CN-120709023-B - High-temperature superconductive current lead heat insulation section structure with small through flow

CN120709023BCN 120709023 BCN120709023 BCN 120709023BCN-120709023-B

Abstract

The invention discloses a low-through-flow high-temperature superconductive current lead heat insulation section structure, which comprises a heat insulation section main body, wherein two filling grooves are symmetrically arranged on the front surface of the heat insulation section main body, a plurality of superconductive strips are stacked at the bottom of the filling grooves, two sides of each superconductive strip are fixed with the filling grooves through a brazing structure, and a plurality of stainless steel strips are laid at the tops of the superconductive strips.

Inventors

ZHANG ZHEWEN
ZHANG CHAO
LI ZHUYONG
YANG ZHAO

Assignees

能量奇点能源科技(上海)有限公司

Dates

Publication Date: 20260505
Application Date: 20250618

Claims (2)

1. The low-through-flow high-temperature superconductive current lead heat insulation section structure is characterized by comprising a heat insulation section main body (1), wherein two filling grooves (11) are symmetrically formed in the front of the heat insulation section main body (1), a plurality of superconductive strips (12) are stacked at the bottom of each filling groove (11), two sides of each superconductive strip (12) are fixed with each filling groove (11) through a brazing structure (13), and a plurality of stainless steel strips (14) are paved at the top of each superconductive strip (12); the heat insulation section main body (1) comprises a central section (2) and end heads (3) at two ends, wherein the central section (2) is of a stainless steel structure, and the end heads (3) are of a copper structure; the end head (3) is in clamping connection with the central section (2) through a mortise and tenon structure and is fixed through brazing; the width dimension of one end of the end head (3) far away from the central section (2) is larger than the width of the inner end of the end head, and the end head (3) is pre-bent by an angle along the length direction according to space requirements; the two ends (3) adopt a central symmetrical structure; The outer side of the heat insulation section main body (1) is coated with an insulating layer (15).
2. The structure of a small-through-flow high-temperature superconductive current lead heat insulation segment according to claim 1, wherein the insulating layer (15) is an epoxy glass fiber cloth and a KAPTON rewinding layer.

Description

High-temperature superconductive current lead heat insulation section structure with small through flow Technical Field The invention belongs to the technical field of superconducting magnets, and particularly relates to a low-through-flow high-temperature superconducting current lead heat insulation section structure. Background The superconducting magnet is an important component of a high-temperature superconducting tokamak device, the superconducting magnet needs to work at a low temperature, and the superconducting magnet is provided with a positive current lead and a negative current lead for connecting a power supply, and the current leads need to be cooled to ensure that the magnet operates at the working temperature. The current lead has temperature gradient from low temperature to normal temperature, so a section of structure is needed to ensure continuous through flow and temperature isolation of high and low temperature areas, and heat leakage of different temperature areas is reduced as much as possible. In the prior art, a similar heat insulation structure does not exist, so that a structure of a heat insulation section of a high-temperature superconductive current lead with small through flow is needed to be designed so as to ensure the continuous through flow and ensure the temperature isolation of a high-temperature area and a low-temperature area. Disclosure of Invention The invention aims to overcome the defects of the prior art and provides a low-through-flow high-temperature superconductive current lead heat insulation section structure. In order to achieve the above purpose, the invention adopts the following technical scheme: The utility model provides a little high temperature superconductive current lead heat-insulating section structure of through-flow, includes the heat-insulating section main part, two filling grooves have been seted up to heat-insulating section main part openly symmetry, the filling groove bottom piles up and has a plurality of superconductive strips, superconductive strip both sides are all fixed with the filling groove through the brazing structure, a plurality of stainless steel strips have been laid at superconductive strip top. Preferably, the heat insulation section main body comprises a central section and ends at two ends, the central section adopts a stainless steel structure, and the ends adopt a copper structure. Preferably, the end head and the central section are connected by adopting a mortise and tenon structure in a clamping way and are fixed by brazing. Preferably, the width dimension of one end of the end far away from the central section is larger than the width of the inner end of the end, and the end is pre-bent by an angle along the length direction according to space requirements. Preferably, the two ends adopt a central symmetrical structure. Preferably, the outer side of the heat insulation section main body is coated with an insulating layer. Preferably, the insulating layer is an epoxy glass fiber cloth and a KAPTON rewinding layer. In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows: According to the invention, the center section and the two copper ends of the stainless steel are designed, the ends are subjected to size expansion treatment, meanwhile, the stainless steel strips are stacked and laid in the filling groove and are brazed and fixed, the stainless steel strips are stacked and laid on the top to compact and superconductor so as to cope with delamination virtual joint caused by stress, the continuity of through flow and the temperature isolation of high and low temperature areas are ensured, the heat leakage of different temperature areas is reduced, and the practicability is strong. Drawings FIG. 1 is a schematic view of the overall structure of the present invention; FIG. 2 is a cross-sectional view of the insulation segment body of the present invention; fig. 3 is a cross-sectional view of the assembled structure of the present invention. Reference numeral 1, a heat insulation section main body, 11, a filling groove, 12, a superconducting tape, 13, a brazing structure, 14, a stainless steel belt, 15, an insulating layer, 2, a central section, 3 and a terminal. Detailed Description The following detailed description of specific embodiments of the invention. The "range" disclosed herein is defined in terms of lower and upper limits, with the given range being defined by the selection of a lower and an upper limit, the selected lower and upper limits defining the boundaries of the particular range. Ranges that are defined in this way can be inclusive or exclusive of the endpoints, and any combination can be made, i.e., any lower limit can be combined with any upper limit to form a range. For example, if ranges of 10 to 50 are listed for specific parameters, it is understood that ranges of 10 to 40 and 20 to 50 are also contemplated. Furthermore, if minimum range va