CN207264827U - A kind of optoelectronic composite cable - Google Patents
A kind of optoelectronic composite cable Download PDFInfo
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- CN207264827U CN207264827U CN201720846667.2U CN201720846667U CN207264827U CN 207264827 U CN207264827 U CN 207264827U CN 201720846667 U CN201720846667 U CN 201720846667U CN 207264827 U CN207264827 U CN 207264827U
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- composite cable
- optoelectronic composite
- pipe
- conductive layer
- steel pipe
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Abstract
The utility model provides a kind of oil well optoelectronic composite cable, including light unit, the laser for being coated on light unit surface continuously welds the conductive layer of formation, the temperature-resistant insulation layer formed in continuous extrusion outside conductive layer and the exterior steel pipe being coated on outside the temperature-resistant insulation layer.The light unit of the utility model optoelectronic composite cable and conductive layer are coaxial configuration, are effectively utilized space in the pipe of optoelectronic composite cable so that optical fiber can have enough spaces to increase excess fiber length to adapt to the tension of the thermal expansion of optical cable elongation or outside.Meanwhile the thickness of insulating layer outside conductive layer can also increase, the insulation performance of conductive layer can be improved.
Description
Technical field
Optoelectronic composite cable technical field is the utility model is related to, more particularly to a kind of compound for the photoelectricity in oil well
Cable.
Background technology
In oil well exploration, detector needs to carry out data transmission using oil well optoelectronic composite cable (calling oil well optical cable in the following text).
Wherein the optical fiber sensing system of detector utilizes optical fiber excellent properties, and such as electromagnetism interference and the performance of atomic radiation, footpath is thin, matter
Soft, light weight mechanical performance, water resistant, high temperature resistant, corrosion resistant chemical property, overcomes underground adverse circumstances, accurately measure
Pit shaft and well site environmental parameter.Moreover, small using the detector cross-sectional area of optical fiber sensing system, take up space pole in the wellbore
It is small, it is easy to use.Detector receives optical signal and electric energy by oil well optical cable, and oil well optical cable is put into underground and collects sample by when use
Notebook data, oil well is pulled out after the completion of exploration by oil well optical cable.Certainly, oil well optical cable can also be used for other operations of underground.
More than being applied in 120 DEG C, 100MPa high pressures, the adverse circumstances of high chemical attack in oil well, not only to select
The special optical fiber of relevant temperature grade, protects the cable configuration design of optical fiber also extremely important.Existing oil well optical cable is usually
Some light units being wrapped in the steel pipe of center and some circular insulated conductor concentric strandings are arranged at the outer of oil well optical cable
In layer steel pipe, since the outside diameter of oil well optical cable limits, the wall thickness of outer layer pipe requires to select according to down-hole pressure, certain in outside diameter
In the case of, the internal diameter size of center steel pipe is also a definite value, since the coefficient of thermal expansion of metal is higher than the coefficient of thermal expansion of optical fiber,
The center steel tube elongation under heating condition, in the case of not having enough remaining length in optical fiber, optical fiber can be subject to exterior tension, can
Optical fiber attenuation is risen or even is broken, influence fiber lifetime.
Meet that optical fiber has enough remaining length, then there must be enough spaces to make optical fiber be in bending, uniquely may
Exactly increase the outside diameter of light unit.And in the interior space of circles of internal diameter dimension limitation, increase light unit outside diameter can cause conducting wire
Outer insulation diameter reduces.The reduction of outer insulation diameter can cause the insulating capacity of conducting wire to decline, and under complex environment, oil well optical cable may
Because the insulating layer of conducting wire is subject to destroy so as to can not power.
Utility model content
The utility model is mainly solving the technical problems that provide a kind of oil for being coaxially disposed light unit and insulated conductor
Well optoelectronic composite cable, can increase the outside diameter of light unit, optical fiber is had enough remaining length, and do not influence the insulating properties of conducting wire
Energy.
In order to solve the above technical problems, a kind of technical solution provided by the utility model is：A kind of optoelectronic composite cable is provided,
Including light unit, be coated on light unit surface conductive layer, in outside conductive layer continuous extrusion formed insulating layer and be coated on
Exterior steel pipe outside the insulating layer.
Wherein, light unit includes the fine steel pipe of shield and is coated on some optical fiber protected in fine steel pipe and is filled in the optical fiber
With the fiber paste in the fine steel pipe of shield.
Wherein, conductive layer is the copper pipe that copper strips is coated on to light unit surface by the way of laser continuously welds.
Wherein, conductive layer is the copper pipe being coated on copper strips by the way of laser continuously welds on the outside of the fine steel pipe of shield.
Wherein, conductive layer is copper alloy tube or aluminum pipe or aluminium-alloy pipe.
Wherein, exterior steel pipe is monolayer steel pipe.
Wherein, exterior steel pipe includes two layers, is respectively inner layer steel pipe and outer layer pipe, and inner layer steel pipe is coated on outside insulating layer
Side, outer layer pipe are coated on the outside of inner layer steel pipe.
Wherein, optical fiber is carbon coating optical fiber.
Wherein, fiber paste is suction hydrogen fiber paste.
Wherein, copper pipe thickness is less than or equal to 0.15mm.
The beneficial effects of the utility model are：It is different from the situation of the prior art, the light of the utility model optoelectronic composite cable
Unit and conductive layer are coaxial configuration, are effectively utilized space in the pipe of optoelectronic composite cable so that optical fiber can have enough skies
Between can increase excess fiber length with adapt to outside tension.Meanwhile the thickness of insulating layer outside conductive layer can also increase, improve
The insulation performance of conductive layer.In addition, also there are preferable NdFeB permanent magnets as conductive layer using layers of copper, it is compound photoelectricity can be improved
The use reliability of cable, and then improve the service life of optoelectronic composite cable.
Brief description of the drawings
Fig. 1 is the structure chart of the first embodiment of the utility model optoelectronic composite cable；
Fig. 2 is the sectional view of the first embodiment of the utility model optoelectronic composite cable；
Fig. 3 is that infiltration rate of the hydrogen in different metal compares figure；
Fig. 4 is the structure chart of the second embodiment of the utility model optoelectronic composite cable；
Fig. 5 is the sectional view of the second embodiment of the utility model optoelectronic composite cable.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, to each exemplary reality provided by the utility model
The technical solution for applying example is clearly and completely described.In the case where there is no conflict, following each embodiments and its technical characteristic
It can be mutually combined.
Please refer to Fig.1 and Fig. 2, be the structure chart and sectional view of the first embodiment of the utility model optoelectronic composite cable.
The utility model oil well optoelectronic composite cable 100, can be used the exploration system in oil well, as transmission medium to resist underground
The adverse circumstances such as high temperature, high pressure, high acid corrosion simultaneously keep long-term work.
The utility model optoelectronic composite cable 100 includes light unit 10, is coated on the conductive layer 20 on 10 surface of light unit, in leading
The insulating layer 30 that 20 outer continued extrusion of electric layer is formed and the exterior steel pipe 40 being coated on the outside of the insulating layer 30.
The light unit 10 include the fine steel pipe 101 of shield, some optical fiber 102 being coated in the shield fibre steel pipe 101 and
It is filled in the optical fiber 102 and the fiber paste 103 in the fine steel pipe 101 of shield.In the present embodiment, optical fiber 102 is carbon coating optical fiber, its
It is to form one layer of fine and close carbon-coating in optical fiber surface, the intensity region for reducing optical fiber surface also eliminates low-intensity area, improves light
Fine mechanical performance, in addition carbon coating also there is excellent resistant to hydrogen performance, can to avoid fibre loss caused by hydrogen and water with
Strength retrogression.The fine steel pipe 101 of shield is longitudinally to be coated on the outside of optical fiber 102 by laser welding using 316L stainless steel bands.Fiber paste
103 is inhale hydrogen fiber paste, and it is to add suction hydrogen agent in fiber paste to make it have hydrogen absorption function to inhale hydrogen fiber paste, prevents danger of the hydrogen to optical fiber
Evil.
The conductive layer 20 is densely to be coated on copper strips by the way of laser continuously welds to protect the outer of fine steel pipe 101
Side forms one layer of smooth copper pipe.The thickness of the copper pipe is less than or equal to 0.15mm, which answers as the utility model photoelectricity
The electrical transmission media of cable is closed, there is good electric conductivity, can meet the power demands of exploration system.
In addition, oil well can there are a large amount of hydrogen and free hydrogen, hydrogen or free hydrogen can ooze coat of metal into
Enter fiber core, chemical reaction can occur with the lattice defect in fibre core or doped chemical and form OH keys, can also be with hydrogen molecule
State is accumulated in inside fibre core, and above two phenomenon can all cause the increase of fibre loss, influences the transmission performance of optical fiber.
Refer to Fig. 3, seepage velocity of the hydrogen in gold, silver, copper, aluminium than slow 2 orders of magnitude of infiltration rate in iron,
So copper pipe is also used as hydrogen barrier layer, can reduce oil well optical fibre in optical cable is influenced by " hydrogen loss ", is reduced hydrogen and is answered in photoelectricity
The infiltration rate in cable is closed, improves the service life of optoelectronic composite cable.
Electric conductivity is realized as conductive layer using copper pipe in the present embodiment, in other embodiments can be with
Power supply is realized as conductive layer using copper alloy tube, aluminum pipe or aluminium-alloy pipe.
Insulating layer 30 is made of high molecular material, in the present embodiment using polytetrafluoroethylplastic plastic, has high temperature resistant
Characteristic, in other embodiments, can also select other heat safe insulating materials to make insulation according to use environment temperature
Layer.
Exterior steel pipe 40 is the NAS825 alloyed steel strips longitudinal wrap using one layer thicker and is continuously welded in the outside of insulating layer 30
Formed.Wherein NAS825 alloys are containing nickelic advanced corrosion resisting alloy, its is resistance to for oxidisability and non-oxidizing acid
The excellent performance of corrosion.In oil well rugged environment, play the role of high temperature resistant, corrosion resistant.
Fig. 4 and Fig. 5 is referred to, is the structure chart and sectional view of the second embodiment of the utility model optoelectronic composite cable.
The utility model oil well optoelectronic composite cable 100, including light unit 10, it is coated on the conductive layer 20 on 10 surface of light unit, in leading
The insulating layer 30 that 20 outer continued extrusion of electric layer is formed and the exterior steel pipe 40 being coated on the outside of the insulating layer 30.With first
The difference of embodiment is that exterior steel pipe 40 is made of two layers of steel pipe, including is coated on the internal layer in the outside of insulating layer 30
Steel pipe 50 and the outer layer pipe 60 being coated on the outside of inner layer steel pipe.
Wherein, which is continuously to be welded in the outside of insulating layer 30 using 316L stainless steel bands longitudinal wrap, and 316L is not
The steel that becomes rusty is the stainless steel grade containing molybdenum, has good heat resistance and corrosion resistance.The outer layer pipe 60 is using relatively thin
NAS825 alloyed steel strips longitudinal wrap and the outside for being continuously welded in inner layer steel pipe 50, NAS825 alloys are containing nickelic advanced corrosion-resistant
Alloy, its corrosion resistant excellent performance for oxidisability and non-oxidizing acid.In oil well rugged environment, play resistance to
High temperature, corrosion resistant performance.
In the utility model, the outside of light unit 10 welds one using the technique that laser continuously welds on the outside of the fine steel pipe of shield
Layer thin-wall copper pipe, instead of traditional copper electric wire as electrical conductor, then squeezes again as conductive layer and resistance hydrogen medium outside copper pipe
One layer of polymeric dielectric layer of bag allows copper pipe to be used as insulated electric conductor.Using laser welding, and the technique continuously welded
One layer of thin-wall copper pipe is welded, other welding manners solder skip as caused by argon arc welding midway must replace electrode possibility is avoided and shows
As, producible continuous length is up to tens or up to a hundred kilometers.
The thickness of copper pipe is less than or equal to 0.15mm, the selection Main Basiss direct current resistance requirement of thickness in the utility model
And insulation performance requirement.Because outside diameter is limited, relative to other optoelectronic composite cables, copper pipe thickness used is thinner in the utility model,
The space being effectively utilized in pipe, improves the energy that the electric property, optical property and tolerance hydrogen loss of optoelectronic composite cable influence
Power.
The electric unit of the utility model optoelectronic composite cable and light unit are coaxial configuration, are effectively utilized optoelectronic composite cable
Space in pipe so that optical fiber can have enough spaces to increase excess fiber length to adapt to the tension of outside.Meanwhile electricity is single
Thickness of insulating layer outside member can also increase, and improve the dielectric strength of electric unit, ensure that the insulation performance of optoelectronic composite cable.Separately
Outside, protect optical fiber from hydrogen loss using inhaling hydrogen fiber paste, using copper pipe as conductive layer while has preferable NdFeB permanent magnets, can
To improve the use reliability of optoelectronic composite cable, and then improve the service life of optoelectronic composite cable.
The foregoing is merely the embodiment of the utility model, it does not limit the scope of the patent of the present invention, all
It is equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly or indirectly uses
In other related technical areas, it is equally included in the patent within the scope of the utility model.
Claims (10)
- A kind of 1. optoelectronic composite cable, it is characterised in that including：Light unit, is coated on the conductive layer on light unit surface, in conductive layer The insulating layer that outer continuous extrusion is formed, the exterior steel pipe being coated on outside the insulating layer, the light unit include the fine steel pipe of shield and bag Some optical fiber being overlying in the fine steel pipe of shield, the conductive layer is the copper pipe that copper strips is coated on to the light unit surface.
- 2. optoelectronic composite cable as claimed in claim 1, it is characterised in that the optical fiber surface coats fiber paste.
- 3. optoelectronic composite cable as claimed in claim 1, it is characterised in that the conductive layer is that copper strips is used laser sequential welding The mode connect is coated on the copper pipe on the light unit surface.
- 4. optoelectronic composite cable as claimed in claim 2, it is characterised in that the conductive layer is that copper strips is used laser sequential welding The mode connect is coated on the copper pipe on the outside of the fine steel pipe of the shield.
- 5. optoelectronic composite cable as claimed in claim 1, it is characterised in that the conductive layer is that copper alloy tube or aluminum pipe or aluminium close Jin Guan.
- 6. optoelectronic composite cable as claimed in claim 1, it is characterised in that the exterior steel pipe is monolayer steel pipe.
- 7. optoelectronic composite cable as claimed in claim 1, it is characterised in that the exterior steel pipe includes two layers, is respectively internal layer Steel pipe and outer layer pipe, the inner layer steel pipe are coated on the outside of the insulating layer, and the outer layer pipe is coated on the internal layer steel On the outside of pipe.
- 8. optoelectronic composite cable as claimed in claim 1, it is characterised in that the optical fiber is carbon coating optical fiber.
- 9. optoelectronic composite cable as claimed in claim 2, it is characterised in that the fiber paste is suction hydrogen fiber paste.
- 10. the optoelectronic composite cable as described in claim 3 or 4, it is characterised in that the copper pipe thickness is less than or equal to 0.15mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720846667.2U CN207264827U (en) | 2017-07-12 | 2017-07-12 | A kind of optoelectronic composite cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720846667.2U CN207264827U (en) | 2017-07-12 | 2017-07-12 | A kind of optoelectronic composite cable |
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| Publication Number | Publication Date |
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| CN207264827U true CN207264827U (en) | 2018-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897070A (en) * | 2020-08-26 | 2020-11-06 | 江苏亨通海洋光网系统有限公司 | Relay submarine optical cable structure capable of reducing direct current resistance |
-
2017
- 2017-07-12 CN CN201720846667.2U patent/CN207264827U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897070A (en) * | 2020-08-26 | 2020-11-06 | 江苏亨通海洋光网系统有限公司 | Relay submarine optical cable structure capable of reducing direct current resistance |
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