CN220567089U - Pre-buried type natural gas pipeline leakage auxiliary detection device - Google Patents
Pre-buried type natural gas pipeline leakage auxiliary detection device Download PDFInfo
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- CN220567089U CN220567089U CN202321456961.4U CN202321456961U CN220567089U CN 220567089 U CN220567089 U CN 220567089U CN 202321456961 U CN202321456961 U CN 202321456961U CN 220567089 U CN220567089 U CN 220567089U
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- natural gas
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- detection device
- pipe
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 238000001514 detection method Methods 0.000 title claims abstract description 105
- 239000003345 natural gas Substances 0.000 title claims abstract description 53
- 238000005070 sampling Methods 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 17
- 239000000523 sample Substances 0.000 claims abstract description 16
- 239000002689 soil Substances 0.000 claims abstract description 13
- 238000010030 laminating Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides an auxiliary detection device is leaked to pre-buried natural gas pipeline, includes the detection tube of pre-buried in natural pipeline junction top soil, the upper end of detection tube extends to the horizon top, and the part intercommunication that the detection tube is located the horizon top is equipped with the sampling tube that is used for the sample to detect, has offered on the sampling tube and has supplied to detect sensor probe male opening, and the intraductal vertical slip of detection has the pull rod, and the lower extreme of pull rod is connected with and laminates gliding piston with the detection tube inner wall, and the upper end of pull rod extends to outside the detection tube to supply the inspection personnel pull, sampling tube and detection tube intercommunication department are located piston sliding path. The device has lower detection cost, can improve the efficiency of natural gas leakage detection, and is particularly suitable for natural gas leakage detection in dry soil areas because the piston moves upwards to pump the gas in the soil near the joint of the natural gas pipe into the detection pipe.
Description
Technical Field
The utility model relates to the technical field of natural gas leakage detection, in particular to an embedded type auxiliary detection device for natural gas pipeline leakage.
Background
The natural gas pipe is buried in the underground for transportation, and the natural gas pipe is easy to leak due to soil corrosion, construction quality or external stress and the like due to overlong burying time, and the natural gas pipe is formed by connecting a plurality of sections of natural gas pipes, so that the connecting part of each section of natural gas pipe is weak, and the connecting part of the natural gas pipe and the natural gas pipe is in the leakage condition.
The utility model discloses a natural gas pipeline structure with leak automated inspection function among the prior art with bulletin number CN 214745016U, this structure will set up a inclosed detection space in the junction of natural gas pipe and natural gas pipe through a close container, built-in methane detector, signal transmitter and alarm lamp in close container, whether leak through the probe of methane detector, if natural gas leaks the back, feed back power control module through methane detector, send the terminal by signal transmitter again, can inform relevant personnel at any time to carry out the maintenance of pipeline, sealed detection space detection precision is higher simultaneously. However, the cost of the detection device is too high, and the electronic devices are more, so that the later-stage failure is easy to occur.
In order to save detection cost, in the actual work of a natural gas enterprise, leak detection personnel usually adopt a leak detection method that special punching equipment such as a water drill, a steel drill and the like is firstly used for punching the pavement and soil above a pipeline, and then a natural gas detector is used for detecting the concentration of natural gas in the hole.
Disclosure of Invention
The utility model aims to provide an embedded type auxiliary detection device for natural gas pipeline leakage, which has low detection cost and can improve the efficiency of natural gas leakage detection.
The utility model solves the technical problems, and adopts the following technical scheme: the utility model provides an auxiliary detection device is leaked to pre-buried natural gas pipeline, includes the detection tube of pre-buried in natural pipeline junction top soil, the upper end of detection tube extends to the ground level top, and the part intercommunication that the detection tube is located the ground level top is equipped with the sampling tube that is used for the sample to detect, has offered on the sampling tube and has supplied to detect sensor probe male opening, and vertical slip has the pull rod in the detection tube, and the lower extreme of pull rod is connected with and detects the gliding piston of intraductal wall laminating of detection tube, and the upper end of pull rod extends to outside the detection tube to supply the pull of detection personnel, sampling tube and detection tube intercommunication department are located piston sliding path, when piston upwards slides sampling tube and detection tube intercommunication department, the gaseous entering sampling tube that the piston took out supplies the detection probe to detect.
As a further optimization of the embedded type natural gas pipeline leakage auxiliary detection device, the detection pipe comprises a pipe body and an upper end cover fixed at the upper end port of the detection pipe through screws, and a through hole for the drawing pull rod to vertically slide and pass through is formed in the upper end cover.
As a further optimization of the embedded type natural gas pipeline leakage auxiliary detection device, the upper end of the drawing rod is provided with external threads, and the inner wall of the through hole is provided with internal threads matched with the external threads.
As a further optimization of the embedded type natural gas pipeline leakage auxiliary detection device, a connecting block is arranged on one side, facing towards the drawing rod, of the piston, and the drawing rod is connected with the connecting block in a rotating mode through a ball head structure.
As a further optimization of the embedded type natural gas pipeline leakage auxiliary detection device, the part of the pipe body above the sampling pipe is provided with an upper vent hole communicated with the outside.
As a further optimization of the embedded type natural gas pipeline leakage auxiliary detection device, a positioning ring for preventing the piston from sliding out of the pipeline body is arranged in the lower end of the pipeline body.
As a further optimization of the embedded type auxiliary detection device for natural gas pipeline leakage, the elastic rubber ring which is convenient for clamping and fixing the sensing probe is embedded in the opening.
As a further optimization of the embedded type natural gas pipeline leakage auxiliary detection device, the upper end of the drawing rod is welded with a sleeve which assists the drawing rod to rotate.
As a further optimization of the embedded type natural gas pipeline leakage auxiliary detection device, the detection pipe is provided with a detachable end cover for closing the opening.
The utility model has the following beneficial effects:
the device is characterized in that the detection tube is embedded at the joint of the natural gas tube and the natural gas tube, if natural gas leakage occurs, the leaked gas can enter the detection tube, a piston is arranged in the detection tube, the upper end of the piston is provided with a drawing rod which is convenient to draw, when leakage detection is needed, the piston is drawn upwards by the drawing rod to move the piston, the gas in the soil near the joint of the natural gas tube and the natural gas tube is drawn into the detection tube, the piston is controlled to move upwards, the drawn gas enters a sampling tube communicated with the detection tube, at the moment, a detection probe is only required to be inserted into an opening in the sampling tube, whether the gas leakage occurs at the joint of the tube and the tube can be detected, the detection cost of the device is low, the leakage detection efficiency of the natural gas can be improved, and the device is particularly suitable for leakage detection of the natural gas in the soil near the joint of the natural gas tube because the movable piston moves upwards.
Drawings
FIG. 1 is a schematic diagram of a practical detecting device;
FIG. 2 is a schematic view of a partial enlarged structure at A in FIG. 1;
reference numerals: 1. natural pipeline, 2, natural pipeline junction, 3, detecting tube, 301, upper end cover, 302, body, 303, screw, 4, ground level, 5, pull rod, 6, holding ring, 7, piston, 8, sampling tube, 9, opening, 10, detachable end cover, 11, elastic rubber ring, 12, vent hole, 13, sleeve, 14, external screw thread, 15, internal screw thread, 17, perforation, 18, connecting block.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
As shown in fig. 1-2, this embodiment provides an auxiliary detection device for leakage of a pre-buried natural gas pipeline, which includes a detection tube 3 pre-buried in soil above a natural pipeline connection 2, wherein the lower end of the detection tube 3 faces the natural pipeline connection 2, and the upper end of the detection tube 3 extends above a ground plane 4. The part of the detection tube 3 above the ground plane 4 is communicated with a sampling tube 8 for sampling and detecting, an opening 9 for inserting a detection sensor probe is formed in the sampling tube 8, and when natural gas leaks at the natural pipeline joint 2, the leaked gas can enter the detection tube 3. When the gas leakage detection is carried out on the natural pipeline connecting position 2, the gas in the detection pipe 3 is detected only by the opening 9 into which the detection sensor probe is inserted, and whether the gas leakage occurs on the natural pipeline connecting position 2 is judged according to detected data.
In order to fix the probe of the detection sensor, the elastic rubber ring 11 which is convenient for the clamping and fixing of the sensing probe is embedded at the opening 9, and the detection sensor is supported in the whole process without detection personnel in the detection process. Meanwhile, a detachable end cover 10 for closing the opening 9 is arranged on the detection tube 3, and when the detection is not performed, the opening 9 is closed to prevent sundries from entering the detection tube 3.
Because the leakage occurs at the natural pipe joint 2, the leaked gas is diffused in the soil near the natural pipe joint 2, and the leakage gas is less in the detection pipe 3. In order to improve detection accuracy, the device is provided with a drawing rod 5 in the detection tube 3 in a vertical sliding manner, the lower end of the drawing rod 5 is connected with a piston 7 which is attached to the inner wall of the detection tube 3 in a sliding manner, and the upper end of the drawing rod 5 extends out of the detection tube 3 so as to be drawn by detection personnel. When the leak detection is needed, a detector moves upwards through the piston 7 by pulling the pull rod 5, and then the suction force generated by the piston pumps the gas in the soil near the natural pipeline joint 2 into the detection pipe 3, because the communication part of the sampling pipe 8 and the detection pipe 3 is positioned on the sliding path of the piston 7, the pumped gas can enter the sampling pipe 8 communicated with the detection pipe 3 by controlling the piston 7 to move upwards so as to be detected. Because the upward movement of the piston 7 can draw gas from the soil in the vicinity of the natural pipe joint 2 into the detection pipe 3, if natural gas leakage occurs, the piston 7 can allow more leaked gas to enter the detection pipe 3, thereby improving accuracy of detection data.
The detection tube 3 in the utility model is composed of a tube body 302 and an upper end cover 301 fixed at the upper end port of the detection tube 3 through a screw 303, wherein the upper end cover 301 is provided with a perforation 17 for the vertical sliding penetration of the pull rod 5. In order to improve the service life, the pipe body 302 and the upper end cover 301 are made of wear-resistant plastic, the upper end cover 301 is detachably connected with the upper end port of the detection pipe 3 through the screw 303, and the piston 7 is convenient to maintain after later replacement.
Because the part of the rod body of the drawing rod 5 is positioned outside, in order to prevent the drawing rod 5 from being mistakenly touched and drawn, the upper end of the drawing rod 5 is provided with an external thread 14, the inner wall of the through hole 17 is provided with an internal thread 15 matched with the external thread 14, and the position of the drawing rod 5 is locked through the matching of the external thread 14 and the internal thread 15 under the condition that the drawing rod 5 is not used.
In order to prevent the piston 7 from being attached to the inside of the pipe body 302, the piston 7 is not easy to rotate when the pull rod 5 rotates, and therefore, a connecting block 18 is arranged on one side of the piston 7 facing the pull rod 5, and the pull rod 5 is rotatably connected with the connecting block 18 through a ball head structure.
In order to facilitate the lifting of the piston 7 and to discharge the gas in the tube 302 above the piston 7, an upper vent hole 12 communicating with the outside is provided in the portion of the tube 302 above the sampling tube 8.
In this embodiment, a positioning ring 6 is provided to prevent the piston 7 and the sliding out tube 302 from sliding out of the tube 302.
In this embodiment, in order to rotate the pull rod 5 quickly, a sleeve 13 for assisting the pull rod 5 to rotate is welded at the upper end of the pull rod 5, and the side wall of the sleeve 13 is welded with the upper end of the pull rod 5. By inserting the lever into the sleeve 13, the sleeve 13 can be easily rotated by the principle of leverage.
The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the utility model.
Claims (9)
1. An auxiliary detection device is leaked to pre-buried formula natural gas pipeline, its characterized in that: including buried in soil dry region natural pipeline junction (2) in advance detect pipe (3), detect pipe (3)'s upper end extends to ground level (4) top, detect pipe (3) are located the part intercommunication of ground level (4) top and are equipped with sampling tube (8) that are used for the sample to detect, set up on sampling tube (8) and supply detection sensor probe male opening (9), vertical slip has pull rod (5) in detect pipe (3), the lower extreme of pull rod (5) is connected with and detects pipe (3) inner wall laminating gliding piston (7), the upper end of pull rod (5) extends to outside detect pipe (3) for detect personnel pull, sampling tube (8) and detect pipe (3) intercommunication department are located piston (7) slide path, when piston (7) upwards slide sampling tube (8) and detect pipe (3) intercommunication department, the gas that piston (7) were taken out gets into in sampling tube (8) and supplies the detection probe to detect.
2. The pre-buried natural gas pipeline leakage auxiliary detection device according to claim 1, wherein: the detection tube (3) comprises a tube body (302) and an upper end cover (301) fixed at the upper end port of the detection tube (3) through a screw (303), wherein a through hole (17) for the drawing pull rod (5) to vertically slide and penetrate is formed in the upper end cover (301).
3. The pre-buried natural gas pipeline leakage auxiliary detection device according to claim 2, wherein: the upper end of the drawing rod (5) is provided with an external thread (14), and the inner wall of the through hole (17) is provided with an internal thread (15) matched with the external thread (14).
4. A pre-buried natural gas pipeline leakage auxiliary detection device according to claim 3, wherein: one side of the piston (7) facing the drawing pull rod (5) is provided with a connecting block (18), and the drawing pull rod (5) is rotationally connected with the connecting block (18) through a ball head structure.
5. The pre-buried natural gas pipeline leakage auxiliary detection device according to claim 2, wherein: the part of the tube body (302) above the sampling tube (8) is provided with an upper vent hole (12) communicated with the outside.
6. The pre-buried natural gas pipeline leakage auxiliary detection device according to claim 2, wherein: the positioning ring (6) for preventing the piston (7) from sliding out of the pipe body (302) is arranged in the lower end of the pipe body (302).
7. The pre-buried natural gas pipeline leakage auxiliary detection device according to claim 1, wherein: an elastic rubber ring (11) which is convenient for the clamping and fixing of the sensing probe is embedded in the opening (9).
8. The pre-buried natural gas pipeline leakage auxiliary detection device according to claim 1, wherein: the upper end of the drawing rod (5) is welded with a sleeve (13) for assisting the drawing rod (5) to rotate.
9. The pre-buried natural gas pipeline leakage auxiliary detection device according to claim 1, wherein: the detection tube (3) is provided with a detachable end cover (10) for closing the opening (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321456961.4U CN220567089U (en) | 2023-06-09 | 2023-06-09 | Pre-buried type natural gas pipeline leakage auxiliary detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321456961.4U CN220567089U (en) | 2023-06-09 | 2023-06-09 | Pre-buried type natural gas pipeline leakage auxiliary detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220567089U true CN220567089U (en) | 2024-03-08 |
Family
ID=90094338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321456961.4U Active CN220567089U (en) | 2023-06-09 | 2023-06-09 | Pre-buried type natural gas pipeline leakage auxiliary detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220567089U (en) |
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2023
- 2023-06-09 CN CN202321456961.4U patent/CN220567089U/en active Active
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