CN207938446U - One kind is dry to become high pressure corner connection cable architecture - Google Patents
One kind is dry to become high pressure corner connection cable architecture Download PDFInfo
- Publication number
- CN207938446U CN207938446U CN201820132692.9U CN201820132692U CN207938446U CN 207938446 U CN207938446 U CN 207938446U CN 201820132692 U CN201820132692 U CN 201820132692U CN 207938446 U CN207938446 U CN 207938446U
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- Prior art keywords
- corner connection
- coil
- high pressure
- tension
- connection line
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Abstract
The utility model discloses the dry change high pressure corner connection cable architectures of one kind, it is set between three coil groups being made of external high-tension coil and built-in low-voltage coil of triangle disposition arrangement, corner connection line between adjacent high-tension coil is to the direction curved arrangement close to the line of centres, and integrally cast is fixed for three high-tension coils and three corner connection lines.Three high-tension coil cast are together, lead between phase and phase is poured into a mould after connecting together with coil body, lead is connected in coil inside, since the dielectric constant of resin is far longer than the dielectric constant of air, therefore insulation distance can be substantially reduced, to be not take up coil outer space, reduce the appearance and size of transformer, saves floor space；Not affected by environment since high-voltage connection is in the state of resin-blocked, partial discharge is stablized, and there is no be bolted loosening problem.
Description
Technical field
The utility model is related to a kind of high-tension transformers, more particularly to a kind of dry change high pressure corner connection cable architecture.
Background technology
Currently, as shown in Figure 1 and Figure 2, three-dimensional dry-type three-phase transformer is all made of the single-phase independent cast of high-tension coil 13, low
Crimping circle 12 is not poured into a mould, and triangle solid iron core 11 is main framework, and high pressure corner connection line 15 connects in coil outer copper bar or copper pipe
It connects.The shortcomings that structure that this high-voltage connection (high pressure corner connection line) is drawn on the outside of coil, is：First, due to needing reserved draw
Line (high pressure corner connection line) is to high-tension coil 13 and lead to the distance for drawing screw rod, therefore transformer monnolithic case is big, floor space
Greatly；Second, lead is connected from coil outer with copper nut, and junction is easy to loosen after longtime running, causes hot-spot, finally
Lead to transformer short-circuit.
Invention content
In view of the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide one kind can reducing transformation body
The dry change high pressure corner connection cable architecture accumulated and connection is avoided to loosen short circuit.
In order to solve the above-mentioned technical problem, technical solution used by the utility model is：One kind is dry to become high pressure corner connection line
Structure, be set to triangle disposition arrangement three coil groups being made of external high-tension coil and built-in low-voltage coil it
Between, corner connection line between adjacent high-tension coil is to the direction curved arrangement close to the line of centres, three high-tension coils and three angles
Integrally cast is fixed for wiring.
As a kind of improvement of the dry technical solution for becoming high pressure corner connection cable architecture of the utility model, the corner connection line and high pressure
Coil is connected at the medial surface between two high-tension coils vis-a-vis, and the tie point distance of each high-tension coil and corner connection line becomes
The distance at depressor center is less than hub of a spool at a distance from transformer center.
As a kind of improvement of the dry technical solution for becoming high pressure corner connection cable architecture of the utility model, each high-tension coil and angle
The central angle bypassed between two tie points of wiring is not more than 120 °.
As a kind of improvement of the dry technical solution for becoming high pressure corner connection cable architecture of the utility model, the corner connection line is naked
Line.
As a kind of improvement of the dry technical solution for becoming high pressure corner connection cable architecture of the utility model, the corner connection line and high pressure
Coil is welded and fixed.
As a kind of improvement of the dry technical solution for becoming high pressure corner connection cable architecture of the utility model, the corner connection line and high pressure
Coil is fixed and is closed by resin-cast covering body.
The beneficial effects of the utility model are：Together, lead between phase and phase connects for three high-tension coil cast
It is poured into a mould together with coil body after good, lead is connected in coil inside, since the dielectric constant of resin is far longer than Jie of air
Electric constant, therefore insulation distance can be substantially reduced, to be not take up coil outer space, reduce the appearance and size of transformer,
Save floor space；Not affected by environment since high-voltage connection is in the state of resin-blocked, partial discharge is stablized, and bolt is not present
Connect loosening problem.
Description of the drawings
Fig. 1 is the dry forward structure schematic diagram become of existing triangle solid.
Fig. 2 is the dry planar structure schematic diagram become of existing triangle solid.
Fig. 3 is the dry forward structure schematic diagram become of solid where the utility model.
Fig. 4 is the dry planar structure schematic diagram become of solid where the utility model.
Specific implementation mode
Further illustrate specific embodiment of the present utility model below in conjunction with the accompanying drawings.
As shown in Figure 3, Figure 4, the utility model one kind is dry becomes high pressure corner connection cable architecture, is set to the three of triangle disposition arrangement
Between a coil group being made of external high-tension coil 23 and built-in low-voltage coil 22, the angle between adjacent high-tension coil 23
Wiring 25 is fixed to the direction curved arrangement close to the line of centres, three high-tension coils 23 and three 25 one cast of corner connection line,
Then it refills upper iron core 21 and constitutes the dry change of triangle solid.Three high-tension coils 23 are poured into a mould together, lead (angle between phase and phase
Wiring) connect after poured into a mould together with coil body, lead coil inside connect, due to pour into a mould generally using resin composition pour
The dielectric constant of injection body 28, resin is far longer than the dielectric constant of air, therefore can substantially reduce insulation distance, to not account for
With coil outer space, reduce the appearance and size of transformer, saves floor space；Since high-voltage connection is in resin-blocked state
Under, not affected by environment, partial discharge is stablized, and there is no be bolted loosening problem.
More preferably, the corner connection line 25 and high-tension coil 23 are connected to the medial surface between two high-tension coils 23 vis-a-vis
Distance of the tie point of place, each high-tension coil 23 and corner connection line 25 apart from transformer center is less than in hub of a spool and transformer
The distance of the heart makes corner connection line 25 prevent take up exterior space closer to inside, and pour mass closer to center and
Reduce castable.Can also slightly convex cast projection be set in the height and position of setting corner connection line, remaining position is inwardly indented.Angle
The practical tie point of wiring 25 and high-tension coil 23 may be in the side other positions of coil, and the tie point should be managed here
The position that solution contacts for corner connection line with high-tension coil, or perhaps the position that high-tension coil lead is detached with high-tension coil 23 are
One importing position, is not necessarily physical connection positions, but extending direction changes and generates the position of new construction.
More preferably, the central angle bypassed between each high-tension coil 23 and two tie points of corner connection line is not more than
120 °, purpose also for making corner connection line 25 prevent take up exterior space closer to inside, and pour mass 28 closer to
Center and reduce castable.
More preferably, the corner connection line 25 is bare wire, therefore corner connection line 25 is not required to set insulating sheath, is more energy-saving and environmentally friendly.
More preferably, in the closed structure of resin-cast, the corner connection line 25 is welded and fixed with high-tension coil 23, makes its connection
Structure is more solid and reliable, and just welded before cast, and welding position cast, which is coated and fixed, is further ensured that connection
Fastness avoids bolted loosening problem.
More preferably, the corner connection line 25 and high-tension coil 23 are fixed and are closed by resin-cast covering body, that is, pour mass 28,
It is further ensured that the safety and stability of transformer unit operation, improves the stability that corner connection line 25 and high-tension coil 23 connect
And reliability.
It above disclosure is merely preferred embodiments of the utility model, certainly cannot be new to limit this practicality with this
The interest field of type, therefore equivalent variations made according to the patent scope of the utility model still belong to the utility model and are covered
Range.
Claims (6)
1. one kind is dry to become high pressure corner connection cable architecture, it is characterised in that：Three that triangle disposition is arranged are set to by external high pressure
Between coil and the coil group of built-in low-voltage coil composition, the corner connection line between adjacent high-tension coil is to close to the line of centres
Integrally cast is fixed for direction curved arrangement, three high-tension coils and three corner connection lines.
2. dry change high pressure corner connection cable architecture according to claim 1, it is characterised in that：The corner connection line connects with high-tension coil
It is connected at the medial surface between two high-tension coils vis-a-vis, the tie point of each high-tension coil and corner connection line is in transformer
The distance of the heart is less than hub of a spool at a distance from transformer center.
3. dry change high pressure corner connection cable architecture according to claim 1, it is characterised in that：Each high-tension coil and corner connection line
The central angle bypassed between two tie points is not more than 120 °.
4. dry change high pressure corner connection cable architecture according to claim 1 or 2 or 3, it is characterised in that：The corner connection line is naked
Line.
5. dry change high pressure corner connection cable architecture according to claim 4, it is characterised in that：The corner connection line and high-voltage line lap welding
Connect fixation.
6. dry change high pressure corner connection cable architecture according to claim 1, it is characterised in that：The corner connection line and high-tension coil by
Resin-cast covering body is fixed and is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820132692.9U CN207938446U (en) | 2018-01-25 | 2018-01-25 | One kind is dry to become high pressure corner connection cable architecture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820132692.9U CN207938446U (en) | 2018-01-25 | 2018-01-25 | One kind is dry to become high pressure corner connection cable architecture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207938446U true CN207938446U (en) | 2018-10-02 |
Family
ID=63650226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820132692.9U Active CN207938446U (en) | 2018-01-25 | 2018-01-25 | One kind is dry to become high pressure corner connection cable architecture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207938446U (en) |
-
2018
- 2018-01-25 CN CN201820132692.9U patent/CN207938446U/en active Active
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