Valve pressure testing machine

Abstract

The utility model discloses a valve pressure testing machine, and belongs to the technical field of pressure testing. A valve pressure testing machine comprises a fixing seat and a clamping circular plate, a screw motor is arranged at the bottom of an inner cavity of a fixing table, a clamping assembly is arranged on the inner wall of a moving frame and comprises a fixing plate, a fixing frame is arranged on the outer wall of the rear portion of a water tank, a fixing circular plate is arranged at the bottom of a metal mesh plate, and a clamping block is clamped in the fixing circular plate. The sealing rubber sleeve I and the sealing rubber sleeve II can be matched with the rubber circular pad and the rubber pad to form a double-sealing mode to seal the two ends of the valve, the sealing effect is prevented from being influenced by gas leakage, the valves of various sizes can be tested, the use flexibility of the valve is effectively improved, and due to the arrangement of the metal mesh plate, the sealing effect is improved. The injury to personnel caused by splashed fragments can be effectively prevented, and the use safety of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure testing, and more specifically to a valve pressure testing machine. Background Art

[0002] A valve is a device used to control the flow of fluids, usually used in piping systems or equipment. A valve can control the flow, pressure and direction of a fluid by opening, closing or adjusting the opening of the valve. A valve usually consists of a valve body, a valve cover, a valve core, a seal and other components.

[0003] The valve pressure tester is a device used to test the sealing performance and pressure resistance of valves under different pressures. This tester usually simulates the pressure conditions that the valve may encounter in actual use by applying different pressures, and detects whether the valve can seal normally and withstand pressure, thereby ensuring the safety performance and reliability of the valve.

[0004] The existing valve pressure tester still has the following problems: In actual use, the existing valve pressure tester often needs to inject gas into the valve for pressure testing to check its sealing, but the adjustment is cumbersome when clamping valves of various sizes, and the stability is not ideal. In the process of pressurizing valves of various sizes, due to the different diameters of the valves, the gas often leaks due to poor sealing during the clamping and pressurizing process, which undoubtedly brings great trouble to the test;

[0005] In addition, the existing valve pressure testing machines have poor protection performance. Especially during the pressure test on valves of poor quality, the valves will explode and break due to the increase in air pressure. These exploded fragments can easily pose certain safety hazards to the testers.

[0006] In view of this, we propose a valve pressure testing machine. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] The utility model aims to provide a valve pressure testing machine to solve the problems of poor flexibility, poor sealing effect and poor protective performance when clamping valves of various sizes proposed in the above background technology.

[0009] 2. Technical solution

[0010] A valve pressure testing machine comprises a fixed seat and a clamping circular plate, a pressurizing control device and a fixed platform are arranged on the top of the fixed seat, a screw motor is arranged at the bottom of the inner cavity of the fixed platform, a plurality of screw motor output ends are connected to screws, a water tank is arranged on the top of the fixed platform, a tempered glass window is arranged on the outer wall in front of the water tank, guide grooves are opened on both sides of the inner wall of the water tank, a plurality of screws extend into the guide grooves respectively, a moving frame is sleeved on the outer walls of the plurality of screws, a clamping assembly is arranged on the inner wall of the moving frame, the clamping assembly comprises a fixed plate, a fixed frame is arranged on the outer wall behind the water tank, a hydraulic lift is arranged on the top of the fixed frame, a metal mesh plate is connected to the output end of the hydraulic lift, a fixed circular plate is arranged at the bottom of the metal mesh plate, a clamping block is clamped inside the fixed circular plate, and a sealing clamping block is arranged at the bottom of the clamping block.

[0011] Preferably, a rubber pad is provided on the top of the fixing plate, connecting plates are provided on the outer walls on both sides of the fixing plate, cylinders are provided on the side walls of the connecting plates, and clamping plates are connected to the output ends of the cylinders.

[0012] Preferably, a guide placement block is threadedly connected to the top of the fixing plate, and a sealing rubber sleeve is sleeved on the circumferential outer wall of the guide placement block.

[0013] Preferably, a threaded rod is threadedly connected to the front outer wall of the fixed circular plate, and a protruding rod is connected to the end of the threaded rod.

[0014] Preferably, a snap-in box is provided at the bottom of the inner cavity of the fixed circular plate, multiple side walls of the snap-in box are provided with springs, multiple ends of the springs are connected to movable plates, a guide slider is provided at the bottom of the movable plate, a guide groove matching the guide slider is opened at the bottom of the fixed circular plate, and multiple side walls of the movable plates are also provided with limiting columns, and the limiting columns extend into the interior of the snap-in box.

[0015] Preferably, a clamping block matching the clamping box is arranged on the top of the clamping circular plate, a plurality of side walls of the clamping block are provided with limiting holes matching the limiting columns, a pressurizing tube is arranged inside the clamping circular plate, and an air supply pipe is connected to the end of the pressurizing tube.

[0016] Preferably, a pressurizing hole is opened on the top of the sealing block, a second sealing rubber sleeve is sleeved on the circumferential outer wall of the sealing block, and a sealing circular pad is arranged at the bottom of the clamping circular plate.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the utility model has the advantages that: when it is necessary to test valves of various sizes, the guide placement block and the sealing block of appropriate sizes can be selected according to the calibers of the valve inlet and outlet, and the guide placement block is threadedly fixed on the top of the fixed plate, and the clamping circular plate carrying the sealing block is clamped inside the fixed circular plate, and then the convex rod is rotated so that it can drive the movable plate carrying the limit column to move to both sides to clamp and fix the clamping circular plate, and then the valve outlet is clamped on the guide placement block, and multiple cylinders are used to drive the clamping plate to clamp the outer walls of valves of various sizes to avoid the phenomenon of offset during the pressurization process, and then the hydraulic lift can be used to drive the sealing block to seal the valve inlet, and the two ends of the valve are sealed by using the sealing rubber sleeve 1 and the sealing rubber sleeve 2 in combination with the rubber round pad and the rubber pad to form a double seal, so as to avoid gas leakage affecting its sealing effect, while improving its flexibility of use, it also better ensures the sealing performance during the pressurization test;

[0019] During the test, multiple screw motors can be used to drive the clamping assembly to descend to the bottom of the water tank, and then the hydraulic lift can be used to drive the sealing block to seal and pressurize the valve inlet. During this process, the metal mesh plate will also descend. Since the valve is always inside the water tank during the pressurization process, when a low-quality valve bursts due to pressurization, the splashing debris can be effectively shielded and protected to avoid damage to personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of the metal mesh plate of the utility model;

[0022] Figure 3 This is a schematic diagram of the fixed plate structure of the utility model;

[0023] Explanation of reference numerals in the figure: 100, fixed seat; 110, pressurization control device; 120, fixed platform; 130, screw motor; 200, water tank; 210, guide groove; 220, tempered glass window; 230, fixed frame; 240, hydraulic lift; 300, moving frame; 310, fixed plate; 320, connecting plate; 330, cylinder; 340, clamping plate; 350, rubber pad; 360, guide placement block; 370, sealing rubber sleeve one; 400, metal mesh plate; 410, fixed circular plate; 420, threaded rod; 430, convex rod; 440, snap-in box; 450, spring; 460, movable plate; 470, snap-in circular plate; 471, snap-in block; 472, pressurization pipe; 473, gas transmission pipe; 474, sealing block; 475, pressurization hole; 476, sealing rubber sleeve two. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] See also Figure 1-3 , the utility model provides a technical solution:

[0028] A valve pressure testing machine includes a fixing seat 100 and a clamping circular plate 470, a pressurization control device 110 and a fixing platform 120 are arranged on the top of the fixing seat 100, a screw motor 130 is arranged at the bottom of the inner cavity of the fixing platform 120, and a plurality of screw motors 130 are connected to the output ends of the screw motors 130;

[0029] In some embodiments: multiple screw motors 130 facilitate the lifting and placement of the valve, and when testing, the valve can be lowered and submerged in the water source medium inside the water tank 200. The pressurization control device 110 generally includes a control valve, a sensing element, a control system, and auxiliary components. The working principle of the pressurization control device 110 is generally that when the system pressure exceeds the set range, the sensing element will detect this change and transmit a signal to the control system; the control system determines whether it is necessary to adjust the opening of the control valve according to the preset control logic; the control valve adjusts the flow rate according to the command of the control system, thereby adjusting the system pressure to keep it within a safe range, and the pressurized air source is generated and transported by an external conventional compressor.

[0030] A water tank 200 is disposed on the top of the fixing platform 120, and a tempered glass window 220 is disposed on the outer wall in front of the water tank 200;

[0031] It is convenient to observe whether the valve inside the water tank 200 is leaking during the pressurization process, so as to judge the sealing performance of the valve;

[0032] Guide grooves 210 are provided on both sides of the inner wall of the water tank 200, and a plurality of screw rods extend into the guide grooves 210 respectively. A moving frame 300 is sleeved on the outer wall of the plurality of screw rods. A clamping assembly is provided on the inner wall of the moving frame 300, and the clamping assembly includes a fixing plate 310. A fixing frame 230 is provided on the outer wall at the rear of the water tank 200, and a hydraulic lift 240 is provided on the top of the fixing frame 230. A metal mesh plate 400 is connected to the output end of the hydraulic lift 240.

[0033] The metal mesh plate 400 is conveniently used to protect the valve area during pressurization to avoid injury to personnel due to splashing of pressurized debris;

[0034] A fixed circular plate 410 is disposed at the bottom of the metal mesh plate 400 . A clamping block 471 is clamped inside the fixed circular plate 410 . A sealing clamping block 474 is disposed at the bottom of the clamping block 471 .

[0035] Specifically, a rubber pad 350 is provided on the top of the fixed plate 310, connecting plates 320 are provided on the outer walls on both sides of the fixed plate 310, cylinders 330 are provided on the side walls of multiple connecting plates 320, and clamping plates 340 are connected to the output ends of multiple cylinders 330, which is convenient for clamping and fixing the outside of valves of various sizes to avoid deviation during pressurization.

[0036] Furthermore, a guide placement block 360 is threadedly connected to the top of the fixing plate 310 , and a sealing rubber sleeve 370 is sleeved on the circumferential outer wall of the guide placement block 360 .

[0037] In some embodiments: the sealing rubber sleeve 1 370 and the sealing rubber sleeve 2 476 on the outer wall of the guide placement block 360 and the sealing block 474 are inclined at a small angle, so that when the hydraulic lift 240 descends, they can cooperate with the rubber round pad and the rubber pad 350 to better seal the air inlet and outlet of the valve.

[0038] Furthermore, a threaded rod 420 is threadedly connected to the outer wall in front of the fixed circular plate 410 , and a protruding rod 430 is connected to the end of the threaded rod 420 , making it more convenient to replace sealing blocks 474 of various sizes. The sealing blocks 474 are integrally formed at the bottom of the clamping circular plate 470 .

[0039] Furthermore, a snap-in box 440 is provided at the bottom of the inner cavity of the fixed circular plate 410, and multiple springs 450 are provided on the side walls of the snap-in boxes 440. The ends of the multiple springs 450 are connected to movable plates 460. A guide slider is provided at the bottom of the movable plate 460. A guide groove matching the guide slider is opened at the bottom of the fixed circular plate 410. Limiting columns are also provided on the side walls of the multiple movable plates 460. The limiting columns extend into the interior of the snap-in box 440 to facilitate the installation or replacement of the snap-in circular plate 470 carrying sealing blocks 474 of various sizes.

[0040] It is worth mentioning that a clamping block 471 matching the clamping box 440 is arranged on the top of the clamping circular plate 470, and a plurality of side walls of the clamping blocks 471 are provided with limiting holes matching the limiting columns. A pressurized tube 472 is arranged inside the clamping circular plate 470, and an air supply pipe 473 is connected to the end of the pressurized tube 472 to facilitate the injection of external air pressure into the pressurized tube 472 and facilitate pressure testing of the valve.

[0041] It is worth noting that a pressurized hole 475 is opened on the top of the sealing block 474, a sealing rubber sleeve 476 is sleeved on the circumferential outer wall of the sealing block 474, and a sealing round pad is arranged at the bottom of the clamping circular plate 470, so as to facilitate better sealing when injecting gas into the valve inlet.

[0042] In some embodiments: the device can be powered by an external conventional power source.

[0043] In addition, the circuits, electronic components and modules involved in the utility model are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to the internal structure and methods.

[0044] Working principle: When it is necessary to test valves of various sizes, the guide placement block 360 and the sealing block 474 of appropriate sizes can be selected according to the diameters of the valve inlet and outlet, and the guide placement block 360 can be threadedly fixed on the top of the fixed plate 310, and the clamping circular plate 470 carrying the sealing block 474 can be clamped inside the fixed circular plate 410, and then the protruding rod 430 can be rotated so that it can drive the movable plate 460 carrying the limiting column to move to both sides to clamp and fix the clamping circular plate 470, and then the valve outlet can be clamped on the guide placement block 360, and multiple cylinders 330 can be used to drive the supporting plate 340 to clamp the outer walls of valves of various sizes to avoid deviation during the pressurization process, and then the hydraulic lift 240 can be used to drive the sealing block 474 to seal the valve inlet, and the guide placement block can be used to seal the valve inlet. The sealing rubber sleeve 1 370 and the sealing rubber sleeve 2 476 on the outer wall of 360 and the sealing block 474 cooperate with the rubber round pad and the rubber pad 350 to form a double seal to seal the two ends of the valve to prevent gas leakage from affecting its sealing effect, so as to facilitate effective pressure testing of valves of various calibers and improve the sealing performance during pressurization. During the test, the multiple screw motors 130 can be used to drive the clamping assembly to descend to the bottom of the water tank 200, and then the hydraulic lift 240 can be used to drive the sealing block 474 to seal and pressurize the valve air inlet. In this process, the metal mesh plate 400 will also descend. Since the valve is always inside the water tank 200 during the pressurization process, when an inferior valve bursts due to pressurization, the splashed debris can be effectively shielded and protected to avoid damage to personnel.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A valve pressure testing machine, comprising a fixing seat (100) and a clamping circular plate (470), wherein a pressure control device (110) and a fixing platform (120) are arranged on the top of the fixing seat (100), characterized in that: A screw motor (130) is arranged at the bottom of the inner cavity of the fixed platform (120), and a plurality of screw motors (130) are connected to screws at their output ends. A water tank (200) is arranged at the top of the fixed platform (120), and a tempered glass window (220) is arranged on the front outer wall of the water tank (200). Guide grooves (210) are opened on both sides of the inner wall of the water tank (200), and a plurality of screws extend into the inside of the guide grooves (210) respectively. A movable frame (300) is sleeved on the outer walls of the plurality of screws, and the inner wall of the movable frame (300) is provided with a A clamping assembly is provided, the clamping assembly comprising a fixing plate (310), a fixing frame (230) being provided on the rear outer wall of the water tank (200), a hydraulic lift (240) being provided on the top of the fixing frame (230), a metal mesh plate (400) being connected to the output end of the hydraulic lift (240), a fixing circular plate (410) being provided at the bottom of the metal mesh plate (400), a fixing block (471) being clamped inside the fixing circular plate (410), and a sealing clamping block (474) being provided at the bottom of the clamping block (471).

2. A valve pressure testing machine according to claim 1, characterized in that: A rubber pad (350) is provided on the top of the fixing plate (310), connecting plates (320) are provided on the outer walls of both sides of the fixing plate (310), cylinders (330) are provided on the side walls of the connecting plates (320), and clamping plates (340) are connected to the output ends of the cylinders (330).

3. A valve pressure testing machine according to claim 2, characterized in that: The top of the fixing plate (310) is threadedly connected to a guide placement block (360), and the outer circumferential wall of the guide placement block (360) is sleeved with a sealing rubber sleeve (370).

4. A valve pressure testing machine according to claim 3, characterized in that: A threaded rod (420) is threadedly connected to the front outer wall of the fixed circular plate (410), and a protruding rod (430) is connected to the end of the threaded rod (420).

5. A valve pressure testing machine according to claim 4, characterized in that: A snap-in box (440) is arranged at the bottom of the inner cavity of the fixed circular plate (410), a plurality of springs (450) are arranged on the side walls of the snap-in box (440), a movable plate (460) is connected to the ends of the plurality of springs (450), a guide slider is arranged at the bottom of the movable plate (460), a guide groove matching the guide slider is opened at the bottom of the fixed circular plate (410), and a plurality of limit columns are also arranged on the side walls of the movable plates (460), and the limit columns extend into the interior of the snap-in box (440).

6. A valve pressure testing machine according to claim 5, characterized in that: A clamping block (471) matching the clamping box (440) is arranged on the top of the clamping circular plate (470), and a plurality of side walls of the clamping block (471) are provided with limiting holes matching the limiting columns. A pressurizing tube (472) is arranged inside the clamping circular plate (470), and an end of the pressurizing tube (472) is connected to a gas delivery tube (473).

7. A valve pressure testing machine according to claim 6, characterized in that: A pressurizing hole (475) is provided at the top of the sealing block (474), a second sealing rubber sleeve (476) is sleeved on the circumferential outer wall of the sealing block (474), and a sealing circular pad is provided at the bottom of the clamping circular plate (470).

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