CN1239803A - Internally wedged composite insulator with high long-term strength - Google Patents
Internally wedged composite insulator with high long-term strength Download PDFInfo
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- CN1239803A CN1239803A CN 98110308 CN98110308A CN1239803A CN 1239803 A CN1239803 A CN 1239803A CN 98110308 CN98110308 CN 98110308 CN 98110308 A CN98110308 A CN 98110308A CN 1239803 A CN1239803 A CN 1239803A
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- insulator
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- resilient coating
- term strength
- chock
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Abstract
The present invention relates to the field of electric engineering technology. Available internal wedge structure of insulator has its core rod contacting directly with the end cap and the wedge, and in case of some force applied to the insulator, the core rod produces large displacement relative to the end cap and the wedge and centralized stress leading to lower short-term and long-term strength of the insulator. Through painting adhesive buffering layer to the said connecting interface, the present invention avoids the said displacement and reduces centralized stress to raise the short-term and long-term strength of the insulator obviously and to raise the reliability for the power system to run safely.
Description
The invention belongs to the electrical engineering field, electric power system overhead transmission line insulator.
The internally wedged composite long rod insulator early has [1] in the world, and its two ends are by end cap (1), chock (2), plug (3) and be connected cavity (4) and form, and sees accompanying drawing 1.But owing to have serious slippage and stress concentration phenomenon between each parts when stressed, its short-term or long-term strength are lower, even do not reach the world or national standard [2].
The objective of the invention is to guarantee the reliability service of electric power system in order not change the long-term or short term strength of raising insulator under the existing product size condition.
The invention is characterized in that linkage interface need be coated with bonding resilient coating (5) between its chock (2) and connection cavity (4) and plug (3), see accompanying drawing 1.
Bonding resilient coating of the present invention (5) it is characterized in that it by following material be mixed with (mass fraction, %)
Epoxy resin 100
Curing agent 60～100
Bonding resilient coating of the present invention (5) is characterized in that it is that the bonding breaker rubber that mixes according to the above ratio is applied to bonding resilient coating (5) position, place equably, treat behind 1～3min again will chock (2) to insert in the plug (3) and assemble, according to above-mentioned sizing compound formula product is carried out solidifying under 80 ℃～150 ℃ temperature forming after time of about 4h～1h then by current methods.
The present invention can obviously improve the short term strength and the long-term strength of product, sees Table 1, guarantees the safe and reliable operation of electric power system.
Table 1 existing product and product strength of the present invention are relatively
| Short term strength (1min destruction) kN | Long-term strength (applying 0.6 times that x loads) continues 96h | 96h test back residual strength kN | ||||
| ?xi | ??x | ????0.6x(kN) | Continue 96h | ???xi | ???x | |
| Existing product | ?125 ?118 ?129 | ?124 | ????74 | Do not pass through | ??—— | |
| Product of the present invention | ?210 ?212 ?217 | ?213 | ????128 | By | ???198 ???222 ???198 | ??206 |
Annotate 1: existing product is identical with raw material with product structure size of the present invention.
2, x
i---single destruction value, x=∑ x
i/ n, n are the test product number.
The situation radical change of implementing can make more present factory's products not reach standard value (particularly 96h long term test) behind the present invention is come, and improves the power system operation reliability.In addition, as can be seen from Table 1, product of the present invention residual strength after the 96h test still is 206kN, is 97% of short term strength 213kN, reach advanced world standards fully [3].
Accompanying drawing 1 is the compound inslation end construction, is the part that guarantees insulator mechanical strength, 1-end cap, 2-chock, 3-plug, 4-connection cavity, 5-bonding resilient coating.
List of references
[1]K.O.Papailiou?W.Fluri，A.Wermelinger.Erfahrung?mit?Einsatz?vonVerbundisolatoren?Bull.SEV，1990，v.81，no.19，11—18
[2]IEC?IS?1109(1992)
[3]L.Paris，L.Pargamin，D.Dumora，R.Parraud?Ratings?of?composite?sus-pension?insutators?related?to?the?long?term?mechanical?strength?rods.IEEETrans.Power?Delivery.1994，v.9，no.4，2055—2061，Disc.2062—2063。
Claims (3)
1, its two ends of internally wedged composite insulator with high long-term strength are by end cap (1), chock (2), plug (3) be connected cavity (4) and form, and it is characterized in that its chock (2) and connect that linkage interface need be coated with the resilient coating (5) that bonds between cavity (4) and plug (3).
2, by the described bonding resilient coating of claim 1 (5) it is characterized in that it be by following material be mixed with (mass fraction, %):
Epoxy resin 100
Curing agent 60-100
3, it is characterized in that by the described bonding resilient coating of claim 1 (5) it is be applied to bonding resilient coating (5) position, place equably by the good bonding breaker rubber of the described mixed of claim 2, treat to assemble by current methods in chock (2) the insertion plug (3) again behind 1～3min, form after according to above-mentioned sizing compound formula product being carried out solidifying about 4h～1h under 80 ℃～150 ℃ temperature then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98110308 CN1239803A (en) | 1998-06-20 | 1998-06-20 | Internally wedged composite insulator with high long-term strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98110308 CN1239803A (en) | 1998-06-20 | 1998-06-20 | Internally wedged composite insulator with high long-term strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1239803A true CN1239803A (en) | 1999-12-29 |
Family
ID=5220369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98110308 Pending CN1239803A (en) | 1998-06-20 | 1998-06-20 | Internally wedged composite insulator with high long-term strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1239803A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008061446A1 (en) * | 2006-11-24 | 2008-05-29 | Guangzhou Times Rubber & Plastic Enterprise Co., Ltd. | A hang-type composite insulator |
| CN110556713A (en) * | 2018-06-01 | 2019-12-10 | 中国电力科学研究院有限公司 | anti-seismic structure for pillar type electrical equipment |
-
1998
- 1998-06-20 CN CN 98110308 patent/CN1239803A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008061446A1 (en) * | 2006-11-24 | 2008-05-29 | Guangzhou Times Rubber & Plastic Enterprise Co., Ltd. | A hang-type composite insulator |
| EP2117013A1 (en) * | 2006-11-24 | 2009-11-11 | Zhuzhou Times New Material Technology Co., Ltd. | A hang-type composite insulator |
| EP2117013A4 (en) * | 2006-11-24 | 2013-05-01 | Zhuzhou Times New Material Technology Co Ltd | A hang-type composite insulator |
| CN110556713A (en) * | 2018-06-01 | 2019-12-10 | 中国电力科学研究院有限公司 | anti-seismic structure for pillar type electrical equipment |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |