CN210245262U

CN210245262U - Oil-immersed power transformer

Info

Publication number: CN210245262U
Application number: CN201921186475.9U
Authority: CN
Inventors: Junxi Chen; 陈俊喜
Original assignee: Weiguan Electric Co Ltd
Current assignee: Weiguan Electric Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-04-03
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses an oil-immersed power transformer relates to transformer technical field. This oil-immersed power transformer, including the transformer body, the positive fixed mounting of transformer body has the radiator piece, and the right side fixed mounting of transformer body has the water tank, and the top fixed mounting of water tank has miniature pump, and miniature pump's water inlet passes through the inner chamber intercommunication of aqueduct and water tank, and the bottom of aqueduct extends to the position that is close to the bottom in the water tank, and miniature pump's delivery port and the one end of buckling the pipe are connected and are linked together. This oil-immersed power transformer, when the pipe of buckling water, the heat between the adjacent radiator fin uses the air to conduct to the lower pipe surface of buckling of temperature as the medium, has promoted the cooling of radiator fin, further improves radiator fin heat of discharge's conduction mode simultaneously through the radiating piece to guaranteed that the heat of gathering is easily discharged when being used for high power transformer between the adjacent radiator fin.

Description

Oil-immersed power transformer

Technical Field

The utility model relates to a transformer technical field specifically is an oil-immersed power transformer.

Background

The oil-immersed power transformer is usually provided with the radiator fins on the surface, heat generated in the working process inside the transformer is conducted to the air through the radiator fins in a heat conduction mode, so that the normal use of the transformer is ensured by achieving the cooling effect, but the use requirement of the existing high-power transformer cannot be met only by the heat dissipation work of the radiator fins, and therefore the mode of heat dissipation through the radiator fins needs to be further improved.

For example, the chinese granted patent publication No. (CN 203690053U) discloses a cooling device for a large transformer, in which a water pump sends cooling water in a water storage container into a cooling water pipe and discharges the cooling water through a drain hole to cool a heat sink, and a water tank collects the cooling water cooled by the heat sink and recovers the cooling water to the water tank through a drain pipe. However, by spraying water on the surface of the heat sink to cool down, when the transformer is used, the transformer surface exposed in the air is further accelerated to be rusted due to the long-term residual water stain, so that the service life of the transformer is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oil-immersed power transformer, this oil-immersed power transformer improve the radiating effect of transformer radiator piece through the heat-conducting mode of multimedium.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an oil-immersed power transformer comprises a transformer body, wherein a radiator fin is fixedly arranged on the front surface of the transformer body, a water tank is fixedly arranged on the right side of the transformer body, a micro water pump is fixedly arranged on the top of the water tank, the water inlet of the micro water pump is communicated with the inner cavity of the water tank through a water guide pipe, the bottom end of the water guide pipe extends to the position close to the bottom in the water tank, the water outlet of the micro water pump is connected and communicated with one end of the bent pipe, and one end of the bent pipe far away from the micro water pump is wound between each radiator fin in an S shape and then is connected with an inlet of a condenser along the left side and the bottom of the front surface of the transformer body, the back surface of the condenser is fixedly arranged at the right lower corner of the front surface of the transformer body, and the outlet of the condenser is communicated with the inner cavity of the water tank through a return pipe, and the top end of the return pipe is fixedly connected to the bottom of the front surface of the water tank and is communicated with the inner cavity of the water tank.

Preferably, each section of the bent pipe located between the radiator fins is fixedly connected with three radiating pieces with equal distances in the front, and the distances between the left side and the right side of each radiating piece and the radiator fins are equal.

Preferably, the heat sink includes a U-shaped tube, a spherical air bag, and a connection tube.

Preferably, both ends of the U-shaped pipe are located on the same longitudinal axis and fixedly connected to the front face of the bent pipe, the three spherical air bags are respectively fixedly connected to the upper side and the lower side of the left side and the right side of the U-shaped pipe in a group, the front end and the rear end of the connecting pipe are respectively fixedly connected to the front side and the rear side of each two adjacent spherical air bags, air is filled in the spherical air bags, and the inner cavity of the U-shaped pipe is communicated with the inner cavity of the bent pipe.

Preferably, the connecting pipe is including being connecting strip and the cylindrical cavity of cavity form, both ends are connected with the relative one side of per two adjacent spherical gasbags respectively around the connecting strip, the inner chamber of connecting strip and the inner chamber intercommunication of two adjacent spherical gasbags, the cylindrical cavity is seted up in the connecting strip, and is filled with the coolant liquid in the cylindrical cavity.

Preferably, the upper and lower sides of the front surface of each U-shaped bending section of the bending pipe between the radiator fins are fixedly connected with two bending plates in an obliquely symmetrical manner, and the inner curved surfaces of the bending plates face towards the right side.

Compared with the prior art:

the utility model provides an oil-immersed power transformer. The method has the following beneficial effects:

(1) this oil-immersed power transformer, through miniature pump operation with the water in the water tank take out and go into in the bending tube, simultaneously through the special design of bending tube around through the radiator fin, when making the bending tube lead to water, be difficult to the exhaust heat between the adjacent radiator fin and use the air to conduct to the lower bending tube surface of temperature as the medium, the cooling effect of radiator fin has been promoted, simultaneously through the special design of radiating piece, the thermal conduction mode of radiator fin discharge has further been improved, thereby ensured to be discharged easily when being used for high power transformer between the adjacent radiator fin, the cooling effect of radiator fin to the transformer has been improved greatly.

(2) This oil-immersed power transformer through set up the bent plate on the pipe surface of buckling to and the special design of bent plate shape, thereby make the transformer when installing in outdoor, if the air current blows to the transformer from the right side, thereby can reach the forced air cooling effect through the special design of bent plate shape with the leading-in adjacent radiator fin of air current between, can carry out the cooling effect in step to the radiating piece on the pipe surface of buckling simultaneously, improved the cooling effect of radiating piece to the radiator fin when further reducing radiating piece surface temperature.

(3) This oil-immersed power transformer through only using a bending pipe around every radiator fin, in rivers after the while absorbed heat flow into the condenser in cool off and through the back flow row return water tank, can effectively reach the effect of circulation cooling when saving manufacturing cost, reduced the loss of water resource, improved the use feature of environmental protection nature of this transformer.

(4) This oil-immersed power transformer, be heated the thermal expansion and drive the connecting strip inflation through spherical gasbag, and communicate each other between every spherical gasbag through the hollow part that draws big connecting strip at the in-process that expands gradually, make the connecting strip further expand and contact with the radiator fin, carry out heat-conduction cooling to the radiator fin through the coolant liquid in the cylindric intracavity simultaneously, make the mode of connecting strip and radiator fin contact effectively enlarge the cooling range of coolant liquid based on the inflation, thereby further ensure that the heat of gathering between the radiator fin is easily discharged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the heat sink of the present invention;

fig. 3 is a cross-sectional view of the top of the connecting pipe of the present invention.

In the figure: 1 transformer body, 2 radiator fins, 3 water tanks, 4 micro water pumps, 5 bent pipes, 6 radiating pieces, 7 condensers, 8 return pipes, 9 bent plates, 61U-shaped pipes, 62 spherical air bags, 63 connecting pipes, 631 connecting strips and 632 cylindrical cavities.

Detailed Description

Referring to fig. 1-3, the present invention provides a technical solution: an oil-immersed power transformer comprises a transformer body 1, wherein radiator fins 2 are fixedly arranged on the front side of the transformer body 1, a water tank 3 is fixedly arranged on the right side of the transformer body 1, the left side of the water tank 3 is fixedly connected to the right side of the transformer body 1 through bolts, a miniature water pump 4 is fixedly arranged on the top of the water tank 3, a water inlet of the miniature water pump 4 is communicated with an inner cavity of the water tank 3 through a water guide pipe, the bottom of the miniature water pump 4 is fixedly connected to the top of the water tank 3 through bolts, the bottom end of the water guide pipe extends to a position close to the bottom in the water tank 3, a tank cover is sleeved on a water inlet on the front side of the top of the water tank 3, a water outlet of the miniature water pump 4 is connected and communicated with one end of a bending pipe 5, one end of the bending pipe 5 far away from the miniature water pump 4 is S, the connection part of the bent pipe 5 and the condenser 7 is connected through a flange, the front of each section of the bent pipe 5 positioned between the radiator fins 2 is fixedly connected with three radiating pieces 6 at equal intervals, the distances between the left side and the right side of each radiating piece 6 are equal to those between the radiator fins 2, the back of the condenser 7 is fixedly arranged at the right lower corner of the front of the transformer body 1, the outlet of the condenser 7 is communicated with the inner cavity of the water tank 3 through a return pipe 8, the back of the condenser 7 is fixedly connected at the right lower corner of the front of the transformer body 1 through bolts, the concrete model of the condenser 7 is FNA-0.9/4.0, the top end of the return pipe 8 is welded at the bottom of the front of the water tank 3 and is communicated with the inner cavity of the water tank 3, the upper side and the lower side of the front of each U-shaped bent section of the bent pipe 5 positioned between the radiator, by arranging the bending plate 9 on the surface of the bending pipe 5 and the special design of the shape of the bending plate 9, when the transformer is installed outdoors, if air flow blows to the transformer from the right side, the air flow can be guided into the space between the adjacent radiator fins 2 through the special design of the shape of the bending plate 9 to achieve the air cooling effect, and simultaneously the synchronous cooling effect can be performed on the radiating piece 6 on the surface of the bending pipe 5, so that the cooling effect of the radiating piece 6 on the radiator fins 2 is improved while the surface temperature of the radiating piece 6 is further reduced, water in the water tank 3 is pumped out and discharged into the bending pipe 5 through the operation of the micro-water pump 4, and meanwhile, through the special design of the bending pipe 5 around the radiator fins 2, when the bending pipe 5 is filled with water, the heat which is difficult to be discharged between the adjacent radiator fins 2 is conducted to the surface of the bending pipe 5 with air as a medium, meanwhile, through the special design of the heat dissipation part 6, the conduction mode of heat discharged by the heat dissipation pieces 2 is further improved, so that the heat accumulated between the adjacent heat dissipation pieces 2 when the transformer is used for a high-power transformer is easily discharged, the cooling effect of the heat dissipation pieces 2 on the transformer is greatly improved, the heat dissipation device winds each heat dissipation piece 2 by using only one bending pipe 5, meanwhile, water flow after absorbing heat flows into the condenser 7 to be cooled and is discharged back into the water tank 3 through the return pipe 8, the effect of circulating cooling can be effectively achieved while the production cost is saved, the loss of water resources is reduced, and the environmental protection performance of the transformer is improved.

The heat dissipation member 6 comprises a U-shaped pipe 61, spherical air bags 62 and a connecting pipe 63, wherein two ends of the U-shaped pipe 61 are located on the same longitudinal axis and are fixedly connected to the front surface of the bent pipe 5, the spherical air bags 62 are three and are respectively bonded to the upper side and the lower side of the left side and the right side of the U-shaped pipe 61, the front end and the rear end of the connecting pipe 63 are respectively bonded to the front side and the rear side of each two adjacent spherical air bags 62, air is filled in the spherical air bags 62, and the inner cavity of the U-.

The connecting pipe 63 comprises a hollow connecting strip 631 and a cylindrical cavity 632, the front end and the rear end of the connecting strip 631 are respectively bonded with the opposite sides of each two adjacent spherical airbags 62, the inner cavity of the connecting strip 631 is communicated with the inner cavities of the two adjacent spherical airbags 62, the cylindrical cavity 632 is arranged in the connecting strip 631, the cylindrical cavity 632 is filled with cooling liquid, the spherical air bags 62 are heated to expand and drive the connecting strips 631 to expand, and each spherical air bag 62 is communicated with each other by enlarging the hollow part of the connecting strips 631 in the process of gradual expansion, so that the connecting strips 631 are further expanded and are in contact with the radiator fins 2, meanwhile, the heat conduction cooling is performed on the radiator fins 2 through the cooling liquid in the cylindrical cavity 632, and the cooling range of the cooling liquid can be effectively expanded in a manner that the connecting strip 631 is in contact with the radiator fins 2 based on expansion, so that the heat accumulated between the radiator fins 2 is further ensured to be easily discharged.

This oil-immersed power transformer during operation, through opening the case lid to water tank 3 internal water injection, operate through miniature pump 4 in with water tank 3 internal water suction via the aqueduct in the bent pipe 5, the bent pipe 5 surface absorption that is located between adjacent radiator fin 2 is via radiator fin 2 exhaust heat, and absorb high temperature and carry out cooling treatment after flowing into condenser 7 through the water that flows, again via back flow 8 arrange back to in the water tank 3, the water in the bent pipe 5 flows into in the U-shaped pipe 61 further absorbs via radiator fin 2 exhaust heat, spherical gasbag 62 drives connecting strip 631 inflation after the thermal expansion, the coolant liquid in the expansion back cylinder chamber 632 contacts and absorbs the heat with radiator fin 2 with the connecting strip outer wall as the medium, reach the cooling effect to transformer 631.

In conclusion, the oil-immersed power transformer can be obtained, the water in the water tank 3 is pumped out and discharged into the bent pipe 5 through the operation of the micro water pump 4, and meanwhile, the bent pipe 5 is wound through the heat radiator fins 2 through the special design of the bent pipe 5, so that when the bent pipe 5 is used for water flowing, heat which is difficult to discharge between the adjacent heat radiator fins 2 is conducted to the surface of the bent pipe 5 with lower temperature by taking air as a medium, the cooling effect of the heat radiator fins 2 is promoted, meanwhile, through the special design of the heat radiating piece 6, the conduction mode of the heat discharged by the heat radiator fins 2 is further improved, the heat accumulated between the adjacent heat radiator fins 2 is ensured to be easily discharged when the oil-immersed power transformer is used, and the cooling effect of the heat radiator fins 2.

Simultaneously, through setting up crooked board 9 on 5 surfaces of the pipe that buckles to and the special design of crooked board 9 shapes, thereby make the transformer when installing in outdoor, if the air current blows to the transformer from the right side, thereby can reach the forced air cooling effect through the special design of crooked board 9 shapes with the leading-in air current between the adjacent radiator fin 2, can carry out the cooling effect in step to the radiating piece 6 on 5 surfaces of pipe that buckles simultaneously, improved the cooling effect of radiating piece 6 to radiator fin 2 when further reducing the 6 surface temperature of radiating piece.

Claims

1. An oil-immersed power transformer, includes transformer body (1), its characterized in that: the front fixed mounting of transformer body (1) has radiator fin (2), and the right side fixed mounting of transformer body (1) has water tank (3), the top fixed mounting of water tank (3) has miniature pump (4), and the water inlet of miniature pump (4) passes through the inner chamber intercommunication of aqueduct and water tank (3), the bottom of aqueduct extends to the position that is close to the bottom in water tank (3), the delivery port of miniature pump (4) is connected and is linked together with the one end of buckling pipe (5), and the one end that miniature pump (4) were kept away from to buckling pipe (5) is the S-shaped and winds after between every radiator fin (2) along the positive left side of transformer body (1) and the entry linkage of bottom and condenser (7), the back fixed mounting of condenser (7) is in the positive lower right corner of transformer body (1), and the outlet of the condenser (7) is communicated with the inner cavity of the water tank (3) through a return pipe (8), and the top end of the return pipe (8) is fixedly connected to the bottom of the front surface of the water tank (3) and is communicated with the inner cavity of the water tank (3).

2. Oil filled power transformer according to claim 1, characterized in that: each section that pipe (5) of buckling is located between radiator fin (2) openly equal equidistance fixedly connected with three radiating piece (6), and the distance between three radiating piece (6) left and right sides and radiator fin (2) is equal.

3. Oil filled power transformer according to claim 2, characterized in that: the heat dissipation member (6) comprises a U-shaped pipe (61), a spherical air bag (62) and a connecting pipe (63).

4. Oil filled power transformer according to claim 3, characterized in that: the both ends of U-shaped pipe (61) all are located same axis of ordinates and fixed connection is in the front of pipe (5) of buckling, spherical gasbag (62) are three for a set of upper and lower both sides of fixed connection in U-shaped pipe (61) left and right sides respectively, the front and back both ends of connecting pipe (63) are fixed connection in the front and back both sides of per two adjacent spherical gasbag (62) respectively, spherical gasbag (62) intussuseption is filled with the air, the inner chamber of U-shaped pipe (61) and the inner chamber intercommunication of pipe (5) of buckling.

5. Oil filled power transformer according to claim 4, characterized in that: connecting pipe (63) are including connecting strip (631) and the cylindrical cavity (632) that is the cavity form, both ends are connected with the relative one side of per two adjacent spherical gasbag (62) respectively around connecting strip (631), the inner chamber of connecting strip (631) and the inner chamber intercommunication of two adjacent spherical gasbag (62), set up in connecting strip (631) cylindrical cavity (632), and fill in cylindrical cavity (632) and have the coolant liquid.

6. Oil filled power transformer according to claim 1, characterized in that: the upper side and the lower side of the front surface of each U-shaped bending section of the bending pipe (5) between the radiator fins (2) are fixedly connected with two bending plates (9) in an oblique symmetrical mode, and the inner curved surfaces of the bending plates (9) face towards the right side.