CN214797025U

CN214797025U - Oil-immersed transformer that heat dispersion is good

Info

Publication number: CN214797025U
Application number: CN202120948026.4U
Authority: CN
Inventors: 刘迎亚; 刘亚彬
Original assignee: Xi'an Shengxin Electric Power Co ltd
Current assignee: Xi'an Shengxin Electric Power Co ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2021-11-19
Anticipated expiration: 2031-05-06

Abstract

The utility model provides an oil-immersed transformer that heat dispersion is good, it includes that transformer body and a plurality of vertical intervals lay fin on the transformer body outer wall, the transformer body lower extreme is provided with the base, be provided with a plurality of fans on the base, the fan air outlet sets up, base week side rigid coupling has to enclose to establish the aviation baffle in transformer body lower part week side, be provided with on the transformer body diapire and be located the air ducting directly over the fan, the air ducting be used for with the cold wind water conservancy diversion that the fan blew off extremely with the laminating of aviation baffle inner wall. The utility model discloses a set up the aviation baffle in base week side to stabilize water conservancy diversion to the aviation baffle inboard through the cold wind that the air guide blew off the fan, thereby make cold wind can be in the same direction as delaying the clearance circulation between the fin, both strengthened the heat dissipation of fin, can cool down the transformer body again, realized the higher effect of forced air cooling efficiency.

Description

Oil-immersed transformer that heat dispersion is good

Technical Field

The utility model relates to a power equipment's technical field especially relates to an oil-immersed transformer that heat dispersion is good.

Background

The oil immersed transformer is a novel high-performance transformer with more reasonable structure and better performance, and the three-dimensional wound iron core has no air gap in a magnetic circuit because three core columns are arranged in a three-dimensional manner in an equilateral triangle, so that the winding is tighter, the three magnetic circuits are consistent in length and shortest, and the cross sectional area of the core columns of the iron core is closer to a circle, so that the performance is further improved, the loss is reduced, the noise is reduced, the three-phase balance is realized, the third harmonic component is reduced, and the product is more suitable for urban and rural power, the transformation of power grids of industrial and mining enterprises, and is more suitable for combined transformers and transformers for pre-installed substations. The transformer generates a large amount of heat during use, and heat dissipation needs to be performed through an oil tank filled with heat dissipation oil.

The current chinese patent with patent publication number CN210865827U provides a heat dissipation mechanism for oil immersed transformer, including the transformer body, the bottom fixedly connected with bottom quick-witted case of transformer body, the bottom of bottom quick-witted case is provided with the filter screen, the top of filter screen runs through bottom quick-witted case and extends to the inside of bottom quick-witted case, the equal vertical baffle that is provided with in both sides of bottom quick-witted incasement portion. The utility model discloses a blow off cold wind through the rotation of first flabellum and second flabellum, dispel the heat to oil immersed transformer to reached and to have carried out mechanical heat dissipation, solved current oil immersed transformer and can not carry out mechanical radiating problem.

The above prior art solutions have the following drawbacks: the cold wind that blows off from quick-witted case directly strikes on the diapire of transformer body, overflows to all around easily to the cold wind that blows off hardly carries out effective heat dissipation to transformer body upper portion, and the radiating efficiency is low.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art to a provide an oil immersed transformer that heat dispersion is good, it has the efficient advantage of forced air cooling.

In order to realize the above-mentioned purpose, the utility model provides an oil-immersed transformer that heat dispersion is good, lay including transformer body and a plurality of vertical interval fin on the transformer body outer wall, transformer body lower extreme is provided with the base, be provided with a plurality of fans on the base, the fan air outlet sets up, the rigid coupling of base week side has to enclose to establish the aviation baffle in transformer body lower part week side, be provided with on the transformer body diapire and be located the air guide directly over the fan, the air guide be used for with the cold wind water conservancy diversion that the fan blew off extremely with the laminating of aviation baffle inner wall.

Furthermore, a gap is formed between the fan and the bottom wall of the transformer body, and the vertical height of the lower end of the air deflector is not higher than the height of the air outlet of the fan.

Furthermore, the air guide piece comprises an air guide cone which is arranged on the bottom wall of the transformer body and is coaxial with the fan, the top of the air guide cone faces the fan, and the conical surface of the air guide cone is an arc surface with the center of circle pointing to the central axis of the fan.

Furthermore, the inner wall of the connecting part of the air deflector and the base is provided with an arc surface which is reversely corresponding to the upper arc surface of the air guide cone.

Furthermore, the upper end of the air deflector is inclined towards the middle of the transformer body.

Furthermore, the base is provided with an induced air cover arranged around the circumferential direction of the fan air inlet, and the air inlets of the induced air cover are arranged on different circumferential sides of the base.

Furthermore, a filter screen is arranged at the air inlet of the induced draft cover.

The utility model provides a pair of oil-immersed transformer that heat dispersion is good through week in the base setting aviation baffle to it is inboard to lead to the aviation baffle through the cold wind that the air guide component blew off the fan stable water conservancy diversion, thereby make cold wind can be in the same direction as delaying the clearance circulation between the fin, both strengthened the heat dissipation of fin, can cool down to the transformer body again, and air-cooled efficiency is higher.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following provides a detailed description of the present invention with reference to the embodiments of the present invention and the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the overall structure of the present invention.

The reference numerals in the drawings are explained below.

1. A transformer body; 2. a fin; 3. a base; 4. a fan; 5. an air deflector; 6. a wind guide cone; 7. an induced draft cover; 8. and (5) filtering by using a filter screen.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "front", "upper", "lower", "left", "right", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, an oil-immersed transformer with good heat dissipation performance includes a transformer body 1 and a plurality of fins 2 vertically arranged on an outer wall of the transformer body 1 at intervals, the fins 2 are fixedly connected to an oil tank of the transformer body 1, a base 3 is arranged at a lower end of the transformer body 1, and specifically, the transformer body 1 is bolted and fixed on an upper end face of the base 3. Be provided with a plurality of fans 4 on the base 3, the air outlet of fan 4 sets up upwards, is the clearance setting between fan 4 and the 1 diapire of transformer body. The periphery of the base 3 is fixedly connected with an air deflector 5 which is arranged on the periphery of the lower part of the transformer body 1 in a surrounding mode, the vertical height of the lower end of the air deflector 5 is not higher than the height of an air outlet of the fan 4, an air guide part which is located right above the fan 4 is arranged on the bottom wall of the transformer body 1, and the air guide part is used for guiding cold air blown out by the fan 4 to be attached to the inner wall of the air deflector 5.

As shown in fig. 1-2, the air guide member includes an air guide cone 6 disposed on the bottom wall of the transformer body 1 and coaxial with the fan 4, the bottom of the air guide cone 6 is welded and fixed to the bottom wall of the transformer body 1, the top of the air guide cone 6 faces the fan 4, and the conical surface of the air guide cone 6 is an arc surface with a center pointing to the central axis of the fan 4. The inner wall of the connecting part of the air deflector 5 and the base 3 is set to be an arc surface which is reversely corresponding to the arc surface on the air guide cone 6.

When the transformer body 1 works, the fan 4 is started, the fan 4 blows cold air onto the air guide cone 6 when the fan 4 works, and the air guide cone 6 guides air flow through an inclined surface on the air guide cone 6 so that the vertically blown air flow is diffused to a connecting part of the air guide plate 5 and the base 3; simultaneously the connecting portion inner wall of aviation baffle 5 and base 3 sets up to the cambered surface that corresponds with the cambered surface is reverse on the guide cone 6, make the air current that blows to aviation baffle 5 and base 3 connecting portion by being led to from the inboard vertical blowout of aviation baffle 5, thereby make the cold wind that fan 4 blew out can directly cool off 1 diapire of transformer body, can follow the clearance that extends to between the adjacent fin 2 again and circulate, both can cool down transformer body 1, fin 2's heat dissipation has been strengthened again, air cooling efficiency is higher.

In order to further ensure that the cold air guided by the air guide plate 5 can flow along the gap between the two adjacent fins 2, as shown in fig. 1-2, the upper end of the air guide plate 5 is inclined toward the middle of the transformer body 1, so that the air flow is gathered toward the middle of the transformer body 1 under the action of the air guide plate 5, and the air flow can more effectively adhere to the outer wall of the transformer body 1 to flow between the two adjacent fins 2, thereby improving the air cooling efficiency.

In order to ensure a stable air intake of the fan 4, as shown in fig. 1-2, an induced air cover 7 is disposed on the base 3 and surrounds the air inlet of the fan 4, the air inlets of the induced air covers 7 are disposed on different peripheral sides of the base 3, the induced air cover 7 is located at the lower portion of the fan 4, and a filter screen 8 is disposed at the air inlet of the induced air cover 7.

When the fan 4 is started, external air is filtered by the filter screen 8, then flows to the lower part of the fan 4 through the air inducing cover 7 and is driven by the fan 4 to flow upwards, and the filter screen 8 primarily filters external impurities so as to prevent the impurities from being wound on the fan 4; the air inlets of the air draft covers 7 are arranged on different peripheral sides of the base 3, so that stable air inlet amount when the fans 4 operate simultaneously can be ensured as far as possible.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The oil immersed transformer with good heat dissipation performance comprises a transformer body (1) and a plurality of fins (2) arranged on the outer wall of the transformer body (1) at intervals, and is characterized in that the lower end of the transformer body (1) is provided with a base (3), the base (3) is provided with a plurality of fans (4), air outlets of the fans (4) are arranged upwards, air guide plates (5) are fixedly arranged on the periphery sides of the lower portion of the transformer body (1) in a surrounding mode, air guide parts located right above the fans (4) are arranged on the bottom wall of the transformer body (1), and the air guide parts are used for guiding cold air blown out by the fans (4) to be attached to the inner wall of the air guide plates (5).

2. The oil immersed transformer with good heat dissipation performance according to claim 1, wherein a gap is formed between the fan (4) and the bottom wall of the transformer body (1), and the vertical height of the lower end of the air deflector (5) is not higher than the height of the air outlet of the fan (4).

3. The oil-immersed transformer with good heat dissipation performance according to claim 2, wherein the air guide component comprises an air guide cone (6) which is arranged on the bottom wall of the transformer body (1) and is coaxial with the fan (4), the top of the air guide cone (6) faces the fan (4), and the conical surface of the air guide cone (6) is an arc surface with the center of circle pointing to the central axis of the fan (4).

4. The oil-immersed transformer with good heat dissipation performance according to claim 3, wherein the inner wall of the connecting portion of the air deflector (5) and the base (3) is an arc surface which is in reverse correspondence with the arc surface on the air guide cone (6).

5. The oil-immersed transformer with good heat dissipation performance according to claim 1, wherein the upper end of the air deflector (5) is inclined towards the middle of the transformer body (1).

6. The oil-immersed transformer with good heat dissipation performance according to claim 5, wherein an air-inducing cover (7) is arranged on the base (3) and surrounds the circumferential direction of the air inlet of the fan (4), and the air inlets of the air-inducing covers (7) are arranged on different circumferential sides of the base (3).

7. The oil-immersed transformer with good heat dissipation performance according to claim 6, wherein a filter screen (8) is arranged at an air inlet of the induced draft cover (7).