| 价格 | 333.00元 |
|---|---|
| 区域 | 湖北省 |
| 来源 | 武穴黎翔机电有限公司 |
详情描述:
德国力士乐减压阀 R900413242 DR6DP2-5X/150Y 特价现货
经营产品:
阀类:电磁阀、换向阀、单向阀、溢流阀、减压阀、平衡
阀、插装阀、比例阀等
泵类:齿轮泵、柱塞泵、叶片泵等
承诺:保证原装正品,假一赔十 量大价格好商量!!
武穴黎翔机电设备有限公司REXROTH力士乐销售部
询价联系人:陈工
询价QQ: 1477538929, 2593165857
欢迎您的来电!
广泛应用于钢铁、冶金、铝行业、石油化工、航天、船舶制造、煤炭、水泥、电力、汽车、工程机械、食品、药业、林业、纺织、皮革、造纸等行业领域
经营产品:
阀类:电磁阀、换向阀、单向阀、溢流阀、减压阀、平衡
阀、插装阀、比例阀等
泵类:齿轮泵、柱塞泵、叶片泵等
承诺:保证原装正品,假一赔十 量大价格好商量!!
武穴黎翔机电设备有限公司REXROTH力士乐销售部
询价联系人:陈工
询价QQ: 1477538929, 2593165857
欢迎您的来电!
广泛应用于钢铁、冶金、铝行业、石油化工、航天、船舶制造、煤炭、水泥、电力、汽车、工程机械、食品、药业、林业、纺织、皮革、造纸等行业领域
减压阀是通过调节,将进口压力减至某一需要的出口压力,并依靠介质本身的能量,使出口压力自动保持稳定的阀门。从流体力学的观点看,减压阀是一个局部阻力可以变化的节流元件,即通过改变节流面积,使流速及流体的动能改变,造成不同的压力损失,从而达到减压的目的。然后依靠控制与调节系统的调节,使阀后压力的波动与弹簧力相平衡,使阀后压力在一定的误差范围内保持恒定。
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。
它可将阀前管路较高的液体压力减少至阀后管路所需的水平。这里的传输介质主要是水。减压阀广泛用于高层建筑、城市给水管网水压过高的区域、矿井及其他场合,以保证给水系统中各用水点获得适当的服务水压和流量。鉴于水的漏失率和浪费程度几乎同给水系统的水压大小成正比,因此减压阀具有改善系统运行工况和潜在节水作用,据统计其节水效果约为30%。
0811404114
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0811402642 FESXE50CA-1X/980LK0B1M
德国力士乐DRE6X先导式比例减压阀
通径 NG 6
设备系列 1X
大工作压力 P 315bar,T 250bar
大体积流量 40 L/min
特征:
-先导阀,用于降低负载上的系统压力(控制油仅在内部)
-三通型式(P-A/A-T)
-可通过线圈电流进行调节,技术参数和所选用的电子控制单元
-电磁铁类型Imax=0.8A
-即使当电子控制单元损坏时,也能大程度地实现过压保护
-用于阀板安装(需单独订货)
-符合DIN 43650-AM2标准的线缆插座,包括在供货范围内
-具有斜坡功能和阀调节功能的外部电子控制单元(需单独订货)
插头,设定值0...+10V 或者4...20mA
模块,额定值0...+10V
欧标插卡。额定值0...+10V
DRE6X型比例减压阀为先导型式,主级是一种三通构造。在内部通过P将流量经过调节的控制油供应给先导阀,通过比例电磁铁克服弹簧力的方式进行控制。衔铁有减振措施,可保持稳定性。电磁铁的内腔充满液压油,并通过T进行连接。可以通过螺旋塞进行排气。使用这些阀可以根据线圈电流的变化,连续调节降低A(负载)中的压力。
基本原理
通过电子控制单元确定某个设定值,对A中的系统压力进行调节。
电子控制单元根据设定值,利用稳压PWM电流(PWM=脉冲宽度调制)对励磁线圈进行控制,利用震荡信号对电流进行调制,以获得小滞后量。
比例电磁铁将电流转变成机械作用力,并通过衔铁挺杆使先导级中的主弹簧预紧,通过流量调节阀,从P给先导级供应流量小于0.6L/min的液压油。将先导压力与A中的负载压力(外加弹簧力)进行比较和调节(P-A/A-T)。
弹簧使得T中的Pamin=P提供大程度的过压保护。
如果电子控制单元中出现故障,并且因此失控而超过线圈电流,则主要由大弹簧力来实现过压保护。
SL 15 GB2-42/V
SL 15 GB2-4X/V
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