CN112211606B - Hydraulic cutting device - Google Patents
Hydraulic cutting device Download PDFInfo
- Publication number
- CN112211606B CN112211606B CN202011085464.9A CN202011085464A CN112211606B CN 112211606 B CN112211606 B CN 112211606B CN 202011085464 A CN202011085464 A CN 202011085464A CN 112211606 B CN112211606 B CN 112211606B
- Authority
- CN
- China
- Prior art keywords
- water
- rod
- drill rod
- pressure water
- drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 205
- 238000005553 drilling Methods 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 24
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 239000003245 coal Substances 0.000 abstract description 31
- 238000004891 communication Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/114—Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a hydraulic cutting device, which comprises a high-pressure water closet, a drill rod joint, a high-pressure water-through drill rod, an ejector and one of a guider or a drill bit which are connected in sequence, wherein a cutting nozzle is arranged on the ejector; the high-pressure water is rotationally connected with the high-pressure water drill rod, the high-pressure water is connected with the water inlet pipe joint, and the water inlet pipe joint is connected with the high-pressure water pump. The invention has high water flow capacity and large flow rate, and provides enough energy for coal bed fracturing; and the coal bed fracturing operation is simple, the operation intensity is small, and the potential safety hazard is low. The invention is suitable for the technical field of coal seam fracturing.
Description
Technical Field
The invention belongs to the technical field of coal seam fracturing, and particularly relates to a hydraulic cutting device.
Background
At present, the commonly used means of the coal bed fracturing mode is 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. Therefore, the process of coal seam fracturing is complex, the operation intensity is high, and the problems of high labor intensity and high potential safety hazard exist in the process of adjusting the fracturing pipe.
Disclosure of Invention
The invention provides a high-pressure water-flow device which has large flow and provides enough energy for coal bed fracturing; and the hydraulic cutting device has the advantages of simple coal bed fracturing operation, low operation intensity and low potential safety hazard.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a kind of hydraulic cutting device, including one kind in high-pressure water closet, drill pipe joint, high-pressure water drilling rod, ejector and director or bit that connect sequentially, the cutting shower nozzle is installed on ejector; the high-pressure water is rotationally connected with the high-pressure water drill rod, the high-pressure water is connected with the water inlet pipe joint, and the water inlet pipe joint is connected with the high-pressure water pump.
Furthermore, the high-pressure water device comprises a switching rod which is rotatably assembled in the main body, a drilling machine switching end of the switching rod and a drilling rod switching end of the switching rod respectively extend out of the main body, the switching rod is provided with a water passing channel communicated with a water containing cavity in the main body, a water inlet pipe joint communicated with the water containing cavity is detachably connected to the main body, and the drilling machine switching end and the drilling rod connecting end of the switching rod are respectively connected with the drilling machine and the hollow drilling rod.
Furthermore, a water stopping unit is assembled between the adapter rod and the main body, and the water containing cavity is formed between the two water stopping units; the two ends of the main body are respectively detachably provided with an assembling seat, and each assembling seat is respectively abutted against the corresponding water stopping unit.
Furthermore, bearings are respectively assembled on the assembly seats, the bearings are sleeved on the adapter rod, and one end of each assembly seat far away from the main body is detachably connected with an end cover used for pressing the bearing on the assembly seat.
Furthermore, the water stopping unit comprises a water stopping sleeve sleeved on the switching rod and abutted to the inner wall of the main body through an outer wall, an outer sealing ring is sleeved on the outer wall of the water stopping sleeve, an assembling cavity is formed in one end face, close to the water containing cavity, of the water stopping sleeve, the water stopping rubber ring is installed in the assembling cavity, the inner wall of the water stopping rubber ring is in contact with the outer wall of the switching rod, a check ring is installed at one end, close to the water containing cavity, of the water stopping sleeve, and the check ring is limited in the main body through a clamp spring installed in the main body.
Furthermore, the high-pressure water-through drill rod comprises a rod body, 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, the plurality of the rod bodies are sequentially connected in an initial position.
Furthermore, the ejector comprises an ejector body, a first connecting nozzle and a second connecting nozzle are respectively formed at two axial ends of the ejector body, the ejector body is provided with a socket cavity which is formed inside the ejector body and is communicated with the first connecting nozzle and the 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 the drill bit extends into the socket cavity, a plurality of assembling holes are formed in 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 the drill bit extending into the socket cavity on the ejector body, the assembling holes are arranged at intervals along the circumferential direction of the ejector body, at least one cutting nozzle is detachably connected to the ejector body through the corresponding assembling hole, and the assembling hole of the unassembled cutting nozzle is plugged.
Furthermore, 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; the end of the flow gathering part close to the socket cavity is an arc surface sunken along the jet flow direction of high-pressure water, a plurality of flow gathering holes communicated with the socket cavity through the arc surface are constructed on the flow gathering part, a jet hole is constructed on 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.
Due to the adoption of the structure, compared with the prior art, the invention has the technical progress that: the drilling machine is connected with the hollow high-pressure water-through drill rod through high-pressure water, and drives the high-pressure water-through drill rod to rotate and drill the coal bed; meanwhile, high-pressure water enters the high-pressure water-through drill rod through high-pressure water and enters the ejector through the high-pressure water-through drill rod, the high-pressure water is ejected out from a cutting sprayer on the ejector and fractures the coal bed at different heights and angles, and the drilling speed of the drilling machine can be controlled according to different depths and specific conditions of the coal bed, so that the coal bed is fully fractured; the invention relates to a rotatable water passing device, which has the advantages that: the pressure of the water flowing is high, the flow is large, and enough energy is provided for coal bed fracturing; in conclusion, the method has the characteristics of simple coal bed fracturing operation, low operation intensity and low potential safety hazard.
Drawings
The accompanying drawings, which 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 principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a cross-sectional view of an axial structure of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an axial structure of an embodiment of the present invention;
FIG. 3 is an exploded view of the structure of an embodiment of the present invention;
fig. 4 is a schematic structural view of a water stopping unit mounted on an adapter rod according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a water stopping unit according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a water stop sleeve according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a water stop rubber ring according to an embodiment of the present invention;
FIG. 8 is a schematic view of an embodiment of the present invention in combination with a tool joint;
FIG. 9 is a cross-sectional view of an axial configuration of an embodiment of the present invention coupled to a tool joint;
FIG. 10 is a cross-sectional view of an axial structure of an embodiment of the present invention;
FIG. 11 is a cross-sectional view of an axial configuration of a fluidic body according to an embodiment of the present invention;
FIG. 12 is a schematic view of the construction of the jet body and drill bit or pilot according to an embodiment of the invention;
FIG. 13 is a schematic structural diagram of a cutting head according to an embodiment of the present invention;
FIG. 14 is a schematic view of the structure of FIG. 4 from another angle;
FIG. 15 is a sectional view of an axial configuration of a cutting tip according to an embodiment of the present invention;
FIG. 16 is a schematic view of a pilot or drill bit according to an embodiment of the present invention.
Labeling components: 100-main body, 101-adapter rod, 102-water stop sleeve, 1021-assembly cavity, 103-water stop rubber ring, 1031-rubber seat, 1032-inner sealing ring, 104-outer sealing ring, 105-retainer ring, 106-snap spring, 107-assembly seat, 108-first bolt, 109-bearing, 110-end cover, 111-end sealing ring, 112-second bolt, 113-water containing cavity, 114-water inlet pipe joint, 115-interface, 116-water channel, 200-drill rod joint, 201-high-pressure water connection end, 202-first connection part, 203-first plug part, 204-communication channel, 205-first sealing ring, 300-high-pressure water through drill rod, 301-shaft, 302-water guide channel, 303-plug cavity, 304-drill rod joint connection end, 305-second connection part, 306-second plug part, 307-converging channel, 308-second sealing ring, 400-fluidic body, 401-socket cavity, 402-first connection nozzle, 403-second connection nozzle, 404-assembly hole, 405-operation recess, 500-cutting nozzle, 501-converging part, 502-connection part, 503-fluidic part, 504-converging hole, 505-fluidic hole, 506-cross groove, 600-guide or drill bit, 601-connector, 602-socket part, 603-third sealing ring.
Detailed Description
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 only for illustrating and explaining the present invention and are not to be considered as limiting the present invention.
The invention discloses a hydraulic cutting device, which comprises a high-pressure water closet, a drill rod joint 200, a high-pressure water drill rod 300, an ejector, a cutting spray head 500 and one of a guider or a drill bit 600 which are connected in sequence as shown in figure 1. The high-pressure water is rotatably connected with the high-pressure water drill pipe 300, the high-pressure water is connected with the water inlet pipe joint 114, and the water inlet pipe joint 114 is connected with the high-pressure water pump. The working principle and the advantages of the invention are as follows: the drilling machine is connected with the drilling machine switching end of the switching rod 101, the hollow high-pressure water-through drill rod 300 is connected with the drill rod switching end of the switching rod 101, and the drilling machine drives the switching rod 101 to drive the high-pressure water-through drill rod 300 to rotate and drill a coal bed; meanwhile, high-pressure water enters the water containing cavity 113 through the water inlet pipe joint 114 and enters the high-pressure water through drill rod 300 through the water containing cavity 113, along with the drilling of the high-pressure water through drill rod 300, the high-pressure water is sprayed out by a cutting spray head 500 on the ejector, the coal bed is fractured at different heights and angles, the drilling speed of the drilling machine can be controlled according to different depths and specific conditions of the coal bed, and further the coal bed is fractured fully; the invention relates to a rotatable water passing device, which has the advantages that: the water flowing pressure is high, the flow rate is large, and enough energy is provided for coal bed fracturing; in conclusion, the method has the characteristics of simple coal seam fracturing operation, low operation intensity and low potential safety hazard.
As a preferred embodiment of the present invention, as shown in fig. 2, the high-pressure water comprises a main body 100 and an adapter rod 101, the main body 100 is a hollow sleeve, the adapter rod 101 is assembled in the main body 100 and rotatably connected to the main body 100, two ends of the adapter rod 101 are a drilling machine adapter end and a drilling rod adapter end respectively, the drilling machine adapter end and the drilling rod adapter end are respectively used for connecting to a drilling machine and a hollow high-pressure water-through drilling rod 300, the drilling machine adapter end and the drilling rod adapter end respectively extend out of two axial ends of the main body 100, a water containing cavity 113 is formed inside the main body 100, a water passage 116 communicated with the water containing cavity 113 is formed in the adapter rod 101, and the water passage 116 is communicated with a hollow portion of the high-pressure water-through drilling rod 300. A water inlet nipple 114 communicating with the water containing chamber 113 is detachably connected to the main body 100 by means of a screw connection.
As a preferred embodiment of the present invention, as shown in fig. 4 to 7, a water stopping unit is assembled between the adapter rod 101 and the main body 100, and a water containing chamber 113 is formed between the two water stopping units. The effect of setting up stagnant water unit is the phenomenon of the emergence leakage after preventing that the water under high pressure from getting into this embodiment to avoid each component parts life-span of this embodiment to shorten, and avoid the water under high pressure to be let out pressure and the fracturing effect causes the influence simultaneously. Wherein, the concrete structure of this embodiment stagnant water unit does: the water stopping unit comprises a water stopping sleeve 102 sleeved on the adapter rod 101, the outer wall of the water stopping sleeve 102 abuts against the inner wall of the main body 100, an annular groove is formed in the outer wall of the water stopping sleeve 102, an outer sealing ring 1034 is sleeved on the water stopping sleeve 102 and assembled in the groove, and the outer sealing ring 1034 is tightly attached to the inner wall of the main body 100; in the embodiment, an assembly cavity 1021 is formed on the end face of the water stop sleeve 102 close to one end of the water containing cavity 113, the water stop rubber ring 103 is installed in the assembly cavity 1021, and the inner wall of the water stop rubber ring 103 is in contact with the outer wall of the adapter rod 101; the outer sealing ring 1034 and the water-stopping rubber ring 103 are used for preventing high-pressure water from leaking from the joint of the water-stopping sleeve 102 and the main body 100 and the joint of the water-stopping sleeve 102 and the adapter rod 101, and simultaneously ensuring that the relative rotation of the adapter rod 101 and the main body 100 is not influenced; the water stopping rubber ring 103 comprises a rubber seat 1031 embedded in the assembly cavity 1021, an inner sealing ring 1032 is embedded between the rubber seat 1031 and the peripheral wall of the assembly cavity 1021, and the inner surface of the rubber seat 1031 is sleeved on the adapter rod 101; a retaining ring 105 is mounted at one end of the water stop 102 adjacent to the water containing cavity 113, the retaining ring 105 being confined within the main body 100 by a circlip 106 mounted within the main body 100. In order to fully seal water and prevent leakage, the water-sealing sleeve 102, the outer sealing ring 1034 and the water-sealing rubber ring 103 are combined into at least two groups, and are sequentially and tightly attached to each other along the axial direction of the adapter rod 101. And the two ends of the main body 100 are respectively provided with an assembling seat 107 in a detachable way through a plurality of first bolts 108, and each assembling seat 107 is respectively abutted against the end surface of the corresponding water stop sleeve 102, so that the assembling seats 107 are matched with the corresponding snap springs 106, and the fixing of the axial position of the water stop unit and the adapter rod 101 is realized.
As a preferred embodiment of the present invention, as shown in fig. 1 and 2, a protrusion extending into the corresponding end of the main body 100 is formed at one end of the mounting seat 107 near the water containing cavity 113, and the protrusion presses against the water stop sleeve 102; a cavity is formed at the other end of the assembling seat 107, a bearing 109 is assembled in the cavity, the bearing 109 is assembled on the adapter rod 101, an end cover 110 is detachably connected to one end of each assembling seat 107 far away from the main body 100 through a plurality of second bolts 112, the end cover 110 is used for pressing the corresponding bearing 109 on the assembling seat 107, and an end sealing ring 111 with an X-shaped section is embedded at the joint of the end cover 110 and the adapter rod 101.
As a preferred embodiment of the present invention, as shown in fig. 4, the water passing channel 116 extends from the position of the adapter rod 101 in the water containing cavity 113 to a rod adapter end along the axial direction of the adapter rod 101, and a plurality of communication holes are formed on the circumferential surface of the adapter rod 101 and at the position of the water containing cavity 113, and each communication hole is respectively communicated with the water passing channel 116 and the water containing cavity 113. The number of the communication holes and the length and caliber of the water passage 116 are selected, and the design is based on the torque resistance of the adapter rod 101, so as to improve the strength of the adapter rod 101 and avoid the deformation or twist-off accidents under the condition of large torque.
As a preferred embodiment of the present invention, as shown in fig. 2 and 3, a port 115 is opened on the main body 100, the port 115 is communicated with the water containing cavity 113, and the water inlet pipe connector 114 is screwed with the port 115, and the water inlet pipe connector 114 is used for connecting with the outlet of the high pressure water pump, so as to provide high pressure cutting water for the present embodiment.
As a preferred embodiment of the present invention, as shown in fig. 8 to 10, a high-pressure water passing drill rod 300 includes a rod 301, blades spirally continuous along an axial direction of the rod 301 are configured on a circumferential wall of the rod 301, a drill rod joint connection end 304 and an ejector connection end are respectively arranged at two ends of the rod 301, a water guide channel 302 coinciding with an axis of the rod 301 is formed in the rod 301, the water guide channel 302 extends to the drill rod joint connection end 304 and the ejector connection end along a length direction of the rod 301, the rod 301 is connected with a drill rod joint 200 through the drill rod joint connection end 304, the rod 301 is connected with an ejector through the ejector connection end, and a cutting nozzle 500 is mounted on the ejector. The drill rod joint 200 is provided with a communication channel 204 communicated with the water guide channel 302, the ejector connecting end 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 working principle and the advantages of the embodiment are as follows: the two ends of the rod body 301 are respectively connected with the drill rod joint 200 and the ejector, 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 pump to be fractured; 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; the coal bed is continuously fractured in the coal bed drilling process, so that the coal bed fracturing operation is simple, the operation strength is low, and the potential safety hazard is low.
As a preferred embodiment of the present invention, as shown in fig. 9, the drill rod joint 200 has a first connection part 202, a first insertion part 203 and a high-pressure water connection end 201, which are integrally formed, an insertion cavity 303 is formed in the shaft 301 between the drill rod joint connection end 304 and the water guide channel 302, the first insertion part 203 extends into the shaft 301 from the drill rod joint connection end 304 and is fitted in the insertion cavity 303, and at least one first sealing ring 205 is nested on the outer surface of the first insertion part 203 for sufficient sealing, and the preferred number of the first sealing rings 205 of 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. 9 and 10, the ejector connecting end has a second connecting portion 305 that is tapered toward the outside diameter in the axial direction of the shaft 301, and the above-mentioned converging flow passage 307 is formed in the second connecting portion 305 with the axes thereof being coincident. 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 to the ejector, and adopts a structure for improving the shearing resistance of the connection portion, thereby making the connection tighter. And at least one second sealing ring 308 is nested on the outer surface of the first plug 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 aperture of the contracted flow channel 307 is not larger than the communication channel 204, so that the fracturing pressure can be fully ensured, the loss of kinetic energy of high-pressure water is avoided, and the maximum water pressure can be ensured to reach 100MPa.
As a preferred embodiment of the present invention, the diameter of the shaft 301 is phi 42 cm-phi 73cm, and the preferred diameters are phi 42cm, phi 50cm, and phi 73cm, and for different shafts 301, the drill pipe joint 200 can be replaced without replacing the whole set of equipment.
As a preferred embodiment of the present invention, the number of the shafts 301 may be one or more according to the depth of the coal seam drilled at one time, and in the case of a plurality of shafts 301, the shafts 301 are sequentially connected at the head, the second connection part 305 of the previous shaft 301 is screwed with the threaded hole of the next shaft 301, and the blades of the connected shafts 301 are continuous and continuous. And the connection part of the two rod bodies 301 is in taper threaded connection, the connection strength is high, the anti-shearing capacity is strong, and the communication of the inner walls of the rod bodies 301 is realized by the communication of the upper contracted flow channel 307 and the lower water guide channel 302, so that the high-pressure water is subjected to flow limiting and pressurization at intervals among the rod bodies 301, the low shearing strength of the rod body 301 body caused by the overlong high-pressure water flow path is avoided, meanwhile, the fracturing pressure of the high-pressure water is kept in an expected range by intermittent pressurization, the large load of a power source (a high-pressure water pump) caused by the overlong rod bodies 301 is avoided, and the damage accident is caused in the high-load operation process.
As a preferred embodiment of the present invention, as shown in fig. 11 and 12, the ejector includes an ejector body 400, a first connection nozzle 402 and a second connection nozzle 403 are formed at both axial ends of the ejector body 400, the ejector body 400 has a socket 401, the socket 401 is formed inside the ejector body 400, and the socket 401 is communicated with the first connection nozzle 402 and the second connection nozzle 403, respectively, the end of a high-pressure water drill pipe 300 is connected with the first connection nozzle 402 and extends into the socket 401, the second connection nozzle 403 is connected with a guide or a drill 600, and one end of the connected guide or drill 600 extends into the socket 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 working principle and the advantages of the embodiment are as follows: as the invention 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, so that the fracturing operation is realized, and the coal seam is gradually fractured from shallow depth to deep depth 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. 1, the first connector 402 and the second connector 403 are each a trumpet-shaped threaded mouth tapering toward the socket 401 in the axial direction of the body 400, and as shown in fig. 16, the guide and the drill each have a connector 601 fitted and screwed to the second connector 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. 11, a socket 602 extending along its axis to the socket 401 is formed at the end of the coupler 601, and the socket 602 is inserted into the socket 401 and has an outer wall fitting the inner wall of the socket 401. And in order to improve the sealing performance, at least one third 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. 12, a plurality of operating recesses 405 are formed on the outer circumferential wall of the jet body 400, and the operating 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. 13 to 15, the cutting torch 500 includes a fluid collecting portion 501, a connecting portion 502 and a fluid jetting portion 503 integrally formed in a flow direction of high pressure water for manufacturing, and the connecting portion 502 has an external thread formed on an outer circumferential surface thereof, and the connecting portion 502 is screw-coupled 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 gathered at the jet hole 505 by the gathering hole 504 and is jetted out from the jet hole 505, so that the jetted water pressure is improved, and the cutting efficiency is further 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 above, 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 claims of the present invention.
Claims (5)
1. A hydraulic cutting device characterized by: the device comprises a high-pressure water closet, a drill rod joint, a high-pressure water-through drill rod, an ejector and a guider or a drill bit which are connected in sequence, wherein a cutting sprayer is arranged on the ejector; the high-pressure water pipe is rotatably connected with the high-pressure water-through drill rod, the high-pressure water pipe is connected with the water inlet pipe joint, the water inlet pipe joint is connected with the high-pressure water pump, the high-pressure water pipe comprises a switching rod which is rotatably assembled in the main body, the switching end of the drilling machine and the switching end of the drill rod respectively extend out of the main body, the switching rod is provided with a water passing channel communicated with the water containing cavity in the main body, the water inlet pipe joint communicated with the water containing cavity is detachably connected to the main body, and the drilling machine switching end and the drill rod connecting end of the switching rod are respectively connected with the drilling machine and the hollow drill rod; the high-pressure water-through drill rod 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, the two ends of the rod body are respectively a drill rod joint connecting end and an ejector connecting end, 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, the ejector connecting end of the rod body is provided with a contracting channel communicated with the water guide channel, and the caliber of the contracting channel is smaller than that of the water guide channel; a water stopping unit is assembled between the adapter rod and the main body, and the water containing cavity is formed between the two water stopping units; assembling seats are detachably installed at two ends of the main body respectively, and the assembling seats are abutted to the corresponding water stopping units respectively; the water stopping unit comprises a water stopping sleeve which is sleeved on the switching rod, the outer wall of the water stopping sleeve is abutted to the inner wall of the main body, an outer sealing ring is sleeved on the outer wall of the water stopping sleeve, an assembling cavity is formed in the end face, close to the water containing cavity, of the water stopping sleeve, the water stopping rubber ring is installed in the assembling cavity, the inner wall of the water stopping rubber ring is in contact with the outer wall of the switching rod, a check ring is installed at one end, close to the water containing cavity, of the water stopping sleeve, and the check ring is limited in the main body through a clamp spring installed in the main body; the water passing channel extends out of a drill rod switching end along the axial direction of the switching rod from the position of the switching rod in the water containing cavity, a plurality of communicating holes are formed in the circumferential surface of the switching rod and the position of the water containing cavity, and each communicating hole is respectively communicated with the water passing channel and the water containing cavity; 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; the drill rod joint is provided with a first connecting part, a first inserting part and a high-pressure water connection end which are integrally formed; the first connecting part is of a round table-shaped structure, a threaded hole with a gradually reduced inner caliber along the axis of the rod body is formed in the connecting end of the drill rod joint, the first connecting part 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 threaded connection of the first connecting part and the threaded hole.
2. A hydraulic cutting device according to claim 1, wherein: and bearings are respectively assembled on the assembling seats, the bearings are sleeved on the adapter rod, and one end of each assembling seat, which is far away from the main body, is detachably connected with an end cover which compresses the bearings on the assembling seats.
3. A hydraulic cutting device as claimed in claim 1, wherein: the rod body is a plurality of, and head is connected in proper order.
4. A hydraulic cutting device according to claim 1, wherein: the jet device comprises a jet device body, a first connecting nozzle and a second connecting nozzle are formed at two axial ends of the jet device body respectively, 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 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 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 to the jet device body through the corresponding assembling hole, and the assembling hole of the unassembled cutting nozzle is blocked through a plug.
5. A hydraulic cutting device according to claim 4, 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; the end of the flow gathering part close to the socket cavity is an arc surface sunken along the jet flow direction of high-pressure water, a plurality of flow gathering holes communicated with the socket cavity through the arc surface are constructed on the flow gathering part, a jet hole is constructed on 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085464.9A CN112211606B (en) | 2020-10-12 | 2020-10-12 | Hydraulic cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085464.9A CN112211606B (en) | 2020-10-12 | 2020-10-12 | Hydraulic cutting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112211606A CN112211606A (en) | 2021-01-12 |
| CN112211606B true CN112211606B (en) | 2023-01-31 |
Family
ID=74053543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011085464.9A Active CN112211606B (en) | 2020-10-12 | 2020-10-12 | Hydraulic cutting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112211606B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943172B (en) * | 2021-03-31 | 2022-07-08 | 内蒙古科技大学 | High-voltage electric pulse hydraulic fracturing method for coal rock mass and guide crack opening device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7434633B2 (en) * | 2006-09-18 | 2008-10-14 | Baker Hughes Incorporated | Radially expandable downhole fluid jet cutting tool |
| CN202108414U (en) * | 2011-05-17 | 2012-01-11 | 重庆创泰矿山机械有限公司 | High-pressure post-positioned water swivel |
| CN103306657B (en) * | 2013-06-28 | 2016-01-20 | 陕西煤业化工技术研究院有限责任公司 | A kind of coal seam cutting release is anti-reflection and slot holding device and method |
| CN203978313U (en) * | 2014-08-18 | 2014-12-03 | 中煤科工集团重庆研究院有限公司 | Water under high pressure conveyer |
| CN105089499B (en) * | 2015-09-11 | 2017-10-03 | 中国平煤神马能源化工集团有限责任公司 | Underground coal mine waterpower sprays tree-shaped drilling guide device and guidance method |
| CN110617044B (en) * | 2019-07-23 | 2020-09-29 | 重庆大学 | Ultrahigh-pressure water jet slotting system and using method thereof |
| CN111088992B (en) * | 2020-01-13 | 2024-04-30 | 中煤科工集团沈阳研究院有限公司 | Ball throwing type high-pressure hydraulic drilling and cutting integrated permeability increasing device and permeability increasing method |
-
2020
- 2020-10-12 CN CN202011085464.9A patent/CN112211606B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112211606A (en) | 2021-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101532391B (en) | In-hole drilling tool integrating drilling, slotting and punching coal seam and using method thereof | |
| CN102619469B (en) | Device for hole drilling, seam cutting and pressure relief of coal seam | |
| CN108625804B (en) | Rotational flow flushing tool with controllable rotational speed | |
| CN112211606B (en) | Hydraulic cutting device | |
| CN110645038B (en) | Drilling and hole washing integrated device for coal mine gas extraction | |
| CN202520224U (en) | Coal seam drilling, seam cutting and pressure releasing device | |
| CN201391331Y (en) | Integral in-hole drilling tool for drilling slotting punched hole of coal seam | |
| CN107401378B (en) | Drill bit | |
| CN111287660A (en) | Impact rotary jet drilling tool | |
| CN112343513A (en) | Mechanical and hydraulic integrated reaming bit for coal bed and reaming process | |
| CN113882855B (en) | Plug-in type high-low voltage accurate switching slotting machine, slotting device and use method | |
| CN213510565U (en) | Hydraulic cutting device | |
| RU170648U1 (en) | Device for cleaning tubing | |
| CN213205645U (en) | High-pressure water closet for coal seam hydraulic cutting | |
| CN111287693B (en) | Well flushing tool with coiled tubing capable of realizing positive and negative circulation | |
| CN213510564U (en) | Jet device for coal seam hydraulic cutting | |
| CN216477319U (en) | Plug-in type high-low pressure accurate switching slotting device and slotting device | |
| CN208280958U (en) | A kind of shield machine soil storehouse mud cake abolishes device | |
| CN207934865U (en) | Jack rabbit component and drifting device adopting | |
| CN103195362B (en) | Integrated window sidetrack drilling tool | |
| CN110552663A (en) | Flexible rotary jet cleaning tool | |
| CN213510563U (en) | High-pressure water-flowing drill rod for coal seam hydraulic cutting | |
| CN112761555B (en) | Well dredging, well flushing and sand flushing integrated downhole operation tool and operation method | |
| CN210918920U (en) | Self-rotating dynamic stabilization short joint | |
| CN110159212B (en) | Anti-impact pressure relief drill rod self-rotating joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |