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DBDS10P18/315 10通径板式安装溢流阀 德国博世力士乐REXROTH溢流阀 电磁溢流阀

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DBDS10P18/315 10通径板式安装溢流阀

溢流阀的性能指标

（1）溢流阀静态调压偏差 阀的调定压力与开启压力之差称为静态调压偏差。溢流流量对系统压力的影响一般在2~4kgf/cm2左右。调压偏差越大，系统的压力波动也越大。

（2）溢流阀压力振摆它是溢流阀在系统较大额定流量和较大压力下工作时，所控制的压力变动。一般应在±1~±3kgf/cm2左右。

（3）溢流阀卸载压力当系统的全部流量从溢流阀卸荷时，阀的压力损失为卸载压力，卸载压力越小越好。

（4）溢流阀动态指标溢流阀调整好以后，从开始工作到稳定工作一段的很短的过渡时间内，被控制的油压首先以衰减振荡的形式围绕所调定的工作压力值上下波动，然后才变为稳压溢流状态，当工作机构受冲击载荷而系统压力突然升高时，会出现压力峰值。峰值压力与调定压力的差值称为压力超调量。超调量与调定压力之比称为超调值。超调值越小越好，高压溢流阀超调值一般小于20%，中、低压溢流阀一般小于50%，另外，它的振摆次数和过渡过程时间也愈小愈好。

溢流阀的压力等级要与系统所需要的压力相适应，以确保较好的分辨率。 系统需要调节的较高压力是180bar，则溢流阀的压力等级应该是210左右 .不应该是315bar等太高的等级。原则是尽量使溢流阀的较高控制压力略大于系统所需要的较高压力。

DBDS10P18/315 10通径板式安装溢流阀

DB 型压力阀是一种先导式溢流阀。用于限制工作压力。

这些溢流阀 (DB) 主要由带主阀心 (3) 的主阀 (1) 以及带压力调节元件的先导控制阀 (2) 组成。

施加在通道 P 中的压力作用于主阀芯 (3)。同时，该压力通过配有喷嘴 (4) 和 (5) 的控制油路 (6) 和 (7) 施加于主阀芯 (3) 的弹簧负载侧和先导控制阀 (2) 中的滚珠 (8)。如果通道 P 中的压力超过弹簧 (9) 上设定的值，则滚珠 (8) 将背向弹簧 (9) 打开。相应的信号通过控制油路 (10) 和 (6) 从通道 P 由内部传出。此时主阀芯 (3) 弹簧负载侧的液压油通过控制油路 (7)、喷嘴孔 (11) 和滚珠 (8) 流入弹簧腔 (12)。从此处，液压油通过控制油路 (13) 从内部流入油箱（对于型号 DB …），或通过控制油路 (14) 从外部流入油箱（对于型号 DB …Y）。喷嘴 (4) 和 (5) 会导致主阀芯 (3) 出现压降，从而使通道 P 到通道 T 的连接打开。现在，液压油从通道 P 流到通道 T，同时维持设定的工作压力。

溢流阀可通过油口“X”(15) 卸载或切换为另一压力（第二个压力等级）。

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博世力士乐REXROTH溢流阀DBDS10P18/315在液压传动系统中,控制油液压力高低的液压阀称之为压力控制阀，简称压力阀。这类阀的共同点是利用作用在阀芯上的液压力和弹簧力相平衡的原理工作的。

一、溢流阀的基本结构及其工作原理

溢流阀的主要作用是对液压系统定压或进行安全保护。

（一）溢流阀的作用和性能要求

1．溢流阀的作用

在液压系统中用来维持定压是溢流阀的主要用途。它常用于节流调速系统中，和流量控制阀配合使用，调节进入系统的流量，并保持系统的压力基本恒定。用于过载保护的溢流阀一般称为安全阀。

2．液压系统对溢流阀的性能要求

（1）定压精度高 

（2）灵敏度要高

（3）工作要平稳且无振动和噪声

（4）当阀关闭时密封要好，泄漏要小。

（二）溢流阀的结构和工作原理

常用的溢流阀按其结构形式和基本动作方式可归结为直动式和先导式两种。

1.直动式溢流阀

直动式溢流阀是依靠系统中的压力油直接作用在阀芯上与弹簧力等相平衡，以控制阀芯的启闭动作，溢流阀是利用被控压力作为信号来改变弹簧的压缩量，从而改变阀口的通流面积和系统的溢流量来达到定压目的的。当系统压力升高时,阀芯上升,阀口通流面积增加,溢流量加大，进而使系统压力下降。溢流阀内部通过阀芯的平衡和运动构成的这种负反馈作用是其定压作用的基本原理，也是所有定压阀的基本工作原理。

2.先导式溢流阀

图-19所示为先导式溢流阀的结构示意图，由于先导阀芯一般为锥阀，受压面积较小，所以用一个刚度不太大的弹簧即可调整较高的开启压力，用螺钉调节导阀弹簧的预紧力，就可调节溢流阀的溢流阀压力。

先导式溢流阀有一个远程控制口Ｋ，如果将K口用油管接到另一个远程调压阀（远程调压阀的结构和溢流阀的先导控制部分一样），调节远程调压阀的弹簧力，即可调节溢流阀主阀芯上端的液压力，从而对溢流阀的溢流压力实现远程调压。但是，远程调压阀所能调节的较高压力不得超过溢流阀本身导阀的调整压力。当远程控制口K通过二位二通阀接通油箱时，主阀芯上端的压力接近于零，主阀芯上移到较高位置．阀口开得很大。由于主阀弹簧较软，这时溢流阀ｐ口处压力很低,系统的油在低压下通过溢流阀流回油箱，实现卸荷。

（三）溢流阀的性能 

溢流阀的性能包括溢流阀的静态性能和动态性能。

1.静态性能

(1)压力调节范围

压力调节范围是指调压弹簧在规定的范围内调节时，系统压力能平稳地上升或下降，且压力无突跳及迟滞现象时的较大和较小调定压力。溢流阀的较大允许流量为其额定流量，在额定流量下工作时溢流阀应无噪声、溢流阀的较小稳定流量取决于它的压力平稳性要求，一般规定为额定流量的15％。

(2)启闭特性

启闭特性是指溢流阀在稳态情况下从开启后到闭合的过程中，被控压力与通过溢流阀的溢流量之间的关系。它是衡量溢流阀定压精度的一个重要指标，一般用溢流阀处于额定流量、调定压力ｐs时，开始溢流的开启压力ｐk及停止溢流的闭合压力ｐB分别与ｐs的百分比来衡量，前者称为开启比，后者称为闭合比。

（3）卸荷压力

当溢流阀的远程控制口及与油箱相连时,额定流量下的压力损失称为卸荷压力。

REXROTH(博世-力士乐)液压元件：

REXROTH柱塞泵A10VSO、REXROTH换向阀阀4WE、REXROTH溢流阀DBW、

REXROTH节流阀Z2S、REXROTH叶片泵PV7、REXROTH压力继电器HED、

BOSCH博世放大器比例阀0811、BOSCH齿轮泵0510等系列大量现货特价供应专业代理经销德国BOSCH REXROTH(博世-力士乐)液压元件：

REXROTH柱塞泵A10VSO、REXROTH换向阀阀4WE、REXROTH溢流阀DBW、

REXROTH节流阀Z2S、REXROTH叶片泵PV7、REXROTH压力继电器HED、

BOSCH博世放大器比例阀0811、BOSCH齿轮泵0510等系列大量现货特价供应R901032480 ZDB10VA7-4X/315V

R900639923 GEHAEUSEZDB6VP.-41/

R900639922 GEHAEUSEZDB6VB.-41/

R900639921 GEHAEUSEZDB6VA.-41/

R900618471 ZDBE6VP4-1X/100G24K4M

R900598663 ZDB6VA3-4X/50V

R900598455 ZDB6VP1-4X/315V

R900598152 ZDB6VB1-4X/100V

R900597389 ZDB6VP7-4X/315V

R900596905 ZDB10VP1-4X/100V

R900596771 ZDB10VA1-4X/315V

R900596557 ZDB6VP2-4X/100JV

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R900595254 ZDB10VB1-4X/200V

R900593768 ZDB10VT2-4X/200V

R900593319 ZDB6VA2-4X/200SO2

R900593169 ZDB10VB3-4X/50V

R900591608 ZDB6VB2-4X/100VSO2

R900589823 ZDB10VA3-4X/315V

R900587769 ZDB6VB2-4X/200VSO2

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R900586621 ZDB6VP1-4X/100V

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R900583297 ZDB10VB3-4X/200V

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R900581569 ZDB10VP2-4X/315VSO30

R900581302 ZDB10VB1-4X/200

R900580996 ZDB6VB1-4X/50V

R900580791 ZDB10VP2-4X/315VSO11

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R900564564 ZDBK6VP2-1X/210V

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R900564523 ZDBK10VA2-1X/50V

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R900550125 ZDB10VP7-4X/315V

R900534185 ZDB10VP2-4X/350V

R900528589 ZDB6VA7-4X/200V

R900535697 ZDB4DP2-1X/315V

R900527144 ZDB6VA1-4X/100

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R900522880 ZDB10VP3-4X/100

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R900520338 ZDB10VP1-4X/50V

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R900516958 ZDB6VB3-4X/200V

R900518826 ZDB6VB1-4X/200V

R900513429 ZDB6VA2-4X/200VSO2

R900510491 ZDB10VA1-4X/100V

R900509893 ZDB6VA1-4X/315

R900508780 ZDB6VA2-4X/350V

R900507970 ZDB6VP1-4X/100

R900507526 ZDB6VA1-4X/100V

R900507459 ZDB6VP1-4X/50

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R900506739 ZDB10VA1-4X/200V

R900506373 ZDB10VB3-4X/100V

R900505827 ZDB10VT2-4X/315V

R900503839 ZDB10VP2-4X/200VSO30

R900503434 ZDB6VP2-4X/200SO52

R900503154 ZDB6VP7-4X/200V

R900501749 ZDB6VP7-4X/50V

R900501402 ZDBK6VA2-1X/100V

R900501299 ZDB6VP7-4X/100V

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R900471657 ZDB10VP1-4X/200V

R900468215 ZDB10VA3-4X/200V

R900460711 ZDB6VP3-4X/100

R900460338 ZDB6VA3-4X/315

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R900449008 ZDB6VP1-4X/50V

R900447152 ZDB6VP1-4X/200

R900445935 ZDB6VP1-4X/315

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R900442704 ZDB10VT2-4X/100V

R900440160 ZDB6VB3-4X/50V

R900439335 ZDB10VP3-4X/200

R900438967 ZDB6VA3-4X/200

0811J02210 ZDBEE16VT1-1X/80G24K31M

0811J02169 ZDBEE10VT1-1X/80G24K31M

0811J02167 ZDBEE10VT3-1X/80G24K31M

1817414511 ZDBT-XP3-1X/160V

811402161 ZDBEB10VT1-1X/80G24Z4M

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811104117 ZDBT-XP3-1X/315

811104116 ZDBT-XP3-1X/160

811104115 ZDBT-XP7-1X/315

811104114 ZDBT-XP7-1X/160

811104113 ZDBT-XP2-1X/315

811104112 ZDBT-XP2-1X/160

811104111 ZDBT-XP8-1X/315

811104110 ZDBT-XP8-1X/160

R901133117 ZDB10VA1-4X/100-40V

R901132023 ZDB6VA2-4X/315-220V

R901124451 ZDBEE6VP1-1X/50G24K31M

R901114420 ZDB10VA7-4X/100V

R901114418 ZDB10VB7-4X/50

R901111226 ZDB6VP2-4X/200-130V

R901101916 ZDB6VP2-4X/315V/60

R901087335 ZDB6VB2-4X/315-315

R901085240 ZDB10VA2-4X/200JV

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R901069680 ZDBE6VP2-1X/200G24K4M

R901042668 ZDBE6VP4-1X/200G24NK4M

R901032480 ZDB10VA7-4X/315V

R901022373 ZDBEE6VP2-1X/50G24NK31M

R901017981 ZDB10VB2-4X/315VSO30

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R901011403 ZDBE6VP4-1X/315G24K4M

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R900974995 ZDBE6VP1-1X/200G24K4M

R900972703 ZDBE6VP2-1X/315G24K4M

R900969533 ZDBE6VP4-1X/315G24NK4M

R900967919 ZDB10VP1-4X/315

R900967534 ZDB10VT2-4X/200

R900967530 ZDB10VT1-4X/50

R900967527 ZDB10VP1-4X/100

R900967525 ZDB10VB2-4X/50

R900967524 ZDB10VB1-4X/100

R900967521 ZDB10VA1-4X/50V

R900967507 ZDB6VB1-4X/100

R900967506 ZDB6VB1-4X/50

R900967505 ZDB6VA1-4X/50

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R900961530 ZDB6VP2-4X/200-160V

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R900954437 ZDBEE6VP1-1X/315G24NK31M

R900954436 ZDBEE6VP1-1X/200G24K31M

R900954435 ZDBEE6VP2-1X/100G24K31M

R900954434 ZDBEE6VP2-1X/50G24K31M

R900952363 ZDBEE6VP2-1X/315G24K31M

R900950577 ZDBEE6VP2-1X/315G24NK31M

R900949360 ZDB6VP2-4X/100SO2

R900947382 ZDB6VB2-4X/315SO2

R900947381 ZDB6VB2-4X/350SO2

R900947270 ZDB6VB2-4X/315VSO2

R900943350 ZDBEE6VP2-1X/200G24K31M

R900940177 ZDB6VB2-4X/350

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R900932017 ZDBE6VP1-1X/315G24NK4M

R900931013 ZDB6VA2-4X/315SO2

R900927065 ZDB10VA1-4X/100

R900916050 ZDBE6VP2-1X/100G24NK4M

R900916049 ZDBE6VP2-1X/200G24NK4M

R900910338 ZDB10VB1-4X/315V

R900909480 ZDB6VB1-4X/315

R900907940 ZDB6VB7-4X/315V

R900901256 ZDB6VP2-4X=100V

R900900022 ZDB6VP2-4X/315SO2

R900774011 ZDB10VP2-4X/315SO11

R900771021 ZDBEE6VP4-1X/315G24K31M

R900760681 ZDB6VP2-4X/315P230

R900729287 ZDBEE6VP2-1X/315G24NK31V

R900722389 ZDB6VB2-4X/50SO2

R900716050 ZDB6VB3-4X/200SO2

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R900434550 ZDB10VT2-4X/50SO30

R900433818 ZDB6VP3-4X/315V

R900433646 ZDB6VA1-4X/200V

R900433336 ZDB6VB3-4X/100V

R900433335 ZDB6VA3-4X/100V

R900432804 ZDB6VP2-4X/50

R900432106 ZDB10VA2-4X/50

R900431678 ZDB6VA2-4X/50

R900431561 ZDB6VP3-4X/315

R900431401 ZDB6VB2-4X/100

R900431380 ZDB10VP3-4X/315V

R900431167 ZDB6VB3-4X/100

R900431071 ZDB6VA2-4X/315

R900431065 ZDB10VP2-4X/100

R900431047 ZDB6VP2-4X/100VSO11

R900430984 ZDB10VA2-4X/315

R900430645 ZDB6VB2-4X/50

R900430559 ZDB6VP2-4X/200VSO11

R900430129 ZDB10VP3-4X/315

R900429509 ZDB6VB2-4X/200

R900429149 ZDB10VT2-4X/50V

R900428936 ZDB10VT2-4X/50

R900428468 ZDB10VP2-4X/200

R900428339 ZDB6VP2-4X/200

R900427434 ZDB10VA2-4X/100

R900426730 ZDB6VA2-4X/100VSO2

R900426329 ZDB6VA2-4X/200

R900426313 ZDB6VA1-4X/200

R900425958 ZDB10VA3-4X/50

R900425933 ZDB10VP2-4X/200VSO11

R900425927 ZDB10VP2-4X/315

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R900425810 ZDB6VP2-4X/315VSO11

R900425723 ZDB10VB2-4X/50V

R900425699 ZDB6VP2-4X/200SO11

R900425698 ZDB6VP2-4X/315SO11

R900425683 ZDB6VA3-4X/50

R900425681 ZDB10VB2-4X/315

R900424559 ZDB10VP1-4X/200

R900424537 ZDB10VA2-4X/100V

R900423274 ZDB6VP2-4X/100

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R900422828 ZDB6VA3-4X/315V

R900422752 ZDB10VP2-4X/50V

R900422338 ZDB6VP3-4X/100V

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R900422214 ZDB6VB2-4X/50V

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R900421265 ZDB10VA2-4X/200

R900409959 ZDB10VP2-4X/100V

R900409958 ZDB10VP2-4X/315V

R900409956 ZDB10VB2-4X/315V

R900409955 ZDB10VA2-4X/315V

R900409951 ZDB10VB2-4X/100V

R900409937 ZDB10VP2-4X/200V

R900409936 ZDB6VB2-4X/100V

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R900409893 ZDB6VA2-4X/315V

R900409889 ZDB6VA2-4X/100V

R900409886 ZDB6VA2-4X/200V

R900409854 ZDB6VB2-4X/200V

R900409847 ZDB6VP2-4X/50V

R900409844 ZDB6VP2-4X/200V

R900406615 ZDB6VA2-4X/50V

R900403470 ZDB6VA3-4X/200V

R900402018 ZDB10VP1-4X/315V

R900967527 ZDB10VP1-4X/100

R900967507 ZDB6VB1-4X/100

R900906981 ZDB10VA3-4X/100

R900314793 DICHTUNGSSATZZDB6.-33/V

R900314467 DICHTUNGSSATZZDB10-3X/V

R900314466 DICHTUNGSSATZZDB10-3X

R900312412 DICHTUNGSSATZDBE/ZDBE6.-1X/V

R900312411 DICHTUNGSSATZDBE/ZDBE6.-1X/

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R900430984 ZDB10VA2-4X/315

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R900425681 ZDB10VB2-4X/315

R900424537 ZDB10VA2-4X/100V

R900423274 ZDB6VP2-4X/100

R900422752 ZDB10VP2-4X/50V

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R900422189 ZDB10VA2-4X/200V

R900422089 ZDB6VP3-4X/200

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R900422061 ZDB6VB2-4X/315

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R900409955 ZDB10VA2-4X/315V

R900409951 ZDB10VB2-4X/100V

R900409936 ZDB6VB2-4X/100V

R900409933 ZDB6VP2-4X/100V

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R900409889 ZDB6VA2-4X/100V

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R900409847 ZDB6VP2-4X/50V

R900409844 ZDB6VP2-4X/200V

R900406615 ZDB6VA2-4X/50V

811109141 ZDBY6DB2-1X/315V/60

811109137 ZDBY6DA2-1X/315V/60

811109136 ZDBY6DA2-1X/160V/60

811109135 ZDBY6DA2-1X/80V/60

811109133 ZDBY6DP2-1X/315V/60

811109132 ZDBY6DP2-1X/160V/60

811104121 ZDBT-XA2-1X/315

811104119 ZDBT-XA8-1X/315

811104118 ZDBT-XA8-1X/160

811104113 ZDBT-XP2-1X/315

811104112 ZDBT-XP2-1X/160

811104110 ZDBT-XP8-1X/160

博世力士乐REXROTH溢流阀DBDS10P18/315先导式溢流阀用于调节主阀上腔的液压力。主阀芯在其上腔液压作用力和弹簧力的共同作用下与下腔液压作用力相平衡。当导阀前腔液压作用力低于其调定弹簧力时，导阀和主阀阀口均处于关闭状态，溢流口无液体流出。当导阀前腔液压作用力超过其调定弹簧力时，导阀开启，此时阻尼孔中有液体流动，主阀上下腔产生压力差，若此压差对主阀芯所产生的作用力小于主阀弹簧力，则主阀口仍处于关闭状态；若此压差对主阀芯所产生的作用力大于主阀弹簧力，就会使主阀开启并溢流。主阀弹簧力随其开口量的加大而加大，直至与主阀芯上的液压作用力相平衡。