Sea water desalination spraying and liquid distributing sprayer

Abstract

The invention discloses a sea water desalination spraying and liquid distributing sprayer which comprises a sprayer seat and a sprayer cover, wherein the sprayer cover comprises an upper part base, a throat part and a lower part spray nozzle; the upper part base is internally provided with a rotational flow chamber; the bottom center of the upper part base is connected with the lower spray nozzle through the throat part; the diameters of the rotational flow chamber and a lower sprayer are both greater than the diameter of the throat part; the sprayer cover comprises a main body; the bottom center of the main body is provided with an inverted circular truncated cone inner core; the outer periphery of the inverted circular truncated cone inner core is provided with a plurality of spiral flow guide blades which are distributed at intervals; flow guide grooves are formed among the plurality of spiral flow guide blades which are distributed at intervals; the main body is arranged on the upper part base; the inverted circular truncated cone inner core and the spiral flow guide blades extend into the rotational flow chamber. The sprayer provided by the invention ensures that the flow rate distribution is of a curve approximate to a trapezoid which is higher in the middle and lower in periphery, fills up the defects that liquids in the middle of the spray nozzle are hollow in the traditional rotation flow spray nozzle and the liquid distribution quantity is low, and improves the sea water liquid distribution uniformity in spraying by overlapping a plurality of sprayers, thereby improving the using efficiency of a sea water desalination heat transfer pipe effectively.

Description

【Technical field】 [0001] The patent of the present invention relates to a nozzle, in particular to a liquid distribution nozzle in a seawater desalination sprinkler system. 【Background technique】 [0002] Low-temperature multi-effect seawater desalination with hydropower cogeneration is currently the main way to achieve large-scale seawater desalination and utilize seawater desalination. As one of the core equipment of the spraying system, the liquid distribution nozzle mainly provides uniform spraying for the falling film evaporation heat exchange tube bundle. Liquid distribution, the quality of the liquid distribution characteristics of the nozzle is directly related to the use efficiency of the evaporative heat exchange tube bundle, the safety of use and the performance of the entire seawater desalination device. In order to obtain a certain spray area, most seawater desalination nozzles are swirl nozzles. Although this type of nozzle ensures a large spray coverage area,...

AI Technical Summary

Problems solved by technology

Although this type of nozzle ensures a large spray coverage area, due to the tangential rotation force, the middle part of the nozzle has a large air core and less liquid replenishment, which cannot ensure the uniformity of the water and liquid film in the entire heat transfer tube bundle. , which eventually leads to uneven heating of the heat transfer tube wall, resulting in local cracking, scaling and other undesirable phenomena, which reduces the use efficiency of the heat transfer tube bundle and also reduces the service life of the heat transfer tube wall, and the existing swirl nozzle is integrated The structure is not easy to install and maintain, which increases the cost of seawater desalination

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