CN212583763U - Variable geometry mixed flow turbocharger turbine end oil seal structure - Google Patents
Variable geometry mixed flow turbocharger turbine end oil seal structure Download PDFInfo
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- CN212583763U CN212583763U CN202021493301.XU CN202021493301U CN212583763U CN 212583763 U CN212583763 U CN 212583763U CN 202021493301 U CN202021493301 U CN 202021493301U CN 212583763 U CN212583763 U CN 212583763U
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- end oil
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- vortex end
- oil seal
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Abstract
The utility model discloses a variable geometry mixed flow turbocharger whirlpool end oil blanket structure to reduce the bearing housing processing degree of difficulty, improve the bearing housing yield, reduce cost of maintenance, the safe operation of variable geometry booster is guaranteed to reinforcing leakproofness. The utility model provides a variable geometry mixed flow turbo charger vortex end oil blanket structure, includes mixed flow turbine, thermal-insulated wall and bearing housing, the axial region and the bearing housing cooperation of mixed flow turbine, thermal-insulated wall locates between the turbine wheel back of the body, the bearing housing of mixed flow turbine, its characterized in that: still include the vortex end oil blanket, the vortex end oil blanket adopts the mode of liquid nitrogen cold jacket to install at the bearing housing neck, and the vortex end oil blanket forms clearance fit with mixed flow turbine axle part, the first piston ring of inner peripheral surface installation of vortex end oil blanket, the laminating of axle part of first piston ring and mixed flow turbine forms sealedly, and the second piston ring is installed with thermal-insulated wall to the outer peripheral face of vortex end oil blanket, forms sealedly.
Description
Technical Field
The utility model relates to a turbo charger technical field especially relates to a variable geometry mixed flow turbo charger whirlpool end oil blanket structure.
Background
The existing bearing shell design has the disadvantages of high processing difficulty and low bearing shell yield; moreover, the sealing performance is poor, high-temperature waste gas is easy to leak from a gap between the turbine wheel back and the heat insulation wall, and potential safety hazards are caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a variable geometry mixed flow turbocharger whirlpool end oil blanket structure to reduce the bearing housing processing degree of difficulty, improve the bearing housing yield, reduce cost of maintenance, reinforcing leakproofness guarantees variable geometry booster's safe operation.
The purpose of the utility model is realized like this:
the utility model provides a variable geometry mixed flow turbo charger vortex end oil blanket structure, includes mixed flow turbine, thermal-insulated wall and bearing housing, the axial region and the bearing housing cooperation of mixed flow turbine, thermal-insulated wall locates between the turbine wheel back of the body, the bearing housing of mixed flow turbine, its characterized in that: still include the vortex end oil blanket, the vortex end oil blanket is installed on the bearing housing, leaves the clearance between vortex end oil blanket and the mixed flow turbine axial region, and the first piston ring of inner peripheral surface installation of vortex end oil blanket, the laminating of the axial region of first piston ring and mixed flow turbine forms sealedly, and the second piston ring is installed to the outer peripheral face of vortex end oil blanket, and the laminating of second piston ring and thermal-insulated wall forms sealedly.
Preferably, the cross section of the vortex end oil seal is in the shape of a cross section
Type, the bearing shell is provided with a corresponding
The axial extension part and the radial extension part of the vortex end oil seal are respectively attached to the bearing shell to form radial and axial positioning of the vortex end oil seal, the radial extension part and the bearing shell of the vortex end oil seal are correspondingly provided with positioning pin holes, and positioning pins are inserted into the positioning pin holes to form circumferential positioning of the vortex end oil seal.
Preferably, the axial extension of the scroll end oil seal is an interference fit with the bearing housing.
Preferably, the vortex end oil seal is mounted at the neck of the bearing shell in a liquid nitrogen cooling sleeve mode to form interference fit.
Preferably, the inner circumferential surface of the axial extension part of the vortex end oil seal is provided with a first piston ring groove for mounting a first piston ring; and a second piston ring groove is formed in the outer peripheral surface of the radial extension part of the vortex end oil seal and used for mounting a second piston ring.
Since the technical scheme is used, the utility model discloses following beneficial effect has:
the turbine end oil seal of the variable geometry mixed flow turbocharger provided by the invention prevents high-temperature waste gas from leaking from a gap between the turbine wheel back and the heat insulation wall through the matching of the piston ring and the heat insulation wall, thereby solving the problem of air leakage of the variable geometry mixed flow turbocharger in the operation process, improving the yield of the bearing shell and reducing the maintenance cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the attached drawing, 1-mixed flow turbine, 2-first piston ring, 3-vortex end oil seal, 4-positioning pin, 5-second piston ring, 6-heat insulation wall and 7-bearing shell.
Detailed Description
Referring to fig. 1, a variable geometry mixed flow turbocharger turbine end oil seal structure, includes mixed flow turbine, thermal-insulated wall and bearing housing, the axial region and the bearing housing cooperation of mixed flow turbine, thermal-insulated wall locates between the turbine wheel back of the mixed flow turbine, the bearing housing, still includes the vortex end oil blanket, the vortex end oil blanket is installed on the bearing housing, leaves the clearance between vortex end oil blanket and the mixed flow turbine axial region, the first piston ring of inner peripheral surface installation of vortex end oil blanket, the laminating of first piston ring and mixed flow turbine's axial region forms sealedly, and the second piston ring of outer peripheral surface installation of vortex end oil blanket, the laminating of second piston ring and thermal-insulated wall forms sealedly.
The cross section of the vortex end oil seal is shaped as
Type, the bearing shell is provided with a corresponding
The axial extension part and the radial extension part of the vortex end oil seal are respectively attached to the bearing shell to form radial and axial positioning of the vortex end oil seal, the radial extension part and the bearing shell of the vortex end oil seal are correspondingly provided with positioning pin holes, and positioning pins are inserted into the positioning pin holes to form circumferential positioning of the vortex end oil seal. The axial extension part of the vortex end oil seal is in interference fit with the bearing shell, and the vortex end oil seal is sleeved in a cold sleeve. The inner circumferential surface of the axial extension part of the vortex end oil seal is provided with a first piston ring groove for mounting a first piston ring; and a second piston ring groove is formed in the outer peripheral surface of the radial extension part of the vortex end oil seal and used for mounting a second piston ring.
The first piston ring groove formed on the vortex end oil seal 3 limits the axial position of the first piston ring 2. The sealing structure formed by the vortex end oil seal 3, the second piston ring 5 and the heat insulation wall 6 can effectively prevent high-temperature waste gas from leaking from a gap formed between the turbine wheel back and the heat insulation wall. The mixed flow turbine 1 shaft, the first piston ring 2 and the turbine end oil seal 3 form a sealing structure to prevent lubricating oil from leaking.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a variable geometry mixed flow turbo charger vortex end oil blanket structure, includes mixed flow turbine, thermal-insulated wall and bearing housing, the axial region and the bearing housing cooperation of mixed flow turbine, thermal-insulated wall locates between the turbine wheel back of the body, the bearing housing of mixed flow turbine, its characterized in that: still include the vortex end oil blanket, the vortex end oil blanket is installed on the bearing housing, leaves the clearance between vortex end oil blanket and the mixed flow turbine axial region, and the first piston ring of inner peripheral surface installation of vortex end oil blanket, the laminating of the axial region of first piston ring and mixed flow turbine forms sealedly, and the second piston ring is installed to the outer peripheral face of vortex end oil blanket, and the laminating of second piston ring and thermal-insulated wall forms sealedly.
2. The variable geometry mixed flow turbocharger turbine end oil seal structure according to claim 1, wherein: the cross section of the vortex end oil seal is shaped as
Type, the bearing shell is provided with a corresponding
The axial extension part and the radial extension part of the vortex end oil seal are respectively attached to the bearing shell to form radial and axial positioning of the vortex end oil seal, the radial extension part and the bearing shell of the vortex end oil seal are correspondingly provided with positioning pin holes, positioning pins are inserted into the positioning pin holes to form circumferential positioning of the vortex end oil sealAnd (6) positioning.
3. The vortex-end oil seal structure of the variable geometry mixed flow turbocharger according to claim 2, wherein: the axial extension part of the vortex end oil seal is in interference fit with the bearing shell.
4. The vortex-end oil seal structure of the variable geometry mixed flow turbocharger according to claim 3, wherein: the vortex end oil seal is arranged at the neck of the bearing shell in a liquid nitrogen cooling sleeve mode to form interference fit.
5. The vortex-end oil seal structure of the variable geometry mixed flow turbocharger according to claim 2, wherein: the inner circumferential surface of the axial extension part of the vortex end oil seal is provided with a first piston ring groove for mounting a first piston ring; and a second piston ring groove is formed in the outer peripheral surface of the radial extension part of the vortex end oil seal and used for mounting a second piston ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021493301.XU CN212583763U (en) | 2020-07-27 | 2020-07-27 | Variable geometry mixed flow turbocharger turbine end oil seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021493301.XU CN212583763U (en) | 2020-07-27 | 2020-07-27 | Variable geometry mixed flow turbocharger turbine end oil seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212583763U true CN212583763U (en) | 2021-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021493301.XU Active CN212583763U (en) | 2020-07-27 | 2020-07-27 | Variable geometry mixed flow turbocharger turbine end oil seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212583763U (en) |
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2020
- 2020-07-27 CN CN202021493301.XU patent/CN212583763U/en active Active
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