CN216955717U - Novel pipeline safety prevention and control system - Google Patents
Novel pipeline safety prevention and control system Download PDFInfo
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- CN216955717U CN216955717U CN202220009546.3U CN202220009546U CN216955717U CN 216955717 U CN216955717 U CN 216955717U CN 202220009546 U CN202220009546 U CN 202220009546U CN 216955717 U CN216955717 U CN 216955717U
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Abstract
The utility model discloses a novel pipeline safety prevention and control system, and relates to the technical field of pipeline safety prevention and control. The novel pipeline safety prevention and control system comprises an optical fiber acoustic emission host, a branch box and an optical fiber sensitive module, the optical fiber acoustic emission host is connected with a plurality of branch boxes, the branch boxes are connected with a plurality of optical fiber sensitive modules, the optical fiber sensitive modules are uniformly fixed on the outer side of the monitoring pipeline, the novel pipeline safety prevention and control system can use the branch box to arrange more optical fiber sensitive modules, thereby realizing real-time monitoring without leakage points for longer pipelines, the system adopts the optical fiber sensing technology, the light of the test light source module is connected into the optical fiber and modulated by the light modulation mechanism, when light passes through the optical fiber sensitive module, the optical property of the light is changed, the modulated light carries information related to the pipeline condition, the signal is transmitted by adopting the optical fiber, and meanwhile, the anti-interference capability is strong.
Description
Technical Field
The utility model relates to the technical field of pipeline safety prevention and control, in particular to a novel pipeline safety prevention and control system.
Background
The natural gas pipeline and the running water pipeline in the city are mainly buried conveniently, the pipeline is long, the whole process monitoring is difficult, the pipeline is easy to damage by violent construction, the welding mode is usually adopted between the pipe and the pipe, the leakage condition is easy to occur under the condition of bearing high pressure in the pipe for a long time, an effective early warning means is lacked, the problem can be solved only by a mode of compensating after the fact, and a great deal of hidden danger is brought to city safety, enterprise operation and people life.
Because urban underground pipe network distribution area is wide, geographical environment along the line is complicated changeable, the method cost of artifical patrolling and examining is very high, not only waste a large amount of manpowers, material resources and financial resources, the artifical degree of difficulty that detects is big moreover, the precision is low, the stray current that receives in urban gas underground pipe network very much influences more, electromagnetic interference is more complicated, traditional monitoring mode monitoring system monitors length limitedly to lead to monitoring system to lay the cost higher, the anti-interference effect is relatively poor simultaneously.
Therefore, it is necessary to provide a new pipeline safety prevention and control system to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims to provide a novel pipeline safety prevention and control system to solve the problems of limited monitoring length and poor anti-interference effect of the conventional monitoring system in the background technology.
(II) technical scheme
In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a novel pipeline safety prevention and control system, includes optic fibre acoustic emission host computer, branch box and optic fibre sensitive module, optic fibre acoustic emission host computer is connected with a plurality of branch boxes, branch box is connected with a plurality of optic fibre sensitive modules, and is a plurality of the outside at the monitoring pipeline is evenly fixed to optic fibre sensitive module.
Preferably, the optical fiber acoustic emission host computer is configured with an optical fiber acoustic emission polling monitoring system, an optical fiber automatic switching protection system and a signal processing system, and the optical fiber acoustic emission polling monitoring system is used for polling measurement of multiple groups of optical fiber sensitive modules.
Preferably, the optical fiber automatic switching protection system comprises a monitoring module for monitoring an optical power value of the communication optical cable, an optical switch module for circuit switching, a test light source module and a single chip microcomputer main control module.
Preferably, the signal processing system is composed of a light modulation mechanism, a photoelectric detector and a signal processor.
Preferably, the optical fiber sensing module may be a refractive index modulation type optical fiber gas sensor, and a cross section of the refractive index modulation type optical fiber gas sensor is D-shaped.
Preferably, the optical fiber sensing module can be an optical fiber acoustic emission sensor.
Preferably, the gas sensing optical fiber is attached and fixed on the outer surface of the monitoring pipeline.
(III) advantageous effects
Compared with the prior art, the utility model provides a novel pipeline safety prevention and control system, which has the following beneficial effects:
this novel pipeline safety prevention and control system utilizes the branch box to lay more optic fibre sensitive module to can accomplish the real time monitoring of no missing leak source to longer pipeline, the technique of this system's adoption optic fibre sensing, through the light access optic fibre with test light source module, light modulation mechanism modulates through, when light passes through optic fibre sensitive module, make the optical property of light change, thereby make the modulated light carry information, adopt optic fibre to transmit the signal, stronger interference killing feature has.
Drawings
FIG. 1 is a schematic view of a novel pipeline safety prevention and control system;
fig. 2 is a schematic cross-sectional view of a refractive index modulation type optical fiber gas sensor.
In the figure: 1. monitoring the pipeline; 2. a branch box; 3. a fiber-optic sensing module; 4. and (3) an optical fiber sound emission host.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1, a novel pipeline safety prevention and control system comprises an optical fiber acoustic emission host 4, branch boxes 2 and optical fiber sensitive modules 3, wherein the optical fiber acoustic emission host 4 is connected with a plurality of branch boxes 2, the branch boxes 2 are connected with a plurality of optical fiber sensitive modules 3, the optical fiber sensitive modules 3 are uniformly fixed on the outer side of a monitoring pipeline 1, the optical fiber acoustic emission host 4 is configured with an optical fiber acoustic emission polling monitoring system, an optical fiber automatic switching protection system and a signal processing system, the optical fiber acoustic emission polling monitoring system is used for polling measurement of a plurality of groups of optical fiber sensitive modules 3, the optical fiber automatic switching protection system comprises a monitoring module for monitoring the optical power value of a communication optical cable, the system comprises an optical switch module for circuit switching, a test light source module and a singlechip main control module, and a signal processing system consists of an optical modulation mechanism, a photoelectric detector and a signal processor.
When the pipeline generates an acoustic emission signal due to factors such as crack propagation and the like, the acoustic emission signal generated by the acoustic emission source is transmitted through the pipeline in a wave form, the acoustic emission wave causes vibration of the surface of the material when reaching the surface of the material, the energy of the wave is converted into vibration energy of the pipeline at the moment, the acoustic emission sensor attached to the surface of the material can sense mechanical vibration of the surface of the material, light of a test light source is modulated by a light modulation mechanism and then is sent to an optical fiber, when the light passes through an optical fiber sensitive module, the optical property of the light is changed, so that the modulated light carries information of the vibration wave, then the modulated light is sent to a photoelectric detector and a signal processor for processing to obtain a pipeline vibration signal, and when an abnormal signal occurs, the pipeline is judged to be abnormal, so that the safety of the pipeline is monitored.
The branch box 2, the optical fiber sound emission polling monitoring system and the optical fiber automatic switching protection system are arranged to poll the multiple groups of optical fiber sensitive modules 3 connected with the branch box 2 in turn, so that the monitoring length of the pipeline is increased, real-time monitoring of a long pipeline without leakage points can be realized, and the stability of system operation can be ensured.
Example two
Specifically, the optical fiber sensing module 3 may be a refractive index modulation type optical fiber gas sensor, and the cross section of the refractive index modulation type optical fiber gas sensor is D-shaped.
Specifically, the gas sensing optical fiber is attached and fixed on the outer surface of the monitoring pipeline 1.
The refractive index modulation type optical fiber gas sensor utilizes the sensitivity of the volume or refractive index of a specific material to gas, replaces an optical fiber cladding or coats the optical fiber end face with the volume or refractive index modulation type optical fiber gas sensor, and can obtain the information of gas concentration by measuring optical fiber waveguide parameters caused by the change of the refractive index, such as the change of effective refractive index, birefringence and loss. For example, in the case of monitoring a natural gas pipeline, a palladium film is deposited on the end face of an optical fiber, and the fiber-film and film-air interfaces form a Fabry-Perot cavity of the optical fiber, so as to form a D-shaped optical fiber (as shown in fig. 2). The palladium membrane expands when encountering natural gas, so that the Fabry-Perot cavity changes, and concentration data of the natural gas can be obtained by measuring the change of output interference light. For the monitored severe environment, the sensor can adopt a PLC packaging technology to ensure the long-term reliability.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a novel pipeline safety prevention and control system, includes optic fibre acoustic emission host computer (4), branch box (2) and optic fibre sensitive module (3), its characterized in that: the optical fiber acoustic emission host (4) is connected with a plurality of branch boxes (2), each branch box (2) is connected with a plurality of optical fiber sensitive modules (3), and the optical fiber sensitive modules (3) are uniformly fixed on the outer side of the monitoring pipeline (1).
2. The novel pipeline safety prevention and control system of claim 1, characterized in that: the optical fiber acoustic emission host (4) is provided with an optical fiber acoustic emission polling monitoring system, an optical fiber automatic switching protection system and a signal processing system, and the optical fiber acoustic emission polling monitoring system is used for polling and measuring a plurality of groups of optical fiber sensitive modules (3).
3. The novel pipeline safety prevention and control system of claim 2, characterized in that: the optical fiber automatic switching protection system comprises a monitoring module for monitoring the optical power value of the communication optical cable, an optical switch module for circuit switching, a test light source module and a single chip microcomputer main control module.
4. The novel pipeline safety prevention and control system of claim 2, characterized in that: the signal processing system consists of an optical modulation mechanism, a photoelectric detector and a signal processor.
5. The novel pipeline safety prevention and control system of claim 1, characterized in that: the optical fiber sensitive module (3) can be a refractive index modulation type optical fiber gas sensor, and the cross section of the refractive index modulation type optical fiber gas sensor is D-shaped.
6. The novel pipeline safety prevention and control system of claim 1, characterized in that: the optical fiber sensitive module (3) can be an optical fiber acoustic emission sensor.
7. The novel pipeline safety prevention and control system of claim 5, characterized in that: the gas sensing optical fiber is attached and fixed on the outer surface of the monitoring pipeline (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220009546.3U CN216955717U (en) | 2022-01-05 | 2022-01-05 | Novel pipeline safety prevention and control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220009546.3U CN216955717U (en) | 2022-01-05 | 2022-01-05 | Novel pipeline safety prevention and control system |
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| Publication Number | Publication Date |
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| CN216955717U true CN216955717U (en) | 2022-07-12 |
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| CN202220009546.3U Active CN216955717U (en) | 2022-01-05 | 2022-01-05 | Novel pipeline safety prevention and control system |
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- 2022-01-05 CN CN202220009546.3U patent/CN216955717U/en active Active
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