Diaphragm type transformer

Abstract

The utility model provides a diaphragm type transformer which comprises an oil tank, a top cover, two side covers and diaphragms, two side surfaces of the oil tank are provided with openings, the other two side surfaces are provided with radiating fins, the top cover is fixedly arranged at the top of the oil tank, the two side covers are respectively arranged at the two openings of the oil tank, the diaphragms are fixedly arranged at the openings, and the radiating fins are arranged on the two side surfaces of the oil tank. And the opening is blocked. The top cover is provided with an oil filling port, and an iron core is arranged in the oil tank. According to the diaphragm type transformer, the oil tank and the side cover are arranged in a matched mode, it is ensured that the transformer is convenient to assemble, the space in the transformer is enlarged, the diaphragm and the side cover are arranged in a matched mode, it is ensured that transformer oil can expand with heat and contract with cold in the diaphragm, and the top cover and the side cover are arranged in a matched mode, so that the transformer oil can be stored in the oil tank and the diaphragm. And through cooperative arrangement of the partition plate and the pressing plate, it is ensured that the diaphragm can be fixed to the opening, the sealing performance is improved, and through arrangement of the inner cavity, it is ensured that the diaphragm can swing back and forth.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a diaphragm transformer. Background Art

[0002] Transformers can be divided into oil-immersed transformers and dry-type transformers. In order to enhance insulation and cooling conditions, the transformer's core and windings are immersed in a tank filled with transformer oil. Transformer components include core, transformer oil, oil tank and cooling device, voltage regulator, desiccant, safety airway, gas relay, oil storage cabinet and temperature measuring device.

[0003] In the existing oil-immersed transformer, when the transformer oil expands due to heat, the oil flows from the oil tank to the oil conservator; when the transformer oil contracts due to cold, the oil flows from the oil conservator to the oil tank. The oil conservator is installed above the oil tank, and the oil conservator and the oil tank are connected by a pipeline. Therefore, the oil conservator protrudes from the outside of the oil tank, thereby increasing the space occupied during installation. Moreover, most transformers are installed outdoors. Due to external reasons, such as strong winds, the oil conservator and the pipeline are easily damaged. In addition, due to the small diameter of the pipeline, the flow rate of the transformer oil between the oil tank and the oil conservator is affected. Utility Model Content

[0004] The utility model aims to provide a diaphragm transformer to solve the problems that the oil storage tank of the existing oil-immersed transformer is easily damaged and the flow speed is slow.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A diaphragm transformer, comprising:

[0007] An oil tank, wherein two sides of the oil tank are set as openings, and the other two sides are provided with heat sinks; a top cover, fixedly arranged on the top of the oil tank; two side covers, respectively arranged at the two openings of the oil tank; a diaphragm, fixedly arranged at the openings to seal the openings.

[0008] Furthermore, a partition is fixedly provided at the bottom of the top cover, the partition is flush with the opening, and the diaphragm is fixedly mounted on the partition.

[0009] Furthermore, the side cover and the opening are bent outwardly to form flanges, the two flanges are in contact with each other, and the diaphragm is clamped between the two flanges.

[0010] Furthermore, a pressure plate is fixedly arranged on the partition, and the pressure plate fixes the diaphragm on the partition.

[0011] Furthermore, the top cover and the side cover are fixed on the oil tank by fasteners.

[0012] Furthermore, the flange, the top cover, the partition and the pressure plate are respectively provided with a plurality of through holes, the two ends of the top cover and the top of the side cover are provided with a plurality of strip holes, and the fasteners are provided in a plurality of groups, and the plurality of groups of fasteners are respectively inserted into the through holes and the strip holes.

[0013] Furthermore, the fastener includes a bolt inserted into the through hole or the strip hole, and a nut screwed on the bolt.

[0014] Furthermore, an inner cavity is provided in the side cover, and the diaphragm swings in the oil tank and the inner cavity.

[0015] Furthermore, an oil filling port is provided on the top cover, and an iron core is arranged in the oil tank.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The diaphragm transformer described in the utility model ensures convenient assembly of the transformer and increases the space inside the transformer through the coordinated arrangement of the oil tank and the side cover, ensures that the transformer oil can expand and contract in the diaphragm through the coordinated arrangement of the diaphragm and the side cover, ensures that the transformer oil can be in the oil tank and the diaphragm and avoid leakage through the coordinated arrangement of the top cover and the side cover, ensures that the diaphragm can be fixed at the opening and improve the sealing through the coordinated arrangement of the partition plate and the pressure plate, facilitates the installation of the side cover and the oil tank through the arrangement of the flange, and ensures that the diaphragm can swing back and forth through the arrangement of the inner cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the diaphragm transformer according to an embodiment of the utility model;

[0020] Figure 2 It is an exploded schematic diagram of the diaphragm transformer according to an embodiment of the utility model;

[0021] Figure 3 This is an exploded schematic diagram of the side cover and the diaphragm according to an embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the top cover part according to an embodiment of the utility model;

[0023] Figure 5 It is a partial schematic diagram of the partition and pressure plate described in an embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1. Oil tank; 2. Opening; 3. Heat sink; 4. Top cover; 5. Side cover; 6. Diaphragm; 7. Partition; 8. Flanging; 9. Press plate;

[0026] 10. Fasteners; 1001. Bolts; 1002. Nuts;

[0027] 11. Through hole; 12. Strip hole; 13. Inner cavity; 14. Oil filling port; 15. Iron core. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0032] This embodiment relates to a diaphragm 6-type transformer, the overall structure of which is as follows: Figure 1 and Figure 2 As shown, it includes an oil tank 1, a top cover 4, a side cover 5, and a diaphragm 6.

[0033] Two sides of the oil tank 1 are set as openings 2, and the other two sides are provided with heat sinks 3. A top cover 4 is fixedly arranged on the top of the oil tank 1. Two side covers 5 are respectively arranged at the two openings 2 of the oil tank 1. A diaphragm 6 is fixedly arranged at the openings 2 to block the openings 2. An oil filling port 14 is opened on the top cover 4, and an iron core 15 is arranged in the oil tank 1.

[0034] It is worth mentioning that the opening 2 is located on both sides of the oil tank 1 in the length direction, and the heat sink 3 is located on both sides of the oil tank 1 in the width direction, which ensures that the transformer can dissipate heat and that the transformer oil expands toward the two openings 2 during thermal expansion. The side cover 5 is used to seal the openings 2 on both sides, and the diaphragm 6 ensures that the transformer oil can expand outward during thermal expansion. On the contrary, the transformer oil shrinks toward the oil tank 1 during cold contraction. The top cover 4 is installed on the top of the oil tank 1, and the transformer oil is injected from the oil filling port 14 to ensure that the transformer oil is located in the two diaphragms 6 and the oil tank 1. The iron core 15 is installed in the two diaphragms 6 and the oil tank 1 to ensure that the iron core 15 can be immersed in the transformer oil.

[0035] Based on the above overall introduction, an exemplary structure of the diaphragm 6-type transformer of this embodiment is as follows: Figure 5 As shown, a partition plate 7 is fixedly arranged at the bottom of the top cover 4, the partition plate 7 is flush with the opening 2, and the diaphragm 6 is fixedly installed on the partition plate 7. A pressing plate 9 is fixedly arranged on the partition plate 7, and the pressing plate 9 fixes the diaphragm 6 on the partition plate 7.

[0036] It should be noted that the partition 7 can be welded to the bottom of the top cover 4 and flush with the opening 2 to facilitate the installation of the diaphragm 6 and ensure the sealing between the partition 7, the opening 2 and the diaphragm 6. The diaphragm 6 is installed at the partition 7 and the opening 2 to ensure that the transformer oil can be blocked by the diaphragm 6, and the toughness of the diaphragm 6 ensures that the transformer oil can expand and contract with heat and cold. The pressure plate 9 and the partition 7 clamp the upper part of the diaphragm 6 to prevent the diaphragm 6 and the partition 7 from detaching, causing the transformer oil to flow into the side cover 5.

[0037] As a preferred example, Figure 2 and Figure 3 As shown, the side cover 5 and the opening 2 of this embodiment are bent outwardly to form flanges 8, the two flanges 8 abut against each other, and the diaphragm 6 is clamped between the two flanges 8. The top cover 4 and the side cover 5 are fixed to the oil tank 1 by fasteners 10.

[0038] Specifically, the flange 8 can be welded at the side cover 5 and the opening 2, and is arranged perpendicular to the side cover 5 and the opening 2. The flanges 8 at the side cover 5 and the opening 2 abut against each other, and the diaphragm 6 is installed therebetween to clamp the diaphragm 6 by abutting against each other. This arrangement ensures that the oil tank 1 and the side cover 5 are blocked by the diaphragm 6, so that the diaphragm 6 swings with the transformer oil. The fasteners 10 are passed through the two flanges 8, thereby clamping the two flanges 8.

[0039] As a preferred example, Figure 4 As shown, in this embodiment, a plurality of through holes 11 are respectively provided on the flange 8, the top cover 4, the partition 7 and the pressure plate 9, a plurality of strip holes 12 are provided on both ends of the top cover 4 and the top of the side cover 5, and a plurality of groups of fasteners 10 are provided, and the plurality of groups of fasteners 10 are respectively inserted into the through holes 11 and the strip holes 12.

[0040] It should be noted that the diaphragm 6 is clamped between the two flanges 8 by fasteners 10, and the diaphragm 6 is clamped between the partition 7 and the pressure plate 9 by fasteners 10. This arrangement ensures that the diaphragm 6 can be fixed at the opening 2 and achieve a sealed state to block the transformer oil in the oil tank 1. Similarly, the top cover 4 and the oil tank 1 are fastened by fasteners 10 to ensure the sealing between the top cover 4 and the oil tank 1. The purpose of setting the strip holes 12 on the side cover 5 and the top cover 4 is that when the side cover 5 and the oil tank 1 are fixed, the position of the top of the side cover 5 on the top cover 4 will change. The strip holes 12 are set to ensure that the fasteners 10 can fasten the top cover 4 and the side cover 5.

[0041] As a preferred embodiment, Figure 2 and Figure 5 As shown, the fastener 10 includes a bolt 1001 inserted into the through hole 11 or the strip hole 12, and a nut 1002 screwed on the bolt 1001. An inner cavity 13 is provided in the side cover 5, and the diaphragm 6 swings in the oil tank 1 and the inner cavity 13.

[0042] It should be noted that the bolt 1001 is inserted into the strip hole 12 or the through hole 11, and the nut 1002 is threadedly connected to the bolt 1001, so that the bolt 1001 and the nut 1002 can clamp the side cover 5, the top cover 4 and the oil tank 1 tightly to avoid leakage of transformer oil, facilitate installation and improve safety. The inner cavity 13 opened in the side cover 5 can ensure that the diaphragm 6 can swing back and forth between the inner cavity 13 and the oil tank 1 when the transformer oil expands and contracts, thereby avoiding the formation of gaps in the oil tank 1.

[0043] The diaphragm 6 type transformer in this embodiment ensures that the transformer is easy to assemble and the space inside the transformer is increased through the coordinated arrangement of the oil tank 1 and the side cover 5. The coordinated arrangement of the diaphragm 6 and the side cover 5 ensures that the transformer oil can expand and contract in the diaphragm 6. The coordinated arrangement of the top cover 4 and the side cover 5 ensures that the transformer oil can be in the oil tank 1 and the diaphragm 6 to avoid leakage. The coordinated arrangement of the partition plate 7 and the pressure plate 9 ensures that the diaphragm 6 can be fixed at the opening 2 to improve the sealing performance. The arrangement of the flange 8 facilitates the installation of the side cover 5 and the oil tank 1. The arrangement of the inner cavity 13 ensures that the diaphragm 6 can swing back and forth.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A diaphragm transformer, characterized in that: include: An oil tank (1), wherein two side surfaces of the oil tank (1) are arranged as openings (2), and the other two side surfaces are arranged with cooling fins (3); A top cover (4) fixedly arranged on the top of the oil tank (1); Two side covers (5) are respectively arranged at the two openings (2) of the oil tank (1); The diaphragm (6) is fixedly arranged at the opening (2) to seal the opening (2).

2. The diaphragm transformer according to claim 1, characterized in that: A partition plate (7) is fixedly arranged at the bottom of the top cover (4), the partition plate (7) is flush with the opening (2), and the diaphragm (6) is fixedly mounted on the partition plate (7).

3. The diaphragm transformer according to claim 2, characterized in that: The side cover (5) and the opening (2) are bent outwardly to form flanges (8), the two flanges (8) are in contact with each other, and the diaphragm (6) is clamped between the two flanges (8).

4. The diaphragm transformer according to claim 3, characterized in that: A pressing plate (9) is fixedly arranged on the partition (7), and the pressing plate (9) fixes the diaphragm (6) on the partition (7).

5. The diaphragm transformer according to claim 4, characterized in that: The top cover (4) and the side cover (5) are fixedly arranged on the oil tank (1) via fasteners (10).

6. The diaphragm transformer according to claim 5, characterized in that: The flange (8), the top cover (4), the partition (7) and the pressure plate (9) are respectively provided with a plurality of through holes (11); both ends of the top cover (4) and the top of the side cover (5) are provided with a plurality of strip holes (12); a plurality of groups of fasteners (10) are provided, and the plurality of groups of fasteners (10) are respectively inserted into the through holes (11) and the strip holes (12).

7. The diaphragm transformer according to claim 6, characterized in that: The fastener (10) comprises a bolt (1001) inserted into a through hole (11) or a strip hole (12), and a nut (1002) threaded onto the bolt (1001).

8. The diaphragm transformer according to claim 1, characterized in that: An inner cavity (13) is provided in the side cover (5), and the diaphragm (6) swings in the oil tank (1) and the inner cavity (13).

9. The diaphragm transformer according to claim 1, characterized in that: An oil filling port (14) is provided on the top cover (4), and an iron core (15) is provided in the oil tank (1).

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