CN219778595U - Earthing electroscope type protector - Google Patents
Earthing electroscope type protector Download PDFInfo
- Publication number
- CN219778595U CN219778595U CN202320385322.7U CN202320385322U CN219778595U CN 219778595 U CN219778595 U CN 219778595U CN 202320385322 U CN202320385322 U CN 202320385322U CN 219778595 U CN219778595 U CN 219778595U
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- CN
- China
- Prior art keywords
- end fitting
- insulator body
- insulating
- arc
- grounding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000001012 protector Effects 0.000 title description 2
- 239000012212 insulator Substances 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- 210000000245 forearm Anatomy 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 12
- 230000005611 electricity Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000002679 ablation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Insulators (AREA)
Abstract
The utility model relates to a grounding electroscope type protection device which comprises an insulator body, wherein an upper end fitting and a wire pressing cover which are connected through a screw rod are arranged above the insulator body, and a lower end fitting and a steel foot are arranged below the insulator body; the insulator body comprises a nonlinear resistor in the middle, an insulating tube wrapping the nonlinear resistor and an insulating jacket wrapping the insulating tube; an arc-shaped lower groove is formed above the upper end fitting, and the wire pressing cover is provided with an arc-shaped upper groove corresponding to the arc-shaped lower groove; the upper end fitting is connected with an electricity-checking grounding metal ring close to the outer side of the insulator body, and the electricity-checking grounding metal ring comprises two side arms connected with the upper end fitting and a front arm connected with the outer ends of the two side arms; the outer wall surfaces of the side arms and the upper hardware fitting parts connected with the side arms are wrapped with insulating sleeves. The device has compact and reasonable structure and long service life, and integrates the functions of lightning arrester, insulator and electricity testing and grounding.
Description
Technical Field
The utility model relates to an insulation control, in particular to a grounding electroscope type protection device.
Background
In the electric power system, electrical equipment (such as a transformer, a switch and the like) is required to be protected in a lightning protection way, and a gapless zinc oxide lightning arrester is usually arranged at the periphery of the equipment. When the upper end of the lightning arrester is led out, an insulator is required to be additionally arranged to support the lead wire to ensure that the lead wire does not displace, so that the electric safety distance is prevented from being influenced.
In the prior art, patent application number is CN201821895383.3 discloses a lightning protection and tests electric composite insulator, including the insulator body, insulator body below is provided with the insulator steel foot, and insulator body top is provided with the line ball piece that clip seat and bottom surface are equipped with the thorn tooth, and the left side of clip seat is provided with the striking stick that stretches to oblique below, and the free end of striking stick is provided with the striking head, is provided with on the insulator steel foot with striking head assorted arc extinction ball, the right side of clip seat is provided with and tests electric ground connection metal ring. The device adopts an air gap mode to discharge, and can form discharge arc, thereby seriously ablating upper and lower arc striking components; in addition, this examine electric ground connection metal ring and press from both sides line seat threaded connection, lead to its exposed screw thread position to rust easily, need carry out more maintenance or change operation, influence its life.
Disclosure of Invention
The utility model provides a grounding electricity-checking type protection device which integrates the functions of a lightning arrester, an insulator and electricity-checking grounding and has the advantages of compact and reasonable structure and long service life.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the grounding electricity-checking type protection device comprises an insulator body, wherein an upper end fitting and a wire pressing cover which are connected through a screw are arranged above the insulator body, and a lower end fitting and a steel foot are arranged below the insulator body; the insulator body comprises a nonlinear resistor in the middle, an insulating tube wrapping the nonlinear resistor and an insulating jacket wrapping the insulating tube; an arc-shaped lower groove is formed above the upper end fitting, and the wire pressing cover is provided with an arc-shaped upper groove corresponding to the arc-shaped lower groove; the upper end fitting is connected with an electricity-checking grounding metal ring close to the outer side of the insulator body, and the electricity-checking grounding metal ring comprises two side arms connected with the upper end fitting and a front arm connected with the outer ends of the two side arms; the outer wall surfaces of the side arms and the upper hardware fitting parts connected with the side arms are wrapped with insulating sleeves.
Further, the insulating sleeve extends from the side arm to the forearm and wraps around a portion of the forearm.
Further, the opposite end surfaces of the upper end fitting and the lower end fitting are provided with concave arc grooves, and two ends of the insulating tube extend outwards and are inserted into the arc grooves.
Further, the depth of the arc-shaped groove is 1/2-2/3 of the height of the upper end fitting.
Furthermore, the nonlinear resistor adopts a gapless zinc oxide nonlinear resistor.
Further, the insulating jacket and the insulating jacket are integrally formed.
Further, the insulating jacket is of an umbrella skirt structure.
The technical scheme of the utility model has the following beneficial effects:
the grounding electroscopic protection device disclosed by the utility model adopts the gapless zinc oxide nonlinear resistor as an action accessory, and discharge arc and any ablation condition are avoided through nonlinear on-off leakage of the resistor.
The upper end fitting of the device integrates a grounding electricity testing structure, and after the device is connected into a power system, system voltage can be conducted to the upper end fitting through pressing a conducting part of a conducting wire, so that electricity testing and grounding functions are realized. The upper hardware fitting of the side wall of the grounding electricity testing ring and the connecting part is protected by an insulating sleeve, so that the weather resistance protection of the grounding electricity testing ring is improved, and the service life of the grounding electricity testing ring is prolonged; the insulator body is characterized in that the insulating jacket and the insulating jacket positioned on the grounding electricity checking ring are integrally formed, the device is reasonable and compact in structural design, occupies small space and reduces maintenance workload.
On the other hand, the insulating tube wrapped outside the nonlinear resistor of the insulator body is directly inserted into the upper fitting and the lower fitting to enable the upper fitting and the lower fitting to be connected more firmly, so that the device has good mechanical characteristics, and therefore the bending resistance of the insulator is formed.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a ground-connectable electroscope type protection device;
fig. 2 is a schematic cross-sectional view of a grounding electroscope type protection device.
Detailed Description
The following examples further illustrate the utility model but are not to be construed as limiting the utility model. Modifications and substitutions to methods, procedures, or conditions of the present utility model without departing from the spirit and nature of the utility model are intended to be within the scope of the present utility model.
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings and examples. Referring to fig. 1 to 2, the grounding electroscope type protection device disclosed by the utility model comprises an insulator body, wherein an upper end fitting 2 and a wire pressing cover 1 which are connected through a screw are arranged above the insulator body, and the insulator body is of a collar structure and comprises a nonlinear resistor 4 in the middle, an insulating tube 3 wrapping the nonlinear resistor 4 and an insulating jacket 5 wrapping the insulating tube 3; the lower end fitting 6 and the steel feet 60 are arranged below the insulator body; an arc-shaped lower groove 20 is formed above the upper end fitting 2, and the wire pressing cover 1 is provided with an arc-shaped upper groove 21 corresponding to the arc-shaped lower groove 20. The upper end fitting 2 is connected with an electricity-checking grounding metal ring 7 close to the outer side of the insulator body, and the electricity-checking grounding metal ring 7 comprises two side arms connected with the upper end fitting 2 and a front arm connected with the outer ends of the two side arms; the outer wall surfaces of the side arm and the part 2 of the upper end fitting for connecting the side arm are wrapped with an insulating sleeve 70.
In the example, the upper end fitting integrates a grounding and electricity testing structure, and after the upper end fitting is connected into a power system, the system voltage can be conducted to the upper end fitting through pressing the conducting part of the conducting wire, so that the electricity testing and grounding functions are realized. The steel feet are used as a connecting structure with the cross arm of the electric pole, and are also a protective grounding connecting structure.
The arc-shaped lower groove 20 and the arc-shaped upper groove 21 form a line pressing groove structure, and the size of the line pressing groove structure can be adapted to 20-240mm 2 Is provided. The insulating sleeve 70 extends from the side arm to the forearm and wraps around a portion of the forearm, and this structure does not interfere with the overlap of the test pole, but also protects the ground test ring.
The insulating jacket 5 in the insulator body is of an umbrella skirt structure. The nonlinear resistor 4 adopts a gapless zinc oxide nonlinear resistor as an action accessory, and discharge arc and any ablation condition are avoided through nonlinear on-off leakage of the resistor. The insulating tube in the body not only serves as a placing container of the nonlinear resistor, but also has good mechanical properties, so that the bending resistance of the insulator is formed. On one hand, the insulating jacket on the outer side of the insulating tube is used for weather resistance protection of an inner structure, and on the other hand, a sufficient creepage distance is formed by the special property of the silicon rubber material and the designed umbrella skirt structure. When the overvoltage reaches a protection value, the nonlinear resistor sheet reduces the resistance to form a rapid discharge channel. After the voltage is recovered to be normal, the discharging channel can be quickly closed, and the high-resistance insulating state of the discharging channel is recovered, so that equipment and circuits are protected from being damaged.
In addition, the opposite end surfaces of the upper end fitting 2 and the lower end fitting 6 are provided with concave arc grooves 8, and two ends of the insulating tube 3 are exposed and inserted into the arc grooves 8, so that the stability and the bending resistance of the device are further improved. In a specific example, the depth of the arc-shaped groove is 1/2-2/3 of the height of the upper end fitting.
To ensure reasonable compactness of the overall construction, the insulating sheath 5 and the insulating sheath 70 are integrally formed.
The grounding electricity-checking type protection device integrates four functions, changes various products into one type during installation, greatly saves installation space, is more in construction and installation generation, is simple and convenient to construct and has high efficiency. The later maintenance is changed from multiple products to a single product, so that the maintenance work is greatly simplified.
The above examples are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (7)
1. The grounding electricity-checking type protection device comprises an insulator body, wherein an upper end fitting and a wire pressing cover which are connected through a screw are arranged above the insulator body, and a lower end fitting and a steel foot are arranged below the insulator body; the insulator is characterized in that the insulator body comprises a nonlinear resistor in the middle, an insulating tube wrapping the nonlinear resistor and an insulating jacket wrapping the insulating tube; an arc-shaped lower groove is formed above the upper end fitting, and the wire pressing cover is provided with an arc-shaped upper groove corresponding to the arc-shaped lower groove; the upper end fitting is connected with an electricity-checking grounding metal ring close to the outer side of the insulator body, and the electricity-checking grounding metal ring comprises two side arms connected with the upper end fitting and a front arm connected with the outer ends of the two side arms; the outer wall surfaces of the side arms and the upper hardware fitting parts connected with the side arms are wrapped with insulating sleeves.
2. The ground-engaging electroscopic protection of claim 1 wherein the insulating sleeve extends from the side arm to the forearm and wraps around a portion of the forearm.
3. The grounding electroscope type protection device according to claim 1, wherein the opposite end surfaces of the upper end fitting and the lower end fitting are provided with concave arc grooves, and two ends of the insulating tube extend outwards and are inserted into the arc grooves.
4. The ground-connectable electroscope type protection apparatus of claim 3, wherein the depth of the arc-shaped slot is 1/2-2/3 of the height of the upper end fitting.
5. The ground-connectable electroscopic protection of claim 1 wherein the nonlinear resistor is a gapless zinc oxide nonlinear resistor.
6. The ground-connectable electroscope type protection device of claim 1, wherein the insulating outer sleeve is of unitary construction with the insulating sleeve.
7. The ground-connectable electroscope type protection device of claim 1, wherein the insulating sheath is of umbrella skirt construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320385322.7U CN219778595U (en) | 2023-03-03 | 2023-03-03 | Earthing electroscope type protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320385322.7U CN219778595U (en) | 2023-03-03 | 2023-03-03 | Earthing electroscope type protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219778595U true CN219778595U (en) | 2023-09-29 |
Family
ID=88105615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320385322.7U Active CN219778595U (en) | 2023-03-03 | 2023-03-03 | Earthing electroscope type protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219778595U (en) |
-
2023
- 2023-03-03 CN CN202320385322.7U patent/CN219778595U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |