CN219918322U - High-voltage wall bushing with double shielding - Google Patents
High-voltage wall bushing with double shielding Download PDFInfo
- Publication number
- CN219918322U CN219918322U CN202320434464.8U CN202320434464U CN219918322U CN 219918322 U CN219918322 U CN 219918322U CN 202320434464 U CN202320434464 U CN 202320434464U CN 219918322 U CN219918322 U CN 219918322U
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- China
- Prior art keywords
- voltage
- net
- low
- conductive copper
- copper bar
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052802 copper Inorganic materials 0.000 claims abstract description 20
- 239000010949 copper Substances 0.000 claims abstract description 20
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 230000005684 electric field Effects 0.000 abstract description 8
- 230000032683 aging Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The utility model discloses a double-shielded high-voltage wall bushing which comprises an insulating shell, a conductive copper bar and a mounting flange, wherein the insulating shell is hollow in the inside, the conductive copper bar is arranged in the insulating shell, the mounting flange is arranged in the middle of the insulating shell, a round high-voltage equalizing net is arranged in the insulating shell and is connected with the conductive copper bar through an insert, a low-voltage shielding net is arranged on the outer layer of the high-voltage equalizing net, a flange insert is connected onto the mounting flange, one end of the flange insert is connected with the low-voltage shielding net, and the other end of the flange insert is grounded. The utility model additionally comprises a high-voltage equalizing net and a low-voltage shielding net, so that a uniform electric field is ensured between a high-voltage electric field and a low voltage, and the high-voltage wall bushing insulation aging and breakdown caused by high-voltage discharge generated by the conductive copper bar are avoided, thereby ensuring the normal operation of equipment.
Description
Technical Field
The utility model relates to the technical field of high-voltage electrical appliances, in particular to a high-voltage wall bushing with double shielding.
Background
In the technical field of high-voltage electrical appliances, a high-voltage wall bushing is a device for guiding a high-voltage power supply to pass through a wall from indoor to outdoor or from outdoor to indoor, or through a shell wall from inside to outside of a high-voltage switch or a transformer. The basic principle of the high-voltage wall bushing is as follows: the conductive copper bar in the high-voltage metal shell equipment passes through the high-voltage wall bushing to reach the other high-voltage equipment, and the high-voltage wall bushing is arranged on the high-voltage electrical equipment to play a role in isolating high-voltage discharge to the ground and conducting.
When the conductive copper bars pass through the high-voltage wall bushing, the distance between the conductive copper evacuation is nearest to the metal shell of the high-voltage electric equipment, the conductive copper bars are all in a cuboid shape, high-voltage discharge is easy to generate due to irregular shapes, and if the high-voltage wall bushing discharges for a long time, the high-voltage wall bushing is aged and broken down in insulation, and even the equipment cannot normally operate.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the high-voltage wall bushing with the double shields, which is additionally provided with the high-voltage equalizing net and the low-voltage shielding net, so that a uniform electric field is ensured between a high-voltage electric field and a low voltage, and the high-voltage wall bushing insulation aging and breakdown caused by high-voltage discharge generated by the conductive copper bar are avoided, and the normal operation of equipment is ensured.
The technical scheme provided by the utility model is as follows:
the utility model provides a take double-shielded high pressure wall bushing, includes and is equipped with inside hollow insulating housing, set up in insulating housing inside electrically conductive copper bar and set up in insulating housing middle part's mounting flange, insulating housing's inside is provided with and is the high-pressure voltage-sharing net of circle, high-pressure voltage-sharing net pass through the inserts with electrically conductive copper bar is connected, high-pressure voltage-sharing net's skin is provided with the low pressure shielding net, be connected with the flange inserts on the mounting flange, the one end of flange inserts with the low pressure shielding net is connected, the other end ground connection of flange inserts; an insulating layer is arranged between the high-voltage equalizing net and the low-voltage shielding net, and the thickness of the insulating layer is set to be more than 30mm; the insulation strength of the high-voltage wall bushing is set to be 35kV/mm; the creepage distance between the high-voltage equalizing net and the low-voltage shielding net is set to be more than 850mm; and an umbrella skirt is arranged on the insulating shell.
The beneficial effects of the utility model are as follows:
1) The high-voltage equalizing net plays a role in uniform electric field;
2) The high-voltage equalizing network is connected with the conductive copper bar, so that the voltage of the conductive copper bar is consistent with the voltage of the high-voltage equalizing network;
3) The low-voltage shielding net correspondingly receives an electric field generated by the high-voltage equalizing net.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a side view of fig. 1.
In the figure: 1. an insulating housing; 2. conductive copper bars; 3. a flange insert; 4. a mounting flange; 5. a high-voltage equalizing net; 6. a low voltage shielding net; 7. an insulating layer; 8. umbrella skirt.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
It should be noted that, in the description of the present utility model, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are shown based on the orientation or the positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Examples
As shown in fig. 1 to 2, a high-voltage wall bushing with double shielding comprises an insulating shell 1 with a hollow inside, a conductive copper bar 2 arranged in the insulating shell 1 and a mounting flange 4 arranged in the middle of the insulating shell 1, wherein a circular high-voltage equalizing net 5 is arranged in the insulating shell 1, the high-voltage equalizing net 5 is connected with the conductive copper bar 2 through an insert, a low-voltage shielding net 6 is arranged on the outer layer of the high-voltage equalizing net 5, a flange insert 3 is connected to the mounting flange 4, one end of the flange insert 3 is connected with the low-voltage shielding net 6, and the other end of the flange insert 3 is grounded; an insulating layer 7 is arranged between the high-voltage equalizing net 5 and the low-voltage shielding net 6, and the thickness of the insulating layer is set to be more than 30mm; the insulation strength of the high-voltage wall bushing is set to be 35kV/mm, so that the insulation strength of high voltage to the ground is ensured; the creepage distance between the high-voltage equalizing net 5 and the low-voltage shielding net 6 is set to be more than 850mm, so that the corona phenomenon caused by the low-voltage tip is solved; an umbrella skirt 8 is arranged on the insulating shell 1, so that the surface climbing distance is increased.
The working principle of the utility model is as follows: the high-voltage equalizing net 5 is arranged at the middle part of the metal shell of the equipment to play a role of uniform electric field, and is connected with the conductive copper bar 2 to ensure that the voltage of the conductive copper bar 2 is consistent with the voltage of the high-voltage equalizing net 5; and a low-voltage shielding net 6 is correspondingly arranged on the outer layer of the high-voltage-sharing net 5 and correspondingly receives an electric field generated by the high-voltage-sharing net 5, the insulation thickness of the high-voltage-sharing net 5 to the low-voltage shielding net 6 is set to be more than 30mm, an epoxy material with the insulation strength of 35kV/mm is adopted, the insulation strength of high voltage to the ground is ensured, the creepage distance from the high-voltage-sharing net 5 to the low-voltage mounting flange surface is more than 850mm, the standard distance is more than 810mm, and the corona phenomenon caused by the low-voltage tip is solved, so that the problem that the high-voltage end of electrical equipment discharges to a metal shell is solved, and the reliable operation of the electrical equipment is ensured.
The above examples are provided for illustrating 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 principle and spirit of the present utility model.
Claims (1)
1. The utility model provides a take double-shielded high pressure wall bushing, includes is equipped with inside hollow insulating housing (1), set up in conductive copper bar (2) in insulating housing (1) inside and set up in mounting flange (4) at insulating housing (1) middle part, a serial communication port, the inside of insulating housing (1) is provided with and is circular high pressure voltage-sharing net (5), high pressure voltage-sharing net (5) pass through the inserts with conductive copper bar (2) are connected, the skin of high pressure voltage-sharing net (5) is provided with low pressure shielding net (6), be connected with flange inserts (3) on mounting flange (4), one end of flange inserts (3) with low pressure shielding net (6) are connected, the other end ground connection of flange inserts (3);
an insulating layer (7) is arranged between the high-voltage equalizing net (5) and the low-voltage shielding net (6), and the thickness of the insulating layer is set to be more than 30mm;
the insulation strength of the high-voltage wall bushing is set to be 35kV/mm;
the creepage distance between the high-voltage equalizing net (5) and the low-voltage shielding net (6) is set to be more than 850mm;
an umbrella skirt (8) is arranged on the insulating shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320434464.8U CN219918322U (en) | 2023-03-08 | 2023-03-08 | High-voltage wall bushing with double shielding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320434464.8U CN219918322U (en) | 2023-03-08 | 2023-03-08 | High-voltage wall bushing with double shielding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219918322U true CN219918322U (en) | 2023-10-27 |
Family
ID=88440745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320434464.8U Active CN219918322U (en) | 2023-03-08 | 2023-03-08 | High-voltage wall bushing with double shielding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219918322U (en) |
-
2023
- 2023-03-08 CN CN202320434464.8U patent/CN219918322U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |