PRESSURE CONTROL SYSTEM FOR SIMULATED TRANSFORMER DEVICE INSULATING OIL

摘要

A pressure control system for simulated transformer device insulating oil, comprising: a circulation pump (1), a circulation magnetic valve (2), an oil inlet magnetic valve (4), an oil return magnetic valve (7), an oil cylinder (6), and an oil outlet magnetic valve (8); the system also comprises a gas inlet magnetic valve (3), a gas outlet magnetic valve (5), a pressure sensor (9), a compressed air source (16), and a pressure controller (17); the upper portion of the oil cylinder (6) is an oil chamber with an oil inlet hole (18), and the lower portion of the oil cylinder (6) is a gas chamber provided with an air outlet (13) and an air inlet (14); a through hole is provided in the axial position of the piston rod of the oil cylinder (6); the pressure sensor (9) is embedded at the bottom of the gas chamber; the compressed air source (16) communicates with the air inlet (14) via a pipe installed with the gas inlet magnetic valve (3); the air outlet (13) communicates with a pipe installed with the gas outlet magnetic valve (5); and the pressure controller (17) communicates, via a Bluetooth or a USB, with a host computer installed with control software. The system measures gas chamber pressure by using the pressure sensor (9) so as to automatically control the opening and closing of each magnetic valve, thus responding quickly and stabilizing the pressure of the oil cylinder.