航天推进技术研究院主办
[1]杨宝锋,金路,王晓锋,等.两条流体力传递途径下涡轮泵壳体振动特性[J].火箭推进,2023,49(01):72-79.
YANG Baofeng,JIN Lu,WANG Xiaofeng,et al.Vibration characteristics of the turbopump casing under two different fluid force transmission paths[J].Journal of Rocket Propulsion,2023,49(01):72-79.
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YANG Baofeng,JIN Lu,WANG Xiaofeng,et al.Vibration characteristics of the turbopump casing under two different fluid force transmission paths[J].Journal of Rocket Propulsion,2023,49(01):72-79.
两条流体力传递途径下涡轮泵壳体振动特性
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
49
期数:
2023年01期
页码:
72-79
栏目:
目次
出版日期:
2023-02-25
- Title:
- Vibration characteristics of the turbopump casing under two different fluid force transmission paths
- 文章编号:
- 1672-9374(2023)01-0072-08
- 分类号:
- V434.21
- 文献标志码:
- A
- 摘要:
- 液体火箭发动机涡轮泵内非定常流体力主要通过流体—壳体以及流体—转子—支承—壳体两条传递途径激励壳体发生振动,对发动机的安全可靠性造成威胁。为获得流体激励下涡轮泵壳体振动特性,建立了两条流体力传递途径下涡轮泵壳体振动响应定量预测方法,利用发动机热试车结果对预测方法的精度及可靠性进行了验证。在此基础上获得了不同途径下涡轮泵壳体的振动特性。结果表明:所建立的涡轮泵流体激励壳体振动预测方法能够较好地预测壳体振动响应主导频率及幅值,主频幅值误差小于13.85 壳体的最大振动能量源自于泵内动静干涉非定常流动与壳体结构之间的相互作用 流体—壳体途径是涡轮泵流体激励壳体振动的主要来源,其引起的壳体振动响应幅值相比流体—转子—支承—壳体传递途径大2个量级以上。
- Abstract:
- The unsteady fluid force induced vibration of the pump casing in a liquid rocket engine turbopump mainly transmits via two different transmission paths:the fluid-casing path and the fluid-rotor-bearing-casing path, which may pose a threat to the security and reliability of the engine.To obtain the vibration characteristics of the turbopump casing, the quantitative prediction methods of flow-induced pump casing vibration under both two paths were established.The precision and reliability of these methods were verified by hot-fire test result of the engine and the vibration characteristics of the pump casing under different paths were obtained by these methods.Results show that the vibration prediction methods can accurately predict the vibration of the pump casing and the max error of the main frequency amplitude is below 13.85.The maximum vibration energy of the pump casing originates from interaction between the unsteady rotor-stator-interaction flow in the pump and the pump casing structure.The flow-induced vibration of the turbopump casing is mainly induced by the fluid-casing path, which is two orders higher than the fluid-rotor-bearing-casing path.
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备注/Memo
收稿日期:2021-09-07 修回日期:2021-11-11
基金项目:国家重点基础研究发展计划(613321)
作者简介:杨宝锋(1989—),男,博士,工程师,研究领域为液体火箭发动机涡轮泵技术。
更新日期/Last Update:
1900-01-01