【摘要】：根據(jù)核電機(jī)組對(duì)常規(guī)島冷卻塔冷卻能力的要求,某內(nèi)陸核電廠采用常規(guī)冷卻塔所需要的冷卻面積達(dá)22 000 m~2。一機(jī)一塔若采用常規(guī)冷卻塔,面臨冷卻介質(zhì)難以穿越塔下雨區(qū)到達(dá)塔內(nèi)中部區(qū)域的技術(shù)瓶頸;一機(jī)兩塔又面臨造價(jià)和用地等方面的壓力。針對(duì)上述問題,提出采用改變填料支撐方式的懸吊式布置、改變冷卻塔配風(fēng)方式的高位收水冷卻塔和改進(jìn)換熱方式的雙背壓凝汽器以及它們之間的組合等解決方案,并采用年最小費(fèi)用法對(duì)上述方案進(jìn)行技術(shù)經(jīng)濟(jì)比較,得出不同組合方式下的最優(yōu)方案,分別給出單背壓和雙背壓機(jī)組的冷卻塔配置方案。提供了一個(gè)經(jīng)濟(jì)合理的循環(huán)供水系統(tǒng)供業(yè)主方選擇采用,這對(duì)其他核電廠大型冷卻塔的設(shè)計(jì)和優(yōu)化具有較大的參考價(jià)值。
[Abstract]:According to the requirement of cooling capacity of conventional island cooling tower for nuclear power unit, the cooling area required for the adoption of conventional cooling tower in a inland nuclear power plant is 22000 mm2. If a conventional cooling tower is used for one machine and one tower, it is difficult for the cooling medium to pass through the rain area of the tower to reach the central part of the tower, and the two towers face the pressure of cost and land use. In view of the above problems, the solutions are put forward, such as the suspended arrangement of changing the packing support mode, the high water intake cooling tower with changing the air distribution mode of the cooling tower and the double back pressure condenser with improved heat transfer mode, and the combination between them, and so on. By using the annual minimum cost method, the technical and economic comparison of the above schemes is carried out, and the optimal schemes under different combination modes are obtained, and the cooling tower configuration schemes of single back pressure and double back pressure units are given respectively. An economical and reasonable circulating water supply system is provided for the owners to choose and adopt, which is of great reference value for the design and optimization of large cooling towers in other nuclear power plants.
【作者單位】： 深圳中廣核工程設(shè)計(jì)有限公司;
【分類號(hào)】：TU991.42

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