A high-voltage multi-electrode device

Abstract

The invention discloses a high-voltage multi-electrode device. The high-voltage multi-electrode device is a bell-shaped body with an open front end, and the bell-shaped inner cavity is sequentially fixed with ring-shaped electrode pieces with inner diameters from large to small and U-shaped radial cross-sections, and a central electrode piece; each electrode piece Sandwich water-cooling structure is adopted, the inner shell material is oxygen-free copper, the outer shell material is stainless steel, and the interlayer water-cooling structure passes through the cooling water to cool the inner shell; the outer shell is nested with excitation coils, which generate a magnetic field when energized, and excite the arc to rotate; the intervals between the electrode pieces are Seal the insulating ring and the intake ring, and the swirling airflow ejected between the electrode sheets rushes into the inner cavity of the high-voltage multi-electrode device. The high-voltage multi-electrode device uses the combination of changes in the inner surface of the electrode sheets to adjust the distance between the discharge area of ​​different electrode sheets and the core arc, reduce the voltage difference between the arcs carried by each electrode sheet in a high-voltage environment, and realize effective shunting in a high-voltage environment. , can be used as the cathode of the chip arc heater for heat resistance test.

Description

technical field [0001] The invention belongs to the technical field of aerodynamic heat-resistant ground test equipment for aerospace vehicles, and in particular relates to a high-voltage multi-electrode device. Background technique [0002] At present, with the rapid development of hypersonic flight technology, the ground heat protection test assessment of the thermal protection system of hypersonic aircraft has put forward higher and higher requirements for the operation capability of arc heating equipment. Chip arc heater is one of the important heating equipments to realize high-power, high-enthalpy, long-term ground heat-proof test and assessment; chip arc heater is composed of nozzle, front and rear electrodes, several water-cooled annular compression sheets, intake ring And insulators assembled in series, the arc connects the front and rear electrodes, and restricts the tubular channel through the tangential air intake between the compression plates, and the gas ioniz...

AI Technical Summary

Problems solved by technology

However, when the total pressure of the traditional laminated multi-electrode is above 1.7MPa, due to the high-voltage accumulation effect of the arc, it cannot effectively shunt the large current load, which limits the simulation range of the total pressure of the chip arc heater.

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