Method for measuring temperature of densely-winded superconducting coil in cooled process

Abstract

The invention discloses a method for measuring the temperature of a densely-winded superconducting coil in a cooled process. The method comprises the following steps of: theoretically calculating a direct relation between the overall resistance and the temperature of the superconducting coil to obtain an R-T relational expression; measuring the resistance of the coil once every 30 minutes in the cooled process of the coil by using a measurement device; comparing the measured resistance of the coil with the R-T relational expression to calculate the real-time temperature of the coil; feeding the overall temperature of the coil back to a low temperature system so as to adjust a cooling scheme; and fitting a coil temperature and resistance relational expression in real time to observe a coil cooling curve. The method measures the temperature of the coil by measuring the resistance of the superconducting coil, measures the resistance value of the coil at the end of a current lead wire, and then calculates the real-time temperature of the coil according to the relational expression between the temperature and the resistance so as to measure the overall temperature of the coil and to achieve the real-time measurement of the coil temperature.

Description

technical field [0001] The invention belongs to the technical field of superconductivity, and in particular relates to a method for measuring the overall temperature of the coil during the cooling process of a densely wound superconducting coil. Background technique [0002] As an emerging technology in the 21st century, superconducting technology has been widely used in many fields such as national economy, scientific experiments, national defense and military industry, and its industrial scale is also growing. [0003] Superconductivity refers to the property that some substances have zero resistance to cooling under certain temperature conditions, so superconducting coils work at extremely low temperatures. As the core component of superconducting magnets, superconducting coils have always attracted much attention, and their safety and stability are also the focus of research. After the superconducting coil is manufactured, it is generally necessary to conduct an electri...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the requirement of measuring the coil temperature during the cooling process of the superconducting coil test, the present invention proposes a method for measuring the overall temperature of the densely wound superconducting coil. The overall temperature of the coil can be calculated based on the relationship between them. This method can not only avoid the problem of not being able to arrange a thermometer in a densely wound coil, but also avoid the difficulty of determining whether the coil as a whole has reached the temperature required for operation due to uneven temperature measurement. It is of great importance. engineering practical significance

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