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集散控制系統(tǒng)(Distributed Control System-DCS)集計(jì)算機(jī)技術(shù)、控制技術(shù)、通信技術(shù)、CRT技術(shù)于一體,廣泛應(yīng)用于生產(chǎn)過(guò)程控制系統(tǒng)。隨著計(jì)算機(jī)和網(wǎng)絡(luò)技術(shù)的飛速發(fā)展,產(chǎn)生了一種新型的控制系統(tǒng)———現(xiàn)場(chǎng)總線控制系統(tǒng)(Fieldbus Control System-FCS)。但國(guó)內(nèi)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(yīng)用廣泛、技術(shù)成熟,在現(xiàn)有的技術(shù)條件和市場(chǎng)條件下,F(xiàn)CS還不能完全取代DCS,而且目前現(xiàn)場(chǎng)總線設(shè)備和系統(tǒng)還十分昂貴。因此,除了新建企業(yè)外,國(guó)內(nèi)企業(yè)在較長(zhǎng)時(shí)間不可能全面采用現(xiàn)場(chǎng)總線技術(shù),而必須走逐步發(fā)展、過(guò)渡的道路。 ??我們?cè)谏虾J煞莨经h(huán)保部水質(zhì)凈化廠監(jiān)控系統(tǒng)的改造項(xiàng)目中,對(duì)3個(gè)生產(chǎn)單元已有的DCS和PLC進(jìn)行改造,增加通信功能,實(shí)現(xiàn)總調(diào)度室對(duì)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(zhì)凈化廠各生產(chǎn)單元的功能和建設(shè)階段,分為廠外調(diào)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(gè)生產(chǎn)單元。另外,在廠部設(shè)有總調(diào)度室,但是總調(diào)度室的監(jiān)控水平較為落后,改造之前基本上不能對(duì)各個(gè)生產(chǎn)單元進(jìn)行監(jiān)控。為了適應(yīng)生產(chǎn)需要,提高生產(chǎn)效率,改善操作條件,加強(qiáng)監(jiān)控手段,確保各生產(chǎn)裝置的正常運(yùn)行,急需對(duì)各生產(chǎn)單元和總調(diào)度室進(jìn)行技術(shù)和設(shè)備的更新改造,從而能在總調(diào)度室對(duì)各裝置進(jìn)行監(jiān)視管理,及時(shí)了解各裝置的運(yùn)行情況,達(dá)到指揮及時(shí)和調(diào)度準(zhǔn)確的目的。 2.1?現(xiàn)場(chǎng)監(jiān)控系統(tǒng)的改造 ??現(xiàn)場(chǎng)監(jiān)控系統(tǒng)的改造要充分利用原有儀表和設(shè)備,主要考慮可靠性和實(shí)時(shí)性。首先對(duì)自控程度較高的3個(gè)單元進(jìn)行改造(系統(tǒng)結(jié)構(gòu)見(jiàn)圖2—1): ??四期污水處理生產(chǎn)單元控制設(shè)備配置了兩套ALLEN-BRADELY公司PLC設(shè)備。25塊開(kāi)關(guān)量輸入信號(hào)卡,可采集384點(diǎn)信號(hào);7塊開(kāi)關(guān)量輸出信號(hào)卡,可輸出112點(diǎn)信號(hào);3塊模擬量輸入信號(hào)卡,可采集24點(diǎn)信號(hào)。兩套AB—PLC通過(guò)DH+(數(shù)據(jù)高速通道)實(shí)現(xiàn)數(shù)據(jù)共享。在原有的現(xiàn)場(chǎng)控制計(jì)算機(jī)上分別增加以太網(wǎng)卡,通過(guò)以太網(wǎng)將實(shí)時(shí)數(shù)據(jù)送到總調(diào)度室處理。??輸出192點(diǎn)信號(hào);1塊模擬量輸入信號(hào)卡,可采集8點(diǎn)信號(hào)。系統(tǒng)運(yùn)行采用遙控開(kāi)關(guān)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(tái)現(xiàn)場(chǎng)操作站,用點(diǎn)對(duì)點(diǎn)方法連接,使PLC的數(shù)據(jù)通過(guò)現(xiàn)場(chǎng)操作站送到以太網(wǎng)上,與總調(diào)度室監(jiān)控計(jì)算機(jī)通信。但RS-232傳輸速率只有9600bps,操作站僅對(duì)現(xiàn)場(chǎng)起到監(jiān)視作用。
12278 VERIFLO 3-WAY HIGH PURITY PNEU VALVE, P/N: 45300401EV 955Y3NC/NCFSFFFBEV1873 HPS ISO-UNIVERSAL WELD FLANGE 100760208
10014 APPLIED MATERIALS LAMP PLUG IN 24V W/SHADE EXTENSION 1010-01427
3540 ALLEN-BRADLEY 8-POINT DISCRETE I/O SIMULATOR MODULE 1771-SIM
9948 ROFIN OBJEKTIVHALTESATZ; F170; 532; TH 101114312
16799 APPLIED MATERIALS CABLE ASSY, PUMP UMBILICAL, 50FT 0150-16007
5641 NIKON MICROSCOPE OBJECTIVE LENS PLAN 20 /0.4 160/0.17
11616 TEL PCB,TTLM02-12 MDIF5B I/O FURNACE 2180-021108-11
5081 APPLIED MATERIALS .650" 300MM 3 CHANNEL HEATER LVL CALIBRATN REF 0190-11355
15721 LAM RESEARCH PCB ASSY PWR SUPPLY ESC BICEP HV-RP 810-495659-511
10934 MKS IN SITU DIAGNOSTIC ACCESS VALVE IDA-T007
7395 GRANVILLE-PHILLIPS 354 MICRO-ION VACUUM GAUGE MODULE 354001-YG-T
1005 KEYENCE POWER SUPPLY KV-U2
10171 RKC TEMPERATURE CONTROLLER CB400
10082 MKS REGULAR VALVE 1" BELLOW 25KF FITTING CVNL-K2-MKKVV
11116 APPLIED MATERIALS PEDESTAL, UNIVERSAL 200MM 3 POINT 0040-21367
19377 LAM RESEARCH WELDMENT 2 VLV MANF 944AOPLPNCSH11 839-016784-005
16280 APPLIED MATERIALS ASSY, RF FILTER BOX PRODUCER SE 0010-35530 0090-04947
5287 VERIFLO REGULATOR, 45800978-1 (LOT OF 3) SMSQ2MICRO130E30102
6344 HORIBA-STEC MFC Z500 SEC-Z522KXN
8950 APPLIED MATERIALS MOUNT PLATE 0021-79311
B67 ADVANCED ENERGY MDX PINNACLE POWER SUPPLY 3152338-018A
963 GEDORE/ICT DEDICATED TOOLS BOX 490604 WITH TORCOFIX-K RAHSOL 490604
20778 SANYO DENKI PCB, SERVO DRIVE POWER BOARD PRS-4286C
20784 EXIDE ELECTRONICS PCB, EE RECTIFIER CONTROL BOARD, 101072866-007 101072866
21407 APPLIED MATERIALS SHAFT LWR LFT ARM ROBOT 0020-76067
8992 APPLIED MATERIALS POLISHER PART 0040-54799
20875 KOLLMORGEN SERVOTRONIX PCB ASSY TURBO RMM RESOLVER PRD-0016400G-10
7540 KOMATSU MW200N SILICON WAFER STORAGE W/ 4 SILICON MW200.N.C
23049 YASKAWA ELE AC SERVO MTR W/ NEUGART PLE 40, 2070048 SGMAH-01A1F-AP51
21378 STROMAG DRIVESTAR LTI DRIVE, 704111, 182-01861 U-DS 020.1
771 FURON PNEUMATIC VALVE, NOVELLUS P/N: 34-053380-00 NV2-144NC-HP
4905 VAT GATE COMPL. 83530-R1
4101 ENDRESS+HAUSER LIQUISYS-P CPM220-21AA02
10212 APPLIED MATERIALS SEPC, LIGHT CURTAIN SENSORS, 5.X FI 0190-24830
13228 APPLIED MATERIALS WTR MANIFOLD, ESC, IPS 0021-10917
15339 APPLIED MATERIALS HANDLE, LID TC 0020-41012
15476 APPLIED MATERIALS TIP,SUSCEPTOR SHAFT,OUTSIDE 0200-00207
16055 APPLIED MATERIALS COUPLING MAGNETIC ROTATION 0020-36033
15899 SUPERCHEM O-RING,PVMQ AS568A-446
16711 APPLIED MATERIALS CABLE, LIQ SENSE INTERCO 0150-09605
16748 APPLIED MATERIALS HARNESS ASSY,DTLR STATUS GPLIS 0140-38487
15582 LAM RESEARCH WAFER HOLDER ARM, 6" 715-130078-006
14805 APPLIED MATERIALS MOUNT, ROTATION ADJ. ARM 0020-35549
2068 ANALOG DEVICES PCB, I/O BOARD RTI-1240-R
16106 APPLIED MATERIALS PCII BELLJAR BEADBLAST FIXTURE 0270-20268
17723 ADVANTEST PCB ASSY, PGH-819207BB2 BGH-019207
17653 ADVANTEST PCB ASSY, PGG-417152AA1 BGG-017152
18223 PULNIX MONOCHROME INTERLACED SCAN CCD CAMERA TM-745E
10391 APPLIED MATERIALS FLANGE, EDWARDS PUMP, CVD EXH SW 0040-21826
3882 TDK CORPORATION POWER SUPPLY FAK05-5RO
9936 ROFIN HALTER; SHG; 5X5X18; OWC;O. JUSTIEREINHEIT 101110075
1800 STI MCF4200E DIN 081608 2X 2R CABLE WITH NICKEL PLATED 82322-0010
19252 APPLIED MATERIALS ASSY, ORIENTER LASER OPTICS, 0060-77071 0010-00957
7552 SMC DUAL ROD PNEUMATIC CYLINDER CX2N15-50
6408 AERA MFC FC-PA785C FC-PA785CT-BW
8649 BENKAN SCV VACUUM VALVE W/ BELLOWS VALVE & PNEUMATIC CYLINDER LK828
949 GRANVILLE-PHILLIPS 307 VACUUM GAUGE CONTROLLER 307
13297 WESTERN SERVO DESIGN PCB,LINEAR SERVO AMP,ASSY 10026-100 LDH-A1-3/2.5-WJA
注:聯(lián)系我時(shí),請(qǐng)說(shuō)是在“傲立機(jī)床網(wǎng)”上看到的,謝謝!