CN103698490A - Borehole gas drainage radius testing device - Google Patents
Borehole gas drainage radius testing device Download PDFInfo
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- CN103698490A CN103698490A CN201310733036.6A CN201310733036A CN103698490A CN 103698490 A CN103698490 A CN 103698490A CN 201310733036 A CN201310733036 A CN 201310733036A CN 103698490 A CN103698490 A CN 103698490A
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- gas
- vacuum pump
- valve
- pressure
- maintaining valve
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Abstract
The invention relates to an integrated device capable of quickly determining borehole gas drainage radius. In an explosion-proof metal casing, a high pressure gas storage cylinder is connected with a pressure reducing valve, a pressure gauge, a pressure maintaining valve, a flow maintaining valve, an air resistor, a digital flow meter and a relief port to form a release system for the device; a connector is connected with a vacuum pump and the relief port to form a compressed air system, and the vacuum pump provides compressed air force to press SF6 tracer gas into a release borehole; the connector is connected with the vacuum pump, the pressure maintaining valve, the flow maintaining valve, an SF6 gas sensor, a filtering light path, a signal amplifier, an A/D converter, an MCU (microprogrammed control unit) and an LED display to form a sample detecting system, the vacuum pump is started, and corresponding mixed gas in a detecting hole is extracted and sent to the SF6 gas sensor, so as to analyze theSF6 content in the mixed gas.
Description
Technical field
The present invention is that tracer gas SF is put, gathers and analyzed to a kind of collected explanations
6thereby the integrated apparatus of determining hole pumping and mining gas radius, is mainly used in the test job of hole pumping and mining gas radius in high gas and coal and gas outburst mine.
Background technology
Tracer gas SF is used in colliery at present
6in the engineering practice of testing bore holes mash gas extraction radius, there is no collected explanations and put, gather and detect the integrated device of analysis, utilized tracer gas SF in the past
6testing bore holes mash gas extraction radius is the separate processes of link such as release, collection and analyzing and testing, be that releasing means is by manually all parts being carried into underground trials scene, parts are easily lost, and working environment at coal mines complicated difficult connects the leakproofness of rear releasing means to ensure each parts; Sampling is manually to utilize pump, syringe needle etc. to gather gas sample, and sampling efficiency is low, easily gas leakage, and gas sample bag detects by being manually carried into ground experiment chamber, expends the plenty of time and easily causes gas sample to leak; In minute gassing sample, manual operation task is heavy, is prone to misoperation, causes experiment to detect unsuccessfully.
Summary of the invention
In order to overcome down-hole tracer gas, discharge, gather and the operation such as analysis in operating instrument scattered and be inconvenient to carry, leakproofness and accuracy are subject to Minepit environment impact, manual operation is complicated, output gas flow of gas is unstable, sampler bag is the deficiency such as gas leakage easily.The invention provides a kind of air release, gather and analyze tracer gas SF
6thereby determine hole pumping and mining gas radius integrated apparatus, this device is not only easy to carry, simple to operate, and has ensured the levels of precision of experimentation.
The technical solution adopted for the present invention to solve the technical problems is: in square explosion-proof metal shell, high-pressure gas cylinder and reduction valve, tensimeter, pressure maintaining valve 1, flow stabilizing valve 1, vapour lock, digital flowmeter and liberation port connect and compose the tracer gas delivery system of device, and high-pressure gas cylinder stores experimental gas SF
6reduction valve and tensimeter 1 are for reducing stream pressure and observation steel cylinder residual gas situation, pressure maintaining valve 1 is for stable output pressure, vapour lock coordinates regime flow with flow stabilizing valve 1, digital flow timing shows air-flow size, flow stabilizing valve and the common quantitative gas that can realize output actual needs that coordinates of digital flowmeter.Interface 1 connects and composes compressed-air system with vacuum pump, liberation port, and vacuum pump provides the power of calming the anger that tracer gas is pressed into and discharges boring inside.Interface 2 and vacuum pump, pressure maintaining valve 2, flow stabilizing valve 2, SF
6gas sensor, filtering light path, signal amplifier, A/D converter, MCU and light-emitting diode display form trace gas detection system, starting vacuum pump gathers gas sample and sends into SF6 detecting device, wherein pressure maintaining valve 2 is for steady air flow pressure, and flow stabilizing valve 2 is for regulating gas bleeding flow, SF
6gas sensor output signal, signal amplifier is used for amplifying output signal, the clutter in filtering circuit filtered signal, and A/D converter is converted to digital quantity by output signal, MCU control circuit is used for calculating current trace gas concentration, and light-emitting diode display shows gas concentration value.
Beneficial effect of the present invention is, collected explanations is put tracer gas, gathers in boring gas and minute gassing sample in one.The accuracy and the high efficiency that guarantee experiment, operating process is simple.
Accompanying drawing explanation
Fig. 1 is instrument of the present invention longitudinal profile schematic diagram: 1. explosion-proof metal shell, 2. high-pressure gas cylinder, 3. reduction valve, 4. tensimeter, 5. pressure maintaining valve, 6. flow stabilizing valve, 7. vapour lock, 8. digital flowmeter, 9. gate valve, 10. liberation port, 11. gate valves, 12. vacuum pumps, 13. gate valves, 14. interfaces, 15. interfaces, 16. gate valves, 17. gate valves, 18. pressure maintaining valves, 19. flow stabilizing valves, 20.SF
6gas sensor, 21. filtering circuits, 22. signal amplifiers, 23.A/D converter, 24.MCU, 25.LED display.
Fig. 2 is SF
6gas sensor schematic diagram
Fig. 3 is the longitudinal section schematic diagram of first embodiment of device
Fig. 4 is the longitudinal section schematic diagram of second embodiment of device
Fig. 5 is the longitudinal section schematic diagram of the 3rd embodiment of device
Embodiment
In the embodiments of figure 3, open high-pressure gas cylinder (2) and gate valve (9), vapour lock (7) and digital flowmeter (8), liberation port (10) conducting successively, start digital flowmeter (8) switch, its Display panel output stream value, regulating flow-stabilizing valve (6) also shows flow value variation until be adjusted to actual needs flow value in conjunction with digital flowmeter (8), and liberation port (10) access tracer gas is discharged to boring, and device gets final product tracer gas and discharges boring output quantitative gas.
In the embodiment of Fig. 4, close high-pressure gas cylinder (2) and gate valve (9), keeping liberation port (10) and tracer gas to discharge boring is connected, interface (14) is open in the air of tunnel, closing gate valve (13) and (16), open gate valve (11) and (17), start vacuum pump (12).Device can be by the tracer gas SF previously having discharged
6be pressed into extraction borehole deep.
In the embodiment of Fig. 5, interface (15) access is detected to boring, closing gate valve (11) and (17), open gate valve (13) and (16), starts vacuum pump (12).Device can be pressed into SF by pressure maintaining valve (18) and flow stabilizing valve (19) by detecting gas
6gas sensor (20), sensor sends detection signal, detection signal is successively by filtering light path (21), signal amplifier (22), A/D converter (23), MCU(24) and convert digital signal to, be finally presented on light-emitting diode display (25).
Claims (4)
1. a definite hole pumping and mining gas radius integrated apparatus, in explosion-proof metal shell, high-pressure gas cylinder and reduction valve, tensimeter, pressure maintaining valve, flow stabilizing valve, vapour lock, digital flowmeter and liberation port form delivery system; Interface and vacuum pump, liberation port connect and compose compressed-air system, and vacuum pump provides the power of calming the anger by tracer gas SF
6be pressed into and discharge boring inside; Interface and vacuum pump, pressure maintaining valve, flow stabilizing valve, SF
6gas sensor, filtering light path, signal amplifier, A/D converter, MCU and light-emitting diode display form detection system.
2. hole pumping and mining gas radius proving installation according to claim 1, is characterized in that: tracer gas used is SF
6.
3. hole pumping and mining gas radius proving installation according to claim 1, is characterized in that: installing vacuum pump used is explosion-proof type, when its function is release, tracer gas is pressed into and discharges the boring end, gas bleeding sample during sampling.
4. hole pumping and mining gas radius proving installation according to claim 1, is characterized in that: vacuum pump function used is gas to be pressed into and to discharge the boring end, gas bleeding sample during sampling while discharging tracer gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733036.6A CN103698490A (en) | 2013-12-25 | 2013-12-25 | Borehole gas drainage radius testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733036.6A CN103698490A (en) | 2013-12-25 | 2013-12-25 | Borehole gas drainage radius testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103698490A true CN103698490A (en) | 2014-04-02 |
Family
ID=50360089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310733036.6A Pending CN103698490A (en) | 2013-12-25 | 2013-12-25 | Borehole gas drainage radius testing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103698490A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295289A (en) * | 2014-08-14 | 2015-01-21 | 神华集团有限责任公司 | Gas extraction radius determining method for strike long drilled hole |
| CN110410060A (en) * | 2019-06-19 | 2019-11-05 | 中国矿业大学 | A kind of effective radius of influence rapid assay methods of drilling |
| CN113049191A (en) * | 2021-03-08 | 2021-06-29 | 北京中才华源高新技术有限责任公司 | Mining SF6 tracer gas detection system that leaks out |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824982A (en) * | 2010-04-19 | 2010-09-08 | 中国矿业大学 | Coal bed gas drainage effective radius measuring method |
| CN202133652U (en) * | 2011-06-27 | 2012-02-01 | 常州爱特科技有限公司 | SF6 quantitative leak detector |
| CN202533237U (en) * | 2012-03-08 | 2012-11-14 | 四川省电力公司乐山电业局 | Novel SF6 gas leak detector device |
| CN103134448A (en) * | 2013-01-29 | 2013-06-05 | 河南理工大学 | Test method of drill hole gas extraction effective radius |
-
2013
- 2013-12-25 CN CN201310733036.6A patent/CN103698490A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101824982A (en) * | 2010-04-19 | 2010-09-08 | 中国矿业大学 | Coal bed gas drainage effective radius measuring method |
| CN202133652U (en) * | 2011-06-27 | 2012-02-01 | 常州爱特科技有限公司 | SF6 quantitative leak detector |
| CN202533237U (en) * | 2012-03-08 | 2012-11-14 | 四川省电力公司乐山电业局 | Novel SF6 gas leak detector device |
| CN103134448A (en) * | 2013-01-29 | 2013-06-05 | 河南理工大学 | Test method of drill hole gas extraction effective radius |
Non-Patent Citations (3)
| Title |
|---|
| 何俊忠等: "SF6示踪气体在采空区漏风量测定及注氮优化中的应用", 《煤矿安全》 * |
| 姜宝林等: "紫外线电离型SF6气体检漏仪", 《现代仪器》 * |
| 陈金玉等: "SF6气体示踪法测定钻孔瓦斯抽放有效半径", 《煤矿安全》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295289A (en) * | 2014-08-14 | 2015-01-21 | 神华集团有限责任公司 | Gas extraction radius determining method for strike long drilled hole |
| CN104295289B (en) * | 2014-08-14 | 2017-05-10 | 神华集团有限责任公司 | Gas extraction radius determining method for strike long drilled hole |
| CN110410060A (en) * | 2019-06-19 | 2019-11-05 | 中国矿业大学 | A kind of effective radius of influence rapid assay methods of drilling |
| CN110410060B (en) * | 2019-06-19 | 2020-07-31 | 中国矿业大学 | Method for rapidly measuring effective influence radius of drill hole |
| CN113049191A (en) * | 2021-03-08 | 2021-06-29 | 北京中才华源高新技术有限责任公司 | Mining SF6 tracer gas detection system that leaks out |
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Application publication date: 20140402 |