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集散控制系統(tǒng)(Distributed Control System-DCS)集計算機技術、控制技術、通信技術、CRT技術于一體,廣泛應用于生產(chǎn)過程控制系統(tǒng)。隨著計算機和網(wǎng)絡技術的飛速發(fā)展,產(chǎn)生了一種新型的控制系統(tǒng)———現(xiàn)場總線控制系統(tǒng)(Fieldbus Control System-FCS)。但國內生產(chǎn)企業(yè)的情況是:大多數(shù)企業(yè)還處于模擬儀表和人工控制的階段,采用DCS控制系統(tǒng)的企業(yè)仍是少數(shù)。由于DCS應用廣泛、技術成熟,在現(xiàn)有的技術條件和市場條件下,F(xiàn)CS還不能完全取代DCS,而且目前現(xiàn)場總線設備和系統(tǒng)還十分昂貴。因此,除了新建企業(yè)外,國內企業(yè)在較長時間不可能全面采用現(xiàn)場總線技術,而必須走逐步發(fā)展、過渡的道路。 ??我們在上海石化股份公司環(huán)保部水質凈化廠監(jiān)控系統(tǒng)的改造項目中,對3個生產(chǎn)單元已有的DCS和PLC進行改造,增加通信功能,實現(xiàn)總調度室對各生產(chǎn)裝置的集中監(jiān)控。 2?系統(tǒng)改造方案?? 根據(jù)水質凈化廠各生產(chǎn)單元的功能和建設階段,分為廠外調節(jié)池、污水一段、氧化溝、四期污水處理、污泥脫水、污泥干化6個生產(chǎn)單元。另外,在廠部設有總調度室,但是總調度室的監(jiān)控水平較為落后,改造之前基本上不能對各個生產(chǎn)單元進行監(jiān)控。為了適應生產(chǎn)需要,提高生產(chǎn)效率,改善操作條件,加強監(jiān)控手段,確保各生產(chǎn)裝置的正常運行,急需對各生產(chǎn)單元和總調度室進行技術和設備的更新改造,從而能在總調度室對各裝置進行監(jiān)視管理,及時了解各裝置的運行情況,達到指揮及時和調度準確的目的。 2.1?現(xiàn)場監(jiān)控系統(tǒng)的改造 ??現(xiàn)場監(jiān)控系統(tǒng)的改造要充分利用原有儀表和設備,主要考慮可靠性和實時性。首先對自控程度較高的3個單元進行改造(系統(tǒng)結構見圖2—1): ??四期污水處理生產(chǎn)單元控制設備配置了兩套ALLEN-BRADELY公司PLC設備。25塊開關量輸入信號卡,可采集384點信號;7塊開關量輸出信號卡,可輸出112點信號;3塊模擬量輸入信號卡,可采集24點信號。兩套AB—PLC通過DH+(數(shù)據(jù)高速通道)實現(xiàn)數(shù)據(jù)共享。在原有的現(xiàn)場控制計算機上分別增加以太網(wǎng)卡,通過以太網(wǎng)將實時數(shù)據(jù)送到總調度室處理。??輸出192點信號;1塊模擬量輸入信號卡,可采集8點信號。系統(tǒng)運行采用遙控開關操作與全模擬流程盤顯示。在原有的Siemens S5-115UPLC上增加RS-232通訊模塊(CP524)和1臺現(xiàn)場操作站,用點對點方法連接,使PLC的數(shù)據(jù)通過現(xiàn)場操作站送到以太網(wǎng)上,與總調度室監(jiān)控計算機通信。但RS-232傳輸速率只有9600bps,操作站僅對現(xiàn)場起到監(jiān)視作用。
19287 DAIFUKU RM/TFE/CONV.MAINTENANCE UNIT CONTROLLER, 7A00981HA2 AGH8AA1119755 APPLIED MATERIALS SCR PN HD 6-32 X.44 HAST 0020-30895
14450 APPLIED MATERIALS HOSE ASSY FLEX BRAID 1/4IDX23.5L 1/4VC, 2FT 3400-01134
14906 WASCO VACUUM SWITCH, 30"HG, 1A, 115 VAC SV129-31S3C/7774
15266 ORIENTAL MOTOR PCB, 5-PHASE DRIVER, EB2276-4G, EB2277-4G A4509-048
16599 PISCO 10 SLOT VACUUM GEN ASSY W/FVUS011-NA VKMH05W-S5/3253/8S2G-B10-NA-VBS
17514 SMC 8 SLOTS VLV MANF + VLVS W/ VACUUM SWITCH ZSE3-0X-21 VJ324M & VJ314
7330 IFM SMARTLINK DP PROFIBUS AC1375
157 ASML PCB POWER SUPPLY INTERFACE 4022.436.1609
21750 ORIENTAL MOTOR VEXTA 2-PHASE STEPPING MOTOR W/ BALL SCREW C9337-9212KM
6138 CELERITY MFC IN3XP MASSS FLOW CONTROLLER BBYLUA002
6570 BROOKS MASS FLOW CONTROLLER, GAS: AR, 300 SCCM GF120CXXO
10943 APPLIED MATERIALS ASSY, SLIT VALVE, METAL ETCH, VITON 0010-70615
5453 ECI TECHNOLOGY PSD/3 SYRINGE PUMP, VALVE LU0970
20580 EMI PCB ASSY, SUNG WEI 11620-01P-707(E1) 098-11620-00
20961 OMRON PCB, TEMPERATURE CONTROLLER, 3385804-8C E5ZT-N08TC01
20913 APPLIED MATERIALS HARNESS ASSY, DR 11-12-13-14 MTR ENC 0140-70601
20910 APPLIED MATERIALS HARNESS ASSY LL MOTION SV I/O PRODR XP 0140-62711
14130 MDC SYNCHRONOUS STEPPING MOTOR, 670000 BRM-133
18685 APPLIED MATERIALS HEATER JACKET SLEEVE 1410-02438
18684 APPLIED MATERIALS HEATER JACKET SLEEVE 1410-02437
19922 FUJIKOKI PRESSURE SWITCH VDP 20TF
18683 APPLIED MATERIALS HEATER JACKET SLEEVE 1410-02418
19147 ADVANCED DELIVERY & CHEMICAL SYSTEM PCB ASSY 969
8230 DAINIPPON SCREEN FILTER BOX ASSY 2VC48054
7961 INTEGRATED DYNAMICS ENGINEERING PREAMP FOR MAXCON 1000 871006-03
2696 TDK CORPORATION POWER SUPPLY, 100-240V 0.8-0.4A 50-60HZ RKW05-10RC
9244 BIMBA ROTARY CYLINDER PT-074180
12019 KOGANEI ELEAVE ELECTRIC HAND W/ EWHC-NH NHB5749 & ACCS. EWHA12A-C-5L
13233 TEXAS INSTRUMENTS PCB, READER SYS CTRL MOD W/RI-STU-MB6A-03 RI-CTL-MB6A-03
44 TOKYO ELECTRON PCB, TTLA08-13 F-MFC_AI_4, 3880-200122-11 3895-120917-11
6039 HORIBA-STEC MFC Z500 SEC-Z522KX
4987 APPLIED MATERIALS HINGE, GENERATOR RACK, PRODUCER SE 0015-01466
661 CONTROLAIR INC I/P TRANSDUCER ELECTROPNEUMATIC TYPE 500X 500-AH
12077 ELMOTEC CONTROLLER LVMS 4800R2
14888 APPLIED MATERIALS I/O BLOCK, 300MM MAINFRAME DEVICE NET, DIP294 0190-13220
16900 APPLIED MATERIALS MOD PWR DRIVER CONTROL MA-CH 0150-08273
14084 TOKYO ELECTRON PCB, TOUCH SENSOR II, 1208-001167-11 1281-001167-1
19516 DIGITAL DYNAMICS PCB ASSY, SIO/SSIOC I/O VER2 005943-B
10534 SMC SI UNIT 16-PORT PNEUMATIC MANIFOLD (IN50310) IN503-09
2716 DIGITAL POWER CORP POWER SUPPLY US250-124
16706 APPLIED MATERIALS HARN ASSY, ENCODERANDHOME SENSOR DRIVER, D 0140-76929
15220 LAM RESEARCH WELDMENT DUAL GAS INJECT 2300 839-016784-002
4173 SIEGER ELECTROCHEMICAL TRANSMITTER SERIES 2000 02000-A-2134
10503 COGNEX IS5413-00 SMART CAMERA W/ PENTAX LENS 800-5830-4R A
973 SWAGELOK FLEXIBLE METAL HOSE SS-FM8RM8RF8-48
9721 SEW EURODRIVE BRAKING RESISTOR (826 269 1) (BW 100-005) 802 272 0
9112 LAM RESEARCH KLA-TENCOR VIDEO FRONT END 2 ES20XP 740-613212-000
11273 IWAKI METERING PUMP EH-E56VC-20EPE5
17550 BANNER WORLD-BEAM MINIATURE SELF-CONTAINED SNSR Q12AB6FF30
22056 AMETEK STEPPER LINEAR ACTUATOR E35H4J-2.33-A04
9030 VARIAN JUNCTION BOX CHT-100 FY102-10100B
268 LAM RESEARCH PCB, EDGE DETECTOR BREAKOUT BOARD 810-17071-001
19562 LAM RESEARCH BAFFLE PLATE 8'' 715-011913-083-H-1011232-AUK-15-132-0835
21766 NIDEC SERVO STEPPER MOTOR W/ ENCODER RENCO-R35I KH56KM2B082
21811 YASKAWA ELECTRIC AC SERVO MOTOR W/O ENCODER COVER SGM-01U3B4L
21804 FAULHABER DC SERVO MOTOR W/ MINIMOTOR 23/1 66:1, P/N: 942193 2842S012C
12810 CTI CRYOLINE PRESSURIZED STAINLESS STEEL HOSE,10FT LONG 8043074
8646 OMRON PANEL METER K3NX-VD1A-T1
7528 TOKYO ELECTRON ELECTRODE BOTTOM, P/C (85P-ESC-NW2-UP) ES1885-023137-17
12091 MITSUBISHI 3 PHASE AC SERVO MOTOR, 106V, 100W, 3000R/MIN HF-KP13
19384 VIPA DIGITAL INPUT MOUDLE, DI 16XDC24V VIPA 221-1BH10
9666 CTI CRYO-FLEX HELIUM LINE/HOST, 14' 3/4" 8043086G168
10322 RKC REX-C100 TEMPERATURE CONTROLLER C100FK02-V*GN
1430 PULNIX COMPACT MONOCHROME CAMERA TM-7CN
18419 LOVE CONTROLS CORP SELF TUNE PLUS TEMPERATURE CONTROLLER 16111
1236 JVC 1/2 DIGITAL CCD CAMERA TK-C1381EG
10534 SMC SI UNIT 16-PORT PNEUMATIC MANIFOLD (IN50310) IN503-09
9001 EBARA ROUGH PUMP CABLE 140INCHES (9A82) A10S
15243 ROSS ENGINEERING DIGITAL VOLTMETER/AMPLIFIER VMD2A
10044 TELI CCD COLOR CAMERA W/ TAMRON LENS 1:1.6 (TK4498A5 01) CS5260DP
10254 ALLEN-BRADLEY FLEX I/O OUTPUT MODULE 4PNT ANALOG 12BIT(1794-ADN) 1794-OF41
12832 CTI-CRYOGENICS ON-BOARD WATERPUMP 8116340G001
12106 FESTO GUIDE UNIT FOR ISO CYLINDER, P/N: 33481 FEN-12/16-125-KF
12702 HP PCB, JET DIRECT PRINT/ETHERNET CARD 10BASE-T 5182-4752
5647 NIKON MICROSCOPE OBJECTIVE LENS BD PLAN 60/0.80 210/0
注:聯(lián)系我時,請說是在“傲立機床網(wǎng)”上看到的,謝謝!