機(jī)械外文翻譯--保證電除塵器高效穩(wěn)定運(yùn)行的措施-預(yù)覽頁
【正文】 sulation connecting rod, etc.) to inspect the wear and handling。 lower impedance when the electric field and current bee larger, the requirements of equipment to automatically stepdown in order to maintain the current settings. Internal transformer rectifier voltage and current sampling resistor, the introduction of negative feedback signals, processed by the microputer intelligent control thyristor phaseshift of the conduction angle, the output voltage to change the load to the purpose of output, so that the most effective electric field of corona power. However, some power and control equipment, factory production control of the controller of the device characteristics and control methods are not perfect protection, etc., coupled with the power plant operation and maintenance personnel of equipment There is a certain understanding of the principles of the blind spot, resulting in power supply poor operation of control devices. vibration cleaning device operating mode unreasonable At present, thermal power plants in addition to the use of electricity, and all is vibration cleaning methods. In the vibration intensity and uniformity requirements are met, the vibration system (cycle time, the way) is reasonable for the efficiency of electrostatic precipitator dust impact. Vibration cycle, the impact on the collection efficiency is to be able to make when cleaning off the dust from falling into the ash bucket directly block. Vibration cycle is too long, fouling plate thickness, will reduce the dust in the very board charged the conductive properties, reducing collection efficiency。 of Turbidimeter, lighting equipment for testing. If the conditional words, it should also be on the ESP collection efficiency before and after overhaul parison test, to test the effectiveness of repair work. 保證電除塵器高效穩(wěn)定運(yùn)行的措施 電除塵器是一種高效的除塵器，已被越來越多的火力發(fā)電廠所采用。當(dāng)電場阻抗升高、電流變小時，要求設(shè)備能自動升壓；而當(dāng)電場 阻抗降低、電流變大時，要求設(shè)備能自動降壓以保持設(shè)定的電流。在振打力度和均勻性都滿足要求的情況 下，振打制度 (周期、時間、方式 )是否合理對電除塵器除塵效率影響極大。因此，要求電場的煙氣流速不超過 3m/s，一般電場中運(yùn)行的煙氣流速都在 ，且盡可能使煙氣流分布均勻，而振打清灰過頻，是造成除塵器二次揚(yáng)塵最主要的因素。當(dāng)鍋爐長時間 低負(fù)荷運(yùn)行時，為穩(wěn)定燃燒，必須投入重油或柴油助燃，造成煙氣溫度和煙氣中的粘稠物增加。使用低熱值燃煤，會使鍋爐實(shí) 際燃煤量增加，使煙氣的含灰量增大。采用這種供電裝置對原有的設(shè)備進(jìn)行改造，可實(shí)現(xiàn)中央機(jī)遠(yuǎn)程并借助粉塵濁度檢測儀的反饋信號構(gòu)成電除塵器的閉環(huán)控制，達(dá)到高效節(jié)能運(yùn)行的效果。大修時對電除塵器內(nèi)陰、陽極間距進(jìn)行調(diào)整，并記錄調(diào)整前后的測量結(jié)果。 (5)電除塵器大修后的整
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