1395-B79-D5-P12-P50;
1395-B79-D5-P12-P50现货;
1395-B79-D5-P12-P50供应。
风机、水泵设备通常是以流量为控制对象的。传统的流量控制方法是阀门/挡板控制法,即通过关小和开大阀门/挡板的开度来调节流量。阀门控制法的实质是通过改变管网阻力大小来改变流量。因此,这种控制方式当所需流量减少时,压力反而会增加,故轴功率的降低有限,此时,过剩的风机、水泵功率将导致压力增加而白白浪费掉了。
风机、水泵节电器可在保持阀门/挡板开度不变的前提下,通过改变风机、水泵的转速来调节流量,其实质是通过减少流体动力来节电。
由流体力学理论可知,流量与转速的一次方成正比,压力与转速的平方成正比,轴功率与转速的三次方成正比。
因此,采用风机、水泵节电器这种控制方式时,当所需流量减少时,轴功率将显著降低。例如,当流量下降到80%,转速也下降到80%时,轴功率将下降为额定功率的51%。这种控制方式可从根本上消除风机、水泵设备由于选型或负荷变化普遍存在的“大马拉小车”的动力浪费现象,消除了挡板节流阻力,使风机、水泵始终运行在工作状态。
风机、水泵节电器的平均节电率为30%-60%,具有投资回收期短,受益期长等特点,是现代风机、水泵控制之理想设备。
10) 苦恨年年压金线,为他人作嫁衣裳。(唐·秦韬玉〈贫女》)
————————————————————
From CanadaLM613410B TIMKEN New Bearings
GE FANUC GENIUS IC660EBD021B IC660EBD021 NEW
From Canada
Siemens Simatic S5 6ES5451-7LA11 6ES5-451-7LA11 V.06
476 90219 TIMKEN New Bearings
INDRAMAT Ventilator Lüfter LE5-024
Siemens Simatic S5 IM300 6ES5300-5CA11 6ES5-300-5CA11
M53648 90010 TIMKEN New BearingsPANASONIC MSMA042A1A AC SERVO MOTOR 106 V, 2.5A, 200Hz, 3000 r/min, 0.4 kW OUT
Siemens Simodrive Verbindungsleitung 6SN1161-1CA00-0AA1From Canada
Panasonic servo motor MSMA202D2V good in condition for industry useTimken HH923649 / HH923610 HH923649HH923610 Cone Bearing And Cup New No Box
GE FANUC A20B-2901-0700/01A A20B-2901-0700 NEW
UNIVERSAL JOINT , COOPER TOOLS # 20A-840 2520012314380Timken bearing 67390-90046 67390/332
From Canada
Siemens Simatic S7 SM422 6ES7422-1BL00-0AA0 6ES7-422-1BL00-0AA0 V.04
760 90047 TIMKEN New Bearings
Siemens Simatic S5 WF1470 6FM1470-7AA25 MemoryOne-day shipping available
XYCOM XVME-531 NSPP XVME531
Siemens Sitrans T 7NG3041 Messumbbbber Messwandler Ex
52400 90051 TIMKEN New Bearings
GE Fanuc IC660ELB906R IC660ELB906 INTF MOD
One-day shipping available
XYCOM 9462-0163040016014 USPP 9462016304001601
526A TIMKEN New Bearings
9486 XYCOM MONITOR LCD TOUCH SCREEN **1YR REMANUFACTURE
FANUC Cable Linear Scale Kabel LX660-4077-T230/L10R003From Canada
Siemens Memory 6FX1822-1BX01-2BXYCOM 97712-030 NSPP 97712030
GE FANUC A06B-6093-H102 SERVO AMP
L848810 TIMKEN New Bearings
From Canada
Newly listedXycom XVME-955 IDE 1.44MB Floppy Disk 6.4GB Hard Drive 6U-VMEbus Storage Module
GE Fanuc BOARD A16B-2300-0022/03B A16B-2300-0022 ,SEW Eurodrive EMV - Modul EF 014-503 8263841 3 x 230-500V 5A
Siemens Simatic S5 Baugruppe 6ES5756-0AA1 6ES5-756-0AA1FANUC CNC Screen Display Function A02B-0207-K770#EN07
Siemens Simatic S5 6ES5451-4UA12 6ES5-451-4UA12 NEU Versiegelt V.03XYCOM XVME-977 FLOPPY DRIVE MODULE XVME977
XYCOM INDUSTRIAL COMPUTER OPERATOR INTERFACE 3512 KPM *DAMAGED TOGGLE*
02877 90016 TIMKEN New BearingsSiemens Simatic S5 Verbindungskabel 6XV1440-2KH32 6XV1 440-2KH32 Neu
GE Fanuc SERIES IC600CP600K IC600CP600 IC600CP600L
XYCOM 9485/3334-T/9485-2343316011000 OPERATOR INTERFACE ***XLNT***
TIMKEN JL724348 C PRECISION TAPERED BEARING CONE
Siemens Simatic S5 6ES5420-4UA13 6ES5-420-4UA13 V.01FANUC Connector Kit Beta CX20 CX23 A06B-6093-K314 NEW
NA82587 TIMKEN New Bearings
From Canada
From Singapore
1984W0 TIMKEN New Bearings
Xycom Remote Keyboard Model# 9000-FFK Part# 116061-001
XYCOM MASS STORAGE SUBSYSTEM XVME 957
Xycom VMEbus Counter Module XVME-203 70203-001
GE FANUC EE-4596-211-012 EE 4596 211 012 NEW