Liquid distribution nozzle and seawater desalination spray device

Abstract

The invention discloses a liquid distribution sprayer which comprises a sprayer body (1) and a sprayer cover (2) connected to the upper end of the sprayer body (1), wherein the sprayer body (1) comprises a hollow swirl chamber (11), a throat part (12) and a nozzle (13) which are communicated with one another in sequence; a water inlet (14) is formed in the swirl chamber (11); the flowing area of the throat part (12) is smaller than those of the hollow swirl chamber (11) and the nozzle (13); the sprayer cover (2) comprises a cover body (21) and a flow guide part (22) for guiding liquid to flow to the central region of the liquid distribution sprayer; the flow guide part (22) is formed at the center of the cover body (21) and extends towards the nozzle (13). On the basis of the liquid distribution sprayer, the invention also discloses a sea water desalination spraying device comprising the liquid distribution sprayer. The liquid distribution sprayer disclosed by the invention eliminates an air core caused by swirl of the liquid, so that liquid distribution is more uniform.

Description

technical field [0001] The invention relates to a liquid spraying device, in particular to a liquid distribution spray head. On this basis, the present invention also relates to a seawater desalination spraying device comprising the liquid distribution spray head. Background technique [0002] Low-temperature multi-effect seawater desalination is one of the main ways to achieve large-scale seawater desalination. Among them, the liquid distribution nozzle, as one of the core components of the spray device in this seawater desalination technology, mainly provides uniform spray distribution liquid for the falling film evaporation heat exchange tube bundle. In order to obtain a certain spray area and a more uniform spray liquid, most of the existing seawater desalination nozzles are swirl nozzles. [0003] However, there are still many deficiencies in this common swirl nozzle. Due to the tangential rotation force of the swirl nozzle, the middle part of the nozzle has a large ...

AI Technical Summary

Problems solved by technology

[0003] However, there are still many deficiencies in this common swirl nozzle

Due to the tangential rotation force of the swirl nozzle, the middle part of the nozzle has a large air core, and the amount of liquid distributed at the position corresponding to the center of the nozzle is small, so that the uniformity of liquid distribution on the entire heat transfer tube bundle cannot be guaranteed, which eventually leads to heat transfer. Partial cracking, scaling and other adverse phenomena on the pipe wall

[0004] In addition, the spray angle of ordinary nozzles is small, and the number of nozzles required to complete a certain area of ​​spray cloth liquid increases the space cost

The pressure drop loss of the nozzle is large, which increases energy consumption; the existing swirl nozzle has an integrated structure, which is not easy to install and maintain, and increases operating costs

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