US20230407706A1 - Microwave rock-breaking drilling device - Google Patents
Microwave rock-breaking drilling device Download PDFInfo
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- US20230407706A1 US20230407706A1 US18/250,279 US202118250279A US2023407706A1 US 20230407706 A1 US20230407706 A1 US 20230407706A1 US 202118250279 A US202118250279 A US 202118250279A US 2023407706 A1 US2023407706 A1 US 2023407706A1
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- rock
- jetting
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- 238000005553 drilling Methods 0.000 title claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 122
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- 239000011435 rock Substances 0.000 description 63
- 230000009471 action Effects 0.000 description 16
- 239000000243 solution Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
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- 238000009527 percussion Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002311 subsequent effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/14—Drilling by use of heat, e.g. flame drilling
- E21B7/15—Drilling by use of heat, e.g. flame drilling of electrically generated heat
-
- 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
- E21B7/00—Special methods or apparatus for drilling
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/14—Drilling by use of heat, e.g. flame drilling
-
- 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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- 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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- 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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
- E21B21/011—Dust eliminating or dust removing while drilling
- E21B21/013—Dust eliminating or dust removing while drilling by liquids
Definitions
- the disclosure relates to the technical field of drilling, in particular to a microwave rock-breaking drilling device, specifically a drilling device for breaking the rock with the aid of the microwave softening the rock.
- Drilling is the process of drilling the stratum into a borehole from the ground by using mechanical equipment or manpower. Drilling is usually used in the exploration or development of oil, natural gas and other liquid and gaseous minerals for drilling boreholes, and large-diameter water supply wells and other projects, and drilling is widely used in national economic construction. At present, the commonly used drilling methods are divided into spudder drilling and rotary drilling.
- the spudder drilling is also known as percussion drilling wherein the steel wire rope and the drill bit are driven by the power driving device to generate the up-and-down impact to achieve the rock-breaking effect, but this method has the disadvantages of low drilling speed and low efficiency, etc., and cannot adapt to the drilling requirements for deep underground and complex strata.
- the working principle of rotary drilling is to rotate the drill bit under a certain axial pressure (drilling pressure) to cut or crush the rock into debris, which can substantially improve the drilling efficiency and adapt to various complex conditions of the stratum below the well when compared with the percussion drilling method, and the rotary drilling has become the current mainstream drilling method, but the disadvantages of the rotary drilling are that when the rock hardness is high, the rock breaking speed will largely depend on the hardness of the material of the drill bit itself, and the drilling equipment lacks economic competitiveness due to the cutterhead wear when breaking the rock with high hardness, or the drilling equipment is not fully productive due to the increased rock hardness and the increased amounts of maintenance.
- the technical problem to be solved by the present invention is to provide a microwave rock-breaking drilling device, which can complete stirring and injection operations at the same time, and has the advantages of convenient operation, high glue filling efficiency, and the like.
- the beneficial effects of the present technical solution are:
- the microwave generating assembly is used to apply the microwave action to the rock, which changes the rock temperature field to soften the rock, thus to reduce the strength of the rock, reduce the wear of the drill bit, and improve the efficiency of rock breaking.
- the effect of the mud, dust, etc. on the microwave emitting hole can be effectively removed by the water-jetting cleaning system, which can reduce the temperature of the drill bit, simultaneously enhance the wave absorption capacity of the rock, increase the effect of the microwave action, improve the efficiency, and reduce the wear of drilling tools.
- a cross section of the drill bit body is circular, a plurality of the cutterheads are provided, the plurality of the cutterheads are provided on the drill bit body along a circumference direction at equal intervals, the cutting tooth is provided on the cutterhead;
- a plurality of the microwave emitting holes are provided, the plurality of the microwave emitting holes are provided on the drill bit body along the circumference direction at equal intervals, a single microwave emitting hole is located between two adjacent cutterheads;
- a plurality of the water jetting hole are provided, the plurality of the water jetting holes are provided on the drill bit body along the circumference direction at equal intervals, a single water jetting hole is located between two adjacent cutterheads.
- a plurality of the cutterhead are provided which can improve the drilling efficiency; a plurality of the microwave emitting hole are provided which can improve the softening efficiency; a plurality of the water jetting hole are provided which can improve the cleaning and cooling efficiency.
- a distance between the microwave emitting hole and a center of circle of the cross section of the drill bit body is greater than a distance between the water jetting hole and the center of circle of the cross section of the drill bit body.
- the microwave emitting hole is further away from the center, and the water jetting hole is closer to the center, the structure herein can further improve the cleaning and cooling effect of the water jetting hole.
- three cutterheads, three microwave emitting holes, and three water jetting holes are respectively provided.
- the microwave generating assembly further comprises a microwave source, a waveguide, a circulator, a water load, and a microwave emitting rod;
- the microwave source is connected with the circulator through the waveguide, the circulator is connected with the microwave emitting rod through the waveguide, the microwave emitting rod is connected with the microwave emitting hole; the water load is connected with the circulator.
- a microwave is emitted through the microwave source, the waveguide, the circulator, the water load, the microwave emitting rod, and other equipment.
- the microwave source, the circulator, and the water load are integrated into a microwave generating device, the microwave emitting rod is located on the microwave generating assembly, and the microwave generating device and the microwave emitting rod are connected through the waveguide.
- the beneficial effects of using the above solution are:
- the microwave source, the circulator, and the water load are integrated to form an independent microwave generating device, which makes each part of the present device modular.
- the microwave emitting rod between the microwave generating device and the microwave emitting rod comprises an inner conductor, an outer conductor, and a microwave emitting head, the outer conductor is coaxially sleeved on an outer side of the inner conductor, and the microwave emitting head is located at one end farther from the waveguide;
- a glass fiber reinforced plastic is arranged between the microwave emitting head and the microwave emitting hole.
- the beneficial effects of using the above solution are: The microwave emitting head on the microwave emitting rod is isolated and protected by the glass fiber reinforced plastic.
- the water-jetting and dust-removing assembly further comprises a water tank, a water pressure controller, a flow meter, an adapter, and a water pipe;
- the water tank is connected with the water pressure controller through the water pipe, the water pressure controller is connected with the flow meter through the water pipe, the flow meter is connected with the adapter through the water pipe, and the adapter is connected with the water jetting hole.
- Spray water is provided through the above assemblies to realize the cleaning and cooling, etc. functions.
- the water tank, the water pressure controller, the flow meter, and the adapter are integrated into a water-jetting and dust-removing device, and the water-jetting and dust-removing device is connected with the water jetting hole through the water pipe.
- the beneficial effects of using the above solution are:
- the water tank, the water pressure controller, the flow meter, and the adapter are integrated to form an independent water-jetting and dust-removing device, which makes each part of the present device modular.
- the integrated drill bit assembly further comprises a drill rod, the drill bit body, the cutterhead, and the cutting tooth are arranged on the drill rod and are located at a lower end of the drill rod; the drill rod is arranged in a drilling well through a drilling support.
- the beneficial effects of using the above solution are:
- the drill bit body, the cutterhead, and the cutting tooth are integrated through the drill rod to form an independent integrated drill bit assembly, which makes each part of the present device modular.
- FIG. 1 is an overall schematic diagram of a microwave rock-breaking drilling device of the present disclosure.
- FIG. 2 is a schematic diagram of the drill bit body in a microwave rock-breaking drilling device of the present disclosure.
- FIG. 3 is a top view of the drill bit body in a microwave rock-breaking drilling device of the present disclosure.
- FIG. 4 is a cross-sectional view of the drill bit body in a microwave rock-breaking drilling device of the present disclosure.
- FIG. 5 is a schematic diagram of the microwave generating assembly in a microwave rock-breaking drilling device of the present disclosure.
- FIG. 6 is a schematic diagram of the water-jetting and dust-removing assembly in a microwave rock-breaking drilling device of the present disclosure.
- orientation or positional relationships indicated by the terms “center”, “top”, “bottom”, “front”, “rear”, “left”, “right”, etc. are based on orientation or positional relationships shown in the drawings, and are intended only to facilitate and simplify the description of the disclosure, and do not indicate or imply that the device or the assembly referred to must have a particular orientation and be constructed and operated in the particular orientation, therefore are not to be construed as a limitation of the disclosure.
- first and second are used for descriptive purposes only, and are not to be construed as indicating or implying the relative importance.
- the terms “mount”, “connect”, “connected” are to be understood in a broad sense, for example, the term “connected” may be “fixedly connected”, “detachably connected”, “integrally connected”, “mechanically connected”, “electrically connected”, “directly connected”, “indirectly connected through an intermediary”, or “internally connected of two assemblies”.
- the assembly may be directly on the another assembly or there may be other assemblies between the assembly and the another assembly.
- the assembly When an assembly is said to be “connected” to another assembly, the assembly may be directly connected with the another assembly or there may be other assemblies between the assembly and the another assembly.
- the specific meaning of the above terms of the present disclosure can be understood in specific conditions.
- the two mainstream drilling methods in the industry are the spudder drilling and the rotary drilling, although these two drilling methods can both achieve the basic drilling functions, both of the two drilling methods have bottlenecks that are difficult to break through to a certain extent, which leads to the problems that high drilling costs and low drilling efficiency, etc.
- the microwave action generates heat through the intense friction between the molecules of the acted object, so that the overall temperature of the acted object increases, and the heating rate is high so that the rock is softened, and the microwave action also has the advantages of body heating, selective heating, no secondary pollution, etc., so that the microwave action is expected to be used in the engineering rock-breaking field to break the bottleneck of traditional mechanical rock breaking, and has been proved to be technically and economically feasible in the field. Therefore, a drilling principle and device based on microwave rock breaking is proposed, which can reduce the wear of the drill bit to reduce the drilling cost and improve the drilling efficiency.
- the present disclosure is based on microwave to improve the drilling device in the prior art.
- the present disclosure provides a microwave rock-breaking drilling device, which comprises an integrated drill bit assembly 1 , a microwave generating assembly 2 , and a water-jetting and dust-removing assembly 3 .
- the integrated drill bit assembly 1 mainly undertakes the drilling work
- a function of the microwave generating assembly 2 is to provide the microwave to soften the rock
- the water-jetting and dust-removing assembly 3 is used to remove the rock debris produced during the drilling process.
- the integrated drill bit assembly 1 comprises a drill bit body 101 , a cutterhead 102 , and a cutting tooth 103 , the cutterhead 102 and the cutting tooth 103 are set on the drill bit body 101 ; specifically, the drill bit body 101 is a PDC drill body; the microwave generating assembly 2 comprises a microwave emitting hole 201 , the microwave emitting hole 201 is located on the drill bit body 101 and is communicated with outside; the water-jetting and dust-removing assembly 3 comprises a water jetting hole 301 , the water jetting hole 301 is located on the drill bit body 101 and is communicated with the outside.
- the prior art has problems that high wear of drill bit, high drilling costs and low drilling working efficiency, etc., in which one important influencing factor is the excessive strength of the rock. How to reduce the strength of the rock and solve the subsequent effects caused by the high strength of the rock is the key to solve the above problems.
- the present disclosure is based on the above technical solution, makes use of the different wave absorption capacity of different minerals, so that the temperature increases rapidly under the action of microwave, and the temperature gradient is generated, and the rock fracture grows and develops, and in high temperature the minerals of the rock are melted or have chemical reactions to achieve the purpose of rock softening. While rotating the drilling rig to break the rock, assisted by the microwave action, by cutting the softened rock after softening the hard rock, the purpose of improving the rate of rock breaking and reducing the mechanical wear can be simultaneously achieved.
- the microwave generating assembly 2 when the hard rock drilling is encountered, using the microwave generating assembly 2 to apply the microwave action to the rock, which changes the rock temperature field to soften the rock, thus reducing the strength of the rock, reducing the wear of the drill bit, and improving the efficiency of rock breaking.
- the effect of the mud and dust on the microwave emitting hole 201 can be effectively solved by the water-jetting cleaning system, which can reduce the temperature of the drill bit, and simultaneously enhance the wave absorption capacity of the rock, increase the effect of the microwave action, improve the efficiency and reduce the wear of drilling tools.
- a cross section of the drill bit body 101 is circular, a plurality of the cutterhead 102 are provided, the plurality of the cutterheads 102 are provided on the drill bit body 101 along a circumference direction at equal intervals, the cutting tooth 103 is provided on the cutterhead 102 ; a plurality of the microwave emitting hole 201 are provided, the plurality of the microwave emitting holes 201 are provided on the drill bit body 101 along the circumference direction at equal intervals, a single microwave emitting hole 201 is located between two adjacent cutterheads 102 ; a plurality of the water jetting hole 301 are provided, the plurality of the water jetting holes 301 are provided on the drill bit body 101 along the circumference direction at equal intervals, a single water jetting hole 301 is located between two adjacent cutterheads 102 .
- the cutterhead 102 , the microwave emitting hole 201 , and the water jetting hole 301 are all provided on the cross section of the drill bit body 101 in a centrosymmetric manner, with a symmetrical center being a center of the circle of the cross section.
- a plurality of the cutterhead 102 are provided, which can improve a drilling efficiency; a plurality of the microwave emitting hole 201 are provided, which can improve a softening efficiency; a plurality of the water jetting hole 301 are provided, which can improve a cleaning and cooling efficiency.
- a distance between the microwave emitting hole 201 and the center of the circle of the cross section of the drill bit body 101 is greater than a distance between the water jetting hole 301 and the center of the circle of the cross section of the drill bit body 101 .
- the microwave emitting hole 201 is further away from the center, and the water jetting hole 301 is closer to the center.
- a circularly smooth connecting line connecting the plurality of the microwave emitting holes 201 can form a closed circle, and similarly, a circularly smooth connecting line connecting the plurality of the water jetting holes 301 can also form a closed circle.
- the circle formed by the plurality of the microwave emitting holes 201 and the circle formed by the plurality of the water jetting holes 301 are concentric circles, and the circle formed by the plurality of the microwave emitting holes 201 is outside the circle formed by the plurality of the water jetting holes 301 .
- the water jetting hole 301 is located more centrally, which can further improve the cleaning and cooling effect of the water jetting hole 301 .
- the column will impact on the rock and then splashes of water appear in all directions, which can better clean out rock debris accumulated at a central axis of the drill bit body 101 .
- three cutterheads 102 three microwave emitting holes 201 , and three water jetting holes 301 are respectively provided, which has an advantage of reasonable structure, while taking into account the cleaning and cooling effect.
- the microwave generating assembly 2 further comprises a microwave source 202 , a waveguide 203 , a circulator 204 , a water load 205 , and a microwave emitting rod 206 .
- the microwave source 202 is connected with the circulator 204 through the waveguide 203
- the circulator 204 is connected with the microwave emitting rod 206 through the waveguide 203
- the microwave emitting rod 206 is connected with the microwave emitting hole 201
- the water load 205 is connected with the circulator 204 .
- a microwave is emitted through the microwave source 202 , the waveguide 203 , the circulator 204 , the water load 205 , the microwave emitting rod 206 , and other equipment.
- the microwave emitting rod 206 between a microwave generating device and the microwave emitting rod 206 comprises an inner conductor, an outer conductor, and a microwave emitting head, the outer conductor is coaxially sleeved on an outer side of the inner conductor, and the microwave emitting head is located at one end farther from the waveguide 203 .
- a glass fiber reinforced plastic 207 is arranged between the microwave emitting head and the microwave emitting hole 201 , and the glass fiber reinforced plastic 207 is a quartz structure.
- the microwave emitting head on the microwave emitting rod 206 is isolated and protected by the glass fiber reinforced plastic 207 ; at the same time, the quartz material has wave-transmitting characteristics to ensure the effectiveness of microwave emitting.
- the water-jetting and dust-removing assembly 3 further comprises a water tank 302 , a water pressure controller 303 , a flow meter 304 , an adapter 305 , and a water pipe 306 ;
- the water tank 302 is connected with the water pressure controller 303 through the water pipe 306
- the water pressure controller 303 is connected with the flow meter 304 through the water pipe 306
- the flow meter 304 is connected with the adapter 305 through the water pipe 306
- the adapter 305 is connected with the water jetting hole 301 .
- a jetty high-pressure water column is provided through the above assemblies to realize the cleaning function, cooling function, etc.
- the integrated drill bit assembly 1 , the microwave generating assembly 2 , and the water-jetting and dust-removing assembly 3 in the present device are all modular.
- the microwave source 202 , the circulator 204 , and the water load 205 are integrated into the microwave generating device, the microwave emitting rod 206 is located on the microwave generating assembly 2 , and the microwave generating device and the microwave emitting rod 206 are connected through the waveguide 203 .
- the microwave source 202 , the circulator 204 , and the water load 205 are integrated to form an independent microwave generating device, which makes each part of the present device modular.
- the water tank 302 , the water pressure controller 303 , the flow meter 304 , and the adapter 305 are integrated into a water-jetting and dust-removing device, and the water-jetting and dust-removing device is connected with the water jetting hole 301 through the water pipe 306 .
- the water tank 302 , the water pressure controller 303 , the flow meter 304 , and the adapter 305 are integrated to form an independent water-jetting and dust-removing device, which makes each part of the present device modular.
- the integrated drill bit assembly 1 further comprises a drill rod 104 , the drill bit body 101 , the cutterhead 102 , and the cutting tooth 103 are arranged on the drill rod 104 and are located at a lower end of the drill rod 104 ; the drill rod 104 is arranged in a drilling well through a drilling support 4 .
- the drill bit body 101 , the cutterhead 102 and the cutting tooth 103 are integrated through the drill rod 104 to form an independent integrated drill bit assembly 1 , which makes each part of the present device modular.
- the microwave rock-breaking drilling device in the present disclosure comprises the integrated drill bit assembly 1 , the microwave generating assembly 2 , and the water-jetting and dust-removing assembly 3 .
- three cutterheads 102 are uniformly arranged on the drill bit
- the microwave emitting hole 201 and the water jetting hole 301 are uniformly arranged in a gap between the cutterheads 102
- the waveguide 203 and the water pipe 306 are arranged inside the drill bit
- the microwave generating device and the water-jetting and dust-removing device are connected with the outside of the drill bit through pipes.
- the microwave generating assembly 2 comprises an external basic microwave equipment, which is composed of the microwave source 202 , the waveguide 203 , the circulator 204 , the water load 205 , and the microwave emitting rod 206 .
- One end of the microwave source 202 is connected with the waveguide 203 , and the waveguide 203 transmits the microwave to the water load 205 and the circulator 204 , and one end of the circulator 204 is connected with the microwave emitting rod 206 to emit the microwave to act on the rock.
- the microwave source 202 is composed of a magnetron; the microwave emitting rod 206 is composed of the inner conductor, the outer conductor, and the microwave emitting head. The microwave is led out from the inner conductor and is led out from the microwave emitting head to act on the rock; a material of the microwave emitting head is a wave-transmitting material such as quartz, etc.
- the microwave rock-breaking drilling device in the present disclosure can reasonably use its functions according to the hardness of the rock in the drilling area.
- the device can directly break the rock by only the mechanical cutting action of the cutterhead 102 of the drill bit;
- the microwave generating device can be turned on to soften the hard rock by microwave heating, while the rock breaking drilling operation can be performed together with the mechanical cutting action of the drilling tools;
- the drill bit operation can be stopped, the microwave emitting device can be turned on, and the microwave action can be performed on the hard rock to quickly reduce the mechanical properties of the rock, and then the drill tools can be used to break the rock.
- the water-jetting and dust-removing device comprises the water tank 302 , the water pressure controller 303 , the flow meter 304 , and the water pipe 306 .
- the water tank 302 is connected with the water pressure controller 303 through the water pipe 306
- the water pressure controller 303 is connected with the flow meter 304 through the water pipe 306 , a water flow pressure and a flow can be controlled through an indication display of the flow meter 304 .
- the water-jetting and dust-removing device can be turned on to remove dust and reduce temperature, at the same time, an ability of absorbing wave of rock can be enhanced and an effect of microwave action can be increased.
- the present disclosure provides a microwave rock-breaking drilling device, which comprises the integrated drill bit assembly 1 , the microwave generating device, and the water-jetting and dust-removing device;
- the microwave generating device is mainly composed of the microwave source 202 , the waveguide 203 , the water load 205 , the circulator 204 , and the microwave emitting rod 206 .
- the microwave generated by the microwave generating device is used to act on the hard rock, which changes the mechanical properties of the rock, and plays the role of softening the rock and assisting rock breaking;
- the water-jetting and dust-removing device is composed of the water tank 302 , the water pressure controller 303 , the flow meter 304 , and the water pipe 306 .
- the water-jetting and dust-removing device has the functions of removing dust and cooling, enhancing the wave absorption ability of the rock, and increasing the effect of the microwave action.
- the process of deep rock drilling and crushing due to the high hardness of the rock, it is easy to cause serious wear of the drill bit blades, thus reducing the operation efficiency and increasing the drilling costs. Therefore, it is urgent to upgrade and reform the traditional drilling equipment.
- the microwave-assisted rock breaking device using the advantages of the body heating, no heat transfer medium, fast heating, and high efficiency of the microwave action, the strength of the rock is weakened when the device acts on the hard rock, which can greatly improve the rock breaking efficiency, reduce the equipment wear, and reduce the drilling costs.
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Abstract
A microwave rock-breaking drilling device includes an integrated drill bit assembly, a microwave generating assembly, and a water-jetting and dust-removing assembly, the integrated drill bit assembly comprises a drill bit body, a cutterhead, and a cutting tooth, the cutterhead and the cutting tooth are provided on the drill bit body; the microwave generating assembly comprises a microwave emitting hole, the microwave emitting hole is located on the drill bit body and is communicated with outside; the water-jetting and dust-removing assembly comprises a water jetting hole, the water jetting hole is located on the drill bit body and is communicated with outside.
Description
- The disclosure relates to the technical field of drilling, in particular to a microwave rock-breaking drilling device, specifically a drilling device for breaking the rock with the aid of the microwave softening the rock.
- Drilling is the process of drilling the stratum into a borehole from the ground by using mechanical equipment or manpower. Drilling is usually used in the exploration or development of oil, natural gas and other liquid and gaseous minerals for drilling boreholes, and large-diameter water supply wells and other projects, and drilling is widely used in national economic construction. At present, the commonly used drilling methods are divided into spudder drilling and rotary drilling.
- The spudder drilling is also known as percussion drilling wherein the steel wire rope and the drill bit are driven by the power driving device to generate the up-and-down impact to achieve the rock-breaking effect, but this method has the disadvantages of low drilling speed and low efficiency, etc., and cannot adapt to the drilling requirements for deep underground and complex strata. The working principle of rotary drilling is to rotate the drill bit under a certain axial pressure (drilling pressure) to cut or crush the rock into debris, which can substantially improve the drilling efficiency and adapt to various complex conditions of the stratum below the well when compared with the percussion drilling method, and the rotary drilling has become the current mainstream drilling method, but the disadvantages of the rotary drilling are that when the rock hardness is high, the rock breaking speed will largely depend on the hardness of the material of the drill bit itself, and the drilling equipment lacks economic competitiveness due to the cutterhead wear when breaking the rock with high hardness, or the drilling equipment is not fully productive due to the increased rock hardness and the increased amounts of maintenance.
- Both of the industry's mainstream drilling methods have bottlenecks that are difficult to break through to a certain extent, which leads to the problems that high drilling costs and low drilling efficiency, etc.
- For the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a microwave rock-breaking drilling device, which can complete stirring and injection operations at the same time, and has the advantages of convenient operation, high glue filling efficiency, and the like.
- The technical solution of the present disclosure to solve the above technical problem is as follows:
-
- A microwave rock-breaking drilling device, which comprises:
- An integrated drill bit assembly, the integrated drill bit assembly comprises a drill bit body, a cutterhead, and a cutting tooth, the cutterhead and the cutting tooth are provided on the drill bit body;
- A microwave generating assembly, the microwave generating assembly comprises a microwave emitting hole, the microwave emitting hole is located on the drill bit body and is communicated with outside;
- A water-jetting and dust-removing assembly, the water-jetting and dust-removing assembly comprises a water jetting hole, the water jetting hole is located on the drill bit body and is communicated with the outside.
- Compared with the prior art, the beneficial effects of the present technical solution are: On one aspect, when the hard rock drilling is encountered, the microwave generating assembly is used to apply the microwave action to the rock, which changes the rock temperature field to soften the rock, thus to reduce the strength of the rock, reduce the wear of the drill bit, and improve the efficiency of rock breaking. On the other aspect, the effect of the mud, dust, etc. on the microwave emitting hole can be effectively removed by the water-jetting cleaning system, which can reduce the temperature of the drill bit, simultaneously enhance the wave absorption capacity of the rock, increase the effect of the microwave action, improve the efficiency, and reduce the wear of drilling tools.
- Further, a cross section of the drill bit body is circular, a plurality of the cutterheads are provided, the plurality of the cutterheads are provided on the drill bit body along a circumference direction at equal intervals, the cutting tooth is provided on the cutterhead;
- A plurality of the microwave emitting holes are provided, the plurality of the microwave emitting holes are provided on the drill bit body along the circumference direction at equal intervals, a single microwave emitting hole is located between two adjacent cutterheads;
- A plurality of the water jetting hole are provided, the plurality of the water jetting holes are provided on the drill bit body along the circumference direction at equal intervals, a single water jetting hole is located between two adjacent cutterheads.
- The beneficial effects of using the above solution are: a plurality of the cutterhead are provided which can improve the drilling efficiency; a plurality of the microwave emitting hole are provided which can improve the softening efficiency; a plurality of the water jetting hole are provided which can improve the cleaning and cooling efficiency.
- Further, a distance between the microwave emitting hole and a center of circle of the cross section of the drill bit body is greater than a distance between the water jetting hole and the center of circle of the cross section of the drill bit body.
- The beneficial effects of using the above solution are: Briefly, the microwave emitting hole is further away from the center, and the water jetting hole is closer to the center, the structure herein can further improve the cleaning and cooling effect of the water jetting hole.
- Further, three cutterheads, three microwave emitting holes, and three water jetting holes are respectively provided.
- The beneficial effects of using the above solution are: It has an advantage of reasonable structure, while takes into account the cleaning and cooling effect.
- Further, the microwave generating assembly further comprises a microwave source, a waveguide, a circulator, a water load, and a microwave emitting rod;
- The microwave source is connected with the circulator through the waveguide, the circulator is connected with the microwave emitting rod through the waveguide, the microwave emitting rod is connected with the microwave emitting hole; the water load is connected with the circulator.
- The beneficial effects of using the above solution are: A microwave is emitted through the microwave source, the waveguide, the circulator, the water load, the microwave emitting rod, and other equipment.
- Further, the microwave source, the circulator, and the water load are integrated into a microwave generating device, the microwave emitting rod is located on the microwave generating assembly, and the microwave generating device and the microwave emitting rod are connected through the waveguide.
- The beneficial effects of using the above solution are: The microwave source, the circulator, and the water load are integrated to form an independent microwave generating device, which makes each part of the present device modular.
- Further, the microwave emitting rod between the microwave generating device and the microwave emitting rod comprises an inner conductor, an outer conductor, and a microwave emitting head, the outer conductor is coaxially sleeved on an outer side of the inner conductor, and the microwave emitting head is located at one end farther from the waveguide;
- A glass fiber reinforced plastic is arranged between the microwave emitting head and the microwave emitting hole.
- The beneficial effects of using the above solution are: The microwave emitting head on the microwave emitting rod is isolated and protected by the glass fiber reinforced plastic.
- Further, the water-jetting and dust-removing assembly further comprises a water tank, a water pressure controller, a flow meter, an adapter, and a water pipe;
- The water tank is connected with the water pressure controller through the water pipe, the water pressure controller is connected with the flow meter through the water pipe, the flow meter is connected with the adapter through the water pipe, and the adapter is connected with the water jetting hole.
- The beneficial effects of using the above solution are: Spray water is provided through the above assemblies to realize the cleaning and cooling, etc. functions.
- Further, the water tank, the water pressure controller, the flow meter, and the adapter are integrated into a water-jetting and dust-removing device, and the water-jetting and dust-removing device is connected with the water jetting hole through the water pipe.
- The beneficial effects of using the above solution are: The water tank, the water pressure controller, the flow meter, and the adapter are integrated to form an independent water-jetting and dust-removing device, which makes each part of the present device modular.
- Further, the integrated drill bit assembly further comprises a drill rod, the drill bit body, the cutterhead, and the cutting tooth are arranged on the drill rod and are located at a lower end of the drill rod; the drill rod is arranged in a drilling well through a drilling support.
- The beneficial effects of using the above solution are: The drill bit body, the cutterhead, and the cutting tooth are integrated through the drill rod to form an independent integrated drill bit assembly, which makes each part of the present device modular.
-
FIG. 1 is an overall schematic diagram of a microwave rock-breaking drilling device of the present disclosure. -
FIG. 2 is a schematic diagram of the drill bit body in a microwave rock-breaking drilling device of the present disclosure. -
FIG. 3 is a top view of the drill bit body in a microwave rock-breaking drilling device of the present disclosure. -
FIG. 4 is a cross-sectional view of the drill bit body in a microwave rock-breaking drilling device of the present disclosure. -
FIG. 5 is a schematic diagram of the microwave generating assembly in a microwave rock-breaking drilling device of the present disclosure. -
FIG. 6 is a schematic diagram of the water-jetting and dust-removing assembly in a microwave rock-breaking drilling device of the present disclosure. - In
FIGS. 1-6 , the list of assemblies represented by each label is as follows: -
- 1. integrated drill bit assembly, 2. microwave generating assembly, 3. water-jetting and dust-removing assembly, 4. drilling support;
- 101. drill bit body, 102. cutterhead, 103. cutting tooth, 104. drill rod;
- 201. microwave emitting hole, 202. microwave source, 203. waveguide, 204. circulator, 205. water load, 206. microwave emitting rod, 207. glass fiber reinforced plastic;
- 301. water jetting hole, 302. water tank, 303. water pressure controller, 304. flow meter, 305, adapter, 306. water pipe.
- In order to make the purposes, technical solutions and advantages of the present disclosure clearer and more explicit, embodiments and drawings are given below to further illustrate the present disclosure. It is to be understood that the embodiments described herein are merely illustrative of the present disclosure and are not intended to be limiting.
- In the description of the present disclosure, it is to be understood that the orientation or positional relationships indicated by the terms “center”, “top”, “bottom”, “front”, “rear”, “left”, “right”, etc. are based on orientation or positional relationships shown in the drawings, and are intended only to facilitate and simplify the description of the disclosure, and do not indicate or imply that the device or the assembly referred to must have a particular orientation and be constructed and operated in the particular orientation, therefore are not to be construed as a limitation of the disclosure. Furthermore, the terms “first” and “second” are used for descriptive purposes only, and are not to be construed as indicating or implying the relative importance.
- In the description of the disclosure, it is to be noted that, unless otherwise expressly specified and limited, the terms “mount”, “connect”, “connected” are to be understood in a broad sense, for example, the term “connected” may be “fixedly connected”, “detachably connected”, “integrally connected”, “mechanically connected”, “electrically connected”, “directly connected”, “indirectly connected through an intermediary”, or “internally connected of two assemblies”. When an assembly is said to be “fixed to” or “set at” another assembly, the assembly may be directly on the another assembly or there may be other assemblies between the assembly and the another assembly. When an assembly is said to be “connected” to another assembly, the assembly may be directly connected with the another assembly or there may be other assemblies between the assembly and the another assembly. For those ordinary skilled in the art, the specific meaning of the above terms of the present disclosure can be understood in specific conditions.
- In the prior art, the two mainstream drilling methods in the industry are the spudder drilling and the rotary drilling, although these two drilling methods can both achieve the basic drilling functions, both of the two drilling methods have bottlenecks that are difficult to break through to a certain extent, which leads to the problems that high drilling costs and low drilling efficiency, etc.
- The microwave action generates heat through the intense friction between the molecules of the acted object, so that the overall temperature of the acted object increases, and the heating rate is high so that the rock is softened, and the microwave action also has the advantages of body heating, selective heating, no secondary pollution, etc., so that the microwave action is expected to be used in the engineering rock-breaking field to break the bottleneck of traditional mechanical rock breaking, and has been proved to be technically and economically feasible in the field. Therefore, a drilling principle and device based on microwave rock breaking is proposed, which can reduce the wear of the drill bit to reduce the drilling cost and improve the drilling efficiency. The present disclosure is based on microwave to improve the drilling device in the prior art.
- As shown in
FIG. 1 , to solve the problems that high drilling costs and low drilling efficiency, etc. in the prior art, the present disclosure provides a microwave rock-breaking drilling device, which comprises an integrateddrill bit assembly 1, amicrowave generating assembly 2, and a water-jetting and dust-removingassembly 3. In the device, the integrateddrill bit assembly 1 mainly undertakes the drilling work, a function of themicrowave generating assembly 2 is to provide the microwave to soften the rock, and the water-jetting and dust-removingassembly 3 is used to remove the rock debris produced during the drilling process. - The integrated
drill bit assembly 1 comprises adrill bit body 101, acutterhead 102, and a cuttingtooth 103, thecutterhead 102 and the cuttingtooth 103 are set on thedrill bit body 101; specifically, thedrill bit body 101 is a PDC drill body; themicrowave generating assembly 2 comprises amicrowave emitting hole 201, themicrowave emitting hole 201 is located on thedrill bit body 101 and is communicated with outside; the water-jetting and dust-removingassembly 3 comprises awater jetting hole 301, thewater jetting hole 301 is located on thedrill bit body 101 and is communicated with the outside. - The prior art has problems that high wear of drill bit, high drilling costs and low drilling working efficiency, etc., in which one important influencing factor is the excessive strength of the rock. How to reduce the strength of the rock and solve the subsequent effects caused by the high strength of the rock is the key to solve the above problems.
- The present disclosure is based on the above technical solution, makes use of the different wave absorption capacity of different minerals, so that the temperature increases rapidly under the action of microwave, and the temperature gradient is generated, and the rock fracture grows and develops, and in high temperature the minerals of the rock are melted or have chemical reactions to achieve the purpose of rock softening. While rotating the drilling rig to break the rock, assisted by the microwave action, by cutting the softened rock after softening the hard rock, the purpose of improving the rate of rock breaking and reducing the mechanical wear can be simultaneously achieved.
- On the one aspect, when the hard rock drilling is encountered, using the
microwave generating assembly 2 to apply the microwave action to the rock, which changes the rock temperature field to soften the rock, thus reducing the strength of the rock, reducing the wear of the drill bit, and improving the efficiency of rock breaking. On the other aspect, the effect of the mud and dust on themicrowave emitting hole 201 can be effectively solved by the water-jetting cleaning system, which can reduce the temperature of the drill bit, and simultaneously enhance the wave absorption capacity of the rock, increase the effect of the microwave action, improve the efficiency and reduce the wear of drilling tools. - As shown in
FIG. 2 , a cross section of thedrill bit body 101 is circular, a plurality of thecutterhead 102 are provided, the plurality of thecutterheads 102 are provided on thedrill bit body 101 along a circumference direction at equal intervals, the cuttingtooth 103 is provided on thecutterhead 102; a plurality of themicrowave emitting hole 201 are provided, the plurality of themicrowave emitting holes 201 are provided on thedrill bit body 101 along the circumference direction at equal intervals, a singlemicrowave emitting hole 201 is located between twoadjacent cutterheads 102; a plurality of thewater jetting hole 301 are provided, the plurality of thewater jetting holes 301 are provided on thedrill bit body 101 along the circumference direction at equal intervals, a singlewater jetting hole 301 is located between twoadjacent cutterheads 102. - Briefly, the
cutterhead 102, themicrowave emitting hole 201, and thewater jetting hole 301 are all provided on the cross section of thedrill bit body 101 in a centrosymmetric manner, with a symmetrical center being a center of the circle of the cross section. Such a structure design is more reasonable, and, compared with a single set-up, a plurality of thecutterhead 102 are provided, which can improve a drilling efficiency; a plurality of themicrowave emitting hole 201 are provided, which can improve a softening efficiency; a plurality of thewater jetting hole 301 are provided, which can improve a cleaning and cooling efficiency. - As shown in
FIG. 3 , a distance between themicrowave emitting hole 201 and the center of the circle of the cross section of thedrill bit body 101 is greater than a distance between thewater jetting hole 301 and the center of the circle of the cross section of thedrill bit body 101. - In short, that is, the
microwave emitting hole 201 is further away from the center, and thewater jetting hole 301 is closer to the center. A circularly smooth connecting line connecting the plurality of themicrowave emitting holes 201 can form a closed circle, and similarly, a circularly smooth connecting line connecting the plurality of thewater jetting holes 301 can also form a closed circle. The circle formed by the plurality of themicrowave emitting holes 201 and the circle formed by the plurality of thewater jetting holes 301 are concentric circles, and the circle formed by the plurality of themicrowave emitting holes 201 is outside the circle formed by the plurality of the water jetting holes 301. - With such a structure, the
water jetting hole 301 is located more centrally, which can further improve the cleaning and cooling effect of thewater jetting hole 301. After a high-pressure water column is jetting out from thewater jetting hole 301, the column will impact on the rock and then splashes of water appear in all directions, which can better clean out rock debris accumulated at a central axis of thedrill bit body 101. - Specifically, three
cutterheads 102, threemicrowave emitting holes 201, and threewater jetting holes 301 are respectively provided, which has an advantage of reasonable structure, while taking into account the cleaning and cooling effect. - As shown in
FIG. 5 , themicrowave generating assembly 2 further comprises amicrowave source 202, awaveguide 203, acirculator 204, awater load 205, and amicrowave emitting rod 206. Themicrowave source 202 is connected with thecirculator 204 through thewaveguide 203, thecirculator 204 is connected with themicrowave emitting rod 206 through thewaveguide 203, themicrowave emitting rod 206 is connected with themicrowave emitting hole 201; thewater load 205 is connected with thecirculator 204. A microwave is emitted through themicrowave source 202, thewaveguide 203, thecirculator 204, thewater load 205, themicrowave emitting rod 206, and other equipment. - The
microwave emitting rod 206 between a microwave generating device and themicrowave emitting rod 206 comprises an inner conductor, an outer conductor, and a microwave emitting head, the outer conductor is coaxially sleeved on an outer side of the inner conductor, and the microwave emitting head is located at one end farther from thewaveguide 203. As shown inFIG. 4 , a glass fiber reinforcedplastic 207 is arranged between the microwave emitting head and themicrowave emitting hole 201, and the glass fiber reinforcedplastic 207 is a quartz structure. The microwave emitting head on themicrowave emitting rod 206 is isolated and protected by the glass fiber reinforcedplastic 207; at the same time, the quartz material has wave-transmitting characteristics to ensure the effectiveness of microwave emitting. - As shown in
FIG. 6 , the water-jetting and dust-removingassembly 3 further comprises awater tank 302, awater pressure controller 303, aflow meter 304, anadapter 305, and awater pipe 306; thewater tank 302 is connected with thewater pressure controller 303 through thewater pipe 306, thewater pressure controller 303 is connected with theflow meter 304 through thewater pipe 306, theflow meter 304 is connected with theadapter 305 through thewater pipe 306, and theadapter 305 is connected with thewater jetting hole 301. A jetty high-pressure water column is provided through the above assemblies to realize the cleaning function, cooling function, etc. - The integrated
drill bit assembly 1, themicrowave generating assembly 2, and the water-jetting and dust-removingassembly 3 in the present device are all modular. - In combination with
FIG. 1 andFIG. 5 , themicrowave source 202, thecirculator 204, and thewater load 205 are integrated into the microwave generating device, themicrowave emitting rod 206 is located on themicrowave generating assembly 2, and the microwave generating device and themicrowave emitting rod 206 are connected through thewaveguide 203. Themicrowave source 202, thecirculator 204, and thewater load 205 are integrated to form an independent microwave generating device, which makes each part of the present device modular. - The
water tank 302, thewater pressure controller 303, theflow meter 304, and theadapter 305 are integrated into a water-jetting and dust-removing device, and the water-jetting and dust-removing device is connected with thewater jetting hole 301 through thewater pipe 306. Thewater tank 302, thewater pressure controller 303, theflow meter 304, and theadapter 305 are integrated to form an independent water-jetting and dust-removing device, which makes each part of the present device modular. - As shown in
FIG. 1 , the integrateddrill bit assembly 1 further comprises adrill rod 104, thedrill bit body 101, thecutterhead 102, and the cuttingtooth 103 are arranged on thedrill rod 104 and are located at a lower end of thedrill rod 104; thedrill rod 104 is arranged in a drilling well through adrilling support 4. Thedrill bit body 101, thecutterhead 102 and the cuttingtooth 103 are integrated through thedrill rod 104 to form an independent integrateddrill bit assembly 1, which makes each part of the present device modular. - The microwave rock-breaking drilling device in the present disclosure comprises the integrated
drill bit assembly 1, themicrowave generating assembly 2, and the water-jetting and dust-removingassembly 3. According to a design principle of PDC drill bit, threecutterheads 102 are uniformly arranged on the drill bit, themicrowave emitting hole 201 and thewater jetting hole 301 are uniformly arranged in a gap between thecutterheads 102, thewaveguide 203 and thewater pipe 306 are arranged inside the drill bit, and the microwave generating device and the water-jetting and dust-removing device are connected with the outside of the drill bit through pipes. - The
microwave generating assembly 2 comprises an external basic microwave equipment, which is composed of themicrowave source 202, thewaveguide 203, thecirculator 204, thewater load 205, and themicrowave emitting rod 206. One end of themicrowave source 202 is connected with thewaveguide 203, and thewaveguide 203 transmits the microwave to thewater load 205 and thecirculator 204, and one end of thecirculator 204 is connected with themicrowave emitting rod 206 to emit the microwave to act on the rock. Themicrowave source 202 is composed of a magnetron; themicrowave emitting rod 206 is composed of the inner conductor, the outer conductor, and the microwave emitting head. The microwave is led out from the inner conductor and is led out from the microwave emitting head to act on the rock; a material of the microwave emitting head is a wave-transmitting material such as quartz, etc. - The microwave rock-breaking drilling device in the present disclosure can reasonably use its functions according to the hardness of the rock in the drilling area. When the rock hardness is small, the device can directly break the rock by only the mechanical cutting action of the
cutterhead 102 of the drill bit; when the rock hardness is large, the microwave generating device can be turned on to soften the hard rock by microwave heating, while the rock breaking drilling operation can be performed together with the mechanical cutting action of the drilling tools; when the rock hardness is extremely large and it is difficult for the drilling tools to break the rock, which seriously affects the working efficiency, the drill bit operation can be stopped, the microwave emitting device can be turned on, and the microwave action can be performed on the hard rock to quickly reduce the mechanical properties of the rock, and then the drill tools can be used to break the rock. - The water-jetting and dust-removing device comprises the
water tank 302, thewater pressure controller 303, theflow meter 304, and thewater pipe 306. Thewater tank 302 is connected with thewater pressure controller 303 through thewater pipe 306, and thewater pressure controller 303 is connected with theflow meter 304 through thewater pipe 306, a water flow pressure and a flow can be controlled through an indication display of theflow meter 304. When a dust is massive or a temperature of an action surface is high, the water-jetting and dust-removing device can be turned on to remove dust and reduce temperature, at the same time, an ability of absorbing wave of rock can be enhanced and an effect of microwave action can be increased. - In summary, the present disclosure provides a microwave rock-breaking drilling device, which comprises the integrated
drill bit assembly 1, the microwave generating device, and the water-jetting and dust-removing device; the microwave generating device is mainly composed of themicrowave source 202, thewaveguide 203, thewater load 205, thecirculator 204, and themicrowave emitting rod 206. The microwave generated by the microwave generating device is used to act on the hard rock, which changes the mechanical properties of the rock, and plays the role of softening the rock and assisting rock breaking; the water-jetting and dust-removing device is composed of thewater tank 302, thewater pressure controller 303, theflow meter 304, and thewater pipe 306. The water-jetting and dust-removing device has the functions of removing dust and cooling, enhancing the wave absorption ability of the rock, and increasing the effect of the microwave action. In the process of deep rock drilling and crushing, due to the high hardness of the rock, it is easy to cause serious wear of the drill bit blades, thus reducing the operation efficiency and increasing the drilling costs. Therefore, it is urgent to upgrade and reform the traditional drilling equipment. By introducing a new type of the microwave-assisted rock breaking device, using the advantages of the body heating, no heat transfer medium, fast heating, and high efficiency of the microwave action, the strength of the rock is weakened when the device acts on the hard rock, which can greatly improve the rock breaking efficiency, reduce the equipment wear, and reduce the drilling costs. - It is to be understood that the present disclosure is not limited to the embodiments described above. Modifications and variations may be resorted to in light of the above teachings by those skilled in the art, all these modifications and variations should be considered as falling within the scope of the appended claims.
Claims (10)
1. A microwave rock-breaking drilling device, wherein comprising:
an integrated drill bit assembly, the integrated drill bit assembly comprises a drill bit body, a cutterhead, and a cutting tooth, the cutterhead and the cutting tooth are provided on the drill bit body;
a microwave generating assembly, the microwave generating assembly comprises a microwave emitting hole, the microwave emitting hole is located on the drill bit body and is communicated with outside;
a water-jetting and dust-removing assembly, the water-jetting and dust-removing assembly comprises a water jetting hole, the water jetting hole is located on the drill bit body and is communicated with the outside.
2. The microwave rock-breaking drilling device according to claim 1 , wherein a cross section of the drill bit body is circular, a plurality of the cutterhead are provided, the plurality of the cutterheads are provided on the drill bit body along a circumference direction at equal intervals, the cutting tooth is provided on the cutterhead;
a plurality of the microwave emitting hole are provided, the plurality of the microwave emitting holes are provided on the drill bit body along the circumference direction at equal intervals, a single microwave emitting hole is located between two adjacent cutterheads;
a plurality of the water jetting hole are provided, the plurality of the water jetting holes are provided on the drill bit body along the circumference direction at equal intervals, a single water jetting hole is located between two adjacent cutterheads.
3. The microwave rock-breaking drilling device according to claim 2 , wherein a distance between the microwave emitting hole and a center of circle of the cross section of the drill bit body is greater than a distance between the water jetting hole and the center of circle of the cross section of the drill bit body.
4. The microwave rock-breaking drilling device according to claim 2 , wherein three cutterheads, three microwave emitting holes, and three water jetting holes are respectively provided.
5. The microwave rock-breaking drilling device according to claim 1 , wherein the microwave generating assembly further comprises a microwave source, a waveguide, a circulator, a water load, and a microwave emitting rod;
the microwave source is connected with the circulator through the waveguide, the circulator is connected with the microwave emitting rod through the waveguide, the microwave emitting rod is connected with the microwave emitting hole; the water load is connected with the circulator.
6. The microwave rock-breaking drilling device according to claim 5 , wherein the microwave source, the circulator, and the water load are integrated into a microwave generating device, the microwave emitting rod is located on the microwave generating assembly, and the microwave generating device and the microwave emitting rod are connected through the waveguide.
7. The microwave rock-breaking drilling device according to claim 5 , wherein the microwave emitting rod between the microwave generating device and the microwave emitting rod comprises an inner conductor, an outer conductor, and a microwave emitting head, the outer conductor is coaxially sleeved on an outer side of the inner conductor, and the microwave emitting head is located at one end farther from the waveguide;
a glass fiber reinforced plastic is arranged between the microwave emitting head and the microwave emitting hole.
8. The microwave rock-breaking drilling device according to claim 1 , wherein the water jetting and dust-removing assembly further comprises a water tank, a water pressure controller, a flow meter, an adapter, and a water pipe;
the water tank is connected with the water pressure controller through the water pipe, the water pressure controller is connected with the flow meter through the water pipe, the flow meter is connected with the adapter through the water pipe, and the adapter is connected with the water jetting hole.
9. The microwave rock-breaking drilling device according to claim 8 , wherein the water tank, the water pressure controller, the flow meter, and the adapter are integrated into a water-jetting and dust-removing device, and the water-jetting and dust-removing device is connected with the water jetting hole through the water pipe.
10. The microwave rock-breaking drilling device according to claim 1 , wherein the integrated drill bit assembly further comprises a drill rod; the drill bit body, the cutterhead, and the cutting tooth are arranged on the drill rod and are located at a lower end of the drill rod; the drill rod is arranged in a drilling well through a drilling support.
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PCT/CN2021/106040 WO2022127090A1 (en) | 2020-12-17 | 2021-07-13 | Microwave rock breaking drilling device |
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CN113338886A (en) * | 2021-07-19 | 2021-09-03 | 海南大学 | For CO2Microwave modified storage increasing technical equipment in underground sealing |
CN113464128B (en) * | 2021-07-21 | 2023-04-25 | 四川大学 | Microwave-assisted rock breaking device and method for simulating lunar-based environmental drilling process |
CN114352202A (en) * | 2021-12-17 | 2022-04-15 | 贵州大学 | Microwave and high-pressure hot water rock breaking and drilling device |
CN115807620A (en) * | 2023-02-06 | 2023-03-17 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Drilling equipment and drilling method |
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US9453373B2 (en) * | 2012-08-09 | 2016-09-27 | James H. Shnell | System and method for drilling in rock using microwaves |
CN104563883A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工集团公司 | Microwave-assisted rock breaking drill bit, electricity conductive drill rod and microwave-assisted rock breaking device |
CN203961781U (en) * | 2014-06-04 | 2014-11-26 | 中国石油集团长城钻探工程有限公司 | The drilling tool of a kind of down-hole microwave auxiliary rock |
CN106979016B (en) * | 2017-05-26 | 2019-02-05 | 东北大学 | A kind of microwave presplitting formula hard rock tunnel development machine cutterhead |
CN109372433A (en) * | 2018-10-11 | 2019-02-22 | 刘伟 | A kind of PDC drill bit of heat spall broken rock |
CN109763832A (en) * | 2018-12-25 | 2019-05-17 | 中铁隧道局集团有限公司 | A kind of microwave-assisted broken rock TBM cutterhead for hard rock |
CN211573525U (en) * | 2019-09-30 | 2020-09-25 | 新奥科技发展有限公司 | Hard rock tunneling device |
CN112096396B (en) * | 2020-09-22 | 2021-10-01 | 中南大学 | Microwave, laser and cavitation jet combined rock breaking cutter head and rock breaking method |
CN112096395A (en) * | 2020-09-22 | 2020-12-18 | 中南大学 | Microwave and cavitation jet combined rock breaking cutter head and rock breaking method |
CN112523685A (en) * | 2020-12-17 | 2021-03-19 | 深圳大学 | Microwave rock breaking and drilling device |
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