CN207474218U - A kind of high overload oil-immersed transformer - Google Patents
A kind of high overload oil-immersed transformer Download PDFInfo
- Publication number
- CN207474218U CN207474218U CN201721441392.0U CN201721441392U CN207474218U CN 207474218 U CN207474218 U CN 207474218U CN 201721441392 U CN201721441392 U CN 201721441392U CN 207474218 U CN207474218 U CN 207474218U
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- oil
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- transformer
- immersed transformer
- tank envelope
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Abstract
The utility model discloses a kind of high overload oil-immersed transformer, including tank envelope, high-tension coil, low-voltage coil, iron core；The tank envelope is the rectangular box being welded by steel plate, and the iron core is made of the different stem in section with iron yoke, and the section of the stem is kidney-shaped, the stepped rectangle in section of the iron yoke；The layer insulation backing plate of the high-tension coil and low-voltage coil is made of stay curtain and corrugated board, and what is be also spaced on the layer insulation backing plate offers axial oil duct.A kind of high overload oil-immersed transformer described in the utility model, can both reduce conducting wire dosage on the basis of silicon steel sheet dosage is not increased, so as to reduce the heat of conducting wire generation.In addition using the layer insulation backing plate of compartment every layer conductor with transformer oil can be contacted, increases radiating surface and radiating efficiency, reduce the Wen Sheng of line packet hottest point, delayed insulation ag(e)ing, extend the service life of transformer.
Description
Technical field
The utility model is related to transformer device structure technical field, more particularly to a kind of high overload oil-immersed transformer.
Background technology
High overload distribution transformer technology, the skill mainly researched and developed for the economy for ensuring rural power grids operation and safety
Art.Rural power grids annual load factor is relatively low, but the power load period concentrates, and load sharp increase during the Spring Festival be easy to cause routine
Transformer heavy overload or even is burnt in short-term.The heat that transformer is generated often caused by its inside is excessively high and can not arrange in time
Its load capacity is limited except the heat of generation.But if artificially increasing transformer capacity, " low load with strong power " phenomenon is caused, is not inconsistent
Close operation of power networks economy.Therefore how not only not had to increase transformer capacity but also unlikely temperature is excessively high in top load burns transformation
Device.
Utility model content
The purpose of this utility model is in view of the above-mentioned problems, a kind of high overload oil-immersed transformer is provided, from reduction heat
It generates and dissipates two aspect of heat in time to improve transformer load capacity in short-term.
To achieve the above object, the method for the utility model use is：A kind of high overload oil-immersed transformer, including fuel tank
Shell, high-tension coil, low-voltage coil, iron core；The tank envelope is the rectangular box being welded by steel plate, the iron core
It is made of the different stem in section with iron yoke, the section of the stem is kidney-shaped, the stepped rectangle in section of the iron yoke；
The layer insulation backing plate of the high-tension coil and low-voltage coil is made of stay curtain and corrugated board, on the layer insulation backing plate
What is be also spaced offers axial oil duct.
As a kind of improvement of the utility model, four wall steel plates of the tank envelope are corrugated.
As a kind of improvement of the utility model, four wall steel plates of the tank envelope are cold rolled quality steel sheet.
As a kind of improvement of the utility model, the tank envelope is additionally provided with pressure relief valve and thermometer.
Advantageous effect：
A kind of high overload oil-immersed transformer described in the utility model, no longer using the identical stem in section and iron yoke
It is using small bore stem and special-shaped iron yoke under the premise of the two overlapping area is not changed, you can not increasing silicon steel sheet dosage
On the basis of both reduced conducting wire dosage, so as to reduce conducting wire generation heat.In addition the layer insulation backing plate of compartment is used
So that can be contacted per layer conductor with transformer oil, increase radiating surface and radiating efficiency, reduce the Wen Sheng of line packet hottest point, prolong
Delay insulation ag(e)ing, extend the service life of transformer.High and low pressure end turn encloses gapless support construction using hard end,
Enhance the anti-short circuit capability of transformer.
Description of the drawings
Fig. 1 is the outside schematic diagram of the utility model；
Fig. 2 is the Special-shaped iron core structure diagram of the utility model；
Fig. 3 is sectional views of the Fig. 2 in A-A directions；
Fig. 4 is sectional views of the Fig. 2 in B-B directions；
Fig. 5 is the end view of the utility model coil.
Each component is in figure：
1- tank envelopes, 2- iron cores, 3- stems, 4- iron yokes, 5- layer insulation backing plates, 6- stay curtains, 7- corrugated boards, 8-
Axial oil duct, 9- pressure relief valves, 10- thermometers.
Specific embodiment
The utility model is further described with reference to embodiment and with reference to attached drawing, it should be understood that following specific embodiment parties
Formula is merely to illustrate the utility model rather than limitation the scope of the utility model.It should be noted that make in being described below
Word "front", "rear", "left", "right", "up" and "down" refer to the direction in width figure, and word " interior " and " outer " respectively refer to
Be directed towards or the direction far from particular elements geometric centers.
Such as a kind of Fig. 1 high overload oil-immersed transformers described in the utility model, including tank envelope, high-tension coil, low pressure
Coil, iron core；The tank envelope 1 is the rectangular box being welded by steel plate, and the iron core 2 is by the different stem in section
3 form with iron yoke 4, and the section of the stem 3 is kidney-shaped, the stepped rectangle in section of the iron yoke 4；The high-tension coil
It is made of stay curtain 6 and corrugated board 7 with the layer insulation backing plate 5 of low-voltage coil, is also spaced on the layer insulation backing plate 5
Offer axial oil duct 8.
As a kind of embodiment of the utility model, four wall steel plates of the tank envelope 1 are corrugated.Due to four wall pressures
After ripple is made, surface area greatly increases, and is contacted fully with the transformer oil of external air and inside, can in time by
Heat transfer plays the role of heat dissipation to outside, and in addition corrugated siding has certain elasticity, when can be with tank internal pressure increase
Peng is swollen, when pressure returns to it is normal when can be restored to normality again, therefore, for compensator transformer oil volume variation oil conservater can
To cancel, this characteristic is the important guarantee that distribution transformer realizes all-sealed structure.
As a kind of embodiment of the utility model, in order to as early as possible distribute the heat in oil tank of transformer, institute
The four wall steel plates for stating tank envelope 1 are cold rolled quality steel sheet.
As a kind of embodiment of the utility model, the tank envelope 1 is additionally provided with pressure relief valve 9 and thermometer
10.Pressure relief valve can play a protective role when pressure is excessive in fuel tank,
A kind of high overload oil-immersed transformer provided by the utility model, no longer using the identical stem in section and iron yoke
It is using small bore stem and special-shaped iron yoke under the premise of the two overlapping area is not changed, you can not increasing silicon steel sheet dosage
On the basis of both reduced conducting wire dosage, so as to reduce conducting wire generation heat.In addition the layer insulation backing plate of compartment is used
So that can be contacted per layer conductor with transformer oil, increase radiating surface and radiating efficiency, reduce the Wen Sheng of line packet hottest point, prolong
Delay insulation ag(e)ing, extend the service life of transformer.High and low pressure end turn encloses gapless support construction using hard end,
Enhance the anti-short circuit capability of transformer.
The above descriptions are merely preferred embodiments of the present invention, is not to make any other to the utility model
The limitation of form, and any modification made according to the technical essence of the utility model or equivalent variations, it is new to still fall within this practicality
Type range claimed.
Claims (4)
1. a kind of high overload oil-immersed transformer, it is characterised in that：Including tank envelope, high-tension coil, low-voltage coil, iron core；
The tank envelope is the rectangular box being welded by steel plate, and the iron core is made of the different stem in section with iron yoke,
The section of the stem be kidney-shaped, the stepped rectangle in section of the iron yoke；The layer of the high-tension coil and low-voltage coil
Between insulating pad be made of stay curtain and corrugated board, what is be also spaced on the layer insulation backing plate offers axial oil duct.
2. a kind of high overload oil-immersed transformer according to claim 1, it is characterised in that：Four walls of the tank envelope
Steel plate is corrugated.
3. a kind of high overload oil-immersed transformer according to claim 2, it is characterised in that：Four walls of the tank envelope
Steel plate is cold rolled quality steel sheet.
4. a kind of high overload oil-immersed transformer according to claim 3, it is characterised in that：The tank envelope is also set up
There are pressure relief valve and thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721441392.0U CN207474218U (en) | 2017-11-02 | 2017-11-02 | A kind of high overload oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721441392.0U CN207474218U (en) | 2017-11-02 | 2017-11-02 | A kind of high overload oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207474218U true CN207474218U (en) | 2018-06-08 |
Family
ID=62262503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721441392.0U Active CN207474218U (en) | 2017-11-02 | 2017-11-02 | A kind of high overload oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207474218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749338A (en) * | 2017-11-02 | 2018-03-02 | 江苏中天伯乐达变压器有限公司 | A kind of high overload oil-filled transformer |
-
2017
- 2017-11-02 CN CN201721441392.0U patent/CN207474218U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749338A (en) * | 2017-11-02 | 2018-03-02 | 江苏中天伯乐达变压器有限公司 | A kind of high overload oil-filled transformer |
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