Pressure regulating system and pressure regulating method thereof
A pressure regulation and pressure technology, which is applied in the directions of fluid pressure actuators, valve details, valve operation/release devices, etc., can solve problems such as complex structure, high cost, and unmaintainable pressure in the working chamber, and achieve cost reduction and simplification. Structure, the effect of meeting job requirements
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Embodiment 1
[0037] like figure 1 As shown, the pressure regulating system of the embodiment of the present invention includes: a pressure working part 200, the pressure working part 200 has a pressure control chamber 2001, the pressure control chamber 2001 is provided with a pressure sensor 300, and the pressure sensor 300 is electrically connected to the electronic control unit 400; It also includes a pressure regulating valve connected to the pressure control chamber 2001 , the pressure regulating valve is a pilot-operated two-position three-way valve 100 , and the pilot-operated two-position three-way valve 100 is electrically connected with the electronic control unit 400 .
[0038] like figure 1 As shown, the pilot-operated two-position three-way valve 100 includes a valve seat 1 , a main valve 2 disposed on one side of the valve seat 1 , and a pilot valve 3 disposed on the other side of the valve seat 1 .
[0039] The main valve 2 includes: a valve body 21 , a main valve core 22 , ...
Embodiment 2
[0044] In the method for regulating the pressure of the pressure regulating system according to the first embodiment of the present invention, the rated pressure of the high-pressure fluid is set to P0 (for example, 3MPa), and the target pressure of the pressure control chamber 2001 is P1 (for example, 2MPa), and P10 (for example, 0.05MPa), the size of ΔP can be determined through experiments, and the measured pressure of the pressure sensor 300 is P; the pressure regulation method in this embodiment is as follows:
[0045] S10. Initial stage: such as figure 2 As shown, when the electric control unit 400 controls the coil assembly 31 to be powered off for a long time, under the force of the return spring 23, the main spool 22 is at the rightmost end, and the A port is connected to the T port;
[0046] S20. Boosting stage: the electronic control unit 400 controls the coil assembly 31 to energize to close the sealing cone, and the hydraulic oil of the P port flows to the cavity ...
Embodiment 3
[0052] The third embodiment is basically the same as the second embodiment, except that the target pressure of the pressure control chamber in the third embodiment is lower than the target pressure of the pressure control chamber in the second embodiment, and the target pressure of the pressure control chamber in the third embodiment is set. is P2, and P2 Figure 4 On the basis shown, the adjustment method of the third embodiment is as follows:
[0053] The electronic control unit 400 controls the coil assembly 31 to be powered off, the sealing cone surface is opened, the pressure of the cavity Pp is released, the main spool 22 moves to the right, the cavity Aa becomes larger, and the main spool 22 moves to the right to Figure 5 At the position shown, the A port is connected to the T port, the pressure of the A port is reduced, P Figure 4 shown.
[0054] After that, enter the pressure holding stage, so that the pressure of port A is always maintained between P=P2±ΔP. The prin...
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