【正文】 ely 6 bar(g). 用戶的氣源有壓縮空氣減壓閥(00QHP10 AA102)，用于降低并控制壓力，使其維持在6 bar(g)左右。Shutoff valves are placed both up and downstream of the reducing valve.壓縮空氣減壓閥(00QHP10 AA102)的上下游管道都安有切斷閥。Before each of the actuators, there are shutoff ball valves, which links the stainless steel pipes with plastic pipes connected to the actuators.制動器前有兩個截流球閥，一頭連接著不銹鋼管，另一頭連接著塑料管（塑料管與制動器連接）。For the QHP system there are a mon pressure gauge (00QXP10 CP002) and a mon pressure transmitter (00QHP10 CP001). The pressure transmitter signal is used for indication of air pressure on the HMI (operator’s panel) and a warning.QHP系統(tǒng)有一通用壓力計(00QHP10 CP002)和一通用壓力變送器(00QHP10 CP001)。壓力變送器信號用于顯示HMI（操作員面板）上的氣壓，并起報警作用。 Main Components主要設(shè)備 Deaerator/Feed water tank除氧器The deaerator/feed water tank’s main functions are the venting of unwanted gases (mainly oxygen) from the makeup water (demineralized water), preheating of feed water to minimize stresses on materials connecting to the boilers and to keep a reserve volume of feed water if there is a loss of makeup water. 除氧器主要用于去除系統(tǒng)補(bǔ)水（除鹽水）中的廢氣（主要為氧氣），預(yù)熱給水，以減少和鍋爐相連的部位的給水熱應(yīng)力，當(dāng)除鹽補(bǔ)水減少時，可維持一定的給水儲量。The spraytype deaerator releases the dissolved gases in the ining water by reducing it to a fine spray. The counter current flow of steam from the feed water tank heats the water to near the steam saturation temperature and removes nearly all traces of oxygen. In the feed water tank a steam cushion prevents it from recontamination with oxygen.除氧器通過把水通過噴嘴霧化的方式出去其中的溶解氣體。從除氧器出來的蒸汽把給水加熱，使給水溫接近蒸汽飽和溫度并除去氧氣。在除氧器中還有可防止水再度融氧的結(jié)構(gòu)。 Feed water pumps給水泵There are one feed water pump (00QHG11 AP001 and 00QHG12 AP001), high pressure multistage centrifugal type, for each boiler, horizontally mounted on a base plate, each designed for 100% of the flow.每個鍋爐都配有一個高壓多級離心式給水泵(00QHG11 AP001和 00QHG12 AP001)。這兩個水泵水平安裝在底座上，各按100%流量設(shè)計。One pump is in operation, while the third pump (00QHG13AP001) is standby. 給水泵正常運(yùn)行時，第三個泵(00QHG13AP001)處于備用狀態(tài)。If the selected pump fails and shuts down, the standby pump will start automatically.如果水泵停止或不能正常工作，則備用水泵會自動啟動。The pump shafts are uncooled, mechanically sealed.泵軸為空氣冷卻，機(jī)械密封。The function of the pumps is to pump feed water from the feed water tank to the respective boiler, as described above. 給水泵的作用是分別把給水從給水泵里泵入各自的鍋爐內(nèi)，如上所述。See section for more details.。 Boilers鍋爐The function of the boilers is to supply steam to the auxiliary steam system during main plant outage, startup and shutdown, when steam from the main steam system is not available.See section for more details.鍋爐的作用是在主蒸汽回路斷電、啟停，以及主蒸汽系統(tǒng)提供的蒸汽不可用時，為輔助蒸汽系統(tǒng)提供蒸汽。 Circulation pumps循環(huán)泵There are two circulation pumps (00QHM11/12 AP001 and 00QHM21/22 AP001) for each boiler, horizontally mounted on a base plate, each designed for 100% of the flow.One pump is in operation, while the other is standby. 兩個鍋爐上各有兩個循環(huán)泵(00QHM11/12 AP001 和 00QHM21/22 AP001)，水平安裝在底座上，各按流量的100%設(shè)計。一備一用。If the selected pump fails and shuts down, the other pump will start automatically.如果一臺循環(huán)泵停止或不能正常工作，另一個泵將自動啟動。The water is circulated from the outer vessel (boiler vessel) to the inner vessel.爐水從鍋爐外筒循環(huán)到內(nèi)筒內(nèi)。See section for more details. 。Horizontal, radially split, singlestage, singleentry volute casing pump in back pullout design, with radial impeller.泵是臥式、徑向?qū)ΨQ的、單級的單吸式蝸殼泵，單端面機(jī)械式密封。The seal chamber is cooled by cooling fins and ambient cooling air without special external cooling devices.密封腔由散熱片和周圍冷卻空氣冷卻，無需特殊外部冷卻設(shè)備。Mechanical seal with standardized dimensions, balanced, singleacting.標(biāo)準(zhǔn)密封腔，單端面機(jī)械式密封。 Makeup water pumps補(bǔ)水泵There are two makeup water pumps (00QHC11AP001 and 00QHC12AP001) for this system, each designed for 100% of the flow.本系統(tǒng)配有兩個補(bǔ)水泵(00QHC11AP001 和 00QHC12AP001)。各按流量的100%設(shè)計。One pump is in operation, while the other is standby.水泵一備一用。If the selected pump fails and shuts down, the other pump will start automatically.如果水泵停止或不能正常工作，另一水泵將自動啟動。See section for more details.。 Blow down tank排污罐A blow down tank (00QHE10BB010) is installed for reducing pressure/temperature and cooling of blow down water and water that is drained from boilers, feed water tank, and steam lines.排污罐(00QHE10BB010)是用來降低排污水的壓力/溫度，并冷卻排污水、鍋爐、除氧器和蒸汽管道排出水的。The tank is vertical with blow down inlet pipes tangentially aligned with the shell.排污罐通過與其成垂直狀的排污入口管和殼體相連。It is equipped with an exhaust pipe at the top, an overflow pipe half way up on the shell and connections for cooling, temperature transmitter，local pressure gauge and drain. See section for more details排污罐的裝配：頂部配有排氣管，殼的中部配有一溢流管，還有用于冷卻、溫度傳感器，就地壓力計和排水用接口。 3 Operation of the system 系統(tǒng)運(yùn)行Switch position explanation:轉(zhuǎn)換位置說明：0: System shut down mode系統(tǒng)處于關(guān)閉模式1:System in operation mode系統(tǒng)處于運(yùn)行模式STANDBY: System in standby mode備用：處于熱備用模式Function may be chosen by switch on control cabinet in building此功能可在鍋爐房內(nèi)的控制柜使用開關(guān)選擇。REMOTE: Function may be chosen from the control room .遠(yuǎn)程遙控：此功能可在控制室內(nèi)選擇。 Normal system operating conditions 正常系統(tǒng)運(yùn)行工況The ASGS plant can be in operation，hot standby or stopped. Selections are made on the control panel by setting the plant operation switch to 0 or 1.ASGS系統(tǒng)既可以運(yùn)行、熱備用，也能停運(yùn)。停止和運(yùn)行可通過設(shè)定控制板上的電站運(yùn)行開關(guān)（0或1）來選擇。Each boiler can be in operation，hot standby or stopped. Selections are made individually for each boiler on the control panel, by setting the switches to 0 or 1. In position 1 the boilers can be started or stopped locally or by a remote signal if REMOTE operation is chosen.鍋爐系統(tǒng)既能運(yùn)行、熱備用，也能停運(yùn)。停止和運(yùn)行可通過設(shè)定控制板上的電站運(yùn)行開關(guān)（0或1）來選擇。在位置1時，鍋爐可就地啟?；蛲ㄟ^遠(yuǎn)程信號控制啟停（當(dāng)遠(yuǎn)程操作開啟時）。Normally both boilers are chosen for operation, which mean that they work in parallel. Serial operation is not possible, although a sequential operation can be achieved by setting the pressure set points for the respective boiler with some difference.正常情況下，兩臺鍋爐是獨(dú)立工作，也就是說，它們是協(xié)同工作的，相互之間不發(fā)生干擾，即使是通過設(shè)定兩臺鍋爐各自不同的壓力設(shè)定點以達(dá)到協(xié)同工作的目的也是不允許的。The feed water tan