CN2735536Y - Cathode arrangement for strong current electronic gun - Google Patents
Cathode arrangement for strong current electronic gun Download PDFInfo
- Publication number
- CN2735536Y CN2735536Y CN 200420090482 CN200420090482U CN2735536Y CN 2735536 Y CN2735536 Y CN 2735536Y CN 200420090482 CN200420090482 CN 200420090482 CN 200420090482 U CN200420090482 U CN 200420090482U CN 2735536 Y CN2735536 Y CN 2735536Y
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- CN
- China
- Prior art keywords
- electron gun
- high current
- current electron
- gun cathode
- cathode assembly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A cathode arrangement for strong current electronic gun is characterized in that it comprises a gun body, which is composed of a flange, a lead wire connecting column on the flange, a clamping rod assembly connected with the lead wire connecting column and a cathode arranged in the clamping rod assembly. The apparatus is easy to mount and dismount, and the gun body can be used repeatedly. With high calorific efficiency and excellent rigidity, the life time of the cathode fastening the electrode of the utility model mode is long.
Description
Technical field
The utility model relates to a kind of high current electron gun cathode assembly.
Background technology
As shown in Figure 4, the mode of heating of conventional electron gun oxide coated cathode mainly adopts indirect, and its negative electrode is in heat shielding cylinder upper end, the heater that has a tungsten filament to make behind at negative electrode, it is passed to certain electric current produce high temperature, utilizing thermal radiation is that negative electrode heats and the generation electronics.
Lanthanum boride negative electrode 1 combines with heat shielding cover 2 upper ends, and heater 3 is in the behind of lanthanum boride negative electrode 1, and tail end links to each other with heating electrode 5, and 4 are the vacuum seal flange.
There is following defective in said apparatus:
1. negative electrode utilizes the indirect mode, relies on the thermal radiation heating, and efficient is low, and emitting electrons is few.
2. the electron gun life-span is subjected to the restriction in heater life-span.
3. complex structure, inconvenience processing can not be changed negative electrode, the cost height.
Summary of the invention
The purpose of this utility model is the defective that overcomes prior art, and a kind of direct-fired high current electron gun cathode assembly is provided.
The purpose of this utility model is achieved in that
A kind of high current electron gun cathode assembly comprises: rifle body, this rifle body comprise that a flange and the lead-in wire that is connected on this flange connect post; Connect the folder rod assembly that post links to each other with this lead-in wire; Place the negative electrode of this folder rod assembly.
Wherein, this flange is provided with two circular holes, and the outer rim of this flange is provided with the vacuum seal groove, and the outside of this circular hole is provided with the stress groove.
Wherein, this lead-in wire connects the lead-in wire rod that post comprises earthenware, kovar alloy and is placed in one.
Wherein, this lead-in wire connects post and is inserted in the circular hole on this flange, and fuses with the mode of this flange by welding.
Wherein, this kovar alloy, earthenware and this lead-in wire rod become one by the mode of welding.This lead-in wire rod can be a copper rod.
In addition, this folder rod assembly comprises: the pair of L-shaped support, and its middle position is provided with a circular hole, and tail end has a screw; Be connected the clamp assembly on this two L bracket; Place balance weight and a pair of heating piece between this two L bracket.
Wherein, this L bracket lower end is provided with a groove, and front end is provided with a groove.
Wherein, this L bracket is pure molybdenum.
Wherein, this two L bracket is about this flange axis symmetry.
Wherein, clamp assembly comprises: an insulating sleeve, place this insulating sleeve metal threaded pull bar, be enclosed within two insulating washers and two metal nuts at these metal threaded pull bar two ends.
This insulating sleeve can be a pottery.
This insulating washer can be a pottery.
Wherein, this heating piece places the groove of this L bracket front end.
Wherein, this balance weight places the groove of this L bracket lower end.
This heating piece can be a graphite.
This balance weight can be a pottery.
Wherein, this insulating sleeve places in the circular hole of middle position of this L bracket.
Wherein, the screw of this folder rod assembly by this L bracket tail end is connected in this lead-in wire and connects on the post.
Wherein, the upper end of this negative electrode becomes the face of cylinder in this device, and both sides respectively have one to be plane otch.
Wherein, this negative electrode places between this two heatings piece.
This negative electrode can be a lanthanum boride.
Positive progressive effect of the present utility model is:
1. heating current directly makes the negative electrode heating by pressing from both sides rod importing heating piece, has improved the heat efficiency.
2. cause moving of heating piece and negative electrode position when the balance weight in the rack groove can be avoided stepping up, increase the rigidity of anchor clamps, improve the stability of drawing electronic beam current.
3. install, dismantle easily, the rifle body is reusable, can keep the mechanical precision of former installation for a long time, and the life-span is the several years.
Description of drawings
Fig. 1 is the three-dimensional exploded view of an embodiment of the present utility model.
Fig. 2 is the front section view of an embodiment of the present utility model.
Fig. 3 is the solid combination schematic diagram of an embodiment of the present utility model.
Fig. 4 is common indirect heating type gun cathode structure cutaway view.
Embodiment
Provide the utility model one better embodiment below in conjunction with accompanying drawing, describe the details of the technical solution of the utility model in detail.
As Fig. 1,2, the rifle body is made of metal flange 10 and insulating ceramics stem 20, have two circular holes 13 on this flange 10, these circular hole 13 outsides have stress groove 12, this flange outer rim 11 has the vacuum seal groove, and this stem 20 is made of earthenware 21, kovar alloy 22, lead-in wire copper rod 23, is integral by vacuum welding, stem 20 inserts in the circular hole 13 of flange 10, and integrally welded.The effect of stress groove is to prevent welding deformation, and heating power supply copper rod 23 is thus introduced.
This folder rod assembly is made of pair of L-shaped support 30, a clamp assembly 40, balance weight 50, a pair of heating piece 60.These L bracket 30 tail ends have a screw 31, and a groove 32 is opened in the lower end, and middle position is opened a circular hole 33, and front end is opened a groove 34.These L bracket 30 tail end screws 31 are connected with the end 231 that copper rod 23 has screw thread, and are fastening by nut 80.This steps up assembly and is made of metal threaded pull bar 41, insulating washer 42, insulating sleeve 43 and clamp nut 44.
The lower end groove 32 of this L bracket 30 is embedded in balance weight 50, be embedded in two heating pieces at front end groove 34, be embedded with lanthanum boride negative electrode 70 between this two heatings piece 60, insert an insulating sleeve 43 in the middle position hole 33, penetrate a metal threaded pull bar 41, a ceramic washer 42 respectively is inserted at two ends, steps up with two metal nuts 44.
These lanthanum boride negative electrode 70 upper ends become the face of cylinder 71, and both sides respectively have one to be plane otch 72, so that closely contact with heating piece 60.
Under the effect of clamping force, L bracket 30, balance weight 50, heating piece 60, lanthanum boride negative electrode 70 form a rigid unitary, are not subjected to the influence of heating current temperature difference wide variation.Lanthanum boride negative electrode 70 is in a fixing position all the time, makes the emission of electronic stability.
Claims (22)
1, a kind of high current electron gun cathode assembly is characterized in that this high current electron gun cathode assembly comprises: a rifle body, this rifle body comprise that a flange and the lead-in wire that is connected on this flange connect post; Connect the folder rod assembly that post links to each other with this lead-in wire; Place the negative electrode of this folder rod assembly.
2, high current electron gun cathode assembly according to claim 1 is characterized in that this flange is provided with two circular holes, and the outer rim of this flange is provided with the vacuum seal groove, and the outside of this circular hole is provided with the stress groove.
3, high current electron gun cathode assembly according to claim 1 is characterized in that this lead-in wire connects the lead-in wire rod that post comprises earthenware, kovar alloy and is placed in one.
4, high current electron gun cathode assembly according to claim 2 is characterized in that this lead-in wire connects post and is inserted in the circular hole on this flange, and fuses with the mode of this flange by welding.
5, high current electron gun cathode assembly according to claim 3 is characterized in that this kovar alloy, earthenware and this lead-in wire rod become one by the mode of welding.
6, according to claim 3 or 5 described high current electron gun cathode assemblies, it is characterized in that this lead-in wire rod is a copper rod.
7, high current electron gun cathode assembly according to claim 1 is characterized in that this folder rod assembly comprises: the pair of L-shaped support, and its middle position is provided with a circular hole, and tail end has a screw; Be connected the clamp assembly on this two L bracket; Place balance weight and a pair of heating piece between this two L bracket.
8, high current electron gun cathode assembly according to claim 7 is characterized in that this L bracket lower end is provided with a groove, and front end is provided with a groove.
9, high current electron gun cathode assembly according to claim 7 is characterized in that this L bracket is pure molybdenum.
10,, it is characterized in that this two L bracket is about this flange axis symmetry according to each described high current electron gun cathode assembly of claim 7-9.
11, high current electron gun cathode assembly according to claim 7 is characterized in that this clamp assembly comprises: an insulating sleeve, place this insulating sleeve metal threaded pull bar, be enclosed within two insulating washers and two metal nuts at these metal threaded pull bar two ends.
12, high current electron gun cathode assembly according to claim 11 is characterized in that this insulating sleeve is a pottery.
13, high current electron gun cathode assembly according to claim 11 is characterized in that this insulating washer is a pottery.
14, high current electron gun cathode assembly according to claim 8 is characterized in that this heating piece places the groove of this L bracket front end.
15, high current electron gun cathode assembly according to claim 8 is characterized in that this balance weight places the groove of this L bracket lower end.
16, high current electron gun cathode assembly according to claim 7 is characterized in that this heating piece is a graphite.
17, high current electron gun cathode assembly according to claim 7 is characterized in that this balance weight is a pottery.
18, high current electron gun cathode assembly according to claim 11 is characterized in that this insulating sleeve places in the circular hole of middle position of this L bracket.
19, high current electron gun cathode assembly according to claim 7 is characterized in that the screw of this folder rod assembly by this L bracket tail end is connected in this lead-in wire and connects on the post.
20, high current electron gun cathode assembly according to claim 1 is characterized in that the upper end of this negative electrode becomes the face of cylinder, and both sides respectively have one to be plane otch.
21, high current electron gun cathode assembly according to claim 7 is characterized in that this negative electrode places between this two heatings piece.
22,, it is characterized in that this negative electrode is a lanthanum boride according to claim 1 or 21 described high current electron gun cathode assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420090482 CN2735536Y (en) | 2004-09-24 | 2004-09-24 | Cathode arrangement for strong current electronic gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420090482 CN2735536Y (en) | 2004-09-24 | 2004-09-24 | Cathode arrangement for strong current electronic gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2735536Y true CN2735536Y (en) | 2005-10-19 |
Family
ID=35265405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420090482 Expired - Fee Related CN2735536Y (en) | 2004-09-24 | 2004-09-24 | Cathode arrangement for strong current electronic gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2735536Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268849A (en) * | 2013-04-28 | 2013-08-28 | 江苏达胜加速器制造有限公司 | Electronic gun for industrial electron irradiation accelerator |
| CN103376343A (en) * | 2012-04-28 | 2013-10-30 | 中国科学院电子学研究所 | Electronic gun system capable of moving inter-electrode distances for high current electron beam analysis meter |
| CN113628943A (en) * | 2021-08-26 | 2021-11-09 | 中国科学院空天信息创新研究院 | Plug-in type monocrystal boride cathode, preparation method thereof and electronic device |
-
2004
- 2004-09-24 CN CN 200420090482 patent/CN2735536Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376343A (en) * | 2012-04-28 | 2013-10-30 | 中国科学院电子学研究所 | Electronic gun system capable of moving inter-electrode distances for high current electron beam analysis meter |
| CN103376343B (en) * | 2012-04-28 | 2015-11-04 | 中国科学院电子学研究所 | A kind of removable die opening electron gun system for high current electron beam analyzer |
| CN103268849A (en) * | 2013-04-28 | 2013-08-28 | 江苏达胜加速器制造有限公司 | Electronic gun for industrial electron irradiation accelerator |
| CN113628943A (en) * | 2021-08-26 | 2021-11-09 | 中国科学院空天信息创新研究院 | Plug-in type monocrystal boride cathode, preparation method thereof and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |