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離心機多見的幾種疑問
發表時間:2019-07-17     閱讀次數:     字體:【

1.冷卻水量缺乏

2.冷卻塔的才能降低

3.熱負荷太大,冷凍水回水溫度太高,使冷凝器負荷加大

4.有空氣存在

5.冷凝器管子因水垢等污染,傳熱惡化

離心機運轉中油位減少的也許緣由有哪些?

1.因制冷劑溶入油內,發動時制冷劑蒸騰起泡而被壓縮機吸走油;

2.油參加量過多,從齒輪箱體上部的平衡管被壓縮機吸走;

3.文丘里噴管、過濾器被異物阻塞,從制冷劑提純設備別離出的油不能回到油箱;

4.運轉中油壓調得太高。

離心機電動機的通常毛病及緣由是什么?

(1)電動機振蕩:電動機的轉子與定子不同心或氣隙不均勻,電動機安裝不正確、主軸變形、軸承磨損、定子匝間短路、轉子鼠籠條開裂或壓縮機機械振蕩股動等。

(2)發動不良:電源線接線過錯,線路或發動設備毛病,作業電壓或電源頻率不符,負載轉矩過高或鼠籠條開裂等。

(3)電動機過熱:電動機冷卻介質供給量缺乏或中止,電動機的端電壓偏離額定值,繞組絕緣損壞,機組嚴峻過載等。但電動機繞組過熱不一定就是電動機過(超)負荷。(超)負荷


 
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