CN202839526U - Low impact flashover voltage gas discharge tube - Google Patents
Low impact flashover voltage gas discharge tube Download PDFInfo
- Publication number
- CN202839526U CN202839526U CN201220461202.2U CN201220461202U CN202839526U CN 202839526 U CN202839526 U CN 202839526U CN 201220461202 U CN201220461202 U CN 201220461202U CN 202839526 U CN202839526 U CN 202839526U
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- CN
- China
- Prior art keywords
- porcelain tube
- tube
- flashover voltage
- gas discharge
- low impact
- Prior art date
- 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 - Lifetime
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Abstract
The utility model relates to a low impact flashover voltage gas discharge tube. The low impact flashover voltage gas discharge tube comprises a porcelain tube, discharge electrodes, a conductive belt, and soldering sheets. Gas is filled inside the inner cavity of the porcelain tube. The conductive belt is arranged on the inner wall of the porcelain tube. The discharge electrodes are placed inside the porcelain tube and respectively sealed on the two end surfaces of the porcelain tube through the soldering sheets. The low impact flashover voltage gas discharge tube is characterized in that conducting layers are arranged on the outer wall of the porcelain tube, and the conducting layers are connected with sealing surfaces of the end surfaces of the porcelain tube to form a whole. According to the utility model, the conducting layers are arranged on the outer wall of the porcelain tube so that the electric field distribution is changed; the electric field intensity of tips of the conductive belt is increased; the total number of collisions of electrons and ions with gas molecules is increased; the ionization probability is substantially increased; and the rapid increasing of impact flashover voltage due to the coverage of the conductive belt on the inner wall of the porcelain tube can be effectively offset. The low impact flashover voltage gas discharge tube is simple in structure and reliable in operation.
Description
Technical field
The utility model relates to gas discharge tube, specifically a kind of low impact flashover voltage gas discharge tube.
Background technology
The thunderstorm number of times of placing on record at present with 10 years before compare and approximately have more twice, protection people and electric equipment are avoided the voltage surge impact and have been become especially important.Along with low cost and the Miniaturization Design trend of equipment, the withstand voltage level of employed components and parts also reduces gradually, so more and more higher to the requirement of the gas discharge tube of bearing protective effect.Usually weigh the level of protection of gas discharge tube in the practice with impact flashover voltage: impact flashover voltage is lower, and the level of protection of gas discharge tube is higher.
Existing gas discharge tube initial impact puncture voltage still can meet the demands; but after lightning current impacts; because discharge tube internal electron emitting material and the metal discharge utmost point can be splashed to ceramic inner walls under the double action of high-speed and high-density electronic impact and high temperature evaporation; cause porcelain tube inwall conductive strips to be shielded by splash; the conductive strips action of points descends greatly; function as trigger mechanism can weaken or disappear greatly; thereby impact flashover voltage sharply raises and discreteness significantly becomes large, and the level of protection of gas discharge tube sharply reduces.Therefore design a kind of not affected by lightning current and simple in structure, reliable low impact flashover voltage gas discharge tube very necessary.
Summary of the invention
The purpose of this utility model provides and a kind ofly not affected by lightning current and simple in structure, reliable low impact flashover voltage gas discharge tube.
For achieving the above object, the utility model adopts following technical scheme: a kind of low impact flashover voltage gas discharge tube, comprise porcelain tube, discharge electrode, conductive strips and solder sheet, the porcelain tube inner chamber is filled with gas, the porcelain tube inwall is provided with conductive strips, discharge electrode place in the porcelain tube and by solder sheet respectively sealing-in on two end faces of porcelain tube, it is characterized in that being provided with conductive layer on the outer wall of porcelain tube, the sealing surface of conductive layer and porcelain tube end face links into an integrated entity.
Further, in such scheme, described conductive layer is two, and described two conductive layers link into an integrated entity with the sealing surface at porcelain tube two ends respectively, and the insulation distance between described two conductive layers is greater than described low impact flashover voltage gas discharge tube internal discharge gap.
Further, in such scheme, described conductive layer is close on the outer wall of porcelain tube.
Further, in such scheme, described conductive layer is tubular.
Further, in such scheme, described conductive layer and sealing surface are the same metal.
The utility model adopts on the porcelain tube outer wall conductive layer is set, changed Electric Field Distribution, increased the electric field strength at conductive strips tips, the building number of times that bumps that electronics, ion and gas molecule are total increases, the ionization probability increases greatly, has effectively remedied because porcelain tube inwall conductive strips are capped the impact flashover voltage that causes sharply to raise.The utility model is simple in structure, reliable.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the lightning test comparison diagram of embodiment of the utility model and prior art.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but this embodiment should not be construed as restriction of the present utility model.
The utility model comprises porcelain tube 1, discharge electrode 2, conductive strips 3 and solder sheet 6, porcelain tube 1 inner chamber is filled with gas 4, porcelain tube 1 inwall is provided with conductive strips 3, discharge electrode 2 places in the porcelain tube 1 and passes through solder sheet 6 difference sealing-ins on two end faces of porcelain tube 1, be provided with conductive layer 5 on the outer wall of porcelain tube 1, conductive layer 5 links into an integrated entity with the sealing surface of porcelain tube 1 end face.
Preferred embodiment is, in such scheme, described conductive layer 5 is two, and described two conductive layers 5 link into an integrated entity with the sealing surface at porcelain tube 1 two ends respectively, and the insulation distance between described two conductive layers 5 is greater than described low impact flashover voltage gas discharge tube internal discharge gap.
Preferred embodiment is that in such scheme, described conductive layer 5 is close on the outer wall of porcelain tube 1.
Preferred embodiment is that in such scheme, described conductive layer 5 is tubular.
Preferred embodiment is, a kind of low impact flashover voltage gas discharge tube, comprise porcelain tube 1, discharge electrode 2, conductive strips 3 and solder sheet 6, porcelain tube 1 inner chamber is filled with gas 4, porcelain tube 1 inwall is provided with conductive strips 3, discharge electrode 2 places in the porcelain tube 1 and passes through solder sheet 6 difference sealing-ins on two end faces of porcelain tube 1, discharge tube internal discharge gap is 1 millimeter, be provided with two conductive layers 5 on the outer wall of porcelain tube 1, two conductive layers 5 link into an integrated entity with the sealing surface at porcelain tube 1 two ends respectively, insulation distance between described two conductive layers 5 is 4 millimeters, and described two conductive layers 5 are tubular and are close on the outer wall of porcelain tube 1, and described conductive layer 5 and sealing surface are metallic nickel.
The comparing result that present embodiment and prior art are carried out lightning test as shown in Figure 2, among Fig. 2, transverse axis is the impact flashover voltage value, and the longitudinal axis is percentage, the right side solid line is the impact flashover voltage parameter distribution of prior art, and left-hand broken line is the impact flashover voltage parameter distribution of present embodiment.As seen from the figure, behind employing the utility model, impact flashover voltage mean value has obvious decline, reduces to 848.8V by 1081V, and discreteness obviously improves, and the impact flashover voltage maximum becomes 984V by 1400V, and standard deviation becomes 80.17 by 118.7.
The content that is not described in detail in this specification belongs to the known prior art of those skilled in the art.
Claims (5)
1. one kind low impact flashover voltage gas discharge tube, comprise porcelain tube (1), discharge electrode (2), conductive strips (3) and solder sheet (6), porcelain tube (1) inner chamber is filled with gas (4), porcelain tube (1) inwall is provided with conductive strips (3), discharge electrode (2) places in the porcelain tube (1) and passes through the sealing-in of solder sheet (6) difference on two end faces of porcelain tube (1), it is characterized in that: be provided with conductive layer (5) on the outer wall of porcelain tube (1), conductive layer (5) links into an integrated entity with the sealing surface of porcelain tube (1) end face.
2. low impact flashover voltage gas discharge tube according to claim 1, it is characterized in that: described conductive layer (5) is two, described two conductive layers (5) link into an integrated entity with the sealing surface at porcelain tube (1) two ends respectively, and the insulation distance between described two conductive layers (5) is greater than described low impact flashover voltage gas discharge tube internal discharge gap.
3. low impact flashover voltage gas discharge tube according to claim 1 and 2, it is characterized in that: described conductive layer (5) is close on the outer wall of porcelain tube (1).
4. low impact flashover voltage gas discharge tube according to claim 3, it is characterized in that: described conductive layer (5) is tubular.
5. low impact flashover voltage gas discharge tube according to claim 3, it is characterized in that: described conductive layer (5) and sealing surface are the same metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220461202.2U CN202839526U (en) | 2012-09-10 | 2012-09-10 | Low impact flashover voltage gas discharge tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220461202.2U CN202839526U (en) | 2012-09-10 | 2012-09-10 | Low impact flashover voltage gas discharge tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202839526U true CN202839526U (en) | 2013-03-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220461202.2U Expired - Lifetime CN202839526U (en) | 2012-09-10 | 2012-09-10 | Low impact flashover voltage gas discharge tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202839526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891057A (en) * | 2012-09-10 | 2013-01-23 | 爱普科斯电子(孝感)有限公司 | Gas discharging tube with low impact puncture voltage |
-
2012
- 2012-09-10 CN CN201220461202.2U patent/CN202839526U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891057A (en) * | 2012-09-10 | 2013-01-23 | 爱普科斯电子(孝感)有限公司 | Gas discharging tube with low impact puncture voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 432104 No. 257-1 Mayor Zhengzheng Road, Xiaogan City, Hubei Province Patentee after: Dongdianhua Electronics (Xiaogan) Co.,Ltd. Address before: 432104 No. 257-1 Mayor Zhengzheng Road, Xiaogan City, Hubei Province Patentee before: EPCOS ELECTRONIC (XIAOGAN) Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
|
| CX01 | Expiry of patent term |