Sealing performance detection equipment for sealing stop valve

Abstract

The utility model discloses a sealing stop valve sealing performance detection device, which comprises a bottom frame and a mounting frame, the mounting frame is hinged in the bottom frame, a detection assembly is mounted in the mounting frame, the detection assembly comprises a vertically arranged screw rod, the screw rod is in threaded connection with the top of the mounting frame, and the screw rod is in threaded connection with the mounting frame. One end of the bottom of the lead screw is rotatably connected with a horizontally-arranged plugging frame, the outer wall of the top of the plugging frame is fixedly connected with a plurality of vertically-arranged limiting rods, the limiting rods are slidably inserted into the mounting frame, and the outer wall of the bottom of the plugging frame and the inner wall of the bottom of the mounting frame are each provided with a through hole; through the arrangement of the detection assembly, the plugging frame can be driven to move towards the stop valve stably and rapidly, operation is stable and rapid, it can be guaranteed that the sealing performance between the plugging frame and the stop valve is strong enough, and the situation that the sealing performance between the plugging frame and the valve body is affected due to uneven stress is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of gate valve testing technology, specifically a sealing performance testing device for a gate valve. Background Technology

[0002] Sealing gate valves are key components in industrial pipeline systems for controlling fluid flow and are widely used in numerous industries such as petroleum, chemical, natural gas, power, and pharmaceuticals. In these industries, the transportation and storage of fluids require precise control, and the sealing performance of the sealing gate valve directly affects the safety and stability of the entire system.

[0003] A search revealed a utility model patent with Chinese patent publication number CN118275057B, which discloses a sealing performance testing device for a gate valve. The device includes a connecting circular plate, a threaded rod, a nut, an air-blocking plate, and a detector. The connecting circular plate is connected to the threaded rod; the threaded rod is screwed to the nut; the threaded rod is slidably connected to the air-blocking plate; the air-blocking plate is fixedly connected to the detector, which is located in the center of the connecting circular plate; the detector is connected to an external power supply.

[0004] The above-mentioned device uses multiple nuts to press the air-blocking plate to fix the shut-off valve. However, since the rotation of the multiple nuts is inevitably different, it is difficult for the air-blocking plate to keep parallel to the shut-off valve, which will affect the sealing performance. In addition, operating multiple nuts separately is also cumbersome and inconvenient to use. Utility Model Content

[0005] The purpose of this invention is to provide a sealing performance testing device for a sealing shut-off valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sealing performance testing device for a sealing shut-off valve, comprising a base frame and a mounting frame. The mounting frame is hinged inside the base frame, and a testing component is installed inside the mounting frame. The testing component includes a vertically arranged lead screw threaded to the top of the mounting frame. One end of the lead screw is rotatably connected to a horizontally arranged sealing frame. Several vertically arranged limiting rods are fixedly connected to the top outer wall of the sealing frame, and the limiting rods are slidably inserted into the mounting frame. A through hole is provided on the bottom outer wall of the sealing frame and the bottom inner wall of the mounting frame. An air inlet hose is fixedly inserted into the bottom inner wall of the sealing frame, and one end of the air inlet hose is connected to the through hole at the bottom of the sealing frame. An air pump is installed outside the mounting frame, and the other end of the air inlet hose is connected to the air pump.

[0007] It can drive the plugging frame to move smoothly and quickly towards the stop valve, with stable and quick operation. It can ensure that the sealing between the plugging frame and the stop valve is strong enough, effectively preventing the sealing between the plugging frame and the valve body from being affected by uneven force. The stop valve is placed inside the mounting frame, and the screw is driven by the wheel to rotate inside the mounting frame. The screw will rotate and move downward along the mounting frame. Driven by the screw and with the cooperation of several limit rods, the plugging frame will move smoothly towards the stop valve. Then the plugging frame will fit tightly against the top of the stop valve, so that the sealing between the two is good enough. Moreover, under the restriction of several limit rods, the plugging frame can effectively prevent it from tilting.

[0008] As a further preferred embodiment of this technical solution, a water tank is provided on the inner wall of the bottom of the base frame, and an air outlet pipe is fixedly installed on the outer wall of the bottom of the mounting frame. The air outlet pipe is connected to the through hole at the bottom of the mounting frame, and one end of the bottom of the air outlet pipe extends into the water tank.

[0009] As a further preferred embodiment of this technical solution, an adjustment assembly is installed on the outer side of the base frame. The adjustment assembly includes a worm gear, which is coaxially fixed to one end of the rotating shaft of the mounting frame. Two horizontally arranged extension plates are fixedly connected to one side of the outer wall of the base frame. The same worm is rotatably connected between the two extension plates. A motor is fixedly installed on the top outer wall of the top extension plate, and the output end of the motor is coaxially fixed to one end of the top of the worm.

[0010] By adjusting the components to change the mounting frame and the gate valve to different tilt angles, different usage states of the valve can be simulated, making the test data consistent with the actual usage state, which is beneficial to improving the test effect. Start the motor on the top of the extension plate, the motor drives the worm to rotate, the worm drives the worm wheel to rotate through meshing, and the worm wheel can drive the mounting frame and the gate valve inside to tilt.

[0011] As a further preferred embodiment of this technical solution, a rubber pad is fixedly connected to both the bottom outer wall of the sealing frame and the bottom inner wall of the mounting frame.

[0012] As a further preferred embodiment of this technical solution, several of the limiting rods have a connecting ring fixedly installed on the top outer wall of the same horizontally arranged ring.

[0013] As a further preferred embodiment of this technical solution, the bottom outer wall of the mounting frame is fixedly connected with several horizontally arranged reinforcing ribs.

[0014] As a further preferred embodiment of this technical solution, the air intake hose is made of steel wire hose.

[0015] This utility model provides a sealing performance testing device for a sealed shut-off valve, which has the following beneficial effects:

[0016] (1) By setting up a detection component, this utility model can drive the plugging frame to move smoothly and quickly toward the stop valve. The operation is stable and quick, and it can ensure that the sealing between the plugging frame and the stop valve is strong enough. It can effectively avoid the plugging frame from affecting the sealing between the plugging frame and the valve body due to uneven force. The stop valve is placed inside the mounting frame, and the screw is driven by the wheel to rotate inside the mounting frame. The screw will rotate and move downward along the mounting frame. Under the drive of the screw and the cooperation of several limit rods, the plugging frame will move smoothly toward the stop valve. Then the plugging frame will fit tightly against the top of the stop valve, so that the sealing between the two is good enough. In addition, under the restriction of several limit rods, the plugging frame can effectively avoid tilting.

[0017] (2) By setting an adjustment component, the installation frame and the shut-off valve can be changed to different tilt angles, which can simulate different use states of the valve and make the test data conform to the actual use state, which is conducive to improving the test effect. Start the motor at the top of the extension plate, the motor drives the worm to rotate, the worm drives the worm wheel to rotate through meshing, and the worm wheel can drive the installation frame and the shut-off valve inside to tilt. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point B;

[0022] In the diagram: 1. Base frame; 2. Water tank; 3. Mounting frame; 4. Detection component; 5. Adjustment component; 401. Lead screw; 402. Sealing frame; 403. Limiting rod; 404. Air inlet hose; 405. Air outlet pipe; 406. Rubber pad; 407. Connecting ring; 408. Reinforcing rib; 501. Worm gear; 502. Extension plate; 503. Worm; 504. Motor. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 2 and Figure 4As shown, in this embodiment, a sealing performance testing device for a sealing shut-off valve includes a base frame 1 and a mounting frame 3. The mounting frame 3 is hinged inside the base frame 1. A testing component 4 is installed inside the mounting frame 3. The testing component 4 includes a vertically arranged lead screw 401, which is threaded to the top of the mounting frame 3. One end of the lead screw 401 is rotatably connected to a horizontally arranged sealing frame 402. Several vertically arranged limiting rods 403 are fixedly connected to the top outer wall of the sealing frame 402. The limiting rods 403 are slidably inserted into the mounting frame 3. A through hole is opened on the bottom outer wall of the sealing frame 402 and the bottom inner wall of the mounting frame 3. An air inlet hose 404 is fixedly inserted into the bottom inner wall of the sealing frame 402. One end of the air inlet hose 404 is connected to the through hole at the bottom of the sealing frame 402. An air pump is installed outside the mounting frame 3, and the other end of the air inlet hose 404 is connected to the air pump.

[0025] A water tank 2 is installed on the inner wall of the bottom of the base frame 1, and an air outlet pipe 405 is fixedly installed on the outer wall of the bottom of the mounting frame 3. The air outlet pipe 405 is connected to the through hole at the bottom of the mounting frame 3, and one end of the bottom of the air outlet pipe 405 extends into the interior of the water tank 2.

[0026] Place the shut-off valve inside the mounting frame 3. Drive the screw 401 inside the mounting frame 3 via the wheel. The screw 401 will rotate and move downward along the mounting frame 3. The sealing frame 402 will move smoothly towards the shut-off valve under the drive of the screw 401 and the cooperation of several limit rods 403. Then the sealing frame 402 will fit tightly against the top of the shut-off valve, making the seal good enough. The sealing frame 402 can be effectively prevented from tilting under the restriction of several limit rods 403. Start the air pump outside the mounting frame 3. The airflow enters the shut-off valve through the air inlet hose 404 and the through hole of the sealing frame 402. If the seal is not tight enough, the leaked air will enter the water tank 2 through the other end of the shut-off valve, through the through hole at the bottom of the mounting frame 3 and the air outlet pipe 405. The seal can be judged by observing the bubbles.

[0027] like Figure 2 and Figure 3 As shown, an adjustment assembly 5 is installed on the outside of the base frame 1. The adjustment assembly 5 includes a worm gear 501, which is coaxially fixed to one end of the rotating shaft of the mounting frame 3. Two horizontally arranged extension plates 502 are fixedly connected to one side of the outer wall of the base frame 1. The same worm gear 503 is rotatably connected between the two extension plates 502. A motor 504 is fixedly installed on the top outer wall of one of the top extension plates 502. The output end of the motor 504 is coaxially fixed to one end of the top of the worm gear 503.

[0028] A rubber pad 406 is fixedly connected to the bottom outer wall of the sealing bracket 402 and the bottom inner wall of the mounting frame 3, which can further increase the sealing between the two and the shut-off valve.

[0029] By adjusting component 5 to change the mounting frame 3 and the shut-off valve to different tilt angles, different usage states of the valve can be simulated, making the test data consistent with the actual usage state, which is beneficial to improving the test effect. Start the motor 504 on the top of the extension plate 502. The motor 504 drives the worm 503 to rotate. The worm 503 drives the worm wheel 501 to rotate through meshing. The worm wheel 501 can then drive the mounting frame 3 and the shut-off valve inside it to tilt.

[0030] like Figure 1 and Figure 2 As shown, several limit rods 403 have a connecting ring 407 fixedly installed on the top outer wall of the same horizontal setting, which can connect several limit rods 403 into a whole, thereby preventing the limit rods 403 from tilting during use.

[0031] like Figure 1 and Figure 2 As shown, several horizontally arranged reinforcing ribs 408 are fixedly connected to the bottom outer wall of the mounting frame 3, which can prevent the connection end between the mounting frame 3 and the base frame 1 from being damaged due to force.

[0032] like Figure 1 and Figure 2 As shown, the air intake hose 404 is made of steel wire hose, which allows it to withstand greater air pressure without affecting the movement of the sealing frame 402.

[0033] This utility model provides a sealing performance testing device for a sealed shut-off valve, the specific working principle of which is as follows:

[0034] When the device is working, the shut-off valve is placed inside the mounting frame 3. The screw 401 is rotated inside the mounting frame 3 by the wheel drive. The screw 401 will rotate and move downward along the mounting frame 3. The sealing frame 402 will move smoothly towards the shut-off valve under the drive of the screw 401 and the cooperation of several limit rods 403. Then the sealing frame 402 will fit tightly against the top of the shut-off valve, so that the two are sufficiently sealed. In addition, the sealing frame 402 can be effectively prevented from tilting under the restriction of several limit rods 403. The air pump outside the mounting frame 3 is started. The airflow enters the shut-off valve through the air inlet hose 404 and the through hole of the sealing frame 402. If the sealing is insufficient, the leaked air will enter the water tank 2 through the other end of the shut-off valve, through the through hole at the bottom of the mounting frame 3 and the air outlet pipe 405. The sealing can be judged by observing the bubbles. The mounting frame 3 and the shut-off valve can also be adjusted to different tilt angles by adjusting component 5, which can simulate different use states of the valve and make the test data conform to the actual use state, which is conducive to improving the test effect. Start the motor 504 on the top of the extension plate 502. The motor 504 drives the worm 503 to rotate. The worm 503 drives the worm wheel 501 to rotate through meshing. The worm wheel 501 can then drive the mounting frame 3 and the shut-off valve inside it to tilt.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing performance testing device for a sealing gate valve, comprising a base frame (1) and a mounting frame (3), characterized in that: The mounting frame (3) is hinged inside the base frame (1). A detection component (4) is installed inside the mounting frame (3). The detection component (4) includes a vertically arranged lead screw (401), which is threaded to the top of the mounting frame (3). A horizontally arranged sealing frame (402) is rotatably connected to one end of the lead screw (401). Several vertically arranged limiting rods (403) are fixedly connected to the top outer wall of the sealing frame (402). Each of the limiting rods (403) is slidably inserted into the mounting frame (3). A through hole is provided on the bottom outer wall of the sealing frame (402) and the bottom inner wall of the mounting frame (3). An air inlet hose (404) is fixedly inserted into the bottom inner wall of the sealing frame (402). One end of the air inlet hose (404) is connected to the bottom through hole of the sealing frame (402). An air pump is installed on the outside of the mounting frame (3). The other end of the air inlet hose (404) is connected to the air pump.

2. The sealing performance testing device for a sealing shut-off valve according to claim 1, characterized in that: The bottom inner wall of the base frame (1) is provided with a water tank (2), and the bottom outer wall of the mounting frame (3) is fixedly installed with an air outlet pipe (405). The air outlet pipe (405) is connected to the bottom through hole of the mounting frame (3), and one end of the bottom of the air outlet pipe (405) extends into the interior of the water tank (2).

3. The sealing performance testing device for a sealing shut-off valve according to claim 1, characterized in that: An adjustment assembly (5) is installed on the outside of the base frame (1). The adjustment assembly (5) includes a worm gear (501). The worm gear (501) is coaxially fixed to one end of the rotating shaft of the mounting frame (3). Two horizontally arranged extension plates (502) are fixedly connected to one side of the outer wall of the base frame (1). The same worm (503) is rotatably connected between the two extension plates (502). A motor (504) is fixedly installed on the top outer wall of the top extension plate (502). The output end of the motor (504) is coaxially fixed to one end of the top of the worm (503).

4. The sealing performance testing device for a sealing shut-off valve according to claim 1, characterized in that: A rubber pad (406) is fixedly connected to both the bottom outer wall of the sealing frame (402) and the bottom inner wall of the mounting frame (3).

5. The sealing performance testing device for a sealing shut-off valve according to claim 1, characterized in that: A connecting ring (407) is fixedly installed on the top outer wall of several of the limiting rods (403) at the same horizontal level.

6. The sealing performance testing device for a sealing shut-off valve according to claim 1, characterized in that: The bottom outer wall of the mounting frame (3) is fixedly connected with several horizontally arranged reinforcing ribs (408).

7. The sealing performance testing device for a sealing shut-off valve according to claim 1, characterized in that: The air intake hose (404) is made of steel wire hose.

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