Ship main engine, namely ship power plant, is the machinery that provides power for all kinds of ships. Marine main engines can be divided into steam engines, internal combustion engines, nuclear engines and electric motors according to the nature of the fuel used, the place of combustion, the working medium used and its working mode.
The main engine and its auxiliary equipment, which provide propulsion power for the ship, are the heart of the ship. The main power unit is named after the main engine type. At present, the main engine is mainly steam engine, steam turbine, diesel engine, gas turbine and nuclear power plant and other five categories. The main engine of modern transport ships is mainly diesel engine, which has an absolute advantage in quantity. Steam engines once played an important role in the development of ships, but at present they are almost completely obsolete. Steam turbines have long been dominant on high-power ships, but they are increasingly being replaced by diesel engines. Gas turbines and nuclear power plants have only been tried on a few ships and have not been popularized.
With the continuous improvement of the performance of the transport ship, the ship’s auxiliary machinery and equipment are increasingly complex, the most basic are: (1) the steering gear, windlass, cargo winch and other auxiliary machinery. These machines are powered by steam on steam boats, first by electricity on diesel boats, and now, in most cases, by hydraulics. ② all kinds of piping system. Such as the supply of seawater and fresh water for the whole ship; Ballast water system for regulating ship ballast; Bilge drainage system for the removal of bilge water; Compressed air systems for the supply of compressed air to the whole ship; Fire fighting systems for extinguishing fires, etc. The equipment used in these systems, such as pumps and compressors, is largely electric and can be controlled automatically. (3) Heating, air conditioning, ventilation, refrigeration and other systems for the life of the crew and passengers. These systems can generally be adjusted and controlled automatically.
Post time: Jun-15-2021