Pressure exchanger

Abstract

The invention provides a pressure exchanger, which comprises a rotating component. The rotating component comprises a driving shaft, a rotor, a left thrust disk and a right thrust disk positioned on two sides of the rotor respectively, a spring, and a compaction bar acted by the spring to thrust the right thrust disk to the right; the pressure exchanger is also provided with a non-rotating component which comprises a shaft seal cover, a left end cap provided with a relatively high-pressure fluid inlet and a relatively low-pressure fluid outlet, a left port plate arranged on the left side of the left thrust disk, a right port plate arranged on the right side of the right thrust disk, a right end cap provided with a relatively low-pressure fluid inlet and a relatively high-pressure fluid outlet, and a shell. The pressure exchanger has higher energy recovery efficiency, needs no complex valve control system, basically has no fluid pressure and fluctuation of flow in a used system, hardlyhas leakage on a thrust face and a sealing face, has less leakage and higher volume efficiency than a pressure exchanger in clearance fit, and is convenient to produce efficient miniature, medium andlarge-sized pressure exchangers.

Description

technical field [0001] The invention relates to energy exchange devices in fluid systems. Background technique [0002] The research on fluid pressure energy comprehensive utilization technology and equipment at home and abroad has made great progress, and many different forms of devices have been developed. Some of these devices have become industrialized products, applied to corresponding industrial fields, and achieved good economic benefits, which is of great help to enterprises in saving energy and reducing costs. [0003] Pressure fluid energy comprehensive utilization equipment is mainly divided into two categories: [0004] One is that the high and low pressure fluid transfers energy by means of the impeller and the main shaft, that is, the mechanical energy is used as the intermediate link of the fluid pressure energy transfer. Typical devices include Francis Pump, Pelton Wheel and Turbo Charger. Although the technology of this type of energy recovery device is r...

AI Technical Summary

Problems solved by technology

[0006] This kind of rotary pressure exchanger is disclosed in Chinese patent 98809685.4. The pressure exchanger uses the tangential impulse of high pressure and low pressure water flow as the driving force of the rotor rotation. There must be a clearance fit between the rotor and the two end covers (98809685.4 specification No. 4 / Page 5: the sleeve is slightly longer than the rotor), and for this reason, a certain amount of water leaks from the high-pressure flow path to the low-pressure flow path on the distribution surface between the rotor and the two end covers (the rotor with a diameter of 100mm The leakage water flow rate is about 200L / h on the gap between the two end faces of about 5μm). In the case of a small water flow rate of the pressure exchanger, because the absolute leakage flow rate of high-pressure water remains unchanged, it is different from the high-pressure water flow rate. The ratio, that is, the relative leakage rate will be greatly increased, so that the volumetric efficiency will be greatly reduced, and the tangential impulse of the small flow of water flow cannot make the rotor rotate stably; in another case, when the rotor is large, relying on the tangential force of high pressure and low pressure water flow The impulsive force acts as the driving force for the rotor to rotate. When the gap between the rotor and the two ends of the cover is small, the rotor is difficult to rotate or the speed is too small. When the gap between the rotor and the two ends of the cover is large, its relative leakage rate is large and the speed The gap between the control and the rotor and the two end caps is a pair of contradictions, so the large-scale pressure exchanger has no commercial application; the pressure exchanger uses ceramics as the main material, and the difficulty and yield of firing large-scale ceramics are low , the failure of pressure exchangers in industrial applications is mainly due to the brittleness of ceramics

[0007] In short, it is difficult for the above-mentioned pressure exchanger to form a product with a small rated flow rate and a large rated flow rate with practical commercial application value; the brittleness of its engineering ceramics also leaves a lot of hidden dangers for the safe and stable operation of the equipment

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