CN114094446A - Adjustable two-stage air gap lightning arrester - Google Patents
Adjustable two-stage air gap lightning arrester Download PDFInfo
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- CN114094446A CN114094446A CN202111389433.7A CN202111389433A CN114094446A CN 114094446 A CN114094446 A CN 114094446A CN 202111389433 A CN202111389433 A CN 202111389433A CN 114094446 A CN114094446 A CN 114094446A
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- cross arm
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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
- H01T4/02—Details
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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
- H01T4/06—Mounting arrangements for a plurality of overvoltage arresters
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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
- H01T4/08—Overvoltage arresters using spark gaps structurally associated with protected apparatus
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Abstract
The application discloses two-stage air gap arrester with adjustable includes: the device comprises a bracket, a secondary gap component and a counter; the bracket is arranged on the electric pole; the secondary clearance assembly includes: the discharge device comprises a lead cross arm, a discharge cross arm, two main discharge rods and two auxiliary discharge rods; the lead cross arm is arranged on the bracket and is connected with the lower lead; the discharging cross arm is arranged on the bracket and is arranged at intervals with the lead cross arm; the two main discharging rods are movably arranged on the lead wire cross arm and the discharging cross arm respectively, and a discharging gap is formed between the two main discharging rods; the two auxiliary discharging rods are movably arranged on the discharging cross arm, and a discharging gap is formed between the two auxiliary discharging rods; the counter is arranged on the bracket and used for counting the discharge times. Through setting up main discharging rod and supplementary discharging rod into mobilizable mode for the staff can adjust the distance of discharge gap according to the number of times of discharging that the counter calculated.
Description
Technical Field
The application relates to the technical field of arresters, in particular to an adjustable two-stage air gap arrester.
Background
At present, a power distribution network in rural areas mostly adopts an overhead form, overhead lines are wide in distribution and multiple in equipment, a line structure mainly adopts a single radiation line, and compared with other power distribution networks, the overhead lines are easy to be struck by lightning to cause overvoltage, permanent faults of the equipment are caused, so that the lines are tripped, power supply interruption is caused, and great influence is caused on production and life of people. Therefore, how to better lightning protect the distribution network lines is a concern for technicians.
The traditional lightning protection measures are that a zinc oxide lightning arrester is directly additionally arranged and a lightning protection facility with a discharge gap is adopted. Although the zinc oxide lightning arrester can prevent lightning breakage and insulator flashover to a certain extent, the service life is shortened and the installation cost is high because the lightning arrester needs to bear voltage for a long time; the mode that corresponds the setting discharge gap, current mode is the insulator that sets up the area discharge gap usually, and its discharge gap is fixed, and because the air gap accomplishes the time that the puncture process required and the structure in voltage form and clearance and the surrounding environment condition all are relevant, consequently can not guarantee that the discharge gap can both effectively work when circuit overvoltage produced at every turn and play the guard action, and lightning protection effect is unstable inadequately.
Disclosure of Invention
In view of this, the present application provides an adjustable two-stage air gap lightning arrester for solve the problem that the existing lightning protection measures cannot give consideration to long service life, can be used for a long time, and have stable lightning protection effect.
In order to achieve the above technical object, the present application provides an adjustable two-stage air gap arrester, including: the device comprises a bracket, a secondary clearance assembly and a counter;
the bracket is arranged on the electric pole;
the secondary clearance assembly includes: the discharge device comprises a lead cross arm, a discharge cross arm, two main discharge rods and two auxiliary discharge rods;
the lead cross arm is arranged on the bracket and is connected with the lower lead;
the discharge cross arm is arranged on the bracket and is arranged at intervals with the lead cross arm;
the two main discharging rods are movably arranged on the lead wire cross arm and the discharging cross arm respectively, and a discharging gap is formed between the two main discharging rods;
the two auxiliary discharge rods are movably arranged on the discharge cross arm, and a discharge gap is formed between the two auxiliary discharge rods;
one auxiliary discharging rod is electrically connected with the main discharging rod positioned on the discharging cross arm, and the other auxiliary discharging rod is connected with the grounding wire;
the counter is electrically connected with the power connection wire and used for counting the discharge times.
Furthermore, the two main discharging rods are respectively arranged at the top ends of the lead wire cross arm and the discharging cross arm;
the two auxiliary discharging rods are respectively arranged at the top end and the bottom end of the discharging cross arm.
Further, the auxiliary discharging rod at the bottom end is electrically connected with the bracket;
the grounding wire is electrically connected with the bracket.
Further, the support is a symmetrical structure, including: two transverse strips and a plurality of longitudinal strips;
the plurality of longitudinal strips are clamped between the two transverse strips;
the secondary gap assemblies comprise a plurality of secondary gap assemblies which are arranged at intervals along the length direction of the cross bar plate;
the lead wire cross arm and the discharge cross arm are respectively arranged at the two ends of the longitudinal strip plate.
Furthermore, the lead wire cross arm and the discharge cross arm are ceramic cross arms.
Further, the main discharging rod is made of hot galvanizing round steel.
Further, the auxiliary discharging rod is made of hot galvanizing round steel.
Further, the main discharging rod is connected with the lead cross arm and the discharging cross arm through a UT (UT) connecting hardware fitting;
the lower lead is connected to the UT connecting hardware fitting.
It can be seen from above technical scheme that this application provides a two-stage air gap arrester with adjustable, includes: the device comprises a bracket, a secondary gap component and a counter; the bracket is arranged on the electric pole; the secondary clearance assembly includes: the discharge device comprises a lead cross arm, a discharge cross arm, two main discharge rods and two auxiliary discharge rods; the lead cross arm is arranged on the bracket and is connected with the lower lead; the discharging cross arm is arranged on the bracket and is arranged at intervals with the lead wire cross arm; the two main discharging rods are movably arranged on the lead wire cross arm and the discharging cross arm respectively, and a discharging gap is formed between the two main discharging rods; the two auxiliary discharge rods are movably arranged on the discharge cross arm, and a discharge gap is formed between the two auxiliary discharge rods; one auxiliary discharging rod is electrically connected with the main discharging rod positioned on the discharging cross arm, and the other auxiliary discharging rod is connected with the grounding wire; the counter is arranged on the bracket and used for counting the discharge times. Through setting up two main discharging rods and two auxiliary discharging rods, can form the discharge gap respectively, constitute two-stage air gap arrester to, set up to mobilizable mode through main discharging rod and auxiliary discharging rod, make the staff adjust the distance of discharge gap according to the number of times of discharging that the counter calculated, make it reach best running state, effectively solve current lightning protection measure can't compromise long service life, can use for a long time and the stable problem of lightning protection effect.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic overall structure diagram of an adjustable two-stage air gap arrester according to an embodiment of the present disclosure;
in the figure: 1. a support; 2. a secondary clearance assembly; 3. a counter; 4. an electric pole; 5. a down lead; 6. a ground line; (7/8) the UT link fitting; 11. a horizontal bar plate; 12. a longitudinal strip plate; 21. a lead cross arm; 22. a discharge cross arm; 23. a main discharge rod; 24. and (4) auxiliary discharge rods.
Detailed Description
The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are some, but not all embodiments of the present application. 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 scope of protection claimed herein.
In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, an adjustable two-stage air gap arrester provided in an embodiment of the present application includes: the device comprises a bracket 1, a secondary gap component 2 and a counter 3; the bracket 1 is arranged on the electric pole 4; the secondary gap assembly 2 includes: lead wire cross arm 21, discharge cross arm 22, two main discharging rods 23 and two auxiliary discharging rods 24.
The lead cross arm 21 is arranged on the bracket 1 and is connected with the lower lead 5; the discharge cross arm 22 is disposed on the bracket 1 and spaced apart from the lead cross arm 21. The lead cross arm 21 and the discharge cross arm 22 may be straight cross arms having the same structure, and may be made of ceramic material.
The two main discharging rods 23 are respectively and movably arranged on the lead cross arm 21 and the discharging cross arm 22, and a first-stage discharging gap is formed between the two main discharging rods 23; the two auxiliary discharging rods 24 are movably arranged on the discharging cross arm 22, and a second-stage discharging gap is formed between the two auxiliary discharging rods 24; one auxiliary discharging rod 24 is electrically connected with the main discharging rod 23 on the discharging cross arm 22, and the other auxiliary discharging rod 24 is connected with the grounding wire 6; the counter 3 is electrically connected with a connecting wire 6 and used for counting the discharge times. The initial installation distance of the first-stage discharge gap can be 25mm, the initial installation distance of the second-stage discharge gap can be 15mm, and the method is suitable for a conventional 10kV line.
Specifically, the movable main discharging rod 23 and the movable auxiliary discharging rod can be adjusted in position according to the number of discharging times, so as to keep the first discharging gap and the second discharging gap at the optimal working positions.
Further, the support 1 is a symmetrical structure, comprising: two horizontal strips 11 and a plurality of vertical strips 12; the plurality of longitudinal strips 12 are all clamped between the two transverse strips 11.
Specifically, the bracket 1 composed of the horizontal bar plate 11 and the vertical bar plate 12 can be provided with a plurality of secondary gap assemblies 2 along the length direction of the horizontal bar plate in a manner of respectively arranging the lead cross arm 21 and the discharge cross arm 22 at both ends of the same vertical bar plate 12, without interfering with each other, and the two horizontal bar plates 11 can be used for clamping the electric pole 5.
In the present embodiment, two main discharging rods 23 are respectively disposed at the top ends of the lead cross arm 21 and the discharging cross arm 22; two auxiliary discharging rods 24 are respectively arranged at the top end and the bottom end of the discharging cross arm 22. The auxiliary discharging rod 24 and the main discharging rod 23 at the top end can be electrically connected through the UT connection fitting 8, and the auxiliary discharging rod 24 at the bottom end can be directly electrically connected with the grounding wire 6.
In the present embodiment, the auxiliary discharging rod 24 at the bottom end may be electrically connected to the bracket 1 through a UT connection fitting; the ground wire 6 is electrically connected to the bracket 1.
The main discharging rod 23 and the auxiliary discharging rod 24 may be made of hot-dip galvanized round steel.
Further, the main discharging rod 23 is connected with the lead cross arm 21 and the discharging cross arm 22 through the UT link fitting 7; the lower lead 5 is connected to the UT link fitting 7.
The UT link fitting 7 can be by foraminiferous square steel and U-shaped stick, and U-shaped stick both ends have the screw thread, can pass through the nut with the square steel and be connected. The square steel on the UT link fitting 8 can be connected with the auxiliary discharging rod 24, and the U-shaped rod arc position on the UT link fitting 8 is connected with the main discharging rod 23, can adjust the distance in discharge gap through adjusting the U-shaped rod.
The traditional zinc oxide arrester has high operation and maintenance cost, and the arrester can form a new fault point when damaged, in addition, after lightning stroke, the protection residual voltage of the zinc oxide arrester is larger, and the line reclosing can not be successful in many times. Compared with the zinc oxide arrester, the adjustable two-stage air gap arrester provided by the embodiment can effectively reduce the cost and reduce the maintenance times, thereby reducing the workload of workers.
Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (8)
1. An adjustable two-stage air gap arrester, comprising: the device comprises a bracket, a secondary gap component and a counter;
the bracket is arranged on the electric pole;
the secondary clearance assembly includes: the discharge device comprises a lead cross arm, a discharge cross arm, two main discharge rods and two auxiliary discharge rods;
the lead cross arm is arranged on the bracket and is connected with the lower lead;
the discharge cross arm is arranged on the bracket and is arranged at intervals with the lead cross arm;
the two main discharging rods are movably arranged on the lead wire cross arm and the discharging cross arm respectively, and a discharging gap is formed between the two main discharging rods;
the two auxiliary discharge rods are movably arranged on the discharge cross arm, and a discharge gap is formed between the two auxiliary discharge rods;
one auxiliary discharging rod is electrically connected with the main discharging rod positioned on the discharging cross arm, and the other auxiliary discharging rod is connected with the grounding wire;
the counter is electrically connected with the connecting wire and used for calculating the discharge times.
2. The adjustable two-stage air gap arrestor of claim 1, wherein the bracket is a symmetrical structure comprising: two transverse strips and a plurality of longitudinal strips;
the plurality of longitudinal strips are clamped between the two transverse strips;
the secondary gap assemblies comprise a plurality of secondary gap assemblies and are arranged at intervals along the length direction of the cross bar plate;
the lead wire cross arm and the discharge cross arm are respectively arranged at the two ends of the longitudinal strip plate.
3. The adjustable two-stage air gap arrester according to claim 2, wherein two main discharging rods are respectively disposed at top ends of the lead cross arm and the discharging cross arm;
and the two auxiliary discharging rods are respectively arranged at the top end and the bottom end of the discharging cross arm.
4. An adjustable two-stage air gap arrester according to claim 3, wherein the auxiliary discharge rod at the bottom end is electrically connected to the bracket;
the grounding wire is electrically connected with the bracket.
5. The adjustable two-stage air gap arrestor of claim 1, wherein the lead cross-arm and the discharge cross-arm are ceramic cross-arms.
6. The adjustable two-stage air gap arrestor of claim 1, wherein the primary discharge rod is made of hot-dip galvanized round steel.
7. The adjustable two-stage air gap arrestor of claim 1, wherein the auxiliary discharge rod is made of hot-dip galvanized round steel.
8. The adjustable two-stage air gap arrester of claim 1 wherein the main discharge rod is connected to the lead cross arm and the discharge cross arm by a UT link fitting;
the lower lead is connected to the UT connecting hardware fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111389433.7A CN114094446B (en) | 2021-11-19 | 2021-11-19 | Adjustable two-stage air gap lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111389433.7A CN114094446B (en) | 2021-11-19 | 2021-11-19 | Adjustable two-stage air gap lightning arrester |
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| Publication Number | Publication Date |
|---|---|
| CN114094446A true CN114094446A (en) | 2022-02-25 |
| CN114094446B CN114094446B (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111389433.7A Active CN114094446B (en) | 2021-11-19 | 2021-11-19 | Adjustable two-stage air gap lightning arrester |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812010A (en) * | 2014-03-12 | 2014-05-21 | 陈勃闻 | Two-stage series gap lightning flashover protector with discharge counter |
| CN110635355A (en) * | 2019-10-09 | 2019-12-31 | 杭州富阳锐明科技有限公司 | Gap lightning protection device based on electromagnetic transformation |
| CN211480883U (en) * | 2020-01-02 | 2020-09-11 | 国网福建省电力有限公司安溪县供电公司 | Fixed-gap multi-chamber gap lightning arrester capable of being replaced in electrified mode |
-
2021
- 2021-11-19 CN CN202111389433.7A patent/CN114094446B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812010A (en) * | 2014-03-12 | 2014-05-21 | 陈勃闻 | Two-stage series gap lightning flashover protector with discharge counter |
| CN110635355A (en) * | 2019-10-09 | 2019-12-31 | 杭州富阳锐明科技有限公司 | Gap lightning protection device based on electromagnetic transformation |
| CN211480883U (en) * | 2020-01-02 | 2020-09-11 | 国网福建省电力有限公司安溪县供电公司 | Fixed-gap multi-chamber gap lightning arrester capable of being replaced in electrified mode |
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| Publication number | Publication date |
|---|---|
| CN114094446B (en) | 2023-01-24 |
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