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Turbocharger

A technology of turbocharger and turbine rotor, which is used in machine/engine, leakage prevention, engine components, etc., can solve the problems of seal ring wear, wear seal ring, aggravate bearing wear, etc., and achieve temperature reduction and contact area reduction. , to avoid the effect of carbon deposition in lubricating oil

Pending Publication Date: 2019-08-23
CHANGZHOU E&E TURBO POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Carbon deposits at the turbine end will wear the seal ring, and the wear of the seal ring will lead to the failure of the turbine end seal structure
The supercharger leaks oil, and the floating bearing cannot form a high-pressure oil film on the inner and outer layers, which intensifies the wear between the bearing and the rotor and the intermediate housing, resulting in damage to the supercharger and reduced engine performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0025] Such as image 3 As shown, the turbocharger among the present invention includes a turbine rotor 1, a shaft 2, an intermediate housing 3, and a pinch wheel 4, and each part and the relationship between them are described in detail below:

[0026] Such as Figure 3 to Figure 5 As shown, at least a part of the turbine rotor 1 is located outside the intermediate casing 3. The turbine rotor 1 includes a hub 10, a plurality of first blades 11 that receive the pressure of the exhaust gas to rotate the hub, and receive the pressure of the exhaust gas to rotate the hub. A plurality of second blades 12, the first blades 11 and the second blades 12 are alternately arranged along the circumferential direction of the hub, one end of the second blade 12 is located on the same circumference of the hub 10 as one end of the first blade 11, the second blade 12 is smaller than the axial dimension of the first blade 11 along the hub 10, that is, the length of the second blade 12 is small...

no. 2 example

[0040] Such as image 3 and Figure 7 As shown, one end of the fixed shaft 2 of the turbine rotor 1 is provided with a first cavity 15, and a first barrier medium 16 for isolating the direct heat transfer between the turbine rotor 1 and the shaft 2 is sealed in the first cavity 15, so as to reduce exhaust gas The heat is transferred to the sealing assembly through the turbine rotor 1 and the shaft 2 , and the thermal conductivity of the first barrier medium 16 is smaller than that of the shaft 2 and the turbine rotor 1 . The rest of the structure is the same as that of the first embodiment, and will not be repeated here.

no. 3 example

[0042] Such as image 3 As shown, the difference from the first embodiment is that it also includes a heat insulation assembly that isolates the heat of the exhaust gas from being directly transmitted to one end of the intermediate casing, the heat insulation assembly is fixed at one end of the intermediate casing, and the heat insulation assembly is located on the turbine rotor 1 and the middle housing 3; the heat insulation assembly includes a first heat insulation component 5 and a second heat insulation component 6, and a second cavity 7 is formed between the first heat insulation component 5 and the second heat insulation component 6 , at least in the second cavity 7 is sealed a second barrier medium used to block the direct heat transfer between the exhaust gas and a part of the intermediate housing, so as to reduce the heat transfer of the exhaust gas to the sealing assembly through the intermediate housing 3 .

[0043] For the above several embodiments of the turbochar...

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PUM

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Abstract

The invention discloses a turbocharger. At least one part of a turbine rotor is positioned outside a middle shell; one end of the turbine rotor is fixed to one end of a shaft; one end of the shaft issupported at one end of the middle shell; an axial through hole is formed in the middle shell; the shaft penetrates through the through hole of the middle shell; a sealing module is arranged between one end of the shaft and the middle shell; the other end of the shaft is connected with a pressing wheel; a first cavity is formed in the end, fixed to the shaft, of the turbine rotor; after the shaftis fixed to one end of the turbine rotor, the shaft seals a mouth part of the first cavity to form a first sealing cavity; a first barrier medium for separating direct heat transfer between the turbine rotor and one part of the shaft is sealed in the first sealing cavity, so that heat, transmitted to the sealing module through the turbine rotor and the shaft, of waste gas is reduced; and the heatconducting coefficient of the first barrier medium is lower than the heat conducting coefficients of the shaft and the turbine rotor. The turbocharger can prevent leakage of lubricating oil caused byfailure of the sealing module.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a turbocharger. Background technique [0002] The use of turbochargers can increase power, reduce fuel consumption, and reduce the size and weight of engines without changing the structure of the engine. It is an important means for modern engines to improve power and economy. While improving combustion conditions, it can also reduce the emission of solid suspended particles, carbon monoxide, and nitrogen oxides in the exhaust gas. [0003] Oil leakage often occurs during the working process of the turbocharger, which is determined by the unique structure of the turbocharger. The turbochargers currently used in various engines generally adopt floating bearing structures, that is, the bearings and rotors of the supercharger, and there is a small gap between the bearings and the intermediate housing. When the turbine rotor rotates at high speed, high-pressure lubricating oil fill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B39/00F01D11/00F01D25/08
CPCF02B39/00F01D11/00F01D25/08
Inventor 谢小虎唐云冰章景初
Owner CHANGZHOU E&E TURBO POWER