Intelligent sealing test device and test method for HDPE double-wall corrugated pipe

Abstract

The invention discloses an intelligent sealing test device and method for an HDPE double-wall corrugated pipe, and belongs to the technical field of pipeline sealing performance detection. An intelligent sealing test device for an HDPE double-wall corrugated pipe comprises a detection base and a detection assembly, one end of the detection base is provided with a fixed clamp, the other end of the detection base is provided with a lead screw, the lead screw is provided with a movable clamp, and the fixed clamp and the movable clamp respectively clamp the two ends of a corrugated pipe body. According to the intelligent sealing testing device and method for the HDPE double-wall corrugated pipe, the intelligent sensor module is integrated, the AI algorithm is combined to process data in real time, the position of a leakage point can be accurately recognized, the leakage probability is calculated, the intelligent solution greatly improves the detection precision and efficiency, and the influence of human factors is reduced; the design of the annular sealing air bag and the jacking air bag is adopted, and the sealing strength can be automatically adjusted according to the specific shape and size of the corrugated pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline sealing detection, and specifically relates to an intelligent sealing test device and test method for HDPE double-wall corrugated pipes. Background Art

[0002] HDPE double-wall corrugated pipes are widely used due to their light weight, corrosion resistance, and high ring stiffness. However, their sealing performance directly affects the engineering safety. Traditional sealing test methods mostly rely on manual pressurization and visual leak detection, with low efficiency and easy to miss detection. In the prior art, although the pressure decay method can quantitatively detect, it lacks real-time data feedback and intelligent analysis capabilities and is difficult to meet the requirements of automated production. Summary of the Invention

[0003] The purpose of the present invention is to provide an intelligent sealing test device and test method for HDPE double-wall corrugated pipes. By integrating an intelligent sensor module and combining AI algorithms to process data in real time, it can accurately identify the location of leakage points and calculate the leakage probability. The design of a circular sealing airbag and a tightening airbag is adopted to ensure that corrugated pipes of different specifications can be effectively sealed, solving the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An intelligent sealing test device for HDPE double-wall corrugated pipes, including a detection base and a detection component. One end of the detection base is provided with a fixed clamp, and the other end of the detection base is provided with a lead screw. An adjustable clamp is installed on the lead screw, and the lead screw controls the adjustable clamp engaged with it to move along the length direction of the detection base for clamping corrugated pipe bodies of different lengths. The fixed clamp and the adjustable clamp respectively clamp both ends of the corrugated pipe body and seal the ends of the corrugated pipe body. A second chute is opened on the detection base, and a detection component is movably connected to the second chute. The detection component includes an intelligent sensor module, and three-dimensional positioning of leakage points is realized through multi-sensor data fusion.

[0005] Preferably, both the fixed clamp and the adjustable clamp include a clamping component and a limiting plate. The clamping component and the lower end of the limiting plate on the fixed clamp are both fixedly connected to the detection base. A sealing air inlet part is installed on the limiting plate of the fixed clamp. The clamping component and the lower end of the limiting plate on the adjustable clamp are fixedly connected through a connecting plate, and a tightening sealing part is arranged on the limiting plate of the adjustable clamp.

[0006] Preferably, a first chute is opened on the detection base, and the first chute is used to limit the movement path of the adjustable clamp. A threaded sleeve engaged with the lead screw is arranged on the connecting plate, and the threaded sleeve is movably connected to the first chute.

[0007] Preferably, the clamping assembly includes a support plate, a hollow gear ring, clamping plates, and a driving gear. The hollow gear ring is movably connected to the support plate through a sliding ring. Clamping plates distributed in a ring shape at equal intervals are arranged on the support plate on the outer circle of the hollow gear ring. One end of each clamping plate is provided with a driven gear, and the driven gear meshes with the hollow gear ring. The driving gear meshes with the hollow gear ring. Under the control of a driving motor, the driving gear drives the hollow gear ring to rotate. The hollow gear ring drives the driven gears to rotate synchronously in the same direction, controlling the rotation of the clamping plates to clamp and fix the corrugated pipe body.

[0008] Preferably, the airtight intake member includes a sealing plate, an annular airtight airbag, a pressing plate, an intake pipe, and a first cylinder. The sealing plate and the pressing plate are respectively arranged on both sides of the annular airtight airbag. An intake pipe is fixedly connected to the center position of the pressing plate. The intake pipe penetrates through the annular airtight airbag and the pressing plate. One end of the intake pipe outside the corrugated pipe body is connected to an air intake device. The pressing plate is connected to the output end of the first cylinder. An activity hole matching the intake pipe is opened at the center of the pressing plate. When the pressing plate pushes the annular airtight airbag, the sealing plate engages with one end of the corrugated pipe body.

[0009] Preferably, a sleeve is arranged at one end of the corrugated pipe body. An installation step is arranged between the sleeve and the corrugated pipe body. The sealing plate abuts against the installation step to achieve the first layer of sealing.

[0010] Preferably, the pressing and sealing member includes a pressing plate, a pressing airbag, and a second cylinder. A pressing airbag is arranged on one side of the pressing plate. The other side of the pressing plate is connected to the output end of the second cylinder. The second cylinder is installed on a limiting plate. The second cylinder drives the pressing plate and the pressing airbag to move towards the corrugated pipe body. The pipe orifice of the corrugated pipe body sinks into the pressing airbag, causing the pressing airbag to deform and sealing the pipe orifice of the corrugated pipe body.

[0011] Preferably, the detection assembly includes a moving detection plate, a telescopic frame, a third cylinder, and a fourth cylinder. The moving detection plate is movably connected through the telescopic frame. The third cylinder and the fourth cylinder are respectively arranged at both ends of the moving detection plate and the telescopic frame. The third cylinder is used to control all the moving detection plates to move at equal intervals in the second sliding groove to adjust the overall position of the moving detection plates. The fourth cylinder is used to control the distance between two adjacent moving detection plates.

[0012] Preferably, an electric telescopic rod and an intelligent sensor module are provided on the mobile detection board. The intelligent sensor module includes a pressure sensor, an acoustic emission sensor, and an intelligent control terminal. The upper end of the electric telescopic rod is installed with a pressure sensor. After the bellows body is fixed, the acoustic emission sensors are arranged on both sides of the bellows body. The two acoustic emission sensors are symmetrically arranged at a position horizontal to the bellows body. The pressure sensor and the acoustic emission sensor are arranged along the axial direction of the bellows body to monitor local pressure changes. The acoustic emission sensor captures high-frequency acoustic wave signals during leakage. The intelligent control terminal integrates an AI algorithm to process sensor data in real time, converts the detection results of the pressure sensor and the acoustic emission sensor into confidence levels, and determines the leakage probability through a fusion rule.

[0013] Another technical problem to be solved by the present invention is to provide an HDPE double-wall bellows intelligent sealing test device and a test method, including the following steps:

[0014] Step 1: Place the bellows body on the detection base, and fix and seal both ends through a fixed clamp and a movable clamp respectively.

[0015] Step 2: The detection component adjusts the distribution position of the intelligent sensor module.

[0016] Step 3: Fill the bellows body with test gas through the air inlet pipe, and the variable-frequency air pump pressurizes according to a preset pressure curve. The intelligent sensor module monitors the deformation pressure at the wave crest or wave trough of the bellows body to reflect the internal sealing state, and monitors the pressure inside the pipe in real time. After reaching the target pressure, maintain a constant pressure for minutes to ensure the system stability.

[0017] Step 4: The intelligent sensor module generates the leakage point coordinates and a three-dimensional report based on the multi-sensor data fusion algorithm.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] An intelligent sealing test device and test method for HDPE double-wall corrugated pipes proposed by the present invention can accurately identify the location of leakage points and calculate the leakage probability by integrating an intelligent sensor module and processing data in real time with an AI algorithm. This intelligent solution greatly improves the detection accuracy and efficiency and reduces the influence of human factors. The design of an annular sealing airbag and a tightening airbag can automatically adjust the sealing force according to the specific shape and size of the corrugated pipe, ensuring that corrugated pipes of different specifications can be effectively sealed. The combined design of a lead screw, a chute, and multiple cylinders enables the fixed fixture and the movable fixture to be flexibly adjusted to adapt to corrugated pipes of different lengths. At the same time, the precise positioning function of the moving detection plate allows for comprehensive and detailed pressure monitoring of the corrugated pipe. By real-time monitoring of local pressure changes and capturing high-frequency acoustic signals during leakage, not only can potential problems be detected in a timely manner, but also the leakage source can be quickly located, providing a guarantee for taking timely measures, thereby enhancing the safety of the entire system and the reliability of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the test state of the corrugated pipe body of the present invention;

[0021] Figure 2 It is an overall structural diagram of the intelligent sealing test device for HDPE double-wall corrugated pipes of the present invention;

[0022] Figure 3 It is a side view of the fixed fixture of the present invention;

[0023] Figure 4 It is a state diagram of the fixed fixture clamping the corrugated pipe body of the present invention;

[0024] Figure 5 It is a structural diagram of the movable fixture of the present invention;

[0025] Figure 6 It is a main structural diagram of the detection component of the present invention.

[0026] In the figure: 1, detection base; 11, lead screw; 12, first chute; 13, second chute; 2, fixed fixture; 21, clamping component; 211, support plate; 212, hollow gear ring; 213, clamping plate; 2131, driven gear; 214, driving gear; 22, limit plate; 23, sealing air inlet part; 231, sealing plate; 232, annular sealing airbag; 233, extrusion plate; 234, air inlet pipe; 235, first cylinder; 3, movable fixture; 31, connecting plate; 311, threaded sleeve; 32, tightening and sealing part; 321, tightening plate; 322, tightening airbag; 323, second cylinder; 4, corrugated pipe body; 41, sleeve; 5, detection component; 51, moving detection plate; 511, electric telescopic rod; 52, telescopic frame; 53, third cylinder; 54, fourth cylinder. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] In order to solve the problems that existing sealing test methods mostly rely on manual pressurization and visual leak detection, with low efficiency and easy to miss detection. In the prior art, although the pressure decay method can quantitatively detect, it lacks real-time data feedback and intelligent analysis capabilities and is difficult to meet the requirements of automated production. Please refer to Figures 1-6 , the following technical solutions are provided in this embodiment:

[0029] An intelligent sealing test device for HDPE double-wall corrugated pipes includes a detection base 1. A fixed clamp 2 is arranged at one end of the detection base 1, and a lead screw 11 is arranged at the other end of the detection base 1. A movable clamp 3 is installed on the lead screw 11. One end of the lead screw 11 is provided with a motor. The motor drives the lead screw 11 to rotate, and the lead screw 11 controls the movable clamp 3 engaged with it to move along the length direction of the detection base 1 for clamping corrugated pipe bodies 4 of different lengths. A first chute 12 for accommodating the lead screw 11 is opened on the detection base 1, and the first chute 12 is used to limit the moving path of the movable clamp 3.

[0030] Specifically, both the fixed clamp 2 and the movable clamp 3 include a clamping assembly 21 and a limiting plate 22. The lower ends of the clamping assembly 21 and the limiting plate 22 of the fixed clamp 2 are both fixedly connected to the detection base 1. The lower ends of the clamping assembly 21 and the limiting plate 22 on the movable clamp 3 are fixedly connected through a connecting plate 31, and a threaded sleeve 311 engaged with the lead screw 11 is arranged on the connecting plate 31. The threaded sleeve 311 is movably connected to the first chute 12.

[0031] The clamping assembly 21 includes a support plate 211, a hollow tooth ring 212, a clamping plate 213 and a driving gear 214. An insertion opening is opened on the support plate 211. The hollow tooth ring 212 is installed on the support plate 211 near the insertion opening through a sliding ring. Clamping plates 213 distributed annularly at equal distances are arranged on the support plate 211 on the outer circle of the hollow tooth ring 212. One end of the clamping plate 213 is provided with a driven gear 2131, and the driven gear 2131 is engaged with the hollow tooth ring 212. The driving gear 214 is engaged with the hollow tooth ring 212. Under the control of the driving motor, the driving gear 214 drives the hollow tooth ring 212 to rotate, and the hollow tooth ring 212 drives the driven gear 2131 to rotate synchronously and in the same direction to control the clamping plate 213 to rotate and clamp and fix the corrugated pipe body 4.

[0032] A sealing air inlet member 23 is installed on the limiting plate 22 of the fixed fixture 2. The sealing air inlet member 23 includes a sealing plate 231, an annular sealing airbag 232, a pressing plate 233, an air inlet pipe 234, and a first cylinder 235. One side of the sealing plate 231 is fixedly connected to one side of the annular sealing airbag 232. The pressing plate 233 is attached to the other side of the annular sealing airbag 232. A central position of the pressing plate 233 is fixedly connected to the air inlet pipe 234. The air inlet pipe 234 passes through the centers of the annular sealing airbag 232 and the pressing plate 233. An activity hole matching the air inlet pipe 234 is formed at the center of the pressing plate 233. When the pressing plate 233 pushes the annular sealing airbag 232, the sealing plate 231 is engaged with one end of the corrugated pipe body 4 to seal one end of the corrugated pipe body 4. A sleeve 41 is provided at one end of the corrugated pipe body 4. An installation step is provided between the sleeve 41 and the corrugated pipe body 4. The sealing plate 231 abuts against the installation step to achieve the first layer of sealing. The pressing plate 233 squeezes the annular sealing airbag 232 to deform, so that the diameter of the annular sealing airbag 232 increases until the annular sealing airbag 232 closely adheres to the inner wall of the corrugated pipe body 4 to achieve the effect of the second layer of sealing. The pressing plate 233 is pushed to move by the first cylinder 235. As the pressing plate 233 approaches, the air inlet pipe 234 extends into the interior of the corrugated pipe body 4 through the activity hole. The other side of the air inlet pipe 234 penetrates the limiting plate 22 of the fixed fixture 2 and is connected to an inflation device. The inflation device is a variable-frequency air pump, and the air inlet pipe 234 is used to inflate the corrugated pipe body 4.

[0033] A tightening and sealing member 32 is provided on the limiting plate 22 of the movable fixture 3. The tightening and sealing member 32 includes a tightening plate 321, a tightening airbag 322, and a second cylinder 323. A tightening airbag 322 is provided on one side of the tightening plate 321. The other side of the tightening plate 321 is connected to the output end of the second cylinder 323. The second cylinder 323 is installed on the limiting plate 22. The second cylinder 323 drives the tightening plate 321 and the tightening airbag 322 to move towards the corrugated pipe body 4. Since there is no sleeve 41 at one end of the corrugated pipe body 4 close to the movable fixture 3, the tightening airbag 322 directly abuts against the end of the corrugated pipe body 4 and adjusts according to the shape of the end of the corrugated pipe body 4 by itself. Under the extrusion force, the pipe orifice of the corrugated pipe body 4 sinks into the tightening airbag 322, causing the tightening airbag 322 to deform, and sealing the pipe orifice of the corrugated pipe body 4.

[0034] A second chute 13 is provided on the detection base 1, and a detection assembly 5 is movably connected to the second chute 13. The detection assembly 5 includes a moving detection plate 51, a telescopic frame 52, a third cylinder 53 and a fourth cylinder 54. The moving detection plate 51 is movably connected through the telescopic frame 52. The third cylinder 53 is arranged on the corresponding support plate 211 of the fixed fixture 2, and the output end of the third cylinder 53 is connected to one end of the parallel moving detection plate 51 for controlling the equidistant movement of all the moving detection plates 51 in the second chute 13 to adjust the overall position of the moving detection plate 51. At the same time, a fourth cylinder 54 is arranged at the other end of the parallel moving detection plate 51. The fourth cylinder 54 is used to control the distance between two adjacent moving detection plates 51. When the fourth cylinder 54 extends, the distance between two adjacent moving detection plates 51 increases. Correspondingly, an electric telescopic rod 511 and an intelligent sensor module are arranged on the moving detection plate 51. The intelligent sensor module includes a pressure sensor, an acoustic emission sensor and an intelligent control terminal. The upper end of the electric telescopic rod 511 is equipped with a pressure sensor. After the corrugated pipe body 4 is fixed, the acoustic emission sensors are arranged on both sides of the corrugated pipe body 4. The two acoustic emission sensors are symmetrically arranged at a position horizontal to the corrugated pipe body 4. The pressure sensor and the acoustic emission sensor are arranged along the axial direction of the corrugated pipe body 4 to monitor the local pressure change. The acoustic emission sensor captures the high-frequency acoustic wave signal during leakage. The intelligent control terminal integrates an AI algorithm to process the sensor data in real time, calculate the slope of the pressure change per unit time, extract the pressure fluctuation amplitude, use Kalman filtering to eliminate the vibration noise of the air pump, extract the true pressure decay trend, separate the leakage signal from the background noise through wavelet transform, extract the time-domain characteristics and frequency-domain characteristics of the acoustic emission signal, convert the detection results of the pressure sensor and the acoustic emission sensor into confidence levels, and determine the leakage probability through a fusion rule. The acoustic emission sensor calculates the initial coordinates (x0, y0) of the leakage point through TDOA, and uses the coordinates (x1, y1) of the lowest local pressure detected by the pressure sensor as a correction reference to output the final coordinates (x, y) = α(x0, y0) + (1 - α)(x1, y1), where α is a weight coefficient dynamically adjusted by the signal strength. Through the intelligent diagnosis model, a pressure-time curve and the coordinates of the leakage point are generated.

[0035] In order to better demonstrate the test process of the intelligent sealing test device for HDPE double-wall corrugated pipes, this embodiment now proposes a test method for the intelligent sealing test device for HDPE double-wall corrugated pipes, including the following steps:

[0036] Step 1: Place the bellows body 4 on the detection base 1, insert both ends into the insertion interfaces respectively, operate the driving gear 214 to drive the clamping plate 213 to clamp and fix both ends of the bellows body 4. The sleeve 41 abuts against the installation step of the sealing plate 231 to form the first layer of seal. Start the first cylinder 235 to push the extrusion plate 233 to compress the annular sealing airbag 232, making it expand and fit the inner wall of the bellows to complete the second layer of seal. The motor drives the lead screw 11 to rotate, and the movable fixture 3 moves along the first chute 12 to tighten the bellows body 4. The second cylinder 323 pushes the pressing airbag 322 to press the pipe orifice to achieve adaptive sealing;

[0037] Step 2: The third cylinder 53 pushes the movable detection plate 51 to adjust the distance from the fixed fixture 2, and the fourth cylinder 54 controls and adjusts the distance between the movable detection plates 51. The pressure sensors are distributed axially along the bellows body 4 at equal intervals. At this time, the electric telescopic rod 511 pushes the pressure sensors to contact the bellows body 4. According to the corrugated grooves of the bellows body 4, using the periodic concave and convex structure on the outer wall of the bellows body 4, the pressure sensors can directly monitor the deformation pressure of the wave crests / troughs to reflect the internal sealing state;

[0038] Step 3: Install the acoustic emission sensor, and fill the test gas into the bellows body 4 through the air inlet pipe 234. The variable frequency air pump increases the pressure step by step according to the preset pressure curve of 0.1 MPa → 0.3 MPa. The pressure sensors monitor the pressure inside the pipe in real time. After reaching the target pressure, keep the pressure constant for 5 minutes to ensure the system stability;

[0039] Step 4: The pressure sensors continuously record the pressure decay rate. If the pressure drop rate exceeds the threshold, trigger a leakage alarm. The third cylinder 53 drives the movable detection plate 51 to drive the pressure sensors to move axially along the bellows body 4 to focus on detecting the local pressure abnormal area. The acoustic emission sensor collects signals in the frequency band of 30 kHz - 150 kHz, calculates the leakage point coordinates through the time difference positioning method, and the intelligent control terminal generates a pressure-time curve and the three-dimensional coordinates of the leakage point.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An intelligent sealing test device for a HDPE double-wall corrugated pipe, comprising a detection base (1) and a detection component (5), characterized in that: A fixed fixture (2) is provided at one end of the detection base (1), and a lead screw (11) is provided at the other end of the detection base (1). A movable fixture (3) is installed on the lead screw (11). The fixed fixture (2) and the movable fixture (3) respectively clamp the two ends of the bellows body (4) and seal the ends of the bellows body (4). A second slide groove (13) is provided on the detection base (1), and a detection component (5) is movably connected to the second slide groove (13). The detection component (5) includes an intelligent sensor module, and three-dimensional positioning of the leakage point is achieved through multi-sensor data fusion.

2. The HDPE double-wall corrugated pipe intelligent sealing test device according to claim 1, characterized in that: The fixed clamp (2) and the movable clamp (3) both comprise a clamping assembly (21) and a limiting plate (22); the lower ends of the clamping assembly (21) and the limiting plate (22) on the fixed clamp (2) are both fixedly connected to the detection base (1); the limiting plate (22) on the fixed clamp (2) is provided with a sealing air inlet component (23); the lower ends of the clamping assembly (21) and the limiting plate (22) on the movable clamp (3) are fixedly connected via a connecting plate (31); and a tightening sealing component (32) is provided on the limiting plate (22) on the movable clamp (3).

3. The HDPE double-wall corrugated pipe intelligent sealing test device according to claim 2, characterized in that: The detection base (1) is provided with a first sliding groove (12), and the connecting plate (31) is provided with a threaded sleeve (311) meshed with the lead screw (11), and the threaded sleeve (311) is movably connected to the first sliding groove (12).

4. The HDPE double-wall corrugated pipe intelligent sealing test device according to claim 2, characterized in that: The clamping assembly (21) comprises a support plate (211), a hollow toothed ring (212), a clamping plate (213) and a driving gear (214); the hollow toothed ring (212) is movably connected to the support plate (211) via a sliding ring; annularly distributed clamping plates (213) are equidistantly arranged on the support plate (211) of the outer ring of the hollow toothed ring (212); a driven gear (2131) is arranged at one end of the clamping plate (213); the driven gear (2131) is meshed with the hollow toothed ring (212); and the driving gear (214) is meshed with the hollow toothed ring (212).

5. The HDPE double-wall corrugated pipe intelligent sealing test device according to claim 2, characterized in that: The sealed air intake component (23) comprises a sealing plate (231), an annular sealing airbag (232), an extrusion plate (233), an air intake pipe (234) and a first cylinder (235). The sealing plate (231) and the extrusion plate (233) are respectively arranged on both sides of the annular sealing airbag (232). The air intake pipe (234) is fixedly connected to the center of the extrusion plate (233). The air intake pipe (234) passes through the annular sealing airbag (232) and the extrusion plate (233). One end of the air intake pipe (234) disposed outside the bellows body (4) is connected to an air intake device. The extrusion plate (233) is connected to the output end of the first cylinder (235).

6. The HDPE double-wall corrugated pipe intelligent sealing test device according to claim 5, characterized in that: A sleeve (41) is provided at one end of the bellows body (4), a mounting step is provided between the sleeve (41) and the bellows body (4), and the sealing plate (231) abuts against the mounting step.

7. The HDPE double-wall corrugated pipe intelligent sealing test device according to claim 2, characterized in that: The tightening seal (32) comprises a tightening plate (321), a tightening airbag (322) and a second cylinder (323); one side of the tightening plate (321) is provided with the tightening airbag (322); the other side of the tightening plate (321) is connected to the output end of the second cylinder (323); and the second cylinder (323) is mounted on the limit plate (22).

8. The HDPE double-wall corrugated pipe intelligent sealing test device according to claim 1, characterized in that: The detection assembly (5) comprises a movable detection plate (51), a telescopic frame (52), a third cylinder (53) and a fourth cylinder (54); the movable detection plate (51) is movably connected to the telescopic frame (52); and the third cylinder (53) and the fourth cylinder (54) are respectively arranged at two end positions of the movable detection plate (51) and the telescopic frame (52).

9. The HDPE double-wall corrugated pipe intelligent sealing test device according to claim 8, characterized in that: The mobile detection plate (51) is provided with an electric telescopic rod (511) and an intelligent sensor module, wherein the intelligent sensor module comprises a pressure sensor, an acoustic emission sensor and an intelligent control terminal. The upper end of the electric telescopic rod (511) is provided with a pressure sensor. After the bellows body (4) is fixed, the acoustic emission sensor is provided on both sides of the bellows body (4). The pressure sensor and the acoustic emission sensor are arranged along the axial direction of the bellows body (4) to monitor local pressure changes. The acoustic emission sensor captures high-frequency sound wave signals during leakage. The intelligent control terminal integrates an AI algorithm to process sensor data in real time, converts the detection results of the pressure sensor and the acoustic emission sensor into confidence, and determines the leakage probability through a fusion rule.

10. A method for testing the HDPE double-wall corrugated pipe intelligent sealing test device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Place the bellows body (4) on the detection base (1), and fix and seal the two ends of the bellows by using a fixed clamp (2) and a movable clamp (3) respectively; Step 2: The detection component (5) adjusts the distribution position of the intelligent sensor module; Step 3: Fill the bellows body (4) with test gas through the air inlet pipe (234), and the variable frequency air pump increases the pressure according to the preset pressure curve. The intelligent sensor module monitors the deformation pressure of the peak or trough of the bellows body (4), reflects the internal sealing state, and monitors the pressure in the tube in real time. When the target pressure is reached, the constant pressure is maintained for 5 minutes to ensure the stability of the system; Step 4: The intelligent sensor module generates the leak point coordinates and three-dimensional report based on the multi-sensor data fusion algorithm.

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