Home 

Ref-Wiki.com -

Technical information Industrial Solenoid Valves

Solenoid Valves

Solenoid valves are automatically controlled two-position valves used in refrigerant, water and brine systems. Solenoid valves with electric control, consisting of coils of insulated copper wire around moving the anchor, which is connected to the plug / socket connector. When an electric current passes through the coil, it generates an electromagnetic field that attracts valves in the heart of spools, cops, causing the fork to move with respect to the saddle. The movement of the frame can make a full flow or no flow, depending on the design of the valve.

Most solenoid valves are designed for installation with their coil in the vertical plane. This position allows gravity to help spring in return valve in starting position when the coil is de-energized. Other solenoid valves are designed for installation in any position. These units are to provide valid orientation relative to the coil. All valve bodies, in addition, in accordance with the direction of flow of cast or pressed to his side. If the valve is installed widi flow going in the opposite direction, valve plug may not be able to open and close properly.

This is because the forces created by the flowing fluid does not apply to the correct side of the plug connector.

Automatic valves, which are transferred in the wrong direction can be identified by a chattering noise diey do. If the valve solenoid valve in the valve gets stuck and unable to move the spool when the voltage on the coil will overheat. This is because the coil unable to generate the necessary counter electromotive force, if the frame can not move in the queue and communication lines of magnetic force. Therefore, when replacing the coil, overheated to the point of destruction, the entire valve is usually replaced.

Although there are a number of mechanical vibrations, electromagnetic valves are two main types of direct action and pilot management. Small solenoid valves similar constructions, direct action, and that means that die valve opens and closes the valve plug die against the refrigerant flowing through the die port. More solenoid valves, pilot operated, indicating that the valve opens and closes the small pilot port not lifting of the main anchors. Pilot port uses fluid pressure in the system to open and close the main stream port valve. When the coil pilot operated solenoid is energized, the armature is immersed die, spools, cops by the electromagnetic field. Tliis pilot opens the port labeled, releasing the pressure acting on the top of the main piston. This action produces a pressure imbalance between the piston. The higher the pressure acting on the bottom of the piston makes it go up, opening the main port of the valve. When the coil is de-energized, fittings falls, closing the pilot canal. The pressure directly built on top of the main cylinder, pushing it down and closing the main port in die valve.

The size of the solenoid valve detennined desired flow, differential pressure across the valve is in full flow, and the maximum allowable pressure drop through the port. This is not selectea size could not move properly plug, preventing tightly-off...

 
Thanks ->



Air washer Wikipedia Automatic expansion valve Cooling tower Cross charge sensing bulb Current magnetic relay Effect of moisture in refrigeration system Furnace ladder diagram Psychrometric chart R22a pressure temperature chart Thermal electric expansion valve Types of intercoolers Vrf system Water cooler mechanism
Copyright @ 2009 - 2022, "www.ref-wiki.com"