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閉式冷卻塔工程選型、應用注意事項

作者: admin發表時間:2018-06-02 15:12瀏覽量:

閉式冷卻塔采用了全封閉式設計,有橫流式冷卻塔和逆流式冷卻塔等方式區別,閉式冷卻塔工程選型、應用注意事項說明。

作者:閉式冷卻塔 網址:http://www.bsfqen.live/know/list-51.htm 發布時間:2013/7/30

閉式冷卻塔在工程選型、應用中需考慮的事項

Closed cooling tower in the project selection, application of consideration

一、使用環境

1、應避開酸性排氣、爆炸性粉塵、嚴重煤煙、超量水蒸氣場所;

2、安放在建筑物旁邊,應與進風口保持足夠的距離(0.5-3m,根據型號而定);

3、安放在井式圍墻里,應警惕濕熱空氣回流造成排熱故障,特殊環境可考慮引風裝置。

Ⅰ、Application Environment

1、Should avoid acid exhaust, explosive dust, soot and excess water vapor serious places

2、Air intake should be keep enough distance (0.5 3 m, according to product model) in next to building;

3. Installed In the well type walls, Should be vigilant the hot humid air reflow waste heat caused by fault , please consider induced air device in the special environment.

二、配管問題

1、配管、泵閥應安裝在冷卻塔運行水位以下,防止溢流和空氣吸入;

2、考慮設備安放位置時,應有足夠的水泵揚程,應該考慮沿程的壓力損失和冷卻盤管的壓力損失;

3、流體冷卻的接口法蘭壓力設計為1Mpa,所有管道應考慮吊架或支撐。

Ⅱ,Tubing use

1. Tube,pump valve should be installed in the cooling tower operation under water level, prevent overflow and air inhaled

2. Equipment placement, should have enough water pump head,should consider the path of pressure loss and cooling coil pipe pressure loss.

3. Cooling fluid of the interface flange design pressure for 1 Mpa, all pipeline should consider hanger frame or support.


三、噴淋系統的維護

1、隨著閉式冷卻塔的運行,水中的礦物質和其它雜質都會沉淀下來積聚在水槽里,因此必須定期檢查水質,定期排污清洗,這樣能較好的控制水質和防止結垢。

2、噴淋水水質要求:參照{GB50050-95頁循環冷卻水處理設計規范},水質特別差的地區,應考慮水的凈化(軟化)處理。

3、噴淋水的補充量:蒸發量≤流量0.8%+漂水率≤0.1%+排污量≤0.3%=循環流量的≤1.2%。

Ⅲ.  Spray system maintenance

1. When closed cooling tower working, the water of minerals and other impurities can precipitate accumulate in the sink, so must be regularly check water quality, regularly clean sewage,This can better control water quality and scaling prevention.

2. Spray water quality requirements: Refer to {GB50050-95 page-Cooling water circulation processing design standard} , poor water quality special areas, should consider water purification (softened) processing.

3. Spray water stock-recruitment: Evaporation capacity≤Rate of flow 0.8%+Drift water rate≤0.1%+Discharge capacity≤0.3%=Quantity of fluid flow ≤1.2%。

四、循環水

閉式冷卻塔內的循環水,應符合生產工藝對水質的要求,可采用軟化水或純凈水等。

Ⅳ. Circulating water

The circulating water in the closed cooling tower, should comply with the production process on the quality of the water requirements, can use soft water or pure water, etc.

五、閉式冷卻塔冷卻盤管的防凍(非常重要)

1、當環境溫度≤0℃時,可在噴淋水槽里與內循環管路內設置加熱器,一般采用侵沒式電加熱器,同時閉式冷卻塔內的循環水保持最小流量。

2、設備閑置不用時,應把管內循環水排除,以免低溫天氣損傷凍裂盤管。

3、最有效的方法是在閉式冷卻塔冷卻器內加注防凍液,乙二醇或丙二醇液即可,加注比例可參考下表:

防凍液適配比例表(見word文檔)

Ⅴ. Closed cooling tower cooling coil anti-freeze (Very important )

1.  When the ambient temperature ≤0℃, can use heater in the spray sink and circulation within the tube, General use submerged type electric heater, at the same time the closed cooling tower circulating water to keep the minimum flow.

2.  When equipment at break , should be let off circulating water, to prevent cold weather damage the pipe coil.

3. The most effective way is charging antifreeze solution (Ethylene glycol or Propylene glycol)  in the closed cooling tower , Charging ratio can reference the table below:

Antifreeze solution list (refer to WORD document)

 

 乙二醇  0 10  20  30  40  50  60  70  80  90 
 凝固點  -0.0  -3.5  -8  -15  -24  -36  -48  -47  -29  -13

 

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