天蝶阀门带您认识电动执行器的发展历史及阀门电动装置的组成
现如今电动执行器和阀门电动装置已被广泛作用于各行各业，那么电动执行器的发展历史是怎样的呢？天蝶阀门小编带您来了解一下吧！
简述电动执行器及阀门电动装置的组成
The development history of valve electric device and the composition of valve electric device are briefly introduced
自1929年LIMITORQUE制造出了世界上台阀门电动装置以来，电动执行器获得了较快的发展．国外是将电动执行机构与电动装置视为同一类产品，分别应用于闭环控制系统和开环控制系统。阀门电动装置在国内电力、冶金、石油化工、污水处理及市政等各个行业得到应用。与其他阀门驱动装置相比，电动驱动装置具有动力源广泛，操作迅速、方便等特点，并且容易满足各种控制要求。所以，在阀门驱动装置中，电动装置占主导地位。
Since 1929, LIMITORQUE has produced the world's first valve electric device, the valve electric device has been developed rapidly the construction and the electric device are regarded as the same kind of products, which are respectively applied to the closed loop control system and the open-loop control system. Valve electric device in the domestic electric power, metallurgy, petrochemical, sewage treatment and municipal and other industries have been applied.Compared with other valve drive devices, electric drive device has a wide range of power sources, rapid operation, convenience, and easy to meet various control requirements.Therefore, in the valve drive, electric devices dominate.
用户的需求是多种多样的，有希望带控制的、带无线遥控的、带状态显示的、带总线通讯等。现场的工况条件千差万别，如长期潜水、抗辐射、抗震动、耐高温、耐腐蚀、防爆等。总体上阀门电动装置的发展正按照用户需求、工况条件朝着高智能型、高可靠性两个方向发展：
The user's needs are diverse, there is hope with control, with wireless remote control, with state display, with bus communications.The work-ing conditions on site vary widely, such as long-term diving, anti-radiation, anti-vibration, high temperature, corrosion resistance, explosion-proof and so on.On the whole, the development of the valve electric device is developing in two directions, that is, high intelligence and high reliability according to the user's demand and work-ing condition:
一是随着电力电子技术、计算机技术及通讯技术的快速发展，单片机和新型高速微处理器代替以模拟电子器件为主的阀门电动装置控制单元，阀门电动装置正朝着高智能型方向快速发展，功能越来越强大。适合一般现场工况环境，操作和控制越来越方便。
First, with the rapid development of power electronic technology, computer technology and communication technology, MCU and new high speed microprocessor are the main substitutes for analog electronic devices valve electric device control unit, valve electric device is moving in the direction of rapid development of high intelligence, more and more powerful.It is more and more convenient to operate and control for general work-ing conditions.
二是为适应特殊行业的恶劣工况环境，这些场合往往对阀门电动装置自身控制的要求不高，但特别强调高可靠性，通过特殊的机械结构设计和材料选用，经过严酷的试验测试．使阀门电动装置正朝着高可靠性方向发展。
Second, in order to adapt to the harsh work-ing conditions of special industries, these occasions often do not have high requirements for the self-control of valve electric devices.But special emphasis on high reliability, through the special mechanical structure design and material selection, after rigorous test tests, so that the valve electric device is moving toward high reliability direction.
电动阀门一般是由给排水专业选型的，给排水专业技术人员在工程设计时须对阀门的电动装置提出具体的功能要求，并由专业制造厂商对电动装置进行选型。然而，在实际工程中经常会发生在现场安装时，阀门电动驱动装置与控制系统冲突等不匹配的现象。这通常是由于在确定电动装置的功能需求时有不合理或是不完善的地方。
Electric valves are generally selected by the professional water supply and drainage, water supply and drainage professional and technical personnel in the engineering design of the electric device to the valve to put forward specific functional requirements, and by the professional manufacturers of electric devices selection.However, in the practical engineering, there is often a mismatch between the electric drive of the valve and the control system when it is installed on the site. This is usually due to unreasonable or imperfect aspects in determining the functional requirements of an electric device.
阀门电动装置的组成一般由下列部分组成：电动机减速机构，用以降低电动机的输出转速；行程控制机构，用以调节和准确控制阀门的启闭位置；转矩限制机构，用以调节转矩（或推力）并使之不超过预定值；手动、电动切换机构，进行手动或电动操作的联锁机构；开度指示器，用以显示阀门在启闭过程中所处的位置。其中，行程控制机构、转矩限制机构、手动、电动切换机构及开度指示器等合称为电动执行器。
The stroke control mechanism is used for adjusting and accurately controlling the opening and closing position of the valve;a torque limiting mechanism for adjusting the torque (or thrust) so that it does not exceed a predetermined value;manual, electric switching mechanism, manual or electric operation of the interlock mechanism;the opening indicator is used to show the position of the valve in the opening and closing process. The stroke control mechanism, the torque limiting mechanism, the manual, the electric switching mechanism and the opening indicator are collectively referred to as electric actuators.
