CN203274954U - Novel composite sensing optical cable - Google Patents
Novel composite sensing optical cable Download PDFInfo
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- CN203274954U CN203274954U CN201320298384.0U CN201320298384U CN203274954U CN 203274954 U CN203274954 U CN 203274954U CN 201320298384 U CN201320298384 U CN 201320298384U CN 203274954 U CN203274954 U CN 203274954U
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Abstract
The utility model discloses a novel composite sensing optical cable, comprising a carbon fiber yarn, a temperature-sensitive fiber, electric power conductors, a sheath, and an insulating covering. The carbon fiber yarn, the temperature-sensitive fiber, the electric power conductors, and the sheath are wrapped by the insulating covering. The carbon fiber yarn is wrapped by the sheath. The number of the temperature-sensitive fiber is more than one, and the number of the electric power conductors is one pair. The carbon fiber yarn is connected with the surrounding electric power conductors in a cross manner, so as to form a parallel circuit and supply power. The carbon fiber yarn generates heat after the cable is charged with electricity, so that the optical cable is uniformly heated for long distance. The temperature-sensitive fiber is wrapped by the carbon fiber yarn, or the temperature-sensitive fiber is arranged parallel with the carbon fiber yarn. The carbon fiber yarn generates heat when being charged with electricity, so that the optical cable is uniformly heated. A distributed fiber temperature detection technology is used to realize measurement of temperature of each point along the line. The optical cable can be uniformly heated for long distance (more than 2km), and the cable can detect long-distance leakage.
Description
Technical field
The utility model relates to a kind of novel sensing media, relates in particular to a kind of a kind of novel sensing optic cable that can be used for seepage of dam, hydrocarbon seepage, Water pipe leaking, groundwater flow and the monitoring of Rock And Soil water cut.
Background technology
Distributed optical fiber temperature measurement technology (DTS) adopts optical cable as sensitive detection parts, have distributed measurement, measuring distance length, the simple long-time stability advantages of higher that reaches of construction, the fields such as fire fire-fighting, cable thermometric, concrete measuring temperature and monitoring of leakage now have been widely used in, in order to access better monitoring effect, various have the functional optical cable of specific sensing characteristics also in continuous innovation and creation.
Utilizing the distributed temperature measuring technology to carry out monitoring of leakage uses in the part engineering project, practical effect is not good, its reason is: seepage material temperature and environment temperature difference are too little, during as dam body seepage, Water pipe leaking, wandering water is migrated in peripheral Rock And Soil mutual heat interchange is also occured simultaneously, percolating fluid and ambient temperature just quite, just can't be differentiated seepage flow by the technical method of testing temperature abnormal distribution and whether occur.If a kind of self heatable temperature measuring optical cable is arranged, through around optical cable the time, higher than environment temperature, heat interchange occurs due to the optical cable temperature when seepage flow, cause the optical cable temperature to reduce, just can effectively carry out the distributed temperature measuring detection to seepage.The technology that existing this series products adopts is that metal electric heater strip and optical fiber are carried out parallel laid, then electrical heating wire is carried out heating power, reaches the purpose to the optical fibre in optical cable heating, has in practice great number of issues: (1) heating is inhomogeneous.Electrical heating wire contacts with the optical fiber point type, and is very high in contact point position temperature, optical fiber even occurs scald the sheath fracture, low at noncontact point fiber optic temperature, temperature distributing disproportionation, and Effect on Detecting is not good; (2) the resistance wire resistance is smaller.Reach very thin that uniform heating effect just needs that resistance wire does, thin resistance wire fracture and can't complete heating very easily in construction; (3) optical cable heating distance is short.Owing to adopting city's electrical heating, voltage is limited, and the heating distance often only has hundreds of rice, can't satisfy the actual monitoring demand of heavy construction.Invent a kind of can homogeneous heating, intensity is high and the interior heating optical cable tool of heating distance is of great significance and application prospect.
Summary of the invention
Technical problem to be solved in the utility model be to provide a kind of can the evenly heating of long distance, convenient construction, and seepage of dam, pipe leakage, underground percolation etc. are grown the optical cable for sensing of distance, permanently effective monitoring field seepage.
The utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of NEW TYPE OF COMPOSITE sensing optic cable, it is characterized in that, comprise carbon fiber wire, temperature sensing optical fiber, electric power conductor, sheath and insulated cladding, described carbon fiber wire, temperature sensing optical fiber, electric power conductor and sheath are wrapped up by insulated cladding, and described carbon fiber wire is wrapped up by sheath.Described temperature sensing optical fiber is more than 1, and described electric power conductor is 1 pair.Described carbon fiber wire and electric power conductor cross connection on every side are to form parallel circuit.Adopt in the lump two electric power conductors of stranding to be responsible for power supply, described electric power conductor thickness is directly proportional to the power supply distance size.Described electric power conductor is diameter 2～4mm strand copper wire.Described carbon fiber wire is divided into long 30～50m and is equal to some sections of internal resistance.Described NEW TYPE OF COMPOSITE sensing optic cable adopts the temperature difference of the described composite sensing optical cable of distributed optical fiber temperature measurement technology for detection and environment.
As the further optimization of such scheme, described temperature sensing optical fiber is wrapped up by carbon fiber wire, perhaps described temperature sensing optical fiber laying parallel with carbon fiber wire.
As the further optimization of such scheme, described temperature sensing optical fiber is 2, and described temperature sensing optical fiber is positioned at the outside of carbon fiber wire, and described 2 temperature sensing optical fibers are that single-mode fiber is or/and multimode optical fiber.
As the further optimization of such scheme, described sheath and insulated cladding material all adopt high insulation material water-proof material.
As the further optimization of such scheme, described high insulation material water-proof material is PE or PVC or low smoke and zero halogen material.
As the further optimization of such scheme, described insulated cladding vertical cross-section is circular.
Carbon fiber wire and electric power conductor also play reinforced action to optical cable, strengthen tension and the rupture strength of optical cable.
A kind of NEW TYPE OF COMPOSITE sensing optic cable of the utility model proposes the temperature sensing optical fiber in optical cable is heated to temperature apparently higher than environment temperature, and when having flow to cross optical cable, fluid can be taken away heat, makes the temperature sensing optical fiber cooling, thereby reaches the effect of leakage monitoring.The present invention has adopted the carbon fiber wire that resistance is large, heating is even and tensile strength is high as heating element and reinforcing body, waited to mould with temperature sensing optical fiber, electric power conductor and be the functional form temperature measuring optical cable, carbon fiber wire and electric power conductor also play reinforced action to optical cable, strengthen tension and the rupture strength of optical cable.
When switching on to carbon fiber wire, carbon fiber wire will generate heat, and temperature sensing optical fiber will be heated intensification, medium around the amplitude that heats up and speed and optical cable is closely related, mobile gas, water or wet goods are arranged through out-of-date around optical cable, will take away the heat of optical cable, the optical cable temperature will descend.Adopt the distributed optical fiber temperature measurement technology, can record space of the present invention every bit temperature by embedded with temperature-sensing optical fiber in optical cable.To carbon fiber wire energising heating of the present invention, when seepage occurs, will form low temperature abnormality and heating rate abnormal on the optical cable temperature logs, but principle convection cell seepage is surveyed and is located accordingly.In order to increase the heating distance, the present invention adopts parallel cable, intersects to be connected with carbon fiber wire, forms parallel circuit for electrical heating, by this power supply mode, adopts civil power just can complete the above optical cable heating of 2km, has realized the long distance measurement of seepage.
The beneficial effect main manifestations of a kind of NEW TYPE OF COMPOSITE sensing optic cable of the utility model is:
1. adopt carbon fiber wire to heat in optical cable, realized homogeneous heating;
2. employing parallel cable is intersected and to be connected with carbon fiber wire, forms parallel circuit for electrical heating, realize the long of optical cable heated apart from (more than 2km), and to the long distance measurement of seepage;
3. adopt optical cable as the thermometric device, have distributed measurement, measuring distance length, the simple long-time stability advantages of higher that reaches of construction;
4. the tension of optical cable and rupture strength are larger.
Description of drawings
Fig. 1 the utility model embodiment 1 structure cross-sectional view.
Fig. 2 the utility model schematic equivalent circuit.
Fig. 3 is the utility model power supply mode schematic diagram.
Fig. 4 the utility model rig-site utilization schematic diagram.
Fig. 5 the utility model embodiment 2 structure cross-sectional views.
Fig. 6 the utility model embodiment 3 structure cross-sectional views.
1. temperature sensing optical fibers wherein; 2. carbon fiber wire; 3. sheath; 4. electric power conductor; 5. insulated cladding; 6. conducting terminal.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment of the utility model, the utility model is described in further detail.
Embodiment 1: with reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4.
A kind of NEW TYPE OF COMPOSITE sensing optic cable comprises carbon fiber wire 2, temperature sensing optical fiber 1, electric power conductor 4, sheath 3 and insulated cladding 5.Described temperature sensing optical fiber 1 is 1, and described electric power conductor 4 is 1 pair.Described carbon fiber wire 2 and on every side electric power conductor 4 cross connections to be forming parallel circuit, and power supply simultaneously can realize optical cable length apart from homogeneous heating after utilizing carbon fiber wire 2 energisings in heating.Described temperature sensing optical fiber 1 is wrapped up by carbon fiber wire 2, or described temperature sensing optical fiber 1 and the parallel laying of carbon fiber wire 2, and carbon fiber wire 2 heating powers just can carry out homogeneous heating to temperature sensing optical fiber 1.Adopt the responsible power supply of two electric power conductors 4 of stranding in the lump, described electric power conductor 4 thicknesses are directly proportional to the power supply distance size.Described sheath 3 and insulated cladding 5 materials all adopt high insulation material water-proof material.Described high insulation material water-proof material is PE or PVC or low smoke and zero halogen material.Described electric power conductor is 2～4mm strand copper wire.Described carbon fiber wire 2 is divided into long 30～50m and is equal to some sections of internal resistance.The present embodiment adopts the distributed optical fiber temperature measurement technology to realize the measurement of each point temperature along the line.
In the present embodiment; cable configuration is that described electric power conductor 4, carbon fiber wire 2 and temperature sensing optical fiber 1 are by insulated cladding 5 parcels; temperature sensing optical fiber 1 is surrounded by carbon fiber wire 2; form one and add thermal center (-tre) parcel bundle; be covered with insulating sheath 3 outward; two electric power conductors 4 lay with temperature sensing optical fiber 1 is parallel, cross insulating sheath 3 protection strandings.Its implementation process is mainly as follows: around (1) is same with temperature sensing optical fiber 1 by pay-off equipment, parallel laying 4-6 thigh carbon fiber wire 2 is emitted together, passes through and moulds extrusion equipment, after covering sheath 3, becomes a cable; (2) then peel off 1～2cm window at interval of 30～50 meters on optical cable, the outer layer insulation sheath 3 of carbon fiber wire 2 is peeled off, expose carbon fiber wire 2; (3) two electric power conductors 4 are placed on heating optical cable both sides parallel arrangement; (4) in order to solve to the long distance power supply of heating optical cable, adopt improved cross connect formation parallel circuit form to supply electrical heating to the carbon fiber wire 2 of optical cable, utilize conducting terminal 6 at the window place that separates, carbon fiber wire 2 to be connected with electric power conductor 4, the order of connection is left and right electric power conductor 4 cross connection successively, two 4 one of electric power conductors connect positive pole, one connects negative pole, forms feed circuit as shown in Figure 2; (5) temperature sensing optical fiber 1, carbon fiber wire 2, sheath 3 and the electric power conductor 4 after connecting passes through extruding machine coating one deck insulated cladding 5 again, with the 4 insulation isolation of both positive and negative polarity electric power conductor, and the protection stranding; When (6) field monitoring is used, as shown in Figure 3, at first a kind of NEW TYPE OF COMPOSITE sensing optic cable of the present invention buried underground in the monitoring thing or be attached on monitoring thing surface, electric power conductor 4 is switched on power, all act on so an identical operating voltage on each section carbon fiber wire 2, carbon fiber wire 2 evenly generates heat, and embedded with temperature-sensing optical fiber 1 is switched in optical fiber distributed type tester (DTS) temperature in optical cable is carried out distributed measurement; (7) in case the seepage flow generation, with the heat of taking away in a kind of NEW TYPE OF COMPOSITE sensing optic cable of the present invention, referring to Fig. 3, record the indexs such as Temperature Distribution is abnormal, heating rate, outage rate of temperature fall according to optical fiber each position, judge whether output and produce the position of seepage, reach the purpose of seepage and water cut qualitative test.
Embodiment 2: with reference to Fig. 5.The present embodiment finishes the structure distortion on the basis of embodiment 1.2 temperature sensing optical fibers 1 are put into the outside of carbon fiber wire 2, two temperature sensing optical fibers 1 can have the combinations such as single mode-multimode 50/125, multimode 50/125-multimode 62.5/125, two multimode 50/125 or multimode 62.5/125, and are distinguished with the different colors that apply.Described optical cable comes leakage monitoring by temperature variation, and for the instrument of temperature variation monitoring, has plenty of the employing single-mode fiber, some employing multimode optical fibers, so for the requirement of different instruments to optical fiber, taked above combination, in order to adapt to dissimilar optical fiber temperature-measurement instrument, guarantee to satisfy the demand of different instrument thermometrics, promote its compatibility.General thermometric only gets final product with an optical fiber, and another root optical fiber is as standby optical fiber.
Embodiment 3: with reference to Fig. 6.The present embodiment is out of shape on the basis of embodiment 1, and described sensing optic cable insulated cladding vertical cross-section is designed to circle, is convenient to optical cable and lays in the flush type engineering, prevents the optical cable torque failure.
The above has done detailed description to the utility model preferred implementation by reference to the accompanying drawings, but the utility model is not limited to above-mentioned embodiment, in the ken that those of ordinary skills possess, can also make a variety of changes under the prerequisite that does not break away from the utility model aim.
Do not break away from design of the present utility model and scope and can make many other changes and remodeling.Should be appreciated that the utility model is not limited to specific embodiment, scope of the present utility model is defined by the following claims.
Claims (10)
1. NEW TYPE OF COMPOSITE sensing optic cable, it is characterized in that, comprise carbon fiber wire, temperature sensing optical fiber, electric power conductor, sheath and insulated cladding, described carbon fiber wire, temperature sensing optical fiber, electric power conductor and sheath are wrapped up by insulated cladding, and described carbon fiber wire is wrapped up by sheath.
2. a kind of NEW TYPE OF COMPOSITE sensing optic cable described according to claims 1, is characterized in that, described temperature sensing optical fiber is more than 1, and described electric power conductor is 1 pair.
3. a kind of NEW TYPE OF COMPOSITE sensing optic cable according to claim 1 and 2, is characterized in that, described carbon fiber wire and electric power conductor cross connection on every side are to form parallel circuit.
4. a kind of NEW TYPE OF COMPOSITE sensing optic cable according to claim 1 and 2, is characterized in that, described temperature sensing optical fiber is wrapped up by carbon fiber wire.
5. a kind of NEW TYPE OF COMPOSITE sensing optic cable according to claim 1 and 2, is characterized in that, the laying parallel with carbon fiber wire of described temperature sensing optical fiber.
6. a kind of NEW TYPE OF COMPOSITE sensing optic cable according to claim 1 and 2, is characterized in that, described temperature sensing optical fiber is 2, and described temperature sensing optical fiber is positioned at the outside of carbon fiber wire, and described 2 temperature sensing optical fibers are that single-mode fiber is or/and multimode optical fiber.
7. a kind of NEW TYPE OF COMPOSITE sensing optic cable according to claim 3, is characterized in that, adopts in the lump two electric power conductors of stranding to be responsible for power supply, and described electric power conductor thickness is directly proportional to the power supply distance size.
8. a kind of NEW TYPE OF COMPOSITE sensing optic cable according to claim 1 and 2, is characterized in that, described electric power conductor is diameter 2～4mm strand copper wire.
9. a kind of NEW TYPE OF COMPOSITE sensing optic cable according to claim 1 and 2, is characterized in that, described carbon fiber wire is divided into long 30～50m and is equal to some sections of internal resistance.
10. a kind of NEW TYPE OF COMPOSITE sensing optic cable according to claim 1 and 2, is characterized in that, described insulated cladding vertical cross-section is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320298384.0U CN203274954U (en) | 2013-05-28 | 2013-05-28 | Novel composite sensing optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320298384.0U CN203274954U (en) | 2013-05-28 | 2013-05-28 | Novel composite sensing optical cable |
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| CN203274954U true CN203274954U (en) | 2013-11-06 |
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| CN201320298384.0U Expired - Lifetime CN203274954U (en) | 2013-05-28 | 2013-05-28 | Novel composite sensing optical cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871667A (en) * | 2014-02-27 | 2014-06-18 | 新宇电缆集团股份有限公司 | Cold-resistant and high-temperature resistant power cable |
| CN104183334A (en) * | 2013-05-28 | 2014-12-03 | 苏州南智传感科技有限公司 | Novel composite sensing optical cable |
-
2013
- 2013-05-28 CN CN201320298384.0U patent/CN203274954U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183334A (en) * | 2013-05-28 | 2014-12-03 | 苏州南智传感科技有限公司 | Novel composite sensing optical cable |
| CN103871667A (en) * | 2014-02-27 | 2014-06-18 | 新宇电缆集团股份有限公司 | Cold-resistant and high-temperature resistant power cable |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20131106 |