CN203488162U - Gas injection device in underground gasification system - Google Patents
Gas injection device in underground gasification system Download PDFInfo
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- CN203488162U CN203488162U CN201320471718.XU CN201320471718U CN203488162U CN 203488162 U CN203488162 U CN 203488162U CN 201320471718 U CN201320471718 U CN 201320471718U CN 203488162 U CN203488162 U CN 203488162U
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- support bar
- gas injection
- recess
- sleeve
- seal cover
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Abstract
The utility model discloses a gas injection device in an underground gasification system. The gas injection device comprises gasifying agent conveyer pipes. Each gasifying agent conveyer pipe is sleeved with a sleeve which is provided with at least one hole. Each gasifying agent conveyer pipe, in the sleeve, is equipped with a unidirectional stop valve, a grouting port and a gas injection port. The grouting port extends outwardly to form a grouting pipeline. Guide holes are arranged in the sidewall of the grouting pipeline. The gas injection port is equipped with a starting device which includes a seal cover, a supporting bar, a unidirectional plug and a traction rope. The gas injection device in an underground gasification system enables gas injection points behind to be automatically opened while starting grouting operation, and needs no manual operation to open the gas injection points behind, thereby bringing much convenience for workers. Mortar injected into the gasifying agent conveyer pipes is prevented from cracking, and gasifying agents are effectively prevented from flowing areas that have been gasified before via the unidirectional valve and slits of mortar.
Description
Technical field
The utility model relates to underground coal gasification(UCG) production field, particularly gas injection device in a kind of underground gasification system.
Background technology
Owing to there being a large amount of manually cannot exploit or uneconomic coal resources of man-made recovery, people start 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 producing coal gas in mine ", its structure lacks the gas injection of air injection pipe in coal seam and controls, therefore exist coal combustion insufficient, the deficiency that coal utilization rate is low; The Chinese patent of publication number CN1112188A " gasifying method for coal seam " adopts the fusing method molten existing injection point backing of air injection pipe cause for gossip of opening piecemeal; 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 in production tunnel, coal seam, to put into many appendixs to realize injection point backing, and this kind of method complex process cost is high; Also has the Chinese patent " long-passage and large-section underground coal gasification in mine " of publication number CN 1169501A, the Chinese patent " multi-pour-gathering channel alternating moving bed longwall coal seam gasification method " of the Chinese patent " coal-bed gasifying method of gas-injection point backing while changing tube " of publication number CN 1121138A, publication number CN 1172842A etc., all the research that has shaft underground gasification technology to carry out to setting up, but above-mentioned patent is disclosed, be to be all 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 field trial of Coal Gasification many times both at home and abroad, but the time of operation is not long, not realizing normal underground coal gasification(UCG) produces, the technical problem underlying running into be cannot be stable control gasification, the one, gasifying agent wantonly flows in gasification tunnel, the all ribs in gasification tunnel both sides are all exposed in air, burning block on rib rapidly against the wind and on, cause shorten gas-making period, gasification of coal quantitative change is few, mobile air catalytic combustion in the part coal gas that gasification produces simultaneously and passage, makes to export gas quality and degenerates, and rate of gasification is low; The 2nd, do not have good way to fill combustion dead zone, cause surface subsidence, meanwhile, the mass air flow in gasification tunnel directly passes through from slump, and does not contact unburned coal seam, gasification tunnel both sides, and underground gasification process is worsened, and gasification efficiency is low.In order to address the above problem the Chinese patent of publication number CN101315026A, " a kind of underground coal gasification system and production technology thereof " disclosed.This system utilizes the method for slip casting to carry out landfill to the passage having burnt, cutting off gasifying agent continues to the passage air feed having burnt, but, gas injection point after this system cannot automatically be open at when starting grouting operation, gas injection point after must being open at by manual control, brings very large inconvenience to staff.
Utility model content
The technical problems to be solved in the utility model is to provide gas injection device in a kind of underground gasification system.Gas injection point after can being automatically open at when starting grouting operation, the gas injection point after need not being open at by manual control, brings great convenience to staff.
In order to solve the problems of the technologies described above, gas injection device in a kind of underground gasification system that the utility model provides, comprises gasifying agent carrier pipe; Described gasifying agent carrier pipe is divided into multistage; Each section of described gasifying agent carrier pipe is equipped with respectively sleeve; On each section of described gasifying agent carrier pipe, grouting port and gas injection port are set respectively; In each section of described gasifying agent carrier pipe, be provided with unidirectional stop valve, described unidirectional stop valve is according to being channel setting along the mobile direction of 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 in gas injection port side one end and gasifying agent carrier pipe, and quill is to being provided with gasifying agent opening in grouting port side one end; The grouting pipe being connected with grouting port passes with slip casting controller and is communicated with from sleeve, in sleeve, in described grouting pipe, be provided with the one-way plug one that can be gone out by injection slurry stifled, a 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 gas injection port by means of supporting masthead; Described pull rope of drawing from grouting pipe sidewall guide hole is connected to support bar, pulls support bar, and seal cover comes off, and gas injection port is communicated with sleeve; Described support bar is axial elasticity support bar; Described axial elasticity support bar comprises sleeve pipe and is positioned at the spring of sleeve pipe; The two-port of sleeve pipe is inserted with respectively quiet support bar and moving support bar; One end of described quiet support bar is fixedly connected with by screw thread with a port of described sleeve pipe or is bonding.
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, one end that described seal cover end face middle part is provided with described axial elasticity support bar is accordingly cone recess or is horizontal tri-prismoid recess or is hemisphere recess or is horizontal semicylinder recess; The other end that the face that the inside wall of described sleeve and described seal cover end face middle part faces is provided with described axial elasticity support bar is accordingly cone recess or is horizontal tri-prismoid recess or is hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar is placed in the described recess at described seal cover end face middle part, the described recess on the face facing in the middle part of the inside wall that the other end of described axial elasticity support bar is placed in described sleeve and 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 face facing in the middle part of the other end of described axial elasticity support bar and the inside wall that is positioned at described sleeve and described seal cover end face is hinged; One end that described seal cover end face middle part is provided with described axial elasticity support bar is accordingly cone recess or is horizontal tri-prismoid recess or is hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar is placed in the described recess at described seal cover end face middle part; Or the other end of described axial elasticity support bar and described seal cover end face middle part are hinged; One end that the face that the inside wall of described sleeve and described seal cover end face middle part faces is provided with described axial elasticity support bar is accordingly cone recess or is horizontal tri-prismoid recess or is hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar is placed in 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 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 opening device is provided with seal cover opening signal transfer device; Described seal cover opening signal transfer device comprises the contact switch being arranged between described gas injection port and seal cover, and two contacts of described contact switch are electrically connected to the switching variable in instrument on ground by holding wire respectively; Or described seal cover opening signal transfer device is used described insurance rope, described insurance rope is iron wire, and the two ends of described iron wire are electrically connected to the switching variable in instrument on ground by holding wire 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) through this first open-work; The two ends of described the first adjusting screw(rod) are furnished with respectively adjusting nut; Or 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 iron 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) through this second open-work; The two ends of described the second adjusting screw(rod) are furnished with respectively adjusting nut; Or 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 iron wire.
Described gas injection port is provided with flange; Described seal cover is the blank flange matching with described flange; Between described flange and blank flange, be provided with sealing mat; 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 is towards the direction at described support bar place and extend formation conduit 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 described guide hole and the bottom of grouting pipe; The inside wall of described grouting pipe is cylinder; Correspondingly, the stifled lateral wall of described one-way plug one is also 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 described grouting pipe; Or 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 is also 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; In described annular groove, be provided with annular rubber ring.
The utility model compared with prior art has following beneficial effect.
1, the technical program is owing to having adopted gas injection port to dispose opening device, opening device comprises that lid puts seal cover on gas injection port, by means of sleeve top, is pressed in the support bar on seal cover, be arranged in described grouting pipe stifled for the one-way plug one that stops gasifying agent to flow to grouting pipeline from grouting pipe, through 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 can being automatically open at when starting grouting operation, gas injection point after need not being open at by manual control, brings great convenience to staff.Again owing to having adopted each section of gasifying agent carrier pipe to be equipped with respectively sleeve, on sleeve, be provided with the technological means of gasifying agent opening, so, not only can play the fixing effect of supporting to opening device, but also can play to gasifying agent carrier pipe the effect of protection, drop and smash gasifying agent opening device and safeties in the coal seam that prevents tunnel end face, more can play the guiding role to the mobile of gasifying agent, can play heat insulation effect to gasifying agent carrier pipe again, make the temperature in gasifying agent carrier pipe substantially approach normal temperature, can prevent that the slip casting in injected gas agent carrier pipe from producing cracking, can effectively prevent that gasifying agent from flowing to the region of having gasified above by the crack of one way valve and slip casting, effectively avoided coal gas to mix mutually the danger of blasting with gasifying agent.Also owing to having adopted each unidirectional stop valve to be separately positioned in each section of gasifying agent carrier pipe, and according to the technological means that is channel setting along the mobile direction of gasifying agent, so, can effectively prevent that slip casting from flow stopping up the path that gasifying agent flows to gas injection port backward.Again owing to having 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.Owing to having adopted support bar, be more axial elasticity support bar; Axial elasticity support bar comprises sleeve pipe and is positioned at the spring of sleeve pipe; The two-port of sleeve pipe is inserted with respectively quiet support bar and moving support bar; One end of quiet support bar is fixedly connected with by screw thread with a port of sleeve pipe or bonding technological means, so it is simple in structure, easy to manufacture, and low cost of manufacture is conducive to improve the sealing performance of seal cover, is also conducive to the installation of axial elasticity support bar.
2, the technical program is owing to having adopted one end of axial elasticity support bar to be cone or to be hemispheroidal technological means, so install more convenient.When having adopted one end of axial elasticity support bar to be horizontal tri-prismoid or to be horizontal semicylinder, the installation stability of axial elasticity support bar is better.
3, the technical program is because the face that has adopted the other end of axial elasticity support bar and the inside wall of described sleeve and described seal cover end face middle part to face is hinged, one end of axial elasticity support bar is placed in 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 stability of axial elasticity support bar is better.
4, the technical program is owing to having adopted safeties to comprise 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 insurance other end of rope and the rear end of sleeve are connected, the technological means that insurance rope and drag rope are located on the same line, so balance one-way plug one is blocked up by drag rope the active force to support bar effectively, prevents the unexpected slippage of support bar.
5, the technical program is owing to having adopted seal cover opening signal transfer device to comprise the contact switch being arranged between gas injection port and seal cover, the technological means that two contacts of contact switch are electrically connected to switching variable in instrument on ground by holding wire respectively, so, seal cover opening signal transfer device simple in structure, easy to manufacture, good reliability.When adopting seal cover opening signal transfer device, use insurance rope, insurance rope is iron wire, the technological means that the two ends of iron wire are electrically connected to switching variable in instrument on ground by holding wire respectively, the structure of seal cover opening signal transfer device is simpler, it is easier to manufacture, and manufacturing cost is lower.
6, 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) through this first open-work, the two ends of the first adjusting screw(rod) are furnished with respectively adjusting nut, or, 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 iron 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) through this second open-work, the two ends of the second adjusting screw(rod) are furnished with respectively adjusting nut, or, 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 iron wire, so, not only can be so that adjusting be installed, but also more effectively balance one-way plug one is blocked up by drag rope the active force to support bar, and can prevent from triggering opening device in transportation installation process.
7, the technical program is owing to having 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 blank flange, so, can further improve the sealing performance of gas injection port.Again owing to having 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 blank flange.When using dismountable positioning bolt to be located by connecting, before system works, dismountable positioning bolt is removed.
8, the technical program is owing to having adopted guide hole to extend towards the direction at support bar place and towards the direction at support bar place the technological means that forms conduit, so, be conducive to the sealing between drag rope and conduit, prevent that slip casting from overflowing from conduit.Again owing to having adopted conduit to be offset to the technological means on grouting pipe top, so, one-way plug one can be installed easily stifled.Also owing to having adopted the inside wall of grouting pipe to be cylinder, the stifled lateral wall of one-way plug one is also the technological means of the cylinder that the inside wall with grouting pipe matches, so, be conducive to manufacture.Again owing to having adopted in grouting pipe the technological means that is provided with spacing ring in guide hole and one-way plug one between stifled, 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 having adopted the inside wall of grouting pipe to be cone to the butt conical surface on described grouting pipe top, the stifled lateral wall of one-way plug one is also the technological means of the butt conical surface that the inside wall with described grouting pipe matches, and is more conducive to avoid gasifying agent to flow to grouting pipeline by grouting pipe.
9, the technical program, owing to having adopted the stifled lateral wall of one-way plug one to be provided with annular groove, is provided with the technological means of annular rubber ring in annular groove, so, can avoid piston directly to contact with Grouting Pipe, thereby avoid getting rusty and cause piston to move.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the utility model underground gasification system.
Fig. 2 is the structure enlarged diagram of a gasification unit in 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 in Fig. 2.
Fig. 5 is the structure enlarged diagram of gas injection port opening device the first embodiment in Fig. 2.
Fig. 6 is the structure enlarged diagram of gas injection port opening device the second embodiment in Fig. 2.
Fig. 7 is the structure enlarged diagram of the third embodiment of gas injection port opening device in Fig. 2.
Fig. 8 is the structure enlarged diagram of the 4th kind of embodiment of gas injection port opening device in Fig. 2.
Fig. 9 is the structure enlarged diagram of the first embodiment of grouting pipe in Fig. 2.
Figure 10 is the structure enlarged diagram of the second embodiment of grouting pipe in Fig. 2.
Figure 11 be in Fig. 8 B to partial enlarged drawing.
The specific embodiment
As shown in Figures 1 to 10, the utility model provides a kind of underground gasification system gas injection device that is placed in 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.Each section of described gasifying agent carrier pipe 1 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, as spherical shell, first spherical shell, first cylindrical shell etc.Like this, when tunnel top seam drops on sleeve 9, can directly be slipped to bottom surface, tunnel, can effectively avoid piling up coal seam on sleeve 9 and sleeve 9 is damaged by pressure.On described sleeve 9, be provided with a plurality of gasifying agent openings 91, 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 can be also a large gasifying agent opening hole, and gasifying agent opening 91 also can be arranged on any position of sleeve 9 housings.On each section of described gasifying agent carrier pipe 1, be positioned at described sleeve 9 and be respectively arranged with unidirectional stop valve 2, grouting port and gas injection port 4; Described in each, unidirectional stop valve 2 is separately positioned in each section of described gasifying agent carrier pipe 1, and according to being channel setting along the mobile direction of gasifying agent; Described in each, grouting port is separately positioned on the tube wall of each section of described gasifying agent carrier pipe 1, 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 in figure) by the grouting pipeline 8 penetrating in sleeve 9; The sidewall of described grouting pipe 3 is provided with guide hole; Described in each gas injection port 4 respectively corresponding described grouting port 3(be 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 each section of described gasifying agent carrier pipe 1, 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, by means of sleeve 9 tops, is pressed in the support bar 62 on seal cover 61; Be arranged in described grouting pipe 3 for stoping gasifying agent to flow to the one-way plug one stifled 63 of grouting pipeline 8 from grouting pipe 3; Through 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, for fear of grouting pipeline 8 and support bar 62, clash, grouting pipeline 8 is avoided from the rear end face of sleeve 9 top, top that support bar 62 penetrates into grouting pipe 3 and after twice orthogonal right angle bending, is communicated with the top port of grouting pipe 3.As shown in Figure 5, described support bar 62 be axial elasticity support bar 62(as shown in Figure 5).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.
For clarity sake, now some predicates are described as follows.
The import of gasifying agent carrier pipe: i.e. right side arrow place in Fig. 1.
The outlet of gasifying agent carrier pipe: arrow place on the left of in Fig. 1.
Initial gas injection point: in tunnel the region of adjacent gas agent carrier pipe outlet.
The first sleeve: be nested with first sleeve on (from left to right first paragraph) gasifying agent carrier pipe 1.
The first gas injection point: in tunnel the region in a plurality of holes on contiguous the first sleeve.
The first gas injection port: the gas injection port on (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 (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 (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: while starting to gasify, all gas injection port opening devices are all 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 gasifying agent carrier pipe and gasifying agent carrier pipe, the initial gas injection point of the tunnel end is carried out to gasification process.After initial gas injection point gasification, 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 from like this that gasifying agent from continuing to flow to initial gas injection point and causing that gas quality degenerates even to set off an explosion.Meanwhile, in the first grouting pipe, the pressure of slurries and gravity cause the first one-way plug one in the first grouting pipe to be blocked up to the first gasifying agent conveying in-pipe.The first one-way plug one is stifled pulls the first drag rope to drive the first support bar in the first opening device to move, make the first support bar lose the top pressure effect to the first seal cover, under the pressure-acting of the first seal cover in the first gasifying agent carrier pipe, be unlocked, 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 tunnel is carried out to gasification process.After the first gas injection point gasification, 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.Process is below similar to noted earlier.
Present embodiment is owing to having adopted gas injection port to dispose opening device, opening device comprises that lid puts seal cover on gas injection port, by means of sleeve top, is pressed in the support bar on seal cover, be arranged in described grouting pipe stifled for the one-way plug one that stops gasifying agent to flow to grouting pipeline from grouting pipe, through 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 can being automatically open at when starting grouting operation, gas injection point after need not being open at by manual control, brings great convenience to staff.Again owing to having adopted each section of gasifying agent carrier pipe to be equipped with respectively sleeve, on sleeve, be provided with the technological means of a plurality of gasifying agent openings, so, not only can play the fixing effect of supporting to opening device, but also can play to gasifying agent carrier pipe the effect of protection, drop and smash gas injection point opening device and safeties in the coal seam that prevents tunnel end face, more can play the guiding role to the mobile of gasifying agent, can play heat insulation effect to gasifying agent carrier pipe again, make the temperature in gasifying agent carrier pipe substantially approach normal temperature, can prevent that the slip casting in injected gas agent carrier pipe from producing cracking, can effectively prevent that gasifying agent from flowing to the region of having gasified above by the crack of one way valve and slip casting, effectively avoided coal gas to mix mutually with gasifying agent the danger that reduces gas quality and blast.Also owing to having adopted each unidirectional stop valve to be separately positioned in each section of gasifying agent carrier pipe, and according to the technological means that is channel setting along the mobile direction of gasifying agent, so, can effectively prevent that slip casting from flow stopping up the path that gasifying agent flows to gas injection port backward.Again owing to having 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.Owing to having adopted support bar, be more the technological means of axial elasticity support bar, so, be conducive to improve the sealing performance of seal cover, be also conducive to the installation of axial elasticity support bar.Certainly, support bar also can adopt rigid supporting rod.Obviously, axial elasticity support bar is better than rigid supporting rod.
As present embodiment, further improve, 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, described seal cover 61 end face middle parts are provided with one end of described axial elasticity support bar 62 and are accordingly cone recess (referring to Fig. 5, certainly, one end that described seal cover 61 end faces middle parts also can be provided with described axial elasticity support bar 62 is horizontal tri-prismoid recess accordingly, referring to Fig. 6, or be 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 face that the inside wall of described sleeve 9 and described seal cover 31 end face middle parts face is provided with the other end of described axial elasticity support bar 62 and is accordingly hemisphere recess (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 parts face also can be provided with described axial elasticity support bar 62 is horizontal tri-prismoid recess accordingly, referring to Fig. 6, or be 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, 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 was placed in described seal cover 61 end faces middle parts is cone recess (referring to Fig. 5 or Fig. 6), on the face facing, is hemisphere recess (referring to Fig. 5 or Fig. 6) in the middle part of the inside wall that the other end of described axial elasticity support bar 62 is placed in described sleeve 9 and described seal cover 61 end faces.
Present embodiment is owing to having adopted one end of axial elasticity support bar to be cone, and the other end is hemispheroidal technological means, so install more convenient.When having adopted one end of axial elasticity support bar to be horizontal tri-prismoid, when the other end is horizontal semicylinder, the installation stability of axial elasticity support bar is better.
As present embodiment, further improve, 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 face facing in the middle part of the other end of described axial elasticity support bar 62 and the inside wall that is positioned at described sleeve 9 and described seal cover 61 end faces is hinged (referring to Fig. 7, certainly, the other end of described axial elasticity support bar 62 also can be hinged with described seal cover 61 end face middle parts, referring to Fig. 8), correspondingly, described seal cover 61 end face middle parts are provided with one end of described axial elasticity support bar 62 and are accordingly cone recess (referring to Fig. 7, certainly, described seal cover 61 end face middle parts also can be provided with the tri-prismoid recess that is horizontal or be 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 is placed in the described recess at described seal cover 61 end face middle parts (referring to Fig. 7, certainly, the face that the inside wall of described sleeve 9 and described seal cover 61 end face middle parts face also can be provided with one end of described axial elasticity support bar 62 and be accordingly cone recess, referring to Fig. 8, or be horizontal tri-prismoid recess or be 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, 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 is placed in the described recess on the face that the inside wall of described sleeve 9 and described seal cover 61 end faces middle parts face).
Present embodiment is owing to having adopted the other end and the described seal cover end face middle part of axial elasticity support bar hinged, one end of axial elasticity support bar is placed in 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 stability of axial elasticity support bar is better.
As present embodiment, further improve again, as shown in Figure 2, in described underground gasification system, gas injection device also comprises safeties 7; 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 having adopted safeties to comprise 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 insurance other end of rope and the rear end of sleeve are connected, the technological means that insurance rope and drag rope are located on the same line, so balance one-way plug one is blocked up by drag rope the active force to support bar effectively, prevents the unexpected slippage of support bar.
As present embodiment, also further improve, as shown in Figure 8 and Figure 11, described opening device 6 is provided with seal cover opening signal transfer device 66(referring to Fig. 8).Described seal cover opening signal transfer device 66 comprises the contact switch being arranged between described gas injection port 4 and 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, now, contact switch is in off-state.When closing seal cover 61, seal cover 61 presses to knob 664 in housing 661, and brace 663 is electrically connected to two contacts 662, makes contact switch in on-state.Two contacts 662 of described contact switch are electrically connected to the switching variable in instrument on ground (not drawing in figure) by holding wire (not drawing in figure) 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 iron wire, and the two ends of described iron wire are electrically connected to the switching variable in instrument on ground by holding wire respectively.
Present embodiment is owing to having adopted seal cover opening signal transfer device to comprise the contact switch being arranged between gas injection port and seal cover, the technological means that two contacts of contact switch are electrically connected to switching variable in instrument on ground by holding wire respectively, so, seal cover opening signal transfer device simple in structure, easy to manufacture, good reliability.When adopting seal cover opening signal transfer device, use insurance rope, insurance rope is iron wire, the technological means that the two ends of iron wire are electrically connected to switching variable in instrument on ground by holding wire respectively, the structure of seal cover opening signal transfer device is simpler, it is easier to manufacture, low cost of manufacture.
As present embodiment, further improve, as shown in Fig. 2, Fig. 5, Fig. 6, Fig. 7 and Fig. 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 through this first open-work; The two ends of described the first adjusting screw(rod) are furnished with respectively adjusting nut 651,652; Or 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 iron 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 through this second open-work; The two ends of described the second adjusting screw(rod) are furnished with respectively adjusting nut 721,722; Or 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 iron wire 71.
Present embodiment is wire rope owing to having adopted drag rope, insurance rope is iron 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) through this first open-work, the two ends of the first adjusting screw(rod) are furnished with respectively adjusting nut, or, 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 iron 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) through this second open-work, the two ends of the second adjusting screw(rod) are furnished with respectively adjusting nut, or, 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 iron wire, so, not only can be so that install to regulate, but also more effectively balance one-way plug one stifled by drag rope the active force to support bar.
As present embodiment, further improve, 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 matching with described flange; Between described flange and blank flange, be provided with sealing mat (not drawing in figure); 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 is owing to having 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 blank flange, so, can further improve the sealing performance of gas injection port.Again owing to having 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 blank flange.When using dismountable positioning bolt to be located by connecting, before system works, dismountable positioning bolt is removed.
As present embodiment, also further improve, as shown in Figure 9 and Figure 10, described guide hole is towards the direction at described support bar 62 places and extend formation conduit 5 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 described guide hole and the bottom of 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 is also the cylinder that the inside wall with described grouting pipe 3 matches; In described grouting pipe 3, between described guide hole and described one-way plug one stifled 63, be provided with spacing ring 632; Or 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 is also the butt conical surface that the inside wall with described grouting pipe 3 matches.
Present embodiment is owing to having adopted guide hole to extend towards the direction at support bar place and towards the direction at support bar place the technological means that forms conduit, so, be conducive to the sealing between drag rope and conduit, prevent that slip casting from overflowing from conduit.Again owing to having adopted conduit to be offset to the technological means on grouting pipe top, so, one-way plug one can be installed easily stifled.Also owing to having adopted the inside wall of grouting pipe to be cylinder, the stifled lateral wall of one-way plug one is also the technological means of the cylinder that the inside wall with grouting pipe matches, so, be conducive to manufacture.Again owing to having adopted in grouting pipe the technological means that is provided with spacing ring in guide hole and one-way plug one between stifled, 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 having adopted the inside wall of grouting pipe to be cone to the butt conical surface on described grouting pipe top, the stifled lateral wall of one-way plug one is also the technological means of the butt conical surface that the inside wall with described grouting pipe matches, and is more conducive to avoid gasifying agent to flow to grouting pipeline by grouting pipe.
As present embodiment, further improve, as shown in Figure 9 and Figure 10, the lateral wall of described one-way plug one stifled 63 is provided with annular groove; In described annular groove, be provided with annular rubber ring 631.
Present embodiment, owing to having adopted the stifled lateral wall of one-way plug one to be provided with annular groove, is provided with the technological means of annular rubber ring in annular groove, so, can avoid piston directly to contact with Grouting Pipe, thereby avoid getting rusty and cause piston to move.
Claims (8)
1. a gas injection device in underground gasification system, comprises gasifying agent carrier pipe; Described gasifying agent carrier pipe is divided into multistage; It is characterized in that: each section of described gasifying agent carrier pipe is equipped with respectively sleeve; On each section of described gasifying agent carrier pipe, grouting port and gas injection port are set respectively; In each section of described gasifying agent carrier pipe, be provided with unidirectional stop valve, described unidirectional stop valve is according to being channel setting along the mobile direction of 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 in gas injection port side one end and gasifying agent carrier pipe, and quill is to being provided with gasifying agent opening in grouting port side one end; The grouting pipe being connected with grouting port passes with slip casting controller and is communicated with from sleeve, in sleeve, in described grouting pipe, be provided with the one-way plug one that can be gone out by injection slurry stifled, a 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 gas injection port by means of supporting masthead; Described pull rope of drawing from grouting pipe sidewall guide hole is connected to support bar, pulls support bar, and seal cover comes off, and gas injection port is communicated with sleeve; Described support bar is axial elasticity support bar; Described axial elasticity support bar comprises sleeve pipe and is positioned at the spring of sleeve pipe; The two-port of sleeve pipe is inserted with respectively quiet support bar and moving support bar; One end of described quiet support bar is fixedly connected with by screw thread with a port of described sleeve pipe or is bonding.
2. gas injection device in underground gasification system according to claim 1, is characterized in that: 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, one end that described seal cover end face middle part is provided with described axial elasticity support bar is accordingly cone recess or is horizontal tri-prismoid recess or is hemisphere recess or is horizontal semicylinder recess; The other end that the face that the inside wall of described sleeve and described seal cover end face middle part faces is provided with described axial elasticity support bar is accordingly cone recess or is horizontal tri-prismoid recess or is hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar is placed in the described recess at described seal cover end face middle part, the described recess on the face facing in the middle part of the inside wall that the other end of described axial elasticity support bar is placed in described sleeve and described seal cover end face.
3. gas injection device in underground gasification system according to claim 1, is characterized in that: one end of described axial elasticity support bar is cone or is horizontal tri-prismoid or is hemisphere or is horizontal semicylinder; The face facing in the middle part of the other end of described axial elasticity support bar and the inside wall that is positioned at described sleeve and described seal cover end face is hinged; One end that described seal cover end face middle part is provided with described axial elasticity support bar is accordingly cone recess or is horizontal tri-prismoid recess or is hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar is placed in the described recess at described seal cover end face middle part; Or the other end of described axial elasticity support bar and described seal cover end face middle part are hinged; One end that the face that the inside wall of described sleeve and described seal cover end face middle part faces is provided with described axial elasticity support bar is accordingly cone recess or is horizontal tri-prismoid recess or is hemisphere recess or is horizontal semicylinder recess; One end of described axial elasticity support bar is placed in the described recess on the face that the inside wall of described sleeve and described seal cover end face middle part face.
4. gas injection device in underground gasification system according to claim 1, is characterized in that: described opening device is provided with safeties; Described safeties comprise 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.
5. gas injection device in underground gasification system according to claim 4, 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) through this first open-work; The two ends of described the first adjusting screw(rod) are furnished with respectively adjusting nut; Or 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; Described insurance rope is iron wire; The rear end of described the first adjusting screw(rod) is connected with the front end of described iron 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) through this second open-work; The two ends of described the second adjusting screw(rod) are furnished with respectively adjusting nut; Or 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 iron wire.
6. gas injection device in underground gasification system according to claim 1, is characterized in that: described gas injection port is provided with flange; Described seal cover is the blank flange matching with described flange; Between described flange and blank flange, be provided with sealing mat; 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.
7. gas injection device in underground gasification system according to claim 1, is characterized in that: described guide hole is towards the direction at described support bar place and extend formation conduit 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 described guide hole and the bottom of grouting pipe; The inside wall of described grouting pipe is cylinder; Correspondingly, the stifled lateral wall of described one-way plug one is also 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 described grouting pipe; Or 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 is also the butt conical surface that the inside wall with described grouting pipe matches.
8. gas injection device in underground gasification system according to claim 1, is characterized in that: the stifled lateral wall of described one-way plug one is provided with annular groove; In described annular groove, be provided with annular rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320471718.XU CN203488162U (en) | 2013-08-05 | 2013-08-05 | Gas injection device in underground gasification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320471718.XU CN203488162U (en) | 2013-08-05 | 2013-08-05 | Gas injection device in underground gasification system |
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| CN203488162U true CN203488162U (en) | 2014-03-19 |
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| CN201320471718.XU Expired - Fee Related CN203488162U (en) | 2013-08-05 | 2013-08-05 | Gas injection device in underground gasification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352685A (en) * | 2013-07-31 | 2013-10-16 | 北京中矿科能煤炭地下气化技术研究中心 | Gas injection point retreating type gas injection device used in underground gasification system |
-
2013
- 2013-08-05 CN CN201320471718.XU patent/CN203488162U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352685A (en) * | 2013-07-31 | 2013-10-16 | 北京中矿科能煤炭地下气化技术研究中心 | Gas injection point retreating type gas injection device used in underground gasification system |
| CN103352685B (en) * | 2013-07-31 | 2015-09-23 | 北京中矿科能煤炭地下气化技术研究中心 | Injection point backing formula gas injection device in a kind of underground gasification system |
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