High-pressure pipeline fault detection equipment

Abstract

The utility model discloses high-pressure pipeline fault detection equipment, which comprises a first sliding block and a second sliding block, closed air bags are respectively embedded and fixed on the outer walls of the first sliding block and the second sliding block, a second air pipe communicated with the closed air bags is arranged on the first sliding block, and an air pressure sensor is arranged on one side of the first sliding block. According to the high-pressure pipeline fault detection equipment, air is injected into the second air pipe, the closed air bag is supported, the corrugated pipe is supported, the telescopic pipe extends to the set length, the outer wall of the closed air bag is tightly attached to the inner wall of the pipeline, a closed space is formed, the closed air bag is closed, the corrugated pipe is supported, the telescopic pipe extends to the set length, and the high-pressure pipeline fault detection equipment is convenient to use. At the moment, air with a certain pressure is injected into the first air pipe, the pressure is detected through an air pressure sensor, when leakage occurs in the pipeline, the air pressure between the first sliding block and the second sliding block is reduced, and the pipeline fracture position can be determined through multi-layer repeated operation.

Description

Technical Field

[0001] The utility model relates to pipeline detection equipment, in particular to high-pressure pipeline fault detection equipment. Background Art

[0002] High-pressure pipelines are used to transport gases and liquids. In order to ensure good pressure resistance, they are usually made of metal. If there is a cold weld in the welding part, it will be prone to corrosion and cracks in the later stage. At the same time, when the pressure is too high, it will also cause cracks in the pipe wall, thus causing pipeline failure.

[0003] When a pipeline fails, the pressure becomes low and it needs to be tested. Some pipelines are buried underground or in mezzanines, making it difficult to see the exact leaking location of the pipeline and making detection more difficult. Utility Model Content

[0004] The utility model aims to provide a high-pressure pipeline fault detection device to solve the problem that the pipeline is buried underground and it is inconvenient to see the exact water leakage position of the pipeline.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure pipeline fault detection device, comprising a first sliding block and a second sliding block, the first sliding block and the second sliding block are connected with a detection mechanism, the detection mechanism comprises a closed air bag, the outer walls of the first sliding block and the second sliding block are respectively embedded with closed air bags, a second air pipe is installed on the first sliding block, a pair of the closed air bags are connected to the second air pipe, a pressure sensor is installed on the side of the first sliding block close to the second sliding block, and a first air pipe connected to the other side of the first sliding block is installed on the first sliding block;

[0006] A telescopic mechanism is installed between the first sliding block and the second sliding block, and the telescopic mechanism includes a bellows. A bellows is installed between the first sliding block and the second sliding block. A pair of closed airbags are connected to the second air pipe through the telescopic tube. A multi-level telescopic tube is installed between the first sliding block and the second sliding block.

[0007] As a preferred technical solution of the utility model, a limit assembly is installed on the telescopic tube, and the limit assembly includes a slide groove. Each upper telescopic tube is provided with a slide groove, and each lower telescopic tube is installed with a limit column. The limit column is slidably connected to the upper telescopic tube through the slide groove, and the telescopic tubes at each level rotate with each other. The slide groove is an "L"-shaped structure, which is convenient for controlling the telescopic tube of a required length.

[0008] As a preferred technical solution of the utility model, the telescopic tubes at each stage are interlocked with each other, and the diameter of the telescopic tubes at each stage is gradually reduced, thereby facilitating the telescopic tubes to be extended and retracted.

[0009] As a preferred technical solution of the utility model, a spring is installed between the first sliding block and the second sliding block, and the spring is located inside the bellows, so that the spring can pull the bellows to reset, and the first sliding block and the second sliding block can be reset.

[0010] As a preferred technical solution of the utility model, the first air pipe and the second air pipe are externally sleeved with a protective sleeve, and the protective sleeve is fixedly connected to the first sliding block, thereby protecting the first air pipe and the second air pipe.

[0011] As a preferred technical solution of the utility model, the first sliding block and the second sliding block are both cylindrical structures, and the diameters of the first sliding block and the second sliding block are the same, so as to facilitate the fitting of the closed airbag and the inner wall of the circular pipe.

[0012] As a preferred technical solution of the utility model, the closed airbag is in a circular ring structure and is made of rubber, so that the closed airbag can expand and adapt to pipes of different thicknesses.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model provides a closed airbag, a first sliding block and a second sliding block. The first sliding block and the second sliding block are in a state of being close to each other. The first sliding block and the second sliding block are inserted into the interior of the pipeline through the flange opening of the pipeline, and air is injected into the interior of the second air pipe, so that the closed airbag is propped up. At the same time, when the closed airbag reaches a certain pressure, the outer wall of the closed airbag will be tightly fitted with the inner wall of the pipeline, so that a closed space is formed between the first sliding block and the second sliding block. At this time, air with a certain pressure is injected into the interior of the first air pipe, and the air enters between the first sliding block and the second sliding block. The pressure is detected by the air pressure sensor. When a leak occurs in the pipeline, the air pressure between the first sliding block and the second sliding block will be reduced, so as to achieve the purpose of detecting the first sliding block and the second sliding block section of the pipeline, release the gas, pull the first sliding block and the second sliding block position, and then inflate and repeat the operation. After repeated multiple times, the leak position can be found. The specific position of the pipeline crack can be inferred through the extension length of the first air pipe and the second air pipe, so as to facilitate the determination of the rupture position of the buried and interlayer pipeline.

[0015] 2. The utility model provides a top plate, a slide bar and a rubber pad. Before the first slide block and the second slide block are inserted into the interior of the pipeline, the first slide block is rotated to drive one of the telescopic tubes to rotate, so that one of the limit posts slides to the "L"-shaped end of the slide groove to limit the sliding of the adjacent telescopic tube. The limit post is rotated according to the required spacing between the first slide block and the second slide block. When the gas enters the interior of the closed airbag, the gas props up the bellows, the spring is stretched, and the telescopic tube is stretched to a set length. At the same time, when the gas is not introduced, the first slide block and the second slide block are close to each other, which makes it easier to insert it through the vertical flange opening of the pipeline and to adapt to the curved pipeline, so there is no need to disassemble the installed pipeline, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the bellows part of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the first trachea part of the utility model.

[0019] In the figure: 1. first sliding block; 2. second sliding block; 3. detection mechanism; 31. closed airbag; 32. protective cover; 33. first air pipe; 34. second air pipe; 35. air pressure sensor; 4. telescopic mechanism; 41. telescopic tube; 42. limit assembly; 421. slide groove; 422. limit column; 43. spring; 44. bellows. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 , the utility model provides a technical solution for high-pressure pipeline fault detection equipment:

[0022] Embodiment 1:

[0023] according to Figure 1 , Figure 2 and Figure 3As shown, a high-pressure pipeline fault detection device includes a first sliding block 1 and a second sliding block 2, the first sliding block 1 and the second sliding block 2 are connected with a detection mechanism 3, the detection mechanism 3 includes a closed airbag 31, the closed airbags 31 are respectively embedded and fixed on the outer walls of the first sliding block 1 and the second sliding block 2, a second air pipe 34 is installed on the first sliding block 1, a pair of closed airbags 31 are connected to the second air pipe 34, an air pressure sensor 35 is installed on the side of the first sliding block 1 close to the second sliding block 2 (the air pressure sensor 35 can adopt an FK-P300-J type pressure sensor), a first air pipe 33 connected to the other side of the first sliding block 1 is installed on the first sliding block 1, so as to form a closed space with the inner wall of the pipeline, the first sliding block 1 and the second sliding block 2 are both cylindrical structures, the diameters of the first sliding block 1 and the second sliding block 2 are the same, so as to adapt to the circular pipeline, the closed airbag 31 is a circular ring structure, and the closed airbag 31 is made of rubber, so that the inflated closed airbag 31 can fill the inner wall of the pipeline, thereby blocking the air.

[0024] When in use, the first sliding block 1 and the second sliding block 2 are in a state of being close to each other, and are inserted into the interior of the pipeline through the flange opening of the pipeline, and the first sliding block 1 and the second sliding block 2 are pushed to move through the protective cover 32, the first air pipe 33 and the second air pipe 34, so that the first sliding block 1 and the second sliding block 2 extend into the pipeline, and air is injected into the interior of the second air pipe 34, and the gas enters the interior of the closed air bag 31, thereby propping up the closed air bag 31. At the same time, when the closed air bag 31 reaches a certain pressure, the outer wall of the closed air bag 31 will fit closely with the inner wall of the pipeline, thereby forming a closed space between the first sliding block 1 and the second sliding block 2. Air of a certain pressure is injected into the first air pipe 33, and the air enters between the first sliding block 1 and the second sliding block 2. The pressure is detected by the air pressure sensor 35. When a crack in the pipeline is detected, the air pressure between the first sliding block 1 and the second sliding block 2 will be reduced, thereby achieving the purpose of detecting the first sliding block 1 and the second sliding block 2 of the pipeline. The gas is released, the position of the first sliding block 1 and the second sliding block 2 is pulled, and the operation is repeated by inflating again. After repeated multiple times, the leakage position can be found. The specific position of the pipeline crack can be inferred through the extension length of the first air pipe 33 and the second air pipe 34, thereby facilitating the determination of the rupture position of the buried and interlayer pipelines.

[0025] Embodiment 2:

[0026] On the basis of the first embodiment, Figure 1 and Figure 2As shown, a telescopic mechanism 4 is installed between the first sliding block 1 and the second sliding block 2, and the telescopic mechanism 4 includes a bellows 44. A bellows 44 is installed between the first sliding block 1 and the second sliding block 2. A pair of closed airbags 31 are connected to the second air pipe 34 through the telescopic tube 41. A multi-level telescopic tube 41 is installed between the first sliding block 1 and the second sliding block 2, so that the distance between the first sliding block 1 and the second sliding block 2 is larger, which is convenient for detecting longer sites. A limit assembly 42 is installed on the telescopic tube 41, and the limit assembly 42 includes a slide groove 421. Each upper telescopic tube 41 is provided with a slide groove 421, and each lower telescopic tube 41 is installed with a limit column 422. The limit column 422 passes through the slide groove 4 The telescopic tube 41 of each level is slidably connected with the upper level, and the telescopic tubes 41 of each level rotate with each other. The slide groove 421 is in an "L" shape, so that it is convenient to adjust the spacing between the first sliding block 1 and the second sliding block 2 more as needed. The telescopic tubes 41 of each level are mutually buckled, and the diameter of the telescopic tubes 41 of each level is gradually reduced, so that the telescopic tube 41 can be extended and retracted. A spring 43 is installed between the first sliding block 1 and the second sliding block 2. The spring 43 is located inside the bellows 44, which is convenient for the telescopic tube 41 to reset after extension and retraction. The outer sleeves of the first air pipe 33 and the second air pipe 34 are connected with a protective sleeve 32, and the protective sleeve 32 is fixedly connected to the first sliding block 1, so as to protect the first air pipe 33 and the second air pipe 34 (the telescopic tube 41 is not limited to Figure 1 The three levels in the figure can be set to multiple levels, so as to increase the length of the closed space between the two closed air bags 31, thereby increasing the length of the detection pipeline section and improving the detection efficiency. When approaching the elbow, the smaller length can better adapt).

[0027] When in use, before inserting the first sliding block 1 and the second sliding block 2 into the interior of the pipe, the first sliding block 1 is rotated to drive one of the telescopic tubes 41 to rotate, so that one of the limiting posts 422 slides to the "L"-shaped end of the slide groove 421 to limit the sliding of the adjacent telescopic tube 41. The limiting post 422 is rotated according to the required spacing between the first sliding block 1 and the second sliding block 2. When the gas enters the interior of the closed airbag 31, the closed airbag 31 is propped up. When the closed airbag 31 reaches a certain pressure, the gas props up the bellows 44, and the spring 43 is stretched. The telescopic tube 41 is extended to a set length, so as to facilitate the detection of the closed space of the pipeline between the first sliding block 1 and the second sliding block 2. After the detection is completed, the ventilation is closed, the closed airbag 31 contracts, the spring 43 contracts, and the bellows 44 is pulled to contract, so that the first sliding block 1 and the second sliding block 2 are close to each other, which is convenient for removal. When no gas is introduced, the first sliding block 1 and the second sliding block 2 are close to each other, which is more convenient to insert through the vertical flange opening of the pipeline, and at the same time it is easy to adapt to the curved pipeline, so there is no need to disassemble the installed pipeline, which is more convenient.

[0028] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure pipeline fault detection device, comprising a first sliding block (1) and a second sliding block (2), wherein the first sliding block (1) and the second sliding block (2) are connected with a detection mechanism (3), characterized in that: The detection mechanism (3) comprises a closed airbag (31), the closed airbags (31) are respectively embedded and fixed on the outer walls of the first sliding block (1) and the second sliding block (2), a second air pipe (34) is installed on the first sliding block (1), a pair of the closed airbags (31) are connected to the second air pipe (34), a pressure sensor (35) is installed on the side of the first sliding block (1) close to the second sliding block (2), and a first air pipe (33) connected to the other side of the first sliding block (1) is installed on the first sliding block (1); A telescopic mechanism (4) is installed between the first sliding block (1) and the second sliding block (2), and the telescopic mechanism (4) includes a bellows (44). A bellows (44) is installed between the first sliding block (1) and the second sliding block (2). A pair of closed air bags (31) are connected to the second air pipe (34) via the telescopic pipe (41). A multi-stage telescopic pipe (41) is installed between the first sliding block (1) and the second sliding block (2).

2. A high-pressure pipeline fault detection device according to claim 1, characterized in that: A limit assembly (42) is installed on the telescopic tube (41), and the limit assembly (42) includes a slide groove (421). Each upper telescopic tube (41) is provided with a slide groove (421), and each lower telescopic tube (41) is installed with a limit column (422). The limit column (422) is slidably connected to the upper telescopic tube (41) through the slide groove (421), and the telescopic tubes (41) of each level rotate with each other, and the slide groove (421) is an "L"-shaped structure.

3. A high-pressure pipeline fault detection device according to claim 1, characterized in that: Each stage of the telescopic tubes (41) is interlocked with each other, and the diameter of the telescopic tubes (41) at each stage decreases step by step.

4. A high-pressure pipeline fault detection device according to claim 1, characterized in that: A spring (43) is installed between the first sliding block (1) and the second sliding block (2), and the spring (43) is located inside the bellows (44).

5. A high-pressure pipeline fault detection device according to claim 1, characterized in that: The first air pipe (33) and the second air pipe (34) are externally sleeved with a protective sleeve (32), and the protective sleeve (32) is fixedly connected to the first sliding block (1).

6. A high-pressure pipeline fault detection device according to claim 1, characterized in that: The first sliding block (1) and the second sliding block (2) are both cylindrical structures, and the first sliding block (1) and the second sliding block (2) have the same diameter.

7. A high-pressure pipeline fault detection device according to claim 1, characterized in that: The closed airbag (31) is in a circular ring structure and is made of rubber.

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