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集散控制系统(Distributed Control System-DCS)集计算机技术、控制技术、通信技术、CRT技术于一体,广泛应用于生产过程控制系统。随着计算机和网络技术的飞速发展,产生了一种新型的控制系统———现场总线控制系统(Fieldbus Control System-FCS)。但国内生产企业的情况是:大多数企业还处于模拟仪表和人工控制的阶段,采用DCS控制系统的企业仍是少数。由于DCS应用广泛、技术成熟,在现有的技术条件和市场条件下,FCS还不能完全取代DCS,而且目前现场总线设备和系统还十分昂贵。因此,除了新建企业外,国内企业在较长时间不可能全面采用现场总线技术,而必须走逐步发展、过渡的道路。 ??我们在上海石化股份公司环保部水质净化厂监控系统的改造项目中,对3个生产单元已有的DCS和PLC进行改造,增加通信功能,实现总调度室对各生产装置的集中监控。 2?系统改造方案?? 根据水质净化厂各生产单元的功能和建设阶段,分为厂外调节池、污水一段、氧化沟、四期污水处理、污泥脱水、污泥干化6个生产单元。另外,在厂部设有总调度室,但是总调度室的监控水平较为落后,改造之前基本上不能对各个生产单元进行监控。为了适应生产需要,提高生产效率,改善操作条件,加强监控手段,确保各生产装置的正常运行,急需对各生产单元和总调度室进行技术和设备的更新改造,从而能在总调度室对各装置进行监视管理,及时了解各装置的运行情况,达到指挥及时和调度准确的目的。 2.1?现场监控系统的改造 ??现场监控系统的改造要充分利用原有仪表和设备,主要考虑可靠性和实时性。首先对自控程度较高的3个单元进行改造(系统结构见图2—1): ??四期污水处理生产单元控制设备配置了两套ALLEN-BRADELY公司PLC设备。25块开关量输入信号卡,可采集384点信号;7块开关量输出信号卡,可输出112点信号;3块模拟量输入信号卡,可采集24点信号。两套AB—PLC通过DH+(数据高速通道)实现数据共享。在原有的现场控制计算机上分别增加以太网卡,通过以太网将实时数据送到总调度室处理。??输出192点信号;1块模拟量输入信号卡,可采集8点信号。系统运行采用遥控开关操作与全模拟流程盘显示。在原有的Siemens S5-115UPLC上增加RS-232通讯模块(CP524)和1台现场操作站,用点对点方法连接,使PLC的数据通过现场操作站送到以太网上,与总调度室监控计算机通信。但RS-232传输速率只有9600bps,操作站仅对现场起到监视作用。
7195 TOKYO ELECTRON UPPER ELECTRODE, 10, (DRM2) 1D10-201082-1212954 FUJIKIN PNEUMATIC CYLINDER TYPE BELLOWS VALVE, ?" MVCR FPR-71-6.35
11109 APPLIED MATERIALS PLATE PERF 200MM GIANT GAP NITRIDE 0020-30797
841 ADE TECHNOLOGIES CAPACITANCE METER SYSTEM 600
4189 ALLEN-BRADLEY 10 SLOTS PLC CHASSIS W/ POWER SUPPLY 1756-PA72/B 1756-A10/B
18989 OEM SOLID SHAFT ROTARY MOTION FEEDTHROUGH, 67799A 142353K
7706 APPLIED MATERIALS COVER RF SHIELD GOLD INTERLOCK DELTA SAC 0020-75984
12702 HP PCB, JET DIRECT PRINT/ETHERNET CARD 10BASE-T 5182-4752
21416 TELEDYNE SOLID STATE RELAY SQ24D25
8260 AXCELIS ASSY CHUCK 200 PCV 539203
9845 REXROTH INDRAMAT POWER LINE FILTER NFD03.1-480-016
9392 SIEMENS SINAMICS CONTROL UNIT CU240S DP F (A5E00921203) 6SL3244-0BA21-1PA0
4421 JASCO SUPERCRITICAL FLUID CHROMATOGRAPHY 44MM I.DX250MML
7745 APPLIED MATERIALS POWER SUPPLY 0.750KV, X3286 ESC1.5PN7.5X3288(0190-14140)
10874 APPLIED MATERIALS LINER, CATHODE, MAGNET, SUPER-E 0040-02609
13967 APPLIED MATERIALS INSULATOR,300MM HDPCVD ULTIMA 0200-00374
9279 APPLIED MATERIALS PLUG THROTTLE VALVE UNIVERSAL CHAMBER 0021-10634
10087 SANYO DENKI SANMOTION AC SERVO SYSTEMS R2AA04010FCP00
1383 COPAL ELECTRONICS PRESSURE SWITCH, 0-0.5 KGF/CM2 PS83-501G-VCR-001
2459 YASKAWA SERVOPACK SGDA-02AP
5932 CTI-CRYOGENICS CABLE, POWER, UL/VDE 8112463G050
1609 NEMIC-LAMBDA POWER SUPPLY, 15V 3.4A 47-63HZ NNS30-15
8262 APPLIED MATERIALS MANIFOLD, OUTPUT, 1 HOLE, LEFT, 200MM PR 0040-47724
10555 YASKAWA ROBATIC ENCODER SIGNAL PROCESS XU-BDB0100T
20190 CCTC PCB ASSY 21451-1
7699 LEYBOLD TURBO CONTROLLER TURBOTRONIK AMT85472-3 NT150/360
8176 NOVELLUS END EFFECTOR, DIA 14" 15-145022-00
5450 ORIENTAL MTR INDUCTION MTR W/ PROPELLER & SHAFT LENGTH 450MM 4IK25A-A-E16
186 APPLIED MATERIALS 300MM OUTER SHIELD GROUND PLUNGER CAP 0020-42948
6250 FUJIKIN MFC FCS-WR FCSWR-4WS-798-F600#D
10486 ASYST KIT LPT EP LEADSCREW 113M 9701-2390-01
10902 RFPP MATCHING NETWORK, 5000WATTS @ 13.56MHZ 7626130010
3711 ASTECH AUTOMATIC MATCHING NETWORK POWER SUPPLY ATL100RATYL
5533 APPLIED MATERIALS C/A MFC ADPTR W/PURGE/SHUT-OFF,9PIN D:CA 0150-36097
10335 TAMRON LENS 1:16 25MM ?25.5
3394 CTI-CRYOGENICS GAUGE CABLE 8112695G300
14083 LANNER PCB, SINGLE BOARD COMPUTER BOARD IAC-H553C
13762 APPLIED MATERIALS HARNESS ASSY, PC CONNECTIONS ADAPTOR 0140-00783
154 LEYBOLD INFICON PCB TRANSPECTOR ASSY, AW911-110 911-112
76 EATON PCB INPUT TO I/O 80 BD, 1401300 1501300
11708 CKD AIR OPERATED VALVE AMD312-8US-6-0-4
T264 MKS BARATRON PRESSURE TRANSDUCER, 133.32 PA 626A-22895
20381 VEXTA 5 PHASE DPS THROT VLV ASSY, 0021-36747, 0090-39195 0021-09515
11203 ULVAC SUBSTRATE HEATER PSH-112MT
14083 LANNER PCB, SINGLE BOARD COMPUTER BOARD IAC-H553C
13762 APPLIED MATERIALS HARNESS ASSY, PC CONNECTIONS ADAPTOR 0140-00783
154 LEYBOLD INFICON PCB TRANSPECTOR ASSY, AW911-110 911-112
76 EATON PCB INPUT TO I/O 80 BD, 1401300 1501300
11708 CKD AIR OPERATED VALVE AMD312-8US-6-0-4
T264 MKS BARATRON PRESSURE TRANSDUCER, 133.32 PA 626A-22895
7040 ALLEN-BRADLEY ANALOG INPUT MODULE (12BIT) P/N:96188672 G01 1771-IFE/C
11560 ALLEN-BRADLEY 16PT CONTROLLOGIX ANALOG I/P MODULE,96240874 A01 1756-IF16/A
20381 VEXTA 5 PHASE DPS THROT VLV ASSY, 0021-36747, 0090-39195 0021-09515
7850 DAINIPPON SCREEN EMERGENCY SWITCH BOX 2VC41408
20621 PFEIFFER TURBO PUMP PM P04 265 A W/ CTLR TC HIPACE 80
6567 MKS MASS FLOW CONTROLLER, 15.5 SCCM, P/N: 3300188 1150C-4037V
10705 SMC DOUBLE ACTING PNEUMATIC CYLINDER MXS12-50BS-X504
11518 TEL BOARD CONN CHEM #02 W/ BOARD IO CHEM #02 (OYDK-059) OYDK-062
3304 NSK ESA SERVO DRIVER ESA-0408A35-21.1
10946 ISEL GERMANY AG WAFER HANDLING ROBOT, HS104339 0004 IWH-TA13S14HDF-2
10795 NIKON 50X EPI MICROSCOPE OBJECTIVE LENS CF PLAN 50X / 0.80
12546 FUJIKIN DIAPHRAGM VALVE BLOCK, TYPE N.C., O.P. 0.39~0.59MPA 84124
4916 SHINMAYWA BUILT-IN DD SPINDLE MOTOR B05-06-18M
9820 APPLIED MATERIALS HEATER 0190-21797
22052 CHIBA PRECISION MOTOR, X-8439, 62-223701A PG40-4 1/96
20870 NIKON PCB, MODULE BOARD 4S017-905-SPI02
8753 APPLIED MATERIALS SLIT VALVE 35 X 336MM KALREZ SEAL 9100 3870-00661
12972 PILZ 30/24
22098 HUBA CTRL GAUGE ASSY IN: 18-33VDC/24VAC+/-15% 0...+1.6BAR 692.914101041
7202 SENSARRAY PROCESS PROBE INSTRUMENTED WAFER 200MM 1530D-8-0023
4421 JASCO SUPERCRITICAL FLUID CHROMATOGRAPHY 44MM I.DX250MML
22454 VARIAN TOOL, CAM CATHODE IHC E17300480
15624 LAM RESEARCH ASSY,CAP,ELECTRODE,ESC 8",SEMI 839-440462-508
14170 MELLES GRIOT LASER HEAD 05-LHP-121-495
1732 MKS HIGH VACUUM PNEUMATIC VALVE, 796-003146-001 93-5024
3141 ASML LASER ASSY 4022.436.1723 112052-8
9870 B&R 28 SLOT X20 I/O SYSTEM, PS9400, DI8371, DO8322, PS2100 X20 BC 0063
12759 BOECO MAGNETIC STIRRER WITH HOT PLATE MSH-420
T160 MKS BARATRON VACUUM SWITCH,TYPE 141, LAM P/N: 853-031469-003 141A-12737
15724 LAM RESEARCH PCB 3-AXIS STEPPER DRIVER I/F W/ LCM-H02004DSF 810-066590-004
879 ZEISS PCB, 5X(AXICOM V23105A5305A201), 24V 348224-9039-100-3901-100
T245 MKS PRESSURE TRANSDUCER, 10 TORR 626A11TBE
20782 ASTRONIX PCB ASSY MD.S-2
20786 TJA / BAIRD PCB ASSY, 13924000, 13924100 13924200
20777 PLOTECH PCB ASSY 3378-2187A
20765 SALICRU PCB ASSY CI-235-15
1236 JVC 1/2 DIGITAL CCD CAMERA TK-C1381EG
2388 WAHL PLATINUM-RTD DIGITAL HEAT-PROBER THERMOMETER 392MVX
12838 TOKYO ELECTRON PCB, TAB22A-1/PURF2-LF W/ 2X 2L81-050032-11 2L81-050039-11
5279 TECHCON SYSTEMS DC SERVO MOTOR HEDS-5540 A01
5553 VERIFLO REGULATOR P/N 45700472EV SQ140E502PUPGPAEV
12395 LAMBDA POWER SUPPLY, 24V, 5A JWS120P-24
8989 MITSUBISHI POSITIONING UNIT AJ65BT-D75P2-S3
4992 APPLIED MATERIALS FLEX 3 E84 POD D LOOPBACK ADAPTOR 0150-05435
1216 MITSUBISHI MELSEC PROGRAMMABLE CONTROLLER FXON-24MR-ES/UL
12348 COMET VACUUM CAPACITOR, 50-500PF, 12/7.2KV CVUN-500BC/12-BAJL
6164 UNIT MFC ULTRACLEAN METAL SEAL UFC-8160
2102 OMRON TEMPERATURE CONTROLLER E5ZT-N08TC01-2
6346 HORIBA-STEC MFC SEC-E440 SEC-E400JSERIES SEC-Z313M
4380 APPLIED MATERIALS BRKT LEFT MOUNTING CHBR-MF RPG CHBR 300MM 0020-46291
7180 APPLIED MATERIALS FORGED 8 DXZ HEATER, HI-TEMP CERAMIC HEATER 0040-39240
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