CN103855892A - Permanent magnet synchronous motor device directly driving drill bit - Google Patents
Permanent magnet synchronous motor device directly driving drill bit Download PDFInfo
- Publication number
- CN103855892A CN103855892A CN201310417821.0A CN201310417821A CN103855892A CN 103855892 A CN103855892 A CN 103855892A CN 201310417821 A CN201310417821 A CN 201310417821A CN 103855892 A CN103855892 A CN 103855892A
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- permanent magnet
- synchronous motor
- magnet synchronous
- drill bit
- protector
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Abstract
The invention discloses a permanent magnet synchronous motor device directly driving a drill bit. A rotating shaft of a permanent magnet synchronous motor is a hollow shaft, an outer shell and the hollow shaft of the permanent magnet synchronous motor extend upwards, the permanent magnet synchronous motor and a downhole controller are sequentially arranged between the outer shell and the hollow shaft from bottom to top, a cable is connected with the permanent magnet synchronous motor through the downhole controller, and the upper end and the lower end of the hollow shaft are in sealing rotation connection with the outer shell. A protector arranged between the outer shell and the hollow shaft is arranged on the downhole controller, and the protector is a precipitation type or capsule type protector. Motor oil is arranged in the protector, the cable is connected with a motor control cabinet, and the motor control cabinet transmits a power source and control signals to the permanent magnet synchronous motor via the downhole controller through the cable. A stator slot of the permanent magnet synchronous motor is a straight slot. Due to the fact that the output end of the permanent magnet synchronous motor can be directly connected with the drill bit, the drill bit is directly driven to work below thousands of meters, and the phenomena of breaking, falling and the like of a drill column can be effectively avoided.
Description
Technical field
The present invention relates to the permanent magnet synchronous electric machine of a kind of oil drilling equipment, particularly a kind of direct driving drill bit.
Background technology
At present, what petroleum industry adopted is that power source is placed on to ground, extremely gives underground drill bit by drill string by transmission of power.There is following shortcoming and defect in this device: power-equipment drives drill bit work indirectly by km is above, and starting torque is larger, loss a large amount of power, reduced system effectiveness; In the process of drilling well, also exist the phenomenons such as drill string breaks, takes off.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of permanent magnet synchronous electric machine of the direct driving drill bit being directly connected with drill bit.
Technical scheme of the present invention is done in such a way that the permanent magnet synchronous electric machine of direct driving drill bit, includes permagnetic synchronous motor, also includes downhole controller; The rotating shaft of described permagnetic synchronous motor is hollow shaft, and shell and the hollow shaft of permagnetic synchronous motor upwards extend, and is followed successively by from lower to upper permagnetic synchronous motor, downhole controller between shell and hollow shaft; Cable is connected with permagnetic synchronous motor by downhole controller; Hollow shaft upper and lower side and body seal are rotationally connected.
Also include protector, the protector being located between shell and hollow shaft is positioned at above downhole controller.
Described protector is precipitating type or capsule-type protector.
In described protector, be provided with dynamo oil.
Above described protector, be also provided with cable bucket.
Described cable is connected with motor controlling cabinet, and motor controlling cabinet passes to permagnetic synchronous motor by power supply and control signal through downhole controller by cable.
The stator slot of described permagnetic synchronous motor is straight trough.
Technique effect of the present invention is: because permagnetic synchronous motor output of the present invention can directly be connected with drill bit, below km, directly drive drill bit work, the drill string of indirect driving more than km is saved, with slow-speed of revolution transmitting large torque, reduce the energy loss of drill string, improve the operating efficiency of system, can also effectively avoid the phenomenons such as drill string breaks, takes off.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail, as shown in the figure, permagnetic synchronous motor 5 rotating shafts of the present invention are hollow shaft 6, the shell of permagnetic synchronous motor 5 and hollow shaft 6 upwards extend, and are followed successively by from lower to upper permagnetic synchronous motor 5, downhole controller 4, protector 3 between shell and hollow shaft 6; Ground control cubicle 1 is look at power supply and control signal is transferred to permagnetic synchronous motor 5 through downhole controller 4 by electricity, controls permagnetic synchronous motor 5 and works; Hollow shaft 6 upper and lower sides and body seal are rotationally connected.The cable bucket 2 being located between shell and the hollow shaft 6 of permagnetic synchronous motor 5 is positioned at above protector 3.Between permagnetic synchronous motor and downhole controller, between downhole controller and protector, protector and cable be provided with bearing between logical.
Permagnetic synchronous motor comprises motor housing, rotor, stator and permanent magnet.Motor adopts H class F insulation, and shell protection grade is IPX8.Stator and rotor adopt Wuhan Iron and Steel Plant 50TW600 silicon steel sheet stamping-out, are overrided to form, and flute profile adopts straight trough design, can effectively reduce harmonic field, thereby reduce vibration and the noise of motor.Rotor magnetic steel adopts 35EH, and high-coercive force magnet steel can resistance to 180 DEG C of high temperature, and the year attenuation rate of magnetic field intensity is less than 2 ‰.Extend the useful life of motor.Downhole controller can receive after the order of ground control cubicle, controls permagnetic synchronous motor and drives drill bit.In protector 4, be full of dynamo oil, can protect drilling fluid not enter permagnetic synchronous motor inside.Protector 3 is precipitating type or capsule-type protector.
When the present invention works, permagnetic synchronous motor 5, under the control of ground control cubicle 1, drives the drill bit work on permagnetic synchronous motor output, and drilling fluid upwards flows along hollow shaft 6, that is to say along arrow 7 and upwards flows.
Claims (7)
1. the permanent magnet synchronous electric machine that directly drives drill bit, includes permagnetic synchronous motor, it is characterized in that: also include downhole controller; The rotating shaft of described permagnetic synchronous motor is hollow shaft, and shell and the hollow shaft of permagnetic synchronous motor upwards extend, and is followed successively by from lower to upper permagnetic synchronous motor, downhole controller between shell and hollow shaft; Cable is connected with permagnetic synchronous motor by downhole controller; Hollow shaft upper and lower side and body seal are rotationally connected.
2. the permanent magnet synchronous electric machine of direct driving drill bit according to claim 1, is characterized in that: also include protector, the protector being located between shell and hollow shaft is positioned at above downhole controller.
3. the permanent magnet synchronous electric machine of direct driving drill bit according to claim 2, is characterized in that: described protector is precipitating type or capsule-type protector.
4. the permanent magnet synchronous electric machine of direct driving drill bit according to claim 3, is characterized in that: in described protector, be provided with dynamo oil.
5. the permanent magnet synchronous electric machine of direct driving drill bit according to claim 2, is characterized in that: above described protector, be also provided with cable bucket.
6. the permanent magnet synchronous electric machine of the direct driving drill bit described in one of them according to claim 1 to 5, it is characterized in that: described cable is connected with motor controlling cabinet, motor controlling cabinet passes to permagnetic synchronous motor by power supply and control signal through downhole controller by cable.
7. the permanent magnet synchronous electric machine of direct driving drill bit according to claim 6, is characterized in that: the stator slot of described permagnetic synchronous motor is straight trough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310417821.0A CN103855892A (en) | 2013-09-15 | 2013-09-15 | Permanent magnet synchronous motor device directly driving drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310417821.0A CN103855892A (en) | 2013-09-15 | 2013-09-15 | Permanent magnet synchronous motor device directly driving drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103855892A true CN103855892A (en) | 2014-06-11 |
Family
ID=50863203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310417821.0A Pending CN103855892A (en) | 2013-09-15 | 2013-09-15 | Permanent magnet synchronous motor device directly driving drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103855892A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507808A (en) * | 2016-01-11 | 2016-04-20 | 东方电气集团东方电机有限公司 | Underground drilling tool motor |
| CN110294331A (en) * | 2019-06-14 | 2019-10-01 | 浙江天新智能研究院有限公司 | A kind of reversion feeding device of permanent magnetism hollow shaft motor driving |
| CN113565449A (en) * | 2021-07-21 | 2021-10-29 | 西南石油大学 | Cable connecting device used between electric pulse-mechanical composite rock breaking drill bit and drilling tool |
-
2013
- 2013-09-15 CN CN201310417821.0A patent/CN103855892A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507808A (en) * | 2016-01-11 | 2016-04-20 | 东方电气集团东方电机有限公司 | Underground drilling tool motor |
| CN105507808B (en) * | 2016-01-11 | 2018-10-09 | 东方电气集团东方电机有限公司 | A kind of down-hole equipment motor |
| CN110294331A (en) * | 2019-06-14 | 2019-10-01 | 浙江天新智能研究院有限公司 | A kind of reversion feeding device of permanent magnetism hollow shaft motor driving |
| CN113565449A (en) * | 2021-07-21 | 2021-10-29 | 西南石油大学 | Cable connecting device used between electric pulse-mechanical composite rock breaking drill bit and drilling tool |
| CN113565449B (en) * | 2021-07-21 | 2023-08-22 | 西南石油大学 | Cable connection device used between electric pulse-mechanical composite rock breaking drill bit and drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |
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| WD01 | Invention patent application deemed withdrawn after publication |