V18345-2020150001 | 阀门定位器 | SNAT607 MCI | NTAI06

　　型号：V18345-2020150001

　　类别：阀门定位器

　　成色：全新/非全新

　　质保：一年

　　快递：顺丰/德邦

　　阀门定位器是一种用于管道系统中的自动化装置，主要用于对阀门位置进行实时监测和控制。以下是关于阀门定位器的详细回答：

　　一、定义及作用

　　V18345-2020150001 阀门定位器是调节阀的主要附件，它接受调节器的输出信号，然后以它的输出信号去控制气动调节阀。当调节阀动作后，阀杆的位移又通过机械装置反馈到阀门定位器，阀位状况通过电信号传给上位系统。其主要作用包括：

　　实时监测和控制阀门位置，确保管道系统的正常运行。

　　增大调节阀的输出功率，减少调节信号的传递滞后。

　　加快阀杆的移动速度，提高阀门的线性度。

　　克服阀杆的摩擦力并消除不平衡力的影响，保证调节阀的正确定位。

　　应用

　　V18345-2020150001 阀门定位器通常与各种类型的阀门一起使用，如球阀、蝶阀、截止阀等。其应用范围广泛，包括石油、化工、电力、冶金、环保等领域。

　　四、作用原理

　　V18345-2020150001阀门定位器通过传感器测量阀门的位置信息，并将这些信息发送给控制室。控制室的操作员可以通过控制系统实时监测阀门的位置，并对其进行远程控制。同时，阀门定位器还能根据调节阀工作时阀杆摩擦力等因素，抵消介质压力波动而产生的不平衡力，使阀门开度对应于控制室输出的信号。

　　Model: V18345-2020150001

　　Category: Valve positioner

　　Finish: New/not new

　　Warranty: One year

　　Express: SF Express/Debon

　　Valve positioner is an automatic device used in pipeline system, which is mainly used for real-time monitoring and control of valve position. The following is a detailed answer about the valve positioner:

　　1. Definition and function

　　V18345-2020150001 Valve positioner is the main accessory of the regulator, it accepts the output signal of the regulator, and then uses its output signal to control the pneumatic regulator. When the regulating valve is operated, the displacement of the valve stem is fed back to the valve positioner through the mechanical device, and the valve position is transmitted to the upper system by electrical signal. Its main functions include:

　　Monitor and control valve position in real time to ensure the normal operation of piping system.

　　Increase the output power of the regulating valve and reduce the transmission lag of the regulating signal.

　　Speed up the movement of the valve stem and improve the linearity of the valve.

　　Overcome the friction of the valve stem and eliminate the influence of unbalanced force to ensure the correct positioning of the regulating valve.

　　Apply

　　V18345-2020150001 Valve positioners are commonly used with various types of valves, such as ball valves, butterfly valves, globe valves, etc. Its application range is wide, including petroleum, chemical industry, electric power, metallurgy, environmental protection and other fields.

　　Fourth, the principle of action

　　The V18345-2020150001 Valve positioner measures valve position information through sensors and sends this information to the control room. The operator in the control room can monitor the position of the valve in real time through the control system and control it remotely. At the same time, the valve positioner can also offset the unbalanced force caused by medium pressure fluctuations according to the valve stem friction and other factors when the regulator works, so that the valve opening corresponds to the output signal of the control room.