CN110130840B - Underground electric connection-available universal torque transmission device - Google Patents
Underground electric connection-available universal torque transmission device Download PDFInfo
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- CN110130840B CN110130840B CN201910446856.4A CN201910446856A CN110130840B CN 110130840 B CN110130840 B CN 110130840B CN 201910446856 A CN201910446856 A CN 201910446856A CN 110130840 B CN110130840 B CN 110130840B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 92
- 230000033001 locomotion Effects 0.000 claims abstract description 12
- 230000008054 signal transmission Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 34
- 238000006748 scratching Methods 0.000 claims description 20
- 230000002393 scratching effect Effects 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 9
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000003628 erosive effect Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/021—Devices for subsurface connecting or disconnecting by rotation
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/028—Electrical or electro-magnetic connections
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/006—Mechanical motion converting means, e.g. reduction gearings
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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)
- Flexible Shafts (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention belongs to the technical field of precise electric connection, and particularly relates to an underground universal torque transmission device capable of being electrically connected. The underground electric connection universal torque transmission device utilizes the torque transmission between two non-concentric rotating structures to convert the non-concentric motion of the two non-concentric rotating structures into the concentric motion through the universal flexible shaft, and the wire guide hole is arranged in the device to realize the electric and signal transmission of the two non-concentric rotating structures. The device can realize the large-torque universal torque transmission function under the condition of limited radial space size, and can simultaneously realize the communication of electricity and signals, and the electricity and the signals are transmitted through hard wires. The whole torque transmission device is simple and reliable in structure, can be adjusted in structure according to use occasions, and is high in usability. The two ends of the universal torque transmission device are respectively connected with electricity and signals through the coaxial connectors and the contact type slip rings, the universal torque transmission device is convenient to disassemble and assemble, the whole device is modularized, and replacement and maintenance are simple and reliable.
Description
Technical Field
The invention belongs to the technical field of precise electric connection, and particularly relates to an underground universal torque transmission device capable of being electrically connected.
Background
The universal torque transmission device is widely applied to underground drilling instruments, such as a screw drill, a rotary steering tool and the like, and mainly realizes universal torque transmission. Taking a screw drilling tool as an example, the stator performs planetary motion in the rotor cavity, and the planetary motion can be converted into coaxial motion through the universal torque transmission device, so that drilling power is provided for a drill bit.
The existing solution is as follows: the petal type universal torque transmission structure and the ball hinge type universal torque transmission structure have the advantages of short service life, complex structure and the most important reason that the over-current and signal connection cannot be realized.
Disclosure of Invention
The embodiment of the disclosure discloses a downhole electrically-connectable universal torque transmission device to solve any one of the above and other potential problems of the prior art.
In order to achieve the purpose, the embodiment of the disclosure discloses an electrically connectable universal torque transmission device for downhole, which utilizes torque transmission between two non-concentric rotating structures to convert non-concentric motions of the two non-concentric rotating structures into universal torque transmission and concentric motions through a universal flexible shaft, and a wire guide hole is arranged inside the device to realize electric connection and signal transmission of the two non-concentric rotating structures.
According to the embodiment of the disclosure, the underground electric connection-available universal torque transmission device comprises a universal flexible shaft, a flexible shaft lower joint connecting device, a flexible shaft upper joint connecting device and a universal shaft shell;
the flexible shaft lower joint, the universal flexible shaft and the flexible shaft upper joint are arranged in the universal shaft shell, two ends of the universal shaft shell are respectively connected with shells of different devices, the flexible shaft lower joint, the universal flexible shaft and the flexible shaft upper joint are sequentially arranged from left to right, and two ends of the universal flexible shaft are respectively connected with the flexible shaft lower joint and the flexible shaft upper joint through the flexible shaft lower joint connecting device and the flexible shaft upper joint connecting device; and the lower flexible shaft joint and the upper flexible shaft joint are respectively connected with equipment needing electric and signal connection.
According to the embodiment of the disclosure, the insides of a universal flexible shaft, a flexible shaft lower joint and a flexible shaft upper joint of the underground electrically connectable universal torque transmission device are respectively provided with a threading hole;
one end of the flexible shaft lower joint is connected with the rotor, a connector socket is arranged at the end part of one end of the flexible shaft lower joint connected with the rotor, and the other end of the flexible shaft lower joint is in interference fit connection with one end of the universal flexible shaft and is connected with the flexible shaft upper joint connecting device used for transmitting torque;
the other end of the universal flexible shaft is in interference fit connection with one end of a flexible shaft lower joint, the universal flexible shaft is connected with the flexible shaft lower joint through a flexible shaft lower joint connecting device used for transmitting torque, the other end of the flexible shaft lower joint is connected with a bearing support transmission shaft and is pressed in contact with the end face of a contact type slip ring, and electric connection and signal connection are achieved;
a plurality of mud holes are formed in one end, connected with the bearing support transmission shaft, of the lower flexible shaft joint, and the mud holes are communicated with mud holes of the bearing support transmission shaft in the bearing support transmission shaft;
be located the mud hole with the universal axle of scratching with scratch between the axle lower clutch junction scratch the epaxial lower clutch of last wiring cavity that is equipped with, the wiring cavity respectively with the universal axle of scratching inside through wires hole with scratch the inside through wires hole intercommunication of epaxial top connection, the entrance of wiring cavity is equipped with wiring hole end cap and end cap sealing washer.
According to this disclosed embodiment, the universal tip of scratching the both ends of axle all is equipped with boss structure, boss structure is last through first sealing washer a with scratch a lower clutch and through second sealing washer b with scratch and form sealedly between the epaxial joint.
According to the embodiment of the disclosure, the material of the flexible shaft lower joint connecting device and the flexible shaft upper joint connecting device is high-strength stainless steel, and the diameters of the flexible shaft lower joint connecting device and the flexible shaft upper joint connecting device are in direct proportion to the size of the required transmission torque.
According to this disclosed embodiment, underground is with passing through universal biography of electric connection and turns round device still including the bush that is used for preventing the high-speed mud that the mud passageway flows through from eroding the inner wall of bearing support transmission shaft, the bush sets up between scratching axle lower clutch and the bearing support transmission shaft, it is sealed through bush sealing washer a between bush and scratching the axle lower clutch, it is sealed through bush sealing washer b between bush and the bearing support transmission shaft.
According to the embodiment of the disclosure, the universal flexible shaft is made of titanium alloy, the universal flexible shaft realizes universal coupling and transmits torque, the eccentric displacement of an upper joint of the flexible shaft and a lower joint of the flexible shaft is 0-7mm, and the torque transmitted by the universal flexible shaft is 0-14000 Nm.
According to an embodiment of the present disclosure, the liner material is cemented carbide.
According to the embodiment of the disclosure, the end of the flexible shaft upper joint is sealed with the rotor through a flexible shaft upper joint sealing ring.
According to the embodiment of the disclosure, the space between the flexible shaft lower joint and the bearing support transmission shaft is sealed through the flexible shaft lower joint sealing ring.
The invention has the beneficial effects that: by adopting the technical scheme, the device can realize the large-torque universal torque transmission function under the condition of limited radial space size, and can simultaneously realize the communication of electricity and signals, and the electricity and the signals are transmitted through hard wires, so that the device is reliable and has no signal packet loss phenomenon. The whole torque transmission device is simple and reliable in structure, can be adjusted in structure according to use occasions, and is high in usability. The flexible shaft is made of titanium alloy material, so that the flexible shaft has good strength and fatigue resistance and long service life. The two ends of the universal torque transmission device are respectively connected with electricity and signals through the coaxial connectors and the contact type slip rings, the universal torque transmission device is convenient to disassemble and assemble, the whole device is modularized, and replacement and maintenance are simple and reliable.
Description of the drawings:
FIG. 1 is a schematic structural diagram of a downhole electrically connectable universal torque transmission device according to the present invention.
FIG. 2 is a schematic cross-sectional view of a downhole electrically connectable universal torque transmission device according to the present invention.
FIG. 3 is a partially enlarged structural schematic view of a downhole electrically connectable universal torque transmission device according to the present invention.
FIG. 4 is a partially enlarged structural schematic view of a downhole electrically connectable universal torque transmission device according to the present invention.
In the figure:
1-universal flexible shaft, 1.1-threading hole, 2-flexible shaft lower joint, 2.1-slurry channel, 2.2-wiring cavity, 3-wiring hole plug, 4-flexible shaft lower joint connecting device, 5-bearing supporting transmission shaft, 6-flexible shaft upper joint, 7-flexible shaft upper joint connecting device, 8-rotor, 9-lining, 10-universal shaft shell, 11-stator shell, 12-lead, 13-first flexible shaft sealing ring, a 14-plug sealing ring, 15-lining sealing ring a, 16-lining sealing ring b, 17-flexible shaft lower joint sealing ring, 18-second flexible shaft sealing ring b, 19-flexible shaft upper joint sealing ring, 20-connector socket, connector socket, 21-connector pin, 22-connector base, 23-contact slip ring, 24 boss structure.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in figures 1-4, the invention relates to a downhole electrically-connectable universal torque transmission device, which utilizes the torque transmission between two non-concentric rotating structures to convert the non-concentric motions of the two non-concentric rotating structures into concentric motions through a universal flexible shaft by utilizing the torque transmission between the two non-concentric rotating structures, and a wire guide hole is arranged in the device to realize the electrical and signal transmission of the two non-concentric rotating structures.
According to the embodiment of the disclosure, the underground electric connection-available universal torque transmission device comprises a universal flexible shaft, a flexible shaft lower joint connecting device, a flexible shaft upper joint connecting device and a universal shaft shell;
the flexible shaft lower joint, the universal flexible shaft and the flexible shaft upper joint are arranged in the universal shaft shell, two ends of the universal shaft shell are respectively connected with shells of different devices, the flexible shaft lower joint, the universal flexible shaft and the flexible shaft upper joint are sequentially arranged from left to right, and two ends of the universal flexible shaft are respectively connected with the flexible shaft lower joint and the flexible shaft upper joint through the flexible shaft lower joint connecting device and the flexible shaft upper joint connecting device; and the lower flexible shaft joint and the upper flexible shaft joint are respectively connected with equipment needing electric and signal connection.
According to the embodiment of the disclosure, the insides of a universal flexible shaft, a flexible shaft lower joint and a flexible shaft upper joint of the underground electrically connectable universal torque transmission device are respectively provided with a threading hole;
one end of the flexible shaft lower joint is connected with the rotor, a connector socket is arranged at the end part of one end of the flexible shaft lower joint connected with the rotor, and the other end of the flexible shaft lower joint is in interference fit connection with one end of the universal flexible shaft and is connected with the flexible shaft upper joint connecting device used for transmitting torque;
the other end of the universal flexible shaft is in interference fit connection with one end of a flexible shaft lower joint, the universal flexible shaft is connected with the flexible shaft lower joint through a flexible shaft lower joint connecting device used for transmitting torque, the other end of the flexible shaft lower joint is connected with a bearing support transmission shaft through trapezoidal threads and is pressed in contact with the end face of a contact type slip ring, and electric connection and signal connection are achieved;
a plurality of mud holes are formed in one end, connected with the bearing support transmission shaft, of the lower flexible shaft joint, and the mud holes are communicated with mud holes of the bearing support transmission shaft in the bearing support transmission shaft;
be located the mud hole with the universal axle of scratching with scratch between the axle lower clutch junction scratch the epaxial lower clutch of last wiring cavity that is equipped with, the wiring cavity respectively with the universal axle of scratching inside through wires hole with scratch the inside through wires hole intercommunication of epaxial top connection, the entrance of wiring cavity is equipped with wiring hole end cap and end cap sealing washer.
According to this disclosed embodiment, the universal tip of scratching the both ends of axle all is equipped with boss structure, boss structure is last through first sealing washer a with scratch a lower clutch and through second sealing washer b with scratch and form sealedly between the epaxial joint.
According to the embodiment of the disclosure, the material of the flexible shaft lower joint connecting device and the flexible shaft upper joint connecting device is high-strength stainless steel, and the diameters of the flexible shaft lower joint connecting device and the flexible shaft upper joint connecting device are in direct proportion to the size of the required transmission torque.
According to this disclosed embodiment, underground is with passing through universal biography of electric connection and turns round device still including the bush that is used for preventing the high-speed mud that the mud passageway flows through from eroding the inner wall of bearing support transmission shaft, the bush sets up between scratching axle lower clutch and the bearing support transmission shaft, it is sealed through bush sealing washer a between bush and scratching the axle lower clutch, it is sealed through bush sealing washer b between bush and the bearing support transmission shaft.
According to the embodiment of the disclosure, the universal flexible shaft is made of titanium alloy, the universal flexible shaft realizes universal coupling and transmits torque, the eccentric displacement of an upper joint of the flexible shaft and a lower joint of the flexible shaft is 0-7mm, and the torque transmitted by the universal flexible shaft is 0-14000 Nm.
According to an embodiment of the present disclosure, the liner material is cemented carbide.
A slurry channel is formed between the universal shaft shell 10 and the flexible shaft upper joint 6, the universal flexible shaft 1 and the flexible shaft lower joint 2, and slurry flows into a through hole in the middle of the bearing support transmission shaft 5 from the position of the slurry channel 2.1 on the flexible shaft lower joint 2.
The universal shaft housing 10 supports the transmission shaft 5 through a bearing, and the motion transmitted by the rotor 8 is continuously transmitted downwards through the bearing supporting transmission shaft 5 and finally transmitted to a drill bit, so that drilling power is formed.
The universal flexible shaft 1 has certain flexibility, can realize universal and transmit torque, the eccentric displacement of the flexible shaft upper joint 6 and the flexible shaft lower joint 2 is 0-7mm, the transmission torque of the universal flexible shaft 1 is 0-14000Nm, the length, the diameter and the material of the flexible shaft can be changed according to different eccentric displacement and transmission torque requirements, the diameter is 60mm, the length is 1400mm, and the used material is titanium alloy with excellent toughness and strength.
The middle of the universal flexible shaft 1 is provided with a threading hole 1.1 with the diameter of 6mm for passing a wire.
One end of a universal flexible shaft 1 is in interference fit connection with a flexible shaft upper joint 6, the universal flexible shaft 1 is connected with the flexible shaft upper joint 6 through a flexible shaft upper joint connecting device 7, the flexible shaft upper joint connecting device 7 is used for transmitting torque, the diameter of the flexible shaft upper joint connecting device 7 is related to the size of the required transmission torque, and the material is high-strength stainless steel.
The flexible shaft lower joint connecting device 4 and the flexible shaft lower joint connecting device 7 are both pins.
The other end of the flexible shaft lower joint is connected with the bearing support transmission shaft in a trapezoidal thread mode.
The tip at the both ends of universal axle of scratching 1 all is equipped with boss structure 24, boss structure is last through first sealing washer b13 with scratch axle lower clutch 2 and through second sealing washer b 18 with scratch epaxial joint 6 between form sealed, prevent that high-pressure mud from getting into universal axle of scratching 1 middle line hole of crossing.
The flexible shaft upper joint 6 is connected with the rotor 8 through taper threads, and the end part of the flexible shaft upper joint 6 is sealed with the rotor 8 through a flexible shaft upper joint sealing ring 20.
The middle of the upper connector 6 of the flexible shaft is provided with a through hole of 6mm for passing through a lead. The end of the flexible shaft upper joint 6 is provided with a connector socket 20.
The connector base 22 is connected with the rotor 8 through screw threads, and the connector pins 21 are mounted on the connector base 22.
The flexible shaft upper joint 6 is connected with the rotor 8 through tapered threads, and meanwhile, a connector pin 21 on a connector base 22 is connected with a connector socket 20 on the flexible shaft upper joint 6 in an inserting mode, so that electric and signal transmission is achieved.
The universal shaft of scratching 1 other end and scratching 2 interference fit of axle lower clutch are connected, scratch axle 1 with scratching the axle lower clutch 2 through scratching axle lower clutch connecting device 4 and link together, scratch axle lower clutch connecting device 4 and be used for the transmission moment of torsion, it is relevant with required transmission moment of torsion size to scratch the diameter of epaxial joint connecting device 4, the material adopts the high strength stainless steel.
The flexible shaft lower joint 2 is provided with a slurry channel 2.1, and slurry is led into the slurry channel at the center of the bearing support transmission shaft 5 from an annular space between the universal shaft shell 10 and the flexible shaft lower joint 2. Four slurry flow passage holes with the same size are uniformly distributed in the circumferential direction of the slurry passage 2.1.
The flexible shaft lower joint 2 is connected with the bearing support transmission shaft 5 through trapezoidal threads, and the flexible shaft lower joint 2 and the bearing support transmission shaft 5 are sealed through a flexible shaft lower joint sealing ring 17.
A bushing 9 is arranged between the flexible shaft lower joint 2 and the bearing supporting transmission shaft 5, the bushing 9 and the flexible shaft lower joint 2 are sealed through a bushing sealing ring a 15, the bushing 9 and the bearing supporting transmission shaft 5 are sealed through a bushing sealing ring b 16, and high-pressure slurry is prevented from invading into a contact type slip ring 23 between the flexible shaft lower joint 2 and the bearing supporting transmission shaft 5 to cause failure of electric connection and signal communication.
The lining 9 is made of hard alloy and mainly plays a role in preventing high-speed slurry flowing through the slurry channel 2.1 from eroding the inner wall of the bearing support transmission shaft 5 and prolonging the service life of the bearing support transmission shaft 5.
When the threads between the flexible shaft lower joint 2 and the bearing supporting transmission shaft 5 are screwed, the end faces of the contact type slip rings 23 are in contact and pressed, and electric and signal connection is realized.
The flexible shaft lower joint 2 is provided with a wiring cavity 2.2, wires are connected in the wire wiring cavity 2.2 and are connected in parallel, and the wires are excessively arranged on the side wall of the flexible shaft lower joint 2 from the center, so that the electric and signal connection is realized through the contact type slip ring 23 and the bearing support transmission shaft 5.
Scratch axle lower clutch 2's wiring cavity 2.2, by the universal wire of scratching that axle 1 center comes and scratch the wire that comes on the lateral wall of axle lower clutch 2 and weld in wiring cavity 2.2 department, the joint after the welding is deposited in wiring cavity 2.2, blocks up through wiring hole end cap 3, and wiring hole end cap 3 passes through threaded connection with scratching axle lower clutch 2, seals through end cap sealing washer 14, prevents that high-pressure mud from getting into wiring cavity 2.2.
The lead is introduced from the center of the rotor, is connected with a connector socket 20 through a connector pin 21, then reaches a wiring cavity 2.2 of a flexible shaft lower joint 2 through a central through hole of a flexible shaft upper joint 6 and a central through hole of a universal flexible shaft 1, the lead excessively reaches the side wall of the flexible shaft lower joint 2 from this, is connected with a bearing support transmission shaft 5 through a contact type slip ring 23, and continuously transmits along a line passing hole on the side wall of the bearing support transmission shaft 5, so that the electric and signal transmission of the universal torque transmission device is realized.
The sealing of the whole device is absolute sealing, namely, air is filled in all wire passing holes, and high-pressure mud is filled outside the sealing.
While several embodiments of the present invention have been presented herein, it will be appreciated by those skilled in the art that changes may be made to the embodiments herein without departing from the spirit of the invention. The above examples are merely illustrative and should not be taken as limiting the scope of the invention.
Claims (8)
1. The underground electric connection-available universal torque transmission device is characterized in that the universal torque transmission device converts non-concentric motions of two non-concentric rotating structures into concentric motions through a universal flexible shaft by utilizing torque transmission between the two non-concentric rotating structures, and a wire guide hole is arranged in the device to realize electric connection and signal transmission of the two non-concentric rotating structures; the underground electric connection-available universal torque transmission device comprises a universal flexible shaft, a flexible shaft lower joint connecting device, a flexible shaft upper joint connecting device and a universal shaft shell;
the flexible shaft lower joint, the universal flexible shaft and the flexible shaft upper joint are all arranged inside the universal shaft shell, two ends of the universal shaft shell are respectively connected with two shells of non-concentric rotating structures, the flexible shaft lower joint, the universal flexible shaft and the flexible shaft upper joint are sequentially arranged from left to right, and two ends of the universal flexible shaft are respectively connected with the flexible shaft lower joint and the flexible shaft upper joint through the flexible shaft lower joint connecting device and the flexible shaft upper joint connecting device;
the flexible shaft lower joint and the flexible shaft upper joint are respectively connected with two non-concentric rotating structure devices which need to realize electric and signal transmission; threading holes are formed in the universal flexible shaft, the flexible shaft lower joint and the flexible shaft upper joint which can be electrically connected with the universal torque transmission device for underground use;
one end of the flexible shaft upper joint is connected with the rotor, a connector socket is arranged at the end part of one end of the flexible shaft upper joint connected with the rotor, and the other end of the flexible shaft upper joint is in interference fit connection with one end of the universal flexible shaft and is connected with the flexible shaft upper joint connecting device used for transmitting torque;
the other end of the universal flexible shaft is in interference fit connection with one end of a flexible shaft lower joint, the universal flexible shaft is connected with the flexible shaft lower joint through a flexible shaft lower joint connecting device used for transmitting torque, and the other end of the flexible shaft lower joint is connected with a bearing support transmission shaft and is in contact compression with the end face of a contact type slip ring to realize electric and signal connection;
a plurality of mud holes are formed in one end, connected with the bearing support transmission shaft, of the lower flexible shaft joint, and the mud holes are communicated with mud holes of the bearing support transmission shaft in the bearing support transmission shaft; be located the mud hole with the universal axle of scratching with scratch between the axle lower clutch junction scratch the epaxial lower clutch of last wiring cavity that is equipped with, the wiring cavity respectively with the universal axle of scratching inside through wires hole with scratch the inside through wires hole intercommunication of epaxial top connection, the entrance of wiring cavity is equipped with wiring hole end cap and end cap sealing washer.
2. An electrically connectable downhole universal torque transmission device according to claim 1, wherein the end portions of the two ends of the universal flexible shaft are provided with boss structures, and the boss structures are sealed with the flexible shaft lower joint through the first sealing ring a and the flexible shaft upper joint through the second sealing ring b.
3. An electrically connectable downhole universal torque transmission according to claim 1, wherein the flexible shaft lower joint connection means and the flexible shaft upper joint connection means are made of high strength stainless steel, and the diameters of the flexible shaft lower joint connection means and the flexible shaft upper joint connection means are proportional to the amount of torque to be transmitted.
4. The downhole electrically-connectable universal torque transmission device according to any one of claims 1 to 3, further comprising a bushing for preventing high-speed slurry flowing through the slurry channel from eroding the inner wall of the bearing support transmission shaft, wherein the bushing is disposed between the upper joint of the flexible shaft and the bearing support transmission shaft, the bushing is sealed with the lower joint of the flexible shaft by a bushing sealing ring a, and the bushing is sealed with the bearing support transmission shaft by a bushing sealing ring b, so as to prevent slurry from invading into a contact slip ring between the lower joint of the flexible shaft and the bearing support transmission shaft, thereby causing failure of electrical connection and signal communication.
5. The device of claim 1, wherein the universal flexible shaft is made of titanium alloy, the universal flexible shaft realizes universal joint and transmits torque, the eccentric displacement of the flexible shaft upper joint and the flexible shaft lower joint is 0-7mm, and the universal flexible shaft transmits torque in the range of 0-14000 Nm.
6. An electrically connectable universal torque transmission according to claim 4 wherein the material of the bushing is cemented carbide.
7. An electrically connectable downhole universal torque coupling according to claim 1 wherein said end of said flexible shaft upper joint is sealed to the rotor by a flexible shaft upper joint seal.
8. An electrically connectable universal torque coupling according to claim 1, wherein the lower flexible shaft joint is sealed from the bearing support transmission shaft by a lower flexible shaft joint seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910446856.4A CN110130840B (en) | 2019-05-27 | 2019-05-27 | Underground electric connection-available universal torque transmission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910446856.4A CN110130840B (en) | 2019-05-27 | 2019-05-27 | Underground electric connection-available universal torque transmission device |
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| CN110130840A CN110130840A (en) | 2019-08-16 |
| CN110130840B true CN110130840B (en) | 2020-06-12 |
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| CN201910446856.4A Active CN110130840B (en) | 2019-05-27 | 2019-05-27 | Underground electric connection-available universal torque transmission device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112523700B (en) * | 2020-11-30 | 2022-11-18 | 中国石油天然气集团有限公司 | Wire passing universal shaft assembly and wire passing method |
| CN112523682B (en) * | 2020-11-30 | 2022-07-19 | 中国石油天然气集团有限公司 | Thread-passing screw drill and thread-passing method |
| CN112523679B (en) * | 2020-11-30 | 2022-07-19 | 中国石油天然气集团有限公司 | Wire passing transmission shaft assembly and wire passing method |
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| CN203603779U (en) * | 2013-11-15 | 2014-05-21 | 北京石油机械厂 | Articulated cardan shaft |
| CN106639898A (en) * | 2017-01-04 | 2017-05-10 | 北京赛诺凤凰能源科技有限公司 | Line-passing screw drilling tool |
| CN108979523A (en) * | 2018-06-28 | 2018-12-11 | 中国科学院地质与地球物理研究所 | Power transmission and apparatus for transmitting signal between a kind of screw drilling tool stator and rotor |
| CN109326938A (en) * | 2018-08-24 | 2019-02-12 | 中国科学院地质与地球物理研究所 | One kind is with brill instrument conducting slip ring device |
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