CN108336855B - High-voltage bushing type motor oil leakage prevention device - Google Patents
High-voltage bushing type motor oil leakage prevention device Download PDFInfo
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- CN108336855B CN108336855B CN201810369757.6A CN201810369757A CN108336855B CN 108336855 B CN108336855 B CN 108336855B CN 201810369757 A CN201810369757 A CN 201810369757A CN 108336855 B CN108336855 B CN 108336855B
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- tube
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- 230000002265 prevention Effects 0.000 title claims abstract description 27
- 239000010705 motor oil Substances 0.000 title claims description 18
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 37
- 239000003921 oil Substances 0.000 claims description 107
- 239000007788 liquid Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010992 reflux Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses an oil leakage prevention device of a high-voltage bushing type motor, and belongs to the field of high-voltage motors. The invention comprises a breather and a balance tube, wherein the breather and the balance tube are communicated with an oil chamber of a motor, and the breather is arranged on a bearing bush cover of the motor; a through balance hole is formed in the motor end cover, one end of the balance pipe is communicated with the oil chamber, and the other end of the balance pipe penetrates through the balance hole; the respirator comprises a breathing tube and a breathing cover which are matched, the bottom of the breathing tube is communicated with the oil chamber, and the circumferential side wall of the breathing cover is provided with a through exhaust hole. The invention overcomes the defects that the bearing bush motor is easy to leak oil and affects the service life in the prior art, and can effectively improve the oil leakage problem and improve the service performance and the service life of the motor by effectively modifying the motor.
Description
Technical Field
The invention relates to the technical field of high-voltage motors, in particular to an oil leakage prevention device of a high-voltage bushing type motor.
Background
At present, the high-voltage bushing motor is applied to various fields of national industrial production, and has the advantages of convenience in maintenance, long service life and the like, so that the user is approved, but when the bushing motor operates, a motor rotor is a rotating part with extremely large moment of inertia, lubricating oil in an oil groove is thrown up by a bushing oil slinger and then is dispersed by flowing gas, so that finer oil drop oil mist is formed, meanwhile, the oil temperature and the bushing temperature can correspondingly rise along with the operation of a unit, positive pressure is generated in a bearing box, and the oil mist is caused to escape along with the flowing of air and leaks out of an oil shield of the unit.
When the existing high-pressure bearing bush motor operates, oil slingers and the internal pressure of an oil tank form an internal-external oil pressure difference. When the lubricating oil passes through the oil baffle of the sealing ring (labyrinth ring), a throttle is generated once through the shrinkage cavity formed by one oil baffle tooth, the leakage pressure of the oil is reduced once, and the oil pressure of the outer oil baffle chamber is smaller than that of the former oil baffle chamber. And by analogy, if the number of teeth of the oil gear is larger, the throttle times are larger, the oil leakage quantity is smaller, each oil gear tooth is provided with an inward oil return hole, oil in each oil gear returns into the bearing box (the shoe oil box) through the oil hole, but when the leakage quantity is larger than the reflux quantity, the oil gear starts to leak oil, and the service life of the motor is influenced. How to effectively avoid oil leakage is the direction of research in the industry all the time.
Technical improvements relating to the problem of oil leakage of motors have been disclosed in the prior art by searching, for example, in chinese patent application No.: 2013208739667, filing date: the invention is named as 2013, 12, 29: the utility model provides a high pressure bush formula motor leak protection oil axle bush device, this application discloses a high pressure bush formula motor leak protection oil axle bush device, including axle bush body, axle bush base, axle bush seal assembly and lubricated grease chamber, the axle bush body is fixed in the axle bush base, and the cavity between axle bush body and the axle bush base is lubricated grease chamber, and axle bush seal assembly fixed connection is equipped with first oil blanket on the axle bush base, and the axle bush device still includes leak protection oil seal assembly, leak protection oil seal assembly and axle bush seal assembly fixed connection, sets up the second oil blanket on the leak protection oil seal assembly. According to the application, the anti-oil leakage sealing assembly comprising the second oil seal is installed at the position, close to the bearing bush sealing assembly, of the motor rotor, and the added main component can be permanently installed and fixed with the original bearing bush sealing assembly of the motor, so that the service life of the motor rotor and the service life of the bearing bush coexist. However, the application only sets up sealing assembly through adding and avoids the oil leak phenomenon, and the in-service use effect still has the room of optimizing promotion.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defects that the bushing motor is easy to leak oil and affects the service life in the prior art, and provides the high-voltage bushing motor oil leakage prevention device, which can effectively improve the oil leakage problem and improve the service performance and the service life of the motor by effectively modifying the motor.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the invention relates to an oil leakage prevention device of a high-voltage bushing type motor, which comprises a breather and a balance pipe, wherein the breather and the balance pipe are communicated with an oil chamber of the motor; a through balance hole is formed in the motor end cover, one end of the balance pipe is communicated with the oil chamber, and the other end of the balance pipe penetrates through the balance hole; the respirator comprises a breathing tube and a breathing cover which are matched, the bottom of the breathing tube is communicated with the oil chamber, and the circumferential side wall of the breathing cover is provided with a through exhaust hole.
Further, the breathing tube comprises a tube body, a tube cavity is formed in the tube body, a tube head is arranged at the upper part of the tube body, and the top of the tube head is provided with a matching wall for supporting the breathing cover; the breathing cover comprises a cover body, a cover cavity is arranged in the cover body, and the exhaust holes are formed in the circumferential side wall of the cover body.
Furthermore, the lower part of the cover body is provided with an embedded wall matched with the matching wall, and the embedded wall is embedded in the matching wall.
Further, the exhaust hole is provided obliquely in the height direction of the cover.
Further, the included angle between the length extending direction of the exhaust hole and the horizontal plane is 15 degrees to 35 degrees.
Further, a plurality of exhaust holes are uniformly arranged on the circumferential side wall of the cover body at intervals.
Further, the bottom of the embedded wall is a serrated bottom wall.
Further, a sponge is placed within the lumen.
Further, the matching wall and the inner wall of the pipe body are connected through an inclined inner wall, and the inclined inner wall gradually inclines outwards from bottom to top.
Further, the embedded wall is positioned on the inner side of the lower part of the cover body, and the part of the cover body beyond the embedded wall is supported by the top of the matching wall.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) The high-voltage bushing type motor oil leakage prevention device comprises the breather and the balance pipe which are communicated with the oil chamber of the motor, and the oil leakage problem of the motor can be effectively reduced through the matching arrangement of the breather and the balance pipe, so that the long-term safe and stable operation of the motor is ensured, and the service life of the motor is prolonged.
(2) According to the oil leakage prevention device for the high-voltage bushing type motor, the through balance hole is formed in the motor end cover, one end of the balance pipe is connected with the oil chamber, and the other end of the balance pipe penetrates through the balance hole, so that the oil chamber inside the balance pipe can be communicated with the outside, the balance of the pressure difference between the inside and the outside is facilitated, and the oil leakage problem is avoided.
(3) The invention relates to an oil leakage prevention device of a high-voltage bearing bush type motor, which comprises a breathing pipe and a breathing cover, wherein the circumferential side wall of the breathing cover is provided with a through exhaust hole, the exhaust hole can effectively perform air outlet and exhaust, the breathing cover is prevented from being propped against oil gas, and the oil gas leakage can be avoided.
(4) According to the high-voltage bushing type motor oil leakage prevention device, the exhaust hole is obliquely arranged in the height direction of the cover body, so that internal gas can be conveniently discharged, oil gas can be effectively prevented from leaking from the exhaust hole, and the oil gas is prevented from leaking.
(5) According to the high-pressure bushing type motor oil leakage prevention device, the plurality of exhaust holes are uniformly formed in the circumferential side wall of the cover body at intervals, so that uniform circumferential exhaust can be realized, uniform stability of exhaust is ensured, and further, top leakage of oil is avoided.
(6) According to the high-voltage bushing type motor oil leakage prevention device, the bottom of the embedded wall is the serrated bottom wall, and the serrated design is not only beneficial to accelerating condensation and backflow of oil gas, but also beneficial to preventing the oil gas from leaking out of a gap between the matched wall and the cover body, so that the oil leakage prevention effect is further ensured.
(7) According to the oil leakage prevention device for the high-voltage bearing bush type motor, the sponge which is irregularly distributed is filled in the pipe cavity along the height direction, the pipe cavity is not blocked by the sponge, the ascending condensation effect of oil gas is not affected, the sponge can effectively buffer the ascending of the oil gas, and the oil gas is prevented from being sprayed to the top at a high speed and overflows from the top, so that the oil leakage prevention effect is further enhanced.
Drawings
FIG. 1 is a schematic diagram of a high-voltage bushing motor oil leakage prevention device;
FIG. 2 is a schematic view of the structure of the respirator of the present invention.
Reference numerals in the schematic drawings illustrate:
100. an oil chamber; 200. a motor end cover; 210. a balance hole; 300. a bearing bush cover; 400. a respirator; 500. a balance tube;
410. A breathing tube; 411. a tube body; 412. a lumen; 413. a tube head; 414. a mating wall; 415. an inclined inner wall;
420. a respiratory cap; 421. a cover body; 422. a cover cavity; 423. an embedded wall; 424. a toothed bottom wall; 425. and an exhaust hole.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention is further described below with reference to examples.
Example 1
As shown in fig. 1 and 2, the high-pressure bushing type motor oil leakage preventing device of the present embodiment includes a breather 400 and a balance pipe 500 which are communicated with an oil chamber 100 of a motor, wherein the breather 400 is provided on a bushing cover 300 of the motor; the motor end cover 200 is provided with a through balance hole 210, one end of the balance pipe 500 is communicated with the oil chamber 100, and the other end of the balance pipe 500 passes through the balance hole 210; the structure and assembly relationship of the oil chamber 100, the motor end cover 200 and the bearing cover 300 of the axial shoe motor in this embodiment are all known in the industry, and will not be described herein. In this embodiment, the balance hole 210 leading to the inner oil baffle is formed on the motor end cover 200, the balance tube 500 is arranged on the inner oil chamber 100, the U-shaped balance tube 500 is arranged above the oil liquid level of the oil chamber 100, and the balance tube 500 passes out of the oil chamber 100 and finally leads to the outside of the motor end cover 200, so that the inner oil chamber 100 can be communicated with the outside, thereby being beneficial to balancing the internal and external pressure differences and avoiding the oil leakage problem.
In this embodiment, the respirator 400 includes a breathing tube 410 and a breathing cover 420 that are matched, the bottom of the breathing tube 410 is communicated with the oil chamber 100, a through exhaust hole 425 is formed in the circumferential side wall of the breathing cover 420, specifically, the breathing tube 410 includes a tube body 411, a tube cavity 412 is formed in the tube body 411, a tube head 413 is arranged at the upper part of the tube body 411, the width of the tube head 413 is greater than that of the tube body 411, and the top of the tube head 413 is a matching wall 414 for supporting the breathing cover 420; correspondingly, the breathing cover 420 includes a cover body 421, a cover cavity 422 is formed in the cover body 421, an exhaust hole 425 is formed in a circumferential side wall of the cover body 421, an embedded wall 423 matched with the matching wall 414 is formed at a lower portion of the cover body 421, the embedded wall 423 is embedded in the matching wall 414, as shown in fig. 2, the embedded wall 423 is located at an inner side of a lower portion of the cover body 421, and a portion of the cover body 421 beyond the embedded wall 423 is supported by a top of the matching wall 414.
When the embodiment is used, the breathing cover 420 is covered above the breathing tube 410, namely the embedded wall 423 is attached in the matching wall 414, the top of the matching wall 414 is supported below the cover 421 at the outer side of the embedded wall 423, so that the breathing cover 420 is tightly matched with the breathing tube 410, the height of the breathing tube 410 can be set to 75-400mm, high-temperature oil gas in the oil chamber 100 continuously rises to the cover cavity 422 through the pipe cavity 412 and finally flows back through condensation, and outward leakage and overflow can be effectively prevented; the vent 425 is provided to allow effective venting during the oil and gas ascent and backflow process, preventing oil and gas from leaking out of the upper top cap 420.
The embodiment can effectively reduce the oil leakage problem of the motor through the cooperation setting of the breather 400 and the balance pipe 500, ensure the long-term safe and stable operation of the motor and prolong the service life of the motor.
Example 2
The basic structure of the high-voltage bushing motor oil leakage prevention device of this embodiment is the same as that of embodiment 1, and further, in this embodiment, the exhaust hole 425 is obliquely arranged in the height direction of the cover 421, specifically, the included angle between the length extending direction of the exhaust hole 425 and the horizontal plane is 15 °, the oblique arrangement of the exhaust hole 425 is convenient for the exhaust of internal gas, the leakage of oil gas from the exhaust hole 425 can be effectively prevented, the leakage of oil gas is avoided, and according to the actual production requirement, the exhaust hole 425 can be opened into a hole shape, a chute shape and the like, and the effective improvement of the exhaust effect is realized by controlling the opening size of the exhaust hole 425. In this embodiment, a plurality of exhaust holes 425 are uniformly arranged on the circumferential side wall of the cover 421 at intervals, so that circumferential uniform exhaust can be realized, uniform stability of exhaust is ensured, and further leakage of the oil liquid from the top is avoided.
Example 3
The basic structure of the high-voltage bushing type motor oil leakage prevention device of this embodiment is the same as that of embodiment 2, and further, in this embodiment, the bottom of the embedded wall 423 is a serrated toothed bottom wall 424, when in use, high-temperature oil gas continuously rises through the pipe cavity 412, and the serrated design of the serrated bottom wall 424 is not only helpful to accelerate condensation and reflux of the oil gas, but also helps to prevent the oil gas from leaking out of the gap between the breathing cover 420 and the breathing tube 410, namely, the oil gas is prevented from leaking out of the gap between the matching wall 414 and the cover 421, and further ensures the oil leakage prevention effect.
In this embodiment, the matching wall 414 is connected with the inner wall of the pipe 411 through an inclined inner wall 415, the inclined inner wall 415 gradually inclines outwards from bottom to top, and the arrangement of the inclined inner wall 415 gradually increases the space of the top cavity of the pipe cavity 412, and is in a funnel-shaped structure, so that the condensation effect of high-temperature oil gas is enhanced, and the condensed oil is returned to the pipe cavity 412.
Example 4
The basic structure of the high-voltage bushing motor oil leakage prevention device of this embodiment is the same as that of embodiment 3, and further, in this embodiment, a sponge is placed in the pipe cavity 412, that is, the pipe cavity 412 is filled with the sponge irregularly distributed along the height direction, the sponge does not block the pipe cavity 412, the ascending condensation effect of oil gas is not affected, but the sponge can effectively buffer the ascending of the oil gas, prevent the high-speed jet flow to the top and overflow from the top, and further enhance the oil leakage prevention effect.
The oil leakage phenomenon of the motor can be effectively reduced by utilizing the oil leakage prevention device of the embodiment, and the specific using method is as follows: the breather 400 and the balance pipe 500 are arranged, the high-temperature oil gas continuously rises in the pipe cavity 412, after being absorbed by the sponge buffer, the gas is discharged outwards through the exhaust hole 425, and the oil gas is blocked by the breather cover 420 and the toothed bottom wall 424 to finally condensate and reflux; meanwhile, the balance pipe 500 communicates the internal oil chamber 100 with the outside to balance the internal and external pressure differences, thereby effectively avoiding oil leakage.
Example 5
The basic structure of the high-voltage bushing-type motor oil leakage prevention device of this embodiment is the same as that of embodiment 4, except that the included angle between the length extension direction of the exhaust hole 425 and the horizontal plane in this embodiment is 35 °.
Example 6
The basic structure of the high-voltage bushing-type motor oil leakage prevention device of this embodiment is the same as that of embodiment 4, except that the included angle between the length extension direction of the exhaust hole 425 and the horizontal plane in this embodiment is 30 °.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (5)
1. The utility model provides a high pressure axle bush formula motor leak protection oil device which characterized in that: comprises a breather (400) and a balance pipe (500) which are communicated with an oil chamber (100) of the motor, wherein the breather (400) is arranged on a bearing bush cover (300) of the motor; a through balance hole (210) is formed in the motor end cover (200), one end of a balance pipe (500) is communicated with the oil chamber (100), the balance pipe (500) is arranged above the oil liquid level of the oil chamber (100), and the other end of the balance pipe (500) penetrates through the balance hole (210); the respirator (400) comprises a breathing tube (410) and a breathing cover (420) which are matched, the bottom of the breathing tube (410) is communicated with the oil chamber (100), and the circumferential side wall of the breathing cover (420) is provided with a through exhaust hole (425); the breathing tube (410) comprises a tube body (411), a tube cavity (412) is arranged in the tube body (411), a tube head (413) is arranged at the upper part of the tube body (411), and the top of the tube head (413) is provided with a matching wall (414) for supporting a breathing cover (420); the breathing cover (420) comprises a cover body (421), a cover cavity (422) is formed in the cover body (421), and an exhaust hole (425) is formed in the circumferential side wall of the cover body (421); the lower part of the cover body (421) is provided with an embedded wall (423) matched with the matching wall (414), and the embedded wall (423) is embedded in the matching wall (414); the bottom of the embedded wall (423) is a serrated bottom wall (424); the matching wall (414) is connected with the inner wall of the pipe body (411) through an inclined inner wall (415), and the inclined inner wall (415) gradually inclines outwards from bottom to top; the embedded wall (423) is positioned on the inner side of the lower part of the cover body (421), and the part of the cover body (421) beyond the embedded wall (423) is supported by the top of the matching wall (414).
2. The high-voltage bushing motor oil leakage prevention device according to claim 1, wherein: the exhaust hole (425) is arranged obliquely in the height direction of the cover body (421).
3. The high-voltage bushing motor oil leakage prevention device according to claim 2, wherein: the included angle between the length extending direction of the exhaust hole (425) and the horizontal plane is 15-35 degrees.
4. The high-voltage bushing motor oil leakage prevention device according to claim 1, wherein: a plurality of exhaust holes (425) are uniformly arranged on the circumferential side wall of the cover body (421) at intervals.
5. A high-voltage bushing motor oil leakage preventer according to any one of claims 1-4, wherein: a sponge is placed within the lumen (412).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810369757.6A CN108336855B (en) | 2018-04-23 | 2018-04-23 | High-voltage bushing type motor oil leakage prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810369757.6A CN108336855B (en) | 2018-04-23 | 2018-04-23 | High-voltage bushing type motor oil leakage prevention device |
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| Publication Number | Publication Date |
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| CN108336855A CN108336855A (en) | 2018-07-27 |
| CN108336855B true CN108336855B (en) | 2024-09-13 |
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| CN201810369757.6A Active CN108336855B (en) | 2018-04-23 | 2018-04-23 | High-voltage bushing type motor oil leakage prevention device |
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| CN108336855A (en) | 2018-07-27 |
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