CN111998234A - Automatic control system for corrosion prevention in land oil and gas pipeline - Google Patents
Automatic control system for corrosion prevention in land oil and gas pipeline Download PDFInfo
- Publication number
- CN111998234A CN111998234A CN202010736633.4A CN202010736633A CN111998234A CN 111998234 A CN111998234 A CN 111998234A CN 202010736633 A CN202010736633 A CN 202010736633A CN 111998234 A CN111998234 A CN 111998234A
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- Prior art keywords
- pipeline
- wave
- corrosion
- control system
- automatic control
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Classifications
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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
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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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
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
Abstract
The invention discloses an automatic control system for corrosion prevention in a land oil and gas pipeline, which comprises a pipeline for conveying oil and gas and a control center for processing signals, wherein a waveguide tube is arranged in the pipeline and connected with an electromagnetic wave receiving and transmitting device; the invention has the beneficial effects that: the full-time monitoring of the corrosion of the inner wall of the oil-gas pipeline can be realized through the internal installation of the waveguide tube and the real-time monitoring of the control center; the corrosion of the waveguide tube is synchronous with the corrosion of the inner wall of the pipeline, the corrosion condition of the inner wall of the oil-gas pipeline can be obtained by stopping the corrosion of the waveguide tube, the position where the corrosion occurs is accurately positioned according to the serial number of the electromagnetic wave receiving and transmitting device, and then the pipeline is repaired or replaced before the corrosion leakage does not occur, so that the potential safety hazard and the environmental pollution caused by the leakage of the pipeline are avoided.
Description
Technical Field
The invention relates to the field of pipeline transportation, in particular to an automatic control system for corrosion prevention in a land oil and gas pipeline.
Background
Pipeline transportation is a transportation mode for transporting liquid and gas materials for a long distance by using pipelines as transportation tools, and has the advantages of large transportation volume, small occupied area, short construction period, low cost and the like.
The oil gas pipeline is used as one of transportation pipelines and mainly transports petroleum, natural gas, finished oil and the like; the corrosion leakage of the oil and gas pipeline can greatly affect the safe production and the environmental protection, and the main reasons of the corrosion leakage are chemical corrosion and electrochemical corrosion; aiming at corrosion leakage, the prior art mainly comprises an internal detection method and an external detection method, wherein the external detection is to perform real-time monitoring on the outer wall of a pipeline by adopting a cathode voltage detection method, and the external detection is easily interfered by a high-voltage line and soil stray current due to the fact that the pipeline is buried underground, so that the detection on the corrosion leakage of the pipeline is inaccurate; the internal detection mainly adopts regular cleaning, namely a ball passing measure once a year or two years, and adopts a ball car to clean the pipeline while detecting the pipe wall.
Disclosure of Invention
The invention provides an automatic control system for corrosion prevention in a land oil and gas pipeline aiming at the situation in the background technology, which can effectively solve the situation in the background technology.
In order to solve the technical problem, the invention is solved by the following technical scheme: the automatic control system for corrosion prevention in the land oil and gas pipeline comprises a pipeline for transporting oil and gas and a control center for processing signals, wherein a waveguide tube is installed in the pipeline and connected with an electromagnetic wave receiving and transmitting device, the electromagnetic wave receiving and transmitting device is electrically connected with the control center, the electromagnetic wave receiving and transmitting device is normal in a normal state, electromagnetic waves in the waveguide tube are conducted, when the thickness of the tube wall is corroded to a set value, the electromagnetic wave receiving and transmitting device is abnormal, the electromagnetic waves in the waveguide tube are cut off, and meanwhile the control center sends out an alarm.
Preferably, the electromagnetic wave transceiver includes a wave generator and a wave receiver, the wave generator and the wave receiver are respectively installed at two ends of the pipeline, the wave generator is connected with one end of the waveguide tube, and the wave receiver is connected with the other end of the waveguide tube.
Preferably, a converter is further installed between the electromagnetic wave transceiver and the control center, and the converter can convert wave signals of the wave generator and the wave receiver into electrical signals and send the electrical signals to the control center.
Preferably, the converter is electrically connected with the control center, and the control center monitors the electric signals transmitted by the converter in real time.
Preferably, the wall thickness of the waveguide is calculated from the corrosion rate of the pipe.
Preferably, the material of the waveguide is the same as that of the pipe.
Preferably, the waveguide is circular in cross-section.
Preferably, the waveguide is rectangular in cross-section.
Preferably, the waveguide is fan-shaped in cross section.
The invention has the beneficial effects that: the full-time monitoring of corrosion prevention in the oil and gas pipeline can be realized through the internal installation of the waveguide tube and the real-time monitoring of the control center; the corrosion of the waveguide tube is synchronous with the corrosion of the inner wall of the pipeline, the corrosion condition of the oil-gas pipeline can be obtained by stopping the corrosion of the waveguide tube, the position where the corrosion occurs is accurately positioned according to the serial number of the electromagnetic wave receiving and transmitting device, and then the pipeline is repaired or replaced before the corrosion leakage does not occur, so that the safety influence and the environmental pollution caused by the leakage of the pipeline are avoided.
Drawings
FIG. 1 is a schematic view of the piping structure of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a functional diagram of the present invention.
In the figure: the pipeline 1, the waveguide 2, the wave generator 301, the wave receiver 302, the converter 4 and the control center 5.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood 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 described herein without the need for inventive work, are within the scope of the present invention.
As shown in fig. 1-3, the automatic control system for corrosion prevention in onshore oil and gas pipelines comprises a plurality of oil and gas pipelines 1 and a control center 5 for processing signals, a waveguide tube 2 is arranged in the pipeline 1, the waveguide tube 2 is connected with an electromagnetic wave receiving and transmitting device, the electromagnetic wave transceiver is electrically connected with the control center 5, the material of the waveguide tube 2 is the same as that of the pipeline 1, the wall thickness of the waveguide tube 2 can be calculated by the corrosion rate of the pipeline 1, when the electromagnetic wave receiving and transmitting device is normal in a normal state, the electromagnetic waves in the waveguide tube 2 are conducted, when the pipe wall is corroded to the corrosion limit, because the material of the waveguide tube 2 is the same as that of the pipeline 1, namely, the waveguide tube 2 is corroded through at this time, and if the electromagnetic wave transmitting and receiving device is abnormal, the electromagnetic wave in the waveguide tube 2 is cut off, and then the control center 5 gives an alarm.
The specific working process is as follows: the long-distance oil gas pipeline is formed by fixedly connecting a plurality of sections of oil gas pipelines, a waveguide tube with the same length is installed in each section of oil gas pipeline, when the waveguide tube is installed, the wall thickness of the waveguide tube can be calculated according to the material of the oil gas pipeline and the corrosion rate of the oil gas pipeline, and then the wall of the oil gas pipeline is guaranteed to be in a critical corrosion state when the waveguide tube is corroded to penetrate.
During normal state, wave signal is sent out from oil gas pipeline internal waveguide pipe one end to the wave generator, wave signal is received by wave receiver through the other end of waveguide pipe transmission to the waveguide pipe, when wave signal was sent out to the wave generator, the converter also received wave signal and converted wave signal into the signal of telecommunication and sent to control center, control center learns that wave generator's operating condition is normal through the signal of telecommunication, wave receiver received while wave signal was received to the wave receiver converter is converted the signal of telecommunication into with wave receiver, and send to control center, control center learns wave receiver's normal operating according to the signal of telecommunication received, and then learns that this gas pipeline that economizes on fuel is in normal condition.
When the waveguide tube is corroded and penetrated, the wave generator sends out a wave signal into the waveguide tube, the wave signal is blocked by inflowing petroleum when being transmitted in the waveguide tube, namely the wave receiver does not receive the wave signal, the wave receiver cannot send the wave signal to the converter, the converter cannot send an electric signal to the control center, the control center sends out a leakage alarm at the moment, the position of a corroded perforation is accurately positioned according to the number of the wave receiver which does not receive the wave signal, only maintenance personnel need to be dispatched to reach the specified position to inspect and maintain the oil-saving gas pipeline, and only a new waveguide tube needs to be installed again after the oil-gas pipeline is maintained; compared with the prior art, the corrosion detection device has the advantages that the corrosion detection difficulty is greatly reduced through accurate positioning, the internal monitoring is not interfered by the external environment, the detection precision is higher, the internal monitoring belongs to full-time monitoring, the internal monitoring is repaired before leakage does not occur, and the safety influence and the environmental pollution caused by oil gas leakage are avoided.
Claims (9)
1. Anticorrosive automatic control system in land oil gas pipeline, its characterized in that: pipeline (1) and the control center (5) of processing signal including a plurality of sections transportation oil and natural gas, install wave guide (2) in pipeline (1), wave guide (2) are connected with electromagnetic wave transceiver, electromagnetic wave transceiver with control center (5) electricity is connected, during normal condition, electromagnetic wave transceiver is normal, electromagnetic wave switches on in wave guide (2), when the pipe wall corrodes when setting for thickness, electromagnetic wave transceiver is unusual, electromagnetic wave ends in wave guide (2), simultaneously control center (5) send the warning.
2. The automatic control system for corrosion prevention in land oil and gas pipelines according to claim 1, characterized in that: the electromagnetic wave transceiving device comprises a wave generator (301) and a wave receiver (302), wherein the wave generator (301) and the wave receiver (302) are respectively installed at two ends of the pipeline (1), the wave generator (301) is connected with one end of the waveguide tube (2), and the wave receiver (302) is connected with the other end of the waveguide tube (2).
3. The automatic control system for corrosion prevention in land oil and gas pipelines according to claim 2, wherein: a converter (4) is further installed between the electromagnetic wave transceiving device and the control center (5), and the converter (4) can convert wave signals of the wave generator (301) and the wave receiver (302) into electric signals.
4. The automatic control system for corrosion prevention in land oil and gas pipelines according to claim 3, wherein: the converter (4) is electrically connected with the control center (5), and the control center (5) monitors the electric signals transmitted by the converter (4) in real time.
5. The automatic control system for corrosion prevention in land oil and gas pipelines according to claim 1, characterized in that: the wall thickness of the waveguide (2) can be calculated from the corrosion rate of the pipe (1).
6. The automatic control system for corrosion prevention in land oil and gas pipelines according to claim 1, characterized in that: the waveguide tube (2) is made of the same material as the pipeline (1).
7. The automatic control system for corrosion prevention in land oil and gas pipelines according to claim 1, characterized in that: the section of the waveguide tube (2) is circular.
8. The automatic control system for corrosion prevention in land oil and gas pipelines according to claim 1, characterized in that: the section of the waveguide tube (2) is rectangular.
9. The automatic control system for corrosion prevention in land oil and gas pipelines according to claim 1, characterized in that: the section of the waveguide tube (2) is fan-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010736633.4A CN111998234A (en) | 2020-07-28 | 2020-07-28 | Automatic control system for corrosion prevention in land oil and gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010736633.4A CN111998234A (en) | 2020-07-28 | 2020-07-28 | Automatic control system for corrosion prevention in land oil and gas pipeline |
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| Publication Number | Publication Date |
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| CN111998234A true CN111998234A (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010736633.4A Pending CN111998234A (en) | 2020-07-28 | 2020-07-28 | Automatic control system for corrosion prevention in land oil and gas pipeline |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5473256A (en) * | 1994-09-07 | 1995-12-05 | Texaco Inc. | Combination microwave waveguide and pressure barrier |
| CN1141673A (en) * | 1994-12-16 | 1997-01-29 | 东京瓦斯株式会社 | Electromagnetic inspection of elements of piping |
| US6114857A (en) * | 1999-03-08 | 2000-09-05 | Baker Hughes Incorporated | System and method for monitoring corrosion in oilfield wells and pipelines utilizing time-domain-reflectometry |
| CN1293366A (en) * | 2000-12-19 | 2001-05-02 | 石油大学(北京)机电工程学院 | Equipment and method for detecting leakage of pipeline |
| CN102588743A (en) * | 2012-03-08 | 2012-07-18 | 东北大学 | Device and method for real-time tracking and accurate positioning for internal detector in pipeline |
| CN107703159A (en) * | 2017-09-27 | 2018-02-16 | 山东省科学院激光研究所 | Inner-walls of duct detecting system and method |
| US20180259111A1 (en) * | 2017-03-13 | 2018-09-13 | Itp Sa | Segment of pipe-in-pipe pipeline and the use of an acoustic transducer measurement system for the reduced pressure annulus |
| CN108603855A (en) * | 2016-01-28 | 2018-09-28 | 腐蚀检测有限公司 | Corrosion detection system |
-
2020
- 2020-07-28 CN CN202010736633.4A patent/CN111998234A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5473256A (en) * | 1994-09-07 | 1995-12-05 | Texaco Inc. | Combination microwave waveguide and pressure barrier |
| CN1141673A (en) * | 1994-12-16 | 1997-01-29 | 东京瓦斯株式会社 | Electromagnetic inspection of elements of piping |
| US6114857A (en) * | 1999-03-08 | 2000-09-05 | Baker Hughes Incorporated | System and method for monitoring corrosion in oilfield wells and pipelines utilizing time-domain-reflectometry |
| CN1293366A (en) * | 2000-12-19 | 2001-05-02 | 石油大学(北京)机电工程学院 | Equipment and method for detecting leakage of pipeline |
| CN102588743A (en) * | 2012-03-08 | 2012-07-18 | 东北大学 | Device and method for real-time tracking and accurate positioning for internal detector in pipeline |
| CN108603855A (en) * | 2016-01-28 | 2018-09-28 | 腐蚀检测有限公司 | Corrosion detection system |
| US20180259111A1 (en) * | 2017-03-13 | 2018-09-13 | Itp Sa | Segment of pipe-in-pipe pipeline and the use of an acoustic transducer measurement system for the reduced pressure annulus |
| CN107703159A (en) * | 2017-09-27 | 2018-02-16 | 山东省科学院激光研究所 | Inner-walls of duct detecting system and method |
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Application publication date: 20201127 |
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