张新江 唐元明 范双双 胡金伟 刘东旭

摘 要：H电厂所在区域为地中海伊斯肯德伦湾海龟保护区，为实现节能环保目的，同时对当地海洋环境进行保护。本文首先对循环水系统冷端进行优化计算，确定了冷却塔出水温度值及对应汽轮机组TRL工况的背压值。进而对冷却塔的参数和结构进行初步分析，同时得到冷却塔的初步选型，并根据上述优化计算的结果，对冷却塔的选型进行了论证。最后通过ANSYS有限元法对冷却塔的稳定性进行模拟计算，以此达到冷却塔安全稳定的要求。计算结果不仅对当地环境实现保护目的，而且为此类冷却塔的设计提供一定的理论指导。

关键词：自然通风排烟循环水系统海水冷却塔冷端优化有限元法

中图分类号：TK-9

Type Selection Analysis of Seawater Cooling Tower with Natural Ventilation and Smoke Exhaust in H Power Plant

ZHANG Xinjiang 1 TANG Yuanming 1 FAN Shuangshuang 2 HU Jinwei3 LIU Dongxu 2

（1. EMBA Power Generation Co.， Ltd.， Istanbul， 34330Turkey;

2. Harbin Wohua Intelligent Power Generation Equipment Co.， Ltd.， Harbin Heilongjiang Province， 150001 China;

3. East China Electric Power Design Institute Co.， Ltd of China Power Engineering Consulting Group， Shanghai， 200063 China）

Abstract： H power plant is located in the sea turtle conservation area of Iskenderun Bay in the Mediterranean Sea. It is designed to achieve the purpose of energy saving and environmental protection while protecting the local marine environment. In this paper， the cold end of the circulating water system is optimized and the outlet temperature of the cooling tower and the corresponding back pressure of the turbine unit under TRL condition are determined. Then the parameters and structure of the cooling tower are preliminarily analyzed， and the preliminary type selection of the cooling tower is obtained. According to the results of the above optimization calculation， the type selection of the cooling tower is demonstrated. Finally， the stability of the cooling tower is simulated by ANSYS finite element method， so as to meet the requirements of safety and stability of the cooling tower. The calculation results not only achieve the purpose of protecting the local environment， but also provide some theoretical guidance for the design of this kind of cooling tower.

Key Words： Natural ventilation and smoke exhaust; Circulating water system; Seawater cooling tower; Optimization of cold-end system; Finite element method

目前，改建或新建的冷却塔排烟技术已经普遍流行起来，国内从2005年开始，陆续兴建了大量的烟塔合一项目[1]。烟塔合一技术取排水量小，具有排水温升低、污染物排放源强优化和烟气抬升等优势[2-3]。计算流体力学方法对有效地模拟出电厂烟气排放中一些污染物的形态[4]。同时，结合试验验证方法，证明了高宽比大塔型的冷却塔的优势很大，最主要的是对周围环境的影响较小[5]。侧风与自然通风冷却塔相互影响，不同自然通风冷却方式的侧风效应及其作用机理，对冷却塔构架也有不同的作用[6]。对于冷却塔的稳定性计算方面，可以进行局部的实验研究，然后选取有效的参数进而对冷却塔的稳定性进行探讨[7，8]。……