CN220453456U - Natural gas pipeline welding seam monitoring device - Google Patents
Natural gas pipeline welding seam monitoring device Download PDFInfo
- Publication number
- CN220453456U CN220453456U CN202321815233.8U CN202321815233U CN220453456U CN 220453456 U CN220453456 U CN 220453456U CN 202321815233 U CN202321815233 U CN 202321815233U CN 220453456 U CN220453456 U CN 220453456U
- Authority
- CN
- China
- Prior art keywords
- box body
- natural gas
- white oil
- gas pipeline
- bypass pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000003345 natural gas Substances 0.000 title claims abstract description 34
- 238000003466 welding Methods 0.000 title claims abstract description 33
- 238000012806 monitoring device Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a natural gas pipeline welding seam monitoring device which is connected to a welding seam of a natural gas pipeline and comprises a box body, a bypass pipe and an indication plate; the tank body is sleeved on the natural gas pipeline in a hooping way, so that the welding seam is positioned in the tank body; one end of the bypass pipe is connected to the bottom of the box body, and the other end of the bypass pipe is fixedly connected with the vertically arranged indication plate, so that the indication plate is positioned on one side of the box body; the middle part of the indication board is provided with a cavity with transparent side wall communicated with the inside of the box body through a bypass pipe; the white oil is contained in the box body, the liquid level of the white oil is higher than the upper edge of the welding line, and the white oil enters the cavity through the bypass pipe; when the weld leaks, the air pressure in the tank above the white oil level increases, so that more white oil is forced into the chamber, causing the white oil level in the chamber to rise, and the increased pressure in the tank limits the continued leakage of natural gas. The easy-leakage point is soaked in the white oil, and when natural gas leaks, the white oil is extruded to enable the liquid level in the indication plate to rise, so that the inspection personnel can intuitively identify the leakage phenomenon.
Description
Technical Field
The utility model relates to the technical field of natural gas pipelines, in particular to a welding seam monitoring device for a natural gas pipeline.
Background
When the concentration of the natural gas in the air reaches the deflagration range due to leakage of the natural gas, a large potential safety hazard exists; it is therefore necessary to perform leak testing of natural gas pipelines. Particularly at the weld locations of the pipe, leakage points are easily formed. In the prior art, an infrared detection device is utilized to automatically patrol easily leaked points, special infrared images in a spray shape are formed at the leaked points, and an alarm is sent out after a characteristic image is detected. However, the detection equipment is high in cost, is usually arranged in a scene of high pipeline density, heavy potential safety hazard and the like, such as a gate station, and is used for intensively inspecting a plurality of detection points. But for outdoor pipelines the device is difficult to apply.
Disclosure of Invention
The utility model aims to provide a natural gas pipeline welding seam monitoring device suitable for outdoor use, which is realized by the following technical scheme:
the natural gas pipeline welding seam monitoring device is connected to a welding seam of a natural gas pipeline and comprises a box body, a bypass pipe and an indication plate; the box body is sleeved on the natural gas pipeline in a hooping mode, so that the welding seam is positioned in the box body; one end of the bypass pipe is connected to the bottom of the box body, and the other end of the bypass pipe is fixedly connected with an indication plate which is vertically arranged, so that the indication plate is positioned on one side of the box body; the middle part of the indication board is provided with a cavity with transparent side wall communicated with the inside of the box body through the bypass pipe; the box body is internally provided with white oil, the liquid level of the white oil is higher than the upper edge of the welding line, and the white oil enters the cavity through the bypass pipe; when the weld leaks, the air pressure in the tank above the level of the white oil increases, so that more white oil is forced into the chamber, causing the level of white oil in the chamber to rise, and the elevated pressure in the tank limits continued leakage of natural gas.
The natural gas pipeline welding seam monitoring device is further designed in that a collecting cover located above the welding seam is arranged in the box body.
The natural gas pipeline welding seam monitoring device is further designed in that the collecting cover is fixedly connected above the welding seam through a suspension rod fixedly connected with the inner wall of the upper side of the box body.
The natural gas pipeline welding seam monitoring device is further designed in that the suspension rod extends to the outer side of the box body from the inner side of the box body, a filling hole is formed in the suspension rod in a penetrating mode, and a through hole communicated with the filling hole is formed in the cover wall of the collecting cover; the through hole is internally connected with a screw rod for blocking the filling hole in a threaded manner.
The utility model has the beneficial effects that:
soaking the easy-leakage point in white oil, and extruding the white oil to enable the liquid level in the indicator plate to rise when natural gas leaks, so that a patrol inspector can intuitively identify the leakage phenomenon; on the other hand, as the welding seam part is soaked by the white oil, external oxygen is blocked, and the progress of the oxidation of the welding seam position can be effectively delayed, so that the leakage phenomenon is reduced; the white oil is relatively poor in fluidity, and when slight leakage occurs, the pressure of the white oil is increased, so that a certain degree of blocking effect can be formed on a leakage point, and enough time is reserved for inspection operation.
Drawings
Fig. 1 is a schematic view of an embodiment of the present utility model.
Fig. 2 is a schematic cross-sectional structure of an embodiment.
Fig. 3 is a schematic diagram of an indicator plate structure.
Detailed Description
The utility model is further illustrated by the following figures and examples in conjunction with the description:
the welding seam monitoring device of the natural gas pipeline is connected to the welding seam of the natural gas pipeline 1 and comprises a box body 2, a bypass pipe 3 and an indication board 4; the box body 2 is sleeved on the natural gas pipeline in a hooping mode, so that a welding line is positioned in the box body; specifically, the box body is formed by butt joint of an upper shell and a lower shell, and the part of the box body matched with the outer wall of the natural gas pipeline is subjected to sealing treatment; one end of the bypass pipe 3 is connected to the bottom of the box body, and the other end of the bypass pipe is fixedly connected with the vertically arranged indication plate 4, so that the indication plate is positioned on one side of the box body; the middle part of the indication board 4 is provided with a cavity with transparent side walls communicated with the inside of the box body through the bypass pipe, the cavity is made of glass and can be an integrally formed flat glass pipe 41, the lower part of the cavity is in butt joint with the bypass pipe, the upper end of the cavity is blocked, and liquid level reference lines are marked on two side parts of the cavity; the tank body 2 is internally provided with white oil, the liquid level of the white oil is higher than the upper edge of the welding line, and the white oil enters the cavity through the bypass pipe; when the weld leaks, the air pressure in the tank 2 above the level of white oil increases, so that more white oil is pressed into the chamber, causing the level of white oil in the chamber to rise.
Soaking the easy-leakage point in white oil, and extruding the white oil to enable the liquid level in the indicator plate to rise when natural gas leaks, so that a patrol inspector can intuitively identify the leakage phenomenon; on the other hand, as the welding seam part is soaked by the white oil, external oxygen is blocked, and the progress of the oxidation of the welding seam position can be effectively delayed, so that the leakage phenomenon is reduced; the white oil is relatively poor in fluidity, and when slight leakage occurs, the pressure of the white oil is increased, so that a certain degree of blocking effect can be formed on a leakage point, and enough time is reserved for inspection operation.
The box body 2 is internally provided with a collecting cover 5 positioned above the welding seam. The collecting cover is fixedly connected with a suspension rod 6 on the inner wall of the upper side of the box body through a fixed connection and is arranged above the welding line. The suspension rod extends to the outer side of the box body from the inside of the box body, a filling hole is formed in the suspension rod in a penetrating mode, and a through hole communicated with the filling hole is formed in the cover wall of the collecting cover; the through hole is internally connected with a screw rod 7 for blocking the filling hole in a threaded manner. When slight leakage occurs and the liquid level in the cavity is insufficient to rise, leaked natural gas is concentrated in the collecting cover, the screw is unscrewed, so that the smell of the odorizing agent can be smelled, and the welding line position needs to be maintained immediately or the inspection frequency is improved.
Claims (4)
1. The welding seam monitoring device for the natural gas pipeline is connected to the welding seam of the natural gas pipeline and is characterized by comprising a box body, a bypass pipe and an indication plate; the box body is sleeved on the natural gas pipeline in a hooping mode, so that the welding seam is positioned in the box body; one end of the bypass pipe is connected to the bottom of the box body, and the other end of the bypass pipe is fixedly connected with an indication plate which is vertically arranged, so that the indication plate is positioned on one side of the box body; the middle part of the indication board is provided with a cavity with transparent side wall communicated with the inside of the box body through the bypass pipe; the box body is internally provided with white oil, the liquid level of the white oil is higher than the upper edge of the welding line, and the white oil enters the cavity through the bypass pipe; when the weld leaks, the air pressure in the tank above the level of the white oil increases, so that more white oil is forced into the chamber, causing the level of white oil in the chamber to rise, and the elevated pressure in the tank limits continued leakage of natural gas.
2. A natural gas pipeline weld monitoring device as claimed in claim 1, wherein a collection hood is provided inside the tank above the weld.
3. The device for monitoring the weld of a natural gas pipeline according to claim 2, wherein the collecting cover is fixedly connected above the weld by a suspension rod fixedly connected with the inner wall of the upper side of the tank body.
4. A natural gas pipeline welding seam monitoring device according to claim 3, wherein the suspension rod extends from the inside of the box body to the outside of the box body, a filling hole is arranged through the suspension rod, and a through hole communicated with the filling hole is arranged on the cover wall of the collecting cover; the through hole is internally connected with a screw rod for blocking the filling hole in a threaded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321815233.8U CN220453456U (en) | 2023-07-11 | 2023-07-11 | Natural gas pipeline welding seam monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321815233.8U CN220453456U (en) | 2023-07-11 | 2023-07-11 | Natural gas pipeline welding seam monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220453456U true CN220453456U (en) | 2024-02-06 |
Family
ID=89736175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321815233.8U Active CN220453456U (en) | 2023-07-11 | 2023-07-11 | Natural gas pipeline welding seam monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220453456U (en) |
-
2023
- 2023-07-11 CN CN202321815233.8U patent/CN220453456U/en active Active
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