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

Abstract

The present invention discloses an intelligent sealing test device and test method for HDPE double-wall corrugated pipes, which belong to the technical field of pipeline sealing detection. An intelligent sealing test device for HDPE double-wall corrugated pipes, comprising a detection base and a detection assembly, wherein a fixed clamp is provided at one end of the detection base, and a lead screw is provided at the other end of the detection base, and a movable clamp is installed on the lead screw, and the fixed clamp and the movable clamp respectively clamp the two ends of the corrugated pipe body. An intelligent sealing test device and test method for HDPE double-wall corrugated pipes proposed by the present invention, by integrating an intelligent sensor module and combining an AI algorithm to process data in real time, can accurately identify the location of leakage points and calculate the probability of leakage. This intelligent solution greatly improves the accuracy and efficiency of detection and reduces the influence of human factors; the design of an annular sealing airbag and a tightening airbag is adopted, which can automatically adjust the sealing force 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 in particular to an intelligent sealing test device and a test method for a HDPE double-wall corrugated pipe. Background Art

[0002] HDPE double-wall corrugated pipe is widely used due to its lightweight, corrosion resistance, and high ring stiffness. However, its sealing performance directly impacts project safety. Traditional sealing testing methods rely heavily on manual pressurization and visual leak detection, which is inefficient and prone to missed detections. While existing technologies, such as pressure decay methods, can provide quantitative testing, they lack real-time data feedback and intelligent analysis capabilities, making them difficult to adapt to the demands 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 it with an AI algorithm to process data in real time, it can accurately identify the location of leakage points and calculate the leakage probability. The design of an annular sealing airbag and a tightening airbag ensures that corrugated pipes of different specifications can be effectively sealed, thereby solving the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent sealing test device for HDPE double-wall corrugated pipes, comprising a detection base and a detection assembly, wherein a fixed clamp is provided at one end of the detection base, and a lead screw is provided at the other end of the detection base, and a movable clamp is installed on the lead screw. The lead screw controls the movable clamp engaged therewith to move along the length direction of the detection base, and is used to clamp corrugated pipe bodies of different lengths. The fixed clamp and the movable clamp respectively clamp the two ends of the corrugated pipe body and seal the ends of the corrugated pipe body. A second slide groove is provided on the detection base, and a detection assembly is movably connected to the second slide groove. The detection assembly includes an intelligent sensor module, and three-dimensional positioning of the leakage point is achieved through multi-sensor data fusion.

[0005] Preferably, the fixed clamp and the movable clamp both include a clamping assembly and a limit plate, the clamping assembly and the lower end of the limit plate on the fixed clamp are fixedly connected to the detection base, a sealing air inlet part is installed on the limit plate on the fixed clamp, the clamping assembly and the lower end of the limit plate on the movable clamp are fixedly connected through a connecting plate, and a tightening seal is provided on the limit plate on the movable clamp.

[0006] Preferably, a first sliding groove is provided on the detection base, and the first sliding groove is used to limit the moving path of the movable clamp. A threaded sleeve engaged with the lead screw is provided on the connecting plate, and the threaded sleeve is movably connected to the first sliding groove.

[0007] Preferably, the clamping assembly includes a support plate, a hollow gear ring, a clamping plate and a driving gear. The hollow gear ring is movably connected to the support plate through a sliding ring. Annularly distributed clamping plates are equidistantly arranged on the support plate of the outer ring of the hollow gear ring. A driven gear is arranged at one end of the clamping plate. The driven gear is engaged with the hollow gear ring. The driving gear is engaged with the hollow gear ring. Under the control of the driving motor, the driving gear drives the hollow gear ring to rotate. The hollow gear ring drives the driven gear to rotate synchronously in the same direction, controls the rotation of the clamping plate, and clamps and fixes the corrugated tube body.

[0008] Preferably, the sealed air inlet component includes a sealing plate, an annular sealing airbag, an extrusion plate, an air inlet pipe and a first cylinder. A sealing plate and an extrusion plate are respectively provided on both sides of the annular sealing airbag. The air inlet pipe is fixedly connected to the center position of the extrusion plate. The air inlet pipe passes through the annular sealing airbag and the extrusion plate. One end of the air inlet pipe is placed outside the bellows body and is connected to the air inlet device. The extrusion plate is connected to the output end of the first cylinder. A movable hole matching the air inlet pipe is opened in the center of the extrusion plate. When the extrusion plate pushes the annular sealing airbag, the sealing plate is engaged with one end of the bellows body.

[0009] Preferably, a sleeve is provided at one end of the bellows body, and an installation step is provided between the sleeve and the bellows body. The sealing plate abuts against the installation step to serve as a first layer of sealing.

[0010] Preferably, the tightening seal includes a tightening plate, a tightening airbag and a second cylinder. A tightening airbag is provided on one side of the tightening plate, and the other side of the tightening plate is connected to the output end of the second cylinder. The second cylinder is installed on the limit plate, and the tightening plate and the tightening airbag are driven by the second cylinder to move toward the direction of the bellows body. The tube mouth of the bellows body is sunk into the tightening airbag, causing the tightening airbag to deform, thereby sealing the tube mouth of the bellows body.

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

[0012] Preferably, the mobile detection plate is provided with an electric telescopic rod and an intelligent sensor module, 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, and the acoustic emission sensor is arranged on both sides of the bellows body after the bellows body is fixed, and 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 sound wave signals during leakage, and the intelligent control terminal integrates AI algorithms to process sensor data in real time, convert the detection results of the pressure sensor and the acoustic emission sensor into confidence, and determine the leakage probability through fusion rules.

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

[0014] Step 1: Place the bellows body on the test base, and fix and seal both ends with a fixed fixture and a movable fixture respectively;

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

[0016] Step 3: Fill the bellows with test gas through the air inlet pipe. 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 to reflect the internal sealing status and monitors the pressure in the tube in real time. When the target pressure is reached, the constant pressure is maintained for 1 minute to ensure system stability.

[0017] Step 4: The intelligent sensor module generates the leak point coordinates and 3D report based on the multi-sensor data fusion algorithm.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention proposes 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 leak points and calculate the probability of leaks. This intelligent solution greatly improves the accuracy and efficiency of detection 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 slide groove and a variety of cylinders allows 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 mobile detection plate allows comprehensive and detailed pressure monitoring of the corrugated pipe. By real-time monitoring of local pressure changes and capturing high-frequency sound wave signals during leakage, not only can potential problems be discovered in the first time, but the source of the leak can also be quickly located, providing a guarantee for timely measures, thereby enhancing the safety of the entire system and the reliability of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the bellows body in a test state of the present invention;

[0021] Figure 2 This is the overall structure diagram of the HDPE double-wall corrugated pipe intelligent sealing test device of the present invention;

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

[0023] Figure 4 This is a diagram showing the state of the fixing fixture of the present invention clamping the bellows body;

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

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

[0026] In the figure: 1. detection base; 11. screw; 12. first slide; 13. second slide; 2. fixing fixture; 21. clamping assembly; 211. support plate; 212. hollow gear ring; 213. clamping plate; 2131. driven gear; 214. driving gear; 22. limit plate; 23. sealed air inlet; 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 seal; 321. tightening plate; 322. tightening airbag; 323. second cylinder; 4. bellows body; 41. sleeve; 5. detection assembly; 51. movable detection plate; 511. electric telescopic rod; 52. telescopic frame; 53. third cylinder; 54. fourth cylinder. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In order to solve the problem that the existing sealing test methods mostly rely on manual pressurization and visual leak detection, which are inefficient and prone to missed detection. In the existing technology, although the pressure decay method can be quantitatively detected, it lacks real-time data feedback and intelligent analysis capabilities, making it difficult to adapt to the needs of automated production. Figures 1-6 , this embodiment provides the following technical solutions:

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

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

[0031] The clamping assembly 21 includes a support plate 211, a hollow gear ring 212, a clamping plate 213 and a driving gear 214. The support plate 211 is provided with a plug-in interface. The hollow gear ring 212 is installed on the support plate 211 near the plug-in interface through a sliding ring. Annularly distributed clamping plates 213 are equidistantly arranged on the support plate 211 of the outer ring of the hollow gear ring 212. A driven gear 2131 is provided at one end of the clamping plate 213. The driven gear 2131 is engaged with the hollow gear ring 212, and the driving gear 214 is engaged with the hollow gear ring 212. Under the control of the driving motor, the driving gear 214 drives the hollow gear ring 212 to rotate, and the hollow gear ring 212 drives the driven gear 2131 to rotate synchronously in the same direction, controlling the rotation of the clamping plate 213 to clamp and fix the bellows body 4.

[0032] A sealed air intake part 23 is installed on the limiting plate 22 on the fixing fixture 2. The sealed air intake part 23 includes a sealing plate 231, an annular sealing airbag 232, an extrusion plate 233, an air intake 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, and the extrusion plate 233 fits the other side of the annular sealing airbag 232. The air intake pipe 234 is fixedly connected to the center position of the extrusion plate 233. The air intake pipe 234 passes through the center of the annular sealing airbag 232 and the extrusion plate 233. A movable hole matching the air intake pipe 234 is provided in the center of the extrusion plate 233. When the extrusion plate 233 pushes the annular sealing airbag 232, the sealing plate 231 is engaged with one end of the bellows body 4, sealing one end of the bellows body 4 Seal, a sleeve 41 is provided at one end of the bellows body 4, and an installation step is provided between the sleeve 41 and the bellows body 4, and the sealing plate 231 is against the installation step to play the first layer of sealing, and the extrusion 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 is tightly fitted to the inner wall of the bellows body 4, which plays the role of the second layer of sealing. The extrusion plate 233 is pushed to move by the first cylinder 235. As the extrusion plate 233 approaches, the air inlet pipe 234 extends into the interior of the bellows body 4 through the movable hole, and the other side of the air inlet pipe 234 passes through the limit plate 22 on the fixing fixture 2 and is connected to the inflation device. The inflation device is a variable frequency air pump, which uses the air inlet pipe 234 to inflate the bellows body 4.

[0033] The locking cam 322 is pressed against the locking cam 323 to lock the locking cam 324. The locking cam 322 is pressed against the locking cam 324, and the locking cam 324 is pressed against the locking cam 324.

[0034] The detection base 1 is provided with a second slide 13, and the second slide 13 is movably connected with a detection assembly 5, which includes a mobile detection plate 51, a telescopic frame 52, a third cylinder 53 and a fourth cylinder 54. The mobile detection plate 51 is movably connected through the telescopic frame 52, and the third cylinder 53 is arranged on the supporting plate 211 corresponding to the fixed fixture 2. The output end of the third cylinder 53 is connected to one end of the mobile detection plate 51 arranged in parallel, so as to control the movement of all mobile detection plates 51 at equal distances in the second slide 13 and adjust the overall position of the mobile detection plate 51. At the same time, the other end of the mobile detection plate 51 arranged in parallel is provided with a fourth cylinder 54, which is used to control the distance between two adjacent mobile detection plates 51. When the fourth cylinder 54 is extended, the distance between the two adjacent mobile detection plates 51 increases. Accordingly, the mobile detection plate 51 is provided with an electric telescopic rod 511 and an intelligent sensor module. The sensor module includes a pressure sensor, an acoustic emission sensor and an intelligent control terminal. A pressure sensor is installed at the upper end of the electric telescopic rod 511. After the bellows body 4 is fixed, the acoustic emission sensor is set on both sides of the bellows body 4. The two acoustic emission sensors are symmetrically arranged at a position horizontal to the bellows body 4. The pressure sensor and the acoustic emission sensor are arranged axially along 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, calculate the slope of pressure change per unit time, extract the pressure fluctuation amplitude, use Kalman filtering to eliminate the air pump vibration noise, extract the true pressure attenuation 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, and determine the leakage probability through fusion rules. The acoustic emission sensor calculates the initial coordinates of the leakage point (x0, y0) through TDOA, and uses the coordinates of the local lowest pressure point (x1, y1) detected by the pressure sensor as a correction reference, outputting the final coordinates (x, y) = α(x0, y0) + (1-α)(x1, y1), where α is the weight coefficient, which is dynamically adjusted by the signal strength. The pressure-time curve and leakage point coordinates are generated through the intelligent diagnostic model.

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

[0036] Step 1: Place the bellows body 4 on the detection base 1, insert both ends into the plug-in interfaces respectively, drive the gear 214 to work, drive the clamping plate 213 to clamp and fix the two ends of the bellows body 4, and the sleeve 41 abuts against the installation step of the sealing plate 231 to form a first layer of sealing. Start the first cylinder 235 to push the extrusion plate 233 to compress the annular sealing airbag 232, so that it expands and fits the inner wall of the bellows to complete the second layer of sealing. The motor drives the lead screw 11 to rotate, and the movable clamp 3 moves along the first slide groove 12 to tighten the bellows body 4. The second cylinder 323 pushes the tightening airbag 322 to press the pipe mouth to achieve adaptive sealing;

[0037] Step 2: The third cylinder 53 pushes the mobile detection plate 51 to adjust the distance from the fixed fixture 2. The fourth cylinder 54 controls the distance between the mobile detection plates 51. The pressure sensors are evenly distributed along the axial direction of the bellows body 4. At this time, the electric telescopic rod 511 pushes the pressure sensors into contact with the bellows body 4. According to the positioning of the corrugated groove of the bellows body 4 and the periodic concave-convex structure of the outer wall of the bellows body 4, the pressure sensors can directly monitor the deformation pressure of the peaks and troughs, reflecting the internal sealing status.

[0038] Step 3: Install the acoustic emission sensor, fill the bellows body 4 with test gas through the air inlet pipe 234, and use the variable frequency air pump to increase the pressure in steps of 0.1MPa→0.3MPa according to the preset pressure curve. The pressure sensor monitors the pressure in the pipe in real time. When the target pressure is reached, maintain the constant pressure for 5 minutes to ensure system stability.

[0039] Step 4: The pressure sensor continuously records the pressure decay rate. If the pressure drop rate exceeds the threshold, a leakage alarm is triggered. The third cylinder 53 drives the mobile detection plate 51 to drive the pressure sensor to move axially along the bellows body 4, focusing on detecting the local abnormal pressure area. The acoustic emission sensor collects 30kHz-150kHz frequency band signals, calculates the coordinates of the leakage point 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 document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An intelligent sealing test device for HDPE double-wall corrugated pipe, comprising a detection base (1) and a detection component (5), characterized in that: One end of the detection base (1) is provided with a fixed fixture (2), and the other end of the detection base (1) is provided with a lead screw (11), and a movable fixture (3) is installed on the lead screw (11), and 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), and 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), and the detection component (5) includes an intelligent sensor module, and realizes three-dimensional positioning of the leakage point through multi-sensor data fusion; The fixed fixture (2) and the movable fixture (3) both include 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 fixture (2) are fixedly connected to the detection base (1); the limiting plate (22) on the fixed fixture (2) is provided with a sealing air inlet member (23); the lower ends of the clamping assembly (21) and the limiting plate (22) on the movable fixture (3) are fixedly connected via a connecting plate (31); and the limiting plate (22) on the movable fixture (3) is provided with a tightening sealing member (32); The clamping assembly (21) comprises a support plate (211), a hollow gear ring (212), a clamping plate (213) and a driving gear (214); the hollow gear 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) on the outer ring of the hollow gear 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 gear ring (212); and the driving gear (214) is meshed with the hollow gear ring (212); The sealed air intake member (23) comprises a sealing plate (231), an annular sealing airbag (232), an extrusion plate (233), an air intake pipe (234) and a first air cylinder (235). The sealing plate (231) and the extrusion plate (233) are respectively provided 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 air cylinder (235). The tightening seal (32) comprises a tightening plate (321), a tightening airbag (322) and a second cylinder (323). The tightening airbag (322) is provided on one side of the tightening plate (321), and 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).

2. The intelligent sealing test device for HDPE double-wall corrugated pipe according to claim 1, 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) engaged with the lead screw (11), and the threaded sleeve (311) is movably connected to the first sliding groove (12).

3. The intelligent sealing test device for HDPE double-wall corrugated pipe according to claim 1, 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.

4. The intelligent sealing test device for HDPE double-wall corrugated pipe 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); 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).

5. The intelligent sealing test device for HDPE double-wall corrugated pipe according to claim 4, characterized in that: The mobile detection plate (51) is provided with an electric telescopic rod (511) and an intelligent sensor module. 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 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 when leaking. 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 fusion rules.

6. A method for testing the HDPE double-wall corrugated pipe intelligent sealing test device according to any one of claims 1 to 5, characterized in that: The following steps are included: Step 1: Place the bellows body (4) on the detection base (1), and fix and seal the two ends respectively by a fixed clamp (2) and a movable clamp (3); 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) to reflect the internal sealing state, monitors the pressure in the pipe in real time, and maintains a constant pressure for 5 minutes after reaching the target pressure to ensure the stability of the system; Step 4: The intelligent sensor module generates the coordinates of the leakage point and a three-dimensional report based on the multi-sensor data fusion algorithm.

Images