CN211287884U - Oil leakage prevention structure of machine core pressing end - Google Patents
Oil leakage prevention structure of machine core pressing end Download PDFInfo
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- CN211287884U CN211287884U CN201922278834.XU CN201922278834U CN211287884U CN 211287884 U CN211287884 U CN 211287884U CN 201922278834 U CN201922278834 U CN 201922278834U CN 211287884 U CN211287884 U CN 211287884U
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Abstract
The utility model discloses an oil leakage prevention structure that core pressed end, which comprises a movement, the core includes turbine shaft and impeller, midbody, the turbine, be provided with the bearing seal cover fixing on the turbine shaft, first sealed annular has been seted up to the first end of bearing seal cover fixing, the sealed annular of second has been seted up on the bearing seal cover fixing, install first sealing ring in the first sealed annular, install the second sealing ring in the sealed annular of second, the fitting surface of definition midbody and bearing seal cover fixing is sealed face, be provided with the sealed arch that extends to bearing seal cover fixing department on the sealed face, sealed arch is located the second end of second sealing ring, sealed arch and the at least partial coincidence of the projection of second sealing ring along cover fixing on the axial direction. The utility model discloses a set up first sealing ring, second sealing ring on the bearing seal is decided and is sheathe in, and then improved sealed effect greatly, and through set up sealed arch on the sealed face at the midbody, and then form labyrinth seal at pressure end department, further improved sealed effect.
Description
Technical Field
The utility model relates to a turbo charger technical field especially relates to an leak protection oil structure of core pressure end.
Background
The turbocharger is actually an air compressor that increases the intake air amount by compressing air. The engine uses the inertia impulse force of the exhaust gas from the engine to push the turbine in the turbine chamber, the turbine drives the coaxial impeller, the impeller presses the air sent by the air filter pipeline, and the air is pressurized and enters the cylinder.
The chinese patent with application number 201621282492.9 discloses an oil leakage prevention structure for a turbocharger, which comprises a turbine shaft, an impeller, a pressure expansion plate and a shaft seal fixed sleeve, wherein the impeller is installed at one end of the turbine shaft, the turbine shaft is arranged at the inner side of the impeller, the shaft seal fixed sleeve is arranged on the inner side of the impeller, the pressure expansion plate is arranged on the shaft seal fixed sleeve, and a boss and a groove which are used for increasing the flow resistance and the stroke of lubricating oil are arranged between the pressure expansion plate and the shaft seal fixed sleeve. However, since the rotational speed of the core part of the turbocharger is required to be higher and higher, the turbocharger of the above structure cannot meet the leakage prevention requirement at the time of high-speed operation, and thus, the problem is urgently needed to be solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned problem, a leak protection oil structure of core pressure end is provided to solve the problem that current turbocharger can't satisfy the leak protection requirement when high-speed operation.
The utility model aims at realizing through the following technical scheme:
the utility model provides an oil leakage prevention structure that end is pressed to core, includes the core, the core includes the turbine shaft and installs impeller, midbody, the turbine on the turbine shaft in proper order, defines the one end of turbine shaft installation impeller is first end, defines the one end of turbine shaft installation turbine is the second end, lie in on the turbine shaft the second end of impeller is provided with the bearing seal cover, first sealed annular has been seted up to the first end of bearing seal cover, just lie in on the bearing seal cover the second end of first sealed annular has seted up second sealed annular, install first sealing ring in the first sealed annular, install the second sealing ring in the second sealed annular, define the midbody with the fitting surface of bearing seal cover is sealed face, the outside of first sealing ring supports to press on sealed face, the outside of second sealing ring supports to press on sealed face, and a sealing bulge extending towards the shaft seal fixed sleeve is arranged on the sealing surface and close to the second sealing ring, the sealing bulge is positioned at the second end of the second sealing ring, and the projection of the sealing bulge and the second sealing ring along the axial direction of the shaft seal fixed sleeve is at least partially overlapped.
As an optimized scheme of the utility model, the bearing seal fixed sleeve is provided with and gets rid of the oil groove.
As an optimal scheme of the utility model, get rid of the oil groove including the circular arc groove that is located first end and the straight flute that is located the second end, the straight flute slope is arranged.
As an optimized scheme of the utility model, the tank bottom of the straight groove is an inclined plane, and the included angle between the inclined plane and the central axis of the shaft seal fixed sleeve is 30-60 degrees.
As an optimized scheme of the utility model, first seal ring groove second seal ring groove interval distribution.
The beneficial effects of the utility model are that, an oil leakage prevention structure of core pressure end is through deciding to sheathe in at the bearing seal and setting up first sealing ring, the second sealing ring, and then improved sealed effect greatly, and through set up sealed arch on the sealed face of midbody, and then it is sealed to form the labyrinth in pressure end department, sealed effect has further been improved, in addition, get rid of the straight flute that the oil bath has a slope to set up, and then improve and get rid of the oil effect, thereby can decide to overlap at the bearing seal and form the lubricating oil accumulation with the assembly department of floating bearing, not only increased the lubricated effect between bearing seal is decided to the cover and the floating bearing, the oil pressure of bearing seal fixed cover and midbody department has been reduced simultaneously, thereby the oil leak phenomenon has been reduced.
Drawings
FIG. 1 is a schematic view of an oil leakage preventing structure of a press end of a machine core;
fig. 2 is an enlarged view of an oil leakage preventing structure of a press end of the movement shown in fig. 1 at a.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings. It is to be understood that the embodiments described herein are merely illustrative of the present invention and are not limiting thereof.
Referring to fig. 1 and 2, fig. 1 is a schematic view of an oil leakage preventing structure at a pressure end of a machine core; fig. 2 is an enlarged view of an oil leakage preventing structure of a press end of the movement shown in fig. 1 at a.
In this embodiment, an oil leakage preventing structure of a machine core pressing end comprises a machine core, the machine core comprises a turbine shaft 1, and an impeller 2, an intermediate 3 and a turbine 4 which are sequentially installed on the turbine shaft 1, the intermediate 3 is installed on the turbine shaft 1 through a floating bearing, a first end is defined as one end of the turbine shaft 1 where the impeller 2 is installed, a second end is defined as one end of the turbine shaft 1 where the turbine 4 is installed, a shaft seal fixed sleeve 5 is arranged at the second end of the impeller 2 on the turbine shaft 1, a first seal ring groove is formed in the first end of the shaft seal fixed sleeve 5, a second seal ring groove is formed in the second end of the first seal ring groove on the shaft seal fixed sleeve 5, the second seal ring groove and the first seal ring groove are distributed at intervals, a first seal ring 6 is installed in the first seal ring groove, and a second seal ring 7 is installed in the second seal ring groove, defining the matching surface of the intermediate body 3 and the shaft seal fixed sleeve 5 as a sealing surface, wherein the outer side of the first sealing ring 6 is pressed on the sealing surface, the outer side of the second sealing ring 7 is pressed on the sealing surface, a sealing bulge 8 extending towards the shaft seal fixed sleeve 5 is arranged on the sealing surface adjacent to the second sealing ring 7, the sealing bulge 8 is positioned at the second end of the second sealing ring 7, and the projection of the sealing bulge 8 and the second sealing ring 7 along the axial direction of the shaft seal fixed sleeve 5 is at least partially overlapped.
Specifically, in this embodiment, an oil throwing groove 9 is formed in the shaft seal fixed sleeve 5, the oil throwing groove 9 includes an arc groove located at the first end and a straight groove located at the second end, the straight groove is arranged in an inclined manner, a groove bottom of the straight groove is an inclined plane, and an included angle between the inclined plane and a central axis of the shaft seal fixed sleeve 5 is 30 ° to 60 °.
Above-mentioned leak protection oil structure of core pressure end is through setting up first sealing ring 6 on bearing seal cover 5, second sealing ring 7, and then sealed effect has been improved greatly, and through set up sealed arch 8 on the sealed face at midbody 3, and then it is sealed to form the labyrinth at pressure end department, sealed effect has further been improved, in addition, get rid of oil groove 9 and have a straight flute that the slope set up, and then improve and get rid of the oil effect, thereby can form the lubricating oil accumulation in bearing seal cover 5 and floating bearing's assembly department, the lubrication effect between bearing seal cover and the floating bearing has not only been increased, the oil pressure of bearing seal cover 5 and midbody 3 department has been reduced simultaneously, thereby the oil leak phenomenon has been reduced.
The above embodiments have been merely illustrative of the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and does not depart from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims.
Claims (5)
1. The utility model provides an oil leakage prevention structure of core pressure end, includes the core, the core includes the turbine shaft and installs impeller, midbody, the turbine on the turbine shaft in proper order, defines the one end of turbine shaft installation impeller is first end, defines the one end of turbine shaft installation turbine is the second end, lie in on the turbine shaft the second end of impeller is provided with the bearing seal cover, its characterized in that: first sealed annular has been seted up to the first end of bearing seal fixed sleeve, just lie in on the bearing seal fixed sleeve second end in first sealed annular has seted up the sealed annular of second, install first sealing ring in the sealed annular of first, install the second sealing ring in the sealed annular of second, the definition the midbody with the fitting surface of bearing seal fixed sleeve is sealed face, the outside of first sealing ring supports to press on sealed face, the outside of second sealing ring supports to press on sealed face, it is close to on the sealed face second sealing ring department is provided with to the sealed arch that bearing seal fixed sleeve department extended, sealed protruding being located the second end of second sealing ring, just sealed arch with the second sealing ring is followed the at least partial coincidence of the ascending projection of bearing seal fixed sleeve axial direction.
2. The oil leakage preventing structure of the machine core pressure end of claim 1, characterized in that: an oil throwing groove is formed in the shaft seal fixed sleeve.
3. The oil leakage preventing structure of the machine core pressure end as claimed in claim 2, characterized in that: get rid of the oil groove including the arc-shaped groove that is located first end and the straight flute that is located the second end, the straight flute slope is arranged.
4. The oil leakage preventing structure of the machine core pressure end as claimed in claim 3, characterized in that: the bottom of the straight groove is an inclined plane, and an included angle between the inclined plane and the central axis of the shaft seal fixed sleeve is 30-60 degrees.
5. An oil leakage preventing structure of a machine core pressure end according to any one of claims 1 to 4, characterized in that: the first sealing ring grooves and the second sealing ring grooves are distributed at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278834.XU CN211287884U (en) | 2019-12-17 | 2019-12-17 | Oil leakage prevention structure of machine core pressing end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278834.XU CN211287884U (en) | 2019-12-17 | 2019-12-17 | Oil leakage prevention structure of machine core pressing end |
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| Publication Number | Publication Date |
|---|---|
| CN211287884U true CN211287884U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922278834.XU Active CN211287884U (en) | 2019-12-17 | 2019-12-17 | Oil leakage prevention structure of machine core pressing end |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526129A (en) * | 2021-12-30 | 2022-05-24 | 宁波威孚天力增压技术股份有限公司 | Turbocharger with novel shaft assembly |
-
2019
- 2019-12-17 CN CN201922278834.XU patent/CN211287884U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526129A (en) * | 2021-12-30 | 2022-05-24 | 宁波威孚天力增压技术股份有限公司 | Turbocharger with novel shaft assembly |
| CN114526129B (en) * | 2021-12-30 | 2024-02-06 | 宁波威孚天力增压技术股份有限公司 | Turbocharger with shaft assembly |
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