A moving casing type multi-action water hydraulic radial piston pump

Abstract

The invention discloses a movable shell type multi-action water hydraulic radial plunger pump which comprises a cylindrical shell, wherein the radial section of the inner wall of the shell is provided with a wavy curve; each of two ends of the shell is connected with an end cover through a rolling bearing; the movable shell type multi-action water hydraulic radial plunger pump is characterized in that a cylinder is arranged in the shell; a disk-shaped pipeline shaft with columnar bulges are arranged at two ends is mounted in the cylinder; grooves are formed in the outer walls of the columnar bulges at the two ends; the two grooves communicate with each other through a channel in the disk; and furthermore, a pressure adjustment device extending out of the adjacent end cover is arranged in a cavity. The movable shell type multi-action water hydraulic radial plunger pump disclosed by the invention replaces an axial or horizontal structure by a radial structure; and by the increase of the reciprocating motion frequency of a single-turn plunger, the moving speed of the plunger is increased, leakage caused by a pressure difference is compensated, and the volume efficiency of the plunger pump at a low rotating speed is improved.

Description

technical field [0001] The invention belongs to the field of power components in a fluid transmission system, and in particular relates to a bidirectional, liquid spring return, and valve distribution movable casing type water hydraulic radial plunger pump in the field. Background technique [0002] The water hydraulic pump is the core component of the reverse osmosis seawater desalination system. At present, the water hydraulic pumps developed at home and abroad are basically horizontal or axial piston pumps. The minimum allowable speed (≥300rpm) is much higher than the maximum speed of the water turbine (≤100rpm). If it is directly driven by the water turbine, the volume of the water hydraulic pump will be reduced. Low efficiency, severe wear, and inability to work in both directions. Therefore, in the traditional reverse osmosis seawater desalination system, a speed-increasing mechanism, such as a gearbox, is usually used to increase the speed of the tidal energy turbine...

AI Technical Summary

Problems solved by technology

Although the plunger pump can directly cooperate with the hub of the water turbine and can work in both directions, but (1) the flow distribution method is axial flow distribution, the suction and pressure flow paths are complicated, the pressure loss is large, and the hydraulic pump is easy to suck air and cause cavitation , causing vibration and noise; (2) Shaft flow distribution requires high processing and installation precision, and it is difficult to ensure the sealing performance, which affects the volumetric efficiency of the water hydraulic pump; (3) The gas spring return mechanism is easy to leak, the return pressure is difficult to guarantee, and the stability is poor. Moreover, because the gas is easy to compress, the pressure of the gas spring is difficult to adjust

Images