R900703811 VT-DFP-A-2X/G24KO/0/V
專營(yíng)銷售力士樂(lè)液壓元件: 柱塞泵A10VSO、電磁閥4WE、電磁閥3WE、溢流閥DBW、DBDS、DB、3DR、節(jié)流閥Z2S、Z2F、葉片泵PV7、PVV、齒輪泵PH2,PH4,PGF、HM20/HM17壓力傳感器、壓力繼電器HED、博世放大器、放大板 、閥0811、0820 、齒輪泵0510、減壓閥DR、ZDR、4WREE,馬達(dá)伺服驅(qū)動(dòng) 電機(jī)等系列*現(xiàn)貨優(yōu)勢(shì)供應(yīng)

閥對(duì)流量的控制可以分為兩種：
一種是開(kāi)關(guān)控制：要么全開(kāi)、要么全關(guān)，流量要么zui大、要么zui小，沒(méi)有中間狀態(tài)，如普通的電磁直通閥、電磁換向閥、電液換向閥。
另一種是連續(xù)控制：閥口可以根據(jù)需要打開(kāi)任意一個(gè)開(kāi)度，由此控制通過(guò)流量的大小，這類閥有手動(dòng)控制的，如節(jié)流閥，也有電控的，如比例閥、伺服閥。

VT-DFP-A-2X/G24KO/0/V    VT-DFP-A-2X/G24KO/0/V     VT-DFP-A-2X/G24KO/0/V
VT-DFP-A-2X/G24KO/0/V    VT-DFP-A-2X/G24KO/0/V     VT-DFP-A-2X/G24KO/0/V

所以使用比例閥或伺服閥的目的就是：以電控方式實(shí)現(xiàn)對(duì)流量的節(jié)流控制（當(dāng)然經(jīng)過(guò)結(jié)構(gòu)上的改動(dòng)也可實(shí)現(xiàn)壓力控制等），既然是節(jié)流控制，就必然有能量損失，伺服閥和其它閥不同的是，它的能量損失更大一些，因?yàn)樗枰欢ǖ牧髁縼?lái)維持前置級(jí)控制油路的工作。

武漢億嘉隆機(jī)電設(shè)備有限公司

傳真
袁榮    劉菲    
752455694

AA10VSO45DFR1/31R-PPA12N00(R910908725)
AA10VSO71DFR1/31R-PPA12N00(R910944440)
AA10VSO100DFR1/31R-PPA12N00(R910922744)
VT17370-1X/(R900786020)
PVV2-1X/068RA15DMB(R900935466)
FD16FB2X/300B03V(R900504003)   
2FRM16-3X/100L(R900424905)
4WREE6W08-2X/G24K31/A1V(R900923000)
4WREE6W32-2X/G24K31/A1V(R900911004)
4WREE6E08-2X/G24K31/A1V(R900912156)
4WREE6E16-2X/G24K31/A1V(R900920567)
4WREE6E32-2X/G24K31/A1V(R900907114)
4WRTE25E220L-4X/6EG24K31/A1M(R900954281)
DR30-5-5X/100YM(R900597260)
DBDS30P1X/50(R900423716)
伺服閥的主閥一般來(lái)說(shuō)和換向閥一樣是滑閥結(jié)構(gòu)，只不過(guò)閥芯的換向不是靠電磁鐵來(lái)推動(dòng)，而是靠前置級(jí)閥輸出的液壓力來(lái)推動(dòng)，這一點(diǎn)和電液換向閥比較相似，只不過(guò)電液換向閥的前置級(jí)閥是電磁換向閥，而伺服閥的前置級(jí)閥是動(dòng)態(tài)特性比較好的噴嘴擋板閥或射流管閥。
VT-VRPD-2-2X/V0/0-0-1(R901066987)
4WRE10E75-2X/G24K4/V(R900954102)
DBW10A2-5X/200-6EG24N9K4(R900926249)
DBW10A2-5X/315-6EG24N9K4(R900926054)
DBW20A2-5X/200-6EG24N9K4(R900939204)
DBW20A2-5X/315-6EG24N9K4(R900921754)
Z2S6-1-6X/(R900347495)
Z2S10-1-3X/(R900407394)
Z2S22-1-5X/(R900432915)
Z2FS6-2-4X/2QV(R900481624)
Z2FS10-5-3X/V(R900517812)
AA10VSO10DR/52R-PPA14N00(R910990406)
AA10VSO18DFR1/31R-PPA12N00(R910945178)
AA10VSO28DFR1/31R-PPA12N00(R910910590)
PV7-1X/10-14RE01MC0-16(R900580381)
PV7-1X/10-20RE01MC0-10(R900534143)
PV7-1X/16-20RE01MC0-16(R900580382)
4WRAP6W7-04-2X/24K4/M(R900581366)
4WRAP6W7-02-2X/24K4/M(R900581365)
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zui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。
R901077004 4WRTE35E1-1000L-4X/6EG24K31/A1M
R900033823 VT-VSPA1-1-1X
R900955887 3DREP6C-2X/25EG24N9K4/M
R910920752 AEA10VSO100DFR1/31R-PPA12N00
R910999927 AEA4VSO180DR/30R-PPB13N00
R900915814 2FRE16-43/160LBK4M
R900703811 VT-DFP-A-2X/G24KO/0/V
R901088911 PR4-3X/8,00-500RA01M01
R900424288 DBDS30K1X/315
R900424286 DBDS30K1X/200
HMS02.1N-W0028N-07-NNNN
HDS03.2-W100N-HSI2-01-FW
0811404832 4WRBA10E64-2X/G24N9Z4/M
R900912703 LFA32E-7X/CA40DQMG24F
R901277267 4WRZM16W6-150-1X/6EG24N9ETK4/D3M
4WREE10E75-2X/G24K31/F1V(R900927356)
4WREE10W75-2X/G24K31/F1V(R900948360)
R480060815
DBEM10-7X/315YG24K4M(R901335399)
Z4WE10X250-1X/CG24N9K4(R901291612)
A10VSO100DFR1/32R-VSB12N00-S1439(R902450324)
HCS02.1E-W0070-A-03-NNNN  R911298372
3DREPE6C-2X/25EG24N9K31/A1M R900958788
3DREPE6C-2X/25EG24N9K31/F1M R900958848
3DREPE6C-2X/25EG24N9K31/A1V R900925484
0811404603,4WRPH6C3B40L-2X/G24K0/A1M
伺服閥與比例閥的區(qū)別
伺服閥與比例閥之間的差別并沒(méi)有嚴(yán)格的規(guī)定，因?yàn)楸壤y的性能越來(lái)越好，逐漸向伺服閥靠近，所以近些年出現(xiàn)了比例伺服閥。
比例閥和伺服閥的區(qū)別主要體現(xiàn)在以下幾點(diǎn)：
1.驅(qū)動(dòng)裝置不同。比例閥的驅(qū)動(dòng)裝置是比例電磁鐵；伺服閥的驅(qū)動(dòng)裝置是力馬達(dá)或力矩馬達(dá)；
2.性能參數(shù)不同。滯環(huán)、中位死區(qū)、頻寬、過(guò)濾精度等特性不同，因此應(yīng)用場(chǎng)合不同，伺服閥和伺服比例閥主要應(yīng)用在閉環(huán)控制系統(tǒng)，其它結(jié)構(gòu)的比例閥主要應(yīng)用在開(kāi)環(huán)控系統(tǒng)及閉環(huán)速度控制系統(tǒng)；
AA10VSO140DFR1/31R-VPB12N00(R910945253)
AA4VSO355LR2G/30R-PPB13N00(R902411516)
R900772317 4WS2EM10-5X/60B11T315K31CV-114
DBEM10-7X/50YG24K4M(R901335405)
DBEM10-7X/100YG24K4M(R901335402)
DBEM10-7X/200YG24K4M(R901335400)
4WREE10E75-2X/G24K31/A1V(R900927230)
3DR10P5-6X/200Y/00M(R900916660)
4WRPEH6C4B40L-2X/G24K0/A1M(0811404613)
DREM10-6X/200YG24K4M(R901277137)
4WRZE25W8-220-7X/6EG24N9ETK31/F1D3M(R900746375)
AA4VSO180DFE1/30R-PPB13N00(R902430589)
3FREZ6B-1X/35L2G24-27Z4MM(0811403114)
VT-VRPA1-527-10/V0/QV(0811405098)
DREBE6X-1X/75MG24K31F1M(R901084277)
4WRPNH6C3B04L-2X/M/24PF6G(0811403559)
VT-VPCD-1-1X/V0/1-P-1(R901089559)
VT-HACF-1X/03,0/HACD&(R900776897)
0532004204
ZDBT-XP8-1X/315(0811104111)
LR32DB10E1X/(1818509231)
LR25F40E1X/(1818509296)
4WRL16V200M-3X/G24Z4/M(0811404207)
4WREE6W16-2X/G24K31/A1V(R900925657)
4WREE10W75-2X/G24K31/A1V(R900927233)
AA10VSO45DFR1/31R-PPA12N00(R910908725)
PGH5-3X/125RE11VU2(R901147118)
H-4WMM16J7X/F(R900927809)
Z2FS16-8-3X/S2(R900457256)
Z2FS22-8-3X/S2(R900443176)
AZPF-11-008RCB20MB(0510425009)
AZPF-11-011RCB20MB(0510525009)
SCA16BZ2X/M(R900425666)
ZDC16P-2X/M(R900489668)
ZDC25P-2X/M(R900344369)
4WRPEH6C3B40L-2X/G24K0/F1M(0811404634)
4WRPEH6C4B40L-2X/G24K0/F1M(0811404353)
AA4VSO71DR/10R-PPB13N00
AA4VSO125DR/30R-PPB13N00
AA4VSO180DR/30R-PPB13N00
AA4VSO250DR/30R-PPB13N00
AA10VSO45DR/31R-PPA12N00
AA10VSO71DR/31R-PPA12N00
AA10VSO100DR/31R-PPA12N00
AA10VSO140DR/31R-PPB12N00
AA10VSO71DRS/32R-VPB22U99
AA10VSO100DRS/32R-VPB12N00
AA10VSO140DRS/32R-VPB12N00
R900052392,M-3SED6CK1X/350CG24N9K4
R900052621,M-3SED6UK1X/350CG24N9K4
R900566273,M-3SEW6C3X/420MG24N9K4
R900566283,M-3SEW6U3X/420MG24N9K4
M-3SED10UK1X/350CG24N9K4(R900051053)
M-3SED10CK1X/350CG24N9K4(R900086685)
4WREE6V1-32-2X/G24K31/A1V(R900914841)
4WREE6E08-2X/G24K31/A1V-655(R900950341)
4WREE6E16-2X/G24K31/A1V-655(R900950342)
4WREE6E32-2X/G24K31/A1V-655(R900962181)
4WRAE6E30-2X/G24K31/A1V(R900954071)