|Table of Contents|

Influence of outlet parameters of inducer on performance of high speed centrifugal pump(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2020年01期
Page:
69-75
Research Field:
研究与设计
Publishing date:

Info

Title:
Influence of outlet parameters of inducer on performance of high speed centrifugal pump
Author(s):
LI Huimin;  LI Xiangyang;  JIANG Jianyuan;  ZHANG Dan
(Xi’an Aerospace Propulsion Institute, Xi’an 710100,China)
Keywords:
liquid rocket engine;  the inducer-centrifugal pump;  variable-pitch inducer;  cavitation performance
PACS:
V434.2文献标识码:A 文章编号:1672-9374(2020)01-0069-07
DOI:
-
Abstract:
A high speed inducer-centrifugal pump of specific liquid propellant rocket engine has the problem of low cavitation performance, and the liquid propellant rocket engine has special strict requirements on the pump cavitation performance, which directly affects the performance and reliability of the engine.In order to obtain higher efficiency, the larger outlet angle of the inducer was selected according to the conventional pump design experience.However, at this point,the energy matching between inducer and centrifugal impeller was not the best, so the better cavitation performance could not be obtained.After the theoretical analysis, an improved scheme to reduce the outlet angle of the inducer was proposed, and the flow field of the inducer-centrifugal pump was simulated numerically.The simulation and test results show that the pump’s cavitaion performance is greatly improved when the outlet parameters of the inducer were adjusted according to the design method, although the pump’s head and efficiency are slightly reduced, so it is feasible to improve the pump’s cavitation performance by using the design method.

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Last Update: 2020-02-25