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4.网络结构
4.1 Ovation系统网络采用两层网络结构,即ROOT级和FANOUT级。两级均由Fast Ethernet组成,每层网络设备采用冗余配置。
4.2 Ovation系统采用的实时过程控制通讯网络具有快速和大容量特点。采用全冗余容错技术的Ovation Control Network严格遵循IEEE标准。Ovation网络与通讯介质无关,既可采用光纤, 也可采用UTP。Ovation网络软件符合ISO/OSI标准,可在任何一个标准物理网络层通讯,具有所有网络特性:冗余、同步、确定和令牌传输。当与以太网、快速以太网、令牌环或其它拓扑结构相连时,它使用TCP/IP协议。因为Ovation系统在控制系统网络术上的突破,用户可在局域和广域范围内(LAN和WAN)构建信息系统,并合成多个网络系统。
四.工艺控制要点
图2、3为炉顶冷却检测系统全图和接收罐水位调节面板图。画面显示水泵、供水阀、排水阀、水位变送器、水箱等。控制面板包括水位实际值(PV)、设定值(SV)、供水阀开度值(MV)和阀门开度(XI)的柱状图和数字指示、水位设定值及增、减按键、供水阀开度及手动增、减按键,及自动(A)、手动(M)切换按键等。
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JOY 01760407-0032 GARDNER DENVER COMPRESSOR VALVE SEAT DISCH D549390
0.625 X 0.125IN X 300FT REINFORCED PVC FLEXIBLE TUBING D568883
FLOWSERVE C1C-375 COUPLING REMOVAL DEVICE D569214
THOMAS&BETTS A100-1/2EGC CLAMP NUT WITH REG. SPRING D565759
RUB S.92 S92B41 1/4 IN NPT BRASS BALL VALVE D566435
KIMBERLY CLARK A20 3688001 KLEENGUARD WHITE BOOT COVER D567019
FOSTER 25FSS STAINLESS 1/4 IN NPT QUICK DISCONNECT SOCKET D570495
ALFRED SUTER ROLLER-SMITH 704028 PRECISION BALANCE 0-100MG D567966
BABCOCK WILCOX BA9234400 SPRING BOLT BRONZE UNS NUT C95800 D568247
GARDNER DENVER 01760407-0031 JOY COMPRESSOR SUCTION VALVE SEAT D548972
SULLAIR 001077 THERMAL VALVE REPAIR KIT D535080
MORGAN 9651659 NATIONAL CARBON MOTOR BRUSH 1-1/4X3/4X2-3/4 IN D553601
GENERAL ELECTRIC GE 0360-0445-210 STYLE 360 PIPE REPAIR CLAMP 4IN D573991
FLUOROWARE IGP-04-000-1 INLINE GAUGE PROTECTOR 3/4IN D578854
MERCER RUBBER 150 3 X 1 IN EXPANSION JOINT D577997
RIKEN KEIKI RP-5 GAS SAMPLING PUMP D580698
CARLING EA2-B0-16-615-1DA-BC 2P 15A 125V-DC CIRCUIT BREAKERS D583489
HONEYWELL MP918B 1113 2 9937 PNEUMATIC DAMPER ACTUATOR D584530
VIEGA 81015 PROPRESS STAINLESS PIPE UNION 1IN D588182
HOWDEN 4008927-I PIN FOR SLIDE SHOE D591999
HACH 27425-45 TEST N TUBE REACTIVE PHOSPHATE 0-5MG/L REAGENT SET D585148
HACH 26053-45 TEST N TUBE NITRAVER X REAGENT SET D585150
HACH 26083-45 TEST N TUBE NITRIVER 3 REAGENT SET D585154
SPEARS 867V-530CSR 6IN X 3IN PVC SADDLE CLAMP D585411
VIEGA 80630 PROPRESS REDUCING TEE 3/4 X 3/4 X 1/2IN D588237
VIEGA 80410 PROPRESS STAINLESS 1IN 90DEG ELBOW D588232
TRELLEBORG PVYK560314712S BOX OF 15 TURCON VARISEAL SEAL D588735
NIBCO PC633 PRESSYSTEM 1IN COPPER UNION FITTING D589306
HOKE 8CF4316 GYROLOK 1/2IN TUBE X 1/4IN NPT TUBE CONNECTOR D589366
PULSAFEEDER 1HG-1GL PULSALUBE HYDRAULIC OIL 1 GAL. D586341
VIEGA 80840 PROPRESS STAINLESS REDUCING TEE 1 X 1 X 1/2IN D590409
VIEGA 80450 PROPRESS STAINLESS 45DEG ELBOW 3/4IN D590609
VIEGA 80640 PROPRESS STAINLESS REDUCING TEE 1 X 1 X 1/2IN D590606
VIEGA 80850 PROPRESS STAINLESS REDUCING TEE 1 X 1 X 3/4IN D590407
VIEGA 80830 PROPRESS STAINLESS REDUCING TEE 3/4IN D590405
WESTWOOD EQUIPMENT EMFP-04 AIR INTAKE FILTER D591077
MOBIL POLYREX EM MOTOR BEARING GREASE CARTRIDGE 14.1OZ D591130