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济南液压升降机液压阀的选择原则

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1、济南液压升降机液压阀选择时按系统的的拖动与控制功能要求,合理选择液压阀的机能和品种,并与液压泵、执行器和辅助元件等一起构成完整的液压回路与系统原理图。

Jinan hydraulic lift hydraulic valve selection by dragging the control system functional requirements, a reasonable choice of hydraulic valve function and varieties, and with hydraulic pumps, actuators and auxiliary components together constitute a complete hydraulic circuit and system schematics.

2、济南液压升降机液压阀应该优先选用现有标准定型系列产品,除非不得已才自行设计专用液压控制阀。

Jinan hydraulic lift hydraulic valve should be preferred standard stereotypes existing products, unless compelled to design their own special hydraulic control valve.

3、济南液压升降机液压阀选择时根据系统工作压力与通过流量,并考虑阀的类型、安装连接方式、操纵方式、工作介质。尺寸与重量、工作寿命、经济性、适应性与维修方便性、货源及产品历史等,从相关的设计手册或产品样本中选择。

Jinan hydraulic lift system operating according to the hydraulic pressure and flow through the valve selection, and considering the type of valve, installation connections, manipulation, working media. Size and weight, working life, the economy, adaptability and ease of maintenance, supply and product history, choose from the relevant design manuals or product samples.

4、济南液压升降机液压阀公称压力和额定流量的选择

各液压控制阀的公称压力和额定流量一般应与其工作压力和工作压力和工作流量相近。对于可靠性能要求较高的系统,阀的公称压力应高出其工作压力较多。一般而言,阀的公称压力大于或等于系统工作压力是比较安全和合理的选择。系统工作流量若与阀的额定流量接近,显然是最经济、合理的匹配;如果额定流量小于工作流量,则易引起液压卡紧和液动力,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,其工作流量不应远小于额定流量,否则易产生振动或其它不稳定现象。对于流量阀,应注意最小稳定流量。

Each hydraulic control valve nominal pressure and rated flow should generally be their job stress and job stress and work flow similar. For high system reliability requirements, the valve should be higher than the nominal working pressure more. Nominal general, the valve is greater than or equal to the system pressure is relatively safe and reasonable choice. If the system work flow close to the rated flow valves, is clearly the most economical and reasonable match; if less than the rated flow of work flow, is easy to cause the hydraulic clamping and hydraulic power, and adversely affect the quality of the valve. In order for the system and pressure reducing valve, its work should be much less than the rated flow of traffic, or easy to produce vibrations or other instability. For flow valve, should pay attention to the smallest stable flow.