循環(huán)水泵出口液控蝶閥調試時(shí)常見(jiàn)故障及處理

第37卷第1期電站輔機Vol. 37 No. 12016年3月Power Station Auxiliary EquipmentMar. 2016文章編號:1672- 0210(2016)01-0045-04循環(huán)水泵出口液控蝶閥調試時(shí)常見(jiàn)故障及處理何冬輝,魏長(cháng)宏,安凱(遼寧東科電力有限公司,遼寧沈陽(yáng)10006)摘要:自動(dòng)保壓重錘式液控蝶閥作 為循環(huán)水系統的主控閥門(mén)和安全閥,既能消除水錘造成的危害,又可控制水泵的反轉,起到保護機組及管網(wǎng)安全的作用。根據某電廠(chǎng)新建機組循環(huán)水系統配備的液控蝶閥的結構特點(diǎn)和工作原理,結合液控蝶閬在調試過(guò)程中發(fā)生的問(wèn)題以及所積累的調試經(jīng)驗,綜述了該類(lèi)型蝶閥的調試要點(diǎn),分析了在調試和運行過(guò)程中容易出現的故障和產(chǎn)生原因，由此提出相應的預防措施和處理對策,提高了液控蝶閥運行的穩定性和可靠性。關(guān)鍵詞:蝶閥;液壓控制;調試;要點(diǎn);故障;處理;對策;運行中圖分類(lèi)號:TH31文獻標識碼:BCommissioning Common Faults and Treatment for Outlet Hydraulic ControlButterfly Valve of Circulating Water PumpHE Dong-hui'，WEI Chang-hong, AN Kai(Liaoning Dongke Electric Power Co. Ltd, ，Shenyang 10006, Liaoning, China)Abstract: As the main control valve and safety valve of circulatingwater pump, automatic pressure keeping weighttype hydraulic control butterfly valve can not only be against water hammer, but also can control the pump reverseand protect unit and pipe network. Based on the structural features and working principles of the hydraulic controlbutterfly valve of circulating water system for a new power plant, and combined with trial operation process ofhydraulic control butterly valve and the cumulative experiences of commissioning, the key commissioning technicalessentials of the butterfly valve are summarized and the reasonsfor the common faults generated of the valve areanalyzed during start-up commissioning and operation process in this paper. Furthermore, the correspondingprevention and treatment measures are put forward for these faults, in order to improve the stability and reliability ofthe hydraulic control buttrfly valve.Key words: butterfly valve; hydraulic control; commissioning; essentials; faults; treatment; measures; operation程序,分階段按角度實(shí)現開(kāi)、關(guān)動(dòng)作。閥門(mén)開(kāi)啟后，0概述液壓系統自動(dòng)保壓,使重錘不下降,蝶板不抖動(dòng)。關(guān)自動(dòng)保壓重錘式液控蝶閥既具有水泵出口電動(dòng)閉時(shí),按預定的時(shí)間和角度,分快、慢兩階段關(guān)閉。閘閥的作用,又有止回閥的功能,即有一閥替代兩閥因此，液控蝶閥對防止水泵倒轉,抑制和消除水壓波的優(yōu)點(diǎn),可減少占地面積和降低投資成本,是電站循動(dòng)及水錘產(chǎn)生具有良好的效果間,可起到保護機組環(huán)水系統截斷或接通介質(zhì)的理想設備"。液控蝶閥及管網(wǎng)安全的作用?，F根據液控蝶閥結構及工作原是根據啟停泵的水力過(guò)渡過(guò)程理論[1 ,按預先設定理,針對性地列舉了蝶閥的常見(jiàn)故障,分析了產(chǎn)生故中國煤化工收稿日期:2015-10-28[HCNMHG作者簡(jiǎn)介:何冬輝(1982-),男,畢業(yè)于大連理工學(xué)院,碩士,工程師,從事火電汽輪機的調試工作。45