CN113488313A

CN113488313A - Oil-immersed transformer

Info

Publication number: CN113488313A
Application number: CN202110577492.0A
Authority: CN
Inventors: 李蒙蒙; 张珊; 张会; 苏超; 李宁
Original assignee: Jiangsu Tianhua Transformer Co ltd
Current assignee: Jiangsu Tianhua Transformer Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-10-08

Abstract

The invention discloses an oil-immersed transformer which comprises an oil-immersed transformer main body, a convex rod, a plug plate, a heat dissipation mechanism and a second oil pump, wherein a support frame is connected to the left side of the oil-immersed transformer main body in a clamping mode, the heat dissipation mechanism is fixed to the front side and the rear side of a heat conduction frame, a first oil pump is fixed to the inner bottom of an oil storage barrel, a first connecting pipeline penetrates through the right side of the oil storage barrel and is connected with an oil conveying pipeline through a pipe hoop, the second oil pump is fixed to the left side of the inner bottom of the oil-immersed transformer main body, and a second connecting pipeline penetrates through the left side of the oil-immersed transformer main body and is connected with a return pipeline through the pipe hoop. This oil-immersed transformer, oil are at the in-process that oil-immersed transformer main part and oil storage bucket inner loop flow, and the heat of oil storage bucket inner oil can be successively conducted to heat conduction frame and heat conduction piece on, and radiator fan bloies to the heat conduction piece this moment, makes oil can obtain effectual cooling heat dissipation and handles to make oil-immersed transformer main part obtain the cooling heat dissipation that lasts and handle.

Description

Oil-immersed transformer

Technical Field

The invention relates to the technical field of oil-immersed transformers, in particular to an oil-immersed transformer.

Background

The oil immersed transformer is a novel high-performance transformer with more reasonable structure and better performance by using oil as a main insulation means of the transformer and using the oil as a cooling medium, the three-dimensional wound iron core has three core columns which are arranged in an equilateral triangle, no air gap exists in a magnetic circuit, the winding is tighter, the three magnetic circuits have the same length and are shortest, the cross section area of the core column of the iron core is closer to a circle, therefore, the performance is further improved, the loss is reduced, the noise is reduced, the three terms are balanced, the third harmonic component is reduced, the product is more suitable for transformation of power grids of urban and rural and industrial and mining enterprises, is more suitable for combined transformers and transformers for pre-installed substations, is inconvenient to assemble and disassemble for the existing oil-immersed transformers, is inconvenient to filter oil in the process of using the oil as a cooling medium, and can be doped with impurities in the recycling process.

Disclosure of Invention

The invention aims to provide an oil-immersed transformer, which solves the problems that the conventional oil-immersed transformer in the background art is inconvenient to assemble and disassemble, the oil is inconvenient to filter in the process of using the oil as a cooling medium, and impurities are doped in the process of recycling the oil.

In order to achieve the purpose, the invention provides the following technical scheme: an oil-immersed transformer comprises an oil-immersed transformer main body, a convex rod, a plug plate, a heat dissipation mechanism and a second oil pump,

the left side and the right side of the bottom of the oil-immersed transformer main body are both fixed with mounting frames, the top of the oil-immersed transformer main body is fixed with a cover plate through first fixing bolts, the left side of the oil-immersed transformer main body is connected with a support frame in a clamping mode, an oil storage barrel is fixed at the top of the support frame, and a top cover is fixed at the top of the oil storage barrel through a second fastener;

the heat dissipation mechanism is fixed on the front side and the rear side of the heat conduction frame, the heat conduction frame is fixedly penetrated on the oil storage barrel, meanwhile, the bottom of the oil storage barrel is in threaded connection with a hole plug, a first oil pump is fixed at the inner bottom of the oil storage barrel, a first connecting pipeline is fixed on the right side of the first oil pump, the first connecting pipeline penetrates through the right side of the oil storage barrel and is connected with an oil pipeline through a pipe hoop, and the left side of the oil pipeline penetrating through the oil-immersed transformer main body is connected to the right inner wall of the oil-immersed transformer main body in a clamping mode;

the second oil pump is fixed on the left side of the bottom in the oil-immersed transformer body, a second connecting pipeline is fixed at the top of the oil-immersed transformer body, the second connecting pipeline penetrates through the left side of the oil-immersed transformer body and is connected with the return pipeline through a pipe hoop, and the return pipeline penetrates through the top of the top cover.

Preferably, the protruding rod is fixed on the left end face of the oil-immersed transformer main body, and the right side of the protruding rod penetrating through the supporting frame is in threaded connection with a first fastening piece.

Preferably, the second fastening pieces are equidistantly distributed on the left side and the right side of the top of the oil storage barrel.

Preferably, the plug plate penetrates through the top cover, and the plug plate is fixed on the top cover through a second fixing bolt.

Preferably, the right side of the plug plate is provided with a filter box, and the filter box is fixed on the inner side of the top cover.

Preferably, the heat dissipation mechanism comprises a heat conducting fin, a bearing frame, a heat dissipation fan and a filter screen, wherein the heat conducting fin is fixed on the front side and the rear side of the heat conducting frame, the bearing frame is fixed on the outer side of the heat conducting fin, the heat dissipation fan and the filter screen are fixed on the inner side of the bearing frame, and the filter screen is located on the outer side of the heat dissipation fan.

Preferably, the heat-conducting fins are distributed between the heat-conducting frame and the bearing frames at equal intervals, and each bearing frame is provided with four cooling fans.

Preferably, the right end of the oil pipeline is clamped on a fixing frame, and the fixing frame is fixed on the right inner wall of the oil-immersed transformer main body.

Preferably, the end of the return line is located inside the filter cassette.

Compared with the prior art, the invention has the beneficial effects that: the oil-immersed transformer comprises a plurality of oil-immersed transformers,

(1) the oil-immersed transformer comprises an oil-immersed transformer body, a mounting frame, a convex rod, a support frame, a first fastener, a first connecting pipeline, an oil pipeline, a pipe hoop, a second connecting pipeline and a backflow pipeline, wherein the oil-immersed transformer body can be fixed at a required place under the action of the mounting frame and an external fixing bolt, the installation is convenient, the support frame can be clamped on the convex rod and then the first fastener can be screwed down to tightly fix the support frame, and then the first connecting pipeline and the oil pipeline as well as the second connecting pipeline and the backflow pipeline can be connected and fixed together by utilizing the pipe hoop, so that the assembly and disassembly are convenient;

(2) the oil-immersed transformer is provided with an oil-immersed transformer main body, an oil storage barrel, a top cover, a first oil pump, a first connecting pipeline, an oil conveying pipeline, a second oil pump, a second connecting pipeline and a return pipeline, oil can be filled into the oil storage barrel after the top cover is opened, the top cover is fixedly covered after the oil is filled, then the oil in the oil storage barrel can flow into the oil-immersed transformer main body through the first connecting pipeline and the oil conveying pipeline under the action of the first oil pump, and meanwhile the oil in the oil-immersed transformer main body can flow back into the oil storage barrel through the second connecting pipeline and the return pipeline under the action of the second oil pump, so that the oil can circularly flow in the oil-immersed transformer main body and the oil storage barrel;

(3) the oil-immersed transformer comprises an oil-immersed transformer main body, an oil storage barrel, a heat conduction frame, heat conduction fins and a cooling fan, wherein in the process of circulating and flowing oil in the oil-immersed transformer main body and the oil storage barrel, the heat of the oil in the oil storage barrel can be sequentially conducted to the heat conduction frame and the heat conduction fins, and the cooling fan blows air towards the heat conduction fins, so that the oil can be effectively cooled and cooled, and the oil-immersed transformer main body is continuously cooled and cooled;

(4) be provided with oil storage bucket, cock board, filter box and backflow pipeline, when oil flowed back to in the oil storage bucket through backflow pipeline, the filter box can carry out filtration treatment to oil, conveniently separates out the impurity in the oil, has used up the device and can clear up the impurity in the filter box after pulling down the cock board.

Drawings

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

FIG. 2 is a schematic view of the front view of the present invention;

fig. 3 is a schematic view of a connection structure of an oil-immersed transformer main body, a mounting bracket, a cover plate, a first fixing bolt, a convex rod, a support frame, a first fastener, a first connecting pipeline, an oil pipeline, a pipe hoop, a second connecting pipeline and a return pipeline according to the present invention;

FIG. 4 is a schematic left-side sectional view of the present invention;

FIG. 5 is a schematic top view of the present invention;

FIG. 6 is a schematic view of the connection structure of the oil-immersed transformer main body, the oil pipeline and the fixing frame according to the present invention;

FIG. 7 is a schematic view of a connection structure of a carrier frame and a heat dissipation fan according to the present invention;

FIG. 8 is an enlarged view of the structure at A in FIG. 4 according to the present invention.

In the figure: 1. oil-immersed transformer main part, 2, the mounting bracket, 3, the apron, 4, first fixing bolt, 5, the projecting pole, 6, the support frame, 7, first fastener, 8, the oil storage bucket, 9, the top cap, 10, the second fastener, 11, the cock board, 12, second fixing bolt, 13, the filter cartridge, 14, the heat conduction frame, 15, heat dissipation mechanism, 1501, the conducting strip, 1502, the bearer frame, 1503, radiator fan, 1504, the filter screen, 16, the hole stopper, 17, first oil pump, 18, first connecting tube, 19, oil pipeline, 20, the ferrule, 21, the mount, 22, the second oil pump, 23, the second connecting tube, 24, the backflow pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: an oil-immersed transformer is disclosed, as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, mounting frames 2 are fixed on the left side and the right side of the bottom of an oil-immersed transformer main body 1, a cover plate 3 is fixed on the top of the oil-immersed transformer main body 1 through a first fixing bolt 4, a support frame 6 is connected with the left side of the oil-immersed transformer main body 1 in a clamping manner, an oil storage barrel 8 is fixed on the top of the support frame 6, a top cover 9 is fixed on the top of the oil storage barrel 8 through a second fastener 10, a convex rod 5 is fixed on the left end face of the oil-immersed transformer main body 1, a first fastener 7 is connected with the convex rod 5 through the right side of the support frame 6 in a threaded manner, the first fastener 7 can be screwed after the support frame 6 is clamped on the convex rod 5, so that the support frame 6 is abutted against and fixed on the oil-immersed transformer main body 1, assembly and disassembly are convenient, the second fasteners 10 are equidistantly distributed on the left side and the right side of the top of the oil-immersed transformer main body 8, the oil can be led into the oil storage barrel 8 after the second fastening piece 10 is unscrewed and the top cover 9 is detached, the oil can be fixed on the top cover 9 by the second fastening piece 10 after the oil is led out and the top cover 9 is placed, the plug plate 11 penetrates through the top cover 9, the plug plate 11 is fixed on the top cover 9 through the second fixing bolt 12, the filter box 13 has a filtering effect on the oil flowing back into the oil storage barrel 8, after the device is used, impurities in the filter box 13 can be cleaned after the plug plate 11 is detached by unscrewing the second fixing bolt 12, the filter box 13 is arranged on the right side of the plug plate 11, the filter box 13 is fixed on the inner side of the top cover 9, when the oil in the oil-immersed transformer main body 1 flows back into the oil storage barrel 8 through the second connecting pipeline 23 and the backflow pipeline 24 under the effect of the second oil pump 22, the filter box 13 has a filtering effect on the oil, and the impurities in the oil can be conveniently separated.

As shown in fig. 1, 2, 3, 4, 5 and 6, the heat dissipation mechanism 15 is fixed on the front and rear sides of the heat conduction frame 14, the heat conduction frame 14 is fixed on the oil storage tank 8 in a penetrating manner, the bottom of the oil storage tank 8 is connected with the hole plug 16 by a thread, the heat dissipation mechanism 15 includes a heat conduction sheet 1501, a bearing frame 1502, a heat dissipation fan 1503 and a filter screen 1504, the heat conduction sheet 1501 is fixed on the front and rear sides of the heat conduction frame 14, the bearing frame 1502 is fixed on the outer side of the heat conduction sheet 1501, the heat dissipation fan 1503 and the filter screen 1504 are fixed on the inner side of the bearing frame 1502, the filter screen 1504 is located on the outer side of the heat dissipation fan 1503, during the oil flowing process in the oil storage tank 8, the heat dissipation fan 1503 blows air to the heat conduction sheet 1501, so that the oil can be effectively cooled and dissipated, the oil immersed transformer body 1 can be continuously cooled and dissipated, the outside air can be filtered by the filter screen 1504 before entering the bearing frame 1502, the impurities are prevented from entering the carrying frame 1502 to affect the normal operation of the heat dissipation fans 1503, the heat conduction fins 1501 are equidistantly distributed between the heat conduction frame 14 and the carrying frame 1502, and each carrying frame 1502 is provided with four heat dissipation fans 1503, so that the heat conduction effect is better due to the equidistantly distributed heat conduction fins 1501, and the heat dissipation effect is better due to the four heat dissipation fans 1503 on the carrying frame 1502.

According to the drawings of fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 7 and fig. 8, a first oil pump 17 is fixed at the inner bottom of an oil storage barrel 8, a first connecting pipeline 18 is fixed at the right side of the first oil pump 17, the first connecting pipeline 18 penetrates through the right side of the oil storage barrel 8 and is connected with an oil pipeline 19 through a pipe hoop 20, the oil pipeline 19 penetrates through the left side of the oil-immersed transformer body 1 and is connected to the right inner wall of the oil-immersed transformer body 1 in a clamping manner, the right end of the oil pipeline 19 is clamped on a fixing frame 21, the fixing frame 21 is fixed on the right inner wall of the oil-immersed transformer body 1, the fixing frame 21 plays a role of limiting and supporting the oil pipeline 19, so that the oil pipeline 19 can be more stably placed in the oil-immersed transformer body 1, a second oil pump 22 is fixed at the left side of the inner bottom of the oil-immersed transformer body 1, and a second connecting pipeline 23 is fixed at the top of the oil-immersed transformer body 1, the second connecting pipeline 23 penetrates through the left side of the oil-immersed transformer body 1 and is connected with the return pipeline 24 through the pipe hoop 20, and the return pipeline 24 penetrates through the top of the top cover 9.

The working principle of the embodiment is as follows: when the oil-immersed transformer is used, firstly, the device is fixed at a required place by using the mounting frame 2 and an external fixing bolt, the support frame 6 is clamped on the convex rod 5, then the first fastening piece 7 is screwed, the support frame 6 is tightly fixed, then the first connecting pipeline 18 and the oil pipeline 19 as well as the second connecting pipeline 23 and the return pipeline 24 are connected and fixed together by using the pipe hoop 20, so that the assembly operation of the device is completed, the external power supply is connected, the oil can be introduced into the oil storage barrel 8 after the top cover 9 is detached by screwing the second fastening piece 10, the top cover 9 is covered and put after the oil is introduced, the top cover 9 is tightly fixed by using the second fastening piece 10, the first oil pump 17 is started, the oil in the oil storage barrel 8 flows into the oil-immersed transformer main body 1 through the first connecting pipeline 18 and the oil pipeline 19, the second oil pump 22 is started at the same time, the oil in the oil-immersed transformer main body 1 flows back into the oil storage barrel 8 through the second connecting pipeline 23 and the return pipeline 24, the oil circularly flows in the oil-immersed transformer main body 1 and the oil storage barrel 8, the heat on the oil can be sequentially conducted to the heat conduction frame 14 and the heat conduction sheet 1501 in the process of flowing the oil in the oil storage barrel 8, the heat dissipation fan 1503 blows air against the heat conduction sheet 1501 after being started, the oil is effectively cooled and dissipated, so that the oil-immersed transformer main body 1 is continuously cooled and dissipated, the external air can be filtered under the action of the filter screen 1504 before entering the bearing frame 1502, the influence of impurities entering the bearing frame 1502 on the normal operation of the heat dissipation fan 1503 is avoided, when the oil flows back into the oil storage barrel 8, the filter box 13 filters the oil, the impurities in the oil can be conveniently separated, the impurities in the filter box 13 can be cleaned after the device is used and the plug plate 11 is detached by unscrewing the second fixing bolt 12, the oil in the oil storage barrel 8 can be discharged after the hole plug 16 is unscrewed, and those not described in detail in this specification are within the skill of the art.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for simplicity of description only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be considered limiting of the claimed invention.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an oil-immersed transformer, includes oil-immersed transformer main part (1), nose bar (5), cock board (11), heat dissipation mechanism (15) and second oil pump (22), its characterized in that:

the left side and the right side of the bottom of the oil-immersed transformer main body (1) are both fixed with mounting frames (2), the top of the oil-immersed transformer main body (1) is fixed with a cover plate (3) through a first fixing bolt (4), the left side of the oil-immersed transformer main body (1) is connected with a support frame (6) in a clamping mode, the top of the support frame (6) is fixed with an oil storage barrel (8), and meanwhile the top of the oil storage barrel (8) is fixed with a top cover (9) through a second fastener (10);

the oil-immersed transformer is characterized in that the heat dissipation mechanisms (15) are fixed on the front side and the rear side of the heat conduction frame (14), the heat conduction frame (14) penetrates through and is fixed on the oil storage barrel (8), meanwhile, the bottom of the oil storage barrel (8) is in threaded connection with a hole plug (16), a first oil pump (17) is fixed at the inner bottom of the oil storage barrel (8), a first connecting pipeline (18) is fixed on the right side of the first oil pump (17), the first connecting pipeline (18) penetrates through the right side of the oil storage barrel (8) and is connected with an oil pipeline (19) through a pipe hoop (20), and the oil pipeline (19) penetrates through the left side of the oil-immersed transformer main body (1) and is connected to the right inner wall of the oil-immersed transformer main body (1) in a clamping mode;

the second oil pump (22) is fixed on the left side of the bottom in the oil-immersed transformer main body (1), a second connecting pipeline (23) is fixed on the top of the oil-immersed transformer main body (1), the second connecting pipeline (23) penetrates through the left side of the oil-immersed transformer main body (1) and is connected with a backflow pipeline (24) through a pipe hoop (20), and the backflow pipeline (24) penetrates through the top of the top cover (9).

2. An oil filled transformer according to claim 1, characterized in that: the protruding rod (5) is fixed on the left end face of the oil-immersed transformer main body (1), and the right side of the protruding rod (5) penetrating through the supporting frame (6) is in threaded connection with a first fastening piece (7).

3. An oil filled transformer according to claim 1, characterized in that: the second fasteners (10) are distributed on the left side and the right side of the top of the oil storage barrel (8) at equal intervals.

4. An oil filled transformer according to claim 1, characterized in that: the plug plate (11) penetrates through the top cover (9), and the plug plate (11) is fixed on the top cover (9) through a second fixing bolt (12).

5. An oil filled transformer according to claim 4, characterized in that: the right side of the plug plate (11) is provided with a filter box (13), and the filter box (13) is fixed on the inner side of the top cover (9).

6. An oil filled transformer according to claim 1, characterized in that: the heat dissipation mechanism (15) comprises a heat conducting sheet (1501), a bearing frame (1502), a heat dissipation fan (1503) and a filter screen (1504), wherein the heat conducting sheet (1501) is fixed on the front side and the rear side of the heat conducting frame (14), the bearing frame (1502) is fixed on the outer side of the heat conducting sheet (1501), the heat dissipation fan (1503) and the filter screen (1504) are fixed on the inner side of the bearing frame (1502), and the filter screen (1504) is located on the outer side of the heat dissipation fan (1503).

7. An oil filled transformer according to claim 6, characterized in that: the heat conducting fins (1501) are distributed between the heat conducting frame (14) and the bearing frames (1502) at equal intervals, and four cooling fans (1503) are arranged on each bearing frame (1502).

8. An oil filled transformer according to claim 1, characterized in that: the right end of the oil pipeline (19) is clamped on the fixing frame (21), and the fixing frame (21) is fixed on the right inner wall of the oil-immersed transformer main body (1).

9. An oil filled transformer according to claim 1, characterized in that: the end of the return pipe (24) is located inside the filter cassette (13).