CN206725156U - A kind of geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus - Google Patents
A kind of geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus Download PDFInfo
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- CN206725156U CN206725156U CN201720485546.XU CN201720485546U CN206725156U CN 206725156 U CN206725156 U CN 206725156U CN 201720485546 U CN201720485546 U CN 201720485546U CN 206725156 U CN206725156 U CN 206725156U
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- optical fiber
- temperature sensing
- connecting pipe
- sensing optical
- detection apparatus
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Abstract
The utility model discloses a kind of geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus, including control system, the input of the control system and the output end signal of distributed optical fiber temperature sensor connect, the distributed optical fiber temperature sensor is connected with temperature sensing optical fiber by FC/APC joints, optical fiber covering device is arranged with the outer wall of the temperature sensing optical fiber, the optical fiber covering device is specifically made up of desiccant layer and flexible hose, desiccant layer is provided between the temperature sensing optical fiber and flexible hose, the temperature sensing optical fiber is specially the standard multimode fiber that fibre core is 62.5/125, the desiccant layer is specifically made up of montmorillonite drier, the flexible hose is specially water penetration flexible hose, the temperature sensing optical fiber prolongs to be laid along earth source heat pump underground connecting pipe；The utility model can be effectively prevented from influence of the external environment condition to temperature sensing optical fiber, realize effective protection to temperature sensing optical fiber, improve the accuracy rate of detection.
Description
Technical field
Pipe testing apparatus technical field is the utility model is related to, specially a kind of geothermal pump well connecting pipe high accuracy
Optical fiber multiple spot leakage detection apparatus.
Background technology
At present, how real-time prediction underground heat vertical shaft connecting pipe water leaks hidden danger, judges leakage point position in time, it has also become
An earth source heat pump safety in production problem in the urgent need to address, China are mainly let out for the method for earth source heat pump water damage early warning
Leakage noise detection method, radioactive tracer leak hunting method, stress wave, NPW method, pipeline Realtime Streaming Transport, pressure differential method
Deng, most of these traditional monitoring methods be applied to caliber is larger, elbow with connect less Monitoring Pinpelines, or in pipeline
Monitoring effect to a certain extent is just played during burst big flow leakage, compared with these above-mentioned methods, optical fiber leak detecting is anti-
All there is unique superiority in combustion, explosion-proof, anticorrosive, electromagnetism interference, high pressure resistant and leakage susceptibility etc., suitable for depth
Bury the adverse circumstances of underground.
But existing optical fiber leak detecting and imperfection, seepage in underground easily cause detection means to be judged by accident, equipment leak detection is accurate
True rate is low, influences the sensitivity of equipment, because the characteristic of optical fiber itself causes easily to be broken, causes maintenance cost too high.
Therefore how to improve prior art defect, be urgent problem.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of geothermal pump well connecting pipe is high
Precision optical fiber multiple spot leakage detection apparatus, it is relatively low and pass to solve, Detection accuracy poor to temperature sensing optical fiber protective in the prior art
The low technical problem of detection method efficiency of uniting.
The utility model is achieved through the following technical solutions：
The utility model provides a kind of geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus, including control
System, the input of the control system and the output end signal of distributed optical fiber temperature sensor connect, the distributed light
Fine temperature sensor is connected with temperature sensing optical fiber by FC/APC joints, and optical fiber suit is arranged with the outer wall of the temperature sensing optical fiber
Put, the optical fiber covering device is specifically made up of desiccant layer and flexible hose.
Further, it is provided with desiccant layer between the temperature sensing optical fiber and flexible hose.
Further, the temperature sensing optical fiber is specially the standard multimode fiber that fibre core is 62.5/125.
Further, the desiccant layer is specifically made up of montmorillonite drier.
Further, the flexible hose is specially water penetration flexible hose.
Further, the temperature sensing optical fiber prolongs lays along earth source heat pump underground connecting pipe.
Further, the central tube is installed with sensor on the positive stop.
The utility model has advantages below compared with prior art：The utility model provides a kind of geothermal pump well connection
Pipeline high-precision optical fiber multiple spot leakage detection apparatus, the utility model realize effective protection to light by optical fiber covering device, when
When pipeline leaks, the leak in pipeline can enter in desiccant layer through flexible hose, and desiccant layer absorbs the same of leak
When, temperature sensing optical fiber can experience the change of ambient temperature, and temperature information is fed back into distributed optical fiber temperature sensor,
And control system is finally fed back to, due to water and surrounding soil temperature difference, control system monitors temperature field at pipe leakage
Change, so as to and alarm, leak position is judged rapidly, because desiccant layer is specifically by montmorillonite drier system
Into, and montmorillonite drier face shaping is grey bead, moisture absorption in environment of the optimum below 50 DEG C, when temperature is higher than 50
DEG C, " discharging water " degree of clay is just more than " water suction " degree, significantly reduces shadow of the external environment condition to temperature sensing optical fiber sensitivity
Ring, improve the accuracy rate of detection, and using pure natural montmorillonite drier as raw material, dry activation and be made, without any addition
Agent and lyotrope, it is a kind of corrosion-free, nontoxic, non-harmful green product, general offal treatment can be used as after using,
Do not pollute the environment, can natural degradation, in the environment of various temperature, moisture pick-up properties can keep stable, and moisture pick-up properties is good,
Saturation hydroscopicity is more than the 50% of itself weight, is 1.5 times of conventional dry drying prescription, improves the sensitivity of detection.
Brief description of the drawings
Fig. 1 is the utility model geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus structural representation；
Fig. 2 is the optical fiber covering device of the utility model geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus
Structural representation.
In figure：1st, control system；2nd, distributed optical fiber temperature sensor；3rd, temperature sensing optical fiber；4th, optical fiber covering device；5th, dry
Oxidant layer；6th, flexible hose.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Refer to Fig. 1 and Fig. 2, a kind of embodiment provided by the utility model：A kind of geothermal pump well connecting pipe is high-precision
Spend optical fiber multiple spot leakage detection apparatus, including control system 1, the input of control system 1 is defeated with distributed optical fiber temperature sensor 2
Go out end signal connection, distributed optical fiber temperature sensor 2 is connected with temperature sensing optical fiber 3 by FC/APC joints, outside temperature sensing optical fiber 3
Optical fiber covering device 4 is arranged with wall, optical fiber covering device 4 is specifically made up of desiccant layer 5 and flexible hose 6, temperature sensing optical fiber 3 with
Desiccant layer 5 is provided between flexible hose 6, temperature sensing optical fiber 3 is specially the standard multimode fiber that fibre core is 62.5/125, is dried
Oxidant layer 5 is specifically made up of montmorillonite drier, and flexible hose 6 is specially water penetration flexible hose 6, and temperature sensing optical fiber 3 prolongs Yan Diyuan
The connecting pipe laying of heat pump underground.
Operation principle, during work, control system 1 is subjected to the data that distributed optical fiber temperature sensor 2 is fed back, distribution
Formula fibre optic temperature sensor 2 can be analyzed and handled to the temperature information detected by temperature sensing optical fiber 3, and to information processing
After feed back to control system 1, on the one hand optical fiber covering device 4 can be effectively protected temperature sensing optical fiber 3, meanwhile, when pipeline send out
During raw leakage, the leak in pipeline can enter in desiccant layer 5 through flexible hose 6, while desiccant layer 5 absorbs leak,
Temperature sensing optical fiber 3 can experience the change of ambient temperature, and temperature information is fed back into distributed optical fiber temperature sensor 2,
And control system 1 is finally fed back to, due to water and surrounding soil temperature difference, control system 1 monitors temperature at pipe leakage
Change, so as to and alarm, leak position is judged rapidly, because desiccant layer 5 is specifically by montmorillonite drier
It is made, and montmorillonite drier face shaping is grey bead, moisture absorption in environment of the optimum below 50 DEG C, when temperature is higher than
50 DEG C, " discharging water " degree of clay is just more than " water suction " degree, significantly reduces external environment condition to the sensitivity of temperature sensing optical fiber 3
Influence, improve the accuracy rate of detection, and using pure natural montmorillonite drier as raw material, dry activation and be made, add without any
Add agent and lyotrope, be a kind of corrosion-free, nontoxic, non-harmful green product, can be used as after using at general discarded object
Reason, does not pollute the environment, can natural degradation, in the environment of various temperature, moisture pick-up properties can keep stable, and moisture pick-up properties is good
Good, saturation hydroscopicity is more than the 50% of itself weight, is 1.5 times of conventional dry drying prescription.
Claims (6)
1. a kind of geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus, including control system (1), its feature exist
In the input of the control system (1) is connected with the output end signal of distributed optical fiber temperature sensor (2), the distribution
Formula fibre optic temperature sensor (2) is connected with temperature sensing optical fiber (3) by FC/APC joints, is covered on the outer wall of the temperature sensing optical fiber (3)
Provided with optical fiber covering device (4), the optical fiber covering device (4) is specifically made up of desiccant layer (5) and flexible hose (6).
2. geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus according to claim 1, it is characterised in that
Desiccant layer (5) is provided between the temperature sensing optical fiber (3) and flexible hose (6).
3. geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus according to claim 1, it is characterised in that
The temperature sensing optical fiber (3) is specially the standard multimode fiber that fibre core is 62.5/125.
4. geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus according to claim 1, it is characterised in that
The desiccant layer (5) is specifically made up of montmorillonite drier.
5. geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus according to claim 1, it is characterised in that
The flexible hose (6) is specially water penetration flexible hose (6).
6. geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus according to claim 1, it is characterised in that
The temperature sensing optical fiber (3) is prolonged lays along earth source heat pump underground connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720485546.XU CN206725156U (en) | 2017-05-04 | 2017-05-04 | A kind of geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720485546.XU CN206725156U (en) | 2017-05-04 | 2017-05-04 | A kind of geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus |
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| Publication Number | Publication Date |
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| CN206725156U true CN206725156U (en) | 2017-12-08 |
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| CN201720485546.XU Active CN206725156U (en) | 2017-05-04 | 2017-05-04 | A kind of geothermal pump well connecting pipe high-precision optical fiber multiple spot leakage detection apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181052A (en) * | 2018-01-09 | 2018-06-19 | 中国计量大学 | A kind of temperature detection signal denoising method and system |
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2017
- 2017-05-04 CN CN201720485546.XU patent/CN206725156U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181052A (en) * | 2018-01-09 | 2018-06-19 | 中国计量大学 | A kind of temperature detection signal denoising method and system |
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