Oil-immersed transformer
By designing external air-cooled cooling components and circulating and flowing thermal oil system in oil-immersed transformers, the problem of poor heat dissipation effect of existing oil-immersed transformers is solved, and more efficient heat dissipation effect and continuous working ability are achieved.
Patent Information
- Application Number
- CN202420845466.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The existing oil-immersed transformers have poor heat dissipation effects, resulting in local high temperatures and oil vaporization to produce gas isolation layers, further reducing the heat dissipation effect.
An oil-immersed transformer is designed, using an external air-cooled cooling component, which communicates with the inside of the transformer body through the heat dissipation column, and circulates the thermal oil and liquid under the control of the conveying chamber group, so that the high-temperature liquid flows into the heat dissipation. The inside of the guide column is in full contact with the external ambient air to improve the heat dissipation effect.
The thermally conductive oil that flows dynamically circulating fully contacts the external air, significantly improving the heat dissipation effect, avoiding local high temperatures and oil vaporization problems, and ensuring the continuous working ability of the transformer.
Smart Images
Figure CN222440303U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to an oil-immersed transformer. Background Art
[0002] As one of the main power transmission and transformation equipment in the substation, the transformer has a core position in the substation. It can also be said that the transformer is the heart of the substation. The operating status of the transformer directly affects the entire substation. Among them, large power transformers are mostly oil-immersed transformers. The characteristic of oil-immersed transformers is that they use insulating oil as the heat dissipation and insulation medium of the transformer windings and cores. The existing oil-immersed transformers mainly inject heat-conducting oil into the transformer, and use the oil to improve the heat conduction effect with the fins. Since the oil is in a static state and is located inside the transformer, the cooling effect through the heat dissipation fins is poor. The local high temperature inside the transformer is shallow. The surface heat-conducting oil vaporizes to produce a gas insulation layer, which further leads to a reduction in the heat dissipation effect of the transformer. In view of this, the existing problems are studied and improved, and an oil-immersed transformer is provided to solve the current problems. The purpose is to achieve the purpose of solving problems and improving practical value through this technology. Utility Model Content
[0003] The utility model aims to solve one of the technical problems existing in the prior art or related technology.
[0004] To this end, the technical solution adopted by the utility model is: an oil-immersed transformer, comprising: a transformer body, a heat dissipation guide column and a conveying chamber group, the upper and lower sections of the heat dissipation guide column are respectively fixedly connected with a circulation chamber and a reflux chamber, the surfaces of the circulation chamber and the reflux chamber are provided with flange pipe heads connected with the transformer body, the conveying chamber group comprises a compartment layer, a driving motor and a conveying assembly fixed to the surface of the compartment layer, the compartment layer is fixedly installed on the inner side of the circulation chamber and a top cover is provided on the top surface, the output end of the driving motor is fixedly connected with a shaft rod, the conveying assembly comprises a first rotating bar, an introduction seat and an introduction seat fixed to the surface of the compartment layer, a pump box is fixedly installed on the surface of the introduction seat, the first rotating bar and the first rotating bar are both located between the pump box and the introduction seat, and the end of the shaft rod passes through the pump box and is fixedly connected to the surface of the second rotating bar.
[0005] In a preferred example, the utility model can be further configured as follows: the interior of the transformer body and the heat dissipation guide pillars are filled with heat-conducting oil, and the oil level is lower than the horizontal height of the circulation chamber.
[0006] In a preferred example, the utility model can be further configured as follows: a one-way valve is provided inside the flange pipe head, the liquid flow directions inside the flange pipe heads at the end of the circulation chamber and the reflux chamber are opposite, and one end of the flange pipe head on the surface of the circulation chamber is connected to a nozzle located inside the transformer body.
[0007] In a preferred example, the utility model can be further configured as follows: a plurality of cutting guide holes are provided on the surface of the pump box, and the end of the flange pipe head is connected with the inner cavity of the top sealing cover and the compartment layer for leading out the oil between the compartment layer and the top sealing cover.
[0008] In a preferred example, the utility model can be further configured as follows: a through hole located in the axial center area of the introduction seat is opened on the surface of the introduction seat for introducing oil between the bottom surface of the partition layer and the circulation cavity.
[0009] In a preferred example, the utility model can be further configured as follows: the first rotating bar and the second rotating bar are in the shape of a planar spiral bar, one end of the shaft is provided with a pin head deviating from the axis of the driving motor, and the surface of the pin head is fixedly connected to the surface of the second rotating bar, and the first rotating bar is fixedly installed on the surface of the guide seat.
[0010] In a preferred example, the utility model can be further configured as follows: the surfaces of the first rotating strip and the second rotating strip are in sliding contact with the surfaces of the pump box and the introduction seat respectively.
[0011] The beneficial effects achieved by the utility model are:
[0012] 1. In the utility model, an external air-cooling component is provided, the heat dissipation guide column is connected with the inside of the transformer body, and the heat transfer oil inside the transformer body and the heat dissipation guide column is circulated under the control of the conveying cavity group, so that the high-temperature liquid flows into the heat dissipation guide column and is fully in contact with the external ambient air, thereby improving the heat dissipation effect.
[0013] 2. In the utility model, a driving motor is used to drive the second rotating bar and the pump box to eccentrically swing, and the pressure difference is generated by the deformation cavity between the second rotating bar and the first rotating bar to realize oil transportation, thereby ensuring the dynamic movement of the oil, thereby avoiding the local high temperature phenomenon of the oil near the electronic devices inside the transformer body. The pumping method of the conveying component is more energy-saving and suitable for continuous work. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;
[0015] Figure 2 This is a schematic diagram of the heat dissipation guide column installation structure of an embodiment of the utility model;
[0016] Figure 3 This is a schematic diagram of the exploded structure of a delivery chamber assembly according to an embodiment of the utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the first rotating bar and the second rotating bar according to an embodiment of the utility model.
[0018] Reference numerals:
[0019] 100. Transformer body;
[0020] 200, heat dissipation guide column; 210, circulation cavity; 220, reflux cavity; 211, flange pipe head;
[0021] 300, conveying chamber group; 310, compartment layer; 320, drive motor; 330, conveying assembly; 311, top cover; 321, shaft; 331, pump box; 332, first rotating bar; 333, second rotating bar; 334, introduction seat. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.
[0023] An oil-immersed transformer provided by some embodiments of the utility model is described below in conjunction with the accompanying drawings.
[0024] Combination Figure 1-4 As shown, the utility model provides an oil-immersed transformer, comprising: a transformer body 100, a heat dissipation guide column 200 and a conveying cavity group 300, wherein the upper and lower sections of the heat dissipation guide column 200 are respectively fixedly connected with a circulation cavity 210 and a reflux cavity 220, and the surfaces of the circulation cavity 210 and the reflux cavity 220 are both provided with a flange pipe head 211 connected to the transformer body 100, and the conveying cavity group 300 comprises a cavity layer 310, a driving motor 320 and a conveying assembly 330 fixed to the surface of the cavity layer 310, and the cavity layer 310 is fixedly installed A top cover 311 is provided on the inner side and top surface of the circulation chamber 210, and an output end of the driving motor 320 is fixedly connected to a shaft rod 321, and the conveying assembly 330 includes a first rotating bar 332, an introduction seat 334 and an introduction seat 334 fixed to the surface of the compartment layer 310, a pump box 331 is fixedly installed on the surface of the introduction seat 334, the first rotating bar 332 and the first rotating bar 332 are both located between the pump box 331 and the introduction seat 334, and an end of the shaft rod 321 passes through the pump box 331 and is fixedly connected to the surface of the second rotating bar 333.
[0025] In this embodiment, the interior of the transformer body 100 and the heat dissipation guide pillars 200 are filled with heat-conducting oil, and the oil level is lower than the level of the circulation chamber 210 .
[0026] In this embodiment, a one-way valve is provided inside the flange pipe head 211, and the liquid flow directions inside the flange pipe head 211 at the end of the circulation chamber 210 and the reflux chamber 220 are opposite, and one end of the flange pipe head 211 on the surface of the circulation chamber 210 is connected to a nozzle located inside the transformer body 100.
[0027] Specifically, a nozzle structure is used to perform oil diffusion spraying to improve the heat dissipation uniformity of the electronic components inside the transformer body 100 .
[0028] In this embodiment, a plurality of cutting guide holes are provided on the surface of the pump box 331 , and the end of the flange pipe head 211 is connected to the inner cavity of the top cover 311 and the compartment layer 310 for the oil to be discharged between the compartment layer 310 and the top cover 311 .
[0029] Furthermore, a through hole is provided on the surface of the introduction seat 334 in the axial region of the introduction seat 334 for introducing oil between the bottom surface of the partition layer 310 and the circulation chamber 210 .
[0030] Specifically, the oil enters between the circulation chamber 210 and the compartment layer 310 through the heat dissipation guide column 200, and is sent between the compartment layer 310 and the top cover 311 under the action of the first rotating bar 332 and the second rotating bar 333 through the operation of the conveying component 330, so as to perform oil boosting pumping.
[0031] In this embodiment, the first rotating bar 332 and the second rotating bar 333 are in the shape of planar spiral bars, one end of the shaft 321 is provided with a pin head deviating from the axis of the driving motor 320, and the surface of the pin head is fixedly connected to the surface of the second rotating bar 333, and the first rotating bar 332 is fixedly installed on the surface of the introduction seat 334.
[0032] In this embodiment, the surfaces of the first rotating bar 332 and the second rotating bar 333 are in sliding contact with the surfaces of the pump box 331 and the introduction seat 334 respectively.
[0033] The working principle and use process of this utility model:
[0034] When the transformer body 100 is in use, the second rotating bar 333 is driven by the driving motor 320 to swing eccentrically, so that the second rotating bar 333 and the first rotating bar 332 move relative to each other, and a continuously changing cavity is formed inside the second rotating bar 333 and the first rotating bar 332. The increased deformation of the cavity at the axis of the second rotating bar 333 and the first rotating bar 332 is used to introduce the upward movement of the liquid flow inside the circulation cavity 210 from the bottom surface of the compartment layer 310, and is led out through the through hole on the surface of the pump box 331, so that the oil inside the transformer body 100 enters the heat dissipation guide column 200 through the reflux cavity 220 under the drive of the conveying component 330, and flows back to the inside of the transformer body 100 through the flange pipe head 211, and is sprayed onto the surface of the electronic device for uniform spray cooling, thereby ensuring the dynamic movement of the oil, thereby avoiding the local high temperature phenomenon of the oil near the electronic device inside the transformer body 100. The pumping method of the conveying component 330 is more energy-saving and suitable for continuous work.
[0035] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. An oil-immersed transformer, characterized in that: The invention comprises: a transformer body (100), a heat dissipation guide column (200) and a conveying cavity group (300); the upper and lower sections of the heat dissipation guide column (200) are respectively fixedly connected with a circulation cavity (210) and a reflux cavity (220); the surfaces of the circulation cavity (210) and the reflux cavity (220) are both provided with flange pipe heads (211) connected with the transformer body (100); the conveying cavity group (300) comprises a cavity partition layer (310), a drive motor (320) and a conveying assembly (330) fixed to the surface of the cavity partition layer (310); the cavity partition layer (310) is fixedly installed on the inner side of the circulation cavity (210); A top cover (311) is provided on the top surface, the output end of the driving motor (320) is fixedly connected to a shaft (321), the conveying assembly (330) comprises a first rotating bar (332), an introduction seat (334) and an introduction seat (334) fixed to the surface of the compartment layer (310), a pump box (331) is fixedly installed on the surface of the introduction seat (334), the first rotating bar (332) and the first rotating bar (332) are both located between the pump box (331) and the introduction seat (334), and the end of the shaft (321) passes through the pump box (331) and is fixedly connected to the surface of the second rotating bar (333).
2. The oil-immersed transformer according to claim 1, characterized in that: The transformer body (100) and the heat dissipation guide pillar (200) are filled with heat-conducting oil, and the oil level is lower than the level of the circulation chamber (210).
3. The oil-immersed transformer according to claim 1, characterized in that: A one-way valve is provided inside the flange pipe head (211); the liquid flows in the flange pipe heads (211) at the ends of the circulation chamber (210) and the reflux chamber (220) are in opposite directions; and one end of the flange pipe head (211) on the surface of the circulation chamber (210) is connected to a nozzle located inside the transformer body (100).
4. The oil-immersed transformer according to claim 1, characterized in that: The surface of the pump box (331) is provided with a plurality of cutting guide holes, and the end of the flange pipe head (211) is connected to the inner cavity of the top sealing cover (311) and the compartment layer (310) for guiding out the oil between the compartment layer (310) and the top sealing cover (311).
5. The oil-immersed transformer according to claim 1, characterized in that: The surface of the introduction seat (334) is provided with a through hole located in the axial center area of the introduction seat (334) for introducing oil between the bottom surface of the compartment layer (310) and the circulation chamber (210).
6. The oil-immersed transformer according to claim 1, characterized in that: The first rotating bar (332) and the second rotating bar (333) are in the shape of planar spiral bars. One end of the shaft rod (321) is provided with a pin head that deviates from the axis of the driving motor (320), and the surface of the pin head is fixedly connected to the surface of the second rotating bar (333). The first rotating bar (332) is fixedly installed on the surface of the introduction seat (334).
7. The oil-immersed transformer according to claim 1, characterized in that: The surfaces of the first rotating strip (332) and the second rotating strip (333) are in sliding contact with the surfaces of the pump box (331) and the introduction seat (334) respectively.