CN204029758U - A kind of grid-control Multi-Beam electron Gun - Google Patents

A kind of grid-control Multi-Beam electron Gun Download PDF

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Publication number
CN204029758U
CN204029758U CN201420362491.XU CN201420362491U CN204029758U CN 204029758 U CN204029758 U CN 204029758U CN 201420362491 U CN201420362491 U CN 201420362491U CN 204029758 U CN204029758 U CN 204029758U
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China
Prior art keywords
grid
cylinder
electron gun
combination
cathode
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CN201420362491.XU
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Chinese (zh)
Inventor
杨陆堂
罗敏
管玉柱
马静
吴亚琴
杨磊
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Nanjing Sanle Electronic Information Industry Group Co Ltd
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Nanjing Sanle Electronic Information Industry Group Co Ltd
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Abstract

The utility model discloses a kind of grid-control Multi-Beam electron Gun, it comprises: shell combination, cathode heater combination, support tube combination.The grid-control Multi-Beam electron Gun that the utility model provides, reasonable in design, precision, reliability, stability are high, electron beam state is good, electron beam flow rate can, up to more than 98%, adopt integral type shadow grid and integral type control gate, not only there is no the intrinsic rabbit ear oscillatory occurences of cathode control structure, and there is less modulation voltage, can greatly improve the reliability of travelling wave tube.

Description

A kind of grid-control Multi-Beam electron Gun
Technical field
The utility model relates to the electron gun that a kind of travelling wave tube is used, and is specifically related to a kind of grid-control Multi-Beam electron Gun that is applicable to multi-traveling wave tube.
Background technology
Along with the fast development of modern radar, radar complete machine is more and more higher to the reliability requirement of travelling wave tube, can reduce sparking and puncture number of times and reduce operating voltage, thus the reliability of raising travelling wave tube.The multibeam electron note that multi-traveling wave tube is launched by electron gun carries out energy exchange with radio frequency system, due to the increase of electron beam number, multiple electron beams are had an effect with radio-frequency field simultaneously, and total perveance of multi-traveling wave tube increases, and its operating voltage also declines thereupon.The multi-traveling wave tube electron gun mechanism design of prior art is reasonable not, have obvious rabbit ear oscillatory occurences, and electron beam flow rate is lower, affects the service behaviour of travelling wave tube.
Therefore, necessary on the basis of prior art, a kind of reasonable in design of research and design, precision is high, and electron beam state meets designing requirement, the grid-control Multi-Beam electron Gun of the electron beam that electron beam flow rate is high.
Utility model content
Utility model object: the purpose of this utility model is in order to solve the deficiencies in the prior art, provide a kind of structural design more reasonable, precision, reliability, stability are higher, electron beam state meets designing requirement, electron beam flow rate is high, can avoid the grid-control Multi-Beam electron Gun of the electron beam of rabbit ear oscillatory occurences.
Technical scheme: in order to realize above object, technical solution adopted in the utility model is:
A kind of grid-control Multi-Beam electron Gun, it comprises: shell combination, cathode heater combination, support tube combination, heat shielding combination;
Described shell combination is welded by porcelain ring, ripple porcelain and ceramic sealing alloy;
The combination of described cathode heater comprises negative electrode, cathode anchor with cathode weld, the heated filament being connected with negative electrode, and described heated filament is fixed by jewel sheet and fixing heated filament pallet, and the other end of described heated filament leads to heated filament lead-in wire; Described cathode heater combination is fixed on cathode support cylinder, and cathode support cylinder is arranged on cathode block;
The combination of described support tube comprise shadow grid cylinder, control gate cylinder and be arranged on shadow grid cylinder and control gate cylinder between insulation porcelain cylinder;
Described negative electrode top is provided with shadow grid, and shadow grid top is provided with control gate, and bunching electrode is installed on control gate, and bunching electrode top is provided with anode; Described shadow grid is arranged on shadow grid support, and shadow grid support is arranged on shadow grid cylinder; Described control gate is arranged on control gate cylinder; Described anode is arranged on shell and combines on the sealing ring being connected;
Between described cathode support cylinder and shadow grid cylinder, heat shielding cylinder is installed;
Described shadow grid support is arranged on rifle core and props up cylinder above, and rifle core props up cylinder and is connected with the sealing ring being arranged in shell combination.
As preferred version, above-described grid-control Multi-Beam electron Gun, described negative electrode is 4.Grid-control Multi-Beam electron Gun described in the utility model adopts multiple independent negative electrodes, and the current emission density of each negative electrode is 11A/cm 2; The spherical crown height of each negative electrode, diameter equidimension all need unanimously, can ensure that like this emission state of each electron beam is consistent.Each negative electrode and cathode anchor are welded into assembly by the mode of laser welding, when welding, ensure the poor 0.02mm of being less than of difference in height, position degree of each negative electrode.
As preferred version, above-described grid-control Multi-Beam electron Gun, is provided with shielding cylinder between described control gate cylinder and porcelain ring.
As preferred version, above-described grid-control Multi-Beam electron Gun, described heated filament is 2 single-screw parallel-connection structures that curve semicircle.
As preferred version, above-described grid-control Multi-Beam electron Gun, described cathode block is arranged on heat shielding sheet, and heat shielding sheet is fixed on fixed mount.
As preferred version, above-described grid-control Multi-Beam electron Gun, described shadow grid and the thickness of control gate are 0.06mm, the wide 0.06mm of grid silk.
As preferred version, above-described grid-control Multi-Beam electron Gun, described ripple porcelain outside is provided with 4 groups of ripples, can be in order to increase insulation resistance.
The operation principle of grid-control Multi-Beam electron Gun described in the utility model is: provide heating power to heated filament, make the working temperature of each negative electrode be 1050 DEG C, cathode to anode voltage adds to 19800V, negative electrode-control gate cut-ff voltage adds to 500V, the pulse signal of negative electrode-control gate input+480V, all negative electrodes are electron emission note simultaneously, and because the optical texture size at each electron beam place is consistent, therefore the emission state of all electron beams is consistent.
Beneficial effect: the grid-control Multi-Beam electron Gun that the utility model provides compared with prior art has the following advantages:
The grid-control Multi-Beam electron Gun that the utility model provides, reasonable in design, precision, reliability, stability are high, electron beam state is good, electron beam flow rate can be up to more than 98%, and adopts aperture plate (comprising integral type shadow grid and integral type control gate), not only there is no the intrinsic rabbit ear oscillatory occurences of cathode control structure, and there is less modulation voltage, can greatly improve the reliability of travelling wave tube.
Brief description of the drawings
The structural representation of the grid-control Multi-Beam electron Gun that Fig. 1 provides for the utility model.
Fig. 2 is the structural representation of negative electrode in the grid-control Multi-Beam electron Gun that provides of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment and only be not used in restriction scope of the present utility model for the utility model is described, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the amendment of the various equivalent form of values of the present utility model.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of grid-control Multi-Beam electron Gun, it comprises: shell combination, cathode heater combination, support tube combination, heat shielding combination;
Described shell combination is welded with ceramic sealing alloy by porcelain ring (25), ripple porcelain (24);
The combination of described cathode heater comprises negative electrode (1), cathode anchor (6) with negative electrode (1) welding, the heated filament (9) being connected with negative electrode (1), described heated filament (9) is fixed by jewel sheet (7) and fixing heated filament pallet (10), and the other end of described heated filament (9) leads to heated filament lead-in wire (20); It is upper that described cathode heater combination is fixed on cathode support cylinder (11), and cathode support cylinder (11) is arranged on cathode block (17);
The combination of described support tube comprise shadow grid cylinder (15), control gate cylinder (13) and be arranged on shadow grid cylinder (15) and control gate cylinder (13) between insulation porcelain cylinder (16);
Described negative electrode (1) top is provided with shadow grid (2), and shadow grid (2) top is provided with control gate (3), and bunching electrode (4) is installed on control gate (3), and bunching electrode (4) top is provided with anode (5); It is upper that described shadow grid (2) is arranged on shadow grid support (14), and shadow grid support (14) is arranged on shadow grid cylinder (15); Described control gate (3) is arranged on control gate cylinder (13); Described anode (5) is arranged on shell and combines on the sealing ring (22) being connected;
Between described cathode support cylinder (11) and shadow grid cylinder (15), heat shielding cylinder (12) is installed;
Described shadow grid support (14) is arranged on rifle core and props up cylinder (21) above, and rifle core props up cylinder (21) and is connected with the sealing ring (22) being arranged in shell combination.
Above-described grid-control Multi-Beam electron Gun, described negative electrode (1) is 4.
Above-described grid-control Multi-Beam electron Gun, is provided with shielding cylinder (23) between described control gate cylinder (13) and porcelain ring (25).
Above-described grid-control Multi-Beam electron Gun, described heated filament (9) is 2 single-screw parallel-connection structures that curve semicircle.
Above-described grid-control Multi-Beam electron Gun, it is upper that described cathode block (17) is arranged on heat shielding sheet (18), and heat shielding sheet (18) is fixed on fixed mount (19).
Above-described grid-control Multi-Beam electron Gun, described shadow grid (2) and the thickness of control gate (3) are 0.06mm, the wide 0.06mm of grid silk.
Embodiment 2
The grid-control Multi-Beam electron Gun of getting above embodiment 1 is assembled to travelling wave tube and carries out Performance Detection: testing result is as shown in table 1:
The performance test results of table 1 grid-control Multi-Beam electron Gun
Uf(V) Uk(kV) Ug(V) Ugp(V) Ic Ib
10.2 19.8 -500 480 423 9
Wherein, Uf is heater voltage, and Uk is negative electrode operating voltage, and Ug is grid back bias voltage, and Ugp is grid impulse voltage, and Ic is collector electric current, and Ib is Body-current, and its electron beam flow rate is 98%.The electron gun that adopts the utility model to provide is successfully applied in multi-traveling wave tube, and each electron beam state meets designing requirement, and the flow rate of multi-traveling wave tube can reach 98%, superior performance.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims (6)

1. a grid-control Multi-Beam electron Gun, is characterized in that, it comprises: shell combination, cathode heater combination, support tube combination;
Described shell combination is welded with ceramic sealing alloy by porcelain ring (25), ripple porcelain (24);
The combination of described cathode heater comprises negative electrode (1), cathode anchor (6) with negative electrode (1) welding, the heated filament (9) being connected with negative electrode (1), described heated filament (9) is fixed by jewel sheet (7) and fixing heated filament pallet (10), and the other end of described heated filament (9) leads to heated filament lead-in wire (20); It is upper that described cathode heater combination is fixed on cathode support cylinder (11), and cathode support cylinder (11) is arranged on cathode block (17);
The combination of described support tube comprise shadow grid cylinder (15), control gate cylinder (13) and be arranged on shadow grid cylinder (15) and control gate cylinder (13) between insulation porcelain cylinder (16);
Described negative electrode (1) top is provided with shadow grid (2), and shadow grid (2) top is provided with control gate (3), and bunching electrode (4) is installed on control gate (3), and bunching electrode (4) top is provided with anode (5); It is upper that described shadow grid (2) is arranged on shadow grid support (14), and shadow grid support (14) is arranged on shadow grid cylinder (15); Described control gate (3) is arranged on control gate cylinder (13); Described anode (5) is arranged on shell and combines on the sealing ring (22) being connected;
Between described cathode support cylinder (11) and shadow grid cylinder (15), heat shielding cylinder (12) is installed;
Described shadow grid support (14) is arranged on rifle core and props up cylinder (21) above, and rifle core props up cylinder (21) and is connected with the sealing ring (22) being arranged in shell combination.
2. grid-control Multi-Beam electron Gun according to claim 1, is characterized in that, described negative electrode (1) is 4.
3. grid-control Multi-Beam electron Gun according to claim 1, is characterized in that, between described control gate cylinder (13) and porcelain ring (25), shielding cylinder (23) is installed.
4. grid-control Multi-Beam electron Gun according to claim 1, is characterized in that, described heated filament (9) is 2 single-screw parallel-connection structures that curve semicircle.
5. grid-control Multi-Beam electron Gun according to claim 1, is characterized in that, it is upper that described cathode block (17) is arranged on heat shielding sheet (18), and heat shielding sheet (18) is fixed on fixed mount (19).
6. grid-control Multi-Beam electron Gun according to claim 1, is characterized in that, described shadow grid (2) and the thickness of control gate (3) are 0.06mm, the wide 0.06mm of grid silk.
CN201420362491.XU 2014-07-02 2014-07-02 A kind of grid-control Multi-Beam electron Gun Active CN204029758U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420362491.XU CN204029758U (en) 2014-07-02 2014-07-02 A kind of grid-control Multi-Beam electron Gun

Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105414732A (en) * 2015-12-23 2016-03-23 哈尔滨工业大学(威海) Multi-cathode electronic gun device
CN105977119A (en) * 2016-07-12 2016-09-28 电子科技大学 Method for determining virtual anode position of grid control electron gun

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105414732A (en) * 2015-12-23 2016-03-23 哈尔滨工业大学(威海) Multi-cathode electronic gun device
CN105977119A (en) * 2016-07-12 2016-09-28 电子科技大学 Method for determining virtual anode position of grid control electron gun
CN105977119B (en) * 2016-07-12 2017-11-17 电子科技大学 A kind of grided electron gun virtual anode method for determining position

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