CN109506846B - Bellows leak detection point device - Google Patents
Bellows leak detection point device Download PDFInfo
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- CN109506846B CN109506846B CN201811645833.8A CN201811645833A CN109506846B CN 109506846 B CN109506846 B CN 109506846B CN 201811645833 A CN201811645833 A CN 201811645833A CN 109506846 B CN109506846 B CN 109506846B
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- corrugated pipe
- water tank
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
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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
- G01M3/28—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 for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—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 for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to the technical field of corrugated pipe tightness tests, and particularly discloses a corrugated pipe leak detection point device which comprises a water tank, wherein two L-shaped guide pipes symmetrically arranged along the vertical central line of the water tank are fixedly connected in the water tank and vertically arranged; a detection block is arranged in the corrugated pipe, a cavity is formed in the detection block, and water-soluble dye particles are arranged in the cavity; the detection block is provided with a channel and a plurality of through grooves, and the channel and the through grooves are communicated with the cavity and the outside. According to the invention, when the leak point is formed on the bellows to be detected, the water in the water tank enters the bellows to dissolve the water-soluble dye particles in the detection block, so that the water is discolored, and the water-soluble dye particles can be immediately found by workers, and the operation is simple and reliable. In addition, the device and the method can be suitable for detecting the sealing property of the uncut corrugated pipe, reduce the installation work before the corrugated pipe is detected, and improve the detection efficiency.
Description
Technical Field
The invention relates to the technical field of corrugated pipe tightness tests, and particularly discloses a corrugated pipe leak detection point device.
Background
The corrugated pipe is a telescopic tubular elastic element and mainly comprises a metal corrugated pipe and a plastic corrugated pipe. The metal corrugated pipe has the effects of compensating thermal deformation of the pipeline, damping, absorbing settlement deformation of the pipeline and the like, and is widely applied to the fields of petrifaction, instruments, aerospace, chemical engineering, electric power and the like, while the plastic corrugated pipe has irreplaceable effects in the fields of medium conveying, electric power threading, machine tools, household appliances and the like. Whether the corrugated pipe is a metal corrugated pipe or a plastic corrugated pipe, one detection which must be carried out when the corrugated pipe leaves a factory is tightness detection so as to detect whether a leak point exists on the corrugated pipe or not, and avoid medium leakage in the pipe caused by the leak point of the corrugated pipe, thereby further causing accidents or economic loss.
The traditional corrugated pipe tightness detection means generally seals two ends of a corrugated pipe to be detected, places the corrugated pipe in a water tank filled with water after pressurization, and judges whether the corrugated pipe leaks according to the existence of bubbles. However, this detection approach has several disadvantages: 1. whether bubbles exist or not needs manual judgment, and judgment errors are easy; 2. when in detection, two ends of the corrugated pipe need to be sealed manually, the number of the corrugated pipes to be detected is large, the manual labor amount is large, and the detection efficiency is low; 3. the two ends of each corrugated pipe need to be sealed, and then the corrugated pipes need to be pressurized, so that the operation is complex. Therefore, the conventional bellows sealability detection apparatus needs to be further improved.
Disclosure of Invention
The invention aims to provide a corrugated pipe leak detection point device to solve the problems that a traditional corrugated pipe tightness detection device is complex in operation and large in workload of workers.
In order to achieve the purpose, the basic scheme of the invention is as follows: the corrugated pipe leak detection device comprises a water tank, wherein two L-shaped guide pipes symmetrically arranged along the vertical central line of the water tank are fixedly connected in the water tank, and the L-shaped guide pipes are vertically arranged; the detection block is positioned in the corrugated pipe, the size of the detection block is smaller than the inner diameter of the corrugated pipe, a cavity is formed in the detection block, and water-soluble dye particles are placed in the cavity; the detection block is provided with a channel and a plurality of through grooves, the channel and the through grooves are communicated with the cavity and the outside, the diameter of the channel is larger than that of the water-soluble dye particles, and the diameter of the through grooves is smaller than that of the water-soluble dye particles.
The working principle and the beneficial effects of the basic scheme are as follows:
1. because the water level in the water tank is higher than the pipe orifice of one end of the L-shaped guide pipe close to the bottom wall of the water tank, and the corrugated pipe sequentially passes through the two L-shaped guide pipes before water is poured into the water tank, the water body at the moment passes through the corrugated pipe at the bottom end of the L-shaped guide pipe, and the inside of the corrugated pipe is dry. Therefore, if the corrugated pipe is provided with the leakage point, when the part of the corrugated pipe with the leakage point passes through the bottom end of the L-shaped guide pipe, the water body enters the corrugated pipe through the leakage point and then enters the cavity of the detection block through the through groove, water-soluble dye particles in the cavity are dissolved, and the water body is caused to change color, so that a worker can immediately find the water body and take corresponding measures. Compared with the method for judging whether bubbles exist, the method for judging whether the water body discolors is more accurate and visual, and the operation of the basic scheme is simpler and more reliable. In addition, in the basic scheme, two ends of the corrugated pipe do not need to be sealed, the labor amount of workers is reduced, and the detection efficiency is improved.
2. In this basic scheme, utilize the elasticity of bellows to the bellows can move along L type stand pipe, makes the part of bellows immerse in the water in the basin. And just because the bellows has elasticity and can take place the deformation, consequently, detect the inside that the piece can be in the bellows that immerses in the water all the time under the action of gravity to water body gets into can in time dissolve the water-soluble dyestuff granule in the detection piece after the bellows, thereby is convenient for the staff in time to judge whether this section bellows has the leak source.
3. Can put into the cavity with water-soluble dyestuff granule through the passageway on detecting the piece, later use the rubber buffer shutoff passageway can avoid water-soluble dyestuff granule to roll out from the passageway, perhaps use the sticky tape with the passageway sealed can to after water-soluble dyestuff granule dissolves, can put into new water-soluble dyestuff granule through the passageway, realize detecting the used repeatedly of piece.
4. Most devices for detecting the sealing property of the corrugated pipe are suitable for the cut corrugated pipe, namely a finished corrugated pipe product, so that the corrugated pipe to be detected needs to be installed and disassembled every time of detection. Compared with the prior art, the device in the basic scheme can be suitable for detecting the sealing performance of the uncut corrugated pipe, so that the installation and disassembly work of the corrugated pipe is reduced, and the workload of workers is reduced.
Furthermore, a supporting rod is fixedly connected to the side wall of the water tank, an installation plate is fixedly connected to the top end of the supporting rod, a fixed block is fixedly connected to one side, facing the water tank, of the installation plate, a groove is formed in the bottom of the fixed block, a conductive metal plate is vertically and slidably connected into the groove, a spring is fixedly connected to the top wall of the groove, one end, away from the top wall of the groove, of the spring is fixedly connected with the conductive metal plate, a flexible wire is fixedly connected to the conductive metal plate, a floater is fixedly connected to the bottom end of the flexible wire; the side wall of the groove is fixedly connected with two polar plates which are oppositely arranged, the two polar plates are positioned below the conductive metal plate, one polar plate is connected with a power supply through a circuit, the other polar plate is connected with an alarm through a circuit, the alarm is connected with a switch in a normally closed state through a circuit, and the switch is connected with the power supply through a circuit.
Furthermore, if the part of the corrugated pipe immersed in the water body has a leak point, the water body enters the interior of the corrugated pipe through the leak point, on one hand, the water body can dissolve water-soluble dye particles in the cavity of the detection block, so that the water body changes color, and a worker can conveniently judge whether the corrugated pipe has the leak point; on the other hand, after the water in the basin got into in the bellows through the leak source, the surface of water in the basin reduced, and the float descends along with the surface of water, and in-process, the float dragged flexible wire rod for the electrically conductive metal sheet in the recess slides to the basin direction, and then, electrically conductive metal sheet and two polar plate contacts and electrically conduct, and the circuit intercommunication sends out the police dispatch newspaper after the alarm circular telegram, and the suggestion staff looks over the leak source position of bellows. Therefore, this scheme can carry out dual detection to the bellows whether have the leak source, and the water discolours promptly and the alarm sends out the police dispatch newspaper, improves the accuracy that detects. In addition, after the alarm gives an alarm, the worker can control the switch to be turned on to perform power-off processing on the alarm, so that the alarm is prevented from giving an alarm all the time.
Further, the detection block is spherical.
The spherical detection block has no edges and corners, is convenient to roll, and can not scratch the inner wall of the corrugated pipe.
Further, the flexible wire is in a vertical state.
The flexible wire is in vertical state to the float is followed the surface of water and is descended the back, and the flexible wire can drag electrically conductive metal sheet to slide to the basin direction immediately, improves the promptness that the alarm sent out the police dispatch newspaper.
Further, a buffer layer is fixedly connected in the L-shaped guide pipe.
The buffer layer can protect the outer wall of bellows, avoids the friction between the outer wall of bellows and the inside of L type conduit to make the bellows impaired.
Furthermore, two water level indicating lines are arranged on the inner wall of the water tank, and the vertical distance between the two water level indicating lines is equal to the vertical distance between the conductive metal plate and the top of the polar plate.
Because the water in the basin will be stained with and attach on the outer wall of bellows, consequently, along with the removal of bellows, the water in the basin reduces gradually, and the surface of water descends gradually (nevertheless compares with the surface of water short time decline volume when the water got into the bellows through the leak source, and this decline volume is very little), consequently, sets up two water level prompt lines, makes things convenient for the staff to add the water to the surface of water keeps between two water level prompt lines.
Furthermore, one end of one L-shaped guide pipe, which is far away from the bottom wall of the water tank, is rotatably connected with two rotating rollers which are arranged in parallel, the outer peripheral wall of each rotating roller is fixedly connected with a water absorption sponge layer, and the water absorption sponge layer can be in extrusion contact with the outer wall of the corrugated pipe and the inner wall of the L-shaped guide pipe; the other side of the rotating roller is fixedly provided with a motor, the output end of the motor is fixedly connected with the end part of the rotating roller, the rotating roller is coaxially and fixedly connected with a driving gear, and the other rotating roller is coaxially and fixedly connected with a driven gear meshed with the driving gear.
The motor drive rotates with motor output fixed connection's commentaries on classics roller, because driving gear and driven gear's meshing, consequently another commentaries on classics roller takes place to rotate, again because the sponge layer that absorbs water can with the outer wall extrusion contact of bellows, consequently, when the sponge layer that absorbs water and bellows outer wall extrusion contact, the frictional force that produces when can not only utilizing extrusion contact conveys the bellows, can also utilize the sponge that absorbs water to absorb the water that is stained with on the bellows outer wall, and under the squeezing action of L type stand pipe inner wall, the water leaves the sponge layer that absorbs water and drips back in the L type stand pipe, reduce the water volume that the bellows was taken away, thereby reduce the decline volume of the surface of water in the basin.
Further, the color of the water-soluble dye particles is selected from red or green or blue.
When the red, green or blue water-soluble dye particles are dissolved, the color of the water body is brighter, and the water-soluble dye particles are convenient for workers to find.
Drawings
FIG. 1 is a front cross-sectional view of a bellows leak detection point device in an embodiment of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a top view of the L-shaped guide tube at the right side of FIG. 1;
fig. 4 is an enlarged schematic view of B in fig. 1.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the water tank comprises a water tank 1, an L-shaped guide pipe 2, a buffer layer 3, a rotating roller 4, a water absorption sponge layer 5, a motor 6, a driving gear 7, a driven gear 8, a water level prompt line 9, a support rod 10, an installation plate 11, a fixed block 12, a groove 13, a conductive metal plate 14, a spring 15, a flexible wire 16, a floater 17, a polar plate 18, a power supply 19, an alarm 20, a switch 21, a detection block 22, a cavity 221, water-soluble dye particles 23, a channel 24, a through groove 25, a rubber plug 26 and a corrugated pipe 27.
The embodiment is basically as shown in figure 1: bellows leak hunting point device, including basin 1, fixedly connected with along two L type stand pipes 2 of the vertical central line symmetry setting of basin 1 in the basin 1, the vertical setting of L type stand pipe 2, the inner wall fixedly connected with buffer layer 3 of L type stand pipe 2, in this embodiment, buffer layer 3 is the rubber layer.
As shown in fig. 2 and 3, the top end of the L-shaped guide tube 2 on the right side in the water tank 1 is rotatably connected with two parallel rotary rollers 4, a water-absorbing sponge layer 5 is fixedly connected to the peripheral wall of the rotary roller 4, and the water-absorbing sponge layer 5 can be in contact with the outer wall of the corrugated tube 27 and the inner wall of the L-shaped guide tube 2 in a squeezing manner. The other fixed mounting of commentaries on classics roller 4 has motor 6, and motor 6's output and the tip fixed connection that is located left side commentaries on classics roller 4 should change roller 4 coaxial fixedly connected with driving gear 7, another commentaries on classics roller 4 coaxial fixedly connected with the driven gear 8 of driving gear 7 meshing.
Be equipped with two water level lines 9 on the inner wall of basin 1, the lateral wall fixedly connected with bracing piece 10 of basin 1, the top fixedly connected with mounting panel 11 of bracing piece 10, the downside fixedly connected with fixed block 12 of mounting panel 11. The bottom of fixed block 12 is seted up flutedly 13, and vertical sliding connection has electrically conductive metal sheet 14 in the recess 13, the roof fixedly connected with spring 15 of recess 13, the lower extreme and the electrically conductive metal sheet 14 fixed connection of spring 15. The conductive metal plate 14 is fixedly connected with a flexible wire 16, the bottom end of the flexible wire 16 is fixedly connected with a floater 17, the floater 17 floats on the water surface in the water tank 1, and the flexible wire 16 is in a vertical state.
The side wall of the groove 13 is fixedly connected with two polar plates 18 which are oppositely arranged, the two polar plates 18 are positioned below the conductive metal plate 14, one polar plate 18 is connected with a power supply 19 through a circuit, the other polar plate 18 is connected with an alarm 20 through a circuit, the alarm 20 is connected with a switch 21 which is in a normally closed state through a circuit, and the switch 21 is connected with the power supply 19 through a circuit. The vertical distance between the two water level indicating lines 9 is equal to the vertical distance between the conductive metal plate 14 and the top of the polar plate 18, and the water surface position in the water tank 1 is located between the two water level indicating lines 9.
The detector also comprises a spherical detection block 22, wherein the detection block 22 is positioned in the corrugated pipe 27, and the size of the detection block 22 is smaller than the inner diameter of the corrugated pipe 27. Referring to fig. 4, a cavity 221 is formed in the detection block 22, and red water-soluble dye particles 23 are placed in the cavity 221. The detection block 22 is provided with a channel 24 and a plurality of through grooves 25, the channel 24 and the through grooves 25 are communicated with the cavity 221 and the outside, the diameter of the channel 24 is larger than the particle diameter of the water-soluble dye particles 23, the diameter of the through grooves 25 is smaller than the particle diameter of the water-soluble dye particles 23, the channel 24 is blocked by a rubber plug 26, and the water-soluble dye particles 23 in the cavity 221 are prevented from rolling out through the channel 24.
The specific implementation process is as follows: in this embodiment, the corrugated pipe 27 sequentially passes through the two L-shaped guide pipes 2 from left to right, and then the water is poured into the water tank 1, so that the water level in the water tank 1 is between the two water level indication lines 9, and then the detection block 22 is placed into the corrugated pipe 27. The motor 6 is started, the motor 6 drives the left rotary roller 4 to rotate anticlockwise, and the driving gear 7 is meshed with the driven gear 8, so that the driven gear 8 and the right rotary roller 4 start to rotate clockwise, the water absorption sponge layer 5 on the rotary roller 4 is in mutual extrusion contact with the outer wall of the corrugated pipe 27, and the corrugated pipe 27 moves upwards due to the generated friction force, so that the corrugated pipe 27 is moved, and the sealing performance of different sections of the corrugated pipe 27 is detected. Simultaneously, the sponge layer 5 that absorbs water will absorb the water that is stained with on the bellows 27 outer wall to rotate the in-process and extrude each other with the inner wall of L type stand pipe 2, under the effect of extrusion force, the water in the sponge layer 5 that absorbs water breaks away from the sponge layer 5 that absorbs water and drips back to the L type stand pipe 2 on right side in, reduces the water volume that bellows 27 took away from, thereby reduces the decline volume of the surface of water in the basin 1.
As the bellows 27 moves, different sections of the bellows 27 will be immersed in the body of water, and a leak test is performed as to whether the bellows 27 has a leak. In the process, the detection block 22 is always positioned inside the corrugated pipe 27 immersed in the water body under the gravity action center. When the corrugated pipe 27 immersed in the water body has a leak point, the water body in the water tank 1 enters the corrugated pipe 27 through the leak point, the water body enters the cavity 221 through the through groove 25 of the detection block 22, red water-soluble dye particles 23 are dissolved, the water body is immediately red, the corrugated pipe 27 with the leak point can be conveniently judged by a worker, the motor 6 is timely turned off, and the corrugated pipe 27 with the leak point is cut off.
Meanwhile, because the water in the water tank 1 enters the corrugated pipe 27, the water level in the water tank 1 is caused to fall below the lower water level prompt line 9 in a short time, and the floater 17 floating on the water surface descends along with the water surface, so that the flexible wire 16 is pulled, the conductive metal plate 14 in the groove 13 slides downwards and is in contact with the two polar plates 18 to be electrified, the circuit is communicated, the alarm 20 gives an alarm after being electrified, and a worker is prompted to check the leak source of the section of corrugated pipe.
Therefore, in this embodiment, whether staff can judge whether have the leak source on the bellows 27 that immerses in the water through whether the water discolours, also can judge whether have the leak source on the bellows 27 that immerses in the water through whether the alarm 20 sends the police dispatch newspaper, and both also can verify each other.
It should be noted that in this embodiment, the water level in the water tank 1 should be maintained between the two water level indication lines 9, so that the staff is required to observe the water level position at regular time to add the water body in time, so that the water level position is maintained between the two water level indication lines 9.
Of course, in this embodiment, the staff may also use the alarm issued by the alarm 20 as a prompt for adding water. In this way, after receiving the alarm every time, when the staff adds the water body, the staff needs to pay attention to whether the color of the water body in the water tank 1 changes, and if the color of the water body changes, the alarm indicates that the staff needs to turn off the motor 6 and cut off the section of corrugated pipe because the leakage point on the corrugated pipe 27 immersed in the water body is detected; if the water body is not discolored, the alarm is that the water body needs to be added to increase the water level because the water level is lowered below the lower water level prompt line 9.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.
Claims (6)
1. Bellows leak hunting point device, including the basin, its characterized in that: the water tank is internally and fixedly connected with two L-shaped guide pipes which are symmetrically arranged along the vertical central line of the water tank, the L-shaped guide pipes are vertically arranged, one end of one L-shaped guide pipe, which is far away from the bottom wall of the water tank, is rotatably connected with two rotating rollers which are arranged in parallel, the peripheral walls of the rotating rollers are fixedly connected with water absorption sponge layers, and the water absorption sponge layers can be in extrusion contact with the outer wall of the corrugated pipe and the inner walls of the L-shaped guide pipes; a motor is fixedly arranged beside the rotating roller, the output end of the motor is fixedly connected with the end part of the rotating roller, the rotating roller is coaxially and fixedly connected with a driving gear, and the other rotating roller is coaxially and fixedly connected with a driven gear meshed with the driving gear; the detection block is positioned in the corrugated pipe, the size of the detection block is smaller than the inner diameter of the corrugated pipe, a cavity is formed in the detection block, and water-soluble dye particles are placed in the cavity; the detection block is provided with a channel and a plurality of through grooves, the channel and the through grooves are communicated with the cavity and the outside, the diameter of the channel is larger than the particle size of the water-soluble dye particles, and the diameter of the through groove is smaller than the particle size of the water-soluble dye particles; the side wall of the water tank is fixedly connected with a supporting rod, the top end of the supporting rod is fixedly connected with an installation plate, one side of the installation plate, which faces the water tank, is fixedly connected with a fixed block, the bottom of the fixed block is provided with a groove, a conductive metal plate is vertically and slidably connected in the groove, the top wall of the groove is fixedly connected with a spring, one end, away from the top wall of the groove, of the spring is fixedly connected with the conductive metal plate, the conductive metal plate is fixedly connected with a flexible wire, the bottom end of the flexible wire is fixedly connected with a; the side wall of the groove is fixedly connected with two polar plates which are oppositely arranged, the two polar plates are positioned below the conductive metal plate, one polar plate is connected with a power supply through a circuit, the other polar plate is connected with an alarm through a circuit, the alarm is connected with a switch in a normally closed state through a circuit, and the switch is connected with the power supply through a circuit.
2. The bellows leak detection point device of claim 1, wherein: the detection block is spherical.
3. The bellows leak detection device according to claim 1 or 2, characterized in that: the flexible wire is in a vertical state.
4. The bellows leak detection device of claim 3, wherein: and a buffer layer is fixedly connected in the L-shaped guide pipe.
5. The bellows leak detection device according to claim 1 or 4, wherein: and two water level prompt lines are arranged on the inner wall of the water tank, and the vertical distance between the two water level prompt lines is equal to the vertical distance between the conductive metal plate and the top of the polar plate.
6. The bellows leak detection point device of claim 5, wherein: the color of the water-soluble dye particles is selected from red, green or blue.
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| CN201811645833.8A CN109506846B (en) | 2018-12-29 | 2018-12-29 | Bellows leak detection point device |
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| CN201811645833.8A CN109506846B (en) | 2018-12-29 | 2018-12-29 | Bellows leak detection point device |
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| CN109506846A CN109506846A (en) | 2019-03-22 |
| CN109506846B true CN109506846B (en) | 2020-12-15 |
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| CN112556780A (en) * | 2019-09-26 | 2021-03-26 | 襄阳中车电机技术有限公司 | Monitoring device for motor immersion depth |
| CN112098007B (en) * | 2020-10-23 | 2021-04-09 | 山东乔泰管业科技有限公司 | Production performance detection system for high-density polyethylene HDPE double-wall corrugated pipe |
| CN114659722B (en) * | 2022-03-22 | 2024-02-27 | 浙江圣峰汽车部件有限公司 | Detection equipment for tightness of automobile filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19821084C2 (en) * | 1998-05-12 | 2000-08-31 | Thermosoft Klimatechnik Gmbh | Leak monitoring procedures |
| CN201435011Y (en) * | 2009-03-20 | 2010-03-31 | 舒满鹏 | Reservoir water level controller |
| CN202305139U (en) * | 2011-10-27 | 2012-07-04 | 江苏晨东机械制造有限公司 | Composite pressure testing tool for corrugated pipe assembly |
| CN104198132B (en) * | 2014-09-23 | 2017-02-15 | 安吉恒盛热能机械有限公司 | End face seal type air pressure compactness detection device for small-diameter detected pipe fittings |
| CN205580688U (en) * | 2016-04-01 | 2016-09-14 | 天津亿利科能源科技发展股份有限公司 | Evaluation device of high pressure pipeline leak detection system |
| CN205607606U (en) * | 2016-05-03 | 2016-09-28 | 黄伯利 | Solenoid valve water leakage detection device |
| CN108151978A (en) * | 2017-11-24 | 2018-06-12 | 重庆赛格尔汽车配件有限公司 | A kind of air-conditioning duct air-tightness rapid detection method |
| CN108468949A (en) * | 2018-05-08 | 2018-08-31 | 广州飞机维修工程有限公司 | A kind of chance water discoloration instruction pipe sleeve for Water pipe leaking detection |
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