What is the butterfly controller?
butterfly drive valves are a remotely operated device used to open and close butterfly valves. These drivers are generally known as quarter-time drivers, as butterfly valves require only a quarter of full rotation to open or close. They are usually rotary types and have a number of energy sources, the most common are electric and hydraulic types. The range of controls of these devices is usually controlled by a set of limit switches that stop the butterfly valve driver when the valve is fully cycled. In general, they also include a protective device with an exaggerated torque designed to stop the driver if the valve is prevented.
As one of the most commonly found fluid control devices in industrial and domestic installations include butterfly valves into a family of similar devices known to a quarter turn as it requires only a quarter turn to fully open or close. These valves are located in a line with a tube and have a Namon central chamberThe center of the center is a flat, rotating plate. When the plate is turned parallel to the flow of the liquid, the valve is open and the flow unlimited. When the plate is turned at right angles to the flow, the chamber blocks and the fluid flow effectively closes the valve.
Many butterfly valves are manually controlled using a direct control wheel. Where the valves require a large amount of torque to function, they are in inaccessible locations or are dangerous to the operator, butterfly drive can be used to facilitate remote operation. These devices use an electric motor or a source of compressed hydraulic oil to turn the output shaft connected to the valve stem. Generally, hydraulic controls are used in applications such as high -pressure oil and gas lines where torque is very high. In these applications, the Ventilr butterfly can also use high -pressure gas feedDirectly from the control pipe.
The range of motion generated by the butterfly controller in each cycle is usually controlled by a set of limit switches, each for open and closed valve positions. These switches signal the drive driver to stop when the valve opens or fully closes. The control loop will usually also contain a certain type of protective device designed to stop the driver if the valve is stuck or is defended. These switches and limits prevent the controls from the excessive cycle and the damage to the self or the valve.