High-pressure annular electrode

Abstract

The invention relates to a high-pressure annular electrode and belongs to the aerospace aerodynamic thermal protection system field. The high-pressure annular electrode comprises an electrode inner sleeve, an electrode outer sleeve, a current guide block and a magnetic field coil; the electrode outer sleeve is of an annular structure; the electrode inner sleeve is fixedly mounted on the inner wall of the electrode outer sleeve; the current guide block is fixedly mounted in the electrode inner sleeve; the outer wall of the current guide block is wound with the magnetic field coil; the outer wall of the electrode outer sleeve is provided with a first water inlet and a first water outlet along a radial direction; the outer wall of the electrode outer sleeve is provided with a second water inlet along the radial direction; the outer wall of the electrode outer sleeve is fixedly provided with a second water outlet; the electrode outer sleeve is provided with a seal groove along an axial direction; and the electrode outer sleeve is provided with an air inlet along the axial direction. According to the high-pressure annular electrode of the invention adopted, the cooling effect of the high-pressure annular electrode is improved, pressure borne by the electrode inner sleeve is conducted onto the electrode outer sleeve, so that the pressure bearing strength of the electrode inner sleeve is improved; the magnetic rotation effect of the arc root of an electric arc can be enhanced; and the high-pressure annular electrode can be well cooled and is free of plastic deformation under high-temperature and high-pressure conditions.

Description

technical field [0001] The invention relates to the field of aerospace aerodynamic thermal protection systems, in particular to a high-voltage ring electrode. Background technique [0002] The arc heater is the core equipment for the thermal protection ground simulation test of aerospace vehicles at home and abroad, and it is an important means to solve the thermal protection ground assessment of hypersonic vehicles such as missiles, returnable satellites, and manned spacecraft return cabins. At present, the demand for the performance of arc heaters in domestic model development continues to increase, and arc heaters that operate for a long time under high arc chamber pressure conditions have become an urgent need for domestic model development. At present, the tubular arc heater is mainly responsible for the experimental task of high arc chamber pressure and long-term operation, but the arc heater with this structure has severe electrode ablation and bulging deformation dur...

AI Technical Summary

Problems solved by technology

At present, the tubular arc heater is mainly responsible for the experimental task of high arc chamber pressure and long-term operation, but the arc heater with this structure has severe electrode ablation and bulge deformation during long-term operation under high arc chamber pressure and pressure. However, it is unable to meet the requirements of the current domestic model tasks, so it is urgent to improve the existing electrodes to solve the above problems

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