An oil-immersed transformer device

Abstract

The utility model discloses an oil -immersed type variable pressure equipment, including oil tank, transformer main part, radiator and oil receiving tray. The oil tank is provided with variable pressure oil chamber, and fills in the variable pressure oil chamber with transformer oil, the transformer main part sets up in the oil tank and is located in the variable pressure oil chamber, the radiator sets up in the lateral wall of oil tank, the oil receiving tray is provided with the oil receiving groove of opening upwards, and the oil receiving groove has first oil receiving area and second oil receiving area, and the bottom wall of first oil receiving area is higher than the bottom wall of second oil receiving area, and the bottom of first oil receiving area is communicated with the second oil receiving area of oil receiving groove, and the lower extreme of oil tank sets up in first oil receiving area, and the radiator is located above the oil receiving tray, the transformer oil and rainwater in first oil receiving area can flow to second oil receiving area and store under the action of gravity, so that first oil receiving area is not easy to produce effusion, and then prevent rainwater from seeping into the inside of oil tank under the action of water pressure through tiny gap, so that can prolong the service life of transformer oil and transformer main part under the outdoor use occasion.

Description

Technical Field

[0001] This utility model relates to the field of transformers, and in particular to an oil-immersed transformer device. Background Technology

[0002] Some existing oil-immersed transformers include an oil tank, transformer body, radiator, and oil collection pan. The transformer body consists of the core and windings, and is located inside the oil tank, which is filled with transformer oil. The transformer oil submerges the transformer body and circulates between the tank and the radiator, allowing the heat generated by the transformer body to be transferred to the radiator for cooling. The oil collection pan supports the lower end of the tank. Since the tank and radiator casings are not perfectly sealed, dripping transformer oil is collected through the oil collection pan during operation. When used outdoors, rainwater can accumulate in the oil collection pan, creating continuous water pressure. This can cause rainwater to seep into the tank through tiny gaps, reducing the quality of the transformer oil and affecting the service life of both the transformer oil and the transformer body. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an oil-immersed transformer that, in outdoor applications, can extend the service life of the transformer oil and the transformer body.

[0004] An oil-immersed transformer according to an embodiment of the present invention includes an oil tank, a transformer body, a radiator, and an oil receiving tray. The oil tank has a transformer oil chamber filled with transformer oil. The transformer body is disposed in the oil tank and located within the transformer oil chamber. The radiator is disposed on the side wall of the oil tank. The oil receiving tray has an upward-facing oil receiving groove, which has a first oil receiving area and a second oil receiving area. The bottom wall of the first oil receiving area is higher than the bottom wall of the second oil receiving area. The bottom of the first oil receiving area communicates with the second oil receiving area of ​​the oil receiving groove. The lower end of the oil tank is located in the first oil receiving area, and the radiator is located above the oil receiving tray.

[0005] The oil-immersed transformer equipment according to the embodiments of this utility model has at least the following beneficial effects: the oil receiving tray has a first oil receiving area and a second oil receiving area. When transformer oil and rainwater are collected in the oil receiving tray, the transformer oil and rainwater located in the first oil receiving area can flow to the second oil receiving area for storage under the action of gravity, so that liquid is not easy to accumulate in the first oil receiving area, thereby preventing rainwater from seeping into the oil tank through tiny gaps under the action of water pressure, so that the service life of transformer oil and transformer body can be extended in outdoor use.

[0006] According to some embodiments of the present invention, the radiator and the oil receiving tray are arranged at intervals, with the radiator located above the second oil receiving area.

[0007] According to some embodiments of the present invention, the bottom wall of the oil tank is fixedly connected to the bottom wall of the first oil receiving area.

[0008] According to some embodiments of the present invention, the area of ​​the second oil receiving area is larger than the area of ​​the first oil receiving area, and the depth of the second oil receiving area is greater than the depth of the first oil receiving area.

[0009] According to some embodiments of the present invention, the first oil receiving area and the second oil receiving area are arranged side by side, and both the first oil receiving area and the second oil receiving area are rectangular.

[0010] According to some embodiments of the present invention, it also includes an oil storage tank, which is disposed at the upper end of the oil tank and has an oil storage cavity that is connected to the transformer oil cavity.

[0011] According to some embodiments of the present invention, a drain valve is also included, which is disposed on the oil receiving pan and located in the second oil receiving area.

[0012] According to some embodiments of the present invention, the drain valve is connected to the bottom wall of the second oil receiving area.

[0013] According to some embodiments of this utility model, the drain valve is located at the edge of the oil receiving pan.

[0014] According to some embodiments of the present invention, it further includes a support base, an oil receiving tray installed above the support base, the lower side of the oil receiving tray being stepped and having a first bottom surface and a second bottom surface, the first bottom surface being located below the first oil receiving area, the second bottom surface being located below the second oil receiving area, the first bottom surface being higher than the second bottom surface, the upper side of the support base being stepped and having a first support surface and a second support surface, the first support surface being higher than the second support surface, the first support surface abutting against the first bottom surface, and the second support surface abutting against the second bottom surface.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a side view of an oil-immersed transformer according to an embodiment of the present invention; Figure 2 This is a top view schematic diagram of an oil-immersed transformer according to an embodiment of the present utility model; Figure 3This is a side view of the oil receiving tray according to an embodiment of the present invention.

[0017] Figure label: Fuel tank capacity: 100; Radiator 200; Oil receiving tray 300, oil receiving trough 310, first oil receiving area 311, second oil receiving area 312, first bottom surface 320, second bottom surface 330; Oil storage tank 400; Drain valve 500; Support base 600, first support surface 610, second support surface 620. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 3This invention relates to an oil-immersed transformer device, comprising an oil tank 100, a transformer body, a radiator 200, and an oil receiving tray 300. The oil tank 100 has a transformer oil chamber filled with transformer oil. The transformer body is disposed within the oil tank 100 and located within the transformer oil chamber. The radiator 200 is disposed on the side wall of the oil tank 100. The oil receiving tray 300 has an upward-facing oil receiving groove 310, which has a first oil receiving area 311 and a second oil receiving area 312. The bottom wall of the first oil receiving area 311 is higher than the bottom wall of the second oil receiving area 312. The bottom of the oil receiving groove 310 communicates with the second oil receiving area 312 of the first oil receiving area 311. The lower end of the oil tank 100 is located at the first oil receiving area 311, and the radiator 200 is located above the oil receiving tray 300.

[0023] The oil receiving tray 300 has an oil receiving area 310 with a first oil receiving area 311 and a second oil receiving area 312. When transformer oil and rainwater are collected in the oil receiving tray 300, the transformer oil and rainwater in the first oil receiving area 311 can flow to the second oil receiving area 312 for storage under the action of gravity. This makes it less likely for liquid to accumulate in the first oil receiving area 311, thereby preventing rainwater from seeping into the oil tank 100 through tiny gaps under water pressure. This extends the service life of the transformer oil and the transformer body in outdoor applications.

[0024] Furthermore, since the fuel tank 100 is installed on the oil receiving pan 300, accumulated water in the past easily corroded the bottom of the fuel tank 100 and the connection and fixing structure between the fuel tank 100 and the oil receiving pan 300. Therefore, this embodiment can also reduce the corrosion of the bottom of the fuel tank 100 by rainwater, improve the service life of the fuel tank 100 and the stability of the installation connection between the fuel tank 100 and the oil receiving pan 300.

[0025] Reference Figure 1 and Figure 2 In this embodiment, the radiator 200 and the oil receiving pan 300 are arranged vertically at intervals, with the radiator 200 located above the second oil receiving area 312. Transformer oil leaking from the radiator 200 can drip directly into the second oil receiving area 312 under gravity. The first oil receiving area 311 receives the transformer oil leaking from the oil tank 100. By fully utilizing the space of the second oil receiving area 312, it can both store the oil and rainwater from the first oil receiving area 311 and receive the transformer oil leaking from the radiator 200. This allows for a relatively compact structure for the oil receiving pan 300.

[0026] Reference Figure 1In this embodiment, the bottom wall of the fuel tank 100 is fixedly connected to the bottom wall of the first oil receiving area 311, making the assembly connection between the fuel tank 100 and the oil receiving tray 300 relatively firm, the force distribution relatively uniform, and the oil receiving tray 300 providing good support for the fuel tank 100. It is conceivable that in other embodiments, the fuel tank 100 may also be connected to the side wall of the oil receiving tray 300 via a side wall, thus achieving the assembly connection between the fuel tank 100 and the oil receiving tray 300.

[0027] Specifically, the bottom wall of the oil tank 100 can be fixedly connected to the bottom wall of the first oil receiving area 311 by means of screw fastening or welding.

[0028] Reference Figure 1 and Figure 2 In this embodiment, the area of ​​the second oil receiving area 312 is larger than the area of ​​the first oil receiving area 311, and the depth of the second oil receiving area 312 is greater than the depth of the first oil receiving area 311. The larger area of ​​the second oil receiving area 312 allows for the adaptation to a larger radiator 200, resulting in better indirect heat dissipation for the transformer body. The greater depth of the second oil receiving area 312, combined with its larger area, allows for the containment of more oil and rainwater, reducing the need for frequent cleaning of the oil receiving pan 300 and improving maintainability.

[0029] Reference Figure 1 and Figure 2 In this embodiment, the first oil receiving area 311 and the second oil receiving area 312 are arranged side by side, and both the first oil receiving area 311 and the second oil receiving area 312 are rectangular. Specifically, in this embodiment of the oil-immersed transformer equipment, the radiators 200 are all located on the same side wall of the oil tank 100. At this time, the first oil receiving area 311 and the second oil receiving area 312 are both rectangular and arranged side by side, which can respectively correspond to the oil tank 100 and the radiator 200, and the layout is relatively convenient for processing.

[0030] It is conceivable that in other embodiments, the first oil receiving area 311 and the second oil receiving area 312 may also be arranged in other ways, such as the second oil receiving area 312 being annular and arranged around the outer periphery of the first oil receiving area 311, which is suitable for the layout of a plurality of radiators 200 arranged around the oil tank 100.

[0031] Reference Figure 1 In this embodiment, an oil conservator 400 is also included. The oil conservator 400 is disposed at the upper end of the oil tank 100. The oil conservator 400 has an oil storage chamber that is connected to the transformer oil chamber. The oil conservator 400 can store excess transformer oil to compensate for volume changes caused by cooling and contraction of the transformer oil, maintain the oil tank 100 full of oil, and reduce the contact area between the transformer oil and air to prevent the transformer oil from getting damp or deteriorating.

[0032] Reference Figure 2 In this embodiment, a drain valve 500 is also included, which is disposed on the oil receiving pan 300 and located in the second oil receiving area 312. The drain valve 500 is normally closed, allowing the second oil receiving area 312 of the oil receiving pan 300 to store oil and rainwater without leakage. When maintenance of the oil-immersed transformer is required, maintenance personnel can directly open the drain valve 500, allowing the oil and rainwater to be discharged directly to a predetermined location for cleaning.

[0033] Reference Figure 2 In this embodiment, the drain valve 500 is connected to the bottom wall of the second oil receiving area 312, which can relatively fully drain the oil and rainwater from the oil receiving pan 300, reduce the risk of oil and rainwater remaining in the second oil receiving area 312, and facilitate the cleaning and maintenance of the oil receiving pan 300.

[0034] Specifically, the drain valve 500 adopts a pull-out type drain assembly, similar to that of a kitchen sink drain assembly. It has a simple structure and is easy to use; maintenance personnel only need to pull it to drain the liquid. It is conceivable that in other implementations, the drain valve 500 could also be a manually operated valve, such as a ball valve, gate valve, or plug valve, etc., which can be selected according to actual needs by those skilled in the art.

[0035] Reference Figure 2 In this embodiment, the drain valve 500 is located at the edge of the oil receiving pan 300. When transformer oil and rainwater accumulate in the second oil receiving area 312, the visibility in the second oil receiving area 312 is low. At this time, the drain valve 500 is located at the edge of the oil receiving pan 300, which makes it convenient for maintenance personnel to find and open the drain valve 500, simplifying the maintenance process and making the maintenance layout more user-friendly.

[0036] Reference Figure 1In this embodiment, the system also includes a support base 600, an oil receiving tray 300 mounted on top of the support base 600, and a stepped lower side of the oil receiving tray 300 having a first bottom surface 320 and a second bottom surface 330. The first bottom surface 320 is located below the first oil receiving area 311, and the second bottom surface 330 is located below the second oil receiving area 312. The first bottom surface 320 is higher than the second bottom surface 330. The upper side of the support base 600 is stepped and has a first support surface 610 and a second support surface 620. The first support surface 610 is higher than the second support surface 620. The first support surface 610 abuts against the first bottom surface 320, and the second support surface 620 abuts against the second bottom surface 330. The oil receiving tray 300 is a plate of approximately uniform thickness. Since the bottom wall of the first oil receiving area 311 is higher than the bottom wall of the second oil receiving area 312, the first bottom surface 320 of the oil receiving tray 300 is also higher than the second bottom surface 330, resulting in an approximately stepped design. This design leads to relatively high material utilization. To support the lower surface of the stepped design of the oil receiving tray 300, the support base 600 also features a stepped first support surface 610 and a second support surface 620, effectively and securely supporting the column oil receiving tray 300 with good support performance.

[0037] Optionally, the drain valve 500 can be detachably installed on the oil receiving pan 300, allowing maintenance personnel to easily replace and maintain the drain valve 500 in case of leakage. Specifically, the drain valve 500 can be detachably installed on the oil receiving pan 300 by means of, for example, snap-fit ​​or screw fastening.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An oil-immersed transformer, characterized in that, include: The oil tank (100) is provided with a transformer oil chamber, which is filled with transformer oil; The transformer body is disposed in the oil tank (100) and located within the transformer oil chamber; A radiator (200) is disposed on the side wall of the oil tank (100); An oil receiving tray (300) is provided with an upward-facing oil receiving groove (310). The oil receiving groove (310) has a first oil receiving area (311) and a second oil receiving area (312). The bottom wall of the first oil receiving area (311) is higher than the bottom wall of the second oil receiving area (312). The bottom of the oil receiving groove (310) is connected to the second oil receiving area (312) of the oil receiving groove (310). The lower end of the oil tank (100) is located in the first oil receiving area (311). The radiator (200) is located above the oil receiving tray (300).

2. The oil-immersed transformer according to claim 1, characterized in that: The radiator (200) and the oil receiving tray (300) are arranged vertically at intervals, with the radiator (200) located above the second oil receiving area (312).

3. The oil-immersed transformer according to claim 1, characterized in that: The bottom wall of the oil tank (100) is fixedly connected to the bottom wall of the first oil receiving area (311).

4. The oil-immersed transformer according to claim 1, characterized in that: The area of ​​the second oil receiving area (312) is larger than the area of ​​the first oil receiving area (311), and the depth of the second oil receiving area (312) is greater than the depth of the first oil receiving area (311).

5. The oil-immersed transformer according to claim 1, characterized in that: The first oil receiving area (311) and the second oil receiving area (312) are arranged side by side, and both the first oil receiving area (311) and the second oil receiving area (312) are rectangular.

6. The oil-immersed transformer according to claim 1, characterized in that: It also includes an oil storage tank (400), which is located at the upper end of the oil tank (100). The oil storage tank (400) has an oil storage cavity, which is connected to the transformer oil cavity.

7. The oil-immersed transformer according to claim 1, characterized in that: It also includes a drain valve (500), which is disposed on the oil receiving pan (300) and located in the second oil receiving area (312).

8. The oil-immersed transformer according to claim 7, characterized in that: The drain valve (500) is connected to the bottom wall of the second oil receiving area (312).

9. The oil-immersed transformer according to claim 7, characterized in that: The drain valve (500) is located at the edge of the oil receiving pan (300).

10. The oil-immersed transformer according to claim 1, characterized in that: It also includes a support base (600), the oil receiving tray (300) is installed above the support base (600), the lower side of the oil receiving tray (300) is stepped and has a first bottom surface (320) and a second bottom surface (330), the first bottom surface (320) is located below the first oil receiving area (311), the second bottom surface (330) is located below the second oil receiving area (312), the first bottom surface (320) is higher than the second bottom surface (330), the upper side of the support base (600) is stepped and has a first support surface (610) and a second support surface (620), the first support surface (610) is higher than the second support surface (620), the first support surface (610) abuts against the first bottom surface (320), and the second support surface (620) abuts against the second bottom surface (330).

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