CN204082907U - Magnetic suspension bearing for turbodrill saves - Google Patents
Magnetic suspension bearing for turbodrill saves Download PDFInfo
- Publication number
- CN204082907U CN204082907U CN201420514234.3U CN201420514234U CN204082907U CN 204082907 U CN204082907 U CN 204082907U CN 201420514234 U CN201420514234 U CN 201420514234U CN 204082907 U CN204082907 U CN 204082907U
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- Prior art keywords
- ring
- bearing
- magnet ring
- main shaft
- thrust bearing
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Abstract
The utility model discloses a kind of magnetic suspension bearing for turbodrill to save, comprise thrust bearing and move magnet ring, the magnetostatic ring of thrust bearing, main shaft, inner core, dynamic magnet ring back-up ring, radial bearing internal magnetic ring, radial bearing outer magnetic ring and urceolus.Described main shaft is arranged in inner core, and adopt hollow-core construction, two ends connect drill bit and turbine section respectively; Described thrust bearing moves magnet ring and is all clamped on main shaft, and described main shaft is provided with shoulder, adopts interstage sleeve to separate between magnet ring and magnet ring; The magnetostatic ring of described thrust bearing is embedded in inner core inwall, and described inner core adopts and splits form, and inwall is provided with magnet ring mounting groove, and the magnetostatic ring of described thrust bearing also adopts the form of splitting; Described radial bearing internal magnetic ring clamping is arranged on main shaft; Described radial bearing outer magnetic ring is clamped on outer tube inner wall.The magnetic suspension bearing joint of the utility model design is rational in infrastructure, increases substantially the working life of turbodrill, has Security well and practicability.
Description
Technical field
The utility model relates to the field mud motors such as a kind of oil field, gas field, and specifically a kind of magnetic suspension bearing for turbodrill saves, and belongs to field of petroleum machinery.
Background technique
Turbodrill is the down-hole fluid motor that a kind of hydraulic energy by mud changes mechanical energy into, breaks rock, reach the object of drilling well by the rotary actuation drill bit of rotor.Because down-hole geological condition is complicated, drillng operation operating mode is severe, and suffered by turbodrill bearing, load is large and uneven, adds the wearing and tearing of landwaste in the corrosion of drilling mud and mud simultaneously, the working life of turbodrill bearing is very short, and this also causes the application of turbodrill to be restricted.Therefore, improving the life-span of turbodrill bearing, is the key factor improving turbodrill bulk life time.
At present, the method improving the employing of turbodrill drilling efficiency mainly contains: 1. the independent Cheng Jie of bearing, can directly change, and reduces the repair time in drilling process; 2. adopt all-carbide steel or other high-abrasive materials, slow down thrust bearing and lost efficacy due to wearing and tearing; 3. bearing contact surfaces is inlayed PDC sheet.These methods improve the service time of turbodrill to a certain extent or improve drilling efficiency, but this basic problem of bearing failure caused because of wearing and tearing is not resolved.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of magnetic suspension bearing for turbodrill and saves, in order to solve the problem causing bearing failure owing to mutually wearing and tearing between bearing.
The technological scheme that the utility model provides is: the magnetic suspension bearing for turbodrill saves, and comprises thrust bearing and moves magnet ring, the magnetostatic ring of thrust bearing, main shaft, inner core, dynamic magnet ring back-up ring, radial bearing internal magnetic ring, radial bearing outer magnetic ring and urceolus.Described main shaft is arranged in inner core, and adopt hollow-core construction, two ends connect drill bit and turbine section respectively; Described thrust bearing moves magnet ring and is all clamped on main shaft, and described main shaft is provided with shoulder, adopts interstage sleeve to separate before magnet ring and magnet ring; The magnetostatic ring of described thrust bearing is embedded in inner core inwall, and described inner core adopts and splits form, and inwall is provided with magnet ring mounting groove, the magnetostatic ring of described thrust bearing also different forms; Described radial bearing internal magnetic ring clamping is arranged on main shaft; Described radial bearing outer magnetic ring is clamped on outer tube inner wall.
Described main shaft, thrust bearing move magnet ring, dynamic magnet ring back-up ring and the installation of radial bearing internal magnetic ring and tighten up as a whole, are suspended among described inner core.Integrated suspension formula structure can effectively absorb impulsive load suffered by drill bit, slows down the damage of drill bit.
It is relative with thrust bearing magnetostatic ring magnetic pole that described thrust bearing moves magnet ring, there is certain gap between magnet ring and magnet ring, utilizes the repulsive force between same pole to reach the effect of bearing thrust load.Be not in contact with each other before magnet ring, utilize magnetic force to bear thrust load, prevent the mutual wearing and tearing between bearing, thus substantially increase the working life of bearing.
The structural type that the magnetostatic ring of described thrust bearing and inner core all adopt two halves to dock.Be convenient to the installation with main shaft of inlaying of the magnetostatic ring of thrust bearing, also effectively can shorten the time of the maintenance of bearing joint and magnet ring replacing simultaneously, improve drilling efficiency.
Described radial bearing internal magnetic ring is installed on main shaft two ends respectively, relative with described radial bearing outer magnetic ring magnetic pole, utilizes the repulsive force carrying main shaft force in radial between magnetic pole.Be provided with gap between interior outer magnetic ring, effectively can reduce the wearing and tearing of bearing under the effect of radial impact load and collision.
Described inner core interface is provided with seal groove, can effectively prevent drilling mud from being infiltrated by docking port, causes corrosion and the wearing and tearing of bearing magnet ring, even the blocking in magnet ring gap, affects the normal operation of bearing joint; Also can prevent the loss of mud simultaneously, improve the utilization ratio of drilling hydraulic.
Compared with prior art, the utility model has following characteristics and advantage.
1. utilize the repulsive force between like pole to bear axis or the radial load of drilling tool, avoid the wearing and tearing between bearing and collision, substantially increase the working life of turbodrill.
2. main shaft integrated suspension formula structure, can effectively absorb impulsive load suffered by drill bit, slow down the damage of drill bit, thus extends the bit change-over cycle in drilling process, improves drilling efficiency.
3. the bearing magnet ring used in the utility model all adopts Nd-Fe-Bo permanent magnet material, and it has excellent magnetic and mechanical property well, can ensure the safe and reliable operation that bearing saves.
4. inner core interface establishes seal groove, can effectively prevent drilling fluid to the corrosion of bearing magnet ring and wearing and tearing, improves the working life of bearing joint.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the utility model thrust bearing schematic diagram.
Fig. 3 is the utility model radial bearing schematic diagram.
Label in figure is expressed as: 1, urceolus; 2, radial bearing outer magnetic ring; 3, main shaft; 4, inner core; 5, thrust bearing moves magnet ring; 6, the magnetostatic ring of thrust bearing; 7, dynamic magnet ring back-up ring; 8, radial bearing internal magnetic ring.
Embodiment
In order to the technical characteristics of the present utility model of understanding clearly and effect thereof, below in conjunction with embodiment and the attached figure that shines, the utility model is further illustrated.
Embodiment
With reference to Fig. 1 ~ 3, the magnetic suspension bearing for turbodrill saves, and comprises thrust bearing and moves magnet ring 5, the magnetostatic ring 6 of thrust bearing, main shaft 3, inner core 4, dynamic magnet ring back-up ring 7, radial bearing internal magnetic ring 8, radial bearing outer magnetic ring 2 and urceolus 1.It is characterized in that: described main shaft 3 is arranged in inner core 4, and two ends connect drill bit and turbine section respectively; Described thrust bearing moves magnet ring 5 and is all clamped on main shaft 3, and described main shaft 3 is provided with shoulder, adopts back-up ring to separate before magnet ring and magnet ring; The magnetostatic ring 6 of described thrust bearing is embedded in inner core 4 inwall; Described inner core 4 adopts two halves docking structure, and inwall is provided with magnet ring mounting groove, and the magnetostatic ring 6 of described thrust bearing also adopts two halves docking structure; Described radial bearing internal magnetic ring 8 clamping is arranged on main shaft 3; Described radial bearing outer magnetic ring 2 is clamped on urceolus 1 inwall.
Described thrust bearing moves magnet ring 5 and is uniformly distributed and is arranged on main shaft 3, separates between magnet ring with dynamic magnet ring back-up ring 7.
Described main shaft 3, thrust bearing move magnet ring 5, dynamic magnet ring back-up ring 7 and radial bearing internal magnetic ring 8 installation and tighten up as a whole, are suspended among described inner core 4.
Described thrust bearing moves magnet ring 5 and is placed between the magnetostatic ring 6 of thrust bearing, and relative with thrust bearing magnetostatic ring 6 magnetic pole, is provided with certain gap between magnet ring and magnet ring.
The structural type that the magnetostatic ring 6 of described thrust bearing and inner core 4 all adopt two halves to dock.
Described radial bearing internal magnetic ring 8 is installed on main shaft 3 two ends respectively, and inner ring surface and outer ring surface are respectively magnet ring N, S pole; Described radial bearing outer magnetic ring 2 is linked in outside bearing internal magnetic ring 8, and magnetic pole is relative, is clamped on urceolus 1 inwall.
Described inner core 4 interface is provided with seal groove.
During work, the upper end of bearing joint is threaded with the lower end of turbine section, and the splined shaft saved by bearing is overlapped with turbine section upper spline and coordinates, and the rotation of turbine is delivered to the main shaft of bearing joint, further driving and bearing save the bit that lower end is connected, rock-breaking and well-drilling.Meanwhile, drilling fluid directly enters drill bit by the center flow channels of main shaft, flows out from bit port, at the bottom of auxiliary rock and flushing manhole.When drill bit is subject to impacting, load is delivered to bearing joint by coupling shaft, utilizes thrust bearing group to move repulsive force between magnet ring and magnetostatic ring and bears thrust load, effectively prevent internal impact and the wearing and tearing of bearing.Equally, the repulsive force in radial bearing utilizes between outer magnetic ring bears the radial load of main shaft, while the collision avoiding Bearing inner and wearing and tearing, also effectively can maintain the balance quality of turbodrill drilling well, play effect well to directed drilling.
Claims (6)
1. the magnetic suspension bearing for turbodrill saves, comprise thrust bearing and move magnet ring (5), the magnetostatic ring of thrust bearing (6), main shaft (3), inner core (4), dynamic magnet ring back-up ring (7), radial bearing internal magnetic ring (8), radial bearing outer magnetic ring (2) and urceolus (1), it is characterized in that: described main shaft (3) is arranged in inner core (4), and two ends connect drill bit and turbine section respectively; Described thrust bearing moves magnet ring (5) and is all clamped on main shaft (3), and described main shaft (3) is provided with shoulder, adopts dynamic magnet ring back-up ring (7) to separate before magnet ring and magnet ring; The magnetostatic ring of described thrust bearing (6) is embedded in inner core (4) inwall, and described inner core (4) adopts opening structure, and inwall is provided with magnet ring mounting groove, and the magnetostatic ring of described thrust bearing (6) also adopts opening structure; Described radial bearing internal magnetic ring (8) clamping is arranged on main shaft (3); Described radial bearing outer magnetic ring (2) is clamped on urceolus (1) inwall.
2. magnetic suspension bearing joint according to claim 1, it is characterized in that: described main shaft (3), thrust bearing move magnet ring (5), dynamic magnet ring back-up ring (7) and radial bearing internal magnetic ring (8) installation and tighten up as a whole, are suspended among described inner core (4).
3. magnetic suspension bearing joint according to claim 1, is characterized in that: it is relative with the magnetostatic ring of thrust bearing (6) magnetic pole that described thrust bearing moves magnet ring (5), is provided with certain gap between magnet ring and magnet ring.
4. magnetic suspension bearing joint according to claim 1, is characterized in that: the structural type that the magnetostatic ring of described thrust bearing (6) and inner core (4) all adopt two halves to dock.
5. magnetic suspension bearing joint according to claim 1, is characterized in that: described radial bearing internal magnetic ring (8) is installed on main shaft (3) two ends respectively, and inner ring surface and outer ring surface are respectively magnet ring N, S pole; Described radial bearing outer magnetic ring (2) is linked in bearing internal magnetic ring (8) outside, and magnetic pole is relative, is clamped on urceolus (1) inwall.
6. magnetic suspension bearing joint according to claim 4, is characterized in that: described inner core (4) interface is provided with seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420514234.3U CN204082907U (en) | 2014-09-09 | 2014-09-09 | Magnetic suspension bearing for turbodrill saves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420514234.3U CN204082907U (en) | 2014-09-09 | 2014-09-09 | Magnetic suspension bearing for turbodrill saves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082907U true CN204082907U (en) | 2015-01-07 |
Family
ID=52175630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420514234.3U Expired - Fee Related CN204082907U (en) | 2014-09-09 | 2014-09-09 | Magnetic suspension bearing for turbodrill saves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251262A (en) * | 2014-09-09 | 2014-12-31 | 骄阳山水（江苏）油气工程技术有限公司 | Magnetic bearing section for turbine drill |
-
2014
- 2014-09-09 CN CN201420514234.3U patent/CN204082907U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251262A (en) * | 2014-09-09 | 2014-12-31 | 骄阳山水（江苏）油气工程技术有限公司 | Magnetic bearing section for turbine drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20210909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |