CN111397814A - Pipeline leakage detection device - Google Patents
Pipeline leakage detection device Download PDFInfo
- Publication number
- CN111397814A CN111397814A CN202010155193.3A CN202010155193A CN111397814A CN 111397814 A CN111397814 A CN 111397814A CN 202010155193 A CN202010155193 A CN 202010155193A CN 111397814 A CN111397814 A CN 111397814A
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- Prior art keywords
- plug
- cap
- air
- pull rod
- pipeline
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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
- G01M3/2815—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 using pressure measurements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The pipeline leakage detection device comprises a first plug, a second plug, a connecting pipe and an air inlet mechanism; the first plug is provided with a first connecting boss, the second plug is provided with a second connecting boss, two end parts of the connecting pipe are respectively sleeved on the first connecting boss and the second connecting boss, a first sealing ring sleeved on the first connecting boss is arranged between one end part of the connecting pipe and the first plug, and a second sealing ring sleeved on the second connecting boss is arranged between the other end part of the connecting pipe and the second plug; the first plug and the second plug can extrude the first sealing ring and the second sealing ring to deform so as to plug the to-be-detected part of the pipeline; the pipe wall of the connecting pipe is provided with an air hole, and the air inlet mechanism can introduce air to the position between the first plug and the second plug. The invention has simple structure and convenient operation, and can realize the detection of whether the pipeline leaks.
Description
Technical Field
The invention belongs to the technical field related to pipeline leakage detection, and particularly relates to a pipeline leakage detection device.
Background
A pipeline is a device for transporting a gas, liquid or fluid with solid particles, connected by pipes, pipe couplings, valves, etc. The pipelines are usually made of steel, and due to the characteristics of corrosion, cracks and the like of the steel in the using process, particularly the pipelines are usually connected in a welding mode, the pipelines are usually required to be detected regularly or irregularly so as to prevent the situations of fluid leakage or pipeline burst and the like.
At present, many means for detecting a pipe leakage are available, for example, detection means using ultrasonic waves or magnetic flux leakage. However, the above detection methods have high assembly costs and limitations, and thus are difficult to be universally applied to various pipelines.
Disclosure of Invention
In view of the above, it is necessary to provide a device for detecting a leak in a pipeline, which solves the technical problems in the prior art.
The pipeline leakage detection device is used for confirming the leakage position of a pipeline and comprises a first plug, a second plug, a connecting pipe arranged between the first plug and the second plug and an air inlet mechanism; a first connecting boss is arranged in the direction from the first plug to the second plug, a second connecting boss is arranged in the direction from the second plug to the first plug, two end parts of the connecting pipe are respectively sleeved on the first connecting boss and the second connecting boss, a first sealing ring sleeved on the first connecting boss is arranged between one end part of the connecting pipe and the first plug, and a second sealing ring sleeved on the second connecting boss is arranged between the other end part of the connecting pipe and the second plug; the first plug and the second plug can extrude the first sealing ring and the second sealing ring to deform so as to plug the to-be-detected part of the pipeline; the pipe wall of the connecting pipe is provided with an air hole, and the air inlet mechanism can introduce air to the position between the first plug and the second plug.
As a preferable scheme of the present invention, a pull rod is disposed on the first connecting boss, the pull rod penetrates through the second plug, an air passage is disposed in the pull rod, a portion of the pull rod penetrating through the second plug is connected and communicated with an air source, and the pull rod and the air source are matched and formed into the air intake mechanism.
As a preferable scheme of the invention, the air passage comprises a first air flow hole arranged along the axial direction of the pull rod and a second air flow hole connected and communicated with the first air flow hole; the second airflow hole is arranged between the first plug and the second plug.
As a preferable mode of the present invention, the second air flow hole has a hole diameter equal to that of the first air flow hole, and a center line of the second air flow hole is perpendicular to a center line of the first air flow hole.
As a preferable scheme of the invention, the second plug is provided with an ejector rod in a direction departing from the first plug, wherein the pull rod penetrates through an end part of the ejector rod and is movably capped, and the cap can drive the first plug and the second plug to move in opposite directions through the pull rod and the ejector rod.
As a preferred scheme of the present invention, the pull rod is provided with a thread structure, the cap is provided with a thread matching structure, and the cap is screwed to the pull rod through the matching between the thread structure and the thread matching structure.
As a preferable scheme of the present invention, a handle cap is disposed on an end of the top rod, and the cap can abut against the handle cap and push the top rod to move toward the first plug.
As a preferable aspect of the present invention, the length of the thread fitting structure on the cap is greater than the distance between the cap and the stem cap.
As a preferable scheme of the invention, the cover surface of the cap cover is connected with an air pipe communicated with an air channel in the pull rod, and the air pipe is provided with a control valve.
As a preferred scheme of the present invention, the first plug, the first connecting boss and the pull rod are integrated; and/or the second plug, the second connecting boss and the ejector rod are of an integrated structure.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the pipeline leakage detection device provided by the invention utilizes the first sealing ring and the second sealing ring to realize the blocking of the part to be detected of the pipeline, then the blocked pipeline is ventilated, and the detection of whether the pipeline leaks or not is realized by combining the mode of detecting the pressure of gas introduced into the pipeline, so that the detection of the leakage position of the pipeline by the pipeline leakage detection device is realized; meanwhile, the pipeline leakage detecting device is simple in structure and convenient to operate, plugging of a pipeline to be detected is achieved by means of extrusion deformation of the sealing ring, and the application range of the pipeline leakage detecting device is expanded.
Drawings
Fig. 1 is a schematic structural view of a leak detection apparatus for a pipe according to an embodiment of the present invention, which is provided when the apparatus is mounted in a pipe.
10, a first plug; 11. a first connecting boss; 12. a pull rod; 121. an airway; 1211. a first airflow aperture; 1212. a second airflow aperture; 122. a thread structure; 20. a second plug; 21. a second connecting boss; 22. a pull rod; 221. a handle cap; 30. a connecting pipe; 31. air holes; 40. a cap; 41. an air tube; 42. a control valve; 101. a first seal ring; 102. a second seal ring; 200. a pipeline.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, a device for detecting leak in a pipeline according to an embodiment of the present invention includes a first plug 10, a second plug 20, a connecting pipe 30 disposed between the first plug 10 and the second plug 20, and an air inlet mechanism.
In this embodiment, the first plug 10 is provided with a first connecting boss 11 facing the second plug 20, the second plug 20 is provided with a second connecting boss 21 facing the first plug 10, and two ends of the connecting pipe 30 are respectively sleeved on the first connecting boss 11 and the second connecting boss 21, so as to implement the installation of the connecting pipe 30 on the first plug 10 and the second plug 20.
A first sealing ring 101 sleeved on the first connecting boss 11 is arranged between one end of the connecting pipe 30 and the first plug 10, a second sealing ring 102 sleeved on the second connecting boss 21 is arranged between the other end of the connecting pipe 30 and the second plug 20, and the first plug 10 and the second plug 20 can extrude the first sealing ring 101 and the second sealing ring 102 to deform so as to plug the detection part of the pipeline 200. That is to say, when the first plug 10 and the second plug 20 move towards each other, the first plug 10 and the connecting pipe 30 cooperate to press the first sealing ring 101 to deform, and similarly, the second plug 20 cooperates with the connecting pipe 30 to press the second sealing ring 102 to deform, and the deformed first sealing ring 101 and the deformed second sealing ring 102 are used to abut against the pipe wall of the pipeline 200, so as to seal the part of the pipeline 200 located between the first plug 10 and the second plug 20. It should be noted that, when the first plug 10 and the second plug 20 are assembled in the pipe 200 with detection, the first plug 10 and the second plug 20 are in clearance fit with the pipe wall of the pipe 200, so that the first plug 10 and the second plug 20 can move in the pipe 200.
The air hole 31 is formed in the wall of the connecting pipe 30, the air inlet mechanism can introduce air into the position between the first plug 10 and the second plug 20, so that the air introduced into the position between the first plug 10 and the second plug 20 can enter the position between the connecting pipe 30 and the pipeline 200 through the air hole 31 in the connecting pipe 30, when the pipeline 200 to be detected leaks, the entered air can leak outwards from the leakage position of the pipeline 200, the air pressure of the air is reduced, and otherwise, the air pressure value of the air is kept unchanged. That is, in the pipe leakage detecting apparatus of the present embodiment, when the pipe leakage detecting apparatus is operated, it is possible to determine whether or not the pipe 200 is leaked by detecting a gas pressure value introduced between the first plug 10 and the second plug 20, and thus, a pressure gauge may be connected to and communicated with the air intake mechanism.
It should be noted that, when the connection pipe 30 is assembled on the first connection boss 11 and the second connection boss 21, a certain gap is left between the pipe wall of the connection pipe 30 and the pipe wall of the pipeline 200, and specifically, the connection pipe may also be assembled in a clearance fit manner. One or more air holes 31 for air to pass through may be formed in the connection pipe 30 according to the use requirement, and the aperture of the air hole 31 may be specifically set according to the use requirement, which will not be described herein.
In this embodiment, a pull rod 12 is disposed on the first connecting boss 11, the pull rod 12 is disposed through the second plug 20, an air passage 121 is disposed in the pull rod 12, and a portion of the pull rod 12 that passes through the second plug 20 is connected and communicated with an air source (not shown), and the pull rod 12 and the air source are matched and formed into the air inlet mechanism. That is, in the pipe leak detection apparatus of the present embodiment, when operating, the gas source can introduce gas to a position between the first plug 10 and the second plug 20 through the pull rod 12. It should be noted that, the air inlet mechanism is not limited to the illustration shown in the drawings, and for those skilled in the art, the air inlet mechanism may be configured that the first plug 10 and/or the second plug 20 is provided with an air vent, and an air source communicated with the air vent, which will not be described herein.
Specifically, the air path 121 includes a first air flow hole 1211 disposed in an axial direction of the drawbar 12, and a second air flow hole 1212 connected to and communicating with the first air flow hole 1211; the second airflow hole 1212 is disposed between the first plug 10 and the second plug 20, so that when the air intake mechanism is operated, the gas generated by the gas source is guided to a position between the first plug 10 and the second plug 20 through the first airflow hole 1211 and the second airflow hole 1212. Wherein the gas source is preferably an air pump.
Further, the second air flow hole 1212 has an equal diameter to the first air flow hole 1211, and a center line of the second air flow hole 1212 is perpendicular to a center line of the first air flow hole 1211. So that the gas is guided to a position between the first plug 10 and the second plug 20 through the gas channel 121 of the pull rod 12, and enters a position between the wall of the connecting pipe 30 and the wall of the pipeline 200 through the gas hole 31 of the connecting pipe 30.
In this embodiment, the second plug 20 is provided with a top rod 22 facing away from the first plug 10, wherein the pull rod 12 passes through an end of the top rod 22 and is movably covered with a cap 40, and the cap 40 can drive the first plug 10 and the second plug 20 to move towards each other through the pull rod 12 and the top rod 22. That is, the cap 40 can pull the first plug 10 to move toward the second plug 20 through the pull rod 12, and meanwhile, can push the second plug 20 to move toward the first plug 10 through the push rod 22, so as to drive the first plug 10 and the second plug 20 to move toward each other.
Specifically, a thread structure 122 is arranged on the pull rod 12, the cap 40 is provided with a thread matching structure, and the cap 40 is screwed on the pull rod 12 through the matching between the thread structure and the thread matching structure. When the pipe leak detection device of the present embodiment is operated, the cap 40 is screwed on the pull rod 12 and moves in the direction toward the top rod 22, and the cap 40 abuts against the top rod 22, so that the first plug 10 and the second plug 20 can be driven to move toward each other.
Further, a handle cap 221 is disposed on an end portion of the top rod 22, and the cap 40 can abut against the handle cap 221 and push the top rod 22 to move toward the first plug 10. That is, in the present embodiment, the cap 40 is abutted by the cap 221 so that the cap 40 pushes the top rod 22 to move toward the first plug 10.
It can be understood that the portion of the pull rod 12 passing through the top rod 22 has a threaded structure, and in order to ensure that the gas introduced between the first plug 10 and the second plug 20 does not leak out from the gap between the pull rod 12 and the top rod 22, the length of the threaded matching structure on the cap 40 in the present embodiment is greater than the distance between the handle cap 221 and the cap 40, so as to implement the assembly seal between the pull rod 12 and the top rod 22 by the cap 40, thereby ensuring the accuracy of the leakage judgment of the pipeline 200 during the operation of the pipeline leakage detecting device. It should be noted that the assembly between the pull rod 12 and the top rod 22, the second plug 20, or the second connecting boss 22 is not limited to the illustration, and a person skilled in the art may sleeve a rubber sealing ring on a portion of the pull rod 12 located on the top rod 22, the second plug 20, or the second connecting boss 22, and use the rubber sealing ring to realize the assembly sealing between the two.
In addition, the cover surface of the cap 40 is connected with an air pipe 41 communicated with the air passage 121 in the pull rod 12, the air pipe 41 is provided with a control valve 42, so that the air passage 121 in the pull rod 12 is connected and communicated with an air source, and when the pipeline leakage detecting device works, the control valve 42 can be used for controlling the opening and closing of the air passage 121, thereby further facilitating the use of the pipeline leakage detecting device.
As a preferred scheme of the present invention, the first plug 10, the first connecting boss 11 and the pull rod 12 are an integrated structure; and/or the second plug 20, the second connecting boss 21 and the ejector rod 22 are integrated.
As can be seen from the above, when the pipeline leakage detecting device of the present embodiment works, the first sealing ring 101 may be first sleeved on the first connecting boss 11, the second sealing ring 102 may be sleeved on the second connecting boss 21, and then the two end portions of the connecting pipe 30 may be respectively sleeved on the first connecting boss 11 and the second connecting boss 21; then, the assembly is inserted into the pipeline 200 to be detected, when the first plug 10 and the second plug 20 in the pipeline leakage detection device move to the part to be detected of the pipeline 200, the cap 40 is screwed to drive the first plug 10 and the second plug 20 to move oppositely, so that the first sealing ring 101 and the second sealing ring 102 deform due to the extrusion of the connecting pipe 30 and the first plug 10, and the connecting pipe 30 and the second plug 20, and the part to be detected on the pipeline 200 is sealed; and then starting an air source to introduce air to the position between the first plug 10 and the second plug 20 through the upper air passage 121 of the pull rod 12, stopping air supply of the air source when the air pressure of the introduced air is preset air pressure, observing whether the air pressure of the introduced air changes, judging that the part to be detected of the pipeline 200 leaks when the air pressure corresponding to the introduced air is weakened, and otherwise judging that the part to be detected of the pipeline 200 does not leak. It should be noted that the lengths of the pull rod 12 and the ejector rod 22 can be adaptively adjusted according to the position of the pipeline 200 to be detected, so as to ensure that the pipeline leakage detection apparatus can detect the pipeline 200 with a longer length, and the length of the connecting pipe 30 can also be correspondingly set according to the length requirement of the part of the pipeline 200 to be detected, which is not described herein.
In summary, the pipeline leakage detection device provided by the invention uses the first sealing ring and the second sealing ring to realize the blocking of the part to be detected of the pipeline, then the detection of whether the pipeline leaks or not is realized by ventilating the blocked pipeline and combining the mode of detecting the pressure of gas introduced into the pipeline, so that the detection of the pipeline leakage position by the pipeline leakage detection device is realized; meanwhile, the pipeline leakage detecting device is simple in structure and convenient to operate, the pipeline to be detected is plugged by utilizing the extrusion deformation of the two sealing rings, and the application range of the pipeline leakage detecting device is expanded.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express a few embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A pipeline leakage detection device is used for detecting pipeline leakage and is characterized by comprising a first plug, a second plug, a connecting pipe arranged between the first plug and the second plug and an air inlet mechanism; a first connecting boss is arranged in the direction from the first plug to the second plug, a second connecting boss is arranged in the direction from the second plug to the first plug, two end parts of the connecting pipe are respectively sleeved on the first connecting boss and the second connecting boss, a first sealing ring sleeved on the first connecting boss is arranged between one end part of the connecting pipe and the first plug, and a second sealing ring sleeved on the second connecting boss is arranged between the other end part of the connecting pipe and the second plug; the first plug and the second plug can extrude the first sealing ring and the second sealing ring to deform so as to plug the to-be-detected part of the pipeline; the pipe wall of the connecting pipe is provided with an air hole, and the air inlet mechanism can introduce air to the position between the first plug and the second plug.
2. The pipeline leak detection device according to claim 1, wherein a pull rod is arranged on the first connecting boss and penetrates through the second plug, an air passage is formed in the pull rod, a portion of the pull rod penetrating through the second plug is connected and communicated with an air source, and the pull rod and the air source are matched and formed into the air inlet mechanism.
3. The pipe leak detection apparatus according to claim 1, wherein the air passage includes a first air flow hole provided in an axial direction of the draw rod, and a second air flow hole connected to and communicating with the first air flow hole; the second airflow hole is arranged between the first plug and the second plug.
4. The duct leak detection apparatus of claim 3, wherein the second gas flow aperture has an equal aperture diameter to the first gas flow aperture, and wherein the centerline of the second gas flow aperture is perpendicular to the centerline of the first gas flow aperture.
5. The pipe leak detection device according to claim 2, wherein the second plug is provided with an ejector rod in a direction away from the first plug, wherein the pull rod penetrates through a cap movably arranged at the end of the ejector rod, and the cap can drive the first plug and the second plug to move towards each other through the pull rod and the ejector rod.
6. The pipeline leak detection device according to claim 5, wherein the pull rod is provided with a threaded structure, the cap is provided with a threaded matching structure, and the cap is screwed on the pull rod through the matching between the threaded structure and the threaded matching structure.
7. The pipeline leak detection device according to claim 6, wherein a handle cap is provided on an end of the ejector rod, and the cap body can abut against the handle cap and push the ejector rod to move towards the first plug.
8. The pipe leak detection apparatus of claim 7, wherein the length of the thread engagement structure on the cap is greater than the spacing between the stem cap and the cap cover.
9. The pipeline leakage detection device according to claim 5, wherein a gas pipe communicated with the gas channel in the pull rod is connected to the cover surface of the cap, and a control valve is arranged on the gas pipe.
10. The pipeline leak detection device according to claim 5, wherein the first plug, the first connecting boss and the pull rod are provided as an integral structure; and/or the second plug, the second connecting boss and the ejector rod are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155193.3A CN111397814A (en) | 2020-03-09 | 2020-03-09 | Pipeline leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155193.3A CN111397814A (en) | 2020-03-09 | 2020-03-09 | Pipeline leakage detection device |
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| Publication Number | Publication Date |
|---|---|
| CN111397814A true CN111397814A (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010155193.3A Pending CN111397814A (en) | 2020-03-09 | 2020-03-09 | Pipeline leakage detection device |
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| CN (1) | CN111397814A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517557A (en) * | 2020-12-18 | 2021-03-19 | 河北华丰能源科技发展有限公司 | Online cleaning device for gas pipeline |
| CN113252247A (en) * | 2021-04-12 | 2021-08-13 | 无锡先导智能装备股份有限公司 | Test head and air tightness detection system for pipeline |
| CN114166437A (en) * | 2021-12-03 | 2022-03-11 | 成都秦川物联网科技股份有限公司 | Electromechanical valve tightness detection device and method suitable for intelligent manufacturing of Internet of things |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112517557A (en) * | 2020-12-18 | 2021-03-19 | 河北华丰能源科技发展有限公司 | Online cleaning device for gas pipeline |
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| CN114166437A (en) * | 2021-12-03 | 2022-03-11 | 成都秦川物联网科技股份有限公司 | Electromechanical valve tightness detection device and method suitable for intelligent manufacturing of Internet of things |
| CN114166437B (en) * | 2021-12-03 | 2023-06-27 | 成都秦川物联网科技股份有限公司 | Electromechanical valve tightness detection equipment and method suitable for intelligent manufacturing of Internet of things |
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Application publication date: 20200710 |