Solenoid Valve How It Works (+VIDEO)
What is a
Solenoid Valve?
A solenoid
valve is an electromechanical device used for controlling liquid or gas flow.
The solenid valve is controlled by electrical current, which is run through a
coil. When the coil is energized, a magnetic field is created, causing a
plunger inside the coil to move. Depending on the design of the valve, the
plunger will either open solenoid valve pictureor close the valve. When
electrical current is removed from the coil, the valve will return to its
de-energized state.
In
direct-acting solenoid valves, the plunger directly opens and closes an orifice
inside the valve. In pilot-operated valves (also called the servo-type), the
plunger opens and closes a pilot orifice. The inletline pressure, which is led
through the pilot orifice, opens and closes the valve seal.
The most
common solenoid valve has two ports: an inlet port and an outlet port. Advanced
desigs may have three or more ports. Some designs utilize a manifold-type
design.
Solenoid
valves make automation of fluid and gas control possible. Modern solenoid
valves offer fast operation, high reliability, long service life, and compact
design.
What are
the different parts of a solenoid valve?
The
illustration below depicts the basic components of a solenoid valve. The valve
shown in the picture is a normally-closed, direct-acting valve. This type of
solenoid valve has the most simple and easy to understand principle of
operation.
How does a
solenoid valve work?
The media
controlled by the solenoid valve enters the valve through the inlet port (Part
2 in the illustration above). The media must flow through the orifice (9)
before continuing into the outlet port (3). The orifice is closed and opened by
the plunger (7).
The valve
pictured above is a normally-closed solenoid valve. Normally-closed valves use
a spring (8) which presses the plunger tip against the opening of the orifice.
The sealing material at the tip of the plunger keeps the media from entering
the orifice, until the plunger is lifted up by an electromagnetic field created
by the coil.
See you soon. Javier Copelnad
Post A Comment
No hay comentarios :