A mobile transformer vacuum oiling auxiliary tool

Abstract

The present application belongs to the technical field of transformer production, and relates to a mobile transformer vacuum oil injection auxiliary tool. Outer spherical bearings are fixedly installed at the length direction ends of the top of a vehicle frame. Oil delivery pipelines pass through the outer spherical bearings and are rotationally connected with the outer spherical bearings. The oil delivery pipelines have a tee structure, including pipeline joint one, pipeline joint two and pipeline joint three. A sealingly installed connecting flange is arranged at the pipeline joint two. A sealingly installed rotary joint is arranged at the pipeline joint one and the pipeline joint three. Rotating wheels are fixedly installed at the outer circumferential surfaces of the two ends of the oil delivery pipelines. The rotating wheels are located at the inner sides of the outer spherical bearings. An oil injection hose winding cylinder is fixedly connected with the adjacent side surfaces of a pair of rotating wheels at the two ends of the oil injection hose winding cylinder. The oil injection hose is wound on the oil injection hose winding cylinder. Flanges are arranged at the two ends of the oil injection hose. The auxiliary tool does not need to disassemble the oil injection hose and the oil delivery pipelines from the trolley during use, can realize high-efficiency vacuum oil injection, can guarantee the oil injection effect, and can improve the quality of transformer products.

Description

Technical Field

[0001] This invention belongs to the field of transformer manufacturing technology and relates to a mobile auxiliary tooling for vacuum oil injection into transformers. Background Technology

[0002] Currently, when vacuum-filling transformers, it is necessary to manually transport the oil filling pipe to the location of the transformer, and then connect the oil filling pipe to the oil filling valve of the transformer body. The process of disassembling the oil filling pipe from the transport equipment and assembling the oil filling pipe on the transformer body is cumbersome and inefficient. During vacuum oil filling, the negative pressure of the oil filling pipe is large and the oil flow impact force is strong. Traditional hoses or steel pipes are prone to violent shaking, swinging or axial movement during the oil filling process, which cannot meet the process requirements of transformer oil filling and the oil filling operation efficiency is low. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a mobile auxiliary tooling for vacuum oil injection into transformers. The technical solution adopted by this invention is as follows: A mobile transformer vacuum oil filling auxiliary tooling includes a frame. Spherical bearings are fixedly installed at both ends of the top of the frame along its length. A rigid oil supply pipeline passes through both ends of the spherical bearings and is rotatably connected to them. The oil supply pipeline has a three-way structure, including a first connector, a second connector, and a third connector. A connecting flange is sealed at the second connector in the middle. Rotary joints are sealed at the first and third connectors. Wheels are fixedly installed on the outer circumferential surfaces of both ends of the oil supply pipeline, located inside the spherical bearings. The ends of an oil filling hose winding cylinder are fixedly connected to the adjacent sides of a pair of wheels. The oil filling hose is wound around the oil filling hose winding cylinder, and flanges are provided at both ends of the oil filling hose.

[0004] Preferably, the frame, the wheel, and the oil injection hose winding cylinder all adopt a frame structure.

[0005] Preferably, the outer spherical bearing is a base-thickened type outer spherical bearing.

[0006] The beneficial effects of this invention are: The auxiliary tooling of this invention can achieve high-efficiency vacuum oil injection without removing the oil injection hose and oil delivery pipeline from the trolley, thus ensuring the oil injection effect and improving the quality of transformer products. Attached Figure Description

[0007] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the auxiliary tooling according to an embodiment of the present invention; Figure 2This is a schematic diagram of the structure of an oil pipeline according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the rotary joint according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the spherical bearing according to an embodiment of the present invention; In the diagram, 1. Rotary joint; 2. Outer spherical bearing; 3. Connecting flange; 4. Oil pipeline; 5. Chassis; 6. Rotary wheel; 7. Oil injection hose wound cylinder; 8. Pipeline joint one; 9. Pipeline joint two; 10. Pipeline joint three. Detailed Implementation

[0008] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0009] like Figure 1-4 As shown, a mobile transformer vacuum oil injection auxiliary tooling includes a frame structure 5, with outer spherical bearings 2 fixedly installed at both ends of the top of the frame 5 along its length. The oil supply pipeline 4 passes through the outer spherical bearings 2 at both ends and is rotatably connected to the outer spherical bearings 2.

[0010] The oil pipeline 4 is a three-way structure, including pipeline connector 8, pipeline connector 9, and pipeline connector 10. Pipeline connector 9 is located in the middle of the oil pipeline 4, while pipeline connector 8 and pipeline connector 10 are located at both ends of the oil pipeline 4. A connecting flange 3 is sealed and installed at pipeline connector 9, allowing for quick connection to the oil injection machine. A rotary joint 1 is sealed and installed at pipeline connector 8 and pipeline connector 10, allowing for quick connection to the oil injection hose, which in turn allows for quick connection to the transformer body's oil injection valve.

[0011] A frame-structured rotating wheel 6 is fixedly connected to the outer circumferential surface of both ends of the oil pipeline 4. The rotating wheel 6 is located inside the outer spherical bearing 2. A frame-structured oil injection hose winding cylinder 7 is fixedly installed between a pair of rotating wheels 6. The two ends of the oil injection hose winding cylinder 7 are fixedly connected to the adjacent sides of the pair of rotating wheels 6. A certain length of oil injection hose is wound around the oil injection hose winding cylinder 7. Figure 1 (The oil filling hose is not shown in the image). The oil filling hose has flanges sealingly connected to both ends. The frame structure can greatly reduce the weight of the tooling.

[0012] The oil pipeline 4 is made of high-strength rigid pipe.

[0013] The outer spherical bearing 2 is a thickened base type outer spherical bearing to provide sufficient mechanical strength, avoid friction and damage during rotation, and prevent cracks.

[0014] The mobile transformer vacuum oil injection auxiliary tooling provided in this embodiment of the invention is used as follows: The auxiliary tooling is placed on the transport trolley, and the oil pipeline 4 and the oil injection hose are transported to the transformer vacuum oil injection site by the transport trolley. The transport trolley and the frame 5 can effectively restrict the degree of freedom of the oil pipeline 4 in multiple directions.

[0015] Upon arrival at the site, without disassembling the oil pipeline 4, depending on the specific working space, connect the flange at one end of the oil injection hose to the rotary joint 1 at one end of the oil pipeline 4, seal the rotary joint 1 at the other end of the oil pipeline 4, and manually rotate the wheel 6 to release the oil injection hose wound around the cylinder 7 to the required length for oil injection. Then, connect the flange at the other end of the oil injection hose to the oil injection valve on the transformer body. During the process of rotating the wheel 6 to release the oil injection hose, the rotary joint can prevent wear between the flange of the oil injection hose and the oil pipeline 4.

[0016] The oil filling machine is sealed to the connecting flange 3, and vacuum oil filling is performed on the transformer body. With the effective restraint of the transport trolley and frame 5, the oil pipeline 4 can be prevented from violently shaking, swinging or axially moving during the oil filling process, ensuring the smooth delivery of transformer oil.

[0017] During the oil injection process, the length of the oil injection hose can be finely adjusted. Compared with the conventional flange connection structure, the rotary joint 1 is a rigid fixed connection that cannot be rotated. The rotary joint 1 can make the oil pipeline 4 rotate nearly 360° without stopping the equipment or the medium flowing continuously. The rotary joint 1 ensures a reliable seal during continuous rotation. Moreover, its sealing mechanism is dynamic compensation and active control, rather than relying entirely on the static tightening of bolts like the conventional flange connection structure, thus preventing oil leakage during rotation.

[0018] In the embodiments of the present invention, all technical features not described in detail are existing technologies or conventional technical means, and will not be repeated here.

[0019] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit them. The scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention.

Claims

1. A mobile transformer vacuum oil injection auxiliary tooling, comprising a frame (5), characterized in that, The frame (5) has two fixed outer spherical bearings (2) at both ends of the top length direction. The two ends of the rigid oil pipeline (4) pass through the outer spherical bearings (2) and are rotatably connected to the outer spherical bearings (2). The oil pipeline (4) is a three-way structure, including pipeline connector one (8), pipeline connector two (9) and pipeline connector three (10). The middle pipeline connector two (9) is sealed with a connecting flange (3). The pipeline connector one (8) and pipeline connector three (10) are sealed with a rotary joint (1). The outer circumferential surfaces of the two ends of the oil pipeline (4) are fixedly installed with a rotating wheel (6). The rotating wheel (6) is located inside the outer spherical bearing (2). The two ends of the oil injection hose winding cylinder (7) are fixedly connected to the adjacent sides of a pair of rotating wheels (6). The oil injection hose is wound on the oil injection hose winding cylinder (7). The oil injection hose is provided with flanges at both ends.

2. The mobile transformer vacuum oil injection auxiliary tooling according to claim 11, characterized in that, The frame (5), the wheel (6), and the oil injection hose winding cylinder (7) all adopt a frame structure.

3. The mobile transformer vacuum oil injection auxiliary tooling according to claim 11, characterized in that, The outer spherical bearing (2) is a base-thickened outer spherical bearing.

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