A transformer structure with an air layer in the tank cover

Abstract

The utility model discloses a kind of transformer structures with air layer of box cover, including box cover, air box, hanging plate, pressure release valve and protective baffle, the box cover top is fixedly provided with air box, the inside of the air box is communicated with the bottom of box cover, several hanging plates are fixedly arranged on the air box, the outer side wall of the air box is provided with the pressure release valve being communicated with the inside of air box, the outer side of the pressure release valve is provided with protective baffle, the height of transformer oil tank can be directly reduced, the pressure that oil expansion brings to oil tank caused by the temperature rise of transformer with load is relieved, oil tank processing and assembly are more convenient, transformer product overall appearance is more harmonious and beautiful, operation is safer and more reliable.

Description

Technical Field

[0001] This utility model relates to the technical field of transformer structures, and in particular to the technical field of a transformer structure with an air layer in the tank cover. Background Technology

[0002] The fully sealed transformer tank with a radiator structure will not expand. During transformer operation, the temperature rises, causing the oil to expand and increase in pressure. Overpressure in the transformer tank can lead to oil leakage. Therefore, an air layer must be set. In existing radiator-type fully sealed transformers, the air layer is located in the tank. The increased height of the air layer directly affects the processing and painting difficulty of the transformer tank. An excessively high tank brings many processing problems: multiple welding steps for panel splicing, easy deformation of the tank, and a height limit for the paint pool. Generally, the paint pool depth is 1.8 meters, and the tank height must be less than 1.8 meters. An excessively high tank makes painting difficult. Summary of the Invention

[0003] The purpose of this utility model is to solve the problems in the prior art and propose a transformer structure with an air layer in the tank cover, which can directly reduce the height of the transformer tank, alleviate the pressure on the tank caused by oil expansion due to transformer load heating, make tank processing and assembly more convenient, make the overall appearance of the transformer product more coordinated and beautiful, and make operation safer and more reliable.

[0004] To achieve the above objectives, this utility model proposes a transformer structure with an air layer in the cover, including a cover, an air box, a hanging plate, a pressure relief valve, and a protective baffle. The air box is fixedly installed on the top of the cover, and the interior of the air box is connected to the bottom of the cover. Several hanging plates are fixedly installed on the air box. A pressure relief valve connected to the interior of the air box is installed on the outer wall of the air box, and a protective baffle is installed on the outer side of the pressure relief valve.

[0005] Preferably, the connection between the air box and the lid is sealed and welded, and the inside of the lid is provided with several air vents that communicate with the air box.

[0006] Preferably, a pressure gauge connected to the interior of the air box is provided on the side of the pressure relief valve, and the pressure gauge is located inside the protective baffle.

[0007] Preferably, there are multiple hanging plates, which are evenly and symmetrically distributed on the top of the air box, and each hanging plate has a lifting hole that extends through it axially.

[0008] Preferably, the hanging plate is vertically welded to the top of the air box, and the hanging plate is arranged along the center line of the top of the air box.

[0009] Preferably, the air box is constructed by sealing and welding several 6mm steel plates.

[0010] Preferably, the protective baffle is an arc-shaped steel plate, and the protective baffle is fixedly welded to the outer wall of the air box.

[0011] The beneficial effects of this utility model are as follows: By combining the tank cover, air box, hanging plate, pressure relief valve and protective baffle, and through experimental optimization, this utility model can directly reduce the height of the oil tank. In terms of oil tank materials, instead of two splicing plates, only one plate is needed, reducing welding workload, reducing leakage points, facilitating painting, making assembly easier, and making the overall appearance of the transformer product more coordinated and beautiful. It also alleviates the pressure on the oil tank caused by oil expansion due to transformer load heating, making operation safer and more reliable.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a transformer structure with an air layer in the box cover according to this utility model.

[0014] In the diagram: 1-box cover, 2-air box, 3-hanging plate, 4-pressure relief valve, 5-protective baffle, 6-air inlet, 7-pressure gauge, 8-lifting hole. Detailed Implementation

[0015] See Figure 1 This utility model discloses a transformer structure with an air-insulated cover, comprising a cover 1, an air box 2, hanging plates 3, a pressure relief valve 4, and a protective baffle 5. The air box 2 is fixedly mounted on the top of the cover 1, and its interior is connected to the bottom of the cover 1. Several hanging plates 3 are fixedly mounted on the air box 2. A pressure relief valve 4, connected to the interior of the air box 2, is mounted on the outer wall of the air box 2, and a protective baffle 5 is mounted on the outer side of the pressure relief valve 4. The connection between the air box 2 and the cover 1 is sealed and welded together. Several air-insulated plates 3 are arranged through the interior of the cover 1, connected to the air box 2. The air inlet 6 and the pressure relief valve 4 are equipped with a pressure gauge 7 connected to the interior of the air box 2. The pressure gauge 7 is located inside the protective baffle 5. There are multiple hanging plates 3, which are evenly and symmetrically distributed on the top of the air box 2. The hanging plates 3 are axially penetratingly provided with lifting holes 8. The hanging plates 3 are vertically welded to the top of the air box 2. The hanging plates 3 are set along the center line of the top of the air box 2. The air box 2 is composed of several 6mm steel plates sealed and welded together. The protective baffle 5 is an arc-shaped steel plate, which is fixedly welded to the outer wall of the air box 2.

[0016] This utility model combines the tank cover 1, air box 2, hanging plate 3, pressure relief valve 4, and protective baffle 5 together. Through experimental optimization, it can directly reduce the height of the oil tank. In terms of oil tank materials, instead of two panels, only one panel is needed, reducing welding workload, reducing leakage points, facilitating painting, making assembly easier, and making the overall appearance of the transformer product more coordinated and beautiful. It also alleviates the pressure on the oil tank caused by oil expansion due to transformer load heating, making operation safer and more reliable.

[0017] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A transformer structure with an air layer in the cover, characterized in that: The device includes a lid (1), an air box (2), a hanging plate (3), a pressure relief valve (4), and a protective baffle (5). The lid (1) has an air box (2) fixedly installed on top. The interior of the air box (2) is connected to the bottom of the lid (1). Several hanging plates (3) are fixedly installed on the air box (2). The outer wall of the air box (2) is provided with a pressure relief valve (4) that is connected to the interior of the air box (2). The outer side of the pressure relief valve (4) is provided with a protective baffle (5).

2. The transformer structure with an air layer in the cover as described in claim 1, characterized in that: The connection between the air box (2) and the box cover (1) is sealed and welded. The inside of the box cover (1) is provided with several air inlets (6) that are connected to the air box (2).

3. The transformer structure with an air layer in the cover as described in claim 1, characterized in that: The pressure relief valve (4) is provided with a pressure gauge (7) connected to the interior of the air box (2) on its side, and the pressure gauge (7) is located inside the protective baffle (5).

4. The transformer structure with an air layer in the tank cover as described in claim 1, characterized in that: There are multiple hanging plates (3), which are evenly and symmetrically distributed on the top of the air box (2). The hanging plates (3) are provided with axially penetrating hanging holes (8).

5. The transformer structure with an air layer in the cover as described in claim 1, characterized in that: The hanging plate (3) is vertically welded to the top of the air box (2), and the hanging plate (3) is set along the center line of the top of the air box (2).

6. The transformer structure with an air layer in the tank cover as described in claim 1, characterized in that: The air box (2) is made of several 6mm steel plates sealed and welded together.

7. The transformer structure with an air layer in the tank cover as described in claim 1, characterized in that: The protective baffle (5) is an arc-shaped steel plate, and the protective baffle (5) is fixedly welded to the outer wall of the air box (2).

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