Integrated low-pulsation seawater-desalination energy-recovery and pressurization device

Abstract

The invention relates to an integrated low-pulsation seawater desalination energy recovery and pressurization device. A structure type of a rotary pressure exchanger and a swash plate plunger type booster pump is adopted; the low-pressure area of a fresh seawater valve plate has an open design; a pressure exchanger cylinder hole directly sucks water from a cavity of a device shell during operation, so that the suction performance is improved; the inlet of the booster pump is equipped with high-pressure water, so that the self-suction performance is improved; the flow pulsation of a high-pressure seawater outlet is reduced through water suction and drainage of a plurality of plungers, the flow quality of an energy recovery supercharging device is improved, the impact of the outlet flow pulsation of the device outlet on a reverse osmosis membrane is reduced, and the service life of the reverse osmosis membrane is improved. The device provided by the invention overcomes the defects of lowintegration degree, large flow pulsation, large volume weight and the like of a rotary energy recovery device in the prior reverse osmosis seawater desalination system, and has the obvious technicaladvantages of high energy recovery rate, high flow quality, high integration degree, small structure size and the like.

Description

technical field [0001] The invention relates to an integrated low-pulsation seawater desalination energy recovery supercharging device, which can be used as an energy recovery and supercharging component in a reverse osmosis seawater desalination system, and belongs to the technical field of fluid transmission and control. Background technique [0002] The shortage of fresh water resources has become a global problem. Using seawater desalination technology to open up new freshwater resources and increase the total supply of freshwater has gradually become an important way for countries all over the world to solve the "water crisis". Among all seawater desalination technologies, reverse osmosis seawater desalination technology is currently the recommended technology for most planned seawater desalination facilities. In order to reduce the cost of reverse osmosis seawater desalination, the energy contained in high-pressure concentrated brine needs to pass through energy recove...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an integrated low-pulse seawater desalination energy recovery booster device, which overcomes the shortcomings of existing energy recovery devices such as low energy recovery rate, low integration, large flow pulsation, and large volume and weight; the present invention Through a reasonable and novel structural design, the recovery rate, flow quality and integration of the energy recovery booster device are improved, and the practicability is very strong

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