CN103727395B - A kind of simulation system of carrying out analog detection that pipeline internal medium is leaked - Google Patents
A kind of simulation system of carrying out analog detection that pipeline internal medium is leaked Download PDFInfo
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- CN103727395B CN103727395B CN201310711592.3A CN201310711592A CN103727395B CN 103727395 B CN103727395 B CN 103727395B CN 201310711592 A CN201310711592 A CN 201310711592A CN 103727395 B CN103727395 B CN 103727395B
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Abstract
The present invention relates to a kind of simulation system of carrying out analog detection that pipeline internal medium is leaked, this simulation system includes simulation leakage device, analog detection line unit and electrooptical device, described simulation leakage device is provided with total guiding tube and point guiding tube, the two ends of total guiding tube are jointing well and a point guiding tube respectively, and four pieces point guiding tubes are positioned at underground end as top, bottom and two side positions of simulating leak point and lay respectively at pipeline; Analog detection line unit includes detecting optical cable and fiber cable laying frame, is provided with flexible optical cable and communications optical cable in this detecting optical cable, and fiber cable laying frame is set in parallel in by the simulation leak point of pipeline, and detecting optical cable is around spreading on described fiber cable laying frame; The exit of detecting optical cable is connected on electrooptical device, and this electrooptical device is the DTS thermometric main frame being arranged in field experiment control room. Simulation system of the present invention can detect the leakage position of oil pipe, natural gas tube and water pipe exactly, has advantages of that monitoring accuracy is high, fast response time.
Description
Technical field
The present invention relates to photoelectric communication, specially refer to a kind of simulation system of carrying out analog detection of revealing for pipeline internal medium.
Background technology
Present stage, under conduit running state, mainly application of negative pressure wave method carries out leakage monitoring, and its monitoring principle is in the time that pipeline occurs to leak, and leak produces the localized liquid minimizing causing because of flowing material loss and occurs that instantaneous pressure reduces and speed difference. The pressure drop that this is instantaneous, acts on fluid media (medium), as decompression wave source, propagates to the upstream and downstream of leakage point by pipeline and fluid media (medium). When the pressure using before leaking is when with reference to standard, the decompression wave producing when leakage is just called suction wave, and this method is called suction wave detection method. A pressure transmitter is installed pipeline head and end is each, just can calculates the position of leak source according to the pressure-wave propagation speed in time difference and the pipe of upstream and downstream of leaking the suction wave producing and propagate into. Negative pressure wave method has higher response speed and positioning precision, but is subject to the impact of pipeline performance operating mode. In the pipeline of or pressure less (0.2～0.3MPa) large in pressure oscillation; because the suction wave producing is very little; after being delivered to detector, energy is very low; often can being submerged and differentiating unclearly, is to be difficult to detect leakage so generally adopt negative pressure wave method for the little leakage occurring in crude oil pipeline. And, claim according to personnel in pipe network, negative pressure wave method be positioned at kilometer level, increased greatly the difficulty of leaking precision point investigation and processing. Therefore urgently need a kind of monitoring accuracy high in pipe network, the monitoring means of accurate positioning.
Application distribution Fiber Optic Pyrometer carries out leakage monitoring and has its natural advantage, one, long defeated pipe network has it with linking up the optical cable laying, and the sensor of this system is common optical cable, uses this system to carry out leakage monitoring and can save a large amount of installation of sensors work. Its two, no matter be oil pipe, water pipe, natural gas tube or steam pipe, occur leak time, all can there is the variation of certain rule in the temperature field of pipeline, and can judge the situation of leakage to the monitoring of these variations, i.e. the highly versatile of this system. Its three, optical fiber has its distinctive security advantages, tool does not repeat; Four, the monitoring distance of monitoring system is long, and linear, meets pipeline self character.
Summary of the invention
The object of the invention is to the difficult problem that distributed optical fiber temperature measurement technology is existed when the pipeline temperature measuring application, a kind of simulation system of pipeline thermometric test use is provided. Simulation system of the present invention is wanted to provide test result accurately in pipeline leak detection, and the application of revealing in measuring at pipeline for distributed optical fiber temperature measurement technology provides test data.
In order to reach foregoing invention object, patent of the present invention provides technical scheme as follows:
A kind of simulation system of carrying out analog detection that pipeline internal medium is leaked, being embedded in underground described pipeline medium is oil or natural gas, be provided with joint well at the connecting portion of pipeline, it is characterized in that, this simulation system includes simulation leakage device, analog detection line unit and electrooptical device, described simulation leakage device is provided with a total guiding tube and four pieces points of guiding tubes, the two ends of total guiding tube are jointing well and point guiding tube respectively, four pieces points of guiding tubes are positioned at underground end and lay respectively at as simulation leak point the top of pipeline, bottom and two side positions, described analog detection line unit includes detecting optical cable and fiber cable laying frame, in this detecting optical cable, be provided with parallel fixing flexible optical cable and communications optical cable, described fiber cable laying frame is set in parallel in by the simulation leak point of described pipeline, and detecting optical cable is around spreading on described fiber cable laying frame, the exit of described detecting optical cable is connected on electrooptical device, and this electrooptical device is the DTS thermometric main frame being arranged in field experiment control room.
The present invention is leaked and is carried out in the simulation system of analog detection pipeline internal medium, one end of described total guiding tube is the lower joint well connecting on described pipeline in depth, the other end of total guiding tube stretches out in ground, a described point guiding tube is divided into ground epimere and underground section, described total guiding tube connects respectively the ground epimere of four pieces points of guiding tubes by a cross valve, ground epimere at every point of guiding tube is equipped with an independent switch valve, it is underground and along described pipe arrangement that the underground section of four pieces points of guiding tubes is embedded in, in four pieces points of guiding tube underground sections one be positioned at pipeline under, one be positioned at pipeline directly over, other two horizontal both sides that are positioned at pipeline.
The present invention is leaked and is carried out in the simulation system of analog detection pipeline internal medium, and described total guiding tube is arranged on joint well medium interface together with pressure gauge, is positioned on total guiding tube on ground and is also provided with flowmeter.
The present invention is leaked and is carried out in the simulation system of analog detection pipeline internal medium, described fiber cable laying frame is three-decker, every layer is provided with three road parallel bars, passes through per pass parallel bar to be provided with nine sections of parallel detecting optical cables in simulation position, leak point around the detecting optical cable spreading on described fiber cable laying frame.
The present invention is leaked and is carried out in the simulation system of analog detection pipeline internal medium, flexible optical cable in described detecting optical cable and communications optical cable are connected to DTS thermometric main frame by fiber cable joint respectively, flexible optical cable in described detecting optical cable and communications optical cable have same laying mode and same installation position, the test result of described flexible optical cable is reference value, and the test result of described communications optical cable is experiment value.
Based on technique scheme, simulation system of the present invention has obtained following technique effect in the time that simulated test is carried out in leakage to pipeline internal medium:
1. simulation system of the present invention can detect the leakage position of oil pipe, natural gas tube and water pipe exactly, has advantages of that monitoring accuracy is high, fast response time.
2. simulation system of the present invention, by calculating leakage rate in pipeline to the further analysis of data gathering or reveal the size of bore, provides reference with the maintenance to pipeline.
Brief description of the drawings
Fig. 1 is that the structural representation of simulating leakage device in the simulation system of carrying out analog detection is leaked in the present invention to pipeline internal medium.
Fig. 2 is the structural representation of simulating fiber cable laying frame in detection line device in simulation system of the present invention.
Fig. 3 is the position relationship schematic diagram of simulating detection line device and pipeline in simulation system of the present invention.
Detailed description of the invention
We leak the simulation system of carrying out analog detection to the present invention to pipeline internal medium with specific embodiment by reference to the accompanying drawings and do further and elaborate below; in the hope of more clear its structure composition and working method, but can not limit the scope of the invention with this.
The line leakage of considering distributed optical fiber temperature measurement technology remains in some problems to be solved, so the present invention carries out simulated test to carry out further investigation to it, with its commercialization early.
The present invention is specifically leaked the simulation system of carrying out analog detection to pipeline internal medium, and this simulation system includes simulation leakage device, analog detection line unit and electrooptical device. Simulation leakage device is in pipeline, to simulate the situation that pipeline internal medium is revealed, and knows definitely place and leakage mode that medium is revealed. Analog detection line unit is that simulation optical cable is arranged in to position, pipeline leak point by certain mode, and provides foundation for the contrast of result of the test. Electrooptical device is to utilize existing DTS equipment, to the computation and measurement result respectively of the optical cable of two types in simulation optical cable, and measurement result is contrasted.
In simulated test, described pipeline is embedded in below ground, and ducted medium is oil or natural gas, uses two media when simulated test, and one is water, another kind of compressed air. Be provided with joint well at the connecting portion of pipeline, be all provided with joint well in actual pipeline, its effect is to reducing pressure in pipeline or pressurizeing by joint well.
As shown in Figure 1, above-mentioned simulation leakage device is provided with a total guiding tube 4 and four pieces points of guiding tubes 5, the two ends of total guiding tube 4 respectively jointing well 2 and point 5, four pieces point guiding tubes 5 of guiding tube are positioned at underground end as top, bottom and two side positions of simulating leak point and lay respectively at pipeline. Specifically, the joint well 2 in connecting pipe 1 is in depth descended in one end of total guiding tube 4, on the pipeline 1 of joint well 2 positions, is provided with valve 3, and this total guiding tube 4 is just connected on valve 3, and the other end of total guiding tube 4 stretches out in ground 9. A described point guiding tube 5 is divided into ground epimere and underground section, described total guiding tube 4 connects respectively the ground epimere of four pieces points of guiding tubes 5 by a cross valve, ground epimere at every point of guiding tube 5 is equipped with an independent switch valve, the underground section of four pieces points of guiding tubes is embedded in underground and arranges along described pipeline 1, in four pieces points of guiding tube 5 underground sections one be positioned at pipeline 1 under, one be positioned at pipeline 1 directly over, other two horizontal both sides that are positioned at pipeline 1. Described total guiding tube 4 is also arranged on joint well 2 medium interfaces together with a pressure gauge, and is positioned on total guiding tube 4 on ground and is also provided with a flowmeter.
Above-mentioned analog detection line unit includes detecting optical cable 7 and fiber cable laying frame 6, in this detecting optical cable 7, be provided with parallel fixing flexible optical cable and communications optical cable, described fiber cable laying frame 6 is set in parallel in by the simulation leak point of described pipeline 1, and detecting optical cable 7 is around spreading on described fiber cable laying frame 6. Specifically, described fiber cable laying frame 6 is three-decker, and every layer is provided with three road parallel bars, around the detecting optical cable 7 process per pass parallel bars that spread on described fiber cable laying frame 6, to be provided with nine sections of parallel detecting optical cables 7 in simulation position, leak point.
The exit of above-mentioned detecting optical cable 7 is connected on electrooptical device, and this electrooptical device is the DTS thermometric main frame being arranged in field experiment control room. Flexible optical cable in described detecting optical cable 7 and communications optical cable are connected to same DTS thermometric main frame by fiber cable joint respectively, flexible optical cable in described detecting optical cable 7 and communications optical cable have same laying mode and same installation position, the test result of described flexible optical cable is reference value, and the test result of described communications optical cable is experiment value.
In pipeline internal leakage simulated experiment, by using total guide wire and a point guiding tube from the joint Jing Chu of pipeline, medium to be drawn, guided to definite leakage point place and carried out simulated leakage. In simulated experiment, total guide wire and a point guide wire are all that to select internal diameter be the high pressure resistant rubber tube of 8mm. At joint, Jing Jiezhijiekouchu is equipped with pressure gauge, be used for measuring in real time institute by the pressure of medium, latter linked total guide wire by medium by directing into outside well in joint well, after a point guide wire place connects a cross valve, enter ground, always the length of guide wire is 2.1m. The break-make that switch is independently used for controlling each point of guide wire is housed before each point of guide wire, and point guide wire attaches ground and installs, and simulated leakage point is 3m apart from joint well horizontal range, every to divide guide wire length be 3m.
In the time of the fiber cable laying frame of the metal material of making, its longitudinal length is 10m, and width is 60cm, is highly 168mm. By two kinds of detecting optical cables (flexible optical cable, communications optical cable) respectively around applying on fiber cable laying frame, after having laid as shown in Figures 2 and 3, optical cable is divided into three layers, each interfloor distance is 8.4cm, every one deck is all laid with three vertical optical cables, and often vertical optical cable is respectively 30cm, 60cm, 90cm apart from pipeline distance. After having laid, fiber cable joint is connected to DTS main frame in field experiment control room.
Simulation system of the present invention can detect the leakage position of oil pipe, natural gas tube and water pipe exactly, has advantages of that monitoring accuracy is high, fast response time. And by calculating leakage rate in pipeline to the further analysis of data gathering or reveal the size of bore, and then provide reference to the maintenance work of pipeline.
Claims (5)
1. one kind leaks the simulation system of carrying out analog detection to pipeline internal medium, being embedded in underground described pipeline medium is oil or natural gas, be provided with joint well at the connecting portion of pipeline, it is characterized in that, this simulation system includes simulation leakage device, analog detection line unit and electrooptical device, described simulation leakage device is provided with a total guiding tube and four pieces points of guiding tubes, the two ends of total guiding tube are jointing well and point guiding tube respectively, four pieces points of guiding tubes are positioned at underground end and lay respectively at as simulation leak point the top of pipeline, bottom and two side positions, described analog detection line unit includes detecting optical cable and fiber cable laying frame, in this detecting optical cable, be provided with parallel fixing flexible optical cable and communications optical cable, described fiber cable laying frame is set in parallel in by the simulation leak point of described pipeline, and detecting optical cable is around spreading on described fiber cable laying frame, the exit of described detecting optical cable is connected on electrooptical device, and this electrooptical device is the DTS thermometric main frame being arranged in field experiment control room.
2. a kind of simulation system of carrying out analog detection that pipeline internal medium is leaked according to claim 1, it is characterized in that, one end of described total guiding tube is the lower joint well connecting on described pipeline in depth, the other end of total guiding tube stretches out in ground, a described point guiding tube is divided into ground epimere and underground section, described total guiding tube connects respectively the ground epimere of four pieces points of guiding tubes by a cross valve, ground epimere at every point of guiding tube is equipped with an independent switch valve, it is underground and along described pipe arrangement that the underground section of four pieces points of guiding tubes is embedded in, in four pieces points of guiding tube underground sections one be positioned at pipeline under, one be positioned at pipeline directly over, other two horizontal both sides that are positioned at pipeline.
3. a kind of simulation system of carrying out analog detection that pipeline internal medium is leaked according to claim 2, it is characterized in that, described total guiding tube is arranged on joint well medium interface together with pressure gauge, is positioned on total guiding tube on ground and is also provided with flowmeter.
4. a kind of simulation system of carrying out analog detection that pipeline internal medium is leaked according to claim 1, it is characterized in that, described fiber cable laying frame is three-decker, every layer is provided with three road parallel bars, passes through per pass parallel bar to be provided with nine sections of parallel detecting optical cables in simulation position, leak point around the detecting optical cable spreading on described fiber cable laying frame.
5. a kind of simulation system of carrying out analog detection that pipeline internal medium is leaked according to claim 1, it is characterized in that, flexible optical cable in described detecting optical cable and communications optical cable are connected to DTS thermometric main frame by fiber cable joint respectively, flexible optical cable in described detecting optical cable and communications optical cable have same laying mode and same installation position, the test result of described flexible optical cable is reference value, and the test result of described communications optical cable is experiment value.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105805556B (en) * | 2015-09-30 | 2018-02-27 | 李儒峰 | A kind of distribution type fiber-optic leakage monitoring system |
| CN105788429B (en) * | 2016-05-12 | 2019-05-10 | 清华大学合肥公共安全研究院 | A kind of simulator and its method of the leakage generation of simulation water supply network |
| CN106128262B (en) * | 2016-06-08 | 2019-01-22 | 重庆科技学院 | A kind of oil-gas pipeline defects detection and monitoring experiment porch |
| CN110886971A (en) * | 2019-11-29 | 2020-03-17 | 南通仁隆科研仪器有限公司 | Pipeline leakage multi-source detection experiment platform |
| CN113803649B (en) * | 2021-08-30 | 2023-04-07 | 华能南京新港综合能源有限责任公司 | Long distance steam pipeline buried pipe leakage monitoring system |
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Address after: Room 103, Building 299, Zhongchen Road, Songjiang District, Shanghai, 20113 Patentee after: Shanghai Bohui Technology Co., Ltd. Address before: 201203 Shanghai Pudong New Area Zhangjiang hi tech park, 2 B, 177 Po Bo Road. Patentee before: Shanghai Bandweaver Technology Co., Ltd. |