CN203519468U - On-line corrosion monitoring device for natural gas pipeline - Google Patents
On-line corrosion monitoring device for natural gas pipeline Download PDFInfo
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- CN203519468U CN203519468U CN201320546906.4U CN201320546906U CN203519468U CN 203519468 U CN203519468 U CN 203519468U CN 201320546906 U CN201320546906 U CN 201320546906U CN 203519468 U CN203519468 U CN 203519468U
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- natural gas
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Abstract
The utility model provides an on-line corrosion monitoring device for a natural gas pipeline. The on-line corrosion monitoring device for the natural gas pipeline comprises a detection pipeline which is connected with the natural gas pipeline in parallel. The on-line corrosion monitoring device is characterized in that valves are mounted at an inlet and an outlet of the detection pipeline respectively; the middle part of the detection pipeline is connected with a stifling cover through a flange; and an electrode array corrosion sensor is mounted in the stifling cover. Due to the adoption of the electrode array corrosion sensor, corrosion condition of the natural gas pipeline can be monitored in real time, particularly, the local corrosion condition can be monitored; the on-line corrosion monitoring device for the natural gas pipeline is capable of monitoring corrosion condition conveniently and reliably; meanwhile, the valves are arranged at two ends of the detection pipeline, the valves on two sides need to be closed during assembling and disassembling of equipment, thus the problem of inconvenient high-pressure pipeline monitoring can be avoided.
Description
technical field:
The utility model relates to a kind of natural gas line on-line corrosion monitoring device, belongs to nondestructive testing technique field.
background technology:
Along with economic fast development, the heavy demand of people to rock gas, recent year has been built a large amount of buried high pressure gas pipelines.A large amount of natural gas lines is embedded in underground, due to soil corrosion, can cause pipe perforation, causes that the seepage of oil, gas, water causes very large loss, and the leakage of combustion gas causes the major accidents such as fire, blast sometimes, even causes casualties.The outer corrosion of buried pipeline is mainly galvanic corrosion, and its concrete form mainly comprises micro-cell corrosion, macro cell corrosion, microbiological corrosion and stray current corrosion etc.Micro-cell corrosion is mainly to be caused by the reasons such as difference that exist between the unevenness of steel pipe metallographic structure, the unevenness of soil microstructure and steel pipe seam and coffin.These reasons are difficult to thoroughly eliminate, but because these micro cells are random uniform in macroscopic view, etch state is uniform corrosion.Macro cell corrosion comprises the galvanic corrosion causing due to the difference of soil degree and soil constitution difference.Long-distance transport pipes often will be by the soil of different oxygen level, the soil of the soil of different salt content, different temperatures.Cause horizontal oxygen-concentration cell corrosion, salt concentration cell corrosion, thermogalvanic corrosion.When caliber is larger, on caliber circumference, also may form oxygen concentration corrosion cell.The anode of macro cell corrosion is relatively fixing and concentrate, and causes strong local corrosion, is the main cause that conduit wiring piercing is revealed, very harmful to pipeline.Microbiological corrosion refers to the galvanic corrosion that the bacterium of some kind in soil is participated in or promotes, causes that the bacterium of buried pipeline corrosion is mainly sulphate reducing bacteria (SRB).SRB obtains energy by the reduction to sulfate radical and survives.SRB can be sulfuretted hydrogen by the sulfate conversion in soil, and sulfuretted hydrogen consumes on the one hand steel pipe tubing and generates iron protosulfide, makes on the other hand the pH in soil raise.
utility model content:
The purpose of this utility model is that the problem for above-mentioned existence provides a kind of natural gas line on-line corrosion monitoring device, can carry out online corrosion accurately to natural gas line and detect, and plays the effect of presentiment and preventing.
Above-mentioned object realizes by following technical scheme:
Natural gas line on-line corrosion monitoring device, comprise the detection pipeline being connected in parallel on natural gas line, the inflow point of described monitoring pipeline and exit be mounted valve respectively, and described detection pipeline middle part connects stifle by flange, described stifle the inside installing electrodes array corrosion sensor.
Described natural gas line on-line corrosion monitoring device, described monitoring pipeline forms by being welded on two sections of straight tubes on described natural gas line, the bend pipe being connected with described straight tube respectively and the monitoring straight tube being connected between bend pipe.
Beneficial effect:
The utility model adopts the corrosion condition of electrod-array corrosion sensor Real-Time Monitoring natural gas line, particularly can monitor the situation that local corrosion occurs, monitor convenient and reliable, and the utility model is provided with valve at the two ends of detecting pipeline, at needs, lay, only need to, by the valve closing of both sides, avoid pressure piping to monitor inconvenient problem in detaching equipment.
accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model.
In figure: 1, natural gas line, 2, valve, 3, flange, 4, stifle, 5, electrod-array corrosion sensor, 6, straight tube, 7, bend pipe, 8, monitoring straight tube.
embodiment:
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model.Should understand following embodiment and only for the utility model is described, be not used in restriction scope of the present utility model.
Embodiment 1:
As shown in Figure 1: natural gas line on-line corrosion monitoring device of the present utility model, comprise the detection pipeline being connected in parallel on natural gas line 1, the inflow point of described monitoring pipeline and exit be mounted valve 2 respectively, described detection pipeline middle part connects stifle 4 by flange 3, described stifle the inside installing electrodes array corrosion sensor 5.
Embodiment 2:
Natural gas line on-line corrosion monitoring device described in embodiment 1, described monitoring pipeline forms by being welded on two sections of straight tubes 6 on described natural gas line, the bend pipe 7 being connected with described straight tube respectively and the monitoring straight tube 8 being connected between bend pipe.Described valve is arranged on respectively on described straight tube, and described stifle and described electrod-array corrosion sensor are arranged on described monitoring intuitively.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned technological means, also comprises by above technical characterictic and is equal to the technical scheme that replacement forms.Unaccomplished matter of the present utility model, belongs to those skilled in the art's common practise.
Claims (2)
1. a natural gas line on-line corrosion monitoring device, comprise the detection pipeline being connected in parallel on natural gas line, it is characterized in that: the inflow point of described monitoring pipeline and exit be mounted valve respectively, described detection pipeline middle part connects stifle by flange, described stifle the inside installing electrodes array corrosion sensor.
2. natural gas line on-line corrosion monitoring device according to claim 1, is characterized in that: described monitoring pipeline forms by being welded on two sections of straight tubes on described natural gas line, the bend pipe being connected with described straight tube respectively and the monitoring straight tube being connected between bend pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546906.4U CN203519468U (en) | 2013-09-04 | 2013-09-04 | On-line corrosion monitoring device for natural gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546906.4U CN203519468U (en) | 2013-09-04 | 2013-09-04 | On-line corrosion monitoring device for natural gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519468U true CN203519468U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320546906.4U Expired - Fee Related CN203519468U (en) | 2013-09-04 | 2013-09-04 | On-line corrosion monitoring device for natural gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203519468U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439247A (en) * | 2013-09-04 | 2013-12-11 | 南京佳业检测工程有限公司 | Online corrosion monitoring device for natural gas pipeline |
| CN107449730A (en) * | 2017-08-28 | 2017-12-08 | 天津大学 | 90 ° of elbow metal erosion electrochemical testing devices in a kind of Flow Corrosion medium |
-
2013
- 2013-09-04 CN CN201320546906.4U patent/CN203519468U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439247A (en) * | 2013-09-04 | 2013-12-11 | 南京佳业检测工程有限公司 | Online corrosion monitoring device for natural gas pipeline |
| CN107449730A (en) * | 2017-08-28 | 2017-12-08 | 天津大学 | 90 ° of elbow metal erosion electrochemical testing devices in a kind of Flow Corrosion medium |
| CN107449730B (en) * | 2017-08-28 | 2023-08-25 | 天津大学 | Electrochemical testing device for corrosion of 90-degree elbow metal in flowing corrosive medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20190904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |