CN209785721U - Shielding type mutual inductor junction box device - Google Patents
Shielding type mutual inductor junction box device Download PDFInfo
- Publication number
- CN209785721U CN209785721U CN201920960110.0U CN201920960110U CN209785721U CN 209785721 U CN209785721 U CN 209785721U CN 201920960110 U CN201920960110 U CN 201920960110U CN 209785721 U CN209785721 U CN 209785721U
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- CN
- China
- Prior art keywords
- box body
- inductor
- mutual
- cover plate
- mutual inductor
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- 238000007789 sealing Methods 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000005684 electric field Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The utility model provides a shielding type mutual inductor junction box device, which comprises a box body, wherein one surface of the box body is connected with a mutual inductor, and the other surface is provided with a cover plate; a first sealing gasket is arranged on the surface of the box body combined with the mutual inductor, and a second sealing gasket is arranged on the surface of the box body combined with the cover plate; the cover plate is connected with the box body through at least two hand-screwed lead sealing bolts. The utility model discloses the effectual mutual-inductor electric field intensity of having solved more than traditional mutual-inductor 35KV is inhomogeneous, leads to the withstand voltage nonconforming of power frequency, the outside scintillation scheduling problem of mutual-inductor, has the significance to advantages such as mutual-inductor product security height, increase of service life.
Description
Technical Field
The utility model relates to a current, voltage transformer technical field specifically indicate a terminal box device for on medium and high voltage transformer.
Background
The current and voltage mutual inductor is used for converting current and voltage on a line, and the purpose of converting the current and the voltage of the current and voltage mutual inductor is mainly used for supplying power to a measuring instrument and a relay protection device, measuring the current, the voltage, the power and the electric energy of the line, or protecting valuable equipment, a motor and a transformer in the line when the line fails, wherein the current and voltage mutual inductor is one of main component materials in the whole switch cabinet and aims to realize three-phase voltage metering, measuring and electric protection.
Along with in put the cabinet, aerify the general application of cabinet in recent years, the improvement of voltage class, especially the mutual-inductor more than 35Kv, original traditional structure terminal box has certain limitation, and the terminal box of traditional structure rises along with voltage class, electric field strength, develops into the flashover along the face, and electrode and solid insulation contact position form the air gap easily, lead to local electric field strength to rise to reduce life, increase cost.
SUMMERY OF THE UTILITY MODEL
in order to overcome the defects of the prior art, the utility model aims to provide a shielded transformer junction box device.
In order to achieve the above object, the utility model adopts the following technical scheme: a shielding type mutual inductor junction box device comprises a box body, wherein one surface of the box body is connected with a mutual inductor, and a cover plate is arranged on the other surface of the box body; a first sealing gasket is arranged on the surface of the box body combined with the mutual inductor, and a second sealing gasket is arranged on the surface of the box body combined with the cover plate; the cover plate is connected with the box body through at least two hand-screwed lead sealing bolts.
Preferably, the box body and the cover plate are made of aluminum materials; the box body is provided with a grounding bolt for arranging a grounding wire.
Preferably, an extension plate is arranged at the end part of the surface of the box body combined with the cover plate, and the grounding bolt is arranged on the extension plate.
The beneficial technical effects are as follows: the utility model discloses the effectual mutual-inductor electric field intensity of having solved more than traditional mutual-inductor 35KV is inhomogeneous, leads to the withstand voltage nonconforming of power frequency, the outside scintillation scheduling problem of mutual-inductor, has the significance to advantages such as mutual-inductor product security height, increase of service life.
Drawings
Fig. 1 is a perspective view of the present invention;
Fig. 2 is a perspective view of the present invention;
Fig. 3 is a diagram of an embodiment of the present invention.
Detailed Description
In order to make the technical field better understand the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and embodiments.
As shown in fig. 1-3, a shielded transformer junction box device comprises a box body 1, wherein one surface of the box body is connected with a transformer 7, and a cover plate 2 is arranged on the other surface of the box body; a first sealing gasket 3 is arranged on the surface of the box body 1 combined with the mutual inductor, and a second sealing gasket 4 is arranged on the surface of the box body combined with the cover plate; the cover plate is connected with the box body through at least two hand-screwed lead sealing bolts 5.
The hand-screwed lead seal bolt 5 is formed by integrally forming a handle and a screw rod, and by adopting the bolt, the connection between the box body and the cover plate can be completed without tools.
The box body 1 and the cover plate 2 are made of aluminum materials; the box body 1 is provided with a grounding bolt 6 for setting a grounding wire.
In order to mount the earth bolt 6, an extension plate 101 is provided on the end portion of the surface of the case 1 to be coupled to the cover plate 2, and the earth bolt 6 is provided on the extension plate 101.
The junction box and the mutual inductor are integrally cast to form the junction box with the traditional structure, and because the casting process is limited, a casting body is difficult to avoid to have a small air gap, and is particularly obvious under high voltage, and the phenomena of power frequency voltage resistance and unqualified partial discharge parameters exist. The utility model discloses a terminal box device adopts the metal to make, forms a complete wait electric body, has the shielding effect, has the guard action to the secondary wiring, and better solution product finished product qualification rate problem has improved product property ability.
Although the present invention has been described in terms of embodiments, those skilled in the art will recognize that there are numerous variations and modifications of the present invention without departing from the spirit of the invention, and it is intended that the appended claims encompass such variations and modifications without departing from the spirit of the invention.
Claims (3)
1. A shielded mutual inductor junction box device is characterized by comprising a box body, wherein one surface of the box body is connected with a mutual inductor, and a cover plate is arranged on the other surface of the box body; a first sealing gasket is arranged on the surface of the box body combined with the mutual inductor, and a second sealing gasket is arranged on the surface of the box body combined with the cover plate; the cover plate is connected with the box body through at least two hand-screwed lead sealing bolts.
2. the shielded transformer junction box device of claim 1, wherein the box body and the cover plate are made of aluminum; the box body is provided with a grounding bolt for arranging a grounding wire.
3. The shielded transformer junction box assembly as recited in claim 2, wherein an extension plate is provided on an end portion of a surface of the box body, which is combined with the cover plate, and the grounding bolt is provided on the extension plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920960110.0U CN209785721U (en) | 2019-06-20 | 2019-06-20 | Shielding type mutual inductor junction box device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920960110.0U CN209785721U (en) | 2019-06-20 | 2019-06-20 | Shielding type mutual inductor junction box device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209785721U true CN209785721U (en) | 2019-12-13 |
Family
ID=68789047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920960110.0U Active CN209785721U (en) | 2019-06-20 | 2019-06-20 | Shielding type mutual inductor junction box device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209785721U (en) |
-
2019
- 2019-06-20 CN CN201920960110.0U patent/CN209785721U/en active Active
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