【正文】 WORD文檔 下載可編輯輔助鍋爐房電鍋爐項目系統(tǒng)安裝使用維護(hù)說明備注:階段設(shè)計出版日期20110828包含項目設(shè)計說明文件審核圖紙或圖標(biāo)0批準(zhǔn)文件狀態(tài)CFC總數(shù)CAD管理版次0遞交文件號HYGMB20V7YZDI024遞交文件號HYGMB20V7YZDI014資料名稱系統(tǒng)說明版次日期設(shè)計審核批準(zhǔn)CAD管理備注0 技術(shù)資料 專業(yè)分享 WORD文檔 下載可編輯系統(tǒng)說明Table of Content目錄1 Functions of the System系統(tǒng)功能 6 Safety classified functions安全分類功能 6 Operational Functions運行功能 62 General Description of the System系統(tǒng)一般說明 7 System系統(tǒng) 7 Feed water System (QHG) 給水系統(tǒng) 7 Evaporation System (QHA) 汽化系統(tǒng) 7 Blow down System (QHE) 排污系統(tǒng) 9 Chemical Dosing System (QCC, QCF) 化學(xué)加藥系統(tǒng) 9 Sampling System (QUB) 取樣系統(tǒng) 10 Compressed / Instrument Air System (QHP) 壓縮空氣/儀表系統(tǒng) 10 Main Components主要部件 11 Deaerator/Feed water tank除氧器/給水箱 11 Feed water pumps給水泵 11 Boilers鍋爐 11 Circulation pumps循環(huán)泵 12 Makeup water pumps補水泵 12 Blow down tank排污罐 123 Operation of the system系統(tǒng)運行 13 Normal system operating conditions系統(tǒng)正常運行工況 13 Abnormal system operating conditions系統(tǒng)異常運行工況 14 Normal plant operating conditions電站正常運行工況 15 Abnormal plant operating conditions電站異常運行工況 15 Effects on the ASGS at failure or malfunctions in associated systems因ASGS故障或輔助系統(tǒng)故障產(chǎn)生的影響 154 System Design系統(tǒng)設(shè)計 16 General Design Basis總體設(shè)計基礎(chǔ) 16 Codes and Standards規(guī)范和標(biāo)準(zhǔn) 16 Safety Classification安全等級 16 Safety related design criteria相關(guān)安全設(shè)計標(biāo)準(zhǔn) 16 Protection against Internal Hazards內(nèi)部危害防護(hù) 16 Protection against external hazards外部危害防護(hù) 17 Ambient conditions環(huán)境條件 17 Component Design Basis部件設(shè)計基礎(chǔ) 17 Installation安裝 18 Materials材料 18 Electrical and Control Equipment電氣和控制設(shè)備 18 Automatic Control and On/Off Functions自動控制和開關(guān)功能 19 Boiler鍋爐: 19 Start amp。 stop sequences啟停順序 19 Pressure, power and level control of boiler鍋爐的壓力 20 Circulation pump循環(huán)泵 21 Volume control of boiler鍋爐水量調(diào)節(jié) 22 Feed water pump給水泵 23 Min. boiler pressure and reduced pressure最小鍋爐壓力和減壓 23 Conductivity control導(dǎo)電性控制 24 Bottom blow down (sludge removal) 鍋爐底部排污（污泥清除） 25 Deaerating the boiler鍋爐排氣 25 Warm up valves steam line蒸汽管道上的暖管閥 26 Cooling the protective cage安全箱的冷卻 26 Heating of boiler during hot standby鍋爐熱備用期間加熱 27 Feed water tank:除氧器: 27 Pressure control of feed water tank除氧器壓力的控制 27 Level control of feed water tank and makeup water pumps除氧器和補水泵的液面控制 28 Overflow control of feed water tank除氧器的溢流控制 29 Standby operation備用操作 29 Deaerating排氣 29 Water treatment (Dosing): 水處理（加藥） 30 Hydrazine, (N2H4) 聯(lián)氨 30 Trisodium Phosphate, (crystallized 98% Na3PO4 +12H2O) 磷酸三鈉，（98%的結(jié)晶Na3PO4 +12H2O） 30 Blow down tank cooling排污罐冷卻 31 Measurements其他 31 Alarm functions報警功能 34 Common for ASGS ASGS的常見狀況 37 Boilers鍋爐 37 Feed water tank除氧器 37 Dosing tanks加藥罐 37 Signal Exchange towards MCR指向MCR的信號交換 39 Associated Systems相關(guān)系統(tǒng) 495 General operational aspects一般操作方面 506 Technical System Specification系統(tǒng)技術(shù)規(guī)范 517 References參考文獻(xiàn) 538 Appendices附錄 54?  of the System系統(tǒng)功能描述? perational Functions使用功能The Auxiliary steam generating system (QH), by means of two medium voltage electrode boilers, supplies steam to the auxiliary steam system during main plant outage, startup and shutdown, when steam from the main steam system, or other sources, is not available.本輔助蒸汽系統(tǒng)（QH系統(tǒng)）采用兩臺中壓電極鍋爐在總電站運行中斷、開啟、停止期間，以及主蒸汽系統(tǒng)或其他來源的蒸汽不可用時，向輔助蒸汽系統(tǒng)提供蒸汽。In order to achieve the required fast startup and steam production, the system will normally be in standby operation, at normal operational pressure and temperature by means of low voltage electrical elements (immersion heaters) fitted in the boilers and feed water tank. 為達(dá)到快速啟動和產(chǎn)生蒸汽要求，本系統(tǒng)通常會處于備用狀態(tài)，維持正常操作壓力和溫度。這些工作將由安裝在鍋爐和除氧器內(nèi)的380V低壓電氣元件（備用加熱器）完成。?2General Description of the System系統(tǒng)一般說明 System系統(tǒng)說明? water System (QHG)鍋爐給水系統(tǒng)（QHG系統(tǒng)）Makeup water, demineralized water (QHC) is fed to the feed water tank (00QHJ10 BB010) by makeup water pumps to the sprayer, which is part of the feed water tank. 除氧器（00QHJ10 BB010）的補水是除鹽水（QHC系統(tǒng)），是由補水泵（00QHC11 AP001/00QHC12AP001）和除氧器噴嘴之間的設(shè)備完成的。Excess steam/gas flows from the deaerator through a pipe that connects with the safety valve’s blowoff pipe. A manually shutoff valve (00QHJ10 AA002) on this pipe will be closed after when there is no filling of the tank. Two orifice plates (00QHJ10 BP003/004) is fitted to optimize the flow of the excess steam. During standby operation the valve is closed, in order to save energy.除氧器內(nèi)的過量蒸汽及其他氣體通過排氣管道排出。在除氧器內(nèi)充水后，此管道上的手動切斷閥(00QHJ10 AA002)關(guān)閉。兩個孔板(00QHJ10 BP003/004)將調(diào)整成最有利于過量蒸汽排出的狀態(tài)。為了節(jié)能，在設(shè)備備用期間此閥門將處于關(guān)閉狀態(tài)。The feed water tank’s water level is maintained by regulating the control valve (00QHC10 AA003) for the demineralized makeup water to the feed water tank. Control signal 0100% regulates the makeup water valve 0100%.除鹽補水在除氧器內(nèi)的水位是通過調(diào)節(jié)控制閥(00QHC10 AA003)來維持的?？刂菩盘?100%調(diào)節(jié)補水閥0100%。The feed water tank’s pressure, and indirect its temperature, is maintained by regulating the control valve (00QHF30 AA004) for the steam from the boilers to the feed water tank.通過調(diào)節(jié)鍋爐供給除氧器蒸汽的調(diào)節(jié)閥，可保持除氧器的壓力及對應(yīng)的溫度。The steam is lead to the bottom of the tank and passed through spreader pipes which create a circulation and thus a good mixing in the tank. 除氧蒸汽通過除氧器內(nèi)擴散器管道從除氧器底部進(jìn)入除氧器，這樣有利于蒸汽與水的充分混合。One pressure relief valve (safety valve 00QHJ10 AA010) is fitted on the tank to prevent an excess pressure in case there is a problem with the pressure control. 除氧器安裝一個安全閥（安全閥00QHJ10 AA010），用于防止壓力控制出現(xiàn)問題時造成的超壓事故。The water is pumped from the feed water tank to the respective boiler by the feed water pumps.從除氧器內(nèi)出來的水再由給水泵輸送到各自應(yīng)流向的鍋爐內(nèi)。There is one pump for each boiler (00QHG11 AP001 and 00QHA12 AP001). Each pump is designed for 100% of the flow.每臺鍋爐都配有一臺給水泵(00QHG11 AP001 和 00QHA12 AP001)，每臺泵都按100%的流量設(shè)計。The selected feed water pump is running continuously during normal operation. If the selected pump fails and shuts down,