Heat accumulating type electric heating high-temperature electrode leading-out device

Abstract

The invention provides a heat accumulating type electric heating high-temperature electrode leading-out device which comprises an electrode leading-out section, a cavity with a U-shaped section is formed in the middle of the electrode leading-out section, the cavity is filled with ceramic fiber heat insulation cotton, and then an electrode wiring section is installed. First insulating ceramic is mounted on the outer circumferential surface of the electrode lead-out section in a matched manner; an electrode leading-out section at the tail part of the first insulating ceramic is sequentially sleeved with a V-shaped sealing ring and a second insulating ceramic; the outer circumferential surfaces of the first insulating ceramic and the second insulating ceramic are simultaneously provided witha spiral channel type water cooling jacket, the outer circumferential surfaces of the spiral channel type water cooling jackets are sleeved with a shell, and the shell is provided with a cooling water outlet and a cooling water inlet which are communicated with the spiral channel type water cooling jackets; flat gaskets are arranged on the electrode leading-out section on the outer side of the second insulating ceramic at intervals, a disc spring is arranged between the two flat gaskets, and compression nuts are arranged outside the flat gaskets on the outer sides. The structure is reliable in performance, and the use requirements of special occasions such as high-temperature environments and high-current-density transmission can be met.

Description

technical field [0001] The invention relates to the technical field of electrode lead-out devices, in particular to a regenerative electric heating high-temperature electrode lead-out device. Background technique [0002] The electric heater is a core electric heating equipment for technology research and development and performance verification of key military equipment. It is used for heating the flowing gaseous medium. When the heating medium passes through the heating chamber of the electric heater under pressure, the principle of fluid thermodynamics is used to uniformly take away the huge heat generated in the internal work of the electric heating element, so that the temperature of the heated medium meets the process requirements. [0003] In the prior art, it is necessary to lead out the power supply from the pressure vessel of the electric heater, usually directly using a solid electrode to lead out. In order to improve the current carrying capacity of the electrod...

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Problems solved by technology

[0003] In the prior art, it is necessary to lead out the power supply from the pressure vessel of the electric heater, usually directly using a solid electrode to lead out. In order to improve the current carrying capacity of the electrode, the usual method is to use low-resistivity materials or increase the current flow cross-sectional area, but the thermal conductivity of low-resistivity metal materials is high, and the increase in electrode cross-sectional area is equivalent to the increase in heat transfer area, which directly leads to the increase in heat transfer in high-temperature environments, so conventional electrode structures cannot achieve high-temperature environments. For the purpose of large current transmission, when external water cooling is used, it is difficult to achieve efficient cooling requirements due to the small surface area of ​​the solid structure for cooling. At the same time, the poor cooling effect will cause high-temperature aging of the seals, and there are certain safety hazards. Meet the use requirements

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