濾芯的操作與維護(hù)
■ 當(dāng)油溫 >10℃時(shí)，風(fēng)力發(fā)電機(jī)組工作。
■ 當(dāng)油溫 40℃，過濾器進(jìn)出口的壓差超過 3bar 時(shí)，壓差發(fā)訊
器發(fā)出報(bào)警信號(hào)，提示更換濾芯。當(dāng)油溫≤ 40℃時(shí)，忽略從壓
差發(fā)訊器傳來的報(bào)警信號(hào)。
■ 當(dāng)油溫＞ 55℃時(shí)，油流經(jīng)冷卻器的進(jìn)行冷卻，當(dāng)油溫降至
45℃時(shí)，油直接流入齒輪箱。
■ 泵出口壓力傳感器或壓力表，用于檢測(cè)系統(tǒng)的壓力，系統(tǒng)
安全閥設(shè)定壓力為 12bar，當(dāng)檢測(cè)壓力超過 12bar 時(shí)，安全
閥打開，系統(tǒng)溢流。
■ 齒輪箱入口處的壓力傳感器的監(jiān)測(cè)范圍為
0.8 ～ 6bar，不在此范圍內(nèi)時(shí)報(bào)警（油溫 70℃時(shí)
壓力≥ 0.8bar，油溫低于 10℃時(shí)壓力≤ 6bar）（此
監(jiān)控范圍為主機(jī)制造商根據(jù)實(shí)際需要設(shè)定，僅供參
考）；或采用壓力繼電器監(jiān)測(cè)壓力，若壓
力＜ 0.8bar 時(shí)，報(bào)警持續(xù)超過 5 秒則停機(jī)。
濾芯更換及清洗
過濾器底部的濾頭上裝有壓差發(fā)訊器，當(dāng)過
濾器內(nèi)的濾芯壓差達(dá)到 3bar 時(shí)，壓差發(fā)訊
器發(fā)出開關(guān)信號(hào)給主機(jī)控制系統(tǒng)，并由主機(jī)
控制系統(tǒng)發(fā)出警報(bào)，以提示更換濾芯（油溫
低于 40℃報(bào)警信號(hào)被忽略）。
過濾的定義:利用有孔介質(zhì)從流體(液體或氣體)中除去污染物
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