A hydraulic system for hydraulic drilling of high-pressure steel pipes in a liquid-filled forming hydraulic press
A liquid-filled forming and hydraulic press technology, applied in the field of hydraulic systems, can solve the problems of increasing the installed power of the equipment, the required flow rate, and the cost increase, and achieve the effects of avoiding energy consumption, improving production efficiency, and reducing installed power.
Active Publication Date: 2019-01-08
TIANJIN TIANDUAN PRESS CO LTD +1
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Problems solved by technology
However, when drilling multiple holes at the same time, the required flow rate is large, and only relying on the power source to complete the drilling will increase the installed power of the equipment, resulting in a series of cost increases
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[0015] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0016] See figure 1 , a hydraulic system for hydraulic drilling of internal high-pressure steel pipes of a liquid-filled forming hydraulic press, including a two-position four-way reversing valve 1, a three-position four-way solenoid valve 4, a superimposed check valve 2, a pressure sensor 3, and a bladder type accumulator Energy device 5, accumulator safety valve group 6, double-acting perforated cylinder 8 and an electric control system, the preferred technology of the electric control system is a relatively mature PLC controller; the oil outlet of the two-position four-way reversing valve 1 It communicates with the oil inlet of the one-way valve 2; the oil outlet of the one-way valve 2 is connected with the pressure sensor 3, the oil inlet...
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The invention discloses a hydraulic system for inner high-pressure steel pipe hydraulic perforating of a hydroforming hydraulic machine. The hydraulic system comprises a two-position four-way solenoid directional valve, three-position four-way solenoid directional valves, a bag type energy accumulator, double-acting perforating cylinders and an electric control system. Each double-acting perforating cylinder is provided with a piston connected with a perforating puncher pin. A rodless cavity of each double-acting perforating cylinder is provided with a liquid medium inlet, and a rod cavity of each double-acting perforating cylinder is provided with a liquid medium outlet. Each liquid medium inlet and the corresponding liquid medium outlet are controlled by the corresponding three-position four-way solenoid directional valve to communicate with a working medium source. A stacking type one-way valve and a pressure sensor are arranged on the output side of the two-position four-way solenoid directional valve. The pressure sensor is arranged at the output end of the stacking type one-way valve. An energy accumulator safety valve set is arranged at the output end of the bag type energy accumulator. The electric control system receives signals of the pressure sensor, and the signals are output to control the two-position four-way solenoid directional valve, the three-position four-way solenoid directional valves and the bag type energy accumulator to work.
Description
technical field [0001] The invention relates to a liquid-filled forming hydraulic press, in particular to a hydraulic system for hydraulic drilling of high-pressure steel pipes in the liquid-filled forming hydraulic press. Background technique [0002] At present, the liquid-filled forming hydraulic press is a typical high-end forming equipment, which is suitable for aerospace, automobile and other industrial fields, and meets the production requirements of light weight and forming precision in this field. Among them, the hydraulic system that completes the hydraulic drilling of internal high-pressure steel pipes uses an independent power source in the early stage to directly drive the double-acting drilling cylinder forward to complete the drilling process. However, when drilling multiple holes at the same time, the required flow rate is large, and only relying on the power source to complete the drilling will increase the installed power of the equipment, resulting in a se...
Claims
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IPC IPC(8): B21D28/34B30B1/32B30B15/16B30B15/22F15B1/02F15B11/16F15B13/06F15B21/08
CPCB21D28/34B30B1/32B30B15/163B30B15/22F15B1/024F15B11/16F15B13/06F15B21/08F15B2211/212F15B2211/50
Inventor 杨仕安张扬武志杰
Owner TIANJIN TIANDUAN PRESS CO LTD