CN2509759Y - Birds droppings proofing strap - Google Patents
Birds droppings proofing strap Download PDFInfo
- Publication number
- CN2509759Y CN2509759Y CN 01252065 CN01252065U CN2509759Y CN 2509759 Y CN2509759 Y CN 2509759Y CN 01252065 CN01252065 CN 01252065 CN 01252065 U CN01252065 U CN 01252065U CN 2509759 Y CN2509759 Y CN 2509759Y
- Authority
- CN
- China
- Prior art keywords
- metal cap
- birds droppings
- grading ring
- flashover
- fixture
- 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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- Catching Or Destruction (AREA)
Abstract
Disclosed is a guano-proof grading ring, comprising a metal covering and a fixing device. The metal covering is a ring typed integral plane or metal covering cast by metals, thereby being capable of effectively preventing the flashover caused by a string shape formed by approaching of guano or other contaminants, and further capable of effectively improving the electrical property and pollution-flashover voltage of the insulators and reducing the incidence rate of flashover. The utility model has the advantages of guano-resistance, corrosion prevention, no-staining, perfect effects of arc-starting, short discharging time, convenient installation, distinctive effects of voltage equalization and the like.
Description
Technical field
The utility model relates to a kind of annex that matches and use with power equipments such as post insulator, sleeve pipe, lightning arresters with circuit suspension type synthetic insulator and electric substation in the power transmission and transformation technical field.
Background technology
Be applied to the high-tension synthetic insulator of circuit and electric substation, because its good anti-fouling flashover performance and characteristics such as convenient for installation and maintenance, range of application is more and more extensive.Compare with traditional porcelain insulator, the synthetic insulator direct-to-ground capacitance is less, the voltage skewness, and internal field concentrates, and makes its premature aging, and flashover fault easily takes place, and influences the normal operation of transmission line, brings about great losses to national economy.Yet load onto grading ring in its one or both ends; just can greatly improve the distribution of its electric field strength, also play the effect of a kind of " striking " simultaneously, the arc duration is shortened; discharge occurs between ring and ring or ring and the metal termination, is not burnt in protection full skirt surface.And traditional grading ring has two kinds: the ring body that (1) adopts metal tube to form through bending; (2) the opening ring body of the circle that forms with casting of metals or die casting, ellipse or other geometry.The grading ring of above-mentioned two kinds of structures has a common feature, be exactly they all be the ring bodies that is installed on synthetic insulator two ends (particularly upper end), when birds droppings falls in the synthetic insulator upper end, very easily cause the generation of flashover fault on the high-tension line.
Technical scheme
The purpose of this utility model is to provide a kind of anti-birds droppings grading ring, it is except all pressures of having other grading ring and having, striking effect, can also prevent effectively that birds droppings from falling the external flashover that causes synthetic insulator along the surface, guarantee the safe operation of power circuit.
Technical solution of the present utility model is made up of metal cap, fixture etc.Metal cap is with integral planar that metal material is cast or machining forms or taper seat, and stretching out from root is provided with hole and slit, and a hole that is used to be inserted in insulator upper end gold utensil is left at the center.Jockey is arranged on the metal cap, and it and fixture match, and fixture is fixed on metal cap on the upper end gold utensil of insulator.
Said fixture can be the anchor ear form, also can be the U-bolt form.
The utility model is compared with traditional grading ring, has following advantage:
(1) good looking appearance, in light weight, easy for installation, corrosion-resistant under atmospheric environment, non-corrosive, life-span are long.
(2) when external flashover takes place, the striking better effects if, discharge time is shorter.
(3) can prevent effectively that foreign matter such as birds droppings from falling into insulator, guarantee that technical indicators such as insulator electrical property and pollution flashover voltage satisfy the line design requirement, avoid pollution flashover accident to take place.
Description of drawings
Fig. 1 is anti-birds droppings grading ring front view;
Fig. 2 is anti-birds droppings grading ring vertical view.
Specific embodiments
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1 and Figure 2, metal cap 1 is cast for metal material waters or die casting forms the annular conical surface or plane, the plane or the conical surface are that two planes parallel by the above and below or that form certain angle constitute, internal diameter size is determined according to the insulator hardware size, outside dimension is decided by the requirement of electric property, and on the outer rim or the upper and lower surface of metal cap is provided with the semicircular arc reinforcement 3 that is used to strengthen its mechanical performance.Two rectangles or other shape connecting plate 4 are arranged on the metal cap, a connecting hole is arranged respectively on it, be used for fixture 2 grading ring being fixed to insulator metal termination, fixture is made up of connecting bolt and anchor ear.
Claims (5)
1, a kind of anti-birds droppings grading ring is characterized in that: comprise metal cap, fixture, metal cap (1) is from the outward extending metallic object that does not have hole and slit of root.
2, as the said anti-birds droppings grading ring of claim 1, it is characterized in that: a hole is left at its metal cap (1) center, so that be inserted in the upper end gold utensil of insulator.
3, as the said anti-birds droppings grading ring of claim 1, it is characterized in that: its metal cap (1) can be a plane, also can be a taper seat, and the reinforcement (3) that is used to strengthen its mechanical strength can be left in the outer of metal cap (1) or upper and lower surface.
4, as the said anti-birds droppings grading ring of claim 1, it is characterized in that: its metal cap (1) is an integral body, leave connecting plate (4) on the metal cap (1), it and fixture (2) match, and fixture (2) is fixed on metal cap on the upper end gold utensil of insulator.
5, as the said anti-birds droppings grading ring of claim 1, it is characterized in that: fixture (2) is made up of connecting bolt and anchor ear or U-bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01252065 CN2509759Y (en) | 2001-09-30 | 2001-09-30 | Birds droppings proofing strap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01252065 CN2509759Y (en) | 2001-09-30 | 2001-09-30 | Birds droppings proofing strap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2509759Y true CN2509759Y (en) | 2002-09-04 |
Family
ID=33661858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01252065 Expired - Lifetime CN2509759Y (en) | 2001-09-30 | 2001-09-30 | Birds droppings proofing strap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2509759Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376431A (en) * | 2010-08-26 | 2012-03-14 | 苏州华电电气股份有限公司 | Low-partial discharge simple high-voltage leading-out bushing |
| CN102986104A (en) * | 2010-07-01 | 2013-03-20 | 库柏技术公司 | Grading devices for a high voltage apparatus |
| CN103093905A (en) * | 2013-03-01 | 2013-05-08 | 湖南省电力公司科学研究院 | Anti-icing voltage-sharing plate |
| CN103579981A (en) * | 2013-08-27 | 2014-02-12 | 国家电网公司 | Novel butting type bird resisting cover for high-voltage transmission line |
| CN103783029A (en) * | 2012-10-28 | 2014-05-14 | 薛振安 | Anti-bird device |
-
2001
- 2001-09-30 CN CN 01252065 patent/CN2509759Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102986104A (en) * | 2010-07-01 | 2013-03-20 | 库柏技术公司 | Grading devices for a high voltage apparatus |
| CN102986104B (en) * | 2010-07-01 | 2015-05-13 | 库柏技术公司 | Grading devices for a high voltage apparatus |
| CN102376431A (en) * | 2010-08-26 | 2012-03-14 | 苏州华电电气股份有限公司 | Low-partial discharge simple high-voltage leading-out bushing |
| CN103783029A (en) * | 2012-10-28 | 2014-05-14 | 薛振安 | Anti-bird device |
| CN103783029B (en) * | 2012-10-28 | 2015-11-25 | 薛振安 | A kind of bird-proof device |
| CN103093905A (en) * | 2013-03-01 | 2013-05-08 | 湖南省电力公司科学研究院 | Anti-icing voltage-sharing plate |
| CN103579981A (en) * | 2013-08-27 | 2014-02-12 | 国家电网公司 | Novel butting type bird resisting cover for high-voltage transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110930 Granted publication date: 20020904 |