CN101832128B - Active device and method for measuring pressure of coal-bed gas - Google Patents
Active device and method for measuring pressure of coal-bed gas Download PDFInfo
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- CN101832128B CN101832128B CN201010165584XA CN201010165584A CN101832128B CN 101832128 B CN101832128 B CN 101832128B CN 201010165584X A CN201010165584X A CN 201010165584XA CN 201010165584 A CN201010165584 A CN 201010165584A CN 101832128 B CN101832128 B CN 101832128B
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Abstract
The invention relates to an active device and a method for measuring pressure of coal-bed gas. The device comprises two solid expansion capsules arranged in a coal-bed drilling hole, and a solid-liquid mixture storage device is arranged between the two solid expansion capsules. The solid-liquid mixture storage device comprises a storage tube, and an outlet valve of sealing liquid is arranged on the wall of the storage tube; a sealing liquid transport pipeline is disposed in the storage tube, the input end of the sealing liquid transport pipeline penetrates out of the drilling hole and is connected with a liquid storage device, and the liquid storage device is connected with a pressure source device; an expansion liquid pipeline is penetrated in the solid-liquid mixture storage device, the two ends of the expansion liquid pipeline are respectively inserted in the two solid expansion capsules, an expansion liquid inlet pipeline is inserted into the solid expansion capsule located outside the drilling hole, and the inlet end of the expansion liquid inlet pipeline is connected with a hydraulic pressure source device; a gas pipeline is penetrated in the solid-liquid mixture storage device and the two solid expansion capsules, the input end of the gas pipeline is arranged in the coal-bed drilling hole, and the output end thereof extends out of the drilling hole and is connected with a pressure gauge.
Description
Technical field
The present invention relates to a kind of piezometry instrument and assay method, particularly about a kind of active coal-bed gas pressure measuring instrument and assay method.
Background technology
At present, determination of coal seam gas pressure is a basic work of control coal mine gas disaster, and its successful key is to seal pressure measurement boring reliably.Solid method for sealing such as conventional clay, cement paste, cushion rubber, capsule, owing to the shut-off capacity that lacks pressure measurement boring interior periphery microfissure, thereby the pressure measurement time is long, and the result who measures is also on the low side.Active coal-bed gas pressure measuring instrument (hereinafter to be referred as measuring cell) adopts the mode sealing of hole of " solid sealing liquid body, liquid envelope gas ", that is: in pressure measurement boring, seal middle one section liquid with two sections expansion of solids capsules, methane gas with this section liquid shutoff boring interior periphery microfissure, and guaranteeing the pressure of expansion of solids capsule in the pressure measurement process greater than the pressure of the seal fluid that seals, the pressure of seal fluid is greater than the pressure of estimating the methane gas in the coal seam.Because seal fluid has seamless characteristic of not boring under pressure, thus strong to the shut-off capacity of boring interior periphery microfissure, methane gas is difficult for revealing, thus it is more quick and precisely reliable that gas pressure is measured.
At loose and soft surrounding rock and the bigger problem of coal hole circumferential crack, the used sealing fluid of measuring cell is to add that less than the rigidity of 5mm and flexible two kinds of solid particles surfactant is formulated by particle diameter at present, and sealing fluid is carried by the high pressure line of handlance, sealing flow container and internal diameter 5mm.Its process is: the sealing fluid for preparing is put into the sealing flow container in advance, then by the handlance water to sealing flow container pressurization, sealing fluid is transported in the middle of the solid at measuring cell two ends by high pressure line under pressure.Because be subjected to the restriction of measuring cell structure, the internal diameter of high pressure line is limited, therefore, carry the particle diameter of sealing fluid solid particle limited, if particle diameter is excessive, then can cause the obstruction of high pressure line, if particle diameter is too small, then can influence the plugging effect of sealing fluid.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of active coal-bed gas pressure measuring instrument and assay method, it can carry the sealing fluid solid particle of different-grain diameter quickly and easily, increases the effect in sealing fluid shutoff crack, improves the property of measuring quick and precisely.
For achieving the above object, the present invention takes following technical scheme: a kind of active coal-bed gas pressure measuring instrument, it is characterized in that: it comprises the two expansion of solids capsules that are arranged in the coal bed drilling, is provided with a solid-liquid mixture storage device between the described two expansion of solids capsules; Described solid-liquid mixture storage device comprises a storage barrel, offers some seal fluid outlet valves on the described storage barrel barrel; Be provided with a sealing fluid feed-line output in the described storage barrel, the input of described sealing fluid feed-line passes boring and connects a fluid storage device, and described fluid storage device connects a pressure source device; Be equipped with an inflation fluid pipeline in the described solid-liquid mixture storage device, the two ends of described inflation fluid pipeline are plugged in respectively in the described expansion of solids capsule with its homonymy, the described expansion of solids capsule that is positioned at the boring outside also is inserted with an inflation fluid intake pipeline, and the input of described inflation fluid intake pipeline connects a hydraulic power source device; One end of one methane gas pipeline is arranged on described coal bed drilling inboard, and the other end of described methane gas pipeline is connected a pressure meter after passing the expansion of solids capsule in inboard described expansion of solids capsule, solid-liquid mixture storage device and the outside successively.
The two ends of the described storage barrel of described solid-liquid mixture storage device respectively connect an adapter head, the other end of two described adapter heads is connected with a tubular configured joint respectively, and the other end of two described tubular configured joints is connected with the described expansion of solids capsule of its homonymy by a joint respectively; The described adapter head that is positioned at the boring outside is provided with three hole caulking gum posts, is positioned at the inboard described adapter head of boring and is provided with two hole caulking gum posts.
Described adapter head end is provided with a circle and is used for and the mutual spacing boss in described tubular configured joint end.
Described fluid storage device comprises a tank body, the top of described tank body is provided with a can, the top of described can is connected with the adapter head of a hollow, the bottom of described adapter head connects a liquid delivery tube, described adapter head top connects a liquid output pipe, the output of described liquid output pipe connects described sealing fluid feed-line, and described liquid output pipe is provided with a unidirectional stop valve; Described can circumferentially be provided with a pressure source capsule, the input of described pressure source capsule connects described pressure source device, described pressure source capsule is provided with a pressure meter and a unidirectional stop valve.
The active determination of coal seam gas pressure method of above-mentioned a kind of analyzer, it may further comprise the steps: 1) with the seal fluid outlet valve closing that arranges on the storage barrel in the solid-liquid mixture storage device, and solid-liquid mixture packed in the storage barrel; 2) connection of solid-liquid mixture storage device being assembled with inflation fluid pipeline, methane gas pipeline, sealing fluid feed-line, two expansion of solids capsules, fluid storage device, pressure source device, pressure meter, inflation fluid intake pipeline and hydraulic power source device is an analyzer, and the analyzer that assembles is inserted in the coal bed drilling; 3) open the hydraulic power source device, the inflation fluid that the hydraulic power source device provides is input in the two expansion of solids capsules by inflation fluid intake pipeline and inflation fluid pipeline, and expansion of solids capsule Expansion sealing under the effect of inflation fluid is lived boring, realizes sealed solid; 4) opening pressure source apparatus, the pressure source that the pressure source device provides is pressed into the sealing fluid feed-line with the sealing fluid in the fluid storage device tank body, enter in the storage barrel through the sealing fluid feed-line, mix with the solid-liquid mixture of packing in advance in the storage barrel, and in the outflow of the seal fluid outlet valve on the storage barrel barrel automatically under the effect of the solid-liquid mixture bulbs of pressure, the liquid sealing is carried out in the crack of pressure measurement borehole circumference, to seal up the methane gas in the borehole circumference crack.
In the described step 4), the pressure that the pressure source device provides is a kind of in the liquids and gases.
The present invention is owing to take above technical scheme, it has the following advantages: 1, the present invention is owing to put into storage barrel in advance with solid-liquid mixture, and do not carry by high pressure line, therefore, not only can avoid the excessive pipe blocking that causes of solid grain size in the sealing fluid, can also carry the sealed solid particle of different-grain diameter, increase the shutoff crack effect of sealing fluid.2, the present invention is owing to can be pressed into the sealing fluid feed-line with the sealing fluid in the fluid storage device by pressure source, enter in the storage barrel through the sealing fluid feed-line, the solid-liquid mixture of packing in advance in the storage barrel is under the effect of wiper seal liquid, seal fluid outlet valve on the storage barrel barrel flows out, realization is to the sealing in pressure measurement borehole circumference crack, therefore, can better reach the purpose of solid sealing liquid body, liquid envelope gas.Structure design of the present invention is simply ingenious, and is easy to operate, can be widely used in the mensuration process of coal-bed gas pressure.
Description of drawings
Fig. 1 is analyzer structural representation of the present invention
Fig. 2 is the solid-liquid mixture memory device structure schematic diagram in the analyzer of the present invention
Fig. 3 is the fluid storage device structural representation in the analyzer of the present invention
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the present invention includes a solid-liquid mixture storage device 2 that is arranged in 1 boring of coal seam, the two ends of solid-liquid mixture storage device 2 respectively connect an expansion of solids capsule 4 by a joint 3.Be equipped with an inflation fluid pipeline 5, a methane gas pipeline 6 and a sealing fluid feed-line 7 in the solid-liquid mixture storage device 2 respectively.The output of sealing fluid feed-line 7 is positioned at solid-liquid mixture storage device 2, and input passes the expansion of solids capsule 4 in the outside, and stretches out boring connection one fluid storage device 8, and fluid storage device 8 connects a pressure source device 9.The input of methane gas pipeline 6 passes inboard expansion of solids capsule 2, puts in boring the inner, and output passes the expansion of solids capsule 4 in the outside, and stretches out boring, connects a pressure meter 10.Insert respectively in the expansion of solids capsule 4 of medial and lateral at the two ends of inflation fluid pipeline 4.The expansion of solids capsule 4 in the outside is provided with an inflation fluid intake pipeline 11 near the position of boring outer end, and the input of inflation fluid intake pipeline 11 connects a hydraulic power source device 12.
As shown in Figure 2, solid-liquid mixture storage device 2 of the present invention comprises that one is used for placing the storage barrel 21 of solid-liquid mixture, offers some seal fluid outlet valves 22 on the barrel of storage barrel 21.The two ends of storage barrel 21 are the adapter head 23 by the cylindrical hollow that is threaded respectively, the other end of two adapter heads 23 respectively is provided with a circle boss 24, two boss 24 correspondence respectively are arranged in the tubular configured joint 25, and spacing mutually with the Ka Tai that tubular configured joint 25 ends arrange, when preventing that tubular configured joint 25 from endwisely slipping along adapter head 23 with adapter head 23 disengagings.The other end of two tubular configured joints 25 respectively is provided with internal thread, can be connected (as shown in Figure 1) with the joint 3 that offers externally threaded expansion of solids capsule 2.Respectively be provided with a caulking gum post 26 that is used for solid-liquid mixture in the sealed storage tube that is bottle stopper shape in two adapter heads 23.The caulking gum post 26 that is positioned at the inboard adapter head 23 of boring is two hole caulking gum posts, be equipped with inflation fluid pipeline 5 and methane gas pipeline 6 in it, the caulking gum post 26 that is positioned at the adapter head 23 in the boring outside is three hole caulking gum posts, is equipped with inflation fluid pipeline 5, methane gas pipeline 6 and sealing fluid feed-line 7 in it.The input of sealing fluid feed-line 7 connects fluid storage device 8 (as shown in Figure 1).
As shown in Figure 3, fluid storage device 8 of the present invention comprises a tank body 81, the top of tank body 81 is provided with the can 82 of a hollow, the top of can 82 is provided with a tank body adapter head 83, tank body adapter head 83 inside connect a liquid delivery tube 85 that is arranged in the tank body by a liquid delivery tube adapter head 84, tank body adapter head 83 tops connect a liquid output pipe 86, liquid output pipe 86 is provided with a unidirectional stop valve 87 near the position of output, 7 (as shown in Figure 1) of output connection sealing fluid feed-line of liquid output pipe 86.Be equipped with a pressure source capsule 88 on the circumferential wall of can 82,9 (as shown in Figure 1) of input connection pressure source device of pressure source capsule 88, the tube wall of pressure source capsule 88 is provided with a pressure meter 89, and pressure source capsule 88 is provided with a unidirectional stop valve 90 near the position of input.
Preset solid-liquid mixture in the storage barrel 21 in the above-mentioned solid-liquid mixture storage device 2, solid-liquid mixture can be the mixture of solid matters such as swell soil, sawdust, flyash and water.
Assay method of the present invention may further comprise the steps:
1) with in the solid-liquid mixture storage device 2, the seal fluid outlet valve 22 offered on storage barrel 21 barrels closes, and the solid-liquid mixture of sealing fluid is packed in the storage barrel 21.
2) assembling with devices such as inflation fluid pipeline 5, methane gas pipeline 6, sealing fluid feed-line 7, two expansion of solids capsules 4, fluid storage device 8, pressure source device 9, pressure meter 10, inflation fluid intake pipeline 11, hydraulic power source devices 12 at solid-liquid mixture storage device 2 is an analyzer, and the analyzer that assembles is inserted in 1 boring of coal seam.
3) open hydraulic power source device 12, the inflation fluid that hydraulic power source device 12 provides is input in the two expansion of solids capsules 4 by inflation fluid intake pipeline 11 and inflation fluid pipeline 5, and expansion of solids capsule 4 Expansion sealing under the effect of inflation fluid is lived boring, realizes sealed solid.
4) the pressure source device 9 outside the unlatching fluid storage device 8, the pressure source that pressure source device 9 provides is pressed into sealing fluid feed-line 7 with the sealing fluid in fluid storage device 8 tank bodies 81, in sealing fluid feed-line 7 enters storage barrel 21, the solid-liquid mixture of packing in advance in sealing fluid and the storage barrel 21 mixes, and the seal fluid outlet valve on storage barrel 21 barrels 22 flows out, the liquid sealing is carried out in the crack of pressure measurement borehole circumference, to seal the methane gas in the borehole circumference crack.
In above-described embodiment, the pressure that pressure source device 9 provides can be water or air, also can be other liquid or gas.In above-described embodiment, the pressure of pressurization should be less than the pressure in the expansion capsule 4 in the solid-liquid mixture storage device 2, is generally less than about 1 MPa to get final product; The pressure of pressurization is greater than the pressure of coal seam 1 in-borehole gas in the solid-liquid mixture storage device 2, just can play sealing function.And the pressure in the expansion of solids capsule 4 are to determine according to the pressure of gas in the coal seam 1, its concrete pressure be defined as prior art, do not repeat them here.
The various embodiments described above only are used for explanation the present invention, and wherein the structure of each parts, connected mode etc. all can change to some extent, and every equivalents and improvement of carrying out on the basis of technical solution of the present invention all should do not got rid of outside protection scope of the present invention.
Claims (6)
1. active coal-bed gas pressure measuring instrument is characterized in that: it comprises the two expansion of solids capsules that are arranged in the coal bed drilling, is provided with a solid-liquid mixture storage device between the described two expansion of solids capsules; Described solid-liquid mixture storage device comprises a storage barrel, offers some seal fluid outlet valves on the described storage barrel barrel; Be provided with a sealing fluid feed-line output in the described storage barrel, the input of described sealing fluid feed-line passes boring and connects a fluid storage device, and described fluid storage device connects a pressure source device; Be equipped with an inflation fluid pipeline in the described solid-liquid mixture storage device, the two ends of described inflation fluid pipeline are plugged in respectively in the described expansion of solids capsule with its homonymy, the described expansion of solids capsule that is positioned at the boring outside also is inserted with an inflation fluid intake pipeline, and the input of described inflation fluid intake pipeline connects a hydraulic power source device; One end of one methane gas pipeline is arranged on described coal bed drilling inboard, and the other end of described methane gas pipeline is connected a pressure meter after passing the expansion of solids capsule in inboard described expansion of solids capsule, solid-liquid mixture storage device and the outside successively.
2. a kind of active coal-bed gas pressure measuring instrument as claimed in claim 1, it is characterized in that: the two ends of the described storage barrel of described solid-liquid mixture storage device respectively connect an adapter head, the other end of two described adapter heads is connected with a tubular configured joint respectively, and the other end of two described tubular configured joints is connected with the described expansion of solids capsule of its homonymy by a joint respectively; The described adapter head that is positioned at the boring outside is provided with three hole caulking gum posts, is positioned at the inboard described adapter head of boring and is provided with two hole caulking gum posts.
3. a kind of active coal-bed gas pressure measuring instrument as claimed in claim 2 is characterized in that: described adapter head end is provided with that a circle is used for and described tubular configured joint end spacing boss mutually.
4. as claim 1 or 2 or 3 described a kind of active coal-bed gas pressure measuring instruments, it is characterized in that: described fluid storage device comprises a tank body, the top of described tank body is provided with a can, the top of described can is connected with the adapter head of a hollow, the bottom of described adapter head connects a liquid delivery tube, described adapter head top connects a liquid output pipe, the output of described liquid output pipe connects described sealing fluid feed-line, and described liquid output pipe is provided with a unidirectional stop valve; Described can circumferentially be provided with a pressure source capsule, the input of described pressure source capsule connects described pressure source device, described pressure source capsule is provided with a pressure meter and a unidirectional stop valve.
5. active determination of coal seam gas pressure method as claim 1～4 analyzer as described in each, it may further comprise the steps:
1) with the seal fluid outlet valve closing that arranges on the storage barrel in the solid-liquid mixture storage device, and swell soil, sawdust, flyash are mixed the solid-liquid mixture that obtains pack in the storage barrel with water;
2) solid-liquid mixture storage device and inflation fluid pipeline, methane gas pipeline, sealing fluid feed-line, two expansion of solids capsules, fluid storage device, pressure source device, pressure meter, inflation fluid intake pipeline and hydraulic power source device being assembled is an analyzer, and the analyzer that assembles is inserted in the coal bed drilling;
3) open the hydraulic power source device, the inflation fluid that the hydraulic power source device provides is input in the two expansion of solids capsules by inflation fluid intake pipeline and inflation fluid pipeline, and expansion of solids capsule Expansion sealing under the effect of inflation fluid is lived boring, realizes sealed solid;
4) opening pressure source apparatus, the pressure source that the pressure source device provides is pressed into the sealing fluid feed-line with the sealing fluid in the fluid storage device tank body, enter in the storage barrel through the sealing fluid feed-line, mix with the solid-liquid mixture of packing in advance in the storage barrel, and in the outflow of the seal fluid outlet valve on the storage barrel barrel automatically under the effect of the solid-liquid mixture bulbs of pressure, the liquid sealing is carried out in the crack of pressure measurement borehole circumference, to seal up the methane gas in the borehole circumference crack.
6. a kind of active determination of coal seam gas pressure method as claimed in claim 5 is characterized in that: in the described step 4), the pressure source that the pressure source device provides is a kind of in the liquids and gases.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010165584XA CN101832128B (en) | 2010-04-30 | 2010-04-30 | Active device and method for measuring pressure of coal-bed gas |
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| CN201010165584XA CN101832128B (en) | 2010-04-30 | 2010-04-30 | Active device and method for measuring pressure of coal-bed gas |
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| CN101832128B true CN101832128B (en) | 2013-07-17 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102230375B (en) * | 2011-06-10 | 2014-05-14 | 中国矿业大学 | Method for monitoring coal bed gas parameter in real time |
| CN102426073B (en) * | 2011-09-05 | 2013-02-20 | 重庆派腾机械设备有限责任公司 | Coal and gas outburst stress collector and manufacturing method thereof |
| CN102562037B (en) * | 2012-01-12 | 2015-09-30 | 山东科技大学 | Quantitative judging method for damage range of coal mine tunnel |
| CN108060903B (en) * | 2017-11-24 | 2019-01-08 | 山东科技大学 | Coal-bed gas pressure measures dynamic self-balance pressurization hole sealing device and method |
| 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 |
| CN110700814A (en) * | 2019-10-28 | 2020-01-17 | 贵州航天凯山石油仪器有限公司 | Method and device for improving sealing reliability of gas well pressure gauge |
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| CN101004130A (en) * | 2007-01-19 | 2007-07-25 | 华北科技学院 | Method for plugging back sensing hole for gas pressure, sealing liquid, pressure valve, and pressure measuring unit |
| CN201412140Y (en) * | 2009-01-13 | 2010-02-24 | 中矿龙科能源科技（北京）有限公司 | Bedding hole coal bed gas pressure measuring device |
| CN101684729A (en) * | 2007-01-19 | 2010-03-31 | 华北科技学院 | Coal-seam gas pressure test system |
| CN201687466U (en) * | 2010-04-30 | 2010-12-29 | 华北科技学院 | Active coal seam gas pressure tester |
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2010
- 2010-04-30 CN CN201010165584XA patent/CN101832128B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101004130A (en) * | 2007-01-19 | 2007-07-25 | 华北科技学院 | Method for plugging back sensing hole for gas pressure, sealing liquid, pressure valve, and pressure measuring unit |
| CN101684729A (en) * | 2007-01-19 | 2010-03-31 | 华北科技学院 | Coal-seam gas pressure test system |
| CN201412140Y (en) * | 2009-01-13 | 2010-02-24 | 中矿龙科能源科技（北京）有限公司 | Bedding hole coal bed gas pressure measuring device |
| CN201687466U (en) * | 2010-04-30 | 2010-12-29 | 华北科技学院 | Active coal seam gas pressure tester |
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