Assembly sealing ring of transitional section of aircraft engine and manufacturing and assembling method

Abstract

The invention provides an assembly sealing ring of a transitional section of an aircraft engine and a manufacturing and assembling method and relates to a rubber sealing product and a manufacturing and assembling method. The technical scheme that techniques of designing, manufacturing and assembling of a rubber sealing ring body are combined is adopted; and three sections of rubber sealing strip butt joints, with V-shaped cross sections and longitudinal radians being consistent with the radian of the curved surface of the outer cylindrical wall of the transitional section, of a cloth-insert framework layer of the sealing ring adhere to the outer cylindrical wall for secondary clamping and fixing. The cloth-insert framework layer is a polyester fiber cloth. The rubber is the saturated butyronitrile rubber. Each butt joint is a ring-shaped sealing ring formed through two-time sulfuration cross-linking of the transitional section and a butt joint thin clamped cloth sheet rubber clamped and coated by a mould special for butt joints. Compared with the prior art, the overall properties including the ring strong force, tear resistance, high temperature resistance, abrasion resistance, ageing resistance, the service life and the like of the sealing ring are obviously improved. The butt joint portion is subjected to sulfuration under pressure on the whole, and thus compactness and connecting strong force are improved. The purpose that the service life is reasonably matched with the maintenance period of the aircraft engine is achieved.

Description

technical field [0001] The invention relates to a rubber sealing product and a manufacturing and assembling method. Background technique [0002] A cylindrical metal transition section (transition section for short) is provided between the jet aircraft engine and the air inlet. On the wall of the outer cylinder adjacent to the two ports of this transition section, two annular rubber sealing rings with V-shaped cross-section and cloth frame layer with different specifications are pasted and installed to seal the gap between it and the engine and the air inlet, so as to play a good role. The role of connection, sealing and shock absorption. Since the working temperature of this part is above 150°C, as high as 180°C for a short time, and it is subjected to severe working conditions such as positive and negative pressure changes, friction, collision, etc., the quality and technical requirements are relatively strict. And because the two ports of the transition section are in t...

AI Technical Summary

Problems solved by technology

The service life of the sealing ring is much lower than the maintenance period of the aircraft engine, which increases the maintenance cost of the aircraft and affects the scientific research and flight mission execution of this type of aircraft

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