CN109372574A - Water ring vacuum pump and extraction main line control method in a kind of gas discharge in mine - Google Patents
Water ring vacuum pump and extraction main line control method in a kind of gas discharge in mine Download PDFInfo
- Publication number
- CN109372574A CN109372574A CN201811596028.0A CN201811596028A CN109372574A CN 109372574 A CN109372574 A CN 109372574A CN 201811596028 A CN201811596028 A CN 201811596028A CN 109372574 A CN109372574 A CN 109372574A
- Authority
- CN
- China
- Prior art keywords
- main line
- vacuum pump
- extraction main
- water ring
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
Abstract
The present invention provides water ring vacuum pump and extraction main line control method in a kind of gas discharge in mine, using following steps: 1) extraction main line methane Concentration Measurement, 2) variation ofgas density rate calculates, 3) calculating and control of controlling opening of valve, 4) water ring vacuum pump Rotational Speed of Asynchronous Motor is calculated and is controlled, it is characterized by: detecting extraction main line gas density using gas concentration sensor in step 1)；In step 2), extraction main line variation ofgas density rate is calculated；In step 3), it is provided with the regulating valve of linear flow characteristic in extraction main line, is calculated and control valve aperture according to variation ofgas density；In step 4), the Rotational Speed of Asynchronous Motor of driving water ring vacuum pump is calculated and controlled according to variation ofgas density.The invention has the advantages that: extraction main line control valve opening and water ring vacuum pump Rotational Speed of Asynchronous Motor can be controlled according to extraction main line variation ofgas density, not only energy conservation but also the utility value that extraction goes out gas can have been improved.
Description
Technical field
The present invention relates to a kind of water ring vacuum pump extraction coal mine gas control methods, take out more particularly to a kind of coal mine gas
Put middle water ring vacuum pump and extraction main line control method.
Background technique
Coal mine gas drainage is exactly to gather region to coal seam and gas to drill, and drilling is connect on dedicated pipeline, finally
It is pooled in extraction main line, the gas in coal seam and goaf is evacuated to ground with extraction equipments such as water ring vacuum pumps.Extraction
Gas is not only to reduce gas emission in recovery process, prevents gas exceeding limit and accumulation, pre- anti-gas explosion and coal with watt
This protrudes the important measures of accident, can also turn bane into boon, the resource as coal association is developed and used.
The methane gas of extraction is transported to air accumulator by water ring vacuum pump after moisture trap, in case using.In gas
In extraction, gas density can change at any time in main line.When gas density is too low in main line, if water ring vacuum pump is asynchronous
Motor also keeps original revolving speed, then just waste much electricity.When gas density is too low in main line, if extraction is responsible for
Valve opening remains unchanged in road, through water ring vacuum pump extract out methane gas concentration requirement will be not achieved, often by
It is directly discharged in atmosphere, wastes the energy, and increase greenhouse effects.Therefore, in extraction main line variation ofgas density
How extraction main line valve opening and water ring vacuum pump Rotational Speed of Asynchronous Motor to be controlled accordingly, for energy conservation and is mentioned
The utility value that high extraction goes out gas is of great significance.
Summary of the invention
The object of the present invention is to provide water ring vacuum pump in a kind of gas discharge in mine and extraction main line control method,
Technical solution are as follows: using following steps: 1) extraction main line methane Concentration Measurement, 2) calculating of variation ofgas density rate, 3) it adjusts
The calculating and control of valve opening, 4) water ring vacuum pump Rotational Speed of Asynchronous Motor calculates and control, it is characterised in that: in step 1),
In k-th of sampling period of PLC control (5), extraction main line (7) gas density is detected using gas concentration sensor (1), if
For s (k)；In step 2), if extraction main line (7) gas density is s (k-1) in (k-1) a sampling period, then adopt for k-th
Variation ofgas density rate is e (k)=[s (k)-s (k-1)]/s (k-1) in the sample period；In step 3), in extraction main line (7)
It is provided with the regulating valve (8) of linear flow characteristic, is calculated as p in k-th of sampling period regulating valve (8) aperture of PLC control (5)
(k)=p (k-1) * [1+e (k)], wherein p (k-1) is regulating valve (8) aperture in (k-1) a sampling period, and 0 < p (k)
≤ 100%, it is contemplated that minimal valve aperture threshold value p is arranged in the safety of gas drainage under suction0, as control valve opening calculating value p (k)
Less than or equal to minimum aperture threshold value p0When, enable p (k)=p0, regulating valve (8) aperture is adjusted to p (k)；In step 4), water
Ring vacuum pump (2) is driven by the asynchronous machine (3) of frequency control, in k-th of sampling period of PLC control (5), asynchronous machine
(3) revolving speed is calculated as n (k)=n (k-1) * [1+c0* e (k)], wherein n (k-1) is asynchronous machine in (k-1) a sampling period
(3) revolving speed, c0It is constant, the value between 0.8~1.3 for rotational speed regulation coefficient, it is contemplated that the safety of gas drainage under suction, if
Set asynchronous machine minimum speed threshold value n0, when Rotational Speed of Asynchronous Motor calculated value n (k) is less than or equal to asynchronous machine minimum speed threshold value
n0When, enable n (k)=n0, asynchronous machine (3) revolving speed is adjusted to n (k).
Compared with prior art, the present invention its advantage is that: extraction can be controlled according to extraction main line variation ofgas density
Main line control valve opening and water ring vacuum pump Rotational Speed of Asynchronous Motor, not only energy conservation but also the utility value that extraction goes out gas can be improved.
Detailed description of the invention
Fig. 1 is water ring vacuum pump and extraction main line system structure diagram in gas discharge in mine of the invention.
Fig. 2 is water ring vacuum pump and extraction main line control flow chart in gas discharge in mine of the invention.
Fig. 3 is water ring vacuum pump and extraction supervisor's pipelines control structure in gas discharge in mine of the invention.
Wherein: 1, gas concentration sensor 2, water ring vacuum pump 3, asynchronous machine 4, frequency converter 5, controller (PLC) 6, number
According to bus 7, extraction main line 8, the regulating valve 9 of linear flow characteristic, exploiting field main line 10, exploiting field branch line 11, manually tune
Save valve.
Specific embodiment
Fig. 1~3 are one embodiment of the present of invention, and below with reference to Fig. 1~3, the invention will be described in further detail.
In gas discharge in mine, Induction Motor-Driven of the water ring vacuum pump on ground by frequency control, water ring vacuum pump company
Extraction main line is connect, extraction main line extends to underground and a plurality of exploiting field piping connection.It is dense that gas is installed in extraction main line
Spend the regulating valve of sensor and linear flow characteristic.Using PLC centralized control water ring vacuum pump and extraction main line, i.e. extraction master
The methane Concentration Measurement data of pipeline are transferred to PLC, and PLC calculates change rate of concentration, calculate regulating valve according to change rate of concentration and open
Degree and Rotational Speed of Asynchronous Motor.In view of the safety of gas drainage under suction, minimal valve aperture threshold value is set and asynchronous machine minimum turns
Fast threshold value.
Step 1): it in k-th of sampling period of PLC control (5), is responsible for using gas concentration sensor (1) detection extraction
Road (7) gas density, is set as s (k).
Step 2): it sets extraction main line (7) gas density in (k-1) a sampling period and is then sampled for k-th as s (k-1)
Variation ofgas density rate is e (k)=[s (k)-s (k-1)]/s (k-1) in period.
Step 3): being provided with the regulating valve (8) of linear flow characteristic in extraction main line (7), in PLC control (5)
K-th of sampling period regulating valve (8) aperture is calculated as p (k)=p (k-1) * [1+e (k)], and wherein p (k-1) is that the (k-1) is a adopts
Regulating valve (8) aperture in the sample period, and 0 < p (k)≤100%, it is contemplated that the safety of gas drainage under suction, setting minimal valve are opened
Spend threshold value p0, when control valve opening calculating value p (k) is less than or equal to minimum aperture threshold value p0When, enable p (k)=p0, to regulating valve (8)
Aperture is adjusted to p (k): guaranteeing valve minimum aperture threshold value p0On the basis of, as extraction main line gas density s (k)
When rising, e (k) > 0, so valve opening accordingly becomes larger；When extraction main line gas density s (k) decline, e (k) < 0, so
Valve opening accordingly reduces.
Step 4): water ring vacuum pump (2) is driven by the asynchronous machine (3) of frequency control, and k-th in PLC control (5) is adopted
Sample period, asynchronous machine (3) revolving speed are calculated as n (k)=n (k-1) * [1+c0* e (k)], wherein n (k-1) is that the (k-1) is a adopts
Asynchronous machine (3) revolving speed, c in the sample period0It is constant, the value between 0.8~1.3, it is contemplated that gas for rotational speed regulation coefficient
Asynchronous machine minimum speed threshold value n is arranged in the safety of extraction0, when Rotational Speed of Asynchronous Motor calculated value n (k) is less than or equal to asynchronous
Motor minimum speed threshold value n0When, enable n (k)=n0, asynchronous machine (3) revolving speed is adjusted to n (k): guaranteeing asynchronous electricity
Machine minimum speed threshold value n0On the basis of, when extraction main line gas density s (k) rises, e (k) > 0, so Rotational Speed of Asynchronous Motor
Accordingly become larger；When extraction main line gas density s (k) decline, e (k) < 0, so Rotational Speed of Asynchronous Motor accordingly reduces.
In the present embodiment, using the gate valve with linear flow characteristic, minimal valve aperture threshold value p is set0It is 20%,
As long as i.e. mash gas extraction, regardless of how low gas density is in extraction main line, valve opening is at least 20%.Asynchronous machine is set
Minimum speed threshold value n0It is the 30% of asynchronous machine rated speed, as long as i.e. mash gas extraction, regardless of in extraction main line, gas is dense
How degree changes, and Rotational Speed of Asynchronous Motor is at least the 30% of rated speed.Asynchronous machine is being calculated according to variation ofgas density rate
Rotational speed regulation coefficient c when revolving speed0Take 1.1.
In gas discharge in mine, according to extraction main line variation ofgas density come to water ring vacuum pump asynchronous machine and pumping
Main line control valve is adopted to be controlled, not only energy conservation but also the utility value that extraction goes out gas can be improved.The invention can be true in water ring
Empty pumping, which is put in the bargh of coal mine gas gas, to be applied and promotes.
Claims (1)
1. water ring vacuum pump and extraction main line control method in a kind of gas discharge in mine, using following steps: 1) extraction master
Pipeline methane Concentration Measurement, 2) variation ofgas density rate calculates, the 3) calculating and control of controlling opening of valve, 4) water ring vacuum pump
Rotational Speed of Asynchronous Motor calculate and control, it is characterised in that: in step 1), PLC control (5) k-th of sampling period, using watt
This concentration sensor (1) detects extraction main line (7) gas density, is set as s (k)；In step 2), if (k-1) a sampling week
Interim extraction main line (7) gas density is s (k-1), then variation ofgas density rate is e (k)=[s in k-th of sampling period
(k)-s(k-1)]/s(k-1)；In step 3), the regulating valve (8) of linear flow characteristic is provided in extraction main line (7),
K-th of sampling period regulating valve (8) aperture of PLC control (5) is calculated as p (k)=p (k-1) * [1+e (k)], wherein p (k-1)
For regulating valve (8) aperture in (k-1) a sampling period, and 0 < p (k)≤100%, it is contemplated that the safety of gas drainage under suction,
Minimal valve aperture threshold value p is set0, when control valve opening calculating value p (k) is less than or equal to minimum aperture threshold value p0When, enable p (k)=
p0, regulating valve (8) aperture is adjusted to p (k)；In step 4), water ring vacuum pump (2) by frequency control asynchronous machine
(3) it drives, in k-th of sampling period of PLC control (5), asynchronous machine (3) revolving speed is calculated as n (k)=n (k-1) * [1+c0*e
(k)], wherein n (k-1) is asynchronous machine (3) revolving speed in (k-1) a sampling period, c0It is constant for rotational speed regulation coefficient,
The value between 0.8~1.3, it is contemplated that asynchronous machine minimum speed threshold value n is arranged in the safety of gas drainage under suction0, when asynchronous electricity
Machine revolving speed calculated value n (k) is less than or equal to asynchronous machine minimum speed threshold value n0When, enable n (k)=n0, to asynchronous machine (3) revolving speed
It is adjusted to n (k).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811596028.0A CN109372574B (en) | 2018-12-26 | 2018-12-26 | Water ring vacuum pump and extraction main line control method in a kind of gas discharge in mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811596028.0A CN109372574B (en) | 2018-12-26 | 2018-12-26 | Water ring vacuum pump and extraction main line control method in a kind of gas discharge in mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109372574A true CN109372574A (en) | 2019-02-22 |
| CN109372574B CN109372574B (en) | 2019-10-29 |
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ID=65371666
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811596028.0A Active CN109372574B (en) | 2018-12-26 | 2018-12-26 | Water ring vacuum pump and extraction main line control method in a kind of gas discharge in mine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878155A (en) * | 2020-07-31 | 2020-11-03 | 潍坊研翔仪器仪表科技有限公司 | Coal mine low-concentration gas power generation device |
| CN112096447A (en) * | 2020-10-24 | 2020-12-18 | 淄博水环真空泵厂有限公司 | Coal mine gas extraction system pipeline negative pressure control system and 'prediction + increment PID' negative pressure control method thereof |
| CN112343646A (en) * | 2020-10-15 | 2021-02-09 | 中国矿业大学 | Intelligent regulation and control system and method for extracting high-concentration gas from coal mine |
| CN113653643A (en) * | 2021-08-19 | 2021-11-16 | 中国矿业大学 | Cost-benefit intelligent regulation and control method for adding damping fluid of water ring vacuum pump for mine |
| CN114635848A (en) * | 2020-12-16 | 2022-06-17 | 莱斯特里兹泵吸有限责任公司 | Method for conveying fluid by screw pump and screw pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA67046A (en) * | 2003-06-10 | 2004-06-15 | Inst Of Geology And Geo Chemis | Well unit for massif degassing |
| CN201027546Y (en) * | 2007-02-15 | 2008-02-27 | 杨海 | Mining-used mobile gas variable pumping station |
| CN201273196Y (en) * | 2008-12-12 | 2009-07-15 | 淄博水环真空泵厂有限公司 | Intelligent mining movable gas pump station |
| CN101749044A (en) * | 2008-12-12 | 2010-06-23 | 淄博水环真空泵厂有限公司 | Intelligent movable gas pumping station for mine |
| CN202250749U (en) * | 2011-07-01 | 2012-05-30 | 陕西斯达煤矿安全装备有限公司 | Suction and discharging control system for movable gas suction and discharging pump station |
| CN203463144U (en) * | 2013-09-04 | 2014-03-05 | 国投新登郑州煤业有限公司 | Automatic gas drainage controlling and monitoring system |
| 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 |
-
2018
- 2018-12-26 CN CN201811596028.0A patent/CN109372574B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA67046A (en) * | 2003-06-10 | 2004-06-15 | Inst Of Geology And Geo Chemis | Well unit for massif degassing |
| CN201027546Y (en) * | 2007-02-15 | 2008-02-27 | 杨海 | Mining-used mobile gas variable pumping station |
| CN201273196Y (en) * | 2008-12-12 | 2009-07-15 | 淄博水环真空泵厂有限公司 | Intelligent mining movable gas pump station |
| CN101749044A (en) * | 2008-12-12 | 2010-06-23 | 淄博水环真空泵厂有限公司 | Intelligent movable gas pumping station for mine |
| CN202250749U (en) * | 2011-07-01 | 2012-05-30 | 陕西斯达煤矿安全装备有限公司 | Suction and discharging control system for movable gas suction and discharging pump station |
| CN203463144U (en) * | 2013-09-04 | 2014-03-05 | 国投新登郑州煤业有限公司 | Automatic gas drainage controlling and monitoring system |
| 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 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878155A (en) * | 2020-07-31 | 2020-11-03 | 潍坊研翔仪器仪表科技有限公司 | Coal mine low-concentration gas power generation device |
| CN111878155B (en) * | 2020-07-31 | 2022-08-12 | 山西兰能煤层气开发有限公司 | Coal mine low-concentration gas power generation device |
| CN112343646A (en) * | 2020-10-15 | 2021-02-09 | 中国矿业大学 | Intelligent regulation and control system and method for extracting high-concentration gas from coal mine |
| CN112343646B (en) * | 2020-10-15 | 2021-08-27 | 中国矿业大学 | Intelligent regulation and control system and method for extracting high-concentration gas from coal mine |
| CN112096447A (en) * | 2020-10-24 | 2020-12-18 | 淄博水环真空泵厂有限公司 | Coal mine gas extraction system pipeline negative pressure control system and 'prediction + increment PID' negative pressure control method thereof |
| CN112096447B (en) * | 2020-10-24 | 2021-06-15 | 淄博水环真空泵厂有限公司 | Coal mine gas extraction system pipeline negative pressure control system and 'prediction + increment PID' negative pressure control method thereof |
| CN114635848A (en) * | 2020-12-16 | 2022-06-17 | 莱斯特里兹泵吸有限责任公司 | Method for conveying fluid by screw pump and screw pump |
| CN113653643A (en) * | 2021-08-19 | 2021-11-16 | 中国矿业大学 | Cost-benefit intelligent regulation and control method for adding damping fluid of water ring vacuum pump for mine |
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| CN109372574B (en) | 2019-10-29 |
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