CN111691817A - Direct-drive type electric top drive for well drilling - Google Patents
Direct-drive type electric top drive for well drilling Download PDFInfo
- Publication number
- CN111691817A CN111691817A CN202010740998.4A CN202010740998A CN111691817A CN 111691817 A CN111691817 A CN 111691817A CN 202010740998 A CN202010740998 A CN 202010740998A CN 111691817 A CN111691817 A CN 111691817A
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- bearing
- box body
- main shaft
- motor
- top drive
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- 238000005553 drilling Methods 0.000 title claims abstract description 27
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 9
- 238000005457 optimization Methods 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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Classifications
-
- 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
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
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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)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a direct-drive type electric top drive for well drilling, and relates to the field of top drive devices of petroleum drilling technologies. The invention comprises an upper box body, a motor, a main shaft and a bearing box body, wherein the upper part of the motor is connected with the upper box body, the lower part of the motor is connected with the bearing box body, and a motor rotor is connected with the main shaft; the upper part of the upper box body is provided with a lifting ring, a disc brake assembly is arranged in the upper box body, and a brake disc of the disc brake assembly is connected to the main shaft through a taper sleeve; the upper box body is connected with the bearing box body through the bearing upright columns at four corners of the motor, a bearing is arranged at the inner upper part of the bearing box body and connected to the main shaft, a thrust bearing is arranged at the lower end of the bearing, and the thrust bearing is connected to the main shaft. Compared with the prior art, the invention has the advantages that the motor shell is not loaded, the structure is compact, no reduction gearbox is provided, and the energy is saved and the consumption is reduced.
Description
Technical Field
The invention relates to the field of top driving devices of petroleum drilling technologies, in particular to a direct-drive type electric top drive for well drilling.
Background
The top drive device is a drilling device which directly drives a drilling tool from the top of a derrick to perform rotary drilling and can complete various drilling operations such as circulating drilling fluid, connecting a stand, screwing on and unscrewing, reversely reaming and the like. With the increase of deep wells, ultra-deep wells and complex wells in the oil and gas exploration and development process, the requirement for top drive at home and abroad is more and more urgent, and the top drive device is the standard configuration of a drilling machine. However, the top drive device has very severe working environment and is often subjected to complex working conditions such as load, torque, jumping or drill jamming, and the like, so the requirement on the top drive structure is very strict.
At present, a mechanical variable transmission mechanism is adopted in a traditional top drive device at home and abroad, the problems of high lubrication difficulty and poor sealing performance of the mechanical variable transmission mechanism generally exist, and investigation finds that more than 40 percent of equipment failure problems of the top drive device are caused by the reasons.
Disclosure of Invention
The invention aims to solve the problems of high top drive lubrication difficulty, high sealing failure rate, complex structure of a mechanical variable-speed transmission mechanism and high processing technology requirement caused by the fact that a top drive device is often subjected to complex working conditions of load, torque, skip or drill jamming under the severe working environment.
The invention is realized by the following technologies: a direct-drive electric top drive for well drilling comprises a main shaft, a motor and a motor stator shell; the motor is arranged in the motor stator shell, the upper end of the motor stator shell is provided with an upper box body, and the lower end of the motor stator shell is provided with a bearing box body; the main shaft sequentially penetrates through the upper box body, the motor in the motor stator shell and the bearing box body from top to bottom; a motor rotor in the motor is connected with the main shaft through a motor elastic taper sleeve; due to the adoption of the structure, the motor directly drives the main shaft to drill in a rotating mode, a transmission gear box structure is omitted compared with the traditional top drive, the problem of oil leakage caused by traditional lubrication, sealing and the like is solved, the equipment use failure rate and the maintenance intensity are obviously reduced, and the motor directly drives the main shaft to reduce the intermediate transmission link of the gear box, so that the transmission efficiency can be improved, the transmission loss is reduced, and the working efficiency is improved.
A disc brake assembly is arranged in the upper box body; a brake disc in the disc brake assembly is connected with the main shaft through a brake elastic taper sleeve; by adopting the structure, the brake elastic taper sleeve is tightly matched with the brake elastic taper sleeve, so that the motor rotor is fixedly connected with the main shaft, the brake disc of the disc brake assembly is fixedly connected with the main shaft, the damage of structures such as key connection or spline connection to the main shaft is avoided, and the strength and the stability of the main shaft structure are ensured.
The upper part in the bearing box body is provided with a bearing, and the bearing is connected with the main shaft; the lower part in the bearing box body is provided with a lower righting bearing, and the lower righting bearing is connected with the main shaft.
The lower part in the upper box body is provided with a thrust bearing, the thrust bearing is connected with the main shaft, the upper part of the thrust bearing in the upper box body is provided with an upper righting bearing, and the upper righting bearing is connected with the main shaft.
By adopting the structure, the lower end of the disc brake assembly is simultaneously provided with the upper centering bearing and the thrust bearing, so that the strength, the stability and the reliability of top drive torsion and top drive in a vibration state caused by complex working conditions in the top drive drilling process are ensured; and the influence on the bearing and the main shaft when the disc brake assembly acts is ensured.
As optimization, lifting ear plates are arranged on two sides of the upper box body; a lifting ring is arranged above the lifting lug plate; the lifting ring is hinged with the lifting lug plate. Because the lifting ring is driven on the top and the lifting lug plate are movably connected by the structure, the movable connection part of the lifting ring is positioned above the gravity center of the top drive, and the top drive can be effectively prevented from side turning due to unstable gravity center.
As optimization, a bearing upright post is arranged between the lifting lug plate and the bearing box body; the bearing upright posts are provided with 4 bearing upright posts and are respectively arranged at four end corners of the lifting lug plate and the bearing box body. Go up the upper portion of box and connect the promotion otic placode, the lower part is connected with the bearing stand, the bearing stand is fixed on the bearing box, when using the top to drive and bore, the load that the main shaft bore is driven on the top, the moment of torsion, jump brill, complicated operating mode such as card brill, transmit for the bearing stand through the bearing box, the bearing stand transmits for the bail, avoided motor casing to bear above-mentioned complicated operating mode, make motor casing only bear the moment of torsion of self and the dead weight of motor, consequently motor casing thickness attenuate, motor weight greatly reduced, guaranteed the intensity that the structure bore the load is driven on the top simultaneously again, promote the reliability that the top was driven.
Preferably, a cooling fan and a junction box are arranged on the outer side of the motor stator shell.
As optimization, a cylinder is fixed outside a main shaft at the lower end of the bearing box body; the lower end of the cylinder is provided with a rotating body; and a bearing ring is arranged on the lower end main shaft of the rotating body.
In conclusion, the beneficial effects of the invention are as follows: 1. the direct-drive electric top drive for well drilling adopts a motor positioned between an upper box body and a bearing box body, wherein a lifting lug plate is arranged on the upper box body and is connected with a lifting ring, the lifting ring is connected with the bearing box body through a bearing upright post, and a bearing and an upper centering bearing are arranged in the bearing box body and are connected to a main shaft. In the drilling process, the load, the torque, the jumping drill, the drill sticking and other complex working conditions borne by the main shaft are transmitted to the bearing box body through the bearing, and the bearing box body is transmitted to the lifting ring through the bearing upright post. This structure has effectively avoided motor body to bear load, and the moment of torsion jumps and bores, blocks complicated operating modes such as brill, has reduced motor casing thickness, has alleviateed weight, has practiced thrift the cost. 2. The motor directly drives the main shaft to drill in a rotating mode, gear box transmission in a traditional top drive structure is omitted, the problem of oil leakage caused by traditional lubrication, sealing and the like is solved, and the use failure rate and the maintenance strength of equipment are remarkably reduced. 3. The device directly drives the main shaft to rotate by the alternating current variable frequency motor, and compared with the traditional top drive, the device cancels a mechanical speed change mechanism, and realizes the mutual fusion of the motor and the machinery. Compared with the transmission top drive of the same model, the continuous drilling operation torque is obviously improved, the equipment use failure rate and the maintenance intensity are obviously reduced, the capacity of dealing with drilling accidents is enhanced, and the device has stronger reliability and economy and good popularization background.
Drawings
Fig. 1 is a schematic diagram of the structural principle of the present invention.
Fig. 2 is a schematic structural diagram of the appearance of the invention.
In the figure: 1. the brake device comprises a lifting ring, 2, a brake disc, 3, a disc brake assembly, 4, an upper box body, 5, a cooling fan, 6, a motor, 7, a motor stator shell, 8, a motor elastic taper sleeve, 9, a motor rotor, 10, a bearing, 11, a bearing box body, 12, a cylinder body, 13, a rotating body, 14, a bearing ring, 15, a brake elastic taper sleeve, 16, an upper centering bearing, 17, a thrust bearing, 18, a junction box, 19, a lifting lug plate, 20, a lower centering bearing, 21, a main shaft, 22 and a bearing upright post.
Detailed Description
A direct-drive electric top drive for well drilling comprises a main shaft 21, a motor 6 and a motor stator shell 7; the motor 6 is arranged in the motor stator shell 7, the upper end of the motor stator shell 7 is provided with the upper box body 4, and the lower end of the motor stator shell 7 is provided with the bearing box body 11; the main shaft 21 sequentially penetrates through the upper box body 4, the motor 6 in the motor stator shell 7 and the bearing box body 11 from top to bottom; a motor rotor 9 in the motor 6 is connected with a main shaft 21 through a motor elastic taper sleeve 8; a disc brake assembly 3 is arranged in the upper box body 4; the brake disc 2 in the disc brake component 3 is connected with the main shaft 21 through the brake elastic taper sleeve 15; a bearing 10 is arranged at the upper part in the bearing box body 11, and the bearing 10 is connected with a main shaft 21; the lower part in the bearing box body 11 is provided with a lower righting bearing 20, and the lower righting bearing 20 is connected with a main shaft 21;
preferably, a thrust bearing 17 is arranged at the lower part in the upper box body 4, the thrust bearing 17 is connected with a main shaft 21, an upper righting bearing 16 is arranged at the upper part of the thrust bearing 17 in the upper box body 4, and the upper righting bearing 16 is connected with the main shaft 21.
As optimization, lifting ear plates 19 are arranged on two sides of the upper box body 4; a lifting ring 1 is arranged above the lifting lug plate 19; the lifting ring 1 is hinged with a lifting lug plate 19.
As optimization, a bearing upright post 22 is arranged between the lifting lug plate 19 and the bearing box body 11; the bearing upright columns 22 are provided with 4 bearing upright columns and are respectively arranged at four end corners of the lifting lug plates 19 and the bearing box body 11.
Preferably, a cooling fan 5 and a junction box 18 are arranged on the outer side of the motor stator shell 7.
As optimization, a cylinder 12 is fixed outside a lower end main shaft 21 of the bearing box body 11; a rotating body 13 is arranged at the lower end of the cylinder 12; a bearing ring 14 is arranged on a lower end main shaft 21 of the rotating body 13.
The working principle is as follows:
as shown in figures 1 and 2: the lifting ring comprises a lifting ring 1, wherein the lifting ring 1 is movably hinged with a lifting lug plate 19 through a pin shaft. The lifting lugs 19 are arranged on the upper box 4 and are cast together by casting. The upper portion is provided with the dish subassembly 3 of stopping in the upper box 4, and the brake disc 2 in the subassembly 3 of stopping of dish is connected with main shaft 21 through braking elasticity taper sleeve 15.
The inner lower part of the upper box body 4 is provided with an upper righting bearing 16 and a thrust bearing 17, and the upper righting bearing 16 and the thrust bearing 17 are connected to a main shaft 21.
The lower end of the upper box body 4 is connected with a motor stator shell 7 in the motor 6, and the upper box body 4 is connected with the motor stator shell 7 by adopting high-strength bolts.
The motor rotor 9 in the motor 6 is connected with the main shaft 21 through the motor elastic taper sleeve 8. The motor stator housing 7 in the motor 6 is provided with a cooling fan 5 and a junction box 18.
The upper box body 4 is connected with the bearing box body 11 through 4 bearing upright posts 22. The upper part of the bearing box body 11 is provided with a bearing 10, and the bearing 10 is connected to a main shaft 21. The lower part of the bearing box body 11 is provided with a lower righting bearing 20, and the lower righting bearing 20 is connected to a main shaft 21. The lower end of the bearing box body 11 is fixed with a cylinder body 12, the outer side of the cylinder body 12 is provided with a rotating body 13, and the rotating body 13 transmits the weight to the main shaft 21 through a bearing ring 14 to finish the pipe processing work.
When the direct-drive electric top drive is used for drilling, the motor 6 drives the motor rotor 9 to drive the main shaft 21 to rotate, and complex working conditions such as drilling load, torque, jumping, jamming and the like borne by the main shaft 21 are transmitted to the bearing box body 11 through the bearing 10. The bearing box 11 is transferred to the lifting lug 19 on the upper box 4 through the bearing upright 22 and further to the lifting ring 1 through the pin. The motor 6 during operation dispels the heat through the cooling blower 5 that is equipped with on the motor stator casing 7, and the fan dispels the heat to motor inside simultaneously, can also dispel the heat to last box 4. The influence on the motor 6 caused by overhigh heat generated when the disc brake component 3 brakes is avoided.
When the rotary body 13 of the direct drive electric top drive is used for pipe treatment, the weight of the drill received by the rotary body 13 is transmitted to the main shaft 21 through the load ring 14. The main shaft 21 is transmitted to the bearing box body 11 through the bearing 10, and the bearing box body 11 is transmitted to the lifting lug plate 19 on the upper box body 4 through the bearing upright post 22 and then transmitted to the lifting ring 1 through the pin shaft.
Claims (6)
1. A direct-drive electric top drive for well drilling is characterized in that: comprises a main shaft (21), a motor (6) and a motor stator shell (7); the motor (6) is arranged in the motor stator shell (7), the upper end of the motor stator shell (7) is provided with the upper box body (4), and the lower end of the motor stator shell is provided with the bearing box body (11); the main shaft (21) sequentially penetrates through the upper box body (4), the motor (6) in the motor stator shell (7) and the bearing box body (11) from top to bottom; a motor rotor (9) in the motor (6) is connected with the main shaft (21) through a motor elastic taper sleeve (8); a disc brake assembly (3) is arranged in the upper box body (4); a brake disc (2) in the disc brake assembly (3) is connected with a main shaft (21) through a brake elastic taper sleeve (15); a bearing (10) is arranged at the upper part in the bearing box body (11), and the bearing (10) is connected with a main shaft (21); the lower part of the bearing box body (11) is provided with a lower righting bearing (20), and the lower righting bearing (20) is connected with a main shaft (21).
2. The direct-drive electric top drive for well drilling according to claim 1, wherein: the inner lower part of the upper box body (4) is provided with a thrust bearing (17), the thrust bearing (17) is connected with a main shaft (21), the upper part of the thrust bearing (17) in the upper box body (4) is provided with an upper righting bearing (16), and the upper righting bearing (16) is connected with the main shaft (21).
3. The direct-drive electric top drive for well drilling according to claim 1, wherein: lifting lug plates (19) are arranged on two sides of the upper box body (4); a lifting ring (1) is arranged above the lifting lug plate (19); the lifting ring (1) is hinged with the lifting lug plate (19).
4. The direct drive type electric top drive for well drilling according to claim 3, wherein: a bearing upright post (22) is arranged between the lifting lug plate (19) and the bearing box body (11); the bearing upright columns (22) are provided with 4 bearing upright columns and are respectively arranged at four end corners of the lifting lug plates (19) and the bearing box body (11).
5. The direct-drive electric top drive for well drilling according to claim 1, wherein: and a cooling fan (5) and a junction box (18) are arranged on the outer side of the motor stator shell (7).
6. The direct-drive electric top drive for well drilling according to claim 1, wherein: a cylinder (12) is fixed outside a lower end main shaft (21) of the bearing box body (11); a rotating body (13) is arranged at the lower end of the cylinder body (12); and a bearing ring (14) is arranged on a lower end main shaft (21) of the rotating body (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010740998.4A CN111691817A (en) | 2020-07-29 | 2020-07-29 | Direct-drive type electric top drive for well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010740998.4A CN111691817A (en) | 2020-07-29 | 2020-07-29 | Direct-drive type electric top drive for well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111691817A true CN111691817A (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010740998.4A Pending CN111691817A (en) | 2020-07-29 | 2020-07-29 | Direct-drive type electric top drive for well drilling |
Country Status (1)
| Country | Link |
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| CN (1) | CN111691817A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050269889A1 (en) * | 2004-06-04 | 2005-12-08 | Tessier Lynn P | Frameless switched reluctance motor and application as a top drive for a rotary pump |
| CN101710772A (en) * | 2009-11-05 | 2010-05-19 | 无锡哈电电机有限公司 | High-power positive pressure variable frequency speed regulation asynchronous motor special for top drive |
| CN201778651U (en) * | 2010-04-21 | 2011-03-30 | 中国石油化工集团 | Motor-driven drilling top driving force faucet device |
| CN102373879A (en) * | 2010-08-12 | 2012-03-14 | 四川宏华石油设备有限公司 | Top driver |
| CN102386735A (en) * | 2011-11-22 | 2012-03-21 | 永济新时速电机电器有限责任公司 | Compact-type high-power top drive variable frequency speed control asynchronous motor |
| CN103615192A (en) * | 2013-11-26 | 2014-03-05 | 河北华北石油荣盛机械制造有限公司 | Hydraulic top driving device of drilling machine |
| CN106533098A (en) * | 2016-11-30 | 2017-03-22 | 中车永济电机有限公司 | Variable frequency speed regulation asynchronous motor with mechanical brake device for top drive |
| CN207504730U (en) * | 2017-12-01 | 2018-06-15 | 江西工埠机械有限责任公司 | The assembly tooling of the super-huge stator core stamping sheet of GBM motors |
| CN208939720U (en) * | 2018-09-30 | 2019-06-04 | 四川宏华电气有限责任公司 | A kind of direct-drive type top-drive motor |
-
2020
- 2020-07-29 CN CN202010740998.4A patent/CN111691817A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050269889A1 (en) * | 2004-06-04 | 2005-12-08 | Tessier Lynn P | Frameless switched reluctance motor and application as a top drive for a rotary pump |
| CA2509180C (en) * | 2004-06-04 | 2008-09-09 | Msi Machineering Solutions Inc. | A frameless switched reluctance motor and application as a top drive for a rotary pump |
| CN101710772A (en) * | 2009-11-05 | 2010-05-19 | 无锡哈电电机有限公司 | High-power positive pressure variable frequency speed regulation asynchronous motor special for top drive |
| CN201778651U (en) * | 2010-04-21 | 2011-03-30 | 中国石油化工集团 | Motor-driven drilling top driving force faucet device |
| CN102373879A (en) * | 2010-08-12 | 2012-03-14 | 四川宏华石油设备有限公司 | Top driver |
| CN102386735A (en) * | 2011-11-22 | 2012-03-21 | 永济新时速电机电器有限责任公司 | Compact-type high-power top drive variable frequency speed control asynchronous motor |
| CN103615192A (en) * | 2013-11-26 | 2014-03-05 | 河北华北石油荣盛机械制造有限公司 | Hydraulic top driving device of drilling machine |
| CN106533098A (en) * | 2016-11-30 | 2017-03-22 | 中车永济电机有限公司 | Variable frequency speed regulation asynchronous motor with mechanical brake device for top drive |
| CN207504730U (en) * | 2017-12-01 | 2018-06-15 | 江西工埠机械有限责任公司 | The assembly tooling of the super-huge stator core stamping sheet of GBM motors |
| CN208939720U (en) * | 2018-09-30 | 2019-06-04 | 四川宏华电气有限责任公司 | A kind of direct-drive type top-drive motor |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200922 |
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| RJ01 | Rejection of invention patent application after publication |