CN203730058U - Coal-mine gas extraction control system - Google Patents
Coal-mine gas extraction control system Download PDFInfo
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- CN203730058U CN203730058U CN201420075565.1U CN201420075565U CN203730058U CN 203730058 U CN203730058 U CN 203730058U CN 201420075565 U CN201420075565 U CN 201420075565U CN 203730058 U CN203730058 U CN 203730058U
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- extraction
- main line
- exploiting field
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- mine gas
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Abstract
The utility model belongs to the field of coal-mine gas extraction equipment and relates to a coal-mine gas extraction control system. The coal-mine gas extraction equipment comprises an extraction pump (2), an extraction main pipeline (6), a plurality of extraction-area main pipeline regulating valves (8) and a plurality of extraction-area branch pipelines (11). The coal-mine gas extraction control system is characterized in that a main pipeline detection regulation device connected with a controller (4) is mounted on the extraction main pipeline (6), an extraction area detection regulation device connected with the controller (4) is mounted on each extraction-area main pipeline regulating valve (8), and the controller (4) is connected with a frequency converter (3) which is connected with the extraction pump (2). An extraction main pipeline control procedure and an extraction area main pipeline control procedure are included. Extraction pump rotation speed and valve opening of each extraction area are adjusted through the controller and the frequency converter according to specific concentration of each extraction area, and consequently energy utilization rate is increased, energy waste is avoided, and usability of extracted gas is guaranteed.
Description
Technical field
Coal mine gas drainage control system, belongs to coal mine gas drainage apparatus field.
Background technology
The negative pressure that gas pumping utilizes plant equipment and pipe special to cause, by the gas pumping in coal seam out, is transported to ground or other safety places.By gas pumping, can reduce the gas density of mine gas emission rate and excavation, reduce gas hidden danger and various gas accident, be a preventive measure that guarantees safety in production.
Because China's coal geology is complicated, accumulate in the gas bearing capacity skewness in coal seam, when gas starts extraction, coal seam wall external pressure is greater than internal pressure, double action along with pressure, the vibrations of extraction pipeline in extraction process, the crack of coal seam wall is strengthened, and the air of wall outside, coal seam enters coal seam by the crack of coal seam wall, causes the concentration of the gas of extraction greatly to reduce.Now, due to extraction to the gas on ground because concentration is low, do not reach routine use standard, can only be discharged in atmosphere, increased the content of atmospheric environment percent of greenhouse gases.When the gas density that arrives when extraction is lower, extraction pump still carries out extraction with former rotating speed, causes the waste of electric energy.Meanwhile, the gas in coal seam, along with the variation of pressure is oozed out from crack, causes gas density within the scope of the wall external partial of coal seam to strengthen, and has the danger of gas explosion.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of and according to the concrete concentration in each exploiting field, the valve opening in exploiting field and extraction revolution speed are adjusted, guaranteed that the utilizability of gas extraction concentration saved the coal mine gas drainage control system of the energy simultaneously.
The utility model solves the technical scheme that its technical problem adopts: this coal mine gas drainage control system, comprise for carrying out one or more extraction pump of gas pumping, extraction pump connects extraction main line, extraction main line extends to the underground while and is connected with the exploiting field main line in many exploiting fields, every exploiting field main line many exploiting field branch lines that are simultaneously connected in parallel, it is characterized in that: the main line being connected with controller is installed on described extraction main line and detects adjusting device, at each exploiting field main line, the exploiting field being connected with controller is installed simultaneously and detects adjusting device, controller is connected with frequency converter, frequency converter is connected with described extraction pump, described controller is PLC.
Preferred: described main line detects adjusting device and comprises the extraction main line control valve being connected in series on extraction main line and be arranged on the one or more extraction main line sensors for extraction main line is detected on extraction main line.
Described exploiting field is detected adjusting device and is comprised the exploiting field main line control valve being connected in series on the main line of exploiting field and be arranged on the one or more exploiting field extraction main line sensors for exploiting field main line is detected on the main line of exploiting field.
The electromagnetic valve that is all connected in series with manual modulation valve or is connected with described controller on many described exploiting field branch lines.
Be provided with the wireless data transmission terminal DTU being connected with described controller.
Compared with prior art, the beneficial effect that the utility model has is:
By coal mine gas drainage control system of the present utility model, by controller and frequency converter, according to the concrete concentration in each exploiting field, the valve opening in exploiting field and extraction revolution speed are adjusted, improved the utilization rate of the energy, avoid the waste of the energy, guaranteed the utilizability of the gas that extraction goes out simultaneously.Use PLC to control as controller, intelligent degree is higher simultaneously, and staff can set each data voluntarily according to the actual conditions in different collieries simultaneously, and scalability is better, and the scope of application is wider.
Be provided with the wireless data transmission terminal DTU being connected with controller, staff can send control signal to controller by wireless data transmission terminal DTU, realize Long-distance Control, and the inquiry of respective line parameter, by wireless data transmission terminal DTU is set, facilitate aboveground and underground work personnel to understand down-hole monitored data everywhere, can realize Long-distance Control, saved manpower and materials simultaneously.
Accompanying drawing explanation
Fig. 1 is coal mine gas drainage control system structural representation.
Wherein: 1, extraction main line sensor 2, extraction pump 3, frequency converter 4, controller 5, data/address bus 6, extraction main line 7, extraction main line control valve 8, exploiting field main line control valve 9, exploiting field main line 10, exploiting field extraction main line sensor 11, exploiting field branch line 12, manual modulation valve 13, wireless data transmission terminal DTU.
The specific embodiment
Fig. 1 ~ 4th, most preferred embodiment of the present utility model, is described further below in conjunction with 1 ~ 4 pair of the utility model of accompanying drawing.
As shown in Figure 1, coal mine gas drainage control system of the present utility model comprises controller 4, frequency converter 3, wireless data transmission terminal DTU13 and a plurality of extraction pump 2 that is positioned at ground.Wireless data transmission terminal DTU13 is connected with controller 4, staff can send control signal to controller by wireless data transmission terminal DTU13, realize Long-distance Control, comprise the control realizing extraction pump 2 by controller 4, can to controller 4, send control command by wireless data transmission terminal DTU13 simultaneously, the parameter of inquiry respective line, by wireless data transmission terminal DTU13 is set, facilitate aboveground and underground work personnel to understand down-hole monitored data everywhere, can realize Long-distance Control, saved manpower and materials simultaneously.Controller 4 is connected with frequency converter 3, and for frequency converter 3 is controlled, frequency converter 3 is connected with extraction pump 2, for the rotating speed of extraction pump 2 is regulated.In actual applications, can be according to the quantity of extraction pump 2 and one or more frequency converter 3 of power setting, every corresponding one or more extraction pump 2 of controlling of frequency converter 3.All extraction pumps 2 are connected with extraction main line 6 on the ground simultaneously, and extraction main line 6 extends to exploiting field main line 9 corresponding in underground rear each exploiting field that is simultaneously connected in parallel.In each exploiting field, exploiting field main line 9 is connected in parallel many simultaneously and is positioned at the exploiting field branch line 11 in this exploiting field, and the gas that every exploiting field branch line 11 stretches in Nei Dui coal seam, coal seam directly extracts.
Extraction main line sensor 1 is installed in above-mentioned extraction main line 6, and extraction main line sensor 1 can articulate different sensor probes a plurality of parameters in extraction main line 6 are detected as pipe intrinsic parameters such as pressure, flow, temperature and as the composition of gas in the pipes such as gas, carbon monoxide, hydrogen sulfide.Extraction main line sensor 1 is connected with the input port of controller 4 by data/address bus 5, the real time data detecting is uploaded in controller 4, by controller 4, carry out relevant control or demonstration, extraction main line sensor 1 can be as required on the ground or underground one or more is set, at the interior extraction main line control valve 7 that is connected in series with of extraction main line 6 simultaneously, the output port of controller 4 and extraction main line control valve 7 are controlled, and can realize by extraction main line control valve 7 closure state of extraction main line 6.
In above-mentioned exploiting field main line 9, be connected in series with exploiting field extraction main line sensor 10, for a plurality of parameters in exploiting field main line 9, as pipe intrinsic parameters such as pressure, flow, temperature and as the composition of gas in the pipes such as gas, carbon monoxide, hydrogen sulfide, detect.Each exploiting field extraction main line sensor 10 is connected with the input port of controller 4 by data/address bus 5, and the real time data detecting is uploaded in controller 4, and exploiting field extraction main line sensor 10 can arrange one or more as required.At the interior exploiting field main line control valve 8 that is connected in series with of exploiting field main line 9 simultaneously, controller 4 is connected with all exploiting field main line control valve 8 simultaneously and controls its aperture.At the interior manual modulation valve 12 that is connected in series with respectively of every the exploiting field branch line 11 being connected with exploiting field main line 9.In the utility model, controller adopts PLC to realize.
When actual extraction, the gas in coal seam imports in extraction main line 6 by exploiting field branch line 11, exploiting field main line 9 successively simultaneously, by extraction main line 6, is evacuated on the ground and is processed.Controller 4 is controlled the pipeline in each minute exploiting field by exploiting field main line control flow, can to the duty of extraction main line 6 and each extraction pump 2, control by extraction main line control flow simultaneously, make whole control procedure more intelligent, the power ratio of each extraction pump 2 is more balanced, has avoided the waste of resource.
In actual applications under normal circumstances, after exploiting field main line control valve 8 in certain minute exploiting field is reduced by controller 4 its apertures of control because gas density reduces, overpressure decreases, gas density can rise gradually, when variable quantity that gas density rises surpasses after threshold value, controller 4 can be controlled this exploiting field main line control valve 8 apertures and increase, and now overpressure rises, gas density reduces, so circulation.In pipe, gas density is reduced to down in limited time and pressure, density and pressure during simultaneously in lower numerical value (this force value and concentration value can arrange voluntarily according to colliery actual conditions), now a kind of in several situations below appearance likely: duct sealing does not sternly cause gas leakage; Pipeline gas leakage; Gas is found time.Now can carry out alarm by controller 4, prompting staff investigates above-mentioned situation, removes a hidden danger to the full extent, avoids the generation of accident.
Specific works process and principle are as follows:
When real work, controller 4 is controlled one or more extraction pump 2 work, and the gas in exploiting field, down-hole is carried out to extraction.In extraction process, all kinds of parameters that are arranged in the 10 pairs of corresponding exploiting field main lines 9 of exploiting field extraction main line sensor on each exploiting field main line 9 are monitored, and the data that collect are uploaded in controller 4 by data/address bus 5, when the rate of change of the gas density rising (decline) in exploiting field main line 9 being detected surpasses the threshold value presetting, the aperture that controller 4 is controlled corresponding exploiting field main line control valves increases (reducing).
The exploiting field main line 9 in each exploiting field is intersected in extraction main line 6 simultaneously, the real-time parameter in extraction main line 1 of extraction main line sensor 1 being arranged on extraction main line 6 is monitored, the data that Jingjiang collects are uploaded in controller 4 by data/address bus, when the rate of change that the gas density in extraction main line 6 being detected rises surpasses the threshold value presetting, the aperture that controller 4 is controlled extraction main line control valve increases, if gas density continues to increase, controller 4 is controlled frequency converter 3, by frequency converter 3, improve the rotating speed of extraction pump 2, increase extraction ability, if gas density continues to increase, controller 4 increases the unlatching quantity of extraction pump 2, improve extraction power, to meet extraction demand.When gas density continues to reduce, the idea when control procedure of controller 4 and concentration increase, makes following control: first reduce the unlatching quantity of extraction pump 2, then reduce the rotating speed of extraction pump 2, finally reduce the aperture of extraction main line control valve successively.
The above, it is only preferred embodiment of the present utility model, be not the utility model to be done to the restriction of other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.
Claims (6)
1. coal mine gas drainage control system, comprise for carrying out one or more extraction pump (2) of gas pumping, extraction pump (2) connects extraction main line (6), extraction main line (6) extends to the underground while and is connected with the exploiting field main line (9) in many exploiting fields, every exploiting field main line (9) many exploiting field branch lines (11) that are simultaneously connected in parallel, it is characterized in that: the main line being connected with controller (4) is installed on described extraction main line (6) and detects adjusting device, at each exploiting field main line (9), the exploiting field being connected with controller (4) is installed simultaneously and detects adjusting device, controller (4) is connected with frequency converter (3), frequency converter (3) is connected with described extraction pump (2).
2. coal mine gas drainage control system according to claim 1, is characterized in that: described main line detects adjusting device and comprises the extraction main line control valve (7) being connected in series on extraction main line (6) and be arranged on the upper one or more extraction main line sensors (1) for extraction main line (6) is detected of extraction main line (6).
3. coal mine gas drainage control system according to claim 1, is characterized in that: described exploiting field is detected adjusting device and comprised the exploiting field main line control valve (8) being connected in series on exploiting field main line (9) and be arranged on the upper one or more exploiting field extraction main line sensors (10) for exploiting field main line (9) is detected of exploiting field main line (9).
4. coal mine gas drainage control system according to claim 1, is characterized in that: the electromagnetic valve that is all connected in series with manual modulation valve (12) or is connected with described controller (4) on described many exploiting field branch lines (11).
5. coal mine gas drainage control system according to claim 1, is characterized in that: be provided with the wireless data transmission terminal DTU(13 being connected with described controller (4)).
6. coal mine gas drainage control system according to claim 1, is characterized in that: described controller (4) is PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075565.1U CN203730058U (en) | 2014-02-21 | 2014-02-21 | Coal-mine gas extraction control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075565.1U CN203730058U (en) | 2014-02-21 | 2014-02-21 | Coal-mine gas extraction control system |
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| CN203730058U true CN203730058U (en) | 2014-07-23 |
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| CN201420075565.1U Expired - Fee Related CN203730058U (en) | 2014-02-21 | 2014-02-21 | Coal-mine gas extraction control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758561A (en) * | 2014-02-21 | 2014-04-30 | 淄博安益矿用设备有限公司 | Coal mine gas extraction control system and extraction control method |
| CN105299470A (en) * | 2014-07-28 | 2016-02-03 | 中国石油化工股份有限公司 | Methane monitoring automatic emptying device of middle-lower pressure gas pipe network |
| CN105736948A (en) * | 2014-12-12 | 2016-07-06 | 四川省科建煤炭产业技术研究院有限公司 | Coal seam gas extraction pipe control device and control method |
| CN109083676A (en) * | 2018-08-15 | 2018-12-25 | 山东安益矿用设备有限公司 | Coal mine gas extraction drill hole is grouped control technique |
| CN109488364A (en) * | 2018-11-27 | 2019-03-19 | 中国矿业大学 | A kind of hydraulic slotted liner technique is taken out with pressure replaces cooperative reinforcing gas pumping method |
| CN109681263A (en) * | 2018-12-26 | 2019-04-26 | 山东理工大学 | Exploiting field main line control method in a kind of water ring vacuum pump extraction coal mine gas |
| CN113217084A (en) * | 2021-06-08 | 2021-08-06 | 安徽中智新能科技有限责任公司 | Gas extraction system and method based on intelligent regulation and control technology |
-
2014
- 2014-02-21 CN CN201420075565.1U patent/CN203730058U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758561A (en) * | 2014-02-21 | 2014-04-30 | 淄博安益矿用设备有限公司 | Coal mine gas extraction control system and extraction control method |
| CN105299470A (en) * | 2014-07-28 | 2016-02-03 | 中国石油化工股份有限公司 | Methane monitoring automatic emptying device of middle-lower pressure gas pipe network |
| CN105736948A (en) * | 2014-12-12 | 2016-07-06 | 四川省科建煤炭产业技术研究院有限公司 | Coal seam gas extraction pipe control device and control method |
| CN109083676A (en) * | 2018-08-15 | 2018-12-25 | 山东安益矿用设备有限公司 | Coal mine gas extraction drill hole is grouped control technique |
| CN109488364A (en) * | 2018-11-27 | 2019-03-19 | 中国矿业大学 | A kind of hydraulic slotted liner technique is taken out with pressure replaces cooperative reinforcing gas pumping method |
| CN109681263A (en) * | 2018-12-26 | 2019-04-26 | 山东理工大学 | Exploiting field main line control method in a kind of water ring vacuum pump extraction coal mine gas |
| CN113217084A (en) * | 2021-06-08 | 2021-08-06 | 安徽中智新能科技有限责任公司 | Gas extraction system and method based on intelligent regulation and control technology |
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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 |
Granted publication date: 20140723 Termination date: 20180221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |