Dynamic sealing device based on rubber structure and its design method

Abstract

The invention discloses a dynamic sealing device based on a rubber structure and a design method thereof. The dynamic sealing device is mainly a sealing box, wherein the sealing box comprises a metal casing, a compression rubber block, steel wire ropes and screws; the metal casing is connected with the screws; the metal casing is connected with the compression rubber block through the screws; the steel wire ropes pass through a position between the metal casing and the compression rubber block; the sealing box is applicable to an emitting tube of a fuel gas generator; the emitting tube comprises an upper cavity, a lower cavity, a piston tail seat, a sealing box, a fuel gas generator and an inner tube; the upper cavity and the lower cavity are connected with the piston tail seat; the upper cavity and the lower cavity are connected with the two ends of the sealing box; the sealing box is positioned inside the piston tail seat; the fuel gas generator is arranged inside the lower cavity; and the upper cavity, the lower cavity and the piston tail seat are connected with the inner tube. The dynamic sealing device has the advantages that under the theory and value calculation, the sealing box design succeeds in one step; the development cost is reduced; and the development progress is also greatly accelerated.

Description

technical field [0001] The invention relates to a dynamic sealing device and a design method thereof, in particular to a rubber-based dynamic sealing device and a design method thereof. Background technique [0002] The fixed bomb mechanism needs to be unlocked by a gas generator, so it needs to penetrate the tailstock to fix the missile. The tailstock is an important part to isolate the side of the missile from the gas side. If it is pierced, it means air leakage, which means that the missile engine cannot be used. To avoid being affected by high temperature and high pressure gas, it is necessary to design a new dynamic sealing form to minimize the influence of missile engine by gas. [0003] This new dynamic sealing form utilizes the metal shell to compress the rubber to form a sealing box. The design idea of ​​the sealing box is simple, but it is not easy to realize. On the one hand, the design of the rubber size is the deformed state after being compressed. What is prod...

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Problems solved by technology

[0028] For high-dimensional design problems (design variables greater than 3), the FCM method has great defects in similarity and spatial distance. A fuzzy clustering method based on maximum likelihood estimation distance proposed by Bezdek and Dunn in 1979 Gath -Geva clustering method (GGM) is used to solve the shortage of optimal design in high-dimensional design variables

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