Port plate for plunger pump

Abstract

A port plate for a plunger pump belongs to a port plate for a hydraulic plunger pump, and aims at reducing cavitation corrosion, vibration and noise of the plunger pump during the distribution process, and improving the work stability of a pump. The port plate is circular, wherein a low pressure zone kidney slot and a high pressure zone kidney slot which are symmetrical relative to a cross shaft and are mutually isolated are arranged in a circular ring, the low pressure zone kidney slot and the high pressure zone kidney slot are respectively formed by kidney-shaped through holes which are divided into N segments, the inlets of the low pressure zone kidney slot and the high pressure kidney slot are respectively provided with a low pressure zone vibration-damping groove and a high pressure zone vibration-damping groove, the front end of the high pressure zone vibration-damping groove or the high pressure zone vibration-damping groove is a circular structure, the tail end is a V shape or an arc-shaped gradually-opened structure, the middle portion is an arc transition structure provided with a reducing hole, and the depths of all portions are different. The port plate has excellent cavitation resistance, small vibration, low noise and excellent work stability, and is suitable for plunger pump sport plates which utilize seawater, fresh water, high water base, mineral oil and the like as work medium, and is simultaneously also suitable for oil-pressure plunger pumps which utilize mineral oil as work medium.

Description

technical field [0001] The invention belongs to a flow distribution plate for a hydraulic plunger pump, and is particularly suitable for an end face flow distribution type plunger pump in a water hydraulic system using seawater, fresh water, high water base, etc. as working media. technical background [0002] Compared with hydraulic oil, due to the low viscosity of water, high vaporization pressure, and large elastic modulus, the vibration and noise of hydraulic plunger pumps have become one of the key technical problems in pump development. The noise of the plunger pump is mainly generated by mechanical noise and fluid noise, and the distribution noise is the main noise source in the fluid noise. The distribution plate is a key part of the end face distribution piston pump, and its distribution performance directly affects the vibration and noise performance of the hydraulic piston pump. [0003] The existing distribution plate adopts a symmetrical structure. Although the...

AI Technical Summary

Problems solved by technology

During the pre-relieving process, small vortex clusters will be formed locally and the pressure will be too low, which is not good for vibration and noise reduction.

[0005] Existing distribution plates with damping structures, such as damping holes, triangular grooves, U-shaped grooves and other damping grooves, have a large change in pressure gradient during the flow distribution transition process, often resulting in overpressure relief and overpressure. , under-boost and other phenomena will produce greater shock and vibration, which is not conducive to the vibration and noise reduction of the pump

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