Air bottle or Air receiver mountings

• The high pressurised air is used for initial starting of the marine I.C engines.

• It also supply control air to the marine engines.

• Service air is supplied from the air bottle.

• If the quick closing valves are air operated, safety air is supplied through air bottle.

• Spring air for exhaust valve is supplied through air bottle.

What are the Air Bottle Mountings and Connections?

The general mountings and connection present on air bottle of a ship are:-

• Filling valve:- This is a valve fitted in the supply connection from main air compressor to the air bottle.

• Outlet to Main engine:- An outlet valve and pipe is fitted for connection from air bottle to main engine for supplying air during starting.

• Outlet to auxiliary engine:- An outlet valve and pipe is fitted for connection from air bottle to auxiliary engine for supplying air during starting.

• Auxiliary connection:- Other auxiliary supplies connections such as service air, safety air etc. is also provided with isolating valve.

• Relief valve:- A relief valve is fitted on the air bottle to relieve excess pressure inside the bottle.

• Drain valve:- A drain valve is fitted at the bottom of the bottle to drain accumulated condensate from the receiver.

• Fusible plug:-  A fusible plug is fitted in the bottle with a separate connection leading out of the engine room so that in the event of fire, this plug will melt and relieve all the air to the outside atmosphere.

• Manhole door:-  A manhole door is fitted in the bottle to carry out inspection of the same.

References:-

Book on Marine Aux. Machinery by H.D.McGeorge