CN201629490U - Vacuum clearance arrester - Google Patents
Vacuum clearance arrester Download PDFInfo
- Publication number
- CN201629490U CN201629490U CN2009201998607U CN200920199860U CN201629490U CN 201629490 U CN201629490 U CN 201629490U CN 2009201998607 U CN2009201998607 U CN 2009201998607U CN 200920199860 U CN200920199860 U CN 200920199860U CN 201629490 U CN201629490 U CN 201629490U
- Authority
- CN
- China
- Prior art keywords
- vacuum
- lightning arrester
- discharge tube
- arrester
- tube
- 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 - Fee Related
Links
- 239000004593 Epoxy Substances 0.000 claims description 5
- 239000011152 fibreglass Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920000260 silastic Polymers 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 238000009413 insulation Methods 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 5
- 230000015556 catabolic process Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Thermistors And Varistors (AREA)
Abstract
The utility model relates to a vacuum clearance arrester, which has good insulating ability. Compared with air clearance, the vacuum clearance arrester has the advantages of no atmospheric environmental impact, good vacuum discharge stability, small impact coefficient, good protection performance and simple installation. In order to reach the purposes, the vacuum clearance arrester comprises a tube body. The top part of the tube body is provided with an upper electrode, and the bottom part is provided with a lower electrode. A vacuum discharging tube is arranged in the tube body, and a plurality of resistance cards are arranged between the vacuum discharging tube and the lower electrode. As the structure is adopted, the vacuum discharging tube is arranged between the upper electrode and the lower electrode of the tube body of the vacuum clearance arrester to replace the air in the prior art. The structure avoids the breakdown possibility caused by impurities in the air, and the insulation effect of the vacuum clearance arrester is largely strengthened. A plurality of resistance cards are arranged between the vacuum discharging tube and the lower electrode, so the insulation effect is further strengthened, and meanwhile the vacuum discharging tube is positioned and protected.
Description
Technical field
The utility model relates to the protective device in a kind of electric power system, relates in particular to a kind of vacuum gap lightning arrester.
Background technology
The effect of lightning arrester is to be used for protecting the electrical equipment that various electric equipments are avoided lightning overvoltage, switching overvoltage in the electric power system, Frequency Transient Overvoltage is impacted and damage.The type of lightning arrester mainly contains protection gap, valve-type arrester and zinc oxide arrester.The protection gap is mainly used in the restriction atmospheric over-voltage, generally is used for distribution system, circuit and inlet wire of substation segment protect.Valve-type arrester and zinc oxide arrester are used for the protection in electric substation and power plant, are mainly used in the restriction atmospheric over-voltage at 500KV and following system, also will be used for limiting internal overvoltage or do the backup protection of internal overvoltage in extra high voltage system.Lightning arrester is connected between live wire and the ground usually, and is in parallel with protected equipment.But the volume of lightning arrester own is little in the prior art, and internal structure is more, and transportation is installed inconvenient.Protect in addition and often contain impurity in the air in the gap, influence the insulating properties of whole lightning arrester, discharge is also unstable.
The utility model content
The purpose of this utility model provides a kind of vacuum gap lightning arrester, has excellent insulation property, with the air gap relatively, is not subjected to atmosphere environment impact, the vacuum discharge good stability, and impact coefficient is little, and protective value is good and install simple.
For reaching described purpose, the utility model vacuum gap lightning arrester comprises stack shell, and the top of described stack shell is provided with top electrode, and the bottom is provided with bottom electrode, is provided with vacuum discharge tube in the stack shell, is provided with some sheet resistor sheets between described vacuum discharge tube and the bottom electrode.
Preferably, resistor disc is 3.Since the specification of vacuum gap lightning arrester might not, the specification of vacuum discharge tube also changes thereupon, thus resistor disc need according to vacuum discharge tube install the back the space under remaining fill out and put.3 sheet resistor sheets are installed in the vacuum gap lightning arrester commonly used just in time can be filled up this space.
Preferably, described top electrode bottom is provided with groove, and spring is housed in the groove, and spring is pressed on the vacuum discharge tube.Spring can be avoided colliding between vacuum discharge tube and the top electrode under transportation or other shock conditions.
Preferably, be provided with aluminium backing between described spring and the vacuum discharge tube.Aluminium backing has reduced the pressure of spring to applying on the vacuum discharge tube, further protects vacuum discharge tube.
Preferably, described stack shell is the epoxy fibreglass tube.The epoxy fibreglass tube is light cheap, and good insulation preformance is suitable for the vacuum gap lightning arrester.
Preferably, described stack shell is provided with silastic material outward.Silastic material is further reinforced insulation effect not only, can also play the effect of protection epoxy fibreglass tube simultaneously.
Owing to adopted described technical scheme, be provided with vacuum discharge tube between the stack shell upper/lower electrode of vacuum gap lightning arrester and replaced air of the prior art.Such structure has been avoided causing the possibility that punctures owing to contain impurity in the air.Strengthened the insulation effect of vacuum gap lightning arrester greatly.Be provided with some sheet resistor sheets between vacuum discharge tube and the bottom electrode and further strengthened insulation effect, also play the effect of location, protection vacuum discharge tube simultaneously.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the schematic diagram of the utility model vacuum gap lightning arrester.
Embodiment
As shown in Figure 1, the utility model vacuum gap lightning arrester comprises stack shell 2, the top of described stack shell 2 is provided with top electrode 8, the bottom is provided with bottom electrode 1, it is characterized in that: be provided with vacuum discharge tube 5 in the stack shell 2, be provided with some sheet resistor sheets 3 between described vacuum discharge tube 5 and the bottom electrode 1.Resistor disc 3 quantity are generally 3 according to the actual conditions setting.Described top electrode 8 bottoms are provided with groove, and spring 7 is housed in the groove, and spring 7 is pressed on the vacuum discharge tube 5.Be provided with aluminium backing 6 between described spring 7 and the vacuum discharge tube 5.Can not damage in these structure principal security transportation installation processes vacuum discharge tube 5.Described stack shell 2 is the epoxy fibreglass tube.Described stack shell is provided with silastic material 4 outward.
During work, top electrode 8 and bottom electrode 1 are as the device of lightning-arrest discharge.Usually top electrode 8 is connected on the lead that needs lightning protection as phase line of power, bottom electrode 1 is connected with ground wire.At first vacuum discharge tube 5 places between top electrode 8 and bottom electrode 1 puncture when big electric current is come; form short circuit in the vacuum discharge tube 5; electric current flows into bottom electrode 1 the earth that connects by vacuum discharge tube 5; and the voltage at vacuum discharge tube 5 two ends is very low at this moment, thereby reaches the purpose of protection circuit.Such vacuum gap lightning arrester is usually used in the lighting protection of high-tension line.Have very strong surge absorbability, promptly discharge capability is strong, through-current capacity is big, can accomplish more than the 100KA, and very high insulation resistance and very little parasitic capacitance, leakage current is little.Equipment to operate as normal can not bring any adverse effect.
Claims (6)
1. vacuum gap lightning arrester, comprise stack shell (2), the top of described stack shell (2) is provided with top electrode (8), and the bottom is provided with bottom electrode (1), it is characterized in that: be provided with vacuum discharge tube (5) in the stack shell (2), be provided with some sheet resistor sheets (3) between described vacuum discharge tube (5) and the bottom electrode (1).
2. vacuum gap lightning arrester as claimed in claim 1 is characterized in that, resistor disc (3) is 3.
3. vacuum gap lightning arrester as claimed in claim 1 is characterized in that, described top electrode (8) bottom is provided with groove, and spring (7) is housed in the groove, and spring (7) is pressed on the vacuum discharge tube (5).
4. vacuum gap lightning arrester as claimed in claim 3 is characterized in that, is provided with aluminium backing (6) between described spring (7) and the vacuum discharge tube (5).
5. as the described vacuum gap lightning arrester of claim 1-4, it is characterized in that described stack shell (2) is the epoxy fibreglass tube.
6. vacuum gap lightning arrester as claimed in claim 5 is characterized in that, described stack shell is provided with silastic material (4) outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201998607U CN201629490U (en) | 2009-11-19 | 2009-11-19 | Vacuum clearance arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201998607U CN201629490U (en) | 2009-11-19 | 2009-11-19 | Vacuum clearance arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629490U true CN201629490U (en) | 2010-11-10 |
Family
ID=43060887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201998607U Expired - Fee Related CN201629490U (en) | 2009-11-19 | 2009-11-19 | Vacuum clearance arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629490U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481821A (en) * | 2017-07-21 | 2017-12-15 | 国网湖南省电力公司 | A kind of lightning protection insulator |
| CN108933383A (en) * | 2018-06-21 | 2018-12-04 | 广西电网有限责任公司电力科学研究院 | A kind of arrester in built in air gap |
| CN109061404A (en) * | 2018-06-25 | 2018-12-21 | 国网湖南省电力有限公司 | Internal clearance lightning arrester discharge pipe is along face ablation test device and test method |
-
2009
- 2009-11-19 CN CN2009201998607U patent/CN201629490U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481821A (en) * | 2017-07-21 | 2017-12-15 | 国网湖南省电力公司 | A kind of lightning protection insulator |
| CN107481821B (en) * | 2017-07-21 | 2023-10-17 | 国网湖南省电力公司 | A kind of lightning protection insulator |
| CN108933383A (en) * | 2018-06-21 | 2018-12-04 | 广西电网有限责任公司电力科学研究院 | A kind of arrester in built in air gap |
| CN109061404A (en) * | 2018-06-25 | 2018-12-21 | 国网湖南省电力有限公司 | Internal clearance lightning arrester discharge pipe is along face ablation test device and test method |
| CN109061404B (en) * | 2018-06-25 | 2021-09-03 | 国网湖南省电力有限公司 | Method for testing surface ablation of discharge tube of inner gap lightning arrester |
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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: 20101110 Termination date: 20171119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |