液压源低压安全阀密封失效分析及改进措施  

Hydraulic Source Low Pressure Relief Valve Seal Failure Analysis and Improvement Measures

作　　者：孙永生[1] 刘晓静 王德志[1] 宋振坤[1] 张红超[1] 

机构地区：[1]北京精密机电控制设备研究所,北京100076 [2]北京中科航天人才服务有限公司,北京100048

出　　处：《液压气动与密封》2014年第1期78-80,共3页Hydraulics Pneumatics & Seals

摘　　要：预研伺服液压源在进行低压安全阀可靠性试验时发现:压力腔加压到一定程度时,部分安全阀不能及时按照设计预定开启,部分不能达到设定泄流量,并存在漏油现象。为此,对低压安全阀进行故障清查与分析,最终确定了改进阀体结构和优化加工工艺方法的研究方向。Some pre-research type servo hydraulic source in the low pressure relief valve sensitivity test found that pressure cavity pressure to a certain extent,part of the relief valve is not in accordance with the design is scheduled to open in time,part cannot achieve set discharge,and there is oil leakage.Therefore,an analysis of the fault inventory and low pressure relief valve,eventually determine the improved body structure and the research direction of optimizing processing method.

关 键 词：低压安全阀 密封失效 结构改进 优化工艺 

分 类 号：TH137[机械工程—机械制造及自动化]