Design method of hydraulic pipelines in box section

Abstract

The invention belongs to the field of airplane structure design, and discloses a design method of hydraulic pipelines in a box section. The design method comprises the steps: the multiple system pipelines are fixed to a bracket through a plurality of hoops, and thus the pipelines and the bracket are connected into a whole and then loaded into the closed box section together; the profile of the bracket is designed into a shape of a panel, a groove or omega according to demands for rigidity of the bracket; the number and positions of the hoops are determined according to arrangement requirementsof the pipelines; the bracket is designed to be equal in height or to be in a wedge shape in the length direction; and the bracket is fixed to a box section structure by mounting a plurality of fasteners on a web. After demounting, the pipelines can be overhauled and replaced in an open space, and thus the maintaining efficiency of the system pipelines is improved; after the pipelines leak, leaking hydraulic oil liquid is gathered on the surface of the bracket and flows out of the box section along the bracket so that a maintainer can find hydraulic leakage as soon as possible during daily inspection; and the leaking oil liquid does not pollute the structure, after the bracket is dismounted, cleaning can be conducted to avoid corrosion, and the service life of a mechanism is prolonged.

Description

technical field [0001] The invention belongs to the field of aircraft structure design, and in particular relates to a design method for a hydraulic pipeline inside a box section. Background technique [0002] Hydraulic control is the most important control mode of the current aircraft. In order to provide a power source for the control components, a large number of hydraulic pipelines need to be laid in the aircraft body structure, and some of the pipelines inevitably need to be installed inside the tail box structure. Most existing aircraft directly fix the pipelines on the body structure through clamps, and the tail box section is usually a closed structure, which causes inconvenience to the inspection, maintenance and replacement of the pipelines inside the body box section. [0003] On the one hand, pipeline maintenance requires a large number of construction access holes on the body structure. During maintenance, through the maintenance access holes, the clamps that f...

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Problems solved by technology

[0004] On the other hand, it is often difficult to detect the leakage of the hydraulic pipeline in the closed space. Once the leakage occurs, the hydraulic oil directly adheres to the internal structure surface of the box section, which is not easy to clean, pollutes the structure surface, and affects the service life of the body structure

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