CN201251527Y - Beam tube type automatic control air extraction sampling and flushing device - Google Patents
Beam tube type automatic control air extraction sampling and flushing device Download PDFInfo
- Publication number
- CN201251527Y CN201251527Y CNU2008200237290U CN200820023729U CN201251527Y CN 201251527 Y CN201251527 Y CN 201251527Y CN U2008200237290 U CNU2008200237290 U CN U2008200237290U CN 200820023729 U CN200820023729 U CN 200820023729U CN 201251527 Y CN201251527 Y CN 201251527Y
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- connecting pipe
- beam tube
- air extraction
- vacuum compressor
- pipe
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Abstract
The utility model relates to a beam tube type automatic control air extraction sampling and flushing device which comprises air extraction beam tubes, an air delivery pipe, a two-position three-way valve, a sampling device and a vacuum compressor, wherein, the air extraction beam tubes are connected with a one-way connecting pipe, the two-position three-way valve and a sampling device through a two-position three-way electromagnetic valve. The air extraction beam tubes respectively pass through the two-position three-way electromagnetic valve, and are connected with a connecting pipe through a main communicating pipe. An one-way valve is arranged on the connecting pipe. The device is characterized in that an air suction pipe and an air exhaust pipe are respectively connected with the vacuum compressor; the other ends of the air suction pipe and the air exhaust pipe, the connecting pipe and an air inlet and outlet pipe are respectively communicated with a multi-way reversing valve. The device can use the gas pressurizing output to directly flush pipelines, so a beam tube cleaner is saved; the installation with short distance and without pump can be realized by the isolation of the sealed noise reduction box, thereby, the investment cost is reduced; the temperature is reduced by a temperature-reduction heat exchanger, thereby the vacuum compressor can be stably operated for a long term at low noise. The device is used for the underground air extraction of beam tube chromatogram, beam tube infrared and beam tube sensor air analysis.
Description
Technical field
The utility model relates to the sampling of a kind of bundle tube automatically controlled air extraction, flusher, is used for the beam tube chromatogram, beam tube mine gas infrared, the gas analysis of beam tube sensor extracts.
Background technology
According to statistics, in the colliery of China's exploitation, exist the mine of spontaneous fire danger to account for about 70% of total numeber of mines, coal seam prone to spontaneous combustion accounts for 80% of accumulative total minable coal seam number, and the number of times that natural fire takes place accounts for more than 94% of mine fire sum.Therefore, the prevention of spontaneous fire accident must become the emphasis of mine safety research.Send the fire early prediction timely and accurately, not only can in time take fire-fighting measure, fire failure is eliminated in bud, but also can reduce the economic loss that anti-fire extinguishing causes, prevent the generation of fire failure.
Studies show that the spontaneous combustion of coal development generally will be through three periods, i.e. latent period (also claiming the preparatory stage), self-heating phase, burning phase.In latent period, coal body temperature and ambient temperature do not have anything to change substantially, but the ignition temperature of coal reduces the chemical activity enhancing.Enter the spontaneous combustion phase, the oxidation rate of coal increases, and decomposes water outlet, carbon dioxide and carbon monoxide.Oxidation generates heat and begins to make the coal body temperature to raise, and when the coal temperature surpasses the critical value (60～80 ℃) of self-heating, the coal temperature will sharply rise, and oxidation rate is accelerated, and coal carbonization occurs, generates hydrocarbon (C
mH
n), hydrogen (H
2) and carbon monoxide inflammable gass such as (CO).At this moment it also is the period of fire prevention fire extinguishing most critical.If this moment untimely some fire-fighting measures of taking, the coal temperature rises to ignition temperature with continuing and enters the burning phase.
Coal is not only emitted certain heat in the oxidation and spontaneous combustion process, but also pyrolysis discharges CO, C
2H
4And C
2H
6In hydrocarbon, and between the gas componant of decomposing and concentration and the coal temperature certain corresponding relation is arranged.Therefore, directly detect in the pyrolysis gas product of coal and the air composition and change and to judge the spontaneous combustion development degree of coal, so that carry out the early prediction of fire.
At present, coal mine safety beam tube monitoring system has begun to obtain in the colliery more and more to popularize and use.
Mine safety beam tube monitoring system is by the control of beam tube and corresponding two-position three way magnetic valve group, and down-hole air is everywhere extracted, is aggregated into the place of appointment, relends the air sample that helps chromatographic detection apparatus that tube bank is gathered and analyzes, and realizes CO, CO
2, CH
4, C
2H
4, C
2H
6, O
2, N
2On-line monitoring Deng gas content, its analysis result is when providing data with real-time monitoring report, analysis daily paper dual mode, also can deposit in the database automatically,, thereby realize early prediction the mine freely burning fire so that from now on the variation tendency of certain gas content is analyzed.
In the actual monitoring course of work,, need carry out the continuous drawing work of gas sample by various air extractors for the gas sample with the down-hole is delivered to the place of appointment.
Existing various beam tube monitoring system adopts aspiration pump or vacuum pump to finish the continuous drawing work of mine gas mostly.The subject matter that exists has two at present, and a problem is, because mine gas humidity is bigger, be easy to accumulate moisture in the gas transfer pipeline, can cause the obstruction of air delivering pipeline, for this reason, need often to utilize gases at high pressure to wash to air delivering pipeline, the beam tube cleaning machine is adopted in the flushing of the air delivering pipeline of existing various beam tube monitoring systems mostly, manually operation, with carrying out one by one of each beam tube one tunnel one tunnel, pipeline is many, and interface disconnects the connection procedure complicated operation, takes a lot of work, time-consuming, effort; Another problem is, the aspiration pump volume that adopts is big, the noise height, so must be at the distance detecting chamber larger distance construction pump house of bleeding, but construction cost that it is expensive and higher equipment price, increased user's disposable fund input and actual motion cost greatly, made its application be subjected to very big restriction.
The utility model content
The purpose of this utility model is to provide a kind of bundle tube automatically controlled air extraction sampling, flusher, can utilize gas boosting to export direct flushing line, can also guarantee to bleed unit and switch board is assembled together, and finishes closely, no pump house installs, and realizes low noise operation steady in a long-term.
Bundle tube automatically controlled air extraction sampling described in the utility model, flusher, comprise the beam tube of bleeding, gas piping, two position three-way valve, sampling apparatus and vacuum compressor, the beam tube of bleeding is communicated with the single channel connecting pipe by the two-position three way magnetic valve group, two position three-way valve and stopple coupon, the beam tube of respectively bleeding passes through the two-position three way magnetic valve group respectively, be connected to connecting pipe by gathering communicating pipe again, connecting pipe is provided with retaining valve, it is characterized in that air intake duct is connected vacuum compressor respectively with gas outlet, the other end of air intake duct and gas outlet, connecting pipe and turnover tracheae are communicated with many logical reversal valves respectively.
Wherein, the inlet end of vacuum compressor is connected with the middle air intake ducts that lead to reversal valves more, and the gas outlet of vacuum compressor is connected with the high-voltage tubes of many logical reversal valves, and connecting pipe is connected two mouths of pipe in addition that lead to reversal valves respectively with the turnover tracheae more.
The valve of many logical reversal valves for realizing that the gas flow direction turnover is switched can be the valve of an integral body, as four-way valve (four-way change-over valve), five-way valve, six-way valve etc., also can be being used in combination of a plurality of T-valve, is principle to satisfy airflow-reversing.
By adopting many logical reversal valves, can realize the pipeline gas flow is commutated, by procedure auto-control to the two-position three way magnetic valve group, the selection beam tube of bleeding, directly finish automatic flushing, owing to saved the beam tube cleaning machine, can realize detecting, the robotization of flushing of pipeline switches running pipeline, convenient, fast, save time, saving of labor, laborsaving.
Vacuum compressor is placed in the sealing noise reduction case, set up acoustical material on the sealing noise reduction chamber interior wall, realize the low noise operation of vacuum compressor, can cancel the aspiration pump room, the function of the pump house of bleeding is moved in the switch board, to bleed unit and switch board is assembled together, and finishes closely, no pump house installs the expense of reducing investment outlay greatly.
Between vacuum compressor and the sealing noise reduction case vibroshock is set, can further absorbs vacuum compressor operation noise.
In sealing noise reduction case, establish the cooling heat interchanger,, the external world is in time replaced in the heat radiation of vacuum compressor, guarantee the vacuum compression function operate as normal under closed environment, realize low noise operation steady in a long-term by heat interchange.The cooling heat interchanger can be medium heat exchange, heat pipe heat exchanging or refrigeration heat exchange etc. such as water.
The sampling of the utility model bundle tube automatically controlled air extraction, flusher, can utilize gas boosting to export direct flushing line, saved the beam tube cleaning machine, again by sealing the isolation of noise reduction case, air pump group and switch board are assembled together, finish closely, no pump house installs, reduce investment cost, also pass through the cooling of cooling heat interchanger, guarantee the low noise operation steady in a long-term of vacuum compressor, be used for the beam tube chromatogram, beam tube mine gas infrared, the gas analysis of beam tube sensor extracts.
Description of drawings
Fig. 1, the utility model one embodiment easy structure synoptic diagram.
Among the figure: 1, stopple coupon 2, two-position three way magnetic valve 3, heating radiator 4, connecting pipe 5, four-way change-over valve 6, gas outlet 7, vacuum compressor 8, sealing noise reduction case 9, cooling heat interchanger 10, turnover tracheae 11, retaining valve 12, gather communicating pipe 13, two-position three way magnetic valve group 14, the beam tube 15 of bleeding, single channel connecting pipe 16, air intake duct 17, sampling apparatus.
Embodiment
The utility model is described in further detail in conjunction with the foregoing description accompanying drawing.
As shown in the figure, described in the utility model kind of bundle tube automatically controlled air extraction sampling, flusher, comprise the beam tube 14 of bleeding, air intake duct 16, gas outlet 6, two-position three way magnetic valve 2, sampling apparatus 17 and vacuum compressor 7, vacuum compressor 7 has in parallel two, also can there be many, vacuum compressor 7 places in the sealing noise reduction case 8, set up acoustical material on sealing noise reduction case 8 inwalls, be used for absorbing sound and lowering noise, between vacuum compressor 7 and the sealing noise reduction case 8 vibroshock is set, further absorb the operation noise of vacuum compressor 7, be provided with cooling heat interchanger 9 in the sealing noise reduction case 8, the beam tube 14 of bleeding is communicated with heating radiator 3 and stopple coupon 1 by two-position three way magnetic valve group 13 gatings and by single channel connecting pipe 15 and two-position three way magnetic valve 2, the beam tube 14 of respectively bleeding passes through two-position three way magnetic valve group 13 respectively, be connected to connecting pipe 4 by gathering communicating pipe 12 again, connecting pipe 4 is provided with retaining valve 11, connecting pipe 4 connects the other end of four-way change-over valve 5 and heating radiator 3, air intake duct 16 is connected vacuum compressor 7 respectively with gas outlet 6, the other end of air intake duct 16 and gas outlet 6, connecting pipe 4 and turnover tracheae 10 are communicated with four-way change-over valve 5 respectively, the inlet end of vacuum compressor 7 is connected with the middle air intake duct of four-way change-over valve 5, the gas outlet of vacuum compressor 7 is connected with the high-voltage tube of four-way change-over valve 5, and connecting pipe 4 and turnover tracheae 10 are connected in addition two mouths of pipe of four-way change-over valve 5 respectively.
Principle of work:
When being in when bleeding the testing state, stopple coupon 1 and 15 conductings of single channel connecting pipe, single channel connecting pipe 15 ends with heating radiator 3 and connecting pipe 4.Four-way change-over valve and connecting pipe 4 and air intake duct 16 conductings, gas outlet 6 and 10 conductings of turnover tracheae, equipment enter the beam tube detected state of bleeding.Bleed in the beam tube gas successively through two-position three way magnetic valve group 13, gather communicating pipe 12, retaining valve 11, connecting pipe 4, air intake duct 16 and vacuum compressor 7, extract after gas outlet 6 and turnover tracheae 10 enter atmosphere, finish the extraction of gas.Simultaneously, stopple coupon 1 is communicated with single channel connecting pipe 15, the gas behind two-position three way magnetic valve group 13 gatings, and enter sampling apparatus 17 by single channel connecting pipe 15, two-position three way magnetic valve 2, stopple coupon 1 this moment, realizes the detection of sample gas.
When needs carried out the beam tube flushing, two-position three way magnetic valve 2 moved simultaneously with four-way change-over valve 5, and stopple coupon 1 ends with single channel connecting pipe 15, single channel connecting pipe 15 and heating radiator 3 and connecting pipe 4 conductings.Four-way change-over valve and connecting pipe 4 and gas outlet 6 conductings, air intake duct 16 enters beam tube flushing state with turnover tracheae 10 conductings, equipment.Atmosphere through after turnover tracheae 10, air intake duct 16 and vacuum compressor 7 compressions, enters the beam tube 14 of bleeding and finishes the beam tube flushing successively after gas outlet 6, connecting pipe 4, heating radiator 3, two-position three way magnetic valve 2, single channel connecting pipe 15 and the control of two-position three way magnetic valve group 13 gatings.
Claims (5)
1, a kind of bundle tube automatically controlled air extraction sampling, flusher, comprise the beam tube of bleeding, gas piping, two position three-way valve, sampling apparatus and vacuum compressor, the beam tube of bleeding is communicated with single channel connecting pipe, two position three-way valve and stopple coupon by the two-position three way magnetic valve group, the beam tube of respectively bleeding passes through the two-position three way magnetic valve group respectively, be connected to connecting pipe by gathering communicating pipe again, connecting pipe is provided with retaining valve, it is characterized in that air intake duct is connected vacuum compressor respectively with gas outlet, the other end of air intake duct and gas outlet, connecting pipe and turnover tracheae are communicated with many logical reversal valves respectively.
2, bundle tube automatically controlled air extraction sampling according to claim 1, flusher, the inlet end that it is characterized in that vacuum compressor is connected with the middle air intake duct of many logical reversal valves, the gas outlet of vacuum compressor is connected with the high-voltage tube of many logical reversal valves, and connecting pipe is connected two mouths of pipe in addition that lead to reversal valves respectively with the turnover tracheae more.
3, bundle tube automatically controlled air extraction sampling according to claim 1 and 2, flusher is characterized in that vacuum compressor places in the sealing noise reduction case, has set up acoustical material on the sealing noise reduction chamber interior wall.
4, bundle tube automatically controlled air extraction sampling according to claim 3, flusher is characterized in that between vacuum compressor and the sealing noise reduction case vibroshock being set.
5, bundle tube automatically controlled air extraction according to claim 4 sampling, flusher is characterized in that sealing and are provided with the cooling heat interchanger in the noise reduction case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200237290U CN201251527Y (en) | 2008-12-30 | 2008-12-30 | Beam tube type automatic control air extraction sampling and flushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200237290U CN201251527Y (en) | 2008-12-30 | 2008-12-30 | Beam tube type automatic control air extraction sampling and flushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251527Y true CN201251527Y (en) | 2009-06-03 |
Family
ID=40747199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200237290U Expired - Fee Related CN201251527Y (en) | 2008-12-30 | 2008-12-30 | Beam tube type automatic control air extraction sampling and flushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201251527Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157934A (en) * | 2015-09-23 | 2015-12-16 | 安徽恒源煤电股份有限公司祁东煤矿 | Bundle tube monitoring positive pressure drainage and negative pressure leak detection system |
-
2008
- 2008-12-30 CN CNU2008200237290U patent/CN201251527Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157934A (en) * | 2015-09-23 | 2015-12-16 | 安徽恒源煤电股份有限公司祁东煤矿 | Bundle tube monitoring positive pressure drainage and negative pressure leak detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20111230 |