ZDREB10VP1X-1X/250YMG24-25Z4M比例减压阀 德国原装博世力士乐REXROTH比例减压阀 比例溢流阀
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ZDREB10VP1X-1X/250YMG24-25Z4M比例减压阀
性能
(1)调压范围:它是指减压阀输出压力P2的可调范围,在此范围内要求达到规定的精度。调压范围主要与调压弹簧的刚度有关。
(2)压力特性:它是指流量g为定值时,因输入压力波动而引起输出压力波动的特性。输出压力波动越小,减压阀的特性越好。输出压力必须低于输入压力—定值才基本上不随输入压力变化而变化。
(3)流量特性:它是指输入压力—定时,输出压力随输出流量g的变化而变化的持性。当流量g发生变化时,输出压力的变化越小越好。一般输出压力越低,它随输出流量的变化波动就越小
减压阀的减压保障系统
无论选用比例式还是可调式减压阀,其减压比P1∶P2不宜选择过大,一般应控制在5∶1之内。超过这个范围易产生气蚀现象,损坏阀件,产生啸叫噪音。有些活塞式减压阀,制造厂在其阀体上加工一个直径1.5mm左右的小孔,其功能是让阀芯运动时起到透吸气作用,维护管理时应注意千万不要将小孔塞住,否则影响减压阀的正常运行。
电液比例阀是一种性能介于普通控制阀和电液伺服阀之间的新阀种。它既可以根据输入电信号的大小连续成比例地对油液的压力、流量、方向实现远距离控制、计算机控制,又在制造成本、抗污染等方面优于电液伺服阀。
电液比例阀根据用途分为:电液比例压力阀,电液比例流量阀,电液比例方向阀。
电液比例阀的控制性能低于电液伺服阀,因此广泛应用于要求不高的一般工业部门。
电液比例溢流阀
组成:
比例电磁铁 直动式溢流阀主体
工作原理:
输入一I,产生一电磁力,作用于阀心上,得到- -控制压力,其pI, I变化,p也变化。
ZDREB10VP1X-1X/250YMG24-25Z4M比例减压阀
型号 (Z)DRE and ZDREE 10
比例减压阀,先导式
规格6和10
安装面按DIN 24340 A型和ISO 4401
用于降低系统压力的阀
比例电磁铁操作
底板安装,DRE 6型
叠加式,ZDRE 6 和10型
线性压力/指令值特性曲线
集成电控器(OBE),用于ZDREE 10
型号 DRE(M) 和 DRE(M)E
比例减压阀,先导式
规格10至32
安装面按DIN 24340 D型
用于降低系统压力的阀
比例电磁铁操作
底板安装
线性压力/指令值特性曲线
用于DREM和DREME型的大减压功能
可选单向阀,在A和B油口之间
集成电控器(OBE),用于DREE和DREME
力士乐比例减压阀现货供应型号
0811J02182 力士乐比例减压阀ZDRE6VP1X-1X/180G24-25Z4M
0811J02166 力士乐比例减压阀ZDREB10VP4X-1X/250YMG24-8Z4M
0811J02165 力士乐比例减压阀ZDRE10VP2X-1X/180LG24-25Z4M-8
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0811A02182 力士乐比例减压阀ZDRE6VP1X-1X/180G24-25Z4M
0811402270 力士乐比例减压阀DREBE25Z-1X/315XYMG24K31A1M
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0811402154 力士乐比例减压阀DRE10Z-1X/315XYMG24-8NZ4M
0811402153 力士乐比例减压阀DRE10Z-1X/180XYMG24-8NZ4M
0811402152 力士乐比例减压阀DREBE10Z-1X/315XYMG24K31A1M
0811402151 力士乐比例减压阀DREB10Z-1X/315XYMG24-37Z4M
0811402150 力士乐比例减压阀DREB10Z-1X/180XYMG24-37Z4M
0811402085 力士乐比例减压阀DREBE6X-1X/310MG24K31F1M
0811402083 力士乐比例减压阀DREBE6X-1X/175MG24K31F1M
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R900967550 力士乐比例减压阀3DREP6A-1X/2高等24NK4M-596
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液压系统的组成及其作用
一个完整的液压系统由五个部分组成,即动力元件、执行元件、控制元件、辅助元件(附件)和液压油。
动力元件的作用是将原动机的机械能转换成液体的压力能,指液压系统中的油泵,它向整个液压系统提供动力。液压泵的结构形式一般有齿轮泵、叶片泵和柱塞泵。
执行元件(如液压缸和液压马达)的作用是将液体的压力能转换为机械能,驱动负载作直线往复运动或回转运动。
控制元件(即各种液压阀)在液压系统中控制和调节液体的压力、流量和方向。根据控制功能的不同,液压阀可分为村力控制阀、流量控制阀和方向控制阀。压力控制阀又分为益流阀(安全阀)、减压阀、顺序阀、压力继电器等;流量控制阀包括节流阀、调整阀、分流集流阀等;方向控制阀包括单向阀、液控单向阀、梭阀、换向阀等。根据控制方式不同,液压阀可分为开关式控制阀、定值控制阀和比例控制阀。
辅助元件包括油箱、滤油器、油管及管接头、密封圈、快换接头、高压球阀、胶管总成、测压接头、压力表、油位油温计等。
液压油是液压系统中传递能量的工作介质,有各种矿物油、乳化液和合成型液压油等几大类。