CN105822338B - A kind of coal mine gas drainage control system and control method - Google Patents
A kind of coal mine gas drainage control system and control method Download PDFInfo
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- CN105822338B CN105822338B CN201610160362.6A CN201610160362A CN105822338B CN 105822338 B CN105822338 B CN 105822338B CN 201610160362 A CN201610160362 A CN 201610160362A CN 105822338 B CN105822338 B CN 105822338B
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- 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
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- 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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pipeline Systems (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a kind of coal mine gas drainage control system and control methods, a branched pipe gas indicator has been arranged in series on each extraction branched pipe, it connects on each extraction branch pipe a branch pipe gas indicator, supervisor's gas indicator is in series on extraction supervisor, corresponding extraction branch pipe is accessed after each extraction branched pipe of each mining region is in parallel, access extraction supervisor after the extraction branch pipe of different zones is in parallel, branch's electrically-controlled valve is additionally provided on each extraction branched pipe, a branch pipe electrically-controlled valve is also equipped on each extraction branch pipe, gas suction pump is connected with extraction supervisor, the present invention carries out extraction control from different perspectives, under conditions of capable of fully ensuring that gas drainage under suction safety, any adjusting in real time is carried out according to the gas amount of each pipeline completely, the present invention is provided with equalizing valve door, it is dense to can be improved gas The detection accuracy of degree improves the precision of gas drainage control, more guarantees the safety of coal mining.
Description
Technical field
The invention belongs to gas drainage technique fields, more particularly, to a kind of coal mine gas drainage control system and controlling party
Method.
Background technique
China's high methane and coal and gas outburst mine ratio are up to 51%, due to the mining influence by mined bed, largely
Gas pours into goaf, and gas at upper corner is caused to transfinite, and seriously affects mine and normally exploits.It is gathered for goaf residual gas
Security risk caused by problem.Therefore, gas drainage is quite important for coal mining, and quality directly affects coal
The safety and stability of mine exploitation.Currently, the efficient extraction control technology of coal bed gas uses modern automation field Dynamic matrix control
Technology is adjusted the aperture of methane gas extraction pipeline electrically operated valve by intelligence adjustment, self-correcting and adaptive algorithm, from
And extraction flow is controlled, realize the intelligent control of coal bed gas extraction amount.It is installed on the gas pumping pipeline branch road of ground pump station
Detection sensor and electric control valve are adjusted and are controlled to electrically operated valve by PLC outstation.
But although current gas drainage control has begun the gradually progress intelligentized control method stage, only
It can be realized the automatic open close of valve, it can not be under conditions of guaranteeing gas drainage under suction safety, completely according to watt of each pipeline
This amount carries out any adjusting in real time, can guarantee that extraction is thorough therefore, it is necessary to develop one kind and can save extraction power, mention
The gas drainage control system of high extraction efficiency, to meet the needs of modern intelligent gas extraction.
Summary of the invention
Present invention problem in view of the prior art, provides a kind of coal mine gas extraction control system and extraction control method,
It carries out extraction control from different perspectives, under conditions of capable of fully ensuring that gas drainage under suction safety, completely according to each pipeline
Gas amount carries out any adjusting in real time.
To achieve the above object, the invention provides the following technical scheme: a kind of coal mine gas drainage control system, feature
It is comprising gas drainage pump, extraction supervisor, extraction branch pipe, extraction branched pipe, branched pipe gas indicator, branch pipe gas
Detector, supervisor's gas indicator and controller, wherein divide described in being arranged in series one on each extraction branched pipe
Branch pipe gas indicator, branch pipe gas indicator of connecting on each extraction branch pipe are connected on the extraction supervisor
There is supervisor's gas indicator, accesses the corresponding extraction after each extraction branched pipe of each mining region is in parallel
Branch pipe accesses the extraction supervisor, is additionally provided with branch's electricity on each extraction branched pipe after the extraction branch pipe of different zones is in parallel
Valve is controlled, a branch pipe electrically-controlled valve is also equipped on each extraction branch pipe, the gas suction pump is connected with extraction supervisor, institute
State branched pipe gas indicator, branch pipe gas indicator, supervisor's gas indicator, branch's electrically-controlled valve and branch pipe electrically-controlled valve and institute
State controller connection.
Further, preferably, the invention also includes data storage, the data storage is stored with and each extraction
Gas flow and the corresponding given threshold of gas pressure in branched pipe and extraction branch pipe；It is additionally provided on each extraction branched pipe
Branch flow sensor and branch's gas pressure sensor are additionally provided with branch flow sensor tube and branch pipe on each extraction branch pipe
Gas pressure sensor, the extraction branch pipe are N number of, wherein N >=2, extraction branched pipe are M, M >=2, when i-th of extraction branch
The gas density that branch pipe gas indicator on pipe detects be less than extraction branch pipe in gas drainage pressure and flow it is corresponding
When given threshold, and the gas density that the branched pipe gas indicator on M extraction branched pipe detects is respectively less than extraction branch
When the corresponding given threshold of gas drainage pressure and flow in pipe, the branch pipe electrically-controlled valve on i-th of extraction branch pipe is just by institute
It states controller to be closed, when the gas density that the branch pipe gas indicator on i-th of extraction branch pipe detects is greater than the correspondence
Given threshold when, the branch pipe electrically-controlled valve on i-th of extraction branch pipe is opened by the controller, wherein 1≤i≤N；
It is taken out when the gas density that the branched pipe gas indicator on k-th of extraction branched pipe detects is less than the gas in extraction branched pipe
When adopting pressure and the corresponding given threshold of flow, branched pipe electrically-controlled valve on k-th of extraction branched pipe by the controller into
Row is closed, when the gas density that the branched pipe gas indicator on k-th of extraction branch pipe detects is greater than the correspondence given threshold
When, the branched pipe electrically-controlled valve on k-th of extraction branched pipe is opened by the controller, wherein 1≤k≤N.
Further, preferably, further including warning circuit and display circuit, when the branch pipe electrically-controlled valve or branched pipe are automatically controlled
When the open/close states of valve change, the warning circuit issues alarm, and corresponding display area meeting on the display circuit
There is flashing display certain time.
Further, preferably, the front tube of the branched pipe gas indicator or branch pipe gas indicator road
It is provided with equalizing valve door, wherein the equalizing valve door includes valve body, bellmouth, outer ventilation net, interior ventilation net and centre
Net, the central axis of the valve body are provided with bellmouth, and the small tapered end of the bellmouth is examined close to the branched pipe gas
Survey device or branch pipe gas indicator setting, be disposed with from large awl end to small tapered end in the bellmouth outer ventilation net,
Mid-level net and interior ventilation net, and the mesh for ventilating outside online is staggered with the mesh on the mid-level net, on the mid-level net
Mesh be staggered with the online mesh of the interior ventilation.
Further, preferably, the diameter of the outer online mesh of ventilating is less than the mesh on the mid-level net
Diameter, the mesh size on the mid-level net are less than the diameter of the online mesh of the interior ventilation.
Further, preferably, the invention also includes wireless transceiver, the wireless transceiver is connect with controller, is led to
The wireless transceiver is crossed to realize the long-range monitoring with gas drainage and control.
In addition, the present invention also provides the control method that a kind of coal mine gas drainage control system carries out extraction, feature
Be: itself the following steps are included:
(1) when extraction is initial, all branch pipe electrically-controlled valves and branched pipe electrically-controlled valve are in open state, and the gas is taken out
It adopts pump to work with maximum power, if it is necessary, settable auxiliary gas extraction pump is imitated to increase gas drainage rate and extraction
Fruit；
(2) when controller receives the gas density that the branched pipe gas indicator on k-th of extraction branched pipe detects
Point when less than gas drainage pressure and the corresponding given threshold of flow in extraction branched pipe, on k-th of extraction branched pipe
Branch pipe electrically-controlled valve is closed by the controller；When the gas that the branch pipe gas indicator on i-th of extraction branch pipe detects
When concentration is less than gas drainage pressure and flow corresponding given threshold in extraction branch pipe, and dividing on M extraction branched pipe
Gas drainage pressure that the gas density that branch pipe gas indicator detects is respectively less than in extraction branched pipe and flow is corresponding sets
When determining threshold value, the branch pipe electrically-controlled valve on i-th of extraction branch pipe is just closed by the controller；Otherwise, extraction branched pipe
Or the electric control valve on extraction branch pipe is constantly in open state；
(3) if the open/close states of i-th of branch pipe electrically-controlled valve or k-th of branched pipe electrically-controlled valve change, electricity of alarming
Road can issue corresponding alarm, and display circuit will do it corresponding flashing display；
(4) number that controller is opened according to branched pipe electrically-controlled valve and branch pipe electrically-controlled valve, to the power of gas drainage pump into
Row real-time control.
Compared with prior art, the beneficial effects of the present invention are:
The present invention carries out extraction control from different perspectives, under conditions of capable of fully ensuring that gas drainage under suction safety, complete root
Any adjusting in real time is carried out according to the gas amount of each pipeline, the present invention is provided with equalizing valve door, can be improved the inspection of gas density
Precision is surveyed, the precision of gas drainage control is improved, more guarantees the safety of coal mining.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of coal mine gas drainage control system of the present invention；
Fig. 2 is a kind of structural schematic diagram of the equalizing valve of coal mine gas drainage control system of the present invention；
Wherein, 1- gas drainage pumps, 2- extraction supervisor, 3- extraction branch pipe, 4- extraction branched pipe, 5- branch pipe electrically-controlled valve, 6-
Branch pipe gas indicator, 7- equalizing valve, 8- branched pipe electrically-controlled valve, 9- branched pipe gas indicator, 10- are responsible for gas indicator,
11- valve body, net of ventilating in 12-, 13- mid-level net, net of ventilating outside 14-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of coal mine gas drainage control system and extraction controlling party
Method, which is characterized in that it includes gas drainage pump 1, extraction supervisor 2, extraction branch pipe 3, extraction branched pipe 4, the inspection of branched pipe gas
Survey device 9, branch pipe gas indicator 6, supervisor's gas indicator 10 and controller, wherein go here and there on each extraction branched pipe
Connection is provided with the branched pipe gas indicator, branch pipe gas indicator of connecting on each extraction branch pipe,
Supervisor's gas indicator is in series on the extraction supervisor, after each extraction branched pipe of each mining region is in parallel
The corresponding extraction branch pipe is accessed, the extraction supervisor, each extraction branch are accessed after the extraction branch pipe of different zones is in parallel
It is additionally provided with branch's electrically-controlled valve 8 on pipe, a branch pipe electrically-controlled valve 5, the gas suction pump 1 are also equipped on each extraction branch pipe
It connects with extraction supervisor 2, the branched pipe gas indicator, branch pipe gas indicator, supervisor's gas indicator, branch's electricity
Control valve and branch pipe electrically-controlled valve are connect with the controller.
In the present embodiment, the invention also includes data storage, the data storage is stored with and each extraction point
Gas flow and the corresponding given threshold of gas pressure in branch pipe and extraction branch pipe；It is additionally provided on each extraction branched pipe point
Branch flow sensor and branch's gas pressure sensor are additionally provided with branch flow sensor tube and branch pipe watt on each extraction branch pipe
This pressure sensor, the extraction branch pipe are N number of, wherein N >=2, extraction branched pipe are M, M >=2, when i-th of extraction branch pipe
On the gas density that detects of branch pipe gas indicator be less than the gas drainage pressure in extraction branch pipe and flow is corresponding sets
When determining threshold value, and the gas density that the branched pipe gas indicator on M extraction branched pipe detects is respectively less than extraction branched pipe
When interior gas drainage pressure and the corresponding given threshold of flow, the branch pipe electrically-controlled valve on i-th of extraction branch pipe is just by described
Controller is closed, when the gas density that the branch pipe gas indicator on i-th of extraction branch pipe detects is corresponding greater than this
When given threshold, the branch pipe electrically-controlled valve on i-th of extraction branch pipe is opened by the controller, wherein 1≤i≤N；When
The gas density that branched pipe gas indicator on k-th of extraction branched pipe detects is less than the gas drainage in extraction branched pipe
When pressure and the corresponding given threshold of flow, the branched pipe electrically-controlled valve on k-th of extraction branched pipe is carried out by the controller
It closes, when the gas density that the branched pipe gas indicator on k-th of extraction branch pipe detects is greater than the correspondence given threshold,
Branched pipe electrically-controlled valve on k-th of extraction branched pipe is opened by the controller, wherein 1≤k≤N.
In addition, the invention also includes warning circuit and display circuit, when the branch pipe electrically-controlled valve or branched pipe electrically-controlled valve
When open/close states change, the warning circuit issues alarm, and corresponding display area will appear on the display circuit
Flashing display certain time.The front tube of the branched pipe gas indicator or branch pipe gas indicator road is provided with
Equalizing valve door, wherein as shown in Fig. 2, the equalizing valve door includes valve body 11, bellmouth, outer ventilation net 14, interior ventilation net
12 and mid-level net 13, the central axis of the valve body is provided with bellmouth, and the small tapered end of the bellmouth is close to described point
Branch pipe gas indicator or branch pipe gas indicator setting, the bellmouth is interior to be disposed with from large awl end to small tapered end
Outer ventilation net, mid-level net and interior ventilation net, and the mesh for ventilating outside online is staggered with the mesh on the mid-level net, it is described
Mesh on mid-level net is staggered with the interior online mesh of ventilating.The diameter of the online mesh of the outer ventilation is small
It is less than the online mesh of the interior ventilation in the mesh size in the mesh diameter size on the mid-level net, the mid-level net
Diameter.The invention also includes wireless transceiver, the wireless transceiver is connect with controller, passes through the wireless transceiver
Realize the long-range monitoring and control with gas drainage.
In addition, the present invention also provides the control method that a kind of coal mine gas drainage control system carries out extraction, feature
Be: itself the following steps are included:
(1) when extraction is initial, all branch pipe electrically-controlled valves and branched pipe electrically-controlled valve are in open state, and the gas is taken out
It adopts pump to work with maximum power, if it is necessary, settable auxiliary gas extraction pump is imitated to increase gas drainage rate and extraction
Fruit；
(2) when controller receives the gas density that the branched pipe gas indicator on k-th of extraction branched pipe detects
Point when less than gas drainage pressure and the corresponding given threshold of flow in extraction branched pipe, on k-th of extraction branched pipe
Branch pipe electrically-controlled valve is closed by the controller；When the gas that the branch pipe gas indicator on i-th of extraction branch pipe detects
When concentration is less than gas drainage pressure and flow corresponding given threshold in extraction branch pipe, and dividing on M extraction branched pipe
Gas drainage pressure that the gas density that branch pipe gas indicator detects is respectively less than in extraction branched pipe and flow is corresponding sets
When determining threshold value, the branch pipe electrically-controlled valve on i-th of extraction branch pipe is just closed by the controller；Otherwise, extraction branched pipe
Or the electric control valve on extraction branch pipe is constantly in open state；
(3) if the open/close states of i-th of branch pipe electrically-controlled valve or k-th of branched pipe electrically-controlled valve change, electricity of alarming
Road can issue corresponding alarm, and display circuit will do it corresponding flashing display；
(4) number that controller is opened according to branched pipe electrically-controlled valve and branch pipe electrically-controlled valve, to the power of gas drainage pump into
Row real-time control.
The present invention carries out extraction control from different perspectives, under conditions of capable of fully ensuring that gas drainage under suction safety, complete root
Any adjusting in real time is carried out according to the gas amount of each pipeline, the present invention is provided with equalizing valve door, can be improved the inspection of gas density
Precision is surveyed, the precision of gas drainage control is improved, more guarantees the safety of coal mining.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of coal mine gas drainage control system, which is characterized in that it include gas drainage pump, extraction supervisor, extraction branch pipe,
Extraction branched pipe, branched pipe gas indicator, branch pipe gas indicator, supervisor's gas indicator and controller, wherein Mei Gesuo
It states and has been arranged in series the branched pipe gas indicator on extraction branched pipe, connect one on each extraction branch pipe
A branch pipe gas indicator, the extraction are responsible for and are in series with supervisor's gas indicator, each institute of each mining region
The corresponding extraction branch pipe is accessed after stating extraction branched pipe parallel connection, accesses the extraction after the extraction branch pipe of different zones is in parallel
It is responsible for, is additionally provided with branch's electrically-controlled valve on each extraction branched pipe, a branch pipe electrically-controlled valve is also equipped on each extraction branch pipe,
The gas suction pump is connected with extraction supervisor, the branched pipe gas indicator, branch pipe gas indicator, supervisor's gas
Detector, branch's electrically-controlled valve and branch pipe electrically-controlled valve are connect with the controller, further include data storage, the data storage
Device is stored with given threshold corresponding with gas flow in each extraction branched pipe and extraction branch pipe and gas pressure；Each pumping
It adopts and is additionally provided with branch flow sensor and branch's gas pressure sensor on branched pipe, be additionally provided with branch on each extraction branch pipe
Flow sensor tube and branch pipe gas pressure sensor, the extraction branch pipe are N number of, wherein N >=2, extraction branched pipe are M,
M >=2 are taken out when the gas density that the branch pipe gas indicator on i-th of extraction branch pipe detects is less than the gas in extraction branch pipe
When adopting pressure and the corresponding given threshold of flow, and the gas that the branched pipe gas indicator on M extraction branched pipe detects
When concentration is respectively less than gas drainage pressure in extraction branched pipe and flow corresponding given threshold, on i-th of extraction branch pipe
Branch pipe electrically-controlled valve just closed by the controller, detected when the branch pipe gas indicator on i-th of extraction branch pipe
Branch pipe electrically-controlled valve when gas density is greater than the extraction branch pipe corresponding setting gas density threshold value, on i-th of extraction branch pipe
It is opened by the controller, wherein 1≤i≤N；When the branched pipe gas indicator on k-th of extraction branched pipe detects
Gas density when being less than gas drainage pressure and the corresponding given threshold of flow in extraction branched pipe, k-th of extraction point
Branched pipe electrically-controlled valve on branch pipe is closed by the controller, the branched pipe gas indicator on k-th of extraction branch pipe
Point when gas density detected corresponds to setting gas density threshold value greater than the extraction branch pipe, on k-th of extraction branched pipe
Branch pipe electrically-controlled valve is opened by the controller, wherein 1≤k≤N；It further include warning circuit and display circuit, when the branch
When the open/close states of pipe electrically-controlled valve or branched pipe electrically-controlled valve change, the warning circuit issues alarm, and display electricity
The corresponding display area in road will appear flashing display certain time；
The front tube of the branched pipe gas indicator or branch pipe gas indicator road is provided with equalizing valve door,
In, the equalizing valve door includes valve body, bellmouth, outer ventilation net, interior ventilation net and mid-level net, in the valve body
Mandrel line is provided with bellmouth, and the small tapered end of the bellmouth is examined close to the branched pipe gas indicator or the branch pipe gas
Device setting is surveyed, is disposed with outer ventilation net, mid-level net and interior ventilation net in the bellmouth from large awl end to small tapered end, and outer
The mesh for ventilating online is staggered with the mesh on the mid-level net, and the mesh on the mid-level net and the interior ventilation are online
Mesh be staggered.
2. a kind of coal mine gas drainage control system according to claim 1, it is characterised in that: the outer ventilation is online
The diameter of mesh is less than the mesh diameter size on the mid-level net, and the mesh diameter size on the mid-level net is less than institute
State the diameter of the online mesh of interior ventilation.
3. a kind of coal mine gas drainage control system according to claim 1, it is characterised in that: further include wireless receiving and dispatching
Device, the wireless transceiver are connect with controller, realize the long-range monitoring and control with gas drainage by the wireless transceiver
System.
4. using a kind of described in any item extraction controlling parties of coal mine gas drainage control system progress extraction of claim 1-3
Method, it is characterised in that: itself the following steps are included:
(1) when extraction is initial, all branch pipe electrically-controlled valves and branched pipe electrically-controlled valve are in open state, the gas drainage pump
It is worked with maximum power, and passes through setting auxiliary gas extraction pump to increase gas drainage rate and extracting result；
(2) it is less than when controller receives the gas density that the branched pipe gas indicator on k-th of extraction branched pipe detects
Branched pipe when the corresponding given threshold of gas drainage pressure and flow in extraction branched pipe, on k-th of extraction branched pipe
Electrically-controlled valve is closed by the controller；When the gas density that the branch pipe gas indicator on i-th of extraction branch pipe detects
When less than gas drainage pressure and the corresponding given threshold of flow in extraction branch pipe, and the branched pipe on M extraction branched pipe
The gas density that gas indicator detects is respectively less than gas drainage pressure and the corresponding setting threshold of flow in extraction branched pipe
When value, the branch pipe electrically-controlled valve on i-th of extraction branch pipe is just closed by the controller；Otherwise, extraction branched pipe or pumping
The electric control valve adopted on branch pipe is constantly in open state；
(3) if the open/close states of i-th of branch pipe electrically-controlled valve or k-th of branched pipe electrically-controlled valve change, warning circuit meeting
Corresponding alarm is issued, display circuit will do it corresponding flashing display；
(4) number that controller is opened according to branched pipe electrically-controlled valve and branch pipe electrically-controlled valve carries out the power of gas drainage pump real
When control.
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| CN201610160362.6A CN105822338B (en) | 2016-03-18 | 2016-03-18 | A kind of coal mine gas drainage control system and control method |
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| CN201610160362.6A CN105822338B (en) | 2016-03-18 | 2016-03-18 | A kind of coal mine gas drainage control system and control method |
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| CN105822338B true CN105822338B (en) | 2019-01-29 |
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| CN106057061B (en) * | 2016-08-17 | 2018-07-17 | 西安科技大学 | Coal mine gas extraction drill hole Gas leak position testing laboratory's simulation system and method |
| CN107956467A (en) * | 2017-11-20 | 2018-04-24 | 中国矿业大学(北京) | A kind of high seam pre-draining borehole parameter optimization and the method for extracting result assessment |
| 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 |
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| CN110685732B (en) * | 2019-09-29 | 2021-06-15 | 华北科技学院 | Coal seam drilling gas extraction method based on extraction pipeline valve control |
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| CN110850054A (en) * | 2019-12-04 | 2020-02-28 | 河南工程学院 | Coal and gas outburst simulation 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 |
| CN113234503B (en) * | 2021-06-03 | 2022-02-25 | 中国地质大学（北京） | Low-coal-rank coal bed gas high-efficiency mining dust treatment device |
| CN113605866B (en) * | 2021-08-25 | 2024-04-02 | 上海大屯能源股份有限公司孔庄煤矿 | Dynamic regulation and control system and method for mine gas extraction |
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