CN110748304A - Multi-edge double-channel multi-stage pushing deslagging drill rod and use method thereof - Google Patents
Multi-edge double-channel multi-stage pushing deslagging drill rod and use method thereof Download PDFInfo
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- CN110748304A CN110748304A CN201911252161.9A CN201911252161A CN110748304A CN 110748304 A CN110748304 A CN 110748304A CN 201911252161 A CN201911252161 A CN 201911252161A CN 110748304 A CN110748304 A CN 110748304A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005553 drilling Methods 0.000 claims abstract description 60
- 239000002893 slag Substances 0.000 claims abstract description 52
- 238000004401 flow injection analysis Methods 0.000 claims abstract description 32
- 238000002347 injection Methods 0.000 claims description 52
- 239000007924 injection Substances 0.000 claims description 52
- 239000012530 fluid Substances 0.000 claims description 28
- 238000009826 distribution Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 11
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 17
- 238000005253 cladding Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/18—Pipes provided with plural fluid passages
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a multi-edge double-channel multistage pushing deslagging drill rod which comprises a rod body, a flow injection pipe, fixing devices, a flow outlet pipe and a flow injection pipe plug, wherein the rod body is of a hollow cylindrical tubular structure, three operation corrugated surfaces are arranged on the outer side surface of the rod body, the flow injection pipe is embedded in the rod body and is connected with the inner surface of the side wall of the rod body through a plurality of fixing devices, the flow outlet pipe is uniformly distributed around the axis of the rod body, two ends of the flow outlet pipe are respectively connected with the rod body and the flow injection pipe, the flow injection pipe is communicated with the outer side of the rod body through the flow outlet pipe, and the flow injection. The use method comprises two steps of equipment assembly, drilling operation and the like. The invention greatly improves the slag discharge capacity of the drill rod, reduces the probability of drill sticking, drill holding or drill breaking during the operation of the drill rod, has the advantages of good slag discharge effect, deep drilling, less drilling residue, good heat dissipation effect and the like, is suitable for drilling of soft coal seams and high-stress coal seams, and is worthy of popularization and application in coal mine enterprises.
Description
Technical Field
The invention relates to a multi-edge double-channel multi-stage pushing deslagging drill rod and a using method thereof, belonging to the technical field of drilling mechanical equipment.
Background
The gas is one of main factors threatening the safety production of the coal mine, and the extraction of the coal seam gas through a drill hole is a main method for controlling the gas in the coal mine. In recent years, with the large-scale mining of shallow coal mine resources, coal mines are gradually developed to deep coal seams, coal seams in areas with complex geological conditions and three-soft coal seam resources. The hydrogeological conditions of these areas are typically represented by: the method has the advantages of large ground stress, low coal body strength, high gas pressure, large gas content and high complexity and uncertainty of regional geological conditions, and brings new challenges to coal mine gas control. In the drilling process, due to the large ground stress, the low coal strength and the insufficient slag discharge capacity of a drill rod and a drilling tool, the phenomena of drill rod clamping, drill holding and drill breaking occur sometimes, the problems of shallow drilling depth, low drilling efficiency, high drilling cost, low pore-forming rate and the like exist in the drilling process, and the improvement of the slag discharge capacity of the drill rod and the drilling tool is a main way for solving the problems under the condition that the geological conditions cannot be changed.
In the early 21 st century, the drill rod commonly used in the well is a smooth surface drill rod, but due to poor slag discharge effect and easiness in heating, the drill rod is gradually replaced in coal seam drilling in recent years. At present, the drilling rod that the coal mine underground coal seam of domestic creeps into and adopts mainly includes: a grooved drill rod, a convex rib drill rod and a triangular drill rod. Compared with the traditional smooth surface drill rod, the three-edged drill rod has certain improvement on slag discharge, but the phenomena of drill sticking and drill breakage still occur in the drilling process of soft coal beds, high gas pressure coal beds and places with abnormal ground stress. The three-edged drill rod and the smooth-faced drill rod both belong to a single-beam fluid slag discharge drill rod, namely, a beam of pressurized fluid is injected along the interior of the drill rod at an orifice, and the fluid enters the bottom of the hole from the drill rod through a drill bit outflow port, carries drilling slag and discharges the drilling slag out of the hole through an annular slag discharge channel between the outer wall of the rod body and the wall of the drilled hole. The slag discharging principle has the defect that the slag content in a unit length drill hole increases gradually from the hole bottom to the orifice, but the slag discharging capacity of the single beam in-vitro slag discharging decreases gradually from the hole bottom to the orifice. The triangular drill rod is characterized in that the cross section shape of the drill rod body is changed from the circular shape of the smooth drill rod to be nearly triangular relative to the smooth drill rod, the vortex effect generated by each edge in the rotation of the triangular drill rod is utilized, the slag discharging principle is added with the effect of vortex loosening on the basis of single-beam fluid slag discharging, the slag discharging capability is relatively improved, the slag discharging effect is relatively improved, but the real breakthrough is not realized on the slag discharging principle, the phenomena of drill jamming and drill embracing still exist in the application of a soft coal bed, a high gas pressure coal bed and an abnormal ground stress section, and the slag discharging effect still needs to be further improved.
Therefore, in order to better solve the problems of drill rod jamming, drill embracing and drill breaking caused by weak slag discharge capability of the drill rod, breakthrough or improvement needs to be made on the slag discharge principle of the drill rod, and the drill rod with strong slag discharge capability is developed.
Disclosure of Invention
The invention provides a multi-edge double-channel multi-stage pushing deslagging drill rod which can obviously improve the deslagging capability of the drill rod based on a multi-beam fluid multi-stage pushing deslagging principle by aiming at the problem of weak deslagging capability of the drill rod and combining the defects of a three-edge drill rod and a smooth drill rod in practical application.
In order to realize the purpose, the invention is realized by the following technical scheme:
a multi-edge dual-channel multistage pushing deslagging drill rod comprises a rod body, a flow injection pipe, a fixing device, flow outlet pipes and a flow injection pipe plug, wherein the rod body is of a hollow cylindrical tubular structure, the front end face of the rod body is provided with a rod body connecting male port, the rear end face of the rod body connecting female port, the outer side face of the rod body is provided with three operation surfaces which are uniformly distributed around the axis of the rod body and are parallel to the axis of the rod body, the flow injection pipes are embedded in the rod body and are coaxially distributed with the rod body and are connected with the inner surface of the side wall of the rod body through a plurality of fixing devices, a flow guide channel is formed between the rod body and the flow injection pipes, the front end face of each flow injection pipe is provided with a plug port, the distance between the front end face of the rod body is 0-50 mm, the rear end face of each flow outlet pipe is provided with 3-6 sleeve ports, the flow outlet pipes are uniformly distributed around the axis of the rod body, the two ends of each, the outer side surface of the corresponding rod body is provided with an outflow port, the injection pipe is communicated with the outer side of the rod body through an outflow pipe, and the plug of the injection pipe is embedded in the rod body and is coated outside the front end surface of the injection pipe.
Furthermore, the inner diameter of the rod body is 1.3 to 2.5 times of the outer diameter of the injection pipe, and the axial sections of the rod body connecting male port of the front end surface and the rod body connecting female port of the rear end surface of the rod body, the inserting ports of the front end surface and the rear end surface of the injection pipe and the sleeve port are all in an isosceles trapezoid structure.
Furthermore, the width of the operation corrugated surface is 1/4-3/4 of the outer diameter of the rod body, and the outer side surface of the rod body and the operation corrugated surface form a tubular structure with a triangular cross section.
Further, among the stupefied face of operation, establish at least one on the body of rod between the stupefied face of two adjacent operations and encircle the body of rod axis and be the guiding gutter of helical structure distribution, guiding gutter width is 1.1-3 times of the biggest diameter of egress opening, and the egress opening is located and distributes the position between two adjacent guiding gutters along body of rod axis direction.
Furthermore, the axis of the outflow pipe and the axis of the injection pipe form an included angle of 30-60 degrees, the outflow port of the outflow pipe corresponding to the outer side surface of the rod body is positioned at the operation corrugated surface, and the axis of the outflow port is intersected with the axis of the operation corrugated surface.
Furthermore, fixing device is at least two, along body of rod axis direction equipartition, fixing device is including location inner ring, location outer loop and bearing post, location inner ring, location outer loop be with annotate the cyclic annular structure of flow tube coaxial distribution, connect through at least three bearing posts between location inner ring, the location outer loop, and bearing post axis and location inner ring, location outer loop axis vertical distribution, wherein the cladding of location inner ring is outside annotating the flow tube, and the location outer loop offsets with body of rod lateral wall internal surface.
Furthermore, the positioning inner ring, the positioning outer ring, the rod body and the injection pipe are in sliding connection through at least three sliding grooves which are uniformly distributed around the axis of the rod body, at least one positioning pin is arranged on each sliding groove, the rod body and the injection pipe are respectively connected with the positioning inner ring and the positioning outer ring through the positioning pins, and the bearing column is any one of at least two-stage elastic telescopic rods and helical springs.
A use method of a multi-edge double-channel multi-stage pushing deslagging drill rod comprises the following steps:
s1, assembling equipment, namely, firstly, assembling a rod body, a flow injection pipe, a fixing device, a flow outlet pipe and a flow injection pipe plug according to use requirements to complete the assembly of the drill rods, then, connecting a plurality of assembled drill rods according to drilling operation requirements, firstly, removing each flow injection pipe plug, and then embedding a rod body connecting male port of a next-stage drill rod into a next-stage rod body connecting female port for connection; the plug-in interface of the injection pipe of the next-stage drill rod is embedded in the sleeve opening of the next-stage injection pipe for connection; finally, the rod body positioned at the forefront is connected with the drill bit through the rod body connecting male port, and the rod body positioned at the rearmost is connected with the drilling machine through the rod body on one hand, and is communicated with an external high-pressure fluid supply system through the rod body connecting female port on the other hand, so that the assembly of the drilling machine is completed;
s2, drilling operation is carried out, after the step S1 is completed, the drilling operation can be carried out, and during the drilling operation, on one hand, the drilling machine drives the rod body to drive the drill bit to rotate so as to carry out the drilling operation; on the other hand, high-pressure liquid of an external high-pressure fluid supply system is directly injected into the injection flow pipe and conveyed to the position of the drill bit along the injection flow pipe on the one hand, and on the other hand, the high-pressure liquid is conveyed to the position of the drill bit through the position between the rod body and the injection flow pipe, so that the temperature reduction of the position of the drill bit and the flushing and chip removal of chips are realized; meanwhile, when external high-pressure fluid flows along the injection pipe, part of the high-pressure fluid in the injection pipe in each stage of rod body flows along the outflow pipe and is directly conveyed to a position between the rod body and the drill hole from the outflow port, the rod body is cooled, and chips between the contact surface of the drill rod and the drill hole are washed and removed; after the drilling slag enters the slag discharge channel, because the high-speed rotation of the drill rod and the axes of the multi-stage outflow pipes form a certain included angle with the axis of the rod body, and cone fluid injection surfaces are formed when high-pressure fluid in the main flow pipe enters the slag discharge channel, the injection direction is towards the outside of the hole from the bottom of the hole, a plurality of drill rods in the drilling hole can form a plurality of cone fluid injection surfaces, multi-stage pushing on the drilling slag is formed in the slag discharge channel, the drilling slag is accelerated to be discharged from the bottom of the hole, and the purpose of slag discharge is achieved.
Compared with the prior art, the invention has the beneficial effects that: the invention adopts the combination of the double-flow-passage double-fluid multistage pushing slag discharging principle, the multi-edge rotating and raising lower drill cuttings and the eddy current loosening, makes a great breakthrough on the slag discharging principle of the drill rod, greatly improves the slag discharging capacity of the drill rod, reduces the probability of drill sticking, drill holding or drill breaking during the operation of the drill rod, has the advantages of good slag discharging effect, deep drilling, less drilling residues, good heat dissipation effect and the like, is suitable for the drilling of soft coal seams and high-stress coal seams, and is worthy of popularization and application in coal mine enterprises.
Drawings
FIG. 1 is a schematic structural view of the present invention without a guiding groove;
FIG. 2 is a schematic view of the structure of the present invention with a diversion trench;
FIG. 3 is a schematic cross-sectional view of a portion of the present invention;
FIG. 4 is a flow chart illustrating a method of using the present invention.
Detailed Description
The invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the description of the embodiments is only for illustrating the present invention and should not be taken as limiting the invention as detailed in the claims.
As shown in figures 1-3, a multi-edge double-channel multistage pushing deslagging drill rod comprises a rod body 1, a flow injection pipe 2, a fixing device 3, a flow outlet pipe 4 and a flow injection pipe plug 5, wherein the rod body 1 is a hollow cylindrical tubular structure, the front end surface of the rod body is provided with a rod body connecting male port 101, the rear end surface is provided with a rod body connecting female port 102, the outer side surface is provided with three operation ridges 6, the operation ridges 6 are uniformly distributed around the axis of the rod body 1 and are parallel to the axis of the rod body 1, the flow injection pipe 2 is embedded in the rod body 1 and is coaxially distributed with the rod body 1 and is connected with the inner surface of the side wall of the rod body 1 through a plurality of fixing devices 3, a flow guide channel 7 is formed between the rod body 1 and the flow injection pipe 2, the front end surface of the flow injection pipe 2 is provided with an insertion port 21, the distance between the front end surface of the rod body 1 is 0-50 mm, the rear end surface is provided with, encircle 1 axis equipartition of body of rod, its both ends respectively with the body of rod 1, annotate the flow pipe 2 and be connected, and establish the inflow entrance 41 on the 2 pipe walls of notes flow pipe that outflow pipe 4 corresponds, the egress opening 42 is established to 1 lateral surface of the body of rod that corresponds, and the flow pipe 2 is through outflow pipe 4 and the 1 outside intercommunication of the body of rod, and the flow pipe stopcock 5 of annotating inlays in the body of rod 1 and the cladding is outside the 2 front end of flow pipe.
Wherein, the internal diameter of the rod body 1 is 1.3-2.5 times of the external diameter of the injection pipe 2, and the axial sections of the rod body connecting male port 101 and the rod body connecting female port 102 of the front end surface and the rear end surface of the rod body 1, the inserting port 21 and the sleeve port 22 of the front end surface and the rear end surface of the injection pipe 2 are all isosceles trapezoid structures.
It is emphasized that the width of the operation corrugated surface 6 is 1/4-3/4 of the outer diameter of the rod body 1, and the outer side surface of the rod body 1 and the operation corrugated surface 6 form a tubular structure with a triangular cross section.
Further, among the stupefied face of operation 6, establish at least one on the body of rod 1 between the stupefied face of two adjacent operations and encircle body of rod 1 axis and be the guiding gutter 8 that helical configuration distributes, guiding gutter 8 width is 1.1-3 times of the biggest diameter of egress opening 42, and egress opening 42 is located and distributes the position between two adjacent guiding gutters 8 along body of rod 1 axis direction.
Meanwhile, the axis of the outlet pipe 4 and the axis of the injection pipe 2 form an included angle of 30-60 degrees, the outlet 42 of the outlet pipe 4 corresponding to the outer side surface of the rod body 1 is positioned at the operation corrugated surface 6, and the axis of the outlet 42 is intersected with the axis of the operation corrugated surface 6.
It should be noted that, fixing device 3 is at least two, along 1 axial direction equipartition of the body of rod, fixing device 3 is including location inner ring 31, location outer ring 32 and bearing post 33, location inner ring 31, location outer ring 32 be with annotate the cyclic annular structure of the coaxial distribution of flow pipe 2, and location inner ring 31, location outer ring 32 are connected through at least three bearing post 33 within a definite time, and bear post 33 axis and location inner ring 31, location outer ring 32 axis vertical distribution, wherein location inner ring 31 cladding is outside annotating flow pipe 2, and location outer ring 32 offsets with body of rod 1 lateral wall internal surface.
Further preferably, the positioning inner ring 31, the positioning outer ring 32, the rod body 1 and the injection pipe 2 are connected in a sliding manner through at least three sliding grooves 34 uniformly distributed around the axis of the rod body 1, at least one positioning pin 35 is arranged on each sliding groove 34, the rod body 1 and the injection pipe 2 are respectively connected with the positioning inner ring 31 and the positioning outer ring 32 through the positioning pins 35, and the bearing column 33 is any one of at least two-stage elastic telescopic rods and helical springs.
As shown in FIG. 4, the use method of the multi-edge double-channel multi-stage pushing deslagging drill rod comprises the following steps:
s1, assembling equipment, namely, firstly, assembling a rod body, a flow injection pipe, a fixing device, a flow outlet pipe and a flow injection pipe plug according to use requirements to complete the assembly of the drill rods, then, connecting a plurality of assembled drill rods according to drilling operation requirements, firstly, removing each flow injection pipe plug, and then embedding a rod body connecting male port of a next-stage drill rod into a next-stage rod body connecting female port for connection; the plug-in interface of the injection pipe of the next-stage drill rod is embedded in the sleeve opening of the next-stage injection pipe for connection; finally, the rod body positioned at the forefront is connected with the drill bit through the rod body connecting male port, and the rod body positioned at the rearmost is connected with the drilling machine through the rod body on one hand, and is communicated with an external high-pressure fluid supply system through the rod body connecting female port on the other hand, so that the assembly of the drilling machine is completed;
s2, drilling operation is carried out, after the step S1 is completed, the drilling operation can be carried out, and during the drilling operation, on one hand, the drilling machine drives the rod body to drive the drill bit to rotate so as to carry out the drilling operation; on the other hand, high-pressure liquid of an external high-pressure fluid supply system is directly injected into the injection flow pipe and conveyed to the position of the drill bit along the injection flow pipe on the one hand, and on the other hand, the high-pressure liquid is conveyed to the position of the drill bit through the position between the rod body and the injection flow pipe, so that the temperature reduction of the position of the drill bit and the flushing and chip removal of chips are realized; meanwhile, when external high-pressure fluid flows along the injection pipe, part of the high-pressure fluid in the injection pipe in each stage of rod body flows along the outflow pipe and is directly conveyed to a position between the rod body and the drill hole from the outflow port, the rod body is cooled, and chips between the contact surface of the drill rod and the drill hole are washed and removed; after the drilling slag enters the slag discharge channel, because the high-speed rotation of the drill rod and the axes of the multi-stage outflow pipes form a certain included angle with the axis of the rod body, and cone fluid injection surfaces are formed when high-pressure fluid in the main flow pipe enters the slag discharge channel, the injection direction is towards the outside of the hole from the bottom of the hole, a plurality of drill rods in the drilling hole can form a plurality of cone fluid injection surfaces, multi-stage pushing on the drilling slag is formed in the slag discharge channel, the drilling slag is accelerated to be discharged from the bottom of the hole, and the purpose of slag discharge is achieved.
Compared with the prior art, the invention has the beneficial effects that: the invention adopts the combination of the double-flow-passage double-fluid multistage pushing slag discharging principle, the multi-edge rotating and raising lower drill cuttings and the eddy current loosening, makes a great breakthrough on the slag discharging principle of the drill rod, greatly improves the slag discharging capacity of the drill rod, reduces the probability of drill sticking, drill holding or drill breaking during the operation of the drill rod, has the advantages of good slag discharging effect, deep drilling, less drilling residues, good heat dissipation effect and the like, is suitable for the drilling of soft coal seams and high-stress coal seams, and is worthy of popularization and application in coal mine enterprises.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a sediment drilling rod is arranged in multistage promotion of many arriss binary channels which characterized in that: the multi-edge double-channel multistage pushing deslagging drill rod comprises a rod body, flow injection tubes, fixing devices, flow outlet tubes and flow injection tube plugs, wherein the rod body is of a hollow cylindrical tubular structure, the front end face of the rod body is provided with a male port connected with the rod body, the rear end face of the rod body is provided with a female port connected with the rod body, the outer side face of the rod body is provided with three operation corrugated surfaces, the operation corrugated surfaces are uniformly distributed around the axis of the rod body and are parallel to the axis of the rod body, the flow injection tubes are embedded in the rod body and are coaxially distributed with the rod body and are connected with the inner surface of the side wall of the rod body through a plurality of fixing devices, a flow guide channel is formed between the rod body and the flow injection tubes, the front end face of each flow injection tube is provided with an insertion port, the distance between the front end face of the rod body is 0-50 mm, the rear end face of each flow outlet tube is provided with a sleeve port, the, and the pipe wall of the injection pipe corresponding to the outflow pipe is provided with an inflow port, the outer side surface of the corresponding rod body is provided with an outflow port, the injection pipe is communicated with the outer side of the rod body through the outflow pipe, and the pipe plug of the injection pipe is embedded in the rod body and is coated outside the front end surface of the injection pipe.
2. The multi-edge double-channel multi-stage pushing deslagging drill rod as claimed in claim 1, wherein: the inner diameter of the rod body is 1.3-2.5 times of the outer diameter of the flow injection pipe, and the axial sections of the rod body connecting male port and the rod body connecting female port of the front end surface and the rear end surface of the rod body, the inserting ports and the sleeve ports of the front end surface and the rear end surface of the flow injection pipe are all in an isosceles trapezoid structure.
3. The multi-edge double-channel multi-stage pushing deslagging drill rod as claimed in claim 1, wherein: the width of the operation corrugated surface is 1/4-3/4 of the outer diameter of the rod body, and the outer side surface of the rod body and the operation corrugated surface form a tubular structure with a triangular cross section.
4. The multi-edge double-channel multi-stage pushing deslagging drill rod as claimed in claim 1, wherein: among the stupefied face of operation, establish at least one on the body of rod between the stupefied face of two adjacent operations and encircle the body of rod axis and be the guiding gutter of helical structure distribution, guiding gutter width is 1.1-3 times of the biggest diameter of egress opening, and the egress opening is located and distributes the position between two adjacent guiding gutters along body of rod axis direction.
5. The multi-edge double-channel multi-stage pushing deslagging drill rod as claimed in claim 1, wherein: the axial line of the outflow pipe and the axial line of the injection pipe form an included angle of 30-60 degrees, the outflow port of the outflow pipe corresponding to the outer side surface of the rod body is positioned at the operation corrugated surface, and the axial line of the outflow port is intersected with the axial line of the operation corrugated surface.
6. The multi-edge double-channel multi-stage pushing deslagging drill rod as claimed in claim 1, wherein: the fixing device comprises a positioning inner ring, a positioning outer ring and bearing columns, wherein the positioning inner ring and the positioning outer ring are of annular structures coaxially distributed with the injection pipe, the positioning inner ring and the positioning outer ring are connected through at least three bearing columns, the axes of the bearing columns are vertically distributed with the axes of the positioning inner ring and the positioning outer ring, the positioning inner ring is coated outside the injection pipe, and the positioning outer ring is abutted to the inner surface of the side wall of the rod body.
7. The multi-edge double-channel multi-stage pushing deslagging drill rod as claimed in claim 6, wherein: the positioning inner ring, the positioning outer ring, the rod body and the injection pipe are in sliding connection through at least three sliding grooves which are uniformly distributed around the axis of the rod body, at least one positioning pin is arranged on each sliding groove, the rod body and the injection pipe are respectively connected with the positioning inner ring and the positioning outer ring through the positioning pins, and the bearing column is any one of at least two stages of elastic telescopic rods and helical springs.
8. A use method of a multi-edge double-channel multi-stage pushing deslagging drill rod is characterized in that: the use method of the multi-edge double-channel multi-stage pushing deslagging drill rod comprises the following steps:
s1, assembling equipment, namely, firstly, assembling a rod body, a flow injection pipe, a fixing device, a flow outlet pipe and a flow injection pipe plug according to use requirements to complete the assembly of the drill rods, then, connecting a plurality of assembled drill rods according to drilling operation requirements, firstly, removing each flow injection pipe plug, and then embedding a rod body connecting male port of a next-stage drill rod into a next-stage rod body connecting female port for connection; the plug-in interface of the injection pipe of the next-stage drill rod is embedded in the sleeve opening of the next-stage injection pipe for connection; finally, the rod body positioned at the forefront is connected with the drill bit through the rod body connecting male port, and the rod body positioned at the rearmost is connected with the drilling machine through the rod body on one hand, and is communicated with an external high-pressure fluid supply system through the rod body connecting female port on the other hand, so that the assembly of the drilling machine is completed;
s2, drilling operation is carried out, after the step S1 is completed, the drilling operation can be carried out, and during the drilling operation, on one hand, the drilling machine drives the rod body to drive the drill bit to rotate so as to carry out the drilling operation; on the other hand, high-pressure liquid of an external high-pressure fluid supply system is directly injected into the injection flow pipe and conveyed to the position of the drill bit along the injection flow pipe on the one hand, and on the other hand, the high-pressure liquid is conveyed to the position of the drill bit through the position between the rod body and the injection flow pipe, so that the temperature reduction of the position of the drill bit and the flushing and chip removal of chips are realized; meanwhile, when external high-pressure fluid flows along the injection pipe, part of the high-pressure fluid in the injection pipe in each stage of rod body flows along the outflow pipe and is directly conveyed to a position between the rod body and the drill hole from the outflow port, the rod body is cooled, and chips between the contact surface of the drill rod and the drill hole are washed and removed; after the drilling slag enters the slag discharge channel, because the high-speed rotation of the drill rod and the axes of the multi-stage outflow pipes form a certain included angle with the axis of the rod body, and cone fluid injection surfaces are formed when high-pressure fluid in the main flow pipe enters the slag discharge channel, the injection direction is towards the outside of the hole from the bottom of the hole, a plurality of drill rods in the drilling hole can form a plurality of cone fluid injection surfaces, multi-stage pushing on the drilling slag is formed in the slag discharge channel, the drilling slag is accelerated to be discharged from the bottom of the hole, and the purpose of slag discharge is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911252161.9A CN110748304A (en) | 2019-12-09 | 2019-12-09 | Multi-edge double-channel multi-stage pushing deslagging drill rod and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911252161.9A CN110748304A (en) | 2019-12-09 | 2019-12-09 | Multi-edge double-channel multi-stage pushing deslagging drill rod and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110748304A true CN110748304A (en) | 2020-02-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377113A (en) * | 2020-11-29 | 2021-02-19 | 重庆梅安森科技股份有限公司 | Internal cooling drill rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377113A (en) * | 2020-11-29 | 2021-02-19 | 重庆梅安森科技股份有限公司 | Internal cooling drill rod |
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