公开(公告)号：US4832575A

公开(公告)日：1989-05-23

申请号：US142572

申请日：1988-01-11

Applicant: Les A. Miller ,  Shahin Tabanfar ,  Chih-Hua Chung

Inventor： Les A. Miller ,  Shahin Tabanfar ,  Chih-Hua Chung

IPC: F04B49/06 ,  F04B51/00 ,  G01N30/32

CPC classification number: F04B51/00 ,  F04B49/065 ,  F04B2201/0207 ,  F04B2201/0601 ,  F04B2201/1208 ,  F04B2205/05 ,  F04B2207/041 ,  F04B2207/042 ,  G01N2030/326 ,  G01N2030/328

Abstract: There is disclosed herein a pump check valve test system embodied in a pump control system which control pump speed based upon actual pressure and upon actual pump speed and desired flow rate. The check valve test system disables the portion of the control system which controls pump speed based upon desired flow rate during the test. The test is comprised of timing the time it takes the pump to rotate through the portion of each cycle wherein the check valve is supposed to close and comparing this time to a known value.

Abstract translation: 这里公开了一种泵止回阀测试系统，其体现在泵控制系统中，其基于实际压力和实际的泵速度和期望的流量来控制泵速度。 止回阀测试系统在测试期间根据期望的流量禁止控制系统的控制泵速度的部分。 该测试包括定时泵旋转通过每个循环的部分，其中止回阀应该关闭并将该时间与已知值进行比较。