航天推进技术研究院主办
[1]徐登伟,朱建国,罗大亮,等.减压阀球头磨损故障分析及改进[J].火箭推进,2022,48(04):81-87.
XU Dengwei,ZHU Jianguo,LUO Daliang,et al.Failure analysis and improvement of the ball-end wear for pressure reducing valve[J].Journal of Rocket Propulsion,2022,48(04):81-87.
点击复制
XU Dengwei,ZHU Jianguo,LUO Daliang,et al.Failure analysis and improvement of the ball-end wear for pressure reducing valve[J].Journal of Rocket Propulsion,2022,48(04):81-87.
减压阀球头磨损故障分析及改进
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
48
期数:
2022年04期
页码:
81-87
栏目:
目次
出版日期:
2022-08-21
- Title:
- Failure analysis and improvement of the ball-end wear for pressure reducing valve
- 文章编号:
- 1672-9374(2022)04-0081-07
- 关键词:
- 减压阀 球头磨损 机理分析 故障
- 分类号:
- V434
- 文献标志码:
- A
- 摘要:
- 针对某型减压阀主弹簧座球头磨损的问题,利用仿真和试验相结合的方法,分析了减压阀球头磨损的故障机理,计算了不锈钢2Cr13不同硬度组合下球头的应力与应变,结果表明现有结构存在应力超高的问题。同时对金属材料配对副磨损进行研究,从减小接触应力和避免黏附磨损的改进思路出发,提出了改进措施,通过磨损对比试验验证,确定了减压阀的最终改进方案。经过减压阀多个批次试验考核,球头磨损的问题得到彻底解决,验证了改进措施的有效性。研究结果表明,在接触应力未超出材料屈服强度的前提下,磨损与材料的晶体结构密切相关,常用金属材料钛合金作为摩擦副材料具有一定的优势,为高应力摩擦副材料的选用提供参考。
- Abstract:
- Aiming at the problem of the wear of the ball-end of the main spring seat of the pressure reducing valve, the failure mechanism of the ball-end of the pressure reducing valve was analyzed by the method of combining simulation and experiment.Stress and strain of the steel 2Cr13 ball-end with different hardness combinations were calculated, and results indicate that the existing structure has the problem of super high stress.The wear of paired metal materials was studied, from the improvement ideas of reducing contact stress and avoiding adhesion wear, the improvement measures were proposed.Through the verification of wear comparison test, the final improvement plan of the pressure reducing valve was determined.After large numbers of the pressure reducing valve test, the problem of ball wear has been completely solved, which verifies the effectiveness of the improvement measures.Under the premise that the contact stress does not exceed the yield strength of the material, wear is closely related to the crystal structure of the material.The titanium alloy has certain advantages as the friction pair material.
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备注/Memo
收稿日期:2021-06-18 修回日期:2021-10-31
基金项目:国家自然科学基金(51775412)
作者简介:徐登伟(1985—),男,硕士,高级工程师,研究领域为液体火箭发动机阀门设计。
更新日期/Last Update:
1900-01-01