Thermal stress eliminating structure

Abstract

The invention provides a thermal stress eliminating structure which is characterized in that a shrinkage gap is formed between an installation sinking groove and a T-shaped connector under the normal temperature condition, the shrinkage rate of a main pressing plate is set to be smaller than that of a main shrinkage body, the shrinkage amount of the main shrinkage body is larger than that of the main pressing plate under the low temperature condition, and after the main shrinkage body shrinks, the two installation sinking grooves on the main shrinkage body are close to each other; the relative displacement amount of the first main bearing component and the second main bearing component is smaller than the shrinkage amount of the main shrinkage body due to supporting of the main pressing plate, and a shrinkage gap for sliding of the T-shaped connector is reserved in the shrinkage direction of the main shrinkage body, so that the mounting sinking groove is filled and pressed in the sliding direction of the T-shaped connector, and the T-shaped connector is prevented from being damaged. Stress transmitted to the first main bearing component and the second main bearing component by synchronous contraction of the two components is avoided, stress concentration is avoided, and the safety of the supporting structure is guaranteed.

Description

technical field [0001] The invention relates to the technical field of material stress analysis, and more specifically relates to a thermal stress relief structure. Background technique [0002] In the structural design of low-temperature service components, it usually involves the working condition that the temperature drops from normal temperature to low temperature. Due to the different linear expansion coefficients of different materials, and the large difference in shrinkage deformation between the normal temperature end and the low temperature end, there will be relatively large internal deformation of the component. Large stress, which in turn leads to complex material selection and structure in structural design of components, difficulty in realizing lightweight design concepts, and even damage to some components due to local stress concentration. [0003] Therefore, how to eliminate the internal stress of low-temperature service components when the operating tempera...

AI Technical Summary

Problems solved by technology

[0002] In the structural design of low-temperature service components, it usually involves the working condition that the temperature drops from normal temperature to low temperature. Due to the different linear expansion coefficients of different materials, and the large difference in shrinkage deformation between the normal temperature end and the low temperature end, there will be relatively large internal deformation of the component. Large stress, which in turn leads to complex material selection and structure in the structural design of components, and it is difficult to realize the lightweight design concept, and even some parts may be damaged due to local stress concentration

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