A device and method for detecting the lap joint quality of waterproof coiled material with special-shaped surface

Abstract

This invention belongs to the field of building waterproofing testing technology, and discloses a device and method for testing the overlap quality of waterproof membranes on irregular surfaces. The testing device includes a bonding mechanism, a testing mechanism, a control module, and a support mechanism. The bonding mechanism includes a flexible sealing cover, multiple adjusting rods, and a vacuum pump. The flexible sealing cover is made of flexible sealing material and has an L-shaped side cross-section, including a vertical surface and a bottom surface, which are integrated into a single structure. The vertical surface is a fully enclosed structure, and the central area of ​​the bottom surface has a hollow structure. This invention uses a deformable flexible sealing cover, combined with multiple adjustable length adjusting rods to achieve flexible deformation of the sealing cover, which can conform to various irregular surface contours such as building pipe roots, internal and external corners, and curved roofs. The bottom surface of the sealing cover integrates multiple vacuum suction cups, achieving a highly reliable seal under the synergistic effect of vacuum suction and pressure inside the sealed testing chamber. This solves the technical problems of existing devices being difficult to adapt to complex irregular surfaces and prone to sealing failure.

Description

Technical Field

[0001] This invention belongs to the field of building waterproofing testing technology, and relates to a device and method for testing the overlap quality of waterproof membranes for irregular surfaces. Background Technology

[0002] The overlapping areas of waterproof membranes are a critical weak point in building waterproofing projects, especially in irregularly shaped areas such as pipe roots, corners, and curved roofs. Due to the irregular surface and difficulty of construction, problems such as loose overlaps and seal failure are prone to occur. Existing testing devices are mostly designed for flat surfaces and cannot adapt to the tight seals of complex irregular surfaces, which can easily lead to media leakage and insufficient testing accuracy. Furthermore, the fixed sealing structure of the testing devices cannot be adjusted to the contours of irregular surfaces, resulting in poor adaptability. At the same time, the single vacuum or pressure sealing mode of existing testing devices is insufficient to meet the needs of complex environmental conditions, resulting in low testing reliability and failing to effectively guarantee the quality of waterproofing projects.

[0003] Therefore, developing a waterproof membrane overlap quality testing device and method that can be adapted to various irregular surfaces and is easy to operate has become an urgent technical problem to be solved in this field. Summary of the Invention

[0004] To address the technical problem described in the background section that existing waterproof membrane overlap quality testing devices cannot adapt to tight sealing of complex curved surfaces and irregular irregular shapes, resulting in poor sealing effect, insufficient testing accuracy, and inability to effectively evaluate the overlap quality of waterproof membranes, this invention provides a waterproof membrane overlap quality testing device and method for irregular surfaces. It adopts a local fixed-point testing method for accurate testing and adapts to diverse on-site testing needs.

[0005] This invention solves the above-mentioned technical problems by providing a device and method for detecting the overlap quality of waterproof membranes with irregular surfaces, including a bonding mechanism, a detection mechanism, a control module, and a support mechanism; the bonding mechanism includes a flexible sealing cover, multiple adjusting rods, and a vacuum pump; the flexible sealing cover is made of flexible sealing material, with an L-shaped side cross-section, including a vertical surface and a bottom surface, which are integrated into a single structure, wherein the vertical surface is a fully enclosed structure, and the bottom surface is a centrally hollow structure; multiple first pre-embedded metal connectors are provided on the vertical surface of the flexible sealing cover, and the tail end of each adjusting rod is hinged to the outer wall of the vertical surface of the flexible sealing cover through the first pre-embedded metal connectors, and the length of the adjusting rod is adjustable and locked by a locking component; The inner ring of the bottom surface of the flexible sealing cover is integrally formed with 6 to 8 flexible protrusions. Each of the flexible protrusions is connected to a vacuum pump through an air pipe to form a vacuum suction cup. Under the action of vacuum suction, the bottom surface of the flexible sealing cover is tightly attached to the surface of the waterproof membrane, thereby forming a sealed detection chamber together with the vertical surface, bottom surface and overlapping surface of the waterproof membrane. The detection mechanism includes a pressure sensor, a medium storage tank, a delivery pump, and a vacuum pump; the pressure sensor is fixed to the inner side of the vertical surface of the flexible sealing cover; the medium storage tank supplies liquid to the detection chamber through the delivery pump, and the vacuum pump is connected to the detection chamber; The control module includes a controller, a display screen, and an alarm unit. The control module is electrically connected to the bonding mechanism and the detection mechanism, and is used to control the working status of the bonding mechanism and the detection mechanism, and to receive and process the data from the detection mechanism and output the detection results. The support mechanism includes a movable base and a support vertical rod, with the support vertical rod fixed on the movable base. The movable base is used to house the vacuum pump, delivery pump, medium storage tank, and control module. The support vertical rod is equipped with a support horizontal rod that can slide up and down for adjustment. A mounting base is fixed at the end of the support horizontal rod. The mounting base is hinged to the head end of the adjustment rod through a support stud fixed thereon and the angle is fixed by a locking device.

[0006] Furthermore, the flexible sealing cover is made of at least one of transparent food-grade silicone and nitrile rubber, with a thickness of 3-5 mm on the front surface, a thickness of 5-7 mm on the bottom surface, a width of 40-60 mm on the bottom surface, and a maximum outer diameter of 200-300 mm on the bottom surface after unfolding.

[0007] Furthermore, the adjusting rods are evenly distributed on the outside of the flexible sealing cover, and a first embedded metal connector is pre-embedded on the vertical surface of the flexible sealing cover; the tail end of the adjusting rod is hinged to the first embedded metal connector, and the head end of the adjusting rod is hinged to the support stud.

[0008] Furthermore, the diameter of the flexible boss, which serves as a vacuum suction cup, is 25–30 mm, the height is 3–4 mm, and the center-to-center distance between two adjacent flexible bosses is 30–40 mm.

[0009] Furthermore, the air pipe includes a main air pipe and branch air pipes. One end of the main air pipe is connected to a vacuum pump, and the other end is connected to 6 to 8 branch air pipes. Each branch air pipe is connected to a vacuum suction cup.

[0010] Furthermore, the bottom outer ring of the flexible sealing cover is provided with an annular groove, and a sealing gasket made of nitrile rubber is embedded in the annular groove.

[0011] Furthermore, the width of the annular groove is 8.5–10.5 mm, and the depth is 2.5–3 mm; the thickness of the sealing gasket is 3 mm, and the width is 8–10 mm.

[0012] Furthermore, the distance between the inner side of the sealing gasket and the outer side of the vacuum suction cup is 10-15 mm.

[0013] Furthermore, a two-position three-way solenoid valve is provided between the detection chamber and the vacuum pump and the delivery pump, and the two-position three-way solenoid valve is connected to the controller circuit; a medium connector is provided on the flexible sealing cover, and the medium connector is fixed to the vertical surface of the flexible sealing cover by a second pre-embedded metal connector. One end of the medium connector is connected to the detection chamber, and the other end is connected to the two-position three-way solenoid valve; the two-position three-way solenoid valve is used to selectively connect the detection chamber to the vacuum pump or the detection chamber to the delivery pump.

[0014] Furthermore, the pressure sensor is fixed to the inner wall of the flexible sealing cover via a first pre-embedded metal connector.

[0015] Furthermore, the medium storage tank contains soapy water or clean water.

[0016] Furthermore, the supporting vertical rod has a circular cross-section with a diameter of 15-20mm, and the height of the supporting horizontal rod is adjustable from 80 to 150cm.

[0017] Furthermore, a storage battery is installed on the mobile base, and the storage battery is connected to the controller, the two-position three-way solenoid valve, the delivery pump and the vacuum pump circuit respectively to provide working power.

[0018] This invention also provides a method for inspecting the overlap quality of waterproof membranes with irregular surfaces, which utilizes the various overlap quality inspection devices for waterproof membranes with irregular surfaces described above, and includes the following steps: S1: Fitting and fixing: Adjust the angle and length of each adjusting rod according to the contour of the irregular surface so that the flexible sealing cover covers the overlapping part of the waterproof membrane. Start the vacuum pump and use the vacuum suction cup to press and fix the bottom surface of the flexible sealing cover to the surface of the waterproof membrane to ensure the formation of a sealed testing chamber. S2: Sealing test: A small amount of test medium is injected into the test chamber through a delivery pump, so that the test medium forms a liquid layer with a height of 3-4 mm at the bottom of the test chamber, and then the delivery pump is turned off; depending on the test conditions, the test chamber is either evacuated or pressurized by introducing test medium. S3: Result Determination: If pressure testing is used: if the pressure in the testing chamber does not drop significantly during the pressure holding period and no air bubbles are released at the overlap seam, it is considered qualified; if the pressure drops significantly or air bubbles are continuously released, it is considered unqualified. If vacuum testing is used: if the vacuum level does not decrease significantly during the pressure holding period and no bubbles are generated at the overlap seam, it is considered qualified; if the vacuum level decreases significantly or bubbles are generated, it is considered unqualified.

[0019] Furthermore, in step S2, the pressure range of the pressurization process is 0.1 to 0.3 MPa, and the pressure holding time is 5 to 10 min; the vacuum degree of the vacuuming process is -0.08 to -0.05 MPa, and the pressure holding time is 5 to 10 min.

[0020] Furthermore, the inspection process adopts a local fixed-point inspection method, and selects several key inspection points for inspection based on the size and contour differences of the irregular surface; among them, 3 to 4 inspection points are evenly selected along the bottom circumference of the pipe root, 2 to 3 inspection points are selected at the inside and outside corners, and 3 to 5 inspection points are selected in sections along the lap joint of the curved roof; by summarizing the inspection data of all inspection points, the lap quality of the entire inspection area is qualitatively judged. Beneficial effects

[0021] 1. The flexible sealing cover can be elastically deformed, and combined with the adjustment of the angle and length of the adjustment rod, it can adapt to various irregular surfaces such as pipe roots, inside and outside corners, and curved roofs, solving the technical problem that existing devices cannot adapt to irregular surfaces.

[0022] 2. This invention utilizes the internal cavity pressure formed by the L-shaped cross-section of the flexible sealing cover and the uniform adsorption force of 6-8 small-diameter vacuum suction cups to form a synergistic pressing effect, effectively enhancing the fit of the sealing gasket, completely eliminating gaps and leakage of the detection medium, significantly improving sealing reliability, avoiding detection failure due to sealing failure, and improving detection stability and accuracy.

[0023] 3. This invention supports two detection modes: vacuuming and pressurization. It can be flexibly switched according to different working conditions and detection requirements, and has a wide range of applications.

[0024] 4. This invention has a high degree of automation and fast detection speed, which can quickly determine the sealing quality of the overlapping parts, avoid missed detection and false detection, and is suitable for rapid detection on construction site; the device has a compact structure and is highly portable, which facilitates on-site construction detection and maintenance and reduces detection costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the waterproof membrane overlap quality detection device for irregular surfaces according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the composition of the bonding mechanism according to an embodiment of the present invention; Figure 3 for Figure 2 Enlarged view at point A in the middle; Figure 4 This is a schematic cross-sectional view of the flexible sealing cover according to an embodiment of the present invention; Figure 5 for Figure 4 Enlarged view at point B; Figure 6 for Figure 4 Enlarged view at point C; Figure 7 This is a bottom view of the flexible sealing cover according to an embodiment of the present invention; Figure 8This is a schematic diagram of the adjusting rod component structure according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structural composition of the detection mechanism and control module according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the supporting mechanism structure according to an embodiment of the present invention; In the diagram: 1. Fitting mechanism; 11. Flexible sealing cover; 111. Vertical surface; 112. Bottom surface; 113. Annular groove; 114. First embedded metal connector; 115. Vacuum suction cup; 116. Second embedded metal connector; 117. Main air pipe; 118. Branch air pipe; 12. Adjusting rod; 121. Locking component; 13. Vacuum pump; 14. Sealing gasket; 15. Media connector; 2. Detection mechanism; 21. Pressure sensor; 22. Media storage tank; 23. Delivery pump; 24. Two-position three-way solenoid valve; 3. Control module; 31. Controller; 32. Display screen; 33. Alarm unit; 4. Support mechanism; 41. Movable base; 42. Supporting vertical rod; 43. Supporting horizontal rod; 44. Mounting base; 45. Support stud; 5. Detection chamber; 6. Battery. Detailed Implementation

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Example 1, please refer to Figures 1 to 10This embodiment provides a device for detecting the overlap quality of waterproof membrane with irregular surfaces, including a bonding mechanism 1, a detection mechanism 2, a control module 3, and a support mechanism 4. The bonding mechanism 1 includes a flexible sealing cover 11, multiple adjusting rods 12, and a vacuum pump 13. The flexible sealing cover 11 is made of flexible sealing material and has an L-shaped side cross-section, including a vertical surface 111 and a bottom surface 112, which are integrated structures. The vertical surface 111 is a fully enclosed structure, and the bottom surface 112 is a centrally hollow structure to expose the overlap seam of the waterproof membrane for easy detection. Multiple first pre-embedded metal connectors 114 are provided on the vertical surface 111 of the flexible sealing cover 11. The tail end of each adjusting rod 12 is hinged to the outer wall of the vertical surface 111 of the flexible sealing cover 11 through the first pre-embedded metal connector 114. The length of the adjusting rod 12 is adjustable and locked by a locking member 121. The inner ring of the bottom surface 112 of the flexible sealing cover 11 is integrally formed with 6 to 8 flexible protrusions. Each of the flexible protrusions is connected to the vacuum pump 13 through an air pipe to form a vacuum suction cup 115. Under the action of vacuum suction, the bottom surface 112 of the flexible sealing cover 11 is tightly attached to the surface of the waterproof membrane, thereby forming a sealed detection chamber 5 together with the vertical surface 111, the bottom surface 112 and the overlapping surface of the waterproof membrane of the flexible sealing cover 11. The detection mechanism 2 includes a pressure sensor 21, a medium storage tank 22, a delivery pump 23, and a vacuum pump 13; the pressure sensor 21 is fixed inside the vertical surface 111 of the flexible sealing cover 11; the medium storage tank 22 supplies liquid to the detection chamber 5 through the delivery pump 23, and the vacuum pump 13 is connected to the detection chamber 5 to realize the vacuuming operation.

[0030] The control module 3 includes a controller 31, a display screen 32, and an alarm unit 33. The control module 3 is electrically connected to the bonding mechanism 1 and the detection mechanism 2, and is used to control the working status of the bonding mechanism 1 and the detection mechanism 2, and to receive and process the data of the detection mechanism and output the detection results. The support mechanism 4 includes a movable base 41 and a support vertical rod 42, with the support vertical rod 42 fixed on the movable base 41. The movable base 41 is used to house the vacuum pump 13, the delivery pump 23, the medium storage tank 22, and the control module 3. The support vertical rod 42 is provided with a support horizontal rod 43 that can slide up and down for adjustment. The end of the support horizontal rod 43 is fixed with a mounting base 44. The mounting base 44 is hinged to the head end of the adjusting rod 12 by a support stud 45 fixed thereon and the angle is fixed by a locking member 121.

[0031] In this embodiment 1, the flexible sealing cover 11 is made of transparent food-grade silicone material with a transparency of ≥90%. The inner surface is treated with an anti-fouling coating. The thickness of the vertical surface 111 is 3-5mm, the thickness of the bottom surface 112 is 5-7mm, and the width of the bottom surface 112 is 40-60mm. After unfolding, the maximum outer diameter of the bottom surface is 200-300mm, which can achieve 360° flexible deformation to adapt to irregular surfaces with different curvatures. The vertical surface 111 is designed with a thickness of 3-5mm to enhance structural rigidity and avoid bulging deformation of the vertical surface 111 during testing and pressurization, while retaining sufficient flexibility so as not to affect the sealing cover's fit to the contour of the irregular surface. The size design of the flexible sealing cover 11 is suitable for local fixed-point testing, which makes it easy to flexibly select multiple testing points for irregular surfaces of different sizes such as pipe roots and internal and external corners, taking into account both portability and testing coverage.

[0032] Please refer to Figure 1 , Figure 2 and Figure 8 Adjusting rods 12 are evenly distributed on the outside of the flexible sealing cover 11. A first embedded metal connector 114 is pre-embedded on the vertical surface 111 of the flexible sealing cover 11. The tail end of the adjusting rod 12 is hinged to the first embedded metal connector 114, and the head end of the adjusting rod 12 is hinged to the support stud 45. By adjusting the length of multiple adjusting rods 12 and locking them with locking parts 121, the shape of the flexible sealing cover 11 can be adjusted to adapt to the fitting requirements of different irregular surfaces.

[0033] In this embodiment 1, the diameter of the flexible boss, which serves as the vacuum suction cup 115, is 25-30 mm, the height is 3-4 mm, and the center-to-center distance between two adjacent flexible bosses is 30-40 mm.

[0034] Please refer to Figures 1 to 4 ,as well as Figure 9 In Example 1, the air pipe includes a main air pipe 117 and branch air pipes 118. One end of the main air pipe 117 is connected to a vacuum pump 13, and the other end is connected to 6 to 8 branch air pipes 118. Each branch air pipe 118 is connected to a vacuum suction cup 115. The vacuum suction cup 115 is connected to the vacuum pump 13 through the air pipe. The vacuum pump 13 is electrically connected to the control module 3 to realize the automatic adsorption and release of the vacuum suction cup 115.

[0035] Please refer to Figures 1 to 4 ,as well as Figure 9The bottom surface 111 of the flexible sealing cover 11 has an annular groove 113 around its outer ring. The width of the annular groove 113 is 8.5-10.5 mm, and the depth is 2.5-3 mm. A nitrile rubber sealing gasket 14 is embedded in the annular groove 113. The sealing gasket 14 is 3 mm thick and 8-10 mm wide. The above-mentioned dimensions are matched so that after the sealing gasket 14 is embedded, its lower end face is flush with the bottom surface of the flexible sealing cover 11 and with the lower bottom surface of the vacuum suction cup 115. The distance between the inner side of the sealing gasket 14 and the outer side of the vacuum suction cup 115 is 10-15 mm to avoid mutual interference, and at the same time, to ensure that the adsorption force of the vacuum suction cup 115 can be evenly transmitted to the sealing gasket 14, achieving a tight fit in conjunction with the pressure inside the detection chamber 5.

[0036] Please refer to Figures 1 to 5 ,as well as Figure 9 A two-position three-way solenoid valve 24 is provided between the detection chamber 5 and the vacuum pump 13 and the delivery pump 23. The two-position three-way solenoid valve 24 is electrically connected to the controller 31. A medium connector 15 is provided on the flexible sealing cover 11. The medium connector 15 is fixed to the vertical surface 111 of the flexible sealing cover 11 by a second pre-embedded metal connector 116. One end of the medium connector 15 is connected to the detection chamber 5, and the other end is connected to the two-position three-way solenoid valve 24. The two-position three-way solenoid valve 24 is used to selectively connect the detection chamber 5 to the vacuum pump 13 or the detection chamber 5 to the delivery pump 23.

[0037] Please refer to Figure 4 , Figure 6 ,as well as Figure 9 The pressure sensor 21 is fixed to the inner wall of the vertical surface 111 of the flexible sealing cover 11 via a first pre-embedded metal connector 114, and detects the pressure changes in the sealed detection chamber 5 in real time. The medium storage tank 22 stores soapy water or clean water. Soapy water makes it easier to observe bubbles and determine the location of leakage. The delivery pump 23 delivers the soapy water to the detection chamber 5 at a delivery speed of 10-20 mL / min. If there is leakage at the overlap of the waterproof membrane, the pressure in the detection chamber 5 will change, and bubbles can be observed at the leakage point through the transparent flexible sealing cover.

[0038] Please refer to Figure 1 , Figure 10 The supporting vertical rod 42 has a circular cross-section with a diameter of 15-20mm, and the supporting horizontal rod 43 has a height adjustment range of 80-150cm. A storage battery 6 is installed on the movable base 41. The storage battery 6 is electrically connected to the controller 31, the two-position three-way solenoid valve 24, the delivery pump 13, and the vacuum pump 23 to provide working power.

[0039] Embodiment 1 of the present invention also provides a method for detecting the overlap quality of waterproof membranes with irregular surfaces, which applies the various waterproof membrane overlap quality detection devices for irregular surfaces described above, and includes the following steps: S1: Fitting and fixing: Adjust the angle and length of each adjusting rod 12 according to the contour of the irregular surface so that the flexible sealing cover 11 covers the overlapping part of the waterproof membrane. Start the vacuum pump 13 and use the vacuum suction cup 115 to press and fix the bottom surface 112 of the flexible sealing cover 11 to the surface of the waterproof membrane to ensure the formation of a sealed detection chamber 5. S2: Sealing test: A small amount of test medium is injected into the test chamber 5 through the delivery pump 23, so that the test medium forms a liquid layer with a height of 3-4 mm at the bottom of the test chamber 5, and then the delivery pump 8 is turned off; depending on the test conditions, the test chamber 5 is either evacuated or pressurized by introducing the test medium. S3: Result Determination: If pressure testing is used: if the pressure in test chamber 5 does not drop significantly during the pressure holding period and no bubbles are released at the overlap, it is considered qualified; if the pressure drops significantly or bubbles are continuously released, it is considered unqualified. If vacuum testing is used: if the vacuum level does not decrease significantly during the pressure holding period and no bubbles are generated at the overlap seam, it is considered qualified; if the vacuum level decreases significantly or bubbles are generated, it is considered unqualified.

[0040] In step S2, the pressure range of the pressurization process is 0.1 to 0.3 MPa, and the pressure holding time is 5 to 10 min; the vacuum degree of the vacuuming process is -0.08 to -0.05 MPa, and the pressure holding time is 5 to 10 min.

[0041] The inspection process adopts a local fixed-point inspection method, taking into account the size and contour differences of the irregular surface, and selects several key inspection points for inspection; among them, 3 to 4 inspection points are evenly selected along the bottom circumference of the pipe root, 2 to 3 inspection points are selected at the inside and outside corners, and 3 to 5 inspection points are selected in sections along the lap joint of the curved roof; by summarizing the inspection data of all inspection points, the lap quality of the entire inspection area is qualitatively judged, which ensures both inspection accuracy and inspection efficiency.

[0042] Example 2, taking the quality inspection of overlapping of waterproof membrane on irregularly shaped surfaces of building pipe roots as an example, uses the device and method of the present invention, and the specific steps are as follows: S1: Fitting and fixing: The sizes of the pipe roots vary greatly, with diameters ranging from 50 to 200 mm. Moreover, the space at the junction of the bottom of the pipe root and the roof or wall is narrow and the contour is irregular, making it impossible to adopt a comprehensive detection method. Therefore, in this embodiment, a local fixed-point detection mode is adopted. Four key detection points are evenly selected along the circumferential direction of the bottom of the pipe root, such as at an interval of 90°, and detection is carried out point by point. For the first detection point, according to the diameter of the pipe root, such as 100 mm, the adjusting rod 12 of the fitting mechanism is adjusted to make the L-shaped flexible seal cover 11 fit the arc surface of the pipe root. The flexible seal cover is covered on the overlapping part of the pipe root and the roof. The vacuum pump is started, and the power of the vacuum pump is 800 - 1200 W. The negative pressure is transmitted to 6 - 8 vacuum suction cups 115 through the main air pipe 117 and the branch air pipe 118, and the flexible seal cover 11 is fixed on the surface of the waterproof coiled material, ensuring that a sealed detection cavity 5 is formed between the flexible seal cover 11 and the waterproof coiled material, without air leakage or liquid leakage. The vertical surface 111 with a thickness of 3 - 5 mm can ensure the structural stability during adjustment, and at the same time flexibly fit the arc contour of the pipe root; the sealing structure between the vacuum suction cup 115 and the bottom surface 112 can already isolate the connection with the detection cavity 5.

[0043] S2: Sealing detection: The pressurization parameters are set through the control module 3, the pressure is 0.2 MPa, and the pressure holding time is 8 min. The delivery pump 23 is started to deliver the soapy water in the medium storage tank 22 to the sealed detection cavity 5 until the pressure in the detection cavity 5 reaches the preset value, then the delivery pump 23 is stopped and the pressure holding stage is entered; the pressure sensor 21 continuously detects the pressure in the detection cavity 5, and at the same time observes whether bubbles are generated in the detection cavity 5 through the transparent flexible seal cover 11. If the pressure does not drop and no bubbles continuously precipitate during the pressure holding period, it is determined that the sealing performance of the overlapping part at this detection point is qualified; if the pressure drops or bubbles continuously precipitate, it is determined that the sealing performance of this detection point is unqualified, and the leakage position is recorded. The bubbles are formed when the outside air enters the sealed detection cavity 5 through the leakage gap at the overlapping part and contacts the soapy water in the cavity, which can be used as an intuitive judgment basis for the existence of leakage at the overlapping part. At this time, the pressure water in the detection cavity 5 acts on the bottom surface of the L-shaped seal cover, forming a downward pressure, which acts together with the adsorption force of the vacuum suction cup to further press the sealing gasket tightly, ensuring tight sealing and avoiding misjudgment of leakage; the vertical surface with a thickness of 3 - 5 mm effectively resists the pressure in the cavity, avoids bulging and deformation, and ensures the detection accuracy; the sealing structure between the vacuum suction cup 115 and the bottom surface is stable, and will not affect the adsorption effect due to the pressure change in the detection cavity 5, nor will it cause pressure leakage in the detection cavity 5. In this embodiment, a pressurization detection method is adopted, which is suitable for the detection of special-shaped parts such as pipe roots with high requirements for sealing performance.

[0044] S3: Result determination: According to the steps of S1 - S2 above, the detection of the 4 detection points at the bottom of the pipe root is completed in sequence. The control module 3 integrates the detection data of the 4 detection points. If the indicators of all detection points are qualified, it is determined that the waterproofing membrane lapping quality at the pipe root part is qualified, and the display screen shows "qualified"; if the indicator of any detection point is unqualified, it is determined that the lapping quality at the pipe root part is unqualified, the display screen shows "unqualified", and the unqualified indicator, deviation value and the position of the corresponding detection point are marked, and the buzzer of the alarm unit 33 gives an alarm prompt.

[0045] Embodiment 3: Taking the lapping quality detection of the waterproofing membrane of an arched roof as an example, the vacuum detection method is adopted in Embodiment 3. Considering the characteristics of the large span and variable curvature of the arched roof, the local fixed-point detection method is also adopted in this embodiment. Three detection points are selected at intervals along the lapping seam of the arched roof, and the results are summarized after point-by-point detection, which improves the detection efficiency while ensuring the detection accuracy.

[0046] S1: Fitting and fixing: According to the curvature of the arched roof, adjust the length of the adjusting rod to make the flexible sealing cover 11 fit the surface of the arched roof. Cover the flexible sealing cover 11 on the lapping part of the first detection point, and start the vacuum pump 13. The power of the vacuum pump 13 is 800 - 1200W, and it is adsorbed and fixed by 6 - 8 small-diameter vacuum suction cups to ensure the formation of a sealed detection cavity 5.

[0047] S2: Sealing detection: Inject a small amount of soap water into the detection cavity 5 through the delivery pump 23 to form a liquid layer with a height of 3 - 4 mm at the bottom of the detection cavity 5, and then close the delivery pump 23; Set the vacuum extraction parameters, the vacuum degree is -0.06 MPa, and the pressure holding time is 10 min. Start the vacuum pump 13 to perform vacuum extraction on the detection cavity 5. The pressure sensor 21 detects the vacuum degree in real time. At this time, the negative pressure in the detection cavity 5 will cooperate with the structure of the bottom surface 112 to further compress the sealing gasket and strengthen the sealing effect; The sealing structure between the vacuum suction cup 115 and the bottom surface 112 is stable, and it will not affect the adsorption effect due to the pressure change in the detection cavity 5, nor will it cause pressure leakage in the detection cavity 5. If the vacuum degree does not decrease significantly and no bubbles are generated at the lapping seam during the pressure holding period, it is determined to be qualified; if the vacuum degree decreases significantly or bubbles are generated, it is determined to be unqualified, and there is leakage at this detection point, and bubbles will be sucked out or bubbles will be formed on the inner side of the lapping seam. In this Embodiment 3, through the stiffness design of the 3 - 5 mm thickened vertical surface 111, combined with the reasonable vacuum degree parameter matching of -0.08 - -0.05 MPa, and at the same time with the support of the adjusting rod 12 outside the vertical surface 111, the structural stability is double-guaranteed, which can effectively prevent the flexible sealing cover 11 from being sucked瘪 (I assume it should be "sucked瘪" which might be a wrong character, maybe "sucked flat"), ensure that the detection cavity 5 always maintains the shape of a complete cavity, does not affect the leakage observation and detection accuracy, and effectively solves the technical problem that the flexible sealing cover 11 is easily deformed and瘪塌 (again, "瘪塌" might be wrong, maybe "collapsed") during vacuum extraction.

[0048] S3: Result Judgment: Control module 3 integrates all test data from 3 test points. If all test points are qualified, the quality of the overlapping part of the curved roof is qualified. If any test point has a non-qualified indicator, the part is deemed unqualified, and the non-qualified indicator and the corresponding test point location are marked.

[0049] The above embodiments and accompanying drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the present invention do not depart from the spirit of the present invention and should also fall within the protection scope of the claims of the present invention. Other related technical structures not disclosed in detail in the present invention are existing technologies in the art.

Claims

1. A device for detecting the overlap quality of waterproof membranes with irregular surfaces, characterized in that: The system includes a bonding mechanism, a detection mechanism, a control module, and a support mechanism. The bonding mechanism includes a flexible sealing cover, multiple adjusting rods, and a vacuum pump. The flexible sealing cover is made of flexible sealing material and has an L-shaped side cross-section, including a vertical surface and a bottom surface, which are integrated into one structure. The vertical surface is a fully enclosed structure, and the bottom surface is a centrally hollow structure. Multiple first-embedded metal connectors are provided on the vertical surface of the flexible sealing cover. The tail end of each adjusting rod is hinged to the outer wall of the vertical surface of the flexible sealing cover through the first-embedded metal connector. The length of the adjusting rod is adjustable and locked in place by a locking component. The inner ring of the bottom surface of the flexible sealing cover is integrally formed with 6 to 8 flexible protrusions. Each of the flexible protrusions is connected to a vacuum pump through an air pipe to form a vacuum suction cup. Under the action of vacuum suction, the bottom surface of the flexible sealing cover is tightly attached to the surface of the waterproof membrane, thereby forming a sealed detection chamber together with the vertical surface, bottom surface and overlapping surface of the waterproof membrane. The detection mechanism includes a pressure sensor, a medium storage tank, a delivery pump, and a vacuum pump; the pressure sensor is fixed to the inner side of the vertical surface of the flexible sealing cover; the medium storage tank supplies liquid to the detection chamber through the delivery pump, and the vacuum pump is connected to the detection chamber; The control module includes a controller, a display screen, and an alarm unit. The control module is electrically connected to the bonding mechanism and the detection mechanism, and is used to control the working status of the bonding mechanism and the detection mechanism, and to receive and process the data from the detection mechanism and output the detection results. The support mechanism includes a movable base and a support vertical rod, with the support vertical rod fixed to the movable base; The movable base is used to place the vacuum pump, delivery pump, medium storage tank and control module; the support vertical rod is equipped with a support horizontal rod that can slide up and down, and the end of the support horizontal rod is fixed with a mounting base. The mounting base is hinged to the head end of the adjustment rod through the support stud fixed thereon and the angle is fixed by the locking device.

2. The device for detecting the overlap quality of waterproof membrane for irregular surfaces according to claim 1, characterized in that: The flexible sealing cover is made of at least one of transparent food-grade silicone and nitrile rubber.

3. The device for detecting the overlap quality of waterproof membrane for irregular surfaces according to claim 1, characterized in that: The adjusting rods are evenly distributed on the outside of the flexible sealing cover, and a first embedded metal connector is pre-embedded on the vertical surface of the flexible sealing cover; the tail end of the adjusting rod is hinged to the first embedded metal connector, and the head end of the adjusting rod is hinged to the support stud.

4. The device for detecting the overlap quality of waterproof membrane for irregular surfaces according to claim 1, characterized in that: The air pipe includes a main air pipe and branch air pipes. One end of the main air pipe is connected to a vacuum pump, and the other end is connected to 6 to 8 branch air pipes. Each branch air pipe is connected to a vacuum suction cup.

5. The device for detecting the overlap quality of waterproof membrane for irregular surfaces according to claim 1, characterized in that: The bottom outer ring of the flexible sealing cover is provided with an annular groove, and a sealing gasket made of nitrile rubber is embedded in the annular groove.

6. The device for detecting the overlap quality of waterproof membrane for irregular surfaces according to claim 1, characterized in that: A two-position three-way solenoid valve is provided between the detection chamber and the vacuum pump and the delivery pump. The two-position three-way solenoid valve is connected to the controller circuit. A medium connector is provided on the flexible sealing cover. The medium connector is fixed to the vertical surface of the flexible sealing cover by a second pre-embedded metal connector. One end of the medium connector is connected to the detection chamber, and the other end is connected to the two-position three-way solenoid valve. The two-position three-way solenoid valve is used to selectively connect the detection chamber to the vacuum pump or the detection chamber to the delivery pump.

7. The device for detecting the overlap quality of waterproof membrane for irregular surfaces according to claim 1, characterized in that: The pressure sensor is fixed to the inner wall of the flexible sealing cover via a first pre-embedded metal connector.

8. A method for inspecting the overlap quality of waterproof membranes for irregularly shaped surfaces, characterized in that: The method of using the waterproof membrane overlap quality testing device for irregular surfaces as described in claim 1 includes the following steps: S1: Fitting and fixing: Adjust the angle and length of each adjusting rod according to the contour of the irregular surface so that the flexible sealing cover covers the overlapping part of the waterproof membrane. Start the vacuum pump and use the vacuum suction cup to press and fix the bottom surface of the flexible sealing cover to the surface of the waterproof membrane to ensure the formation of a sealed testing chamber. S2: Sealing test: A small amount of test medium is injected into the test chamber through a delivery pump, so that the test medium forms a liquid layer with a height of 3-4 mm at the bottom of the test chamber, and then the delivery pump is turned off; depending on the test conditions, the test chamber is either evacuated or pressurized by introducing test medium. S3: Result Determination: If pressure testing is used: if the pressure in the testing chamber does not drop significantly during the pressure holding period and no air bubbles are released at the overlap seam, it is considered qualified; if the pressure drops significantly or air bubbles are continuously released, it is considered unqualified. If vacuum testing is used: if the vacuum level does not decrease significantly during the pressure holding period and no bubbles are generated at the overlap seam, it is considered qualified; if the vacuum level decreases significantly or bubbles are generated, it is considered unqualified.

9. The method for detecting the overlap quality of waterproof membrane for irregular surfaces according to claim 8, characterized in that: In step S2, the pressure range of the pressurization process is 0.1 to 0.3 MPa, and the pressure holding time is 5 to 10 min; the vacuum degree of the vacuuming process is -0.08 to -0.05 MPa, and the pressure holding time is 5 to 10 min.

10. The method for detecting the overlap quality of waterproof membrane for irregular surfaces according to claim 8, characterized in that: The inspection process adopts a local fixed-point inspection method. Based on the size and contour differences of the irregular surface, several key inspection points are selected for inspection. Specifically, 3 to 4 inspection points are evenly selected along the bottom circumference at the pipe root, 2 to 3 inspection points are selected at the inside and outside corners, and 3 to 5 inspection points are selected in sections along the lap joint of the curved roof. By summarizing the inspection data of all inspection points, the lap quality of the entire inspection area is qualitatively judged.

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