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Water-cooled cathode head of plasma generator

A plasma generator and water-cooled cathode technology, which is applied to plasma, electrical components, etc., can solve the problems of short life, heavy maintenance and replacement work, and poor water-cooling effect at the cathode emitting end, so as to achieve convenient maintenance and replacement and improve cooling effect. , The effect of not easy to damage

Pending Publication Date: 2019-06-07
CHENGDU JINCHUANGLI SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The water-cooled cathode head of the plasma generator provided by the present invention is to solve the problem of poor water-cooling effect, short service life, and large maintenance and replacement workload of the existing high-power plasma generator cathode emitter, so as to provide more optimized performance and meet the needs of high-power plasma generators. generator needs

Method used

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  • Water-cooled cathode head of plasma generator
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  • Water-cooled cathode head of plasma generator

Examples

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Effect test

Embodiment 1

[0025] Example 1 see figure 1 , figure 2 , image 3

[0026] A water-cooled cathode head for a plasma generator, used in a non-transferred arc plasma generator, consisting of the following:

[0027] 1) see figure 1 , figure 2 , the upper end of which is a cylindrical central seat 3 with a pointed body; the outer periphery of the central seat 3 is provided with a cylindrical outer cold wall 1 at a certain annular distance B in the radial direction. The center seat 3 and the outer cold wall 1 are connected by the sealing ring bottom 3.1 at the bottom to form a heating unit, and the inner cavity of the sealing ring bottom forms an annular water return tank 4. The inner hole at the lower end of the center seat 3 is a planar emitter, and an alloy tungsten cylinder 5 is used. Except the alloy tungsten cylinder 5 in the center seat 3, all the components in the heating unit are made of red copper. That is, the center seat 3 , the sealing ring bottom 3.1 and the outer cold w...

Embodiment 2

[0033] Embodiment 2: see Figure 4, Figure 5 , Figure 6 .

[0034] A water-cooled cathode head of a plasma generator, which can be used in a transferred arc generator, consists of the following:

[0035] 1) see Figure 4 , the upper end of which is a cylindrical central seat 3A with a pointed body; the outer periphery of the central seat 3A is provided with a cylindrical outer cold wall 1A at a certain annular distance Ba in the radial direction. The central seat 3A and the outer cold wall 1A are connected by a radial sealing ring bottom 3.1A at the bottom to form a heating unit, and the inner cavity of the sealing ring bottom forms an annular return water tank 4A. The inner hole emitter at the lower end of the center seat 3A adopts an alloy tungsten cylinder 5A. All components in the heating unit except the alloy tungsten cylinder 5A are made of red copper. That is, except for the alloy tungsten cylinder, the center seat 3A, the sealing ring bottom 3.1A and the outer ...

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Abstract

Disclosed is a water-cooled cathode head of a plasma generator. Outer cooling walls are arranged at intervals on the outer periphery of a central seat with an internal emission body, and the bottom ends of the outer cooling walls and the central seat are connected into an integrated heating body by a sealing ring bottom, and a water returning groove is formed in an inner cavity of the sealing ringbottom, so that the heat of a cathode emitting end is dispersed, and the heat, which is originally concentrated in the central seat, is dispersed in the central seat, the sealing ring bottom and theouter cooling walls. Water is introduced from an annular barrel at the outer layer of a cathode water cooling jacket, firstly flows through the external cold wall thread section for primary cooling, then falls into the water returning groove, and then turns upwards to cool the central seat along the surface of the central seat, so that the two-time cooling of the heat source of the emitting end iscompleted. High temperature resistance and low probability of damage are achieved; and the continuous emission time is prolonged to 700 hours from the original 400 hours. Due to the fact that external threads of the outer cold wall are in threaded connection with the lower threaded section of the water cooling sleeve of the cathode, when a discharging surface is burnt out, the threads are rotated, so that the cathode head can be replaced conveniently. The water-cooled cathode head of plasma generator can be used for a non-transfer and transfer arc plasma generator, in particular to a high-power 200-500 KW generator.

Description

(1) Technical field: [0001] The invention relates to a cathode structure of a high-power (above 200KW) plasma generator, which belongs to the category of ion generation and spark gap (H01T). (two) background technology: [0002] A plasma generator that generates a high-temperature heat source includes the following parts: cathode assembly, anode assembly, water cooling system, air pressure system, and water pressure system. Among them, the emitter of the cathode assembly is the part that generates the arc. The working environment is harsh, the temperature is high, it is easily damaged, and the life is short. With the increase of the capacity, the life of the emitter of the cathode will directly affect the working efficiency and operating cost of the plasma generator. [0003] Chinese Utility Model Patent <Cathode Head for Cathode Gun, Cathode Gun and Plasma Generator Including the Cathode Head> (Patent No. ZL201720508811.1), and Chinese Invention Patent Application <...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/28
Inventor 李裔红
Owner CHENGDU JINCHUANGLI SCI & TECH
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