CN2655393Y - Composite isolator with internal umbrella-shape structure - Google Patents
Composite isolator with internal umbrella-shape structure Download PDFInfo
- Publication number
- CN2655393Y CN2655393Y CN 200320115427 CN200320115427U CN2655393Y CN 2655393 Y CN2655393 Y CN 2655393Y CN 200320115427 CN200320115427 CN 200320115427 CN 200320115427 U CN200320115427 U CN 200320115427U CN 2655393 Y CN2655393 Y CN 2655393Y
- Authority
- CN
- China
- Prior art keywords
- full skirt
- umbrella skirt
- insulator
- skirt
- interior
- 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
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 239000012212 insulator Substances 0.000 claims description 47
- 238000010276 construction Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 239000011810 insulating material Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000009422 external insulation Methods 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Landscapes
- Insulators (AREA)
Abstract
A composite insulation end with an umbrella skirt structure used in a high pressure electric transmission circuit, comprising a core bar, an umbrella skirt outside the core bar and metal ends on two ends of the core bar, wherein the umbrella is added with an inner umbrella skirt, the surface of the inner umbrella skirt is coated with a metal coating, and an outer umbrella skirt is circled outside the inner umbrella skirt. The utility model adds the inner umbrella skirt for the umbrella skirt, which increases the metal portion of the composite insulation end, improves the problem that the electrode field of the traditional composite insulation end is quite non-uniform, increases the machinery strength of the umbrella skirt, decreases the uncertain flashover of the composite insulation end, increases the forcing portion of the core bar, increases the machinery strength of the core bar, increases the outer insulation ability of the insulation end, and forms a back protection after the outer umbrella skirt is old or damaged.
Description
Technical field the utility model relates to the used insulator of a kind of ultra-high-tension power transmission line
The effect of background technology insulator is that current potential conductor inequality is separated, and not allowing has electric current to pass through between the conductor, to keep current potentials different between them.Insulator is generally made by the high insulating material of resistance, can isolate conductor charged or different potentials with this material, and electric current can be circulated by certain direction.
According to the difference of insulating material, insulator can be divided into porcelain insulator, glass insulator and composite insulator three major types.Composite insulator is made of plug, full skirt and metal termination three parts.The full skirt of composite insulator is an insulator external insulation part, its role is to provide leakage distance of necessity and the invasion and attack that the protection plug exempts from atmospheric environment, so that insulator keeps sufficiently high pollution flashover voltage and insulation property reliably and with long-term.
The basic demand of full skirt condition of work and full skirt material is:
1, gas performance requirement
What insulator bore when normally moving is operating voltage, but, because a variety of causes, the phenomenon that raises in short-term appears in voltage in the electric power system sometimes, promptly produces overvoltage, though superpotential action time is very short, but superpotential numerical value substantially exceeds normal working voltage, thereby the destruction of easily causing insulation, so insulator except that the continuous action that should be able to tolerate operating voltage, also must can tolerate superpotential effect;
High-tension insulator is in operation usually also can be subjected to the effect of various filths and moist atmosphere condition, and for example therefore mist, drizzle, clog snow, ice, condensation, industrial filth and salt fog etc. require the full skirt of insulator should have enough durability against pollutions;
Under disadvantageous condition, local arc may appear in the surface of insulator, and under its effect, might be burnt and residual trace occur conducting electricity in the surface, reduced the electrical strength of insulator, so require the full skirt of insulator should have very high anti-electric arc ability;
1, hot property requirement
Insulating material all has definite temperature capacity, and when variations in temperature, insulating material inside will produce very big stress, causes insulator breakdown, therefore requires the full skirt of insulator should have the ability of the cold-resistant hot sudden turn of events;
2, learn stability
The insulator of working out of doors should be able to withstand long term exposure the erosion of atmospheric factors such as sunshine, wind sand, misty rain, ice and snow, at the insulator of plateau work, must consider the influence of the change of air pressure, temperature, humidity to insulating material.The insulator of under specific condition, working, for example at the environment that contains the organic chemistry etchant gas or at the insulator of humid tropics environmental work, also should be as the case may be, guarantee that it has enough tolerances to various adverse factors, so, should require enough chemical stabilities to the full skirt of insulator.
The summary of the invention the purpose of this utility model is at above-mentioned present situation; aim to provide a kind of Electric Field Distribution evenly, plug, the mechanical strength height of full skirt, the unidentified flashover that can reduce composite insulator, external insulation ability be strong, aging or damage has the composite insulator that interior umbrella skirt construction is arranged of backup protection effect to external shed.
The implementation of the utility model purpose is, the composite insulator of interior umbrella skirt construction is arranged, and is made of the full skirt of plug 1, mandrel outer and the metal termination at plug two ends.The interior full skirt 3 that is formed by organic resin material is arranged on the plug, and interior full skirt surface coverage has metal coating 4, the peripheral external shed 2 of interior full skirt.
Full skirt of the present utility model is made of inside and outside full skirt, adopts the utility model, and following advantage is arranged:
1, traditional composite insulator is single structure, only there is the gold utensil termination at two up and down, they and middle plug and the common interelectrode capacitance that constitutes of full skirt are much smaller than the porcelain of equal length, the electric capacity of glass suspension insulator string, therefore the electric field problem of non-uniform of composite insulator is very distinct issues, interior umbrella skirt construction has increased the metal part of composite insulator, has improved the uneven problem of electric field pole of conventional composite insulator;
2, full skirt is aging is the insulation fault that occurs in the composite insulator running, often with phenomenons such as full skirt variable color hardening, crackings, cause core rod of insulator to make moist, the line accident rate is increased, the external insulation ability of insulator has been strengthened in the existence of interior full skirt, forms the backup protection after the aging or damage of a kind of external shed;
3, traditional external shed has flexibility, and it will have better mechanical strength under the support of interior full skirt;
4, the shape of the full skirt of conventional composite insulator and layout all adopt the planform on bar-shaped porcelain insulator surface basically, full skirt is less than normal, spacing between the full skirt is also less than normal, can cause between full skirt creepage distance by the air short circuit with arcing short circuit between full skirt takes place like this, the mechanical strength of external shed has been strengthened in the existence of interior full skirt, the outer umbrella disk structure of gamp footpath and long spacing can be provided, reduce the edge effect of full skirt, reduce the unidentified flashover of composite insulator;
5, traditional composite insulator only depends on plug to bear mechanical load, and interior umbrella skirt construction has increased the part of the force of plug, has increased the mechanical strength of plug;
Description of drawings
Accompanying drawing is the utility model part section front view
Embodiment
The utility model is made of the full skirt of plug 1, mandrel outer and the metal termination at plug two ends, and full skirt is made of inside and outside full skirt 3,2, and interior full skirt 3 numbers are less than or equal to the number of external shed 2.The metal coating 4 of interior full skirt surface coverage is the coating that covers with coating method, and coating layer thickness is 1 μ m-800 μ m.Interior full skirt shape in the external shed of same composite insulator shape such as can be or does not wait shape, and it is isometrical or not isometrical that interior full skirt diameter can be, and interior full skirt spacing can be equidistantly or be not equidistant.
Claims (4)
- The composite insulator that 1, interior umbrella skirt construction is arranged, constitute by the full skirt of plug (1), mandrel outer and the metal termination at plug two ends, it is characterized in that having on the plug the interior full skirt (3) that is formed by organic resin material, interior full skirt surface coverage has metal coating (4), the peripheral external shed (2) of interior full skirt.
- 2, composite insulator as claimed in claim 1 is characterized in that interior full skirt (3) number is less than or equal to the number of external shed (2).
- 3, composite insulator as claimed in claim 1 is characterized in that the metal coating (4) of interior full skirt (2) surface coverage is the coating with the coating method covering, and coating layer thickness is 1 μ m-800 μ m.
- 4, composite insulator as claimed in claim 3, it is characterized in that interior full skirt (3) shape in the external shed (2) of same composite insulator shape such as can be or do not wait shape, interior full skirt diameter can be isometrical or not isometrical, and interior full skirt spacing can be equidistantly or be not equidistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320115427 CN2655393Y (en) | 2003-10-10 | 2003-10-10 | Composite isolator with internal umbrella-shape structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320115427 CN2655393Y (en) | 2003-10-10 | 2003-10-10 | Composite isolator with internal umbrella-shape structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2655393Y true CN2655393Y (en) | 2004-11-10 |
Family
ID=34345876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320115427 Expired - Lifetime CN2655393Y (en) | 2003-10-10 | 2003-10-10 | Composite isolator with internal umbrella-shape structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2655393Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110828075A (en) * | 2019-11-26 | 2020-02-21 | 国网电力科学研究院武汉南瑞有限责任公司 | A high-speed EMU roof insulator |
| CN112384997A (en) * | 2018-07-02 | 2021-02-19 | Abb电网瑞士股份公司 | Insulator with resistivity gradient |
-
2003
- 2003-10-10 CN CN 200320115427 patent/CN2655393Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112384997A (en) * | 2018-07-02 | 2021-02-19 | Abb电网瑞士股份公司 | Insulator with resistivity gradient |
| US11798711B2 (en) | 2018-07-02 | 2023-10-24 | Hitachi Energy Switzerland Ag | Insulator with resistivity gradient |
| CN110828075A (en) * | 2019-11-26 | 2020-02-21 | 国网电力科学研究院武汉南瑞有限责任公司 | A high-speed EMU roof insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20051228 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |