液压支架用方向阀特性试验技术及装置研究  

Characteristic Test Technology and Equipment of Direction Valve Used by Hydraulic Powered Support

作　　者：赵忠辉[1,2,3,4] 

机构地区：[1]煤炭科学技术研究院有限公司检测分院,北京100013 [2]国家煤矿支护设备质量监督检验中心,北京100013 [3]煤矿采掘机械装备国家工程实验室,北京100013 [4]煤炭资源开采与环境保护国家重点实验室,北京100013

出　　处：《液压与气动》2015年第11期59-62,89,共5页Chinese Hydraulics & Pneumatics

基　　金：矿山支护设备安全准入分析验证实验室建设项目([2014]744-09)

摘　　要：为了满足大流量液压支架用方向阀的试验要求,解决大流量液压支架用方向阀试验的难题,研究了液压支架用方向阀特性试验技术,提出了一种新的试验方法与模型,解决了调速节流和流量变送等关键技术,实现了系统流量的可控可调和试验过程的流量放大,解决液压支架用方向阀公称流量下阻力损失特性试验的技术难题。研制了液压支架用方向阀特性试验装置,系统最大输出流量1000 L/min以上。满足了GB 25974.3-2010关于压力-流量特性试验的要求,填补行业空白。In order to meet the test requirements of direction valve used by hydraulic powered support and solve problem of large flow direction valve test, a new test method and model are put forward. Through solving the key technology such as speed throttling and flow transmitting, the controllable system flow and amplified process flow are implemented. The characteristic test equipment is developed by solving the resistance loss characteristic test technology problems of direction valve under the nominal flow. The maximum of system output flow is above 1000 L/min, which meet the requirements of GB 25974.3-2010 about pressure flow characteristic test and filled the industry blank.

关 键 词：方向阀 液压支架 阻力损失 特性试验 大流量 

分 类 号：TH137[机械工程—机械制造及自动化] TD355.41[矿业工程—矿井建设]