力士乐比例换向阀0811404405
力士乐比例换向阀0811404405
产品简介:
阀对流量的控制可以分为两种:
一种是开关控制:要么全开、要么全关,流量要么最大、要么最小,没有中间状态,如普通的电磁直通阀、电磁换向阀、电液换向阀。
另一种是连续控制:阀口可以根据需要打开任意一个开度,由此控制通过流量的大小,这类阀有手动控制的,如节流阀,也有电控的,如比例阀、伺服阀。
力士乐液压部分系列型号:
R902449669 AL A7VO500LRDH2/63R-VPH02
R910994460 AL A7VLO250LRD/63L-PZB02
R902454400 AL A7VLO250LRD/63R-VZB01-SO9
R910968448 AL A7VLO250LRG/63L-PZB02-SO7
R910971583 AL A7VLO500HD1D/63L-PZH01-SO6
R910971448 AL A7VLO500HD3D/63L-PZH01-SO6
R910971664 AL A7VLO500LRD/63L-PZH02-SO55
R902413244 AL A7VLO500LRD/63L-VZH02-SO55
R902455740 AL A7VLO500LRD/63R-VZH01-SO42
R902455477 AL A7VLO500LRD/63R-VZH02-SO42
R910971725 AL A7VLO500LRG/63L-PZH02-SO11
力士乐REXROTH轴向柱塞变量泵A10VO 5X系列
R902437437 AA10VO85DFR/52R-PSC12N00
R902547867 AA10VO85DRF/53L-VUC12K07
R902432555 AA10VO5EK1/52R-VCX14N00
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R902485944 AA10VO18DR/53L-VSC12N00
R902548916 AA10VO18DR/53R-VSC12K01
R902548915 AA10VO18DR/53R-VSC12N00
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R902455866 AA10VO18DRS/5*UNGUEL***0'BASIC'
R902455864 AA10VO18DRS/5*UNGUEL***0'BASIC'
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R902409488 AA10VO28DFR/52L-PSC64N00-S1047
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R902438193 AA10VO28DFR/52R-PSC12K68
R910983082 AA10VO28DFR/52R-PSC12N00
R902435031 AA10VO28DFR/52R-PSC12N00E
R910976487 AA10VO28DFR/52R-PSC61N00
R902439223 AA10VO28DFR/52R-PSC62K01
R902401382 AA10VO28DFR/52R-PSC62K68
R910992465 AA10VO28DFR/52R-PSC62N00
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R910976769 AA10VO28DFR/52R-PSC64N00
R902500089 AA10VO28DFR/52R-PSC64N00-S1122
R902496363 AA10VO28DFR/52R-VSC12G40-S1047
R902545278 AA10VO28DFR/52R-VSC12K52
R902439351 AA10VO28DFR/52R-VSC12K68
R902403871 AA10VO28DFR/52R-VSC12N00
R902463198 AA10VO28DFR/52R-VSC12N00-S2436
R902443287 AA10VO28DFR/52R-VSC12N00-SO724
R902403838 AA10VO28DFR/52R-VSC62K01
R902450366 AA10VO28DFR/52R-VSC62K01E
R910998752 AA10VO28DFR/52R-VSC62K68-SO97
R902435967 AA10VO28DFR/52R-VSC62N00
R902506472 AA10VO28DFR/52R-VSC62N00-SO97
R902429247 AA10VO28DFR/52R-VSC64N00-SO97
R902425818 AA10VO28DFR/52W-VSC68N000-SO724
R910978966 AA10VO28DFR1/52L-PCC11N00
R902414008 AA10VO28DFR1/52L-PKC11N00
R902435068 AA10VO28DFR1/52L-PRC12K01
R902401496 AA10VO28DFR1/52L-PRC62K68
R910979320 AA10VO28DFR1/52L-PSC11N00
R902413034 AA10VO28DFR1/52L-PSC12G30
R902419639 AA10VO28DFR1/52L-PSC12N00
R902402115 AA10VO28DFR1/52L-PSC12N00-SO702
R902414919 AA10VO28DFR1/52L-PSC12N00-SO851
R902435335 AA10VO28DFR1/52L-PSC12N00E
R910986799 AA10VO28DFR1/52L-PSC61N00
R902406142 AA10VO28DFR1/52L-PSC62K01
R902415469 AA10VO28DFR1/52L-PSC62K01-SO239
R910992837 AA10VO28DFR1/52L-PSC62N00
R910987271 AA10VO28DFR1/52L-PSC64N00
R902453037 AA10VO28DFR1/52L-PTC12K68-S1543
R902412900 AA10VO28DFR1/52L-VCC64N00-S1245
R902419996 AA10VO28DFR1/52L-VCC64N00-S1420
R902425439 AA10VO28DFR1/52L-VCC64N00-S1562
R902431196 AA10VO28DFR1/52L-VCC64N00-S1745
R902432813 AA10VO28DFR1/52L-VCC64N00-S1774
R902443826 AA10VO28DFR1/52L-VCC64N00-S1967
R902496987 AA10VO28DFR1/52L-VRC12K68-SO547
R902473691 AA10VO28DFR1/52L-VSC12K01
R902418842 AA10VO28DFR1/52L-VSC12N00-S1405
R902443781 AA10VO28DFR1/52L-VSC12N00-S1968
R902425248 AA10VO28DFR1/52L-VSC64N00-SO97
R902410019 AA10VO28DFR1/52L-VSC73N00
R902426888 AA10VO28DFR1/52L-VSC73N00-S1608
R902439476 AA10VO28DFR1/52L-VSC73N00ESO736
R902443469 AA10VO28DFR1/52L-VUX64N00*UNGUEL***
R902438767 AA10VO28DFR1/52L-VWC11N00
R902431080 AA10VO28DFR1/52R-HRC40N00-S1005
R902446423 AA10VO28DFR1/52R-HTC40N00-S2020
R910978881 AA10VO28DFR1/52R-PCC61N00
R902427185 AA10VO28DFR1/52R-PRC12K68
R902430675 AA10VO28DFR1/52R-PRC12K68-SO724
R902401497 AA10VO28DFR1/52R-PRC62K68
R910993833 AA10VO28DFR1/52R-PSC11N00
R902403979 AA10VO28DFR1/52R-PSC11N00-SO736
R910996251 AA10VO28DFR1/52R-PSC12G40
R902420710 AA10VO28DFR1/52R-PSC12K01
R910979522 AA10VO28DFR1/52R-PSC12N00
R910978473 AA10VO28DFR1/52R-PSC61N00
R902425037 AA10VO28DFR1/52R-PSC62K01
R902414607 AA10VO28DFR1/52R-PSC62K01-SO239
R902448207 AA10VO28DFR1/52R-PSC62K01E
R902400303 AA10VO28DFR1/52R-PSC62N00
R902400401 AA10VO28DFR1/52R-PSC62N00-SO97
R910979350 AA10VO28DFR1/52R-PSC64N00
R902500120 AA10VO28DFR1/52R-PSC64N00-S1122
R902500169 AA10VO28DFR1/52R-PSC64N00-S1137
R902405721 AA10VO28DFR1/52R-PXC12N00
R902424469 AA10VO28DFR1/52R-VKC12N00-SO32
R902416052 AA10VO28DFR1/52R-VSC11N00
R902539734 AA10VO28DFR1/52R-VSC11N00-S4351
R902531450 AA10VO28DFR1/52R-VSC12G40-S4115
R902451291 AA10VO28DFR1/52R-VSC12K01
R902540902 AA10VO28DFR1/52R-VSC12K01*GO2EU*
R902494104 AA10VO28DFR1/52R-VSC12K52
R902449885 AA10VO28DFR1/52R-VSC12N00
R902416950 AA10VO28DFR1/52R-VSC12N00-SO547
R902545779 AA10VO28DFR1/52R-VSC12N00-SO547
R902450189 AA10VO28DFR1/52R-VSC12N00E
R902407882 AA10VO28DFR1/52R-VSC61N00
R902501030 AA10VO28DFR1/52R-VSC62K68
R902451198 AA10VO28DFR1/52R-VSC62N00
R910997724 AA10VO28DFR1/52R-VSC64N00
R902400277 AA10VO28DFR1/52R-VSC64N00-SO97
R902451614 AA10VO28DFR1/52R-VXC11N00-S2130
R902443468 AA10VO28DFR1/52R-VXX64N00*UNGUEL***
R902431718 AA10VO28DFR1/52W-PSC68N000
R902414989 AA10VO28DFR1/52W-VSC68N000
R902413620 AA10VO28DFR1/52W-VSC68N000-S1047
R902439912 AA10VO28DFR5/52R-PSC11N00-SO736
R902410954 AA10VO28DR/5*UNGUEL***0-S1126
R902500359 AA10VO28DR/52L-PKC62N00
R910996560 AA10VO28DR/52L-PKC62N00-SO97
R902401498 AA10VO28DR/52L-PRC62K68
R910983088 AA10VO28DR/52L-PSC12N00
R902401499 AA10VO28DR/52L-PSC61N00
R902428898 AA10VO28DR/52L-PSC62K01
R902449785 AA10VO28DR/52L-PSC62K01E
R902426043 AA10VO28DR/52L-PSC62N00
R902401236 AA10VO28DR/52L-PSC62N00-S1048
R902500128 AA10VO28DR/52L-PSC62N00-SO97
R910993045 AA10VO28DR/52L-PSC64N00
R902451179 AA10VO28DR/52L-VSC12K01
R902453170 AA10VO28DR/52L-VSC62K68
R902433274 AA10VO28DR/52L-VSC62N00
R902403115 AA10VO28DR/52L-VSC64N00
R902404873 AA10VO28DR/52R-PPC11N00
R902406028 AA10VO28DR/52R-PRC62K68
R910992791 AA10VO28DR/52R-PSC12N00
R902433531 AA10VO28DR/52R-PSC12N00E
R910984372 AA10VO28DR/52R-PSC61N00
R902500315 AA10VO28DR/52R-PSC62K68
R902401461 AA10VO28DR/52R-PSC62N00
R910983084 AA10VO28DR/52R-PSC64N00
R902403149 AA10VO28DR/52R-PSC64N00-SO97
R910998393 AA10VO28DR/52R-VSC11N00
R902451050 AA10VO28DR/52R-VSC12K01
R902450683 AA10VO28DR/52R-VSC12N00
R902449189 AA10VO28DR/52R-VSC12N00-S2069
R910983842 AA10VO28DR/52R-VSC61N00
R902401369 AA10VO28DR/52R-VSC61N00-SO97
R902401451 AA10VO28DR/52R-VSC62N00
R902455276 AA10VO28DR/52R-VSC62N00-SO97
R902436640 AA10VO28DR/52W-VSC68N000-S1863
R902437299 AA10VO28DR/52W-VSC68N000-S1885
R902500194 AA10VO28DR1/52L-PSC64N00
R902500193 AA10VO28DR1/52R-PSC64N00
R902450700 AA10VO28DRG/5*UNGUEL***0-S2110
R902431806 AA10VO28DRG/52L-PRC12L55
R902406000 AA10VO28DRG/52L-PRC62K68
R902420978 AA10VO28DRG/52L-PSC12G44
R910995704 AA10VO28DRG/52L-PSC12N00-SO97
R902402509 AA10VO28DRG/52L-PSC61N00
R902406001 AA10VO28DRG/52L-PSC62N00
R902500327 AA10VO28DRG/52L-PSC64N00
R902500218 AA10VO28DRG/52L-PSC64N00-SO97
R902414060 AA10VO28DRG/52L-VCC64N00-S1273
R902415822 AA10VO28DRG/52L-VCC64N00-S1317
R910997537 AA10VO28DRG/52L-VSC11N00
R902453960 AA10VO28DRG/52L-VSC11N00-S2215
R910979733 AA10VO28DRG/52L-VSC12N00
R910995561 AA10VO28DRG/52L-VSC12N00-SO702
R902448020 AA10VO28DRG/52L-VSC61N00
R902422430 AA10VO28DRG/52L-VSC64N00
R902422862 AA10VO28DRG/52L-VSC64N00-SO97
R910986134 AA10VO28DRG/52R-PCC61N00
R902417147 AA10VO28DRG/52R-PRC12K68
R902406002 AA10VO28DRG/52R-PRC62K68
R902427756 AA10VO28DRG/52R-PSC11N00
R902409716 AA10VO28DRG/52R-PSC12H00-S1180
R902405564 AA10VO28DRG/52R-PSC12K68
R902416949 AA10VO28DRG/52R-PSC12N00
R902431945 AA10VO28DRG/52R-PSC12N00-SO702
R910976584 AA10VO28DRG/52R-PSC61N00
R902401279 AA10VO28DRG/52R-PSC62K68
R902406003 AA10VO28DRG/52R-PSC62N00
R910976766 AA10VO28DRG/52R-PSC64N00
R902412682 AA10VO28DRG/52R-PSC64N00-SO97
R902415379 AA10VO28DRG/52R-VSC11N00
R902424371 AA10VO28DRG/52R-VSC12K01
R902406127 AA10VO28DRG/52R-VSC61N00
R902438991 AA10VO28DRG/52R-VSC62K01-SO97
R902506442 AA10VO28DRG/52R-VSC62K01-SO97
所以使用比例阀或伺服阀的目的就是:以电控方式实现对流量的节流控制(当然经过结构上的改动也可实现压力控制等),既然是节流控制,就必然有能量损失,伺服阀和其它阀不同的是,它的能量损失更大一些,因为它需要一定的流量来维持前置级控制油路的工作。
基本信息
中文名称
比例阀
外文名称
Proportional valve
作用
控制油液的流量和方向
结构
滑阀
目录
1滑阀结构
2区别
3延伸资料
滑阀结构
伺服阀的主阀一般来说和换向阀一样是滑阀结构,只不过阀芯的换向不是靠电磁铁来推动,而是靠前置级阀输出的液压力来推动,这一点和电液换向阀比较相似,只不过电液换向阀的前置级阀是电磁换向阀,而伺服阀的前置级阀是动态特性比较好的喷嘴挡板阀或射流管阀。
也就是说,伺服阀的主阀是靠前置级阀的输出压力来控制的,而前置级阀的压力则来自于伺服阀的入口p,假如p口的压力不足,前置级阀就不能输出足够的压力来推动主阀芯动作。
而我们知道,当负载为零的时候,如果四通滑阀完全打开,p口压力=t口压力+阀口压力损失(忽略油路上的其它压力损失),如果阀口压力损失很小,t口压力又为零,那么p口的压力就不足以供给前置级阀来推动主阀芯,整个伺服阀就失效了。所以伺服阀的阀口做得偏小,即使在阀口全开的情况下,也要有一定的压力损失,来维持前置级阀的正常工作。
伺服阀其实缺点极多:能耗浪费大、容易出故障、抗污染能力差、价格昂贵等等等等,好处只有一个:动态性能是所有液压阀中最高的。就凭着这一个优点,在很多对动态特性要求高的场合不得不使用伺服阀,如飞机火箭的舵机控制、汽轮机调速等等。动态要求低一点的,基本上都是比例阀的天下了。
一般说来,好像伺服系统都是闭环控制,比例阀多用于开环控制;其次比例阀类型要多,有比例压力、流量控制阀等,控制比伺服要灵活一些。从他们内部结构看,伺服阀多是零遮盖,比例阀则有一定的死区,控制精度要低,响应要慢。但从发展趋势看,特别在比例方向流量控制阀和伺服阀方面,两者性能差别逐渐在缩小,另外比例阀的成本比伺服阀要低许多,抗污染能力也强!
区别
伺服阀与比例阀的区别
伺服阀与比例阀之间的差别并没有严格的规定,因为比例阀的性能越来越好,逐渐向伺服阀靠近,所以近些年出现了比例伺服阀。
比例阀和伺服阀的区别主要体现在以下几点:
1.驱动装置不同。比例阀的驱动装置是比例电磁铁;伺服阀的驱动装置是力马达或力矩马达;
2.性能参数不同。滞环、中位死区、频宽、过滤精度等特性不同,因此应用场合不同,伺服阀和伺服比例阀主要应用在闭环控制系统,其它结构的比例阀主要应用在开环控系统及闭环速度控制系统;
2.1 伺服阀中位没有死区,比例阀有中位死区;
2.2 伺服阀的频响(响应频率)更高,可以高达200Hz左右,比例阀一般最高几十Hz;
2.3 伺服阀对液压油液的要求更高,需要经过滤才行,否则容易堵塞,比例阀要求低一些;
3.阀芯结构及加工精度不同。比例阀采用阀芯+阀体结构,阀体兼作阀套。伺服阀和伺服比例阀采用阀芯+阀套的结构。
4.中位机能种类不同。比例换向阀具有与普通换向阀相似的中位机能,而伺服阀中位机能只有O型(Rexroth产品的E型)。
5.阀的额定压降不同。
而比例伺服阀性能介于伺服阀和比例阀之间。
比例换向阀属于比例阀的一种,用来控制流量和流向。
延伸资料
---电气比例阀
自动控制可分成断续控制和连续控制。断续控制即开关控制。气动控制系统中使用动作频率较低的开关式(ON-OFF)的换向阀来控制气路的通断。靠减压阀来调节所需要的压力,靠节流阀来调节所需要的流量。这种传统的气动控制系统要想要有多个输出力和多个运动速度,就需要多个减压阀、节流阀及换向阀。这样,不仅元件需要多,成本高,构成系统复杂,且许多元件都需要预先进行人工调节。电气比例阀控制属于连续控制,其特点是输出量随输入量的变化而变化,输出量与输入量之间存在一定的比例关系。比例控制有开环控制和闭环控制之分。
结构原理
输入信号增大,供气用电磁阀先导阀1换向,而排气用电磁先导阀7处于复位状态,则供气压力从SUP口通过阀1进入先导室5,先导室压力上升,气压力作用在膜片2的上方,则和膜片2相连的供气阀芯4便开启,排气阀芯3关闭,产生输出压力。此输出压力通过压力传感器6反馈至控制回路8。在这里,与目标值进行快速比较修正,知道输出压力与输入信号成一定比例为止,从而得到输出压力与输入信号的变化成比例的变化。由于没有喷嘴挡板机构,故阀对杂质不敏感,可靠性高。
特点
1)可实现压力、速度的无极调节,避免了常通的开关式气阀换向时的冲击现象。
2)能实现远程控制和程序控制。
3)与断续控制相比,系统简化,元件大大减少。
4)与液压比例阀相比,体积小、重量轻、结构简单、成本较低,但响应速度比液压系统慢得多,对负载变化也比较敏感。
5)使用功率小、发热少、噪声低。
6)不会发生火灾,不污染环境。受温度变化的影响小。
公司简介:
武汉百士自动化设备有限公司位于武汉洪山区,是一家从事经营自动化仪表备件、液压泵阀的贸易型公司;专注于中国工业传动自动化流体领域。主营产品数控模块、伺服电机、可编程控制器、传感器、气动元件、工业仪器仪表、电磁阀、柱塞泵、液压元件等。经营品牌有:贝加莱B&R、西门子Siemens、本特利bently、爱尔泰克Airtec气动、安沃驰Aventics、博世力士乐rexroth、阿托斯ATOS、迪普马DUPLOMATIC、Parker派克、伊顿EATON VICKERS等品牌。
公司本着创业人为本、发展靠科技、管理出效益、服务至上的理念。为广大的顾客价值 ,为企业效益 ,为员工机遇的发展方向 。我们的理念是让的企业成为我们的客户,让我们的客户成为的企业。公司提供销售服务,同时还建立了完善的售后服务体系,为企业发展中遇到的问题和困难提供指导帮助。我们相信,通过我们的不断努力和追求,能够实现与中小企业的互利共赢!
我们热诚欢迎各界朋友来电咨询、洽谈业务。
产品报价及货期说明 因工业液压、自动化各进口品牌备件型号繁多,欧美产品价格货期实时变化,因此很难实时标出准确价格,故具体产品信息、报价及货期请以我公司报价单为准 ,给您带来不便敬请谅解!以上信息由武汉百士公布,最终解释权归武汉百士自动化设备有限公司所有。感谢您的合作,竭诚为您服务。