关于采用下沉式冷却塔的地铁车站增设冷冻水定压补水装置的探讨

Discussion on Adding Pressure-Fixed Refrigeration Water Supplementary Device with Submerged Cooling Tower in Metro Station

在市区的地铁站,有越来越多站点采用下沉式冷却塔基坑等方式安装冷却塔、膨胀水箱等站外冷却水系统设备,以达到各方面需求的平衡。虽然下沉式冷却塔基坑建筑具有整体美观等优点,但也可能存在着膨胀水箱补水能力不足等明显缺陷。本文以广州地铁六号线二期植物园站的冷冻水定压补水装置的改造为例,针对下沉式冷却塔基坑与补水问题的分析与改造进行了探讨。本次探讨增加定压补水装置作为冷冻水补水的主要途径,将对地铁车站既有以及后续下沉式冷却塔布置或者补水压力不足的设计缺陷提供可行性改造或设计的样板。

In urban metro stations,more and more stations use subsidence cooling tower pit to install cooling tower,expansion water tank and other cooling water system equipment outside the station,in order to achieve the balance of all aspects of demand.Although the foundation pit building of subsidence cooling tower has the advantages of overall beauty,it may also have obvious defects such as insufficient water supply capacity of expansion tank.Taking the renovation of freezing water constant pressure water supply device in Botanical Garden Station of Guangzhou Metro Line 6 as an example,this paper discusses the analysis and renovation of foundation pit and water supply of sinking cooling tower.This paper discusses the main way of adding constant pressure water supply device as refrigerated water supply,which will provide a feasible model for the design defect of existing and subsequent subsidence cooling tower layout or insufficient water supply pressure in Metro station.