midterms part 2 page 17-21 Flashcards
Provides rotational energy to the driven equipment.
DRIVER
example of driver
electric motors
connects Driver to the Driven equipment
connector
example of connector
-Couplings
-Belts
-Chains
-Gear boxes
it is the output
DRIVEN EQUIPMENT
example of driven equipment
-Fans
-Compressors
-Pump
also referred to as degradation mechanisms
Damage Mechanisms
is a general term referring to any cause of problems or failures within process equipment. These can range from corrosion, to cracking, to heat damage, and everything in between.
Damage Mechanisms
a specialized device engineered to regulate the flow of fluid in process piping
systems.
valve
There are two types by which valves can be operated:
-Manually
-Using Actuator
Valves are installed on equipment to perform the following functions:
- Starting/Stopping of fluid flow.
- Controlling the amount of fluid flow.
- Controlling the direction of fluid flow and preventing backflow.
- Regulating the downstream system or process pressure.
The different types of actuators
pneumatic, hydraulic, electric, etc.
feature a convex disc-shaped plug that is raised and lowered through a
rising stem within the spherical interior of the globe-shaped body.
Globe valves
utilize a disc-like gate that moves vertically, operated by a screwed stem
and handwheel.
Gate valves
The fluid’s path through the valve is distinctively _______..
causing the flow direction to
change twice, leading to a higher pressure drop.
S-shaped
utilize a ball-shaped obstructor held in place between two cup-shaped
seals.
ball valves
Commonly used for system shut-off or isolation, these valves are tailored to function either fully open or fully closed.
By simply rotating the globe 90 degrees using a lever,
the valve can be closed or opened.
ball valves
ensures both precise flow control and a tight seal when fully closed.
spherical design of the plug
A valve commonly used for throttling and on-off service
butterfly valve
The body of this type of valve is relatively small compared to other valves, and therefore it occupies much less space in a pipeline.
butterfly valve
designed to respond automatically to sudden increases in pressure.
relief valves
opens at a predetermined pressure.
relief valves
a disc is held in place by a spring that will not open until system
pressure exceeds its operating limits. Tremendous pressures can be generated in
process units.
relief valves
is a device that adjusts how fluids move in an industrial system.
control valve