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Auxiliary engines презентация
Содержание
- 1. Auxiliary engines
- 2. Marine Pumps Reciprocating pump (double-acting piston pump)
- 3. NON-RETURN VALVES Delivery lines and discharge lines
- 4. Double-acting displacement pump
- 5. sound DOUBLE-ACTING DISPLACEMENT PUMP The double acting
- 6. The volumes of the pump
- 7. discharge valve 1 is closed
- 8. discharge valve 2 is closed by suction;
- 9. Gearwheel pump
- 10. The liquid enters the pump-housing on the suction side.
- 11. GEARWHEEL PUMP s The liquid is carried
- 12. The liquid is discharged through
- 13. Centrifugal pump
- 14. CENTRIFUGAL PUMP The liquid enters
- 15. The rotating impeller causes a centrifugal force. CENTRIFUGAL PUMP
- 16. The liquid is
- 17. The Anchor Winch shafts band brakes gearwheels warping drums cable lifters dog clutches
- 18. THE ANCHOR WINCH The anchor winch, or
- 19. ANCHOR WINCH SHAFTS Driving shaft Intermediate shaft Main shaft. sound
- 20. s DRIVING SHAFT An electric
- 21. INTERMEDIATE SHAFT At the extremities of
- 22. THE MAIN SHAFT The main shaft
- 23. CABLE LIFTERS The anchor chain is wound around the cable lifter. sound
- 24. BAND BRAKE Band brakes control the dropping speed of the anchor. sound
- 25. GEARWHEELS AND DOG CLUTCHES Main gearwheels
- 26. s the steering engine
- 28. sound The rudderstock goes through the ruddertrunk. Ruddertrunk
- 29. By turning the steering wheel on the
- 30. Exhaust gas boilers s
- 31. The exhaust gas boiler (or waste heat
- 32. Exhaust gases enter the boiler through the
- 33. Water turns to steam, which is used
- 34. In a composite boiler the generation of
- 35. s Generators and Electric motors
- 36. sound A generator produces either alternating
- 37. Alternating current changes polarity about 50 times
- 38. sound A transformer increases the voltage (step-up)
- 39. . The compound motor is
- 40. sound The compound motor combines the
- 41. sound sound The advantage of the a-synchronous
- 42. sound sound THE SYNCHRONOUS MOTOR. The advantages
- 43. C P.C. van Kluijven SHIPPING AND TRANSPORT COLLEGE ROTTERDAM
Marine Pumps Reciprocating pump (double-acting piston pump) Gearwheel pump Centrifugal pump
Слайд 3NON-RETURN VALVES
Delivery lines and discharge lines
to and from the pump are
often fitted with
non-return valves
to prevent the liquid from flowing back.
non-return valves
to prevent the liquid from flowing back.
sound
Слайд 5sound
DOUBLE-ACTING DISPLACEMENT PUMP
The double acting
displacement pump
has a simultaneous
suction action
and
discharge action.
valve chest
Слайд 6 The volumes of the
pump chambers
are increased and
decreased
by the
reciprocating motion
of the piston (1).
reciprocating motion
of the piston (1).
1
DOUBLE-ACTING DISPLACEMENT PUMP
valve chest
Слайд 7
discharge valve 1
is closed by
suction;
suction valve 1
is opened by suction.
discharge valve
2
is opened by the
pressure of the
liquid;
suction valve 2
is closed.
is opened by the
pressure of the
liquid;
suction valve 2
is closed.
PISTON GOES DOWN:
Слайд 8discharge valve 2
is closed by
suction;
suction valve 2
is opened by
suction.
discharge valve
1
is opened by
pressure;
suction valve 1
is closed by pressure.
is opened by
pressure;
suction valve 1
is closed by pressure.
PISTON GOES UP:
Слайд 18THE ANCHOR WINCH
The anchor winch,
or windlass,
is used to drop
and heave in
the
anchor through the hawse pipe;
the anchor chain is stored in the
chain locker.
the anchor chain is stored in the
chain locker.
s
Слайд 20s
DRIVING SHAFT
An electric motor
(or electric-hydraulic
motor)
drives the primary shaft (driving
shaft).
Слайд 21INTERMEDIATE SHAFT
At the extremities
of the
intermediate shaft
are the warping drums.
Warping drums
are used to heave the lines tight;
they are also used for shifting berth.
they are also used for shifting berth.
sound
Слайд 25GEARWHEELS AND
DOG CLUTCHES
Main gearwheels
can be shifted to
port or starboard.
sound
Dog clutches
engage
the cable lifters.
the cable lifters.
Слайд 27
THE STEERING ENGINE
The steering engine
is a
remote controlled
electrically or
hydraulically driven
telemotor.
sound
Слайд 29By turning the
steering wheel on the bridge
the hydraulic pressure is built
up. This moves the rams in the cylinders.
sound
Слайд 31The exhaust gas boiler
(or waste heat boiler)
consists of a welded
vertical
cylinder
with a hemispherical top.
with a hemispherical top.
sound
Слайд 32Exhaust gases enter the boiler through the exhaust gas inlet;
Exhaust gases
heat up
banks of tubes, which
heat up the water;
The exhaust gases
leave the boiler through the exhaust gas outlet.
banks of tubes, which
heat up the water;
The exhaust gases
leave the boiler through the exhaust gas outlet.
Слайд 33Water turns to steam,
which is used to produce energy for heating
purposes, or even for driving auxiliaries.
STEAM
Firebricks protect the
boiler shell against damage.
Firebricks also prevent
heat loss.
Слайд 34In a composite boiler
the generation of steam can be maintained
by oil
firing
when the idle engine does not produce any exhaust gases.
when the idle engine does not produce any exhaust gases.
Oil-fire
uptake
Слайд 36sound
A generator produces either
alternating current (A/C) or
direct current (D/C).
THE GENERATOR
Слайд 37Alternating current changes polarity about 50 times a second. A/C is
used for lighting and to drive auxiliary engines.
Direct current doesn’t change polarity,
but travels in one direction.
A converter changes
A/C into D/C.
+ -
+ -
Слайд 38sound
A transformer increases the voltage
(step-up)
or reduces the voltage
(step-down)
THE TRANSFORMER
Слайд 39. The compound motor
is a combination of a
shunt motor and a
series motor.
series motor.
. The synchronous motor
has carbon brushes that
require a lot of
maintenance.
. The a- synchronous motor
does not have vulnerable
carbon brushes.
ELECTRIC MOTORS
Слайд 40sound
The compound motor
combines the
advantages of the
shunt motor and
series motor:
it has a
constant speed
and a
high starting torque.
THE COMPOUND ELECTRIC MOTOR
Слайд 41sound
sound
The advantage of the
a-synchronous motor
is, that it doesn’t have
carbon brushes and
coils.
THE A-SYNCHRONOUS MOTOR.
The disadvantages of
the a-synchronous motor
are, that it requires much
initial current and
it produces a
low starting-torque.
Слайд 42sound
sound
THE SYNCHRONOUS MOTOR.
The advantages of
the synchronous motor
are, that it requires
little initial current and
it produces a
high starting-torque.
The disadvantages of
the synchronous motor
are the maintenance it
requires, and its price.
