KR101644194B1 - Triple tension insulator string assembly having lightning protector - Google Patents

Triple tension insulator string assembly having lightning protector Download PDF

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Publication number
KR101644194B1
KR101644194B1 KR1020100090469A KR20100090469A KR101644194B1 KR 101644194 B1 KR101644194 B1 KR 101644194B1 KR 1020100090469 A KR1020100090469 A KR 1020100090469A KR 20100090469 A KR20100090469 A KR 20100090469A KR 101644194 B1 KR101644194 B1 KR 101644194B1
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KR
South Korea
Prior art keywords
lightning arrester
insulator
link
built
yokes
Prior art date
Application number
KR1020100090469A
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Korean (ko)
Other versions
KR20110031113A (en
Inventor
스스무 스즈키
마사유키 마츠야마
Original Assignee
엔지케이 인슐레이터 엘티디
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables
    • H02G7/05—Suspension arrangements or devices for electric cables or lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/10—Overvoltage arresters using spark gaps having a single gap or a plurality of gaps in parallel
    • H01T4/14—Arcing horns
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/24—Installation of lines or cables on walls, ceilings or floors by means of insulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/02—Suspension insulators; Strain insulators
    • H01B17/04—Chains; Multiple chains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/02—Suspension insulators; Strain insulators
    • H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Insulators (AREA)
  • Power Engineering (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

An object of the present invention is to provide a three-series built-in insulator with a lightning arrester which can reduce the weight of the balance weight and does not cause the collapse of the weight balance, and does not impair the function of the three-
The three yokes 12 are formed by connecting the two yokes 2 having the link attachment holes 4 at both ends thereof coaxially with the link attachment holes 4 at the center, ) Is attached to the main body through a link (5) to constitute a three-series built-in insulator assembly. The lightning arrester 10 is held in the vicinity of the upper central axis of the three-legged built-in insulator by the horn mounting bracket 20 which overhangs from the one double yoke 2 in the direction of the central link attachment hole 4 The small balance weight 40 is attached to the other double yoke 2 or the link 5 on the other side so as to balance the weight of the horn attachment bracket 20. [

Description

TRIPLE TENSION INSULATOR STRING ASSEMBLY HAVING LIGHTING PROTECTOR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a triaxial insulator assembly with a lightning arrester used mainly in a transmission line.

In order to insulate and support a transmission line to a steel tower, various insulator assemblies have been used. When a tensile load imposed on an insulator is large, a double insulator built-in insulator or a three- . In addition, in order to prevent a lightning accident in the transmission line due to flashover of the insulator when the lightning occurs in the transmission line, it is widely practiced to attach a lightning arrester to the insulator.

This lightning arrester has a zinc oxide element having a nonlinear voltage-current characteristic which is high in resistance to the operating voltage of the system but low in resistance to lightning surge overvoltage in series inside the vessel, Covered with a sheath, and a discharge electrode attached to the tip. The current does not flow normally but the voltage generated in the insulator is suppressed by using the voltage-current characteristic of the zinc oxide element at the time of lightning stroke, and the continuous flow is also blocked in a short time, . This lightning protection device is, for example, a large-sized device having a length of 1 m or more and a weight of several tens kilograms for a transmission line of 275 kV.

On the other hand, in order to equally apply a tensile load to each of two or three series of insulators, the two-series built-in insulator and the three-series built-in insulator are formed by a flat plate-like metal member called a yoke . Fig. 1 is a plan view of a double-walled built-in insulator, in which two insulators 1 are supported in parallel by a double yoke 2 on the ground side and a double yoke 3 on the over-current side. Each yoke has a link attachment hole (4) at both ends thereof, and the receptacle (1) is attached to the link attachment hole (4) through a link (5). A separate metal fitting hole 6 is formed in the center of the double yoke 2 and is connected to the iron tower arm 7.

In the case of the three-series built-in insulator assembly shown in Fig. 2, by connecting the two double yokes 2 having the link attachment holes 4 at both ends thereof coaxially with the center link attachment holes 4, And the yoke 1 is attached to each of the link attachment holes 4 through the link 5. During the vibration of the electric wire or the movement of the electric motor, the two double yokes 2 are moved so that an equal tension load acts on the three lines of the rotor 1.

When the lightning arrester 10 is attached to the above-described double-layer built-in insulator, the lightning insulator 10 is attached to the center of the double yoke 2 in consideration of the weight balance. Further, in the case of attaching the lightning arrester 10 to the three-port built-in insulator, it is also possible to mount the lightning arrester on the center axis of the three- A method of attaching is considered. However, according to such consideration, when the lightning arrester is attached, the lightning arrester must be fixed by the lightning arrester attachment bracket (horn attachment bracket) which is spread over the two double yokes as shown in Fig. In this case, the motion of the two double yokes 2 is disturbed by the base portion of the lightning device attachment fitting (horn attachment bracket) indicated by hatching, and the movement of the two double yoke 2 (Twisting) of the twin yoke 2 and the twin yokes 2 of the two twin yokes 2 are subjected to an excessive load applied to the twin yokes 2, All.

In order to solve the above problem, as shown in FIG. 2, the lightning arrester 10 is attached to the center of one of the two yokes 2, and the balance weight 11 ) May be attached to the surface of the substrate. In the example of the 275 kV lightning arrester, as described above, since the lightning arrester 10 is a considerably heavy object having a weight of several tens kilograms, the balance weight 11 becomes heavy as the same and the equipment cost becomes high. There is a problem that the attaching work is not easy. If the balance weight 11 is omitted, a special load due to the twist is applied to the link and the other connecting metal, which undesirably deteriorates strength and durability.

[Patent Document 1] Japanese Patent Application Laid-open No. Hei 9-233661

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problems of the prior art, and to provide a lightning device capable of reducing the weight of the balance weight even though the lightning arrester is heavy, And it is an object of the present invention to provide a three-series built-in insulator with lightning arrester.

SUMMARY OF THE INVENTION In order to solve the above-described problems, the present invention provides a three-legged built-in insulator with a lightning arrester, wherein two pairs of yokes each having a link attachment hole at both ends thereof are connected coaxially with the center link attachment holes, , And a three-series built-in insulator unit in which an insulator is attached to each link attachment hole through a link, and a three-series built-in insulator by an overhanging horn in the direction of the center link attachment hole from one of the two series yokes A lightning arrester held near an upper central axis of the insulator device and a small balance weight attached to the other two yoke yokes or links on the outside thereof to balance the weight of the horn mounting brackets will be.

In addition, there is a structure in which an arc horn for forming a discharge gap is attached between the links at both outer ends of the three series yokes located on the opposite side of the lightning arrester to the front electrode of the lightning arrester, So that a discharge gap is formed between the lightning arresters on both sides.

The three-armed built-in insulator with the lightning arrester of the present invention is characterized in that a lightning arrester is provided near the top of the central axis of the three-armed built-in insulator by means of a horn mounting bracket that overhangs in the direction of the center link attachment hole from one of the two- And the small balance weight for balancing the weight of the horn-attachment bracket. Therefore, the balance of the whole insulator is not broken even though the lightning arrester is a heavy article of several tens of kg. Because of this, the balance weight can be made lighter, and the weight balance does not collapse, so that no special load due to the twist is applied to the connecting bracket.

1 is a plan view of a double-walled built-in insulator with a lightning arrester.
2 is a plan view of a conventional three-layer built-in insulator with a lightning arrester.
Fig. 3 is an explanatory diagram of a state in which a lightning arming device attachment bracket is attached over two double yokes; Fig.
4 is a plan view of a three-series built-in insulator with a lightning arrester of the present invention.
5 is a front view of a three-series built-in insulator equipped with lightning arrester of the present invention.
6 is an enlarged plan view of the horn attachment bracket.

Hereinafter, embodiments of the present invention will be described.

Fig. 4 and Fig. 5 show an embodiment of the present invention. The two double yoke 2 having the link attachment holes 4 at both ends thereof are bent so as to be coaxial with the center link attachment hole 4 So that the three series yokes 12 are formed. In this embodiment, the triangular yoke 12 has the same structure as the ground side and the over-current side, and the magnetron 1 is attached to each link attachment hole 4 through the link 5. A metal fitting hole 6 is formed at the center of each of the two yokes 2 on the ground side and is connected to the iron tower arm 15 through another link 13 and a metal fitting 14. Similarly, a hole 6 for attaching a metal is formed in the central portion of the double yoke 2 on the over-current side, and the power transmission line 18 is connected through the other link 16 and the metal fitting 17.

In this embodiment, the lightning arrester 10 is fixed to the three-spoke yoke 12 on the ground side by the horn-fixture 20. The lightning arrester 10 itself is constituted by arranging zinc oxide elements in series, covering the outside thereof with an outer covering, and attaching an electrode to the front end thereof. 6, the base 21 is fixed to one of the two yokes 2 by a bolt, and the horn-attachment plate 22 at the tip of the base 21 is fixed to the center link- In the direction of the overhang. With this structure, in order to keep the lightning arrester 10, which is a heavy item, close to the upper central axis of the three-series built-in insulator and to prevent the movement of the two yokes 2 of the three- As shown in Fig. Here, the vicinity of the upper center axis of the three-series built-in insulator means that the deviation of the diameter of the lightning arrester 10 from the central axis of the three-

However, even if the lightning arrester 10 is held near the upper center axis of the three-series built-in insulator as described above, the weight of one of the two yokes 2 becomes heavy by the weight of the horn- Therefore, in the present invention, the small balance weight 30 is attached to the yoke 2 on the opposite side or the link 5 on the outside thereof to eliminate the unbalance in weight. The small balance weight 30 is, for example, a galvanized steel product. Its weight is only about 10 kg, and it is much lighter than the conventional balance weight 11 shown in Fig. 2 was several tens kilograms. Therefore, the production cost is low, and the work of attaching on the steel tower becomes easy. As described above, by attaching the lightning arrester 10 in such a manner as to protrude slightly to the opposite side from the center axis of the three-series built-in insulator, the weight of the compact balance weight 11 can be reduced.

A discharge gap G is formed between the outer end links 5 and 5 of the three yokes 12 located on the opposite side of the lightning arrester 10 to the tip electrodes of the lightning arrester 10 An arc horn 40 is attached. However, the method of attaching the arc horn 40 is not particularly limited, and various modifications can be made to the shape of the arc horn 40. It is also possible to attach a lightning arrester in place of the arc horn 40. [

In the three-series built-in insulator with the lightning arrester of the present invention thus constituted, three insulators 1 are supported by three consecutive yokes 12 so that each insulator 1 uniformly distributes a tensile load And the brain surge current flows to the lightning arrester 10 through the discharge gap G during the lightning stroke so as to avoid the breakage of the insulator apparatus or the flashover between the arc horns. . However, as described above, the three-legged built-in insulator with lightning arrester of the present invention ensures the overall weight balance by the compact balance weight 30, which is much lighter than the conventional one, The occurrence of a load can be avoided. Therefore, the manufacturing cost is lower than that of the prior art, and the mounting operation on the steel tower can be facilitated.

In the embodiment described above, the lightning arrester 10 is attached to the ground side of the igniter 1, but it can also be attached to the over-current side. It is also possible to attach the lightning protection device 10 to both the ground side and the overcharge side.

1:
2: Double yoke
3: Double yoke
4: Link attachment hole
5: Link
6: Mounting hole of bracket
7: Steel tower arm
10: lightning arrester
11: Balance weight
12: 3 York
13: Link
14: bracket
15: Steel tower arm
16: Link
17: Bracket
18: Transmission line
20: Horn mounting bracket
21: donation
22: Horn attachment plate
30: Small balance weight
40: arc horn

Claims (2)

A three-row yoke is constituted by connecting two double yokes having link attachment holes at both ends with the center link attachment holes being coaxial, and a three-line internal insulator assembly A lightning arrester held in the vicinity of an upper central axis of the three-series built-in insulator by a horn mounting bracket that overhangs in the direction of the center link attachment hole from one of the two series yokes, And a small balance weight attached to a link on the other side or a link on the other side for holding the three-leg type built-in insulator. An arc horn or lightning arrester for forming a discharge gap between the light-shielding device and the front-end electrode of the lightning arrester is provided between the links at both outer ends of the three series yokes located on the opposite side of the lightning arrester With built-in lightning arrester.
KR1020100090469A 2009-09-18 2010-09-15 Triple tension insulator string assembly having lightning protector KR101644194B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPJP-P-2009-216922 2009-09-18
JP2009216922A JP4878058B2 (en) 2009-09-18 2009-09-18 Triple tension insulator with lightning arrester

Publications (2)

Publication Number Publication Date
KR20110031113A KR20110031113A (en) 2011-03-24
KR101644194B1 true KR101644194B1 (en) 2016-07-29

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JP (1) JP4878058B2 (en)
KR (1) KR101644194B1 (en)
GB (1) GB2473697B (en)
HK (1) HK1151129A1 (en)
TW (1) TWI460950B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102280226A (en) * 2011-07-15 2011-12-14 山东电力集团公司烟台供电公司 Composite insulator suspension string in overhead transmission line
CN102280227A (en) * 2011-07-15 2011-12-14 山东电力集团公司烟台供电公司 Composite insulator tension string of overhead transmission line
JP5830482B2 (en) * 2013-03-21 2015-12-09 日本碍子株式会社 Lightning arrester mounting structure in tension insulator
CN104252926A (en) * 2014-10-13 2014-12-31 国家电网公司 Combined type strain insulator string of overhead transmission line
CN104252925A (en) * 2014-10-13 2014-12-31 国家电网公司 Combined insulator suspension string of overhead power transmission line
CN109300632A (en) * 2018-10-31 2019-02-01 中国南方电网有限责任公司超高压输电公司检修试验中心 A kind of linking insulator structure with lightning arrester
CN109961618B (en) * 2019-03-22 2020-09-01 国网湖南省电力有限公司 Composite insulator V-shaped arrangement anti-string-falling treatment and warning method

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JPH0621134Y2 (en) * 1990-06-18 1994-06-01 関西電力株式会社 Large bundle diameter multiconductor transmission line insulator
JPH04267011A (en) * 1991-02-22 1992-09-22 Ngk Insulators Ltd Lighting insulator device for power transmission line
JPH06162853A (en) * 1992-11-20 1994-06-10 Ngk Insulators Ltd Jumper wire supporting insulator device
JP2969504B2 (en) * 1996-02-26 1999-11-02 関西電力株式会社 3-point supporting double tension device
JP2002093256A (en) * 2000-09-18 2002-03-29 Ngk Insulators Ltd Lightning protection insulator set
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JP2004303624A (en) * 2003-03-31 2004-10-28 Furukawa Electric Co Ltd:The Method of adjusting gap between arcing horns
JP4731171B2 (en) * 2005-01-17 2011-07-20 中国電力株式会社 A series of suspended insulator devices and their grounded metal fittings
JP5058493B2 (en) * 2006-02-13 2012-10-24 旭テックＴｄｍ株式会社 Tensile insulator

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Publication number Publication date
GB2473697A (en) 2011-03-23
GB2473697B (en) 2013-12-04
TW201112556A (en) 2011-04-01
JP2011065928A (en) 2011-03-31
KR20110031113A (en) 2011-03-24
TWI460950B (en) 2014-11-11
GB201013149D0 (en) 2010-09-22
JP4878058B2 (en) 2012-02-15
HK1151129A1 (en) 2012-01-20

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