Patent ID: 9116070
Filing Date: 2015-08-25
Classification: G01M

Abstract:
1. A method for testing head loss of a strainer, which comprises use of a hydraulic test device to measure a pressure difference between both ends of the strainer while working fluid is circulated, comprising: circulating the working fluid after controlling the working fluid to be corresponding to on-the-spot pressure and temperature; injecting chemical and non-chemical debris, which are generated on the spot, into the circulated working fluid; and primarily filtering the injected debris before the debris are arrived at the strainer, and wherein the hydraulic test device comprises: a circulation pipe through which working fluid is circulated; an inflow container which temporarily stores the working fluid supplied through the circulation pipe; a container which receives and stores the working fluid through a straighter from the inflow container; a debris interceptor which is transversely disposed in the container so as to primarily filter debris injected through an injection part; sensors which sense a change in temperature and pressure of the working fluid in the container; a circulation pump which is disposed at one of branch pipes of the circulation pipe so as to circulate the working fluid; a flow meter which is disposed at the circulation pipe so as to measure a flow rate of the working fluid; a circulation heating heater which is disposed at the circulation pipe so as to heat the working fluid; and a data acquisition part which stores data sensed by each sensor, flow rate data measured by the flow meter and temperature data obtained by detecting heating temperature of the circulation heating heater.