摘要
为对GB 25974.3—2010《煤矿用液压支架第3部分:液压控制系统及阀》检测标准中安全阀冲击压力安全性试验方法的合理性进行探究,借助AMESim建立蓄能冲击加载系统仿真模型,对矿用安全阀进行冲击压力安全性试验的仿真计算,得到阀前压力变化曲线,仿真结果与现场测试试验结果基本一致。在此基础上,进行系统压力分别为安全阀公称压力的1.45倍、1.55倍及有无稳压装置下FATA160/40、FATA400/40、FATA1000/40安全阀的冲击压力安全性仿真试验。结果表明:降低冲击载荷,增加稳压容积、增大安全阀排量,都能有效减弱瞬时冲击带来的影响,证实GB 25974.3—2010检测标准中安全阀冲击压力安全性试验技术要求的合理性。
In order to explore the rationality of the safety valve hydraulic pulse pressure test method in GB 25974.3—2010 Powered support for coal mine—Part 3:The hydraulic control system and valves,the simulation model of the energy storage impact loading system was established with AMESim.The hydraulic pulse pressure test simulation calculation of the mine safety valve was carried out,and the pressure change curve before the valve was obtained.The simulation results are basically consistent with the field test results.On this basis,the simulated system pressure was 1.45,1.55 times of the nominal pressure,and the hydraulic pulse pressure test simulation tests of the FATA160/40,FATA400/40,and FATA1000/40 safety valves with or without a voltage stabilizer were carried out.The results show that reducing the impact load,increasing the pressure stabilizing volume and increasing the displacement of safety valve can effectively reduce the impact of instantaneous impact,which verifies the rationality of the technical requirements of safety valve hydraulic pulse pressure test in GB 25974.3—2010 testing standard.
作者
赵怀志
唐小龙
崔述凯
ZHAO Huaizhi;TANG Xiaolong;CUI Shukai(Nanjing SCIYON Automation Group Co.,Ltd.,Nanjing Jiangsu 211102,China;State Key Laboratory of Efficient Mining and Clean Utilization of Coal Resource,Beijing 100013,China)
出处
《机床与液压》
北大核心
2023年第12期183-187,共5页
Machine Tool & Hydraulics
基金
综采工作面电液控制系统安全准入分析验证实验室建设项目(〔2018〕1371)
煤科院技术创新基金(2020CX-I-01)。