抗干扰低温杜瓦装置

By designing liquid nitrogen chambers, liquid helium chambers, and vacuum chambers, and combining superconducting coils and resistive coils, the interference problem of cryogenic Dewar devices in harsh environments was solved, achieving both accurate experimental data and a compact structure, suitable for installation in the central hole of water-cooled magnets.

CN122237237BActive Publication Date: 2026-07-17HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
Filing Date
2026-05-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional cryogenic Dewar devices cannot effectively reduce external interference signals in harsh experimental environments, leading to distorted experimental data. Furthermore, their large size makes them unsuitable for installation in the central hole of a water-cooled magnet.

Method used

The device employs liquid nitrogen and liquid helium chambers for cooling, combined with a vacuum chamber to reduce the transmission of low temperatures, and uses superconducting coils and resistive coils to reduce interference signals. The cryo-mechanical components are eliminated to reduce the size of the device.

Benefits of technology

This improved the accuracy of experimental data, reduced external interference signals and vibrations, and met the installation requirements of the center hole of the water-cooled magnet.

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Abstract

本发明公开了一种抗干扰低温杜瓦装置,包括壳体、杜瓦组件和样品杆组件,壳体为顶部开口的筒状结构且套设在杜瓦组件外部,样品杆组件设置在杜瓦组件内部;杜瓦组件包括封盖、第一绝热套筒和第二绝热套筒,样品杆组件包括样品杆、连接板、样品台、超导线圈和有阻线圈。本发明的优点在于,本发明通过液氮腔和液氦腔进行冷却降温,通过第一真空腔和第二真空腔减少低温向外传出,保证对样品杆组件样品端的冷却降温的精度,并通过液氦腔对样品台和超导线圈进行降温,满足超导线圈进入超导状态的低温要求,当装置外部的干扰信号、振动出现时,超导线圈分别产生感应电流,将干扰信号、振动降低或消除,提高实验数据准确性。
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