CN203631985U - Parallel-gap adjusting lightning-protection device in shape of umbrella frame for insulator - Google Patents

Parallel-gap adjusting lightning-protection device in shape of umbrella frame for insulator Download PDF

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Publication number
CN203631985U
CN203631985U CN201320781187.4U CN201320781187U CN203631985U CN 203631985 U CN203631985 U CN 203631985U CN 201320781187 U CN201320781187 U CN 201320781187U CN 203631985 U CN203631985 U CN 203631985U
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CN
China
Prior art keywords
insulator
wire
electrode
pawl
protection device
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 - Fee Related
Application number
CN201320781187.4U
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Chinese (zh)
Inventor
王鑫
焦亘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Anyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Anyang Power Supply Co of State Grid Henan Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Anyang Power Supply Co of State Grid Henan Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201320781187.4U priority Critical patent/CN203631985U/en
Application granted granted Critical
Publication of CN203631985U publication Critical patent/CN203631985U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a parallel-gap adjusting lightning-protection device in the shape of an umbrella frame for an insulator, and the device comprises the insulator. Two ends of the insulator are fixedly connected with a ground-side electrode and a wire-side electrode. The ground-side electrode and the wire-side electrode are respectively a claw with at least three claw fingers. Claw fingers at two sides of the insulator are equal in number and are correspondingly arranged. The device provided by the utility model is simple in structure, and is convenient to install. The claw fingers of the wire-side electrode or the claw fingers of the ground-side electrode are connected movably. The claw fingers make plane movement along the axis of the insulator, so as to adjust the distance between the ground-side electrode and the wire-side electrode. The device is suitable for insulators in different lengths.

Description

Umbrella frame shape regulates the insulator lightning protection device of parallel connection gaps
Technical field
The utility model relates to a kind of lightning protection device for power overhead network, is specifically related to the insulator lightning protection device of umbrella frame shape adjusting parallel connection gaps.
Background technology
Aerial power transmission line lightning protection is that work about electric power person makes great efforts the problem of inquiring into always.In recent years, the fault being caused by thunder and lightning in electrical network still accounts for significant proportion, comprises that the power frequency continued flow after lightning stroke flashover damages insulator and gold utensil thereof, causes line accident.Lightning fault remains one of key factor affecting power grid security.
The existing lightning protection measures of aerial power transmission line, as set up into thunder line, reduction pole tower ground resistance, reinforced insulation etc., its core concept is to improve as much as possible the lightning withstand level of circuit, reduces tripping rate with lightning strike.These lightning protection measuress can be summarized as " blocking type " lightning protection mode.For the early stage Net Frame of Electric Network weakness of China, the poor actual conditions of (oil) switch performance, lightning protection aforesaid way is suitable.In recent years, China's electrical network fast development, grid structure is more and more stronger; Along with technological progress, transformer station is used SF6 switch in a large number, relaying protection Microcomputer; reclosing device obtains general screening and uses; provide favourable condition for developing new lightning protection mode, if now still only continue to use original lightning protection mode, seemed conservative and unilateral.In addition, installation line type enters the mode of thunder device, and cost is very high, can not generally adopt.
Application number is 200420001291.8 patent overhead circuit parallel gap lightning protection device, and the parallel gap lightning protection device disclosing is simple in structure, easy for installation, and electrode material and diameter can tolerate repeatedly calcination of high current arc.But due to ground connection side and side of wire was electrode non-adjustable, so the insulator differing for length, because the space between two electrodes is larger, can not play a protective role.
Utility model content
Gap for parallel gap lightning protection device in prior art is non-adjustable, can not regulate the problem of two interelectrode distances.The utility model provides a kind of umbrella frame shape simple in structure to regulate the insulator lightning protection device of parallel connection gaps.
To achieve these goals, the technical solution adopted in the utility model is: umbrella frame shape regulates the insulator lightning protection device of parallel connection gaps, comprise insulator, two ends dead earth lateral electrode and the side of wire was electrode of insulator, described ground connection lateral electrode and side of wire was electrode are the pawl that at least three pawls refer to, the identical and corresponding setting of the pawl index of insulator both sides.
One of 3,5,7 of described pawl exponent bits.
The described pawl of leading lateral electrode refers to that pawl refers to along the planar movement at insulator axis place, to adjust the distance between ground connection lateral electrode and side of wire was electrode in order to be flexibly connected.
Described flexible connection, pawl refers to that between the jack shaft of side of wire was gold utensil, for umbrella rib type is connected, pawl refers to that, for umbrella cover support rib, gold utensil jack shaft is umbrella bar.
Beneficial effect is: the core of " parallel connection gaps lightning protection " mode is to allow circuit to have certain tripping rate with lightning strike, but reclosing can be successful, without permanent fault. in parallel with insulator by the gap that adopts ground connection lateral electrode, side of wire was electrode to form, connect and dodge thunder and lightning and dredge power frequency arc.Parallel connection gaps and the ground connection side of insulator string and connecting of line side that ground connection lateral electrode, side of wire was electrode form, make them have respectively identical current potential, and in the time that overhead transmission line is struck by lightning, first protection gap will discharge.
Adjustable parallel gap lightning protection device of the present utility model is simple in structure, easy for installation; the pawl of side of wire was electrode or ground connection lateral electrode refers to for being flexibly connected; pawl refers to along the planar movement at insulator axis place; to adjust the distance between earth connection lateral electrode and side of wire was electrode, all can use for the insulator of different length.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, umbrella frame shape regulates the insulator lightning protection device of parallel connection gaps, comprises insulator 1, two ends dead earth lateral electrode 3 and the side of wire was electrode 2 of insulator, described ground connection lateral electrode 3 and side of wire was electrode 2 refer to at least three pawls, the identical and corresponding setting of the pawl index of insulator both sides.One of 3,5,7 of described pawl exponent bits.The pawl of described side of wire was electrode 2 refers to that pawl refers to along the planar movement at insulator axis place, to adjust the distance between ground connection lateral electrode 3 and side of wire was electrode 2 in order to be flexibly connected.Described flexible connection, pawl refers to that between the jack shaft of side of wire was gold utensil, for umbrella rib type is connected, pawl refers to that, for umbrella cover support rib, gold utensil jack shaft is umbrella bar.
This lightning protection device is installed on behind the two ends of insulator, refers to the height of adjustable side of wire was electrode by umbrella frame shape pawl, reaches suitable protection gap, and in the time that overhead transmission line is struck by lightning, first protection gap will discharge.

Claims (4)

1. umbrella frame shape regulates the insulator lightning protection device of parallel connection gaps, comprise insulator (1), the two ends dead earth lateral electrodes (3) of insulator and side of wire was electrode (2), it is characterized in that: described ground connection lateral electrode (3) and side of wire was electrode (2) refer to at least three pawls the identical and corresponding setting of the pawl index of insulator both sides.
2. want umbrella frame shape described in 1 to regulate the insulator lightning protection device of parallel connection gaps according to right, it is characterized in that: one of 3,5,7 of described pawl exponent bits.
3. want the insulator lightning protection device of the umbrella frame shape adjusting parallel connection gaps described in 2 according to right, it is characterized in that: the pawl of described side of wire was electrode (2) refers to for being flexibly connected, pawl refers to along the planar movement at insulator axis place, to adjust the distance between ground connection lateral electrode (3) and side of wire was electrode (2).
4. want umbrella frame shape described in 3 to regulate the insulator lightning protection device of parallel connection gaps according to right, it is characterized in that: described flexible connection, pawl refers to that between the jack shaft of side of wire was gold utensil, for umbrella rib type is connected, pawl refers to that, for umbrella cover support rib, gold utensil jack shaft is umbrella bar.
CN201320781187.4U 2013-12-03 2013-12-03 Parallel-gap adjusting lightning-protection device in shape of umbrella frame for insulator Expired - Fee Related CN203631985U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320781187.4U CN203631985U (en) 2013-12-03 2013-12-03 Parallel-gap adjusting lightning-protection device in shape of umbrella frame for insulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320781187.4U CN203631985U (en) 2013-12-03 2013-12-03 Parallel-gap adjusting lightning-protection device in shape of umbrella frame for insulator

Publications (1)

Publication Number Publication Date
CN203631985U true CN203631985U (en) 2014-06-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320781187.4U Expired - Fee Related CN203631985U (en) 2013-12-03 2013-12-03 Parallel-gap adjusting lightning-protection device in shape of umbrella frame for insulator

Country Status (1)

Country Link
CN (1) CN203631985U (en)

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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: 20140604

Termination date: 20141203

EXPY Termination of patent right or utility model