CN218351405U

CN218351405U - Novel electron gun cathode component

Info

Publication number: CN218351405U
Application number: CN202222417069.7U
Authority: CN
Inventors: 徐嘉立; 徐谦
Original assignee: Zhuzhou Lijie Electric Heating Technology Co ltd
Current assignee: Zhuzhou Lijie Electric Heating Technology Co ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2023-01-20
Anticipated expiration: 2032-09-13

Abstract

The utility model relates to a metal smelting device field discloses a novel electron gun cathode part, which comprises a fixed base, the fixing base upper surface is equidistant fixed a plurality of conducting blocks that are provided with, the fixed support column that is provided with in the positive center department of fixing base, the support column openly leans on both sides edge fixed respectively to be provided with to lead electrical pillar, the fixing base is through a plurality of conducting block fixedly connected with electron source mechanisms, electron source mechanism surface fixing is provided with the shell, electron source mechanism upper surface center department is fixed to be provided with and gathers bunch the utmost point, the shell internal surface is equidistant a plurality of second electric potential poles that are provided with. The utility model discloses in, through setting up electron source mechanism on the fixing base to be provided with shell and bunch utmost point in its outside, make electron gun cathode part from becoming integrative, but convenient to detach, do benefit to the maintenance, do benefit to the investigation problem when electron gun goes wrong, promote the practicality of this electron gun cathode part.

Description

Cathode assembly of electron gun

Technical Field

The utility model relates to a metal smelting device field especially relates to a novel electron gun cathode part.

Background

An electron beam smelting furnace is an application of an electron beam technology in metal smelting and polysilicon purification in the solar energy industry, an electron beam generator for smelting is a so-called axial electron gun, electrons emitted by an indirect heating cathode electron emission system form a high-energy electron beam under the acceleration of a high-voltage electrostatic field between a cathode and an anode, and then the electron beam bombards a material to be smelted after being focused, deflected and scanned by an electron optical path system, so that impurities in the material are volatilized, the purpose of purifying the material is achieved, the electron gun is used as a core component of the electron beam smelting furnace, and the generated electron beam is mainly realized by depending on a cathode component of the electron beam smelting furnace.

The size of the power of present electron gun cathode part decides the size that has directly decided electron beam melting furnace power, however, present electron gun is along with power is bigger and bigger, its inside cathode part is more and more easy to take place to damage, present cathode part is direct with its structure setting in the electron gun, thereby it is difficult to lead to changing after current cathode part damages, the practicality is not good, also easily take place simultaneously and cause serious discharge's phenomenon because of the gun room is unclean, there is certain safe risk, therefore, the technical staff in the art provides a novel electron gun cathode part, in order to solve the problem that proposes in the above-mentioned background art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the novel electron gun cathode part that proposes, this electron gun cathode part is through setting up electron source mechanism on the fixing base, and be provided with shell and bunch utmost point in its outside, make electron gun cathode part from an organic whole, but convenient to detach, do benefit to the maintenance, simultaneously, shell and bunch utmost point set up can be when gathering the beam forming with the electron current, avoid causing serious discharge's phenomenon because of the gun room is unclean, through this kind of setting, it does benefit to the investigation problem to go wrong when the electron gun, promote this electron gun cathode part's practicality, and the cooperation sets up the heat insulating board in the bottom, reduce the influence of external environment to this part, promote the security and the life of part.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a novel electron gun cathode component comprises a fixed seat, wherein a plurality of conductive blocks are fixedly arranged on the upper surface of the fixed seat at equal intervals, a support column is fixedly arranged at the center of the front surface of the fixed seat, conductive columns are respectively and fixedly arranged on the front surface of the support column close to the edges of two sides, and the fixed seat is fixedly connected with an electron source mechanism through the plurality of conductive blocks;

the outer surface of the electron source mechanism is fixedly provided with an outer shell, the center of the upper surface of the electron source mechanism is fixedly provided with a beam-focusing electrode, the inner surface of the outer shell is provided with a plurality of second potential rods at equal intervals, and the plurality of second potential rods are fixedly connected to the upper surface of the fixed seat through conductive blocks;

through above-mentioned technical scheme, through be provided with a plurality of conducting blocks on the fixing base to be provided with support column and lead electrical pillar in one side of fixing base, be favorable to leading-in part with the electric current, realize the transmission of electric current in the part, through be provided with electron source mechanism on the conducting block, be favorable to realizing this part to the production of electron, through be equipped with shell and bunch utmost point outside electron source mechanism, be favorable to gathering the beam with the electron current, realize the emission of this part to the electron beam.

Furthermore, the electron source mechanism comprises a cathode support, a collector support is fixedly arranged at the edge of one side of the bottom surface of the cathode support, and an ion collecting tube is fixedly arranged at the center of the bottom surface of the collector support;

through above-mentioned technical scheme, be favorable to promoting the ionization effect in the part, make its inside electric current grow reduce the internal resistance simultaneously, promote the result of use of part.

Furthermore, a first support plate is fixedly arranged on the bottom surface of the collector support, and a second support plate is fixedly arranged on the upper surface of the collector support;

through the technical scheme, the component can be fixed and limited by the collector support.

Furthermore, the collector support is fixedly connected with a plurality of first potential rods through a first support plate and a second support plate;

through the technical scheme, the position of the first potential bar is limited and fixed, the potential difference can be generated by the part, and electrons are released.

Furthermore, two support rods are fixedly connected to the edge of the cathode support close to the front side, and the upper ends of the two support rods are fixedly connected with a filament;

through the technical scheme, the support for the filament by the part is facilitated, current can be led into the filament, and generation of electrons is realized.

Furthermore, four tungsten rods are fixedly arranged on the inner surface of the periphery of the cathode support at equal intervals, and one ends of the four tungsten rods are fixedly connected with cathode blocks;

through the technical scheme, the heating device is favorable for receiving electrons emitted after the filament is heated, and the electrons overflow and flow to the anode hole, so that the function of the part is realized.

Furthermore, a plurality of third potential rods are fixedly connected to the outer surface of the periphery of the cathode support at equal intervals;

through above-mentioned technical scheme, be favorable to making to form higher potential difference between negative pole piece ability and the filament, ensure the holistic result of use of this part.

Furthermore, the bottom end of the electron source mechanism is fixedly connected with a first heat insulation plate and a second heat insulation plate;

through above-mentioned technical scheme, be favorable to realizing reducing because of the influence that the high temperature brought equipment, promote the safety in utilization and the life of this part.

The utility model discloses following beneficial effect has:

1. the utility model provides a novel electron gun cathode part compares in current electron gun cathode part, and this electron gun cathode part is through setting up electron source mechanism on the fixing base to be provided with shell and bunch utmost point outside it, make electron gun cathode part from an organic whole, but convenient to detach, do benefit to the maintenance, go wrong when the electron gun does benefit to the investigation problem, promote the practicality of this electron gun cathode part.

2. The utility model provides a pair of novel electron gun cathode part compares in current electron gun cathode part, and this electron gun cathode part shelters from and protects its inside electron source mechanism through dustcoat and bunch utmost point, and the two setting can avoid causing serious discharge's phenomenon because of the gun room is unclean when gathering the beam forming with the electron current, and the cooperation sets up the heat insulating board in the bottom, reduces the external environment to the influence of this part, promotes the security and the life of part.

3. The utility model provides a novel electron gun cathode part compares in current electron gun cathode part, and this electron gun cathode part is through being provided with first potential rod, second potential rod and the third potential rod respectively three in its inside to through being connected with different conducting blocks and forming huge potential difference, produce a large amount of electrons from this, promote the result of use of this part.

Drawings

Fig. 1 is an axial view of a cathode assembly of a novel electron gun according to the present invention;

fig. 2 is a schematic front view of a cathode assembly of the electron gun according to the present invention;

fig. 3 is a schematic front sectional view of a cathode assembly of a novel electron gun according to the present invention;

fig. 4 is an axial view of an electron source mechanism of a cathode assembly of the electron gun according to the present invention.

Illustration of the drawings:

1. a fixed seat; 2. a support pillar; 3. a conductive post; 4. a first potential bar; 5. a second potential bar; 6. a third potential bar; 7. a first heat insulation plate; 8. a second heat insulation plate; 9. a first support plate; 10. a second support plate; 11. a collector support; 12. a support bar; 13. an ion collection tube; 14. a cathode support; 15. a filament; 16. a cathode block; 17. a beam bunching electrode; 18. a tungsten rod; 19. a housing; 20. a conductive block; 21. an electron source mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a novel electron gun cathode component comprises a fixing seat 1, wherein a plurality of conducting blocks 20 are fixedly arranged on the upper surface of the fixing seat 1 at equal intervals, so that current can be guided into the component, the current can be transmitted in the component, a supporting column 2 is fixedly arranged at the center of the front surface of the fixing seat 1, conducting columns 3 are fixedly arranged on the front surface of the supporting column 2 close to the edges of two sides respectively, the component can be connected with an external circuit, an electron source mechanism 21 is fixedly connected to the fixing seat 1 through the conducting blocks 20, and the generation of electron beams by the component can be realized;

the outer surface of the electron source mechanism 21 is fixedly provided with an outer shell 19, the center of the upper surface of the electron source mechanism 21 is fixedly provided with a beam-focusing electrode 17, which is beneficial for the component to focus electron current into beams and realize the emission of electron beams, the inner surface of the outer shell 19 is provided with a plurality of second potential rods 5 at equal intervals, the second potential rods 5 are fixedly connected to the upper surface of the fixed seat 1 through conducting blocks 20, which is beneficial for the component to generate potential difference inside and realizes the release of the electron beams by the component.

The electron source mechanism 21 comprises a cathode support 14, a collector support 11 is fixedly arranged at the edge of one side of the bottom surface of the cathode support 14, and an ion collecting tube 13 is fixedly arranged at the center of the bottom surface of the collector support 11, so that the ionization effect in the component is improved, the internal current is increased, the internal resistance is reduced, and the using effect of the component is improved.

11 fixed bottom surfaces of collector support are provided with

first backup pad

9, 11 fixed surface of collector support are provided with second backup pad 10, collector support 11 is through a plurality of first electric potential rods 4 of first backup pad 9 and second backup pad 10 fixedly connected with, be favorable to this part to realize restricting and fixing the position of first electric potential rod 4, it produces the potential difference to be convenient for this part through a plurality of structures, cathode support 14 leans on two bracing pieces 12 of front side edge fixedly connected with, two bracing pieces 12 upper end fixedly connected with filament 15, be favorable to playing the supporting role to filament 15, through leading-in filament 15 with the electric current, the heating produces electron.

Cathode support 14 is fixed all around being provided with four tungsten poles 18 with equidistant inner surface, 18 one end fixedly connected with cathode block 16 of four tungsten poles, be favorable to accepting the electron that filament 15 produced, realize the impact to cathode block 16, realize the production of electron beam, cathode support 14 is a plurality of third potential rods 6 of equidistant fixedly connected with all around outer surface, be favorable to making the higher potential difference of formation between cathode block 16 ability and the filament 15, ensure the holistic result of use of this part, the first heat insulating board 7 of electron source mechanism 21 bottom fixedly connected with and second heat insulating board 8, be favorable to realizing completely cutting off this part and external environment, promote the security and the life that this part used.

The working principle is as follows: the part adopts an indirect heating type cathode system, firstly heats the filament 15, then adds a certain auxiliary high voltage between the cathode block 16 and the filament 15 to enable the surface of the filament 15 to emit electrons, so that the electrons emitted from the filament 15 are bombarded on the cathode block 16, thereby realizing the heating of the cathode block 16, and similarly, the cathode block 16 overflows electrons under the combined action of a high-voltage electrostatic field of tens of thousands of volts between a cathode and an anode and a spot electrode 17 equipotential electric field and flies to an anode hole, namely, an electron beam with an expected design shape is formed and enters an electron light path system through the anode hole.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A novel electron gun cathode component comprises a fixed seat (1), and is characterized in that: the upper surface of the fixed seat (1) is fixedly provided with a plurality of conductive blocks (20) at equal intervals, the center of the front surface of the fixed seat (1) is fixedly provided with a support column (2), the edges of the two sides of the front surface of the support column (2) are respectively and fixedly provided with a conductive column (3), and the fixed seat (1) is fixedly connected with an electron source mechanism (21) through the plurality of conductive blocks (20);

the electron source mechanism is characterized in that an outer shell (19) is fixedly arranged on the outer surface of the electron source mechanism (21), a beam-focusing electrode (17) is fixedly arranged at the center of the upper surface of the electron source mechanism (21), a plurality of second potential rods (5) are arranged on the inner surface of the outer shell (19) at equal intervals, and the second potential rods (5) are fixedly connected to the upper surface of the fixed seat (1) through conductive blocks (20).

2. The novel electron gun cathode assembly as claimed in claim 1, wherein: the electron source mechanism (21) comprises a cathode support (14), a collector support (11) is fixedly arranged at the edge of one side, close to the bottom surface, of the cathode support (14), and an ion collecting tube (13) is fixedly arranged at the center of the bottom surface of the collector support (11).

3. A novel electron gun cathode assembly as claimed in claim 2, wherein: the bottom surface of the collector support (11) is fixedly provided with a first support plate (9), and the upper surface of the collector support (11) is fixedly provided with a second support plate (10).

4. A novel electron gun cathode assembly as claimed in claim 2, wherein: the collector support (11) is fixedly connected with a plurality of first potential rods (4) through a first support plate (9) and a second support plate (10).

5. A novel electron gun cathode assembly as claimed in claim 2, wherein: the cathode support (14) is close to two bracing pieces (12) of fixedly connected with in front side edge, two bracing piece (12) upper end fixedly connected with filament (15).

6. A novel electron gun cathode assembly as claimed in claim 2, wherein: four tungsten rods (18) are fixedly arranged on the inner surface of the periphery of the cathode support (14) at equal intervals, and one ends of the four tungsten rods (18) are fixedly connected with cathode blocks (16).

7. A novel electron gun cathode assembly as claimed in claim 2, wherein: the outer surface around the cathode support (14) is fixedly connected with a plurality of third potential bars (6) at equal intervals.

8. The novel electron gun cathode assembly as claimed in claim 1, wherein: and the bottom end of the electron source mechanism (21) is fixedly connected with a first heat insulation plate (7) and a second heat insulation plate (8).