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Work circuit achieving stable parallel connection of multiple hollow cathodes and work method of work circuit

A hollow cathode and working circuit technology, which is applied to circuits, discharge tubes, electrical components, etc., can solve the problems of uneven current, difficult ignition, hollow cathode extinguishing, etc., and achieve the effect of reducing the potential drop of the cathode and suppressing the oscillation of the cathode discharge

Inactive Publication Date: 2014-07-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that it is difficult to ignite when hollow cathodes are used in parallel, and the current is seriously uneven during steady-state operation, which leads to the problem that one of the hollow cathodes is easily extinguished. The present invention provides a working circuit for realizing stable parallel connection of multiple hollow cathodes and How this working circuit works

Method used

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  • Work circuit achieving stable parallel connection of multiple hollow cathodes and work method of work circuit
  • Work circuit achieving stable parallel connection of multiple hollow cathodes and work method of work circuit
  • Work circuit achieving stable parallel connection of multiple hollow cathodes and work method of work circuit

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specific Embodiment approach 1

[0030] Specific implementation mode one: see figure 1 with 2 Describe this embodiment, a working circuit for realizing stable parallel connection of multiple hollow cathodes described in this embodiment, which includes a main air supply pipe 4, N branch air supply pipelines 3, a single-pole multi-throw switch 12, and a resistor R 2 , an ignition power supply 8, an anode power supply 9 and N units 13; said N is an integer greater than or equal to 2,

[0031] The first output terminals of the N units 13 are connected to the negative pole of the ignition power supply 8 and the negative pole of the anode power supply 9 at the same time, and the positive pole of the ignition power supply 8 is connected to the resistance R 2 One end of the connection, the positive pole of the anode power supply 9 is connected to one end of the anode 10,

[0032] The second output terminals of the N units 13 are respectively connected to N static ends of the single-pole multi-throw switch 12; the ...

specific Embodiment approach 2

[0043] Specific Embodiment 2: The difference between the operating circuit for realizing the stable parallel connection of multiple hollow cathodes described in the specific embodiment 1 of this embodiment is that the range of N is 2 to 20.

specific Embodiment approach 3

[0044] Embodiment 3: Based on Embodiment 1 or Embodiment 2, a working circuit that realizes stable parallel connection of multiple hollow cathodes realizes a working method for stable parallel connection of multiple hollow cathodes. The specific process of the method is as follows:

[0045] Step 1. The plume openings 1-5 of the N hollow cathodes 1 are arranged opposite to the anode 10, and the distance between the plume openings 1-5 of the hollow cathode 1 and the anode 10 is d millimeters, and the value of d is is a real number greater than 5,

[0046] Step 2, passing xenon gas into the main gas supply pipe 4;

[0047] Step 3: Connect the contact and holding pole power supply 5, the heating power supply 7 and the ignition power supply 8, connect the moving end of the single-pole multi-throw switch 12 to its N static ends in turn, and connect the holding poles 1-4 of the hollow cathode 1 to the cathode tube 1 The xenon gas between -1 is ionized, so that the hollow cathode 1 e...

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Abstract

The invention provides a work circuit achieving stable parallel connection of multiple hollow cathodes and a work method of the work circuit, and belongs to the technical field that plasma thrusts self-support hollow cathodes. The work circuit and the work method of the circuit solve the problem that when the hollow cathodes are connected in parallel, ignition is difficult, currents are nonuniform seriously during stable operation, and accordingly one of the hollow cathodes is prone to going out. The work circuit comprises N units, each unit comprises one hollow cathode, a contact electrode power supply, a diode, a heating power supply and a slide rheostat R1, a throttling ring is embedded in a cathode tube of each hollow cathode, the positive pole of each contact electrode power supply is connected with the anode of the corresponding diode, the cathode of each diode serves as the second output end of the corresponding unit and is connected with a contact electrode of the corresponding hollow cathode, the cathode tube of each hollow cathode is simultaneously connected with the negative pole of the corresponding contact electrode power supply, the negative pole of the corresponding heating power supply and one end of the corresponding slide rheostat R1, the positive pole of each heating power supply is connected with a heater of the corresponding hollow cathode, and a main gas supply pipe is communicated with the N hollow cathodes through N branch gas supply pipelines respectively. The work circuit is applied to a plasma thrustor.

Description

technical field [0001] The invention belongs to the technical field of self-sustaining hollow cathodes used in plasma propulsion, and in particular relates to the field of hollow cathode parallel discharge electrodes and cathode-plasma thruster coupling. Background technique [0002] The hollow cathode is an essential part of the electric thruster, and all the electronic currents required by the electric thruster are provided by the hollow cathode. Part of the electrons generated by it in the thermal emission state are used as seed electrons to maintain the plasma discharge, and the other part is used as neutralizing electrons to neutralize the thruster ion beam. The installation positions of the hollow cathodes of different thrusters are different. Taking the Hall thruster as an example, the hollow cathode is installed at the exit of the channel, and the cathode plasma is coupled with the thruster plume through a plasma bridge. [0003] As the power of the electric thruste...

Claims

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Application Information

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IPC IPC(8): H01J37/32F03H1/00
Inventor 于达仁孟天航宁中喜欧阳磊安秉建
Owner HARBIN INST OF TECH
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