1770-XF
1770-XF
1770-XF
對送水泵房中的2#泵與4#泵實(shí)施變頻節(jié)能改造，在已建成的送水泵房內(nèi)對兩組630kW/10kV電機(jī)機(jī)組添加變頻調(diào)速系統(tǒng)的改造，將原設(shè)計(jì)的轉(zhuǎn)子串級調(diào)速拆除改為高壓變頻器變頻調(diào)速。采用變頻器一拖二手動(dòng)切換方式：(1)高壓供電回路使用舊電路。(2)采取恒壓變流形式來調(diào)節(jié)技改送水泵的轉(zhuǎn)速，將壓力維持在0.5MPa;(3)在MCC室并列安置原低壓供電設(shè)備及變頻柜。(4)增設(shè)10kV電力電纜，并更換Y560-8型電機(jī)1臺。(5)通過硬接線來實(shí)現(xiàn)與PLC控制系統(tǒng)的數(shù)據(jù)交換，可是必須將通訊接口保留下來，選用Profib-us-DP作為通訊協(xié)議。(6)調(diào)速范圍控制在20-50Hz。
對于一臺水泵來說，其水壓、流量和所需功率均會(huì)因葉輪轉(zhuǎn)速的改變而發(fā)生改變，它們之間的關(guān)系如下：
從上述關(guān)系可總結(jié)出如下結(jié)論：Q(水量)∝n(轉(zhuǎn)速);P(水壓)∝n(轉(zhuǎn)速);N(水泵軸功率)∝n(轉(zhuǎn)速)，也就是說當(dāng)轉(zhuǎn)速發(fā)生改變時(shí)，水壓、水量以及功率的變動(dòng)速度也是各不相同的，而且功率的改變速率最大。當(dāng)轉(zhuǎn)速降至70%時(shí)，水量也會(huì)隨之降至70%，可水壓會(huì)下降至49%、功率會(huì)下降至34.3%?？梢姡ㄟ^對水泵轉(zhuǎn)速進(jìn)行調(diào)節(jié)，便可改變水壓和水量，無需對閥門進(jìn)行調(diào)節(jié)來改變管道的阻力特點(diǎn)，這樣可以有效的減少節(jié)流損失，從而實(shí)現(xiàn)節(jié)能的效果。
3、高壓變頻器的優(yōu)勢
高壓變頻器具有如下幾點(diǎn)優(yōu)勢：
(1)利用高壓變頻器對電機(jī)實(shí)施調(diào)速改造，如果變頻器出現(xiàn)故障，電機(jī)仍可以直接掛工頻電網(wǎng)運(yùn)作，可以有效地避免生產(chǎn)損失。而且高壓變頻器屬于高科技，具有較高的可靠性，可以有效的降低維修率，減少維護(hù)成本，從而使供水企業(yè)的經(jīng)濟(jì)效益實(shí)現(xiàn)全面的提升。
(2)利用高壓變頻器對電機(jī)實(shí)施調(diào)速改造時(shí)，只需將原先電機(jī)與開關(guān)的相連電纜斷開，并將變頻器加入其中即可，無需對機(jī)械與電機(jī)的連接關(guān)系進(jìn)行更換，也無需更改任何基礎(chǔ)，操作便捷，而且也不會(huì)因場地而受到限制，具有較好的適應(yīng)性。
MOTOROLA MVME VME SYSTEM CPU CHASSIS
MARCONI MEDICAL SYSTEM HYBRICON VME CHASSIS ASSEMBLY
Motorola MVME050 System Controller Module VME Board 050
Uniwire system UV-250 VME interface
OREGON MICRO SYSTEMS VME 44
ESP 1600-1012/1 VME BUSS Data Systems CPU CONTROL CARD
COMPUTER RECOGNITION SYSTEMS VME BOARD 8815CX528
COMPUTER RECOGNITION SYSTEMS VME BOARD 8937-0000
COMPUTER RECOGNITION SYSTEMS VME BOARD 8805DP862
COMPUTER RECOGNITION SYSTEMS VME OVERLAY 8946-0001
VME Systems ADAPTER TO IDE CONVERTER - CF-IDE1
MOTOROLA MVME025 SYSTEM CONTROLLER VME MODULE
IST Integrated Systems Technology DS3/DS3I VME Plug-In
Integrated Systems Technology Quad Serial VME Plug-In
Sopha Medical Systems SCSI VME Plug-In Board
Sopha Medical Systems Memory VME Plug-In Board
Sopha Medical Systems Logic Acquisition VME Plug-In
Sopha Medical Systems GE-Raytheon VME Plug-In Board
Sopha Medical Systems Color VME Plug-In Board
Sopha Medical Systems ADC VME Plug-In, Analog/Digital
Sopha Medical Systems Graphics VME Plug-In Board
ADVANCED SYSTEMS INC VME-DIO32 USPP VMEDIO32
Systems Integration + 12-Slot VME Enclosure Chassis
Systems Intergration + Inc. 5-Solt VME Tower Enclosure
AMAT Oregon Micro Systems, OMS VME 44
AMAT Oregon Micro Systems, OMS VME 44
AMAT Oregon Micro Systems, OMS VME 44
AMAT Oregon Micro Systems, OMS VME 44
Oregon Micro Systems (OMS) VMEX-6 VMEbus VME
Uniwire System UV-250 VME Interface (21)
Systems Intergration + Inc. 5-Solt VME Tower Enclosure
I.M. Systems PN: 40-4833 21-Slot VME Chassis Mainframe
AEON Systems VME3801 VME 3801 Circuit Card Board
APW MaxChassis II System Enclosure VME Mainframe
CAMBRIAN SYSTEMS MISSING PULSE VME 830 016763 001
Systems Integration Plus 12-Slot VME Enclosure Chassis
General Micro Systems GMS GMSV36-01-D CSMA VME Board
AirNet Cellular Phone System Repeater w/ VME Boards#H98
General Micro Systems GMS GMSV46-01D CSMA VME Board
GENERAL MICRO SYSTEMS VME MINI DISK DRIVE BD. W/FUJITSU
ITAC SYSTEMS 4022-430-23621 VME to TERMINAL CABLE - NEW
DY4 SYSTEMS VME BOARD P/N OBYC3ASSY901092?-007 01
