The invention provides a pressurizing fatigue test device. The pressurizing fatigue test device comprises a computer, an
air compressor, a dual-channel measuring
system, a dual-path gas charging-discharging
control system and a vacuum
system, wherein the front end of the dual-path gas charging-discharging
control system is connected with the
air compressor; the rear end of the dual-path gas charging-discharging
control system is connected with the vacuum
system; the dual-channel measuring system comprises dual channels formed by a pressure measuring point A, a
pressure sensor A, a computer and a pressure measuring point B, a
pressure sensor B and a computer; the dual-path gas charging-discharging system comprises a control loop A formed by an
air compressor, a gas charging pipeline A, a pneumatic control valve A, a gas charging-discharging
nozzle A, a gas discharging pipeline A and a vacuum system, and a control loop B formed by an air compressor, a gas charging pipeline B, a pneumatic control valve B, a gas charging-discharging
nozzle B, a gas discharging pipeline B and a vacuum system. By adopting the pressurizing fatigue test device, the gas charging-discharging efficiency is increased,
pressure measurement and the gas charging-discharging nozzles are distributed optimally, the pressure measuring accuracy is increased, and the turbulence degree of gas flow in a gas charging process is lowered; a dual-effect
control mode is applied, so that the accuracy and security are improved greatly.