CN110242220A - It is a kind of for excavating the rotary drill drill bit of geothermal drilling - Google Patents

It is a kind of for excavating the rotary drill drill bit of geothermal drilling Download PDF

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Publication number
CN110242220A
CN110242220A CN201910395555.3A CN201910395555A CN110242220A CN 110242220 A CN110242220 A CN 110242220A CN 201910395555 A CN201910395555 A CN 201910395555A CN 110242220 A CN110242220 A CN 110242220A
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CN
China
Prior art keywords
rotary drill
drill
pipe
drilling rod
drilling
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Granted
Application number
CN201910395555.3A
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Chinese (zh)
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CN110242220B (en
Inventor
刘艺辉
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Jiangsu Zhengyu Tools Co ltd
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Hunan Dadao New Energy Development Co Ltd
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Priority to CN201910395555.3A priority Critical patent/CN110242220B/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/44Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/60Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/602Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02Couplings; joints
    • E21B17/04Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22Rods or pipes with helical structure

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

Rotary drill drill bit provided by the present invention for excavating geothermal drilling includes: rotary drill drilling rod, rotary drill apex point and extension arm, the end of the rotary drill drilling rod is provided with the rotary drill apex point, tine is provided on the rotary drill apex point, plush copper and casting slot, the other end setting of the rotary drill drilling rod is fluted, threaded hole is arranged in the side wall of the groove, the protrusion of the corresponding groove is provided on the extension arm, the protrusion is plugged in the groove, the threaded hole, which is corresponded to, in the protrusion is provided with screw hole, bolt-through is spirally connected the threaded hole and screw hole, the rotary drill drilling rod is connected with extension arm.The rotary drill drilling rod and the extension arm outer wall are separately provided for that the first blade and the second blade of wellhole for soil is discharged.The present invention is used to excavate the rotary drill drill bit of geothermal drilling, meets the needs of drilling depth by way of the extension arm described in the adjunction to extend.

Description

It is a kind of for excavating the rotary drill drill bit of geothermal drilling
Technical field
The present invention relates to geothermal drilling field of drill more particularly to a kind of for excavating the rotary drill drill bit of geothermal drilling.
Background technique
Rotary drill platform is generally required in geothermal energy resources development process and drills through deep hole deep enough, and the deep hole extends to underground heat At heat source, underground heat is realized by way of arranging the heat exchange mechanism that can take heat source out of from ground end heat source into the deep hole Utilization.
The requirement of deep hole depth is often not achieved in the length for the rotary drill drill bit that rotary drill platform is equipped with during drilling through deep hole, And if the motor of rotary drill drill bit drives longer rotary drill drill bit rotation drilling when using longer rotary drill drill bit, due to rotary drill The longer other end amplitude of oscillation for often making rotary drill drill bit of drill bit is excessive, when just burying, because of the pendulum of the end of rotary drill drill bit Dynamic big the case where causing rotary drill drill bit to strike ground, be easy to causeing the breaking of rod, and due to the longer shaft to motor of rotary drill drill bit Biggish burden is caused, the service life of motor is influenced.
Summary of the invention
In order to solve the above technical problems, the present invention provide it is a kind of for excavating the rotary drill drill bit of geothermal drilling.
It is a kind of for excavating the rotary drill drill bit of geothermal drilling, including rotary drill drilling rod and extension arm, wherein
Spiral surrounding has the first blade for soil to be discharged on the side wall of the rotary drill drilling rod, and the one of the rotary drill drilling rod End is provided with rotary drill apex point, and the rotary drill apex point is in cone-shaped structure, is provided with zigzag shape on the side wall of the rotary drill apex point Casting slot, the side wall of the rotary drill apex point of casting slot side is provided with plush copper, the tip rotation of the rotary drill apex point It is symmetrically arranged with tine;
The end face setting of the other end of the rotary drill drilling rod is fluted, and the groove is by cylindrical depression and the recess The limiting slot being oppositely arranged on side wall is constituted, and the side wall of the rotary drill drilling rod is circumferentially provided with the screw thread for being connected to the groove Hole;
Helical ring is wound with the second blade on the side wall of the extension arm, and cross sectional shape is arranged in one end of the extension arm The protrusion to match with the groove, the protrusion are plugged in the groove, and the side wall of the protrusion is provided with the corresponding spiral shell The screw hole of pit is spirally connected by threaded hole described in screw bolt passes and the screw hole, and the bottom of second blade, which coincide, to be supported The top of first blade is touched, the other end of the extension arm is identical as another end structure of the rotary drill drilling rod.
Preferably, a pair of of first pipe, distribution in the rotary drill apex point are provided in the rotary drill drilling rod along its length Network-like pipeline equipped with water outlet and water inlet end, the water outlet of the network-like pipeline and water inlet end are respectively communicated with described in two First pipe.
Preferably, a pair of of second pipe, one end of the second pipe are provided in the extension arm along its length It is connected to the first pipe.
Preferably, the rotary drill drill bit for excavating geothermal drilling further includes cylindrical connector, is set in the connector Two water service pipes are set, toroidal cavity is arranged in the side wall of the connector, and the end of two water service pipes is connected to the circular ring shape Groove, the toroidal cavity sealing are rotatably connected to swivel becket, L-shaped connecting tube, the company are connected on the swivel becket Adapter tube is connected to the water service pipe through the swivel becket, and the connecting tube is connected to the first pipe or the second pipe, Two water service pipes are separately connected water source and blowoff basin by pipeline.
Preferably, it is connected to the fan-shaped structure of water flowing tube end of the toroidal cavity.
Preferably, the first check valve and second one-way valve are respectively arranged in two connections.
Preferably, the first female connector is arranged in the first pipe end in the groove, in the protrusion The second pipe end is provided with sub- connector, and the other end of the second pipe is provided with and the first female connector structure phase The second same female connector, the sub- connector are connected to first female connector.
Preferably, there are the second sub- connector identical with the sub- joint structure, second son in the end of the connecting tube Connector is connected to first female connector or second female connector.
Compared with the relevant technologies, the rotary drill drill bit provided by the present invention for excavating geothermal drilling has following beneficial to effect Fruit:
Provided by the present invention for excavating the rotary drill drill bit of geothermal drilling, the rotary drill drilling rod and the extension arm End is respectively provided with same grooves, and the other end of the extension arm is provided with the protrusion with matching grooves, the protrusion grafting The extension arm is enabled to be connected to the rotary drill drilling rod in the groove, the extension arm can be connected with each other itself With the long length for excavating the rotary drill drill bit entirety of geothermal drilling to meet the needs of drilling depth, and facilitate drilling platforms The assembly for connecting the rotary drill drilling rod and rotary drill apex point first drills out wellhole, since the assembly of rotary drill drilling rod and rotary drill apex point is long Degree is shorter, can effectively avoid the too long end amplitude of oscillation for leading to rotary drill drill bit of rotary drill drill bit excessive, when just burying, because of rotation The case where swing of the end of drill bit causes greatly rotary drill drill bit to strike ground, be easy to cause the breaking of rod;It is shorter using length simultaneously Rotary drill drilling rod and the assembly of rotary drill apex point first drill out wellhole, it is subsequent to gradually increase and rotary drill drilling rod is to realize deeper brill Well, wellhole bottom and motor carry the burden of rotary drill jointly in the process, so that the end of rotary drill drilling rod will not generate biggish swing, So that the burden that motor undertakes is relatively small, motor can be protected.
In addition, provided by the present invention for the system that the rotary drill drill bit for excavating geothermal drilling is additionally provided with cooling, including set The first pipe for being placed in the rotary drill drilling rod, is set to the rotary drill apex point at the second pipe for being set to the extension arm Network-like pipeline and the connector can be filled the water by connector to the rotary drill drill bit of rotation, can be from rotation by connector Rotary drill drill bit drains outward.
Detailed description of the invention
Fig. 1 is the structural representation provided by the present invention for a kind of preferred embodiment for excavating the rotary drill drill bit of geothermal drilling Figure;
Fig. 2 is the structural schematic diagram at the top of rotary drill drilling rod shown in FIG. 1;
Fig. 3 is the schematic cross-sectional view of rotary drill apex point shown in FIG. 1;
Fig. 4 is the structural schematic diagram of extension arm shown in FIG. 1;
Fig. 5 is the structural schematic diagram of the structure and bottom protrusion at the top of extension arm shown in Fig. 4;
Fig. 6 is a kind of structural schematic diagram of preferred embodiment of connector provided by the invention.
Figure label: 1, rotary drill drilling rod, 11, threaded hole, 12, first pipe, the 121, first female connector, 13, groove, 2, One blade, 3, rotary drill apex point, 31, casting slot, 32, plush copper, 33, tine, 4, extension arm, the 41, first threaded hole, 42, Two pipelines, the 421, second female connector, 422, sub- connector, the 43, first groove, 44, screw hole, 45, protrusion, the 5, second blade, 6, connect Head, 61, water service pipe, 7, swivel becket, 71, connecting tube, the 8, first check valve, 9, second one-way valve.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6 are please referred to, wherein Fig. 1 is provided by the present invention for excavating ground A kind of structural schematic diagram of preferred embodiment of the rotary drill drill bit of hot drilling well;Fig. 2 is the structure at the top of rotary drill drilling rod shown in FIG. 1 Schematic diagram;Fig. 3 is the schematic cross-sectional view of rotary drill apex point shown in FIG. 1;Fig. 4 is that the structure of extension arm shown in FIG. 1 is shown It is intended to;Fig. 5 is the structural schematic diagram of the structure and bottom protrusion at the top of extension arm shown in Fig. 4;Fig. 6 is provided by the invention A kind of structural schematic diagram of preferred embodiment of connector.
As shown in fig.1, it is a kind of for excavating the rotary drill drill bit of geothermal drilling, including rotary drill drilling rod 1 and extension arm 4, Wherein,
Spiral surrounding has the first blade 2 for soil to be discharged on the side wall of the rotary drill drilling rod 1 cylindrical, described First blade 2 helically see by plate, the extending direction along first blade 2, and the outer rim of first blade 2 is circle, institute The one end for stating rotary drill drilling rod 1 is provided with rotary drill apex point 3, the knot that the rotary drill apex point 3 is integrally formed with the rotary drill drilling rod 1 Structure, the rotary drill apex point 3 is in cone-shaped structure, and the diameter of 3 top surface of rotary drill apex point is equal to the outer rim of first blade 2 The circular diameter formed is provided with the casting slot 31 of zigzag shape on the side wall of the rotary drill apex point 3, the casting slot 31 The top surface of the rotary drill apex point 3, and the hand of spiral of the hand of spiral of the casting slot 31 and first blade 2 are run through in one end Unanimously, the side wall of the rotary drill apex point 3 of 31 side of casting slot is provided with plush copper 32, and the plush copper 32 is in newborn spike, institute It states and is provided with stud in plush copper 32, hard soil is ploughed by pine, the tip rotation pair of the rotary drill apex point 3 by the plush copper 32 Title is provided with tine 33, and the tine 33 sharp tooth arc-shaped in the straight side in side, straight side is in blade-like, Straight side is towards the direction of rotation of the rotary drill apex point 3, and when the rotary drill apex point 3 rotates, the plough of tine 33 opens soil Earth enables the rotary drill apex point 3 is more easily lower to bore, and in going down process, the plush copper 32 encounters the rotary drill side wall Soil plough pine, and with the rotation of the rotary drill apex point 3 be expelled to upwards along the casting slot 31 by the soil of plough pine it is described The intersection of rotary drill apex point 3 and the rotary drill drilling rod 1, and with the rotation of the rotary drill drilling rod 1, soil is arranged along one end First blade 2 of the rotary drill apex point 3 and the intersection of the rotary drill drilling rod 1 is discharged outside well.
As shown in fig.2, the end face setting fluted 13 of the other end of the rotary drill drilling rod 1, the groove 13 is by cylinder The limiting slot being oppositely arranged in the recess of shape and the recessed side walls is constituted, and the recess is coaxially set with the rotary drill drilling rod 1 It sets, the side wall of the rotary drill drilling rod 1 is circumferentially provided with the threaded hole 11 for being connected to the groove 13.
As shown in fig.4, the extension arm 4 is in cylinder identical with 1 diameter of rotary drill drilling rod, the lengthening is bored Helical ring is wound with the second blade 5 on the side wall of bar 4, and the extension arm 4 is extended in the bottom of second blade 5, described to add The protrusion 45 that one end setting cross sectional shape of long drill pipe 4 and the groove 13 match, described raised 45 are plugged in the groove 13, raised 45 side wall is provided with the screw hole 44 of the corresponding threaded hole 11, passes through threaded hole described in screw bolt passes 11 and the screw hole 44 be spirally connected, the rotary drill drilling rod is connect with the extension arm 4, and the bottom of second blade 5 kiss The top for contradicting first blade 2 is closed, in specific implementation process, it is contemplated that the top of the rotary drill drilling rod 1 is connected to The top of the extension arm 4 on the rotary drill drilling rod 1 requires connect on drilling platforms, the top of first blade 2 Apart from described 1 top a distance of rotary drill drilling rod, one section of 4 top of extension arm described in the distance from top of second blade 5 away from From, therefore the bottom end of the extension arm 4 is extended in the bottom of second blade 5, to realize the top of first blade 2 It coincide with the bottom picture of second blade 5, another end structure of the other end of the extension arm 4 and the rotary drill drilling rod 1 It is identical, it include first groove 43 identical with the structure of the groove 13, first threaded hole identical with the threaded hole 11 41, to continue to connect extension arm on extension arm.
A pair of of first pipe 12 is provided in the rotary drill drilling rod 1 along its length, is distributed in the rotary drill apex point 3 The network-like pipeline of water outlet and water inlet end, the water outlet of the network-like pipeline and water inlet end are respectively communicated with two described first Pipeline 12.It is provided with a pair of of second pipe 42 in the extension arm 4 along its length, the second pipe 42 corresponding described the One end of the setting of one pipeline 12, the second pipe 42 is connected to the first pipe 12.In specific implementation process, in described recessed The first female connector 121 is arranged in 12 end of the first pipe in slot 13, in described raised 45 42 end of the second pipe Portion is provided with sub- connector 422, and the other end of the second pipe 42 is provided with identical with 121 structure of the first female connector Two female connectors 421, the sub- connector 422 are connected to first female connector 121.It can be managed by described first in use process Road 12 and second pipe 42 are that rotary drill drill bit integrally mentions recirculated water for cooling, and rotary drill drill bit is avoided to lead to structure because of high temperature It is impaired.
As shown in fig.6, the rotary drill drill bit for excavating geothermal drilling further includes cylindrical connector 6, it is described to connect Two water service pipes 61 are set in first 6, and the water service pipe 61 is L-shaped, and toroidal cavity, two institutes are arranged in the side wall of the connector 6 The end for stating water service pipe 61 is connected to the toroidal cavity, is connected to 61 end of the water service pipe of the toroidal cavity in fan Shape, the connecting tube 71 by when fan-shaped 61 end of water service pipe can the water flowing between the water service pipe 61, it is described logical The fan-shaped one end of water pipe 61 ensure that rotation the connecting tube 71 can toroidal cavity sealing be rotatably connected to Rotating ring 7, L-shaped connecting tube 71 is connected on the swivel becket 7, and the connecting tube 71 is connected to described logical through the swivel becket 7 Water pipe 61, the connecting tube 71 are connected to the first pipe 12 or the second pipe 42, and two water service pipes 61 pass through Pipeline is separately connected water source and blowoff basin, and there is the second son identical with sub- 422 structure of connector in the end of the connecting tube 71 Connector, the second sub- connector are connected to first female connector 121 or second female connector 421.Two connections The first check valve 8 and second one-way valve 9 are respectively arranged in pipe 71, first check valve 8 makes water from the water service pipe 61 In be flowed into the connecting tube 71, the second one-way valve 9 is flowed into water in water service pipe from the connecting tube 71.
It is as follows provided by the present invention for the principle of the rotary drill drill bit of excavation geothermal drilling:
For the rotary drill drill bit provided by the present invention for excavating geothermal drilling, when the rotary drill apex point 3 rotates, the pine The native plough of tooth 33 opens soil, enables the rotary drill apex point 3 is more easily lower to bore, in going down process, the plush copper 32 will be described Soil that rotary drill side wall encounters ploughs pine, and with the rotation of the rotary drill apex point 3 by the soil of plough pine along the casting slot 31 to On be expelled to the intersection of the rotary drill apex point 3 with the rotary drill drilling rod 1, and with the rotation of the rotary drill drilling rod 1, soil edge One end be arranged in the rotary drill apex point 3 with outside the first blade 2 discharge well of the intersection of the rotary drill drilling rod 1.
The top of the rotary drill drilling rod 1 is provided with the groove 13, and the bottom of the extension arm 4 corresponds to the groove 13 It is provided with described raised 45, described raised 45 to be plugged in the groove 13, the side wall of the groove 13 is provided with perforative spiral shell Pit 11 corresponds to the threaded hole 11 on described raised 45 and is provided with screw hole 44, is spirally connected the threaded hole 11 and spiral shell by bolt The rotary drill drilling rod 1 is connect by hole 44 with the extension arm 4, and when drilling well first passes through motor and shorter rotary drill drill bit is driven to bore Well, then in subsequent drilling process connect the extension arm 4 constantly again to lengthen the length of rotary drill drill bit, it avoids directly making Excessive problem is swung with long rotary drill drill bit cause just the to bury end of rotary drill drill bit, while reducing rotary drill drill bit to motor Shaft caused by bear, guarantee the service life of motor.
In addition, described for excavate the rotary drill drill bit of geothermal drilling to further include connector 6, the connector 6, the connector 6 are logical Cross the 7 mating connection pipe 71 of swivel becket of rotary setting thereon to the first pipe 12 being set in the rotary drill drilling rod 1 or to The second pipe 42 being set in the extension arm 4 fills the water, and integrally cools down to rotary drill drill bit, and passes through the connector 6 The water of cooling is discharged.
Provided by the present invention for excavating the rotary drill drill bit of geothermal drilling, the rotary drill drilling rod 1 and the extension arm 4 End be respectively provided with same grooves, the other end of the extension arm 4 is provided with the protrusion 45 with matching grooves, the protrusion 45, which are plugged in the groove, enables the extension arm 4 to be connected to the rotary drill drilling rod 1, itself energy of extension arm 4 It is enough to be connected with each other with long for excavating the length of the rotary drill drill bit entirety of geothermal drilling to meet the needs of drilling depth, Er Qiefang Just the assembly that drilling platforms connects the rotary drill drilling rod 1 and rotary drill apex point 3 first drills out wellhole, due to rotary drill drilling rod 1 and rotary drill The combination body length of apex point 3 is shorter, can effectively avoid the too long end amplitude of oscillation for leading to rotary drill drill bit of rotary drill drill bit excessive, Just when burying, because the swing of the end of rotary drill drill bit causes greatly rotary drill drill bit to strike ground, the case where be easy to causeing the breaking of rod;Together The assembly of the shorter rotary drill drilling rod 1 of Shi Caiyong length and rotary drill apex point 3 first drills out wellhole, subsequent to gradually increase simultaneously rotary drill drilling rod To realize deeper drilling well, wellhole bottom and motor carry the burden of rotary drill jointly in the process, so that the end of rotary drill drilling rod 1 will not Biggish swing is generated, so that the burden that motor undertakes is relatively small, motor can be protected.
In addition, provided by the present invention for the system that the rotary drill drill bit for excavating geothermal drilling is additionally provided with cooling, including set It is placed in the first pipe 12 of the rotary drill drilling rod 1, the second pipe 42 for being set to the extension arm 4, is set to the rotary drill The network-like pipeline and the connector 6 of apex point 3 can be filled the water by the connector 6 to the rotary drill drill bit of rotation, by described Connector 6 can drain outward from the rotary drill drill bit of rotation.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills Art field, is included within the scope of the present invention.

Claims (8)

1. a kind of for excavating the rotary drill drill bit of geothermal drilling, which is characterized in that including rotary drill drilling rod (1) and extension arm (4), Wherein,
Helical ring is wound with the first blade (2) on the side wall of the rotary drill drilling rod (1), and one end of the rotary drill drilling rod (1) is provided with Rotary drill apex point (3), the rotary drill apex point (3) are in cone-shaped structure, are provided with zigzag shape on the side wall of the rotary drill apex point (3) Casting slot (31), the side wall of the rotary drill apex point (3) of casting slot (31) side is provided with plush copper (32), the rotary drill The tip rotational symmetry of apex point (3) is provided with tine (33);
Fluted (13) are arranged in the end face of rotary drill drilling rod (1) other end, and the groove (13) is by cylindrical depression and institute It states the limiting slot being oppositely arranged in recessed side walls to constitute, it is described recessed that the side wall of the rotary drill drilling rod (1) is circumferentially provided with connection The threaded hole (11) of slot (13);
Helical ring is wound with the second blade (5) on the side wall of the extension arm (4), and one end setting of the extension arm (4) is cut The protrusion (45) that face shape and the groove (13) match, the protrusion (45) are plugged in the groove (13), the protrusion (45) side wall is provided with the screw hole (44) of the corresponding threaded hole (11), by threaded hole described in screw bolt passes (11) and The screw hole (44) is spirally connected, and the bottom of second blade (5), which coincide, contradicts the top of first blade (2), the lengthening The other end of drilling rod (4) is identical as another end structure of the rotary drill drilling rod (1).
2. according to claim 1 for excavating the rotary drill drill bit of geothermal drilling, which is characterized in that the rotary drill drilling rod (1) it is provided with along its length a pair of of first pipe (12) in, is distributed with water outlet and water inlet end in the rotary drill apex point (3) Network-like pipeline, the water outlet of the network-like pipeline and water inlet end are respectively communicated with two first pipes (12).
3. according to claim 2 for excavating the rotary drill drill bit of geothermal drilling, which is characterized in that the extension arm (4) it is provided with along its length a pair of of second pipe (42) in, one end of the second pipe (42) is connected to the first pipe (12)。
4. according to claim 3 for excavating the rotary drill drill bit of geothermal drilling, which is characterized in that described for excavating ground The rotary drill drill bit of hot drilling well further includes cylindrical connector (6), and two water service pipes (61) are arranged in the connector (6), described to connect Toroidal cavity is arranged in the side wall of head (6), and the end of two water service pipes (61) is connected to the toroidal cavity, the annulus Connected in star sealing is rotatably connected to swivel becket (7), is connected with L-shaped connecting tube (71), the connecting tube on the swivel becket (7) (71) be connected to the water service pipe (61) through the swivel becket (7), the connecting tube (71) be connected to the first pipe (12) or Second pipe described in person (42), two water service pipes (61) are separately connected water source and blowoff basin by pipeline.
5. according to claim 4 for excavating the rotary drill drill bit of geothermal drilling, which is characterized in that be connected to the circular ring shape The fan-shaped structure in the water service pipe (61) end of groove.
6. according to claim 4 for excavating the rotary drill drill bit of geothermal drilling, which is characterized in that two connecting tubes (71) the first check valve (8) and second one-way valve (9) are respectively arranged in.
7. according to claim 4 for excavating the rotary drill drill bit of geothermal drilling, which is characterized in that be in the groove (13) the first female connector (121) are arranged in the first pipe (12) end in, second pipe in raised (45) Road (42) end is provided with sub- connector (422), and the other end of the second pipe (42) is provided with and first female connector (121) identical second female connector (421) of structure, the sub- connector (422) are connected to first female connector (121).
8. according to claim 7 for excavating the rotary drill drill bit of geothermal drilling, which is characterized in that the connecting tube (71) End have the second sub- connector identical with sub- connector (422) structure, it is female that the second sub- connector is connected to described first Connector (121) or second female connector (421).
CN201910395555.3A 2019-05-13 2019-05-13 Rotary drilling bit for excavating geothermal drilling well Active CN110242220B (en)

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CN110242220B CN110242220B (en) 2020-10-23

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Cited By (3)

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CN113483147A (en) * 2021-06-16 2021-10-08 苏州中宝市政园林工程有限公司 Horizontal directional drilling and jacking pipe combined device and reinforced concrete pipe construction method
CN119122432A (en) * 2024-11-12 2024-12-13 河北华勘地质勘查有限公司 A drilling structure for underwater geological environment
CN121162191A (en) * 2025-11-20 2025-12-19 山西省地质调查院有限公司 Investigation equipment for geothermal resources and use method

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CN119122432A (en) * 2024-11-12 2024-12-13 河北华勘地质勘查有限公司 A drilling structure for underwater geological environment
CN119122432B (en) * 2024-11-12 2025-02-11 河北华勘地质勘查有限公司 A drilling structure for underwater geological environment
CN121162191A (en) * 2025-11-20 2025-12-19 山西省地质调查院有限公司 Investigation equipment for geothermal resources and use method

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