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[CN 201610762729.1] Hydraulic system for hydraulic drilling of high-pressure steel pipes in hydraulic press
[CN 201610762729.1] Title of a hydraulic system for hydraulic drilling of high-pressure steel pipes in a liquid-filled forming hydraulic press: Application number of a hydraulic system for hydraulic drilling of high-pressure steel pipes in a liquid-filled forming hydraulic press: CN 201610762729.1 Applicant: Tianjin Tianforging Press Co., Ltd. Application date: 2016-8-29 Patent type: Invention application The present invention discloses a hydraulic system for hydraulic drilling of high-pressure steel pipes in a liquid-filled forming hydraulic press, including: two-position four-way electromagnetic directional valve, three-position four-way electromagnetic directional valve, bladder accumulator, double-acting punching cylinder and electric control system; The double-acting punching cylinder is provided with a piston connected with the punching punch, the rod-less cavity of the double-acting punching cylinder is provided with a liquid medium inlet, and the rod cavity of the double-acting punching cylinder is provided with a liquid medium outlet; the output side of the two-position four-way electromagnetic reversing valve is provided with an superimposed one-way valve and a pressure sensor; the output end of the superimposed one-way valve is provided with a pressure sensor; the output end of the bladder accumulator is provided with an accumulator safety valve Group; the electronic control system receives the pressure sensor signal, and the output signal controls the work of the two-position four-way electromagnetic reversing valve, the three-position four-way electromagnetic reversing valve and the bladder accumulator.
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