CN103993873A - Pressure measuring device - Google Patents
Pressure measuring device Download PDFInfo
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- CN103993873A CN103993873A CN201410236156.XA CN201410236156A CN103993873A CN 103993873 A CN103993873 A CN 103993873A CN 201410236156 A CN201410236156 A CN 201410236156A CN 103993873 A CN103993873 A CN 103993873A
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- separation chamber
- level separation
- pressure
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Abstract
The invention provides a pressure measuring device which comprises a sealing shell. A partition plate is arranged inside the sealing shell. A cavity inside the sealing shell is partitioned into a first-level separation chamber and a second-level separation chamber through the partition plate. The first-level separation chamber is arranged above the second-level separation chamber. An air inlet is formed in the side face of the first-level separation chamber. A water draining opening is formed in the bottom of the first-level separation chamber. An exhaust opening is formed in the second-level separation chamber. A pressure gauge is connected to the exhaust opening. According to the pressure measuring device, the aim of rapidly and accurately measuring the pressure of coal-seam gas is achieved.
Description
Technical field
The present invention relates to a kind of pressure test technology, particularly a kind of gas pressure measurement device.
Background technology
In colliery, coal-bed gas pressure size is an important indicator of assessment Coal Seam Outburst Hazard and coal seam gas-bearing capacity, takes corresponding outburst prevention measures and gas pumping mode according to this index.Therefore, how the gas pressure size of Measurement accuracy coal output layer reality just seems particularly important.
At present, the pressure testing method of coal-bed gas pressure is mainly in underworkings, to drill to enter coal seam, seals a rigidity piezometer tube in pressure tap, directly connects pressure meter and measure coal-bed gas pressure size on piezometer tube.
But the coal-bed gas pressure value that existing measuring method is measured is the mixed number of water and gas pressure in coal seam, is not the actual value of coal-bed gas pressure, thereby is unfavorable for assessing exactly coal seam gas-bearing capacity and then taking corresponding preventive action.
Summary of the invention
The invention provides a kind of device for pressure measurement, realized the object of measuring accurately and reliably gas pressure in coal seam.
The invention provides a kind of device for pressure measurement, comprising:
One seal casinghousing, is provided with a dividing plate in described seal casinghousing, the internal cavities of described seal casinghousing is divided into one-level separation chamber and the second-order separation chamber by described dividing plate; Described one-level separation chamber is placed on described the second-order separation chamber, and side, described one-level separation chamber arranges an air inlet port, and bottom, described one-level separation chamber arranges an outfall, and described the second-order separation arranges an exhaust opening on chamber, and described exhaust opening is connected with pressure meter.
Device for pressure measurement as above, preferably, described the second-order separation is indoor arranges a moisture separator near described exhaust ports, and described moisture separator is for the steam filtering to the indoor gas of described the second-order separation.
Device for pressure measurement as above, preferably, arranges at least one one way valve on described dividing plate, described one way valve enters described the second-order separation chamber for the gas of controlling described one-level separation chamber.
Device for pressure measurement as above, preferably, the outfall place of described one-level separation chamber arranges a discharging valve, and described discharging valve is discharged from described outfall for the water of controlling after described one-level separation chamber separates.
Device for pressure measurement as above, preferably, arranges a ball float and ball float litter in described one-level separation chamber, whether described ball float and ball float litter are used to indicate described discharging valve and discharge water.
Device for pressure measurement as above, preferably, also comprises:
Base for supporting, described base for supporting is used for supporting described one-level separation chamber.
Device for pressure measurement as above, preferably, described exhaust ports arranges a pressure meter base, and described pressure meter base is used for installing described pressure meter.
The invention provides device for pressure measurement, by the gas in coal seam is separated with the aqueous vapor of the second-order separation chamber through one-level separation chamber, make in the methane gas in coal seam contained humidity from out, gas pressure after pressure meter records separation, solved in prior art cannot Measurement accuracy coal-bed gas pressure technical problem.
Brief description of the drawings
In order to be illustrated more clearly in the present invention, inventive embodiments or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiment of the present invention, invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of device for pressure measurement embodiment mono-of the present invention;
Fig. 2 is the structural representation of device for pressure measurement embodiment bis-of the present invention;
Fig. 3 is the monitoring curve map that device for pressure measurement of the present invention is measured gas pressure.
Detailed description of the invention
In the present embodiment, device for pressure measurement can be arranged in coal mine roadway, can measure containing water under high pressure methane gas Geological Structure in Coal Mine band and roof and floor, and Fig. 1 is the structural representation of device for pressure measurement embodiment mono-of the present invention, as shown in Figure 1, device for pressure measurement comprises:
One seal casinghousing 7, in seal casinghousing 7, be provided with a dividing plate 4, wherein, on dividing plate 4, some holes or gap can be set, being convenient to gas passes, the internal cavities of seal casinghousing 7 is divided into one-level separation chamber 6 and the second-order separation chamber 3 by dividing plate 4, one-level separation chamber 6 is placed on the second-order separation chamber 3, 6 sides, one-level separation chamber arrange an air inlet port 5, 6 bottoms, one-level separation chamber arrange an outfall 8, wherein, the position that air inlet port 5 arranges in one-level separation chamber 6 is the position in one-level separation chamber 6 higher than outfall 8, outfall 8 is for discharging the water in one-level separation chamber 6 termly, in the time of needs draining, open outfall 8, water in one-level separation chamber 6 is discharged, one exhaust opening 2 is set on the second-order separation chamber 3, wherein, exhaust opening 2 can be arranged on the top of the second-order separation chamber 3, exhaust opening 2 is connected with pressure meter 1, in the present embodiment, device for pressure measurement in use, first the outfall of device for pressure measurement 8 is closed, in coal seam, make a call to a pressure tap, in pressure tap, seal a rigidity piezometer tube, between piezometer tube and air inlet port 5, be connected by the oil pipe of six points, gas (mist of gas and water) in coal seam enters one-level separation chamber 6 by air inlet port 5, liquid water in mist moves downward and falls into 6 bottoms, one-level separation chamber under Action of Gravity Field, the mist of methane gas and a small amount of water enters the second-order separation chamber 3 by the hole on dividing plate 4 or gap, the i.e. mist of methane gas and water in initial gross separation coal seam in one-level separation chamber 6, methane gas carries out secondary aqueous vapor with the mist of a small amount of water and separates in the second-order separation chamber 3, methane gas after wherein separating flows to pressure meter 1 through the exhaust opening 2 of the second-order separation chamber 3, measure the size of gas pressure by pressure meter 1, water after separation flows to the bottom of one-level separation chamber 6 by dividing plate 4, in the time that the water of the bottom of one-level separation chamber 6 reaches a certain amount of, open outfall 8, the water of 6 bottoms, one-level separation chamber is discharged, it should be noted that, when each draining, need keep the gas in seal casinghousing 7 not to be discharged from, during from a certain amount of water of the interior discharge in one-level separation chamber 6, just close outfall 8, avoid just closing when the water of 6 bottoms, one-level separation chamber is all discharged outfall 8.
This enforcement provides device for pressure measurement, by the gas in coal seam is separated with the aqueous vapor of the second-order separation chamber through one-level separation chamber, make in the methane gas in coal seam contained humidity from out, gas pressure after pressure meter records separation, solved in prior art cannot Measurement accuracy coal-bed gas pressure technical problem.
Fig. 2 is the structural representation of device for pressure measurement embodiment bis-of the present invention, on the basis of above-described embodiment, in the present embodiment, particularly, at least one one way valve 12 is set on the dividing plate 4 between one-level separation chamber 6 and the second-order separation chamber 3, in the time of test, pressure in one-level separation chamber 6 is greater than the pressure of the second-order separation chamber 3, so one way valve 12 is opened, gas after separating in one-level separation chamber 6 enters the second-order separation chamber 3 through one way valve 12, in the present embodiment, air inlet port 5 is arranged on side upwards, one-level separation chamber 6, exhaust opening 2 (referring to Fig. 1) is arranged on the top of the second-order separation chamber 4.
Further, the second-order separation chamber 3 is interior arranges a moisture separator 13 near exhaust opening 2 places, the structure of moisture separator 13 is generally a container, internal tank arranges relevant air inlet component, drop trapping member, concrete, moisture separator 13 structures can be referring to existing moisture separator, in the present embodiment, do not limited, the entrance and exit of gas is set on moisture separator 13, in the present embodiment, the entrance of moisture separator 13 communicates with the second-order separation chamber 3, the outlet of moisture separator 13 is connected with exhaust opening 2, can be to the steam filtering in the interior gas in the second-order separation chamber 3 by moisture separator 13, it should be noted that, moisture content less in mist in the second-order separation chamber 3, after mist in general moisture separator 13 separates, isolated gas flows to pressure meter 1 from the outlet of moisture separator 13 by exhaust opening 2, isolated water falls into the bottom of moisture separator 13, can flow in the second-order separation chamber 3 by the entrance of moisture separator 13, in the time reaching a certain amount of, one way valve 12 is opened, water flows into 6 bottoms, one-level separation chamber downwards, finally discharge by outfall 8.
Further, outfall 8 places that 6 bottoms, one-level separation chamber arrange arrange a discharging valve 9, described discharging valve 9 is discharged from outfall 8 for the water of controlling 6 bottoms, one-level separation chamber, in this enforcement, an interior ball float 10 and the ball float litter 11 of arranging in one-level separation chamber 6, whether ball float 10 and ball float litter 11 are used to indicate discharging valve 9 and discharge water, concrete, in the time that the water of 6 bottoms, one-level separation chamber reaches a certain amount of, ball float 10 can float along ball float litter 11 automatically, now discharging valve 9 is opened, water relies on self gravitation, discharge from outfall 8, when the water of 6 bottoms, one-level separation chamber emit a certain amount of after, ball float 10 will slide automatically, discharging valve 9 cuts out automatically, stop discharging water, ensure that one-level separation chamber 6 internal ratios weigh low weight methane gas stream and do not go out, so just ensure the tonometric accuracy of methane gas, water in one-level separation chamber 6 also can be discharged automatically simultaneously, realize automatic draining pressure measuring function.
Further, in the present embodiment, also comprise:
Base for supporting 15, base for supporting 15 is for supporting seal casinghousing 7, in this enforcement, exhaust opening 2 places arrange a pressure meter base 14, pressure meter base 14 is for setting pressure table 1, it should be noted that, pressure meter 1 is electronic pressure gage, the data upload on pressure meter can be convenient to observe at any time to ground.
Further, on the basis of above-described embodiment, in the present embodiment, the diameter of one-level separation chamber 6 is 220mm, exhaust opening 2 to one way valve 12 vertical distance be 70mm, air inlet port 5 is 355mm to the vertical distance of outfall 8.
The device for pressure measurement that the present embodiment provides does not need power supply to do power, is a kind of device for pressure measurement of mechanical automatic draining, and more than the withstand voltage degree of device for pressure measurement at least reaches 6MPa.
This enforcement provides device for pressure measurement, by the gas in coal seam is separated with the aqueous vapor of the second-order separation chamber through one-level separation chamber, make in the methane gas in coal seam contained humidity from out, gas pressure after pressure meter records separation, solved in prior art cannot Measurement accuracy coal-bed gas pressure technical problem.
Fig. 3 is the monitoring curve map that device for pressure measurement of the present invention is measured gas pressure, described device for pressure measurement is arranged on to scene, 965 meters of large lanes of track, down-hole, test with reference to the using method in above-described embodiment, test result as shown in Figure 3, in the test process of several days, a little rising of force value, there is not the phenomenon that in the process of discharging water, force value reduces and leaks gas, final pressure value stabilization is at 0.35MPa, adopt pressure testing method traditional in prior art to carry out pressure measurement to identical scene simultaneously, its pressure maximum value is 0.5MPa, this pressure is the mixing wastewater with air pressure in pressure tap, than pressure testing method of the present invention large 0.15MPa, infer that this 0.15MPa is the hydraulic pressure in methane gas in coal seam.
Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a device for pressure measurement, is characterized in that, comprising:
One seal casinghousing, is provided with a dividing plate in described seal casinghousing, the internal cavities of described seal casinghousing is divided into one-level separation chamber and the second-order separation chamber by described dividing plate; Described one-level separation chamber is placed on described the second-order separation chamber, and side, described one-level separation chamber arranges an air inlet port, and bottom, described one-level separation chamber arranges an outfall, and described the second-order separation arranges an exhaust opening on chamber, and described exhaust opening is connected with pressure meter.
2. device according to claim 1, is characterized in that, described the second-order separation is indoor arranges a moisture separator near described exhaust ports, and described moisture separator is for the steam filtering to the indoor gas of described the second-order separation.
3. device according to claim 1 and 2, is characterized in that, at least one one way valve is set on described dividing plate, and described one way valve enters described the second-order separation chamber for the gas of controlling described one-level separation chamber.
4. device according to claim 1, is characterized in that, the outfall place of described one-level separation chamber arranges a discharging valve, and described discharging valve is discharged from described outfall for the water of controlling after described one-level separation chamber separates.
5. device according to claim 4, is characterized in that, a ball float and ball float litter are set in described one-level separation chamber, and whether described ball float and ball float litter are used to indicate described discharging valve and discharge water.
6. device according to claim 1, is characterized in that, also comprises:
Base for supporting, described base for supporting is used for supporting described one-level separation chamber.
7. device according to claim 1, is characterized in that, described exhaust ports arranges a pressure meter base, and described pressure meter base is used for installing described pressure meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236156.XA CN103993873B (en) | 2014-05-29 | 2014-05-29 | Pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236156.XA CN103993873B (en) | 2014-05-29 | 2014-05-29 | Pressure measuring device |
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| CN103993873A true CN103993873A (en) | 2014-08-20 |
| CN103993873B CN103993873B (en) | 2017-02-01 |
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| CN201410236156.XA Active CN103993873B (en) | 2014-05-29 | 2014-05-29 | Pressure measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219183A (en) * | 2020-01-21 | 2020-06-02 | 中国铁建重工集团股份有限公司 | Water yield and water pressure detection device |
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| CN111219183A (en) * | 2020-01-21 | 2020-06-02 | 中国铁建重工集团股份有限公司 | Water yield and water pressure detection device |
| CN111219183B (en) * | 2020-01-21 | 2023-07-04 | 中国铁建重工集团股份有限公司 | Water volume and water pressure detection device |
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| CN103993873B (en) | 2017-02-01 |
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Effective date of registration: 20201106 Address after: 232000 Longyan Village neighborhood committee, Dongshan street, tianjia'an District, Huainan City, Anhui Province Patentee after: Xingke Measuring Technology Service Co.,Ltd. of Huainan Mining Group Address before: 232001 Anhui Province, Huainan city tianjia'an district Mountain Road No. 1 Patentee before: HUAINAN MINING INDUSTRY (Group) Co.,Ltd. |
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Effective date of registration: 20221108 Address after: No. 261, Shungeng Middle Road, Huainan, Anhui 232002 Patentee after: Huainan Mining Group Commodity Inspection Co.,Ltd. Address before: Neighborhood Committee of Longyan Village, Dongshan Street, Tianjia'an District, Huainan City, Anhui Province, 232000 Patentee before: Xingke Measuring Technology Service Co.,Ltd. of Huainan Mining Group |
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