High-pressure butt welding end valve testing tool

Abstract

The utility model relates to the field of valve pressure testing, and discloses a high-pressure butt welding end valve testing tool which comprises a base, a vertical plate is fixedly connected to one side of the top of the base, electric push rods are symmetrically and fixedly connected to one side of the vertical plate, and two clamping plates are symmetrically and slidably arranged on the top of the base. According to the high-pressure butt welding end valve testing tool, after a valve is subjected to pressure testing through cooperation of an electric push rod, a clamping plate, a plugging assembly on the moving plate, a pressure gauge and an air inlet pipe, the moving plate is separated from the valve and is matched with a servo motor and a lead screw, so that the valve is subjected to pressure testing, and then the valve is subjected to pressure testing; during the process, the valve after the pressure test is taken down and a new valve to be tested is replaced to wait for the pressure test, so that the continuous pressure test is realized, and the problem that the pressure test efficiency is influenced due to the fact that the existing test tool is difficult to continuously test the valve is solved.

Description

Technical Field

[0001] This utility model relates to the field of valve pressure testing technology, specifically a high-pressure butt-welded valve testing fixture. Background Technology

[0002] High-pressure weld-on valves are valves that connect to pipelines via welding, primarily used for fluid control in high-pressure and high-temperature environments. These valves are commonly used in industries such as petroleum, natural gas, chemical, metallurgy, and power generation, and are characterized by good sealing performance, low fluid resistance, and ease of operation.

[0003] The patent with publication number CN218496337U discloses a high-pressure welding end valve test fixture, which includes a base plate, a valve body and a support assembly. The support assembly includes a vertical rod, a central screw block, a screw rod, a screw plate, a top block and a magnetic suction plate. The upper surface of the base plate is fixed with two vertical rods. This device solves the problem that existing fixtures require workers to hold the valve body and align it with the pressure plate for engagement, which is time-consuming and labor-intensive.

[0004] However, the device only has a support mechanism and a pair of pressure plates on the base. This means that after testing the high-pressure welded end valve, the pressure plates need to be separated first, and then the tested valve needs to be removed and replaced with the valve to be tested. During the process of removing and placing the valve and limiting its position, the valve pressure cannot be tested again. If there are many valves to be tested, the valves need to be disassembled and installed repeatedly. This repeated process will greatly reduce the valve testing efficiency. To address this issue, a high-pressure welded end valve testing fixture is proposed to solve the problem that the existing testing fixture cannot continuously test valves, which affects the testing efficiency. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a high-pressure butt-welding end valve testing fixture, which solves the aforementioned problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure butt-welding end valve testing fixture, comprising a base, a vertical plate fixedly connected to one side of the top of the base, an electric push rod symmetrically and fixedly connected to one side of the vertical plate, two clamping plates symmetrically and slidably arranged on the top of the base, a movable groove opened on the top of the base, a movable plate slidably arranged in the inner cavity of the movable groove, sealing components provided on the opposite surfaces of the clamping plates and the movable plate, a lead screw rotatably arranged in the inner cavity of the movable groove, a servo motor fixedly connected to one end of the base, a pressure gauge provided on the top of the movable plate, an air inlet pipe provided on one side of the movable plate, and two support mechanisms symmetrically arranged on the top of the base.

[0009] Preferably, one end of the electric push rod is fixedly connected to the clamping plate, and the air intake pipe passes through the sealing assembly on the moving plate.

[0010] Preferably, the output shaft of the servo motor is fixedly connected to the lead screw, the lead screw passes through the moving plate and the two are threaded together.

[0011] Preferably, the sealing assembly includes sealing heads composed of cylindrical shapes with decreasing diameters from left to right. The sealing heads are made of a rubber material with a certain degree of elasticity, and the boundaries of the intersections of the multiple cylindrical sealing heads are chamfered.

[0012] Preferably, the support mechanism includes two U-shaped frames symmetrically and slidably disposed on the top of the base. The inner cavity of the U-shaped frame is provided with a lifting seat. The inner walls of the top two ends of the U-shaped frame are fixedly connected with a second electric push rod. A limit rod is fixedly connected to one side of the upright plate. The limit rod passes through the U-shaped frame and is slidably connected.

[0013] Preferably, the top of the second electric push rod is fixedly connected to the lifting seat, the top of the lifting seat is provided with an arc-shaped groove, and the inner cavity of the arc-shaped groove is provided with a fastening sleeve, the fastening sleeve being made of a flexible material with a certain elasticity.

[0014] Preferably, a support plate is fixedly connected to one side of the movable plate, and the bottom of the support plate is in contact with the top of the base and is slidably connected.

[0015] (III) Beneficial Effects

[0016] 1. This high-pressure welding end valve testing fixture, through the cooperation of an electric push rod with the sealing components on the clamping plate and the moving plate, as well as the pressure gauge and air inlet pipe, pressure tests the valve. After the valve is pressure tested, the moving plate is separated from the valve and, with the cooperation of a servo motor and a lead screw, the moving plate moves to the other end of the moving groove to continue pressure testing the valve. During the process, the valve after pressure testing is removed and a new valve to be tested is replaced and waits for pressure testing. This process is repeated to achieve continuous pressure testing, solving the problem that existing testing fixtures are difficult to continuously test valves, thus affecting the pressure testing efficiency.

[0017] 2. This high-pressure butt-welded valve testing fixture places the valve into the fastening sleeve in the arc-shaped groove and clamps it according to the valve's size. Then, check the position of the valve's two sides relative to the sealing assembly. Using the second electric push rod inside the U-shaped frame, adjust the lifting seat along with the valve to a suitable height. As the clamping plate moves towards the valve, the limit rod limits the movement of the U-shaped frame, facilitating the subsequent sealing of the valve using the sealing assembly and improving the ease of use of this testing work. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present utility model;

[0019] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0021] Figure 4 This is a structural diagram of the present utility model.

[0022] In the diagram: 1. Base; 2. Vertical plate; 3. Electric push rod; 4. Clamping plate; 5. Moving plate; 6. Sealing assembly; 601. Sealing head; 602. Chamfer; 7. Lead screw; 8. Servo motor; 9. Pressure gauge; 10. Air inlet pipe; 11. Support mechanism; 111. U-shaped frame; 112. Lifting seat; 113. Arc groove; 114. Fastening sleeve; 115. Second electric push rod; 116. Limiting rod; 12. Support plate; 13. Moving groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Please refer to Figure 1-4 A high-pressure butt-welded valve testing fixture includes a base 1, a vertical plate 2 fixedly connected to one side of the top of the base 1, an electric push rod 3 symmetrically and fixedly connected to one side of the vertical plate 2, two clamping plates 4 symmetrically and slidably arranged on the top of the base 1, a moving groove 13 opened on the top of the base 1, a moving plate 5 slidably arranged in the inner cavity of the moving groove 13, a sealing component 6 arranged on the opposite side of the clamping plate 4 and the moving plate 5, a lead screw 7 rotatably arranged in the inner cavity of the moving groove 13, a servo motor 8 fixedly connected to one end of the base 1, a pressure gauge 9 arranged on the top of the moving plate 5, an air inlet pipe 10 arranged on one side of the moving plate 5, and two support mechanisms 11 symmetrically arranged on the top of the base 1.

[0025] Furthermore, one end of the electric push rod 3 is fixedly connected to the clamping plate 4, and the air intake pipe 10 passes through the sealing assembly 6 on the moving plate 5.

[0026] Furthermore, the output shaft of the servo motor 8 is fixedly connected to the lead screw 7, which passes through the moving plate 5 and the two are connected by threads.

[0027] Furthermore, the sealing assembly 6 includes sealing heads 601 composed of cylindrical shapes with decreasing diameters from left to right. The sealing heads 601 are made of rubber material with a certain degree of elasticity. The intersection of the multiple cylindrical sealing heads 601 is provided with a chamfer 602. By using the sealing heads 601 composed of cylindrical shapes with decreasing diameters and the chamfer 602, the connection dimensions on both sides of the high-pressure welded valve are sealed according to the dimensions, ensuring sealing performance and improving the accuracy of subsequent pressure test results.

[0028] Furthermore, the support mechanism 11 includes two U-shaped frames 111 that are symmetrically and slidably arranged on the top of the base 1. The inner cavity of the U-shaped frame 111 is provided with a lifting seat 112. The inner walls of the top two ends of the U-shaped frame 111 are fixedly connected with a second electric push rod 115. A limit rod 116 is fixedly connected to one side of the upright plate 2. The limit rod 116 passes through the U-shaped frame 111 and is slidably connected.

[0029] Furthermore, the top of the second electric push rod 115 is fixedly connected to the lifting seat 112. The top of the lifting seat 112 is provided with an arc-shaped groove 113. The inner cavity of the arc-shaped groove 113 is provided with a fastening sleeve 114. The fastening sleeve 114 is made of a flexible material with a certain elasticity. The high-pressure welding end valve is placed into the fastening sleeve 114 in the arc-shaped groove 113 and then clamped according to the size of the valve. Then, the positions of the valve and the sealing assembly 6 are checked. The second electric push rod 115 in the U-shaped frame 111 is used to adjust the lifting seat 112 and the valve to a suitable height. As the clamping plate 4 moves toward the valve, the limit rod 116 limits the movement of the U-shaped frame 111, which facilitates the subsequent sealing of the valve by the sealing assembly 6, thus improving the convenience of the test.

[0030] Furthermore, a support plate 12 is fixedly connected to one side of the movable plate 5. The bottom of the support plate 12 is in contact with the top of the base 1 and is slidably connected. During the process of the clamping plate 4 moving towards the movable plate 5 and sealing both sides of the valve using the sealing assembly 6, the movable plate 5 will be subjected to pressure to the right. The support plate 12 can support the movable plate 5, thereby improving the stability during the sealing and pressure testing process.

[0031] Working principle: When using this high-pressure welding end valve testing fixture, after limiting and adjusting both valves to be tested to the appropriate position using the support mechanism 11, the electric push rod 3 is activated to seal both sides of the valve with the sealing components 6 on the clamping plate 4 and the moving plate 5. After applying pressure with the air inlet pipe 10 and the pressure gauge 9, the moving plate 5 is separated from the valve and moved to the other end of the moving groove 13 with the help of the servo motor 8 and the lead screw 7, so that the moving plate 5 continues to test the valve. During the process, the tested valve is removed and replaced with a new valve to be tested. This process is repeated to achieve continuous pressure testing, which solves the problem that existing testing fixtures are difficult to continuously test valves, thus affecting the efficiency of pressure testing.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] 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 high pressure butt welded end valve testing fixture comprising a base (1) characterised in that: The top side of the base (1) is fixedly connected with a vertical plate (2), one side of the vertical plate (2) is symmetrically and fixedly connected with an electric push rod (3), the top of the base (1) is symmetrically and slidably provided with two clamping plates (4), the top of the base (1) is provided with a moving groove (13), the inner cavity of the moving groove (13) is slidably provided with a moving plate (5), the opposite surfaces of the clamping plate (4) and the moving plate (5) are provided with a blocking assembly (6), the inner cavity of the moving groove (13) is rotatably provided with a lead screw (7), one end of the base (1) is fixedly connected with a servo motor (8), the top of the moving plate (5) is provided with a pressure gauge (9), one side of the moving plate (5) is provided with an air inlet pipe (10), and the top of the base (1) is symmetrically provided with two supporting mechanisms (11).

2. The high pressure butt welded end valve test fixture of claim 1, wherein: One end of the electric push rod (3) is fixedly connected with the clamping plate (4), and the air inlet pipe (10) penetrates the blocking assembly (6) on the moving plate (5).

3. The high pressure butt welded end valve test fixture of claim 1, wherein: The output shaft of the servo motor (8) is fixedly connected with the lead screw (7), the lead screw (7) penetrates the moving plate (5) and is screw-connected therewith.

4. The high pressure butt welded end valve test fixture of claim 1, wherein: The blocking assembly (6) comprises a blocking head (601) composed of cylinders with diameters decreasing from left to right, the blocking head (601) is made of rubber material with a certain elasticity, and the intersection boundaries of the plurality of cylindrical blocking heads (601) are provided with chamfers (602).

5. The high pressure butt welded end valve test fixture of claim 1, wherein: The supporting mechanism (11) comprises two U-shaped frames (111) symmetrically and slidably arranged on the top of the base (1), the inner cavities of the U-shaped frames (111) are provided with lifting seats (112), the top two ends of the U-shaped frames (111) are fixedly connected with second electric push rods (115), one side of the vertical plate (2) is fixedly connected with a limiting rod (116), and the limiting rod (116) penetrates the U-shaped frame (111) and is slidably connected therewith.

6. A high pressure butt welded end valve test fixture as defined in claim 5, wherein: The top of the second electric push rod (115) is fixedly connected with the lifting seat (112), the top of the lifting seat (112) is provided with an arc-shaped groove (113), the inner cavity of the arc-shaped groove (113) is provided with a fastening sleeve pad (114), and the fastening sleeve pad (114) is made of flexible material with a certain elasticity.

7. The high pressure butt welded end valve test fixture of claim 1, wherein: One side of the moving plate (5) is fixedly connected with a supporting plate (12), and the bottom of the supporting plate (12) is attached to the top of the base (1) and is slidably connected therewith.

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