CN202771875U - Pressure relief type arrestor core structure - Google Patents
Pressure relief type arrestor core structure Download PDFInfo
- Publication number
- CN202771875U CN202771875U CN 201220382361 CN201220382361U CN202771875U CN 202771875 U CN202771875 U CN 202771875U CN 201220382361 CN201220382361 CN 201220382361 CN 201220382361 U CN201220382361 U CN 201220382361U CN 202771875 U CN202771875 U CN 202771875U
- Authority
- CN
- China
- Prior art keywords
- pressure release
- earth pressure
- lightning arrester
- core body
- end electrode
- 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
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Abstract
The utility model relates to a pressure relief type arrestor core structure comprising a resistor disc column, an upper-end electrode and a lower-end electrode. The upper-end electrode and the lower-end electrode are respectively arranged at two ends of the resistor disc column, and beveled kidney-shaped pressure relief grooves are added outside of an insulating layer of a core column assembled by the upper-end electrode, the resistor disc column and the lower-end electrode. The pressure relief type arrestor core structure is capable of relieving pressure ahead of time, so that comminuted explosion accident of the arrestor can be avoided.
Description
Technical field
The utility model relates to a kind of lightning arrester, especially relates to a kind of mesolow lightning arrester core body structure with release structure for pressure.
Background technology
The mesolow composite greatcoat type metal-oxide lighting arrester is that the power transmission and transforming equipment of protection electric power system is avoided the damages such as atmospheric over-voltage or switching overvoltage and the most effectively protected electrical equipment.The type lightning arrester is general all reasonable not without pressure releasing structure or release structure for pressure at present, and internal pressure can not get discharging when the lightning arrester accident, can cause the comminuted blast of lightning arrester, easily causes the injury of personnel or equipment.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of pressure relief effect better lightning arrester core body structure for above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above the technical scheme that adopts: earth pressure release groove lightning arrester core body structure of the present utility model, the core body outside is coated with insulating barrier, it is characterized in that vertically being distributed with the earth pressure release groove in the outer peripheral wall of insulating barrier, form the better novel pressure release type lightning arrester core body of explosion-proof effect.
Described insulating barrier is the integrated mold pressing moulding of release groove, and the earth pressure release groove has many, circumferentially evenly distributes.The earth pressure release groove is designed to strip, and its cross section is designed to the kidney-shaped that both sides are the inclined-plane, and inclination angle of inclined plane can be designed as 150 °.The insulating barrier at release groove place remains with the thickness of 1.8～2.1mm.
Compared with prior art, the utility model has the advantage of: the utility model makes lightning arrester strengthen pressure relief effect under the prerequisite that guarantees original performance by setting up the earth pressure release groove at the insulating barrier outer wall.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the profile schematic diagram of the utility model embodiment.
Fig. 3 is the view in transverse section of insulating barrier.
Fig. 4 is the I place enlarged drawing of Fig. 3.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, lightning arrester core body of the present utility model is to be made of upper end electrode 1, resistor disc post 2, insulating barrier 3 and lower end electrode 5 etc., upper end electrode 1 and lower end electrode 5 are separately positioned on two of resistor disc post 2, resistor disc post 2 is to be formed by stacking by a plurality of resistor discs, and as required, inside is added with and adjusts pad 4.By upper end electrode 1, resistor disc post 2, adjust pad 4 and lower end electrode 5 is assembled into the stem stem shape, coated insulation layer 3 externally again.
Insulating barrier 3 adopts the mode of mold pressing injection moulding, increased several earth pressure release grooves 6 man-hour adding, earth pressure release groove 6 is pressed the insulating barrier outer wall and is circumferentially evenly distributed, and the earth pressure release groove of illustrating among the present embodiment figure has 6, angle β between each groove is 60 °, such as Fig. 2, shown in Figure 3.Certainly as required, the number of groove can increase and decrease.Earth pressure release groove 6 is designed to longitudinally strip groove, and the cross section of groove is the kidney-shaped that both sides are the inclined-plane, and the inclination alpha on inclined-plane can be designed to 150 °.And the insulating barrier at groove place remains with the thickness (also being the distance between groove bottom and the resistor disc surface) of 2.0mm (considering to be chosen in mismachining tolerance between 1.8～2.1mm), as shown in Figure 4.The utility model makes accurately release pressure of lightning arrester by the design of inclined-plane kidney-shaped earth pressure release groove like this, avoids lightning arrester that comminuted explosion accident occurs.
Claims (6)
1. earth pressure release type lightning arrester core body structure, the core body outside is coated with insulating barrier, it is characterized in that: the outer peripheral wall at insulating barrier vertically is distributed with the earth pressure release groove.
2. earth pressure release type lightning arrester core body structure as claimed in claim 1, it is characterized in that: described earth pressure release groove is strip, its cross section is the kidney-shaped that both sides are the inclined-plane.
3. earth pressure release type lightning arrester core body structure as claimed in claim 1 or 2, it is characterized in that: the thickness of insulating layer at release groove place is 1.8～2.1mm.
4. earth pressure release type lightning arrester core body structure as claimed in claim 3 is characterized in that: be evenly distributed with 6 earth pressure release grooves on the described insulating barrier outer peripheral wall.
5. earth pressure release type lightning arrester core body structure as claimed in claim 2, it is characterized in that: described inclination angle of inclined plane is 150 °.
6. earth pressure release type lightning arrester core body structure as claimed in claim 4, it is characterized in that: described insulating barrier is the integrated mold pressing moulding of release groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382361 CN202771875U (en) | 2012-08-03 | 2012-08-03 | Pressure relief type arrestor core structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220382361 CN202771875U (en) | 2012-08-03 | 2012-08-03 | Pressure relief type arrestor core structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202771875U true CN202771875U (en) | 2013-03-06 |
Family
ID=47778428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220382361 Expired - Fee Related CN202771875U (en) | 2012-08-03 | 2012-08-03 | Pressure relief type arrestor core structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202771875U (en) |
-
2012
- 2012-08-03 CN CN 201220382361 patent/CN202771875U/en not_active Expired - Fee Related
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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: 20130306 Termination date: 20150803 |
|
| EXPY | Termination of patent right or utility model |