CN204597693U - Motor bearings anti-oil leakage device - Google Patents
Motor bearings anti-oil leakage device Download PDFInfo
- Publication number
- CN204597693U CN204597693U CN201520299534.9U CN201520299534U CN204597693U CN 204597693 U CN204597693 U CN 204597693U CN 201520299534 U CN201520299534 U CN 201520299534U CN 204597693 U CN204597693 U CN 204597693U
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- CN
- China
- Prior art keywords
- motor
- inner chamber
- steam hose
- bearing
- deep bead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Motor Or Generator Frames (AREA)
Abstract
A kind of motor bearings anti-oil leakage device, solve existing Bearing inner lubricating oil to pollute because pressure differential flows in motor to produce, destroy the problems such as electrical machine insulation, comprise the annular deep bead be arranged on respectively on motor inner reinforced plate and the steam hose connecting motor cavity and sliding bearing inner chamber, its technical essential is: annular deep bead adopts split type structure, the steam hose one end connecting motor cavity and sliding bearing inner chamber utilizes the sealing-in of larynx hoop on ventilating joint, the steam hose other end and internal bearing cover sealing-in; Gas passage is provided with between the inside and outside lid of bearing of sliding bearing inner chamber, the gas passage be communicated with between bearing inside and outside lid utilizes sealing-in at the steam hose of internal bearing cover and the ventilating joint that is fixed on annular deep bead, forms the ventilating return of motor cavity and sliding bearing inner chamber.Its reasonable in design, simple to operate, be convenient to installation and maintenance, effectively prevent motor leakage of oil, significantly improve the security reliability of operation, extend the useful life of motor.
Description
Technical field
The utility model relates to a kind of Oil-leakage-preventistructure structure of motor, and particularly a kind of motor bearings anti-oil leakage device of the end cover type sliding bearing for asynchronous motor, belongs to motor device field.
Background technology
Existing large and medium asynchronous motor generally adopts end cover type sliding bearing, motor oil leakage phenomenon is more serious, main cause is the circulation due to wind path in motor, the i.e. rotation of electric motor fan and rotor ventilation frid, force to be transformed into higher-pressure region so make fan flow to side, and motor cavity other all can produce negative pressuren zone everywhere, result causes bearing cavity to become relatively high pressure district.Therefore, create pressure differential between bearing cavity and motor cavity, the lubricating oil of Bearing inner, under the ordering about of pressure differential, flows into motor internal by the gap of internal bearing cover and rotor between centers, thus destroys electrical machine insulation.This not only wastes lubricating oil, also creates environmental pollution simultaneously, brings unnecessary loss to client.According to Patents reported in literature, be in " the 2 pole box type electric generator bearing with end cover leak-proof arrangement " of CN102983662A at application publication number, the structure recorded is relatively loaded down with trivial details when mounted, then breather pipe first need be connected on inner reinforced plate by outer end cap, thus make the internal diameter of inner reinforced plate too small, cause motor stator to throw shell side to entering from the other end, take installing space large, strict demand be there has also been to space simultaneously.Similar patent also has notification number to be " anti-oil leakage device for end cover type sliding bearing motor " of CN201805301U, discloses and cuts off deep bead and alleviate negative pressure by increasing thus solve Leakage.Application publication number is " a kind of Oil-leakage-preventistructure structure of motor " of CN103516103A, and disclosed structure is separated by infundibulate fan shroud motor internal and bearing, makes not produce gas exchanges between the two, and on end cap, open shutter make-up gas.Mainly seal request is high for the shortcoming that this structure exists, if sealing goes wrong, then the degree of protection of whole motor will reduce, thus shortens electrical machine insulation useful life.In sum, existing Oil-leakage-preventistructure structure of motor exists needs to carry out special change, to the problem of installing the inconvenience brought very to the basic structure of motor and installation dimension.
Utility model content
The purpose of this utility model is to provide a kind of motor bearings anti-oil leakage device, solve existing Bearing inner lubricating oil to pollute because pressure differential flows in motor to produce, destroy the problems such as electrical machine insulation, its reasonable in design, simple to operate, compared with prior art, be convenient to installation and maintenance, effectively prevent motor leakage of oil, significantly improve the security reliability of operation, extend the useful life of motor.
The technical scheme that the utility model adopts is: this motor bearings anti-oil leakage device comprises the annular deep bead be arranged on respectively on motor inner reinforced plate and the steam hose connecting motor cavity and sliding bearing inner chamber, its technical essential is: described annular deep bead adopts split type structure, subdivision faying face is fitted together by securing member, annular deep bead arranges the through hole being used for assembling fixing ventilating joint be symmetric, the steam hose one end connecting motor cavity and sliding bearing inner chamber utilizes the sealing-in of larynx hoop on ventilating joint, the steam hose other end and internal bearing cover sealing-in, the internal bearing cover of sliding bearing inner chamber is communicated with gas passage with being provided with between bearing end cover, the gas passage be communicated with between bearing inside and outside lid utilizes sealing-in at the steam hose of internal bearing cover and the ventilating joint that is fixed on annular deep bead, forms the ventilating return of motor cavity and sliding bearing inner chamber.
End and the direct sealing-in of sliding bearing inner cap of described steam hose are fixed together, and the gas passage that is communicated with between the inside and outside lid of the inner chamber of steam hose and bearing is interconnected.
The advantage that the utility model has and good effect are: because the utility model only carries out structure of modification to the annular deep bead of motor cavity and the gas passage of sliding bearing inner chamber, do not need to carry out special change to the basic structure of motor and installation dimension, the degree of protection of motor can't be affected, so its reasonable in design, simple to operate, compared with prior art, installation and maintenance is convenient to.Be exactly that annular deep bead adopts split type structure specifically, subdivision faying face is fitted together by securing member, in addition, the gas passage of the connection sliding bearing inner chamber arranged between the inside and outside lid of bearing, utilize sealing-in at the steam hose of sliding bearing inner cap and the ventilating joint that is fixed on annular deep bead, form the ventilating return of motor cavity and sliding bearing inner chamber.Balance between sliding bearing inner chamber and motor cavity by this ventilating return, the pressure differential produced because of the circulation of wind path in motor, thus make motor cavity reach identical with the air pressure of sliding bearing inner chamber, eliminate the power of leakage of oil, therefore effectively prevent motor leakage of oil, significantly improve the security reliability of operation, and then extend the useful life of motor.Therefore, the utility model solves existing Bearing inner lubricating oil and pollutes because pressure differential flows in motor to produce, and destroys the problems such as electrical machine insulation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is a kind of concrete structure schematic diagram of the present utility model;
Fig. 2 is a kind of structural representation of deep bead in Fig. 1;
Fig. 3 is the structural representation of Fig. 2 along A-A line;
Fig. 4 is a kind of structural representation of ventilating joint in Fig. 1;
Fig. 5 is the end view of Fig. 4.
In figure, sequence number illustrates: 1 bearing end cover, 2 bear boxes, 3 bearing bush, 4 internal bearing covers, 5 rotor shafts, 6 rotor fans, 7 rotor ventilation frids, 8 inner reinforced plates, 9 ventilating joints, 10 deep beads, 11 gas passages, 12 larynx hoops, 13 nuts, 14 ventilating joints, 15 steam hoses.
Embodiment
Concrete structure of the present utility model is described in detail according to Fig. 1 ~ 5.This motor bearings anti-oil leakage device comprises the parts such as the annular deep bead 10 be arranged on respectively on motor inner reinforced plate 8 and the steam hose 15 connecting motor cavity and sliding bearing inner chamber.The annular deep bead 10 be wherein arranged on motor inner reinforced plate 8 by securing member adopts split type structure, and subdivision faying face is fitted together by securing member, so that installation and maintenance.Annular deep bead 10 arranges the through hole be symmetric for assembling fixing ventilating joint 14, and namely on annular deep bead 10, (as shown in Figure 2) processes the through hole of two one-tenth 120 ° for connecting ventilating joint 14.One end double nut 13 and the annular deep bead 10 of ventilating joint 14 are fixed together, the other end of ventilating joint 14 by locking with larynx hoop 12 be connected motor cavity one end with the steam hose 15 of sliding bearing inner chamber and be connected, the other end of steam hose 15 and internal bearing cover 4 sealing-in.
Bearing end cover 1, bearing bush 3 and internal bearing cover 4 that motor sliding bearing comprises bear box 2 and fits together with bear box 2.Bearing bush 3 support rotor rotating shaft 5 in bear box 2, its complementary space is bearing cavity.Suitable distance to be had, so that steam hose 15 has enough space mounting between sliding bearing and annular deep bead 10.Wherein the internal bearing cover 4 of sliding bearing inner chamber is communicated with gas passage 11 with being provided with between bearing end cover 1.Internal bearing cover 4 processes connection screwed hole in assigned position as requested, and the end of steam hose 15 and internal bearing cover 4 directly sealing-in are fixed together, and the gas passage 11 between the inner chamber of steam hose 15 and the inside and outside lid 4,1 of bearing is interconnected.The gas passage 11 be communicated with between bearing inside and outside lid 4,1 utilizes sealing-in at the steam hose 15 of internal bearing cover 4 and the ventilating joint 9 that is fixed on annular deep bead 10, forms the ventilating return of motor cavity and sliding bearing inner chamber.Balance between sliding bearing inner chamber and motor cavity by this ventilating return, because of the circulation of wind path in motor, the i.e. rotation of rotor fan 6 and rotor ventilation frid 7, and the pressure differential produced, thus make motor cavity reach identical with the air pressure of sliding bearing inner chamber, eliminate the power of leakage of oil, therefore can effectively prevent motor leakage of oil, significantly improve the security reliability of operation, and then extend the useful life of motor.
Claims (2)
1. a motor bearings anti-oil leakage device, comprise the annular deep bead be arranged on respectively on motor inner reinforced plate and the steam hose connecting motor cavity and sliding bearing inner chamber, it is characterized in that: described annular deep bead adopts split type structure, subdivision faying face is fitted together by securing member, annular deep bead arranges the through hole being used for assembling fixing ventilating joint be symmetric, the steam hose one end connecting motor cavity and sliding bearing inner chamber utilizes the sealing-in of larynx hoop on ventilating joint, the steam hose other end and internal bearing cover sealing-in; The internal bearing cover of sliding bearing inner chamber is communicated with gas passage with being provided with between bearing end cover, connection gas passage between the inside and outside lid of bearing utilizes sealing-in at the steam hose of internal bearing cover and the ventilating joint that is fixed on annular deep bead, forms the ventilating return of motor cavity and sliding bearing inner chamber.
2. motor bearings anti-oil leakage device according to claim 1, is characterized in that: the end of described steam hose and the direct sealing-in of internal bearing cover are fixed together, and the gas passage between the inner chamber of steam hose and the inside and outside lid of bearing is interconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520299534.9U CN204597693U (en) | 2015-05-12 | 2015-05-12 | Motor bearings anti-oil leakage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520299534.9U CN204597693U (en) | 2015-05-12 | 2015-05-12 | Motor bearings anti-oil leakage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204597693U true CN204597693U (en) | 2015-08-26 |
Family
ID=53933802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520299534.9U Expired - Fee Related CN204597693U (en) | 2015-05-12 | 2015-05-12 | Motor bearings anti-oil leakage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204597693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546903A (en) * | 2016-06-23 | 2018-01-05 | 中电电机股份有限公司 | A kind of high-speed electric expreess locomotive leak-proof arrangement |
-
2015
- 2015-05-12 CN CN201520299534.9U patent/CN204597693U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546903A (en) * | 2016-06-23 | 2018-01-05 | 中电电机股份有限公司 | A kind of high-speed electric expreess locomotive leak-proof arrangement |
| CN107546903B (en) * | 2016-06-23 | 2019-08-27 | 中电电机股份有限公司 | A kind of high-speed motor leak-proof arrangement |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20200512 |