CN1308967C - Lightening column insulator of overhead insulated cable - Google Patents
Lightening column insulator of overhead insulated cable Download PDFInfo
- Publication number
- CN1308967C CN1308967C CNB2004100175144A CN200410017514A CN1308967C CN 1308967 C CN1308967 C CN 1308967C CN B2004100175144 A CNB2004100175144 A CN B2004100175144A CN 200410017514 A CN200410017514 A CN 200410017514A CN 1308967 C CN1308967 C CN 1308967C
- Authority
- CN
- China
- Prior art keywords
- insulator
- insulated
- upper flange
- discharge ring
- cable
- 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
- 239000012212 insulator Substances 0.000 title claims abstract description 32
- 239000004411 aluminium Substances 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 abstract description 15
- 238000010891 electric arc Methods 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 2
- 208000025274 Lightning injury Diseases 0.000 abstract 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 229920000715 Mucilage Polymers 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000002429 anti-coagulating effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Landscapes
- Insulators (AREA)
Abstract
The present invention relates to a lightning protected strut insulator for aerial insulated cables, which comprises an insulator main body, an upper flange, a lower flange, a discharge ring, an end tab, a clipping jointing clamp and an insulating cover, wherein the clipping jointing clamp is assembled on the top of the upper flange through a threaded bolt with a pressure spring to cause an insulated cable to be tightly pressed between the bottom of the clipping jointing clamp and the upper flange, and the top thereof to the discharge ring are covered in the insulating cover. In addition, the insulated cable is partially provided with a bare cable at the strut insulator, both ends of the bare cable are coated by insulating tapes, and the middle is coated by aluminium armor tapes. On one hand, the present invention causes an insulated conductor to be partially provided with a bare conductor near the insulator according to a mechanism of the lightning stroke disconnection of the insulated conductor; on the other hand, the arc root of an industrial frequency electric arc is transferred or fixed between the discharge ring and the end tab through the discharge ring on the upper flange of the lightning protected strut insulator and the end tab fixed to the lower flange to cause the energy of lightning strike short-circuit electric arcs to be transferred from the insulated conductor in split second so as to protect the insulated cable from lightning strike damage, and the safe operation of aerial insulated electric distribution networks can be ensured.
Description
Technical field
The present invention relates to a kind of post insulator that is used for overhead distribution, especially relate to a kind of lightning protection pillar insulator that is used for aerial insulated cable, effectively prevent lightning-caused breaking, guarantee the safe operation of overhead insulating power distribution network.
Background technology
Cause the overhead distribution fault in order to reduce external causes such as trees, birds, accumulated snow, improve power supply reliability.The insulating rate of China's big city 10kV overhead transmission line is quite high, and the insulating of 10kV overhead transmission line has become development trend.
Insulated conductor has solved corridor that plain conductor can't resolve and safety problem, compares with cable, reduced investment, builds soon, and advantage is fairly obvious.But problem such as open type connected mode has not only influenced the rack security of operation and has seriously hindered the popularization of 10kV overhead transmission line insulating work between lightning-caused breaking, cable and overhead wire.
The thunderbolt resistance characteristics of insulated conductor has been compared obviously different with plain conductor.When direct lightning strike or lightning induced voltage acted on plain conductor and cause insulator arc-over, lasting power frequency short circuit current electric arc moved to deviating from the power supply direction along lead under electrodynamic effect, can the serious burn lead.Insulated conductor is then different.As shown in Figure 1, existing insulated conductor 1 ' be installed on the post insulator (model is PS-15), this post insulator comprise insulator body 8 ' and be installed in the lower flange 7 of its underpart '.Lightning overvoltage at first punctures wire insulation and then causes insulator arc-over, breakdown insulating barrier is a pin hole shape, the power frequency short circuit current electric arc that continues is subjected to the anti-coagulating action that insulate on every side, the arc root can only burn at the pin hole place, will be at extremely short time inside conductor by neat blowing, the thunderbolt loss of power accident takes place, thereby the safe operation of power distribution network in serious threat.
Therefore, the problem of insulated conductor lightning-caused breaking must be properly settled, the safety of overhead insulating power distribution network could be guaranteed.
Summary of the invention
The object of the present invention is to provide a kind of for the 10kV suspended insulated guide wire provides the most basic post insulator that prevents lightning-caused breaking, thereby promote and optimize the insulation of 10kV overhead transmission line, improve the reliability and the fail safe of power supply.
A kind of lightning protection pillar insulator that is used for aerial insulated cable provided by the present invention, comprise insulator body and be fixedly connected on the upper and lower flange at these insulator body two ends respectively, be characterized in: it also comprises discharge ring, run-on tab, clamped binding clip and insulating cover, and wherein: described discharge ring is nested on the described upper flange; Described run-on tab is fixed on the bottom of lower flange; The bolts assemblies of described clamped binding clip by stage clip is housed is at the top of upper flange, described insulated cable is pressed between the bottom and upper flange of this clamped binding clip, and by described insulating cover from its main header casing to described discharge ring, again: this insulated cable is a bare wire in the part that is positioned at described post insulator place, and at the two ends of this bare wire coated insulation adhesive tape, the middle aluminium armor tape that coats.
Adopted above-mentioned technical solution; that is: one side is according to the mechanism of insulated conductor lightning-caused breaking; with near the local bare wireization of the insulated conductor the insulator; on the other hand by run-on tab fixing on discharge ring on the lightning protection pillar insulator upper flange and the lower flange; power frequency arc arc root is shifted or be fixed on and discharge between ring and the run-on tab; thunderbolt short circuiting arc energy was shifted from lead in the extremely short time; thereby the protection insulated cable is avoided the thunderbolt injury, guarantees the safe operation of overhead insulating power distribution network.
Description of drawings
Fig. 1 is the structural representation of existing post insulator (model is PS-15);
Fig. 2 is the stereochemical structure exploded view of lightning protection pillar insulator of the present invention.
Embodiment
As shown in Figure 2, the present invention promptly is used for the lightning protection pillar insulator of aerial insulated cable, comprises insulator body 8, upper flange 5, lower flange 7, discharge ring 2, run-on tab 6, clamped binding clip 4 and insulating cover 3.Mucilage binding is in upper flange 5, lower flange 7 respectively at the two ends of insulator body 8, and discharge ring 2 is nested on the upper flange 5.
Clamped binding clip 4 is a kind of universal products, is assemblied in the top of upper flange 5 by the bolt 41 that stage clip is housed.
Run-on tab 6 places lower flange 7 bottoms.
When installing at the scene, with near the local bare wireization of insulated cable 1 insulator body 8, and at bare wire end bag insulating tape, middle wrapping aluminium armor tape, by clamped binding clip 4 insulated cable 1 is pressed between clamped binding clip 4 and the upper flange 5, guarantee that contact is good, put insulating cover 3 at last.
Operation principle of the present invention:
When electrical network normally in service, the exposed live metal of 3 pairs of insulated cables 1 of insulating cover has partly carried out insulating protection, has prevented the infringement of foreign matter to electrical network.When being struck by lightning; because near insulated cable 1 part the insulator of the present invention is by bare wireization; power frequency arc arc root is transferred on the special discharge ring 2 at an easy rate; and at the starting arc between ring 2 and the run-on tab 6 that discharges; thunderbolt short circuiting arc energy was shifted from lead in the extremely short time, thereby guardwire avoids burn.
Claims (1)
1. lightning protection pillar insulator that is used for aerial insulated cable, comprise insulator body (8) and be fixedly connected on the upper and lower flange (5,7) at this insulator body (8) two ends respectively, it is characterized in that: it also comprises discharge ring (2), run-on tab (6), clamped binding clip (4) and insulating cover (3), wherein:
Described discharge ring (2) is nested on the described upper flange (5);
Described run-on tab (6) is fixed on the bottom of lower flange (7);
Described clamped binding clip (4) is assemblied in the top of upper flange (5) by the bolt (41) that stage clip is housed, described insulated cable (1) is pressed between the bottom and upper flange (5) of this clamped binding clip (4), and by described insulating cover (3) from its main header casing to described discharge ring (2), again:
This insulated cable (1) is a bare wire in the part that is positioned at described post insulator place, and at the two ends of this bare wire coated insulation adhesive tape, the middle aluminium armor tape that coats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100175144A CN1308967C (en) | 2004-04-07 | 2004-04-07 | Lightening column insulator of overhead insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100175144A CN1308967C (en) | 2004-04-07 | 2004-04-07 | Lightening column insulator of overhead insulated cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1681051A CN1681051A (en) | 2005-10-12 |
| CN1308967C true CN1308967C (en) | 2007-04-04 |
Family
ID=35067589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100175144A Expired - Lifetime CN1308967C (en) | 2004-04-07 | 2004-04-07 | Lightening column insulator of overhead insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1308967C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325104B (en) * | 2007-06-15 | 2010-09-08 | 上海兆邦电力器材有限公司 | Lightning protection post insulator |
| CN105811349A (en) * | 2016-03-12 | 2016-07-27 | 国网山东省电力公司栖霞市供电公司 | Power transmission device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2692807Y (en) * | 2004-04-07 | 2005-04-13 | 陈伟明 | Thunder prevention pole isolator for overhead isolated cable |
-
2004
- 2004-04-07 CN CNB2004100175144A patent/CN1308967C/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2692807Y (en) * | 2004-04-07 | 2005-04-13 | 陈伟明 | Thunder prevention pole isolator for overhead isolated cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1681051A (en) | 2005-10-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ELECTRIC PORCELAIN PLANT; APPLICANT Free format text: FORMER OWNER: CHEN WEIMING; APPLICANT Effective date: 20060630 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20060630 Address after: 200241 No. 4299, Lane 1, Wu Wu Road, Shanghai Applicant after: Shanghai Electric Porcelain Factory Co-applicant after: SHANGHAI MUNICIPAL ELECTRIC POWER Co. Address before: 200233 room 1, No. 567, Lane 202, Xuhui District, Shanghai, Guilin Road Applicant before: Chen Weiming Co-applicant before: Zhu Ming |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200241 No. 4299, Lane 1, Wu Wu Road, Shanghai Patentee after: SHANGHAI ELECTRIC PORCELAIN WORKS Co.,Ltd. Patentee after: SHANGHAI MUNICIPAL ELECTRIC POWER Co. Address before: 200241 No. 4299, Lane 1, Wu Wu Road, Shanghai Patentee before: Shanghai Electric Porcelain Factory Patentee before: SHANGHAI MUNICIPAL ELECTRIC POWER Co. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070404 |