A high temperature superconductor temperature monitoring device and method based on non-stick fiber grating temperature sensor

A technology of temperature sensor and optical fiber grating, which is applied in the field of high-temperature superconductor temperature monitoring technology devices, can solve the problems of sample stripping, unstable temperature measurement, and non-reusability, etc., and achieve the effect of stable temperature measurement and saving testing costs

Active Publication Date: 2022-08-09
CHINA THREE GORGES CORPORATION
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  • Abstract
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  • Claims
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Problems solved by technology

However, after research, it is found that the above method uses low-temperature glue to paste the FBG temperature sensor on the surface of the high-temperature superconducting tape, and it is difficult to ensure the uniformity of the low-temperature glue around the FBG temperature sensor, which may cause chirp in the FBG sensor Phenomenon, resulting in unstable temperature measurement
In addition, in practical applications, due to the embedding and pasting of the fiber grating temperature sensor, there is a potential possibility of destroying the inherent properties of high-temperature superconductors or high-temperature superconducting magnets
Considering the economy, for the research on the quenching detection mechanism of high-temperature superconducting strips, the surface-attached fiber grating temperature sensor cannot be safely peeled off from the sample after the experiment, and cannot be reused, and there is a problem of waste of components

Method used

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  • A high temperature superconductor temperature monitoring device and method based on non-stick fiber grating temperature sensor
  • A high temperature superconductor temperature monitoring device and method based on non-stick fiber grating temperature sensor
  • A high temperature superconductor temperature monitoring device and method based on non-stick fiber grating temperature sensor

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Embodiment 1

[0043] see Figure 1-7 , a high temperature superconductor temperature monitoring device based on a non-stick fiber grating temperature sensor, which includes a fiber grating temperature sensor 3, the fiber grating temperature sensor 3 is directly embedded in the sample skeleton of the high temperature superconductor whose temperature is to be monitored. By using the temperature monitoring device of the present invention, the fiber grating temperature sensor 3 is embedded into the sample skeleton of the high-temperature superconducting tape or the high-temperature superconducting magnet, instead of directly pasting the fiber grating temperature sensor on the high-temperature superconducting magnet or high-temperature superconductor The surface of the high-temperature superconducting tape can protect the performance of the high-temperature superconducting tape or the high-temperature superconducting magnet from being damaged, thereby improving the measurement accuracy and reliab...

Embodiment 2

[0053] see figure 1 , when using the fiber grating temperature sensor to monitor the temperature of the high-temperature superconducting magnet online, the fiber grating temperature sensor can be embedded into the sample skeleton. like figure 1 As shown, it is a schematic diagram of a round cake-shaped superconducting magnet with a fiber grating temperature sensor embedded in the sample skeleton. figure 1 It is just an example, and in practical applications, the superconducting magnet may also be a magnet with any other structure such as a horseshoe coil. Among them, 1 is a magnet coil skeleton, 2 is a high temperature superconducting magnet coil, and 3 is a fiber grating temperature sensor. From the working principle and electromagnetic knowledge of the high-temperature superconducting coil, it can be known that the surface magnetic field intensity is the largest at the inner side of the high-temperature superconducting magnet coil 2 near the magnet coil bobbin 1, which lea...

Embodiment 3

[0055] see figure 2 , for the application of fiber grating temperature sensor to study the quench mechanism and temperature propagation characteristics of high-temperature superconducting tape, the fiber grating temperature sensor can be embedded into the sample skeleton. like figure 2 As shown, a schematic diagram of a superconducting tape sample with a sample skeleton embedded in a fiber grating temperature sensor. Among them, 4 is a G10 sample skeleton, 5 is a high temperature superconducting tape, and 6 is a first fiber grating temperature sensor with a capillary encapsulation structure embedded in the sample skeleton. In order to reduce the temperature delay between the tested superconductor and the fiber grating sensor, the protective sleeve should be made of materials with high thermal conductivity, and its inner diameter should not be too large, and should match the diameter of the optical fiber to facilitate the optical fiber to pass through. At the same time, in ...

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Abstract

The invention provides a high temperature superconductor temperature monitoring device and method based on a non-stick fiber grating temperature sensor. The method embeds the fiber grating temperature sensor into the superconducting tape or superconducting magnet sample skeleton, which can effectively protect the fiber grating temperature sensor, avoid the wavelength distortion of the fiber grating caused by the glue, and make the measurement stable and reliable. . In addition, for the study of the quenching mechanism of high-temperature superconducting tapes, the non-stick fiber grating temperature sensor can be used multiple times to avoid waste and has the characteristics of economical saving. This method can be used together with the sticker fiber grating temperature monitoring technology. Comprehensive temperature monitoring of high temperature superconductors.

Description

technical field [0001] The invention relates to the field of high-temperature superconductor temperature monitoring technical devices, in particular to a high-temperature superconductor temperature monitoring device and method based on a non-stick fiber grating temperature sensor. Background technique [0002] After years of development, electrical equipment such as motors, transformers, current limiters, and energy storage magnets made of high-temperature superconductors have been tried to be used in fields such as high-energy physics, aerospace, medical equipment, transportation, and power energy. However, the potential stability problems in the application of high-temperature superconductors have always been a key factor limiting their applications. For superconductors, only when they are in a superconducting state, can they have the advantages of zero resistance and complete diamagnetism that conventional conductors do not have. In practical applications, superconductor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/32
CPCG01K11/32Y02E40/60
Inventor 刘延超尹立坤吴云翼
Owner CHINA THREE GORGES CORPORATION
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