Device and method for testing exposure of precooled hydrogen

• Main Authors: LIN YAO, WANG CHENSHENG, LI DONGMEI, LIU YULONG, GU CHENGJIE, HUANG ZEMIN
• Format: Patent
• Language: Chinese; English
• Published: 22.10.2021
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; BASIC ELECTRIC ELEMENTS; ELECTRICITY; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TARIFF METERING APPARATUS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention discloses a device and method for testing exposure of precooled hydrogen, and relates to the technical field of precooled hydrogen exposure testing. The device comprises a measurement and control system, and a supercharger, a hydrogen buffer gas tank, a heat exchanger, a pressure reducing valve, a to-be-tested valve and a hydrogen recovery system which are sequentially communicated through a high-pressure hydrogen pipe. The hydrogen recovery system comprises a recovery gas path A and a recovery gas path B which are connected in parallel. The measurement and control system comprises a PID controller. The PID controller is in electric signal connection with a pressure sensor c, a pressure sensor d and a flow value meter. The PID controller controls the opening degree of the valve element of the pressure reducing valve according to the front air pressure value, the rear air pressure value and the flow value so as to achieve the test pressure and the test flow required by the test of the to-be-teste