CN207263461U - One kind drilling positive pressure sampling coal sample gas leakage simulator and test device - Google Patents
One kind drilling positive pressure sampling coal sample gas leakage simulator and test device Download PDFInfo
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- CN207263461U CN207263461U CN201721275080.7U CN201721275080U CN207263461U CN 207263461 U CN207263461 U CN 207263461U CN 201721275080 U CN201721275080 U CN 201721275080U CN 207263461 U CN207263461 U CN 207263461U
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Abstract
The utility model discloses one kind drilling positive pressure sampling coal sample gas leakage simulator and test device, simulator includes the coal sample unit of pipeline connection, positive pressure sampling coal sample gas leakage analogue unit, desorption instrument and the computer for being electrically connected desorption instrument；Test device including simulator further includes vacuum degassing unit and methane inflation unit；Reach adsorption equilibrium by placing coal sample in coal sample tank and being filled with by degassing and methane, constant temperature pressure-swing desorption is carried out under incubator and the effect of pressure-swing desorption device, and data are collected according to drilling positive pressure sampling coal sample gas wastage analog detection method.The utility model is capable of the simulation drilling positive pressure sampling coal sample gas leakage process of efficient and sensible, the calculating of coal sample gas wastage provides parameter during to sample, and investigate the accuracy of computational methods, reliability and stability, improve gas bearing capacity desorption determination method, easy to see clearly location of the coring procedure desorption of mash gas mechanism, reference is provided for mine gas risk prediction and gas control.
Description
Technical field
Technical field of mine safety is the utility model is related to, more particularly to one kind drilling positive pressure sampling coal sample gas leakage
Simulator and test device.
Background technology
Coal is the important energy source in China, and coal-bed gas is a kind of unconventional property natural gas resource, while is also colliery life
A kind of disaster gas during production；It will be apparent that coal seam gas-bearing capacity measure work is the basis of all Firedamp precaution measures, tool
There is irreplaceable important function；Therefore, in order to improve location of the coring procedure coal core gas wastage reckoning reliability, it is necessary to it is right
Drilling positive pressure sampling coal sample gas leakage is studied；Further see clearly the Desorption Mechanism under the different condition of coal seam, be colliery
Safety in production provides safeguard；Wherein, the background technology bag of the positive pressure that drills sampling coal sample gas leakage analog detection method and device
Include：
1st, positive pressure sampling distance；
2nd, sample time is short, can reduce sampling wastage；
3rd, sampling process is positive pressure, and it is atmospheric pressure to take out coal sample site desorption；
4th, how to calculate that positive pressure samples according to normal pressure desorption quantity and miss gas amount.
This problem is badly in need of solving.
Utility model content
Part in view of the shortcomings of the prior art, the purpose of this utility model is to provide one kind drilling positive pressure thief coal
Sample gas misses simulator and test device and method, is leaked with solving accurately calculate at present the gas of coal in location of the coring procedure
The problem of vector.
The purpose of this utility model is achieved through the following technical solutions：
One kind drilling positive pressure sampling coal sample gas leakage simulator, including the coal sample unit of pipeline connection, positive pressure sampling
Coal sample gas leakage analogue unit, desorption instrument（15）With electrical connection desorption instrument（15）Computer（14）；The coal sample unit
Including coal sample tank（6）, thermostat（7）, pressure gauge and thermometer（24）, the 5th valve（17）And heating control system（23）, institute
State coal sample tank（6）Thermostat is arranged at sealing of tank cover（7）It is interior, two interfaces, one of interface are provided with the cover
Connect pressure gauge and thermometer（24）, another interface passes through the 5th valve（17）Connect four-way pipe fitting（16）, the heating control
System processed（23）It is electrically connected thermostat（7）；The positive pressure sampling coal sample gas leakage analogue unit includes nitrogen aerating device
（22）, back pressure servo-drive system（13）, pressure gauge and thermometer（25）And seal cavity（12）；The seal cavity（12）Middle perforation
It is provided with thin-walled sebific duct（19）, it is respectively arranged with an interface on top both sides and side wall, the interface pipeline connection nitrogen on side wall
Gas aerating device（22）, the interface connection pressure gauge and thermometer of top side（25）, the interface of opposite side connected by pipeline
Back pressure servo-drive system（13）, the thin-walled sebific duct（19）Bottom passes through pipeline（18）Connect the 3rd valve（8）, top passes through pipeline
（20）It is connected to desorption instrument（15）, the 3rd valve（8）The other end and four-way pipe fitting（16）Pipeline connects.
In order to which the utility model, the nitrogen aerating device is better achieved（22）Including by the sequentially connected nitrogen of pipeline
Gasing tank（9）, surge tank（10）With the 4th valve（11）, it is provided with pressure gauge and thermometer on the surge tank, the described 4th
Valve（11）The other end is connected to seal cavity by pipeline（12）Interface on side wall.
Further, the back pressure servo-drive system（13）Including the counterbalance valve connected by four-way pipe fitting（1301）, energy storage
Device（1302）, pressure gauge（1303）With PID valves（1304）, the counterbalance valve（1301）The other end is connected to annular seal space by pipeline
Body（12）On interface.
A kind of test device for including above-mentioned drilling positive pressure sampling coal sample gas leakage simulator, further includes vacuum outgas
Unit（5）With methane inflation unit（21）；The vacuum degassing unit（5）By the vacuum pump of pipeline connection, the second valve（4）With
The vacuum meter composition being arranged on pipeline, second valve（4）The other end is connected to four-way pipe fitting by pipeline（16）One
On a interface；The methane inflation unit（21）Including by the sequentially connected high pressure methane tank of pipeline（2）, with reference to tank（1）With
One valve（3）, it is described to refer to tank（1）It is also associated with pressure gauge and thermometer, first valve（3）The other end pass through pipeline
It is connected to four-way pipe fitting（16）An interface on.
The utility model compared with the prior art, has the following advantages and beneficial effect：
The utility model is capable of the simulation drilling positive pressure sampling coal sample gas leakage of efficient and sensible, more accurate practical to establish
The coal sample gas wastage computational methods when drilling positive pressure sampling technical parameter is provided, and the newly-established drilling of experiment investigation is just
The accuracy of pressure sampling coal sample leakage gas amount computational methods, reliability and stability, improve coal seam gas-bearing capacity desorption measure
Method, to help preferably coal seam location of the coring procedure desorption of mash gas mechanism is seen clearly, is also controlled for the prediction of mine gas degree of danger and gas
Reason provides reference frame.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Embodiment
The utility model is described in further detail with reference to embodiment, but the embodiment of the utility model is not
It is limited to this.
Embodiment
A kind of as shown in Figure 1, drilling positive pressure sampling coal sample gas leakage simulator, it is characterised in that：Connect including pipeline
Coal sample unit, positive pressure sampling coal sample gas leakage analogue unit, the desorption instrument connect（15）With electrical connection desorption instrument（15）Meter
Calculation machine（14）；The coal sample unit includes coal sample tank（6）, thermostat（7）, pressure gauge and thermometer（24）, the 5th valve（17）
And heating control system（23）, the coal sample tank（6）Thermostat is arranged at sealing of tank cover（7）It is interior, it is provided with the cover
Two interfaces, one of interface connection pressure gauge and thermometer（24）, another interface passes through the 5th valve（17）Connection four
Way pipe fitting（16）, the heating control system（23）It is electrically connected thermostat（7）；The positive pressure sampling coal sample gas leakage simulation
Unit includes nitrogen aerating device（22）, back pressure servo-drive system（13）, pressure gauge and thermometer（25）And seal cavity（12）；Institute
State seal cavity（12）Middle perforation is provided with thin-walled sebific duct（19）, an interface, side are respectively arranged with top both sides and side wall
Interface pipeline connection nitrogen aerating device on wall（22）, the interface connection pressure gauge and thermometer of top side（25）, it is another
The interface of side connects back pressure servo-drive system by pipeline（13）, the thin-walled sebific duct（19）Bottom passes through pipeline（18）Connect the 3rd
Valve（8）, top passes through pipeline（20）It is connected to desorption instrument（15）, the 3rd valve（8）The other end and four-way pipe fitting（16）
Pipeline connects.
In order to which the utility model, the nitrogen aerating device is better achieved（22）Including by the sequentially connected nitrogen of pipeline
Gasing tank（9）, surge tank（10）With the 4th valve（11）, it is provided with pressure gauge and thermometer on the surge tank, the described 4th
Valve（11）The other end is connected to seal cavity by pipeline（12）Interface on side wall.
Further, the back pressure servo-drive system（13）Including the counterbalance valve connected by four-way pipe fitting（1301）, energy storage
Device（1302）, pressure gauge（1303）With PID valves（1304）, the counterbalance valve（1301）The other end is connected to annular seal space by pipeline
Body（12）On interface.
A kind of test device for including above-mentioned drilling positive pressure sampling coal sample gas leakage simulator, the test device is also
Including vacuum degassing unit（5）With methane inflation unit（21）；The vacuum degassing unit（5）By pipeline connection vacuum pump,
Second valve（4）With the vacuum meter composition being arranged on pipeline, second valve（4）The other end is connected to four-way by pipeline
Pipe fitting（16）An interface on；The methane inflation unit（21）Including by the sequentially connected high pressure methane tank of pipeline（2）, ginseng
Examine tank（1）With the first valve（3）, it is described to refer to tank（1）It is also associated with pressure gauge and thermometer, first valve（3）It is another
One end is connected to four-way pipe fitting by pipeline（16）An interface on.
The operating method tested using the utility model is as follows：
Using needing the air-tightness of detection device before the utility model device and close all valves.
In coal sample tank（6）In be put into dried coal sample, regulation thermostat（7）Temperature to 30 DEG C and keep the temperature to coal sample tank
（6）Middle constant temperature, opens vacuum pump and the second valve（4）, to coal sample tank（6）Vacuum outgas is carried out, is supervised with compound vacuum gauge
Survey coal sample tank（6）Interior vacuum, is then shut off the second valve（4）And vacuum pump, complete to coal sample tank（6）And connected pipeline is de-
Gas disposal；Open high pressure methane tank（2）Valve, pass through high pressure methane tank（2）To with reference to tank（1）In be filled with methane, close high
Press methane tank（2）Valve, and recording manometer pressure P i.e. with reference to pipe（1）Pressure, open the first valve（3）With the 5th valve
Door（17）, to coal sample tank（6）In be filled with a certain amount of methane gas, close the first valve（3）, record and refer to tank（1）Pressure gauge
Reading P, coal sample adsorption equilibrium is until pressure gauge（24）Reading records the numerical value of display, i.e. adsorption equilibrium pressure not untill change
Power is P1；
Open nitrogen gasing tank（9）Valve, pass through nitrogen gasing tank（9）To surge tank（10）It is filled with a certain amount of nitrogen
Gas, closes nitrogen gasing tank（9）Valve after open the 4th valve（11）, to airtight cavity（12）In be passed through nitrogen so that pressure
Power table（25）The pressure value P of display2With the pressure value P of adsorption equilibrium1It is identical, open the 5th valve（17）With the 3rd valve（8）；
Back pressure servo-drive system is set（13）Pressure be P0, because P0˂P1, so airtight cavity（12）In N2Can be with predetermined pressure
Power decline curve and be discharged into air；When coal sample tank（6）In pressure be more than P0When, airtight cavity（12）In thin-walled sebific duct
（19）Open, the gas desorbed can pass through thin-walled sebific duct（19）Into desorption of mash gas instrument（15）, complete the brill under pressure-lowering condition
Hole positive pressure sampling coal sample gas leakage simulation test.
In conclusion description through this embodiment, can make those skilled in the art preferably implement this programme.
Claims (4)
1. one kind drilling positive pressure sampling coal sample gas leakage simulator, it is characterised in that：Coal sample unit including pipeline connection,
Positive pressure sampling coal sample gas leakage analogue unit, desorption instrument（15）With electrical connection desorption instrument（15）Computer（14）；
The coal sample unit includes coal sample tank（6）, thermostat（7）, pressure gauge and thermometer（24）, the 5th valve（17）And heating
Control system（23）, the coal sample tank（6）Thermostat is arranged at sealing of tank cover（7）It is interior, two are provided with the cover and is connect
Mouthful, one of interface connection pressure gauge and thermometer（24）, another interface passes through the 5th valve（17）Connect four-way pipe fitting
（16）, the heating control system（23）It is electrically connected thermostat（7）；
The positive pressure sampling coal sample gas leakage analogue unit includes nitrogen aerating device（22）, back pressure servo-drive system（13）, pressure
Power table and thermometer（25）And seal cavity（12）；
The seal cavity（12）Middle perforation is provided with thin-walled sebific duct（19）, one, which is respectively arranged with, on top both sides and side wall connects
Mouthful, the interface pipeline connection nitrogen aerating device on side wall（22）, the interface connection pressure gauge and thermometer of top side（25）,
The interface of opposite side connects back pressure servo-drive system by pipeline（13）, the thin-walled sebific duct（19）Bottom passes through pipeline（18）Connection
3rd valve（8）, top passes through pipeline（20）It is connected to desorption instrument（15）, the 3rd valve（8）The other end and four-way pipe fitting
（16）Pipeline connects.
A kind of 2. drilling positive pressure sampling coal sample gas leakage simulator according to claim 1, it is characterised in that：It is described
Nitrogen aerating device（22）Including by the sequentially connected nitrogen gasing tank of pipeline（9）, surge tank（10）With the 4th valve（11）, institute
State and pressure gauge and thermometer are provided with surge tank, the 4th valve（11）The other end is connected to seal cavity by pipeline
（12）Interface on side wall.
A kind of 3. drilling positive pressure sampling coal sample gas leakage simulator according to claim 1, it is characterised in that：It is described
Back pressure servo-drive system（13）Including the counterbalance valve connected by four-way pipe fitting（1301）, accumulator（1302）, pressure gauge（1303）
With PID valves（1304）, the counterbalance valve（1301）The other end is connected to seal cavity by pipeline（12）On interface.
4. a kind of test device of any drilling positive pressure sampling coal sample gas leakage simulator containing claims 1 to 33, its
It is characterized in that：The test device further includes vacuum degassing unit（5）With methane inflation unit（21）；
The vacuum degassing unit（5）By the vacuum pump of pipeline connection, the second valve（4）With the vacuum meter group being arranged on pipeline
Into second valve（4）The other end is connected to four-way pipe fitting by pipeline（16）An interface on；
The methane inflation unit（21）Including by the sequentially connected high pressure methane tank of pipeline（2）, with reference to tank（1）With the first valve
（3）, it is described to refer to tank（1）It is also associated with pressure gauge and thermometer, first valve（3）The other end be connected to by pipeline
Four-way pipe fitting（16）An interface on.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721275080.7U CN207263461U (en) | 2017-09-30 | 2017-09-30 | One kind drilling positive pressure sampling coal sample gas leakage simulator and test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721275080.7U CN207263461U (en) | 2017-09-30 | 2017-09-30 | One kind drilling positive pressure sampling coal sample gas leakage simulator and test device |
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| CN207263461U true CN207263461U (en) | 2018-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748082A (en) * | 2017-09-30 | 2018-03-02 | 河南理工大学 | The malleation that drills sampling coal sample gas leakage analogue means and test device and method |
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2017
- 2017-09-30 CN CN201721275080.7U patent/CN207263461U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748082A (en) * | 2017-09-30 | 2018-03-02 | 河南理工大学 | The malleation that drills sampling coal sample gas leakage analogue means and test device and method |
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