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Pre-tightening device of superconducting current limiter coil

A superconducting current limiter and superconducting coil technology, applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve problems such as loosening of superconducting coils, achieve compensation for coil loosening, solve loosening, and low manufacturing costs Effect

Active Publication Date: 2019-04-09
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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  • Pre-tightening device of superconducting current limiter coil
  • Pre-tightening device of superconducting current limiter coil

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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 pre-tightening device of a superconducting current limiter coil. The device comprises a coil support mechanism, two fixing mechanisms and an adjusting mechanism, the two fixing mechanisms are respectively arranged at end portions of the coil support mechanism to clamp the coil support mechanism, a sliding gap is arranged between the fixing mechanisms and the coil support mechanism to adjust the position of the coil support mechanism clamped in the fixing mechanisms, and the adjusting mechanism is arranged on the coil support mechanism to drive the coil support mechanism to slide along the sliding gap so that a pre-tightening force is applied to the superconducting coil. According to the device, the sliding gap is arranged between the fixing mechanisms and the coilsupport mechanism to drive the coil support mechanism to slide along the sliding gap through adjustment of the adjusting mechanism, the coil support mechanism slides close to the superconducting coilto apply the pre-tightening force to the superconducting coil, it is ensured that the tensioning and pre-tightening stresses of the superconducting coil are in accordance with the requirement, and thecondition of loosening of the superconducting coil due to thermal expansion and cold contraction is solved.

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 Applications(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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