Superconducting current-limiting transformer winding and cooling structure and cooling method thereof
A transformer winding, superconducting current-limiting technology, applied in the field of transformer cooling, can solve problems such as superconducting wires or insulation burning, and achieve the effect of improving the cooling effect
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[0037] Superconducting composite conductor: It is a conductor that uses superconducting materials and other conventional conducting materials in a certain structure to make superconducting materials more practical and widely used.
[0038] see figure 1 As shown, the structure of a superconducting current-limiting transformer generally includes an iron core 1 , a frame, a high-voltage winding frame, a high-voltage winding 2 , a low-voltage winding frame and a low-voltage winding 3 . Among them, the low-voltage winding bobbin can be a cylindrical or pie-shaped bobbin, and the high-voltage winding bobbin is generally a cylindrical bobbin.
[0039] Aiming at the deficiencies of the existing superconducting current-limiting transformer cooling methods, the present invention proposes a cooling structure with simple preparation process, strong operability and high efficiency; the present invention carries out cooling and heat dissipation design on the basis of the existing skeleton ...
Embodiment 1
[0041] see Figure 2 to Figure 5 As shown, the present invention provides a superconducting current-limiting transformer winding, which includes an interlayer spacer 10 for the winding, a winding frame 20 and an outer sheath structure 30 for the winding. By opening holes and adding sheaths, etc., the liquid nitrogen can fully cool the windings and improve the cooling effect.
[0042] 1. Interlayer gasket structure
[0043] see figure 2 As shown, since the winding of the superconducting current-limiting transformer is made of multi-layer superconducting strips or superconducting composite conductors, it is necessary to add an interlayer spacer 10 for heat dissipation and insulation between each layer; The gasket 10 is an epoxy insulating interlayer gasket. The interlayer spacer 10 is rectangular and has a plurality of first cooling channels 11 formed thereon.
[0044] The interlayer spacer 10 is made of a thin epoxy sheet with a thickness of about 1-3mm. The first heat di...
Embodiment 2
[0050] This embodiment provides a cooling structure for superconducting current-limiting transformer windings, including: two groups of superconducting current-limiting transformer windings in Embodiment 1; one group is used as high-voltage winding 2, and the other group is used as low-voltage winding 3; the diameter of high-voltage winding It is larger than the diameter of the low-voltage winding; the high-voltage winding is concentrically arranged on the outer circumference of the low-voltage winding.
[0051] This embodiment also includes a liquid nitrogen storage cylinder 6 ; the liquid nitrogen storage cylinder 6 is supported by the insulator 5 arranged on the iron core 1 .
[0052] The liquid nitrogen storage cylinder 6 is made of insulating material and is in the shape of an annular cylinder; both the low-voltage winding 2 and the high-voltage winding 3 are located in the liquid nitrogen storage cylinder 6, and the liquid nitrogen storage cylinder 6 is filled with liquid...
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Abstract
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