to the opening of the box body 1.

[0072] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A performance testing device for a high-temperature and high-pressure wear-resistant ball valve, comprising a high-temperature box and a booster pump (30), wherein the high-temperature box comprises a box body (1) and a box cover, wherein the box body (1) is a rectangular parallelepiped shell with an open front end, and wherein: It also includes a translation cylinder (2), a clamping column (3) and an extension rod (4), wherein the two translation cylinders (2) are respectively located on both sides of the high temperature box, the translation cylinder (2) translates along the depth direction of the high temperature box, one end of the clamping column (3) is sealed and slidably arranged in the translation cylinder (2), and the other end extends outward from the translation cylinder (2), the two clamping columns (3) are respectively sealed and connected to the inlet end and the outlet end of the ball valve, and the extension rod (4) is longitudinally slidably arranged on the top plate of the box body (1); It also includes a pressurizing mechanism, the pressurizing mechanism including two pressurizing channels (29) and two sliding pipes (12), the pressurizing channel (29) is located at the rear of the bottom plate of the box body (1) and is connected to the booster pump (30), the two pressurizing channels (29) are respectively located on both sides of the box body (1) and are respectively arranged corresponding to the two clamping columns (3), the two sliding pipes (12) are respectively sealed and slidably arranged in the two pressurizing channels (29), and the two sliding pipes (12) are respectively connected to the inlet end and the outlet end of the ball valve; The booster pump (30) is used to first drive the translation cylinder (2) to translate from the opening of the high-temperature box to the middle of the side wall of the high-temperature box, then drive the clamping column (3) to extend outward from the translation cylinder (2), and then drive the extension rod (4) to descend so that the lower end of the extension rod (4) is sleeved on the upper end of the rotating rod of the ball valve, and finally the booster pump (30) adds pressure to the ball valve.

2. The performance detection device for high temperature and high pressure wear-resistant ball valve according to claim 1 is characterized in that: The invention also comprises a translation driving mechanism, wherein the translation driving mechanism comprises a translation track (25) and a translation rod (5), wherein four translation tracks (25) are respectively located at the front of the four corners of the longitudinal surface of the box body (1), and the front end of the translation track (25) is connected to the booster pump (30), and the translation rod (5) is slidably arranged on the side wall of the box body (1) along the depth direction of the box body (1), and the translation rod (5) is two relatively mirror-image-arranged translation rods (5), and the translation rod (5) comprises an upper rod (501), a lower rod (502) and a connecting rod (503), and the upper rods (501) and the lower rods (502) of the two translation rods (5) are respectively sealed and slidably arranged in the four translation tracks (25), and the connecting rods (503) of the two translation rods (5) are respectively connected to the two translation cylinders (2).

3. The performance detection device for high temperature and high pressure wear-resistant ball valve according to claim 2 is characterized in that: Also included is a control pipeline, the control pipeline including a drive pipe and a pressurizing pipe; The driving pipe comprises a driving main pipe (13) and four driving branch pipes (14); one end of the driving main pipe (13) is connected to a booster pump (30); one end of the four driving branch pipes (14) are respectively connected to the front ends of four translation paths (25); the other ends of the four driving branch pipes (14) are all connected to an end of the driving main pipe (13) away from the booster pump (30); the driving main pipe (13) is provided with a first one-way valve (15); the conducting direction of the first one-way valve (15) is such that the booster valve is conducted to the translation path (25); a driving valve (16) and a first exhaust pipe (17) are respectively provided before and after the first one-way valve (15); the first exhaust pipe (17) is provided with a first exhaust valve (18); The pressurizing pipe comprises a pressurizing main pipe (19) and two pressurizing branch pipes (20), one end of the pressurizing main pipe (19) is connected to the boosting pump (30), one end of the two pressurizing branch pipes (20) is respectively connected to the rear ends of two pressurizing channels (29), and the other ends of the two pressurizing branch pipes (20) are both connected to one end of the pressurizing main pipe (19) away from the boosting pump (30), and the two pressurizing branch pipes (20) are both provided with a second one-way valve (21), the conduction direction of the second one-way valve (21) is the conduction direction of the boosting valve to the pressurizing channel (29), and the first one-way valve (15) is respectively provided with a pressurizing valve (22) and a second exhaust pipe (23), and the second exhaust pipe (23) is provided with a second exhaust valve (24).

4. The performance detection device for high temperature and high pressure wear-resistant ball valve according to claim 3 is characterized in that: The utility model also comprises a lifting drive mechanism, wherein the lifting drive mechanism comprises a lifting sleeve (6), a lifting path (26) and a first connecting channel (27); the lifting sleeve (6) is longitudinally slidably arranged on the top plate of the box body (1); the two lifting paths (26) are respectively located on both sides of the lifting sleeve (6) and are vertically arranged in the top plate of the box body (1); lifting rods (7) are arranged on both sides of the lifting sleeve (6); the upper ends of the lifting rods (7) are sealed and slidably arranged in the lifting paths (26); the lower ends are fixedly connected to the lifting sleeve (6); the first connecting channel (27) is located in the top plate of the box body (1) and is two relatively mirror-image-arranged ones; one end of the first connecting channel (27) is connected to the end of the translation path (25) located above one side of the box body (1); and the other end is connected to the upper end of the lifting path (26); the extension rod (4) is rotatably arranged in the lifting sleeve (6); a tension spring (8) is arranged between the lifting sleeve (6) and the box body (1); the tension spring (8) is used to drive the lifting sleeve (6) to move upward.

5. The performance detection device for high temperature and high pressure wear-resistant ball valve according to claim 4 is characterized in that: When the upper rod (501) of the translation rod (5) is located at the front of the translation path (25), the connection between the translation path (25) and the first connecting channel (27) is in a closed state; when the translation rod (5) moves to the end of the translation path (25), the connection between the translation path (25) and the first connecting channel (27) is in an open state, and the gas in the translation path (25) enters the lifting path (26) through the first connecting channel (27) and drives the lifting sleeve (6) to descend, so that the lower end of the extension rod (4) is sleeved on the upper end of the rotating rod of the ball valve.

6. The performance detection device for high temperature and high pressure wear-resistant ball valve according to claim 5 is characterized in that: It also includes a centering drive mechanism, the centering drive mechanism including a second connecting channel (28), the second connecting channel (28) being located in the back plate of the box body (1), the two second connecting channels (28) being located on the left and right sides of the back plate of the box body (1), one end of the second connecting channel (28) being correspondingly arranged on the upper rod (501), and the other end of the second connecting channel (28) being correspondingly arranged on the connecting rod (503); The upper rod (501) and the connecting rod (503) are both hollow structures. When the translation rod (5) moves to the end of the translation path (25), the upper rod (501) and the connecting rod (503) are both sealed and connected to the second connecting channel (28). The gas in the translation path (25) enters the translation cylinder (2) through the upper rod (501), the second connecting channel (28) and the connecting rod (503), so that the clamping column (3) extends outward from the translation cylinder (2).

7. The performance detection device for high temperature and high pressure wear-resistant ball valve according to claim 6, characterized in that: An opening and closing mechanism is provided between the upper rod (501) and the second connecting channel (28), the opening and closing mechanism comprising a fixed sealing plate (9) and a rotating sealing plate (10), the fixed sealing plate (9) being fixedly arranged in the upper rod (501), the rotating sealing plate (10) being rotatably arranged in the upper rod (501) and being located on a side of the fixed sealing plate (9) close to the second connecting channel (28), the fixed sealing plate (9) and the rotating sealing plate (10) being sealingly slidably fitted, and both the fixed sealing plate (9) and the rotating sealing plate (10) being provided with through holes; When the upper rod (501) of the translation rod (5) is located in front of the translation path (25), the through hole of the fixed sealing plate (9) does not overlap with the through hole of the rotating sealing plate (10), and the gas in the translation path (25) drives the translation rod (5) to move; when the translation rod (5) moves to the end of the translation path (25), the through hole of the fixed sealing plate (9) overlaps with the through hole of the rotating sealing plate (10), and the gas in the translation path (25) enters the second connecting channel (28) through the through hole of the fixed sealing plate (9) and the through hole of the rotating sealing plate (10).

8. The performance detection device for high temperature and high pressure wear-resistant ball valve according to claim 7 is characterized in that: The opening and closing mechanism further comprises an opening and closing rod (11), the opening and closing rod (11) being fixedly arranged in the second connecting channel (28), the opening and closing rod (11) being coaxially arranged with the rotating sealing plate (10), the end of the opening and closing rod (11) facing the rotating sealing plate (10), an opening and closing hole being arranged at one end of the rotating sealing plate (10) facing the opening and closing rod (11), the opening and closing hole being arranged with an internal thread, and the opening and closing rod (11) being arranged with an external thread; When the translation rod (5) moves to the end of the translation path (25), the opening and closing rod (11) is threadedly sleeved into the opening and closing hole of the rotating sealing plate (10), and the opening and closing rod (11) drives the rotating sealing plate (10) to rotate, so that the through hole of the fixed sealing plate (9) coincides with the through hole of the rotating sealing plate (10).

9. The performance detection device for high temperature and high pressure wear-resistant ball valve according to claim 8, characterized in that: A torsion spring is provided between the fixed sealing plate (9) and the rotating sealing plate (10); a first gear lever is provided on the side of the fixed sealing plate (9) facing the rotating sealing plate (10); and a second gear lever is provided on the side of the rotating sealing plate (10); the torsion spring drives the rotating sealing plate (10) to rotate relative to the fixed sealing plate (9); When the opening and closing rod (11) is not inserted into the opening and closing hole of the rotating sealing plate (10), the second stop rod abuts against the first stop rod, so that the through hole of the fixed sealing plate (9) and the through hole of the rotating sealing plate (10) remain in a non-overlapping state.

10. The performance detection device for high temperature and high pressure wear-resistant ball valve according to claim 9, characterized in that: A pressurizing chamber is provided in the clamp column (3), and the pressurizing chamber passes through the end surface of the clamp column (3) and is connected to the ball valve. An end of the sliding tube (12) close to the ball valve is connected to the pressurizing chamber of the clamp column (3) through a hose.

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