Variable displacement triple plunger super-pressure pump

Abstract

The invention provides a variable displacement triple plunger super-pressure pump. The pump comprises a crankshaft, a connecting rod, a sliding block, a variable displacement cylinder, a high pressure cylinder, an external hydraulic source, a hydraulic accumulator, an air bag and the like, wherein the variable displacement cylinder is a single-rod piston cylinder; the cylinder body of the variable displacement cylinder can move relative to a piston and is connected with a high pressure plunger; the high pressure plunger forms closed volume with the plunger hole of the high pressure cylinder body, and forms a variable displacement pump with a one-way valve. When the output pressure of the pump is lower than the set pressure, the stroke of the high pressure plunger connected with the variable displacement cylinder becomes maximal; when the output pressure of the pump is increased, the variable displacement cylinder body is retracted relative to the piston, the stroke of the high pressure plunger in the high pressure cylinder is shortened, and the displacement is reduced correspondingly; otherwise, the stroke of the high pressure plunger in the high pressure cylinder is increased, and the displacement is increased correspondingly, so that output flow is guaranteed to be matched with flow required by operation, and automatic constant power variable displacement is realized.

Description

technical field [0001] The invention relates to the technical field of ultra-high pressure pumps, in particular to a variable three-plunger ultra-high pressure pump, which can be used in ultra-high pressure booster systems, high-pressure water jet systems, high-pressure fluid transmission and high-pressure test systems, and the like. Background technique [0002] Water jet technology is to use a high-pressure or ultra-high-pressure pump to pressurize the ordinary water medium to 300-420MPa, and then spray it out at 2-3 times the speed of sound through a nozzle with a diameter of 0.10-0.25mm, thereby forming a high-speed, high-energy, high-penetration Force water beam, that is, high-speed water jet, can be used for material cutting or industrial cleaning. Due to its unique advantages, it is widely used in the fields of machinery manufacturing, aerospace, automobile, military industry and ceramics. [0003] The high-pressure or ultra-high-pressure pump is the key component, th...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is: in order to solve the problem that the currently widely used three-plunger ultra-high pressure pump cannot be variable, the present invention provides a variable variable three-plunger ultra-high pressure pump, and the application of the variable variable three-plunger ultra-high pressure pump can be reliable, Convenient and efficient realization of constant power automatic variable

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