Oil seal for oil-immersed transformer

Abstract

The oil seal for the oil-immersed transformer comprises an oil seal cover body, a sealing cavity is formed in the oil seal cover body, a plurality of fixing frames are symmetrically and fixedly connected to the inner wall of the sealing cavity, fixing plates are symmetrically and fixedly connected to a cavity opening of the sealing cavity, and the bottoms of the fixing plates make contact with the surfaces of the tops of the fixing frames. A plurality of mounting assemblies are movably connected to the surface of the fixing plate, a connecting plate is fixedly connected to one side of the fixing plate, and a sealing plate is mounted on the connecting plate. In combination with the structural design, the oil seal can have the function of adjusting the mounting frame according to different mounting hole positions through matched connection between the mounting assembly and the fixing plate, the universality is better, the use cost is reduced, and the oil seal maintenance efficiency of the oil-immersed transformer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an oil seal for an oil-immersed transformer. Background Art

[0002] An oil-immersed transformer is a transformer whose coil and core are immersed in special transformer oil. The advantage of this is that it can dissipate heat and isolate the coil from the air to prevent moisture in the air from corroding the transformer's core. It can also play a certain arc extinguishing role. Therefore, my country's early power transformers and power switches were all soaked in oil, and oil-immersed transformers require oil seals during use. The oil seal is the customary name for general seals. Simply put, it is a seal for lubricating oil. It is a mechanical component used to seal grease (oil is the most common liquid substance in the transmission system, and also refers to general liquid substances).

[0003] At present, oil-immersed transformers need to replace oil seals regularly to ensure that the sealing of the lubricating oil used in the oil-immersed transformer is maintained at a high level. Since the sizes of oil-immersed transformers produced by different transformer manufacturers are different, it is necessary to contact the original transformer manufacturer to obtain the oil seal when replacing the oil seal, which reduces the oil seal maintenance efficiency of the oil-immersed transformer and affects normal use. Summary of the Invention

[0004] The purpose of the present utility model is to provide an oil seal for an oil-immersed transformer, so as to solve the problem mentioned in the above background technology that the oil seal of the current oil-immersed transformer needs to be replaced regularly to ensure that the sealing performance of the lubricating oil used in the oil-immersed transformer is maintained at a high level. Since the sizes of oil-immersed transformers produced by different transformer manufacturers may vary, it is necessary to contact the original transformer manufacturer to obtain the oil seal when replacing the oil seal, which reduces the maintenance efficiency of the oil seal of the oil-immersed transformer and thus affects normal use.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an oil seal for an oil-immersed transformer, comprising an oil seal cover, a sealing cavity being defined in the oil seal cover, a plurality of fixing frames being symmetrically fixedly connected to the inner wall of the sealing cavity, a fixing plate being symmetrically fixedly connected to the opening of the sealing cavity, and the bottom of the fixing plate being in contact with the top surface of the fixing frame, a plurality of mounting components being movably connected to the surface of the fixing plate, a connecting plate being fixedly connected to one side of the fixing plate, and a sealing plate being mounted on the connecting plate.

[0006] Preferably, the mounting assembly includes a mounting frame, a sliding block and a bolt, the sliding block is fixedly mounted on the bottom surface of the mounting frame, the sliding block surface is provided with connecting holes on both sides of the mounting frame, and the connecting holes are connected with bolts for locking the sliding block.

[0007] Preferably, a sliding groove is provided in the fixing plate, and a bolt is slidably connected in the sliding groove.

[0008] Preferably, a sliding opening of the same size as the connecting hole is opened on the surface of the fixing plate, and the sliding opening is communicated with the sliding groove, and a sliding block is slidably connected in the sliding opening.

[0009] Preferably, notches are provided at both ends of the surface of the fixing plate.

[0010] Preferably, a connection groove is provided on the surface of the connection plate, and a sealing plate is clamped in the connection groove.

[0011] Beneficial effects

[0012] Compared with the existing technology, the beneficial effects of the present invention are:

[0013] Combined with the structural design of the utility model, through the cooperative connection between the mounting assembly and the fixing plate, the oil seal can have the function of adjusting the mounting frame according to different mounting hole positions, which has better compatibility, reduces the cost of use, and improves the oil seal maintenance efficiency of the oil-immersed transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the oil seal cover structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the installation assembly structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the matching structure of the fixing plate and the mounting assembly of the present utility model;

[0018] Figure 5 This is an enlarged structural diagram of point A of the present invention.

[0019] The corresponding relationship between the labels and component names in the figures is as follows:

[0020] 1. Oil seal housing; 2. Mounting assembly; 3. Fixing plate; 4. Connecting plate; 5. Sealing plate; 6. Sealing cavity;

[0021] 7. Fixing bracket; 21. Mounting bracket; 22. Sliding block; 23. Connecting hole; 24. Bolt; 31. Sliding slot;

[0022] 32. Slide; 33. Notch; 41. Connecting groove. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "front," "back," "inner," "outer," "vertical," and "horizontal" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and are therefore not to be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0025] like Figure 1-5 It is a structural schematic diagram of an oil seal for an oil-immersed transformer in a preferred embodiment of the present invention. In this embodiment, an oil seal for an oil-immersed transformer includes an oil seal cover 1, a sealing cavity 6 is opened in the oil seal cover 1, and a plurality of fixing frames 7 are symmetrically fixedly connected to the inner wall of the sealing cavity 6. A fixing plate 3 is symmetrically fixedly connected at the cavity opening of the sealing cavity 6, and the bottom of the fixing plate 3 contacts the top surface of the fixing frame 7. The fixing frame 7 strengthens the strength of the inner wall of the oil seal cover 1 while supporting the fixing plate 3. A plurality of mounting components 2 are movably connected to the surface of the fixing plate 3, and are fixedly installed in the transformer body through the mounting components 2. A connecting plate 4 is fixedly connected to one side of the fixing plate 3, and a sealing plate 5 is installed on the connecting plate 4; combined with the structural design of the present invention, through the cooperative connection between the mounting component 2 and the fixing plate 3, the oil seal can have the function of adjusting the mounting frame 21 according to different mounting hole positions, which has better compatibility, reduces the cost of use, and improves the maintenance efficiency of the oil seal of the oil-immersed transformer.

[0026] In this embodiment, the mounting assembly 2 includes a mounting frame 21, a sliding block 22 and a bolt 24. The sliding block 22 is fixedly installed on the bottom surface of the mounting frame 21, and the surface of the sliding block 22 is provided with connecting holes 23 on both sides of the mounting frame 21, and the connecting holes 23 are connected with bolts 24 for locking the sliding block 22. The locking effect of the sliding connection of the sliding block 22 is achieved by the bolts.

[0027] In this embodiment, a sliding groove 31 is defined in the fixing plate 3 , and a screw head of the bolt 24 is slidably connected in the sliding groove 31 . The screw shaft of the bolt 24 passes through the connecting hole 23 and is threadedly connected to the nut of the bolt 24 .

[0028] In this embodiment, a sliding opening 32 of the same size as the connecting hole 23 is provided on the surface of the fixing plate 3, and the sliding opening 32 is communicated with the sliding groove 31. The sliding block 22 is slidably connected in the sliding opening 32. The opening of this sliding opening 32 can effectively avoid the possibility of position deviation of the mounting frame 21 during the adjustment process, and at the same time it is for limiting the screw rod of the bolt 24 from detaching from the sliding groove 31.

[0029] In this embodiment, notches 33 are provided at both ends of the surface of the fixing plate 3 , which are provided to facilitate the insertion of the screw rod of the bolt 24 into the sliding groove 31 .

[0030] In this embodiment, a connection groove 41 is provided on the surface of the connection plate 4 , and the sealing plate 5 is clamped in the connection groove 41 . This structural design facilitates better replacement of the sealing plate 5 .

[0031] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. An oil seal for an oil-immersed transformer, comprising an oil seal housing (1), characterized in that: A sealing cavity (6) is provided in the oil seal housing (1), and a plurality of fixing frames (7) are symmetrically fixedly connected to the inner wall of the sealing cavity (6). A fixing plate (3) is symmetrically fixedly connected to the opening of the sealing cavity (6), and the bottom of the fixing plate (3) is in contact with the top surface of the fixing frame (7). A plurality of mounting components (2) are movably connected to the surface of the fixing plate (3). A connecting plate (4) is fixedly connected to one side of the fixing plate (3), and a sealing plate (5) is mounted on the connecting plate (4).

2. The oil seal for an oil-immersed transformer according to claim 1, characterized in that: The mounting assembly (2) comprises a mounting frame (21), a sliding block (22) and a bolt (24); the sliding block (22) is fixedly mounted on the bottom surface of the mounting frame (21); the surface of the sliding block (22) is provided with connecting holes (23) on both sides of the mounting frame (21); and the connecting holes (23) are connected with bolts (24) for locking the sliding block (22).

3. The oil seal for an oil-immersed transformer according to claim 1, characterized in that: A sliding groove (31) is provided in the fixing plate (3), and a bolt (24) is slidably connected in the sliding groove (31).

4. The oil seal for an oil-immersed transformer according to claim 3, characterized in that: The surface of the fixed plate (3) is provided with a sliding opening (32) of the same size as the connecting hole (23), and the sliding opening (32) is communicated with the sliding groove (31), and a sliding block (22) is slidably connected in the sliding opening (32).

5. The oil seal for an oil-immersed transformer according to claim 4, characterized in that: Notches (33) are provided at both ends of the surface of the fixing plate (3).

6. The oil seal for an oil-immersed transformer according to claim 1, characterized in that: A connection groove (41) is provided on the surface of the connection plate (4), and a sealing plate (5) is clamped in the connection groove (41).

Images