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[1]王海山,陈晖,万金川,等.液体火箭发动机“热泵”起动研究[J].火箭推进,2014,40(03):33-37.
　WANG Hai-shan,CHEN Hui,WAN Jin-chuan,et al.Investigation on “heat pump”starting fault of liquid rocket engine[J].Journal of Rocket Propulsion,2014,40(03):33-37.

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液体火箭发动机“热泵”起动研究

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 40 期数: 2014年03期页码: 33-37 栏目: 研究与设计出版日期: 2014-06-27

Title:: Investigation on “heat pump”starting fault of liquid rocket engine

作者:: 王海山; 陈晖; 万金川; 王伟光; 西安航天动力研究所，陕西西安 710100

Author(s):: WANG Hai-shan; CHEN Hui; WAN Jin-chuan; WANG Wei-guang; Xi’an Aerospace Propulsion Institute, Xi’an 710100, China

关键词:: 热泵; 起动故障; 排空系统; 排放系统

分类号:: V434+.21-34

文献标志码:: A

摘要:: 多次起动泵压式液体火箭发动机存在“热泵”起动故障，主要原因是发动机再次起动时，泵部件的温度过高引起推进剂气化，导致推进剂增压泵不能够正常建压。因此提出一种“热泵”起动故障的解决方案：在发动机系统上增设排空系统和排放系统，降低泵部件的温度及泵腔的含气率；在涡轮和泵之间增加隔热结构，减少它们之间的热量传递；对发动机再次起动的时序进行调整。该方案结合某型多次起动泵压式上面级发动机试验验证，“热泵”起动故障圆满解决。最后通过对不同试验结果和高空环境仿真结果的对比，验证了该方法的正确性，能够提高发动机再次起动的可靠性。

Abstract:: The“heat pump”starting fault happens on the repeatedly-started pump pressure liquid rocket engine. The main reason is that the propellant is gasified by the high temperature of the pump when the engine starts again, which makes the propellant booster pump work abnormally. A solution is proposed for solving the fault. That is, the emptying system and drain-off system are added in engine system to reduce the temperature of the pump and air containing ratio in pump cavity, an adiabatic structure between the turbine and pump is installed to reduce heat transfer, and the restarting time sequence of the engine is adjusted accordingly. The“heat pump”starting fault of the certain repeatedly-started liquid rocket engine was eliminated satisfactorily in combination with the verification testing in high altitude. The correctness of the method was validated by comparison of the different test data and the high altitude environment numerical simulation results. The method

参考文献/References:

[1]张忠利, 张蒙正, 李福云. 液体火箭发动机涡轮壳体温度偏高原因研究[J]. 火箭推进, 2013, 39(2): 35-39.
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备注/Memo

收稿日期：2013-11-27；修回日期：2014-05-15 基金项目：中国航天科技集团公司支撑项目（2011JY09）作者简介：王海山（1977—），男，工程师，研究领域为液体火箭发动机涡轮泵

更新日期/Last Update: 1900-01-01