Sunday, December 1, 2013
Engine Structure Rt flex 50
Engine Structure Rt flex 50
Wärtsilä RT-fl ex50 engines have a wellproven
type of structure, with a ‘gondola’-type
bedplate surmounted by very rigid, A-shaped
double-walled columns and cylinder block,
all secured by pre-tensioned vertical tie rods.
The whole structure is very sturdy with low
stresses and high stiffness. Both bedplate and
columns are welded fabrications which are
also designed for minimum machining.
A high structural rigidity is of major
importance for the today’s two-stroke engine’s
long stroke. Accordingly the design is based on
extensive stress and deformation calculations
carried out by using a full three-dimensional
fi nite-element computer model for different
column designs to verify the optimum frame
confi guration.
The double-walled column has thick guide
rails for greater rigidity under crosshead shoe
forces. The RT-fl ex supply unit is carried on
supports on one side of the column and the
scavenge air receiver on the other side of the
cylinder jacket. Access to the piston underside
is normally from the supply unit side, but
is also possible from the receiver side of the
engine, to allow for maintenance of the piston
rod gland and also for inspecting piston rings.
The cylinder jacket is a single-piece castiron
cylinder block with a high rigidity. The
cylinder liners are seated in the cylinder block,
and are sufficiently robust to carry the cylinder
covers without requiring a support ring. A light
sleeve is applied to upper part of each liner to
form a water jacket.
The tilting-pad thrust bearing is integrated
in the bedplate. Owing to the use of gear
wheels for the supply unit drive, the thrust
bearing can be very short and very stiff, and
can be carried in a closed, rigid housing.
Wärtsilä RT-fl ex50 engines have a wellproven
type of structure, with a ‘gondola’-type
bedplate surmounted by very rigid, A-shaped
double-walled columns and cylinder block,
all secured by pre-tensioned vertical tie rods.
The whole structure is very sturdy with low
stresses and high stiffness. Both bedplate and
columns are welded fabrications which are
also designed for minimum machining.
A high structural rigidity is of major
importance for the today’s two-stroke engine’s
long stroke. Accordingly the design is based on
extensive stress and deformation calculations
carried out by using a full three-dimensional
fi nite-element computer model for different
column designs to verify the optimum frame
confi guration.
The double-walled column has thick guide
rails for greater rigidity under crosshead shoe
forces. The RT-fl ex supply unit is carried on
supports on one side of the column and the
scavenge air receiver on the other side of the
cylinder jacket. Access to the piston underside
is normally from the supply unit side, but
is also possible from the receiver side of the
engine, to allow for maintenance of the piston
rod gland and also for inspecting piston rings.
The cylinder jacket is a single-piece castiron
cylinder block with a high rigidity. The
cylinder liners are seated in the cylinder block,
and are sufficiently robust to carry the cylinder
covers without requiring a support ring. A light
sleeve is applied to upper part of each liner to
form a water jacket.
The tilting-pad thrust bearing is integrated
in the bedplate. Owing to the use of gear
wheels for the supply unit drive, the thrust
bearing can be very short and very stiff, and
can be carried in a closed, rigid housing.
precautions involved in running with Sulzer RT flex
1. What are the precautions involved in running with RT flex
Reliability and safety has the utmost priority
in the common rail RT-flex system.
v
The
duplicated high-pressure delivery pipes have stop cocks at both ends to isolate
any failed pipe. Each single pipe is adequate for the full delivery. All high
pressure pipes are double-walled for safety.
v
Every
injection nozzle is independently monitored and controlled by the WECS. In case
of difficulties, such as a broken high pressure line or a malfunctioning
injector, the affected injection valve can be cut out individually without
losing the entire cylinder.
v
If
the stroke measuring sensor fails, the WECS system switches the ICU to a pure
time control and triggers the signal based on the timing of the neighbouring
cylinders.
What is MSDS of fuel oil
Material Safety Data Sheet for Fuel oil
SECTION 1. PRODUCT AND COMPANY IDENTIFICATION
Product name : Fuel Oil
Synonyms : Bunkers, Black Fuel Oil, MFO, Industrial Fuel Oil, 6 Oil, Slurry Fuel Oil, RFO,
Refinery Fuel Oil, High Sulfur Fuel Oil, HSFO, IFO-30, IFO-180, IFO-380, IFO-
510, Bunker Fuel Oil, Marine Fuel Oil, Decant Oil, LSFO,
MSDS Number :
Product Use Description : Fuel,
Company :
SECTION 1. PRODUCT AND COMPANY IDENTIFICATION
Product name : Fuel Oil
Synonyms : Bunkers, Black Fuel Oil, MFO, Industrial Fuel Oil, 6 Oil, Slurry Fuel Oil, RFO,
Refinery Fuel Oil, High Sulfur Fuel Oil, HSFO, IFO-30, IFO-180, IFO-380, IFO-
510, Bunker Fuel Oil, Marine Fuel Oil, Decant Oil, LSFO,
MSDS Number :
Product Use Description : Fuel,
Company :
SECTION 2. HAZARDS IDENTIFICATION
Emergency Overview
Regulatory status : This material is considered hazardous by the Occupational Safety and Health
Administration
Signal Word : WARNING
Hazard Summary
Potential Health Effects
EYE:
SKIN:
INGESTION:
INHALATION:
Chronic Exposure:
SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS
Clarified oils (petroleum),
catalytic cracked;
Heavy Fuel oil
Polycyclic aromatic compounds (PACs or PNAs)
Benzo[a]pyrene;
Benzo[def]chrysene
Hydrogen Sulfide
SulfuR
SECTION 4. FIRST AID MEASURES
Eye contact:
Skin contact
Inhalation
SECTION 5. FIRE-FIGHTING MEASURES
Form : Liquid
Flash point : 65.5°C (150°F) Minimum
Suitable extinguishing media : Carbon dioxide (CO2), Water spray
Special protective equipment :
for fire-fighters
Specific hazards during fire
fighting
SECTION 6. ACCIDENTAL RELEASE MEASURES
Personal precautions
Environmental precautions
Methods for cleaning up
SECTION 7. HANDLING AND STORAGE
SECTION 8. EXPOSURE CONTROLS / PERSONAL PROTECTION
SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES
Colour : dark brown
Form : Liquid
SECTION 10. STABILITY AND REACTIVITY
SECTION 11. TOXICOLOGICAL INFORMATION
SECTION 12. ECOLOGICAL INFORMATION
SECTION 13. DISPOSAL CONSIDERATIONS
SECTION 14. TRANSPORT INFORMATION
What is the Rocking Test?
It is a test which is carried out to find, wear down of the
sleeve bearing of the deck crane on ships.
this measures the play (or relative movement) between the inner
and outer bearing race, to give an indication of the wear taking place.
(Wear down of the sleeve bearing can be found by analysing the grease sample.
The metal content of the sample may give indication of wear down.)
The Rocking Test need to be carried out according to manufacturer
recommendation
Measurements are typically taken in four positions on
the slew bearing, with the jib pointing:
• forward to the ship
• starboard
• aft
• port side.
Neither a load nor any cargo handling equipment should be attached to the hook.
It is important for the same positions to be marked as a datum reference..
sleeve bearing of the deck crane on ships.
this measures the play (or relative movement) between the inner
and outer bearing race, to give an indication of the wear taking place.
(Wear down of the sleeve bearing can be found by analysing the grease sample.
The metal content of the sample may give indication of wear down.)
The Rocking Test need to be carried out according to manufacturer
recommendation
Measurements are typically taken in four positions on
the slew bearing, with the jib pointing:
• forward to the ship
• starboard
• aft
• port side.
Neither a load nor any cargo handling equipment should be attached to the hook.
It is important for the same positions to be marked as a datum reference..
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