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CN102865271A 一种液压阀内泄漏的检测方法及其装置 无效 - 撤回

一种液压阀内泄漏的检测方法及其装置
摘要：
本发明涉及一种液压阀内泄漏的检测方法及其装置。本发明属于泄漏检测技术领域。一种液压阀内泄漏的检测方法，采用液压油缸和位移传感器组合方式，液压油缸和被测试液压阀接入测试管路中，通过检测液压油缸活塞的位移，换算计算出一段时间内被测试液压阀的泄漏量，进行液压阀内泄漏的检测。一种液压阀内泄漏的检测装置，包括实验台架、双单向电磁换向阀、电磁换向阀和液压油缸，实验台架上有测试管路连接双单向电磁换向阀和电磁换向阀，液压油缸连通测试管路，液压油缸活塞杆连接位移传感器，测试管路设有被测试液压阀接口。本发明具有结构简单，检测快捷，成本较低，精度较高，工作效率高等优点；适于压力阀、方向阀、多路阀、流量阀等测试。
摘要（英）：

The invention relates to a detection method and device of internal leakage of a hydraulic valve and belongs to the technical field of leakage detection. The detection method of the internal leakage of the hydraulic valve comprises the following steps of: adopting a combined manner of a hydraulic oil cylinder and a displacement sensor, connecting the hydraulic oil cylinder and a tested hydraulic valve with a test pipeline, converting and calculating the leakage volume of the tested hydraulic valve in a certain period of time by detecting the displacement of a piston of the hydraulic oil cylinder, and detecting the internal leakage of the hydraulic valve. The detection device of the internal leakage of the hydraulic valve comprises an experiment bench, a bidirectional-unidirectional magnetic exchange valve, a magnetic exchange valve and the hydraulic oil cylinder, wherein the test pipeline is arranged on the experiment bench and connected with the bidirectional-unidirectional magnetic exchange valve and the magnetic exchange valve, the hydraulic oil cylinder is connected with the test pipeline, a piston rod of the hydraulic oil cylinder is connected with the displacement sensor, and an tested hydraulic valve interface is arranged on the test pipeline. The detection apparatus of the internal leakage of the hydraulic valve has the advantages of simple structure, quick detection, lower cost, higher precision and high working efficiency. The method and the device are suitable for testing of pressure valves, direction valves, multipath valves, flow valves and the like.

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