Bailey DCS卡件 ABB Bailey P-HC-BRC-30000000 Symphony Harmony Bridge Controller 6644375T1 Infi90
Bailey DCS卡件 ABB Bailey P-HC-BRC-30000000 Symphony Harmony Bridge Controller 6644375T1 Infi90
Bailey DCS卡件 ABB Bailey P-HC-BRC-30000000 Symphony Harmony Bridge Controller 6644375T1 Infi90
隨著DCS在火電廠中的廣泛應(yīng)用,其在機(jī)組安全穩(wěn)定運(yùn)行中所占據(jù)的主導(dǎo)地位愈加突出。由于DCS設(shè)備軟硬件的可靠性、控制邏輯的完善和合理性、熱工人員維護(hù)和檢修水平等諸多因素的影響,使機(jī)組誤跳閘事件仍時(shí)有發(fā)生。因此進(jìn)行有效的技術(shù)管理和正確的檢修維護(hù),保持火電機(jī)組DCS的穩(wěn)定、可靠運(yùn)行也就日漸成為熱工人員日常管理、維護(hù)的重點(diǎn)。為此筆者結(jié)合上述案例分析,從提高控制系統(tǒng)可靠性著手,提出一些防范措施供檢修維護(hù)中參考:
?。╨)對DCS設(shè)備和檢修維護(hù)實(shí)行全過程管理,盡早發(fā)現(xiàn)缺陷并及時(shí)處理。完善DCS自診斷和故障報(bào)警功能,對DCS運(yùn)行狀況的實(shí)時(shí)監(jiān)控不僅要監(jiān)視主控制器的狀態(tài),還要監(jiān)視主控制器網(wǎng)絡(luò)的狀態(tài)。
?。?)制定合理的定期維護(hù)制度,詳細(xì)規(guī)定檢查維護(hù)的內(nèi)容、方法和周期,并對檢查結(jié)果進(jìn)行分析,采取針對性的預(yù)防措施。鎮(zhèn)海電廠自從試行這項(xiàng)制度以來,有效地控制了DCS故障的發(fā)生。
?。?)制訂DCS應(yīng)急預(yù)案和典型故障處理方案,防止因維護(hù)不當(dāng)引起的DCS故障。
?。?)選用品質(zhì)較好的備品配件,如主控制器的散熱風(fēng)扇、DP插頭等,對于易損部件實(shí)行定期更換。
?。?)對電子室的環(huán)境溫度進(jìn)行遠(yuǎn)程監(jiān)測,接入DCS顯示,實(shí)時(shí)掌握電子室環(huán)境溫度的變化。使用*空調(diào)的電子室還應(yīng)注意濕度的控制,如有必要應(yīng)增裝獨(dú)立的空調(diào)或除濕裝置。
(6)檢修時(shí)對模件電路板外觀進(jìn)行檢查,能起到很好的預(yù)防效果。
?。?)深入了解DCS軟件性能,采取合理的組態(tài)方法防止工況下的誤動;禁止使用“超級用戶”等不規(guī)范的手段進(jìn)行軟件修改。
FOXBORO P0911RN-C 120V-AC CONTROLLER D472208
FOXBORO P0911RN-C 120V-AC CONTROLLER D471879
FOXBORO P0911QN-A 120V-AC CONTROLLER D471871
FOXBORO P0900WT FBM-10 15 TERMINATION CABLE-WIRE REV H D365942
FOXBORO P0800MY I/A SERIES KEYBOARD CABLE REV 03 D499896
FOXBORO P0800HS I/A SERIES WORKSTATION BAY CRT CABLE REV P D499891
FOXBORO P0800DV I/A SERIES FIELDBUS EXT CABLE REV H D499887
FOXBORO P0800DG I/A SERIES FIELDBUS 2FT EXTENSION CABLE-WIRE D500696
FOXBORO P0800DC PIO CABLE ISOLATOR D228852
foxboro p0800dc i/a series pio isolator cable
Foxboro P0800DA P10-FTUC-Z Cable
FOXBORO P0800CC I/A SERIES GC10 CRT CABLE 100 FEET REV M D499894
Foxboro P0700HU F.B.M. 9C/14C Term. Discrete Wire
FOXBORO P0700HE CABLE/WIRE DISCRETE ASSEMBLY TERMINAL D385966
foxboro p0500ru i/a cable termination assebly fbm3a/33a 3 wire
Foxboro P0500JX Peripheral Cable Assembly 2 Feet
FOXBORO P0400ZG-0M I/A SERIES NODE INTERFACE P0400ZG REV 0M MODULE (259)
FOXBORO P0400YR FBM 15 I/A SERIES 120V-AC REV H EXPANSION I/O MODULE D400533
FOXBORO P0400YJ FBM 08 I/A SERIES 120V-AC REV F2 INPUT MODULE D400532
FOXBORO P0400YJ FBM 08 I/A SERIES 120V-AC REV E2 PROCESSOR MODULE D400534
FOXBORO P0400YJ FBM 08 I/A SERIES 120V-AC REV C PROCESSOR MODULE D400524
FOXBORO P0400VR-0K I/A SERIES CONTROL PROCESSOR P0400VR REV 0K MODULE (259)
FOXBORO P0400VR CP 10 CPU CONTROL PROCESSOR MODULE I/A SERIES REV K B327045
FOXBORO P0400VR CONTROL 10 MODULE CPU PROCESSOR I/A SERIES REV H+ B327042
FOXBORO P0400HH TERMINATION CABLE ASSEMBLY REV M CABLE-WIRE D371287
foxboro p0400hh i/a cable termination assebly fbm1/37/43
FOXBORO P0400DA-0K I/A SERIES MA 0-20 INPUT MODULE FBM 01 (259)
FOXBORO P0400CV I/A SERIES X-BUS REV 0207 CONNECTOR D499912
FOXBORO P0122AE 9082-01 3-15PSI 1/4 IN NPT PRESSURE GAUGE D475598
FOXBORO P0121AM CAPSULE ASSEMBLY
FOXBORO OUTPUT GAUGE 0-60 PSI 9067-02 906702 P0122AX 1/8" NPT 1.6" BASE
FOXBORO O2 PAS AIR POWER POSTIONER
FOXBORO N-E27R-S2RA6-CS-N/SRC RECORDER NE27RS2RA6CSNSRC
FOXBORO N-E27R-S2RA6 RECORDER 12V 60HZ NE27RS2RA6
FOXBORO N-E11GM 25-42V-DC 200-2000PSI PRESSURE TRANSMITTER D452754