CN220623089U - Leak detection mechanism and underground pipeline quality detector - Google Patents
Leak detection mechanism and underground pipeline quality detector Download PDFInfo
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- CN220623089U CN220623089U CN202322409084.1U CN202322409084U CN220623089U CN 220623089 U CN220623089 U CN 220623089U CN 202322409084 U CN202322409084 U CN 202322409084U CN 220623089 U CN220623089 U CN 220623089U
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- sealing cover
- fixedly connected
- detection mechanism
- upper sealing
- sealed cowling
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- 230000007246 mechanism Effects 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 118
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 62
- 239000003345 natural gas Substances 0.000 abstract description 31
- 239000007789 gas Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses a leakage detection mechanism and an underground pipeline quality detector, and relates to the field of pipeline detection. Leak hunting mechanism, including lower sealed cowling and last sealed cowling, can dismantle through fixing bolt between lower sealed cowling and the last sealed cowling and be connected, still include: the gas detector is fixedly connected to the upper sealing cover, and the detection end of the gas detector extends into the upper sealing cover; the pipeline quality detector comprises a leakage detection mechanism and a movable base, wherein a supporting rod is arranged between the movable base and a lower sealing cover; compared with the prior art, the sealing cover is arranged at the joint of the pipeline, so that the first time of the leakage position can be notified to the staff, the joint can be effectively plugged, the sealing cover is prevented from being damaged under the action of larger air pressure, the sealing effect on the natural gas pipeline is lost, the long time is effectively strived for the arrival of the staff, and the sealing cover is suitable for popularization and use.
Description
Technical Field
The utility model belongs to the technical field of pipeline detection, and particularly relates to a leakage detection mechanism and an underground pipeline quality detector.
Background
The pipeline is a device for conveying gas, liquid or fluid with solid particles, which is formed by connecting pipes, pipe connectors, valves and the like, and along with the continuous development of pipeline transportation industry, the pipeline is increased, the laying distance of the pipeline is prolonged, the service life of the pipeline is prolonged, and factors such as equipment aging corrosion, running abrasion, geographical and climate environment changes, artificial damage and the like which cannot be avoided are increased, and once leakage occurs, the pipeline leakage detection device is required to detect in real time.
Natural gas is taken as a clean and efficient chemical energy source, is favored by people, is a most common mode of natural gas transportation, is classified into a buried mode and an open-air mode according to the environment, and can leak out of the pipeline due to the influence of various factors, particularly, the joint of every two pipelines is weakest, so that a side leakage device is required to be installed at the joint of the two pipelines to detect the natural gas in real time, thereby avoiding potential safety hazards, in the prior art, a sealing cover is usually installed at the joint of the pipelines, and a gas detector is installed in the sealing cover to detect the joint in real time, but the side leakage mode has certain defects: when the pipeline joint leaks, the natural gas in the sealing cover can be gradually increased, and the air pressure can be continuously increased, so that the sealing cover can be damaged due to the influence of the air pressure, and the natural gas can be leaked to the outside.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a leak detection mechanism and an underground pipeline quality detector which can overcome the problems or at least partially solve the problems.
In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that: leak hunting mechanism, including lower sealed cowling and last sealed cowling, can dismantle through fixing bolt between lower sealed cowling and the last sealed cowling and be connected, still include: the gas detector is fixedly connected to the upper sealing cover, and the detection end of the gas detector extends into the upper sealing cover; the semicircular sealing plates are arranged in the lower sealing cover and the upper sealing cover, and the two semicircular sealing plates are symmetrically arranged; the hollow shell is symmetrically and fixedly arranged in the middle of the outer walls of the lower sealing cover and the upper sealing cover; the tension spring is fixedly arranged in the hollow shell; the sliding plate is hermetically and slidingly connected in the hollow shell and fixedly connected with the tension spring; the connecting rods are fixedly connected to one end, far away from the tension springs, of the sliding plate, and one ends of the two groups of connecting rods, penetrating through the lower sealing cover and the upper sealing cover, are fixedly connected with the adjacent semicircular sealing plates respectively; the air ducts are symmetrically communicated with the lower sealing cover and the upper sealing cover, and one ends of the two air ducts, which are far away from the lower sealing cover and the upper sealing cover, are respectively communicated with the air inlets of the adjacent hollow shells.
In order to facilitate better plugging of the pipeline connection part, further, the semicircular sealing plate is arranged in a concave shape.
In order to be convenient for avoid opening lower sealed cowling, go up the sealed cowling after, a large amount of natural gas that pile up overflows to the natural gas concentration is too high around, and further, down sealed cowling and last sealed cowling all are equipped with the three-way pipe with between the adjacent hollow shell respectively, two air inlets of three-way pipe are linked together with the gas vent of adjacent lower sealed cowling, last sealed cowling, hollow shell respectively, control valve is all installed to two air inlets department of three-way pipe.
In order to reduce the overall weight of the side leakage mechanism, further, the lower sealing cover and the upper sealing cover are both plastic covers.
The pipeline quality detector comprises a leakage detection mechanism and a movable base, wherein a supporting rod is arranged between the movable base and the lower sealing cover.
In order to be convenient for carry out corresponding regulation to the height of side leakage mechanism, improve the suitability of this detector, furthermore, fixed mounting has the lift pneumatic cylinder on the removal base, the telescopic end fixedly connected with push pedal of lift pneumatic cylinder, bracing piece fixed connection is in the push pedal, the upper end and the lower sealed cowling fixed connection of bracing piece.
After the technical scheme is adopted, compared with the prior art, the utility model has the following beneficial effects: according to the utility model, through the matched use of the lower sealing cover, the upper sealing cover, the fixing bolt, the gas detector, the hollow shell, the tension spring, the sliding plate, the connecting rod, the semicircular sealing plate and the like, when leakage occurs at the joint between two pipelines, compared with the prior art, the mode that the sealing cover is only arranged at the joint of the pipelines, the leakage position can be notified to workers at the first time, the joint can be effectively plugged, the sealing cover is prevented from being damaged under the action of larger air pressure, so that the sealing effect on the natural gas pipeline is lost, and longer time is effectively strived for the arrival of the workers, and the sealing device is suitable for popularization and use.
Drawings
FIG. 1 is a schematic structural view of a leak detection mechanism;
FIG. 2 is a schematic diagram of the internal structure of the leak detection mechanism with the upper and lower seal caps broken away;
FIG. 3 is a schematic diagram II of the internal structure of the upper seal cap and the lower seal cap of the leak detection mechanism after the upper seal cap and the lower seal cap are cut away;
FIG. 4 is a schematic diagram of an underground pipeline quality detector;
fig. 5 is a schematic diagram of a quality detector for underground pipes.
In the figure: 1. a lower seal cap; 2. an upper seal cover; 3. a fixing bolt; 4. a gas detector; 5. a hollow shell; 501. a tension spring; 502. a sliding plate; 503. a connecting rod; 504. a semicircular sealing plate; 6. an air duct; 7. a three-way pipe; 8. a movable base; 801. a lifting hydraulic cylinder; 802. a push plate; 803. and (5) supporting the rod.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.
Example 1:
referring to fig. 1-3, the leak detection mechanism comprises a lower seal cover 1 and an upper seal cover 2, wherein the lower seal cover 1 and the upper seal cover 2 are detachably connected through a fixing bolt 3, and the leak detection mechanism further comprises: the gas detector 4 is fixedly connected to the upper sealing cover 2, and the detection end of the gas detector 4 extends into the upper sealing cover 2; the semicircular sealing plates 504 are arranged in the lower sealing cover 1 and the upper sealing cover 2, and the two semicircular sealing plates 504 are symmetrically arranged; the hollow shell 5 is symmetrically and fixedly arranged in the middle of the outer walls of the lower sealing cover 1 and the upper sealing cover 2; a tension spring 501 fixedly installed in the hollow case 5; the sliding plate 502 is hermetically and slidingly connected in the hollow shell 5 and is fixedly connected with the tension spring 501; the connecting rods 503 are fixedly connected to one end of the sliding plate 502 far away from the tension spring 501, and one ends of the two groups of connecting rods 503 penetrating through the lower sealing cover 1 and the upper sealing cover 2 are respectively fixedly connected with the adjacent semicircular sealing plates 504; the air ducts 6 are symmetrically connected to the lower sealing cover 1 and the upper sealing cover 2, and one ends of the two air ducts 6 far away from the lower sealing cover 1 and the upper sealing cover 2 are respectively connected with the air inlets of the adjacent hollow shells 5.
When natural gas pipelines are paved, a plurality of pipelines are required to be used, sealing connection is carried out between every two adjacent pipelines, the sealing effect of the joint between every two pipelines is weaker than that of sealing at other positions, therefore, the joint between the pipelines is the most likely position for leakage, after the pipelines are connected and installed, in order to facilitate real-time detection of the sealing performance of the joint between the pipelines, so that workers can know whether the pipelines are leaked or not for the first time, when the pipelines are connected, a plurality of groups of side leakage mechanisms can be respectively moved to the joint position of every two pipelines, then the lower sealing cover 1 and the upper sealing cover 2 can be clamped at the joint position of the pipelines, the lower sealing cover 1 and the upper sealing cover 2 are fixedly installed through the fixing bolts 3, then the gas detector 4 and a master controller in a control room are connected through signals, and then the above actions are sequentially repeated, so that the installation work of the side leakage mechanism can be carried out at the joint position between every two pipelines;
when a certain pipeline joint leaks, natural gas leaks into a cavity formed between the lower sealing cover 1 and the upper sealing cover 2 through a joint gap, then the gas detector 4 can detect the content of the natural gas in the cavity in real time, the gas detector 4 can transmit detected data to a master controller in a control room in real time, workers in the control room can know the specific leakage place of the natural gas pipeline conveniently, then a natural gas conveying main valve can be closed, the continuous conveying of the natural gas is stopped, and an maintainer is notified to quickly go to the site for maintenance, even if the conveying main valve is closed, more natural gas still exists in the pipeline, so that the natural gas can continuously leak, and more natural gas is accumulated between the lower sealing cover 1 and the upper sealing cover 2, because the cavity formed between the lower sealing cover 1 and the upper sealing cover 2 is communicated with the hollow shell 5 through the air duct 6, natural gas is also conveyed in the hollow shell 5, and the sliding plate 502 overcomes the tensile force of the tension spring 501 to move under the action of natural gas pressure along with the continuous increase of the natural gas pressure, and then drives the two semicircular sealing plates 504 to move towards the joint of the two pipelines through the connecting rod 503 until the two semicircular sealing plates 504 are closely attached to the joint of the pipelines, the joint of the pipelines can be plugged, continuous leakage of the natural gas is avoided, compared with the prior art, the joint of the pipelines can be effectively plugged, continuous leakage of the natural gas is avoided, so that the sealing cover is damaged under the action of the atmospheric pressure, the effect of the natural gas sealing is lost, the method effectively strives for longer time for the presence of the maintainer, and is suitable for popularization and use.
Example 2:
referring to fig. 1 to 3, the leak detection mechanism is substantially the same as that of embodiment 1, and further: the semicircular sealing plates 504 are arranged in a concave shape, and are arranged in a concave shape when the pipe joint is leaked, and when the pipe joint moves under the downward pressure of natural gas in the hollow shell 5, the semicircular sealing plates 504 can be clamped at the joint of two pipes, so that the pipe joint is conveniently sealed, and the sealing effect of the pipe joint is further improved.
The lower sealing cover 1 and the upper sealing cover 2 are respectively provided with a three-way pipe 7 between the adjacent hollow shell 5, two air inlets of the three-way pipe 7 are respectively communicated with the air outlets of the adjacent lower sealing cover 1, the upper sealing cover 2 and the hollow shell 5, and control valves are respectively arranged at the two air inlets of the three-way pipe 7, when workers arrive at the site and need to treat leakage, the two three-way pipes 7 are respectively communicated with the gas collecting bottle, then the control valves are opened, and the air extracting equipment in the gas collecting bottle is started to extract natural gas in the cavity formed by the lower sealing cover 1 and the upper sealing cover 2 and natural gas in the hollow shell 5, so that the leaked natural gas can be recovered, the waste of the natural gas is avoided, and meanwhile, the condition that a great amount of accumulated natural gas overflows after the lower sealing cover 1 and the upper sealing cover 2 are opened is avoided, so that the concentration of surrounding natural gas is too high, and the maintenance safety of the workers is effectively ensured.
The lower sealing cover 1 and the upper sealing cover 2 are both plastic covers, and the overall weight of the side leakage mechanism can be reduced by making the lower sealing cover 1 and the upper sealing cover 2 made of plastic with lighter mass, so that the influence of the side leakage mechanism on the sealing performance of the pipeline is effectively reduced due to the influence of the side leakage mechanism on the sealing connection between two pipelines caused by the fact that the side leakage mechanism applies larger downward pressure to the connection between two pipelines is avoided.
Example 3:
referring to fig. 4 to 5, the pipeline quality detector comprises a leak detection mechanism and further comprises a movable base 8, wherein a supporting rod 803 is arranged between the movable base 8 and the lower sealing cover 1;
a lifting hydraulic cylinder 801 is fixedly arranged on the movable base 8, a push plate 802 is fixedly connected to the telescopic end of the lifting hydraulic cylinder 801, a supporting rod 803 is fixedly connected to the push plate 802, and the upper end of the supporting rod 803 is fixedly connected with the lower sealing cover 1.
When the detector needs to be installed at the joint between every two pipelines, the detector can be pushed by the movable base 8 at the moment, the detector can be moved to the joint between the pipelines, the lifting hydraulic cylinder 801 can be controlled to drive the lower sealing cover 1 to descend at the moment, then the lower sealing cover 1 can be moved to the position right below the joint, then the lower sealing cover 1 can be controlled to move upwards by the lifting hydraulic cylinder 801, after the lower sealing cover 1 is attached to the two pipelines, the upper sealing cover 2 can be buckled between the two pipelines at the moment, the lower sealing cover 1 and the upper sealing cover 2 are connected and fixed through the fixing bolts 3, so that the joint between the two pipelines can be sealed, then the gas detector 4 and the main control room can be connected through electric signals, the tightness of the joint between the two pipelines can be detected in real time, workers can conveniently move the detector through the arrangement of the movable base 8, the height of the lifting hydraulic cylinder 801 can be correspondingly adjusted according to the height of the pipelines, and the applicability of the side leakage mechanism can be effectively improved.
The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any way, although the present utility model has been described in the preferred embodiments, and is not limited thereto.
Claims (8)
1. Leak hunting mechanism, including lower sealed cowling (1) and last sealed cowling (2), can dismantle through fixing bolt (3) between lower sealed cowling (1) and the last sealed cowling (2) and be connected, its characterized in that still includes:
the gas detector (4) is fixedly connected to the upper sealing cover (2), and the detection end of the gas detector (4) extends into the upper sealing cover (2);
the semicircular sealing plates (504) are arranged in the lower sealing cover (1) and the upper sealing cover (2), and the two semicircular sealing plates (504) are symmetrically arranged;
the hollow shell (5) is symmetrically and fixedly arranged in the middle of the outer walls of the lower sealing cover (1) and the upper sealing cover (2);
a tension spring (501) fixedly arranged in the hollow shell (5);
the sliding plate (502) is hermetically and slidingly connected in the hollow shell (5) and is fixedly connected with the tension spring (501);
the connecting rods (503) are fixedly connected to one end, far away from the tension springs (501), of the sliding plate (502), and two groups of connecting rods (503) penetrate through one ends of the lower sealing cover (1) and the upper sealing cover (2) and are respectively fixedly connected with the adjacent semicircular sealing plates (504);
the air ducts (6) are symmetrically communicated with the lower sealing cover (1) and the upper sealing cover (2), and one ends, far away from the lower sealing cover (1) and the upper sealing cover (2), of the two air ducts (6) are respectively communicated with the air inlets of the adjacent hollow shells (5).
2. The leakage detection mechanism according to claim 1, wherein the semicircular sealing plate (504) is concavely arranged.
3. The leak detection mechanism according to claim 1, wherein a three-way pipe (7) is arranged between the lower sealing cover (1) and the upper sealing cover (2) and the adjacent hollow shell (5) respectively, and two air inlets of the three-way pipe (7) are communicated with the air outlets of the adjacent lower sealing cover (1), the upper sealing cover (2) and the hollow shell (5) respectively.
4. A leak detection mechanism according to claim 3, characterized in that control valves are mounted at both air inlets of the tee (7).
5. The leak detection mechanism according to claim 1, wherein the lower seal cap (1) and the upper seal cap (2) are both plastic caps.
6. The pipeline quality detector comprises the leak detection mechanism as claimed in claim 1, and further comprises a movable base (8), wherein a supporting rod (803) is arranged between the movable base (8) and the lower sealing cover (1).
7. The pipeline quality detector according to claim 6, wherein a lifting hydraulic cylinder (801) is fixedly installed on the movable base (8), a push plate (802) is fixedly connected to a telescopic end of the lifting hydraulic cylinder (801), and the support rod (803) is fixedly connected to the push plate (802).
8. The pipeline quality detector according to claim 7, wherein the upper end of the support bar (803) is fixedly connected with the lower seal cap (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322409084.1U CN220623089U (en) | 2023-09-06 | 2023-09-06 | Leak detection mechanism and underground pipeline quality detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322409084.1U CN220623089U (en) | 2023-09-06 | 2023-09-06 | Leak detection mechanism and underground pipeline quality detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220623089U true CN220623089U (en) | 2024-03-19 |
Family
ID=90225922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322409084.1U Active CN220623089U (en) | 2023-09-06 | 2023-09-06 | Leak detection mechanism and underground pipeline quality detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220623089U (en) |
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2023
- 2023-09-06 CN CN202322409084.1U patent/CN220623089U/en active Active
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