CN201075145Y - Strain sensing optical cable - Google Patents
Strain sensing optical cable Download PDFInfo
- Publication number
- CN201075145Y CN201075145Y CNU2007200737969U CN200720073796U CN201075145Y CN 201075145 Y CN201075145 Y CN 201075145Y CN U2007200737969 U CNU2007200737969 U CN U2007200737969U CN 200720073796 U CN200720073796 U CN 200720073796U CN 201075145 Y CN201075145 Y CN 201075145Y
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- CN
- China
- Prior art keywords
- sensing optical
- optical cable
- sensor fibre
- protection sleeve
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a strain sensing optical cable, comprising a sensing optical fiber and a protection sleeve. The utility model is characterized in that stiffeners which are arranged and extended in parallel are arranged around the sensing optical fiber and in the protection sleeve. The stiffeners are tangent to the sensing optical fiber round and have the quantity of six; an aluminium-plastic composite belt and an external protection sleeve which are attached to each other are sequentially arranged outside the protection sleeve. The utility model has the advantages that the stiffeners are arranged around the sensing optical fiber of the sensing optical cable and the aluminium-plastic composite belt and the external protection sleeve are arranged outside the protection sleeve, thus the protection performance of the sensing optical cable is greatly increased, the damages to the sensing optical fiber when the sensing optical cable is paved or applied are avoided, the utility model can be applied in severe environmental conditions, thus the service life is greatly prolonged, the application stability is strong and the sensing sensitiveness is ensured.
Description
Technical field
The utility model belongs to the light field of sensing technologies, relates to a kind of sensing optic cable that can be used as the distributed strain senser element.
Background technology
Light in the sensor fibre is subjected to the influence of external environment in transmission course, as temperature, strain etc., cause transmitting light wave amounts such as light intensity, phase place, frequency, polarization state and change.Can obtain corresponding physical quantity by the variation of monitoring this tittle.Sensor fibre is owing to adopt light signal, intrinsic safety, and anti-fully electromagnetic interference (EMI) has characteristics such as long-distance sensing, sensitivity height continuously again, so in field widespread uses such as oil, chemical industry, buildings.Particularly need the occasion of early warning owing to topography and geomorphology variation or physical construction variation in inflammable and explosive occasion and some.As the distortion of petroleum pipe line or leakage monitoring, the monitoring structural health conditions of bridge dam, safety monitoring that the boundary is enclosed on the airport etc.
Existing sensor fibre only applies layer protecting film at its outside surface, not only is difficult to lay, and suffers damage easily when laying and use; the self-protection poor performance; be not suitable for working under harsh conditions and environment, Acceptable life is short, and the cost that lays is also higher relatively.By measuring the occasion that dependent variable is reaching the monitoring purpose, because that sensor fibre often need be imbedded is underground, and regular meeting has water to infiltrate, and common sensor fibre water resistance can not meet the demands.
The utility model content
The purpose of this utility model is: at the deficiency that above-mentioned prior art exists, provide a kind of and be convenient to lay, the self-protection performance is strong, the straining sensing optical cable of long service life and sensing sensitivity.
For achieving the above object, the technical scheme that adopts is: a kind of straining sensing optical cable, comprise sensor fibre, sheath, it is characterized in that in described sheath, be provided with the reinforcement that is arranged in parallel and extends with sensor fibre around the sensor fibre, described sheath is equipped with aluminium-plastic tape, the oversheath that fits tightly mutually successively outward.
Described sensor fibre is the sensor fibre of filming, or is tight cover sensor fibre.
Reinforcement and the circumscribed applying of sensor fibre circle, quantity is the six roots of sensation, material is a fiberglass.
Described sheath and oversheath are by plastic productions such as tygon, Polyvinylchloride.
The beneficial effects of the utility model are: be equipped with the reinforcement that is arranged in parallel and extends with sensor fibre around the sensor fibre of sensing optic cable, sheath is provided with aluminium-plastic tape and oversheath outward, the sensing optic cable barrier propterty is increased greatly, avoided when laying and use damage to sensor fibre, can under the harsh conditions environment, use, improved serviceable life greatly, stability in use is strong, has guaranteed sensing sensitivity.
Description of drawings
Fig. 1 is the utility model radial structure synoptic diagram.
Among the figure, the 1-sensor fibre; 2-fiberglass reinforcement; The 3-sheath; The 4-aluminium-plastic tape; The 5-oversheath.
Embodiment
Fig. 1 has provided the utility model radial structure synoptic diagram, and a kind of straining sensing optical cable comprises sensor fibre 1, and sheath 3 is characterized in that in described sheath 3, is provided with the reinforcement 2 that is arranged in parallel and extends with sensor fibre 1 around the sensor fibre 1.Described sheath 3 outer aluminium-plastic tape 4 and the oversheaths 5 that fit tightly mutually that are equipped with successively.
The six roots of sensation and the circumscribed fiberglass reinforcement 2 of sensor fibre 1 circle around sensor fibre 1, have closely been arranged; And between described sheath 3 and oversheath 5, be equipped with aluminium-plastic tape 4, and make the protective action of sensing optic cable further strengthen, avoided when laying and use the damage of sensor fibre has been prolonged the serviceable life of sensing optic cable.
Make sheath 3 and oversheath 5 by plastics such as tygon or Polyvinylchloride, though to a certain extent can waterproof, protection against the tide, but the long-time use of plastic material may be worn out, be chapped, the material ageing of oversheath 5, be full of cracks, may cause moisture content to corrode inner sensor fibre 1, thereby make measurement result unreliable.Aluminium-plastic tape 4 protective layers that are equipped with outside sheath 3 help overcoming this shortcoming.
Claims (4)
1. straining sensing optical cable, comprise sensor fibre (1), sheath (3), it is characterized in that: in described sheath (3), sensor fibre (1) is provided with the reinforcement (2) that is arranged in parallel and extends on every side, outer aluminium-plastic tape (4), the oversheath (5) that fits tightly mutually that be equipped with successively of described sheath (3).
2. according to claim 1 straining sensing optical cable, it is characterized in that: described sensor fibre (1) is the sensor fibre of filming, or is tight cover sensor fibre.
3. according to claim 1 straining sensing optical cable, it is characterized in that: described reinforcement (2) is circumscribed with described sensor fibre (1) circle, and quantity is the six roots of sensation.
4. according to claim 1 straining sensing optical cable, it is characterized in that: described reinforcement (2) material is a fiberglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200737969U CN201075145Y (en) | 2007-08-17 | 2007-08-17 | Strain sensing optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200737969U CN201075145Y (en) | 2007-08-17 | 2007-08-17 | Strain sensing optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201075145Y true CN201075145Y (en) | 2008-06-18 |
Family
ID=39520404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200737969U Expired - Fee Related CN201075145Y (en) | 2007-08-17 | 2007-08-17 | Strain sensing optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201075145Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397904B (en) * | 2008-11-05 | 2012-08-29 | 大庆油田有限责任公司 | Method for monitoring downhole casing strain by using optical fibre sensor |
| CN108020894A (en) * | 2018-01-24 | 2018-05-11 | 苏州专创光电科技有限公司 | A kind of stress optical cable with infiltration monitoring function |
-
2007
- 2007-08-17 CN CNU2007200737969U patent/CN201075145Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397904B (en) * | 2008-11-05 | 2012-08-29 | 大庆油田有限责任公司 | Method for monitoring downhole casing strain by using optical fibre sensor |
| CN108020894A (en) * | 2018-01-24 | 2018-05-11 | 苏州专创光电科技有限公司 | A kind of stress optical cable with infiltration monitoring function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 Termination date: 20090917 |