Transformation method for low-cost high-energy-saving power reduction running ship propulsion system
A propulsion system and power reduction technology, applied in ship construction, ship parts, hull design, etc., can solve problems such as fuel-saving effect is not obvious, propulsion system optimization, etc., to reduce marine pollution and air pollution, optimize propulsion system, improve Effect of scavenging pressure and air change quality
Active Publication Date: 2015-01-07
QUANZHOU AN SHENG SHIPPING
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However, this modification did not involve the diesel main engine, nor did it optimize the propulsion system, so the fuel saving effect is not obvious
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[0028] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.
[0029] The ship propulsion system mainly includes a diesel main engine, shafting and propeller. Since the diesel main engine and the propeller are one of the main factors affecting the ship's operating speed, the present invention optimizes the diesel main engine and the propeller on the ship, so that the diesel main engine and the propeller of the adjusted parameters The redesigned new propeller achieves the purpose of high-efficiency operation at low speeds, and can also improve efficiency and greatly reduce fuel consumption at a lower cost. Because propeller and supercharger need to be redesigned and selected in the present invention, for the convenience of description, it is called the original propeller and the original supercharger before the transformation of the ship, and the new propeller and new superc...
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The invention discloses a transformation method for a low-cost high-energy-saving power reduction running ship propulsion system. A common operating point is selected under an original rated operating point of a ship, a novel propeller is set by a conventional method according to the common operating point and the margin thereof, the common power range of a main diesel engine is selected by the conventional method according to the novel propeller, a novel supercharger is selected by the conventional method according to the common power range, and the compression ratio of an original main diesel engine of a ship is adjusted according to the novel supercharger. By redesigning the main diesel engine and the propeller of the propulsion system, the dead weight of the propeller is reduced, the propeller works in an efficient area, the rated power of the main diesel engine is adjusted as an efficient supercharger replaces an old supercharger, a marine main engine works in the efficient area, scavenging pressure and ventilation quality are greatly improved as the old supercharger is replaced, the combustion condition of diesel is improved, unit oil consumption of the diesel engine is reduced, energy is saved, and emission is reduced.
Description
technical field [0001] The invention relates to a transformation method of a ship propulsion system, in particular to a matching transformation method of a diesel main engine and a propeller of the propulsion system. Background technique [0002] The existing ship propulsion system mainly includes diesel engine, shafting and propeller. In order to improve the turnover rate of the current ocean-going container ships, the rated operating point is basically selected at a speed of 16 knots or more. However, such a speed is not necessary for domestic trade container transportation, and at this time the entire propulsion system only works below 50% of the rated working condition. According to the working principle of the diesel engine, this working area is an area where the fuel consumption rate of the diesel main engine is relatively high. In addition, the propeller is far away from the designed working point, and its working efficiency is relatively low. [0003] Since most of...
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IPC IPC(8): B63B9/00
CPCY02T70/10
Inventor 周鸿辉李炳红
Owner QUANZHOU AN SHENG SHIPPING