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Runoff type supercharger turbine rotating shaft structure and molding process thereof

A turbocharger turbine and shaft structure technology, which is applied in the direction of machines/engines, blade support components, engine components, etc., can solve the difficult problems of reliable connection of turbocharger turbine shafts, so as to improve the allowable operating speed, reliable Connection, the effect of improving the connection rigidity

Inactive Publication Date: 2017-07-28
CHINA NORTH ENGINE INST TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the turbocharger turbine is made of new materials such as ceramics and titanium-aluminum alloys, it is difficult to use friction welding or electron beam welding to achieve reliable connection of the turbocharger turbine shaft

Method used

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  • Runoff type supercharger turbine rotating shaft structure and molding process thereof
  • Runoff type supercharger turbine rotating shaft structure and molding process thereof
  • Runoff type supercharger turbine rotating shaft structure and molding process thereof

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Embodiment Construction

[0028] A radial supercharger turbine shaft structure, including a turbine 1, a shaft 2 and a self-locking ring 3, such as figure 1 As shown, one end of the turbine 1 connected to the rotating shaft 2 is provided with a turbine internal thread blind hole 4, and the bottom of the turbine internal thread blind hole 4 is provided with a process ring groove, and the thread of the internal thread blind hole 4 of the turbine 1 The direction of rotation is opposite to the direction of rotation when the turbine shaft works; a section of turbine light hole 5 is provided between the end surface of the turbine 1 close to the shaft 2 and the blind hole 4 of the internal thread of the turbine, and the turbine light hole 5 is provided with a hole for assembling The turbine ring groove 6 of the lock ring 3, the diameter of the turbine light hole 5 is larger than the internal thread bottom diameter of the turbine internal thread blind hole 4, and the end surface of the turbine light hole 5 nea...

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Abstract

The invention relates to a runoff type supercharger turbine rotating shaft structure and a molding process thereof. The runoff type supercharger turbine rotating shaft structure comprises a turbine, a rotating shaft and a self-locking ring, the turbine is provided with an internal thread blind hole, a polished hole, a ring slot and a guide chamfer, the rotating shaft is provided with an external thread, a positioning shaft shoulder, a polished shaft and a ring slot, and the self-locking ring is an elastic opening ring and is provided with a guide chamfer. By reasonably determining the structure sizes of the turbine, the rotating shaft and the self-locking ring, the turbine, the rotating shaft and the self-locking ring are machined, and then the turbine, the rotating shaft and the self-locking ring are assembled to further form a complete turbine rotating shaft. By means of the runoff type supercharger turbine rotating shaft structure and the molding process, the problems in turbine rotating shaft connection when new materials such as ceramic and a titanium-aluminum alloy are adopted in the supercharger turbine can be effectively solved, reliable connection of the supercharger turbine rotating shaft can be achieved, and the connecting strength and rigidity of the turbine rotating shaft are sufficiently guaranteed.

Description

technical field [0001] The invention belongs to the structural design field of a turbocharger, and in particular relates to a radial turbocharger turbine shaft structure and a forming process thereof. Background technique [0002] The turbocharger is one of the key components of the turbocharged engine, and the turbine shaft is the core component of the turbocharger, which is mainly connected by the turbine and the shaft. At present, the supercharger turbine is generally made of cast nickel-based superalloy K418 material (the material density is 8.0×10 3 kg / m 3 ), the shaft is made of 42CrMo alloy steel. For the turbocharger turbine made of K418 material and the shaft made of 42CrMo alloy steel, friction welding or electron beam welding technology can be used to realize the reliable connection between the turbine and the shaft to form the shaft of the turbine. However, due to the high density of the K418 alloy material, the moment of inertia of the turbine made of the K41...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/02B23P15/00
CPCF01D5/025B23P15/00
Inventor 王正王增全邢卫东王阿娜
Owner CHINA NORTH ENGINE INST TIANJIN
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