CN112332220A - Built-in series gap lightning arrester of distribution line - Google Patents
Built-in series gap lightning arrester of distribution line Download PDFInfo
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- CN112332220A CN112332220A CN202011125070.1A CN202011125070A CN112332220A CN 112332220 A CN112332220 A CN 112332220A CN 202011125070 A CN202011125070 A CN 202011125070A CN 112332220 A CN112332220 A CN 112332220A
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- 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
- H01T4/16—Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
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- 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
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Abstract
The invention discloses a built-in series gap arrester of a distribution line, which comprises an arrester, a hollow insulator, a gap structure lightning current discharging device, a grounding terminal, a bolt, a conductor, a disconnector, an installation base, a drop-out arrester, a snap ring and a bracket. The lightning protection function of the device can improve the safe operation level of the distribution network line and improve the power supply reliability; the hot-line work installation mode of supporting design reduces the loss of power failure, has further improved the power supply reliability for power supply enterprise and has provided powerful technical guarantee.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a built-in series gap lightning arrester for a distribution line.
Background
The line arrester is mainly used for limiting the atmospheric overvoltage to cause the flashover of a pole tower insulator, is one of important protection devices for ensuring the safe operation of an electric power system, is a lightning protection device for popularizing and applying the electric power system, and often meets the conditions of severe operation environment as follows: the service life of the line arrester is directly influenced by dirt, inflow water, high-current impact and high-current impact, thermal breakdown and even explosion accidents can occur in the process of operation, and the line arrester needs to monitor the operation state on line in order to ensure the normal function of the line arrester.
The line arrester mainly has zero clearance and takes two main types of line arresters in series gap at present, and zero clearance line arrester can adopt conventional detection can effectively monitor the current situation, to taking the series gap because the clearance plays the isolation effect, does not have leakage current in normal operating, adopts conventional detection and counter mode can not directly effectively monitor the degradation of arrester.
The lightning protection design is not basically made for the original distribution network overhead line, equipment lightning protection is carried out by means of lightning arresters which are arranged on the line in a matched mode and matched with equipment of a switch and a transformer, the overhead line is high in failure probability after being struck by lightning, and lightning protection is carried out by means of the operation and maintenance unit by means of the lightning arresters, discharge gaps and the like arranged on the overhead line in the later period as required.
In recent years, lightning protection design is made for strengthening lightning protection of distribution network lines and reducing lightning fault tripping, the lightning protection design is mainly matched with a newly-built line for installation, and if the lightning protection design is used on an original operation line, power failure is needed during installation, so that more reliability influence is caused.
Disclosure of Invention
The invention aims to provide a lightning arrester with a series gap built in a distribution line, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a distribution lines embeds series gap arrester, includes arrester, hollow insulator, clearance structure lightning current discharge device, earthing terminal, bolt, conductor, disconnector, installation base, drop-out arrester, snap ring, support constitution, the arrester openly top is equipped with the conductor, the positive top movable mounting of conductor has hollow insulator, the positive bottom central point of arrester puts movable mounting and has the earthing terminal, the positive top central point of hollow insulator puts movable mounting and has the bolt, the positive bottom movable mounting of arrester has the installation base, the positive right side fixedly connected with support of installation base, the positive right side fixedly connected with snap ring of support, the positive bottom swing joint of snap ring has the disconnector, the positive top swing joint of drop-out arrester has latch device.
Preferably, the hollow insulator is a single pole and meets the voltage class of 10kV, the middle part of the hollow insulator is hollow, the upper part of the hollow insulator is a cover type, and the bottom of the hollow insulator is provided with a screwing type cover which can be opened.
Preferably, the lightning current discharging device is arranged in the hollow insulator, and is provided with a discharge gap striking head which forms a discharge gap with the arc contact of the pile head on the lightning arrester.
Preferably, positive top movable mounting of conductor has clearance structure thunder and lightning current discharge device, the positive bottom central point of arrester puts movable mounting and has the earthing terminal, positive top central point of clearance structure thunder and lightning current discharge device puts movable mounting and has the bolt, the positive bottom movable mounting of arrester has the installation base, the positive right side fixedly connected with support of installation base, the positive right side fixedly connected with snap ring of support, the positive bottom swing joint of snap ring has the disconnector, the positive top swing joint of drop-out arrester has clamping device.
Preferably, the gap structure lightning current discharging device is placed in the middle of the hollow insulator, the bottom cover is sleeved on a screw rod at the upper end of the lightning arrester and fixed by a bolt, an arc connecting contact of the gap structure lightning current discharging device is arranged on the screw rod of the bottom cover, an arc striking head is arranged at the top of the hollow insulator in a cover mode and penetrates out of the outer wall of the hollow insulator and fixed by the bolt, and the upper end of the bolt can be used for being connected and led in a live-line running circuit.
Preferably, the lightning arrester is made of a zinc oxide material.
Preferably, the right side of the front surface of the mounting base is fixedly connected with the bracket to form a U-shaped structure, and is movably connected with the lightning arrester and the drop-out lightning arrester.
Preferably, the detacher movably connected with the bottom end of the front surface of the snap ring is cylindrical, and the bottom end of the front surface of the detacher is movably connected with a grounding end movably arranged at the center position of the bottom end of the front surface of the lightning arrester.
Preferably, the clamping device movably connected with the top end of the front surface of the drop-out arrester is movably connected with the bottom end of the lightning current discharge device of the gap structure on the left side of the front surface.
Compared with the prior art, the invention has the beneficial effects that:
(1) the lightning protection function of the device can improve the safe operation level of the distribution network line and improve the power supply reliability; the hot-line work installation mode of supporting design reduces the loss of power failure, has further improved the power supply reliability for power supply enterprise and has provided powerful technical guarantee.
(2) This built-in series gap arrester of distribution lines, when joining in marriage the circuit of net in service through last pile head access, it is electrified to go up the pile head, keep its insulating properties through hollow insulator, the striking head of going up the pile head forms electrical insulation through air gap with the arc contact of connecing of pile head down, when distribution lines suffered the thunderbolt, lightning current and overvoltage were here discharge gap department puncture air, form and discharge, the rethread arrester will strike by lightning overvoltage and discharge and introduce the ground, play the lightning protection effect. The lightning protection function of the built-in series air gap and the lightning arrester is adopted, and the lightning is mainly led to flow into the ground through the lightning arrester after air is punctured by lightning, so that the direct-striking discharge of the lightning can be reduced to form grounding to enable power transformation protection to trip.
(3) This built-in series gap arrester of distribution lines, through drop out arrester front top swing joint's latch device, and latch device and front left side clearance structure lightning current discharge device bottom swing joint, can further effectively consolidate the lightning-arrest of this built-in series gap of distribution lines, improve the life of arrester, accomplish non-maintaining, the practicality is strong, easily uses widely.
(4) The lightning arrester with the series gap is arranged in the distribution line, the lightning arrester is made of zinc oxide materials, and the current flowing through the lightning arrester is extremely small (microampere or milliampere) at normal working voltage by utilizing the good nonlinear volt-ampere characteristic of the zinc oxide; when overvoltage acts, the resistance drops sharply, and the energy of the overvoltage is released, so that the protection effect is achieved. The difference between the lightning arrester and the traditional lightning arrester is that the lightning arrester has no discharge gap and plays the role of current leakage and disconnection by utilizing the nonlinear characteristic of zinc oxide.
(5) This distribution lines embeds series gap arrester, for reducing distribution network line thunderbolt fault rate, according to actual work experience and needs, takes a fire through adopting live working, and its installation is more convenient, swift, high-efficient, safety, has improved the power supply reliability, has improved the ability that distribution network line resisted natural disasters.
Drawings
Fig. 1 is a schematic view of the overall structure of a hollow insulator with a built-in arrester on the front side of the invention;
FIG. 2 is a schematic view of the overall structure of the hollow insulator tool with the built-in arrester on the front side according to the present invention;
fig. 3 is a schematic view of a lightning current discharge structure of a gap structure of a built-in arrester on the front side of the invention;
fig. 4 is a schematic view of the overall structure of the lightning current discharge tool with the gap structure of the built-in arrester on the front side of the invention;
FIG. 5 is a schematic structural view of a front hollow insulator according to the present invention;
fig. 6 is a schematic structural view of a gap structure lightning current discharge device in a top view.
In the figure: the lightning arrester comprises a lightning arrester body 1, a hollow insulator body 2, a lightning current discharge device with a gap structure 3, a grounding end 4, a bolt 5, a conductor 6, a disconnector 7, an installation base 8, a drop-out lightning arrester body 9, a clamping ring 10, a support 11 and a clamping device 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that in the description of the present invention, it is to be understood that the terms "longitudinal", "length", "circumferential", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The first embodiment is as follows:
referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a built-in series gap arrester of distribution lines, including arrester 1, hollow insulator 2, clearance structure lightning current discharge device 3, earthing terminal 4, bolt 5, conductor 6, disconnector 7, installation base 8, drop-out arrester 9, snap ring 10, support 11 constitutes, 1 openly tops of arrester are equipped with conductor 6, 6 openly tops movable mounting of conductor has hollow insulator 2, 1 openly bottom central point of arrester puts movable mounting earthing terminal 4, 2 openly tops central point movable mounting of hollow insulator has bolt 5, 1 openly bottom movable mounting of arrester has installation base 8, 8 openly right sides fixedly connected with supports 11 of installation base, 11 openly right sides fixedly connected with snap ring 10 of supports, snap ring 10 openly bottom swing joint has disconnector 7, 9 openly tops swing joint has latch device 12 of drop-out arrester.
The hollow insulator 2 is a single pole, which meets the voltage class of 10kV, the middle part is hollow, the upper part of the hollow insulator 2 is a cover type, and the bottom of the hollow insulator 2 is designed to be opened by a screwing type cover.
The lightning current discharge device is arranged in the hollow insulator 2, a discharge gap arc striking head is arranged on the lightning current discharge device, and a discharge gap is formed between the lightning current discharge device and an arc contact of a pile head on the lightning arrester 1.
The lightning arrester 1 is made of zinc oxide material.
The right side of the front surface of the mounting base 8 is fixedly connected with the bracket 11 to form a U-shaped structure, and is movably connected with the lightning arrester 1 and the drop-out lightning arrester 9.
The detacher 7 movably connected with the bottom end of the front surface of the snap ring 10 is in a cylindrical shape, and the bottom end of the front surface of the detacher 7 is movably connected with the grounding end 4 movably arranged at the center position of the bottom end of the front surface of the lightning arrester 1.
The clamping device 12 movably connected with the top end of the front surface of the drop-out arrester 9 is movably connected with the bottom end of the lightning current discharge device 3 with the gap structure on the left side of the front surface.
Example two:
referring to fig. 3-4, the present invention provides a technical solution: a distribution line built-in series gap arrester comprises an arrester 1, a hollow insulator 2, a gap structure lightning current discharge device 3, a grounding terminal 4, a bolt 5, a conductor 6, a separator 7, an installation base 8, a drop-out arrester 9, a snap ring 10 and a bracket 11, wherein the conductor 6 is arranged at the top end of the front face of the arrester 1, the hollow insulator 2 is movably installed at the top end of the front face of the conductor 6, the grounding terminal 4 is movably installed at the center position of the bottom end of the front face of the arrester 1, the bolt 5 is movably installed at the center position of the top end of the front face of the hollow insulator 2, the installation base 8 is movably installed at the bottom end of the front face of the arrester 1, the right side of the front surface of the bracket 11 is fixedly connected with a snap ring 10, the bottom end of the front surface of the snap ring 10 is movably connected with a disconnector 7, and the top end of the front surface of the drop-out arrester 9 is movably connected with a clamping device 12.
The positive top end movable mounting of conductor 6 has clearance structure lightning current discharge device 3, 1 positive bottom central point of arrester puts movable mounting has earthing terminal 4, 3 positive top central points of clearance structure lightning current discharge device have bolt 5, 1 positive bottom movable mounting of arrester has installation base 8, 8 positive right sides fixedly connected with supports 11 of installation base, 11 positive right sides fixedly connected with snap ring 10 of support, snap ring 10 positive bottom swing joint has disconnector 7, 9 positive top swing joint of drop-out arrester has latch device 12.
The gap structure lightning current discharge device 3 is placed in the middle of the hollow insulator 2, the bottom cover is sleeved on a screw rod at the upper end of the lightning arrester 1 and fixed by a bolt 5, an arc connecting contact of the gap structure lightning current discharge device 3 is arranged on the screw rod of the bottom cover, an arc striking head is arranged at the top of the cover type of the hollow insulator 2 and penetrates out of the outer wall of the hollow insulator, the hollow insulator is fixed by the bolt 5, and the upper end of the bolt 5 can be used for being connected and guided in a live-line.
The lightning arrester 1 is made of zinc oxide material.
The right side of the front surface of the mounting base 8 is fixedly connected with the bracket 11 to form a U-shaped structure, and is movably connected with the lightning arrester 1 and the drop-out lightning arrester 9.
The detacher 7 movably connected with the bottom end of the front surface of the snap ring 10 is in a cylindrical shape, and the bottom end of the front surface of the detacher 7 is movably connected with the grounding end 4 movably arranged at the center position of the bottom end of the front surface of the lightning arrester 1.
The clamping device 12 movably connected with the top end of the front surface of the drop-out arrester 9 is movably connected with the bottom end of the lightning current discharge device 3 with the gap structure on the left side of the front surface.
When the lightning arrester with the series gap is used in the distribution line, the lightning protection function can be realized when the distribution line runs in a live mode, the lightning protection function of the lightning arrester can improve the safe running level of the distribution line, and the power supply reliability is improved; the hot-line work installation mode designed in a matching way reduces the power failure loss and provides powerful technical support for further improving the power supply reliability for power supply enterprises; when the upper pile head is connected to a line in the operation of a distribution network, the upper pile head is electrified, the insulating property of the upper pile head is kept through the hollow insulator 2, an arc striking head of the upper pile head and an arc contact of the lower pile head form electrical insulation through an air gap, when the distribution line is struck by lightning, lightning current and overvoltage break down air at a discharge gap at the position to form discharge, and the lightning overvoltage is discharged to the ground through the lightning arrester 1 to play a lightning protection role. The lightning protection function of the built-in series air gap and the lightning arrester 1 is adopted, mainly, lightning is led to flow into the ground through the lightning arrester 1 after air is broken through by lightning, and the phenomenon that the lightning directly strikes and discharges to form the ground so as to enable the power transformation protection to trip is reduced; the clamping device 12 is movably connected with the top end of the front side of the drop-out lightning arrester 9, and the clamping device 12 is movably connected with the bottom end of the lightning current discharge device 3 with a gap structure on the left side of the front side, so that lightning protection of a built-in series gap of the distribution line can be further effectively reinforced, the service life of the lightning arrester 1 is prolonged, maintenance is free, the practicability is high, and the popularization and the use are easy; the lightning arrester 1 is made of zinc oxide material, and the current flowing through the lightning arrester 1 is extremely small (microampere or milliampere) at normal working voltage by utilizing the good nonlinear volt-ampere characteristic of the zinc oxide; when overvoltage acts, the resistance drops sharply, and the energy of the overvoltage is released, so that the protection effect is achieved. The difference between the lightning arrester 1 and the traditional lightning arrester 1 is that the lightning arrester has no discharge gap and plays the roles of current leakage and disconnection by utilizing the nonlinear characteristic of zinc oxide; in order to reduce the lightning stroke fault rate of the distribution network line, live working fire lapping is adopted according to actual working experience and requirements, the installation is more convenient, rapid, efficient and safe, the power supply reliability is improved, and the capability of the distribution network line for resisting natural disasters is improved.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (9)
1. The utility model provides a built-in series gap arrester of distribution lines, includes arrester (1), hollow insulator (2), clearance structure lightning current discharge device (3), earthing terminal (4), bolt (5), conductor (6), breaks away from ware (7), installation base (8), drop-out arrester (9), snap ring (10), support (11) and constitutes, arrester (1) openly top is equipped with conductor (6), its characterized in that: conductor (6) openly top movable mounting have hollow insulator (2), arrester (1) openly bottom central point puts movable mounting have earthing terminal (4), hollow insulator (2) openly top central point puts movable mounting have bolt (5), arrester (1) openly bottom movable mounting has installation base (8), installation base (8) openly right side fixedly connected with support (11), support (11) openly right side fixedly connected with snap ring (10), snap ring (10) openly bottom swing joint has disconnector (7), drop-out arrester (9) openly top swing joint has latch device (12).
2. The lightning arrester with built-in series gap for distribution line according to claim 1, characterized in that: the hollow insulator (2) is a single pole, the voltage class of 10kV is met, the middle of the hollow insulator is hollow, the upper part of the hollow insulator (2) is a cover type, and the bottom of the hollow insulator (2) is designed to be opened by a screwing type cover.
3. The lightning arrester with built-in series gap for distribution line according to claim 1, characterized in that: the lightning current discharging device is arranged in the hollow insulator (2), a discharging gap arc striking head is arranged on the lightning current discharging device, and a discharging gap is formed between the lightning current discharging device and an arc contact of a pile head on the lightning arrester (1).
4. The lightning arrester with built-in series gap for distribution line according to claim 1, characterized in that: conductor (6) openly top movable mounting clearance structure thunder and lightning current discharge apparatus (3), arrester (1) openly bottom central point puts movable mounting and has earthing terminal (4), clearance structure thunder and lightning current discharge apparatus (3) openly top central point puts movable mounting and has bolt (5), arrester (1) openly bottom movable mounting has installation base (8), installation base (8) openly right side fixedly connected with support (11), support (11) openly right side fixedly connected with snap ring (10), snap ring (10) openly bottom swing joint has disconnector (7), drop-out arrester (9) openly top swing joint has latch device (12).
5. The distribution line built-in series gap arrester of claim 4, wherein: the gap structure lightning current discharging device (3) is placed in the middle of the hollow insulator (2), the bottom cover is sleeved on a screw rod at the upper end of the lightning arrester (1) and fixed through a bolt (5), an arc contact of the gap structure lightning current discharging device (3) is installed on the screw rod of the bottom cover, an arc striking head is installed at the cover type top of the hollow insulator (2) and penetrates out of the outer wall of the hollow insulator, the hollow insulator is fixed through the bolt (5), and the upper end of the bolt (5) can be used for being connected and guided in a circuit in live operation.
6. The lightning arrester with built-in series gap for distribution line according to claim 1, characterized in that: the lightning arrester (1) is made of zinc oxide materials.
7. The lightning arrester with built-in series gap for distribution line according to claim 1, characterized in that: the right side of the front surface of the mounting base (8) is fixedly connected with the bracket (11) to form a U-shaped structure, and is movably connected with the lightning arrester (1) and the drop-out lightning arrester (9).
8. The lightning arrester with built-in series gap for distribution line according to claim 1, characterized in that: the detacher (7) movably connected with the bottom end of the front surface of the snap ring (10) is in a cylindrical shape, and the bottom end of the front surface of the detacher (7) is movably connected with a grounding end (4) movably arranged at the center position of the bottom end of the front surface of the lightning arrester (1).
9. The lightning arrester with built-in series gap for distribution line according to claim 1, characterized in that: the clamping device (12) movably connected with the top end of the front surface of the drop-out arrester (9) is movably connected with the bottom end of the lightning current discharging device (3) with the gap structure on the left side of the front surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011125070.1A CN112332220A (en) | 2020-10-20 | 2020-10-20 | Built-in series gap lightning arrester of distribution line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011125070.1A CN112332220A (en) | 2020-10-20 | 2020-10-20 | Built-in series gap lightning arrester of distribution line |
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| CN112332220A true CN112332220A (en) | 2021-02-05 |
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| CN202011125070.1A Pending CN112332220A (en) | 2020-10-20 | 2020-10-20 | Built-in series gap lightning arrester of distribution line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114400119A (en) * | 2021-12-17 | 2022-04-26 | 南阳金牛电气有限公司 | Separable gapless lightning arrester and manufacturing method thereof |
| CN115693405A (en) * | 2022-11-14 | 2023-02-03 | 云南电网有限责任公司西双版纳供电局 | Interval detachable arrester |
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| CN204966184U (en) * | 2015-08-21 | 2016-01-13 | 河北沈三开电器制造有限公司 | Drop -out circuit overvoltage protection device |
| CN206134637U (en) * | 2016-10-04 | 2017-04-26 | 安徽宇宝电气有限公司 | Lightning -arrest type drop out fuse |
| CN207442416U (en) * | 2017-10-13 | 2018-06-01 | 大连北方避雷器有限公司 | Drop-type arrester |
| CN208240428U (en) * | 2018-06-13 | 2018-12-14 | 泰州学院 | A kind of novel series gap composite insulating metal oxide lightning arrester |
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| CN202616602U (en) * | 2012-06-18 | 2012-12-19 | 辽宁华隆电力科技有限公司 | Dropping type series external gap lightning arrester |
| CN204966184U (en) * | 2015-08-21 | 2016-01-13 | 河北沈三开电器制造有限公司 | Drop -out circuit overvoltage protection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114400119A (en) * | 2021-12-17 | 2022-04-26 | 南阳金牛电气有限公司 | Separable gapless lightning arrester and manufacturing method thereof |
| CN115693405A (en) * | 2022-11-14 | 2023-02-03 | 云南电网有限责任公司西双版纳供电局 | Interval detachable arrester |
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Application publication date: 20210205 |