MKS OEM-6A-14491-50
MKS OEM-6A-14491-50
廈門興銳達自動化設備有限公司 http://www.xrdzidonghua.com
MKS OEM-6A-14491-50汽輪機數(shù)字電液調(diào)節(jié)系統(tǒng)DEH的應用近年來隨著計算機技術的發(fā)展及用戶對自動化要求的不斷提高,中小汽輪機(特別是抽汽機組及聯(lián)合循環(huán)機組)也陸續(xù)開始應用數(shù)字電液控制系統(tǒng)。中小汽輪機以供熱機組為主,從控制系統(tǒng)角度講即調(diào)節(jié)系統(tǒng)為多變量控制系統(tǒng),采用液壓調(diào)節(jié)系統(tǒng)其控制品質(zhì)不高,例如熱電負荷調(diào)節(jié)產(chǎn)生耦合,自整性不夠,調(diào)節(jié)系統(tǒng)僅為比例調(diào)節(jié),調(diào)節(jié)精度不高,超調(diào)量大,調(diào)節(jié)時間過長,高低壓油動機不同步等,且調(diào)節(jié)參數(shù)制造廠內(nèi)一經(jīng)整定后,現(xiàn)場很難改變,這在抽汽汽輪機中尤為突出,用戶運行使用難度大;全液壓調(diào)節(jié)機組由于只能實現(xiàn)比例調(diào)節(jié),同時同步器調(diào)節(jié)范圍有限(一般96%-106%),在高壓機組(50MW以內(nèi)9MPa進汽參數(shù))常出現(xiàn)滑參數(shù)啟動整定的調(diào)節(jié)參數(shù)不能滿足額定初終參數(shù)下運行需要,例如表現(xiàn)為加不滿負荷或減不完負荷。
與傳統(tǒng)的液壓控制系統(tǒng)相比,數(shù)字電液控制系統(tǒng)由于使用數(shù)字計算機技術為基礎作為調(diào)節(jié)器來實現(xiàn)回路變量調(diào)節(jié)和系統(tǒng)靜態(tài)自整等,控制規(guī)律及參數(shù)(如解藕系數(shù)等)用軟件實現(xiàn),精確度高,能夠?qū)崿F(xiàn)完全靜態(tài)自整,采用比例積分及微分(PID)調(diào)節(jié)器,使系統(tǒng)靜態(tài)和動態(tài)性能都得到很大的改善,使得系統(tǒng)的過調(diào)量下降,穩(wěn)定性增強,過程時間縮短。
ST MICROELECTRONICS LM336 ST MICROELECTRONICS ZENER DIODE 2.49V
NATIONAL SEMICONDUCTOR LM340T15 NATIONAL SEMICONDUCTOR I.C. LM340-15 VOLTAGE ST
ST MICROELECTRONICS LM723CH ST MICROELECTRONICS I.C.
BLUE-M BLUE-M M05-A1 GASKET DOOR 7 FEET
STI M27C2001-12F1 STI Series 27 2 M-bit (256 K x 8) 120 ns UV Eraseable EPROM -
ST MICROELECTRONICS M27C64A ST MICROELECTRONICS I.C. 64 Kbit (8Kb x8) UV EPROM
IDI M300-13 EPROM IDI MOTHERBOARD REV. 13
MOTOROLA MAC210 MOTOROLA TRIAC 8A 600V
MOTOROLA MC14490P MOTOROLA I.C.
CAT MC1488N MC1488N
M.E.C. TECH INC MEC50000-522-8 DC Bias Plug Poly, MEC, model:50000-522-8
MOTOROLA MJ16012 I.C. FOR GLASSMAN POWER SUPPLY
SCS MJ2955 SCS TRANSISTOR PNP POWER
ST MJE2955T ST TRANSISTOR
MOTOROLA MJE3055T ST / MOTOROLA MJE3055T / CMJE3055T
NATIONAL SEMICONDUCTOR MM74HC109AN NATIONAL SEMICONDUCTOR I.C. J-K FLIP-FLOP
NATIONAL SEMICONDUCTOR MM74HC373N IC MC74HC373N
DISCO HI-TEC MOMDH298 DISCO ROLLER SWIVELLING SUPPORT
MOTOROLA MPF6660 MOTOROLA MOSFET TMOS SWITCHING FET TRANSISTORS
DARLINGTON MPSA13 DARLINGTON TRANSISTOR
MOTOROLA MTM15N50 MOSFET TRANSISTOR IRF453
BAUER N 16340 O-Ring for Oil Filter COMP E-220 N 16340
BAUER N09121 SIEVE DIRT TRAP COMP E-220 N 08362
CAT NE556N I.C. DUAL TIMER
NTE NTE1508 NTE I.C. BAR/DOT DISPLAY DRIVER
NTE NTE1749 INTEGRATED CIRCUIT, PUSH-PULL FOUR CHANNEL DRIVER
CAT NTE326 TRANSISTOR
NTE NTE466 NTE TRANSISTOR