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1. (WO2017152565) CENTRIFUGAL COMPRESSOR STABILITY ENHANCEMENT DEVICE

Pub. No.:    WO/2017/152565    International Application No.:    PCT/CN2016/090321
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Tue Jul 19 01:59:59 CEST 2016
IPC: F04D 29/68
Applicants: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE
合肥通用机械研究院
Inventors: YANG, Qichao
杨启超
ZHAO, Yuanyang
赵远扬
LI, Liansheng
李连生
XIAO, Jun
肖军
Title: CENTRIFUGAL COMPRESSOR STABILITY ENHANCEMENT DEVICE
Abstract:
Disclosed is a centrifugal compressor stability enhancement device. The device is an external device, two sides of the device are provided with a first flange (10) and a second flange (20) which are respectively used to be seamlessly connected to a front cover plate (1) of a centrifugal compressor and a suction pipeline, the first flange and the second flange are arranged in parallel, and a main flow pipeline (30) which is perpendicular to the flanges is arranged between the two flanges; and the main flow pipeline communicates with an air intake pipeline (40) through which external air is supplied. The main flow pipeline is provided with a plurality of jet holes (301) along the circumferential direction of the inner wall surface thereof, an air gathering cavity (303) is arranged on the outer wall surfaces of the jet holes, and the air gathering cavity is provided with an interface which communicates with the air intake pipeline; external compressed airflow enters the air gathering cavity from the air intake pipeline, and enters the main flow pipeline of the compressor via the jet holes arranged circumferentially, such that the air is radially introduced, and is jetted out in the tangential direction of the inner surface of the flow passage. The centrifugal compressor stability enhancement device is simple in structure, is convenient to mount and dismount, and can effectively broaden the operating margin of the centrifugal compressor.