A method for mutual preheating and heating of marine diesel engine and diesel generator fresh water
A technology of diesel generators and marine diesel engines, which is applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problems of high power of electric heating units and large power consumption of ships, achieve fast warm-up speed, save ship costs, Reduce the effect of using
Active Publication Date: 2022-08-05
HUDONG ZHONGHUA SHIPBUILDINGGROUP
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Problems solved by technology
The diesel engine and diesel generator are each equipped with an electric heating unit. The power of the electric heating unit of the diesel engine is usually very large. For example, the capacity of the electric heating unit of the diesel generator whose model is MAN B&W G50ME-C9.5-TII is 110 kilowatts. Each diesel generator MAN 6L28 / 32H also needs to be equipped with a 12kW electric heating unit, but it still takes a long time to warm up the cylinder of the diesel engine. For example, it takes about 12 hours to heat fresh water from 15°C to 50°C. Therefore, the electric heating process will Consume a lot of ship power
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[0021] In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than An indication or implication that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, is not to be construed as a limitation of the invention.
[0022] This embodiment provides a diesel engine and a diesel generator fresh water preheating and heating system. When the diesel engine 1 and the diesel generator 2 are working, circulating water needs to be introduced into the interior to achieve the internal cooling ...
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The invention discloses a method for mutual preheating and heating of fresh water between a diesel engine and a diesel generator. The water in the circulation pipeline preheats the diesel generator; in step 2, the diesel generator is started, the diesel engine is turned off, the fifth fresh water circulation pipe is closed, the third fresh water circulation pipe and the fourth fresh water circulation pipe are opened; step 3 , The diesel generator is turned off, the diesel engine is started, the third fresh water circulation pipeline and the fourth fresh water circulation pipeline are closed, and the first fresh water circulation pipeline and the second fresh water circulation pipeline are opened; step 4, repeat steps 2 and 3. The method has fast preheating speed for each other, reduces the consumption of ship electric energy, and achieves the effect of energy saving.
Description
technical field [0001] The invention belongs to the technical field of ship construction, and in particular relates to a method for mutual preheating and heating of marine diesel engine and diesel generator fresh water. Background technique [0002] Before starting a diesel engine, it is usually necessary to warm up the cylinder. like figure 1 As shown, in the pipeline design, an electric heating unit is usually arranged in the external pipeline of the diesel engine. The electric heating unit heats the fresh water, and then by injecting the pre-heated fresh water into the interior of the diesel engine, the outflowing fresh water returns to the pre-heating fresh water pump. . The circulating hot fresh water makes the cylinder liner inside the diesel engine reach the temperature required by the diesel engine manufacturer, so that the diesel engine can be started. Diesel generators are the same. The diesel engine and the diesel generator are each equipped with an electric h...
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IPC IPC(8): F02N19/10F02B63/04F02B77/00
CPCF02N19/10F02B63/04F02B77/00
Inventor 薛昌奇谢春霞井雷雷施政乔岗方亮
Owner HUDONG ZHONGHUA SHIPBUILDINGGROUP