CN201917416U - Micro light transmitting and sensing unit and embedded application product thereof - Google Patents
Micro light transmitting and sensing unit and embedded application product thereof Download PDFInfo
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- CN201917416U CN201917416U CN201020608975XU CN201020608975U CN201917416U CN 201917416 U CN201917416 U CN 201917416U CN 201020608975X U CN201020608975X U CN 201020608975XU CN 201020608975 U CN201020608975 U CN 201020608975U CN 201917416 U CN201917416 U CN 201917416U
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Abstract
The utility model relates to a micro light transmitting and sensing unit which is embedded inside or outside a cable. The micro light transmitting and sensing unit comprises a micro light transmitting and sensing unit body. The micro light transmitting and sensing unit is characterized in that the micro light transmitting and sensing unit body comprises a sensing fiber; a sealed stainless steel pipe wraps the sensing fiber and is filled with water-retaining fiber paste; one, two or a plurality of sensing fibers are arranged; and the range of the remaining length of the fibers in the stainless steel pipe is larger than or equals to 0 and smaller than 0.03 percent. The utility model also relates to an electric cable, an optical cable, an aerial bare line and an undersea cable applying the micro light transmitting and sensing unit in an embedding way. The utility model has high sensitivity to detected information outside, reacts to temperature and strain in real time, has simple embedding process, does not change the original performance of an optical cable, and can react to temperature change in real time; the fibers with smaller remaining length in the pipe shorten the area of a stress straining window of the fibers, and the sensitivity of the fibers in reaction to outside stress (strain) is improved; and the micro light transmitting and sensing unit does not change the original structure and performance of the optical cable, and is embedded in an appropriate part of the optical cable.
Description
Technical field
The utility model relates to the distributed on-line measurement sensing of optical fiber, relates in particular to cable, optical cable, aerial bare line and the extra large cable of a kind of little shape sense light unit and this structure of utilization.
Background technology
Optical fiber sensing technology is is carrier with light, be the novel sensing technology of medium, perception external information with optical fiber.Utilize the various characteristics of optical fiber, optical fiber can be made various kinds of sensors, but it is a spot distribution in the space, except measurement point is discontinuous, also additionally needs transmission line (optical cable or cable).
Distribution type fiber-optic is measured sensor-based system can be on the continuous length of whole piece optical fiber, provide the variation of information measured with fiber length with the continuous function of distance form, used optical fiber or optical cable also are used to detect transmission of Information simultaneously except directly becoming the distributed sensing element.In recent years, oneself is widely used in the occasions such as temperature, optical cable warning fence, dam bridge structure health detection of leakage, the transmission of electricity cable of oil/gas pipe as the optical fiber distributed type sensing technology of sensing transfer element to utilize light unit in communications optical cable or the communications optical cable.
Distribution type fiber-optic is measured sensor-based system and is broadly divided into temperature and strain (stress) two big classes, and the both wishes that the temperature and the strain (stress) in the external world transmit as soon as possible and affact on the optical fiber.Yet, the structure of all general communication optical cables (comprising the light unit) design premises and cardinal rule all are to make interior optical fiber of cable and external action (temperature, external force, vibration, wet damp environment etc.) especially to being that external stress is isolated as much as possible, to guarantee light signal reliable transmission under the condition that is not subjected to external action.So, concerning the general communication optical cable, one " ess-strain window " must be arranged, when promptly optical cable in certain scope strain takes place, thereby optical fiber wherein is not subjected to stress strain does not take place.In order to reach this purpose, mainly adopt two kinds of methods simultaneously: first optical fiber relaxes in protection tube (light unit), because of communications optical cable inner fiber quantity more, so the size of light unit is bigger; It two is that the relative protection tube of optical fiber has redundant length (excess fiber length), and in order to satisfy the needs of ess-strain window, this surplus length should be enough big.Bigger light unit size makes extraneous physics field information produce than long time delay the transmission of optical fiber, and enough big surplus length makes optical fiber insensitive in the range of strain of broad.So Bian is low with the optical fiber distributed type sensing technology sensitivity of general communication optical cable or light unit, real-time is relatively poor, obviously, the general communication optical cable as distributed sensing with being not optimal.
The utility model content
A purpose of the present utility model provides a kind of little shape sense light unit.
Another purpose of the present utility model provides a kind of cable, optical cable, aerial bare line and extra large cable that uses this little shape sense light cellular construction.
The technical solution adopted in the utility model is:
Little shape sense light unit, embed the inside or the outside of cable, it comprises little shape sense light cell body, and described little shape sense light cell body comprises sensing optical fiber, described sensing is coated with the stainless-steel tube of sealing with optical fiber, is filled with the fine cream that blocks water in the described stainless-steel tube; Described sensing is 1 or 2 or many with the quantity of optical fiber, and the surplus long scope of described stainless-steel tube inner fiber is: 0≤surplus length＜0.03%.
Described stainless-steel tube is coated with sheath.
A kind of cable that utilizes described little 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 little shape sense light unit is coated with sheath, described micro sensing light unit that has a sheath and cable core synchronously stranded in cable inside or be wound in the outside of cable jacket.
A kind of optical cable that utilizes described little 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, sheath is not with in described micro sensing light unit, described not stranded in duct optical cable inside, described synchronously stranded between the general communication usefulness light unit and cable outer sheath of buried cable with the micro sensing light unit and the cable armor steel wire of sheath with the micro sensing light unit and the general communication usefulness light units synchronization of sheath.
A kind of aerial bare line that utilizes described little shape sense light unit to measure temperature and strain sensing, described aerial bare line comprises Optical Fiber composite overhead Ground Wire and the built on stilts phase line of Optical Fiber Composite, described Optical Fiber composite overhead Ground Wire comprises general communication light unit and aluminum-clad steel wire, the built on stilts phase line of described Optical Fiber Composite comprises general communication light unit, aluminum-clad steel wire and electrician's aluminum or aluminum alloy line, also comprise micro sensing light unit, sheath is not with in described micro sensing light unit, described not stranded with the light units synchronization, described not stranded in the built on stilts phase line inside of Optical Fiber Composite with little shape sense light unit and electrician's aluminum or aluminum alloy line locking of sheath in the aluminum-clad steel wire inside of Optical Fiber composite overhead Ground Wire with the micro sensing light unit and the general communication of sheath.
A kind of extra large cable that utilizes described little shape sense light unit to measure temperature and strain sensing, described extra large cable wrap is drawn 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, the cable armor steel wire, cable conduction core and cable jacket, also comprise micro sensing light unit, sheath is not with in described micro sensing light unit, and is described not stranded in submarine communication cable inside with the light units synchronization with the micro sensing light unit and the general communication of sheath; Described little shape sense light unit comprises the micro sensing light unit of being with sheath and not with the micro sensing light unit of sheath, the synchronously stranded general communication in sea floor optoelectronic composite cable of little shape sense light unit of described band sheath and cable armor steel wire is used between light unit and the cable conduction core, and is described synchronously not stranded in the cable jacket of sea floor optoelectronic composite cable with the micro sensing light unit and the cable armor steel wire of sheath.
The utility model has the advantages that: to external world information measured highly sensitive, to temperature and strain real time reaction and embed technology and simply, do not change original optical cable performance, the heat conductivility of stainless steel material is much better than the plastic material of conventional optical fiber cables unit, thereby can the real time reaction temperature variation, less excess fiber length has dwindled the zone of optical fiber " ess-strain window " in the pipe, improved the optical fiber sensitivity of stress (strain) reaction to external world, little shape sense light unit can not change the original structure of optical cable and performance and be embedded in the suitable position of optical cable and cable.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is little shape sense light cellular construction synoptic diagram of not being with sheath.
Fig. 2 is little shape sense light cellular construction synoptic diagram of band sheath.
Fig. 3 utilizes little shape sense light unit to carry out the construction of cable synoptic diagram of inner thermometric.
Fig. 4 utilizes little shape sense light unit to carry out the construction of cable synoptic diagram of surface temperature measurement.
Fig. 5 utilizes little shape sense light unit to carry out the duct optical cable structural representation of strain sensing.
Fig. 6 utilizes little shape sense light unit to carry out the buried cable structural representation of strain sensing.
Fig. 7 utilizes little 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 little shape sense light unit to carry out the built on stilts phase line structural representation of Optical Fiber Composite of temperature survey and strain sensing.
Fig. 9 utilizes little shape sense light unit to carry out the submarine communication cable structural representation of strain sensing.
Figure 10 utilizes little shape sense light unit to carry out the sea floor optoelectronic composite cable structural representation of strain sensing.
Wherein: 1, sensing optical fiber, 2, the fine cream that blocks water, 3, stainless-steel tube, 4, sheath, 5, little shape sense light unit of band sheath, 6, not with the sense light unit of sheath, 7, cable conductor heart yearn, 8, cable jacket, 9, general communication light unit, 10, the cable armor steel wire, 11, cable outer sheath, 12, aluminum-clad steel wire, 13, electrician's aluminum steel or aluminium alloy wire, 14, the cable conduction core.
Embodiment
Embodiment 1
Little shape sense light unit as illustrated in fig. 1 and 2, embed the inside or the outside of cable, it comprises little shape sense light cell body, and little shape sense light cell body comprises sensing optical fiber 1, sensing is coated with the stainless-steel tube 3 of sealing with optical fiber 1, is filled with the fine cream 2 that blocks water in the stainless-steel tube 3; Sensing is 1 or 2 or many with the quantity of optical fiber 1, and the surplus long scope of stainless-steel tube 3 inner fibers is: 0≤surplus length＜0.03%.Also can be coated with sheath 4 outside the stainless-steel tube 3.
Little shape sense light unit is by the specialized equipment manufacturing; the protection tube of little shape sense light unit is that the stainless-steel tube 3 of 0.15mm-0.2mm is made through moulding, laser bonding, sizing drawing with thickness usually; in stainless-steel tube 3 moulding the input sensing with optical fiber 1 with block water fine cream 2; sensing is generally 1～2 with the quantity of optical fiber 1, also can be many.Sensing can be conventional multimode or single-mode fiber with optical fiber 1; also can be other special optical fibers; multifiber generally is of the same type; it also can be the mixing of dissimilar optical fiber; excess fiber length in the pipe should be less than 0.03%; do not allow negative surplus length; the fine cream 2 that blocks water in the pipe has resistance effect; according to different applied environments; the fine cream 2 that blocks water also can have the other characteristic individually or simultaneously; as inhale hydrogen; low temperature resistant; high temperature resistant; performances such as heat conduction as required, extrude the sheath 4 of the suitable material such as PEF of suitable thickness outside little shape stainless-steel tube 3 sense light unit 1 of making.
Shown in Fig. 3 and 4, utilize embodiment 1 described little shape sense light unit 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 little shape sense light unit is wrapped with sheath 4, the micro sensing light unit 5 that has a sheath and cable conductor heart yearn 7 synchronously stranded in cable inside or be wound in the outside of cable jacket 8.Owing to cable insulating requirements is arranged in the present embodiment, the general little shape sense light unit 5 that adopts the band sheath, Fig. 3 is the construction of cable synoptic diagram of detection streamer internal temperature, the sense light unit 5 of band sheath can be 1 or many, is that the sense light unit 5 of 3 band sheaths is stranded synchronously with cable core among Fig. 3.Fig. 4 is the construction of cable synoptic diagram of detection streamer hull-skin temperature, and the sense light unit 5 of band sheath can be 1 or many, is that the sense light unit 5 of 1 band sheath is wound in the outside of cable jacket 8 among Fig. 4.
As shown in Figure 5, utilize embodiment 1 described little shape sense light unit 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, sheath is not with in micro sensing light unit, and is synchronously not stranded in duct optical cable inside with light unit 9 with general communication with the micro sensing light unit 6 of sheath.Not with the external diameter of little shape sense light unit 6 of sheath and the clearance fit of general communication light unit 9, it is tangent to make it the circular trace formed with general communication light unit 9.
As shown in Figure 6, utilize embodiment 1 described little shape sense light unit 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, sheath is not with in micro sensing light unit, does not use between light unit 9 and the cable outer sheath 11 with the micro sensing light unit 6 and the cable armor steel wire 10 synchronously stranded general communications in buried cable of sheath.Cable armor steel wire 10 is used between the light unit 9 at cable outer sheath 11 and general communication, the external diameter with little shape sense light unit 6 of sheath should not be the minus tolerances in cable armor steel wire 10 nominals footpath, should control the laying tension of little shape sense light unit in process of production.
As shown in Figure 7, utilize embodiment 1 described little shape sense light unit to measure the Optical Fiber composite overhead Ground Wire of temperature 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, sheath is not with in micro sensing light unit, and is synchronously not stranded in aluminum-clad steel wire 12 inside of Optical Fiber composite overhead Ground Wire with light unit 9 with general communication with the micro sensing light unit 6 of sheath.
As shown in Figure 8, utilize embodiment 1 described little shape sense light unit to measure the built on stilts phase line of Optical Fiber Composite of temperature and strain sensing, the built on stilts phase line of Optical Fiber Composite 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, sheath is not with in micro sensing light unit, and is synchronously not stranded in the built on stilts phase line inside of Optical Fiber Composite with electrician's aluminum steel or aluminium alloy wire 13 with little shape sense light unit 6 of sheath.
The built on stilts phase line of Optical Fiber composite overhead Ground Wire shown in Figure 7 and Optical Fiber Composite shown in Figure 8 is two kinds of aerial bare line, aerial bare line is to comprise steel-cored aluminium strand, aluminium alloy stranded conductor, Optical Fiber composite overhead Ground Wire, all are the twisted wire of feature with the concentric strand of round metal line for the built on stilts phase lines of Optical Fiber Composite etc., their twisted wire structure is identical, for many strand layer structures, little shape sense light unit can embed different strand layers, but its external diameter should with a layer metal single line clearance fit, make it tangent, should control the laying tension of little shape sense light unit in process of production with the circular trace of forming with layer metal single line.
As shown in Figure 9, utilize embodiment 1 described little shape sense light unit to measure the submarine communication cable of temperature and strain sensing, submarine communication cable comprises general communication light unit 9 and cable armor steel wire 10, also comprise micro sensing light unit, sheath is not with in micro sensing light unit, and is synchronously not stranded in submarine communication cable inside with light unit 9 with general communication with the micro sensing light unit 6 of sheath.
As shown in figure 10, utilize embodiment 1 described little shape sense light unit to measure the sea floor optoelectronic composite cable of temperature and strain sensing, sea floor optoelectronic composite cable comprises general communication light unit 9, cable armor steel wire 10, cable conduction core 14 and cable jacket 8, also comprise micro sensing light unit, little shape sense light unit comprises the micro sensing light unit 5 of being with sheath and not with the micro sensing light unit 6 of sheath, little shape sense light unit 5 of band sheath and cable armor steel wire 10 synchronously stranded general communications in sea floor optoelectronic composite cable are used between light unit 9 and the cable conduction core 14, and are synchronously not stranded in the cable jacket 8 of sea floor optoelectronic composite cable with cable armor steel wire 10 with the micro sensing light unit 6 of sheath.
The sea cable mainly comprises submarine communication cable and sea floor optoelectronic composite cable two big classes, and except cable core, cable armor steel wire 10 has individual layer armouring and patterns such as bilayer and multilayer armouring.
The utility model embeds little shape sense light cellular construction of embodiment 1 under the prerequisite that does not change the original performance of cable, improved optical fiber to external world stress (strain) reaction sensitivity, to temperature and strain real time reaction, the utility model is unrestricted to the optical fiber model, and the optical fiber of all models all is applicable to structure of the present utility model.The utility model is with little shape sense light cellular construction of embodiment 1 the foregoing description that is not limited to as the cable arrangement ingredient, and other cables or cable configuration that present embodiment is not enumerated still belong to protection domain of the present utility model.
Claims (6)
1. little shape sense light unit, embed the inside or the outside of cable, it comprises little shape sense light cell body, it is characterized in that: described little shape sense light cell body comprises sensing optical fiber, described sensing is coated with the stainless-steel tube of sealing with optical fiber, is filled with the fine cream that blocks water in the described stainless-steel tube; Described sensing is 1 or 2 or many with the quantity of optical fiber, and the surplus long scope of described stainless-steel tube inner fiber is: 0≤surplus length＜0.03%.
2. little shape sense light according to claim 1 unit, it is characterized in that: described stainless-steel tube is coated with sheath.
3. cable that utilizes aforesaid right requirement 1 or 2 described little shape sense light unit to carry out thermometric, described cable comprises conductor core wire and cable jacket, it is characterized in that: also comprise micro sensing light unit, the stainless-steel tube of described little shape sense light unit is coated with sheath, described micro sensing light unit that has a sheath and cable core synchronously stranded in cable inside or be wound in the outside of cable jacket.
4. optical cable that utilizes aforesaid right requirement 1 or 2 described little 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, it is characterized in that: also comprise micro sensing light unit, sheath is not with in described micro sensing light unit, described not stranded in duct optical cable inside, described synchronously stranded between the general communication usefulness light unit and cable outer sheath of buried cable with the micro sensing light unit and the cable armor steel wire of sheath with the micro sensing light unit and the general communication usefulness light units synchronization of sheath.
5. aerial bare line that utilizes aforesaid right requirement 1 or 2 described little shape sense light unit to measure temperature and strain sensing, described aerial bare line comprises Optical Fiber composite overhead Ground Wire and the built on stilts phase line of Optical Fiber Composite, described Optical Fiber composite overhead Ground Wire comprises general communication light unit and aluminum-clad steel wire, the built on stilts phase line of described Optical Fiber Composite comprises general communication light unit, aluminum-clad steel wire and electrician's aluminum or aluminum alloy line, it is characterized in that: also comprise micro sensing light unit, sheath is not with in described micro sensing light unit, described not stranded with the light units synchronization, described not stranded in the built on stilts phase line inside of Optical Fiber Composite with little shape sense light unit and electrician's aluminum or aluminum alloy line locking of sheath in the aluminum-clad steel wire inside of Optical Fiber composite overhead Ground Wire with the micro sensing light unit and the general communication of sheath.
6. extra large cable that utilizes aforesaid right requirement 1 or 2 described little shape sense light unit to measure temperature and strain sensing, described extra large cable wrap is drawn 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, the cable armor steel wire, cable conduction core and cable jacket, it is characterized in that: also comprise micro sensing light unit, sheath is not with in described micro sensing light unit, and is described not stranded in submarine communication cable inside with the light units synchronization with the micro sensing light unit and the general communication of sheath; Described little shape sense light unit comprises the micro sensing light unit of being with sheath and not with the micro sensing light unit of sheath, the synchronously stranded general communication in sea floor optoelectronic composite cable of little shape sense light unit of described band sheath and cable armor steel wire is used between light unit and the cable conduction core, and is described synchronously not stranded in the cable jacket of sea floor optoelectronic composite cable with the micro sensing light unit and the cable armor steel wire of sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020608975XU CN201917416U (en) | 2010-11-16 | 2010-11-16 | Micro light transmitting and sensing unit and embedded application product thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020608975XU CN201917416U (en) | 2010-11-16 | 2010-11-16 | Micro light transmitting and sensing unit and embedded application product thereof |
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| Publication Number | Publication Date |
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| CN201917416U true CN201917416U (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020608975XU Expired - Lifetime CN201917416U (en) | 2010-11-16 | 2010-11-16 | Micro light transmitting and sensing unit and embedded application product thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012285A (en) * | 2010-11-16 | 2011-04-13 | 江苏通光光电子有限公司 | Micro-sensing optical unit and embedded application thereof |
| CN103149650A (en) * | 2011-12-07 | 2013-06-12 | 上海电缆研究所 | Underwater special type wire cable and optical unit structure thereof |
| CN103257417A (en) * | 2012-02-17 | 2013-08-21 | 江苏藤仓亨通光电有限公司 | Method for producing stainless steel casing optical fiber unit of optical fiber composition phase conductor |
-
2010
- 2010-11-16 CN CN201020608975XU patent/CN201917416U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012285A (en) * | 2010-11-16 | 2011-04-13 | 江苏通光光电子有限公司 | Micro-sensing optical unit and embedded application thereof |
| CN103149650A (en) * | 2011-12-07 | 2013-06-12 | 上海电缆研究所 | Underwater special type wire cable and optical unit structure thereof |
| CN103257417A (en) * | 2012-02-17 | 2013-08-21 | 江苏藤仓亨通光电有限公司 | Method for producing stainless steel casing optical fiber unit of optical fiber composition phase conductor |
| CN103257417B (en) * | 2012-02-17 | 2015-04-22 | 江苏藤仓亨通光电有限公司 | Method for producing stainless steel casing optical fiber unit of optical fiber composition phase conductor |
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Granted publication date: 20110803 Effective date of abandoning: 20130904 |
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| AV01 | Patent right actively abandoned |
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| RGAV | Abandon patent right to avoid regrant |