特價(jià)威格士液壓閥DG3VP 3 102A VM UD 10直動(dòng)式減壓閥 而我們知道,當(dāng)負(fù)載為零的時(shí)候,如果四通滑閥完全打開,p口壓力=t口壓力+閥口壓力損失(忽略油路上的其它壓力損失),如果閥口壓力損失很小,t口壓力又為零,那么p口的壓力就不足以供給前置級(jí)閥來(lái)推動(dòng)主閥芯,整個(gè)伺服閥就失效了。所以伺服閥的閥口做得偏小,即使在閥口全開的情況下,也要有一定的壓力損失,來(lái)維持前置級(jí)閥的正常工作。KATG4V-3-2B20N-Z-M-F-PD7-H7-61
KBDG4V-3-33C20N-M1PE7H71;
KBDG5V733C130N65XM1PE7H1
KBDG5V-7-33C130N65-XT-M2-PC7H14
KBDG5V-8-2C330N-T-M1-PE7-H1-10
KBDG5V-8-2C330N-T-M1-PE7-H1-10
KBDG5V-8-33C330N200-X-M1-PE7-H1-10
KBDG5V-8-33C330N200-X-M1-PE7-H1-10
KBFDG4V-3-2C20N-Z-PE7-H7-10
KBSDG4V-3-96L-05-PE7-H7-10
KCG-3-40D-Z-M-U-H1-10
KCG3L100DZMUH110
KCG3L100DZMUH110
KDG3V-8-2C280N-E-10
KDG3V-8-2C280N-E-10
KDG4V 5 33C20N Z M U H7 20
KDG4V3-33C20N-Z-M-U-H7-60
KDG4V-3-33C30X-VM-U-H7-60
KDG4V-5-33C30N-Z-MU-H7-3
KDG5V-7-33C170N-X-VM-U-H1-10
KFDG4V 5 33C50N Z M U1 H7 20
KFDG4V-3-2C20N-Z-M-U1-H7-20
KFDG4V-3-2C20N-Z-M-U1-H7-20
KFDG4V-5-2C70N-Z-M-U1-H7-20
KFDG4V-5-2C70N-Z-VM-U1-H7-20
KFDG4V-5-2C70N-Z-VM-U1-H7-20
KFDG4V-5-33C-50NZ M-U1M7
KFDG5V-7-2C200N-EX-VM-U1-H1-12-EN1
KFDG5V-7-2C200N-EX-VM-U1-H1-12-EN1
KHDG4V-3 02157451 21
KHDG4V-3 02157451 21
KHDG5V-5-33C80N-X-VMU1-H 2-20
KTG4V-3S-2B08N-M-U1-H5-60-EN427
KTG4V3S2B19NMUH560
DG3VP-3-103A-VM-U-H-10
DG4V-3-2A-M-U-D6-60
DG4V 3 0C M U H7 60
DG4V 3 2A M U H7 60
DG4V-3-22A-M-U-H7-60
DG4V 3 2AL M U H7 60
DG4V 3 2AL M U SA7 60
DG4V 3 2C M U H7 60
DG4V 3 6C M U H7 60
DG4V 3 6C VM U6 H7 60
DG4V-3-6C208-M-U-HH7-60
伺服閥其實(shí)缺點(diǎn)極多:能耗浪費(fèi)大、容易出故障、抗污染能力差、價(jià)格昂貴等等等等,好處只有一個(gè):動(dòng)態(tài)性能是所有液壓閥中*高的。就憑著這一個(gè)優(yōu)點(diǎn),在很多對(duì)動(dòng)態(tài)特性要求高的場(chǎng)合不得不使用伺服閥,如飛機(jī)火箭的舵機(jī)控制、汽輪機(jī)調(diào)速等等。動(dòng)態(tài)要求低一點(diǎn)的,基本上都是比例閥的天下了。DG3VP-3-103A-VM-U-H-10
DG3VP-3-103A-VM-U-H-10-EN4
DG3VP-3-102A-H-VM-U-H-10
DG3VP-3-102A-VM-U-B-10
DG3VP-3-102A-VM-U-D-10
DG3VP-3-102A-VM-U-G-10
DG3VP-3-102A-VM-U-H-10
DG3VP-3-102A-VM-U-P-10
DG3VP-3-103A-H-VM-U-H-10
DG3VP-3-103A-VM-KUP5-D3-H-10
DG3VP-3-103A-VM-U-B-10
DG3VP-3-103A-VM-U-D-10
DG3VP-3-103A-VM-U-DP-10
DG3VP-3-103A-VM-U-G-10
DG3VP-3-103A-VM-U-H-10
DG3VP-3-103A-VM-U-H-10-EN4
DG3VP-3-103A-VM-U-P-10
DG3VP-3-103A-VM-U-S-10
DG4S4-010B-U-B-60-S324
DG4S4-010B-U-H-60-S324
DG4S4-012C-U-B-60
產(chǎn)品說(shuō)明 樣本類型 PDF 樣本編號(hào)
手動(dòng), 氣動(dòng)或液控 - 規(guī)格 2 (NG 4)
SystemStak? 疊加閥, 規(guī)格 02, DG4V-02-10 設(shè)計(jì), DGMR1 D02, DGMPC, DGMX2, DGMFN, DGMDC, DGMC, 250 bar (3600 psi) 30 l/min (7.9 USgpm) ISO/DIS 4401-02-02 樣本 中文
English 5018/C/1197/A
5018/EN/1197/A
一般說(shuō)來(lái),好像伺服系統(tǒng)都是閉環(huán)控制,比例多用于開環(huán)控制;其次比例閥類型要多,有比例壓力、流量控制閥等,控制比伺服要靈活一些。從他們內(nèi)部結(jié)構(gòu)看,伺服閥多是零遮蓋,比例閥則有一定的死區(qū),控制精度要低,響應(yīng)要慢。但從發(fā)展趨勢(shì)看,特別在比例方向流量控制閥和伺服閥方面,兩者性能差別逐漸在縮小,另外比例閥的成本比伺服閥要低許多,抗污染能力也強(qiáng)!
RZGA-A-010/210/M 20
RZGA-A-010/32/M/7 20
RZGA-A-033/80/M/7 31
RZGO-A-010/100 20
RZGO-A-010/210 20
RZGO-A-033/100
RZGO-A-033/210
RZGO-A-033/315 31
RZGO-AE-010/100 10
RZGO-AE-033/210 10
RZGO-TER-010/100
RZGO-TER-010/100/I 40
RZGO-TER-010/210 40
RZGO-TER-010/210/I 40
RZGO-TER-010/32 40
RZGO-TER-033/100
RZGO-TER-033/315 40
DG4V 3S 2A HU H5 61
DG4V 3S 2AL MU H5 60
DG4V 3S 6C HU H5 60
DG4V 3S 6C MU H5
DG4V 3S ZO MU H5 60
FCG 03 28 22 S10
DG4S4-002A
DG4V-3-63-MUHT60
02-178049 AC240V
CG5V-6GM-DVM-U-H5-20
DG4V-3S-OB-VM-U-H5-60
DG4V-5-6CJ-MU-H6-20
DGMC2-5-AT-FW-BT-B-30
DGMC-5-AT-FW-B-30
DGMC-5-PT-AW-B-30
DGMPC-5-DABK-30
DGMX2-5-PP-AW-B-30
DGMX2-5-PP-FW-B-30
DHMC2-5-AT-FW-BT-FW-B-30
KBSDG4V-5-92L-25-PE7-H7-10
PCGV-8A-10
XCG2V-6CW-10
KBFDG4V-3-2C20N-Z-PH7-H7-10
02-160704
02-178049
071037 L4201
507826(220V)
507828(24V)
507834(220V)
DBW 10 B1-52200-6EW230N9K4
DGMC-5-PT-FW-B-30
RV10120-01X-0.5
TA064-12Y-M25
EE-04051-042
EEA-APM-525-A-32
VIPA VIPA 222-1BH10
DG4V-3-6C-M-U1-T-7 0805/12V
PVWS-360-M07R001R1SVV
PVXS-250-M-R-DF-0000-00
DG4V3S2AMFWB560
DG4V3S2NMFWB560
DGMFN3TA2WB2W41