CN201868989U - Insulating structure for motor and generator bearing - Google Patents
Insulating structure for motor and generator bearing Download PDFInfo
- Publication number
- CN201868989U CN201868989U CN2010206339971U CN201020633997U CN201868989U CN 201868989 U CN201868989 U CN 201868989U CN 2010206339971 U CN2010206339971 U CN 2010206339971U CN 201020633997 U CN201020633997 U CN 201020633997U CN 201868989 U CN201868989 U CN 201868989U
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- CN
- China
- Prior art keywords
- bearing
- insulating
- motor
- steel ring
- insulation
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- Expired - Lifetime
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Abstract
The utility model discloses an insulating structure for a motor and generator bearing, which relates to the technical field of motor insulation equipment, and comprises a bearing, two insulating rings, an insulating steel ring and a bolt, wherein the bearing is mounted on a motor or generator spindle bearing bush, the two insulating rings are mounted on two axial end faces of the bearing, the insulating steel ring is arranged on an outer ring of the bearing, the bolt is used for fixing an inner cover and an outer cover of the bearing and penetrates into an insulting sleeve through an insulating washer, and the insulting sleeve penetrates through the two insulating rings. The insulating performance of the bearing can be improved, maintenance and manufacturing costs are reduced, process installation and detachment are convenient, model selection of the bearing is not limited, the service life of the bearing is prolonged, and the insulating structure is wide in applicable range and especially applicable to large and medium sized motors.
Description
Technical field
The utility model relates to the electrical machine insulation equipment technical field, exactly relates to a kind of insulation system that is applicable to wind-driven generator and variable frequency motor bearing.
Background technology
Reply bearing galvano-cautery at present, the measure of isolating commonly used of insulating has to bearing: insulation bearing, insulation bearing chamber and insulated end cover.
Wherein insulation bearing is divided into outer ring coating, internal layer coating and uses three kinds of forms of ceramic material rolling element; And the insulation bearing chamber is to adopt to paste polytetrafluoroethylene film.
These two kinds of structures of insulation bearing and insulation bearing chamber cause insulating coating and film to damage in assembling and unloading process easily, especially are unfavorable for the protection of bearing.
Adopt the design of insulated end cover more; generally be to adopt insulating material to cut off being connected between bearing and the end cap; as publication number is CN101728894A; the Chinese patent that open day is on June 9th, 2010 discloses a kind of insulated end cover; this insulated end cover structure is to be provided with radially and axial insulating case at bearing outer ring; the insulating case of this insulation system is simple in structure; easy to manufacture; and energy better protect bearing and motor; but its insulating case axially has shoulder, therefore processing, process Installation is had relatively high expectations.
The utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of insulation system that is applicable to wind-driven generator and variable frequency motor bearing, the utility model can improve the bearing insulation performance, reduce the maintenance manufacturing cost, and process Installation, convenient disassembly make the bearing type selecting unrestricted, applied widely, bearing prolongs useful life, especially is fit to use on large and middle size motor.
The utility model is realized by adopting following technical proposals:
A kind of motor and dynamo bearing insulation system of being used for, it is characterized in that: comprise the bearing that is installed on motor or the generator shaft bearing holder (housing, cover), be installed in two dead rings of bearing shaft to both ends of the surface, be arranged on the insulation steel ring of bearing outer ring, with the bolt that is used for fixing internal bearing cover and enclosing cover, bolt penetrates in the insulating sleeve through the insulation packing ring, and insulating sleeve runs through described two dead rings.
Described insulation steel ring is made up of steel ring and insulating barrier, and insulating barrier is fixed on the steel ring outer wall.
Described steel ring outer wall has two circle grooves, and insulating barrier scalds and wraps on the groove.
The material of described insulating barrier is an epoxy novolac glass grey cloth.
Compared with prior art, the beneficial effects of the utility model show:
1, in the utility model, employing is arranged on the insulation steel ring of bearing outer ring, so just constituted bearing radial insulation, be installed in two dead rings of bearing shaft to both ends of the surface and adopt, bolt penetrates in the insulating sleeve through the insulation packing ring, and insulating sleeve runs through into described two dead rings, so just formed the axial dielectric of bearing, motor just can be blocked the current path of main shaft-bearing-end cap-support when operation, can protect bearing, prolong the motor scheduled maintenance period; Improve the bearing insulation performance, reduced the maintenance manufacturing cost, and process Installation, convenient disassembly, make the bearing type selecting unrestricted, applied widely, bearing prolongs useful life, especially is fit to use on large and middle size motor.The utility model is particularly useful for half-and-half directly driving the bearing insulation of megawatt-level permanent magnet wind-driven generator.
2, in the utility model, have groove on the steel ring of insulation steel ring, insulating barrier is fixed on the steel ring outer wall by the mode of scalding bag, and better effects if, the material of insulating barrier adopt epoxy novolac glass grey cloth, and insulation effect is further enhanced.
Description of drawings
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments, wherein:
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the insulation steel ring schematic diagram that is installed on the bearing outer ring
Mark among the figure:
1, bearing, 2, first dead ring, 3, steel ring, 4, insulating barrier, 5, insulating washer, 6, insulating sleeve, 7, second dead ring, 8, bolt.
Embodiment
Embodiment 1
The utility model discloses a kind of motor and dynamo bearing insulation system of being used for, comprise the bearing 1 that is installed on the generator shaft bearing holder (housing, cover), be installed in two dead rings of bearing 1 axial both ends of the surface, be arranged on the insulation steel ring of bearing 1 outer ring, with the bolt 8 that is used for fixing bearing 1 inner cap and enclosing cover, bolt 8 penetrates in the insulating sleeve 6 through insulation packing ring 5, and insulating sleeve 6 runs through described two dead rings.
With reference to Figure of description, preferred forms of the present utility model is as follows:
This is novel by the bearing 1 that is installed on the generator shaft bearing holder (housing, cover), dead ring in bearing 1 axial both ends of the surface, the insulating barrier 4 that twine the steel ring 3 of bearing 1 outer ring and steel ring 3 outsides, insulating washer 5 between the inside and outside lid set bolt 8 and insulating sleeve 6 are formed, and have so just formed the integral insulation between bearing 1 and end cap.
What accompanying drawing 1 was represented is cross sectional view of the present invention, and what Fig. 2 represented is the insulation steel ring that is installed on bearing 1 outer ring.
Bearing 1 outer ring is equipped with the insulation steel ring, and its insulation steel ring is made up of steel ring 3 and insulating barrier 4; One first dead ring 2 and second dead ring 7 are set being close to bearing 1 both ends of the surface respectively; The inside and outside lid of bolt 8 rigid bearings 1 by having insulating washer 5 and insulating sleeve 6.
The steel ring that insulate as shown in Figure 2 is made up of steel ring 3 and insulating barrier 4, wherein steel ring 3 adopts the structural carbon steel manufacturing, steel ring 3 outsides have two circle grooves, scald the certain thickness epoxy novolac glass grey cloth of bag again in the outer ring as insulating barrier 4, have so just constituted the radial insulation of bearing 1; Bearing 1 both ends of the surface are provided with glass cloth laminated sheet and are pressed into first dead ring 2 and second dead ring 7, and perforate on the dead ring is fixed the inside and outside lid of bearing 1 by the bolt 8 that has insulating washer 5 and insulating sleeve 6, has so formed the axial dielectric of bearing 1.When motor moves, just can block main shaft like this---the current path of bearing 1-end cap-support, can protect bearing 1, prolong the motor scheduled maintenance period.
Claims (4)
1. one kind is used for motor and dynamo bearing insulation system, it is characterized in that: comprise the bearing (1) that is installed on motor or the generator shaft bearing holder (housing, cover), be installed in axially two dead rings of both ends of the surface of bearing (1), be arranged on the insulation steel ring of bearing (1) outer ring, with the bolt (8) that is used for fixing bearing (1) inner cap and enclosing cover, bolt penetrates in the insulating sleeve (6) through insulation packing ring (5), and insulating sleeve (6) runs through described two dead rings.
2. motor and the dynamo bearing insulation system of being used for according to claim 1 is characterized in that: described insulation steel ring is made up of steel ring (3) and insulating barrier (4), and insulating barrier (4) is fixed on steel ring (3) outer wall.
3. motor and the dynamo bearing insulation system of being used for according to claim 2 is characterized in that: described steel ring (3) outer wall has two circle grooves, and insulating barrier (4) scalds and wraps on the groove.
4. motor and the dynamo bearing insulation system of being used for according to claim 1 is characterized in that: the material of described insulating barrier (4) is an epoxy novolac glass grey cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206339971U CN201868989U (en) | 2010-11-30 | 2010-11-30 | Insulating structure for motor and generator bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206339971U CN201868989U (en) | 2010-11-30 | 2010-11-30 | Insulating structure for motor and generator bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201868989U true CN201868989U (en) | 2011-06-15 |
Family
ID=44140132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206339971U Expired - Lifetime CN201868989U (en) | 2010-11-30 | 2010-11-30 | Insulating structure for motor and generator bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201868989U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9590468B2 (en) | 2012-10-08 | 2017-03-07 | Exro Technologies Inc. | Electrical machines such as generators and motors |
-
2010
- 2010-11-30 CN CN2010206339971U patent/CN201868989U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9590468B2 (en) | 2012-10-08 | 2017-03-07 | Exro Technologies Inc. | Electrical machines such as generators and motors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
|
| CX01 | Expiry of patent term |