Digital distribution constant flow radial piston pump

Abstract

Provided is a digital flow-distribution constant-flow radial plunger pump. The digital flow-distribution constant-flow radial plunger pump comprises plunger chambers arranged in a pump body, two-position three-way high-speed switching valves connected with an oil tank and a load, an absolute value angle encoder connected with crank shafts of the plunger chambers, a flow-distribution body and a controller, wherein the two-position three-way high-speed switching valves are connected with the plunger chambers through the flow-distribution body, the controller is connected with the absolute value angle encoder and the two-position three-way high-speed switching valves, the controller receives a corner signal measured through the absolute value angle encoder, a PWM signal and a stroke control signal are output to the two-position three-way high-speed switching valves through a duty ratio control algorithm and a stroke ratio control algorithm, and therefore constant flow of the pump is achieved. According to the digital flow-distribution constant-flow radial plunger pump, the valves are controlled through the duty ratio and the stroke ratio, pulsation of the output flow of a hydraulic pump is reduced, pump vibration is relieved, long-time running of the pump is facilitated, random rotating speed working condition can be adapted, and constant-flow output is achieved.

Description

technical field

[0001] The invention relates to a technology in the field of plunger pumps, in particular to a radial plunger pump with digital distribution and constant flow. Background technique

[0002] In hydraulic wind power generation and hydraulic ocean energy power generation technology, the system structure mostly adopts the circuit of "quantitative hydraulic pump-variable hydraulic motor" to collect wind energy or ocean energy, mainly through the displacement adjustment of the variable hydraulic motor to achieve stable speed control and power generation , and the hydraulic pump still adopts a quantitative hydraulic pump designed according to the driving principle of constant high speed, it is difficult to ensure that it can meet the requirements of random and variable working conditions unique to wind power and ocean energy power generation for a long time, and this pump is difficult Running at low speed for a long time will cause frequent system failures. Existin...

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