A superconducting current limiter coil pretensioning device

A superconducting current limiter and superconducting coil technology, which is applied in the direction of inductance/transformer/magnet manufacturing, electrical components, circuits, etc., can solve problems such as superconducting coil looseness, achieve compensation coil relaxation, convenient installation, and low manufacturing cost Effect

Active Publication Date: 2021-09-28
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention proposes a superconducting current limiter coil pretensioning device, which aims to solve the problem of loosening of the superconducting coil in the existing superconducting current limiter due to thermal expansion and contraction

Method used

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  • A superconducting current limiter coil pretensioning device
  • A superconducting current limiter coil pretensioning device

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Embodiment Construction

[0018] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0019] see figure 1 and figure 2 , which shows a preferred structure of the superconducting current limiter coil pretensioning device provided by the embod...

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Abstract

The invention provides a coil pretensioning device for a superconducting current limiter, which comprises: a coil supporting mechanism, two fixing mechanisms and an adjusting mechanism; wherein, the two fixing mechanisms are respectively arranged at the ends of the coil supporting mechanism for The coil support mechanism is clamped; there is a sliding gap between the fixed mechanism and the coil support mechanism, which is used to adjust the position of the coil support mechanism clamped in the fixed mechanism; the adjustment mechanism is arranged on the coil support mechanism, and is used to drive the coil support mechanism along the The sliding gap slides to apply preload to the superconducting coil. In the present invention, a sliding gap is set between the fixing mechanism and the coil supporting mechanism, so that the coil supporting mechanism can be driven to slide along the sliding gap through the adjustment of the adjusting mechanism, and then the coil supporting mechanism can be slid close to the superconducting coil to apply a pre-load to the superconducting coil. Tightening force, thereby ensuring that the tension and pre-tightening stress of the superconducting coil meet the requirements, and solve the loosening of the superconducting coil due to thermal expansion and contraction.

Description

technical field [0001] The invention relates to the technical field of superconducting current limiters, in particular to a coil pretensioning device for superconducting current limiters. Background technique [0002] With the rapid development of the national economy, the demand for electricity continues to increase, and the scale of the power grid continues to expand. If the fault current breaks through the breaking capacity of the existing circuit breaker, it will seriously endanger the related electrical equipment in the system. In order to ensure the safe and reliable operation of the system, the fault current must be cut off quickly. In order to limit the short-circuit current to a controllable level, the concept of a superconducting current limiter has long been proposed. However, because low-temperature superconductors operate at the temperature of liquid helium, the operating costs are too high and the low-temperature system is huge, so they cannot be commercialize...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/094
CPCH01F41/094
Inventor 诸嘉慧韩全陈盼盼赵勇青张会明张宏杰丁开忠
Owner CHINA ELECTRIC POWER RES INST
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