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重庆管件之选择液压控制阀的注意事项

发布时间:2019-07-09 来源:

选择液压控制阀的注意事项:
Considerations for the choice of control valve hydraulic:
1、液压阀的实际流量
1, the actual flow of hydraulic valve
液压阀的实际流量与油路的串、并联有关:串联油路各处流量相等;同时工作的并联油路的流量等于各条油路流量之和。此外‚对于采用单活塞杆液压缸的系统‚要注意活塞外伸和内缩时的回油流量的不同:内缩时无杆腔回油与外伸时有杆腔回油的流量之比‚与两腔面积之比相等。
Series, parallel the actual flow of hydraulic valve and oil related: traffic throughout the series equivalent circuit; simultaneously in parallel oil flow is equal to the sum of each oil flow. In addition. For the system. The single hydraulic cylinder piston rod should pay attention to the shrink of the piston extended and the oil flow back to the different: rodless cavity and extended back to the oil chamber when the rod back to the oil flow in the ratio. And the ratio of cavity area equal to two.
2、液压阀的额定压力和额定流量
The rated pressure and rated flow, hydraulic valve 2
各液压控制阀的额定压力和额定流量一般应与其使用压力和流量相接近。对于可靠性要求较高的系统‚阀的额定压力应高出其使用压力较多。如果额定压力和额定流量小于使用压力和流量‚则易引起液压卡紧和液压动力并对阀的工作品质产生不良影响;对于系统中的顺序阀和减压阀‚其通过流量不应远小于额定流量‚否则易产生振动或其他不稳定现象。对于流量阀‚应注意其小稳定流量。
The rated pressure and rated flow the hydraulic control valve and its use should generally be close to the pressure and flow. For the rated pressure valve system. Higher reliability requirement should be more than the use of pressure. If the rated pressure and rated flow less than the use of pressure and flow. It is easy to cause the power the hydraulic clamping and hydraulic valves and adversely affect the quality of work; the sequence valve and pressure relief valve. In the system the through traffic should not be far less than the rated flow. Otherwise, easy to produce vibration or other instability. For the flow valve should pay attention to the minimum stable flow.
3、液压阀的安装连接方式
3, the installation of hydraulic valve connection
由于阀的安装连接方式对后续设计的液压装置的结构型式有决定性的影响‚所以选择液压阀时应对液压控制装置的集成方式做到心中有数。例如采用板式连接液压阀‚因阀可以装在油路板或油路块上‚一方面便于系统集成化和液压装置设计合理化‚另一方面更换液压阀时不需拆卸油管‚安装维护较为方便;如果采用叠加阀‚则需根据压力和流量研究叠加阀的系列型谱进行选型等。
Because the structure of integrated hydraulic device valve is designed for connection to the follow-up has decisive effect. So select the hydraulic valve hydraulic control devices should do know the score. For example, to connect the hydraulic valve with plate. Because the valve can be installed in the oil circuit plate or block. On the one hand to facilitate system integration and design of hydraulic equipment rationalization. On the other hand when the hydraulic valve replacement pipe without disassembly. Installation and maintenance more convenient; if the Superposition valve. You need according to a series of pressure and flow study Superposition valve spectrum selection.
4、方向控制阀的选用
The 4, the directional control valve
对于结构简单的普通单向阀‚主要应注意其开启压力的合理选用:较低的开启压力‚可以减小液流经过单向阀的阻力损失;但是‚对于作背压阀使用的单向阀‚其开启压力较高‚以保证足够的背压力。对于液控单向阀‚除了本款换向阀中相关的注意事项外‚为避免引起系统的异常振动和噪音‚还应注意合理选用其泄压方式:当液控单向阀的出口存在背压时‚宜选用外泄式‚其他情况可选内泄式。

For ordinary one-way valve. The simple structure of the main attention should be paid to the reasonable selection of opening pressure: a lower opening pressure. Can reduce the flow resistance through the loss of one-way valve; however. For the one-way valve. The back pressure valve used in the opening pressure is high. To ensure sufficient back pressure. For the hydraulic control one-way valve. In addition to this valve in the relevant notice abnormal vibration and noise. Things. To avoid the system should also pay attention to rational use of the pressure relief mode: when the hydraulic control one-way valve outlet pressure. There is better to use the leak type. Other optional internal discharge type.

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