针型阀门驱动装置

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原文：
针型阀门驱动装置就是利用外加动力启闭针型阀门的装置。使用驱动装置的目的是使阀门的操作省力方便﹑迅速可靠，或实现自动控制和遥控。对阀门驱动装置的基本要求是：转矩或推力能满足阀门的启闭需要，对行程和转矩的控制精确可靠，动力的选用适合现场情况，启闭动作符合控制要求，装置本身轻小。针型阀门驱动装置按输出轴运动方式分为多回转式﹑部分回转式和直线往复式3种。多回转式即多圈回转式，适用于阀杆或阀杆螺母需要回转多圈才能全开或全关的阀门，如闸阀﹑截止阀，输出转矩值的系列一般为40～10000牛米(推力为20～1100千牛)。部分回转式适用于阀杆在回转一圈之内就能全开或全关的阀门，如球阀﹑蝶阀，其输出转矩的系列一般为 125～125000牛米。直线往复式适用于阀杆只做直线往复运动就能全开或全关的阀门如电磁阀。针型阀门驱动装置按动力源可分为手动装置﹑齿轮传动装置、气动装置﹑电动装置﹑液动装置﹑气液联动装置﹑电液联动装置等。最原始和最简单的阀门驱动装置是手轮、手柄。随着针型阀门的大型化和生产过程的自动化，对各种针型阀门驱动装置的需要越来越多。针型阀门驱动装置在工业生产自动化中占有重要地位。

“Needle valve drive”是由中国针型阀网提供的国际阀门新闻，译文仅供参考。另外，中国针型阀网还提供相关产品搜索：仪表阀组、仪表球阀(气动管路球阀)、仪表截止阀(气动管路截止阀)、更多针型阀产品、针型阀价格等。

译文：
Needle valve drive Needle valve drive is to use external power open and close the needle valve of the device. The purpose of using the drive is to make the effort to facilitate the operation of the valve ﹑ fast and reliable, or automatic control and remote control. Valve drive for the basic requirements are: torque or thrust open and close valves to meet the needs of the travel and torque control of accurate and reliable, dynamic selection of suitable site conditions, opening and closing action in line with the control requirements, the device itself is light small. Needle valve drive according to the output shaft rotary movement pattern is divided into many parts ﹑ rotary and linear reciprocating three kinds. Multi-turn multi-turn rotary type that is suitable for stem or stem nut need to turn multi-turn valve fully open or fully closed, such as gate valve ﹑, the output torque value of the series is generally 40 to 10 000 cattle meters (20 to 1100 kN thrust). Part of the rotary ring for rotation within the valve stem will be able to fully open or fully closed valve, such as ﹑ butterfly valve, the output torque of the series is generally 125 to 125,000 Nm. For linear reciprocating movement can stem only reciprocating the valve fully open or fully closed, such as solenoid valves. Needle valve drive according to the power source can be divided into manual device ﹑ gear drives, pneumatic device ﹑ ﹑ hydraulic power unit device ﹑ ﹑ Pneumatic devices such as electro-hydraulic linkage. The most primitive and most simple is the valve hand wheel drive, handle. With the needle valve of the large-scale and automation of production processes, a variety of needle valve actuator needs more and more. Needle valve drive automation in industrial production plays an important role.

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原文来源：
http://www.1zhenxingfa.com/

2011-12-29 07:28