Deep sea pressure vessel valve switch

Abstract

The utility model discloses a kind of deep sea pressure vessel valve switches, including the pressure difference sensor for monitoring the pressure difference between inside and outside deep sea pressure vessel, first oil circuit, second oil circuit connected with the rod cavity and rodless cavity of piston cylinder respectively, two oil circuits are all provided with electromagnetic valve, one-way throttle valve, one-way sequence valve, electromagnetic valve includes oil inlet A and B, oil outlet C, when electromagnetic valve is in right position, oil inlet A is communicated with oil outlet C, when electromagnetic valve is in left position, oil inlet B is communicated with oil outlet C, the oil outlet C of electromagnetic valve is connected with the oil inlet of one-way throttle valve, the oil outlet of one-way throttle valve is connected with the oil inlet of one-way sequence valve, the oil outlet of one-way sequence valve is connected piston cylinder. The valve switch can continuously, dynamically adjust valve opening according to real-time pressure difference, ensure that valve can maintain stable and reliable sealing performance under pressure fluctuation condition, and double-oil-path redundancy architecture is designed, avoid the risk that entire valve switch is paralyzed due to local fault.