CN205428116U - A fiber optic temperature sensing fire detection system for highway tunnel - Google Patents
A fiber optic temperature sensing fire detection system for highway tunnel Download PDFInfo
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- CN205428116U CN205428116U CN201620226314.8U CN201620226314U CN205428116U CN 205428116 U CN205428116 U CN 205428116U CN 201620226314 U CN201620226314 U CN 201620226314U CN 205428116 U CN205428116 U CN 205428116U
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- optical fiber
- vcehicular tunnel
- cable
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- detecting system
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Abstract
The utility model relates to a fire detection system belongs to the fire -fighting equipment field, concretely relates to a fiber optic temperature sensing fire detection system for highway tunnel. Include: be located the cable wire on highway tunnel top, be fixed in fiber grating thermal detector on the cable wire, wherein: fiber grating thermal detector passes through the transmission cable and links to each other with signal processor. Therefore, the utility model has the advantages of as follows: 1. Reasonable in design, simple structure, with low costs and complete practicality, 2. Short response time it is high to detect the precision, and does not receive the influence of monitoring range length, 3. Measuring result have good repeatability, long term stability is good.
Description
Technical field
This utility model relates to a kind of fire detecting system, belongs to fire-fighting equipment field, is specifically related to a kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel.
Background technology
The most perfect along with China's basis means of transportation, increasing vcehicular tunnel builds up and puts into effect, and tunnel operation security is related to the person and property safety, is increasingly subject to pay attention to, the longest vcehicular tunnel.It is exactly tunnel security against fire that vcehicular tunnel operation security wherein comprises very important one, tunnel is long and narrow underground structure, closure is stronger, only two ends outlet, if once breaking out of fire is put out not in time and will be caused great economic loss and casualties, the fire-fighting work therefore carrying out vcehicular tunnel is the most important.
Detection is a most important ring in fire-fighting work, and is to find that fire is the premise reducing economic loss.Fire detecting system of the prior art is mainly used in the factory sites such as indoor, and equipment volume is relatively big, and signal transmission distance is shorter, it is difficult to be suitable for the elongated shape regions such as vcehicular tunnel.Further, being affected by vcehicular tunnel wet environment, equipment is easily damaged；Additionally, longer vcehicular tunnel is higher to detection required precision.
Utility model content
This utility model mainly solves the above-mentioned technical problem existing for prior art, it is provided that a kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel.This system is reasonable in design, simple in construction, low cost and completely practicality；Further, response time is short, and accuracy of detection is high, the impact of scope length the most monitored；Additionally, measurement result has good repeatability, long-time stability are good.
Above-mentioned technical problem of the present utility model is mainly addressed by following technical proposals:
A kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel, including: it is positioned at the cable wire on vcehicular tunnel top, the optical fiber and grating sensing temperature detector being fixed on described cable wire, wherein: described optical fiber and grating sensing temperature detector is connected with signal processor by transmission cable.
Optimizing, above-mentioned a kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel, described transmission cable is arranged in the weak-current cable ditch bottom vcehicular tunnel maintaining roadway, and described optical fiber and grating sensing temperature detector is connected with described transmission cable by tail optical fiber.
Optimizing, above-mentioned a kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel, be provided with alarm button in described vcehicular tunnel, described alarm button is connected with transmission cable.
Optimize, above-mentioned a kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel, the left lateral road of vcehicular tunnel and right track are respectively provided with a signal processor, and described signal processor includes that four optical channels, each optical channel and an optical fiber and grating sensing temperature detector are connected.
Optimize, above-mentioned a kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel, described optical fiber and grating sensing temperature detector includes: heat conduction temperature-sensing pipe, it is provided with fiber grating in described heat conduction temperature-sensing pipe, described heat conduction temperature-sensing pipe two ends are connected with being connected optical cable by rustless steel connecting tube respectively, and described fiber grating two ends are respectively with to be connected optical cable connected.
Therefore, this utility model has the advantage that 1. is reasonable in design, simple in construction, low cost and completely practicality；2. response time is short, and accuracy of detection is high, and the impact of scope length the most monitored；3. measurement result has good repeatability, and long-time stability are good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the left view schematic diagram of Fig. 1.
Fig. 3 is optical fiber and grating sensing temperature panel detector structure schematic diagram of the present utility model.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, the technical solution of the utility model is described in further detail.
In figure, cable wire 1, optical fiber and grating sensing temperature detector 2, transmission cable 3, weak-current cable ditch 4, alarm button 5, wire clamp 6, tail optical fiber 7, pillar 8, connection optical cable 201, rustless steel connecting tube 202, fiber grating 203, heat conduction temperature-sensing pipe 204.
Embodiment:
As shown in Figure 1-2, a kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel, including: it is positioned at the cable wire 1 on vcehicular tunnel top, the optical fiber and grating sensing temperature detector 2 being fixed on cable wire 1, it is positioned at the weak-current cable ditch 4 bottom vcehicular tunnel maintaining roadway, the transmission cable 3 being positioned in weak-current cable ditch 4, wherein: optical fiber and grating sensing temperature detector 2 is connected with transmission cable 3 by tail optical fiber 7, and transmission cable 3 is connected with signal processor.
In the present embodiment, being provided with alarm button 5 in vcehicular tunnel, alarm button 5 is connected with transmission cable 3.
As shown in Figure 3, optical fiber and grating sensing temperature detector 2 includes: heat conduction temperature-sensing pipe 204, being provided with fiber grating 203 in heat conduction temperature-sensing pipe 204, heat conduction temperature-sensing pipe 204 two ends are connected with being connected optical cable 201 by rustless steel connecting tube 202 respectively, and fiber grating 203 two ends are respectively with to be connected optical cable 201 connected.
When ambient temperature changes, the cycle of fiber grating 203 can be caused to change, so its wavelength reflected back produces skew the most accordingly, this side-play amount is obtained by signal processor, calculates the variable quantity of temperature, the most detectable fire.
When specifically applying, the left lateral road of vcehicular tunnel and right track can be respectively provided with a signal processor, signal processor includes four optical channels, each optical channel and an optical fiber and grating sensing temperature detector 2 are connected, the search coverage of each optical fiber and grating sensing temperature detector 2 is divided into 4 detection subregions, amounting to 16 detection subregion synchronous workings, the alarm signal of its subregion exports to fire-alarm by processor, it is achieved fire alarm and address judge.
By above description, the present embodiment has the advantage that 1. is reasonable in design, simple in construction, low cost and completely practicality；2. response time is short, and accuracy of detection is high, and the impact of scope length the most monitored；3. measurement result has good repeatability, and long-time stability are good.
Specific embodiment described herein is only to this utility model spirit explanation for example.Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by this utility model person of ordinary skill in the field, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although the most more employing cable wire 1, optical fiber and grating sensing temperature detector 2, transmission cable 3, weak-current cable ditch 4, alarm button 5, wire clamp 6, tail optical fiber 7, pillar 8, connecting the terms such as optical cable 201, rustless steel connecting tube 202, fiber grating 203, heat conduction temperature-sensing pipe 204, but it is not precluded from using the probability of other term.Use these terms to be only used to more easily and describe and explain essence of the present utility model；It is all contrary with this utility model spirit for being construed as any additional restriction.
Claims (5)
1. the temperature detected by optical fiber fire detecting system for vcehicular tunnel, it is characterized in that, including: it is positioned at the cable wire (1) on vcehicular tunnel top, the optical fiber and grating sensing temperature detector (2) being fixed on described cable wire (1), wherein: described optical fiber and grating sensing temperature detector (2) is connected with signal processor by transmission cable (3).
A kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel the most according to claim 1, it is characterized in that, described transmission cable (3) is arranged in the weak-current cable ditch (4) bottom vcehicular tunnel maintaining roadway, and described optical fiber and grating sensing temperature detector (2) is connected with described transmission cable (3) by tail optical fiber (7).
A kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel the most according to claim 1, it is characterized in that, being provided with alarm button (5) in described vcehicular tunnel, described alarm button (5) is connected with transmission cable (3).
A kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel the most according to claim 1, it is characterized in that, the left lateral road of vcehicular tunnel and right track are respectively provided with a signal processor, described signal processor includes that four optical channels, each optical channel and an optical fiber and grating sensing temperature detector (2) are connected.
A kind of temperature detected by optical fiber fire detecting system for vcehicular tunnel the most according to claim 1, it is characterized in that, described optical fiber and grating sensing temperature detector (2) including: heat conduction temperature-sensing pipe (204), it is provided with fiber grating (203) in described heat conduction temperature-sensing pipe (204), described heat conduction temperature-sensing pipe (204) two ends respectively by rustless steel connecting tube (202) with to be connected optical cable (201) connected, described fiber grating (203) two ends are respectively with to be connected optical cable (201) connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620226314.8U CN205428116U (en) | 2016-03-23 | 2016-03-23 | A fiber optic temperature sensing fire detection system for highway tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620226314.8U CN205428116U (en) | 2016-03-23 | 2016-03-23 | A fiber optic temperature sensing fire detection system for highway tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN205428116U true CN205428116U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620226314.8U Expired - Fee Related CN205428116U (en) | 2016-03-23 | 2016-03-23 | A fiber optic temperature sensing fire detection system for highway tunnel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146358A (en) * | 2017-06-26 | 2017-09-08 | 中交航局安装工程有限公司 | A kind of fire real-time early warning system of defense suitable for tunnel and piping lane |
| CN108305429A (en) * | 2018-01-27 | 2018-07-20 | 上海腾盛智能安全科技股份有限公司 | A kind of tunnel fire detection system and its fiber grating detector |
-
2016
- 2016-03-23 CN CN201620226314.8U patent/CN205428116U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146358A (en) * | 2017-06-26 | 2017-09-08 | 中交航局安装工程有限公司 | A kind of fire real-time early warning system of defense suitable for tunnel and piping lane |
| CN108305429A (en) * | 2018-01-27 | 2018-07-20 | 上海腾盛智能安全科技股份有限公司 | A kind of tunnel fire detection system and its fiber grating detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20190323 |