CN214541873U - Structure of built-in reactor of high-impedance transformer - Google Patents
Structure of built-in reactor of high-impedance transformer Download PDFInfo
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- CN214541873U CN214541873U CN202120654847.7U CN202120654847U CN214541873U CN 214541873 U CN214541873 U CN 214541873U CN 202120654847 U CN202120654847 U CN 202120654847U CN 214541873 U CN214541873 U CN 214541873U
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Abstract
The utility model relates to a structure of built-in reactor of high impedance transformer, affiliated transformer technical field, including a plurality of windings that are equidistant annular distribution, winding upper end be equipped with copper line bent, copper line bent and winding between be equipped with the linking bridge, the winding lower extreme be equipped with the frame stay tube, frame stay tube and winding between, linking bridge and the winding all be equipped with the magnetic screen, magnetic screen and frame stay tube between be equipped with a plurality of support columns, all be equipped with cooling blower between two adjacent support columns, cooling blower and frame stay tube between all be equipped with the installing support. The device has the characteristics of simple structure, good operation stability and long service life. The short-circuit bearing capacity of the transformer is effectively improved, the insulation reliability is improved, and the possibility of magnetic leakage and local overheating is reduced.
Description
Technical Field
The utility model relates to a transformer technical field, concretely relates to high impedance transformer embeds structure of reactor.
Background
With the increasing popularization of the approaching of the transformer substation to the load center in recent years, the pace of the large-scale high-voltage transformer substation entering the center of a large city is increased, and correspondingly higher requirements are put forward on the operation reliability of the transformer. The related information shows that the accident rate of the damage of the transformer and the related equipment caused by the short-circuit fault is higher in recent years, and the loss caused by the damage is very serious. The entering of large-scale transformer substations inevitably puts increasingly strict requirements on the short-circuit resistance of the transformer.
The short-circuit resistance of a transformer is related to many factors, and the short-circuit resistance is one of the key factors. In addition, some lines have to take other compensating measures, one of which is to increase the impedance, due to the limitation of the breaking capacity of the circuit breaker. In order to reduce short circuit currents in the lines, some substations tend to choose non-standard high impedance transformers as a solution. The short-circuit resistance of the transformer is greatly improved, but the cost is high and the structure is complex.
According to the specification of GB/T6451-2015, the impedance value between the high voltage and the low voltage of the 220kV three-winding transformer is usually 21-24%, and the impedance value between the medium voltage and the low voltage is 7-9%. However, as the capacity of the transformer increases, and in order to limit the short-circuit current of the system and improve the short-circuit resistance of the transformer, more and more users demand an increase in impedance between high and low voltages and between medium and low voltages, for example, an increase in impedance between high and low voltages to 50%, and an increase in impedance between medium and low voltages to 35% or even higher. With the increase of impedance, the influence on the transformer is larger, and the structure of the transformer is more and more complex.
Disclosure of Invention
The utility model discloses there is the structure complicacy among the main prior art of solving, the poor and short not enough of life of operational stability, provides a high impedance transformer built-in reactor's structure, and it has simple structure, the good and long service life's of operational stability characteristics. The short-circuit bearing capacity of the transformer is effectively improved, the insulation reliability is improved, and the possibility of magnetic leakage and local overheating is reduced.
The above technical problem of the present invention can be solved by the following technical solutions:
the utility model provides a structure of high impedance transformer built-in reactor, includes a plurality of windings that are equidistant annular distribution, the winding upper end be equipped with copper line framed bent, copper line framed bent and winding between be equipped with the linking bridge, the winding lower extreme be equipped with the frame stay tube, frame stay tube and winding between, linking bridge and winding all be equipped with the magnetic screen, magnetic screen and frame stay tube between be equipped with a plurality of support columns, all be equipped with cooling blower between two adjacent support columns, cooling blower and frame stay tube between all be equipped with the installing support.
Preferably, the winding comprises an iron core column, and a coil which is in winding sleeve connection with the iron core column is arranged on the periphery of the iron core column.
Preferably, the magnetic shield comprises a magnetic shield disc, and heat dissipation holes communicated with the cooling fan are formed in the magnetic shield disc.
Preferably, the mounting bracket comprises an angle adjusting substrate, a triangular supporting plate is arranged between one end of the angle adjusting substrate and the cooling fan, and a trapezoidal supporting plate in pressure connection with the cooling fan is arranged between the triangular supporting plate and the angle adjusting substrate.
Preferably, mounting angle steels which are fixedly connected with the cooling fan through bolts are arranged between the trapezoidal supporting plate and the cooling fan and between the triangular supporting plate and the cooling fan.
Preferably, the upper end surfaces of the trapezoidal supporting plates and the triangular supporting plates form an inclination angle of 8-15 degrees.
Preferably, a plurality of symmetrically distributed bolt columns movably connected with the frame supporting tube through bolts are arranged at two ends of the angle adjusting base plate, locking nuts sleeved with the bolt columns are arranged on the upper end face of the angle adjusting base plate, and lifting adjusting nuts sleeved with the bolt columns are arranged on the lower end face of the angle adjusting base plate.
Preferably, the windings are arranged in a three-phase delta shape.
Preferably, a plurality of insulating cushion blocks which are distributed annularly at equal intervals are arranged between the connecting support and the copper wire bent frame.
The utility model discloses can reach following effect:
the utility model provides a high impedance transformer embeds reactor's structure compares with prior art, has simple structure, operating stability good and long service life's characteristics. The short-circuit bearing capacity of the transformer is effectively improved, the insulation reliability is improved, and the possibility of magnetic leakage and local overheating is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the distribution structure of the windings in the present invention.
Fig. 3 is a schematic structural view of the magnetic shield according to the present invention.
Fig. 4 is a schematic structural view of a cooling fan mounting bracket according to the present invention.
In the figure: magnetic shield 1, insulating cushion block 2, copper line framed bent 3, linking bridge 4, winding 5, cooling blower 6, cooling blower installing support 7, support column 8, frame stay tube 9, iron core post 10, coil 11, magnetic shield dish 12, louvre 13, lift adjusting nut 14, lock nut 15, bolt post 16, installation angle steel 17, trapezoidal fagging 18, angle adjusting substrate 19, triangle-shaped fagging 20.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Example (b): as shown in fig. 1 to 4, a structure of a reactor with a high impedance transformer includes 3 windings 5 distributed annularly at equal intervals, and the windings 5 are arranged in a three-phase delta shape. The winding 5 comprises an iron core column 10, and a coil 11 which is in winding type sleeve joint with the iron core column 10 is arranged on the periphery of the iron core column 10. The winding 5 upper end is equipped with copper line framed bent 3, is equipped with linking bridge 4 between copper line framed bent 3 and winding 5, is equipped with 5 insulating cushion 2 that are equidistant annular distribution between linking bridge 4 and copper line framed bent 3. The lower end of the winding 5 is provided with a frame supporting tube 9, magnetic shields 1 are arranged between the frame supporting tube 9 and the winding 5 and between the connecting bracket 4 and the winding 5, each magnetic shield 1 comprises a magnetic screen disc 12, and heat dissipation holes 13 communicated with the cooling fan 6 are formed in the magnetic screen discs 12. Be equipped with 3 support columns 8 between magnetism shielding 1 and frame stay tube 9, all be equipped with cooling blower 6 between two adjacent support columns 8, all be equipped with installing support 7 between cooling blower 6 and frame stay tube 9.
The mounting bracket 7 comprises an angle adjusting base plate 19, two ends of the angle adjusting base plate 19 are provided with 2 bolt columns 16 which are distributed symmetrically and are movably connected with the rack supporting tube 9 through bolts, the upper end face of the angle adjusting base plate 19 is provided with a locking nut 15 which is sleeved with the bolt columns 16, and the lower end face of the angle adjusting base plate 19 is provided with a lifting adjusting nut 14 which is sleeved with the bolt columns 16. A triangular supporting plate 20 is arranged between one end of the angle adjusting substrate 19 and the cooling fan 6, and a trapezoidal supporting plate 18 which is in pressure joint with the cooling fan 6 is arranged between the triangular supporting plate 20 and the angle adjusting substrate 19. The upper ends of the trapezoidal supporting plates 18 and the triangular supporting plates 20 are inclined at an angle of 12 degrees. And mounting angle steels 17 fixedly connected with the cooling fan 6 through bolts are arranged between the trapezoidal supporting plate 18 and the cooling fan 6 and between the triangular supporting plate 20 and the cooling fan 6.
In conclusion, the reactor built-in structure of the high-impedance transformer has the characteristics of simple structure, good operation stability and long service life. The short-circuit bearing capacity of the transformer is effectively improved, the insulation reliability is improved, and the possibility of magnetic leakage and local overheating is reduced.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without deviating from the basic characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
In conclusion, the above description is only the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.
Claims (9)
1. A structure of a built-in reactor of a high-impedance transformer is characterized in that: including a plurality of windings (5) that are equidistant annular distribution, winding (5) upper end be equipped with copper line framed bent (3), copper line framed bent (3) and winding (5) between be equipped with linking bridge (4), winding (5) lower extreme be equipped with frame stay tube (9), frame stay tube (9) and winding (5) between, link (4) and winding (5) between all be equipped with magnetic shield (1), magnetic shield (1) and frame stay tube (9) between be equipped with a plurality of support columns (8), all be equipped with cooling blower (6) between two adjacent support columns (8), cooling blower (6) and frame stay tube (9) between all be equipped with installing support (7).
2. The structure of the high-impedance transformer built-in reactor according to claim 1, characterized in that: the winding (5) comprises an iron core column (10), wherein a coil (11) which is in wound sleeve joint with the iron core column (10) is arranged on the periphery of the iron core column (10).
3. The structure of the high-impedance transformer built-in reactor according to claim 1, characterized in that: the magnetic shielding device is characterized in that the magnetic shielding (1) comprises a magnetic shielding disc (12), and heat dissipation holes (13) communicated with the cooling fan (6) are formed in the magnetic shielding disc (12).
4. The structure of the high-impedance transformer built-in reactor according to claim 1, characterized in that: installing support (7) include angle modulation base plate (19), angle modulation base plate (19) one end and cooling blower (6) between be equipped with triangle-shaped fagging (20), triangle-shaped fagging (20) and angle modulation base plate (19) between be equipped with trapezoidal fagging (18) with cooling blower (6) looks crimping.
5. The structure of the high-impedance transformer built-in reactor according to claim 4, characterized in that: and mounting angle steel (17) fixedly connected with the cooling fan (6) through bolts are arranged between the trapezoidal supporting plate (18) and the cooling fan (6) and between the triangular supporting plate (20) and the cooling fan (6).
6. The structure of the high-impedance transformer built-in reactor according to claim 4, characterized in that: the upper end surfaces of the trapezoidal supporting plates (18) and the triangular supporting plates (20) form an inclination angle of 8-15 degrees.
7. The structure of the high-impedance transformer built-in reactor according to claim 4, characterized in that: angle adjustment base plate (19) both ends be equipped with a plurality of bolt posts (16) that are the symmetric distribution and be movable bolted connection with frame stay tube (9), angle adjustment base plate (19) up end be equipped with lock nut (15) that cup joint mutually with bolt post (16), angle adjustment base plate (19) down terminal surface be equipped with lift adjusting nut (14) that cup joint mutually with bolt post (16).
8. The structure of the high-impedance transformer built-in reactor according to claim 1, characterized in that: the windings (5) are arranged in a three-phase delta shape.
9. The structure of the high-impedance transformer built-in reactor according to claim 1, characterized in that: a plurality of insulating cushion blocks (2) which are distributed in an equidistant annular mode are arranged between the connecting support (4) and the copper wire bent frame (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120654847.7U CN214541873U (en) | 2021-03-31 | 2021-03-31 | Structure of built-in reactor of high-impedance transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120654847.7U CN214541873U (en) | 2021-03-31 | 2021-03-31 | Structure of built-in reactor of high-impedance transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214541873U true CN214541873U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120654847.7U Active CN214541873U (en) | 2021-03-31 | 2021-03-31 | Structure of built-in reactor of high-impedance transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214541873U (en) |
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2021
- 2021-03-31 CN CN202120654847.7U patent/CN214541873U/en active Active
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