Ball valve air-tight seal detection tool

Abstract

The utility model discloses a ball valve airtightness detection frock, including operation platform, its top both sides are equipped with mounting bracket, and there is mobile screw rod in the frame, and the mobile fixed assembly is installed on the screw rod, and the frame top fixed detection gas chamber, and the mobile fixed assembly includes mobile sleeve pipe, and the sleeve pipe is connected telescopic air cylinder, and the air cylinder end has telescopic block, and the block bottom has auxiliary moving assembly, and one end has connecting plate, and the detection gas chamber is connected gas pipe, and the gas pipe passes connecting plate, and the end installs butt joint assembly, and the both sides components are fixed ball valve, and the gas pipe is led into ball valve, and is detected through external equipment, and butt joint assembly uses different models butt joint disc, and is spirally connected through the thread head and gas pipe, and can be adapted to different specifications ball valve, and mobile screw rod is driven by motor, and can automatically adjust mobile fixed assembly position, and telescopic air cylinder drives telescopic block to remove, and is convenient for ball valve to assemble and disassemble, and detection gas chamber is fixed through the support frame with reinforcing rib, and enhances structural stability.

Description

Technical Field

[0001] This utility model specifically relates to a ball valve air tightness testing fixture. Background Technology

[0002] Ball valves, as key components in industrial pipeline systems, are widely used in numerous industries such as petroleum refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, power, municipal engineering, and steel, occupying an extremely important position in the national economy. Their main function is to cut off, distribute, and change the flow direction of media. Therefore, the airtightness of ball valves directly affects the safe and stable operation of the entire system. Leakage can lead to serious safety accidents and economic losses. Thus, rigorous airtightness testing before ball valves leave the factory is a necessary step to ensure product quality and safe operation.

[0003] The common testing method currently involves using power components such as cylinders or hydraulic rods to drive clamping plates, clamping the ball valve from both ends, and then introducing gas into the ball valve to test its airtightness. However, this fixing method has many drawbacks. If the clamping force is not properly controlled, excessive clamping force can easily cause the ball valve to deform or even be damaged, seriously affecting product quality; conversely, if the clamping force is too small, the ball valve is prone to moving or falling during the testing process, not only affecting the accuracy of the test results but also potentially causing equipment damage and safety hazards. Furthermore, this type of fixing fixture is ineffective when dealing with ball valves of different sizes, easily affecting the testing results.

[0004] Therefore, it is necessary to invent a ball valve air seal testing tool to solve the above problems. Utility Model Content

[0005] (a) Purpose of the utility model

[0006] To address the technical problems existing in the background art, this utility model proposes a ball valve air seal testing fixture, which can quickly and stably fix the ball valve and can be adjusted according to the size of the ball valve.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a ball valve gas seal testing fixture, including an operating table, mounting frames on both sides of the top of the operating table, a movable lead screw installed inside the mounting frame, a movable fixing component installed on the movable lead screw, and a testing gas chamber fixed on the top of the mounting frame;

[0009] The movable fixing component includes a movable sleeve, a telescopic cylinder is connected to the outside of the movable sleeve, a telescopic block extends from the end of the telescopic cylinder, an auxiliary movable component is provided at the bottom of the telescopic block, and a connecting plate extends upward from one end of the telescopic block.

[0010] One side of the detection chamber is connected to an air pipe. One end of the air pipe passes through the connecting plate and extends to the other side. A docking assembly is installed at the end of the air pipe. A ball valve is fixed between the docking assemblies on both sides. The air pipe passes into the ball valve and is detected by an external airtight device.

[0011] Preferably, the moving lead screw is controlled by a motor inside the operating table, the connecting plate is provided with a mounting hole for installing the air pipe, and the end of the air pipe is connected to a threaded head, while the other parts are all flexible hoses. The threaded head is made of metal and is partially placed inside the mounting hole, that is, the threaded head is perpendicular to the surface of the connecting plate, and the docking assembly is spirally connected to the threaded head.

[0012] Preferably, the docking assembly includes docking discs of different models, and a fixing hole is provided in the center of a plurality of docking discs. The fixing hole is connected and fixed to the threaded head. The docking disc is also provided with a plurality of concentrically arranged docking holes. The docking holes are matched with the docking flanges on both sides of the ball valve and connected with a plurality of fastening bolts, that is, the ball valve is fixed between the docking discs on both sides.

[0013] Preferably, the bottom of the detection chamber is provided with a support frame, the support frame is fixed to the top of the mounting frame, and the bottom sides of the support frame are provided with reinforcing ribs on both sides of the mounting frame.

[0014] Preferably, the auxiliary moving component includes an arc-shaped groove disposed at the bottom of the telescopic block, with fixed blocks at both ends of the arc-shaped groove, a fixed shaft between the fixed blocks, and multiple rollers mounted on the fixed shaft.

[0015] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are:

[0016] 1. The docking assembly of this utility model adopts different models of docking discs and is spirally connected to the air pipe through the threaded head. The matching docking discs can be flexibly replaced according to the specifications of the ball valve, which can meet the testing needs of ball valves of different models and sizes.

[0017] 2. The movable lead screw of this utility model is driven by a motor, which can automatically adjust the position of the movable fixed component, reducing the workload of manual adjustment; the telescopic cylinder drives the telescopic block to move, which can flexibly adjust the distance between the docking component and the ball valve, facilitating the quick installation and removal of the ball valve.

[0018] 3. The detection chamber of this utility model is fixed to the top of the mounting frame by a support frame, and the support frame is provided with reinforcing ribs on both sides, which enhances the load-bearing capacity and stability of the overall structure, effectively reduces vibration or deformation during the detection process, and ensures long-term stable operation of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

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

[0021] Figure 2 This is a partial structural breakdown diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the disassembled structure of the movable fixing component and the detection air chamber of this utility model;

[0023] Figure 4 This is a schematic diagram of the bottom structure of the movable fixing component of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Operating table; 11. Mounting bracket; 12. Moving lead screw; 2. Moving and fixing assembly; 21. Moving sleeve; 22. Telescopic cylinder; 23. Telescopic block; 24. Connecting plate; 25. Mounting hole; 3. Detection air chamber; 31. Air pipe; 32. Threaded head; 33. Support frame; 34. Reinforcing rib; 4. Auxiliary moving assembly; 41. Arc groove; 42. Fixing block; 43. Fixing shaft; 44. Roller; 5. Connecting assembly; 51. Connecting plate; 52. Fixing hole; 53. Connecting hole; 54. Fastening bolt; 6. Ball valve. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figure 1-4 The ball valve gas seal testing fixture shown includes an operating table 1, with mounting brackets 11 on both sides of the top of the operating table 1. A movable screw 12 is installed inside the mounting bracket 11, and a movable fixing component 2 is installed on the movable screw 12. A testing gas chamber 3 is also fixed on the top of the mounting bracket 11.

[0028] In this embodiment, a comprehensive inspection of the equipment is required before using the ball valve gas seal testing fixture. First, confirm that the operating table 1 is placed stably and that the mounting bracket 11 is securely connected to the operating table 1 without any looseness. Check the lubrication of the moving lead screw 12 to ensure it can rotate freely under motor drive, and verify the motor's operating status to ensure stable output power. Perform a sealing check on the testing gas chamber 3, checking for damage, aging, or other problems with the gas pipe 31 to ensure the gas transmission channel is unobstructed.

[0029] Specifically, the movable fixing component 2 includes a movable sleeve 21, a telescopic cylinder 22 is connected to the outside of the movable sleeve 21, a telescopic block 23 extends from the end of the telescopic cylinder 22, an auxiliary movable component 4 is provided at the bottom of the telescopic block 23, and a connecting plate 24 extends upward from one end of the telescopic block 23.

[0030] Specifically, a gas pipe 31 is connected to one side of the detection chamber 3. One end of the gas pipe 31 passes through the connecting plate 24 and extends to the other side. A docking assembly 5 is installed at the end of the gas pipe 31. A ball valve 6 is fixed between the docking assemblies 5 on both sides. The gas pipe 31 passes into the ball valve 6 and is detected by an external airtight device.

[0031] In this embodiment, a matching mating plate 51 is selected according to the model of the ball valve 6 to be tested. Since the fixing hole 52 in the center of the mating plate 51 can be screwed to the threaded head 32 at the end of the air pipe 31, the selected mating plate 51 is installed on the threaded head 32 of the air pipes 31 on both sides respectively, and tightened to prevent gas leakage. The control motor of the moving screw 12 is started, so that the moving fixing component 2 moves on the moving screw 12, and the distance between the two connecting plates 24 is adjusted to match the length of the ball valve 6. The telescopic cylinder 22 is operated to extend the telescopic block 23. At this time, the auxiliary moving component 4 at the bottom of the telescopic block 23 plays a role, and the roller 44 in the arc groove 41 rolls on the top of the operating table 1, and the auxiliary telescopic block 23 moves smoothly. Place the ball valve 6 between the two mating plates 51, aligning the mating flanges on both sides of the ball valve 6 with the mating holes 53 on the mating plates 51. Then, use the fastening bolts 54 to fix the ball valve 6 to the mating plates 51, ensuring a tight connection and preventing gas leakage during the testing process.

[0032] In this embodiment, an external airtight device is connected to the detection chamber 3. The switch of the airtight device is turned on, allowing gas to enter the ball valve 6 through the gas pipe 31. The detection chamber 3 and related connection points are observed for signs of gas leakage, such as the generation of air bubbles or the stability of the pressure gauge reading. If a leak is detected, the test must be stopped immediately. The connection between the mating plate 51 and the ball valve 6 must be checked for tightness, and the gas pipe 31 must be inspected for damage. After appropriate repairs and adjustments, the test is repeated. If no leak is detected, gas is continuously introduced for a period of time, and the pressure gauge reading is recorded. The pressure changes are used to determine whether the airtight performance of the ball valve 6 meets the requirements.

[0033] In this embodiment, after the test is completed, the external airtight equipment is shut off, and the gas supply is stopped. The fastening bolts 54 are loosened, and the ball valve 6, whether it passes or fails the test, is removed from the mating plate 51. The telescopic cylinder 22 is operated to retract the telescopic block 23, and then the moving and fixing assembly 2 is reset via the control motor of the moving screw 12. The tooling equipment is cleaned and tidied, and all components are checked for damage to prepare for the next test.

[0034] Specifically, the moving lead screw 12 is controlled by the motor inside the operating table 1. The connecting plate 24 is provided with a mounting hole 25 for installing the air pipe 31, and the end of the air pipe 31 is connected to a threaded head 32. The rest of the parts are all hoses. The threaded head 32 is metal and part of it is placed inside the mounting hole 25. That is, the threaded head 32 is perpendicular to the surface of the connecting plate 24. The docking assembly 5 is spirally connected to the threaded head 32.

[0035] Specifically, the docking assembly 5 includes docking discs 51 of different models. Multiple docking discs 51 have fixing holes 52 in the center. The fixing holes 52 are connected and fixed to the threaded head 32. The docking discs 51 also have multiple concentrically arranged docking holes 53. The docking holes 53 match the docking flanges on both sides of the ball valve 6 and are connected with multiple fastening bolts 54, that is, the ball valve 6 is fixed between the docking discs 51 on both sides.

[0036] Specifically, the bottom of the detection chamber 3 is provided with a support frame 33, which is fixed to the top of the mounting frame 11, and the bottom sides of the support frame 33 are provided with reinforcing ribs 34 on both sides of the mounting frame 11.

[0037] Specifically, the auxiliary moving component 4 includes an arc-shaped groove 41 at the bottom of the telescopic block 23, with fixed blocks 42 at both ends inside the arc-shaped groove 41, a fixed shaft 43 between the fixed blocks 42, and multiple rollers 44 mounted on the fixed shaft 43.

[0038] In this embodiment, the tooling, through the cooperation of the movable lead screw 12 and the telescopic cylinder 22, can quickly adjust the position of the docking components 5 on both sides, adapting to ball valves 6 of different lengths and models, greatly shortening the installation and debugging time of the ball valves and improving the testing efficiency. At the same time, the rollers 44 of the auxiliary moving component 4 reduce the friction when the telescopic block 23 moves, making the operation more convenient and faster.

[0039] In this embodiment, the docking assembly 5 uses docking plates 51 of different models, and the docking holes 53 on the docking plates 51 are precisely matched with the docking flanges on both sides of the ball valve 6. After being fixed by the fastening bolts 54, the sealing connection between the ball valve 6 and the air pipe 31 can be guaranteed, reducing the detection error caused by improper connection and improving the accuracy of air seal detection.

[0040] In this embodiment, the support frame 33 and reinforcing rib 34 at the bottom of the detection chamber 3 enhance the structural stability of the detection chamber 3, making it less prone to shaking during the detection process and ensuring stable gas transmission. The moving lead screw 12 is controlled by a motor, ensuring smooth operation and accurate and reliable adjustment of the position of the moving fixed component 2, further improving the stability of the detection process.

[0041] In this embodiment, since the docking assembly 5 can be replaced with different models of docking discs 51, the tooling can meet the gas seal testing requirements of various models of ball valves, has strong versatility, and reduces the cost for enterprises to purchase multiple sets of equipment for testing different models of ball valves.

[0042] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A ball valve gas seal testing fixture, characterized in that: The system includes an operating table (1), with mounting brackets (11) on both sides of the top of the operating table (1). A movable lead screw (12) is installed inside the mounting bracket (11), and a movable fixing component (2) is installed on the movable lead screw (12). A detection gas chamber (3) is also fixed on the top of the mounting bracket (11). The movable fixing component (2) includes a movable sleeve (21), a telescopic cylinder (22) is connected to the outside of the movable sleeve (21), a telescopic block (23) extends from the end of the telescopic cylinder (22), an auxiliary movable component (4) is provided at the bottom of the telescopic block (23), and a connecting plate (24) extends upward from one end of the telescopic block (23). One side of the detection chamber (3) is connected to an air pipe (31). One end of the air pipe (31) passes through the connecting plate (24) and extends to the other side. A docking assembly (5) is installed at the end of the air pipe (31). A ball valve (6) is fixed between the docking assemblies (5) on both sides. The air pipe (31) passes into the ball valve (6) and is detected by an external airtight device.

2. The ball valve gas seal testing fixture according to claim 1, characterized in that: The moving lead screw (12) is controlled by the motor inside the operating table (1). The connecting plate (24) is provided with a mounting hole (25) for installing the air pipe (31). The end of the air pipe (31) is connected to a threaded head (32), and the other parts are all hoses. The threaded head (32) is metal and part of it is placed in the mounting hole (25). That is, the threaded head (32) is perpendicular to the surface of the connecting plate (24). The docking assembly (5) is spirally connected to the threaded head (32).

3. The ball valve gas seal testing fixture according to claim 2, characterized in that: The docking assembly (5) includes docking discs (51) of different models. Each docking disc (51) has a fixing hole (52) in the center. The fixing hole (52) is connected and fixed to the threaded head (32). The docking disc (51) also has a plurality of concentrically arranged docking holes (53). The docking holes (53) match the docking flanges on both sides of the ball valve (6) and are connected with a plurality of fastening bolts (54), that is, the ball valve (6) is fixed between the docking discs (51) on both sides.

4. The ball valve gas seal testing fixture according to claim 1, characterized in that: The bottom of the detection chamber (3) is provided with a support frame (33), which is fixed to the top of the mounting frame (11), and the bottom sides of the support frame (33) are provided with reinforcing ribs (34) on both sides of the mounting frame (11).

5. The ball valve gas seal testing fixture according to claim 1, characterized in that: The auxiliary moving component (4) includes an arc-shaped groove (41) at the bottom of the telescopic block (23), with fixed blocks (42) at both ends of the arc-shaped groove (41), and a fixed shaft (43) between the fixed blocks (42), and multiple rollers (44) mounted on the fixed shaft (43).

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