CN209804357U - Lightning protection equipment for overhead line - Google Patents
Lightning protection equipment for overhead line Download PDFInfo
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- CN209804357U CN209804357U CN201920760801.6U CN201920760801U CN209804357U CN 209804357 U CN209804357 U CN 209804357U CN 201920760801 U CN201920760801 U CN 201920760801U CN 209804357 U CN209804357 U CN 209804357U
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Abstract
the embodiment of the utility model discloses lightning protection equipment for overhead line, including insulator main part and insulated wire, insulated wire install in the insulator main part, the cover is equipped with connection structure on the insulated wire, connection structure one is served and is installed lightning protection structure, the structural cover of lightning protection is equipped with supplementary insulation structure, the utility model relates to an overhead line protection technology field, this equipment are fixed on insulated wire, and structural design is reasonable, can be applicable to various overhead insulated wire and carry out the lightning protection, and its installation is fixed convenient, need not dispose according to the specification model of insulator, and lightning protection effect is good simultaneously, and long service life can prevent effectively that the insulator of various models from causing short circuit, insulator damage and the emergence of broken string accident under the lightning impulse.
Description
Technical Field
The embodiment of the utility model provides a relate to overhead line protection technical field, concretely relates to lightning protection equipment for overhead line.
Background
the scale of the power grid construction in China is increased, and particularly, extra-high voltage alternating current and direct current transmission lines are important channel plans for energy transmission and the scale of construction is obviously increased. Meanwhile, under the background of global climate change, strong convection weather frequently occurs, the trend of lightning activity enhancement is obvious, the lightning protection of a power grid faces a plurality of outstanding problems, lightning breakage accidents occur continuously, and when lightning impacts on high-voltage wires to generate flashover discharge, the wires are easily blown.
According to the lightning stroke disconnection mechanism of the 10KV overhead insulated conductor and the operation rule of the power frequency electric arc, practice proves that the lightning stroke disconnection of the insulated conductor is caused by that induction lightning with high enough amplitude or direct lightning high voltage acts on the insulated conductor to cause the insulation layer and the insulator of the conductor to be punctured and flashover, the breakdown point on the insulation layer of the conductor is a pinhole, and the continuous electric arc can only be burnt in the pinhole. Because the 10KV line is weak in insulation, lightning strike often causes two-phase or three-phase conductor to carry out flashover to the ground, interphase flashover electric arcs are easily caused, the temperature of arc roots is high, the arc roots are concentrated and burnt together, and the conductors can be orderly burnt out in a very short time.
The existing lightning protection devices are numerous, most of the existing lightning protection devices are installed in a matched mode with insulators, the types and specifications of the insulators and the structures of the insulators are various, the lightning protection devices are difficult to install, and few lightning protection devices which do not need to be configured according to the specifications and models of the insulators are not required to be effectively popularized due to the fact that the installation process is complex, so that the problems are deeply researched, and the scheme is generated.
SUMMERY OF THE UTILITY MODEL
therefore, the embodiment of the utility model provides a lightning protection equipment for overhead line to solve the lightning protection device that current a small number need not dispose according to the specification model of insulator, often because the installation comparatively complicated and do not obtain the problem of effectual popularization.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: a lightning protection device for an overhead line comprises an insulator main body and an insulated wire, wherein the insulated wire is arranged on the insulator main body, a connecting structure is sleeved on the insulated wire, a lightning protection structure is arranged at one end of the connecting structure, and an auxiliary insulating structure is sleeved on the lightning protection structure;
The connection structure includes: the hinge assembly comprises a first arc-shaped piece, a second arc-shaped piece, a pair of hinges with the same structure and a pair of bolt assemblies with the same structure;
the first arc piece is arranged on the insulated conducting wire, a needle-shaped bulge is arranged on the inner side wall surface of the first arc piece, the second arc piece is arranged on the first arc piece, the pair of hinges are respectively connected with the first arc piece and the second arc piece, a pair of first through holes with the same structure are respectively formed in the first arc piece and the second arc piece, and the pair of bolt assemblies penetrate through the pair of first through holes;
The lightning protection structure includes: a drain electrode and a ground electrode;
The current-guiding electrode is arranged on the first arc-shaped sheet, and the grounding electrode is arranged on one side of the insulator main body.
Further, the drainage electrode includes: an arc ignition arm and an arc burning arm;
The arc striking arm is arranged on the first arc piece, the arc burning arm is arranged on the first arc piece, the arc striking arm corresponds to the arc burning arm in position, the arc striking arm faces the insulator main body, and the length of the arc burning arm is larger than that of the arc striking arm.
Further, the ground electrode includes: a grounding conducting strip and a metal ring;
The grounding conducting strip is arranged on one side of the insulator main body, and the metal ring is arranged on the tail end of the grounding conducting strip.
Further, the arc ignition arm, the arc burning arm and the first arc piece central shaft are all located on the same plane.
Further, an included angle between the arc ignition arm and the arc burning arm is an obtuse angle.
Further, the auxiliary insulation structure includes: an insulating protective sleeve and a buckle;
Insulating lag suit in lightning protection is structural, insulating lag adopts split type structure, including first insulating surface and second insulating surface, first insulating surface and the second insulating surface structure is the same, and is corresponding each other, the buckle is installed between first insulating surface and the first insulating surface.
Further, the tail end of the arc burning arm is of a spherical structure.
Furthermore, a connecting block is arranged between the first arc-shaped piece and the arc burning arm and is used for fixedly connecting the first arc-shaped piece and the arc burning arm.
The embodiment of the utility model has the following advantages: according to the lightning protection equipment for the overhead line, the diversion electrode can break down the space between the diversion electrode and the grounding electrode by using high voltage, and under the action of the high voltage, the arc space forms a strong electric field, so that the ionization action of cathode emission electrons and the arc space is enhanced, and the arc space is enabled to discharge.
when the lightning impulse voltage exceeds a specified value, the guide electrode can generate flashover discharge with the grounding electrode, so that the insulated conducting wire is comprehensively protected from being blown, and the grounding electrode can be arranged on a tower cross arm at the bottom of the insulator to form a low-voltage electrode.
The guide electrode can be vertically arranged on the load side of the insulator, the insulated wire is clamped into the connecting structure, the needle-shaped protrusion can pierce the insulating layer of the insulated wire, then the arc striking arm faces towards the insulator, and the arc striking arm faces away from the insulator.
Lead to bolt assembly, fix this equipment on insulated wire, structural design is reasonable, can be applicable to various overhead insulated wire and carry out the lightning protection, and its installation is fixed convenient, need not dispose according to the specification model of insulator, and the lightning protection is effectual simultaneously, and long service life can prevent effectively that the insulator of various models from causing the emergence of short circuit, insulator damage and broken string accident under the lightning impulse.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
fig. 1 is a schematic structural view of a lightning protection device for an overhead line according to an embodiment of the present invention;
fig. 2 is a schematic partial side view of a lightning protection device for an overhead line according to an embodiment of the present invention;
Fig. 3 is a schematic top view of a lightning protection device for an overhead line according to an embodiment of the present invention;
In the figure: 1-an insulator body; 2-an insulated wire; 3-a first arc-shaped sheet; 4-a second arc-shaped piece; 5-a hinge; 6-bolt assembly; 7-arc striking arm; 8-an arc burning arm; 9-a grounded conductive sheet; 10-a metal ring; 11-an insulating protective sleeve; 12-buckling; 13-connecting block.
Detailed Description
the present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
All the electrical components in the present application are connected with the power supply adapted to the electrical components through a wire, and an appropriate controller and an appropriate encoder should be selected according to actual conditions to meet control requirements, and specific connection and control sequences should be obtained.
Example (b): as can be seen from fig. 1-3 of the specification, the lightning protection device for the overhead line comprises an insulator main body 1 and an insulated wire 2, wherein the insulated wire 2 is arranged on the insulator main body 1, the insulated wire 2 is sleeved with a connecting structure, one end of the connecting structure is provided with a lightning protection structure, and the lightning protection structure is sleeved with an auxiliary insulating structure;
The above-mentioned connection structure includes: the first arc-shaped piece 3, the second arc-shaped piece 4, a pair of hinges 5 with the same structure and a pair of bolt assemblies 6 with the same structure are arranged in the following position relation and connection relation:
the first arc-shaped piece 3 is arranged on the insulated wire 2, the needle-shaped bulge is arranged on the inner side wall surface of the first arc-shaped piece 3, the second arc-shaped piece 4 is arranged on the first arc-shaped piece 3, the pair of hinges 5 are respectively connected with the first arc-shaped piece 3 and the second arc-shaped piece 4, a pair of first through holes with the same structure are respectively formed in the first arc-shaped piece 3 and the second arc-shaped piece 4, and the pair of bolt assemblies 6 penetrate through the pair of first through holes;
above-mentioned lightning protection structure includes: a drain electrode and a ground electrode, and the positional relationship is as follows; the connection relationship is as follows:
the drainage electrode is arranged on the first arc-shaped sheet 3, and the grounding electrode is arranged on one side of the insulator main body 1.
As can be seen from the above, in the lightning protection device for overhead line, the guide electrode can break down the space between the ground electrode and the guide electrode by high voltage, under the action of high voltage, the arc space forms a strong electric field, so that the ionization action of cathode emission electrons and the arc space is strengthened, the arc space is discharged, when the lightning impulse voltage exceeds a specified value, can generate flashover discharge between the insulating wire 2 and a grounding electrode to completely protect the insulating wire 2 from being burnt out, the grounding electrode can be arranged on a cross arm of a tower at the bottom of an insulator to form a low-voltage electrode, a flow guide electrode can be vertically arranged on the load side of the insulator, the insulating wire 2 is clamped into a first arc-shaped sheet 3 in a connecting structure, a second arc-shaped sheet 4 is buckled on the first arc-shaped sheet 3, and locked by the bolt assembly 6, and the needle-shaped protrusions of the first arc-shaped pieces 3 pierce the insulation layer of the insulated wire 2.
as a preferred aspect, further, the drainage electrode includes: the arc ignition arm 7 and the arc burning arm 8 have the following positional relationship and connection relationship:
The arc striking arm 7 is arranged on the first arc piece 3, the arc burning arm 8 is arranged on the first arc piece 3, the arc striking arm 7 corresponds to the arc burning arm 8 in position, the arc striking arm 7 faces the insulator main body 1, the length of the arc burning arm 8 is larger than that of the arc striking arm 7, and the arc length between the arc striking arm and the arc burning arm is increased.
Preferably, the ground electrode further includes: a grounding conductive sheet 9 and a metal ring 10;
The grounding conducting plate 9 is arranged on one side of the insulator main body 1, and the metal ring 10 is arranged on the tail end of the grounding conducting plate 9, so that electric arcs can be generated conveniently.
Preferably, the central axes of the arc striking arm 7, the arc burning arm 8 and the first arc-shaped piece 3 are all located on the same plane.
Preferably, the arc striking arm 7 and the arc burning arm 8 are at an obtuse angle, so as to increase the arc length therebetween.
preferably, the auxiliary insulating structure further includes: insulating lag 11 and buckle 12, its position relation and relation of connection are as follows:
Insulating lag 11 suit is structural in the lightning protection, and insulating lag 11 adopts split type structure, including first insulating surface and second insulating surface, first insulating surface and second insulating surface structure are the same, correspond each other, and buckle 12 is installed between first insulating surface and first insulating surface for insulating protection.
preferably, the end of the arc arm 8 is a spherical structure for collecting the electric charge.
Preferably, a connecting block 13 is further installed between the first arc-shaped piece 3 and the arc-burning arm 8 for fixedly connecting the first arc-shaped piece 3 and the arc-burning arm 8.
although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.
Claims (8)
1. The lightning protection equipment for the overhead line comprises an insulator main body (1) and an insulated wire (2), and is characterized in that the insulated wire (2) is arranged on the insulator main body (1), a connecting structure is sleeved on the insulated wire (2), a lightning protection structure is arranged at one end of the connecting structure, and an auxiliary insulating structure is sleeved on the lightning protection structure;
the connection structure includes: the first arc-shaped piece (3), the second arc-shaped piece (4), a pair of hinges (5) and a pair of bolt assemblies (6);
the first arc-shaped piece (3) is arranged on the insulated conducting wire (2), a needle-shaped protrusion is arranged on the inner side wall surface of the first arc-shaped piece (3), the second arc-shaped piece (4) is arranged on the first arc-shaped piece (3), the pair of hinges (5) are respectively connected with the first arc-shaped piece (3) and the second arc-shaped piece (4), a pair of first through holes are respectively formed in the first arc-shaped piece (3) and the second arc-shaped piece (4), and the pair of bolt assemblies (6) penetrate through the pair of first through holes;
the lightning protection structure includes: a drain electrode and a ground electrode;
The drainage electrode is arranged on the first arc-shaped sheet (3), and the grounding electrode is arranged on one side of the insulator main body (1).
2. the lightning protection apparatus for overhead lines according to claim 1, wherein the current-guiding electrode includes: an arc ignition arm (7) and an arc burning arm (8);
The arc ignition arm (7) is arranged on the first arc piece (3), the arc ignition arm (8) is arranged on the first arc piece (3), the arc ignition arm (7) and the arc ignition arm (8) correspond to each other in position, the arc ignition arm (7) faces the insulator main body (1), and the length of the arc ignition arm (8) is greater than that of the arc ignition arm (7).
3. the lightning protection apparatus for overhead lines according to claim 1, wherein the ground electrode includes: a grounding conducting strip (9) and a metal ring (10);
the grounding conducting strip (9) is arranged on one side of the insulator main body (1), and the metal ring (10) is arranged on the tail end of the grounding conducting strip (9).
4. lightning protection device for overhead lines according to claim 2, characterized in that the central axes of the arc ignition arm (7), the arc ignition arm (8) and the first arc-shaped piece (3) are all located on the same plane.
5. Lightning protection device according to claim 2, characterized in that the angle between the ignition arm (7) and the ignition arm (8) is obtuse.
6. The lightning protection apparatus for overhead lines according to claim 1, wherein the auxiliary insulation structure includes: an insulating protective sleeve (11) and a buckle (12);
insulating lag (11) suit in lightning protection is structural, insulating lag (11) adopt split type structure, including first insulating surface and second insulating surface, first insulating surface and the second insulating surface structure is the same, corresponds each other, buckle (12) install in between first insulating surface and the first insulating surface.
7. lightning protection device for overhead lines according to claim 2, characterized in that the ends of the arcing arms (8) are spherically shaped.
8. Lightning protection device for overhead lines according to claim 2, characterized in that a connection block (13) is arranged between the first arc-shaped blade (3) and the arc-firing arm (8), said connection block (13) being used to fixedly connect the first arc-shaped blade (3) and the arc-firing arm (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920760801.6U CN209804357U (en) | 2019-05-24 | 2019-05-24 | Lightning protection equipment for overhead line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920760801.6U CN209804357U (en) | 2019-05-24 | 2019-05-24 | Lightning protection equipment for overhead line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209804357U true CN209804357U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920760801.6U Active CN209804357U (en) | 2019-05-24 | 2019-05-24 | Lightning protection equipment for overhead line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209804357U (en) |
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2019
- 2019-05-24 CN CN201920760801.6U patent/CN209804357U/en active Active
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