Pipeline water pressure test device and use method

Abstract

The invention relates to the technical field of water pressure testing, in particular to a pipeline water pressure testing device and a using method, the pipeline water pressure testing device comprises a base, and leather cups for sealing a pipeline are arranged on the two sides of the top of the base. According to the pipeline water pressure test device and the using method, the water stop belt is flushed into the pipeline when water is injected into the water pipe in the test, and if cracks occur in the pipeline, leaked water flow can quickly drive the water stop belt to accurately fill the cracks; a hose in the middle of the water stop belt is adaptive to pressure change, shrinks under high pressure in the hose to be adaptive to a fracture form, and expands to form an anchoring effect after being in contact with external normal pressure, so that the plugging firmness is greatly improved, the water loss is effectively reduced, and the test environment is prevented from being polluted by water leakage; full-automatic recovery is achieved through linkage of water flow power and a mechanical structure. During water injection, force storage of a force storage spring and locking of a spring latch are completed. When water pumping is conducted after testing, the pipe head moves inwards to be unlocked, the force storage spring is released to drive the pipe head to rotate, the shifting rod pushes the rotating base to rotate, and the water stop belt is regularly wound into the storage disc in cooperation with guiding of the oblique rod of the storage disc.

Description

Technical Field

[0001] This invention relates to the field of water pressure testing technology, specifically to a pipeline water pressure testing device and its usage method. Background Technology

[0002] Pipeline hydrostatic testing is a core step in assessing pipeline strength, sealing performance, and pressure resistance. Whether for finished pipe inspection before construction or pre-construction quality checks, this test is essential to identify potential defects such as cracks, loose connections, and pipe deformation, providing crucial assurance for the safety and reliability of pipeline operation. According to relevant industry standards, pressurized pipelines must undergo individual pipeline hydrostatic testing before construction to accurately determine their actual operating conditions and ensure they can withstand the internal water pressure under design conditions and reach their intended service life. Therefore, the sealing reliability, testing efficiency, and anomaly handling capabilities of the hydrostatic testing equipment directly determine the accuracy of the test results and the economic efficiency of the testing process.

[0003] The existing pipeline hydrostatic testing equipment used by metal pipe casting enterprises has gradually revealed many technical defects in practical applications, making it difficult to meet the requirements of efficient and stable testing: First, the handling of pipeline ruptures during testing is passive. Hydrostatic testing requires applying pressures exceeding the design pressure to verify the ultimate performance of the pipeline, which inevitably leads to pipeline cracks or even ruptures. Existing equipment lacks an active sealing mechanism. Leaks not only rapidly reduce the pressure inside the pipe, causing test interruptions, but also result in a large waste of water resources. At the same time, the spread of leaked water can easily pollute the test site, increasing subsequent cleanup costs. Second, the recycling efficiency of water-stopping components is low. Some improved devices attempt to pre-install water-stopping structures inside the pipeline to deal with leaks, but most of the water-stopping structures are one-time designs or require manual insertion into the pipeline for recycling, which is cumbersome and poses safety hazards. Even some recyclable structures require additional power components such as drive motors, resulting in increased device size and energy consumption.

[0004] In view of this, we propose a pipeline water pressure testing device and its usage method. Summary of the Invention

[0005] The purpose of this invention is to provide a pipeline hydrostatic testing device and its usage method, to solve the problems of passive crack leakage sealing, inconvenient water-stopping structure recycling, and insufficient auxiliary functions in the prior art mentioned in the background section. To achieve the above objective, this invention provides the following technical solution: a pipeline hydrostatic testing device, including a base, and both sides of the top of the base are provided with sealing cups for the pipeline, the left cup being fixed and the right cup being movable via a lead screw;

[0006] The leather cup on the left is equipped with a storage tray, and a water-stop tape is rolled up inside the storage tray;

[0007] A water pipe is horizontally inserted into the leather cup and storage tray on the left side, and a pipe head is fitted on the inner end of the water pipe to seal it. The pipe head has a spiral water spray hole, and when the water sprays water, it drives the pipe head to rotate and flush out the water-stop strip.

[0008] Preferably, when the water pipe discharges water, the pipe head is pushed outward axially, and when the water pipe draws water in, the pipe head is pulled back inward axially.

[0009] A power storage spring is installed between the pipe head and the water pipe, and when the pipe head sprays water and rotates, the power storage spring is wound up to store power.

[0010] The inner end of the water pipe is provided with several one-way spring teeth in a ring. The inner ring of the pipe head is provided with a ring-shaped release groove and a locking groove. When the pipe head moves outward, the locking groove and the spring teeth are aligned to prevent the pipe head from moving backward. When the pipe head moves inward, the release groove and the spring teeth are aligned to release the pipe head in the stored state.

[0011] The inner ring of the storage tray is rotatably equipped with a rotating seat, and the water-stop strip is connected to the rotating seat;

[0012] A lever is provided on the side of the tube head. When the tube head moves outward, the lever is misaligned with the rotating seat. When the tube head moves inward, the lever is aligned with the rotating seat and pushes it to rotate.

[0013] The bottom of the storage tray is equipped with an inclined rod that guides the rotating waterstop into the tray.

[0014] Preferably, the waterstop has a hollow hose in the middle. The hose in the normal pressure bulging state is coiled, and the hose in the high pressure collapsed state is outward spiral.

[0015] Preferably, the end of the lead screw is provided with a rotating handle, and the surface of the rotating handle is provided with anti-slip texture.

[0016] Preferably, the base has an arc-shaped positioning groove on its top, which is adapted to the outer wall of the pipe to be tested.

[0017] Preferably, the water pipe is equipped with a pressure sensor, and the pressure sensor is electrically connected to a pressure display screen.

[0018] Preferably, a damping washer is provided between the rotating seat and the storage tray, and the damping washer is used to adjust the rotational resistance of the rotating seat.

[0019] A method for using a pipeline hydrostatic testing device includes the following steps:

[0020] S1. Place the pipe to be tested on the top of the base, aligning the two ends of the pipe with the left and right rubber cups respectively. Drive the right rubber cup to move closer to the left fixed rubber cup via the screw, and the two rubber cups clamp the two ends of the pipe to achieve a seal.

[0021] S2. Water is injected into the pipe through the water pipe. During the injection process, the water flows through the pipe head at the inner end of the water pipe and sprays out from the spiral spray hole. The impact force of the water spray drives the pipe head to rotate, and at the same time, it pushes the water-stop tape rolled up in the storage tray into the pipe. The thrust of the water spray drives the pipe head to move outward axially. During the outward movement of the pipe head, the slot aligns with the spring clip teeth at the inner end of the water pipe to achieve anti-reverse locking of the pipe head. When the pipe head rotates, the coiling spring completes the energy storage. At this time, the lever is misaligned with the rotating seat in the storage tray.

[0022] S3. Continuously inject water into the pipeline to increase the water pressure and conduct a pipeline water pressure test. If a crack occurs in the pipeline during the test, the leaking water will drive the waterstop to fill the crack. The high pressure in the pipeline will cause the hose in the middle of the waterstop to collapse, which will facilitate filling the crack. After the hose comes into contact with the external normal pressure, it will expand, which will enhance the fixing effect of the waterstop in the crack and realize the automatic sealing of the crack.

[0023] S4. After the water pressure test is completed, water is pumped through the water pipe. The suction force during pumping pulls the pipe head axially inward. During the inward movement of the pipe head, the release groove and the spring clip are aligned, releasing the pipe head lock. The energy storage spring is released, driving the pipe head to rotate. The lever on the side of the pipe head is aligned with the rotating seat and pushes it to rotate. When the rotating seat rotates, under the guidance of the bottom inclined rod in the storage tray, the water-stop tape in the pipe is rolled into the storage tray to complete the arrangement.

[0024] S5. After the waterstop is stored, drive the right-side rubber cup to move in the opposite direction through the screw rod to release the clamping seal on the pipe and take out the tested pipe.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] In this invention, the waterstop is simultaneously flushed into the pipe while water is being injected during the test. If a crack appears in the pipe, the leaking water flow can quickly and precisely fill the crack with the waterstop. The flexible hose in the middle of the waterstop adapts to pressure changes - it collapses under high pressure inside the pipe to match the crack shape, and expands after contacting the external normal pressure to form an "anchoring" effect, which greatly improves the sealing firmness, effectively reduces water loss, and avoids water leakage from polluting the test environment.

[0027] In this invention, fully automatic recycling is achieved by relying on the linkage between water flow dynamics and mechanical structure: during water injection, the spiral spray hole drives the pipe head to rotate and move outward, simultaneously completing the storage spring's energy storage and the spring-locked teeth; during water pumping after the test, the pipe head moves inward to unlock, the storage spring releases and drives the pipe head to rotate, the lever pushes the rotating seat to rotate, and with the guide of the inclined rod of the collection tray, the waterstop is neatly rolled into the collection tray, eliminating the need for manual sorting and reducing operating costs.

[0028] In this invention, the lead screw drives the right-side cup to move horizontally, forming a clamp seal with the left-side fixed cup, ensuring the reliability of the pipeline seal; the spiral water spray hole at the pipe head achieves "one force for multiple uses" - when spraying water, the waterstop is flushed out, the pipe head rotates and stores energy simultaneously, providing power support for the sealing and recovery process, simplifying the test procedure and improving the overall test efficiency. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention in the assembled pipeline state;

[0030] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the storage tray and the waterstop strip of the present invention;

[0032] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0033] Figure 5 This is a schematic diagram of the tube head and storage tray of the present invention;

[0034] Figure 6 This is an exploded view of the water pipe and pipe head of the present invention;

[0035] Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle;

[0036] Figure 8 This is a three-dimensional structural cross-sectional view of the pipe head and spray hole of the present invention.

[0037] In the diagram: 1. Base; 2. Leather cup; 3. Lead screw; 4. Storage tray; 5. Water stop strip; 6. Water pipe; 7. Pipe head; 8. Spray hole; 9. Energy storage spring; 10. Spring clip; 11. Release groove; 12. Slot; 13. Rotary seat; 14. Lever; 15. Diagonal rod; 16. Flexible hose. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1 to 8This invention provides a technical solution: a pipeline water pressure testing device, including a base 1. The base 1 is integrally cast from a high-strength alloy material, and the bottom is provided with anti-slip pads to improve stability during the test. Both sides of the top of the base 1 are provided with sealing cups 2 for sealing the pipeline. The cups 2 are made of high-pressure resistant nitrile rubber, and their end faces facing the pipeline are provided with annular sealing protrusions to enhance the sealing effect. The left cup 2 is fixed to the bracket on the top of the base 1 by bolts. The right cup 2 is slidably connected to the guide rail on the top of the base 1 and is moved by a screw 3. The screw 3 and the connecting seat of the right cup 2 are connected by ball bearings. The end of the screw 3 away from the cup 2 is provided with a rotating handle, and the surface of the handle is provided with anti-slip texture to facilitate manual operation.

[0040] A storage tray 4 is fixedly installed on the left side of the leather cup 2 via a flange structure. The storage tray 4 is a circular hollow structure with a smooth and wear-resistant coating on its inner wall to reduce friction loss when the waterstop 5 is rolled up. The waterstop 5 is rolled up inside the storage tray 4. The waterstop 5 is made of high-strength polyester fiber woven substrate, and its length is designed according to the maximum length of the pipe to be tested to ensure that it can cover the entire length of the pipe.

[0041] A water pipe 6 is horizontally inserted into the left-side leather cup 2 and storage tray 4. The water pipe 6 is made of stainless steel, and its outer diameter is fitted with the mounting holes on the leather cup 2 and storage tray 4 with a clearance. It is sealed by a sealing ring. The outer end of the water pipe 6 is connected to a three-way valve, which is connected to a water supply pump and a water pump to realize the functions of water injection and water pumping. The inner end of the water pipe 6 is fitted with a pipe head 7 to seal it. The pipe head 7 has a cylindrical structure and a sliding seal fit with the water pipe 6. The pipe head 7 has spiral spray holes 8 evenly distributed around the circumference. The diameter of the spray holes 8 gradually decreases from the inner end to the outer end to increase the spray pressure. When the spray holes 8 spray water, the circumferential force generated drives the pipe head 7 to rotate. At the same time, the axial force, combined with the water flow impact, pushes out the waterstop 5.

[0042] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, when water flows out of the water pipe 6, the axial thrust of the water flow on the pipe head 7 is greater than the friction between the pipe head 7 and the water pipe 6, pushing the pipe head 7 to move outward along the axis of the water pipe 6. When the water pipe 6 draws water in, a pressure difference is formed inside and outside the pipe head 7, and the resulting axial suction pulls the pipe head 7 back to move inward along the axis of the water pipe 6.

[0043] A power storage spring 9 is installed between the pipe head 7 and the water pipe 6. The power storage spring 9 is a torsion spring, with one end fixed to the outer circumference of the water pipe 6 and the other end fixed to the inner circumference of the pipe head 7. When the pipe head 7 sprays water and rotates, it drives the torsion spring to twist and deform to retract the power storage spring 9 and store power.

[0044] The inner end of the water pipe 6 is provided with several unidirectional spring clips 10 on its outer circumference. The spring clips 10 are made of elastic steel sheets. The inner ring of the pipe head 7 is provided with annular release grooves 11 and locking grooves 12 at intervals along the axial direction. The depth of the locking groove 12 is adapted to the height of the spring clips 10. The depth of the release groove 11 is greater than the height of the spring clips 10. When the pipe head 7 moves outward, the locking groove 12 and the spring clips 10 are aligned. The spring clips 10 are embedded in the locking groove 12 to prevent the pipe head 7 from rotating in the stored state. When the pipe head 7 moves inward, the release groove 11 and the spring clips 10 are aligned. The spring clips 10 fall into the release groove 11 to release the locking of the pipe head 7 and release the pipe head 7 in the stored state.

[0045] The inner ring of the storage tray 4 is provided with a rotating seat 13, which is arranged around the ring frame. Its outer circumferential surface is in clearance fit with the inner wall of the storage tray 4. One end of the water-stop strip 5 is fixedly connected to the outer circumferential surface of the rotating seat 13 by bolts.

[0046] A lever 14 is provided on the side of the tube head 7 extending radially outward. The length of the lever 14 is adapted to the position of the tube head 7 after it moves inward. When the tube head 7 moves outward, the lever 14 moves outward synchronously with the tube head 7 to the outside of the rotating seat 13, and is misaligned with the rotating seat 13 without making contact. When the tube head 7 moves inward, the lever 14 moves inward synchronously with the tube head 7 to the side of the rotating seat 13, aligns with the protrusion on the rotating seat 13 and pushes it to rotate.

[0047] The bottom of the storage tray 4 is evenly provided with inclined rods 15 along the circumferential direction to guide the rotating waterstop 5 into the tray. The inclined rods 15 are made of stainless steel and their tilt direction is adapted to the rotation direction of the rotating seat 13. The tilt angle is set at 45 degrees, and the top of the inclined rods 15 is provided with an arc transition structure to avoid scratching the waterstop 5.

[0048] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, a hollow hose 16 is embedded in the middle of the waterstop 5 along its length. The hose 16 is made of elastic silicone material. Under normal pressure, the hose 16 is filled with air and is in an inflated state. At this time, the waterstop 5 can be tightly coiled on the swivel seat 13 in the storage tray 4, forming a coiled structure.

[0049] When the pipe is filled with water and is under high pressure, the hose 16 collapses under the water pressure. At this time, the flexibility of the waterstop 5 is enhanced, and it has an outward spiral structure, which makes it easy to move to the crack with the water flow.

[0050] When the hose 16 is filled into the crack along with the waterstop 5 and comes into contact with the external normal pressure environment, the hose 16 returns to its bulging state and fits tightly against the inner wall of the crack.

[0051] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, the end of the lead screw 3 is equipped with a rotating handle. The surface of the rotating handle is provided with anti-slip texture to improve the ease of operation and safety. The anti-slip texture increases the friction between the hand and the handle, preventing slippage when turning, making the movement and adjustment of the right-side rubber cup 2 more effortless and precise, and ensuring the reliability of the pipe sealing clamp.

[0052] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, the top of the base 1 is provided with an arc-shaped positioning groove, which is adapted to the outer wall of the pipe to be tested, so as to realize the rapid positioning of the pipe to be tested. The arc-shaped structure is adapted to the outer wall of the pipe to prevent the pipe from shifting axially or radially during the test, ensuring that the cup 2 is precisely fitted with the end face of the pipe, improving the sealing effect, and at the same time avoiding the pipe shaking from affecting the test data.

[0053] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, a pressure sensor is installed on water pipe 6. The pressure sensor is electrically connected to a pressure display screen to monitor the water pressure in the pipe in real time and provide intuitive feedback on the test pressure changes. This makes it easier for operators to control key test parameters such as the pressurization rate and the duration of stable pressure holding, thereby improving test accuracy and avoiding overpressure that could damage the pipe or insufficient pressure that could affect the effectiveness of the test.

[0054] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 8 As shown, a damping washer is provided between the rotating seat 13 and the storage tray 4. The damping washer is used to adjust the rotational resistance of the rotating seat 13, so that the waterstop 5 is subjected to uniform force and stable speed when it is wound up. This prevents the rotating seat 13 from rotating too fast when the energy storage spring 9 is released, which would cause the waterstop 5 to become entangled or wrinkled. This ensures that the waterstop 5 is stored neatly, extends its service life, and improves the reliability of the next use.

[0055] A method for using a pipeline hydrostatic testing device includes the following steps:

[0056] S1. Place the pipe to be tested on top of the base 1, aligning the two ends of the pipe with the left and right cups 2 respectively. Drive the right cup 2 to move closer to the left cup 2 via the screw 3, and the two cups 2 clamp the two ends of the pipe to achieve a seal.

[0057] S2. Water is injected into the pipe through the water pipe 6. During the injection process, the water flows through the pipe head 7 at the inner end of the water pipe 6 and sprays out from the spiral spray hole 8. The impact force of the water spray drives the pipe head 7 to rotate, and at the same time, it pushes the water-stop strip 5 rolled up in the collection tray 4 into the pipe. The thrust of the water spray drives the pipe head 7 to move axially outward. During the outward movement of the pipe head 7, the slot 12 aligns with the spring retainer 10 at the inner end of the water pipe 6 to achieve anti-reverse locking of the pipe head 7. At the same time, when the pipe head 7 rotates, the coiling storage spring 9 completes the storage, and at this time, the lever 14 is misaligned with the rotating seat 13 in the collection tray 4.

[0058] S3. Continuously inject water into the pipeline to increase the water pressure and conduct a pipeline water pressure test. If a crack occurs in the pipeline during the test, the leaking water will drive the waterstop 5 to fill the crack. The high pressure in the pipeline will cause the hose 16 in the middle of the waterstop 5 to collapse, which will facilitate filling the crack. After the hose 16 comes into contact with the external normal pressure, it will expand, which will enhance the locking effect of the waterstop 5 in the crack and realize the automatic sealing of the crack.

[0059] S4. After the water pressure test is completed, water is pumped through the water pipe 6. The suction force during pumping pulls the pipe head 7 axially inward. During the inward movement of the pipe head 7, the release groove 11 aligns with the spring clip 10, releasing the locking of the pipe head 7. The energy storage spring 9 releases, causing the pipe head 7 to rotate. The lever 14 on the side of the pipe head 7 aligns with the rotating seat 13 and pushes it to rotate. When the rotating seat 13 rotates, under the guidance of the bottom inclined rod 15 inside the collection tray 4, the water-stop tape 5 inside the pipe is rolled into the collection tray 4 to complete the arrangement.

[0060] After the S5 and waterstop 5 are stored, drive the right-side cup 2 to move in the opposite direction through the screw 3 to release the clamping seal on the pipe and take out the tested pipe.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline water pressure testing device, characterized in that, Includes a base (1), and the base (1) has a leather cup (2) with a sealing pipe on both sides of the top. The left leather cup (2) is fixedly set, and the right leather cup (2) is moved by a screw (3). The leather bowl (2) on the left is provided with a storage tray (4), and a water-stop strip (5) is rolled up inside the storage tray (4); Water pipes (6) are horizontally inserted into the leather bowl (2) and storage tray (4) on the left side. The inner end of the water pipe (6) is fitted with a pipe head (7) that seals it. Spiral spray holes (8) are opened on the pipe head (7). When the spray holes (8) spray water, they drive the pipe head (7) to rotate and push out the water stop strip (5).

2. The pipeline hydrostatic testing device according to claim 1, characterized in that: The water pipe (6) pushes the pipe head (7) to move outward axially when it discharges water, and the water pipe (6) pulls the pipe head (7) back to move inward axially when it draws water back. A power storage spring (9) is provided between the pipe head (7) and the water pipe (6). When the pipe head (7) sprays water and rotates, the power storage spring (9) is wound up to store power. The inner end of the water pipe (6) is provided with several one-way spring teeth (10) in a ring shape. The inner ring of the pipe head (7) is provided with an annular release groove (11) and a groove (12). When the pipe head (7) moves outward, the groove (12) and the spring teeth (10) are aligned to achieve anti-reverse locking. When the pipe head (7) moves inward, the release groove (11) and the spring teeth (10) are aligned to release the power storage pipe head (7). The inner ring of the storage tray (4) is provided with a rotating seat (13), and the water-stop strip (5) is connected to the rotating seat (13). The tube head (7) is provided with a lever (14) on the side. When the tube head (7) moves outward, the lever (14) is misaligned with the rotating seat (13). When the tube head (7) moves inward, the lever (14) is aligned with the rotating seat (13) and pushes it to rotate. The storage tray (4) has a guide waterstop strip (5) with a diagonal rod (15) at the bottom.

3. The pipeline hydrostatic testing device according to claim 2, characterized in that: The waterstop (5) has a hollow hose (16) in the middle. Under normal pressure, the hose (16) is bulging and coiled, and under high pressure, it is collapsed and spiraled.

4. The pipeline water pressure testing device according to claim 1, characterized in that: The end of the lead screw (3) is provided with a rotating handle with anti-slip texture on the surface.

5. The pipeline water pressure testing device according to claim 1, characterized in that: The base (1) has an arc-shaped positioning groove on its top that is adapted to the outer wall of the pipe to be tested.

6. The pipeline hydrostatic testing device according to claim 1, characterized in that: A pressure sensor is provided on the water pipe (6), and the pressure sensor is electrically connected to a pressure display screen.

7. A pipeline hydrostatic testing device according to claim 2, characterized in that: A damping washer is provided between the rotating seat (13) and the storage tray (4) to adjust the rotation resistance of the rotating seat (13).

8. A method of using a pipeline hydrostatic testing device, comprising using the pipeline hydrostatic testing device as described in claim 3, characterized in that, Includes the following steps: S1. Place the pipe to be tested on the base (1), align the two ends with the two rubber cups (2), and drive the right rubber cup (2) to move and clamp the pipe with the left rubber cup (2); S2, water pipe (6) is filled with water, water flows out through the spiral spray hole (8) of the pipe head (7), driving the pipe head (7) to rotate and rush out of the water stop strip (5), while pushing the pipe head (7) to move outward, the slot (12) and the spring tooth (10) are aligned and locked, the pipe head (7) rotates and winds up the energy storage spring (9), the lever (14) and the rotating seat (13) are misaligned; S3. Continuously inject water and increase pressure to carry out the test. When the pipeline cracks, the leakage will cause the waterstop (5) to fill. The high pressure will cause the hose (16) to collapse to fit the crack. After the hose (16) comes into contact with normal pressure, it will expand and lock. S4. After the test is completed, the water pipe (6) is pumped out, the suction pulls the pipe head (7) to move inward, the release groove (11) and the spring clip (10) are aligned and unlocked, the energy storage spring (9) drives the pipe head (7) to rotate, the lever (14) pushes the rotating seat (13) to rotate, and the inclined rod (15) rolls the water stop strip (5) into the storage tray (4). S5. The lead screw (3) drives the right-side cup (2) to reset, and the pipe is removed after the seal is released.

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