CN105221936B - A kind of device and its control method of monitoring and positioning directly buried heat distribution pipeline road leakage point - Google Patents
A kind of device and its control method of monitoring and positioning directly buried heat distribution pipeline road leakage point Download PDFInfo
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- CN105221936B CN105221936B CN201510705374.8A CN201510705374A CN105221936B CN 105221936 B CN105221936 B CN 105221936B CN 201510705374 A CN201510705374 A CN 201510705374A CN 105221936 B CN105221936 B CN 105221936B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 11
- 239000000835 fiber Substances 0.000 claims abstract description 83
- 238000009413 insulation Methods 0.000 claims abstract description 53
- 239000013307 optical fiber Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- 239000005439 thermosphere Substances 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 9
- 238000001069 Raman spectroscopy Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- UPLPHRJJTCUQAY-WIRWPRASSA-N 2,3-thioepoxy madol Chemical compound C([C@@H]1CC2)[C@@H]3S[C@@H]3C[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@](C)(O)[C@@]2(C)CC1 UPLPHRJJTCUQAY-WIRWPRASSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Present invention is disclosed the devices of a kind of monitoring and positioning directly buried heat distribution pipeline road leakage point, heat distribution pipeline is externally provided with heat insulation layer, the device is equipped with computer, and the computer connects sensor fibre by fiber sensing module, and the sensor fibre extends between the heat distribution pipeline and heat insulation layer.The present invention monitors and whether the device of positioning leakage point can automatically leak in distributed monitoring directly buried heat distribution pipeline road, and may determine that leakage point cross-section of pipeline general orientation, when pipeline leaks, leakage point can be accurately positioned and send out in time alarm in the present apparatus and leak point positioning is reported.And leak point positioning speed is fast, precision is high, occur pipe leakage after, in several minutes can fault point, shorten heat distribution pipeline repair time.Moreover, the present apparatus can position multiple leakage points simultaneously, realize to directly buried heat distribution pipeline road distributed monitoring and positioning.
Description
Technical field
The present invention relates to monitoring and positioning device more particularly to a kind of automatic distributed monitorings and positioning directly buried heat distribution pipeline road
The device of leakage point.
Background technology
With the improvement of people's living standards, the Thermal facilities such as heating have become the indispensability passed the winter, and pipeline has become
Facilitating economic heating power means of transportation to be a kind of.But since pipe-line equipment aging and artificial destruction often cause heat distribution pipeline
Leakage, severely impacts heating.Therefore, carry out leakage monitoring to pipeline is very important with positioning.
Heat distribution pipeline is studied accordingly at present also fewer, when pipeline leaks, utilizes personnel to pipeline more
Along the line leakage point is found in the way of infrared detection technique, artificial observation etc..The utilization temperature sensor monitors thermal pipe of appearance
It is point type detection that road is also mostly, needs multiple detectors, detection range is inaccurate, of high cost, difficult in maintenance.
Invention content
The technical problem to be solved by the present invention is to realize that one kind can monitor whether pipeline leaks, when pipeline occurs
When leakage, can quickly and accurately determine pipe leakage point position, and may determine that leakage point cross-section of pipeline substantially
The device in orientation
To achieve the goals above, the technical solution adopted by the present invention is：A kind of monitoring and positioning directly buried heat distribution pipeline road are let out
The device of leak source, heat distribution pipeline are externally provided with heat insulation layer, which is equipped with computer, and the computer passes through fiber sensing module
Sensor fibre is connected, the sensor fibre extends between the heat distribution pipeline and heat insulation layer.
The sensor fibre is equipped at least three, and is set in qually spaced between heat distribution pipeline and heat insulation layer.
The heat insulation layer is equipped with the first sensor fibre being connect with fiber sensing module, the first sensor fibre edge
Heat insulation layer is arranged, and has spacing with heat insulation layer.
The sensor fibre extended between the heat distribution pipeline and heat insulation layer is equipped with three, respectively the second sensor fibre the
Three sensor fibres and the 4th sensor fibre, the sensor fibre section described in three are arranged in inverted equilateral triangle in heat distribution pipeline
Between heat insulation layer.
The heat insulation layer is set at interval of a distance there are one the point of release, and the point of release is located at the lower surface of heat insulation layer
Or oblique upper.
First sensor fibre is located at right over heat insulation layer, and is 8-12cm with adiabatic interlamellar spacing.
A kind of control method of monitoring and the device for positioning directly buried heat distribution pipeline road leakage point, it is characterised in that：
Step 1 starts to measure；
Temperature between step 2, acquisition heat distribution pipeline and heat insulation layer；
Step 3, by the temperature of acquisition compared with predetermined threshold value；
Step 4, the return to step 2 if being less than threshold value；Then judge to leak if more than threshold value；
Step 5 obtains fiber position point more than predetermined threshold value；
Step 6：Output leakage report.
The step 2 acquires the temperature outside heat insulation layer simultaneously；
The step 3 is simultaneously by the temperature outside the heat insulation layer of acquisition compared with predetermined threshold value；
The step 4 judges simultaneously, if the temperature outside heat insulation layer is more than predetermined threshold value, judges that heat insulation layer leaks,
If the temperature outside heat insulation layer is less than predetermined threshold value, judge that heat insulation layer does not leak.
In the step 5, heat distribution pipeline will be acquired and the temperature of heat insulation layer sensor fibre detection sorts, leakage point is located at temperature
Between preceding two sensor fibres of degree.
The present invention monitors and whether the device of positioning leakage point can automatically occur in distributed monitoring directly buried heat distribution pipeline road
Leakage, and leakage point is may determine that in the general orientation of cross-section of pipeline, when pipeline leaks, the present apparatus can be to letting out
Leak source is accurately positioned and sends out in time alarm and leak point positioning report.And leak point positioning speed is fast, precision is high, and pipeline occurs
After leakage, in several minutes can fault point, shorten heat distribution pipeline repair time.Moreover, the present apparatus can position simultaneously
Multiple leakage points are realized to directly buried heat distribution pipeline road distributed monitoring and positioning.
Description of the drawings
The content of every width attached drawing expression in description of the invention and the label in figure are briefly described below：
Fig. 1 is present apparatus structural schematic diagram；
Fig. 2 is the structure chart of cross section after present apparatus heat distribution pipeline laying optical fiber and heat insulation layer；
Fig. 3 is present apparatus control method flow chart；
Label in above-mentioned figure is：1, computer；2, fiber sensing module；3, the first sensor fibre；4, the second sensing
Optical fiber；5, third sensor fibre；6, the 4th sensor fibre；7, heat distribution pipeline；8, heat insulation layer.
Specific implementation mode
The device of 7 leakage point of monitoring and positioning directly buried heat distribution pipeline road includes computer 1, fiber sensing module 2 and sense light
Fibre, Computer 1 and sensor fibre are peripheral equipments, and fiber sensing module 2 is enclosed in a babinet.
Computer 1 is controlled fiber sensing module 2 by communication interface and worked, and read light using technical grade computer 1
The data that fine sensing module 2 exports are stored and are analyzed, and are obtained work report and are shown；Fiber sensing module 2, using based on
The distributed fiber temperature sensing module of Raman back scattering carries out distributed measurement to the temperature information along heat distribution pipeline 7.
Sensor fibre, using the SM-28e+ general single mode fibers of Corning Incorporated, for measuring the distributed temperature along heat distribution pipeline 7
Information.
Computer 1 connects 2 input terminal of fiber sensing module and transmits work order, and can be periodically sent out work and refer to
It enables, realizes that the device automatically monitors and position work, the output end of fiber sensing module 2 connects computer by communication interface
1, the data after acquisition are transferred to computer 1.Monitoring and positioning device work start when, fiber sensing module 2 is to sensing
Fibre optical transmission pulsed optical signals, and the distributed Raman back scattering optical signal of optical fiber along heat distribution pipeline 7 is received, to receiving
Optical signal carry out noise reduction, light-splitting processing obtains stokes light and anti-Stokes light, and amplified acquisition is transferred to calculating
Machine 1 stores and analysis, show that the Temperature Distribution along heat distribution pipeline 7 is believed using the optical time domain reflection technology based on Raman scattering
Breath.
As shown in Figure 1, heat distribution pipeline 7 is externally provided with heat insulation layer 8, along being equipped with sense light between heat distribution pipeline 7 and heat insulation layer 8
Fibre is preferably provided at least three sensor fibres, three spaced sets of sensor fibre in order to accurately position leak position
Between heat distribution pipeline 7 and heat insulation layer 8.However for the larger heat distribution pipeline 7 of caliber, the sense light more than three can be set
Fibre improves the accuracy of positioning.It additionally can be in 7 outer surface of heat distribution pipeline along the first sensor fibre of wire routing 3, for measuring
Environment temperature discerns whether that heat insulation layer 8, which occurs, to be leaked.First sensor fibre 3 needs have certain spacing with heat insulation layer 8,
Away from for 8-12cm, preferably 10cm, position is located at right over heat insulation layer 8, because the first sensor fibre 3 is both required to measure
The environment temperature of heat distribution pipeline 7, it is similarly desirable to increase accuracy, therefore excessive or too small spacing etc. may make measurement parameter
It at influence, therefore controls in the distance that 10cm or so is best results, the position of surface can preferably obtain external temperature
Degree situation, because most of there is interfering heat source to come from earth's surface.
Preferred embodiment：For most of heat distribution pipelines 7, three sensor fibres are set, both can be very good control at
This, also can accurately obtain leakage point position, respectively the second sensor fibre 4, third sensor fibre 5 and the 4th sensor fibre
6, as shown in Fig. 2, three sensor fibre sections are arranged in inverted equilateral triangle between heat distribution pipeline 7 and heat insulation layer 8, because
The hot water of leakage generally remains in the bottom of heat distribution pipeline 7 and 8 gap of heat insulation layer, and inverted structure can make every sensor fibre
The temperature parameter of leakage is accurately measured as far as possible.
Heat insulation layer 8 opens an osculum every a distance, as the point of release, the point of release be located at heat insulation layer 8 lower surface or
Oblique upper is preferably placed at horizontal line into 60 ° of oblique upper, and pressure crosses havoc heat insulation layer 8 when preventing heat distribution pipeline 7 from leaking,
The first sensor fibre 3 can not be impacted simultaneously.
As shown in figure 3, when positioning work starts, computer 1 sends out work order, and fiber sensing module 2 is sensed to first
Optical fiber 3, the second sensor fibre 4, third sensor fibre 5 and the 4th sensor fibre 6 emit a pulsed optical signals, and receive thermal pipe
The distributed Raman scattered light signal returned in optical fiber along road 7, then carry out noise reduction, light splitting, obtain stokes light and
Anti-Stokes light, amplified acquisition are transferred to the storage of computer 1 and analysis, anti-using the optical time domain based on Raman scattering
The technology of penetrating obtains the temperature distribution information along heat distribution pipeline 7.
When directly buried heat distribution pipeline road 7 leaks, leakage point ambient temperature increases, and is far above the temperature of non-leakage point.Root
A suitable threshold temperature is set according to 7 local environment of heat distribution pipeline, by the analysis of computer 1, if there are leakage points, if
In the presence of then sending out alarm and provide the positioning reporting of pipe leakage point.
As shown in figure 3, a kind of monitoring and positioning directly buried heat distribution pipeline road 7 based on Raman scattering optical time domain reflection technology leak
The device of point, workflow are：
Computer 1 sends out work order, and fiber sensing module 2 is started to work；
Fiber sensing module 2 emits a laser pulse and enters the first sensor fibre 3, the second sensor fibre 4, third sense light
Fibre 5 and the 4th sensor fibre 6, receive the Raman scattering optical signal returned in the optical fiber along heat distribution pipeline 7, are then dropped
It makes an uproar, be divided, obtain stokes light and anti-Stokes light, amplified acquisition is transferred to computer 1；
Computer 1 analyzes digital signal along collected heat distribution pipeline 7, when using light based on Raman scattering
Domain reflection technology principle obtains the Temperature Distribution of each point along heat distribution pipeline 7；
A suitable threshold temperature is set according to 7 local environment of heat distribution pipeline, sensor fibre is judged whether there is and detects
Temperature be more than the threshold temperature, if not having, continue gathered data, carry out next round judgement；
The temperature detected if there is sensor fibre is more than threshold temperature, then judges whether is temperature that sensor fibre detects
More than threshold temperature, if it is not, then position the point, and by the second sensor fibre 4, third sensor fibre 5 and the 4th sensor fibre 6
The temperature of detection sorts, and on cross-section of pipeline, leakage point is located at before temperature between two optical fiber, and mark heat insulation layer 8 does not have
There are leakage, computer 1 to provide leak point positioning report；
If the temperature that the first sensor fibre 3 detects is more than threshold temperature, judge that the second sensor fibre 4, third pass
Photosensitive fine 5 and the 4th sensor fibre 6 detect temperature whether have more than threshold temperature.If no, continuing gathered data, into
Row next round is analyzed.If so, then position the point, and by the second sensor fibre 4, third sensor fibre 5 and the 4th sensor fibre 6
The temperature of detection sorts, and on cross-section of pipeline, leakage point is located at before temperature between two optical fiber, and mark heat insulation layer 8 is let out
Leakage, computer 1 provide leak point positioning report.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or without changing
Other occasions are directly applied to by the design of the present invention and technical solution, within protection scope of the present invention.
Claims (6)
1. a kind of control method of the device of monitoring and positioning directly buried heat distribution pipeline road leakage point, heat distribution pipeline are externally provided with heat insulation layer,
It is characterized in that：The device of monitoring and positioning directly buried heat distribution pipeline road leakage point is equipped with computer, and the computer passes through optical fiber
Sensing module connects sensor fibre, and the sensor fibre extends between the heat distribution pipeline and heat insulation layer;
The heat insulation layer is equipped with the first sensor fibre being connect with fiber sensing module, and first sensor fibre is along adiabatic
Layer setting, and there is spacing with heat insulation layer, first sensor fibre is used to measure the environment temperature outside heat distribution pipeline, and will obtain
The ambient temperature signal taken is delivered to computer；
First sensor fibre is located at right over heat insulation layer, and is 8-12cm with adiabatic interlamellar spacing；
The control method of device based on the monitoring and positioning directly buried heat distribution pipeline road leakage point：
Step 1 starts to measure；
Temperature between step 2, acquisition heat distribution pipeline and heat insulation layer；
Step 3, by the temperature of acquisition compared with predetermined threshold value；
Step 4, the return to step 2 if being less than threshold value；Then judge to leak if more than threshold value；
Step 5 obtains fiber position point more than predetermined threshold value；
Step 6：Output leakage report.
2. control method according to claim 1, it is characterised in that：The sensor fibre is equipped at least three, and waits
Spacing is arranged between heat distribution pipeline and heat insulation layer.
3. control method according to claim 2, it is characterised in that：Extend between the heat distribution pipeline and heat insulation layer
Sensor fibre is equipped with three, respectively the second sensor fibre third sensor fibre and the 4th sensor fibre, the sensing described in three
Fiber cross-sections are arranged in inverted equilateral triangle between heat distribution pipeline and heat insulation layer.
4. control method according to claim 3, it is characterised in that：There are one the heat insulation layer is set at interval of a distance
The point of release, the point of release are located at the lower surface or oblique upper of heat insulation layer.
5. control method according to claim 1, it is characterised in that：
The step 2 acquires the temperature outside heat insulation layer simultaneously；
The step 3 is simultaneously by the temperature outside the heat insulation layer of acquisition compared with predetermined threshold value；
The step 4 judges simultaneously, if the temperature outside heat insulation layer is more than predetermined threshold value, judges that heat insulation layer leaks, if absolutely
Temperature outside thermosphere is less than predetermined threshold value, then judges that heat insulation layer does not leak.
6. control method according to claim 1 or 5, it is characterised in that：In the step 5, will acquisition heat distribution pipeline with
The temperature sequence of heat insulation layer sensor fibre detection, leakage point are located at before temperature between two sensor fibres.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510705374.8A CN105221936B (en) | 2015-10-26 | 2015-10-26 | A kind of device and its control method of monitoring and positioning directly buried heat distribution pipeline road leakage point |
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| CN201510705374.8A CN105221936B (en) | 2015-10-26 | 2015-10-26 | A kind of device and its control method of monitoring and positioning directly buried heat distribution pipeline road leakage point |
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| CN105221936A CN105221936A (en) | 2016-01-06 |
| CN105221936B true CN105221936B (en) | 2018-09-14 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559600A (en) * | 2017-09-28 | 2018-01-09 | 江苏明江机械制造有限公司 | The online leak detection system of heat distribution pipeline optical fiber |
| CN109827078B (en) * | 2017-11-23 | 2020-08-18 | 中国石油化工股份有限公司 | Oil pipeline defect inspection method based on distributed optical fiber temperature measurement |
| CN111306450B (en) * | 2019-12-24 | 2024-06-18 | 陕西建工安装集团有限公司 | Buried thermal pipeline water leakage detection device and method |
| CN113052220A (en) * | 2021-03-16 | 2021-06-29 | 洛阳城市建设勘察设计院有限公司郑州工程分公司 | Sealing performance strength detection system, terminal and medium for direct-buried heat supply pipeline research |
| CN113944890A (en) * | 2021-10-22 | 2022-01-18 | 中国计量大学 | Pipeline detection method, equipment, device, use method and storage medium |
| CN116066764A (en) * | 2023-02-22 | 2023-05-05 | 河北君业科技股份有限公司 | Leakage detection and positioning method for thermal pipeline |
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2015
- 2015-10-26 CN CN201510705374.8A patent/CN105221936B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3930530A1 (en) * | 1989-09-13 | 1991-03-21 | Veba Kraftwerke Ruhr | Leakage monitoring system for thermally-insulated pipeline - uses longitudinal monitoring wires embedded in insulation with monitoring of complex electrical resistance |
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Effective date of registration: 20230526 Address after: Room 210-1, Building 1, West Side, No. 13 Government Street, Taihu Town, Tongzhou District, Beijing, 101100 Patentee after: BEIJING XINCHENG GUOTAI ENERGY TECHNOLOGY CO.,LTD. Address before: 241000 Wuhu Road, Yijiang District, Anhui, Patentee before: ANHUI NORMAL University |
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Effective date of registration: 20231008 Address after: Room 210-1, Building 1, West Side, No. 13 Government Street, Taihu Town, Tongzhou District, Beijing, 101100 Patentee after: BEIJING XINCHENG GUOTAI ENERGY TECHNOLOGY CO.,LTD. Patentee after: BEIJING XINCHENG HEATING POWER Co.,Ltd. Address before: Room 210-1, Building 1, West Side, No. 13 Government Street, Taihu Town, Tongzhou District, Beijing, 101100 Patentee before: BEIJING XINCHENG GUOTAI ENERGY TECHNOLOGY CO.,LTD. |