CN213510563U - High-pressure water-flowing drill rod for coal seam hydraulic cutting - Google Patents
High-pressure water-flowing drill rod for coal seam hydraulic cutting Download PDFInfo
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- CN213510563U CN213510563U CN202022260035.2U CN202022260035U CN213510563U CN 213510563 U CN213510563 U CN 213510563U CN 202022260035 U CN202022260035 U CN 202022260035U CN 213510563 U CN213510563 U CN 213510563U
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Abstract
The utility model discloses a coal seam water conservancy cutting is with high pressure water drilling rod that leads to, including the pole body, pole body inside has the water guide passageway, and the water guide passageway extends along the length direction of pole body, and the both ends of pole body are drill rod joint link and ejector link respectively, and the pole body passes through drill rod joint link and drill rod articulate, and drill rod joint has the intercommunication passageway with the water guide passageway intercommunication, and the bore of intercommunication passageway is less than the water guide passageway, and the ejector link department of pole body has the throat passageway with the water guide passageway intercommunication, and the bore of throat passageway is less than the water guide passageway. The beneficial effects of the utility model are that, make on the one hand the water under high pressure can not lose before the fracturing, on the other hand reduces the water pressure that the pole body bore, improves its life, and to the continuous fracturing of coal seam at the in-process that creeps into to the coal seam, and then makes the coal seam fracturing operation simple, and working strength is little, and the potential safety hazard is low. The utility model is suitable for a technical field of coal seam fracturing.
Description
Technical Field
The utility model belongs to the technical field of coal seam fracturing, specifically speaking relates to a coal seam water conservancy cutting is with high pressure water drilling rod.
Background
The existing drill rod for drilling the coal seam is solid, or adopts a hollow structure for reducing the gravity of the drill rod, after the coal seam is drilled, the fracturing pipe is stretched into the drilled hole, a high-pressure water pump is used for providing high-pressure water for the fracturing pipe, and the high-pressure water jets into the gap of the coal seam and fractures the coal seam. And after fracturing, taking out the fracturing pipe, further drilling into the deep part of the coal bed by using the drilling machine, replacing the fracturing pipe with the drilling machine again after the drilling is finished, and repeating the steps. Therefore, the coal seam fracturing process is complicated, the operation intensity is high, the labor intensity is high, and the potential safety hazard is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides an in-process at the coal seam operation of creeping into carries out coal seam fracturing's coal seam water conservancy cutting simultaneously and leads to water drilling rod with high pressure.
In order to achieve the above object, the utility model adopts the following technical scheme:
the high-pressure water-flowing drill rod for coal seam hydraulic cutting comprises a rod body, wherein a water guide channel is arranged in the rod body and extends along the length direction of the rod body, a drill rod joint connecting end and a jet device connecting end are respectively arranged at two ends of the rod body, the rod body is connected with the drill rod joint through the drill rod joint connecting end, the drill rod joint is provided with a communicating channel communicated with the water guide channel, the caliber of the communicating channel is smaller than that of the water guide channel, a contracted flow channel communicated with the water guide channel is arranged at the jet device connecting end of the rod body, and the caliber of the contracted flow channel is smaller than that of the water guide channel.
Furthermore, an inserting cavity is formed between the connecting end of the drill rod joint and the water guide channel, and the drill rod joint is provided with a first inserting part which extends into the rod body from the connecting end of the drill rod joint and is assembled in the inserting cavity.
Furthermore, at least one first sealing ring is nested on the outer surface of the first insertion part.
Furthermore, the drill rod joint connecting end is provided with a threaded hole with an inward caliber gradually reduced along the axis of the rod body, the drill rod joint is provided with a first connecting part which is in a circular truncated cone shape and is matched with the threaded hole, and the drill rod joint is connected with the threaded hole through the first connecting part and is fixed with the drill rod joint connecting end.
Further, the ejector connecting end is provided with a second connecting part with the diameter gradually reduced from the axial direction to the outer diameter of the rod body, the contracted flow channel is formed in the second connecting part, and the axes of the contracted flow channel and the second connecting part are overlapped.
Furthermore, a second inserting part extending outwards along the axis of the second connecting part is formed at the small-diameter end of the second connecting part, and the flow contracting channel extends out of the second inserting part from the second connecting part.
Furthermore, at least one second sealing ring is nested on the outer surface of the second insertion part.
Furthermore, the plurality of the rod bodies are connected end to end in sequence.
Further, the caliber of the flow reduction channel is not larger than that of the communication channel.
Further, the diameter of the shaft is phi 42 cm-phi 73 cm.
The utility model discloses owing to adopted foretell structure, it compares with prior art, and the technical progress who gains lies in: two ends of the rod body are respectively connected with a drill rod joint and an ejector, and high-pressure water enters a water guide channel communicated with the drill rod joint from a communication channel of the drill rod joint and is ejected into a seam of a coal seam through an ejector pump to perform fracturing; and because the bore of the water guide channel of the rod body is larger than the communicating channel and the contracted flow channel, when high-pressure water enters the water guide channel, the pressure and the flow speed are reduced, and the pressure and the flow speed flowing to the contracted flow channel are improved, so that on one hand, the pressure of the high-pressure water is not lost before fracturing, on the other hand, the water pressure born by the rod body is reduced, and the service life of the rod body is prolonged.
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 toilet and an ejector;
FIG. 2 is a schematic structural view of an embodiment of the present invention and a tool joint;
FIG. 3 is a cross-sectional view of an axial structure of an embodiment of the present invention in connection with a tool joint;
fig. 4 is an axial structural sectional view of the embodiment of the present invention.
Labeling components: 100-high-pressure water chamber, 200-drill rod joint, 201-high-pressure water chamber connecting end, 202-first connecting part, 203-first inserting part, 204-communicating channel, 205-first sealing ring, 300-high-pressure water-passing drill rod, 301-rod body, 302-water guide channel, 303-inserting cavity, 304-drill rod joint connecting end, 305-second connecting part, 306-second inserting part, 307-contracted flow channel, 308-second sealing ring, 400-ejector, 500-cutting spray head, 600-guider or drill rod, and 700-water inlet pipe joint.
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 a high-pressure water-through drill rod 300 for coal seam hydraulic cutting, as shown in figure 1, the two ends of the high-pressure water-through drill rod 300 are respectively connected with a drill rod joint 200 and an ejector 400, the drill rod joint 200 is connected with a high-pressure water pump 100, the high-pressure water pump 100 is connected with a high-pressure water pump through a water inlet pipe joint 700, as shown in figures 2-4, comprises a rod body 301, blades spirally continuous along the axial direction are constructed on the peripheral wall of the rod body 301, the two ends of the rod body 301 are respectively a drill rod joint connecting end 304 and an ejector 400 connecting end, a water guide channel 302 coinciding with the axis of the rod body 301 is formed in the rod body 301, the water guide channel 302 extends to the drill rod joint connecting end 304 and the ejector 400 connecting end along the length direction of the rod body 301, the rod body 301 is connected with the drill rod joint 200 through the drill rod joint connecting end 304, the rod body 301 is connected with the ejector 400 through the ejector 400 connecting end, and the jet ejector 400 is provided with a cutting nozzle 500. The drill rod joint 200 is provided with a communication channel 204 communicated with the water guide channel 302, the connecting end of the ejector 400 of the rod body 301 is provided with a flow contracting channel 307 communicated with the water guide channel 302, and the calibers of the communication channel 204 and the flow contracting channel 307 are smaller than the calibers of the water guide channel 302. The utility model discloses a theory of operation and advantage lie in: the two ends of the rod body 301 are respectively connected with the drill rod joint 200 and the ejector 400, the drill rod joint 200 is connected with the high-pressure water closet 100, the high-pressure water closet 100 is rotatably connected with the drilling machine, the high-pressure water enters the rod body 301 through the high-pressure water closet 100 through the drill rod joint 200, the high-pressure water enters the water guide channel 302 communicated with the high-pressure water through the communication channel 204 of the drill rod joint 200 and is ejected into a seam of a coal seam through the ejector 400 for fracturing; because the caliber of the water guide channel 302 of the rod body 301 is larger than the caliber of the communication channel 204 and the contracted flow channel 307, when high-pressure water enters the water guide channel 302, the pressure and the flow speed are reduced, and the pressure and the flow speed are improved when the high-pressure water flows to the contracted flow channel 307, so that the pressure of the high-pressure water is not lost before fracturing, the water pressure born by the rod body 301 is reduced, and the service life of the rod body is prolonged; just the utility model discloses to the continuous fracturing of coal seam at the in-process that creeps into to the coal seam, and then make the coal seam fracturing operation simple, operation intensity is little, and the potential safety hazard is low.
As a preferred embodiment of the present invention, as shown in fig. 3, the tool joint 200 has a first connection portion 202, a first insertion portion 203 and a high pressure water connection end 201, the three are integrally formed, an insertion cavity 303 is formed in the shaft 301 and between the tool joint connection end 304 and the water guide channel 302, the first insertion portion 203 extends into the shaft 301 from the tool joint connection end 304 and is assembled in the insertion cavity 303, and in order to seal sufficiently, at least one first sealing ring 205 is nested on the outer surface of the first insertion portion 203, and the number of the first sealing rings 205 in this embodiment is two. The first connecting portion 202 is a circular truncated cone-shaped structure, the drill rod joint connecting end 304 is provided with a threaded hole with an inward caliber gradually reduced along the axis of the rod body 301, the first connecting portion 202 is matched with the threaded hole, and the drill rod joint 200 is fixed with the drill rod joint connecting end 304 through the threaded connection between the first connecting portion 202 and the threaded hole.
As a preferred embodiment of the present invention, as shown in fig. 3 and 4, the connection end of the ejector 400 has a second connection portion 305 whose diameter is gradually reduced along the axial direction of the shaft 301, and the above-mentioned contracted flow channel 307 is formed in the second connection portion 305 and the axes thereof are overlapped. The small-diameter end of the second connecting portion 305 is formed with a second plug-in portion 306 extending outwards along the axis thereof, the contracted flow channel 307 extends out of the second plug-in portion 306 from the second connecting portion 305, and the joint of the contracted flow channel 307 and the water guide channel 302 is in smooth transition. The second connection portion 305 is screwed with the ejector 400, and adopts a structure for improving the shearing resistance of the connection portion, thereby making the connection more compact. And at least one second sealing ring 308 is nested on the outer surface of the first inserting part for sufficient sealing, wherein the number of the second sealing rings 308 is preferably two in the embodiment.
As a preferred embodiment of the present invention, the diameter of the flow contracting channel 307 is not larger than the communicating channel 204, so that the pressure of the fracturing can be fully ensured, the kinetic energy loss of the high-pressure water is avoided, and the maximum water pressure can be ensured to reach 100 MPa.
As a preferred embodiment of the present invention, the diameter of the rod body 301 is phi 42 cm-phi 73cm, and the preferred diameters are phi 42cm, phi 50cm and phi 73cm, and for different rod bodies 301, the drill rod joint 200 can be replaced for use without replacing the whole set of equipment.
As a preferred embodiment of the present invention, according to the depth of the coal seam drilled at one time, one or more shafts 301 may be selected from the number of the shafts 301, when there are a plurality of shafts 301, the shafts 301 are sequentially connected end to end, and the second connecting portion 305 of the previous shaft 301 is screwed with the screw hole of the next shaft 301, and the blades on the connected shafts 301 are continuous and continuous. The connection position of the two rod bodies 301 is in taper threaded connection, the connection strength is high, the anti-shearing capacity is high, the connection of the inner walls of the rod bodies 301 is realized by the connection of the upper contracted flow channel 307 and the lower water guide channel 302, so that high-pressure water is subjected to flow limiting and pressurization at intervals between the rod bodies 301, the situation that the shearing strength of the rod body 301 body is low due to the fact that the high-pressure water flow path is too long is avoided, meanwhile, the fracturing pressure of the high-pressure water is kept in an expected range due to the fact that the pressure boosting is interrupted, the situation that the load of a power source (a high-pressure water pump) is large due to the fact that.
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 (10)
1. The utility model provides a coal seam water conservancy cutting is with high-pressure water-flowing drilling rod, includes the pole body, its characterized in that: the drill rod comprises a rod body and is characterized in that a water guide channel is arranged in the rod body and extends along the length direction of the rod body, a drill rod joint connecting end and an ejector connecting end are respectively arranged at two ends of the rod body, the rod body is connected with a drill rod joint through the drill rod joint connecting end, the drill rod joint is provided with a communicating channel communicated with the water guide channel, the caliber of the communicating channel is smaller than that of the water guide channel, a contracted flow channel communicated with the water guide channel is arranged at the ejector connecting end of the rod body, and the caliber of the contracted flow channel is smaller than that of the.
2. The high-pressure water passing drill rod for hydraulic cutting of the coal seam as claimed in claim 1, wherein: an insertion cavity is formed between the connection end of the drill rod joint and the water guide channel, and the drill rod joint is provided with a first insertion part which extends into the rod body from the connection end of the drill rod joint and is assembled in the insertion cavity.
3. The high-pressure water passing drill rod for hydraulic cutting of the coal seam as claimed in claim 2, wherein: at least one first sealing ring is nested on the outer surface of the first inserting part.
4. The high-pressure water passing drill rod for hydraulic cutting of the coal seam as claimed in claim 1, wherein: the drill rod joint is characterized in that the connecting end of the drill rod joint is provided with a threaded hole with an inward caliber gradually reduced along the axis of the rod body, the drill rod joint is provided with a first connecting part which is in a round table shape and is matched with the threaded hole, and the drill rod joint is fixedly connected with the connecting end of the drill rod joint through the first connecting part and the threaded hole.
5. The high-pressure water passing drill rod for hydraulic cutting of the coal seam as claimed in claim 1, wherein: the ejector connecting end is provided with a second connecting part with the gradually reduced axial outer caliber along the rod body, the contracted flow channel is formed in the second connecting part, and the axes of the contracted flow channel and the second connecting part are overlapped.
6. The high-pressure water passing drill rod for hydraulic cutting of the coal seam as claimed in claim 5, wherein: and a second plug-in part extending outwards along the axis is formed at the small-diameter end of the second connecting part, and the contracted flow channel extends out of the second plug-in part from the second connecting part.
7. The high-pressure water passing drill rod for hydraulic cutting of the coal seam as claimed in claim 6, wherein: at least one second sealing ring is nested on the outer surface of the second inserting part.
8. The high-pressure water passing drill rod for hydraulic cutting of the coal seam as claimed in claim 1, wherein: the pole body is a plurality of, and end to end connection in proper order.
9. The high-pressure water passing drill rod for hydraulic cutting of the coal seam as claimed in claim 1, wherein: the aperture of the flow reduction channel is not larger than that of the communicating channel.
10. The high-pressure water passing drill rod for hydraulic cutting of the coal seam as claimed in claim 1, wherein: the diameter of the shaft is phi 42 cm-phi 73 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022260035.2U CN213510563U (en) | 2020-10-12 | 2020-10-12 | High-pressure water-flowing drill rod for coal seam hydraulic cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022260035.2U CN213510563U (en) | 2020-10-12 | 2020-10-12 | High-pressure water-flowing drill rod for coal seam hydraulic cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213510563U true CN213510563U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022260035.2U Active CN213510563U (en) | 2020-10-12 | 2020-10-12 | High-pressure water-flowing drill rod for coal seam hydraulic cutting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213510563U (en) |
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2020
- 2020-10-12 CN CN202022260035.2U patent/CN213510563U/en active Active
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