A high pressure detection and pressure test PE pipe device

Abstract

The application discloses a high-pressure detection and pressure resistance test PE pipeline equipment, and relates to the technical field of pipeline detection. A sleeve is rotationally installed on the inner side of a limiting seat. A locking ring is installed at one end of the sleeve. A lock sleeve is embeddedly installed on the end face of the locking ring. A connecting head is installed at the other end of the sleeve. A cover is threadedly installed on the end face of the connecting head. A connecting valve is rotationally installed on the middle part of the side end face of the cover. The application forms a multiple linkage limiting system with inner embracing and outer limiting. The system can provide radial primary static limiting and radial secondary dynamic limiting for the pipeline in the radial direction, forms a double flexible limiting mechanism, and is matched with an axial constraint mechanism to form a three-dimensional limiting seal. The application can not only realize dynamic compensation of limiting pressure and sealing pressure, but also can compensate for the roundness deviation and surface scratches of the pipeline, compensate for the gap caused by the creep deformation of the pipeline, and fully guarantee the sealing reliability and limiting stability.

Description

Technical Field

[0001] This invention relates to the field of pipeline inspection technology, specifically to a high-pressure inspection and pressure resistance test equipment for PE pipelines. Background Technology

[0002] Due to its excellent toughness, corrosion resistance, and seismic resistance, PE pipes have been widely used in urban gas, water supply and drainage and other engineering fields. In order to ensure the safety of pipe use, product testing services and risk assessment services are needed to ensure the quality of pipes. Chinese patent discloses a pressure pipe testing device, application number: CN202221131732.0, which improves the overall sealing of the pressure pipe during testing, can seal both ends of the pipe, and ensures the sealing of the pipe while driving the pipe to rotate. However, current testing equipment lacks effective limiting constraints and sealing methods when inspecting pipelines, and does not have a dynamic compensation mechanism. During the inspection process, pipelines are not only prone to shaking and displacement, but also prone to poor sealing due to differences in pipeline specifications, deviations in their own roundness, and scratches during transportation. In addition, creep deformation is prone to occur during the inspection process, which further affects the reliability of the limiting and sealing work and affects the inspection accuracy. Summary of the Invention

[0003] This invention provides a high-pressure testing and pressure resistance test equipment for PE pipes, which can effectively solve the problems mentioned in the background art. Current testing equipment lacks effective limiting constraints and sealing methods, and does not have a dynamic compensation mechanism. During the testing process, the pipe is not only prone to shaking and displacement, but also prone to poor sealing due to differences in pipe specifications, deviations in its own roundness, and scratches during transportation. In addition, creep deformation is prone to occur during the testing process, which further affects the reliability of the limiting and sealing work and the testing accuracy.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a PE pipe device for high-pressure testing and pressure resistance testing, comprising a base, wherein a limit sealing mechanism is installed on the top of the base; The limiting sealing mechanism includes a limiting seat; The base is symmetrically and slidably mounted with a limiting seat at its top. A sleeve is rotatably mounted on the inner side of the limiting seat. A locking ring is mounted on one end of the sleeve. A locking sleeve is embedded in the end face of the locking ring. A connector is mounted on the other end of the sleeve. A cap is threaded onto the end face of the connector. A connecting valve is rotatably mounted on the middle of the end face of the cap. An annular groove is formed inside the connector. Several slots are formed at equal angles along the circumference at the position corresponding to the annular groove on the inner wall of the connector. The outer wall of the annular groove is equipped with several guide tubes at equal angles along the circumference. A sleeve gasket is embedded in the inner wall of the sleeve. A threaded rod is installed at the corner of the side end face of the limiting seat. A threaded ring is rotatably installed on the side end face of the limiting seat corresponding to the outer position of the threaded rod. A slider is installed in the middle of the bottom end of the limiting seat. A sliding groove is opened at the top of the base corresponding to the position of the slider.

[0005] Preferably, the inner arc surfaces of the locking sleeve and the gasket are each provided with a plurality of sealing rings at equal intervals, the locking sleeve, the gasket and the sealing rings are all made of polyurethane, and an air valve is installed on the top of the outer curved surface of the locking sleeve.

[0006] Preferably, an isolation mesh is installed on the inner wall of the connector at the position corresponding to the slot, and the annular groove is connected to the sleeve through a conduit.

[0007] Preferably, the sleeve, locking ring, and connector are integrally formed, the sleeve is sealed to the gasket, and the locking ring is fixedly connected to the locking sleeve.

[0008] Preferably, a sealing gasket is installed on the edge of the end face of the cover, a sealing groove is opened at the end of the connector corresponding to the position of the sealing gasket, and several sensors are installed at equal angles along the circumference inside the cover.

[0009] Preferably, the limiting seat is connected to the threaded rod via a threaded ring, the threaded rod is a one-way screw, the slider is T-shaped, and the slider is slidably connected to the groove.

[0010] Preferably, a synchronous detection mechanism is installed on both sides of the limiting seat; The synchronous detection mechanism includes a gear ring; A gear ring is installed on the outer wall of the connector. A rotating wheel is embedded and rotatably installed at the bottom of the side end face of the limiting seat corresponding to the position of the gear ring. A drive rod is embedded and slidably installed on the end face of the rotating wheel. A reduction motor is installed at the top edge of the base corresponding to the position of the drive rod. Support rods are symmetrically slidably installed on both sides of the side end face of the limiting seat. Several strip plates are equidistantly and evenly slidably installed on the outer side of the support rods. A support base is installed on the top of each of the strip plates. A sliding rod is installed on one side of the bottom end of the support base, and a threaded rod is rotatably installed on the other side of the bottom end of the support base. A limiting pad is installed on the top of the support base, and several rolling wheels are rotatably installed on the top of the limiting pad at equal angles along the circumferential direction. A vertical guide plate is slidably installed on one side of the top of the base, and an adjusting screw is rotatably installed on the inner side of the vertical guide plate. An installation plate is threadedly installed on the outer side of the adjusting screw, and a scanning probe is installed at the end of the installation plate. A detector is installed on the other side of the top of the base.

[0011] Preferably, the rotating wheel is connected to the gear ring via gear teeth, the output shaft of the reduction motor is connected to the drive rod, the drive rod is a hexagonal rod, the length of the drive rod is the same as the length of the threaded rod, and the limiting seat and the strip plate are slidably connected to the drive rod. The end face of the rotating wheel is provided with a groove at the position corresponding to the drive rod.

[0012] Preferably, the sliding rod is slidably connected to the strip plate, the strip plate is connected to the threaded rod by threads, and the length of the threaded rod is equal to the length of the sliding rod, and the limiting pad is an elastic arc pad.

[0013] Preferably, both the sensor and the scanning probe are connected to the detector, and both the detector and the input terminal of the geared motor are electrically connected to the output terminal of an external power supply.

[0014] Compared with the prior art, the advantages of the present invention are: the present invention has a scientific and reasonable structure and is safe and convenient to use; 1. A limiting sealing mechanism is provided. Through the cooperation of sleeve, locking ring, connector, cap and connecting valve, an auxiliary limiting connection structure can be formed. It can not only conveniently realize the limiting work of the PE pipe under test and the docking work with the external testing structure, but also provide the initial radial limiting clamping force for the PE pipe under test with the elastic limiting work of the locking sleeve. It can not only effectively compensate for the roundness deviation or slight surface damage of the pipe itself, but also ensure the effectiveness of the seal and perform static locking. It can also adapt to a variety of different pipe diameters within a certain range to achieve flexible self-adaptive sealing. In addition, the limiting seat threaded rod, threaded ring, slider and sliding groove cooperate to achieve axial limiting. It can flexibly adapt to different lengths of pipe sections under test within a certain range and achieve axial anti-dislodgement, so that it can be used for testing various pipe specifications without the need for separate tooling design. By combining the annular groove, slot, conduit, and gasket, a pressure linkage path for clamping force can be formed. On the one hand, the clamping force of the gasket can be dynamically enhanced adaptively, adapting to the radial expansion and axial contraction of the PE pipe, always maintaining effective contact sealing and friction clamping, forming dynamic limit compensation, and can compensate for the gaps caused by creep of the PE material through its own deformation, achieving dynamic compensation, avoiding pipe swaying and displacement, and improving sealing reliability. On the other hand, it can be equipped with a static locking mechanism and an axial anti-loosening mechanism to form a three-dimensional limit seal, improving detection stability.

[0015] 2. Equipped with a synchronous detection mechanism, the bottom support structure is formed by the cooperation of strip plates, support rods, support bases, sliding rods, threaded rods, limiting pads, and rolling wheels. On the one hand, it can more stably support the PE pipe section to be tested from the bottom during the alignment and installation process, providing initial support to the PE pipe section and making the limiting installation of the PE pipe more stable. Moreover, it can effectively utilize the spontaneous change of the arc opening of the limiting pad to adapt to the curvature of the PE pipe to be tested, compensate for the curvature deviation caused by the difference in pipe diameter, and make the rolling wheels stably fit with the PE pipe section to be tested. On the other hand, it can provide auxiliary positioning during the testing process of the PE pipe. To ensure the sealing integrity and limiting stability of the pipeline, bottom support and auxiliary limiting are implemented to reduce the influence of gravity and prevent the PE pipe under test from sagging in the middle section, which would affect the testing stability. It can also prevent the pipeline from being affected by sagging. With the synchronous transmission of gear ring, rotating wheel and drive rod and the driving action of geared motor, the pipeline can be made to rotate smoothly while ensuring the stability and sealing integrity of the pipeline. It can provide a basis for the stability detection of the scanning probe and can feed back the state of the PE pipe under test at different pressures to the detector. It can perform more refined dynamic linkage detection and make the detection results three-dimensional and reliable. The height of the scanning probe can be limited by the cooperation of vertical guide plate, mounting plate and adjusting screw.

[0016] In summary, this testing equipment can form a multi-linkage limiting system with internal and external constraints for auxiliary limiting connections. It can provide initial radial static limiting and secondary radial dynamic limiting for pipelines, forming a dual flexible limiting mechanism. Combined with an axial constraint mechanism, it can form a three-dimensional limiting seal. This not only achieves dynamic compensation of limiting pressure and sealing pressure, but also compensates for the roundness deviation and surface scratches of the pipe itself, and compensates for the gaps caused by pipe creep deformation, fully ensuring sealing reliability and limiting stability. It can also be applied to the testing of pipes of different specifications within a certain range, and can perform dynamic linkage testing, making the testing more precise, reliable and effective. Attached Figure Description

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

[0018] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the connector mounting structure of the present invention; Figure 3 This is a schematic diagram of the gear ring mounting structure of the present invention; Figure 4 This is a schematic diagram of the limiting and sealing mechanism of the present invention; Figure 5 This is a schematic diagram of the sleeve installation structure of the present invention; Figure 6 This is a schematic diagram of the synchronous detection mechanism of the present invention; Figure 7 This is a schematic diagram of the limiting pad installation structure of the present invention; Numbered in the diagram: 1. Base 20. Limiting and sealing mechanism; 201. Limiting seat; 202. Sleeve; 203. Locking ring; 204. Locking sleeve; 205. Connector; 206. Cover; 207. Connecting valve; 208. Ring groove; 209. Groove; 210. Guide tube; 211. Gasket; 212. Threaded rod; 213. Threaded ring; 214. Slider; 215. Slide groove; 21. Sealing ring; 22. Air valve; 23. Isolation mesh; 24. Sealing gasket; 25. Sealing groove; 26. Sensor; 30. Synchronous detection mechanism; 301. Gear ring; 302. Rotating wheel; 303. Drive rod; 304. Gear motor; 305. Strip plate; 306. Support rod; 307. Support base; 308. Sliding rod; 309. Threaded rod; 310. Limiting pad; 311. Rolling wheel; 312. Vertical guide plate; 313. Mounting plate; 314. Adjusting screw; 315. Scanning probe; 316. Detector. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] Example: Figure 1-7 As shown, the present invention provides a technical solution, a PE pipe device for high pressure testing and pressure resistance testing, including a base 1, and a limit sealing mechanism 20 installed on the top of the base 1; The limiting sealing mechanism 20 includes a limiting seat 201, a sleeve 202, a locking ring 203, a locking sleeve 204, a connector 205, a cover 206, a connecting valve 207, an annular groove 208, a slot 209, a guide tube 210, a gasket 211, a threaded rod 212, a threaded ring 213, a slider 214, and a sliding groove 215; A limiting seat 201 is symmetrically and slidably installed on the top of the base 1. A sleeve 202 is rotatably installed on the inner side of the limiting seat 201. A locking ring 203 is installed on one end of the sleeve 202. A locking sleeve 204 is embedded in the end face of the locking ring 203. A connector 205 is installed on the other end of the sleeve 202. A cover 206 is threaded onto the end face of the connector 205. A sealing gasket 24 is installed on the side end face of the cover 206. A sealing groove 25 is formed at the end of the connector 205 corresponding to the position of the sealing gasket 24. The cover 206... Several sensors 26 are installed at equal angles along the circumference inside the cover 206. There are four sensors 26, namely pressure sensors and temperature sensors. The pressure sensors and temperature sensors are symmetrically installed in pairs inside the cover 206 to ensure sealing and achieve stable detection. A connecting valve 207 is rotatably installed in the middle of the side end face of the cover 206. An annular groove 208 is opened inside the connector 205. Several slots 209 are opened at equal angles along the circumference at the position corresponding to the annular groove 208 on the inner wall of the connector 205. The outer wall of the annular groove 208 is equipped with several guide tubes 210 at equal angles along the circumference. The inner wall of the connector 205 is equipped with an isolation net 23 at the position corresponding to the slot 209. The annular groove 208 is connected to the sleeve 202 through the guide tubes 210 for communication and flow guidance. A gasket 211 is embedded in the inner wall of the sleeve 202. Several sealing rings 21 are evenly arranged at equal intervals on the inner arc surfaces of the locking sleeve 204 and the gasket 211. The locking sleeve 204, the gasket 211 and the sealing rings 21 are all made of polyurethane. An air valve 22 is installed on the top of the outer curved surface of the locking sleeve 204 for flexible limiting and sealing. The sleeve 202, locking ring 203, and connector 205 are integrally formed. The sleeve 202 is sealed to the gasket 211, and the locking ring 203 is fixedly connected to the locking sleeve 204 to achieve synchronous sealing and limiting. A threaded rod 212 is installed at the corner of the side end face of the limiting seat 201. A threaded ring 213 is rotatably installed on the side end face of the limiting seat 201 corresponding to the outer position of the threaded rod 212. A slider 214 is installed in the middle of the bottom end of the limiting seat 201. A groove 215 is opened at the top of the base 1 corresponding to the position of the slider 214. The limiting seat 201 is connected to the threaded rod 212 through the threaded ring 213. The threaded rod 212 is a one-way screw. The slider 214 is T-shaped and is slidably connected to the groove 215 for axial constraint.

[0021] The limiting seat 201 is equipped with a synchronous detection mechanism 30, a rotating wheel 302, a drive rod 303, a reduction motor 304, a strip plate 305, a support rod 306, a support base 307, a sliding rod 308, a threaded rod 309, a limiting pad 310, a rolling wheel 311, a vertical guide plate 312, a mounting plate 313, an adjusting screw 314, a scanning probe 315, and a detector 316 on both sides. The synchronous detection mechanism 30 includes a gear ring 301; A gear ring 301 is installed on the outer wall of the connector 205. A rotating wheel 302 is embedded and rotatably installed at the bottom of the side end face of the limiting seat 201 corresponding to the position of the gear ring 301. A drive rod 303 is slidably installed at the end face of the rotating wheel 302. A reduction motor 304 is installed at the top edge of the base 1 corresponding to the position of the drive rod 303. The rotating wheel 302 is connected to the gear ring 301 through gear teeth. The output shaft of the reduction motor 304 is connected to the drive rod 303. The drive rod 303 is a hexagonal rod. The length of the drive rod 303 is the same as the length of the threaded rod 212. The limiting seat 201 and the strip plate 305 are slidably connected to the drive rod 303. The end face of the rotating wheel 302 is provided with a groove corresponding to the position of the drive rod 303 for transmission. Support rods 306 are symmetrically slidably installed on both sides of the side end face of the limiting seat 201. Several strip plates 305 are equidistantly and evenly slidably installed on the outer side of the support rods 306. A support base 307 is installed on the top of each of the strip plates 305. A sliding rod 308 is installed on one side of the bottom end of the support base 307, and a threaded rod 309 is rotatably installed on the other side of the bottom end of the support base 307. A limiting pad 310 is installed on the top of the support base 307. The sliding rod 308 is slidably connected to the strip plate 305. The strip plate 305 is connected to the threaded rod 309 by threads, and the length of the threaded rod 309 is equal to the length of the sliding rod 308. The limiting pad 310 is an elastic arc pad, and it can only deform along the direction of arc opening expansion and contraction to adapt and adjust. Several rolling wheels 311 are rotatably installed on the top of the limiting pad 310 at equal angles along the circumferential direction. A vertical guide plate 312 is slidably installed on one side of the top of the base 1. An adjusting screw 314 is rotatably installed on the inner side of the vertical guide plate 312. An installation plate 313 is threadedly installed on the outer side of the adjusting screw 314. A scanning probe 315 is installed at the end of the installation plate 313. A detector 316 is installed on the other side of the top of the base 1. The sensor 26 and the scanning probe 315 are both connected to the detector 316. The input terminals of the detector 316 and the geared motor 304 are electrically connected to the output terminal of an external power supply for linkage detection.

[0022] The working principle and usage process of this invention: When using this high-pressure testing and pressure resistance test equipment to test PE pipes, the operator first matches the size and specifications of the connector 205 that are compatible with the nominal diameter of the pipe to be tested. Taking a pipe with a diameter of 60 cm as an example, a connector 205 that can cover pipe diameters from 48 cm to 72 cm is selected to ensure the best sealing stress distribution and fatigue life. This step only needs to be confirmed during the first installation, and there is no need to repeat the operation for the same batch of tests. The PE pipe segment to be tested is then placed on the roller 311 at the testing station. The support base 307 provides stable support to the roller 311 through the limiting pad 310, automatically adapting to the curvature of the PE pipe to be tested, so that the roller 311 and the PE pipe segment to be tested are stably fitted, supporting the PE pipe segment to be tested more stably from the bottom, thereby compensating for the curvature deviation of PE pipes of different diameters, providing initial support to the PE pipe segment to be tested, and assisting the PE pipe segment to be tested in subsequent alignment. Then, the threaded ring 213 can be rotated, and under the limit of the slider 214, the limiting seat 201 is driven to slide along the slide groove 215, so that it drives the connector 205 to approach the end of the PE pipe segment to be tested. During this process, the orientation of the end of the PE pipe segment to be tested can be finely adjusted to align with the locking ring 203. Then, the end of the PE pipe section to be tested is inserted into the locking ring 203 through the inside of the locking sleeve 204, and passes through the sleeve 202 through the inside of the sleeve 211, so that its end is inserted into the connector 205 and abuts against the connector 205. The above operation is repeated to stably lock the two ends of the PE pipe section to be tested to the connectors 205 on both sides in sequence. By rotating the threaded ring 213, under the limit of the threaded rod 212, the connectors 205 at both ends of the PE pipe section to be tested are tightened axially to prevent detachment. Then rotate the threaded rod 309, and under the limit of the sliding rod 308, drive the support base 307 to rise, further making the rolling wheel 311 fit with the PE pipe section to be tested, and supporting the PE pipe section to be tested from the bottom. This operation can also be carried out simultaneously during the adjustment of the connector 205 and when the end position of the PE pipe section to be tested is finely adjusted, to assist in the alignment of the axis. Then, an external inflation device can be used to inject air into the locking sleeve 204 through the air valve 22. During the low-pressure test, the pressure range of the injected air is usually maintained between 0.025MPa and 0.15MPa. During the high-pressure test, the injected air pressure is made to reach 1.126MPa. Under the pressure of the internal air pressure, the locking sleeve 204 will expand accordingly, which will then simultaneously squeeze the outer locking ring 203 and hold the inner PE pipe section to be tested, compensating for the roundness deviation and surface scratches of the pipe itself, ensuring the effectiveness of the seal, and providing the initial radial clamping force to statically lock the connectors 205 at both ends of the PE pipe section to be tested with the ends of the PE pipe section to be tested, so that the locked PE pipe section to be tested and the connectors 205 at both ends form a complete sealed cavity. Next, the sensor 26 can be installed inside the cover 206. After the sensor 26 is installed, the cover 206 can be rotated and installed on the connector 205 by thread, and the sealing gasket 24 can be stably inserted into the sealing groove 25. Then, the connecting valve 207 can be connected to the external booster pump system to inject the test medium into the PE pipe section to be tested. Here, clean water is used by default. The air inside the PE pipe section to be tested is discharged, and then the test can be carried out. After the external booster pump system injects water into the connector 205 through the connecting valve 207, a flow path is formed between the sleeve 202 and the annular groove 208 under the connection of the conduit 210. In addition, the slot 209 opens the space between the annular groove 208 and the inner side of the connector 205, so that the sleeve 202 can be connected to the main pipeline to form a pressure linkage path. During the testing process, as the water pressure injected into the PE pipe under test increases, the water pressure is transmitted to the inside of the sleeve 202 through the pressure linkage passage. Consequently, the gasket 211 will also bear the same pressure, and it will expand radially accordingly under the pressure. It will abut against the PE pipe under test through the sealing ring 21 on the inner arc surface, and as the water pressure injected into the PE pipe under test increases, it will tighten the pipe. The clamping force of the gasket 211 on the PE pipe under test will increase synchronously with the water pressure. Specifically, taking a pipe with a working pressure of 0.4MPa as an example, 1.5 times that is 0.6MPa, which is lower than 0.8MPa. Therefore, the test pressure should be 0.8MPa. When the injected water pressure reaches 0.8MPa, the external booster pump will stop pressurizing. Since the water pressure no longer increases, the clamping pressure of the gasket 211 on the PE pipe under test will also stop increasing and remain in the current state. This achieves radial dynamic sealing and further compensates for the pipe's own roundness deviation and surface scratches. It dynamically locks the connectors 205 at both ends of the PE pipe section under test to the end of the PE pipe section under test, forming dynamic limit compensation. It can also compensate for the gaps caused by the creep of PE material through its own deformation. It can adapt to pressure testing of different specifications, ensure the pipe's sealing performance, and avoid pipe shaking and displacement. During this process, the reduction motor 304 can also be started simultaneously. The reduction motor 304 rotates the wheel 302 through the drive rod 303, so that the gear ring 301, driven by the rotating wheel 302, drives the PE tube under test to deflect synchronously through the connector 205. At this time, the support base 307 will provide stable support to the limiting pad 310, so that the limiting pad 310 lifts the PE tube section under test through the rolling wheel 311, preventing the middle of the PE tube section under test from sagging. At the same time, the rolling wheel 311 will rotate with the PE tube under test, reducing friction and making the PE tube under test deflect more stably. This allows the scanning probe 315 to scan the PE tube under test during its rotation and to feed back the state of the PE tube under test at different pressures to the detector 316, enabling more precise linkage detection. During this process, the mounting plate 313 can be raised or lowered by rotating the adjusting screw 314 to adjust the position of the scanning probe 315 and adjust its scanning accuracy and range.

[0023] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-pressure testing and pressure resistance test equipment for PE pipes, comprising a base (1), characterized in that: A limiting sealing mechanism (20) is installed on the top of the base (1); The limiting sealing mechanism (20) includes a limiting seat (201); The base (1) has a limiting seat (201) symmetrically slidably mounted on its top end. A sleeve (202) is rotatably mounted on the inner side of the limiting seat (201). A locking ring (203) is mounted on one end of the sleeve (202). A locking sleeve (204) is embedded in the end face of the locking ring (203). A connector (205) is mounted on the other end of the sleeve (202). A cap (206) is threaded onto the end face of the connector (205). A connecting valve (207) is rotatably mounted on the middle of the side end face of the cap (206). An annular groove (208) is opened inside the connector (205). Several slots (209) are opened at equal angles along the circumference at the position corresponding to the annular groove (208) on the inner wall of the connector (205). The outer wall of the annular groove (208) is equipped with several guide tubes (210) at equal angles along the circumferential direction. The inner wall of the sleeve (202) is embedded with a gasket (211). A threaded rod (212) is installed at the corner of the side end face of the limiting seat (201). A threaded ring (213) is rotatably installed on the side end face of the limiting seat (201) corresponding to the outer position of the threaded rod (212). A slider (214) is installed in the middle of the bottom end of the limiting seat (201). A groove (215) is opened at the top of the base (1) corresponding to the position of the slider (214).

2. The high-pressure testing and pressure resistance test equipment for PE pipes according to claim 1, characterized in that, The inner arc surfaces of the lock sleeve (204) and the gasket (211) are each provided with a number of sealing rings (21) at equal intervals. The lock sleeve (204), the gasket (211) and the sealing rings (21) are all made of polyurethane. An air valve (22) is installed on the top of the outer curved surface of the lock sleeve (204).

3. The high-pressure testing and pressure resistance test equipment for PE pipes according to claim 1, characterized in that, An isolation net (23) is installed at the position of the slot (209) on the inner wall of the connector (205), and the annular groove (208) is connected to the sleeve (202) through the conduit (210).

4. The high-pressure testing and pressure resistance test equipment for PE pipes according to claim 1, characterized in that, The sleeve (202), locking ring (203) and connector (205) are integrally formed. The sleeve (202) is sealed to the gasket (211), and the locking ring (203) is fixedly connected to the locking sleeve (204).

5. The PE pipe equipment for high-pressure testing and pressure resistance testing according to claim 1, characterized in that, A sealing gasket (24) is installed on the side end face of the cover (206), and a sealing groove (25) is opened at the end of the connector (205) corresponding to the sealing gasket (24). Several sensors (26) are installed at equal angles along the circumferential direction inside the cover (206).

6. The PE pipe equipment for high-pressure testing and pressure resistance testing according to claim 1, characterized in that, The limiting seat (201) is connected to the threaded rod (212) through the threaded ring (213). The threaded rod (212) is a one-way screw. The slider (214) is T-shaped and is slidably connected to the groove (215).

7. The high-pressure testing and pressure resistance test equipment for PE pipes according to claim 1, characterized in that, Synchronous detection mechanisms (30) are installed on both sides of the limiting seat (201); The synchronous detection mechanism (30) includes a gear ring (301); A gear ring (301) is installed on the outer wall of the connector (205). A rotating wheel (302) is embedded and rotatably installed at the bottom of the side end face of the limiting seat (201) corresponding to the position of the gear ring (301). A drive rod (303) is embedded and slidably installed on the end face of the rotating wheel (302). A geared motor (304) is installed at the top edge of the base (1) corresponding to the position of the drive rod (303). Support rods (306) are symmetrically slidably installed on both sides of the side end face of the limiting seat (201). Several strip plates (305) are equidistantly and evenly slidably installed on the outer side of the support rods (306). A support base (307) is installed on the top of each of the strip plates (305). A sliding rod (308) is installed on one side of the bottom end of the support base (307), and a threaded rod (309) is rotatably installed on the other side of the bottom end of the support base (307). A limiting pad (310) is installed on the top end of the support base (307). Several rolling wheels (311) are rotatably installed on the top end of the limiting pad (310) along the circumferential direction at equal angles. A vertical guide plate (312) is slidably installed on one side of the top of the base (1). An adjusting screw (314) is rotatably installed on the inner side of the vertical guide plate (312). An installation plate (313) is threadedly installed on the outer side of the adjusting screw (314). A scanning probe (315) is installed at the end of the installation plate (313). A detector (316) is installed on the other side of the top of the base (1).

8. The high-pressure testing and pressure resistance test equipment for PE pipes according to claim 7, characterized in that, The rotating wheel (302) is connected to the gear ring (301) through gear teeth. The output shaft of the reduction motor (304) is connected to the drive rod (303). The drive rod (303) is a hexagonal rod. The length of the drive rod (303) is the same as the length of the threaded rod (212). The limiting seat (201) and the strip plate (305) are slidably connected to the drive rod (303). The end face of the rotating wheel (302) is provided with a groove corresponding to the position of the drive rod (303).

9. The high-pressure testing and pressure resistance test equipment for PE pipes according to claim 7, characterized in that, The sliding rod (308) is slidably connected to the strip plate (305), the strip plate (305) is connected to the threaded rod (309) by threads, and the length of the threaded rod (309) is equal to the length of the sliding rod (308). The limiting pad (310) is an elastic arc pad.

10. A high-pressure testing and pressure-resistance testing equipment for PE pipes according to claim 7, characterized in that, The sensor (26) and the scanning probe (315) are both connected to the detector (316), and the input terminals of the detector (316) and the geared motor (304) are both electrically connected to the output terminal of the external power supply.

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