CN202758842U - High frequency ceramic gas discharge tube - Google Patents
High frequency ceramic gas discharge tube Download PDFInfo
- Publication number
- CN202758842U CN202758842U CN 201220166740 CN201220166740U CN202758842U CN 202758842 U CN202758842 U CN 202758842U CN 201220166740 CN201220166740 CN 201220166740 CN 201220166740 U CN201220166740 U CN 201220166740U CN 202758842 U CN202758842 U CN 202758842U
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- electrode
- gas discharge
- high frequency
- outer electrode
- discharge tube
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Abstract
The utility model relates to a high frequency ceramic gas discharge tube. The high frequency ceramic gas discharge tube comprises a tubular outer electrode and a cylindrical inner electrode which is coaxially arranged in the outer electrode, wherein the two ends of the tubular outer electrode are sealed and closed by welded ceramic wafers, an inner electrode and an outer electrode are separated, a gas medium is filled between the inner electrode and the outer electrode, and metal oxide coatings are respectively coated on the outer surface of the inner electrode and the inner surface of the outer electrode; and a gap between the inner electrode and the outer electrode is 2.3+/-0.01mm or 3.5+/-0.01mm. Appropriate electrode structure and dimension are selected, so a favourable condition is created for improving the working frequency of a product; and the dielectric constant of the ceramic wafer is accurately matched with the polar distance of an electrode, and meanwhile the gas medium with special mixed ingredients is matched, so the working frequency of the product with the characteristic impedance being 50ohm (or 75ohm) under a direct current voltage of 90V can reach to 20GHz, and the working frequency is far higher than that of the existing product.
Description
Technical field
The utility model relates to a kind of gas discharge tube as voltage protection device, specifically a kind of high frequency ceramic gas discharge lamp.
Background technology
Gas discharge tube is low-voltage electrical apparatus overvoltage protecting device commonly used, also is widely used in the lightning protection field.Its structure mostly is plate, although interelectrode capacitance is lower than 1.5PF, if be applied to the lightning protection of the higher radio frequency feed line of operating frequency or helpless.The existing very large lifting of the operating frequency of domestic existing Coaxle gas discharge tube but also do not reach the level of 3GHz; and be higher than the radio-frequency (RF) coaxial gas discharge tube of 3GHz; present external product is strict embargo to China, is difficult to satisfy the user demand of the low-voltage electrical apparatus system of some higher protection requirements.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of high frequency ceramic gas discharge lamp that can obtain higher operational frequency is provided.
High frequency ceramic gas discharge lamp of the present utility model includes external electrode and the coaxial columned electrode that is positioned at external electrode of a tubulose, the two ends of outer tubular electrode are hermetically enclosed and separate inside and outside electrode by the potsherd of welding, between inside and outside electrode, be filled with gas medium, be coated with respectively coating of metal oxides between interior electrode outer surface and the external electrode inner surface; Gap between described interior electrode and the external electrode is 2.3 ± 0.01mm or 3.5 ± 0.01mm.
The material of described potsherd is beryllium oxide ceramics.
Described gas medium is the neon hydrogen mixed gas, and the volume ratio of neon and hydrogen is 95:5.
The utility model has been created advantage by selecting suitable electrode structure and being of a size of the operating frequency that improves product; Owing to adopt the potsherd of special niberlox, make the dielectric constant of potsherd and the anode-cathode distance exact matching of electrode, the gas medium that cooperates simultaneously the Special Mixed composition, make the operating frequency of product under the 90V direct voltage of 50 ohm of characteristic impedances and 75 ohm can reach 20GHz, be higher than existing product far away.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in the figure, among the utility model embodiment, include external electrode 1 and the coaxial columned electrode 2 that is positioned at external electrode of a tubulose, the two ends of outer tubular electrode are hermetically enclosed and separate inside and outside electrode by the potsherd 3 of welding, between inside and outside electrode, be filled with gas medium 4, be coated with respectively coating of metal oxides between interior electrode outer surface and the external electrode inner surface; Gap between interior electrode and the external electrode is 2.3 ± 0.01mm or 3.5 ± 0.01mm; The material of potsherd is beryllium oxide ceramics; Gas medium is the neon hydrogen mixed gas, and the volume ratio of neon and hydrogen is 95:5.
Adopt the high frequency ceramic gas discharge lamp product of said structure and material, test through reality, (gap between the counter electrode is 2.3 ± 0.01mm) and 75 ohm, and (gap between the counter electrode is 3.5 ± 0.01mm), and the operating frequency under the 90V direct voltage all can reach 20GHz for 50 ohm of characteristic impedances.
Claims (2)
1. high frequency ceramic gas discharge lamp, it is characterized in that: it includes external electrode (1) and the coaxial columned electrode (2) that is positioned at external electrode of a tubulose, the two ends of outer tubular electrode are hermetically enclosed and separate inside and outside electrode by the potsherd (3) of welding, between inside and outside electrode, be filled with gas medium (4), be coated with respectively coating of metal oxides between interior electrode outer surface and the external electrode inner surface; Gap between interior electrode and the external electrode is 2.3 ± 0.01mm or 3.5 ± 0.01mm.
2. high frequency ceramic gas discharge lamp according to claim 1, it is characterized in that: the material of potsherd is beryllium oxide ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220166740 CN202758842U (en) | 2012-04-19 | 2012-04-19 | High frequency ceramic gas discharge tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220166740 CN202758842U (en) | 2012-04-19 | 2012-04-19 | High frequency ceramic gas discharge tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758842U true CN202758842U (en) | 2013-02-27 |
Family
ID=47738010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220166740 Expired - Fee Related CN202758842U (en) | 2012-04-19 | 2012-04-19 | High frequency ceramic gas discharge tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758842U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637564A (en) * | 2012-04-19 | 2012-08-15 | 镇江市电子管厂 | High frequency ceramic gas discharge tube |
| CN106252180A (en) * | 2016-08-04 | 2016-12-21 | 中国石油化工股份有限公司 | A kind of Novel gas discharge tube for coaxial cable |
-
2012
- 2012-04-19 CN CN 201220166740 patent/CN202758842U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637564A (en) * | 2012-04-19 | 2012-08-15 | 镇江市电子管厂 | High frequency ceramic gas discharge tube |
| CN106252180A (en) * | 2016-08-04 | 2016-12-21 | 中国石油化工股份有限公司 | A kind of Novel gas discharge tube for coaxial cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20160419 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |