CN103352685A - Gas injection point retreating type gas injection device in underground gasification system - Google Patents
Gas injection point retreating type gas injection device in underground gasification system Download PDFInfo
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- CN103352685A CN103352685A CN2013103270351A CN201310327035A CN103352685A CN 103352685 A CN103352685 A CN 103352685A CN 2013103270351 A CN2013103270351 A CN 2013103270351A CN 201310327035 A CN201310327035 A CN 201310327035A CN 103352685 A CN103352685 A CN 103352685A
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- 238000002347 injection Methods 0.000 title claims abstract description 126
- 239000007924 injection Substances 0.000 title claims abstract description 126
- 238000002309 gasification Methods 0.000 title claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 95
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 21
- 238000007569 slipcasting Methods 0.000 claims description 16
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000003034 coal gas Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The invention discloses a gas injection point retreating type gas injection device in an underground gasification system, which comprises a gasification agent conveying pipe; the gasification agent conveying pipes are respectively sleeved with sleeves; the sleeve is provided with at least one hole; the gasification agent delivery pipe is positioned in the sleeve and is internally provided with a one-way stop valve, a grouting port and a gas injection port; the grouting port extends outwards to form a grouting pipeline; the side wall of the grouting pipeline is provided with a guide hole; the gas injection port is provided with an opening device; the opening device comprises a sealing cover, a supporting rod, a one-way plug and a traction rope. The gas injection point retreating type gas injection device in the underground gasification system can automatically open the rear gas injection point while starting grouting operation, does not need to manually control the opening of the rear gas injection point, and brings great convenience to workers. Can prevent the cracking of the injected slurry in the gasifying agent conveying pipe and effectively prevent the gasifying agent from flowing to the gasified area through the one-way valve and the crack of the injected slurry.
Description
Technical field
The present invention relates to the underground coal gasification(UCG) production field, particularly injection point backing formula gas injection device in a kind of underground gasification system.
Background technology
Owing to there are a large amount of manually can't exploit or uneconomic coal resources of man-made recovery, people begin to carry out the research of coal gasification technology very early, the Chinese patent of publication number CN1298058A " a kind of underground gasification furnace of in mine, producing coal gas ", its structure lacks the gas injection control of air injection pipe in the coal seam, therefore exist coal combustion insufficient, the deficiency that the coal utilization rate is low; The Chinese patent of publication number CN1112188A " gasifying method for coal seam " adopts the piecemeal molten existing injection point backing of air injection pipe cause for gossip of opening of fusing method; Consequently gas can also along obsolete air injection pipe to the coal seam gas injection of having burnt, bring unsafe hidden danger to production; The Chinese patent of publication number CN1169501A " coal-bed gasifying method of gas-injection point backing while changing tube " is to put into many appendixs to realize injection point backing in production tunnel, coal seam, and this kind method complex process cost is high; Also have the Chinese patent " long-passage and large-section underground coal gasification in mine " of publication number CN 1169501A, the Chinese patent " coal-bed gasifying method of gas-injection point backing while changing tube " of publication number CN 1121138A, the Chinese patent " multi-pour-gathering channel alternating moving bed longwall coal seam gasification method " of publication number CN 1172842A etc., all be the research that has the shaft underground gasification technology to carry out to foundation, but above-mentioned patent disclosure all is to be based upon a kind of " U " shape or " mountain " shape mine and gasifying process thereof, and built coal gasification systems does not allow that personnel are with regard near operation; Carried out the many times field trial of Coal Gasification both at home and abroad, but the time of operation is not long, do not realize normal underground coal gasification(UCG) production, the technical problem underlying that runs into be can't be stable the control gasification, the one, gasifying agent flows in gasification tunnel wantonly, all ribs of gasification tunnel both sides all are exposed in the air, burning block on the rib rapidly against the wind and on, cause shorten gas-making period, the gasification of coal quantitative change is few, the contact with air burning of flowing in the part coal gas that simultaneously gasification produces and the passage degenerates the outlet gas quality, and rate of gasification is low; The 2nd, there is not good way that the combustion dead zone is filled, cause surface subsidence, simultaneously, the mass air flow in the gasification tunnel directly passes through from slump, and does not contact unburned coal seam, gasification tunnel both sides, so that the underground gasification process worsens, gasification efficiency is low.For the Chinese patent that addresses the above problem publication number CN101315026A discloses " a kind of underground coal gasification system and production technology thereof ".This system utilizes the method for slip casting that the passage that had burnt is carried out landfill, cutting off gasifying agent continues to the passage air feed that had burnt, but, gas injection point after this system can't automatically be open at when starting grouting operation, gas injection point after must being open at by manual control brings very large inconvenience to the staff.
Summary of the invention
The technical problem to be solved in the present invention provides injection point backing formula gas injection device in a kind of underground gasification system.Gas injection point after can automatically being open at when starting grouting operation, the gas injection point after need not being open at by manual control brings great convenience to the staff.
In order to solve the problems of the technologies described above, injection point backing formula gas injection device in a kind of underground gasification provided by the invention system comprises the gasifying agent carrier pipe; Described gasifying agent carrier pipe is divided into multistage; The described gasifying agent carrier pipe of each section is equipped with respectively sleeve; On the described gasifying agent carrier pipe of each section, grouting port and gas injection port are set respectively; Be provided with unidirectional stop valve in the described gasifying agent carrier pipe of each section, described unidirectional stop valve is channel setting according to the direction that flows along gasifying agent; Described grouting port is arranged on the outlet side of described unidirectional stop valve, described gas injection port is arranged on the inlet side of described unidirectional stop valve, described quill is to sealing at gas injection port side one end and gasifying agent carrier pipe, and quill is to being provided with the gasifying agent opening at grouting port side one end; The grouting pipe that is connected with grouting port passes with the slip casting controller from sleeve and is communicated with, being provided with one in sleeve in the described grouting pipe can be stifled by the one-way plug one that injection slurry is gone out, pull rope of the stifled connection of one-way plug one, pull rope is drawn from the guide hole of grouting pipe sidewall setting; Described gas injection port disposes opening device; Described opening device comprises seal cover, and described seal cover is pressed on the gas injection port by means of supporting masthead; Described pull rope of drawing from grouting pipe sidewall guide hole is connected on the support bar, the pulling support bar, and seal cover comes off, and gas injection port is communicated with sleeve, and described opening device is provided with seal cover opening signal transfer device.
Described support bar is the axial elasticity support bar.
One end of described axial elasticity support bar is cone or is horizontal tri-prismoid or is hemisphere or is horizontal semicylinder; The other end of described axial elasticity support bar is cone or is horizontal tri-prismoid or is hemisphere or is horizontal semicylinder; Correspondingly, described seal cover end face middle part is provided with a end with described axial elasticity support bar and is accordingly the cone recess or is horizontal tri-prismoid recess or is the hemisphere recess or is horizontal semicylinder recess; The face that the inside wall of described sleeve and described seal cover end face middle part faces is provided with the other end with described axial elasticity support bar and is accordingly the cone recess or is horizontal tri-prismoid recess or is the hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar places the described recess at described seal cover end face middle part, the described recess on the face that faces in the middle part of the inside wall that the other end of described axial elasticity support bar places described sleeve and the described seal cover end face.
One end of described axial elasticity support bar is cone or is horizontal tri-prismoid or is hemisphere or is horizontal semicylinder; The other end of described axial elasticity support bar is hinged with the face that the inside wall that is positioned at described sleeve and described seal cover end face middle part face; Described seal cover end face middle part is provided with a end with described axial elasticity support bar and is accordingly the cone recess or is horizontal tri-prismoid recess or is the hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar places the described recess at described seal cover end face middle part; Perhaps, the other end of described axial elasticity support bar and described seal cover end face middle part is hinged; The face that the inside wall of described sleeve and described seal cover end face middle part faces is provided with a end with described axial elasticity support bar and is accordingly the cone recess or is horizontal tri-prismoid recess or is the hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar places the described recess on the face that the inside wall of described sleeve and described seal cover end face middle part face.
Described opening device is provided with safeties; Described safeties comprise the insurance rope; The intensity of described insurance rope is less than described drag rope intensity; One end of described insurance rope is connected with described support bar; The other end of described insurance rope is connected with the rear end of described sleeve; Described insurance rope and described drag rope are located on the same line.
Described seal cover opening signal transfer device comprises the contact switch that is arranged between described gas injection port and the seal cover, and two contacts of described contact switch are electrically connected by the switching variable in the instrument on holding wire and the ground respectively; Perhaps, described seal cover opening signal transfer device is used described insurance rope, and described insurance rope is copper wire, and the two ends of described copper wire are electrically connected by the switching variable in the instrument on holding wire and the ground respectively.
Described drag rope is wire rope; The sidewall of described support bar is provided with the first open-work; Described the first open-work is provided with the first adjusting screw(rod) that passes this first open-work; The two ends of described the first adjusting screw(rod) are furnished with respectively adjusting nut; Perhaps, the rear end of described the first adjusting screw(rod) is furnished with adjusting nut; The front end of described the first adjusting screw(rod) is connected with the rear end of described wire rope; The rear end of described the first adjusting screw(rod) is connected with the front end of described copper wire; The rear end face of described sleeve is provided with the second open-work; Described the second open-work is provided with the second adjusting screw(rod) that passes this second open-work; The two ends of described the second adjusting screw(rod) are furnished with respectively adjusting nut; Perhaps, the rear end of described the second adjusting screw(rod) is furnished with adjusting nut; The front end of described the second adjusting screw(rod) is connected with the rear end of described copper wire.
Described gas injection port is provided with flange; Described seal cover is the blank flange that matches with described flange; Be provided with sealing mat between described flange and the blank flange; Described flange and blank flange are provided with two pairs of locating holes accordingly, and described flange and blank flange are located in succession by described locating hole by alignment pin or dismountable positioning bolt.
Described guide hole extends the formation conduit towards the direction at described support bar place and towards the direction at support bar place; Described conduit is offset to the top of grouting pipe; Described one-way plug one is blocked up between the bottom of described guide hole and grouting pipe; The inside wall of described grouting pipe is cylinder; Correspondingly, the stifled lateral wall of described one-way plug one also is the cylinder that the inside wall with described grouting pipe matches; Between blocking up, described guide hole and described one-way plug one be provided with spacing ring in the described grouting pipe; Perhaps, the inside wall of described grouting pipe is cone to the butt conical surface on described grouting pipe top; Correspondingly, the stifled lateral wall of described one-way plug one also is the butt conical surface that the inside wall with described grouting pipe matches.
The stifled lateral wall of described one-way plug one is provided with annular groove; Be provided with annular rubber ring in the described annular groove.
The present invention compared with prior art has following beneficial effect.
1, the technical program is owing to adopted gas injection port to dispose opening device, opening device comprises that lid puts at the seal cover on the gas injection port, is pressed in support bar on the seal cover by means of sleeve top, be arranged on and be used for stoping gasifying agent stifled from the one-way plug one that grouting pipe flows to grouting pipeline in the described grouting pipe, pass guide hole and connect the technological means of the drag rope of the stifled and support bar of one-way plug one, so, gas injection point after when starting grouting operation, can automatically being open at, gas injection point after need not being open at by manual control brings great convenience to the staff.Again owing to adopted each section gasifying agent carrier pipe to be equipped with respectively sleeve; be provided with the technological means of gasifying agent opening on the sleeve; so; not only can play the fixing effect of supporting to opening device; but also can play to the gasifying agent carrier pipe effect of protection; drop and smash gasifying agent opening device and safeties in the coal seam that prevents the tunnel end face; more can play the guiding role to the mobile of gasifying agent; can play heat insulation effect to the gasifying agent carrier pipe again; make the interior temperature of gasifying agent carrier pipe basically near normal temperature; the slip casting that can prevent from injecting in the gasifying agent carrier pipe produces cracking; can prevent effectively that gasifying agent from flowing to the zone of having gasified in the front by the crack of one way valve and slip casting, effectively avoid the danger of coal gas with the blast of gasifying agent phase mixed occurrence.Also owing to adopted each unidirectional stop valve to be separately positioned in each section gasifying agent carrier pipe, and be the technological means of channel setting according to the direction that flows along gasifying agent, so, can prevent effectively that slip casting from flow stopping up the path that gasifying agent flows to gas injection port backward.Again owing to adopted opening device to be provided with the technological means of seal cover opening signal transfer device, so, be conducive to ground staff by the duty of the delivery confirmation gas injection point of seal cover opening signal.
2, the technical program is because to have adopted support bar be the technological means of axial elasticity support bar, so, be conducive to improve the sealing performance of seal cover, also be conducive to the installation of axial elasticity support bar.
3, the technical program is owing to having adopted an end of axial elasticity support bar to be cone or to be hemispheroidal technological means, so install more convenient.When an end that has adopted the axial elasticity support bar was horizontal tri-prismoid or be horizontal semicylinder, then the installation of axial elasticity support bar stability was better.
4, the technical program is because the face that faces in the middle part of the inside wall of the other end that has adopted the axial elasticity support bar and described sleeve and the described seal cover end face is hinged, one end of axial elasticity support bar places the technological means of the supermedial described recess of described seal cover end face, so, it is easier not only to install, and the installation of axial elasticity support bar stability is better.
5, the technical program is owing to adopted safeties to comprise the insurance rope, the intensity of insurance rope is less than drag rope intensity, one end of insurance rope is connected with described support bar, the other end of insurance rope is connected with the rear end of sleeve, the technological means that insurance rope and drag rope are located on the same line, so the balance one-way plug one is stifled by the active force of drag rope to support bar effectively, prevents the unexpected slippage of support bar.
6, the technical program is owing to adopted seal cover opening signal transfer device to comprise the contact switch that is arranged between gas injection port and the seal cover, the technological means that two contacts of contact switch are electrically connected by the switching variable in the instrument on holding wire and the ground respectively, so, seal cover opening signal transfer device simple in structure, easy to manufacture, good reliability.Use the insurance rope when adopting seal cover opening signal transfer device, the insurance rope is copper wire, the technological means that the two ends of copper wire are electrically connected by the switching variable in the instrument on holding wire and the ground respectively, then the structure of seal cover opening signal transfer device is simpler, it is easier to make, low cost of manufacture.
7, the technical program is wire rope owing to having adopted drag rope, the sidewall of support bar is provided with the first open-work, the first open-work is provided with the first adjusting screw(rod) that passes this first open-work, the two ends of the first adjusting screw(rod) are furnished with respectively adjusting nut, perhaps, the rear end of the first adjusting screw(rod) is furnished with adjusting nut, the front end of the first adjusting screw(rod) is connected with the rear end of wire rope, the rear end of the first adjusting screw(rod) is connected with the front end of copper wire, the rear end face of sleeve is provided with the second open-work, the second open-work is provided with the second adjusting screw(rod) that passes this second open-work, and the two ends of the second adjusting screw(rod) are furnished with respectively adjusting nut; Perhaps, the rear end of the second adjusting screw(rod) is furnished with adjusting nut, the technological means that the front end of the second adjusting screw(rod) is connected with the rear end of copper wire, so, not only can be so that adjusting be installed, but also more effectively the balance one-way plug one is stifled by the active force of drag rope to support bar, and can prevent from triggering opening device in the transportation installation process.
8, the technical program has been owing to adopted gas injection port to be provided with flange, and the blank flange of seal cover for matching with flange is provided with the technological means of sealing mat between flange and the blank flange, so, can further improve the sealing performance of gas injection port.Again owing to adopted flange and blank flange to be provided with accordingly two pairs of locating holes, the technological means that flange and blank flange are located by connecting by locating hole by alignment pin or dismountable positioning bolt, so, can install or the process of transportation in the middle of prevent from producing relative dislocation between flange and the blank flange.When using dismountable positioning bolt to be located by connecting, before system works, dismountable positioning bolt is removed.
9, the technical program has been owing to adopted guide hole to extend the technological means that consists of conduit towards the direction at support bar place and towards the direction at support bar place, so, be conducive to the sealing between drag rope and the conduit, prevent that slip casting from overflowing from conduit.Again owing to adopted conduit to be offset to the technological means on grouting pipe top, so it is stifled that one-way plug one can be installed easily.Also owing to adopted the inside wall of grouting pipe to be cylinder, the stifled lateral wall of one-way plug one also is the technological means of the cylinder that the inside wall with grouting pipe matches, so, be conducive to manufacture.Again owing to adopted the technological means that between guide hole and one-way plug one are blocked up, is provided with spacing ring in the grouting pipe, so, excessive because of gasifying agent pressure in the time of can stoping before use a gas injection point, piston is blown to the top of grouting pipe, avoid gasifying agent to flow to grouting pipeline by grouting pipe.When the inside wall that has adopted grouting pipe is cone to the butt conical surface on described grouting pipe top, the stifled lateral wall of one-way plug one also is the technological means of the butt conical surface that the inside wall with described grouting pipe matches, and then more is conducive to avoid gasifying agent to flow to grouting pipeline by grouting pipe.
10, the technical program is provided with the technological means of annular rubber ring owing to adopted the stifled lateral wall of one-way plug one to be provided with annular groove in the annular groove, so, can avoid the piston directly to contact with Grouting Pipe, thereby avoid getting rusty and cause piston to move.
Description of drawings
Fig. 1 is the overall structure schematic diagram of underground gasification of the present invention system.
Fig. 2 is the structure enlarged diagram of a gasification unit among Fig. 1.
Fig. 3 is the left TV structure enlarged diagram of Fig. 2.
Fig. 4 is the left TV structure enlarged diagram of A-A line section among Fig. 2.
Fig. 5 is the structure enlarged diagram of gas injection port opening device the first embodiment among Fig. 2.
Fig. 6 is the structure enlarged diagram of gas injection port opening device the second embodiment among Fig. 2.
Fig. 7 is the structure enlarged diagram of the third embodiment of gas injection port opening device among Fig. 2.
Fig. 8 is the structure enlarged diagram of the 4th kind of embodiment of gas injection port opening device among Fig. 2.
Fig. 9 is the structure enlarged diagram of the first embodiment of grouting pipe among Fig. 2.
Figure 10 is the structure enlarged diagram of the second embodiment of grouting pipe among Fig. 2.
Figure 11 be among Fig. 8 B to partial enlarged drawing.
The specific embodiment
Extremely shown in Figure 10 such as Fig. 1, the invention provides a kind of underground gasification system injection point backing formula gas injection device that places the tunnel, comprise gasifying agent carrier pipe 1, described gasifying agent carrier pipe 1 is divided into multistage, as can be seen from Figure 1, preferably, two adjacent described gasifying agent carrier pipes 1 are communicated with by connecting pipe 11.The described gasifying agent carrier pipe 1 of each section is equipped with respectively sleeve 9; Preferably, described sleeve 9 is cylindrical shell, and as can be seen from Figure 2, the axis of the axis of sleeve 9 and gasifying agent carrier pipe 1 is parallel to each other.Certainly, sleeve 9 can also be the convex housing of other end face, such as spherical shell, first spherical shell, first cylindrical shell etc.Like this, can directly be slipped to the bottom surface, tunnel when the tunnel top seam drops on the sleeve 9, can effectively avoid on the sleeve 9 piling up the coal seam and sleeve 9 is damaged by pressure.Be provided with a plurality of gasifying agent openings 91 on the described sleeve 9, from Fig. 2 and Fig. 3, can find out, preferably, described a plurality of gasifying agent openings 91 are arranged on the front end face (being the left side of Fig. 2 middle sleeve 9) of sleeve 9, and described a plurality of gasifying agent openings 91 are sieve-mesh and distribute.Certainly, gasifying agent opening 91 also can be a large gasifying agent opening hole, and gasifying agent opening 91 also can be arranged on any position of sleeve 9 housings.On the described gasifying agent carrier pipe 1 of each section, be positioned at described sleeve 9 and be respectively arranged with unidirectional stop valve 2, grouting port and gas injection port 4; Each described unidirectional stop valve 2 is separately positioned in the described gasifying agent carrier pipe 1 of each section, and is channel setting according to the direction that flows along gasifying agent; Each described grouting port is separately positioned on the tube wall of the described gasifying agent carrier pipe 1 of each section, is arranged in the outlet side (being the left side of Fig. 2 unidirectional stop valve 2) of described unidirectional stop valve 2; Described grouting port is communicated with grouting pipe 3; Described grouting pipe 3 is communicated with slip casting controller (not drawing among the figure) by the grouting pipeline 8 that penetrates in the sleeve 9; The sidewall of described grouting pipe 3 is provided with guide hole; Each described gas injection port 4 respectively corresponding described grouting port 3(is that gas injection port 4 and grouting port 3 are positioned on the same bus of gasifying agent carrier pipe 1 substantially) be arranged on the tube wall of the described gasifying agent carrier pipe 1 of each section, be arranged in the inlet side (being the right side of Fig. 2 unidirectional stop valve 2) of described unidirectional stop valve 2; Described gas injection port 4 disposes opening device 6; Described opening device 6 comprises that lid puts seal cover 61 on described gas injection port 4, is pressed in support bar 62 on the seal cover 61 by means of sleeve 9 tops; Be arranged on and be used for stoping gasifying agent to flow to the one-way plug one stifled 63 of grouting pipeline 8 from grouting pipe 3 in the described grouting pipe 3; Pass described guide hole and connect the drag rope 64 of one-way plug one stifled 63 and support bar 62.From Fig. 2 and Fig. 4, can find out, grouting pipe 3 is substantially parallel with support bar 62, clash for fear of grouting pipeline 8 and support bar 62, grouting pipeline 8 is avoided the top, top that support bar 62 penetrates into grouting pipe 3 from the rear end face of sleeve 9 and is communicated with the top port of grouting pipe 3 after twice orthogonal right angle bending.Described opening device 6 is provided with seal cover opening signal transfer device 66(referring to Fig. 8).
For clarity sake, now some predicates are described as follows.
The import of gasifying agent carrier pipe: i.e. right side arrow place among Fig. 1.
The outlet of gasifying agent carrier pipe: arrow place on the left of namely among Fig. 1.
Initial gas injection is selected: in the tunnel zone of contiguous gasifying agent carrier pipe outlet.
The first sleeve: be nested with first sleeve on (namely from left to right first paragraph) gasifying agent carrier pipe 1.
The first gas injection point: in the tunnel zone in a plurality of holes on contiguous the first sleeve.
The first gas injection port: the gas injection port on (namely from left to right first paragraph) the gasifying agent carrier pipe 1 that is positioned at first.
The first grouting pipe: the grouting pipe on (namely from left to right first paragraph) the gasifying agent carrier pipe 1 that is positioned at first.
The second grouting pipe: the grouting pipe on (namely from left to right second segment) the gasifying agent carrier pipe 1 that is positioned at second.The rest may be inferred.
The operating principle of this system is: when beginning to gasify, all gas injection port opening devices all are in closed condition, gasifying agent flows to the coal seam of the tunnel end successively by the outlet of the import of gasifying agent carrier pipe, unidirectional stop valve in the gasifying agent carrier pipe and gasifying agent carrier pipe, the initial gas injection point of the tunnel end is carried out gasification process.After initial gas injection point gasification is complete, slurries flow to initial gas injection point by the outlet of slip casting controller, grouting pipeline, the first grouting pipe and gasifying agent carrier pipe successively, to initial gas injection point slip casting, can prevent that like this gasifying agent from continuing to flow to initial gas injection point and causing that gas quality degenerates even sets off an explosion.Meanwhile, the pressure of slurries and gravity cause the first one-way plug one in the first grouting pipe stifled to the first gasifying agent conveying in-pipe in the first grouting pipe.The first support bar that the stifled pulling of the first one-way plug one the first drag rope drives in the first opening device moves, make the first support bar lose top pressure effect to the first seal cover, be unlocked under the pressure-acting of the first seal cover in the first gasifying agent carrier pipe, open the first gas injection port.Gasifying agent flows to the first gas injection point by a plurality of gasifying agent openings on the first gas injection port, the first sleeve, and the first gas injection point in the tunnel is carried out gasification process.After the gasification of the first gas injection point is complete, slurries flow to the first gas injection point by a plurality of gasifying agent openings on slip casting controller, grouting pipeline, the second grouting pipe, the second gasifying agent carrier pipe, connecting pipe, the first gasifying agent carrier pipe, the first gas injection port and the first sleeve successively, to the first gas injection point slip casting, can prevent that like this gasifying agent from continuing to flow to the first gas injection point and the danger that sets off an explosion.The process of back is similar to noted earlier.
Present embodiment is owing to adopted gas injection port to dispose opening device, opening device comprises that lid puts at the seal cover on the gas injection port, is pressed in support bar on the seal cover by means of sleeve top, be arranged on and be used for stoping gasifying agent stifled from the one-way plug one that grouting pipe flows to grouting pipeline in the described grouting pipe, pass guide hole and connect the technological means of the drag rope of the stifled and support bar of one-way plug one, so, gas injection point after when starting grouting operation, can automatically being open at, gas injection point after need not being open at by manual control brings great convenience to the staff.Again owing to adopted each section gasifying agent carrier pipe to be equipped with respectively sleeve; be provided with the technological means of a plurality of gasifying agent openings on the sleeve; so; not only can play the fixing effect of supporting to opening device; but also can play to the gasifying agent carrier pipe effect of protection; drop and smash gas injection point opening device and safeties in the coal seam that prevents the tunnel end face; more can play the guiding role to the mobile of gasifying agent; can play heat insulation effect to the gasifying agent carrier pipe again; make the interior temperature of gasifying agent carrier pipe basically near normal temperature; the slip casting that can prevent from injecting in the gasifying agent carrier pipe produces cracking; can prevent effectively that gasifying agent from flowing to the zone of having gasified in the front by the crack of one way valve and slip casting, effectively avoid coal gas to mix mutually the danger that reduces gas quality and blast with gasifying agent.Also owing to adopted each unidirectional stop valve to be separately positioned in each section gasifying agent carrier pipe, and be the technological means of channel setting according to the direction that flows along gasifying agent, so, can prevent effectively that slip casting from flow stopping up the path that gasifying agent flows to gas injection port backward.Again owing to adopted opening device to be provided with the technological means of seal cover opening signal transfer device, so, be conducive to ground staff by the duty of the delivery confirmation gas injection point of seal cover opening signal.
As a kind of improvement of present embodiment, as shown in Figure 5, described support bar 62 is axial elasticity support bar 62.Described axial elasticity support bar 62 comprises sleeve pipe 623 and is positioned at the spring 624 of sleeve pipe 623.The two-port of sleeve pipe 623 is inserted with respectively quiet support bar 621 and moving support bar 622.One end of described quiet support bar 621 is fixedly connected with by screw thread with a port of described sleeve pipe 623 or is bonding.
Present embodiment is because to have adopted support bar be the technological means of axial elasticity support bar, so, be conducive to improve the sealing performance of seal cover, also be conducive to the installation of axial elasticity support bar.Certainly, support bar also can adopt rigid supporting rod.Obviously, the axial elasticity support bar is better than rigid supporting rod.
Further improve as present embodiment, as shown in Figure 5 and Figure 6, one end of described axial elasticity support bar 62 is cone (referring to Fig. 5, certainly, one end of described axial elasticity support bar 62 also can be horizontal tri-prismoid, referring to Fig. 6, or is hemisphere or is horizontal semicylinder, the top rib of described horizontal tri-prismoid is perpendicular to the lead of described drag rope 64, and the bus of described horizontal semicylinder is perpendicular to the lead of described drag rope 64); The other end of described axial elasticity support bar 62 is hemisphere (referring to Fig. 5, certainly, the other end of described axial elasticity support bar 62 also can be horizontal tri-prismoid or be cone or be horizontal semicylinder, referring to Fig. 6, the top rib of described horizontal tri-prismoid is perpendicular to the lead of described drag rope 64, and the bus of described horizontal semicylinder is perpendicular to the lead of described drag rope 64); Correspondingly, the end that described seal cover 61 end faces middle part is provided with described axial elasticity support bar 62 is the cone recess accordingly (referring to Fig. 5, certainly, the end that described seal cover 61 end faces middle part also can be provided with described axial elasticity support bar 62 is horizontal tri-prismoid recess accordingly, referring to Fig. 6, or be the hemisphere recess or be horizontal semicylinder recess, the basal edge of described horizontal tri-prismoid recess is perpendicular to the lead of described drag rope 64, and the bus of described horizontal semicylinder recess is perpendicular to the lead of described drag rope 64); The other end that the face that the inside wall of described sleeve 9 and described seal cover 31 end faces middle part faces is provided with described axial elasticity support bar 62 is the hemisphere recess accordingly (referring to Fig. 5, certainly, the other end that the face that the inside wall of described sleeve 9 and described seal cover 31 end faces middle part faces also can be provided with described axial elasticity support bar 62 is horizontal tri-prismoid recess accordingly, referring to Fig. 6, or be the cone recess or be horizontal semicylinder recess, the basal edge of described horizontal tri-prismoid recess is perpendicular to the lead of described drag rope 64, and the bus of described horizontal semicylinder recess is perpendicular to the lead of described drag rope 64); What one end of described axial elasticity support bar 62 placed described seal cover 61 end faces middle part is cone recess (referring to Fig. 5 or Fig. 6), is hemisphere recess (referring to Fig. 5 or Fig. 6) on the face that faces in the middle part of the inside wall that the other end of described axial elasticity support bar 62 places described sleeve 9 and described seal cover 61 end faces.
Present embodiment is owing to adopted an end of axial elasticity support bar to be cone, and the other end is hemispheroidal technological means, so install more convenient.When an end that has adopted the axial elasticity support bar is horizontal tri-prismoid, when the other end was horizontal semicylinder, then the installation of axial elasticity support bar stability was better.
Further improve as present embodiment, as shown in Figure 7 and Figure 8, one end of described axial elasticity support bar 62 is cone (referring to Fig. 7, certainly, one end of described axial elasticity support bar 62 also can be horizontal tri-prismoid or be hemisphere or be horizontal semicylinder, the top rib of described horizontal tri-prismoid is perpendicular to the lead of described drag rope 64, and the bus of described horizontal semicylinder is perpendicular to the lead of described drag rope 64); The other end of described axial elasticity support bar 62 is hinged (referring to Fig. 7 with the face that the inside wall that is positioned at described sleeve 9 and described seal cover 61 end faces middle part face, certainly, the other end of described axial elasticity support bar 62 also can be hinged with described seal cover 61 end faces middle part, referring to Fig. 8); Correspondingly, the end that described seal cover 61 end faces middle part is provided with described axial elasticity support bar 62 is the cone recess accordingly (referring to Fig. 7, certainly, described seal cover 61 end faces middle part also can be provided with the tri-prismoid recess that is horizontal or be the hemisphere recess or be horizontal semicylinder recess, the basal edge of described horizontal tri-prismoid recess is perpendicular to the lead of described drag rope 64, and the bus of described horizontal semicylinder recess is perpendicular to the lead of described drag rope 64); One end of described axial elasticity support bar 62 places the described recess at described seal cover 61 end faces middle part (referring to Fig. 7, certainly, the end that the face that the inside wall of described sleeve 9 and described seal cover 61 end faces middle part faces also can be provided with described axial elasticity support bar 62 is the cone recess accordingly, referring to Fig. 8, or be horizontal tri-prismoid recess or be the hemisphere recess or be horizontal semicylinder recess, the basal edge of described horizontal tri-prismoid recess is perpendicular to the lead of described drag rope 64, and the bus of described horizontal semicylinder recess is perpendicular to the lead of described drag rope 64; One end of described axial elasticity support bar 62 places the described recess on the face that the inside wall of described sleeve 9 and described seal cover 61 end faces middle part face).
Present embodiment is owing to hinged in the middle part of the other end that has adopted the axial elasticity support bar and the described seal cover end face, one end of axial elasticity support bar places the technological means of the described recess on the face that the inside wall of described sleeve and described seal cover end face middle part face, so, it is easier not only to install, and the installation of axial elasticity support bar stability is better.
Further improve again as present embodiment, as shown in Figure 2, injection point backing formula gas injection device also comprises safeties 7 in the described underground gasification system; Described safeties comprise insurance rope 71; The intensity of described insurance rope 71 is less than described drag rope 64 intensity; The front end of described insurance rope 71 is connected with described support bar 62; The rear end of described insurance rope 71 is connected with the rear end of described sleeve 9; Described insurance rope 71 is located on the same line with described drag rope 64.
Present embodiment is owing to adopted safeties to comprise the insurance rope, the intensity of insurance rope is less than drag rope intensity, one end of insurance rope is connected with described support bar, the other end of insurance rope is connected with the rear end of sleeve, the technological means that insurance rope and drag rope are located on the same line, so the balance one-way plug one is stifled by the active force of drag rope to support bar effectively, prevents the unexpected slippage of support bar.
Also further improve as present embodiment, such as Fig. 8 and shown in Figure 11, described seal cover opening signal transfer device 66 comprises the contact switch that is arranged between described gas injection port 4 and the seal cover 61.As can be seen from Figure 11, the housing 661 of described contact switch embeds the end face of gas injection port 4 sidewalls, and the knob 664 of described contact switch exposes the end face of gas injection port 4 sidewalls under the effect of spring 665, and brace 663 and two contacts 662 disconnect, at this moment, contact switch is in off-state.When closing seal cover 61, seal cover 61 is pressed to knob 664 in the housing 661, and brace 663 is electrically connected with two contacts 662, makes contact switch be in on-state.Two contacts 662 of described contact switch are electrically connected by the switching variable in the instrument on holding wire (among the figure draw) and the ground (among the figure picture) respectively.Certainly, described seal cover opening signal transfer device 66 also will be to use described insurance rope 71, and described insurance rope 71 is copper wire, and the two ends of described copper wire are electrically connected by the switching variable in the instrument on holding wire and the ground respectively.
Present embodiment is owing to adopted seal cover opening signal transfer device to comprise the contact switch that is arranged between gas injection port and the seal cover, the technological means that two contacts of contact switch are electrically connected by the switching variable in the instrument on holding wire and the ground respectively, so, seal cover opening signal transfer device simple in structure, easy to manufacture, good reliability.Use the insurance rope when adopting seal cover opening signal transfer device, the insurance rope is copper wire, the technological means that the two ends of copper wire are electrically connected by the switching variable in the instrument on holding wire and the ground respectively, then the structure of seal cover opening signal transfer device is simpler, it is easier to make, low cost of manufacture.
Further improve as present embodiment, such as Fig. 2, Fig. 5, Fig. 6, Fig. 7 and shown in Figure 8, described drag rope 64 is wire rope 64; The sidewall of described support bar 62 is provided with the first open-work; Described the first open-work is provided with the first adjusting screw(rod) 65 that passes this first open-work; The two ends of described the first adjusting screw(rod) are furnished with respectively adjusting nut 651,652; Perhaps, the rear end of described the first adjusting screw(rod) 65 is furnished with adjusting nut 651; The front end of described the first adjusting screw(rod) 65 is connected with the rear end of described wire rope 64; The rear end of described the first adjusting screw(rod) 65 is connected with the front end of described copper wire 71; The rear end face of described sleeve 9 is provided with the second open-work; Described the second open-work is provided with the second adjusting screw(rod) 72 that passes this second open-work; The two ends of described the second adjusting screw(rod) are furnished with respectively adjusting nut 721,722; Perhaps, the rear end of described the second adjusting screw(rod) 72 is furnished with adjusting nut 721; The front end of described the second adjusting screw(rod) 72 is connected with the rear end of described copper wire 71.
Present embodiment is wire rope owing to having adopted drag rope, the insurance rope is copper wire, the sidewall of support bar is provided with the first open-work, the first open-work is provided with the first adjusting screw(rod) that passes this first open-work, the two ends of the first adjusting screw(rod) are furnished with respectively adjusting nut, perhaps, the rear end of the first adjusting screw(rod) is furnished with adjusting nut, the front end of the first adjusting screw(rod) is connected with the rear end of wire rope, the rear end of the first adjusting screw(rod) is connected with the front end of copper wire, the rear end face of sleeve is provided with the second open-work, and the second open-work is provided with the second adjusting screw(rod) that passes this second open-work, and the two ends of the second adjusting screw(rod) are furnished with respectively adjusting nut; Perhaps, the rear end of the second adjusting screw(rod) is furnished with adjusting nut, the technological means that the front end of the second adjusting screw(rod) is connected with the rear end of copper wire, so, not only can be so that install to regulate, but also more effectively the balance one-way plug one is stifled by the active force of drag rope to support bar.
Further improve as present embodiment, as shown in Figure 7 and Figure 8, described gas injection port 4 is provided with flange again; Described seal cover 61 is the blank flange that matches with described flange; Be provided with sealing mat (not drawing among the figure) between described flange and the blank flange; Described flange and blank flange are provided with two pairs of locating holes 611 accordingly, described flange and blank flange by alignment pin 612(referring to Fig. 7) or dismountable positioning bolt 613(referring to Fig. 8) by described locating hole 611 location in succession.
Present embodiment has been owing to adopted gas injection port to be provided with flange, and the blank flange of seal cover for matching with flange is provided with the technological means of sealing mat between flange and the blank flange, so, can further improve the sealing performance of gas injection port.Again owing to adopted flange and blank flange to be provided with accordingly two pairs of locating holes, the technological means that flange and blank flange are located by connecting by locating hole by alignment pin or dismountable positioning bolt, so, can install or the process of transportation in the middle of prevent from producing relative dislocation between flange and the blank flange.When using dismountable positioning bolt to be located by connecting, before system works, dismountable positioning bolt is removed.
Also further improve as present embodiment, as shown in Figure 9 and Figure 10, described guide hole extends formation conduit 5 towards the direction at described support bar 62 places and towards the direction at support bar 62 places; Described conduit 5 is offset to the top of grouting pipe 3; Described one-way plug one stifled 63 is between the bottom of described guide hole and grouting pipe 3; The inside wall of described grouting pipe 3 is cylinder; Correspondingly, the lateral wall of described one-way plug one stifled 63 also is the cylinder that the inside wall with described grouting pipe 3 matches; Between described guide hole and described one-way plug one stifled 63, be provided with spacing ring 632 in the described grouting pipe 3; Perhaps, the inside wall of described grouting pipe 3 is cone to the butt conical surface on described grouting pipe 3 tops; Correspondingly, the lateral wall of described one-way plug one stifled 63 also is the butt conical surface that the inside wall with described grouting pipe 3 matches.
Present embodiment has been owing to adopted guide hole to extend the technological means that consists of conduit towards the direction at support bar place and towards the direction at support bar place, so, be conducive to the sealing between drag rope and the conduit, prevent that slip casting from overflowing from conduit.Again owing to adopted conduit to be offset to the technological means on grouting pipe top, so it is stifled that one-way plug one can be installed easily.Also owing to adopted the inside wall of grouting pipe to be cylinder, the stifled lateral wall of one-way plug one also is the technological means of the cylinder that the inside wall with grouting pipe matches, so, be conducive to manufacture.Again owing to adopted the technological means that between guide hole and one-way plug one are blocked up, is provided with spacing ring in the grouting pipe, so, excessive because of gasifying agent pressure in the time of can stoping before use a gas injection point, piston is blown to the top of grouting pipe, avoid gasifying agent to flow to grouting pipeline by grouting pipe.When the inside wall that has adopted grouting pipe is cone to the butt conical surface on described grouting pipe top, the stifled lateral wall of one-way plug one also is the technological means of the butt conical surface that the inside wall with described grouting pipe matches, and then more is conducive to avoid gasifying agent to flow to grouting pipeline by grouting pipe.
Further improve as present embodiment, as shown in Figure 9 and Figure 10, the lateral wall of described one-way plug one stifled 63 is provided with annular groove; Be provided with annular rubber ring 631 in the described annular groove.
Present embodiment is provided with the technological means of annular rubber ring owing to adopted the stifled lateral wall of one-way plug one to be provided with annular groove in the annular groove, so, can avoid the piston directly to contact with Grouting Pipe, thereby avoid getting rusty and cause piston to move.
Claims (10)
1. injection point backing formula gas injection device in the underground gasification system comprises the gasifying agent carrier pipe; Described gasifying agent carrier pipe is divided into multistage; It is characterized in that: the described gasifying agent carrier pipe of each section is equipped with respectively sleeve; On the described gasifying agent carrier pipe of each section, grouting port and gas injection port are set respectively; Be provided with unidirectional stop valve in the described gasifying agent carrier pipe of each section, described unidirectional stop valve is channel setting according to the direction that flows along gasifying agent; Described grouting port is arranged on the outlet side of described unidirectional stop valve, described gas injection port is arranged on the inlet side of described unidirectional stop valve, described quill is to sealing at gas injection port side one end and gasifying agent carrier pipe, and quill is to being provided with the gasifying agent opening at grouting port side one end; The grouting pipe that is connected with grouting port passes with the slip casting controller from sleeve and is communicated with, being provided with one in sleeve in the described grouting pipe can be stifled by the one-way plug one that injection slurry is gone out, pull rope of the stifled connection of one-way plug one, pull rope is drawn from the guide hole of grouting pipe sidewall setting; Described gas injection port disposes opening device; Described opening device comprises seal cover, and described seal cover is pressed on the gas injection port by means of supporting masthead; Described pull rope of drawing from grouting pipe sidewall guide hole is connected on the support bar, the pulling support bar, and seal cover comes off, and gas injection port is communicated with sleeve, and described opening device is provided with seal cover opening signal transfer device.
2. injection point backing formula gas injection device in the underground gasification according to claim 1 system, it is characterized in that: described support bar is the axial elasticity support bar.
3. injection point backing formula gas injection device in the underground gasification according to claim 2 system is characterized in that: an end of described axial elasticity support bar is cone or is horizontal tri-prismoid or is hemisphere or is horizontal semicylinder; The other end of described axial elasticity support bar is cone or is horizontal tri-prismoid or is hemisphere or is horizontal semicylinder; Correspondingly, described seal cover end face middle part is provided with a end with described axial elasticity support bar and is accordingly the cone recess or is horizontal tri-prismoid recess or is the hemisphere recess or is horizontal semicylinder recess; The face that the inside wall of described sleeve and described seal cover end face middle part faces is provided with the other end with described axial elasticity support bar and is accordingly the cone recess or is horizontal tri-prismoid recess or is the hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar places the described recess at described seal cover end face middle part, the described recess on the face that faces in the middle part of the inside wall that the other end of described axial elasticity support bar places described sleeve and the described seal cover end face.
4. injection point backing formula gas injection device in the underground gasification according to claim 2 system is characterized in that: an end of described axial elasticity support bar is cone or is horizontal tri-prismoid or is hemisphere or is horizontal semicylinder; The other end of described axial elasticity support bar is hinged with the face that the inside wall that is positioned at described sleeve and described seal cover end face middle part face; Described seal cover end face middle part is provided with a end with described axial elasticity support bar and is accordingly the cone recess or is horizontal tri-prismoid recess or is the hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar places the described recess at described seal cover end face middle part; Perhaps, the other end of described axial elasticity support bar and described seal cover end face middle part is hinged; The face that the inside wall of described sleeve and described seal cover end face middle part faces is provided with a end with described axial elasticity support bar and is accordingly the cone recess or is horizontal tri-prismoid recess or is the hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar places the described recess on the face that the inside wall of described sleeve and described seal cover end face middle part face.
5. injection point backing formula gas injection device in the underground gasification according to claim 1 system, it is characterized in that: described opening device is provided with safeties; Described safeties comprise the insurance rope; The intensity of described insurance rope is less than described drag rope intensity; One end of described insurance rope is connected with described support bar; The other end of described insurance rope is connected with the rear end of described sleeve; Described insurance rope and described drag rope are located on the same line.
6. injection point backing formula gas injection device in the underground gasification according to claim 5 system, it is characterized in that: described seal cover opening signal transfer device comprises the contact switch that is arranged between described gas injection port and the seal cover, and two contacts of described contact switch are electrically connected by the switching variable in the instrument on holding wire and the ground respectively; Perhaps, described seal cover opening signal transfer device is used described insurance rope, and described insurance rope is copper wire, and the two ends of described copper wire are electrically connected by the switching variable in the instrument on holding wire and the ground respectively.
7. injection point backing formula gas injection device in the underground gasification according to claim 6 system, it is characterized in that: described drag rope is wire rope; The sidewall of described support bar is provided with the first open-work; Described the first open-work is provided with the first adjusting screw(rod) that passes this first open-work; The two ends of described the first adjusting screw(rod) are furnished with respectively adjusting nut; Perhaps, the rear end of described the first adjusting screw(rod) is furnished with adjusting nut; The front end of described the first adjusting screw(rod) is connected with the rear end of described wire rope; The rear end of described the first adjusting screw(rod) is connected with the front end of described copper wire; The rear end face of described sleeve is provided with the second open-work; Described the second open-work is provided with the second adjusting screw(rod) that passes this second open-work; The two ends of described the second adjusting screw(rod) are furnished with respectively adjusting nut; Perhaps, the rear end of described the second adjusting screw(rod) is furnished with adjusting nut; The front end of described the second adjusting screw(rod) is connected with the rear end of described copper wire.
8. injection point backing formula gas injection device in the underground gasification according to claim 1 system, it is characterized in that: described gas injection port is provided with flange; Described seal cover is the blank flange that matches with described flange; Be provided with sealing mat between described flange and the blank flange; Described flange and blank flange are provided with two pairs of locating holes accordingly, and described flange and blank flange are located in succession by described locating hole by alignment pin or dismountable positioning bolt.
9. injection point backing formula gas injection device in the underground gasification according to claim 1 system is characterized in that: described guide hole extends towards the direction at described support bar place and towards the direction at support bar place and consists of conduit; Described conduit is offset to the top of grouting pipe; Described one-way plug one is blocked up between the bottom of described guide hole and grouting pipe; The inside wall of described grouting pipe is cylinder; Correspondingly, the stifled lateral wall of described one-way plug one also is the cylinder that the inside wall with described grouting pipe matches; Between blocking up, described guide hole and described one-way plug one be provided with spacing ring in the described grouting pipe; Perhaps, the inside wall of described grouting pipe is the butt conical surface towards described grouting pipe top; Correspondingly, the stifled lateral wall of described one-way plug one also is the butt conical surface that the inside wall with described grouting pipe matches.
10. injection point backing formula gas injection device in the underground gasification according to claim 9 system, it is characterized in that: the stifled lateral wall of described one-way plug one is provided with annular groove; Be provided with annular rubber ring in the described annular groove.
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| CN201310327035.1A CN103352685B (en) | 2013-07-31 | 2013-07-31 | Gas injection point retreating type gas injection device in underground gasification system |
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| CN201310327035.1A CN103352685B (en) | 2013-07-31 | 2013-07-31 | Gas injection point retreating type gas injection device in underground gasification system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541714A (en) * | 2013-10-30 | 2014-01-29 | 新奥气化采煤有限公司 | Spray nozzle and underground coal gasification method |
| CN106089178A (en) * | 2016-08-18 | 2016-11-09 | 中国矿业大学(北京) | A kind of gas injection point mobile controller and control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3933447A (en) * | 1974-11-08 | 1976-01-20 | The United States Of America As Represented By The United States Energy Research And Development Administration | Underground gasification of coal |
| US4087130A (en) * | 1975-11-03 | 1978-05-02 | Occidental Petroleum Corporation | Process for the gasification of coal in situ |
| US4334579A (en) * | 1980-08-29 | 1982-06-15 | The United States Of America As Represented By The United States Department Of Energy | Method for gasification of deep, thin coal seams |
| CN2844436Y (en) * | 2005-12-12 | 2006-12-06 | 中国矿业大学(北京) | Electric-melting and panel turnover gas-injecting point controller |
| CN1982647A (en) * | 2005-12-12 | 2007-06-20 | 中国矿业大学(北京) | Underground coal gasifier with air-lift point separating control and its process |
| CN101315026A (en) * | 2008-07-01 | 2008-12-03 | 李文军 | Underground coal gasification system and producing process |
| CN203488162U (en) * | 2013-08-05 | 2014-03-19 | 华北科技学院 | Gas injection device in underground gasification system |
-
2013
- 2013-07-31 CN CN201310327035.1A patent/CN103352685B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3933447A (en) * | 1974-11-08 | 1976-01-20 | The United States Of America As Represented By The United States Energy Research And Development Administration | Underground gasification of coal |
| US4087130A (en) * | 1975-11-03 | 1978-05-02 | Occidental Petroleum Corporation | Process for the gasification of coal in situ |
| US4334579A (en) * | 1980-08-29 | 1982-06-15 | The United States Of America As Represented By The United States Department Of Energy | Method for gasification of deep, thin coal seams |
| CN2844436Y (en) * | 2005-12-12 | 2006-12-06 | 中国矿业大学(北京) | Electric-melting and panel turnover gas-injecting point controller |
| CN1982647A (en) * | 2005-12-12 | 2007-06-20 | 中国矿业大学(北京) | Underground coal gasifier with air-lift point separating control and its process |
| CN101315026A (en) * | 2008-07-01 | 2008-12-03 | 李文军 | Underground coal gasification system and producing process |
| CN203488162U (en) * | 2013-08-05 | 2014-03-19 | 华北科技学院 | Gas injection device in underground gasification system |
Non-Patent Citations (2)
| Title |
|---|
| 柳少波等: "煤炭地下气化技术及其应用前景", 《天然气工业》 * |
| 沈芳等: "中国煤炭地下气化的近期研究与发展", 《能源工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541714A (en) * | 2013-10-30 | 2014-01-29 | 新奥气化采煤有限公司 | Spray nozzle and underground coal gasification method |
| WO2015062204A1 (en) * | 2013-10-30 | 2015-05-07 | 新奥气化采煤有限公司 | Nozzle and underground coal gasification method |
| CN103541714B (en) * | 2013-10-30 | 2016-06-15 | 新奥气化采煤有限公司 | Shower nozzle and coal underground gasification method |
| CN106089178A (en) * | 2016-08-18 | 2016-11-09 | 中国矿业大学(北京) | A kind of gas injection point mobile controller and control method thereof |
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