【正文】 loss of Production which inevitably results in rising unit costs. When using a Torque Limiter, which separates driving force and driven force in milliseconds and is thus fully operable after a very short period of time, consequential damages will be minimized. The price of the coupling can be considered as being relatively very low when pared to the cost of down time. 扭矩過載保護器 閥門電動裝置是用于操作閥門并于閥門相連接的裝置之一。 stem is not passed。 connections as follows: Are thrust plate。 the other is equipped with thrust plate, and this time the output torque of the valve stem through the thrust disk nut is converted to the output thrust. 3. Number of output shaft rotation circle: valve electric actuator output shaft rotation the number of laps and the valve nominal diameter, stem pitch, thread the first few related, according to M = H / ZS puting (where: M for the electrical installations should be to meet the total number of rotating ring。 consider the prevention of overload (working torque higher than the control torque) has bee essential to the occurrence of a ring. Valve electric device right choice should be based on: 1. Operation torque: Operation torque is to select the main valve electrical device parameters. The output torque electric actuator valve operation should be the greatest moment of ~ times. 2. Operation Thrust: the host structure ofMOTORIZED VALVE ACTUATOR the valve electric device, there are two, one is not configured thrust plate, this time directly to the output torque。 Z to stem the number of screw heads.) 4. Stem Diameter: For multiturn type valves for the next shot, if the electric actuator allows the maximum stem diameter of the valve stem can not be dispensed, it can not be assembled into electric valve. Therefore, the electrical device hollow output shaft diameter must be greater than specified under the valve stem diameter. For some rotary valves, as well as multiturn valves in the dark bar valve, although without considering the adoption of stem diameter, but should also take full account of the matching stem diameter and keyway size, so that work can be assembled . 5. Output Speed: valve Kai, closed fast, easy to produce water hammer phenomenon. Should therefore be under different conditions of use, choose the appropriate Kai and closing speed. 6. The installation, connection method: electric equipment installation for vertical installation, the level of the installation, floor installation。 without thrust disk。 2. Lockedrotor protection of motor thermal relay 3. Pairs of short circuit faults using fuse or overcurrent relays. Valve electric device to prevent overload of the right choice and is very much related and should pay attention to. In consideration of economic aspects limiting torques is a continuous challenge when developing Torque Limiters as an overload protection. The new generation of the backlashfree Torque Limiters. The new generation of the backlashfree Torque Limiters has been designed for being used in powertransmission and servo applications. Important requirements such as being backlashfree, short reaction times and long service life have been further optimized. The constructive benefit is ensured through fast availability of applications after a crash. For limited installations The further development and optimization of the already well established backlashfree Torque Limiter series SK has brought about an appropriate design for eac