Temperature-equalization heat transfer device for heat treatment for large D-shaped Nb3Sn superconducting coil
A superconducting coil, a large-scale technology, applied in coil manufacturing, maintenance of heating chamber, lighting and heating equipment, etc., can solve the problems of irregular shape of D-shaped superconducting coil, large heat treatment furnace, complicated process control, etc. Achieve the effect of reducing the risk of local overheating, improving safety and reliability, and reducing gas eddy currents
Active Publication Date: 2020-08-04
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology
[0007] (2) The shape of the D-shaped superconducting coil is irregular, which may easily cause local overheating in heat treatment;
[0008] (3) The superconducting coil is bulky, which makes the heat treatment furnace difficult and the process control is complicated
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[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] Such as figure 1 , figure 2 , image 3 As shown, the present invention proposes a large D-shaped Nb 3 Sn superconducting coil heat treatment uniform temperature heat transfer device, including: D-shaped cover plate, D-shaped uniform temperature radiation screen and D-shaped bottom plate;
[0033] see figure 1 , the D-shaped cover plate is divided into an argon gas outlet pipe 1, a cover plate sealing plate 2, an even outflow orifice pla...
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Abstract
The invention discloses a temperature-equalization heat transfer device for heat treatment for a large D-shaped Nb3Sn superconducting coil. The temperature-equalization heat transfer device for heat treatment for the large D-shaped Nb3Sn superconducting coil comprises a D-shaped cover plate, a D-shaped temperature-equalization radiation screen and a D-shaped bottom plate, wherein the D-shaped cover plate comprises argon gas outlet pipes, a cover plate sealing plate, a flow-equalization gas outlet hole plate and flow-guide fins, the flow-guide fins are installed on the flow-equalization gas outlet hole plate in the form of an array, the flow-equalization gas outlet hole plate is installed on the cover plate sealing plate, and a plurality of groups of the argon gas outlet pipes are installedon the cover plate sealing plate; and the D-shaped temperature-equalization radiation screen comprises a D-shaped inner-side temperature-equalization radiation screen and a D-shaped outer-side temperature-equalization radiation screen. The temperature-equalization heat transfer device for heat treatment for the large D-shaped Nb3Sn superconducting coil has the following advantages: the temperature-equalization heat transfer device is combined with an argon-shield heat treatment manner, so that the heat treatment temperature uniformity of a workpiece can be improved, and the superconducting performance of the Nb3Sn superconducting coil can be improved. The temperature-equalization heat transfer device is capable of effectively reducing gas vortex on the surface of the coil, reducing the risk of local overheating of the superconducting coil, and greatly reducing the construction cost for heat treatment equipment.
Description
technical field [0001] The present invention relates to large D-shaped Nb 3 Sn superconducting coil heat treatment technical field, especially a large D-shaped Nb 3 Sn superconducting coil heat treatment uniform temperature heat transfer device. Background technique [0002] The China Fusion Engineering Test Reactor (CFETR) is a tokamak test device independently designed and built by China. The CFETR magnet system mainly includes longitudinal field coils (TF), poloidal field coils (PF), and center solenoid coils (CS). There are 16 groups of CFETR TF coils. The TF superconducting coils are shaped like a capital D. The TF coils have a large radius of about 9m, a small radius of about 6m, a height of about 1m, and a thickness of about 0.8m. The TF coils are mainly used to generate a hoop magnetic field. , used to confine the plasma. [0003] The development of TF coils is the key technology for constructing CFETR superconducting magnet system. The TF superconducting coil w...
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IPC IPC(8): F27D7/06H01F41/04
CPCF27D7/06H01F41/048F27D2007/063
Inventor 王维俊于敏秦经刚武玉李建刚
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI