CN213510564U - Jet device for coal seam hydraulic cutting - Google Patents
Jet device for coal seam hydraulic cutting Download PDFInfo
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- CN213510564U CN213510564U CN202022260126.6U CN202022260126U CN213510564U CN 213510564 U CN213510564 U CN 213510564U CN 202022260126 U CN202022260126 U CN 202022260126U CN 213510564 U CN213510564 U CN 213510564U
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- jet
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- coal seam
- device body
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Abstract
The utility model discloses a coal seam is ejector for hydraulic cutting, including the fluidic device body, be formed with first connector and second connector respectively in the axial both ends of the fluidic device body, the fluidic device body has the socket and spigot cavity, the tip and the first connector of high pressure water service drilling rod are connected and stretch into the socket and spigot cavity, the second connector is connected with director or drill bit, and the one end of director or drill bit connected stretches into the socket and spigot cavity, on the fluidic device body and be located the clearance position department between the tip that high pressure water service drilling rod stretches into the socket and spigot cavity and director or drill bit stretch into the socket and spigot cavity, these pilot holes set up along the circumference interval of the fluidic device body, at least one cutting nozzle can dismantle through corresponding pilot hole and connect on the fluidic device body, and the pilot hole of unassembled cutting nozzle is through the end cap shutoff. The utility model has the characteristics of coal seam fracturing operation is simple, and operation intensity is little, and the potential safety hazard is low etc, is applicable to coal seam fracturing's technical field.
Description
Technical Field
The utility model belongs to the technical field of coal seam fracturing, specifically speaking relates to a coal seam is ejector for hydraulic cutting.
Background
At present, the common means of the coal seam fracturing mode are as follows: and drilling the coal bed by using a drilling machine, extending the fracturing pipe into a preset position in a drilled hole after the drilling is finished, and providing high-pressure water for the fracturing pipe by using a high-pressure water pump, wherein the high-pressure water jets into the gap of the coal bed and fractures the coal bed. By adopting the mode, the different heights and different angles of the fracturing pipes extending into the drill holes need to be adjusted, and further, the fracturing of different positions of the coal bed is realized. Like this for the process of coal seam fracturing is complicated, and operating strength is big, at the in-process of adjustment fracturing pipe, has intensity of labour big, the problem that the potential safety hazard is many.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hydraulic cutting of in-process fracturing coal seam for ejector for the coal seam creeps into solves the numerous and diverse, the big and many scheduling problems of potential safety hazard of working strength of coal seam fracturing.
In order to achieve the above object, the utility model adopts the following technical scheme:
a jet device for hydraulic cutting of coal seams comprises a jet device body, a first connecting nozzle and a second connecting nozzle are respectively formed at the two axial ends of the jet device body, the jet body is provided with a socket cavity which is formed in the jet body and is communicated with a first connecting nozzle and a second connecting nozzle, the end part of the high-pressure water-through drill rod is connected with the first connecting nozzle and extends into the socket cavity, the second connecting nozzle is connected with a guider or a drill bit, one end of the connected guider or drill bit extends into the socket cavity, a plurality of assembling holes are arranged on the jet body and at the gap position between the end part of the high-pressure water-through drill rod extending into the socket cavity and the end part of the guider or drill bit extending into the socket cavity, the plurality of assembling holes are arranged at intervals along the circumferential direction of the jet body, at least one cutting nozzle is detachably connected to the jet body through the corresponding assembling hole, and the assembling hole which is not provided with the cutting nozzle is plugged through a plug.
Furthermore, the first connecting nozzle and the second connecting nozzle are horn-shaped threaded mouths which are gradually reduced towards the socket cavity along the axial direction of the jet body.
Further, the guider or the drill bit is provided with a connector which is matched with the second connecting nozzle and is in threaded connection.
Furthermore, a socket part extending to the socket cavity along the axis is formed at the end part of the connector, the socket part is inserted in the socket cavity, and the outer wall of the socket part is attached to the inner wall of the socket cavity.
Furthermore, at least one sealing ring is nested on the circumferential surface of the socket part.
Furthermore, a plurality of operating recesses are formed on the circumferential outer wall of the jet body, and the operating recesses are uniformly arranged along the circumferential direction of the jet body.
Further, the cutting nozzle comprises a flow gathering part, a connecting part and a jet part which are integrally formed along the flow direction of the high-pressure water, and the connecting part is in threaded connection with the assembling hole.
Furthermore, one end of the flow gathering part close to the socket cavity is an arc surface which is sunken along the jet flow direction of high-pressure water, a plurality of flow gathering holes which are communicated with the socket cavity through the arc surface are formed in the flow gathering part, a jet hole is formed in the jet flow part, and one ends of the flow gathering holes far away from the arc surface are gathered at the water inlet end of the jet hole.
The utility model discloses owing to adopted foretell structure, it compares with prior art, and the technical progress who gains lies in: because the utility model is communicated with the high-pressure water-through drill rod, the high-pressure water enters the socket cavity from the high-pressure water-through drill rod and is sprayed into the gap of the coal bed through the cutting nozzle, thereby realizing the fracturing operation, and the coal bed is gradually fractured from shallow to deep along with the feeding of the guider or the drill bit; due to the combination of the jet body and the cutting nozzles, the combination of the cutting nozzles and the plugs with different specifications is selected according to the flow and the pressure of the high-pressure water pump, the number of the cutting nozzles is properly selected and assembled, and the rest assembling holes are plugged by the plugs, so that the maximum cutting radius can be achieved by adopting the above form, and the cutting efficiency is maximized; the end part of the high-pressure water-through drill rod is connected with the first connecting nozzle and extends into the socket cavity, so that the caliber of the socket cavity is larger than that of the end part of the high-pressure water-through drill rod, and the high-pressure water in the socket cavity is ensured to be kept in a full state all the time, so that sufficient high-pressure water can be provided for each cutting nozzle, and the phenomenon that the cutting nozzles are cut off due to insufficient water in the socket cavity is avoided, and the cutting effect is reduced; when the jet body is connected with the guider, the guider plays a role in guiding when the jet body and the high-pressure water-through drill rod are conveyed into the hole and can prevent the jet body from deviating and clamping, the guide can be used for drilling jet flow once after being changed into a drill bit, and the jet body does not need to be installed after the drill rod is withdrawn after drilling.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of the embodiment of the present invention connected to a high-pressure water closet and a high-pressure water drill pipe;
FIG. 2 is an axial structural cross-sectional view of a jet body according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a jet body and a drill bit or guide according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a cutting head according to an embodiment of the present invention;
FIG. 5 is a schematic view of the structure of FIG. 4 from another angle;
FIG. 6 is a sectional view of an axial structure of a cutting nozzle according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a guide or drill according to an embodiment of the present invention.
Labeling components: 100-high-pressure water jet, 200-drill rod joint, 300-high-pressure water-through drill rod, 400-jet body, 401-socket cavity, 402-first connecting nozzle, 403-second connecting nozzle, 404-assembly hole, 405-operation recess, 500-cutting nozzle, 501-flow gathering part, 502-connecting part, 503-jet part, 504-flow gathering hole, 505-jet hole, 506-cross groove, 600-guide or drill bit, 601-connecting head, 602-socket part and 603-sealing ring.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the invention.
The utility model discloses an ejector for coal seam hydraulic cutting, as shown in figure 1, two ends of a high-pressure water-through drill rod 300 are respectively connected with a drill rod joint 200 and the ejector, the drill rod joint 200 is connected with a high-pressure water closet 100, and the high-pressure water closet 100 is connected with a high-pressure water pump through a water inlet pipe joint; as shown in fig. 2 and 3, the high-pressure water-through drill rod comprises a jet body 400, wherein a first connecting nozzle 402 and a second connecting nozzle 403 are respectively formed at two axial ends of the jet body 400, the jet body 400 is provided with a socket cavity 401, the socket cavity 401 is formed inside the jet body 400, the socket cavity 401 is respectively communicated with the first connecting nozzle 402 and the second connecting nozzle 403, the end part of the high-pressure water-through drill rod 300 is connected with the first connecting nozzle 402 and extends into the socket cavity 401, the second connecting nozzle 403 is connected with a guide or a drill bit 600, and one end of the connected guide or drill bit 600 extends into the socket cavity 401; a plurality of assembling holes 404 are arranged on the jet body 400 at intervals along the circumferential direction of the jet body, the assembling holes 404 are respectively communicated with the socket cavity 401 and are positioned at a gap position between the end part of the high-pressure water-through drill rod 300 extending into the socket cavity 401 and the end part of the guider or drill 600 extending into the socket cavity 401, wherein at least one cutting nozzle 500 is detachably connected on the jet body 400 through the corresponding assembling hole 404, and the assembling hole 404 without the cutting nozzle 500 is blocked by a plug. The utility model discloses a theory of operation and advantage lie in: because the utility model is communicated with the high-pressure water-through drill rod 300, high-pressure water enters the socket cavity 401 from the high-pressure water-through drill rod 300 and is sprayed into the seam of the coal seam through the cutting nozzle 500, thereby realizing the fracturing operation, and the coal seam is gradually fractured from shallow to deep along with the feeding of the guider or the drill bit 600; due to the combination of the jet body 400 and the cutting spray heads 500, according to the flow and the pressure of the high-pressure water pump, the combination of the cutting spray heads 500 and the plugs with different specifications is selected, the number of the cutting spray heads 500 is properly selected, and the rest assembling holes 404 are plugged by the plugs, so that the maximum cutting radius can be achieved by adopting the above form, and the cutting efficiency is maximized; the end part of the high-pressure water-through drill rod 300 is connected with the first connecting nozzle 402 and extends into the socket cavity 401, so that the caliber of the socket cavity 401 is larger than that of the end part of the high-pressure water-through drill rod 300, and the high-pressure water in the socket cavity 401 is ensured to be in a full state all the time, so that sufficient high-pressure water can be provided for each cutting nozzle 500, and the phenomenon that the cutting nozzles 500 are broken due to insufficient water in the socket cavity 401 is avoided, and the cutting effect is reduced; when the jet body 400 is connected with the guider, the guider plays a role in guiding when being used for conveying the jet body 400 and the high-pressure water-through drill rod 300 into the hole and can prevent the jet body 400 and the high-pressure water-through drill rod from deviating and clamping, the jet can be drilled once after the guider is changed into a drill bit, and the jet body 400 is installed after the drill rod is withdrawn after the drill hole is not drilled.
As a preferred embodiment of the present invention, as shown in fig. 2, the first connection nozzle 402 and the second connection nozzle 403 are each a trumpet-shaped screw port that tapers toward the socket 401 along the axial direction of the jet body 400, and as shown in fig. 7, the guide and the drill bit each have a connection head 601 that is fitted and screwed to the second connection nozzle 403. Therefore, the connection between the jet body 400 and the high-pressure water drill pipe 300 through the first connecting nozzle 402 and the connection between the second connecting nozzle 403 and the guider or drill bit 600 have high connection strength and high shearing resistance.
As a preferred embodiment of the present invention, as shown in fig. 2, a socket portion 602 extending to the socket 401 along the axis is formed at the end of the connecting head 601, the socket portion 602 is inserted into the socket 401, and the outer wall of the socket portion is attached to the inner wall of the socket 401. And in order to improve the sealing performance, at least one sealing ring 603 is nested on the circumferential surface of the socket part 602 in the embodiment.
As a preferred embodiment of the present invention, as shown in fig. 3, a plurality of operation recesses 405 are formed on the circumferential outer wall of the jet body 400, and the operation recesses 405 are uniformly arranged along the circumferential direction of the jet body 400, so that an operator can use a tool to assemble and disassemble the jet body 400.
As a preferred embodiment of the present invention, as shown in fig. 4 to 6, the cutting nozzle 500 includes a flow collecting portion 501, a connecting portion 502 and a jet portion 503 integrally formed along the flow direction of high pressure water, so as to facilitate the manufacturing process, and an external thread is formed on the outer circumferential surface of the connecting portion 502, and the connecting portion 502 is threadedly connected to the mounting hole 404. One end of the flow gathering part 501 close to the socket cavity 401 is an arc surface which is sunken along the jet flow direction of high-pressure water, a plurality of flow gathering holes 504 which are communicated with the socket cavity 401 through the arc surface are formed in the flow gathering part 501, a jet hole 505 is formed in the jet flow part 503, and one end, far away from the arc surface, of each flow gathering hole 504 is gathered at the water inlet end of the jet hole 505. The high-pressure water in the socket cavity 401 is converged at the jet hole 505 by the converging hole 504 and is jetted out from the jet hole 505, so that the jetted water pressure is improved, and the cutting efficiency is improved. And a cross-shaped groove 506 is formed on the end surface of the jet part 503 far away from the socket cavity 401, so that an operator can use a tool to assemble and disassemble the tool.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the protection of the claims of the present invention.
Claims (8)
1. The utility model provides a coal seam is ejector for hydraulic cutting which characterized in that: the jet device comprises a jet device body, wherein a first connecting nozzle and a second connecting nozzle are respectively formed at two axial ends of the jet device body, the jet device body is provided with a socket cavity which is formed inside the jet device body and is communicated with the first connecting nozzle and the second connecting nozzle, the end part of a high-pressure water-through drill rod is connected with the first connecting nozzle and extends into the socket cavity, the second connecting nozzle is connected with a guider or a drill bit, one end of the connected guider or the drill bit extends into the socket cavity, a plurality of assembling holes are formed in the position of a gap between the end part of the high-pressure water-through drill rod extending into the socket cavity and the end part of the guider or the drill bit extending into the socket cavity on the jet device body, the assembling holes are arranged at intervals along the circumferential direction of the jet device body, at least one cutting nozzle is detachably connected onto the jet device body through the corresponding assembling hole, and the assembling hole of the.
2. The ejector for hydraulic cutting of the coal seam as claimed in claim 1, wherein: and the first connecting nozzle and the second connecting nozzle are horn-shaped threaded mouths gradually reduced towards the socket cavity along the axial direction of the jet body.
3. The ejector for hydraulic cutting of the coal seam as claimed in claim 2, wherein: the guider or the drill bit is provided with a connector which is matched with the second connecting nozzle and is in threaded connection with the second connecting nozzle.
4. The ejector for hydraulic cutting of the coal seam as claimed in claim 3, wherein: and a socket part extending to the socket cavity along the axis is formed at the end part of the connector, the socket part is inserted in the socket cavity, and the outer wall of the socket part is attached to the inner wall of the socket cavity.
5. The ejector for hydraulic cutting of the coal seam as claimed in claim 4, wherein: at least one sealing ring is nested on the circumferential surface of the socket part.
6. The ejector for hydraulic cutting of the coal seam as claimed in claim 1, wherein: a plurality of operating depressions are formed on the circumferential outer wall of the jet body, and the operating depressions are uniformly arranged along the circumferential direction of the jet body.
7. The ejector for hydraulic cutting of the coal seam as claimed in claim 1, wherein: the cutting nozzle comprises a flow gathering part, a connecting part and a jet part which are integrally formed along the flow direction of high-pressure water, and the connecting part is in threaded connection with the assembling hole.
8. The ejector for hydraulic cutting of the coal seam as claimed in claim 7, wherein: one end of the flow gathering part close to the socket cavity is a cambered surface which is sunken along the jet flow direction of high-pressure water, a plurality of channels are constructed on the flow gathering part, a flow gathering hole is formed by the cambered surface and the socket cavity, a jet hole and a plurality of flow gathering holes are constructed on the jet flow part, and one end, far away from the cambered surface, of each flow gathering hole is gathered at the water inlet end of the jet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022260126.6U CN213510564U (en) | 2020-10-12 | 2020-10-12 | Jet device for coal seam hydraulic cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022260126.6U CN213510564U (en) | 2020-10-12 | 2020-10-12 | Jet device for coal seam hydraulic cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213510564U true CN213510564U (en) | 2021-06-22 |
Family
ID=76395600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022260126.6U Active CN213510564U (en) | 2020-10-12 | 2020-10-12 | Jet device for coal seam hydraulic cutting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213510564U (en) |
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2020
- 2020-10-12 CN CN202022260126.6U patent/CN213510564U/en active Active
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