High pressure low ablation tubular electrode
An electrode and high-voltage technology, which is applied in the direction of electric heating devices, electrical components, heating through discharge, etc., to improve the effect of water cooling and heat transfer and reduce the effect of ablation
Active Publication Date: 2016-05-11
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology
Our existing laminated arc heater technology can only achieve low-pressure, high-enthalpy test conditions, and research on the high-voltage long-term operation of laminated arc heaters is still blank. The key technology for high-voltage long-term operation of arc heaters is to ensure that the electrodes of laminated arc heaters can operate stably under high-voltage conditions, so it is urgent to design an electrode for laminated arc heaters that can operate under high-voltage conditions for a long time
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[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0029] see figure 1 , the present invention provides a high-pressure low-ablation tubular electrode, including: an electrode inner sleeve 1, which is made of electrode materials for arc heating equipment, and is used to form an arc; an electrode outer sleeve 2, which is sleeved on the electrode inner sleeve The outer side of 1 defines an annular cavity with the inner electrode sleeve 1; the magnetic field coil 4; and an insulating support, which is arranged in the annular cavity and is made of insulating material, and the insulating support includes an inner bracket and an outer bracket; wherein, the inner bracket is sleeved on the outside of the electrode inner sleeve, coaxially arranged with the electrode inner sleeve, the magnetic f...
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The invention discloses a high-voltage low-erosion tube type electrode which comprises an inner electrode sleeve, an outer electrode sleeve, a magnetic field coil and an insulating support, wherein the inner electrode sleeve is made of an electrode material for electric arc heating equipment; the outer electrode sleeve sleeves the outer sides of the inner electrode sleeve, and an annular cavity is limited between the outer electrode sleeve and the inner electrode sleeve; the insulating support is arranged in the annular cavity and made of an insulating material; the insulating support comprises an inner support and an outer support, the inner support sleeves the outer side of the inner electrode sleeve and is coaxial with the inner electrode sleeve; the magnetic field coil is enwound on the inner support, and the outer support sleeves the magnetic field coil. A built-in magnetic field is formed in the magnetic field coil, and the generated magnetic field covers the whole electrode. The rotation of an arc root of an electric arc on the inner electrode sleeve is enhanced, and the erosion of the inner electrode sleeve is reduced.
Description
technical field [0001] The invention relates to a tubular electrode, in particular to a tubular electrode which is applied to a laminated arc heater and can operate under high pressure (not lower than 5Mpa) for a long time. Background technique [0002] The arc heater is the core equipment for the thermal protection ground simulation test of aerospace vehicles at home and abroad. The research on the arc heater is an important means to solve the thermal protection ground assessment of hypersonic vehicles such as missiles, returnable satellites, and manned spacecraft return cabins. The current demand for the performance of arc heaters continues to increase, and arc heaters that operate for a long time under high 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-voltage long-term operation, but the electrode ablation of the electric arc heater with this struct...
Claims
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IPC IPC(8): H05B7/22
Inventor 刘祥陈连忠杨国铭陈海群彭锦龙
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS