【正文】 ，影響使用壽命。 （ 5）汽缸上下溫差大 若冷水、汽進(jìn)入汽缸，便會(huì)流入下部，引起汽缸上下溫差增大。 4 進(jìn)汽管疏水不足 在啟動(dòng)暖機(jī)時(shí)，會(huì)因蒸汽流量不足，使管壁溫升很慢，汽溫亦不能很快升高，尤其是冬季。 （ 2）加熱器疏水滿水 正常運(yùn)行時(shí)，各加熱器疏水逐級(jí)自流，最后經(jīng)疏水泵打回凝結(jié)水系統(tǒng)，加熱器內(nèi)疏水可自動(dòng)調(diào)節(jié)。 （ 2）減溫器損壞或調(diào)整失當(dāng) 當(dāng)噴水量調(diào)節(jié)不當(dāng)或失靈，則噴水量過多，霧化不好，會(huì)使汽溫突降，尤其在停爐過程中，要求汽溫按一定條件下降，減溫水多用給水，壓差大，控制困難，有時(shí)汽溫下降過快，幅度過大。 《中華人民共和國(guó)電力法》明確規(guī)定電力生產(chǎn)和電網(wǎng)運(yùn)行遵循安全、優(yōu)質(zhì)、經(jīng)濟(jì)的原則，電力企業(yè)應(yīng)當(dāng)加強(qiáng)安全生產(chǎn)管理，堅(jiān)持 安全第一，預(yù)防為主 的方針，建立健全安全生產(chǎn)責(zé)任制度。 關(guān)鍵詞： 典型事故， 預(yù)防，處理 Abstract inglargerandlarger,moreandmoreimportanttotheworker. Fromtherealitiesoftheelectricityprocductivityinourcountry,withthelocalexamplesinthermalpowerplant,thearticleprehensivlyanalysisesthecausationandthedangerousoftypicalaccidents,andthendrowsoutprojectstodealwithit. Duringposingthearicle,agreatdealofdatumsaboutthesecuritywasrefrredto,soastobewidely,representive,accordancewiththereality,andtopreventtheoutburstofaccidentinthefuture. KEYWORDS:typicalaccidentpreventanalyse 目 錄 摘 要 ............................................................................................................................I ABSTRACT ..........................................................................................................................II 1緒論 ............................................................................................................................... 1 2汽輪機(jī)進(jìn)冷汽、進(jìn)水 ........................................................................................................ 2 汽輪機(jī)進(jìn)冷汽、進(jìn)水來源 ...................................................................................................................... 2 ............................................................................................................................................... 2 .......................................................................................................................................... 2 ...................................................................................................................... 3 .................................................................................................................................. 4 ...................................................................................................................................... 4 ...................................................................................................................................... 4 汽輪機(jī)進(jìn)冷汽進(jìn)水系統(tǒng)危害及處理 ...................................................................................................... 4 .................................................................................................................................. 4 .................................................................................................................................. 5 、冷水預(yù)防 ................................................................................................................. 6 .......................................................................................................................................... 6 3油系統(tǒng)及軸承事故 ........................................................................................................... 7 機(jī)械雜質(zhì)的來源及危害 ........................................................................................................................... 7 .......................................................................................................................... 7 ....................................................................................................................................................... 7 、處理 ...................................................................................................................... 7 油系統(tǒng)進(jìn)水 ............................................................................................................................................... 8 原因 ...................................................................................................................................... 8 產(chǎn)生的危害 ............................................................................................................................................ 8 油中進(jìn)水的監(jiān)視 .................................................................................................................................... 9 油中進(jìn)水的途徑及預(yù)防 ....................................................................................................................... 9 軸承斷油事故 .........................................................................................................................................10 軸承斷油事故原因 ..............................................................................................................................10 預(yù)防、處理 ..........................................................................................................................................11 4汽輪機(jī)大軸彎曲 ............................................................................................................ 12 大軸彎曲機(jī)理 .........................................................................................................................................12 大軸彎曲原因 .........................................................................................................................................12 局部碰摩引起的大軸彎曲 .................................................................................................................12 汽缸 進(jìn)水引起大軸彎曲 .....................................................................................................................12 大軸彎曲的預(yù)防 .....................................................................................................................................13 大軸彎 曲處理 .........................................................................................................................................13 5汽輪機(jī)葉片