BURKERT0255型直動式電磁閥*寶德總經銷
BURKERT0255型直動式柱塞電磁閥的流量特性是指介質通過閥門的相對流量與相對開度之間的關系。但流量的大小不僅取決于閥的開度,還與閥前后的差壓有關。當一臺控制閥(調節閥)接在管路中工作時,閥門開度一定,隨著流量的變化,閥門前后的差壓是變化的,于是理想特性就變成了工作特性。常用的流量特性有線性、等百分比和快開型3種。快開特性的閥主要用于雙位控制和程序控制,因此流量特性的選擇主要是指合理選用線性和等百分比流量特性。選擇的原則是在負荷變化的情況下,結合工藝配管情況,使控制系統總的放大系數即綜合特性近似于線性。
BURKERT0255型直動式柱塞電磁閥與管道串聯時,因調節閥開度的變化會引起流量的變化,由流體力學理論可知,管道的阻力損失與流量成平方關系。調節閥一旦動作,流量則改變,系統阻力也相應改變,因此調節閥壓降也相應變化。串聯管道時的工作流量特性與壓降分配比有關。閥上壓降越小,調節閥全開流量相應減小,使理想的直線特性畸變為快開特性,理想的等百分比特性畸變為直線特性。在實際使用中,當調節閥選得過大或生產處于非滿負荷狀態時,調節閥則工作在小開度,有時為了使調節閥有一定的開度,而將閥門開度調小以增加管道阻力,使流過調節閥的流量降低,實際上就是使壓降分配比值下降,使流量特性畸變,惡化了調節質量。
BURKERT0255型直動式電磁閥*寶德總經銷
BURKERT 134317M G1/2 0.2-16bar 24VDC 8W BURKERT 126155
BURKERT 420685S BURKERT 420685 BURKERT 120659 BURKERT 125370
BURKERT 560 BURKERT 001132k BURKERT 001592R BURKERT 001593J
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BURKERT 141266 BURKERT 8025 BURKERT 8025+8030 G1/2
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BURKERT 791B024DWD1SN00 BURKERT OGR8G-1(9-36V)
BURKERT VNS022 18KK EARH9P1.9P1 BURKERT 283 BURKERT 318
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BURKERT 141199 BURKERT 141266 BURKERT 628006 BURKERT 126260
BURKERT 6014.C 1.5 24VAC 50/60HZ BURKERT 170720 BURKERT 8組/快629505B
BURKERT 17018 BURKERT 17427 BURKERT 125660 BURKERT TB5211-D-G
BURKERT 701516 BURKERT 134076 BURKERT AV2650-FL BURKERT 502539
BURKERT 144293 BURKERT 65395 BURKERT 6213A
BURKERT 125724 W27LG AC24V BURKERT 2511 DC24V BURKERT 1138
BURKERT 48606 BURKERT 141482 BURKERT 149295 BURKERT 00001399DN32PN25
BURKERT 00001401DN50PN25 BURKERT 134317 BURKERT 132652 BURKERT 134329
BURKERT BATCH:SE35/8035 115-230VAC BURKERT 502539 BURKERT 141266
BURKERT 密封圈 BURKERT RQ941F-16 DN125 BURKERT RQ941F-16 DN40
BURKERT RQ941F-16 DN50 BURKERT RQ941F-16 DN65 BURKERT RQ941F-16 DN80
BURKERT 5413 BURKERT 6519 BURKERT 133765 BURKERT 134344
BURKERT 631300 A20 BURKERT 631300 A25 BURKERT 615157 BURKERT 69006
BURKERT 0331-C-4 ONBR-MS BURKERT 500987S DC24V BURKERT 17023
BURKERT 130Q 0.2-16BAR G3/4 BURKERT 60644 BURKERT 134317
BURKERT 2030EAPV D25 00436475 W4XLE S/N 2050 00434871 W46LT S/N 1880
BURKERT 0281A13 BURKERT 346-C-40.0-B-RG 24V 11W G1 1/2 BURKERT 6213A2010
BURKERT 61303 BURKERT SIDE CONTROL 1067 BURKERT 429121R BURKERT 167634
BURKERT 0475H 8.0PB C1/4 (訂貨號131398 BURKERT 589933 BURKERT 001251A
BURKERT 134317 BURKERT 429102 BURKERT 1249 BURKERT 1250 BURKERT 1251
BURKERT 6213 G3/4 DC24 DN20 BURKERT 642140M BURKERT 134324
BURKERT 021563G06 BURKERT 60621 BURKERT 001136P BURKERT 001446W
BURKERT 17427 BURKERT 134601 BURKERT 501215 BURKERT CN00005
BURKERT 420661 BURKERT 621300 BURKERT 134430 BURKERT 134438