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Centrifugal Compressor Case Bleed Air Recirculation Structure with Variable Geometry

A technology of geometric size and gas recirculation, applied in the field of compressors, can solve the problem of not being able to optimize the working range of centrifugal compressors, and achieve the effect of optimizing all working conditions

Inactive Publication Date: 2016-03-09
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional bleed air recirculation device cannot optimize the working range of the centrifugal compressor under all working conditions

Method used

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  • Centrifugal Compressor Case Bleed Air Recirculation Structure with Variable Geometry
  • Centrifugal Compressor Case Bleed Air Recirculation Structure with Variable Geometry
  • Centrifugal Compressor Case Bleed Air Recirculation Structure with Variable Geometry

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Embodiment Construction

[0016] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0017] combine Figure 1-5 , The present invention is a novel variable geometric size centrifugal compressor bleed air recirculation structure, including compressor volute, bleed air recirculation channel, compressor inlet channel and inlet sliding sleeve. Its main feature is that the sliding sleeve 1 at the inlet 2 of the compressor can change the size of the outlet 6 of the bleed air recirculation passage backflow tank to change the air return flow of the bleed air recirculation passage. The suction groove 7 of the bleed air recirculation passage is located between the leading edge 3 of the main blade and the leading edge 11 of the splitter blade, the return groove 5 of the bleed air recirculation passage is located outside the outer edge of the main blade, and the sliding sleeve in the compressor inlet passage 1 Installed in the compressor inlet 2, the change ...

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Abstract

The invention aims at providing a gas-entraining recycling structure for a cartridge receiver of a centrifugal-type gas compressor with a variable geometric dimension. The gas-entraining recycling structure comprises a volute shell and a gas compressor impeller which is arranged in the volute shell, wherein a primary blade and a splitter blade are respectively arranged on the gas compressor impeller along the circumferential direction of the gas compressor impeller; a ring-shaped gas control slot is arranged in the volute shell; a reflux ring is fixed in the gas control slot; the reflux ring respectively forms a reflux slot, a gas absorbing slot and a reflux channel with inner walls of volute shell in left-side, right-side and outer-side directions of the gas control slot; the reflux slot, the reflux channel and the gas-absorbing slot are communicated in sequence; the gas absorbing slot is arranged between the front edge of the primary blade and the front edge of the splitter blade; a gas compressor gas inlet path is formed between the front edge of the primary blade and the end part of the volute shell; a slide sleeve capable of moving along the gas compressor gas inlet path is arranged in the gas compressor gas inlet path. The gas-entraining recycling structure disclosed by the invention can improve the reflux amount of the gas-entraining recycling structure to achieve the purpose of optimizing all working conditions of the gas compressor.

Description

technical field [0001] The invention relates to a compressor, in particular to a compressor of a turbocharger. Background technique [0002] Centrifugal compressors use bleed air recirculation devices that are widely used in high-pressure ratio centrifugal compressors in advanced turbochargers at home and abroad. Its main function is to broaden the working range of centrifugal compressors and expand their surge margins. As the speed and pressure ratio of the centrifugal compressor increase, its effective working range narrows sharply. After adopting the bleed air recirculation device, when the flow rate of the centrifugal compressor is close to the surge boundary, part of the gas is pumped through the suction groove, and then from the The return hole flows in, so that the working range of the centrifugal compressor is widened and the surge margin is increased. [0003] The return flow rate of the bleed air recirculation channel during the working process has a decisive impa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/28F04D29/42F04D27/00
Inventor 崔欣洁杜兴华王银燕杨传雷王贺春刘春罡潘克银
Owner HARBIN ENG UNIV
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