CN204216538U - 10kV insulated overhead line - Google Patents
10kV insulated overhead line Download PDFInfo
- Publication number
- CN204216538U CN204216538U CN201420741387.1U CN201420741387U CN204216538U CN 204216538 U CN204216538 U CN 204216538U CN 201420741387 U CN201420741387 U CN 201420741387U CN 204216538 U CN204216538 U CN 204216538U
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- China
- Prior art keywords
- overhead line
- insulated
- gold utensil
- insulated overhead
- insulator
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Abstract
The utility model provides a kind of 10kV insulated overhead line, it is characterized in that: described 10kV insulated overhead line comprises electric discharge gold utensil, insulating shield, insulated conductor, starting rod, composite insulator and lightning arrester, described insulated conductor peripheral hardware has described electric discharge gold utensil, described insulated conductor is closely electrically connected with described insulator top gold utensil, described insulator bottom is provided with described starting rod, and described insulator side adds described lightning arrester.10kV insulated overhead line of the present utility model installs electric discharge gold utensil and lightning arrester additional, effectively can cut off the power frequency continued flow that lightning current causes, effectively can prevent 10kV insulated overhead line lightning-caused breaking.
Description
[technical field]
The utility model relates to field of cables, is specifically related to a kind of 10kV insulated overhead line.
[background technology]
In recent years along with the startup of distribution network transform, 10kV distribution progressively adopts insulated conductor, namely makes the wire laid for outdoor aerial of outsourcing insulation with weather resistant insulating material.Compared with plain conductor, insulated conductor not only has superior insulation property, effectively can prevent the phase fault because foreign body causes, be conducive to reducing the number of times joint used circuit and have a power failure because of operation, reduce the time had a power failure because of maintenance, the reliability that raising line security is powered and quality of voltage, can also simplify tower structure simultaneously, solve tree line contradiction.Although insulated conductor has more advantages.
But since using insulated conductor, lightning-caused breaking accident often occurs, threaten personal safety, caused huge property economic loss.
In order to solve the problem, mainly take the artificial method of insulation weak spot of specifying to the flashover that prevents an accident at present.Find still there is insulation defect according to current method in practice, effectively can not prevent 10kV insulated overhead line lightning-caused breaking.
[utility model content]
In view of this, for overcoming the deficiencies in the prior art, the utility model provide a kind of can effectively Lightning proof broken string 10kV insulated overhead line.
A kind of 10kV insulated overhead line, it is characterized in that: described 10kV insulated overhead line comprises electric discharge gold utensil, insulating shield, insulated conductor, starting rod, composite insulator and lightning arrester, described insulated conductor peripheral hardware has described electric discharge gold utensil, described insulated conductor is closely electrically connected with described insulator top gold utensil, described insulator bottom is provided with described starting rod, and described insulator side adds described lightning arrester.
On the basis of technique scheme, leave gap and make discharge channel between described insulating shield and described electric discharge gold utensil, the described insulation of stripping is led between exposed part and insulating barrier and is added waterproof insulation tape, and described insulating shield two ends adhesive waterproof tape is fixed.
On the basis of technique scheme, described lightning arrester is the zinc oxide arrester of direct connection zinc oxide arrester or band gap.
On the basis of technique scheme, described 10kV insulated overhead line comprises goat's horn single armed further, and the lower end of the lightning arrester of described band gap and the lower end of described insulator are equipped with described goat's horn single armed, forms discharging gap D between two described goat's horn single armeds.
On the basis of technique scheme, described discharging gap D is 100 ± 5 millimeters.
10kV insulated overhead line of the present utility model installs electric discharge gold utensil and lightning arrester additional, effectively can cut off the power frequency continued flow that lightning current causes, effectively can prevent 10kV insulated overhead line lightning-caused breaking.
[accompanying drawing explanation]
Fig. 1, Fig. 2 are respectively the structural representation of two different directions of the 10kV insulated overhead line of preferred embodiment of the present utility model.
Fig. 3 is the lightning arrester scheme of installation of the 10kV insulated overhead line in Fig. 1.
[embodiment]
In order to understand the utility model better, below with reference to accompanying drawing and instantiation, the utility model is described in detail.
For the thunderbolt potential safety hazard that existing 10kV insulated overhead line exists, the utility model provides a kind of 10kV insulated overhead line, effectively can take shelter from the thunder to 10kV insulated overhead line.For open space, in 10kV overhead transmission line, with tower erection overhead ground wire, prevention distribution insulated overhead line induction overvoltage, is mainly used in direct striking thunder prevention and strikes off line.
Refer to Fig. 1 to Fig. 3, in order to reach the object effectively preventing from being struck by lightning, the 10kV insulated overhead line that the utility model preferred embodiment provides comprises electric discharge gold utensil insulating shield 1, insulated conductor 2, starting rod 3, insulating sleeve 4, nut 5, briquetting seat 6, composite insulator 7, cross-arm 8, lightning arrester 9 and goat's horn single armed 10.
Be provided with electric discharge gold utensil (sign) outside insulated conductor 2, electric discharge gold utensil is used for lightning flash over path and fixing power frequency arc burns a little, and electric discharge gold utensil adds insulating shield 1, leaves gap and make discharge channel between insulating shield 1 and electric discharge gold utensil.Add waterproof insulation tape between wire 2 exposed part peeled off and insulating barrier to rise and seal and waterproof action, insulating shield 1 two ends adhesive waterproof tape is fixed.
Insulating sleeve 4 is enclosed within outside insulated conductor 2, to strengthen the insulation property of wire.Nut 5 and briquetting seat 6 are positioned at the top of insulated conductor 2, and during installation, fastening nut 5 drives briquetting seat 6 to compress insulated conductor 2.Cross-arm 8 is installed composite insulator 7, thus supports insulative circuit.
In insulator 7 bearing by insulation displacement, insulated conductor 2 is closely electrically connected with insulator 7 top gold utensil, and starting rod 3 is arranged at insulator 7 bottom.
When after lightning overvoltage flashover, power frequency short circuit current burns between insulator 7 top electric discharge gold utensil and lower end starting rod 3, and electric discharge gold utensil protects wire 2 from damage.
Lightning arrester 9 is added in insulator 7 side.The lower end of lightning arrester 9 and the lower end of insulator 7 are equipped with between goat's horn single armed 10, two goat's horn single armed 10 and form discharging gap D.Lightning arrester 9 can be the zinc oxide arrester of direct connection zinc oxide arrester or band gap.
Zinc oxide arrester 9 has good nonlinear resistance property and blocks the characteristic of power frequency continued flow fast, it is added in circuit, and be conducive to limiting lightning overvoltage, anti-lightning strike effect is better, installs direct connection zinc oxide arrester additional and must break insulating barrier.
The zinc oxide arrester 9 of band gap mainly utilizes external series gap, form the external discharging gap D of zinc oxide current limiting element, if circuit is because of lightning overvoltage, lightning current discharges through the external discharging gap D of zinc oxide current limiting element, power frequency continued flow then oxidized zinc current limiting element blocks, and effectively avoids the generation of insulated overhead line lightning-caused breaking fault.The zinc oxide arrester 9 of band gap is connected with wire 2 by air gap, when lightning current effect, bears the effect of power-frequency voltage.Because be subject to the buffer action of stainless steel draining ring series gap, even if deterioration appears in current limiting element resistor disc, be also unlikely to the normal operation affecting circuit, there is the advantages such as reliability is high, service life is long.For ensureing that normal operating voltage and operating voltage insulated conductor flashover do not occur, during thunderbolt, series gap reliably punctures, and series spark gap D distance elects 100 ± 5 millimeters as, and pole tower ground resistance should be less than 10 ohm.
The 10kV insulated overhead line that the utility model proposes; adopt the zinc oxide arrester two kinds of modes installing direct connection zinc oxide arrester additional and install band gap additional all to achieve and well protect operational effect; effectively can cut off the power frequency continued flow that lightning current causes, effectively can prevent 10kV insulated overhead line lightning-caused breaking.
The above exemplifying embodiment only have expressed some embodiments of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (5)
1. a 10kV insulated overhead line, it is characterized in that: described 10kV insulated overhead line comprises electric discharge gold utensil, insulating shield, insulated conductor, starting rod, composite insulator and lightning arrester, described insulated conductor peripheral hardware has described electric discharge gold utensil, described insulated conductor is closely electrically connected with described insulator top gold utensil, described insulator bottom is provided with described starting rod, and described insulator side adds described lightning arrester.
2. 10kV insulated overhead line according to claim 1, it is characterized in that: leave gap between described insulating shield and described electric discharge gold utensil and make discharge channel, the described insulation of peeling off is led between exposed part and insulating barrier and is added waterproof insulation tape, and described insulating shield two ends adhesive waterproof tape is fixed.
3. 10kV insulated overhead line according to claim 1, is characterized in that: described lightning arrester is the zinc oxide arrester of direct connection zinc oxide arrester or band gap.
4. 10kV insulated overhead line according to claim 3, it is characterized in that: described 10kV insulated overhead line comprises goat's horn single armed further, the lower end of the lightning arrester of described band gap and the lower end of described insulator are equipped with described goat's horn single armed, form discharging gap (D) between two described goat's horn single armeds.
5. 10kV insulated overhead line according to claim 4, is characterized in that: described discharging gap (D) is 100 ± 5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741387.1U CN204216538U (en) | 2014-12-01 | 2014-12-01 | 10kV insulated overhead line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741387.1U CN204216538U (en) | 2014-12-01 | 2014-12-01 | 10kV insulated overhead line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216538U true CN204216538U (en) | 2015-03-18 |
Family
ID=52985175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420741387.1U Expired - Fee Related CN204216538U (en) | 2014-12-01 | 2014-12-01 | 10kV insulated overhead line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105023668A (en) * | 2015-06-29 | 2015-11-04 | 蔡桂钧 | Zinc oxide arrester for power plant |
-
2014
- 2014-12-01 CN CN201420741387.1U patent/CN204216538U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105023668A (en) * | 2015-06-29 | 2015-11-04 | 蔡桂钧 | Zinc oxide arrester for power plant |
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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: 20150318 Termination date: 20151201 |
|
| EXPY | Termination of patent right or utility model |