CN203242097U - Monitoring and early warning system for spontaneous combustion of coal fields - Google Patents
Monitoring and early warning system for spontaneous combustion of coal fields Download PDFInfo
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- CN203242097U CN203242097U CN 201320234537 CN201320234537U CN203242097U CN 203242097 U CN203242097 U CN 203242097U CN 201320234537 CN201320234537 CN 201320234537 CN 201320234537 U CN201320234537 U CN 201320234537U CN 203242097 U CN203242097 U CN 203242097U
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Abstract
The utility model discloses a monitoring and early warning system for spontaneous combustion of coal fields. The system comprises an infrared scanner used for scanning surface temperature changes of the whole coal fields, CO sensors and oxygen sensor arranged around the coal fields, a control system used for analyzing collected data from the devices, and an alarm device used for receiving early warning information sent by control system signals. The system utilizes a fixed layout monitor, is suitable for fixed large-scale coal storage fields, and minimizes ways that present anti spontaneous combustion monitoring of the coal fields is mainly depended on artificially placing thermometers to detect. The system uses a multi-point, multi-type and real-time monitoring, comprehensively determines through multi-parameters, is high in accuracy, and can simultaneously realize monitoring and early warning for the coal fields.
Description
Technical field
The utility model relates to material storage monitoring field, is specifically related to the spontaneous combustion monitoring early-warning system that a kind of coaly attitude that coal yard is stacked is monitored at any time.
Background technology
Coal occupies an important position in the industries such as generating, smelting, chemical industry, building materials as the important raw material of industry and fuel.And as non-renewable resources, how rationally, effectively develop coal resources and avoid wasting without reason is the direction that we need to make great efforts.The unit of normal operation coal all needs in advance or presetting system is laid in a certain amount of coal, the coal of deposit need to be concentrated stacking, but thereby dump is let slip meeting of a specified duration and is emitted heat with airborne oxygen generation oxidation reaction, coal can produce the gases such as CO, smog when heating up, if oxidation reaction continues to occur, then the temperature of dump can rise higher and higher, and the temperature of coal can be accelerated the coal oxidation reaction velocity after raising, under such interaction, the temperature of dump is more and more higher, when surpassing the spontaneous ignition temperature of coal, will spontaneous combustion.
Monitoring and early warning for self-ignition of coal pile, traditional approach mainly is to insert the temperature variation that temperature sensor is monitored dump by multiple spot on dump, to determine whether when spontaneous combustion, this is a kind of manual detection mode of contact that is operated according to the variation of coal yard at any time by the workman, but the CO that emits when heating up owing to coal is harmful, in addition, because the coal of coal yard need to often use and fill up, each change just need to repeat to plug in temperature sensor, and therefore the not only easy safety and health to operating personnel of existing this detection mode threatens but also brings a large amount of work.
The utility model content
The coal generation dieseling of in the prior art coal yard being stacked can't in time be detected and the problem of early warning in order to solve, thus the coal yard monitoring early-warning system that the utility model provides a kind of variable condition of utilizing multimode to measure the coal yard different material in advance the coal yard spontaneous combustion to be carried out early warning.Concrete scheme is as follows: a kind of coal yard spontaneous combustion monitoring early-warning system, it is characterized in that, comprise the infrared scanner that changes be used to scanning whole coal yard surface temperature, be arranged in coal yard CO sensor, oxygen sensor everywhere, analyze the control system of each devices collect data, the receiving control system signal sends the warning device of early warning information, and described infrared scanner, CO sensor, oxygen sensor are connected with control system with warning device and are connected.
Be convenient monitoring coal yard: described control system comprises analog to digital converter, host computer, print output system, wherein analog to digital converter receives image data and becomes digital signal to send to host computer analog signal conversion again, host computer is exported corresponding information by routine analyzer after to the data analysis that transmits, and print output system is exported the analysis result of host computer as required.
For ease of data management: smoke transducer and temperature sensor also are installed in the described coal yard, and described smoke transducer is connected with control system by the switching value module, and described temperature sensor is connected with control system by analog to digital converter.
For obtaining from many aspects the temperature of coal yard: described control system is connected with the thermometric thermometer of measuring the dump bottom temp, and described thermometric thermometer obtains the temperature of dump by the temperature probe that is imbedded in the dump bottom.
The utility model adopts fixed layout monitoring, the large-scale coal storage place that is suitable for fixing, reduce the anti-spontaneous combustion monitoring of existing coal yard and mainly relied on the mode of manually assigning thermometer to detect, this programme adopts multiple spot polymorphic type Real Time Monitoring, multi-parameter comprehensive judges, degree of accuracy is high and can realize simultaneously monitoring and the early warning of coal yard.Utilize non-contact infrared temperature scanning instrument, region-wide autoscan is carried out on the dump surface, when having the spontaneous combustion omen to occur, the internal heat of local coal body is piled up the rising that will cause this zone coal body surface temperature, the variation of this coal body surface temperature will be captured in real time by this monitoring system and in time send early warning in conjunction with the variation of the gas concentrations such as coal yard CO, and spontaneous combustion hidden danger is eliminated in bud.
Description of drawings
Fig. 1 structural representation of the present utility model;
Attached number in the figure explanation: 1-control system, 101-host computer, 102-print output system, 103-warning device, 2-analog to digital converter, 201-CO sensor, 202-oxygen sensor, 203-temperature sensor, 3-infrared scanner, 4-switching value module, 401-smoke transducer, 5-temperature survey table, 501-temperature probe.
Embodiment
As shown in Figure 1, coal yard spontaneous combustion monitoring early-warning system of the present utility model, comprise the infrared scanner 3 that changes be used to scanning whole coal yard surface temperature, be arranged in coal yard CO sensor 201, oxygen sensor 202 everywhere, analyze the control system 1 of each devices collect data, receiving control system 1 signal sends the warning device 103 of early warning information, and described infrared scanner 3, CO sensor 201, oxygen sensor 202 are connected with warning device and are connected with control system 101 respectively.
The utility model with infrared scanner 3 be installed in the middle of the coal yard can the pivot arm of 360 ° of rotations on, the quantity of concrete infrared scanner 3 can arrange a plurality of according to the big or small subregion of coal yard, scan mode can be the actual temp state of real time scan coal yard, also can adopt the every certain interval of time of thermal infrared imager that respective angles is taken a dump surface thermography, whether control system 1 can exceed standard according to the dump temperature that instant messages or thermography are analyzed particular location, because dump generation dieseling, temperature is one of them main cause, the CO concentration of corresponding position, oxygen concentration and wind speed, the reasons such as humidity all can have influence on the spontaneous combustion of dump, the probability of spontaneous combustion will be multiplied after above-mentioned factor is superimposed, therefore on the basis of analysis temperature, also need to consider other variation of dump, to avoid occuring at low temperatures spontaneous combustion, control system 1 is when analyzing the dump temperature of corresponding position, information according to the CO sensor 201 that is arranged on the place, fixed position and oxygen sensor 202 transmission, the state at the dump place that the analysis-by-synthesis temperature changes judges whether that according to predefined corresponding index needs send warning or early warning information by warning device 103.The oxygen sensor 202 of installing is for detection of oxygen content in the coal yard, and the personnel that prevent mishap occurs in the perform region anoxic, and first, high two-stage alarm limit can be set, to guarantee personal safety.Concrete CO sensor 201 and oxygen sensor 202 can be installed in the top of coal yard uniformly, according to the specifically highly general measuring point of dump apart from about 5 meters of dumps, distance between the adjacent sensors determines according to model and the performance of each sensor, a general CO sensor 201 controls 40
2About rice, measurement range: 0-100%LEL, elementary warning is 25%LEL, secondary warning 50～60LEL, the warning settings are adjustable, output signal 4-20mA.And oxygen sensor control 10
2About rice, measurement range: 0-25%vol, high alarm setting are 18%, and the warning settings are adjustable, output signal 4-20mA.
Be the reception that makes things convenient for information and the statistics of data: control system 1 of the present utility model comprises analog to digital converter 2, host computer 101, print output system 102, wherein analog to digital converter 2 receives image data and becomes digital signal to send to host computer 101 analog signal conversion again, the model that analog to digital converter 2 adopts is EDA9017, analog to digital converter EDA9017 can be widely used in various Industry Control and the measuring system, its energy gaging pressure, temperature, 4～20mA or 0～10V signal of the output of the transmitters such as electric weight, its communication interface is RS485 or RS232, power supply is DC8～30V, communications protocol is MODBUS-RTU, ASCII character, 3 kinds of sexadecimal LC-02 agreements, agreement can be identified automatically.Host computer 101 is exported corresponding information by routine analyzer after to the data analysis that transmits, and print output system 102 is exported the analysis result of host computer 101 as required.Host computer 101 can be concrete PC, also can be single-chip microcomputer, and can be connected by network or cable between print output system 102 and the host computer 101.The signal that analog to digital converter 2 partly gathers signals collecting as the recipient of various signals carries out conversion process and sends to control system again, the signal of collection carry out analog to digital conversion by analog to digital converter and amplify accordingly, filtering sends digital signal to control system after processing.
Be further Accurate Analysis coal yard state, the utility model also is equipped with smoke transducer 401 and temperature sensor 203 in coal yard, described smoke transducer 401 is connected with control system 1 by switching value module 4, and described temperature sensor 203 is connected with control system 1 by analog to digital converter 2.The mounting means of smoke transducer 401 and temperature sensor 203 is identical with the mounting means of oxygen sensor 202, whether smoke transducer 401 smog that fire or coal storage glow and produce occurs for detection of the coal yard inner space, smoke transducer 401 is not subjected to strong magnetic interference, be not afraid of humidity, under low-temperature condition (20.C) can work, have three sub-samplings function relatively, can prevent from occurring in detected space disposablely crossing cigarette or other similar interference, but smoke transducer 401 self identification is avoided reporting by mistake.Temperature sensor 203 is used for preventing infrared scanner 3 faults or reference information being provided.For understanding the temperature of dump bottom, the control system 1 of this programme is connected with the thermometric thermometer 5 of measuring the dump bottom temp, and described thermometric thermometer 5 obtains the temperature of dump by the temperature probe 501 that is imbedded in the dump bottom.The thermometric thermometer 5 of this programme is the thermopair bimetallic system cell, and concrete model adopts GGUAN/HC520, and its temperature measurement range is-50～70 degree, and humidity is 20%～99%C/F, and the temperature of its measurement directly sends host computer 101 to.The temperature probe 501 of thermometric thermometer 5 can be installed in respectively on the barricade of the ground of bar shaped coal yard and side, thermometric thermometer 5 can be on a cable conductor several temperature probes 501 in parallel along its length, the outer wrap pvc sheath of cable conductor, the pvc sheath outer wrap has armouring wire, the armouring wire outer wrap has the high pressure polyethylene oversheath, can lay in advance used for galvanized tube in walking cable conductor on metope or ground.Temperature probe 501 adopts digital temperature sensor DS18820, temperature-measuring range-55～+ 125 ℃, its VDD, the GND pin passes through respectively the VCC of two cable conductors and temperature survey table, GND connects, the DQ pin of temperature survey table is connected with DS18820 by the 3rd cable conductor, digital temperature sensor DS18820 transmits after check point is with the measured signal digitizing again, this is so that the good in anti-interference performance of measuring process, reliability is high, long transmission distance, temperature sensor DS18820 can also adopt temperature collect module STA-D type 18820, STA-D type 18820 converts the monobus lin protocol of thermometric thermometer to the MODBUS agreement, have simultaneously the function that shows and report to the police, then by the CAN bus each layer temperature data of coal storage are passed to host computer.Concrete installation quantity is installed one or more according to the large I of coal yard; but a thermometric thermometer tape cable wire is with about 42 meters, and every temperature probe of 2.5 meters configurations, adjacent temperature probe protected area intersects mutually; make temperature monitoring more accurate, safe and reliable.
During work, oxygen sensor 202, CO sensor 201, smoke transducer 401, the analog signals that temperature sensor 203 will collect separately at first converts 4～20mA analog signals to through internal transmitter separately, send analog to digital converter EDA9017 or switching value module 4 to by cable again, analog to digital converter EDA9017 or switching value module 4 are passed to host computer 101 in the control system to all digital quantity signals after the conversion by the CAN bus again, smoke transducer 401 is sent to the switching value signal that collects among the switching value measurement module EDA9050, switching value measurement module EDA9050 converts all switching value signals to digital quantity signal and passes to host computer by the CAN bus, and operating personnel can control the operation that host computer is carried out whole supervisory system at Local or Remote.Host computer is controlled the operation of coal yard in real time by software, and software communicates with analog measurement module EDA9017, switching value measurement module EDA9050, temperature collect module STA-D type 18820 respectively by the MODBUS bus.
The above only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, anyly be familiar with the technician of this patent within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned prompting is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification all still belong in the scope of the utility model scheme.
Claims (3)
1. coal yard spontaneous combustion monitoring early-warning system, it is characterized in that, comprise the infrared scanner (3) that changes be used to scanning whole coal yard surface temperature, be arranged in coal yard CO sensor (201), oxygen sensor (202) everywhere, analyze the control system (1) of each devices collect data, receiving control system (1) signal sends the warning device (103) of early warning information, and described infrared scanner (3), CO sensor (201), oxygen sensor (202) are connected 103 with warning device) be connected with control system (1) respectively.
2. a kind of coal yard spontaneous combustion monitoring early-warning system as claimed in claim 1, it is characterized in that, smoke transducer (401) and temperature sensor (203) also are installed in the described coal yard, described smoke transducer (401) is connected with control system (1) by switching value module (4), and described temperature sensor (203) is connected with control system (1) by analog to digital converter (2).
3. a kind of coal yard spontaneous combustion monitoring early-warning system as claimed in claim 1, it is characterized in that, described control system (1) is connected with the thermometric thermometer (5) of measuring the dump bottom temp, and described thermometric thermometer (5) obtains the temperature of dump by the temperature probe (501) that is imbedded in the dump bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201320234537 CN203242097U (en) | 2013-05-03 | 2013-05-03 | Monitoring and early warning system for spontaneous combustion of coal fields |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320234537 CN203242097U (en) | 2013-05-03 | 2013-05-03 | Monitoring and early warning system for spontaneous combustion of coal fields |
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| CN203242097U true CN203242097U (en) | 2013-10-16 |
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| CN 201320234537 Expired - Fee Related CN203242097U (en) | 2013-05-03 | 2013-05-03 | Monitoring and early warning system for spontaneous combustion of coal fields |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070015A (en) * | 2015-08-10 | 2015-11-18 | 中国矿业大学 | Wireless sensor device and method used for coal field fire zone parameter dynamic monitoring |
| CN105999584A (en) * | 2016-06-15 | 2016-10-12 | 广东红海湾发电有限公司 | Method and system for protecting coal yard against spontaneous combustion through boiler smoke |
| CN107656032A (en) * | 2017-09-28 | 2018-02-02 | 柳州凡科技有限公司 | A kind of computer based stockyard spontaneous combustionof coal detection means |
| CN107727825A (en) * | 2017-09-28 | 2018-02-23 | 柳州凡科技有限公司 | A kind of highly effective antirust and computer based stockyard spontaneous combustionof coal detection means |
| CN107727689A (en) * | 2017-09-28 | 2018-02-23 | 柳州凡科技有限公司 | A kind of antirust and computer based stockyard spontaneous combustionof coal detection means |
| CN111311870A (en) * | 2020-02-25 | 2020-06-19 | 中国矿业大学(北京) | Coal pile spontaneous combustion monitoring method and prevention and control system |
| CN111738585A (en) * | 2020-06-16 | 2020-10-02 | 国网重庆市电力公司 | Thermal power plant coal storage quantity grading early warning method for power grid dispatching |
| CN114746529A (en) * | 2019-07-31 | 2022-07-12 | 赛格英国科技有限公司 | Method and equipment for dry processing hot coal and coke |
-
2013
- 2013-05-03 CN CN 201320234537 patent/CN203242097U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070015A (en) * | 2015-08-10 | 2015-11-18 | 中国矿业大学 | Wireless sensor device and method used for coal field fire zone parameter dynamic monitoring |
| CN105999584A (en) * | 2016-06-15 | 2016-10-12 | 广东红海湾发电有限公司 | Method and system for protecting coal yard against spontaneous combustion through boiler smoke |
| CN107656032A (en) * | 2017-09-28 | 2018-02-02 | 柳州凡科技有限公司 | A kind of computer based stockyard spontaneous combustionof coal detection means |
| CN107727825A (en) * | 2017-09-28 | 2018-02-23 | 柳州凡科技有限公司 | A kind of highly effective antirust and computer based stockyard spontaneous combustionof coal detection means |
| CN107727689A (en) * | 2017-09-28 | 2018-02-23 | 柳州凡科技有限公司 | A kind of antirust and computer based stockyard spontaneous combustionof coal detection means |
| CN114746529A (en) * | 2019-07-31 | 2022-07-12 | 赛格英国科技有限公司 | Method and equipment for dry processing hot coal and coke |
| CN111311870A (en) * | 2020-02-25 | 2020-06-19 | 中国矿业大学(北京) | Coal pile spontaneous combustion monitoring method and prevention and control system |
| CN111311870B (en) * | 2020-02-25 | 2021-06-22 | 中国矿业大学(北京) | Coal pile spontaneous combustion monitoring method and prevention and control system |
| CN111738585A (en) * | 2020-06-16 | 2020-10-02 | 国网重庆市电力公司 | Thermal power plant coal storage quantity grading early warning method for power grid dispatching |
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| 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: 20131016 Termination date: 20180503 |