CN102636848B - Submarine cable for measuring temperature and sensing strain by aid of miniature sensing optical unit - Google Patents
Submarine cable for measuring temperature and sensing strain by aid of miniature sensing optical unit Download PDFInfo
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- CN102636848B CN102636848B CN201210083940.2A CN201210083940A CN102636848B CN 102636848 B CN102636848 B CN 102636848B CN 201210083940 A CN201210083940 A CN 201210083940A CN 102636848 B CN102636848 B CN 102636848B
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- 239000000835 fiber Substances 0.000 claims abstract description 10
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Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention relates to a miniature sensing optical unit, which is embedded into the inside or the outside of a cable and comprises a miniature sensing optical unit body. The miniature sensing optical unit is characterized in that the miniature sensing optical unit comprises one or two or a plurality of sensing optical fibers, a sealed stainless steel pipe is covered on the outsides of the sensing optical fiber, water-resistant fiber paste is filled in the stainless steel pipe, and the surplus lengths of the optical fibers in the stainless steel pipe are larger than or equal to 0 and are smaller than 0.03%. The invention further relates to an electric cable, an optical cable, an aerial bare line and a submarine cable which adopt the structure in an embedded manner. The miniature sensing optical unit has the advantages that sensitivity to external tested information is high, response to temperature and strain is instant, an embedding process is simple, original performances of the optical cable and the electric cable are unchanged, change of temperature can be reflected in real time, a region of an optical fiber 'stress-strain window' is reduced due to small surplus length of the optical fibers in the stainless steel pipe, response sensitivity of the optical fibers to external stress (strain) is improved, and the miniature sensing optical unit can be embedded into a proper portion of the optical cable or the electric cable without changing the original structure and the original performances of the optical cable or the electric cable.
Description
Technical field
The present invention relates to the distributed on-line measurement sensing of optical fiber, particularly relate to the cable of a kind of micro-shape sense light unit and embedded this structure of utilization, optical cable, aerial bare line and extra large cable.
Background technology
Optical fiber sensing technology is is carrier with light, take optical fiber as the New Sensing Technology of medium, perception external information.Utilize the various characteristics of optical fiber, optical fiber can make various kinds of sensors, but it is spot distribution in space, except measurement point is discontinuous, also additionally needs transmission line (optical cable or cable).
Distribution type fiber-optic measures sensor-based system can on the continuous length of whole piece optical fiber, provide the change of information measured with fiber length with the continuous function form of distance, optical fiber used or optical cable are except directly becoming distributed sensing element also simultaneously for the transmission of Detection Information.In recent years, utilize the light unit in communications optical cable or communications optical cable as sensing transfer element distributed fiber-optic sensor technology oneself be widely used in the leakage of oil/gas pipe, the temperature of power transmission cable, occasion such as optical cable warning fence, the detection of dam bridge structure health etc.
Distribution type fiber-optic is measured sensor-based system and is broadly divided into temperature and the large class of strain (stress) two, both wishes that extraneous temperature and strain (stress) are transmitted as soon as possible and be applied on optical fiber.But, structure (the comprising light unit) design premises of all general communication optical cables and cardinal rule are all make optical fiber in cable and external action (temperature, external force, vibration, wet damp environment etc.) especially to being isolate as much as possible external stress, to ensure light signal transmitting under not by the condition of external action.So concerning general communication optical cable, must have one " ess-strain window ", when namely strain occurs optical cable in certain scope, optical fiber is not wherein subject to stress thus does not strain.In order to reach this object, mainly adopt two kinds of methods: first optical fiber is lax in protection tube (light unit), and because communications optical cable inner fiber quantity is more, therefore the size of light unit is larger simultaneously; It two is that the relative protection tube of optical fiber has redundant length (excess fiber length), and in order to meet the needs of ess-strain window, this remaining length should be enough large.Larger light unit size makes the transmission of extraneous physics field information to optical fiber produce comparatively long time delay, and enough large remaining length makes optical fiber insensitive in wider range of strain.So the distributed fiber-optic sensor sensitivity of Bian general communication optical cable or light unit is low, real-time is poor, obviously, using general communication optical cable as distributed sensing with being not optimal.
Summary of the invention
An object of the present invention is to provide a kind of micro-shape sense light unit.
Another object of the present invention is to provide a kind of cable, optical cable, aerial bare line and the extra large cable that use this micro-shape sense light cellular construction.
The technical solution used in the present invention is:
Micro-shape sense light unit, embed inside or the outside of cable, it comprises micro-shape sense light cell body, and described micro-shape sense light cell body comprises sensing optical fiber, described sensing optical fiber is coated with the stainless-steel tube of sealing, is filled with the fine cream that blocks water in described stainless-steel tube; The quantity of described sensing optical fiber is 1 or 2 or many, and more than described stainless-steel tube inner fiber, long scope is: 0≤remaining long < 0.03%.
Described stainless-steel tube is coated with sheath.
A kind of cable utilizing described micro-shape sense light unit to carry out thermometric, described cable comprises conductor core wire and cable jacket, also comprise micro sensing light unit, the stainless-steel tube of described micro-shape sense light unit is coated with sheath, the described stranded inside in cable synchronous with cable core of the micro sensing light unit with sheath or be wound in the outside of cable jacket.
A kind of optical cable utilizing described micro-shape sense light unit to carry out strain sensing, described optical cable comprises duct optical cable and buried cable, described duct optical cable comprises general communication light unit and cable outer sheath, described buried cable comprises general communication light unit, cable armor steel wire and cable outer sheath, also comprise micro sensing light unit, described micro sensing light unit is not with sheath, described micro sensing light unit not with sheath and general communication light units synchronization stranded inner in duct optical cable, between the described micro sensing light unit not with the sheath stranded general communication light unit in buried cable synchronous with cable armor steel wire and cable outer sheath.
A kind of aerial bare line utilizing described micro-shape sense light unit to carry out measuring tempeature and strain sensing, described aerial bare line comprises Optical Fiber composite overhead Ground Wire and optical phase conductor, described Optical Fiber composite overhead Ground Wire comprises general communication light unit and aluminum-clad steel wire, described optical phase conductor comprises general communication light unit, aluminum-clad steel wire and electrician's aluminum or aluminum alloy line, also comprise micro sensing light unit, described micro sensing light unit is not with sheath, described micro sensing light unit not with sheath and the stranded aluminum-clad steel wire in Optical Fiber composite overhead Ground Wire of general communication light units synchronization inner, described micro-shape sense light unit not with sheath and electrician's aluminum or aluminum alloy line locking stranded inner in optical phase conductor.
A kind of extra large cable utilizing described micro-shape sense light unit to carry out measuring tempeature and strain sensing, described extra large cable wrap draws together submarine communication cable and sea floor optoelectronic composite cable, described submarine communication cable comprises general communication light unit and cable armor steel wire, described sea floor optoelectronic composite cable comprises general communication light unit, cable armor steel wire, conductive cable cores and cable jacket, also comprise micro sensing light unit, described micro sensing light unit is not with sheath, described micro sensing light unit not with sheath and general communication light units synchronization stranded inner in submarine communication cable, described micro-shape sense light unit comprises the band micro sensing light unit of sheath and the micro sensing light unit not with sheath, between micro-shape sense light unit stranded general communication light unit in sea floor optoelectronic composite cable synchronous with cable armor steel wire of described band sheath and conductive cable cores, the described micro sensing light unit not with sheath is synchronous with cable armor steel wire stranded in the cable jacket of sea floor optoelectronic composite cable.
Advantage of the present invention is: to external world information measured highly sensitive, to temperature and strain real time reaction and embed technique simply, do not change original optical cable performance, the heat conductivility of stainless steel material is much better than the plastic material of conventional cable light unit, thus can real time reaction temperature variation, excess fiber length less in pipe reduces the region of optical fiber " ess-strain window ", improve optical fiber stress (strain) sensitivity of reacting to external world, micro-shape sense light unit can not change the original stuctures and properties of optical cable and be embedded in the suitable position of optical cable and cable.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the micro-shape sense light cellular construction schematic diagram not with sheath.
Fig. 2 is micro-shape sense light cellular construction schematic diagram of band sheath.
Fig. 3 utilizes micro-shape sense light unit to carry out the construction of cable schematic diagram of inner thermometric.
Fig. 4 utilizes micro-shape sense light unit to carry out the construction of cable schematic diagram of surface temperature measurement.
Fig. 5 utilizes micro-shape sense light unit to carry out the duct optical cable structural representation of strain sensing.
Fig. 6 utilizes micro-shape sense light unit to carry out the buried cable structural representation of strain sensing.
Fig. 7 utilizes micro-shape sense light unit to carry out the Optical Fiber composite overhead Ground Wire structural representation of temperature survey and strain sensing.
Fig. 8 utilizes micro-shape sense light unit to carry out the optical phase conductor structural representation of temperature survey and strain sensing.
Fig. 9 utilizes micro-shape sense light unit to carry out the submarine communication cable structural representation of strain sensing.
Figure 10 utilizes micro-shape sense light unit to carry out the sea floor optoelectronic composite cable structural representation of strain sensing.
Wherein: 1, sensing optical fiber, 2, block water fine cream, 3, stainless-steel tube, 4, sheath, 5, micro-shape sense light unit of band sheath, 6, sense light unit not with sheath, 7, cable conductor heart yearn, 8, cable jacket, 9, general communication light unit, 10, cable armor steel wire, 11, cable outer sheath, 12, aluminum-clad steel wire, 13, electrician's aluminum steel or aluminium alloy wire, 14, conductive cable cores.
Embodiment
Embodiment 1
Micro-shape sense light unit as illustrated in fig. 1 and 2, embed inside or the outside of cable, it comprises micro-shape sense light cell body, and micro-shape sense light cell body comprises sensing optical fiber 1, the Packed stainless-steel tube 3 of sensing optical fiber 1 outer cladding, is filled with the fine cream 2 that blocks water in stainless-steel tube 3; The quantity of sensing optical fiber 1 is 1 or 2 or many, and more than stainless-steel tube 3 inner fiber, long scope is: 0≤remaining long < 0.03%.Stainless-steel tube 3 is outer also can be coated with sheath 4.
Micro-shape sense light unit is manufactured by specialized equipment; it is that the stainless-steel tube 3 of 0.15mm-0.2mm is made through shaping, laser bonding, sizing drawing that the protection tube of micro-shape sense light unit leads to usual thickness; sensing optical fiber 1 and the fine cream 2 that blocks water is inputted while stainless-steel tube 3 is shaping; the quantity of sensing optical fiber 1 is generally 1 ~ 2, also can be many.Sensing optical fiber 1 can be conventional multi-mode or single-mode fiber, also can be other special optical fibers, multifiber is generally of the same type, also can be the mixing of dissimilar optical fiber, excess fiber length in pipe should be less than 0.03%, do not allow negative remaining long, the fine cream 2 that blocks water in pipe has resistance effect, according to different applied environments, the fine cream 2 that blocks water also can have other characteristic individually or simultaneously, as inhaled hydrogen, low temperature resistant, high temperature resistant, the performances such as heat conduction, as required, the sheath 4 of the suitable material such as the PEF of suitable thickness is extruded outside the micro-shape stainless-steel tube 3 sense light unit 1 made.
Embodiment 2
As shown in Figures 3 and 4, the micro-shape sense light unit described in embodiment 1 is utilized to carry out the cable of thermometric, cable comprises cable conductor heart yearn 7 and cable jacket 8, also comprise micro sensing light unit, the stainless-steel tube 3 of micro-shape sense light unit is wrapped with sheath 4, the stranded inside in cable synchronous with cable conductor heart yearn 7 of the micro sensing light unit 5 with sheath or be wound in the outside of cable jacket 8.Because cable has insulating requirements in the present embodiment, the general micro-shape sense light unit 5 adopting band sheath, Fig. 3 is the construction of cable schematic diagram of detection streamer internal temperature, sense light unit 5 with sheath can be 1 or many, is that the sense light unit 5 of 3 band sheaths is synchronous with cable core stranded in Fig. 3.Fig. 4 is the construction of cable schematic diagram of detection streamer hull-skin temperature, and the sense light unit 5 of band sheath can be 1 or many, is 1 outside of being with the sense light unit 5 of sheath to be wound in cable jacket 8 in Fig. 4.
Embodiment 3
As shown in Figure 5, the micro-shape sense light unit described in embodiment 1 is utilized to carry out the duct optical cable of strain sensing, duct optical cable comprises general communication light unit 9 and cable outer sheath 11, also comprise micro sensing light unit, micro sensing light unit is not with sheath, and the micro sensing light unit 6 not with sheath is synchronous with general communication light unit 9 stranded inner in duct optical cable.The external diameter of micro-shape sense light unit 6 not with sheath and the clearance fit of general communication light unit 9, the circular trace making it to form with general communication light unit 9 is tangent.
As shown in Figure 6, the micro-shape sense light unit described in embodiment 1 is utilized to carry out the buried cable of strain sensing, buried cable comprises general communication light unit 9, cable armor steel wire 10 and cable outer sheath 11, also comprise micro sensing light unit, micro sensing light unit is not with sheath, between the stranded general communication light unit 9 in buried cable synchronous with cable armor steel wire 10 of the micro sensing light unit 6 not with sheath and cable outer sheath 11.Cable armor steel wire 10 is between cable outer sheath 11 and general communication are with light unit 9, the external diameter of the micro-shape sense light unit 6 not with sheath should be the minus tolerance in cable armor steel wire 10 nominal footpath, should control the laying tension of micro-shape sense light unit in process of production.
Embodiment 4
As shown in Figure 7, the micro-shape sense light unit described in embodiment 1 is utilized to carry out the Optical Fiber composite overhead Ground Wire of measuring tempeature and strain sensing, Optical Fiber composite overhead Ground Wire comprises general communication light unit 9 and aluminum-clad steel wire 12, also comprise micro sensing light unit, micro sensing light unit is not with sheath, and the stranded aluminum-clad steel wire 12 in Optical Fiber composite overhead Ground Wire synchronous with general communication light unit 9 of the micro sensing light unit 6 not with sheath is inner.
As shown in Figure 8, the micro-shape sense light unit described in embodiment 1 is utilized to carry out the optical phase conductor of measuring tempeature and strain sensing, optical phase conductor comprises general communication light unit 9, aluminum-clad steel wire 12 and electrician's aluminum steel or aluminium alloy wire 13, also comprise micro sensing light unit, micro sensing light unit is not with sheath, and the micro-shape sense light unit 6 not with sheath is synchronous with electrician's aluminum steel or aluminium alloy wire 13 stranded inner in optical phase conductor.
Optical phase conductor shown in Optical Fiber composite overhead Ground Wire shown in Fig. 7 and Fig. 8 is two kinds of aerial bare line, aerial bare line comprises steel-cored aluminium strand, aluminium alloy stranded conductor, Optical Fiber composite overhead Ground Wire, optical phase conductor etc. all twist twisted wire into feature with one heart with round metal line, their twisted wire structure resemble, for multi-layer twisted structure, micro-shape sense light unit can embed different twisted layer, but its external diameter should with same layer single metal wire clearance fit, the circular trace making it to form with same layer single metal wire is tangent, the laying tension of micro-shape sense light unit should be controlled in process of production.
Embodiment 5
As shown in Figure 9, the micro-shape sense light unit described in embodiment 1 is utilized to carry out the submarine communication cable of measuring tempeature and strain sensing, submarine communication cable comprises general communication light unit 9 and cable armor steel wire 10, also comprise micro sensing light unit, micro sensing light unit is not with sheath, and the micro-shape sense light unit 6 not with sheath is synchronous with cable armor steel wire 10 stranded inner in submarine communication cable.
As shown in Figure 10, the micro-shape sense light unit described in embodiment 1 is utilized to carry out the sea floor optoelectronic composite cable of measuring tempeature and strain sensing, sea floor optoelectronic composite cable comprises general communication light unit 9, cable armor steel wire 10, conductive cable cores 14 and cable jacket 8, also comprise micro sensing light unit, micro-shape sense light unit comprises the band micro sensing light unit 5 of sheath and the micro sensing light unit 6 not with sheath, micro-shape sense light unit 5 with sheath is synchronously between the stranded general communication light unit 9 in sea floor optoelectronic composite cable and conductive cable cores 14, micro sensing light unit 6 not with sheath is synchronous with cable armor steel wire 10 stranded in the cable jacket 8 of sea floor optoelectronic composite cable.
Sea cable mainly comprises submarine communication cable and the large class of sea floor optoelectronic composite cable two, and except cable core, cable armor steel wire 10 has individual layer armouring and the pattern such as bilayer and multilayer armouring.
The present invention embeds micro-shape sense light cellular construction of embodiment 1 under the prerequisite not changing the original performance of cable, improve optical fiber to external world stress (strain) react sensitivity, to temperature and strain real time reaction, the present invention is unrestricted to optical fiber model, and the optical fiber of all models is all applicable to structure of the present invention.The present invention is not limited to above-described embodiment using micro-shape sense light cellular construction of embodiment 1 as cable arrangement ingredient, and other cables that the present embodiment is not enumerated or cable configuration still belong to protection scope of the present invention.
Claims (1)
1. one kind utilizes micro-shape sense light unit to carry out the extra large cable of measuring tempeature and strain sensing, described micro-shape sense light unit embeds inside or the outside of cable, described micro-shape sense light unit comprises micro-shape sense light cell body, described micro-shape sense light cell body comprises sensing optical fiber, described sensing optical fiber is coated with the stainless-steel tube of sealing, is filled with the fine cream that blocks water in described stainless-steel tube, the quantity of described sensing optical fiber is 1 or 2 or many, more than described stainless-steel tube inner fiber, long scope is: 0≤remaining long < 0.03%, described stainless-steel tube is coated with sheath, described extra large cable wrap draws together submarine communication cable and sea floor optoelectronic composite cable, described submarine communication cable comprises general communication light unit and cable armor steel wire, described sea floor optoelectronic composite cable comprises general communication light unit, cable armor steel wire, conductive cable cores and cable jacket, it is characterized in that: described micro-shape sense light unit comprises band micro-shape sense light unit of sheath and the micro-shape sense light unit not with sheath, between micro-shape sense light unit stranded general communication light unit in sea floor optoelectronic composite cable synchronous with cable armor steel wire of described band sheath and conductive cable cores, described micro-shape sense light unit not with sheath is synchronous with cable armor steel wire stranded in the cable jacket of sea floor optoelectronic composite cable.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010545920.3A CN102012285B (en) | 2010-11-16 | 2010-11-16 | Micro-sensing optical unit and embedded application thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010545920.3A Division CN102012285B (en) | 2010-11-16 | 2010-11-16 | Micro-sensing optical unit and embedded application thereof |
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| CN102636848A CN102636848A (en) | 2012-08-15 |
| CN102636848B true CN102636848B (en) | 2015-07-15 |
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| CN201010545920.3A Active CN102012285B (en) | 2010-11-16 | 2010-11-16 | Micro-sensing optical unit and embedded application thereof |
| CN201210083940.2A Active CN102636848B (en) | 2010-11-16 | 2010-11-16 | Submarine cable for measuring temperature and sensing strain by aid of miniature sensing optical unit |
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| CN101833153A (en) * | 2010-05-04 | 2010-09-15 | 浙江中天电线电缆有限公司 | Improved local area network optical cable |
| CN102967390B (en) * | 2010-11-16 | 2014-11-26 | 江苏通光光电子有限公司 | Temperature measuring and strain sensing aerial bare line by using micro sensing optical unit |
| CN102012285B (en) * | 2010-11-16 | 2013-09-04 | 江苏通光光电子有限公司 | Micro-sensing optical unit and embedded application thereof |
| CN201917416U (en) * | 2010-11-16 | 2011-08-03 | 江苏通光光电子有限公司 | Micro light transmitting and sensing unit and embedded application product thereof |
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| CN2653526Y (en) * | 2003-09-27 | 2004-11-03 | 江苏永鼎股份有限公司 | Central beam tube type micro optic cable |
| CN200983023Y (en) * | 2006-12-07 | 2007-11-28 | 宁波振东光电有限公司 | An optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102636848A (en) | 2012-08-15 |
| CN102012285A (en) | 2011-04-13 |
| CN102012285B (en) | 2013-09-04 |
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