A device for preventing fuel from intruding into the airborne hydraulic system

Abstract

The invention discloses a device for preventing fuel from invading an airborne hydraulic system, and belongs to the technical field of aviation fuel. The device comprises a valve seat (1), springs (2), valve elements (3), a shell (4) and a jacking rod (5), wherein the valve seat is sleeved with the shell, an annular cavity is formed between the shell and the outer wall of the valve seat, the shellfurther comprises a first fuel hole, and the first fuel hole communicates with a fuel delivering pipeline of the valve seat; the springs are arranged in the annular cavity; the valve elements are arranged at the ends of the fuel delivering pipeline in a sleeving mode and make contact with the springs, a second fuel hole is limited by the valve elements, and the second fuel hole and the first fuelhole can be staggered when the valve elements compress the springs; and the jacking rod is used for tightly jacking the valve elements. According to the device for preventing the fuel from invading the airborne hydraulic system, the working characteristics of the hydraulic system are utilized to achieve the purpose of preventing the fuel from invading the hydraulic system, the situation that thefuel invades the airborne hydraulic and user system, and consequently, a large amount of complicated cleaning work needs to be conducted is avoided, and a lot of time and cost are saved.

Description

technical field [0001] The invention belongs to the technical field of aviation fuel, and in particular relates to a device for preventing fuel from intruding into an airborne hydraulic system. Background technique [0002] As a secondary energy source, the hydraulic system is one of the indispensable airborne systems of modern aircraft. Whether it is a small fighter jet, a large transport aircraft or a civilian airliner, it is equipped with a complete hydraulic system. [0003] For the aircraft hydraulic system, it is necessary to create favorable heat dissipation conditions, and the fuel-hydraulic oil radiator is undoubtedly an efficient heat dissipation device. The fuel-hydraulic oil radiator is submerged in the wing fuel tank, the fuel is used as the cold side, and the hydraulic oil is used as the hot side to dissipate heat for the hydraulic system through heat conduction. At the same time, the fuel is heated so that its combustion efficiency is higher. [0004] In addi...

AI Technical Summary

Problems solved by technology

Because the hydraulic components are particularly sensitive to intrusive pollutants from the outside, after the aircraft lands, all hydraulic components of the hydraulic system and the user system must be removed and cleaned one by one repeatedly. The cleaning work is very time-consuming and costly. Secondary pollution, for this reason, GJB 3058, ARP 5376, etc. have strict regulations on the acceptance level and control level of pollution degree after cleaning

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