河北冀力(图)-冷却塔风机减速机-冷却塔风机

冷却塔工作基本原理

冷却塔工作基本原理

干燥（低焓值）的空气经过风机的抽动后，自进风网处进入冷却塔内；饱和蒸汽分压力大的高温水分子向压力低的空气流动，湿热(高焓值)的水自播水系统洒入塔内。当水滴和空气接触时，冷却塔风机减速机，一方面由于空气与不的直接传热，另一方面由于水蒸汽表面和空气之间存在压力差，在压力的作用下产生蒸发现象，带到目前为走蒸发潜热，冷却塔风机，将水中的热量带走即蒸发传热，从而达到降温之目的。

参考资料

A mechanical induced draft cooling tower

Cooling towersare heat removal devices used to transfer process waste heat to theatmosphere. Cooling towers may either use theevaporationof water to remove process heat and cool the working fluid to near thewet-bulb air temperatureor rely solely on air to cool the working fluid to near thedry-bulb air temperature. Common applications include cooling the circulating water used inoil refineries，chemical plants，power stationsand building cooling. The towers vary in size from small roof-top units to very largehyperboloid structures(as in Image 1) that can be up to 200 metres tall and 100 metres in diameter，冷却塔风机维修与维护， or rectangular structures (as in Image 2) that can be over 40 metres tall and 80 metres long. Smaller towers are normally factory-built， while larger ones are constructed on site.

Ahyperboloidcooling tower was patented byFrederik van ItersonandGerard Kuypersin 1918.

安装要求

a、风机的基础要求水平、坚固，且基础高度≥200mm。

b、风机与风管采用软管（柔性材料且不燃烧）连接，长度不宜小于200mm、管径与风机进出口尺寸相同。为保证软管在系统运转过程中不出现扭曲变形，应安装的松紧适度。对于装在风机吸入端的帆布软管，可安装稍紧些，防止风机运转时被吸入，冷却塔风机使用寿命，减少帆布软管的截面尺寸。

c、风机的钢支架必须固定在混凝土基础上，风机其钢支架与基础之间必须增加橡胶减振垫。全部风机及电动机组件都安装在整块的钢支架上，钢地架安装在基础**部的减振垫上，减振垫用多孔型橡胶板。

d、风机出口的管径只能变大、不能变小，最后出风口要安装防虫网，偏向上出风时须增加风雨帽。