CN113720547B - Waterproof layer leakage detection method - Google Patents
Waterproof layer leakage detection method Download PDFInfo
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- CN113720547B CN113720547B CN202110956225.4A CN202110956225A CN113720547B CN 113720547 B CN113720547 B CN 113720547B CN 202110956225 A CN202110956225 A CN 202110956225A CN 113720547 B CN113720547 B CN 113720547B
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- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 19
- 238000003466 welding Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims 1
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a waterproof layer leakage detection method, which belongs to the technical field of waterproof detection, and is realized by a waterproof layer leakage detection device, wherein the waterproof layer leakage detection device comprises a cylinder body, a sucker, an air suction device, a piston, a pressure gauge and a grab handle, the sucker is connected to the lower end of the cylinder body, the air suction device is connected to the upper end of the cylinder body, the air suction device and the sucker are communicated, the piston is in sliding connection with the cylinder body, the pressure gauge is arranged on the side surface of the cylinder body, and the grab handle is fixed on the side surface of the piston. The method is used for leakage detection of the lap joint of the waterproof coiled material, can be used on the plane, inclined plane and vertical plane of the indoor, roofing and basement, and has the advantages of easy carrying, simple and convenient operation and high detection efficiency.
Description
Technical Field
The invention relates to the technical field of waterproof detection, in particular to a waterproof layer leakage detection method.
Background
The waterproof engineering generally adopts a macromolecule waterproof coiled material to lay to prevent water leakage, the waterproof coiled material is mainly used for building walls, roofs, tunnels, highways, refuse landfills and the like, plays a role in resisting external rainwater and groundwater leakage, is a flexible building material product which can be curled into a coiled shape, is used as a non-leakage connection between an engineering foundation and a building, is a first waterproof barrier of the whole engineering, plays a vital role in the whole engineering, and after construction is completed, the waterproof layer needs to be subjected to leakage detection, the waterproof engineering effect is generally detected by adopting the following method, the leakage can only be detected by adopting the naked eye detection method, the hidden gap can not be detected, a water-blocking test is adopted, the workload is large, and a certain topography condition is required to be implemented.
The patent with the prior bulletin number of CN2401886Y discloses a detection device for the lap joint part of a waterproof coiled material. The device consists of a walking frame, a vacuum pump and a vacuum detection chamber, wherein the vacuum pump is arranged at the upper end of the detection chamber. The height of the detection chamber does not exceed the height of the frame, and the upper edges of the two corresponding side surfaces of the detection chamber are respectively fixed with a support beam with a cross section in a' shaped structure. The support beam is hinged with one end of the supporting rod and a movable lifting hook is arranged at the hinged position. The other end of the supporting rod is connected with the longitudinal beam of the frame into a whole in a hinging way, and the invention solves the problem that the lap joint part of the waterproof coiled material can be subjected to leakage detection at any time. This scheme detects coiled material overlap limit and leaks when leaking, only need use medium to assist to observe and can observe whether leak, promotes the dolly to walk, and detection rate is lower, and the dolly removes the round and only is limited to removing in the plane, can't detect the waterproofing membrane welding seam of laying to inclined plane, facade, and single operation difficulty has certain limitation.
Disclosure of Invention
The invention aims to provide a waterproof layer leakage detection method which can be used for medium-free leakage detection of lap joints of indoor, outdoor and roof waterproof coiled materials after construction, and has the advantages of simple operation and high detection efficiency.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The waterproof layer leakage detection method is realized by a waterproof layer leakage detection device, the waterproof layer leakage detection device comprises an air suction device, a sucker, a cylinder body, a pressure gauge, a piston and a grab handle, the sucker is connected to the lower end of the cylinder body, the air suction device is connected to the upper end of the cylinder body, the air suction device and the sucker are communicated, the piston is in sliding connection with the inner wall of the cylinder body, the pressure gauge is arranged on the side surface of the cylinder body, and the grab handle is fixed on the side surface of the piston and extends out of the side surface of the cylinder body;
the waterproof layer leakage detection method comprises the following steps:
s1, holding the grab handle to move the leakage detection device, aligning the sucker to a welded joint, and pressing the grab handle to the lowest point;
s2, applying pressure to the sucker through downward movement of the grab handle, starting the air suction device to discharge air in the sucker outwards, compressing the sucker downwards under the action of atmospheric pressure, continuously exhausting air by the air suction device until the pressure gauge reaches a specified value, and closing the air suction device;
S3, pushing the grab handle upwards along the direction of the cylinder body to drive the piston to move upwards, continuously exerting constant force for a certain time, observing whether the pointer of the pressure gauge is changed, if the pointer of the pressure gauge is not changed obviously, indicating that the welding joint of the coiled material is free from air leakage, and if the pointer of the pressure gauge rotates at a constant speed, indicating that a certain leakage point exists on the welding joint of the coiled material at the surface;
s4, after detection is completed, manually marking the leaked welding seam, and for the welding seam without leakage, opening the sucker, after pressure is restored to be balanced, holding the grab handle to move the leakage detection method to the welding seam at the next position, and repeating the operation.
The sucking disc sets up into the round platform shape, be provided with cavity one on the sucking disc, cavity one's bottom is provided with through-hole and a plurality of arch, the edge of the other end of sucking disc is provided with a plurality of sealing flanges, cavity one is used for negative pressure exhaust space, and a plurality of sealing flanges at edge position seal the sucking disc prevents sucking disc gas leakage.
The utility model discloses a sucking disc, including sucking disc, protruding, sucking disc, a plurality of protruding are set to the strip and around sucking disc center evenly distributed, have interval and intercommunication each other between the protruding, a plurality of protruding height is not more than the degree of depth of sucking disc, a plurality of protruding regard as the contact surface spacing with the coiled material when detecting, the compression volume of sucking disc is stable, interval between a plurality of protruding makes inside air current unobstructed, and it is easier to bleed.
The sucker is made of high-molecular elastic materials, and the high-molecular elastic materials ensure that the contact between the sucker and the coiled material surface is easy to be closed, and the sucker is not easy to corrode and has long service life.
The cylinder body is the cylinder, the outer wall of cylinder body is provided with logical groove, the side of cylinder body is provided with pressure valve mount pad and air release valve mount pad, the top of cylinder body is provided with the air guide hole, the bottom of cylinder body is provided with the screw hole, the cylinder when the cylinder body slides, more easily sealed difficult gas leakage.
The grab handle passes through the through groove stretches out the both sides of stack shell and can slide from top to bottom in the through groove, and the grab handle that stretches out forces more smoothly when letting the operator hold, has reduced the operation degree of difficulty and intensity, is fit for lasting operation.
The suction device comprises a negative pressure pump, a pipeline and a one-way valve, wherein the negative pressure pump and the one-way valve are arranged at the top end of the cylinder body, the pipeline is used for communicating the negative pressure pump, the one-way valve and the piston, the one-way valve is outwards and unidirectionally conducted, the suction device with the one-way valve is smooth in air suction, and the outside air is prevented from penetrating from the suction device.
The pipeline is used for communicating the negative pressure pump, the one-way valve and the piston, and the one-way valve is arranged between the negative pressure pump and the piston to prevent air from entering the first cavity.
The pipeline is made of flexible materials, can freely stretch out and draw back in the cylinder body when the piston slides, and does not influence the air pressure in the sealing cavity when the piston slides.
The cylinder body is characterized by further comprising a gas release valve and a plurality of sealing rings, wherein the gas release valve is arranged on the side face of the lower portion of the cylinder body, the sealing rings are arranged on the side wall of the piston, and the gas release valve facilitates gas release after the sucking disc is tightly attached to the coiled material.
The two ends of the piston are arranged in a funnel shape, a channel is arranged in the middle of the piston, a cavity II is arranged at the lower end of the piston, a plurality of annular circular grooves are arranged on the side surface of the lower end of the piston, the two ends of the piston are in clearance fit with the cylinder body, the sealing rings are arranged in the annular circular grooves, the sealing rings are in tight contact with the inner wall of the cylinder body, no air leakage is guaranteed in the sliding process, the upper end and the lower end of the piston are provided with funnel shapes, and the guide is stable when the piston slides up and down.
The method has the beneficial effects that:
(1) The leakage detection device used by the method is provided with the sucking disc, a plurality of protruding blocks are arranged on the sucking disc, the mutual communicated intervals are arranged among the protruding blocks, the flange is arranged at the edge part of the sucking disc, the degree of the adhesion with the plane of the coiled material is good, the inner cylinder body, the piston and the air suction device are well sealed, and the leakage detection device is suitable for waterproof detection of the coiled material in the plane, the inclined plane and the vertical plane.
(2) The leakage detection device used by the method is provided with the sucking disc made of elastic materials, the grab handle is used for assisting in exhausting in the exhausting process, the exhausting is rapid after the detection of the air release valve is finished, the time consumption of the detection process is less when the leakage is detected, and the working efficiency is high.
(3) When the method is used, only one person is needed to operate, medium is not needed to assist in observation in the detection process, and the method is convenient to use and simple to operate.
Drawings
FIG. 1 is an exploded view of a waterproof layer leakage detection device provided by the invention;
FIG. 2 is an isometric view of a waterproof layer seepage detection device provided by the invention;
FIG. 3 is a front view of the waterproof layer leakage detection device provided by the invention;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 3;
FIG. 5 is a top view of the waterproof layer leakage detection device provided by the invention;
FIG. 6 is an isometric view of a barrel provided by the present invention;
FIG. 7 is a front view of a barrel provided by the present invention;
FIG. 8 is a plan view of the upper surface of FIG. 7 along the line A-A;
FIG. 9 is an isometric view of a piston provided by the present invention;
FIG. 10 is a front view of a piston provided by the present invention;
FIG. 11 is a cross-sectional view taken along line B-B of FIG. 10;
FIG. 12 is an isometric view of a suction cup provided by the present invention;
FIG. 13 is a front view of a suction cup provided by the present invention;
fig. 14 is a cross-sectional view taken along line D-D of fig. 13.
Reference numerals:
1. An air suction device; 101. a negative pressure pump; 102. a pipe; 103. a one-way valve; 104. a quick joint of the air pipe; 2. a thread sleeve; 3. a suction cup; 31. a protrusion; 32. a through hole; 33. a flange; 34. a first cavity; 4. a barrel body; 41. a threaded hole; 42. A bleeder valve mounting seat; 43. a pressure gauge mounting seat; 44. a through groove; 45. an air guide hole; 5. a release valve; 6. a pressure gauge; 7. A piston; 71. an internal thread; 72. an annular circular groove; 73. a cavity II; 74. a channel; 8. a grab handle; 9. and (3) sealing rings.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 5, a waterproof layer leakage detection device includes: the novel air suction device comprises an air suction device 1, a sucking disc 3, a cylinder body 4, an air release valve 5, a pressure gauge 6, a piston 7, a grab handle 8 and a plurality of sealing rings 9, wherein the sucking disc 3 is connected to the lower end of the cylinder body 4, the air suction device 1 is connected to the upper end of the cylinder body 4, the air suction device 1 and the sucking disc 3 are communicated, the piston 7 is in sliding connection with the cylinder body 4, the pressure gauge 6 and the air release valve 5 are arranged on the side face of the cylinder body 4, the grab handle 8 is fixed on the side face of the piston 7, and the sealing rings 9 are nested on the outer side wall of the piston 7.
Further, referring to fig. 12-14, the suction cup 3 is configured in a circular truncated cone shape, one end of the suction cup 3 with a smaller cross section is a bottom end, the bottom end is sealed, a cavity first 34 is arranged in the middle of the suction cup 3, a through hole 32 is arranged in the center of the bottom end of the suction cup 3, a plurality of protrusions 31 are arranged in the cavity first 34 of the suction cup 3, a plurality of sealing flanges 33 are arranged at the edge part of the other end of the suction cup 3, the protrusions 31 are configured in a strip shape and evenly distributed around the center of the suction cup 3, the protrusions 31 are spaced and are mutually communicated, and the height of the protrusions 31 does not exceed the depth of the suction cup 3.
Preferably, the suction cup 3 and the sealing ring 9 are made of silicone rubber, silicone rubber or synthetic rubber.
Further, referring to fig. 6-8, the barrel 4 is a thin-walled cylindrical metal barrel, end covers are welded at two ends of the barrel 4, a through groove 44 is formed in the outer wall of the barrel 4, the through groove 44 penetrates through two side walls of the barrel 4, a pressure valve mounting seat 43 and an air release valve mounting seat 42 are arranged on the side face of the barrel 4, one end of the barrel 4 is tightly attached to the pressure valve mounting seat 43 and the air release valve mounting seat 42, the mounting surface of the pressure valve mounting seat 43 is inclined upwards, the mounting surface of the air release valve mounting seat 42 is parallel to the direction of the barrel 4, an air guide hole 45 is formed in the end cover at the top end of the barrel 4, a threaded hole 41 is formed in the center of the end cover at the bottom end of the barrel 4, and a groove for positioning the sucker 3 is formed in the end cover at the bottom end of the barrel 4.
Preferably, referring to fig. 1, the leakage detection device further comprises a threaded sleeve 2, wherein the threaded sleeve 2 is used for fixing the suction cup 3 at the lower part of the cylinder body 4, so that the connection is firm, the suction cup 3 is not easy to loosen, and the suction cup 3 is convenient to replace after being damaged.
Further, referring to fig. 4, the suction device 1 is composed of a negative pressure pump 101, a pipe 102, a one-way valve 103 and a quick connector 104, the negative pressure pump 101 is fixed on an end cover at the top end of the cylinder body 4 by a bolt, the one-way valve 103 is fixed on the air guide hole 45, the end of the quick connector 104 is connected with the internal thread 71 on the channel 74, one end of the pipe 102 is connected with the output end of the negative pressure pump 101, the other end is connected with the quick connector 104, and the negative pressure pump 101, the one-way valve 103 and the piston 7 are communicated by passing through the one-way valve 103.
Further, referring to fig. 9-11, two ends of the piston 7 are configured as a funnel shape, a channel 74 is provided in the middle of the piston 7, one end of the channel 74 is provided with an internal thread 71, the other end of the channel 74 is provided with a cavity two 73, a plurality of annular circular grooves 72 are provided on the side surface of the piston 7, which is close to the cavity two 73, the two annular circular grooves 72 lean against the end surface of the piston 7, the piston 7 is in clearance fit with the cylinder body 4, the two sealing rings 9 are arranged in the plurality of annular circular grooves 72, and the plurality of sealing rings 9 are in tight contact with the inner wall of the cylinder body 4, so that no air leakage is ensured in the sliding process.
The waterproof layer leakage detection method comprises the following steps:
S1, when laying of indoor or roofing waterproof coiled materials is completed, the waterproof coiled materials are rubber or asphalt waterproof coiled materials, joints among the laid coiled materials are welded by a welding machine, the thickness of the coiled materials at the welded parts needs to be flattened to 80% -120% of the thickness of the coiled materials, the joints are compact and have no obvious gaps visible to naked eyes, sundries and obvious granular dust at the welded parts are cleaned after the joints are cooled to room temperature, the grab handle 8 is held to move the seepage detection method, the sucker 3 is kept in a downward state, the sucker 3 is aligned to the welded joint, the air escape valve 5 is opened, the grab handle 8 is pressed to the lowest point, and a closed space is formed by the cavity II 73, the cavity I34, the channel 74 and the one-way valve 103 on the piston 7.
S2, applying pressure downwards through the grab handle 8, simultaneously starting the negative pressure pump 11, discharging air in the sucker 3 outwards, compressing the sucker 3 downwards under the action of atmospheric pressure, enabling the plurality of protrusions 31 to abut against coiled materials paved on the ground, continuously pumping air by the negative pressure pump 11 until the pointer of the pressure gauge 6 reaches a specified value, closing the negative pressure pump 11 to stop pumping air, and correspondingly increasing the reading of the specified reading reached by the pointer of the pressure gauge 6 relative to the reading of the coiled materials on the ground when the surface paved on the coiled materials is an inclined surface, a wall surface perpendicular to the ground or a top surface.
S3, pushing the grab handle 8 to be perpendicular to a plane for laying coiled materials, continuously keeping constant force for more than 15 seconds, observing whether the pointer of the pressure gauge 6 changes, if the pointer of the pressure gauge 6 does not obviously change, the welding seam of the coiled materials is free of air leakage, if the pointer of the pressure gauge 6 rotates at a constant speed, a certain leakage point exists on the welding seam of the coiled materials at the surface, if the pointer of the pressure gauge 6 rotates at a constant speed, the sucking disc 3 rebounds, the welding seam of the coiled materials is unstable, the welding seam is torn, the adhesion between the individual coiled materials and the ground is unstable and can be directly sucked up by the sucking disc 3, the coiled materials at the edge part of the sucking disc 3 need to be manually fixed, the coiled materials are prevented from falling off in a large area, and leakage detection judgment of the coiled materials is not affected.
S4, after detection is completed, manually marking the leaked welding seam, and for the welding seam without leakage, opening the air release valve 5, after pressure is restored to be balanced, holding the grab handle 8 to move the leakage detection method to the next welding seam, and repeating the operation.
Example 2
As shown in fig. 1-5, the pressure gauge 6 and the air release valve 5 are integrated and installed on the side surface of the cylinder body 4, the air suction device 1 is arranged at the upper end of the piston 7 and wrapped by the cylinder body 4, the air suction device 1 is composed of a negative pressure pump 101, a pipeline 102 and a one-way valve 103, the one-way valve 103 is in threaded connection with the internal thread 71, one end of the pipeline 102 is connected with the output end of the negative pressure pump 101, the pipeline 102 passes through the one-way valve 103 and the channel 74 on the piston 7, and the other end is directly communicated with the cavity two 73.
Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not constitute any limitation on the invention.
Claims (5)
1. A waterproof layer leakage detection method is characterized in that: the waterproof layer leakage detection method is achieved through a waterproof layer leakage detection device, the waterproof layer leakage detection device comprises an air suction device (1), a sucker (3), a cylinder body (4), a pressure gauge (6), a piston (7) and a grab handle (8), the sucker (3) is connected to the lower end of the cylinder body (4), the air suction device (1) is connected to the upper end of the cylinder body (4), the air suction device (1) and the sucker (3) are communicated, the piston (7) is in sliding connection with the inner wall of the cylinder body (4), the pressure gauge (6) is arranged on the side face of the cylinder body (4), and the grab handle (8) is fixed on the side face of the piston (7) and extends out of the side wall of the cylinder body (4);
the sucker (3) is arranged in a truncated cone shape, a first cavity (34) is formed in the sucker (3), a through hole (32) and a plurality of protrusions (31) are formed in the bottom end of the first cavity (34), and a plurality of sealing flanges (33) are formed in the edge part of the other end of the sucker (3);
The plurality of protrusions (31) are arranged in a strip shape and uniformly distributed around the center of the sucker (3), the plurality of protrusions (31) are spaced and communicated with each other, and the height of the plurality of protrusions (31) does not exceed the depth of the sucker (3);
The cylinder body (4) is a cylinder, a through groove (44) is formed in the outer wall of the cylinder body (4), a pressure valve mounting seat (43) and a release valve mounting seat (42) are arranged on the side face of the cylinder body (4), an air guide hole (45) is formed in the top end of the cylinder body (4), and a threaded hole (41) is formed in the bottom end of the cylinder body (4);
The grab handle (8) passes through the through groove (44) to extend out of two sides of the cylinder body (4) and can slide up and down in the through groove (44);
The two ends of the piston (7) are arranged in a funnel shape, a channel (74) is arranged in the middle of the piston (7), a cavity II (73) is arranged at the lower end of the piston (7), a plurality of annular circular grooves (72) are formed in the side face of the lower end of the piston (7), the two ends of the piston (7) are in clearance fit with the cylinder body (4), a plurality of sealing rings (9) are arranged in the annular circular grooves (72), and the sealing rings (9) are tightly contacted with the inner wall of the cylinder body (4) to ensure that no air leakage occurs in the sliding process;
the waterproof layer leakage detection method comprises the following steps:
S1, holding the grab handle (8) to move the leakage detection device, aligning the sucker (3) to a welded joint, and pressing the grab handle (8) to the lowest point;
s2, applying pressure to the sucker (3) through downward movement of the grab handle (8), simultaneously starting the air suction device (1), discharging air in the sucker (3) outwards, compressing the sucker (3) downwards under the action of atmospheric pressure, enabling the bulges (31) to abut against coiled materials paved on the ground, and continuously exhausting air by the air suction device (1) until the pressure gauge (6) reaches a specified value, and closing the air suction device (1);
S3, pushing the grab handle (8) upwards along the direction of the barrel body (4) to drive the piston (7) to move upwards, continuously exerting constant force for a certain time, observing whether the pointer of the pressure gauge (6) changes, if the pointer of the pressure gauge (6) does not change obviously, indicating that the welding joint of the coiled material is free from air leakage, and if the pointer of the pressure gauge (6) rotates at a constant speed, a certain leakage point exists on the welding joint of the coiled material at the surface;
s4, after detection is completed, manually marking the leaked welding seam, and for the welding seam without leakage, opening the sucker (3), after pressure is restored to be balanced, holding the grab handle (8) to move the leakage detection device to the next welding seam, and repeating the operation.
2. The waterproof layer leakage detection method according to claim 1, wherein:
the sucker (3) is made of high polymer elastic material.
3. The waterproof layer leakage detection method according to claim 1, wherein:
The suction device comprises a negative pressure pump (101), a pipeline (102) and a one-way valve (103), wherein the negative pressure pump (101) is arranged at the top end of the cylinder body (4), the pipeline (102) is used for communicating the negative pressure pump (101), the one-way valve (103) and the piston (7), and the one-way valve (103) is communicated in an outward one-way mode.
4. A waterproof layer leakage detection method according to claim 3, characterized in that:
The pipe (102) is made of flexible material and can freely stretch and retract on the cylinder body (4) when the piston (7) slides.
5. The waterproof layer leakage detection method according to claim 4, wherein:
the novel air release valve further comprises an air release valve (5) and a plurality of sealing rings (9), wherein the air release valve (5) is arranged on the side face of the lower portion of the cylinder body (4), and the plurality of sealing rings (9) are arranged on the side wall of the piston (7).
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| CN102519678A (en) * | 2011-12-22 | 2012-06-27 | 广新海事重工股份有限公司 | Weld seam airtight detection method and used vacuum welding seam airtight detector |
| CN105043688A (en) * | 2015-08-25 | 2015-11-11 | 重庆瑞力比燃气设备有限责任公司 | Gas pipeline weld joint quality detection apparatus |
| CN205580692U (en) * | 2016-03-04 | 2016-09-14 | 中国石油集团渤海钻探工程有限公司 | T type welding seam vacuum test ware |
| CN206430874U (en) * | 2016-12-16 | 2017-08-22 | 山西人居土木工程检测有限公司 | Split type negative-pressure detection device |
| CN207964205U (en) * | 2018-02-10 | 2018-10-12 | 柴玉莲 | Leakage testing device at syringe piston or sealing ring under negative pressure |
| CN208596014U (en) * | 2018-06-12 | 2019-03-12 | 深圳市盖洛奇自动化设备有限公司 | It is a kind of to push vacuum leakage detection apparatus manually |
| CN211205674U (en) * | 2019-12-10 | 2020-08-07 | 王传玲 | Split type negative pressure detection device |
| CN212567832U (en) * | 2020-07-28 | 2021-02-19 | 安徽联鹏瓶盖包装有限公司 | Portable bottle cap sealing performance detection device |
| CN111829735A (en) * | 2020-07-31 | 2020-10-27 | 广东省水利水电科学研究院 | Device and method for detecting air tightness of pipeline |
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