关于比例阀,你想知道的一切在这里(中英文)
什么是比例控制阀以及比例阀的作用是什么
What is a proportional control valve and what is the function of a proportional valve
比例阀是一种能够响应电输入的变化而改变输出的阀门。这些阀也称为电液阀,它们与液压伺服阀有一些相似之处,都是电控的。在该阀门中,阀门的阀芯由螺线管驱动。伺服阀和比例阀之间的主要区别在于伺服阀用于闭环系统,而比例阀用于开环和闭环系统。比例阀可用作方向控制阀或压力控制阀,但大多数这些阀用作方向控制阀。驱动是在电信号的帮助下完成的。阀门的流向和流量受控制信号的影响。
A proportional valve is a valve that is capable to change the output, in response to the variation of electrical input. These valves are also called electrohydraulic valves and they have some similarities with the hydraulic servo valves like both of them are electrically controlled. In this valve, the spool of the valve is driven with the help of a solenoid. The major difference between a servo valve and a proportional valve is servo valves are used in closed-loop systems, whereas proportional valves are used in open and closed-loop systems. Proportional valves can be used as a direction control or pressure control valve but mostly these valves are used as direction control valves. The actuation is done with the help of an electric signal. The flow direction and flow rate of the valve are influenced by the control signal.
比例电磁阀有哪些特点
What are the features of a proportional solenoid valve
这些阀门具有闭环控制系统,因此阀门是借助传感器的电气输入来控制的。由于这一特性,比例电磁阀被用于许多应用。这些阀门还具有某些安全功能,例如,在断电或电气输入中断的情况下,阀门将立即关闭。比例电磁阀寿命长,只需较少的维护。电磁操作器只有一个运动部件。
These valves have a closed-loop control system, so the valves are controlled by the help of electrical inputs from the sensor. Because of this feature, the proportional solenoid valves are used for many applications. These valves also have certain safety features like, in case of power failure or if the electrical input is interrupted then the valve will close immediately. Proportional solenoid valves have a long life and it only needs less maintenance. The solenoid operator has only one moving part
比例阀是如何构造的
How proportional valves are constructed
在比例阀中,阀芯由硬化钢制成,阀体由高级液压铸件制成,并涂漆。电磁阀经过镀锌处理,电子设备外壳由铝制成。比例阀芯在铸造体内滑动。它们的结构与方向控制阀类似,非常坚固。这些阀门具有高流通能力,而且也很经济。节流区域由阀芯上切出的槽口形成。凹口尺寸和几何形状决定给定外壳的流通能力。
In a proportional valve, the spool is made up of hardened steel and the body is made up of high-grade hydraulic casting and it is painted. The solenoids are zinc coated and the housing for the electronic is made up of aluminum. The proportional spool slide in the cast body. Their construction is robust similar to the directional control valves. These valves have high flow capacity and they are economical too. The throttle area is formed by notches cut into the spool. The notch size and geometry determine the flow capacity of a given housing.
比例阀的工作原理
How proportional valve works
比例流量控制阀可以被认为是液压阀驱动与电子控制的结合。通过使用比例阀来减少液压回路,当使用比例阀时,它将减少系统中的组件数量。使用比例阀将提高系统的精度和效率。比例方向控制阀将根据输入电信号改变流体流量。这些阀门产生与电子控制输入成比例的输出。输出将采用三种形式:方向、压力和流量。阀门中的线圈主要以直流电运行,并且可以通过改变电压来运行。这将产生变化的力,并且该力用于移动线轴。这些阀门具有高效率和准确性,远程激活是该阀门的另一个优点。这些阀门能够控制气缸或其他液压马达。
The proportional flow control valve can be considered as the combination of the hydraulic valve actuation with advanced electronic control. The hydraulic circuitry is reduced by using a proportional valve, when a proportional valve is used it will reduce the number of components in a system. The accuracy and efficiency of the system will increase by using a proportional valve. A proportional directional control valve would vary the fluid flow according to the input electrical signal. These valves produce output proportionally to the electronically controlled input. The output will be in three forms they are direction, pressure, and flow. The coils in the valves mostly operate in DC and it could be by varying voltages. This would create a varying force and this force is used to shift the spool. These valves have high efficiency and accuracy and remote activation is another advantage of this valve. These valves are capable to control cylinders or other hydraulic motors.
阀门的操作是通过从外部设备接收到的信号来进行的,该设备可以是 PLC、计算机或电位计。控制装置将向阀门驱动卡提供电信号,并向阀门电磁阀发送电流信号。由于作用在其上的力,阀芯将发生移动,并在泵和执行器端口之间形成一条流路。根据输入的输入信号,阀芯发生换档。传感器用于检查阀芯运动。
The operation of the valve takes place by a signal that is received from an outside device the device could be a PLC, computer, or potentiometer. The control device will give the electrical signals to the valve driver card and it would send a current signal to the valve solenoid. The spool will be shifted because of the force that acts on it and a flow path is created between the pump and the actuator port. According to the input in-put signal, the spool shifting takes place. A transducer is used to check the spool movement.
如何选择比例控制阀
How to select a proportional control valve
• 可根据用于流量或压力控制等过程进行选择
• 检查系统的工作温度是否适合比例阀
• 检查重复性,即阀门的流量
• 反向灵敏度是改变流量所需的电输入的变化
• 阈值,是从零位置开始流量所需的电输入。
• It can be selected according to the process that is used for like flow or pressure control
• Check whether the operating temperature of the system is suitable for the proportional valve
• Check the repeatability it is the flow rate of the valve
• Reverse sensitivity is the change in the electrical input that is required to change the flow rate
• Threshold, it is the electrical input that is necessary for the flow from zero position.
什么是液压比例阀
What is a hydraulic proportional valve
比例阀用于液压系统,因为这些阀能够根据接收到的输入多次定位阀芯。这些阀门用于需要不止一种执行器速度的电路中。比例阀可用于液压系统中,以控制压力、流量和方向。通过使用该阀门,系统的效率将会提高。因此,通过使用这个单一阀门,可以控制流量、压力和方向,这也简化了电路。
Proportional valves are used in hydraulic systems because these valves are capable to position the spool many times according to the received input. These valves are used in circuits that need more than one speed of actuators. Proportional valves can be used in the hydraulic system so that it can control the pressure, flow, and direction. By using this valve the efficiency of the system will increase. So by using this single valve, we can control the flow, pressure, and direction, and this would also simply the circuit.
比例阀有哪些类型
What are the types of proportional valves
比例方向控制阀
Proportional directional control valve
这些阀门在许多液压应用中用于方向控制。这些阀门主要用于闭环应用。某些类型的比例方向控制阀没有任何阀芯反馈,这些阀用于开环控制应用,并且可以是直接操作或先导操作。
These valves are used in many hydraulic applications for direction control. Mostly these valves are used in closed-loop applications. Certain type of proportional direction control valves doesn’t have any spool feedback and these are for open-loop control applications and they can be direct or pilot operated.
比例流量控制阀
Proportional flow control valve
集成压缩机或静压装置用于限制节流孔上的压力。因此,当负载力发生变化时,流量不会发生任何变化。
An integrated compressor or hydrostatic is used to limit the pressure across the throttling orifice. So when the load force change there won’t be any change in the flow.
比例溢流阀
Proportional pressure relief valve
这些阀门可以限制液压回路中的压力,并且该限制通过电子控制进行调节。泄压过程中会有多余的流量,多余的流量被送到储罐。
These valves can limit the pressure in a hydraulic circuit and this limit is adjusted by electronic control. There would be excess flow during the pressure-relieving process and this excess flow is sent to the reservoir tank
比例控制阀有哪些应用
What are the applications of proportional control valve
• 这些阀门用于需要高分辨率、大流量和低滞后的应用
• 用于液压系统
• 土方机械
• 机器人技术
• 机床和造纸生产
• These valves are used in applications where high resolution, high volume flow, and low hysteresis is needed
• Used in hydraulic systems
• Earthmoving machines
• Robotics
• Machine tools and paper production
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