On a ship, a marine air compressor offers compressed air for different purposes. In fact, air compressor equipment plays an important role, and is one of the most essential appliances on a ship. These air compressors require routine maintenance and special care. Someone who lives in Norway and is considering investing in ships must be aware of the different parts of marine air compressors on ships. Gaining information on marine air compressors, will not only help you to form a good idea about ships but also, you will be in a position to maintain the ship well.
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Now, let’s inform you about the different parts of a marine air compressor.
Cylinder liner
Cylinder liner is made of graded cast iron and is covered by a water jacket around it that helps it to absorb the heat emitted during the compression process. The cylinder line is so designed that it gives a proper passage to the pressurized air and helps in achieving minimum pressure drop.
Connecting rod
The connecting rod helps to minimize the thrust that is present on the bearing surface. These connecting rods are made up of forged alloy steel.
Piston
While aluminum pistons that are light in weight are used for non-lubricating type compressors, for graded cast iron that is of lubricating type, cast iron pistons are used for sealing and removing excess oil.
Piston Rod
In big-sized compressors that are also high in capacity, pistons are attached to the piston rod that is made of steel alloy. Being fitted with a packing ring that is anti-friction, the piston rod helps to prevent compressed air leakage.
Crankshaft
The crankshaft is a component that uses counterweights for dynamic balancing and prevents twisting that happens due to the torsion force during high-speed rotation. The big bearing ends and main bearing of the counter rod are joined with the crankshaft at the journal and crank pin that are polished to elongate their lives.
Big end and main bearing
These are designed to provide resistance to the running rotational mechanism. The big end and main bearing are made of an alloy of copper lead and they have elongated operational life when they are provided with lube oil and lubrication.
Oil pump
Oil pumps are fitted with the system to provide lube oil to all bearings that can be chain or gear driven through the crankshaft. Oil pressure can be regulated with the help of the regulating screw that is present in the oil pump. To supply particle-free and clean oil to the bearings, a filter is fitted at the pump’s inlet.
Frame and crankcase
Frame and crankcase are made of rigid cast iron to accommodate all the movable parts and are rectangular.
Water pump
Water cooling pumps are fitted with some compressor with the help of the crankshaft through gear or chain. However, some compressor system operates without compressors since they are equipped to use water from the main cooling system.
Discharge and suction valve
Made of stainless-steel suction and discharge valve are used for sucking the air and discharging it from one stage to the next stage and also to the air bottle. It is important to properly assemble these valves for them to function properly.
Inter-coolers
Generally, the inter-coolers are attached between two stages to bring down the temperature of the air and also, to increase the compressor’s volumetric efficiency. While some compressor is fitted with inter-coolers, some are equipped with tubes made of copper for reducing the temperature. Also, some compressors have inter-coolers with copper tubes that are attached outside.
Suction filters
Suction filters are made of soft steel or copper and are equipped with a paper material that helps in absorbing the oil. Also, it is fitted with wire mesh that helps to prevent any dust or metal particles from entering the compression chamber.
Driving motor
A driving motor is an electrical motor that is fitted with the compressor to make it functional and it is connected to the compressor with the help of a flywheel.
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Conclusion
Now that we have come to the end of the blog, hopefully, you have got an idea about all the parts of a marine air compressor, their function and how they are fitted to the system. A ship’s air compressor machine helps by providing starting air to the main engine and multiple other machines. So, if you are someone who lives in Norway or anywhere and wants to own a ship for sale in Norway, then make sure you are aware of the different parts of a ship like the air compressor system. Information like this will help you to make a proper decision and take care of your ship properly.
