CN102128047B - Gas-slag separation and recovering system for drilling construction - Google Patents
Gas-slag separation and recovering system for drilling construction Download PDFInfo
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- CN102128047B CN102128047B CN2011100279073A CN201110027907A CN102128047B CN 102128047 B CN102128047 B CN 102128047B CN 2011100279073 A CN2011100279073 A CN 2011100279073A CN 201110027907 A CN201110027907 A CN 201110027907A CN 102128047 B CN102128047 B CN 102128047B
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Abstract
The invention belongs to the field of safety of coal mine downhole gas extraction and drilling construction, and particularly relates to a gas-slag separation and recovering system for drilling construction, which comprises a drill and a water-spraying dust prevention system, wherein a drill stem kit of the drill is provided with a three-way hole packer; the three-way hole packer is connected with a connection pipe; the connection pipe is connected with a transmission pipeline through a three-way pipe; the connection pipe is provided with a throttling valve which is used for controlling the flow of drill cuttings to prevent the transmission pipeline from being blocked by the excessive drill cuttings; one end of the transmission pipeline is connected with a blower, and the other end of the transmission pipeline is connected with a closed space; the other end of the closed space is connected with a negative-pressure drainage pipe connected to a ground gas extraction system; and the closed space is provided with the water-spraying dust prevention system and a slag removal door which are used for separating the drill cuttings. The recovering system provided by the invention can safely and efficiently separate the drill cuttings and gas in the drilling process of the drill in coal mine downhole gas extraction and drilling construction.
Description
Technical field
The invention belongs to coal mine gas extraction borehole construction safety field, particularly relate to a kind of drilling construction gas quarrel separation and recovery system.
Background technology
In the process of projecting coal bed construction base plate protrusion-dispelling boring; often there will be gas to vomit from boring; spray simultaneously the phenomenon of a large amount of coal borer bits; so just caused that working space gas raises; construction drill is forced to stop work; operation occurs off and on; there will be again local gas to transfinite and do not check blindness construction out; cause the generation of gas accident; although traditional employing mine car is collected drilling cuttings and gas, can solve the drilling construction while holing spray orifice not, the chance spray orifice of holing just can't solve when serious.A large amount of gas must be discharged into by booster the exhaust ventilation system of mine after to working space, gushing out, and the gas that ventilation system is discharged can not be recycled, and directly is discharged into airspace, 1m
3The emptying 21m that is equivalent to of gas
3The harm of carbon dioxide to atmospheric ozone layer, caused environment pollution and the wasting of resources.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of can safety in the underground construction mash gas pumping drilling process of colliery, the recovery system of separating efficiently drilling cuttings and gas.
content of the present invention is that it comprises rig and watering dust prevention system, the drilling rod of described rig is set with the threeway hole packer, described threeway hole packer is connected with tube connector, tube connector is connected with conveyance conduit by tee piece, on described tube connector, be provided with control drilling cuttings flow and be unlikely to guarantee conveyance conduit the choke valve that stops up because drilling cuttings is excessive, one end of described conveyance conduit is connected with blast fan, the conveyance conduit other end is connected with confined space, the other end of described confined space is connected with the negative pressure releasing pipe that is connected with ground gas extraction system, described confined space is equipped with for separating of the watering dust prevention system of drilling cuttings and deslagging door.
On described tee piece, be provided with the throttling gate valve of regulating be used to hole exhaust and drilling cuttings tolerance; The tail end of described threeway hole packer is provided with the joint with packing_seal, and joint is provided with the moistening feed pipe of blastproof maintenance packing; The angle be used to two pipelines connecting blast fan and tube connector of described tee piece is less than 90 °; Described tube connector is the flame-retardant and anti-static high-pressure hose.
The invention has the beneficial effects as follows, the present invention utilizes the gas pressure of ejection in boring and utilizes the air pressure of blast fan to do power, drive methane gas and drilling cuttings, reach methane gas and drilling cuttings are rejected to another space, make working space reach the purpose of safety work, effectively improved the operation work efficiency, guaranteed construction safety, comprehensively recyle the gas resources generating, reduce gas to atmosphere airborne release contaminated environment.
When drilling machine construction is worn coal, with threeway hole packer (being the threeway metal tube), will hole the import envelope in fact, drilling rod passes threeway hole packer center and creeps into forward, high pressure gas gas and drilling cuttings are by the boring threeway hole packer of flowing through, at tube connector of threeway hole packer external application, being preferably bourdon tube derives, and at the tail end of tube connector, with a tee piece, accesses conveyance conduit, conveyance conduit adopts the blast fan air-supply, is preferably Roots blower.make methane gas and drilling cuttings deliver to a confined space along conveyance conduit, the external mine drainage system of confined space, drainage system is extracted methane gas out in the extraction process, drilling cuttings by watering dust prevention system precipitation and separation in confined space, in the drilling construction process, the drilling cuttings of boring ejection and methane gas are in brill outwards in the ejection process, along the threeway hole packer tube connector of flowing through, enter conveyance conduit, all in the pipeline of sealing, flow, can not enter working space, can not cause that the working space gas density raises, after conveyance conduit enters confined space, after the gas extraction is complete, open the air door of confined space, drilling cuttings is cleaned out, confined space can be used as construction drill again again.Confined space of the present invention can be that the crossdrift tunnel of a utilization installs fire dam and deslagging door additional, and spatial volume is 100m
2Left and right, do not need to increase too many investment, economical rationality.Watering dust prevention system of the present invention comprises water pump and dispersing device, for precipitating and separating drilling cuttings, is beneficial to recycle methane gas.
The present invention is in application process, and in boring, the drilling cuttings of ejection is not of uniform size, and when too large, discharge of pipes is not smooth, therefore on tee piece, is provided with a throttling gate valve, regulates for boring exhaust and drilling cuttings tolerance.In addition, boring air pressure hour, can normally discharge for guaranteeing gas and drilling cuttings, and the connecting pipe between threeway hole packer and tee piece is set to 10m and is advisable.
In practice of construction, existence activity space between drilling rod and threeway hole packer, the gas in boring can be discharged by threeway hole packer tail end, for guaranteeing safety, at threeway hole packer tail end, connect a joint, an external feed pipe, be provided with packing in feed pipe on joint, often opening feed pipe supplies water, keep packing moistening, prevent that drilling rod and the friction of threeway hole packer from producing spark, the security incident such as blast, described packing is often fastening, makes it air tight.
The present invention is for not making blast fan carry air conducting to enter boring, and the angle be used to two pipelines connecting blast fan and tube connector of tee piece, less than 90 °, is advisable with 30 °.
Conveyance conduit of the present invention and tube connector adopt the soft releasing pipe of flame-retardant and anti-static high pressure, prevent from producing spark with the drilling cuttings collision, and security incident occurs.
The accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
In the drawings, 1 blast fan, 2 rock mass, 3 threeway hole packers, 4 tube connectors, 5 conveyance conduits, 6 confined spaces, 7 negative pressure releasing pipes, 8 rigs, 9 choke valves, 10 coal bodies, 11 drilling rods, 12 watering dust prevention systems, 13 deslagging doors, 14 peep holes.
The specific embodiment
as shown in drawings, the present invention includes rig 8 and watering dust prevention system 12, the drilling rod 11 that it is characterized in that described rig 8 is set with threeway hole packer 3, described threeway hole packer 3 is connected with tube connector 4, tube connector 4 is connected with conveyance conduit 5 by tee piece, on described tube connector 4, be provided with and control the drilling cuttings flow to guarantee that conveyance conduit 5 is unlikely to the choke valve 9 that stops up because drilling cuttings is excessive, one end of described conveyance conduit 5 is connected with blast fan 1, conveyance conduit 5 other ends are connected with confined space 6, the other end of described confined space 6 is connected with the negative pressure releasing pipe 7 that is connected with ground gas extraction system, described confined space 6 is equipped with for separating of the watering dust prevention system 12 of drilling cuttings and deslagging door 13.
On described tee piece, be provided with the throttling gate valve of regulating be used to hole exhaust and drilling cuttings tolerance; The tail end of described threeway hole packer 3 is provided with the joint with packing_seal, and joint is provided with the moistening feed pipe of blastproof maintenance packing; The angle be used to two pipelines connecting blast fan 1 and tube connector 4 of described tee piece is less than 90 °; Described tube connector 4 is the flame-retardant and anti-static high-pressure hose.
On confined space 6 of the present invention, be provided with peep hole 14, when peep hole 14, be used to observing the situation in confined space 6, needs to open the intensity of deslagging door 13 and 12 waterings of watering dust prevention system for judgement.
During rig 8 construction of the present invention, on hydraulic drill rig 8 commonly used, installed down-hole impact drill bit additional, adopt and press wind drive down-hole impact drill bit to creep into, solved the problem that the competent bed rate of penetration is slow, work efficiency is low, the compressed air pressure of supplying with rig 8 is controlled at 1-2 atmospheric pressure, and Roots blower 1 adopts NSR-125T type, power 15KW, in use general pressure is at 0.025Mpa, and the pressure of negative pressure releasing pipe 7 generally remains on normal extraction pressure 0.04-0.06Mpa.
During construction drill of the present invention, after starting rig 8, open the construction of pressure ventilation pipe switch air feed, drilling rod 11 passes rock mass 2 and enters coal body 10, start simultaneously Roots blower 1, open the throttling gate valve to appropriate location, the drilling cuttings after drilling construction and gas are disposed to confined space 6 continuously by conveyance conduit 5.
Claims (4)
1. drilling construction gas quarrel separation and recovery system, comprise rig (8) and watering dust prevention system (12), the drilling rod (11) that it is characterized in that described rig (8) is set with threeway hole packer (3), described threeway hole packer (3) is connected with tube connector (4), tube connector (4) is connected with conveyance conduit (5) by tee piece, on described tube connector (4), be provided with control drilling cuttings flow and be unlikely to the choke valve that stops up because drilling cuttings is excessive (9) to guarantee conveyance conduit (5), one end of described conveyance conduit (5) is connected with blast fan (1), conveyance conduit (5) other end is connected with confined space (6), the other end of described confined space (6) is connected with the negative pressure releasing pipe (7) that is connected with ground gas extraction system, described confined space (6) is equipped with for separating of the watering dust prevention system (12) of drilling cuttings and deslagging door (13), the angle be used to two pipelines connecting blast fan (1) and tube connector (4) of described tee piece is less than 90 °.
2. a kind of drilling construction gas quarrel separation and recovery system according to claim 1, is characterized in that on described tee piece being provided with the throttling gate valve of regulating be used to hole exhaust and drilling cuttings tolerance.
3. a kind of drilling construction gas quarrel separation and recovery system according to claim 1, is characterized in that the tail end of described threeway hole packer (3) is provided with the joint with packing_seal, and joint is provided with the moistening feed pipe of blastproof maintenance packing.
4. a kind of drilling construction gas quarrel separation and recovery system according to claim 1, is characterized in that described tube connector (4) is the flame-retardant and anti-static high-pressure hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100279073A CN102128047B (en) | 2011-01-26 | 2011-01-26 | Gas-slag separation and recovering system for drilling construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100279073A CN102128047B (en) | 2011-01-26 | 2011-01-26 | Gas-slag separation and recovering system for drilling construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102128047A CN102128047A (en) | 2011-07-20 |
| CN102128047B true CN102128047B (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100279073A Expired - Fee Related CN102128047B (en) | 2011-01-26 | 2011-01-26 | Gas-slag separation and recovering system for drilling construction |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425446B (en) * | 2011-12-27 | 2013-08-21 | 重庆市能源投资集团科技有限责任公司 | Gas-residue separating integrated critical pumping device used for coal mine underground hole-drilling |
| CN103195469A (en) * | 2013-04-09 | 2013-07-10 | 重庆大学 | Pneumatic type gas and slag separation device and method |
| CN104481580B (en) * | 2014-12-23 | 2016-08-17 | 河南理工大学 | A kind of down-hole coal bed mash gas pumping drilling restorative procedure and the device of use thereof |
| CN105649531B (en) * | 2015-12-21 | 2017-12-05 | 中国石油天然气集团公司 | One kind is without rig drilling equipment |
| CN106437820A (en) * | 2016-12-21 | 2017-02-22 | 重庆南桐矿业有限责任公司 | Current-layer drainage and drilling dustproof flame-retardant structure and operation method |
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| SU661116A1 (en) * | 1974-05-05 | 1979-05-05 | Shumko Yurij | Method of degassing worked-out space |
| EP0067427A2 (en) * | 1981-06-10 | 1982-12-22 | Maschinenfabrik Korfmann GmbH | Gas suction method in coal mining, and suction pipe to perform this method |
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2011
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| CN201050381Y (en) * | 2007-06-12 | 2008-04-23 | 淮南矿业(集团)有限责任公司 | Blowout preventer for safety drilling of outburst coal seam |
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| CN102128047A (en) | 2011-07-20 |
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Granted publication date: 20131120 Termination date: 20200126 |