CN206921652U - Power transformer - Google Patents
Power transformer Download PDFInfo
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- CN206921652U CN206921652U CN201720637805.6U CN201720637805U CN206921652U CN 206921652 U CN206921652 U CN 206921652U CN 201720637805 U CN201720637805 U CN 201720637805U CN 206921652 U CN206921652 U CN 206921652U
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- winding
- tap
- power transformer
- pressure winding
- tertiary
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Abstract
A kind of power transformer is the utility model is related to, it is made up of an iron core, a low pressure winding, a high pressure winding, at least one tertiary winding and at least one tap-changing windings.The low pressure winding is set in the outside of the iron core.The high pressure winding is set in the outside of the low pressure winding.The tertiary winding is set in the outside of the high pressure winding.The tap-changing windings are set in the outside of the high pressure winding.Wherein, arranged in stratiform the axial direction of the tertiary winding and the tap-changing windings along the iron core, effectively reduce coil assembly difficulty, by keeping predetermined insulation distance to be able to ensure that electrical security, the power transformer realizes inlet wire by the middle part end of incoming cables of high pressure winding, electric high-voltage end can be ensured away from end construction part, therefore effectively reduce insulation risk, further increase the security feature of product.
Description
Technical field
Electrical equipment is the utility model is related to, more particularly, to a kind of power transformer.
Background technology
Power transformer is electric power transmission, the visual plant of power consumer distribution.In general, power transformer be by around
Two or more coil windings composition on same iron core, be between winding by alternating magnetic field and in connection with and by
Electromagnetic induction principle works, will with meet transmission of electricity and electricity consumption to transmit electric energy, voltage of transformation and electric current in power system
Ask.
Power plant is needed with two kinds of different voltages to when power system or customer power supply, or transformer station needs that what is connected
During the power system of different voltages, generally use three-winding transformer, three different windings are set on a core limb,
For the ease of insulation, high pressure winding is generally placed in outermost layer, low pressure winding is placed in innermost layer.
Now if the tertiary winding to be placed in the inner side of low pressure winding, then the tertiary winding and adjacent low pressure winding and high pressure
Impedance between winding is less than normal, and its short-circuit force being subject to can increase.Destruction caused by order to prevent short-circuit force possible, improves transformation
Device resists the level of short-circuit force, it is necessary to reduce the electric close of the tertiary winding, and by increasing between the tertiary winding and low pressure winding
Distance, come improve the tertiary winding tolerance short circuit ability.Finally, causing the materials of the device body of transformer increases so that former material
Expect that cost is higher, economy is deteriorated.
If the tertiary winding to be placed in the outside of high pressure winding, high voltage end inlet wire is used, then high voltage end field
Powerful, insulation risk is higher, and now tap-changing windings and the tertiary winding are generally laminar or helical winding, its stability
Poor, outlet is inconvenient.
Utility model content
The purpose of this utility model is to provide a kind of power transformer, and the stability of its coil is stronger, can not only carry
The anti-short circuit capability of the high tertiary winding, while can effectively reduce coil assembly difficulty.This power transformer by an iron core,
One low pressure winding, a high pressure winding, at least one tertiary winding and at least one tap-changing windings composition.The low pressure around
Group is set in the outside of the iron core.The high pressure winding is set in the outside of the low pressure winding.The tertiary winding is arranged
In the outside of the high pressure winding.The tap-changing windings are set in the outside of the high pressure winding.Wherein, the tertiary winding and
Axial direction of the tap-changing windings along the iron core is arranged in stratiform, effectively reduces coil assembly difficulty, by keeping predetermined
Insulation distance be able to ensure that electrical security, the power transformer realizes inlet wire by the middle part end of incoming cables of high pressure winding,
Electric high-voltage end can be ensured away from end construction part, therefore effectively reduce insulation risk, further increase the safety of product
Characteristic.
According to the one side of the utility model power transformer, the tap-changing windings use pie winding, so that it is tied
Structure stability is more preferable, and is easy to lead outlet.
According to the another aspect of the utility model power transformer, the tap-changing windings are entangled with formula line cake including a plurality of,
The lightning impulse tolerance of coil can be improved.
According to the another further aspect of the utility model power transformer, the tertiary winding uses pie winding, so that it is tied
Structure stability is more preferable, and is easy to lead outlet.
According to the another aspect of the utility model power transformer, the tertiary winding is entangled with formula line cake including a plurality of,
The lightning impulse tolerance of coil can be improved.
According to the another aspect of the utility model power transformer, including two tertiary windings and two tap-changing windings, institute
The centre position that two tap-changing windings are symmetrically disposed in the iron core axial direction is stated, to cause the middle part end of incoming cables from described two
Clearance for insulation between individual tap-changing windings passes, and described two tertiary windings are symmetrically disposed in described two tap-changing windings
Upper and lower side, by above-mentioned design, coil assembly difficulty can not only be effectively reduced, mounting coil man-hour is reduced, so as to carry
High efficiency, while can also the greatly overall stability of intensifier coil.
According to the another aspect of the utility model power transformer, in addition to first electrostatic ring, it is arranged in
The top of the tertiary winding of side, so as to play a part of homogenizing coil electric field.
According to the another aspect of the utility model power transformer, in addition to second electrostatic ring, it is arranged on described low
The top of winding is pressed, so as to play a part of homogenizing coil electric field.
It is in series or in parallel between described two tertiary windings according to the another aspect of the utility model power transformer.
It is in series or in parallel between described two tap-changing windings according to the another aspect of the utility model power transformer.
Brief description of the drawings
The utility model is described in detail with reference to the accompanying drawings and detailed description.Wherein：
Fig. 1 is the loop construction schematic diagram of the utility model power transformer；
Fig. 2 is the close-up schematic view of power transformer in Fig. 1, and it illustrates the arrangement of the tertiary winding and tap-changing windings
Mode.
Label declaration
The iron core C tertiary windings T1, T2
Low pressure winding L tap-changing windings T3, T4
End of incoming cables S in the middle part of high pressure winding H
First the second electrostatic rings of electrostatic ring E1 E2
Embodiment
In order to which the technical characteristic of utility model, purpose and effect are more clearly understood, now control illustrates this
The embodiment of utility model, in the various figures identical label represent identical part.Representing the attached of each embodiment
In figure, two digits represent that structure is identical or structure is similar but function identical part after identical.
To make simplified form, the part related to the utility model is only schematically show in each figure, they are not
Represent its practical structures as product.In addition, so that simplified form readily appreciates, there is identical structure or work(in some figures
The part of energy, only symbolically depicts one of those, or only marked one of those.
Herein, " on ", " under ", "front", "rear", "left", "right" etc. are only used for representing the position between relevant portion
Relation, and they non-limiting absolute position.
Herein, " first ", " second " etc. are only used for mutual differentiation, rather than represent their significance level and order
Deng.
Herein, the limitation in " parallel ", " vertical " etc. and non-critical mathematics and/or geometry meaning, is also included
It will be appreciated by those skilled in the art that and manufacture or the error for the permission such as using.
Such as Fig. 1, it illustrates the loop construction schematic diagram according to power transformer of the present utility model.It is new according to this practicality
One embodiment of type, power transformer is by an iron core C, a low pressure winding L, high pressure winding H, at least one
The individual tertiary winding and at least one tap-changing windings composition.In order to reach insulating requirements, low pressure winding L is set in iron core C's
Outside, and high pressure winding H is set in low pressure winding L outside, it can not only so save insulating materials, additionally it is possible to preferably
Meet the convenience of lead.
At least one tertiary winding of power transformer of the present utility model can be the tertiary winding T1, T2 in Fig. 1, at least
One tap-changing windings can be tap-changing windings T3, T4 in Fig. 1.In order to ensure that the balance of the tertiary winding is resistant to short-circuit capacity, with reference to
Shown in Fig. 1 and Fig. 2, specifically, at least one tertiary winding T1, T2 are accordingly set in high pressure winding H outside, similarly
At least one tap-changing windings T3, T4 are also accordingly set in high pressure winding H outside.
In the vertical direction, the axial direction of the tertiary winding T1, T2 and tap-changing windings T3, T4 along iron core C are arranged in stratiform.The
Predetermined insulation distance is kept between three winding T1, T2 and tap-changing windings T3, T4, to ensure its electrical security.By above-mentioned
Design, the tertiary winding of the present utility model and voltage regulation coil is external, just without additionally reducing the electric close of the tertiary winding, without volume
It is outer to increase the distance between the tertiary winding and low pressure winding, so as to effectively save material to reduce cost.
At the same time, although the tertiary winding of the present utility model and voltage regulation coil are by the way of external, due to this reality
With new power transformer not by the way of high voltage end inlet wire, but it is real by high pressure winding H middle part end of incoming cables S
Existing inlet wire, can ensure electric high-voltage end away from end construction part, therefore effectively reduce insulation risk, further increase product
Security feature.
In view of the structural stability of coil, and the convenience of lead outlet, as a kind of alternative embodiment, the 3rd around
Group T1, T2 use pie winding.Further, as shown in Fig. 2 as preferred embodiment, the tertiary winding T1, T2 include plural number
It is individual to be entangled with formula line cake.As a kind of alternative embodiment, tap-changing windings T3, T4 use pie winding.Further, such as Fig. 2 institutes
Preferred embodiment is shown as, tap-changing windings T3, T4 are entangled with formula line cake including a plurality of.Pass through above-mentioned design, additionally it is possible to effectively carry
The lightning impulse tolerance of high coil, ensure that the security reliability of coil.At the same time, due to the tertiary winding T1, T2 and
The axial direction coiling together of tap-changing windings T3, T4 along iron core, coil assembly difficulty can be effectively reduced, reduce mounting coil work
When, so as to improve production efficiency.
As a kind of embodiment, power transformer include two tertiary windings T1, T2 and two tap-changing windings T3,
T4.Two tap-changing windings T3, T4 are symmetrically disposed in the centre position of iron core C axial directions, to cause middle part end of incoming cables S from two tune
Clearance for insulation between pressure winding T3, T4 passes, and two tertiary windings T1, T2 are symmetrically disposed in two tap-changing windings T3, T4
Upper and lower side.
In order to play a part of homogenizing coil electric field, as a kind of preferred embodiment, power transformer also includes one
First electrostatic ring E1, it is arranged in the tertiary winding T1 of upside top.It is preferred that power transformer also includes one the
Two electrostatic ring E2, it is arranged on low pressure winding L top.
According to the demand of actual electricity consumption, as a kind of alternative embodiment, connected between two tertiary windings T1, T2, two
Connected between tap-changing windings T3, T4.It is understood that as second of alternative embodiment, between two tertiary windings T1, T2
Parallel connection, it is in parallel between two tap-changing windings T3, T4.Or as the third alternative embodiment, two tertiary windings T1, T2 it
Between it is in parallel, connected between two tap-changing windings T3, T4.As the 4th kind of alternative embodiment, gone here and there between two tertiary windings T1, T2
Connection, it is in parallel between two tap-changing windings T3, T4.
It should be pointed out that power transformer of the present utility model can be two-winding transformer either three winding transformation
Device.According to power transformer of the present utility model, it can not only preferably ensure the overall stability of coil so that the tertiary winding
Anti-short circuit capability it is higher, while also cause coil assembly difficulty reduce, mounting coil man-hour reduce, significantly improve production
Efficiency.
Herein, " schematic " expression " serving as example, example or explanation ", will should not be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to a kind of preferred or more advantageous technical scheme.
It should be appreciated that although this specification is described according to each embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical scheme in each embodiment may also be suitably combined to form people in the art
The other embodiment that member is appreciated that.
The a series of tool described in detail only for feasibility embodiment of the present utility model of those listed above
Body illustrates that they are simultaneously not used to limit the scope of protection of the utility model, all to be made without departing from the utility model skill spirit
Equivalent implementations or change should be included within the scope of protection of the utility model.
Claims (10)
1. power transformer, it is characterised in that its by an iron core (C), a low pressure winding (L), a high pressure winding (H),
At least one tertiary winding (T1, T2) and at least one tap-changing windings (T3, T4) composition, wherein the low pressure winding (L) covers
It is located at the iron core (C) outside；The high pressure winding (H) is set in the low pressure winding (L) outside；The tertiary winding
(T1, T2) is set in the outside of the high pressure winding (H)；The tap-changing windings (T3, T4) are set in the high pressure winding (H)
Outside；
Wherein, the axial direction of the tertiary winding (T1, T2) and the tap-changing windings (T3, T4) along the iron core (C) is in stratiform
Arrangement, and keep predetermined insulation distance；The power transformer by the middle part end of incoming cables (S) of high pressure winding (H) realize into
Line.
2. power transformer as claimed in claim 1, it is characterised in that the tap-changing windings (T3, T4) use pie winding.
3. power transformer as claimed in claim 2, it is characterised in that the tap-changing windings (T3, T4) include a plurality of entangle
Eliminant line cake.
4. power transformer as claimed in claim 1, it is characterised in that the tertiary winding (T1, T2) uses pie winding.
5. power transformer as claimed in claim 4, it is characterised in that the tertiary winding (T1, T2) includes a plurality of entangle
Eliminant line cake.
6. such as the power transformer any one of claim 1-5, it is characterised in that including two tertiary windings (T1,
T2) and two tap-changing windings (T3, T4), described two tap-changing windings (T3, T4) are symmetrically disposed in the iron core (C) axial direction
Centre position, to cause the middle part end of incoming cables (S) to be passed from the clearance for insulation between described two tap-changing windings (T3, T4),
Described two tertiary windings (T1, T2) are symmetrically disposed in the upper and lower side of described two tap-changing windings (T3, T4).
7. power transformer as claimed in claim 1, it is characterised in that also including first electrostatic ring (E1), it is set
At the top of the tertiary winding (T1) positioned at upside.
8. power transformer as claimed in claim 1, it is characterised in that also including second electrostatic ring (E2), it is set
At the low pressure winding (L) top.
9. power transformer as claimed in claim 6, it is characterised in that connected between described two tertiary windings (T1, T2)
It is or in parallel.
10. power transformer as claimed in claim 6, it is characterised in that connected between described two tap-changing windings (T3, T4)
It is or in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720637805.6U CN206921652U (en) | 2017-06-02 | 2017-06-02 | Power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720637805.6U CN206921652U (en) | 2017-06-02 | 2017-06-02 | Power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206921652U true CN206921652U (en) | 2018-01-23 |
Family
ID=61314452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720637805.6U Expired - Fee Related CN206921652U (en) | 2017-06-02 | 2017-06-02 | Power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206921652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112992502A (en) * | 2021-03-22 | 2021-06-18 | 保定天威保变电气股份有限公司 | Novel 220kV high-capacity split on-load voltage regulation marine step-up transformer |
-
2017
- 2017-06-02 CN CN201720637805.6U patent/CN206921652U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112992502A (en) * | 2021-03-22 | 2021-06-18 | 保定天威保变电气股份有限公司 | Novel 220kV high-capacity split on-load voltage regulation marine step-up transformer |
| CN112992502B (en) * | 2021-03-22 | 2022-08-12 | 保定天威保变电气股份有限公司 | 220kV high-capacity split on-load voltage regulation marine step-up transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 |