A double-valve type fuel oil radiator for lubricating oil filter

Abstract

The invention discloses an oil filter double valve type fuel oil radiator, and belongs to the technical field of aero engine lubrication transmission systems. The oil filter double valve type fuel oilradiator comprises a fuel oil heat exchanger b and an oil control assembly, a fuel inlet b and a fuel outlet b are formed in the two ends of the fuel oil heat exchanger b correspondingly, the oil control assembly is connected to the lower end of the fuel oil heat exchanger b, an oil inlet b and an oil outlet b are formed in the two ends of the oil control assembly correspondingly, and the oil control assembly is internally provided with a heat exchanger oil safety valve b and an oil filter double valve assembly. According to the technical scheme, the oil filter double valve assembly is arranged at the oil outlet end of the oil control assembly, and an anti-siphon valve and an oil filter safety valve are arranged in the oil filter double valve assembly, so that the occurrence of oil loss caused by siphon phenomenon is effectively avoided; and meanwhile, the oil filter double valve assembly and an oil blocking cover are arranged into one assembly, the disassembly and connection of a pipeline are avoided, the disassembly and assembly procedures are reduced, and the maintenance work intensity is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of lubricating and driving systems of aero-engines, and relates to a fuel oil heat exchanger structure. Background technique [0002] The fuel oil radiator is a key component of the aero-engine lubricating transmission system. It uses aircraft fuel as a cold source to cool the circulating lubricating oil of the engine lubricating transmission system to ensure that the engine lubricating oil is at a good working temperature. Part of the fuel heated by the lubricating oil enters the combustion chamber of the engine to provide power for the engine, and part of it returns to the aircraft fuel tank. [0003] According to the heat exchanger structure, the engine fuel oil radiator can be divided into tube-belt type, column-tube type, plate-fin type, etc. Taking the traditional shell and tube fuel oil radiator as an example, such as figure 1 As shown, the structural design of the radiator generally includes fuel i...

AI Technical Summary

Problems solved by technology

[0004] The above design only considers the blockage of the heat exchanger core during use, so the radiator fuel safety valve a2 and the radiator lubricating oil safety valve a5 are designed, and the filter and filter safety valve are generally used as separate accessories. design and management

[0005] However, the number of hours of use of aero-engines is limited, especially for some special types of engines, which generally need to be overhauled after 300-1000 hours of use, and the oil filter maintenance time is more frequent. Every time a new engine is used for about 50 hours, it must be overhauled. The fuel filter and filter safety valve are removed for cleaning. During the maintenance process, due to the many accessories and complicated pipelines, the disassembly time is long and the work intensity is high; during the disassembly process, the residual fluid in the accessories will be Pollution to other engine accessories

[0006] The fuel oil radiator is generally installed at the lower end of the engine. After the engine is turned off, the lubricating oil in the system may be lost under the siphon force of the lubricating oil at the outlet of the radiator, resulting in a waste of circulating lubricating oil.

[0007] Some aero engines designed for special purposes, such as turbojet and turbofan jet engines with a thrust of 200kg and 500kg, have external installation pipelines for systems and components, which makes the engine volume and installation space larger, and engine maintenance is difficult bigger

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