CN206148257U - Built -in current -limiting fuses's power transformer - Google Patents
Built -in current -limiting fuses's power transformer Download PDFInfo
- Publication number
- CN206148257U CN206148257U CN201621197787.6U CN201621197787U CN206148257U CN 206148257 U CN206148257 U CN 206148257U CN 201621197787 U CN201621197787 U CN 201621197787U CN 206148257 U CN206148257 U CN 206148257U
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- Prior art keywords
- limiting fuse
- built
- insulation crust
- taper
- insulating
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Abstract
The utility model discloses a built -in current -limiting fuses's power transformer, including transformer ware body and the insulating casing of setting outside the ware body, 3 sides on the last edge of insulating casing are equipped with the mounting flange who stretches out insulating casing, being equipped with two at insulating casing's top and stretching out with equidistant conical sleeve, the lower part of every conical sleeve all is equipped with an insulating sleeve, and the inside of every conical sleeve all is equipped with the cavity of cylinder shape, and the bottom of cavity is equipped with the terminal one time, and a terminal facial make -up is equipped with the helical spring, and current -limiting fuses is installed on the upper portion of helical spring, upper surface and two conical sleeve surfaces of insulating casing are provided with insulating protective layer. When the fixed locking back of mounting flange, the insulating protective layer of setting is fully filling in the interior inner chamber of insulator and insulating housing's the upper surface of boring, can reach the mesh of complete sealed insulation to prevent effectively that dust, spot from getting into wherein.
Description
Technical field
This utility model belongs to transformer technology field, and in particular to a kind of mains transformer of built-in limiting fuse.
Background technology
According to the requirement of state's net company power distribution net switchgear development, " matched somebody with somebody by what Electric Power Research Institute accepted within 2015
In electric switch one or two integration technology researchs of intellectuality ", " design of on-pole switch and ring main unit ", the outdoor column have been related generally to
Upper switch is new solid insulation structure, and its internal line bilateral is both needed to install a kind of power supply of built-in limiting fuse
Transformator, drives operating mechanism normal work with this.
At present, the mains transformer of operating mechanism normal work is driven in main flow outdoor pole top switch, usual volume is larger,
Independently installed, installation dispersion is complicated, and mostly installed in the hull outside of outdoor pole top switch, its high tension terminal is unlimited
Formula, the structure cause easily to intake at secondary connection post, and the easily immersion of dust and spot or accumulation are thereon, therefore are subject to nature ring
The destruction in border, so as to cause insulating properties to be decreased obviously.
The content of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of quick and easy for installation and can be hermetically sealed in Novel pole
The mains transformer of the built-in limiting fuse of upper switch internal.
To achieve these goals, the technical solution adopted in the utility model is：A kind of power supply of built-in limiting fuse
Transformator, including transformer body and the insulation crust being arranged on outside device body, wherein transformer body include iron core, secondary line
Circle, primary winding, the bottom of insulation crust are provided with two ground terminals, and ground terminal is the connection bolt for being provided with screw,
The side of insulation shell is provided with secondary terminals, and secondary terminals are the terminal screw for being provided with screw, it is characterised in that：The insulation
On shell, 3 sides on edge are provided with the mounting flange for stretching out insulation crust, and mounting flange is provided with multiple installing holes；It is outer in insulation
It is provided with two to stretch out with equidistant taper at the top of shell, the bottom of each taper is equipped with an insulating sleeve,
The inside of each taper is equipped with the cavity of cylindrical shape, and the bottom of cavity is provided with a terminal, installs on a terminal
There is helical spring, the top installing limiting fuse of helical spring, limiting fuse protrude from the top of taper；Institute
The upper surface and two taper outer surfaces for stating insulation crust is provided with insulating protective layer.
Used as a preferred version, the insulation crust is square.
As a preferred version, through hole inserts in the installing hole, is mounted on, through hole inserts is upper and lower in installing hole
It is symmetrical arranged, and protrudes from mounting flange surface, the rigid fixation when design can prevent final assembly causes insulation shell to break
Split.
Used as a preferred version, the height of the cavity is 210mm.
Used as a preferred version, it is 15mm, i.e. current limliting that the limiting fuse protrudes from the distance at the top of taper
The elastic telescopic ratio of fuse is 15 mm.During final assembly, it is exhausted with inner cone that the design is more conducive to limiting fuse during whole machine installation
The internal copper bar of edge is fully contacted；When limiting fuse breaks down, the design can be easily removed the limit that there is failure
Flow fuse.
Used as a preferred version, the insulating protective layer is made of using silicone rubber.
Compared with prior art, the beneficial effects of the utility model are：Arranged by 3 sides on the edge on insulation crust
The mounting flange of insulation crust is stretched out, and terminal is set in the bottom of two taper internal cavities, in a terminal
It is upper that limiting fuse is installed by helical spring, the easy for installation, quick of mains transformer can be made, the replacing of fuse is made more
Plus it is convenient.When whole machine installation in place after, in taper outer face brushing silicone grease, taper can be allowed to be naturally inserted into open air
In the inner cone insulator of on-pole switch, limiting fuse is withstood on the copper bar of inner cone interior insulator naturally.When mounting flange is consolidated
After lock is tight, the insulating protective layer of setting is filled up completely with the upper surface of inner chamber and insulation shell in inner cone insulator, can reach
The purpose of insulation is fully sealed, so as to effectively prevent dust, spot from entering wherein.Additionally, taper bottom arranges insulation sleeve
Cylinder, it can be ensured that limiting fuse keeps enough insulation distances with extraneous air.Also, mounting flange and cone in this utility model
The design of shape sleeve pipe is more beneficial for the dismounting of mains transformer, that is, remove four fastening bolts on mounting flange, taper
Then smoothly can take out including main body.
Description of the drawings
Fig. 1 is 3 d effect graph of the present utility model
Fig. 2 faces partial sectional view for Fig. 1's
Fig. 3 is the front view of Fig. 2 bottoms
I portion enlarged drawings of the Fig. 4 for Fig. 2
In figure：1st, insulation crust, 2, ground terminal, 3, secondary terminals, 4, mounting flange, 4.1, installing hole, 4.2, abnormity
Inserts, 5, taper, 5.1, cavity, 5.2, terminal, 5.3, spring, 5.4, fuse, 6, insulating protective layer, 7, transformation
Device device body, 8, insulating sleeve.
Specific embodiment
In conjunction with accompanying drawing, the technology contents in this utility model are further described.
As Figure 1-4, the mains transformer of built-in limiting fuse, including transformer body 7 and it is arranged on transformator
Insulation crust 1 outside device body 7, wherein transformer body 7 include iron core, secondary coil, primary winding.The bottom of insulation crust 1
Two ground terminals 2 are provided with, ground terminal 2 is the connection bolt for being provided with screw.The side of insulation shell 1 is provided with secondary
Terminal 3, secondary terminals 3 are the terminal screw for being provided with screw.
The insulation crust 1 is square, and on insulation crust 1,3 sides on edge are provided with the mounting flange for stretching out insulation crust 1
4, mounting flange 4 is provided with 5 installing holes 4.1, is mounted on through hole inserts 4.2, through hole inserts 4.2 in each installing hole 4.1
The setting symmetrical above and below in the installing hole 4.1, and protrude from 4 surface of mounting flange.Two are provided with the top of insulation crust 1 to stretch out
With equidistant taper 5, the bottom of each taper 5 is equipped with an insulating sleeve 8, each taper 5 it is interior
Portion is equipped with cavity 5.1 of the height for the cylindrical shape of 210mm.The bottom of cavity 5.1 is provided with a terminal 5.2, a terminal
Helical spring 5.3 is equiped with 5.2, the top installing limiting fuse 5.4 of helical spring 5.3, limiting fuse 5.4 are convex
It is 15mm for the distance at the top of taper 5.The outer surface of the upper surface of the insulation crust 1 and two tapers 5 sets
It is equipped with using insulating protective layer 6 made by silicone rubber.
Whole machine installation in place after, the taper 5 of mains transformer is fixed on the inner cone of outdoor pole top switch naturally
In insulator, and limiting fuse 5.4 is then withstood on the copper bar of inner cone interior insulator.After mounting flange 4 is fixed locks, if
The insulating protective layer 6 put is filled up completely with the upper surface of inner chamber and insulation crust 1 in inner cone insulator, reaches and fully seals insulation
Purpose, effectively prevent dust, spot enter wherein.
Claims (6)
1. a kind of mains transformer of built-in limiting fuse, including transformer body and the insulation crust being arranged on outside device body,
Wherein transformer body includes iron core, secondary coil, primary winding, and the bottom of insulation crust is provided with two ground terminals, connects
Ground terminal is the connection bolt for being provided with screw, and the side of insulation shell is provided with secondary terminals, and secondary terminals are to be provided with screw
Terminal screw, it is characterised in that：On the insulation crust, 3 sides on edge are provided with the mounting flange for stretching out insulation crust, peace
Dress flange is provided with multiple installing holes；Two are provided with the top of insulation crust to stretch out with equidistant taper, each cone
The bottom of shape sleeve pipe is equipped with an insulating sleeve, and the inside of each taper is equipped with the cavity of cylindrical shape, cavity
Bottom is provided with a terminal, and helical spring, the top installing limiting fuse of helical spring, limit are equiped with a terminal
Flow fuse protrudes from the top of taper；The upper surface of the insulation crust and two taper outer surfaces are provided with absolutely
Edge overcoat.
2. the mains transformer of built-in limiting fuse as claimed in claim 1, it is characterised in that：The insulation crust is side
Shape.
3. the mains transformer of built-in limiting fuse as claimed in claim 1 or 2, it is characterised in that：In the installing hole
Through hole inserts, the setting symmetrical above and below in installing hole of through hole inserts are mounted on, and protrude from mounting flange surface.
4. the mains transformer of built-in limiting fuse as claimed in claim 3, it is characterised in that：The height of the cavity is
210mm。
5. the mains transformer of built-in limiting fuse as claimed in claim 3, it is characterised in that：The limiting fuse is convex
It is 15 mm for the elastic telescopic ratio that the distance at the top of taper is 15mm, i.e. limiting fuse.
6. the mains transformer of built-in limiting fuse as claimed in claim 3, it is characterised in that：The insulating protective layer is
Made using silicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621197787.6U CN206148257U (en) | 2016-11-07 | 2016-11-07 | Built -in current -limiting fuses's power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621197787.6U CN206148257U (en) | 2016-11-07 | 2016-11-07 | Built -in current -limiting fuses's power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206148257U true CN206148257U (en) | 2017-05-03 |
Family
ID=58625918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621197787.6U Active CN206148257U (en) | 2016-11-07 | 2016-11-07 | Built -in current -limiting fuses's power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206148257U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298204A (en) * | 2016-11-07 | 2017-01-04 | 湖南大北互互感器有限公司 | A kind of mains transformer of built-in limiting fuse |
| US11515080B2 (en) * | 2017-01-25 | 2022-11-29 | Delta Electronics (Shanghai) Co., Ltd | Transformer, coil unit and electronic power apparatus |
-
2016
- 2016-11-07 CN CN201621197787.6U patent/CN206148257U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298204A (en) * | 2016-11-07 | 2017-01-04 | 湖南大北互互感器有限公司 | A kind of mains transformer of built-in limiting fuse |
| US11515080B2 (en) * | 2017-01-25 | 2022-11-29 | Delta Electronics (Shanghai) Co., Ltd | Transformer, coil unit and electronic power apparatus |
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