CN207229094U - Aqueous determination of coal seam gas pressure device - Google Patents
Aqueous determination of coal seam gas pressure device Download PDFInfo
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- CN207229094U CN207229094U CN201721287604.4U CN201721287604U CN207229094U CN 207229094 U CN207229094 U CN 207229094U CN 201721287604 U CN201721287604 U CN 201721287604U CN 207229094 U CN207229094 U CN 207229094U
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Abstract
It the utility model is related to a kind of aqueous determination of coal seam gas pressure device for being suitable for tilting upward drilling.Including pressure-measuring pipe, Grouting Pipe, grouting pump, draining discharge pipe, sensor-based system, water level and drainpipe are further included；Pressure-measuring pipe, water level and the drainpipe, draining discharge pipe, Grouting Pipe are successively vertically from top to bottom by fixing bracket stationary arrangement in drilling, and length shortens successively；The outer end of pressure-measuring pipe and water level and drainpipe is respectively provided with water induction device, solenoid valve, and draining discharge pipe outer end is equipped with drain valve, and water induction device, solenoid valve and sensor-based system connect.The present apparatus opens the new method of aqueous coal bed drilling firedamp testing, can directly measure aqueous gas flowing in coal layer and aqueous coal bed drilling gas pressure, and effectively reduce the influence that water tests gas pressure in coal seam.Its is simple in structure, install convenient, easy to operate, its measurement result is accurate, reusable.
Description
Technical field
Determination of coal seam gas pressure device is the utility model is related to, it is especially a kind of to be suitable for tilting upward the aqueous of drilling
Determination of coal seam gas pressure device.
Background technology
Coal-bed gas pressure is how much to determine coal seam gas-bearing capacity, Gas Flow power height and mash gas dynamic phenomenon
The basic parameter of potential size.In research and evaluation gas reserves, Gas, Gas Flow, gas drainage under suction and Gas Outburst
In, grasp accurately and reliably gas pressure parameter it is particularly important that.Most mine coal measure stratas have water-bearing layer, when coal bed drilling is by water
Influence, the accuracy of gas pressure measurement parameter will be severely impacted.Water is mainly derived from coal seam and country rock, especially coal
Sandstone Water in layer country rock, when water enters determination of coal seam gas pressure device, it not is original watt of coal seam to determine the pressure come
This pressure.
For current aqueous determination of coal seam gas pressure mainly using water external turbulence measuring method is excluded, it has mainly used device in Gas
Body realizes gas-water separation middle solubility is low the characteristics of, by pressure-measuring pipe importing upper gas, carries out pressure measurement.The method is mainly applicable in
In the situation that coal seam water yield is few, gas pressure is more than coal seam hydraulic pressure.If when coal seam water yield is big, nourishment source is sufficient, coal seam
When hydraulic pressure is much larger than gas pressure, measures gas pressure and necessarily disturbed and do not applied to.
Existing pressure measuring unit is although with gas and water piece-rate system, automatic drain system, but these devices can be realized and contained
The separation of air water in water coal seam, water are automatically drained out, but whether by coal seam influence of hydraulic pressure, measure knot when can not determine measure pressure
Fruit has a hysteresis quality, and secondary hole sealing or the time to sealing of hole can have the problem of judging basis.
CN202057373U discloses one kind and is rich in water testing device for gas flow from boreholes, in the case of following three kinds
It can measure wrong：
1. if institute's drilling is inclined upwardly, coal seam pours in water meeting a part of gas of fluid-tight of drilling, gas is not led to
Water seperation film is crossed, causes surveyed gas pressure inaccurate；
2. gushing out mostly black water rich in water coal seam, water seperation film can be blocked, influences gas by causing surveyed gas pressure
Power is inaccurate；
3. the water and discharge water balance for pouring in drilling are unable to control, when pouring in drilling water more than discharge water,
Since water volume increase causes the interior pressure increase that drills, so that being not easy to be discharged into drilling rich in the gas in coal seam, lead
Gas pressure inaccuracy is surveyed in cause；
205370556 U of CN work as pressure measuring unit Auto-drainage although with automatic drain system, pressure balancing system
During and after, pressure measurement knot can not be determined whether by influence of hydraulic pressure.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of aqueous determination of coal seam gas pressure device, it is suitable for
To the measure of aqueous coal bed drilling gas pressure, the Gas explosion burns in the aqueous coal seam of measure that can be effective, safe and accurate.
The utility model solves the technical solution that its technical problem uses：
A kind of aqueous determination of coal seam gas pressure device, including pressure-measuring pipe, Grouting Pipe, grouting pump, draining discharge pipe, sensing
System, further includes water level and drainpipe；Pressure-measuring pipe, water level and the drainpipe, draining discharge pipe, Grouting Pipe are successively along vertical
Direction is from top to bottom by fixing bracket stationary arrangement in drilling, and length shortens successively；Pressure-measuring pipe and water level and drainpipe
Outer end be respectively provided with water induction device, solenoid valve, draining discharge pipe outer end is equipped with drain valve, water induction device, solenoid valve and sensing
System connects.
Using the utility model of above-mentioned technical proposal, compared with prior art, its advantage is：
In the case of can determine that pressure measurement water inlet tube, can practical test coal-bed gas pressure, test technology is simple, survey
Of low cost, good airproof performance is tried, it is reusable；The utility model provides a kind of more perfect dress for gas pressure measurement
Put.
Brief description of the drawings
Fig. 1 is the gas pressure measurement apparatus structure schematic diagram of the utility model embodiment；
Fig. 2 is gas pressure measurement device installation site profile in coal bed drilling；
In figure, 1-rock stratum or coal seam；2-floral tube；3-pressure-measuring pipe；4-water level and drainpipe；5-draining discharge pipe；
6-Grouting Pipe；7-coal seam water；8-mortar；9-polyurethane；10-pressure gauge；11-fixing bracket；12-sensor-based system；
13-valve；14-grouting pump；15-water induction device；16-solenoid valve；17-drain valve；18-drilling.
Embodiment
Referring to the drawings and the utility model is described in detail in embodiment：
Referring to Fig. 1, Fig. 2, a kind of aqueous determination of coal seam gas pressure device, by floral tube 2, pressure-measuring pipe 3, water level and drainpipe
4th, draining discharge pipe 5, Grouting Pipe 6, pressure gauge 10, fixing bracket 11, sensor-based system 12, valve 13, grouting pump 14, water induction device
15th, solenoid valve 16, drain valve 17 form；Pressure-measuring pipe 3, water level and drainpipe 4, draining discharge pipe 5, Grouting Pipe 6 are successively along vertical
Direction is from top to bottom by 11 stationary arrangement of fixing bracket in drilling 18, and length shortens successively；3 inner end of pressure-measuring pipe is equipped with flower
Pipe 2,3 outer end of pressure-measuring pipe are respectively provided with pressure gauge 10, water induction device 15, solenoid valve 16；The outer end of water level and drainpipe 4 fills respectively
There are water induction device 15, solenoid valve 16；Water induction device 15, solenoid valve 16 are connected with sensor-based system 12；5 outer end of draining discharge pipe is equipped with
Drain valve 17；Grouting Pipe 6 connects grouting pump 14, and valve 13 is installed in Grouting Pipe 6.
Gas pressure measurement device described in the present embodiment, can be adapted for the gas pressure measurement of multi-angle uphole,
And carry out as follows：
Step 1：Drilling 18 is carried out to coal seam or rock stratum 1 using drilling machine；
Step 2：By the pressure-measuring pipe 3 fixed by fixing bracket 11, water level and drainpipe 4, draining discharge pipe 5, Grouting Pipe 6
Fill in drilling 18, and sealing of hole is carried out using polyurethane 9；
Step 3：Start sensor-based system 12 and open drain valve 17, when water induction device 15 contacts water, solenoid valve 16 is opened
Open, pressure-measuring pipe 3, water level and drainpipe 4, draining discharge pipe 5 discharge water；
Step 4：When water induction device 15 does not contact water, solenoid valve 16 is closed, and starts injection hole sealing using grouting pump 14,
When there is mortar 8 to be flowed out from draining discharge pipe 5, drain valve 17 is closed, sealing of hole finishes at this time；
Step 5：When that will not restart after solenoid valve 16 closes a period of time, read 10 data of pressure gauge and record, this
When data can calculate accurate coal-bed gas pressure；
Step 6：Measure finishes, and arranges retracting device, is used easy to next time.
The above, is only the preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art is in the technical scope of the utility model, the change that can readily occur in
Change or replace, should be covered within the scope of the utility model.
Claims (1)
1. a kind of aqueous determination of coal seam gas pressure device, including pressure-measuring pipe（3）, Grouting Pipe（6）, grouting pump（14）, drainage
Slurry pipe（5）, sensor-based system（12）, it is characterised in that：Further include water level and drainpipe（4）, the pressure-measuring pipe（3）, water level and
Drainpipe（4）, draining discharge pipe（5）, Grouting Pipe（6）Vertically pass through fixing bracket from top to bottom successively（11）Fixed row
It is listed in drilling（18）In, and length shortens successively；Pressure-measuring pipe（3）With water level and drainpipe（4）Outer end be respectively provided with water induction
Device（15）, solenoid valve（16）, draining discharge pipe（5）Outer end is equipped with drain valve（17）, water induction device（15）, solenoid valve（16）With biography
Sensing system（12）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721287604.4U CN207229094U (en) | 2017-10-09 | 2017-10-09 | Aqueous determination of coal seam gas pressure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721287604.4U CN207229094U (en) | 2017-10-09 | 2017-10-09 | Aqueous determination of coal seam gas pressure device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207229094U true CN207229094U (en) | 2018-04-13 |
Family
ID=61850037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721287604.4U Active CN207229094U (en) | 2017-10-09 | 2017-10-09 | Aqueous determination of coal seam gas pressure device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207229094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025890A (en) * | 2018-05-15 | 2018-12-18 | 菏泽学院 | A kind of coal mine gas measures water outlet detection and the sealing of hole drainage arrangement of drilling |
-
2017
- 2017-10-09 CN CN201721287604.4U patent/CN207229094U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025890A (en) * | 2018-05-15 | 2018-12-18 | 菏泽学院 | A kind of coal mine gas measures water outlet detection and the sealing of hole drainage arrangement of drilling |
| CN109025890B (en) * | 2018-05-15 | 2020-11-24 | 菏泽学院 | Water outlet detection and hole sealing drainage device for coal mine gas measurement drilling |
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