CN211016701U - Air passage stay bar used in low-voltage coil of dry-type transformer - Google Patents
Air passage stay bar used in low-voltage coil of dry-type transformer Download PDFInfo
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- CN211016701U CN211016701U CN201922061701.7U CN201922061701U CN211016701U CN 211016701 U CN211016701 U CN 211016701U CN 201922061701 U CN201922061701 U CN 201922061701U CN 211016701 U CN211016701 U CN 211016701U
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Abstract
The utility model relates to an air flue stay for among dry-type transformer low-voltage coil, the dry-type transformer technical field that belongs to, including the winding iron core, the winding iron core upper end is equipped with a pair of yoke that goes up, and the winding iron core lower extreme is equipped with a pair of yoke down, is equipped with between two yoke down and fixes the fagging with the winding iron core nested spacing connection of looks insulating type, and lower yoke lower extreme is equipped with the bed frame, and the winding iron core periphery is equipped with the air flue subassembly that cup joints mutually with the winding iron core, and between air flue subassembly and the yoke of going up, air flue subassembly and the fagging inter-plate. The heat dissipation structure has the characteristics of compact structure, good toughness, good heat dissipation effect and long service life. The problem that the transformer is in a high-temperature state for a long time is solved. The working efficiency and the service life of the transformer are improved. The phenomena of load loss and impedance voltage increase caused by overload due to overhigh temperature are avoided.
Description
Technical Field
The utility model relates to a dry-type transformer technical field, concretely relates to an air flue stay for among dry-type transformer low voltage coil.
Background
Dry-type transformers are widely used in local lighting, high-rise buildings, airports, wharf CNC machines and other places, and simply, dry-type transformers refer to transformers in which iron cores and windings are not immersed in insulating oil. The cooling method is divided into natural air cooling and forced air cooling. During natural air cooling, the transformer can continuously operate for a long time under the rated capacity. When forced air cooling is carried out, the output capacity of the transformer can be improved by 50 percent. The device is suitable for intermittent overload operation or emergency accident overload operation; because the load loss and the impedance voltage amplification are large during overload and the device is in a non-economic operation state, the device is not required to be in continuous overload operation for a long time.
The air duct stay in the low-voltage coil of the general dry-type transformer is an epoxy stay. It has poor heat conductivity and is not favorable for heat dissipation. Poor toughness and easy aging under a high temperature state for a long time. The working efficiency and the service life of the transformer are affected.
Disclosure of Invention
The utility model discloses mainly solve and have toughness poor, the radiating effect is poor and life is short not enough among the prior art, provide an air flue stay that is arranged in dry-type transformer low voltage coil, it has compact structure, toughness good, the radiating effect good and long service life's characteristics. The problem that the transformer is in a high-temperature state for a long time is solved. The working efficiency and the service life of the transformer are improved. The phenomena of load loss and impedance voltage increase caused by overload due to overhigh temperature are avoided.
The above technical problem of the present invention can be solved by the following technical solutions:
the air passage stay for the low-voltage coil of the dry-type transformer comprises a winding iron core, wherein a pair of upper iron yokes are arranged at the upper end of the winding iron core, a pair of lower iron yokes are arranged at the lower end of the winding iron core, a supporting plate which is fixedly connected with the winding iron core in an insulating type nesting limiting manner is arranged between the two lower iron yokes, a base frame is arranged at the lower end of the lower iron yoke, an air passage component which is sleeved with the winding iron core is arranged on the periphery of the winding iron core, and a plurality of insulating cushion blocks are arranged between the air passage component and the upper iron yokes and between the air passage component and the supporting.
Preferably, the air passage component comprises an inner heat dissipation insulating sleeve, an outer insulating sleeve sleeved with the inner heat dissipation insulating sleeve is arranged outside the inner heat dissipation insulating sleeve, and a plurality of air passage supporting strips distributed at equal intervals are arranged between the outer insulating sleeve and the inner heat dissipation insulating sleeve. The surface of the air passage stay is subjected to oxidation film treatment, so that a certain insulation effect is increased.
Preferably, the air flue stay comprises a square tube, and a hollow air flue cavity integrated with the square tube is arranged in the square tube. The hollow air passage cavity enlarges the heat dissipation area and greatly improves the heat dissipation efficiency, thereby reducing the temperature rise of the transformer.
Preferably, the square tube is made of aluminum magnesium alloy.
Preferably, a heat radiation fan connected with the lower iron yoke through bolts is arranged between the air channel assembly and the two lower iron yokes.
Preferably, the upper end of the upper iron yoke is provided with a plurality of lifting lug plates.
Preferably, an overload protection relay communicated with a phase circuit of the winding iron core is arranged between the two upper iron yokes.
The utility model discloses can reach following effect:
the utility model provides an air flue stay for among dry-type transformer low voltage coil compares with prior art, has compact structure, good, the good and long service life's of radiating effect characteristics of toughness. The problem that the transformer is in a high-temperature state for a long time is solved. The working efficiency and the service life of the transformer are improved. The phenomena of load loss and impedance voltage increase caused by overload due to overhigh temperature are avoided.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the air passage assembly of the present invention.
Fig. 3 is a schematic structural view of the airway stay of the present invention.
Fig. 4 is a cross-sectional view of an airway stay in the present invention.
In the figure: go up indisputable yoke 1, lift by crane otic placode 2, overload protection relay 3, winding iron core 4, insulating cushion 5, air flue subassembly 6, fagging 7, indisputable yoke 8 down, cooling fan 9, bed frame 10, outer insulating cover 11, air flue stay 12, interior heat dissipation insulating cover 13, square pipe 14, cavity air flue chamber 15.
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. 1-4, an air duct stay for a low-voltage coil of a dry-type transformer comprises a winding core 4, a pair of upper yokes 1 are arranged at the upper end of the winding core 4, and 4 lifting lug plates 2 are arranged at the upper end of the upper yokes 1. An overload protection relay 3 communicated with a phase circuit of the winding iron core 4 is arranged between the two upper iron yokes 1. The lower end of the winding iron core 4 is provided with a pair of lower iron yokes 8, a supporting plate 7 which is fixedly connected with the winding iron core 4 in an insulating nesting and limiting mode is arranged between the two lower iron yokes 8, the lower end of each lower iron yoke 8 is provided with a base frame 10, the periphery of the winding iron core 4 is provided with an air passage component 6 which is sleeved with the winding iron core 4, each air passage component 6 comprises an inner heat dissipation insulating sleeve 13, an outer insulating sleeve 11 which is sleeved with the inner heat dissipation insulating sleeve 13 is arranged outside the inner heat dissipation insulating sleeve 13, and 17 air passage supporting strips 12 which are distributed at equal intervals are arranged between the outer insulating sleeve 11 and the inner heat dissipation insulating sleeve. The air flue stay 12 comprises a square pipe 14, and the square pipe 14 is made of aluminum magnesium alloy. A hollow air passage cavity 15 integrated with the square tube 14 is arranged in the square tube 14. The hollow air flue cavity 15 is communicated with the heat radiation fan 9. 8 insulating cushion blocks 5 are arranged between the air channel component 6 and the upper iron yoke 1 and between the air channel component 6 and the supporting plate 7. And a heat radiation fan 9 which is connected with the lower iron yoke 8 through bolts is arranged between the air channel assembly 6 and the two lower iron yokes 8.
To sum up, the air passage stay for the low-voltage coil of the dry-type transformer has the characteristics of compact structure, good toughness, good heat dissipation effect and long service life. The problem that the transformer is in a high-temperature state for a long time is solved. The working efficiency and the service life of the transformer are improved. The phenomena of load loss and impedance voltage increase caused by overload due to overhigh temperature are avoided.
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 (7)
1. An air duct stay for use in a low voltage coil of a dry-type transformer, comprising: including winding iron core (4), winding iron core (4) upper end be equipped with a pair of yoke (1) of going up, winding iron core (4) lower extreme be equipped with a pair of yoke (8) down, be equipped with between two yoke (8) down with winding iron core (4) looks insulating type nested spacing stay plate (7) of being connected fixedly, yoke (8) lower extreme down be equipped with bed frame (10), winding iron core (4) periphery be equipped with air flue subassembly (6) that cup joint mutually with winding iron core (4), air flue subassembly (6) and last yoke (1) between, air flue subassembly (6) and stay plate (7) between all be equipped with a plurality of insulating cushion (5).
2. The airway stay for use in a low voltage coil of a dry-type transformer as claimed in claim 1, wherein: air flue subassembly (6) including interior heat dissipation insulating cover (13), interior heat dissipation insulating cover (13) be equipped with outer insulating cover (11) that cup joint mutually with interior heat dissipation insulating cover (13) outward, outer insulating cover (11) and interior heat dissipation insulating cover (13) between be equipped with a plurality of air flue stays (12) that are equidistant distribution.
3. The airway stay for use in a low voltage coil of a dry-type transformer as claimed in claim 2, wherein: the air passage stay (12) comprises a square pipe (14), and a hollow air passage cavity (15) integrated with the square pipe (14) is arranged in the square pipe (14).
4. An air duct stay for use in a low voltage coil of a dry-type transformer as claimed in claim 3, wherein: the square tube (14) is made of aluminum magnesium alloy.
5. The airway stay for use in a low voltage coil of a dry-type transformer as claimed in claim 1, wherein: and a heat radiation fan (9) which is connected with the lower iron yoke (8) through bolts is arranged between the air passage component (6) and the two lower iron yokes (8).
6. The airway stay for use in a low voltage coil of a dry-type transformer as claimed in claim 1, wherein: the upper end of the upper iron yoke (1) is provided with a plurality of lifting lug plates (2).
7. The airway stay for use in a low voltage coil of a dry-type transformer as claimed in claim 1, wherein: and an overload protection relay (3) communicated with a phase circuit of the winding iron core (4) is arranged between the two upper iron yokes (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922061701.7U CN211016701U (en) | 2019-11-26 | 2019-11-26 | Air passage stay bar used in low-voltage coil of dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922061701.7U CN211016701U (en) | 2019-11-26 | 2019-11-26 | Air passage stay bar used in low-voltage coil of dry-type transformer |
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| Publication Number | Publication Date |
|---|---|
| CN211016701U true CN211016701U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922061701.7U Active CN211016701U (en) | 2019-11-26 | 2019-11-26 | Air passage stay bar used in low-voltage coil of dry-type transformer |
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| CN (1) | CN211016701U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908636A (en) * | 2021-01-18 | 2021-06-04 | 台达电子企业管理（上海）有限公司 | Magnetic assembly |
-
2019
- 2019-11-26 CN CN201922061701.7U patent/CN211016701U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908636A (en) * | 2021-01-18 | 2021-06-04 | 台达电子企业管理（上海）有限公司 | Magnetic assembly |
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