Abstract

A device has been developed based on alloys with a high-temperature shape memory effect. It aims to be used in mechanical engineering products, in particular, nuclear technology, in order to prevent emergency situations of man-made and natural nature. The device works by breaking the electrical circuit in the event of an emergency increase in the ambient temperature above the permissible temperature by cutting the electrical cable. The shape restoration properties of thermosensitive working elements made of the Ni_49.5Ti_48.0Hf_2.5 alloy with high temperature shape memory have been studied. The results of the experiments allow us to conclude that it is possible to use the device in electrical systems for cutting heat-resistant electrical cables with an outer diameter of d_out = 3.4–5.0 mm and a copper wire cross-section of 0.2–1.5 mm² with a knife in an emergency situation, when the ambient temperature exceeds 100°С and the maximum heating reaches 200°С.

中文翻译：

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一种基于高温形状记忆合金的安全装置

摘要

基于具有高温形状记忆效应的合金开发出了一种装置。它旨在用于机械工程产品，特别是核技术，以防止人为和自然的紧急情况。该设备的工作原理是，在环境温度紧急升高到超过允许温度的情况下，通过切断电缆来断开电路。 Ni材质热敏工作元件_49.5Ti_48.0Hf_2.5合金。实验结果使我们得出结论，可以在电气系统中使用该装置来切割外径为d_out = 3.4–5.0 mm 和横截面为 0.2–1.5 mm 的铜线² 用刀在紧急情况下，当环境温度超过100°С且最高加热达到200°С时。