CN214035761U - This coal seam large aperture gas drainage system - Google Patents
This coal seam large aperture gas drainage system Download PDFInfo
- Publication number
- CN214035761U CN214035761U CN202023106814.3U CN202023106814U CN214035761U CN 214035761 U CN214035761 U CN 214035761U CN 202023106814 U CN202023106814 U CN 202023106814U CN 214035761 U CN214035761 U CN 214035761U
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- China
- Prior art keywords
- gas drainage
- coal seam
- rod
- drill
- drainage system
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- Expired - Fee Related
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- 239000003245 coal Substances 0.000 title claims abstract description 32
- 239000011152 fibreglass Substances 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 19
- 239000011148 porous material Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003818 cinder Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of colliery gas drainage, concretely relates to this coal seam large aperture gas drainage system, the scheme of adoption is: this coal seam large aperture gas drainage system includes: drill bit, drill rod subassembly, flange interface and negative pressure system, the base of drill bit is connected with the drill rod subassembly, the multisection the drill rod subassembly connects gradually, the drill rod subassembly includes: the outer side sleeve of drilling rod is equipped with the sleeve pipe, sheathed tube inner wall with there is the space between the outer wall of drilling rod, the drilling rod can the intraductal rotation of sleeve pipe, when the drill bit creeps into the back in place, takes out drill bit and drilling rod, leaves the sleeve pipe in the gas drainage pore the sleeve pipe is located the outer end department mounting flange interface in pore, the sleeve pipe pass through the flange interface with negative pressure system is connected.
Description
Technical Field
The utility model belongs to the technical field of colliery gas drainage, concretely relates to this coal seam large aperture gas drainage system.
Background
In order to achieve the purpose of safe production, in the mining of outburst and high-gas coal mines, gas drainage is firstly carried out; currently, a coal mine discharges gas in a coal mining area, and drilling, gas compression and extraction methods are generally adopted; once the coal seam is drilled in place in the gas drainage drilling process, the drill rod needs to be pulled out, gas in the coal seam permeates into the gas drainage hole and is drained out of the gas drainage hole, however, in the actual operation process, the coal seam of the coal seam is soft in texture, and after the drill rod is pulled out, the phenomenon of hole collapse often occurs, the gas drainage drilling hole is blocked, so that the gas cannot be timely drained and exhausted, the drainage effect is affected, serious potential safety hazards are brought to subsequent coal mining, the drilling is carried out again, the cost is increased, the time is delayed, and the problem of hole collapse cannot be solved.
In order to solve the problem of hole collapse, an integrated gas drainage drill rod is mostly adopted, and after drilling is completed, the gas drainage drill rod is left in a hole channel for gas drainage.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art exists not enough, provides an efficient this coal seam large aperture gas drainage system is taken out to gas drainage.
In order to solve the technical problem, the utility model discloses a technical scheme be:
this coal seam large aperture gas drainage system includes: drill bit, drill rod subassembly, flange interface and negative pressure system, the drill bit with the drill rod subassembly is connected, and the multisection the drill rod subassembly connects gradually, the drill rod subassembly includes: the outer side sleeve of drilling rod is equipped with the sleeve pipe, sheathed tube inner wall with there is the space between the outer wall of drilling rod, the drilling rod can the intraductal rotation of sleeve pipe, when the drill bit creeps into the back in place, takes out drill bit and drilling rod, leaves the sleeve pipe in gas drainage pore, and the staff seals sleeve pipe end department and gas drainage pore's clearance with sealing material the sleeve pipe is located the outer end department mounting flange interface in pore, the sleeve pipe pass through the flange interface with negative pressure system is connected.
The drill rod includes: the coal cinder drill comprises a rod body and a plurality of rotary vanes, wherein the plurality of rotary vanes are fixed on the outer wall of the rod body along a spiral line, and coal cinder generated in the drilling process can be discharged out of a pore channel through the rotary vanes.
The drill bit is scalable drill bit, the drill bit is including digging end and base, it is provided with a plurality of tunnelling teeth to dig to serve, a plurality of tunnelling teeth are circular equipartition setting around the center of digging the end, it links to each other through a plurality of stoppers between end and the base to dig, a plurality of stoppers are circular equipartition setting around the center of base, be provided with the expansion tooth between the adjacent stopper, a plurality of expansion teeth articulate on the base and are circular equipartition around the center of base, the expansion tooth can rotate between the stopper on its both sides, the central point of base puts the cover and is equipped with the pivot, the top of pivot is provided with a plurality of racks, the rack on pivot top contacts with the afterbody of a plurality of expansion teeth, a plurality of expansion teeth can rotate under the drive of rack, the pivot with pole body coaxial coupling.
The base has a diameter less than the inner diameter of the casing so that the retractable drill bit may be withdrawn from the casing.
The side wall of the sleeve is provided with a plurality of through holes.
The two ends of the sleeve are respectively provided with an internal thread and an external thread which are matched with each other, and the multiple sections of sleeves are connected through the threads.
The one end of pole body is provided with the hexagonal and connects, the other end of pole body is equipped with the hexagonal recess that corresponds with the hexagonal joint, the hexagonal of pole body connects to insert and inserts in the hexagonal recess of its adjacent pole body, still is provided with a plurality of coupling assembling between two adjacent pole bodies, coupling assembling includes: two connecting seats are respectively arranged on the outer walls of the adjacent rod bodies and are fastened through bolts.
The drill rod comprises a drill rod body, wherein a plurality of support rods are arranged on the outer wall of the drill rod body, one end of each support rod is fixed on the drill rod body, a sliding block is arranged at the other end of each support rod, the sliding block is attached to the inner wall of the corresponding sleeve, the sliding block can slide along the inner wall of the corresponding sleeve, the sleeve is rigid, the sleeve does not participate in drilling, the drill rod can be prevented from deviating due to the arrangement of the support rods, and the drill rod is prevented from interfering with the sleeve when rotating.
The bracing piece is provided with threely, three the bracing piece is followed the outer wall circumference of pole body evenly sets up.
The sleeve is made of glass fiber reinforced plastics, the glass fiber reinforced plastics are low in density and high in tensile strength, meanwhile, the glass fiber reinforced plastics are high in corrosion resistance, can adapt to complex environments in coal beds, the service life of the sleeve is prolonged, the manufacturability is good, and the economic effect is remarkable.
The length of each section of the sleeve is 80 cm.
The inner diameter of the cannula is 35 cm.
The outer diameter of the drill rod is 30cm, and the diameter of the rod body is 15 cm.
The diameter of the base of the drill bit is 30cm, and the diameter of the expanded tooth of the drill bit is 50 cm.
Compared with the prior art, the utility model following beneficial effect has.
The utility model has the advantages that the casing pipe is arranged, after the drilling work is finished, the drill bit and the drill rod can be directly drawn out, the casing pipe is left in the gas drainage hole channel, the hole collapse can be prevented, meanwhile, the casing pipe is sleeved outside the drill rod, and compared with the gas drainage drill rod in the prior art, the casing pipe of the utility model has larger diameter and high gas drainage efficiency;
two, the utility model discloses a be provided with a plurality of through-holes on the sleeve pipe lateral wall, can extract the gas of each position in the gas drainage pore, improve the gas drainage effect.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the connection between the sleeve and the negative pressure device of the present invention.
Fig. 3 is a sectional view of the sleeve of the present invention.
Figure 4 is a cross-sectional view of the rod body of the present invention.
Fig. 5 is a schematic structural view of the support rod of the present invention.
Fig. 6 is a schematic structural diagram of the drill bit of the present invention.
Fig. 7 is a schematic structural view of the expanding tooth and the base of the present invention.
Fig. 8 is a schematic structural view of the connection assembly of the present invention.
Fig. 9 is a sectional view taken along line a-a of fig. 8 according to the present invention.
In the figure: the coal seam drilling machine comprises a drill bit 1, a flange connector 2, a negative pressure system 3, a sleeve 4, a drill rod 5, a coal seam 6, a support rod 7, a connecting seat 8, a bolt 9, a nut 10, a tunneling end 11, a base 12, a tunneling tooth 13, a limiting block 14, an expansion tooth 15, a rotating shaft 16, a rack 17, a through hole 41, a rod body 51, a rotary vane 52, a hexagonal joint 53, a hexagonal groove 54 and a sliding block 71.
Detailed Description
The following is a further description with reference to specific examples.
This coal seam large aperture gas drainage system includes: drill bit 1, drill rod subassembly, flange interface 2 and negative pressure system 3, drill bit 1 with the drill rod subassembly is connected, the multisection the drill rod subassembly connects gradually, the drill rod subassembly includes: the device comprises a casing 4 and a drill rod 5, wherein the casing 4 is sleeved on the outer side of the drill rod 5, a gap is reserved between the inner wall of the casing 4 and the outer wall of the drill rod 5, and the casing 4 is connected with the negative pressure system 3 through the flange connector 2.
The drill rod 5 comprises: the screw rod comprises a rod body 51 and a plurality of rotary vanes 52, wherein the rotary vanes 52 are fixed on the outer wall of the rod body 51 along a spiral line.
The drill bit 1 is a telescopic drill bit, the drill bit 1 comprises a digging end 11 and a base 12, three digging teeth 13 are arranged on the digging end 11, the three digging teeth 13 are arranged in a circular and uniform manner around the center of the digging end 11, the digging end 11 is connected with the base 12 through three limit blocks 14, the three limit blocks 14 are arranged in a circular and uniform manner around the center of the base 12, expansion teeth 15 are arranged between the adjacent limit blocks 14, the three expansion teeth 15 are hinged on the base 12 and are arranged in a circular and uniform manner around the center of the base 12, the expansion teeth 15 can rotate between the limit blocks 14 on two sides of the expansion teeth, a rotating shaft 16 is sleeved at the center of the base 12, a plurality of racks 17 are arranged at the top end of the rotating shaft 16, the rack 17 at the top end of the rotating shaft 16 is contacted with the tails of the three expansion teeth 15, the three expansion teeth 15 can rotate under the driving of the racks 17, the rotating shaft 16 is coaxially and fixedly connected with the rod body 51.
A plurality of through holes 41 are formed in the sidewall of the sleeve 4.
And the two ends of the sleeve 4 are respectively provided with an internal thread and an external thread which are matched with each other, and the multiple sections of the sleeve 4 are in threaded connection.
One end of the rod body 51 is provided with a hexagonal joint 53, the other end of the rod body 51 is provided with a hexagonal groove 54 corresponding to the hexagonal joint 53, the hexagonal joint 53 of the rod body 51 is inserted into the hexagonal groove 54 of the adjacent rod body 51, two connecting assemblies are further arranged between the two adjacent rod bodies 51, and each connecting assembly comprises: two connecting seats 8 are respectively arranged on the outer walls of the adjacent rod bodies 51, and the two connecting seats 8 are fastened through bolts 9 and nuts 10.
The outer wall of the drill rod 5 is provided with three support rods 7, one ends of the support rods 7 are fixed on the drill rod 5, the other ends of the support rods 7 are provided with sliders 71, the sliders 71 are attached to the inner wall of the casing 4, and the three support rods 7 are uniformly arranged along the circumferential direction of the outer wall of the rod body 51.
The sleeve 4 is made of glass fiber reinforced plastic.
The length of each section of the casing 4 is 80 cm.
The inner diameter of the cannula 4 is 35 cm.
The outer diameter of the drill rod 5 is 30cm, and the diameter of the rod body 51 is 15 cm.
The diameter of the base 15 of the drill bit 1 is 30cm, and the diameter of the expanded tooth 12 of the drill bit 1 is 50 cm.
The utility model discloses a use method as follows:
the staff assembles drill bit and drill rod subassembly, creeps into work, can be according to the operational aspect, connects multisection drill rod subassembly, makes and creeps into to suitable position, creeps into the back when target in place when the drill bit, and control rig reversal drilling rod, the expansion tooth of drill bit withdraws, takes out drill bit and drilling rod, leaves the sleeve pipe in the gas drainage pore, and the staff seals sleeve pipe end department and the clearance in gas drainage pore with sealing material the sleeve pipe is located the outer end department mounting flange interface in pore, the sleeve pipe pass through the flange interface with negative pressure system is connected, and negative pressure system is taken out the gas in this coal seam through the sleeve pipe and is put.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. It will be apparent to those skilled in the art that modifications and improvements can be made to the above-described embodiments without departing from the spirit and scope of the invention. Accordingly, it will be appreciated that those skilled in the art, upon attaining an understanding of the foregoing may readily produce alterations to, variations of, and equivalents to these embodiments without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (10)
1. This coal seam large aperture gas drainage system, its characterized in that includes: drill bit (1), drill rod subassembly, flange interface (2) and negative pressure system (3), drill bit (1) with the drill rod subassembly is connected, and the multisection the drill rod subassembly connects gradually, the drill rod subassembly includes: the device comprises a sleeve (4) and a drill rod (5), wherein the sleeve (4) is sleeved on the outer side of the drill rod (5), a gap exists between the inner wall of the sleeve (4) and the outer wall of the drill rod (5), and the sleeve (4) is connected with the negative pressure system (3) through the flange interface (2).
2. The coal seam large-aperture gas drainage system according to claim 1, wherein the drill pipe (5) comprises: the spiral rod comprises a rod body (51) and a plurality of rotary vanes (52), wherein the rotary vanes (52) are fixed on the outer wall of the rod body (51) along a spiral line.
3. The coal seam large-aperture gas drainage system according to claim 2, wherein the drill bit (1) is a telescopic drill bit, the drill bit (1) comprises a digging end (11) and a base (12), the digging end (11) is provided with a plurality of digging teeth (13), the plurality of digging teeth (13) are circularly and uniformly distributed around the center of the digging end (11), the digging end (11) is connected with the base (12) through a plurality of limit blocks (14), the plurality of limit blocks (14) are circularly and uniformly distributed around the center of the base (12), expansion teeth (15) are arranged between adjacent limit blocks (14), the plurality of expansion teeth (15) are hinged on the base (12) and circularly and uniformly distributed around the center of the base (12), the expansion teeth (15) can rotate between the limit blocks (14) on both sides, the central point of base (12) puts the cover and is equipped with pivot (16), the top of pivot (16) is provided with a plurality of racks (17), rack (17) on pivot (16) top contacts with the afterbody of a plurality of expansion teeth (15), a plurality of expansion teeth (15) can be rotatory under the drive of rack (17), pivot (16) with the coaxial fixed connection of pole body (51).
4. The coal seam large-aperture gas drainage system according to claim 3, wherein the diameter of the base (12) is smaller than the inner diameter of the casing (4).
5. The coal seam large-aperture gas drainage system according to claim 1, wherein a plurality of through holes (41) are formed in the side wall of the casing (4).
6. The coal seam large-aperture gas drainage system according to claim 1, wherein the two ends of the casing (4) are respectively provided with an internal thread and an external thread which are matched with each other, and the plurality of sections of casings (4) are connected through threads.
7. The coal seam large-aperture gas drainage system according to claim 2, wherein one end of the rod body (51) is provided with a hexagonal joint (53), the other end of the rod body (51) is provided with a hexagonal groove (54) corresponding to the hexagonal joint (53), the hexagonal joint (53) of the rod body (51) is inserted into the hexagonal groove (54) of the adjacent rod body (51), a plurality of connecting assemblies are further arranged between two adjacent rod bodies (51), and each connecting assembly comprises: the two connecting seats (8) are respectively arranged on the outer walls of the adjacent rod bodies (51), and the two connecting seats (8) are fastened through bolts (9) and nuts (10).
8. The coal seam large-aperture gas drainage system according to claim 2, wherein a plurality of support rods (7) are arranged on the outer wall of the drill rod (5), one ends of the support rods (7) are fixed on the drill rod (5), and the other ends of the support rods (7) are provided with sliding blocks (71), wherein the sliding blocks (71) are attached to the inner wall of the casing (4).
9. The coal seam large-aperture gas drainage system according to claim 8, wherein the number of the support rods (7) is three, and the three support rods (7) are uniformly arranged along the circumferential direction of the outer wall of the rod body (51).
10. The system for the drainage of the large-aperture gas in the coal seam according to claim 1, wherein the sleeve (4) is made of glass fiber reinforced plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023106814.3U CN214035761U (en) | 2020-12-22 | 2020-12-22 | This coal seam large aperture gas drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023106814.3U CN214035761U (en) | 2020-12-22 | 2020-12-22 | This coal seam large aperture gas drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214035761U true CN214035761U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023106814.3U Expired - Fee Related CN214035761U (en) | 2020-12-22 | 2020-12-22 | This coal seam large aperture gas drainage system |
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| CN (1) | CN214035761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700522A (en) * | 2021-09-03 | 2021-11-26 | 中煤科工集团沈阳研究院有限公司 | Gas extraction process method of lower screen pipe while drilling and matched lower screen pipe drill bit |
-
2020
- 2020-12-22 CN CN202023106814.3U patent/CN214035761U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700522A (en) * | 2021-09-03 | 2021-11-26 | 中煤科工集团沈阳研究院有限公司 | Gas extraction process method of lower screen pipe while drilling and matched lower screen pipe drill bit |
| CN113700522B (en) * | 2021-09-03 | 2023-09-22 | 中煤科工集团沈阳研究院有限公司 | Gas extraction process method for lower screen pipe while drilling and matched lower screen pipe drill bit |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210824 |