Sea/fresh water heat exchange system of marine water cooling diesel engine and heat exchange method

Abstract

The invention discloses a sea / fresh water heat exchange system of a marine water cooling diesel engine and a heat exchange method. The sea / fresh water heat exchange system of the marine water cooling diesel engine comprises a sea / fresh water heat exchanger, an exchanger bracket, an exchanger water outlet pipe, an exchanger water pump connecting pipe, a small circulating pipe, a small circulating pipe joint, a water cooling exhaust pipe, a thermostat cover, an exchanger water inlet pipe, an engine water outlet pipe, and an exhaust pipe water inlet pipe. The invention provides the sea / fresh water heat exchange system of the marine water cooling diesel engine; and the system can lower the exhaust temperature to keep the temperature needed by engine operation, so that the cabin temperature is kept at a lower level.

Description

technical field [0001] The invention relates to a matching marine diesel engine and sea and fresh water heat exchange system, in particular to a sea and fresh water heat exchange system for a marine water-cooled diesel engine. Background technique [0002] Due to its advantages of large power range, high efficiency, low energy consumption, and convenient use and maintenance, diesel engines have a very broad market in civil ships and small and medium-sized naval propulsion devices. However, since the movement routes of ships and warships are on the sea, the supporting marine diesel engine also has its own particularity. If the supporting engineering machinery or automobile diesel engine is used directly, there will be many disadvantages. [0003] (1) If the marine engine is placed in the cabin, the ordinary radiator cannot have a good heat dissipation effect, which will cause the engine to overheat and affect the engine power. [0004] (2) During the use of the diesel engine...

AI Technical Summary

Problems solved by technology

However, since the movement routes of ships and warships are on the sea, the supporting marine diesel engine has its own particularity. If the supporting construction machinery or automobile diesel engine is directly used, there will be many disadvantages

[0003] (1) If the marine engine is placed in the cabin, the ordinary radiator cannot have a good heat dissipation effect, which will cause the engine to overheat and affect the engine power

[0004] (2) During the use of diesel engines, the exhaust temperature is very high, up to 500°C. If the temperature is not cooled, the temperature in the cabin will be too high. For small cabins, it will also cause certain safety hazards

[0005] (3) Seawater is corrosive to a certain extent, so seawater cannot be used as cooling water for diesel engines

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