CN112562948A - Series combined gap lightning arrester - Google Patents
Series combined gap lightning arrester Download PDFInfo
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- CN112562948A CN112562948A CN202011444178.7A CN202011444178A CN112562948A CN 112562948 A CN112562948 A CN 112562948A CN 202011444178 A CN202011444178 A CN 202011444178A CN 112562948 A CN112562948 A CN 112562948A
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- insulating
- mandrel
- lightning protection
- lower electrode
- upper electrode
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
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- Insulators (AREA)
Abstract
The invention discloses a series combined gap arrester, which comprises a mandrel, a lightning protection section and an insulation section, wherein the lightning protection section and the insulation section are respectively arranged at two ends of the mandrel; the mandrel is provided with an insulating support; the insulating section comprises an insulating composite outer sleeve, an upper electrode, a lower electrode and an insulating shielding plate, the insulating composite outer sleeve is coaxially sleeved outside the mandrel, the insulating shielding plate is assembled outside the insulating support piece, the upper electrode and the lower electrode are respectively arranged on the mandrel and are positioned at two ends of the insulating composite outer sleeve and are symmetrically arranged relative to the insulating shielding plate, and the relative distance and the included angle between the upper electrode and the lower electrode are adjustable. According to the lightning arrester, the core rod penetrates through the lightning protection section and the insulation section, so that the problem that the existing lightning arrester is difficult to bear mechanical stress is solved, and the existing insulator on a line can be replaced; and through set up shielding insulation board between last electrode and lower electrode, relative distance and contained angle can freely be adjusted to two electrodes, solve current arrester too high and be difficult to the arc extinguishing and easily cause the power frequency afterflow, promoted arrester device's stability and reliability.
Description
Technical Field
The invention belongs to the technical field of lightning protection facilities of power transmission lines, and particularly relates to a series combined gap lightning arrester.
Background
The electric power industry in China benefits from scientific and technological progress, the development is rapid in recent years, the coverage area is wide and wide, the electric power industry often passes through complicated and changeable terrain and landform areas, particularly, thunderstorm weather frequently occurs in spring and summer, faults such as tripping operation and power failure are often caused by lightning disasters of a power transmission line, and the safe and stable operation of the line is seriously influenced.
Aiming at preventing lightning flashover of a line, in addition to the traditional measures of reducing tower grounding resistance, laying a lightning conductor and a coupling ground wire, adopting an unbalanced insulation mode and the like, a method of additionally arranging a line arrester on a transmission tower which is easy to suffer from lightning stroke is started in recent years so as to eliminate the lightning flashover event of the insulator at the position and improve the lightning protection performance of a power grid. According to the operation experience of the existing power transmission line, the installation of the line arrester is most direct and effective.
Because the arrester installation main mode is parallelly connected with insulator chain on the shaft tower cross arm, need additionally increase the arrester and hang the point at the cross arm, still can increase the installation degree of difficulty because of both length size differences are big simultaneously, need carry out the structural transformation to the cross arm even, the economic nature is not good enough. On the other hand, in order to guarantee the arc extinguishing effect of arrester, need increase the height of arrester, lead to the arrester high too high, further increased the installation degree of difficulty.
Disclosure of Invention
The invention aims to provide a series combination gap lightning arrester which has smaller height and can replace an insulator aiming at the defects of the prior art.
The invention provides a series combination gap arrester, which comprises a mandrel, a lightning protection section and an insulation section, wherein the lightning protection section and the insulation section are respectively arranged at two ends of the mandrel; the mandrel is provided with an insulating support; the insulating section comprises an insulating composite outer sleeve, an upper electrode, a lower electrode and an insulating shielding plate, the insulating composite outer sleeve is coaxially sleeved outside the mandrel, the insulating shielding plate is assembled outside the insulating support piece, the upper electrode and the lower electrode are respectively arranged on the mandrel and are positioned at two ends of the insulating composite outer sleeve and are symmetrically arranged relative to the insulating shielding plate, and the relative distance and the included angle between the upper electrode and the lower electrode are adjustable.
The upper electrode and the lower electrode have the same structure and respectively comprise an end seat, a support arm and a discharge head; the end seat is a nut seat, the inner end of the support arm is hinged with the mounting seat, and the outer end of the support arm is connected with the discharge head; the upper electrode and the lower electrode are both in threaded connection with the core rod through the end seat.
The discharge head is an insulating ball.
The included angle between the discharge head of the upper electrode and the discharge head of the lower electrode is 120 degrees.
The insulating shielding plate is a square insulating plate.
The lightning protection section comprises an insulating cylinder, a resistance card, a spring and a lightning protection composite outer sleeve; the insulating cylinder coaxial set up in outside the dabber, in polylith resistance card piles up and the insulating cylinder, the spring sets up between the roof of the resistance card at top and insulating cylinder, the compound overcoat of lightning protection sets up outside the insulating cylinder.
The insulating cylinder is a cylindrical epoxy cylinder.
The resistor disc is an annular zinc oxide resistor disc, the inner diameter of the resistor disc is matched with the outer diameter of the mandrel, and the outer diameter of the resistor disc is matched with the inner diameter of the insulating cylinder.
The lightning protection composite outer sleeve is an umbrella skirt which is uniformly distributed; the insulating composite coat is a flower arrangement type umbrella skirt with alternately arranged sizes.
According to the lightning arrester, the core rod penetrates through the lightning protection section and the insulation section, so that the problem that the existing lightning arrester is difficult to bear mechanical stress is solved, and the existing insulator on a line can be replaced; and through set up the shielding insulation board between last electrode and bottom electrode, relative distance and contained angle can freely be adjusted to last electrode and bottom electrode, have solved current arrester structure height and too high and be difficult to the arc extinguishing and easily cause the power frequency afterflow, have promoted the stability and the reliability of arrester device.
Drawings
FIG. 1 is a schematic cross-sectional view of a preferred embodiment of the present invention.
FIG. 2 is a schematic diagram of a possible discharge path when the relative angle between the upper and lower electrodes is 0 °.
FIG. 3 is a schematic diagram of a possible discharge path when the relative angle between the upper and lower electrodes is 90 °.
FIG. 4 is a schematic diagram of a possible discharge path when the relative angle between the upper and lower electrodes is 120 °.
Sequence numbers of the drawings:
1, a core rod;
2, annular resistance sheets; 3, insulating cylinder; 4, spring lamination; 5, lightning protection composite outer sleeve;
6, insulating the composite outer sleeve; 7-upper electrode; 8-a lower electrode; 9-an insulating shield plate; 10-insulating support.
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.
The invention is further described below with reference to the drawings and the preferred embodiments, but the scope of protection of the invention is not limited thereby. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the following, the embodiment of the present invention is described by taking a series combination gap arrester suitable for a 35kV transmission line as an example, but the protection scope of the embodiment of the present invention is not limited thereto.
As shown in fig. 1, the series combined gap arrester disclosed in this embodiment is composed of a mandrel 1, a lightning protection section and an insulation section, wherein the lightning protection section and the insulation section share the same mandrel to improve the stress effect, thereby solving the problem that the existing arrester is difficult to bear mechanical stress, and being capable of replacing the existing insulator on the line.
The mandrel 1 used a 20mm diameter glass fiber rod.
The lightning protection section consists of a resistance card 2, an insulating cylinder 3, a spring 4 and a lightning protection composite outer sleeve 5. The resistance card 2 is an annular zinc oxide resistance card, the outer diameter of the resistance card is phi 85mm, the inner diameter of the resistance card is 20mm, the thickness of the resistance card is 20mm, and the resistance cards are coaxially sleeved outside the mandrel and sequentially stacked in the insulating cylinder 3. Insulating cylinder 3 is a cylinder type epoxy section of thick bamboo, and coaxial the setting is in the lower part of dabber, and each resistance card piles up on the bobbin of insulating cylinder in proper order to set up spring 4 between resistance card and bobbin top and prevent that the resistance card from rocking. The lightning protection composite coat 5 comprises a plurality of umbrella skirts which are uniformly distributed, and the lightning protection composite coat is coaxially arranged outside the insulating cylinder.
The insulating section is composed of an insulating composite outer sleeve 6, an upper electrode 7, a lower electrode 8, an insulating shielding plate 9 and an insulating support member 10. The insulating composite outer sleeve 6 is a flower arrangement type umbrella skirt with alternately arranged sizes and is coaxially arranged at the upper part of the mandrel. The upper electrode 7 and the lower electrode 8 have the same structure and respectively comprise an end seat, a support arm and a discharge head, and the discharge head adopts an insulating ball with the diameter of 2 mm; the end seat is a nut seat, the inner end of the support arm is hinged with the mounting seat, and the outer end of the support arm is connected with the discharge head; the upper electrode and the lower electrode are both in threaded connection with the core rod through the end seat; the insulation shielding plate 9 is a square insulation plate with the size of 20mm multiplied by 20mm, the insulation shielding plate 9 is arranged outside the mandrel through an insulation support 10 and is positioned in the middle position of the upper electrode 7 and the lower electrode 8; as shown in fig. 2-4, the upper electrode 7 and the lower electrode 8 are adjusted to adjust the included angle therebetween, so that the vertical distance between the upper electrode 7 and the lower electrode 8 is 20mm, the discharge paths are different when the included angle is different, and the discharge path is longest when the included angle is 120 °.
According to the lightning arrester, the core rod penetrates through the lightning protection section and the insulation section, so that the problem that the existing lightning arrester is difficult to bear mechanical stress is solved, and the existing insulator on a line can be replaced; and through set up the shielding insulation board between last electrode and bottom electrode, relative distance and contained angle can freely be adjusted to last electrode and bottom electrode, have solved current arrester structure height and too high and be difficult to the arc extinguishing and easily cause the power frequency afterflow, have promoted the stability and the reliability of arrester device.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a series combination gap arrester which characterized in that: the lightning protection device comprises a mandrel, a lightning protection section and an insulation section, wherein the lightning protection section and the insulation section are respectively arranged at two ends of the mandrel;
the mandrel is provided with an insulating support;
the insulating section comprises an insulating composite outer sleeve, an upper electrode, a lower electrode and an insulating shielding plate, the insulating composite outer sleeve is coaxially sleeved outside the mandrel, the insulating shielding plate is assembled outside the insulating support piece, the upper electrode and the lower electrode are respectively arranged on the mandrel and are positioned at two ends of the insulating composite outer sleeve and are symmetrically arranged relative to the insulating shielding plate, and the relative distance and the included angle between the upper electrode and the lower electrode are adjustable.
2. A series combination gap arrestor as set forth in claim 1, wherein: the upper electrode and the lower electrode have the same structure and respectively comprise an end seat, a support arm and a discharge head; the end seat is a nut seat, the inner end of the support arm is hinged with the mounting seat, and the outer end of the support arm is connected with the discharge head; the upper electrode and the lower electrode are both in threaded connection with the core rod through the end seat.
3. A series combination gap arrestor as set forth in claim 2 in which: the discharge head is an insulating ball.
4. A series combination gap arrestor as set forth in claim 3 in which: the included angle between the discharge head of the upper electrode and the discharge head of the lower electrode is 120 degrees.
5. A series combination gap arrestor as set forth in claim 1, wherein: the insulating shielding plate is a square insulating plate.
6. A series combination gap arrestor as set forth in claim 1, wherein: the lightning protection section comprises an insulating cylinder, a resistance card, a spring and a lightning protection composite outer sleeve; the insulating cylinder coaxial set up in outside the dabber, in polylith resistance card piles up and the insulating cylinder, the spring sets up between the roof of the resistance card at top and insulating cylinder, the compound overcoat of lightning protection sets up outside the insulating cylinder.
7. A series combination gap arrestor as set forth in claim 6 in which: the insulating cylinder is a cylindrical epoxy cylinder.
8. A series combination gap arrestor as set forth in claim 6 in which: the resistor disc is an annular zinc oxide resistor disc, the inner diameter of the resistor disc is matched with the outer diameter of the mandrel, and the outer diameter of the resistor disc is matched with the inner diameter of the insulating cylinder.
9. A series combination gap arrestor as set forth in claim 6 in which: the lightning protection composite outer sleeve is an umbrella skirt which is uniformly distributed; the insulating composite coat is a flower arrangement type umbrella skirt with alternately arranged sizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011444178.7A CN112562948A (en) | 2020-12-11 | 2020-12-11 | Series combined gap lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011444178.7A CN112562948A (en) | 2020-12-11 | 2020-12-11 | Series combined gap lightning arrester |
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| Publication Number | Publication Date |
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| CN112562948A true CN112562948A (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011444178.7A Pending CN112562948A (en) | 2020-12-11 | 2020-12-11 | Series combined gap lightning arrester |
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| CN (1) | CN112562948A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957096A (en) * | 2012-10-24 | 2013-03-06 | 国家电网公司 | Gap adjusting mechanism for 500-kV pure air gap surge arrester |
| CN205861841U (en) * | 2016-08-08 | 2017-01-04 | 国网湖南省电力公司 | A kind of anti-icing anti-thunder insulator assay device |
| CN106782940A (en) * | 2017-01-24 | 2017-05-31 | 江苏智达高压电气有限公司 | A kind of high-voltage direct-current sleeve of electric resistance partial pressure |
| CN107481820A (en) * | 2017-08-18 | 2017-12-15 | 国网湖南省电力公司 | A kind of anti-thunder insulator and its manufacture method |
-
2020
- 2020-12-11 CN CN202011444178.7A patent/CN112562948A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957096A (en) * | 2012-10-24 | 2013-03-06 | 国家电网公司 | Gap adjusting mechanism for 500-kV pure air gap surge arrester |
| CN205861841U (en) * | 2016-08-08 | 2017-01-04 | 国网湖南省电力公司 | A kind of anti-icing anti-thunder insulator assay device |
| CN106782940A (en) * | 2017-01-24 | 2017-05-31 | 江苏智达高压电气有限公司 | A kind of high-voltage direct-current sleeve of electric resistance partial pressure |
| CN107481820A (en) * | 2017-08-18 | 2017-12-15 | 国网湖南省电力公司 | A kind of anti-thunder insulator and its manufacture method |
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Application publication date: 20210326 |
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