CN102312661A - Drilling gas blow-out preventing system - Google Patents
Drilling gas blow-out preventing system Download PDFInfo
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- CN102312661A CN102312661A CN2010102200447A CN201010220044A CN102312661A CN 102312661 A CN102312661 A CN 102312661A CN 2010102200447 A CN2010102200447 A CN 2010102200447A CN 201010220044 A CN201010220044 A CN 201010220044A CN 102312661 A CN102312661 A CN 102312661A
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Abstract
The invention provides a drilling gas blow-out preventing system. The system comprises a communication device communicated with a drilled hole, a plurality of holes are hollowed on the pipeline communicated with the drilled hole in the communication device and in the circumferential direction, a stop block is arranged in each hole, and the stop block is partially placed outside the pipeline; the system also comprises more than one hydraulic cylinder, a piston of the more than one hydraulic cylinder is connected with a lantern ring, the lantern ring is sleeved on the outer wall of the pipeline, and the piston of the hydraulic cylinder is connected with a driving mechanism; and the driving mechanism drives the piston to move, the piston drives the lantern ring to move axially along the outer wall of the pipeline to extrude the part of the stop block placed outside the pipeline, and the stop block extrudes a drill rod passing through the interior of the communication device and extending into the drilled hole. Through the system, coal bed gas in the drilled hole is fully released, gas ultra-limit accidents are avoided, and the safety of construction in a mine is improved.
Description
Technical field
The present invention relates to prevent to hole under the coal mine gas exceeding limit technology, relate in particular to a kind of boring gas blowout prevention system.
Background technology
In the coal mine down-hole drilling work progress, if gas bearing capacity is big in the coal seam of construction, pressure is higher, very likely cause spray orifice, if do not take corresponding measure, possibly cause gas exceeding limit in the tunnel.
For preventing that spray orifice from causing gas exceeding limit, in the prior art, a part of methane gas of ejection gets into the mash gas extraction pipeline via the coal gas separator in the boring.Another part gets into soft deslagging coal storage device with the bulky grain coal dust through scalable high strength linkage and threeway, gets into the mash gas extraction pipeline through the gas pumping device then.The coal dust powdered granule of ejection partly gets into the coal gas separator, and through separating postprecipitation in the coal gas separation unit bottoms, most of coal dust gets into soft deslagging coal storage device, threeway and scalable high strength linkage.
Yet prior art is when strong spray orifice phenomenon occurring, because the extraction amount of extraction system is limited; Cause a large amount of gas to get into the coal storage device with pulverized coal particle; Be full of whole storage device with coal dust, under the acting in conjunction of gas pressure and ejecta, very likely damage storage device; Then cause high value gas exceeding limit accident, produce to the colliery and bring great potential safety hazard.
Summary of the invention
The present invention provides a kind of boring gas blowout prevention system, in order to address the deficiencies of the prior art, is implemented in gas density and intercepts when higher, opens obstruct when gas density drops to safety value, avoids causing the gas exceeding limit accident, has improved safety of construction under the mine.
The present invention provides a kind of boring gas blowout prevention system; Comprise the connection device that is communicated with boring; In the said connection device with pipeline that said boring is communicated with on, a plurality of holes of hollow out along the circumferential direction, a stopper is set in each described hole, said stopper partly places outside the said pipeline;
Said boring gas blowout prevention system also comprises: an above hydraulic cylinder, and the piston of a said above hydraulic cylinder is connected with a collar, and the said collar is set in said pipeline outer wall, and the piston of said hydraulic cylinder is connected with a driving mechanism;
The said piston motion of said drive mechanism; Said piston drives the said collar and moves axially, pushes the part that places said pipeline outer in the said stopper along said pipeline outer wall, and the drilling rod of boring is passed, stretches in said stopper extruding from said connection device inside.
Aforesaid boring gas blowout prevention system, said driving mechanism is the two-position four-way rotary valve, and the water inlet end of said two-position four-way rotary valve is connected with high-pressure water pipe under the mine, and the water side is respectively a said above hydraulic cylinder and supplies water to promote said piston motion.
Aforesaid boring gas blowout prevention system, said stopper one end rotatably is fixed on the said connection device through securing member.
Aforesaid boring gas blowout prevention system, described hole is square.
Aforesaid boring gas blowout prevention system, said securing member is pin.
Aforesaid boring gas blowout prevention system, said connection device is a Multi-ported device spare.
Aforesaid boring gas blowout prevention system also comprises: guard aperture pipe, scalable high strength linkage, threeway device, soft deslagging coal storage device, coal gas separator, gas pumping pipeline and gas pumping device;
Said guard aperture pipe places boring; Said connection device is communicated with said guard aperture pipe, said scalable high strength linkage and said coal gas separator respectively; Said scalable high strength linkage is connected with said soft deslagging coal storage device through said threeway device; Said coal gas separator and said soft deslagging coal storage device are connected to said gas pumping pipeline through said gas pumping device respectively.
Boring gas blowout prevention provided by the invention system; When gas density is higher in boring; Adopt boring gas blowout hookup that gas is intercepted, when gas density drops to safety value, adopt boring gas blowout hookup to open obstruct, coal-bed gas fully discharged in realization will be holed; Avoid causing the gas exceeding limit accident, improved safety of construction under the mine.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a boring gas blowout prevention system embodiment structural representation provided by the invention;
The embodiment that Fig. 2 A provides for Fig. 1 opens the obstruct sketch map;
Fig. 2 B intercepts sketch map for the embodiment that Fig. 1 provides;
Fig. 3 is another boring gas blowout prevention system embodiment structural representation provided by the invention;
The embodiment that Fig. 4 A provides for Fig. 3 opens the obstruct sketch map;
Fig. 4 B intercepts sketch map for the embodiment that Fig. 3 provides;
Fig. 5 is another boring gas blowout prevention system embodiment structural representation of the present invention;
The concrete structure sketch map that is communicated with the device place among the embodiment that Fig. 6 provides for Fig. 5.
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
A boring gas blowout prevention system embodiment provided by the invention; Referring to Fig. 1; This boring gas blowout prevention system comprises: the connection device 11 that is communicated with boring; Be communicated with on the pipeline 12 that is communicated with boring in the device 11, a plurality of holes 13 of hollow out along the circumferential direction, a stopper 14 is set in each hole 13, stopper 14 parts place outside the pipeline 12;
This system also comprises: the piston 16 of 15, one above hydraulic cylinders 15 of an above hydraulic cylinder is connected with a collar 17, and the collar 17 is set in pipeline 12 outer walls, and the piston 16 of hydraulic cylinder 15 is connected with a driving mechanism 18;
16 motions of driving mechanism 18 driven plunger, piston 16 drives the collar 17 and moves axially, pushes the part that places in the stopper 14 outside the pipeline 12 along pipeline 12 outer walls, and the drilling rod 19 of boring is passed, stretched into to stopper 14 extruding from being communicated with device 11 inside.
Concrete; Connection device 11 in the boring gas blowout prevention system can be one two a logical device; This end pipeline 12 that is communicated with device 11 is communicated with boring, and drilling rod 19 is from being communicated with other end entering connection device 11 inside of device 11, and from pipeline 12, passes and stretch in the boring.
When using boring gas blowout prevention system, can adopt the gas density in the tunnel under the sensor measurement mine, when gas density is higher than a certain safety value; Can the methane gas of high concentration be intercepted,, adopt 16 motions of driving mechanism 18 driven plunger referring to Fig. 2 A and Fig. 2 B; The piston 16 motion drive collars 17 move axially along the outer wall of pipeline 12, and owing to stopper 14 is arranged in the hole 13, and part places outside the pipeline 12; Therefore; The collar 17 moves in the extruding stopper 14 and places the part outside the pipeline 12, and stopper 14 further extruding passes, stretches into the interior drilling rod 19 of boring from being communicated with device 11 inside, at this moment; Stopper 14 is filled drilling rod 19 and is communicated with the most of annular gap between device 11 inside, thereby has stoped methane gas to vomit.When gas density is reduced to safety value when following; Then open the obstruct in the system, make the collar 17 away from stopper 14, stopper 14 is away from drilling rod 19; Then recover annular gap again between drilling rod 19 and the connection device 11, made the methane gas of the interior ejection of boring in this gap, to pass through.
Boring gas blowout prevention provided by the invention system; When gas density is higher in boring; Adopt boring gas blowout hookup that gas is intercepted, when gas density drops to safety value, adopt boring gas blowout hookup to open obstruct, coal-bed gas fully discharged in realization will be holed; Avoid causing the gas exceeding limit accident, improved safety of construction under the mine.
As a preferred embodiment; The boring gas blowout prevention system that the embodiment of the invention provides, driving mechanism 18 wherein can be the two-position four-way rotary valve, because water under high pressure aboundresources under the mine; Can be used as the power resource of driving mechanism 18 promotion pistons; Therefore, can the water inlet end P of two-position four-way rotary valve be connected with high-pressure water pipe under the mine, it is that hydraulic cylinder 15 supplies water that water side A, water side B can be connected to come with an above hydraulic cylinder 15 respectively; Thereby promote piston 16 motions in the hydraulic cylinder 15, the concrete connected mode of two-position four-way rotary valve is referring to Fig. 3.
As the vitals of realizing intercepting; Drive the collar 17 motions by piston 16 motions; And then extruding stopper 14, the shape of stopper 14 can be as shown in Figure 4, and the one of which end rotatably is fixed on the hole 13 that is communicated with in the device 11 through securing member 20; Hole 13 can be arranged to square, can certainly be arranged to other shapes.Securing member 20 can be pin.Stopper 14 the other end are placed in outside the pipeline 12.
Referring to Fig. 4 A and Fig. 4 B, the manual rotary valve of two-position four-way has four interfaces, i.e. water inlet end P, backwater end R, water side A and water side B, and it is the driving mechanism 18 of hydraulic cylinder 15; Hydraulic cylinder 15 promotes piston 16 motions through the flow direction that changes pressure fluid, and then promotes the collar 17 near the boring motion or away from the boring motion; Provided stopper 14 among Fig. 4 A and Fig. 4 B and be 6 situation, certainly not as restriction.Before stopper 14 is installed; Can on pipeline 12, cut out six square holes, stopper 14 is installed in the square hole 13, and get through eye at an end of stopper 14; On hole 13, also only is the shape that has provided a kind of stopper 14 with dowel fixes among Fig. 4 A and Fig. 4 B.When move near boring or away from boring direction in the collar 17 edges, drive stopper 14 and rotate around pin.
When the methane gas concentration of ejection in the boring is higher than safety value; But the piston that manually promotes hydraulic cylinder 15 16 motions of manual operation two-position four-way rotary valve; And then promote the collar 17 and travel forward, the collar 17 drives stopper 14 motions again, and stopper 14 chokes drilling rod 19; Fill drilling rod 19 and the most of annular gap that is communicated with 11 of devices, thereby stop gas to vomit.
When the construction site gas density drops to a certain safety value, open obstruct, let gas in the hole, overflow; This moment, the environment gas density slowly raise, and when causing when transfiniting, intercepted once more; Reciprocation cycle like this; Gas can not cause when transfiniting again in the hole, opens obstruct, continues construction.
The boring gas blowout prevention system that present embodiment provides changes passive blowout prevention for initiatively blowout prevention, makes full use of on-the-spot power resource.Easy to use, simple to operate, reliability is high.Cost is low, and it is little to take up room.
As shown in Figure 5, this system can also comprise guard aperture pipe 21, scalable high strength linkage 22, threeway device 23, soft deslagging coal storage device 24, coal gas separator 25, gas pumping pipeline 26 and gas pumping device 27; Wherein, the connection device 11 shown in Fig. 5 is a Multi-ported device spare, the structure of this Multi-ported device spare and with the connected mode of miscellaneous part referring to previous embodiment and shown in Figure 6.
Wherein, 21 pairs of borings of guard aperture pipe play a protective role, and can also the space sealing in the boring be got up.Scalable high strength linkage 22 is because its scalability is applicable to different tunnels just.
When the construction site gas density drops to a certain safety value; Open the obstruct of the stopper 14 that is communicated with device 11 inside through driving mechanism 18; Let gas in the hole, overflow, owing to contain pulverized coal particle in the methane gas, can be to stopping up gas pumping device 27 and gas pumping pipeline 26; Therefore, need to separate with pulverized coal particle through 25 pairs of methane gas of coal gas separator.In addition, methane gas also gets into soft deslagging coal storage device 24 through scalable high strength linkage 22 and threeway device 23 backs, and this device is stored mixture of coal in the methane gas; And methane gas is got into gas pumping pipeline 26 through gas pumping device 27; This moment, the environment gas density slowly raise, and when might causing when transfiniting, promoted pistons 16 motions and then extruding stopper 14 intercepts the most of annular gap that is communicated with between devices 11 and the drilling rod 19 through driving mechanism 18; Reciprocation cycle like this; Gas can not cause when transfiniting again in the hole, opens obstruct, continues construction.
Boring gas blowout prevention provided by the invention system when gas density is higher in boring, adopts the gas blowout hookup of holing that gas is intercepted;, gas density adopt boring gas blowout hookup to open obstruct when dropping to safety value; Coal-bed gas fully discharged in realization will be holed, and methane gas is collected, and mixture of coal in the methane gas is stored; Avoid causing the gas exceeding limit accident, improved safety of construction under the mine.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (7)
1. a boring gas blowout prevention system comprises the connection device that is communicated with boring, it is characterized in that,
In the said connection device with pipeline that said boring is communicated with on, a plurality of holes of hollow out along the circumferential direction, a stopper is set in each described hole, said stopper partly places outside the said pipeline;
Said boring gas blowout prevention system also comprises: an above hydraulic cylinder, and the piston of a said above hydraulic cylinder is connected with a collar, and the said collar is set in said pipeline outer wall, and the piston of said hydraulic cylinder is connected with a driving mechanism;
The said piston motion of said drive mechanism; Said piston drives the said collar and moves axially, pushes the part that places said pipeline outer in the said stopper along said pipeline outer wall, and the drilling rod of boring is passed, stretches in said stopper extruding from said connection device inside.
2. boring gas blowout prevention according to claim 1 system; It is characterized in that; Said driving mechanism is the two-position four-way rotary valve, and the water inlet end of said two-position four-way rotary valve is connected with high-pressure water pipe under the mine, and the water side is respectively a said above hydraulic cylinder and supplies water to promote said piston motion.
3. boring gas blowout prevention according to claim 1 and 2 system is characterized in that said stopper one end rotatably is fixed on the said connection device through securing member.
4. boring gas blowout prevention according to claim 3 system is characterized in that described hole is square.
5. boring gas blowout prevention according to claim 4 system is characterized in that, said securing member is pin.
6. boring gas blowout prevention according to claim 5 system is characterized in that said connection device is a Multi-ported device spare.
7. according to the said boring gas of claim 6 blowout prevention system, it is characterized in that, also comprise: guard aperture pipe, scalable high strength linkage, threeway device, soft deslagging coal storage device, coal gas separator, gas pumping pipeline and gas pumping device;
Said guard aperture pipe places boring; Said connection device is communicated with said guard aperture pipe, scalable high strength linkage and coal gas separator respectively; Said scalable high strength linkage is connected with said soft deslagging coal storage device through said threeway device; Said coal gas separator and said soft deslagging coal storage device are connected to said gas pumping pipeline through said gas pumping device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102200447A CN102312661A (en) | 2010-07-01 | 2010-07-01 | Drilling gas blow-out preventing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102200447A CN102312661A (en) | 2010-07-01 | 2010-07-01 | Drilling gas blow-out preventing system |
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| CN102312661A true CN102312661A (en) | 2012-01-11 |
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| CN2010102200447A Pending CN102312661A (en) | 2010-07-01 | 2010-07-01 | Drilling gas blow-out preventing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775120A (en) * | 2014-01-20 | 2014-05-07 | 中国矿业大学 | Method for realizing drilling and hole sealing based on drill cuttings during uplink gas extraction |
Citations (7)
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| US4440450A (en) * | 1982-08-18 | 1984-04-03 | Slurry Mining Engineering Inc. | Borehole mining valve actuation |
| CN2042109U (en) * | 1988-10-21 | 1989-08-02 | 煤炭工业部煤炭科学研究院重庆研究所 | All-hydraulic drilling machine |
| CN201037427Y (en) * | 2007-04-02 | 2008-03-19 | 中国矿业大学 | Extrusive danger coal bed safety guide spraying drilling device |
| CN101413399A (en) * | 2008-12-12 | 2009-04-22 | 淮南矿业(集团)有限责任公司 | Drill hole spray safety protection system |
| CN201246099Y (en) * | 2008-09-05 | 2009-05-27 | 煤炭科学研究总院重庆研究院 | Hydraulic drive rig power head |
| CN201277057Y (en) * | 2008-05-29 | 2009-07-22 | 秦长江 | Fully-mechanized mining caving coal working surface top coal gas drainage apparatus |
| CN201714332U (en) * | 2010-07-01 | 2011-01-19 | 淮南矿业(集团)有限责任公司 | Drilling gas spraying-preventing system |
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2010
- 2010-07-01 CN CN2010102200447A patent/CN102312661A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440450A (en) * | 1982-08-18 | 1984-04-03 | Slurry Mining Engineering Inc. | Borehole mining valve actuation |
| CN2042109U (en) * | 1988-10-21 | 1989-08-02 | 煤炭工业部煤炭科学研究院重庆研究所 | All-hydraulic drilling machine |
| CN201037427Y (en) * | 2007-04-02 | 2008-03-19 | 中国矿业大学 | Extrusive danger coal bed safety guide spraying drilling device |
| CN201277057Y (en) * | 2008-05-29 | 2009-07-22 | 秦长江 | Fully-mechanized mining caving coal working surface top coal gas drainage apparatus |
| CN201246099Y (en) * | 2008-09-05 | 2009-05-27 | 煤炭科学研究总院重庆研究院 | Hydraulic drive rig power head |
| CN101413399A (en) * | 2008-12-12 | 2009-04-22 | 淮南矿业(集团)有限责任公司 | Drill hole spray safety protection system |
| CN201714332U (en) * | 2010-07-01 | 2011-01-19 | 淮南矿业(集团)有限责任公司 | Drilling gas spraying-preventing system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775120A (en) * | 2014-01-20 | 2014-05-07 | 中国矿业大学 | Method for realizing drilling and hole sealing based on drill cuttings during uplink gas extraction |
| CN103775120B (en) * | 2014-01-20 | 2016-01-20 | 中国矿业大学 | A kind of up mash gas pumping drilling drilling cuttings method for sealing |
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Application publication date: 20120111 |