機械外文翻譯--保證電除塵器高效穩(wěn)定運行的措施-文庫吧在線文庫
【正文】 detector constitute the feedback signal of the closedloop control electrostatic precipitator, to the effect of energyefficient operation. Their protection and alarm functions involved in the importation of overcurrent, output opencircuit, output short circuit, undervoltage protection, partial excitation, SCR risk of open and critical temperature, the thermal power plant is almost covered by the operation of electrostatic precipitator for all fault types. (2) efforts to improve the status of the operation of electrostatic precipitator, strictly enforce the 《 electrostatic precipitator operation and maintenance guidelines》， the existence of the operation of the equipment failures and shortings should be in time, establish a prehensive, reasonable maintenance and project cycle. (3) maintenance area. Overhaul at the electrostatic precipitator in overcast, anode spacing adjustments, and record the measurement results before and after adjustment. To overcast, anode device vibration equipment (mainly electrical vibration, reducing the browser machine, shaft, bearings, torsion arm hammer, insulation connecting rod, etc.) to inspect the wear and handling。整流變壓器內(nèi)部的電壓、電流取樣電阻，引進負反饋信號，經(jīng)微機智能處理后移相控制可控硅的導(dǎo)通角，改變負載輸出電壓，達到穩(wěn)定輸出的目的，使電場獲得最有效的電暈功率。遵循一定的程序，采用恰當(dāng)?shù)脑囼灧椒?，建立正確的振打制度，同時加強對灰斗排灰設(shè)備的維護，防止灰斗出灰口堵塞，都能防止二次揚塵的發(fā)生。這樣會使電除塵器處理煙氣含塵濃度超過設(shè)計值，除塵效率將受到嚴重影響。對陰、陽極振打裝置的設(shè)備 (主要有振打電機、減器機、轉(zhuǎn)軸、軸承、撓臂錘、絕緣連桿等 )磨損情況進行檢查并處理；對出灰系統(tǒng)、保溫、加熱系統(tǒng)、灰斗料位計、鎖氣器等裝置進行檢查和調(diào)試。 。 (3)機 務(wù)方面。 煤種的變化 如果鍋爐燃燒煤種發(fā)生了變化，其熱值較設(shè)計煤種低，灰分較設(shè)計煤種高，則會加大對輸煤、制粉、除塵、輸灰設(shè)備的磨損，縮短設(shè)備的檢修周期。 導(dǎo)致二次揚塵的因素有許多，如粉塵的比電阻過高，產(chǎn)生反電暈收塵電場的煙氣流速分布不均或流速過高而產(chǎn)生的紊流和渦流。電除塵器直流高壓由 380V 交流電流經(jīng)可控硅高壓整流設(shè)備供給，除塵器電場阻抗對高壓供電裝置來說是一個變化的負載。To ensure stable operation of electrostatic precipitator efficiency measures ESP is a highly efficient dust collector, has been more and more used by coalfired power plants. Electrostatic precipitator in order to maintain longterm, highperformance and stable operation, it should be affecting the efficiency of electrostatic precipitator factors analysis, and to the strengthening of electrostatic precipitator operation, maintenance and overhaul management. 1 Affect the efficiency of electrostatic precipitator dust factor Highlowvoltage power supply control device design and operation of the p
畢業(yè)設(shè)計相關(guān)推薦
鄂ICP備17016276號-1