CN110702260A - Distributed optical fiber temperature measurement system for coal mine - Google Patents
Distributed optical fiber temperature measurement system for coal mine Download PDFInfo
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- CN110702260A CN110702260A CN201910995564.6A CN201910995564A CN110702260A CN 110702260 A CN110702260 A CN 110702260A CN 201910995564 A CN201910995564 A CN 201910995564A CN 110702260 A CN110702260 A CN 110702260A
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- 239000003245 coal Substances 0.000 title claims abstract description 60
- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 51
- 239000013307 optical fiber Substances 0.000 title claims abstract description 26
- 238000005065 mining Methods 0.000 claims abstract description 53
- 230000003287 optical effect Effects 0.000 claims abstract description 42
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000010183 spectrum analysis Methods 0.000 claims abstract description 6
- 230000003321 amplification Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 16
- 238000009422 external insulation Methods 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 2
- 230000002265 prevention Effects 0.000 abstract description 6
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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Abstract
The invention discloses a distributed optical fiber temperature measurement system for a coal mine, which comprises a distributed optical fiber temperature measurement device, a ground workstation and a mine temperature sensing cable, wherein the distributed optical fiber temperature measurement device is arranged by adopting a mine distributed temperature measurement host, the mine distributed temperature measurement host comprises an optical signal generation module, a backscattering signal module, a spectrum analysis module, a photoelectric conversion module, a signal amplification module, a signal acquisition module, a signal processing module, an information display module, an acousto-optic alarm module and a multi-channel interface module, and a ground monitoring server is arranged in the ground workstation. According to the invention, by arranging the mining temperature sensing cable, the temperature of key areas such as a coal mine stope face, a goaf and a coal pillar is measured in a 24-hour uninterrupted distributed manner, the temperature is accurately detected, no blind area exists, meanwhile, the accurate positioning of temperature abnormal points is realized, hidden dangers are accurately and timely found, and effective data support is provided for fire prevention and extinguishing measures of a coal mine mining area.
Description
Technical Field
The invention relates to the technical field of coal mine optical cable temperature measurement, in particular to a distributed optical fiber temperature measurement system for a coal mine.
Background
In modern coal mines, due to the continuous perfection of various operation rules and the continuous improvement of the automation degree of mines, the proportion of open fire and gunfire in the statistics of fire accident causes is smaller and smaller, and the mine electric fire prevention and control becomes the important factor for mine fire prevention. According to the special structure of the coal mine, the electric fire is often extremely hidden in the early stage. The cable is widely applied to mines in China as a necessity for ensuring the stability of a coal mine production power supply system, in view of the particularity of underground operation places of the coal mines, the China has strict product standards and requirements on the mine cable, but the cable is wide in spread range and complex in structure of a coal mine roadway, once the temperature of the cable is locally too high, a fire disaster can be caused, the hazard is great, and therefore a temperature sensor is required to be used for measuring the temperature of the cable in an operation state.
However, the traditional temperature measurement mode is based on electric signals, and due to the particularity of the mine environment, safety problems are easy to occur, the accuracy of temperature measurement is greatly influenced, and the defects of complex wiring, easy damage, large maintenance work, small measurement range and the like exist.
Therefore, it is necessary to provide a distributed optical fiber temperature measurement system for coal mines to solve the above problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a distributed optical fiber temperature measurement system for a coal mine, which is characterized in that a temperature sensing optical cable for the mine is arranged, so that the temperature of key areas such as a coal mine stope face, a goaf and a coal pillar is measured in a 24-hour uninterrupted distributed manner, the temperature is accurately detected, no blind area exists, meanwhile, the accurate positioning of temperature abnormal points is realized, hidden dangers are accurately found in time, effective data support is provided for fire prevention and extinguishing measures of a coal mine stope, and the problems in the background art are solved.
In order to achieve the purpose, the invention provides the following technical scheme: a distributed optical fiber temperature measurement system for a coal mine comprises a distributed optical fiber temperature measurement device, a ground workstation and a mining temperature-sensing optical cable, wherein the distributed optical fiber temperature measurement device is arranged by a mining distributed temperature measurement host, the mining distributed temperature measurement host comprises an optical signal generation module, a back scattering signal module, a spectrum analysis module, a photoelectric conversion module, a signal amplification module, a signal acquisition module, a signal processing module, an information display module, an acousto-optic alarm module and a multi-channel interface module, a coal pillar, a working face, a stope line, a goaf, an air inlet channel, an air return channel and a substation are arranged in the coal mine, the mining distributed temperature measurement host is arranged in the substation, the mining temperature-sensing optical cable is arranged in the coal pillar, the working face, the stope line, the goaf, the air inlet channel and the air return channel and is laid in an L shape, and a ground monitoring server is arranged in the ground workstation.
Preferably, the mining temperature-sensing optical cable comprises three cable cores and a temperature-measuring optical cable, and is three, a cable core insulation shielding layer and a cable core insulation shielding layer are arranged on the surface of each cable core, and are three, the cable core insulation shielding layer is externally provided with the same cable external insulation protective sleeve, the temperature-measuring optical cable is located outside the cable external insulation protective sleeve and is fixedly connected with an insulation ribbon, and key positions are bonded by heat-conducting silica gel and can also be connected in a jumper wire mode.
Preferably, the mining temperature-sensing optical cable comprises three cable cores and a temperature-measuring optical cable, the cable cores are all provided with cable core insulation shielding layers and are three, the cable core insulation shielding layers are externally provided with the same cable external insulation protective sleeve, and the temperature-measuring optical cable is located inside the center of the cable external insulation protective sleeve and is sleeved and arranged.
Preferably, an ethernet switch is arranged between the mining distributed temperature measurement host and the ground monitoring server, and the mining distributed temperature measurement host establishes network connection with the ground monitoring server through the ethernet switch by adopting a communication optical cable.
Preferably, the mining temperature-sensing optical cables are arranged in the coal pillar, the working face, the stoping line, the goaf, the air inlet channel and the air return channel every 50 meters.
Preferably, the sound and light alarm module is set by adopting low-temperature alarm, high-temperature alarm and heating rate alarm.
Preferably, a plurality of substations can be arranged in the coal mine, each substation is provided with a mining distributed temperature measurement host, and the plurality of mining distributed temperature measurement hosts are connected with the ground monitoring server through separate networks.
Preferably, the temperature-sensing optical cables for the mine laid in the coal pillar, the working face, the stoping line, the goaf, the air inlet channel and the air return channel are respectively connected with the distributed temperature-measuring host for the mine in parallel.
The invention has the technical effects and advantages that:
1. according to the invention, the mining temperature-sensing optical cables are arranged in the coal pillar, the working face, the stoping line, the goaf, the air inlet channel and the air return channel in the coal mine, so that the temperature of key areas such as the coal mining working face, the goaf and the coal pillar is measured in a 24-hour uninterrupted distributed manner by the mining distributed temperature measurement host, the temperature is accurately detected, no blind area exists, meanwhile, the accurate positioning of abnormal temperature points is realized, meanwhile, the system software is used for carrying out partition management on the key areas in combination with the actual requirements of the coal mine, and by setting differential temperature and constant temperature alarm, hidden dangers are accurately found in time, and effective data support is provided for fire prevention and extinguishing measures in a coal mining area.
Drawings
FIG. 1 is a schematic structural diagram of a distributed optical fiber temperature measurement principle for mining according to the present invention;
FIG. 2 is a schematic diagram of a laying structure of a coal mine temperature measuring cable according to the invention;
FIG. 3 is a schematic structural diagram of a mining distributed optical fiber temperature measurement step of the present invention.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
according to the distributed optical fiber temperature measurement system for coal mine shown in the figures 1-3, which comprises a distributed optical fiber temperature measurement device, a ground workstation and a temperature sensing optical cable for mine, wherein the distributed optical fiber temperature measurement device is arranged by a distributed temperature measurement host for mine, the distributed temperature measurement host for mine is arranged by ZWX8-Z model, and comprises an optical signal generation module, a backscattering signal module, a spectrum analysis module, a photoelectric conversion module, a signal amplification module, a signal acquisition module, a signal processing module, an information display module, an acousto-optic alarm module and a multi-channel interface module, wherein the optical signal generation module is arranged by adopting pulse laser, the spectrum analysis module is arranged by adopting a wavelength division multiplexer, the spectrum analysis module is connected with the signal acquisition module by adopting the backscattering signal module, and the signal acquisition module is connected with the signal processing module by the photoelectric conversion module and the signal amplification module, the mining distributed temperature measurement host is located inside the substation, the mining temperature sensing optical cable is located inside the coal pillar, the working face, the stoping line, the goaf, the air inlet channel and the air return channel and laid in an L shape, a ground monitoring server is arranged inside the ground workstation, and an L-shaped optical cable is laid for monitoring the temperature distribution of the longitudinal area of the goaf to monitor the fire condition in the mining process. The working face is buried in the goaf from the position where the working face is pushed, when the working face reaches a mining stop line area, the pushing speed is slow, at the moment, optical cables need to be arranged according to the natural ignition condition of an actual coal mine, the arrangement of one optical cable is recommended to be arranged at intervals of 50 meters, the temperature measurement host is installed in a substation (the position where electricity and network taking are easy to take) of the mining area, monitoring data are uploaded to a ground control room through an Ethernet switch in the substation, and data analysis, display and early warning are carried out on the ground workstation.
Furthermore, in the above technical scheme, the mining temperature-sensing optical cable comprises three cable cores and one temperature-measuring optical cable, wherein cable core insulation shielding layers are arranged on the surfaces of the three cable cores, the same cable external insulation protective sleeve is arranged outside the three cable core insulation shielding layers, the temperature-measuring optical cable is fixedly connected with the cable external insulation protective sleeve by an insulation ribbon, and the key part is bonded by heat-conducting silica gel or connected by a jumper wire mode to form surface-mounted temperature-measuring optical cable laying, so that the price cost is low;
furthermore, in the above technical scheme, the mining temperature-sensing optical cable comprises three cable cores and one temperature-sensing optical cable, wherein cable core insulation shielding layers are arranged on the surfaces of the three cable cores, the same cable external insulation protective sleeve is arranged outside the three cable core insulation shielding layers, and the temperature-sensing optical cable is sleeved inside the center of the cable external insulation protective sleeve to form an internally-stranded temperature-sensing optical cable which can make a very quick response to a load change, has extremely high precision and is high in cost;
further, in the above technical solution, an ethernet switch is disposed between the mining distributed temperature measurement host and the ground monitoring server, the mining distributed temperature measurement host establishes network connection with the ground monitoring server through the ethernet switch by using a communication optical cable, uploads the network connection to the ground control room through the ethernet switch, and performs data analysis, display and early warning at the ground workstation;
furthermore, in the technical scheme, the mining temperature-sensing optical cables are arranged in the coal pillar, the working face, the stoping line, the goaf, the air inlet channel and the air return channel every 50 meters, so that accurate early warning and alarming can be realized at the first time.
Further, in the above technical solution, the sound and light alarm module adopts low temperature alarm, high temperature alarm and heating rate alarm settings, so that it has alarm functions of constant temperature alarm (setting maximum temperature/minimum temperature value), differential temperature alarm (too large difference between real-time temperature and average temperature for distinguishing local hot spot), too fast temperature rise alarm, etc.; the alarm is divided into a working level and a management level, and personnel in the management level can check the alarm through a local area network;
furthermore, in the technical scheme, a plurality of power substations can be arranged in the coal mine, each power substation is provided with a mining distributed temperature measurement host, and the plurality of mining distributed temperature measurement hosts are connected with a ground monitoring server through separate networks, so that the length of a measurement area can be partitioned, and local key monitoring and partition alarming can be performed on certain areas;
furthermore, in the technical scheme, the mining temperature-sensing optical cables laid in the coal pillar, the working face, the stoping line, the goaf, the air inlet channel and the air return channel are respectively arranged in parallel with the mining distributed temperature measurement host, so that the positioning precision is high, and the abnormal temperature point can be accurately positioned.
The working principle of the invention is as follows:
referring to the attached drawings 1-3 of the specification, when the temperature of a cable in a coal mine is measured, the temperature is detected through a temperature measuring optical cable on the cable, the detected data is sent to a mining distributed temperature measuring host, the detected temperature is processed through the mining distributed temperature measuring host, a whole-course partition diagram, a temperature field distribution curve and a temperature change curve along with time are displayed in an information display module of the mining distributed temperature measuring host, and an audible and visual alarm module is controlled to perform corresponding low-temperature alarm, high-temperature alarm or heating rate alarm according to the processing result, so that the mining temperature sensing optical cable is arranged inside a coal pillar, a working face, a stope line, a goaf, an air inlet channel and an air return channel in the coal mine, each part of the coal mine is monitored in real time, the temperature of key areas such as a coal mine stope working face, the goaf and the coal pillar is effectively measured in, the temperature is accurately detected, the blind area is avoided, the accurate positioning of temperature abnormal points is realized, the actual requirements of a coal mine are combined, the system software sets partition management on key areas, the temperature difference and the temperature setting alarm can be set, hidden dangers can be accurately and timely found, and effective data support is provided for fire prevention and extinguishing measures of a coal mining area.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a distributed optical fiber temperature measurement system for coal mine, includes distributed optical fiber temperature measuring device, ground workstation and mining temperature sensing cable, its characterized in that: the distributed optical fiber temperature measuring device is arranged by adopting a mining distributed temperature measuring host, the mining distributed temperature measuring host comprises an optical signal generating module, a backscattering signal module, a spectrum analysis module, a photoelectric conversion module, a signal amplification module, a signal acquisition module, a signal processing module, an information display module, an audible and visual alarm module and a multi-channel interface module, a coal pillar, a working face, a stoping line, a goaf, an air inlet channel, an air return channel and a substation are arranged in a coal mine, the mining distributed temperature measuring host is arranged in the substation, a mining temperature sensing cable is arranged in the coal pillar, the working face, the stoping line, the goaf, the air inlet channel and the air return channel and is laid in an L shape, and a ground monitoring server is arranged in the ground workstation.
2. The distributed optical fiber temperature measurement system for the coal mine according to claim 1, wherein: the mining temperature-sensing cable comprises three cable cores and a temperature-measuring optical cable, the cable cores are all provided with a cable core insulation shielding layer and three on the surface, the cable core insulation shielding layer is externally provided with the same cable external insulation protective sleeve, the temperature-measuring optical cable is located outside the cable external insulation protective sleeve and fixedly connected with the cable external insulation protective sleeve through an insulation ribbon, and key positions are bonded through heat-conducting silica gel and can also be connected in a wire jumper mode.
3. The distributed optical fiber temperature measurement system for the coal mine according to claim 1, wherein: the mining temperature-sensing cable comprises three cable cores and a temperature-measuring optical cable, wherein the cable cores are all provided with cable core insulation shielding layers and are three, the cable core insulation shielding layers are externally provided with the same cable external insulation protective sleeve, and the temperature-measuring optical cable is located inside the center of the cable external insulation protective sleeve and is sleeved and arranged.
4. The distributed optical fiber temperature measurement system for the coal mine according to claim 1, wherein: an Ethernet switch is arranged between the mining distributed temperature measurement host and the ground monitoring server, and the mining distributed temperature measurement host adopts a communication optical cable to establish network connection with the ground monitoring server through the Ethernet switch.
5. The distributed optical fiber temperature measurement system for the coal mine according to claim 1, wherein: the mining temperature-sensing cables are arranged in the coal pillar, the working face, the stoping line, the goaf, the air inlet channel and the air return channel every 50 meters.
6. The distributed optical fiber temperature measurement system for the coal mine according to claim 1, wherein: the acousto-optic alarm module adopts low-temperature alarm, high-temperature alarm and heating rate alarm settings.
7. The distributed optical fiber temperature measurement system for the coal mine according to claim 1, wherein: a plurality of substations can be arranged in the coal mine, a mining distributed temperature measurement host is arranged in each substation, and the mining distributed temperature measurement hosts are connected with the ground monitoring server through separate networks.
8. The distributed optical fiber temperature measurement system for the coal mine according to claim 1, wherein: the mining temperature sensing cables laid in the coal pillar, the working face, the stoping line, the goaf, the air inlet channel and the air return channel are respectively connected with the mining distributed temperature measurement host in parallel.
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| CN201910995564.6A CN110702260A (en) | 2019-10-16 | 2019-10-16 | Distributed optical fiber temperature measurement system for coal mine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521292A (en) * | 2020-05-23 | 2020-08-11 | 山东鼎诺节能环保服务有限公司 | Coal mine goaf temperature monitoring system and distributed optical fiber temperature measurement method |
| CN116412932A (en) * | 2023-06-07 | 2023-07-11 | 山东千颐科技有限公司 | Mining distributed optical fiber temperature measuring device and application method thereof |
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Application publication date: 20200117 |