Pipeline valve inner leakage detection equipment

Abstract

The utility model relates to the technical field of pipeline detection, in particular to pipeline valve inner leakage detection equipment, which comprises a driving assembly, a clamping assembly for clamping the upper end of a pipeline, and a fixing assembly for fixing the lower end of the pipeline, the clamping assembly comprises a fixing plate, a second motor fixedly installed on the fixing plate, a first clamping jaw fixedly connected to the output end of the second motor, and a second clamping jaw engaged with the first clamping jaw. According to the pipeline valve inner leakage detection equipment, when angle adjustment needs to be carried out on pipeline detection, a worker pulls down a driving rod to drive a second motor to rotate, a limiting block is in sliding connection with a fixed shell, and a spring provides elastic force, so that when a clamping jaw tries to exceed a preset moving range, the second motor is driven to rotate; and the limiting block can be in tight contact with the limiting wheel under the action of the spring and is clamped into the clamping groove of the limiting wheel, so that the pipeline with the adjusted angle is fixed.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection technology, specifically to a pipeline valve internal leakage detection device. Background Technology

[0002] Valves are crucial fluid control devices and pressure-bearing components in pipelines. Pressure testing is a vital part of their production process and an important means of performance evaluation. Among these, the detection of micro-leakage during gas tightness testing has long been a challenge for the entire industry. Typically, pipeline valves installed and used on construction sites require tightness testing to achieve "zero" leakage. This is because if leakage occurs during use, replacing the valve is cumbersome and difficult, usually requiring significant manpower and resources. Internal leakage in valves is mainly caused by deformation of the sealing surface at low temperatures. When the medium temperature drops to a point where the material undergoes a phase change, volume changes occur, causing the originally highly precision-ground sealing surface to warp and deform, resulting in poor low-temperature sealing.

[0003] However, in pipeline inspection, internal leakage of valves is usually detected using an ultrasonic metal detector. This method requires the operator to hold the detector and walk around the valve being tested. During the test, the position of the ultrasonic detector is prone to shift, which affects the accuracy of the test.

[0004] Utility model application CN202223461164.3 relates to the field of pipeline valve technology, specifically a pipeline valve internal leakage detection device. It includes a strip box with a moving mechanism inside, a detector mounted on the moving mechanism, and a clamping mechanism on the side of the strip box. The moving mechanism includes a first limiting groove, within which a slider is slidably disposed, and the slider is fixedly connected to the detector. This utility model, by incorporating the moving mechanism, facilitates the adjustment of the detector's position, enabling internal leakage detection at different locations on pipeline valves. The clamping mechanism facilitates the clamping of pipeline valves of different sizes, allowing for internal leakage detection of valves of varying sizes, avoiding the need for operators to manually hold the detector, and improving detection accuracy.

[0005] The aforementioned patent only clamps the pipe to prevent it from shaking and affecting the detection accuracy, but it cannot ensure a closer and more accurate contact between the detection instrument or probe and the inner wall of the pipe by adjusting the angle of the pipe, and therefore cannot capture more precise leakage signals.

[0006] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0007] The purpose of this utility model is to provide a pipeline valve internal leakage detection device that can effectively solve the above-mentioned technical problems.

[0008] To achieve the purpose of this utility model, the following technical solution is adopted:

[0009] A pipeline valve internal leakage detection device includes: a driving component, a clamping component for clamping the upper end of the pipeline, and a fixing component for fixing the lower end of the pipeline.

[0010] The clamping assembly includes a fixed plate, a second motor fixedly mounted on the fixed plate, a first gripper fixedly connected to the output end of the second motor, a second gripper meshing with the first gripper, a drive rod fixedly mounted on the housing of the second motor, a limit wheel fixedly mounted on the fixed plate, and a retainer fixedly mounted on the side of the drive rod.

[0011] The fixture consists of a limiting block, a spring, and a fixing shell; the limiting block is fixedly connected to the spring, the spring is fixedly connected to the fixing shell, and the limiting block is slidably connected to the fixing shell.

[0012] Furthermore, the fixing assembly includes an arc-shaped plate, an arc-shaped rod fixedly installed on the inner wall of the arc-shaped plate, a mounting plate slidably installed on the arc-shaped rod, a fixing block fixedly installed on the mounting plate, a third motor fixedly installed on the side of the fixing block, and a bidirectional screw fixedly installed on the output shaft of the third motor. The surface of the bidirectional screw is provided with two sets of reverse threads, and the surface of the bidirectional screw is provided with two sets of clamping claws. The two sets of clamping claws are respectively connected to the two sets of threads on the bidirectional threads.

[0013] Furthermore, the arc-shaped plate is fixedly mounted with a housing.

[0014] Furthermore, the drive assembly consists of a first motor, a threaded rod, and a limiting rod; the output shaft of the first motor is fixedly connected to the threaded rod, the threaded rod is threadedly connected to the fixed plate, and the limiting rod passes through the fixed plate and the housing.

[0015] Furthermore, the surface of the limiting wheel is provided with multiple slots, and the adjacent distance between each slot is consistent with the short side distance of the limiting block.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention is a pipeline valve internal leakage detection device. When the pipeline needs to be inspected and the angle needs to be adjusted, the operator pulls down the drive rod to drive the second motor to rotate. Since the limit block is slidably connected to the fixed shell and the spring provides elasticity, when the gripper attempts to exceed the preset movement range, the limit block will be in close contact with the limit wheel under the action of the spring and will be locked into its slot to fix the pipeline after the angle is adjusted. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the structure of a pipeline valve internal leakage detection device according to the present invention;

[0019] Figure 2 This is a cross-sectional view of a pipeline valve internal leakage detection device according to the present invention;

[0020] Figure 3 This is a schematic diagram of the clamping assembly of a pipeline valve internal leakage detection device according to the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the fixture for a pipeline valve internal leakage detection device according to the present invention;

[0022] Figure 5 This is a schematic diagram of the fixing assembly of the buffer component of a pipeline valve internal leakage detection device according to the present invention.

[0023] In the diagram: 1. Drive assembly; 11. First motor; 12. Threaded rod; 13. Limiting rod; 2. Housing; 3. Clamping assembly; 31. Fixing plate; 32. Second motor; 33. First gripper; 34. Second gripper; 35. Drive rod; 36. Limiting wheel; 37. Fixer; 371. Limiting block; 372. Spring; 373. Fixing shell; 4. Fixing assembly; 41. Arc plate; 42. Arc rod; 43. Mounting plate; 44. Fixing block; 45. Third motor; 46. Bidirectional screw; 47. Clamping claw. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. When a mechanism is referred to as being "fixed to" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected" to another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism at the same time. When a mechanism is considered to be "set on" another mechanism, it can be directly set on the other mechanism or there may be an intervening mechanism at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0026] like Figures 1 to 5 As shown, a pipeline valve internal leakage detection device includes: a driving component 1, a clamping component 3 for clamping the upper end of the pipeline, and a fixing component 4 for fixing the lower end of the pipeline.

[0027] Acoustic leak detection methods track the location of leaks by detecting the differential pressure at the leak point and utilizing the propagation properties of sound. When a pipeline ruptures, the friction between the transported medium and the pipe wall generates sound wave vibrations, which propagate at high speed upstream and downstream along the fluid within the pipeline. By capturing and analyzing these sound wave signals, the leak area can be effectively identified, laying the foundation for subsequent precise location.

[0028] The drive assembly 1 consists of a first motor 11, a threaded rod 12, and a limiting rod 13. The output shaft of the first motor 11 is fixedly connected to the threaded rod 12, and the threaded rod 12 is threadedly connected to the fixed plate 31. The limiting rod 13 passes through the fixed plate 31 and the housing 2. When the first motor 11 starts, its output shaft begins to rotate, driving the threaded rod 12, which is fixedly connected to it, to rotate together. Because the threaded rod 12 and the fixed plate 31 are connected by a thread, when the threaded rod 12 rotates, the fixed plate 31 will move along the axial direction of the threaded rod 12. At the same time, the presence of the limiting rod 13 ensures the stability and accuracy of the fixed plate 31 during movement. Pipes of different lengths can be fixedly clamped by the clamping assembly 3.

[0029] The clamping assembly 3 includes a fixed plate 31, a second motor 32 fixedly mounted on the fixed plate 31, a first gripper 33 fixedly connected to the output end of the second motor 32, a second gripper 34 meshing with the first gripper 33, a drive rod 35 fixedly mounted on the housing of the second motor 32, a limiting wheel 36 fixedly mounted on the fixed plate 31, and a retainer 37 fixedly mounted on the side of the drive rod 35. When the second motor 32 is started, its output end begins to rotate, driving the first gripper 33 fixedly connected to it to move. Because there is a meshing relationship between the first gripper 33 and the second gripper 34, when the first gripper 33 moves, the second gripper 34 will move in the opposite direction. This relative movement allows the grippers to clamp or release objects, while the retainer 37 can fix the angle of the second motor 32 to prevent the second motor 32 from shaking.

[0030] As a supplement: the fixture 37 consists of a limiting block 371, a spring 372, and a fixing shell 373; the limiting block 371 is fixedly connected to the spring 372, the spring 372 is fixedly connected to the fixing shell 373, the limiting block 371 is slidably connected to the fixing shell 373, and the surface of the limiting wheel 36 is provided with multiple slots, and the adjacent distance between each slot is consistent with the short side distance of the limiting block 371; when the angle of the pipeline inspection needs to be adjusted, the operator pulls down the drive rod 35 to drive the second motor 32 to rotate. Since the limiting block 371 is slidably connected to the fixing shell 373, and the spring 372 provides elasticity, when the gripper attempts to exceed the preset movement range, the limiting block 371 will contact the limiting wheel 36 tightly under the action of the spring 372 and be locked into its slot.

[0031] It should be noted that the surface of the limiting wheel 36 has multiple slots, and the distance between adjacent slots is consistent with the short side distance of the limiting block 371. This means that when the limiting block 371 is engaged in a slot, it can only move within the range of that slot. If the gripper continues to attempt to move beyond this range, the limiting block 371 will be resisted by the limiting wheel 36, and the force will be transmitted to the entire retainer 37 through the spring 372, thereby preventing further movement of the gripper. However, when the applied force exceeds the resistance, the limiting block 371 will cross the slot and engage in the next slot.

[0032] The fixing assembly 4 includes an arc-shaped plate 41, an arc-shaped rod 42 fixedly installed on the inner wall of the arc-shaped plate 41, a mounting plate 43 slidably installed on the arc-shaped rod 42, a fixing block 44 fixedly installed on the mounting plate 43, a third motor 45 fixedly installed on the side of the fixing block 44, and a bidirectional screw 46 fixedly installed on the output shaft of the third motor 45. The bidirectional screw 46 has two sets of reverse threads on its surface and two sets of clamping claws 47 on its surface. The two sets of clamping claws 47 are respectively connected to the two sets of threads on the bidirectional threads. When the third motor 45 is started, its output shaft begins to rotate, driving the bidirectional screw 46 to rotate together. Because the bidirectional screw 46 has two sets of reverse threads on its surface, when the bidirectional screw 46 rotates, the two sets of clamping claws 47 will move along different thread directions respectively. This relative or opposite movement allows the gripper 47 to grip or release the object. After clamping the pipe, the pipe rotates synchronously due to the rotation of the retainer 37 on the limit wheel 36. At this time, the bottom of the pipe is supported by the mounting plate 43, and the pipe angle rotates, causing the mounting plate 43 to slide on the arc rod 42, which facilitates the movement of the pipe position. At the same time, the pipe can maintain the stability of the bottom and top of the pipe being tested at different angles.

[0033] Adjusting the pipe angle ensures a tighter and more accurate contact between the detection instrument or probe and the pipe's inner wall. This tight contact helps capture more precise leak signals, thus improving detection accuracy. Conversely, an improper pipe angle can prevent the detection instrument from accurately detecting leak signals, leading to false alarms or missed detections. Adjusting the pipe angle ensures the detection instrument can correctly capture leak characteristics, thereby reducing the risk of false alarms and missed detections.

[0034] Working principle:

[0035] When the first motor 11 starts, its output shaft begins to rotate, driving the threaded rod 12 fixedly connected to it to rotate together. When the second motor 32 starts, its output end begins to rotate, driving the first gripper 33 fixedly connected to it to move. When the first gripper 33 moves, the second gripper 34 will move in the opposite direction, so that the gripper can clamp or release the object. When the third motor 45 starts, its output shaft begins to rotate, driving the bidirectional screw 46 to rotate together. Since the surface of the bidirectional screw 46 has two sets of reverse threads, when the bidirectional screw 46 rotates, the two sets of clamping claws 47 will move along different thread directions, so that the clamping claws 47 can clamp or release objects. When the angle of the pipeline inspection needs to be adjusted, the operator pulls down the drive rod 35 to drive the second motor 32 to rotate. Since the limit block 371 is slidably connected to the fixed shell 373 and the spring 372 provides elasticity, when the clamping claw attempts to exceed the preset movement range, the limit block 371 will be in close contact with the limit wheel 36 under the action of the spring 372 and be stuck in its slot.

[0036] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A device for detecting internal leakage in pipeline valves, characterized in that, include: A drive assembly, a clamping assembly for clamping the upper end of the pipe, and a fixing assembly for fixing the lower end of the pipe; The clamping assembly includes a fixed plate, a second motor fixedly mounted on the fixed plate, a first gripper fixedly connected to the output end of the second motor, a second gripper meshing with the first gripper, a drive rod fixedly mounted on the housing of the second motor, a limit wheel fixedly mounted on the fixed plate, and a retainer fixedly mounted on the side of the drive rod. The fixture consists of a limiting block, a spring, and a fixing shell; the limiting block is fixedly connected to the spring, the spring is fixedly connected to the fixing shell, and the limiting block is slidably connected to the fixing shell.

2. The pipeline valve internal leakage detection device as described in claim 1, characterized in that, The fixing assembly includes an arc-shaped plate, an arc-shaped rod fixedly installed on the inner wall of the arc-shaped plate, a mounting plate slidably installed on the arc-shaped rod, a fixing block fixedly installed on the mounting plate, a third motor fixedly installed on the side of the fixing block, and a bidirectional screw fixedly installed on the output shaft of the third motor. The surface of the bidirectional screw is provided with two sets of reverse threads, and the surface of the bidirectional screw is provided with two sets of clamping claws. The two sets of clamping claws are respectively connected to the two sets of threads on the bidirectional threads.

3. The pipeline valve internal leakage detection device as described in claim 2, characterized in that, The arc-shaped plate is fixedly mounted with the organic shell.

4. The pipeline valve internal leakage detection device as described in claim 1, characterized in that, The drive assembly consists of a first motor, a threaded rod, and a limiting rod; the output shaft of the first motor is fixedly connected to the threaded rod, the threaded rod is threadedly connected to the fixed plate, and the limiting rod passes through the fixed plate and the housing.

5. The pipeline valve internal leakage detection device as described in claim 1, characterized in that, The surface of the limiting wheel is provided with multiple slots, and the adjacent distance between each slot is consistent with the short side distance of the limiting block.

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