Passive self-motion structure design method and low-temperature temperature control switch

Abstract

The invention discloses a passive self-motion structure design method. The method comprises the following steps: determining a relative motion distance between a first assembly and a second assembly when the temperature is changed from normal temperature to service temperature; calculating a relative movement distance t1 of the first assembly and the second assembly in the passive self-movement structure when the temperature is changed from normal temperature to service temperature and when the first assembly and the second assembly move in the same direction and a relative movement distance t2 of the first assembly and the second assembly move in the opposite direction; and determining the distance t0 between the first assembly and the second assembly in a normal temperature state, determining t0 according to the relative position relation of the first assembly and the second assembly and t1 during same-direction movement, and determining t0 according to the relative position relation of the first assembly and the second assembly and t2 during reverse movement. According to the passive self-motion structure design method provided by the invention, the relative motion distance between the first assembly and the second assembly at the service temperature is accurately calculated, so that the distance is preset at the normal temperature, and the design is completed. The invention further discloses a low-temperature control switch.

Description

technical field [0001] The invention relates to the field of kinematic structures, in particular to a design method for passive kinematic structures. Background technique [0002] In the design of the structure in very high temperature service, it usually involves the working condition that the temperature rises from normal temperature to high temperature or drops to low temperature. Since the structure is composed of various components, the linear expansion coefficients of different materials are different, and the normal temperature of the same component There is a large difference in deformation between the extreme temperature end and the very temperature end, which will cause a large relative displacement between the various components inside the structure. [0003] The designer can design the structure at the service temperature and use it at the service temperature to ensure the smooth operation of the structure. However, some service temperatures are much higher or l...

AI Technical Summary

Problems solved by technology

However, when the temperature range is large, the linear expansion coefficient of the material has a large difference between the service temperature and the normal temperature. When the above method is used, there will be a large error, which will cause the structure to fail at the service temperature and affect the use.

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