CN206522123U - Coal bed gas well pressure control system - Google Patents
Coal bed gas well pressure control system Download PDFInfo
- Publication number
- CN206522123U CN206522123U CN201720190823.4U CN201720190823U CN206522123U CN 206522123 U CN206522123 U CN 206522123U CN 201720190823 U CN201720190823 U CN 201720190823U CN 206522123 U CN206522123 U CN 206522123U
- Authority
- CN
- China
- Prior art keywords
- pit shaft
- bed gas
- control system
- draining pump
- coal bed
- 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.)
- Expired - Fee Related
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- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The utility model is related to Coal-seam Gas Recovery Technologies field, particularly a kind of coal bed gas well pressure control system, draining pump including being arranged on pit shaft upper end, the draining pump stretches into underground by returning liquid pipe, the pit shaft lower end is provided with hydraulic pressure sensor, the hydraulic pressure sensor is electrically connected with controller input, and the controller output end is electrically connected by frequency converter with draining pump.After said structure, coal bed gas well pressure control system of the present utility model controls hydraulic pressure and air pressure in pit shaft by draining pump and blower fan respectively；In addition, the speed of drawing water of draining pump is preferably controlled by controller and frequency converter, the hydraulic pressure in significantly more efficient control pit shaft.
Description
Technical field
The utility model is related to Coal-seam Gas Recovery Technologies field, particularly a kind of coal bed gas well pressure control system.
Background technology
Coal bed gas is the Unconventional gas that formula is stored up in coal seam certainly in itself, has 74 countries to contain coal bed gas money in the world
Source, China Coal Bed Methane Resource amount occupies third place in the world up to 36.8 tcms.Coalbed Methane In China mining resources amount about 10,000,000,000,000
Cubic meter.Nowadays, it has been recognized that the value of this unconventional resource of coal bed gas, therefore its exploration of coal seam and develop just progressively
Deploy in the world.
During coal-bed gas exploitation, due to containing substantial amounts of coal seam water in coal seam, coal bed gas well bottom pressure mistake is caused
Height, coal bed gas cannot flow into pit shaft.Therefore, it is necessary to coal seam water be excluded, to reduce the bottom pressure of coal bed gas well so that coal seam
Gas continuously flows into pit shaft under certain producing pressure differential effect.
The content of the invention
The utility model technical issues that need to address are to provide a kind of control system for controlling coal bed gas well pressure stable.
To solve above-mentioned technical problem, coal bed gas well pressure control system of the present utility model, including it is arranged on pit shaft
The draining pump of upper end, the draining pump stretches into underground by returning liquid pipe, and the pit shaft lower end is provided with hydraulic pressure sensor, the water
Pressure sensor is electrically connected with controller input, and the controller output end is electrically connected by frequency converter with draining pump.
Further, the pit shaft side wall is provided with baroceptor, the baroceptor and controller input electricity
Connection；Also include being provided with blower fan in the blast pipe communicated with pit shaft, the blast pipe, the controller output end passes through first
Relay is electrically connected with blower fan.
Further, the junction of the blast pipe and pit shaft is provided with plug, and the plug is connected with cylinder top
Connect, the cylinder is electrically connected by the second relay with controller output end.
Further, it is provided with coal fine filter in the blast pipe between the plug and blower fan.
After said structure, coal bed gas well pressure control system of the present utility model respectively by draining pump and blower fan come
Control the hydraulic pressure and air pressure in pit shaft；In addition, preferably controlling the speed of drawing water of draining pump by controller and frequency converter, more
Hydraulic pressure in effective control pit shaft.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of the utility model coal bed gas well pressure control system.
In figure：1 is pit shaft, and 2 is return liquid pipe, and 3 be draining pump, and 4 be hydraulic pressure sensor, and 5 be baroceptor, and 6 be frequency conversion
Device, 7 be controller, and 8 be the first relay, and 9 be blower fan, and 10 be blast pipe, and 11 be coal fine filter, and 12 be plug, and 13 be gas
Cylinder, 14 be the second magnetic valve
Embodiment
As shown in figure 1, coal bed gas well pressure control system of the present utility model, including it is arranged on the draining of the upper end of pit shaft 1
Pump 3, the draining pump 3 stretches into underground by returning liquid pipe 2.The lower end of pit shaft 1 is provided with hydraulic pressure sensor 4, and the hydraulic pressure is passed
Sensor 4 is electrically connected with the input of controller 7, and the output end of controller 7 is electrically connected by frequency converter 6 with draining pump 3.Pass through water
Hydraulic pressure in the detection pit shaft of pressure sensor 4, is then transferred to controller 7, and controller 7 controls taking out for draining pump 3 by frequency converter 6
Water speed, so as to more be accurately controlled the hydraulic pressure in pit shaft 1.
Further, in order to efficiently control the air pressure in pit shaft 1, the side wall of pit shaft 1 is provided with air pressure sensing
Device 5, the baroceptor 5 is electrically connected with the input of controller 7；Also include the blast pipe 10 communicated with pit shaft 1, the exhaust
Blower fan 9 is provided with pipe 10, the output end of controller 7 is electrically connected by the first relay 8 with blower fan 9.Pass through air pressure sensing
Air pressure in the detection pit shaft 1 of device 5, is then transferred to controller 7, and controller 7 controls blower fan 9 to work by the first relay 8, from
And reach the purpose of air pressure in adjustment pit shaft 1.
Further, in order to keep the stability of air pressure in pit shaft 1, the junction of the blast pipe 10 and pit shaft 1 is set
Plug 12 is equipped with, the plug 12 is connected with the top of cylinder 13, and the cylinder 13 is defeated by the second relay 14 and controller 7
Go out end electrical connection.So when baroceptor 5 detects the stable gas pressure in pit shaft 1, controller 7 passes through the second relay 14
Control plug 12 closes exhaust duct 10；When the air pressure that baroceptor 5 is detected in pit shaft 1 is higher, controller 7 passes through
Two relays 14 control plug opens exhaust duct 10, then controls the work of blower fan 9 to carry out air draft by the first relay 8, from
And adjust the air pressure in pit shaft 1.
Further, it is provided with to preferably filter in coal dust, the blast pipe 10 between the plug 12 and blower fan 9
Coal fine filter 11.
Although the foregoing describing embodiment of the present utility model, those skilled in the art should manage
Solution, these are merely illustrative of, and can make various changes or modifications to present embodiment, without departing from original of the present utility model
Reason and essence, protection domain of the present utility model are only limited by the claims that follow.
Claims (4)
1. a kind of coal bed gas well pressure control system, including the draining pump of pit shaft upper end is arranged on, the draining pump is by returning liquid
Pipe stretches into underground, it is characterised in that：The pit shaft lower end is provided with hydraulic pressure sensor, and the hydraulic pressure sensor is inputted with controller
End electrical connection, the controller output end is electrically connected by frequency converter with draining pump.
2. according to a kind of coal bed gas well pressure control system described in claim 1, it is characterised in that：The pit shaft side wall is set
There is baroceptor, the baroceptor is electrically connected with controller input；Also include the blast pipe communicated with pit shaft, it is described
Blower fan is provided with blast pipe, the controller output end is electrically connected by the first relay with blower fan.
3. according to a kind of coal bed gas well pressure control system described in claim 2, it is characterised in that：The blast pipe and pit shaft
Junction be provided with plug, the plug is connected with cylinder top, and the cylinder is defeated by the second relay and controller
Go out end electrical connection.
4. according to a kind of coal bed gas well pressure control system described in claim 3, it is characterised in that：The plug and blower fan it
Between blast pipe in be provided with coal fine filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720190823.4U CN206522123U (en) | 2017-03-01 | 2017-03-01 | Coal bed gas well pressure control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720190823.4U CN206522123U (en) | 2017-03-01 | 2017-03-01 | Coal bed gas well pressure control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206522123U true CN206522123U (en) | 2017-09-26 |
Family
ID=59892988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720190823.4U Expired - Fee Related CN206522123U (en) | 2017-03-01 | 2017-03-01 | Coal bed gas well pressure control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206522123U (en) |
-
2017
- 2017-03-01 CN CN201720190823.4U patent/CN206522123U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170926 Termination date: 20210301 |