Universal pipeline system leakage test tool

Abstract

The utility model discloses a universal pipeline system leakage test tool. The first plugging device is in sealed connection with a first connector at one end of the pipeline system, the second plugging device is in sealed connection with a second connector at the other end of the pipeline system, and the adjusting device is used for adjusting the position of the first plugging device so as to adapt to the pipeline system at different angles. The adjusting device comprises an adjusting base, an adjusting arm and a supporting rod, wherein one end of the adjusting arm is rotationally arranged on the adjusting base, and the supporting rod is movably arranged at the other end of the adjusting arm and used for supporting the first plugging device. The tool can adapt to pipeline systems at different angles and in different directions, is good in universality, reduces the development cost and the remodeling time of the tool, improves the test efficiency, and reduces the production cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline testing, and particularly relates to a universal pipeline system leakage testing tooling.

Background Art

[0002] For the fuel pipeline of an automobile, the most important function of the fuel pipeline is to transport fuel from the automobile fuel tank to the engine. If fuel leaks, there will be a risk of combustion or even explosion during the operation of the automobile. Therefore, at present, during the production process of fuel pipeline systems by manufacturers, leakage tests are carried out on the fuel pipeline systems. The basic principle of the leakage test is to fill the pipeline with gas to a certain pressure, maintain it for a period of time, and test the pressure in the pipeline. If there is a leak, the pressure will decrease, and the instrument judges whether there is a leak based on the pressure difference.

[0003] In the prior art, there are test devices designed for the leakage test of pipeline systems. For example, the leakage test device for an automobile fuel pipeline system disclosed in Chinese Patent Publication No. CN209131908U includes a tooling assembly. The tooling assembly includes a base plate and at least one set of tooling mounted on the base plate. The tooling includes a number of mounting seats, and each mounting seat is provided with an interface. Each of the interfaces is connected to each joint of the fuel pipeline to be detected in a one-to-one correspondence. Each interface is correspondingly provided with an automatic locking mechanism, and each automatic locking mechanism can lock or unlock a corresponding set of interfaces and joints. Another example is a test device disclosed in Chinese Patent Publication No. CN108593222A, which includes a fixed tooling, including a first plugging device, a second plugging device, and a fixing device. An exhaust passage is provided on the first plugging device. The first plugging device is hermetically connected to the oil outlet end of the oil pipe, and the air inlet of the exhaust passage is communicated with the oil outlet end. In the above two patents, the interfaces or plugging devices provided on the test tooling are all arranged in a one-to-one imitation correspondence with the pipeline, and can only test pipelines with the same joints at both ends. If the joints at both ends of the pipeline are changed, the tooling needs to be replaced for testing, and the versatility is low. Moreover, the above two test devices place the pipeline on the tooling for testing. However, if the pipeline is in different positions or at different angles after assembly, due to the large volume of the above test devices, it is difficult to move and transport them to cooperate with the pipeline test. Moreover, the above test devices can only test pipelines with a single shape and at a single angle. Therefore, the test devices of the above solutions cannot be used for leakage testing.

[0004] Therefore, it is necessary to provide a universal pipeline system leakage testing tooling to solve the above technical problems.

Content of the Utility Model

[0005] The main object of the present utility model is to provide a general-purpose pipeline system leakage test tooling, which can adapt to pipeline systems at different angles and different orientations, has good versatility, reduces the development cost and changeover time of the tooling, improves the test efficiency and reduces the production cost.

[0006] The present utility model realizes the above object through the following technical solutions: a general-purpose pipeline system leakage test tooling, which includes a first plugging device sealingly connected to a first joint at one end of the pipeline system, a second plugging device sealingly connected to a second joint at the other end of the pipeline system, and an adjusting device for adjusting the position of the first plugging device so as to adapt to pipeline systems at different angles;

[0007] The adjusting device includes an adjusting base, an adjusting arm rotatably arranged at one end on the adjusting base, and a support rod movably arranged at the other end of the adjusting arm and used to support the first plugging device.

[0008] Further, the adjusting arm is positioned on the adjusting base through a positioning pin. A plurality of first positioning holes are annularly arranged at equal angles around a horizontal axis on the edge of the adjusting base. A second positioning hole is arranged at a position corresponding to the first positioning holes on the adjusting arm. The positioning pin can be inserted into the second positioning hole and simultaneously selectively inserted into one of the positioning holes to realize the adjustment of the angle of the adjusting arm.

[0009] Further, front and rear adjusting blocks are arranged on the front and rear sides at the right end of the adjusting arm, and a second adjusting member for adjusting the tightness between the front adjusting block and the rear adjusting block is provided. An adjusting ball is arranged at the lower end of the support rod. Arc-shaped grooves for installing the adjusting ball and imitating the shape of the adjusting ball and avoidance openings for the support rod to swing are arranged on the front adjusting block and the rear adjusting block.

[0010] Further, the first plugging device includes a first support plate, a first plugging assembly arranged at one end of the first support plate and used to sealingly connect the first joint, and a first positioning assembly arranged on the first support plate and positioning the first joint.

[0011] Further, the first plugging assembly includes a second support plate and a plurality of first test plugs detachably installed on the second support plate.

[0012] Further, the first positioning assembly includes a first air cylinder arranged on the first support plate, a third support plate moving left and right under the action of the first air cylinder, and a clamping plate arranged on the third support plate and clamping the upper end of the first joint to perform upper limit positioning on the first joint. A first opening clamping groove imitating the shape of the upper end of the first joint is arranged at the right end of the clamping plate.

[0013] Further, the second plugging device includes a hand-held handle, a clamping claw rotatably arranged on one side of the hand-held handle and clamping the upper end of the second joint to limit the second joint upward, and a second test plug detachably installed on the hand-held handle.

[0014] Further, gas channels for gas to enter and exit are arranged inside the first test plug and the second test plug. Both the first test plug and the second test plug include a plugging end at the upper end, a positioning boss in the middle, and a nozzle at the lower end.

[0015] Further, the clamping claw includes a claw clamping the second joint at the upper end and a handle at the lower end. A second opening clamping groove conforming to the upper end of the second joint is arranged on the claw.

[0016] Further, a pair of mounting ears for mounting the clamping claw are arranged on the hand-held handle, and a first elastic member for elastically resetting the clamping claw is arranged at the lower end. One end of the first elastic member is connected to the hand-held handle, and the other end is connected to the lower end of the handle; a locking assembly for locking the clamping claw on the hand-held handle is arranged on the mounting ear.

[0017] Compared with the prior art, the beneficial effects of a general-purpose pipeline system leakage test tooling of the present utility model are as follows:

[0018] (1) The provided adjustment device can adjust the angle of the first plugging device, so that the first plugging device is in different angles and different orientations, thereby adapting to the first joints of pipeline systems in different angles and different orientations. The second plugging device is separately arranged and separately connected to the second joints of each pipe, and can flexibly adapt to the second joints of pipeline systems in different angles and different orientations. Therefore, this solution can adapt to pipeline systems in different angles and different orientations, has good versatility, reduces the development cost of the tooling and the time for model change, and can reduce production costs;

[0019] (2) A plurality of first test plugs are arranged on the first plugging device, and the leakage tests of multiple pipes can be completed simultaneously, with high test efficiency;

[0020] (3) Both the first test plug and the second test plug are detachably installed on the first plugging device and the second plugging device, and different test plugs can be quickly replaced according to pipeline systems with different apertures, and can adapt to pipelines with different apertures, with high versatility;

[0021] (4) The clamping plate provided on the first plugging device and the clamping claws of the second plugging device are both inserted into the first joint from one side and then abutted against the upper end of the joint to limit the joint upward. The positioning boss of the test plug realizes the limit of the lower end of the joint. Therefore, as long as the heights of the joints are the same, although the shapes of the joints are different, this solution can also realize the positioning of the joints and conduct leakage tests, with good versatility and flexibility.

Description of the Drawings

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the general-purpose pipeline system leakage test tooling according to the embodiment of the present utility model;

[0023] Figure 2 It is a three-dimensional structural schematic diagram of the adjusting device according to the embodiment of the present utility model;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the first plugging device according to the embodiment of the present utility model;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the first test plug or the second test plug according to the embodiment of the present utility model;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the second plugging device according to the embodiment of the present utility model;

[0027] The numbers in the figure represent:

[0028] 100 - General-purpose pipeline system leakage test tooling; 200 - Pipeline system, 201 - First joint, 202 - Second joint, 203 - Pipe;

[0029] 1 - First plugging device, 11 - First support plate, 12 - First plugging assembly, 121 - Second support plate, 122 - First test plug, 1221 - Plugging end, 1222 - Positioning boss, 1223 - Air nozzle, 1224 - Gas channel, 124 - First screw, 13 - First positioning assembly, 131 - First cylinder, 132 - Third support plate, 133 - Clamping plate, 1331 - First open slot, 134 - Second screw;

[0030] 2 - Second plugging device, 21 - Handheld handle, 211 - Mounting ear, 22 - Clamping claws, 221 - Claw, 222 - Handle, 223 - Second open slot, 23 - Second test plug, 24 - Second rotating shaft, 25 - Locking assembly;

[0031] 3 - Adjusting device, 31 - Adjusting base, 311 - First positioning hole, 32 - Adjusting arm, 322 - Left adjusting block, 323 - Right adjusting block, 324 - First adjusting member, 325 - Front adjusting block, 326 - Rear adjusting block, 327 - Second adjusting member, 328 - Arc-shaped groove, 329 - Avoidance opening, 33 - Support rod, 331 - Adjusting ball, 34 - First rotating shaft, 35 - Positioning pin.

Specific Embodiment

[0032] Please refer to Figures 1 - 5 , in this embodiment, a general-purpose pipeline system leakage test tooling is provided. The general-purpose pipeline system leakage test tooling 100 includes a first plugging device 1 that is hermetically connected to the first joint 201 at one end of the pipeline system 200, a second plugging device 2 that is hermetically connected to the second joint 202 at the other end of the pipeline system 200, and an adjusting device 3 for adjusting the position of the first plugging device 1 so as to adapt to pipeline systems at different angles.

[0033] The pipeline system 200 is composed of one or more pipelines. Each pipeline includes a tube 203 with a middle bend, a first joint 201 provided at one end of the tube, and a second joint 202 provided at the other end of the tube. The tube 203 has one or more bends, and the two ends of the tube also bend and extend in different directions. The first joint 201 and the second joint 202 are made of rigid materials or are not easily bendable, and the extending directions at both ends of the tube and the end of the tube are the same and are at different angles and in different orientations. In order to enable the first plugging device 1 and the second plugging device 2 to be hermetically connected to the first joint 201 and the second joint 202 respectively, an adjusting device is provided at one end of the first plugging device 1 to adjust the angle and orientation of the first plugging device 1 to adapt to the first joint 201. Moreover, the second plugging device 2 can be installed on the joint 202 according to the second joint 202 at different angles, and can flexibly adapt to the second joint 202 at different angles and in different orientations.

[0034] The adjusting device 3 includes an adjusting base 31, an adjusting arm 32 rotatably provided at one end on the adjusting base 31, and a support rod 33 movably provided at the other end of the adjusting arm 32 and used to support the first plugging device 1.

[0035] In this embodiment, the adjusting arm 32 is positioned on the adjusting base 32 through the positioning pin 35. The specific implementation principle is as follows: A number of first positioning holes 311 are annularly arranged at equal angles around the horizontal axis on the edge of the adjusting base 31. The adjusting arm 32 is provided with a second positioning hole at a position corresponding to the first positioning holes 311. The positioning pin 35 can be inserted into the second positioning hole and selectively inserted into one of the positioning holes 311 to realize the adjustment of the angle and / or height of the adjusting arm 32.

[0036] In other embodiments, a motor or an electric cylinder can be provided to drive the rotation of the adjusting arm 32, so as to realize the adjustment of the angle of the adjusting arm 32. This can be selected according to the actual angle adjustment accuracy and adjustment situation, and is not limited here.

[0037] The adjusting arm 32 is rotatably arranged on the adjusting base 31 through a first rotating shaft 34. On the left end of the adjusting arm 32, a left adjusting block 322, a right adjusting block 323 and a first adjusting member 324 for adjusting the tightness between the left adjusting block 322 and the right adjusting block 323 are arranged on both sides of the first rotating shaft 34. The first adjusting member 324 is installed on the left adjusting block 322 and the right adjusting block 323 by means of threads. When the angle of the adjusting arm 32 needs to be adjusted, the positioning pin 35 is pulled out, the first adjusting member 324 is loosened, the adjusting arm 32 is rotated to the required angle and height, then the positioning pin 35 is inserted into the first positioning hole 311 and the second positioning hole at the same time, and then the first adjusting member 324 is tightened to completely position the adjusting arm 32 on the adjusting base 31, completing the adjustment of the angle and height of the adjusting arm 32.

[0038] On the front and rear sides of the right end of the adjusting arm 32, a front adjusting block 325, a rear adjusting block 326 and a second adjusting member 327 for adjusting the tightness between the front adjusting block 325 and the rear adjusting block 326 are arranged. The second adjusting member 327 is connected to the front adjusting block 325 and the rear adjusting block 326 by means of threads.

[0039] The lower end of the support rod 33 is provided with an adjusting ball 331. The front adjusting block 325 and the rear adjusting block 326 are provided with an arc-shaped groove 328 for installing the adjusting ball 331 and imitating the shape of the adjusting ball 331 and an avoidance opening 329 for the support rod 33 to swing.

[0040] When the angle of the support rod 33 needs to be adjusted, the second adjusting member 327 is loosened, the adjusting ball 331 is rotated to make the support rod 33 face the corresponding angle and orientation, so that the first plugging device 1 is in different angles and different orientations, so as to adapt to the pipeline system 200 in different angles and different orientations.

[0041] The first plugging device 1 includes a first support plate 11, a first plugging assembly 12 arranged at one end of the first support plate 11 for sealing and connecting the first joint 201, and a first positioning assembly 13 arranged on the first support plate 11 for positioning the first joint 201.

[0042] The first plugging assembly 12 includes a second support plate 121 and a plurality of first test plugs 122 detachably installed on the second support plate 121. The installed plurality of first test plugs 122 can simultaneously complete the leakage test of multiple closed pipes, and the test efficiency is high.

[0043] The second support plate 121 is provided with a first mounting hole for mounting the first test plug 122 and having a circumference profile imitating that of the first test plug 122.

[0044] The outer shape of the first test plug 122 is a stepped shaft and a gas passage 1224 for gas inlet and outlet is arranged inside. The first test plug 122 includes a plugging end 1221 at the upper end, a positioning boss 1222 in the middle and a nozzle 1223 at the lower end. The plugging end 1221 extends into the inside of the first joint 201 to achieve a sealed connection with the first joint 201. The upper end of the positioning boss 1222 abuts against the lower end face of the first joint 201 and the lower end abuts against the second support plate 121, which can not only realize the lower limit position of the first test plug 122 on the second support plate 121, but also realize the lower limit position of the first joint 201. One positioning boss 1222 can realize the lower limit position of the first test plug 122 and the first joint 201. The structure is simple and the positioning method is simple. Moreover, the first test plug 122 can be conveniently disassembled. Installing the first test plug 122 into the first mounting hole through a key can complete the installation of the first test plug 122. If the first joint 201 with a different aperture is replaced, directly removing the first test plug 122 and replacing it with other test plugs can complete the conversion operation. Moreover, the second support plate 121 is installed on the first support plate 11 through the first screw 124. Loosening the first screw 124 and removing the second support plate 121 can quickly complete the replacement of the first test plug 122. It has good versatility and can adapt to different diameters of the first joint 201 so as to adapt to different pipeline systems.

[0045] The first positioning component 13 includes a first cylinder 131 arranged on the first support plate 11, a third support plate 132 that moves left and right under the drive of the first cylinder 131, and a clamping plate 133 arranged on the third support plate 132 and clamping the upper end of the first joint 201 to limit the upper position of the first joint 201.

[0046] The right end of the clamping plate 133 is provided with a first open slot 1331 imitating the upper end of the first joint 201. When the first cylinder 131 drives the third support plate 132 to drive the clamping plate 133 to move to the right, the first joint 201 is clamped into the first open slot 1331. At the same time, the lower surface of the clamping plate 133 abuts against the upper end face of the first joint 201 to realize the limit of the upper end of the first joint 201. Moreover, the clamping plate 133 is installed on the third support plate 132 through the second screw 134. If a different first joint 201 is replaced, directly replacing the clamping plate 133 with a different first open slot 1331 can be done, which can adapt to different first joints 201 so as to adapt to different pipeline systems.

[0047] There are multiple second plugging devices 2. In this embodiment, the second plugging devices 2 are separately arranged and separately connected to the second joints 202 of each pipe. The second plugging device 2 includes a hand-held handle 21, a clamping claw 22 rotatably arranged on one side of the hand-held handle 21 and clamping the upper end of the second joint 202 to perform upper limit on the second joint 202, and a second test plug 23 detachably installed on the hand-held handle 21. The second test plug 23 penetrates through the upper and lower ends of the hand-held handle 21. A second mounting hole for mounting the second test plug 23 and conforming to the circumference of the second test plug 23 is arranged on the hand-held handle 21.

[0048] The second test plug 23 is similar in structure to the first test plug 122. Its outer shape is a stepped shaft and a gas passage 1224 for gas to enter and exit is arranged inside. The second test plug 23 also includes a plugging end at the upper end, a positioning boss in the middle, and a nozzle at the lower end. The plugging end extends into the inside of the second joint 202 to achieve a sealed connection with the second joint 202. The upper end of the positioning boss abuts against the lower end surface of the second joint 202, and the lower end abuts against the hand-held handle 21, which can not only achieve the lower limit of the second test plug 23 on the hand-held handle 21, but also achieve the lower limit of the second joint 202. One positioning boss can achieve the lower limit of the second test plug 23 and the second joint 202. The structure is simple and the positioning method is simple. Moreover, the second test plug 23 can be conveniently disassembled. Installing the second test plug 23 into the second mounting hole through a key can complete the installation of the second test plug 23. If the second joint 202 with a different aperture is replaced, directly removing the second test plug 23 and replacing it with other test plugs can complete the conversion operation.

[0049] The clamping claw 22 includes a claw 221 clamping the upper end of the second joint 202 at the upper end and a handle 222 at the lower end. A second opening clamping groove 223 conforming to the upper end of the second joint 202 is arranged on the claw 221. The claw 221 is vertically arranged with the handle 222. The claw 221 extends horizontally and the handle 222 extends vertically.

[0050] A pair of mounting ears 211 for mounting the clamping claw 22 are arranged on the hand-held handle 21. A first elastic member for elastically resetting the clamping claw 22 is arranged at the lower end. One end of the first elastic member is connected to the hand-held handle 21 and the other end is connected to the lower end of the handle 222. The middle part of the handle 222 of the clamping claw 22 is clamped between the pair of mounting ears 221. The middle part of the handle 222 is rotatably arranged on the hand-held handle 21 through a second rotating shaft 24 on the mounting ear 221. A locking assembly 25 for locking the clamping claw 22 on the hand-held handle 21 is also arranged on the mounting ear 211. The locking assembly 25 includes a bolt connecting the handle 222 and the pair of mounting ears 211, a limit pressing head arranged at one end of the bolt, and a second elastic member arranged between the limit pressing head and the mounting ear 211 and sleeved on the bolt.

[0051] When pressing the pressing head 252, the second elastic member is compressed, and the installation ear 211 and the clamping jaw 22 are loosened. Hold the handle 222 and press it downward. The first elastic member is compressed, and at the same time, the jaw 221 opens. Put the second joint 202 to be tested in. Release the handle 222. The jaw 221 presses on the upper end of the second joint 202 to limit the second joint 202 and prevent the second joint 202 from slipping during the leakage test. Release the pressing head 252. The second elastic member expands to make the installation ear 211 and the clamping jaw 22 abut and press tightly. At this time, the clamping jaw 22 and the installation ear are locked to realize the locking between the clamping jaw 22 and the hand-held handle 21, and the clamping jaw 22 further restricts the slipping of the second joint 202.

[0052] When applying the general pipeline system leakage test tooling 100 provided by this solution, move the general pipeline system leakage test tooling 100 below the pipeline system to be tested. At one end of the first joint 201 of the pipeline system, align the first test plug 122 of the first plugging device 1 with the first joint 201, and the plugging end 1221 of the first test plug 122 extends into the first joint 201 to achieve a sealed connection with the first joint 201. The lower end of the first joint 201 abuts on the positioning boss 1222 of the first test plug 122. The first cylinder 131 drives the third support plate 132 to drive the clamping plate 133 to move to the right. The first joint 201 is caught in the first open slot 1331. At the same time, the lower surface of the clamping plate 133 abuts on the upper end surface of the first joint 201 to limit the upper end of the first joint 201, and complete the sealed connection between the first plugging device 1 and the first joint 201; at the same time, at one end of the second joint 202 of the pipeline system, when pressing the pressing head 252, the second elastic member is compressed, and the installation ear 211 and the clamping jaw 22 are loosened. Hold the handle 222 and press it downward. The first elastic member is compressed, and at the same time, the jaw 221 opens. Align the second test plug 23 with the second joint 202, and the plugging end of the second test plug 23 extends into the second joint 202 to achieve a sealed connection with the second joint 202. The lower end of the second joint 202 abuts on the positioning boss of the second test plug 23. Release the handle 222. The jaw 221 presses on the upper end of the second joint 202 to limit the second joint 202. Release the pressing head 252. The second elastic member expands to make the installation ear 211 and the clamping jaw 22 abut and press tightly, and complete the sealed connection between the second plugging device 2 and the second joint 202; after the sealed connection is completed, the gas machine is used for leakage test. Block one of the test plugs of the first test plug 122 and the second test plug 23, and pass gas into the other test plug to a certain pressure and maintain it for a period of time. Test the pressure in the pipeline. If there is leakage, the pressure will decrease. The instrument judges whether there is leakage according to the pressure difference.

[0053] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A general-purpose pipeline system leakage test tooling, characterized in that: It includes a first plugging device sealingly connected to a first joint at one end of a pipeline system, a second plugging device sealingly connected to a second joint at the other end of the pipeline system, and an adjusting device for adjusting the position of the first plugging device so as to adapt to pipeline systems at different angles; The adjusting device includes an adjusting base, an adjusting arm rotatably arranged at one end on the adjusting base, and a support rod movably arranged at the other end of the adjusting arm and used to support the first plugging device.

2. The general pipeline system leakage test tooling according to claim 1, wherein: The adjusting arm is positioned on the adjusting base by a positioning pin. A plurality of first positioning holes are annularly arranged at equal angles around a horizontal axis on the edge of the adjusting base. A second positioning hole is arranged at a position corresponding to the first positioning holes on the adjusting arm. The positioning pin can be inserted into the second positioning hole and simultaneously selectively inserted into one of the positioning holes to realize the adjustment of the angle of the adjusting arm.

3. The general pipeline system leakage test tooling according to claim 1, characterized in that: On the front and rear sides of the right end of the adjusting arm, there are a front adjusting block and a rear adjusting block, and a second adjusting member for adjusting the tightness between the front adjusting block and the rear adjusting block. An adjusting ball is arranged at the lower end of the support rod. The front adjusting block and the rear adjusting block are provided with an arc-shaped groove for installing the adjusting ball and imitating the shape of the adjusting ball, and an avoidance opening for the support rod to swing.

4. The general pipeline system leakage test tooling according to claim 1, characterized in that: The first plugging device includes a first support plate, a first plugging assembly arranged at one end of the first support plate and used to sealingly connect the first joint, and a first positioning assembly arranged on the first support plate and used to position the first joint.

5. The general pipeline system leakage test tooling according to claim 4, characterized in that: The first plugging assembly includes a second support plate and a plurality of first test plugs detachably installed on the second support plate.

6. The general pipeline system leakage test tooling according to claim 4, wherein: The first positioning assembly includes a first cylinder arranged on the first support plate, a third support plate moving left and right under the action of the first cylinder, and a clamping plate arranged on the third support plate and used to clamp the upper end of the first joint to perform upper limit positioning on the first joint. A first opening clamping groove imitating the shape of the upper end of the first joint is arranged at the right end of the clamping plate.

7. The general pipeline system leakage test tooling according to claim 5, characterized in that: The second plugging device includes a hand-held handle, a clamping claw rotatably arranged on one side of the hand-held handle and used to clamp the upper end of the second joint to perform upper limit positioning on the second joint, and a second test plug detachably installed on the hand-held handle.

8. The general pipeline system leakage test tooling according to claim 7, characterized in that: Gas channels for gas to enter and exit are arranged inside the first test plug and the second test plug. Both the first test plug and the second test plug include a plugging end at the upper end, a positioning boss in the middle, and a nozzle at the lower end.

9. The leak testing tooling for a general-purpose pipeline system according to claim 7, characterized in that: The clamping claw includes a claw clamping the upper end of the second joint at the upper end and a handle at the lower end. A second opening clamping groove imitating the shape of the upper end of the second joint is arranged on the claw.

10. A general pipeline system leakage test tooling according to claim 9, characterized in that: A pair of mounting ears for mounting the clamping claw are arranged on the hand-held handle. A first elastic member for elastically resetting the clamping claw is arranged at the lower end. One end of the first elastic member is connected to the hand-held handle, and the other end is connected to the lower end of the handle. A locking assembly for locking the clamping claw on the hand-held handle is arranged on the mounting ears.

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