CN212934359U - Compact transformer - Google Patents
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- CN212934359U CN212934359U CN202022177027.1U CN202022177027U CN212934359U CN 212934359 U CN212934359 U CN 212934359U CN 202022177027 U CN202022177027 U CN 202022177027U CN 212934359 U CN212934359 U CN 212934359U
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Abstract
The utility model relates to the technical field of transformers, in particular to a compact transformer, which comprises an oil tank with a radiator and an oil conservator, a transformer body, an on-load tap-changer, a high-voltage sleeve and a low-voltage sleeve; the high-voltage bushing and the low-voltage bushing are respectively connected with the transformer body through lead connectors; the on-load tap-changer is connected with the high-voltage primary side of the transformer body; the section of the oil tank is octagonal, the oil tank is divided into an upper oil tank and a lower oil tank which are connected in a sealing way, the upper oil tank is divided into a first oil chamber and a second oil chamber, a special-shaped groove and a rectangular groove are arranged in the lower oil tank corresponding to the upper oil tank, the bottom of the lower oil tank is flat, the transformer body is positioned in the second oil chamber, and the lower part of the transformer body is fixed in the rectangular groove; the on-load tap-changer is positioned in the first oil chamber, and the required height can be adjusted in the special-shaped groove; therefore, the power supply quality of a user is effectively improved, the requirements on continuity, safety, reliability and stability of power supply are met, and the material consumption of the transformer is reduced.
Description
Technical Field
The utility model relates to a transformer technical field, in particular to compact transformer.
Background
The oil-immersed transformer mainly comprises an oil tank, a transformer body, a tap switch, a high-voltage bushing, a low-voltage bushing and the like. The transformer body of the oil-immersed transformer is a core element of the transformer, is arranged in an oil tank of the transformer, and the heat dissipated during the operation of the transformer is taken away by insulating oil. In the prior art, an oil tank adopts a radiating fin type oil tank, and a tap changer adopts an off-circuit tap changer or an on-load tap changer (on-load voltage regulating tap changer).
At present, oil immersed transformers used in China mostly adopt a full-sealing structure (a transformer oil tank is formed in an integrated mode), and the transformer oil tank is generally a corrugated oil tank. The transformer with the voltage class of 35kV or more and the capacity of more than 1000kVA needs to be additionally provided with an oil conservator (conservator) to ensure the safe operation of the transformer, namely when the oil temperature of the transformer rises due to the increase of load and the oil in an oil tank expands, the excessive oil flows into the conservator; when the oil temperature is reduced, the oil in the oil conservator flows into the oil tank again, and the effect of automatically adjusting the oil level is achieved.
Along with the improvement of production and living standards of people, the power consumption is greatly increased, the requirement on power supply quality is higher and higher, and the requirements on continuous, safe, reliable, stable and consumption-reducing power supply are met. In order to meet the factors of voltage fluctuation, load change voltage fluctuation and the like of a power grid system, in the prior art, an automatic voltage regulating device and a transformer on-load voltage regulating tap-changer (on-load tap-changer) are additionally arranged on the high-voltage primary side (the primary side refers to a voltage input end, and the secondary side refers to a voltage output end) of a transformer, but the height of the connection position of a transformer body and the on-load tap-changer is not matched due to factors such as user voltage grade, load size and switch type, and meanwhile, the whole oil-immersed transformer consumes more materials.
In addition, patent CN200820049985.7 discloses an oil tank of an oil-immersed transformer, the section of the oil tank is octagonal.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defect and not enough that exist in the current, for this reason the utility model provides a compact transformer can reduce the material consumption of transformer, has improved user's power supply quality simultaneously.
In order to achieve the above object, the present invention provides a compact transformer, comprising: the transformer comprises an oil tank with a radiator and an oil conservator, a transformer body, an on-load tap-changer, a high-voltage sleeve and a low-voltage sleeve; the high-voltage bushing and the low-voltage bushing are respectively connected with the transformer body through lead connectors; the on-load tap-changer is connected with the high-voltage primary side of the transformer body;
the section of the oil tank is octagonal and is divided into an upper oil tank and a lower oil tank which are connected in a sealing manner; the upper oil-saving tank is divided into a first oil chamber and a second oil chamber by a partition plate, the on-load tap-changer is arranged in the first oil chamber, and the transformer body is arranged in the second oil chamber; a special-shaped groove and a rectangular groove which correspond to the first oil chamber and the second oil chamber respectively are arranged in the lower oil-saving tank, and the bottom of the lower oil-saving tank is flat; the lower part of the transformer body is fixed in the rectangular groove.
Furthermore, the upper part of the upper oil tank is provided with an elbow joint, and the elbow joint is used for fixedly connecting the radiator.
Further, the upper oil tank and the lower oil tank are connected in a bolt assembly mode.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the oil tank adopts an octagonal structure, four corners of the original rectangular oil tank are removed, and materials are saved;
(2) the height position of the on-load tap-changer relative to the oil tank switch can be adjusted by means of a special-shaped groove in the lower oil tank according to the voltage grade, the capacity and the switch type of the transformer, so that the on-load tap-changer is matched with the transformer body;
(3) the pipe joint at the upper part of the radiator is connected with the elbow joint arranged at the upper part of the upper oil tank, so that the heat dissipation center height of the radiator is improved;
(4) a rectangular groove structure is arranged in the lower oil tank, so that the transformer body is effectively fixed in the lower oil tank; and the bottom of the lower oil tank is designed to be flat, so that the overall height and size of the transformer are effectively reduced, and the material loss is reduced.
Drawings
Fig. 1 is a top view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a top view of the upper oil tank of the present invention.
Fig. 4 is a top view of the lower fuel-saving tank of the present invention.
Fig. 5 is an internal position diagram of the transformer body of the present invention.
Wherein: the transformer comprises an oil tank 1, a transformer body 2, an on-load tap changer 3, a radiator 4, an oil conservator 5, a high-voltage sleeve 6, a low-voltage sleeve 7, an upper oil tank 11, a lower oil tank 12, a partition plate 13, a bent pipe joint 14, an oil tank switch 21, a first oil chamber 111, a second oil chamber 112, a special-shaped groove 121 and a rectangular groove 122.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a compact transformer, including: the transformer comprises an oil tank 1 with a radiator 4 and an oil conservator 5, a transformer body 2, an on-load tap-changer 3, a high-voltage bushing 6 and a low-voltage bushing 7; the high-voltage bushing 6 and the low-voltage bushing 7 are respectively connected with the transformer body 2 through lead connectors; the on-load tap-changer 3 is connected with the high-voltage primary side of the transformer body 2, namely an oil tank switch 21 is arranged on the transformer body 2; the section of the oil tank 1 is octagonal, and the oil tank is divided into an upper oil tank 11 and a lower oil tank 12 which are connected in a sealing manner; the upper oil-saving tank 11 is divided into a first oil chamber 111 and a second oil chamber 112 by a partition plate 13, the on-load tap-changer 3 is arranged in the first oil chamber 111, and the transformer body 2 is arranged in the second oil chamber 112; a special-shaped groove 121 and a rectangular groove 122 which correspond to the first oil chamber 111 and the second oil chamber 112 respectively are arranged in the lower oil-saving tank 12, and the bottom of the lower oil-saving tank 12 is flat; the lower part of the transformer body 2 is fixed in the rectangular groove 122, and the special-shaped groove 121 can provide a space for adjusting the height of the on-load tap-changer 3, so that the height of the on-load tap-changer can be conveniently matched with the height of the oil tank switch 21 arranged on the transformer body 2; the bottom of the lower oil tank 12 is flat and the oil tank 1 is octagonal, so that the consumption of the whole material can be reduced.
Preferably, the upper part of the upper oil tank 11 is provided with an elbow joint 14, and the elbow joint 14 is used for fixedly connecting the radiator 4, wherein the radiator 4 is an existing finned radiator welded with a connecting pipeline, and the elbow joint 14 is matched with the connecting pipeline.
Preferably, the upper-section oil tank 11 and the lower-section oil tank 12 are connected in a bolt assembly manner, and a sealing gasket is clamped between the upper-section oil tank 11 and the lower-section oil tank 12, wherein the sealing gasket is preferably made of rubber.
The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. Therefore, the above-described embodiments of the present invention should be considered only as illustrative and not restrictive in any way, the scope of the present invention being indicated by the claims, and any changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (3)
1. A compact transformer is characterized by comprising an oil tank (1) with a radiator (4) and an oil conservator (5), a transformer body (2), an on-load tap-changer (3), a high-voltage bushing (6) and a low-voltage bushing (7); the high-voltage bushing (6) and the low-voltage bushing (7) are respectively connected with the transformer body (2) through lead connectors; the on-load tap-changer (3) is connected with the high-voltage primary side of the transformer body (2);
the section of the oil tank (1) is octagonal, and the oil tank is divided into an upper oil tank (11) and a lower oil tank (12) which are connected in a sealing manner; the upper oil-saving tank (11) is divided into a first oil chamber (111) and a second oil chamber (112) through a partition plate (13), the on-load tap-changer (3) is arranged in the first oil chamber (111), and the transformer body (2) is arranged in the second oil chamber (112); a special-shaped groove (121) and a rectangular groove (122) which correspond to the first oil chamber (111) and the second oil chamber (112) respectively are arranged in the lower oil-saving tank (12), and the bottom of the lower oil-saving tank (12) is flat; the lower part of the transformer body (2) is fixed in the rectangular groove (122).
2. The compact transformer according to claim 1, characterized in that the upper part of the upper oil tank (11) is provided with a bent pipe joint (14), and the bent pipe joint (14) is used for fixedly connecting the radiator (4).
3. The compact transformer according to claim 1, characterized in that the upper and lower fuel tanks (11, 12) are bolted assembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022177027.1U CN212934359U (en) | 2020-09-29 | 2020-09-29 | Compact transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022177027.1U CN212934359U (en) | 2020-09-29 | 2020-09-29 | Compact transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212934359U true CN212934359U (en) | 2021-04-09 |
Family
ID=75310788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022177027.1U Active CN212934359U (en) | 2020-09-29 | 2020-09-29 | Compact transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212934359U (en) |
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2020
- 2020-09-29 CN CN202022177027.1U patent/CN212934359U/en active Active
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