Flexible multi-point supporting sealing structure

Abstract

The invention provides a flexible multi-point supporting sealing structure which comprises a porous supporting pipe section, an expansion ring, a multi-point flexible supporting ring and an end face sealing pipe section which are sequentially arranged, the end face sealing pipe section and the porous supporting pipe section are in clearance fit and can relatively move in the axis direction, and an expansion gap is formed between the end face sealing pipe section and the porous supporting pipe section. The multi-point flexible supporting ring is provided with a plurality of supporting foot structures, the supporting foot structures can be compressed and expanded in the axial direction, the supporting foot structures are matched with the inner wall of the multi-hole supporting pipe section to position and support the multi-point flexible supporting ring, and the expansion ring can deform in the radial direction and can be in sliding fit with the inner wall of the multi-hole supporting pipe section. According to the flexible multi-point supporting sealing structure, the thermal deformation amount of a high-temperature gas pipeline can be absorbed, the higher the temperature is, the larger the compression amount of the multi-point flexible supporting ring is, the larger the generated axial force is, the better the sealing effect is, the number of parts of a traditional high-temperature gas pipeline inserting structure can be greatly reduced, and high compactness is achieved.

Description

technical field [0001] The invention belongs to the technical field of high-temperature gas sealing, and in particular relates to a flexible multi-point supporting sealing structure. Background technique [0002] The high-temperature gas pipeline is responsible for the transmission of high-temperature gas. At the same time, it needs to withstand the scour of continuously changing gases of different temperatures. The pipeline is prone to deformation, gas leakage and other problems. If gas leakage occurs in the high-temperature gas pipeline, it will cause environmental pollution in the slightest, and serious failures such as fire in the severest case. Due to the high working temperature and large thermal expansion of the high-temperature gas pipeline, the expansion and contraction of the gas pipeline at the standard ambient temperature and working temperature are very large. In order to avoid reliability problems such as cracks in the gas pipeline, long gas pipelines need to ...

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a flexible multi-point support sealing structure to solve the sealing problem of segmented high-temperature gas pipelines, which can greatly reduce the number of components in the traditional high-temperature gas pipeline plug-in structure and achieve high compactness

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