Governor
A governor, or speed limiter or controller, is a device used to
measure and regulate the speed of a machine, such as an engine.
Other Applications - Turbine Controls
Operation of a flyball governor to control speeds of a water
turbine
In steam turbines, the steam turbine governing is the procedure of
monitoring and controlling the flow rate of steam into the turbine
with the objective of maintaining its speed of rotation as
constant. The flow rate of steam is monitored and controlled by
interposing valves between the boiler and the turbine.
In water turbines, governors have been used since the mid-19th
century to control their speed. A typical system would use a
Flyball governor acting directly on the turbine input valve or the
wicket gate to control the amount of water entering the turbine. By
1930, mechanical governors started to use PID controllers for more
precise control. In the later part of the twentieth century,
electronic governors and digital systems started to replace
mechanical governors.
Machines Applicable:
We provide governor for basically all high speed packing machines
while the one in photos is for GDX2 cigarette packer.
Function:
Electrical generator - droop speed control
For electrical generation on synchronous electrical grids prime
mover's drive electrical generators which are electrically coupled
to any other generators on the grid. With droop speed control, the
frequency of the entire grid determines the fuel delivered to each
generator, so that if the grid runs faster, the fuel is reduced to
each generator by its governor to limit the speed.
Droop speed control:
Droop speed control is a control mode used for AC electrical power
generators, whereby the power output of a generator reduces as the
line frequency increases. It is commonly used as the speed control
mode of the governor of a prime mover driving a synchronous
generator connected to an electrical grid. It works by controlling
the rate of power produced by the prime mover according to the grid
frequency. With droop speed control, when the grid is operating at
maximum operating frequency, the prime mover's power is reduced to
zero, and when the grid is at minimum operating frequency, the
power is set to 100%, and intermediate values at other operating
frequencies.
Mechanism:
In practice, the droop curves that are used by generators on large
electrical grids are not necessarily linear or the same, and may be
adjusted by operators. This permits the ratio of power used to vary
depending on load, so for example, base load generators will
generate a larger proportion at low demand. Stability requires that
over the operating frequency range the power output is a
monotonically decreasing function of frequency.
Droop speed control can also be used by grid storage systems. With
droop speed control those systems will remove energy from the grid
at higher than average frequencies, and supply it at lower
frequencies.
Features:
Low heat
Smooth operation
Acid-resistance
Surface strengthened
Hardened
Rust-proof
Anti rust
Anti corrosion
Corrosion proof
Hard and tough
High performance
Brand new
Long functional life
Reliable
High temperature tolerance
High fracture strength
Stainless
Port of Departure:
For goods of lesser amount and weight, or goods we have in stock,
usually they get loaded on board via Guangzhou custom. That is, if
you order several pieces of machine accessories of regular
specifications, more likely than not your cargo will depart from
Guangzhou custom.
For larger orders, unless requested otherwise, shipments will set
sail from the nearest port of the manufacturing plant(s). Our
plants locates mostly in mainland China, while our suppliers
worldwide. So it is possible you will have cargoes from any port of
mainland China, India, Laos or even Europe.
