Method for reducing noise and cavitation in machines and pressure exchangers which pressurize or depressurize fluids by means of displacement principle

A pressure exchanger, principle technology, applied in the direction of fluid pressure converter, fluid pressure actuation device, fluid pressure actuation system components, etc., can solve the problems of unacceptable noise level and limited time.
CN1489672BInactive Publication Date: 2012-11-07ENERGY RECOVERY INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ENERGY RECOVERY INC
Publication Date
2012-11-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for reducing noise and cavitation in machines and pressure exchangers which pressurize or depressurize fluids by means of the displacement principle, wherein at least one of the pressure exchanger's end covers is equipped with connecting channels (14, 17, 18) which substantially increase the inlet and outlet of flow medium in the rotor channels (15, 16) during residence in the depressurization zone (3) or the pressurization zone (4). The method comprises different embodiments such as, for example, a direct channel connection (14) between channel (16) and opposite channel (15).
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Description

technical field

[0001] The invention relates to a method for reducing noise and cavitation in devices operating on the principle of displacement. When the principle of displacement is used to pressurize a limited volume of liquid extremely quickly, noise will be accompanied by it, or when decompression is extremely fast, noise will also be generated, but the noise is greatly enhanced due to cavitation, and cavitation can also damage the structure and shorten the life of the equipment. Background technique

[0002] Many devices are known at present, which include hydraulic pumps, hydraulic valves, hydraulic actuators, hydraulic motors and pressure exchangers described in Norwegian Patent Nos. Noise levels become unacceptable when used at higher rotational frequencies or under pressure. In practice, the last-mentioned type of equipment is particularly subject to these operating conditions, since the time in which both processes are to be carried out simultaneously within the...

Claims

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