CN203631987U - Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap - Google Patents

Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap Download PDF

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Publication number
CN203631987U
CN203631987U CN201320781444.4U CN201320781444U CN203631987U CN 203631987 U CN203631987 U CN 203631987U CN 201320781444 U CN201320781444 U CN 201320781444U CN 203631987 U CN203631987 U CN 203631987U
Authority
CN
China
Prior art keywords
insulator
electrode
wire
pawl
rotating shaft
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
CN201320781444.4U
Other languages
Chinese (zh)
Inventor
郝文杰
张伟
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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 CN201320781444.4U priority Critical patent/CN203631987U/en
Application granted granted Critical
Publication of CN203631987U publication Critical patent/CN203631987U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a lightning-protection device for an insulator through employing a rotating shaft for the double-adjustment of a parallel gap, and the device comprises the insulator. Two ends of the insulator are respectively in fixed connection with a ground-side electrode and a wire-side electrode, which are respectively a claw with at least three fingers. The 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 fingers of the ground-side electrode or the wire-side electrode are connected movably, and move along the plane where the axis of the insulator is located, so as to adjust the distance between the ground-side electrode and the wire-side electrode. The device can be used for insulators in different lengths.

Description

The two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft
Technical field
The utility model relates to a kind of lightning protection device for power overhead network, is specifically related to the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft.
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 rotating shaft simple in structure two insulator lightning protection devices that regulate parallel connection gaps.
To achieve these goals, the technical solution adopted in the utility model is: the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft, 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 side of wire was gold utensil dead by bolted splice hinge.
Described ground connection lateral electrode pawl refers to for being flexibly connected, pawl refer to ground connection side gold utensil by bolted splice hinge extremely.
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; insulator for different length all can use; electrode more easily reaches suitable guard space by two adjustings, and in the time that overhead transmission line is struck by lightning, first protection gap will discharge.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft, comprise 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 side of wire was gold utensil hinged and hinge is dead by bolt 4.Described ground connection lateral electrode 3 pawls refer to for being flexibly connected, and pawl refers to ground connection side gold utensil hinged and hinge is dead by bolt 4.。
This lightning protection device is installed on behind the two ends of insulator, by the height of the adjustable side of wire was electrode of bolt 4, reaches suitable protection gap, and in the time that overhead transmission line is struck by lightning, first protection gap will discharge.

Claims (5)

1. the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft, 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. the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft according to claim 1, is characterized in that: one of 3,5,7 of described pawl exponent bits.
3. the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft according to claim 2, 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. the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft according to claim 3, is characterized in that: described flexible connection, pawl refers to side of wire was gold utensil hinged and hinge is dead by bolt (4).
5. the two insulator lightning protection devices that regulate parallel connection gaps of rotating shaft according to claim 4, is characterized in that: described ground connection lateral electrode (3) pawl refers to for being flexibly connected, pawl refer to ground connection side gold utensil by bolted splice hinge extremely.
CN201320781444.4U 2013-12-03 2013-12-03 Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap Expired - Fee Related CN203631987U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320781444.4U CN203631987U (en) 2013-12-03 2013-12-03 Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320781444.4U CN203631987U (en) 2013-12-03 2013-12-03 Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap

Publications (1)

Publication Number Publication Date
CN203631987U true CN203631987U (en) 2014-06-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320781444.4U Expired - Fee Related CN203631987U (en) 2013-12-03 2013-12-03 Lightning-protection device for insulator through employing rotating shaft for double-adjustment of parallel gap

Country Status (1)

Country Link
CN (1) CN203631987U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104795188A (en) * 2015-04-17 2015-07-22 国家电网公司 Adjustable parallel gap structure of linear insulator string

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104795188A (en) * 2015-04-17 2015-07-22 国家电网公司 Adjustable parallel gap structure of linear insulator string

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GR01 Patent grant
C14 Grant of patent or utility model
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