A temperature detection system and method for a superconducting magnetic levitation device
A detection system and magnetic levitation technology, applied in the field of sensors, can solve problems such as the decrease of superconductor hardness, levitation force, guide force attenuation, damage to superconductor structure, etc., to achieve the effect of optimizing levitation force and enhancing levitation force
Active Publication Date: 2021-12-07
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
[0003] There are many problems in the existing technology: for example, operations such as punching holes in the superconductor structure are required for quench detection, which can easily damage the superconductor structure of the ceramic material
For the high-temperature superconducting magnetic levitation device system, the overall hardness of the perforated superconductor decreases, and the levitation force and guiding force provided by it have a large attenuation, which is not conducive to practical application
Due to the limitations of the size and detection accuracy of the current platinum resistance and thermocouple sensors, it is difficult to accurately locate and measure the key hot spots inside the superconducting block.
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[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without cre...
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The invention relates to the technical field of sensors, in particular to a temperature detection system and method for a superconducting magnetic levitation device. In the present invention, the superconducting tape is adhered to the bottom of the superconducting block, and the optical fiber sensor is arranged at the bottom of the superconducting block and the connection mode between the layers of the superconducting tape, and the distributed optical fiber sensor is used as a measuring device to realize the measurement of Real-time detection of tiny temperature changes in superconductors. Using the bottom of the superconducting block and the superconducting tape in the superconducting suspension as the main temperature detection substrate, the temperature of the entire superconducting suspension can be detected quickly and accurately. The superconducting tape has a multi-layer protective base layer that optimizes and enhances the levitation force, guiding force, damping, mechanical strength and thermal stability of the superconducting bulk material. In addition, the number of sensor test points in this patent can reach 1,500 per meter, which can collect temperature values that vary in a wide range at more key points of the superconductor, and the detected signal has a lag in time as a critical quench criterion for the magnetic levitation system.
Description
technical field [0001] The invention relates to the technical field of sensors, in particular to a temperature detection system and method for a superconducting magnetic levitation device. Background technique [0002] The superconducting magnetic levitation device train utilizes the magnetic flux pinning characteristics of superconducting materials. When the field-cooled superconductor above the magnet moves relative to the magnet, an induced current is generated in the superconductor, which interacts with the external magnetic field to generate levitation force and guiding force. Stable suspension. The temperature rise detection of the on-board superconductor in the high-temperature superconducting magnetic levitation device system, also known as quench detection, is extremely important to provide an early signal for the system to start early warning protection. Limited by the three-dimensional geometric block structure of the superconducting block and the background fiel...
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IPC IPC(8): G01K11/32G01K11/3206
CPCG01K11/32
Inventor 郑珺温鹏刘晓宁陈楠陈凌邓自刚
Owner SOUTHWEST JIAOTONG UNIV