Explosion-proof protection type oil-immersed transformer

Abstract

The utility model discloses an explosion -proof protection type oil -immersed transformer, including transformer main part, one side fixedly connected with storage tank of transformer main part, one side fixedly connected with oil discharge pipe of storage tank, the upper surface fixedly connected with two delivery pipes and exhaust pipe of storage tank, one end of two delivery pipes extends to the inside of storage tank. The utility model discloses, through setting pressure -relief pipe, pressure -relief tank, sliding rod, extrusion board, connecting plate, plug and spring etc., when the transformer main part inside because of winding short circuit, bad contact or insulation ageing etc. will lead to partial high temperature, make insulation oil decomposition and produce gas, lead to internal pressure sharp rise, through high -pressure and lift plug, and the plug drives the connecting plate to compress two springs further, makes the plug and pressure -relief pipe separate, and the gas mixing with insulation oil in the transformer main part is spouted to the pressure -relief tank through the pressure -relief pipe, and the transformer main part inside is pressure -relieved, reduces the risk that the transformer main part inside leads to explosion because of pressure too high.

Description

Technical Field

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

[0002] Oil-immersed transformers provide excellent cooling, effectively controlling the temperature of the internal windings and thus improving their operating efficiency. As a result, they are widely used in various aspects of the power system.

[0003] However, in existing equipment, oil-immersed transformers may experience localized high temperatures due to faults such as winding short circuits, poor contact, or insulation aging. This causes the insulating oil to decompose and produce gas, leading to a sharp increase in internal pressure and increasing the risk of explosion. Therefore, an explosion-proof oil-immersed transformer has been proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an explosion-proof oil-immersed transformer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an explosion-proof oil-immersed transformer, comprising a transformer body, a storage tank fixedly connected to one side of the transformer body, an oil drain pipe fixedly connected to one side of the storage tank, an exhaust pipe and two conveying pipes fixedly connected to the upper surface of the storage tank, one end of the two conveying pipes extending into the interior of the storage tank, and a pressure relief structure provided on the transformer body;

[0006] The pressure relief structure includes a pressure relief pipe fixedly connected to the upper surface of the transformer body, with one end of the pressure relief pipe extending into the interior side of the transformer body.

[0007] As a further description of the above technical solution:

[0008] A pressure relief box is fixedly connected to the upper surface of the pressure relief pipe. The bottom of the pressure relief box is connected to the pressure relief pipe. The side of the pressure relief box that is away from the pipe is fixedly connected to one end of the corresponding delivery pipe.

[0009] As a further description of the above technical solution:

[0010] Inside the pressure relief box, two sliding rods are fixedly connected to opposite sides. A compression plate and a connecting plate are slidably connected to the two sliding rods. A plug is fixedly connected to the bottom of the connecting plate, and a rubber pad is fixedly provided on the outer wall of the plug.

[0011] As a further description of the above technical solution:

[0012] Each of the sliding rods is movably fitted with a spring, one end of each spring is fixedly connected to one side of the extrusion plate, and the other end is fixedly connected to one side of the connecting plate.

[0013] As a further description of the above technical solution:

[0014] The upper surface of the pressure relief box is threaded with a threaded rod, the bottom of which is rotatably connected to the upper surface of the extrusion plate, and an adjustment knob is fixedly connected to the upper surface of the threaded rod.

[0015] As a further description of the above technical solution:

[0016] The upper surface of the storage box is fixedly connected to four support columns, and the upper surfaces of the four support columns are all fixedly connected to a shielding canopy.

[0017] As a further description of the above technical solution:

[0018] Multiple heat sinks are fixedly connected to the side of the transformer body that is far apart from each other. Four support blocks are fixedly connected to the bottom of the transformer body. The bottom of two support blocks located on the same side are fixedly connected to a mounting plate.

[0019] This utility model has the following beneficial effects:

[0020] 1. Compared with existing technologies, this explosion-proof oil-immersed transformer, through the installation of pressure relief pipes, pressure relief boxes, sliding rods, compression plates, connecting plates, plugs, and springs, can prevent localized high temperatures caused by faults such as short circuits in the windings, poor contact, or insulation aging inside the transformer body. This causes the insulating oil to decompose and produce gas, leading to a sharp increase in internal pressure. The high pressure then lifts the plug, which in turn drives the connecting plate to further compress the two springs, separating the plug from the pressure relief pipe. The gas inside the transformer body, mixed with the insulating oil, is then sprayed into the pressure relief box through the pressure relief pipe, relieving pressure inside the transformer body and reducing the risk of explosion due to excessive pressure inside the transformer body.

[0021] 2. Compared with existing technologies, this explosion-proof oil-immersed transformer, by setting up a storage tank, exhaust pipe and conveying pipe, transports the gas-liquid mixture to the storage tank through two conveying pipes. The insulating oil, due to its higher density, settles at the bottom of the storage tank, and the gas is discharged outward through the exhaust pipe, reducing the probability of insulating oil splashing everywhere due to high voltage. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the explosion-proof oil-immersed transformer proposed in this utility model.

[0023] Figure 2 This is a plan view of the explosion-proof oil-immersed transformer proposed in this utility model;

[0024] Figure 3 This is a cross-sectional view of the pressure relief box of the explosion-proof oil-immersed transformer proposed in this utility model;

[0025] Figure 4 This is an exploded view of the pressure relief structure of the explosion-proof oil-immersed transformer proposed in this utility model;

[0026] Figure 5 This is a cross-sectional view of the storage tank of the explosion-proof oil-immersed transformer proposed in this utility model;

[0027] Figure 6 This is an exploded view of the storage tank and conveying pipe of the explosion-proof oil-immersed transformer proposed in this utility model.

[0028] Legend:

[0029] 1. Transformer body; 2. Storage tank; 3. Oil drain pipe; 4. Exhaust pipe; 5. Support column; 6. Shelter; 7. Pressure relief structure; 701. Pressure relief pipe; 702. Pressure relief box; 703. Sliding rod; 704. Extrusion plate; 705. Connecting plate; 706. Plug; 707. Spring; 708. Threaded rod; 709. Adjusting knob; 8. Delivery pipe; 9. Heat sink; 10. Support block; 11. Mounting plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1 to 6 The explosion-proof oil-immersed transformer provided by this utility model includes a transformer body 1. Multiple heat sinks 9 are fixedly connected to the opposite side of the transformer body 1. Four support blocks 10 are fixedly connected to the bottom of the transformer body 1. The bottom of two support blocks 10 on the same side are fixedly connected to a mounting plate 11. A storage tank 2 is fixedly connected to one side of the transformer body 1. An oil drain pipe 3 is fixedly connected to one side of the storage tank 2. Four support columns 5 are fixedly connected to the upper surface of the storage tank 2. A shielding canopy 6 is fixedly connected to the upper surface of the four support columns 5. The shielding canopy 6 covers the exhaust pipe 4 to reduce the probability of rainwater flowing into the storage tank 2 through the exhaust pipe 4. A pressure relief structure 7 is provided on the transformer body 1.

[0032] In order to achieve the purpose of storing insulating oil, an exhaust pipe 4 and two conveying pipes 8 are fixedly connected to the upper surface of the storage box 2. One end of the two conveying pipes 8 extends into the interior of the storage box 2. The gas-liquid mixture is transported into the storage box 2 through the two conveying pipes 8. The insulating oil, due to its high density, settles at the bottom of the storage box 2. The gas is discharged outward through the exhaust pipe 4, reducing the chance of insulating oil splashing everywhere due to high voltage.

[0033] To achieve automatic pressure relief, the pressure relief structure 7 includes a pressure relief pipe 701 fixedly connected to the upper surface of the transformer body 1. One end of the pressure relief pipe 701 extends into the interior of the transformer body 1. A pressure relief box 702 is fixedly connected to the upper surface of the pressure relief pipe 701. The bottom of the pressure relief box 702 is connected to the pressure relief pipe 701. The opposite sides of the pressure relief box 702 are fixedly connected to one end of the corresponding conveying pipe 8. Two sliding rods 703 are fixedly connected to opposite sides inside the pressure relief box 702. A pressing plate 704 and a connecting plate 705 are slidably connected to the two sliding rods 703. A spring 707 is movably sleeved on each sliding rod 703. One end of each spring 707 is fixedly connected to one side of the pressing plate 704. One end is fixedly connected to the other end, and the other end is fixedly connected to one side of the connecting plate 705. A plug 706 is fixedly connected to the bottom of the connecting plate 705. A rubber pad is fixedly installed on the outer wall of the plug 706. When the transformer body 1 is damaged by a short circuit in the winding, poor contact, or insulation aging, local high temperature will occur, causing the insulating oil to decompose and produce gas, resulting in a sharp increase in internal pressure. The plug 706 is lifted by high pressure. The plug 706 drives the connecting plate 705 to further compress the two springs 707, so that the plug 706 is separated from the pressure relief pipe 701. The gas inside the transformer body 1 mixed with the insulating oil is sprayed into the pressure relief box 702 through the pressure relief pipe 701 to relieve the pressure inside the transformer body 1 and reduce the risk of explosion caused by excessive pressure inside the transformer body 1.

[0034] To achieve the adjustment purpose, a threaded rod 708 is threadedly connected to the upper surface of the pressure relief box 702. The bottom of the threaded rod 708 is rotatably connected to the upper surface of the extrusion plate 704. An adjustment knob 709 is fixedly connected to the upper surface of the threaded rod 708. The adjustment knob 709 is rotated according to the sealing force, which drives the threaded rod 708 to rotate. The threaded rod 708 pushes the extrusion plate 704 to move. The extrusion plate 704 compresses two springs 707, which causes the connecting plate 705 to drive the plug 706 to seal the pressure relief pipe 701.

[0035] Working principle: Adjusting knob 709 is rotated according to the sealing force. Knob 709 rotates threaded rod 708, which in turn moves pressing plate 704. Pressing plate 704 compresses two springs 707, causing connecting plate 705 to move plug 706 to seal pressure relief pipe 701. When a fault such as winding short circuit, poor contact, or insulation aging causes localized high temperature inside the transformer body 1, the insulating oil decomposes to produce gas, leading to a sharp increase in internal pressure. High pressure then lifts plug 706, which in turn causes connecting plate 705 to further compress the two springs 707, separating plug 706 from pressure relief pipe 701. The gas inside the transformer body 1, mixed with insulating oil, is sprayed through pressure relief pipe 701 into pressure relief box 702, relieving pressure inside the transformer body 1 and reducing the risk of explosion due to excessive pressure. The gas-liquid mixture is transported to the storage tank 2 through two conveying pipes 8. Due to its higher density, the insulating oil settles at the bottom of the storage tank 2, and the gas is discharged outward through the exhaust pipe 4, reducing the chance of the insulating oil splashing everywhere due to high voltage.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Oil-immersed transformer with explosion protection, comprising a transformer body (1), characterized in that: A storage tank (2) is fixedly connected to one side of the transformer body (1), an oil drain pipe (3) is fixedly connected to one side of the storage tank (2), an exhaust pipe (4) and two conveying pipes (8) are fixedly connected to the upper surface of the storage tank (2), one end of the two conveying pipes (8) extends into the interior of the storage tank (2), and a pressure relief structure (7) is provided on the transformer body (1). The pressure relief structure (7) includes a pressure relief pipe (701) fixedly connected to the upper surface of the transformer body (1), one end of which extends into the interior side of the transformer body (1).

2. The explosion-proof transformer according to claim 1, characterized in that: The pressure relief pipe (701) is fixedly connected to a pressure relief box (702). The bottom of the pressure relief box (702) is connected to the pressure relief pipe (701). The side of the pressure relief box (702) that is away from each other is fixedly connected to one end of the corresponding conveying pipe (8).

3. The explosion-proof transformer according to claim 2, characterized in that: The pressure relief box (702) has two sliding rods (703) fixedly connected to each other on opposite sides. The two sliding rods (703) are slidably connected to a compression plate (704) and a connecting plate (705). A plug (706) is fixedly connected to the bottom of the connecting plate (705), and a rubber pad is fixedly provided on the outer wall of the plug (706).

4. The explosion-proof transformer according to claim 3, characterized in that: Each of the sliding rods (703) is movably fitted with a spring (707), one end of each spring (707) is fixedly connected to one side of the extrusion plate (704), and the other end is fixedly connected to one side of the connecting plate (705).

5. The explosion-proof transformer according to claim 3, characterized in that: The upper surface of the pressure relief box (702) is threadedly connected to a threaded rod (708), the bottom of which is rotatably connected to the upper surface of the extrusion plate (704), and an adjustment knob (709) is fixedly connected to the upper surface of the threaded rod (708).

6. The explosion-proof transformer according to claim 1, characterized in that: The upper surface of the storage box (2) is fixedly connected to four support columns (5), and the upper surfaces of the four support columns (5) are jointly fixedly connected to a canopy (6).

7. The explosion-proof transformer according to claim 1, characterized in that: Multiple heat sinks (9) are fixedly connected to the opposite side of the transformer body (1). Four support blocks (10) are fixedly connected to the bottom of the transformer body (1). The bottom of two support blocks (10) located on the same side are fixedly connected to a mounting plate (11).

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