Barrel type transformer

Abstract

The utility model discloses a barrel type transformer which comprises a barrel body, a barrel cover covering the top of the barrel body, a sealing piece and a hoop, the top of the barrel body is provided with a flange, the flange is located on the outer side wall of the barrel body, the outer side of the barrel cover is provided with a limiting edge extending downwards, and a sealing groove is formed between the limiting edge and the flange; the sealing piece is arranged in the sealing groove, and the bottom of the sealing piece abuts against the top of the flange. The hoop is arranged on the outer side of the barrel cover and the outer side of the flange in a surrounding mode. According to the barrel-type transformer disclosed by the invention, the limiting edge arranged at the bottom of the barrel cover and the flange arranged on the outer side of the top of the barrel body are matched with the sealing piece, so that the sealing performance of the barrel-type transformer can be effectively improved, and the possibility of oil leakage is greatly reduced; and the connection tightness between the barrel body and the barrel cover is further enhanced through the hoop, so that the possibility of leakage is further reduced, the insulation performance of the barrel-type transformer is ensured, and the stability of the barrel-type transformer during working is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a barrel-type transformer. Background Art

[0002] Barrel-type transformer, also known as box-type transformer or prefabricated substation, is a prefabricated complete set of power distribution equipment. It combines traditional transformers, high-voltage electrical equipment, low-voltage electrical equipment, electric energy metering equipment and reactive power compensation devices into a whole according to a certain wiring scheme, and places it in a closed casing of a box-type structure made of steel plates or other materials; barrel-type transformers have the characteristics of pre-installation, compactness, mobility and high safety. They are widely used in residential areas, urban public substations, highways, tunnels, bridges, mines, petroleum, chemical industry, metallurgy, airports, docks, enterprises and power distribution systems of high-rise buildings.

[0003] Existing barrel-type transformers have the problem of insufficient sealing during operation, resulting in leakage of transformer oil or other internal liquids. Since transformer oil is an important part to ensure the internal insulation performance of the equipment, when the sealing is damaged and oil leakage occurs, the insulation performance of the equipment will be affected, thereby increasing the risk of electrical failure; and poor sealing may cause external moisture to invade the transformer. The leaked transformer oil or intrusive external moisture will change the thermal balance inside the equipment, resulting in local overheating or uneven temperature, thereby affecting the stable operation of the transformer.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a barrel-type transformer, which has the advantages of tight connection and good sealing performance, and can effectively reduce the possibility of oil leakage problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A barrel-type transformer comprises a barrel body, a barrel cover covering the top of the barrel body, a seal and a hoop, wherein a flange is arranged on the top of the barrel body, and the flange is located on the outer side wall of the barrel body; a downwardly extending limiting edge is arranged on the outer side of the barrel cover, and a sealing groove is formed between the limiting edge and the flange; the seal is arranged in the sealing groove, and its bottom abuts against the top of the flange; the hoop is arranged around the barrel cover and the outer side of the flange.

[0008] In the barrel-type transformer, the clamp includes a clamp body and a fixing piece, a first connecting piece is provided at one end of the clamp body, and a second connecting piece is provided at the other end of the clamp body, and the fixing piece is detachably connected to the first connecting piece and the second connecting piece respectively.

[0009] In the barrel-type transformer, a first surrounding edge extending toward the barrel cover is provided at the top of the hoop body, and a second surrounding edge extending toward the barrel body is provided at the bottom of the hoop body. The first surrounding edge abuts against the top of the limiting edge, and the second surrounding edge abuts against the bottom of the flange.

[0010] In the barrel-type transformer, the sealing member is a sealing ring made of nitrile, the sealing ring is a one-time molded sealing ring, and the top and bottom of the sealing ring are both provided with inclined surfaces.

[0011] In the barrel-type transformer, the barrel body includes a barrel wall and a barrel bottom, the barrel wall is arranged around the outside of the barrel bottom, the barrel bottom is located at the bottom of the barrel wall, the barrel cover is covered on the top of the barrel wall, and the flange is arranged on the outside of the top of the barrel wall; a cross reinforcement rib is arranged in the barrel body, and the cross reinforcement rib is arranged at the top of the barrel bottom.

[0012] In the barrel-type transformer, the barrel wall is a barrel wall formed by barrel rolling of a whole plate.

[0013] The barrel-type transformer further comprises a high-voltage bushing and a low-voltage bushing, wherein the high-voltage bushing is arranged on the barrel cover, and the low-voltage bushing is arranged on the side of the barrel body.

[0014] In the barrel-type transformer, a sealing strip is provided at the connection between the low-voltage bushing and the barrel body.

[0015] In the barrel-type transformer, hanging plates are respectively arranged on both sides of the barrel body.

[0016] In the barrel-type transformer, a first suspension and a second suspension are provided on the side of the barrel body, and the first suspension and the second suspension are arranged up and down.

[0017] Beneficial effects:

[0018] The utility model provides a barrel-type transformer, which can effectively improve the sealing performance of the barrel-type transformer and greatly reduce the possibility of oil leakage by means of a limiting edge arranged at the bottom of the barrel cover and a flange arranged at the outer side of the top of the barrel body in combination with a sealing member; and further strengthen the connection tightness between the barrel body and the barrel cover by means of a clamp to further reduce the possibility of leakage, ensure that the inside of the barrel-type transformer has better insulation performance, and improve the stability of the barrel-type transformer during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A first structural schematic diagram of the barrel-type transformer provided by the utility model;

[0020] Figure 2A second structural schematic diagram of the barrel-type transformer provided by the utility model;

[0021] Figure 3 A partial side cross-sectional view of the barrel-type transformer provided by the utility model;

[0022] Figure 4 A partial top-sectional view of the barrel-type transformer provided by the utility model;

[0023] Figure 5 This is a side view of the seal provided by the utility model.

[0024] Explanation of the main component symbols: 1-barrel body, 12-barrel wall, 13-barrel bottom, 14-flange, 15-hanging plate, 16-first hanging, 17-second hanging, 18-cross reinforcement rib, 2-barrel cover, 21-limiting edge, 3-seal, 31-inclined surface, 4-hoop, 41-hoop body, 411-first surrounding edge, 412-second surrounding edge, 42-first connecting piece, 43-second connecting piece, 44-fixing piece, 5-high-voltage bushing, 6-low-voltage bushing, 61-sealing strip. DETAILED DESCRIPTION

[0025] The utility model provides a barrel-type transformer. To make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail below with reference to the accompanying drawings and examples.

[0026] In the description of the present invention, it should be understood that the terms "top", "bottom", "outside", "inside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and should not be understood as a limitation on the present invention; in addition, the terms "installation", "connection", etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0027] See also Figures 1 to 5 The utility model provides a barrel-type transformer, comprising a barrel body 1, a barrel cover 2 covering the top of the barrel body 1, a seal 3 and a hoop 4, the top of the barrel body 1 is provided with a flange 14, the flange 14 is located on the outer side wall of the barrel body 1, the outer side of the barrel cover 2 is provided with a limiting edge 21 extending downward, and a sealing groove is formed between the limiting edge 21 and the flange 14; the seal 3 is arranged in the sealing groove, and its bottom is abutted against the top of the flange 14; the hoop 4 is surrounded by the barrel cover 2 and the outer side of the flange 14.

[0028] The present application discloses a barrel-type transformer, which can effectively improve the sealing performance of the barrel-type transformer and greatly reduce the possibility of oil leakage by means of a limiting edge 21 arranged at the bottom of the barrel cover 2 and a flange 14 arranged at the outer side of the top of the barrel body 1 in combination with a seal 3; and further strengthen the connection tightness between the barrel body 1 and the barrel cover 2 by means of a clamp 4 to further reduce the possibility of leakage, ensure that the barrel-type transformer has better insulation performance inside, and improve the stability of the barrel-type transformer during operation.

[0029] For further information, see Figure 1 and Figure 2 The hoop 4 includes a hoop body 41 and a fixing member 44. A first connecting member 42 is provided at one end of the hoop body 41, and a second connecting member 43 is provided at the other end of the hoop body 41. The fixing member 44 is detachably connected to the first connecting member 42 and the second connecting member 43 respectively.

[0030] In this embodiment, the first connecting member 42 and the second connecting member 43 have the same structure. The first connecting member 42 includes a connecting plate and a connecting ring. One side of the connecting member is connected to the hoop body 41, and the connecting ring is arranged on the other side of the connecting plate. The connecting plate, the connecting ring and the hoop body 41 are formed in one piece. The fixing member 44 includes a screw and a nut. The screw is respectively connected to the two connecting rings, and a detachable connection between the screw and the two connecting rings is achieved through the nut.

[0031] In this embodiment, by providing the clamp 4, uniform and strong pressure can be provided, so that the connection between the barrel body 1 and the barrel cover 2 is tighter, and the gap between the barrel body 1 and the barrel cover 2 is effectively closed, thereby improving the overall sealing performance, reducing the possibility of liquid or gas leakage, and ensuring the stability of the overall structure. Furthermore, the clamp 4 has a certain elasticity and adjustability, and can adapt to barrel bodies 1 and barrel covers 2 of different sizes or slight deformations, thereby improving its adaptability and versatility in application; further, the first connecting member 42, the second connecting member 43 and the fixing member 44 are used to realize a detachable connection between the clamp 4 and the barrel body 1 and the barrel cover 2, thereby greatly improving the convenience of operation in actual applications and facilitating repair and maintenance.

[0032] For further information, see Figure 3 The top of the hoop body 41 is provided with a first surrounding edge 411 extending toward the barrel cover 2, and the bottom of the hoop body 41 is provided with a second surrounding edge 412 extending toward the barrel body 1. The first surrounding edge 411 abuts against the top of the limiting edge 21, and the second surrounding edge 412 abuts against the bottom of the flange 14.

[0033] In this embodiment, the first surrounding edge 411, the hoop body 41 and the second surrounding edge 412 are integrally formed. By providing the first surrounding edge 411 that cooperates with the top of the limiting edge 21 and then providing the second surrounding edge 412 that cooperates with the bottom of the flange 14, the connection tightness between the hoop body 41 and the barrel body 1 and the barrel cover 2 can be improved, and the force uniformity of the limiting edge 21 and the flange 14 can be improved, thereby ensuring the pressure effect of the hoop body 41 on the barrel cover 2 and the barrel body 1.

[0034] For further information, see Figure 5 The sealing member 3 is a sealing ring made of nitrile, the sealing ring is a one-time molded sealing ring, and the top and bottom of the sealing ring are both provided with inclined surfaces 31.

[0035] In the present embodiment, the sealing ring is arranged between the limiting edge 21 and the flange 14. Compared with the existing transformer in which the sealing ring is arranged between the barrel cover 2 and the barrel body 1, the barrel-type transformer disclosed in the present application does not need to add additional sealing grooves or complex structures at the bottom of the barrel cover 2 or the top of the barrel body 1, thereby reducing the manufacturing cost. In addition, the space between the flange 14 and the surrounding edge provides a stable compression space for the seal 3, thereby ensuring that a good sealing effect can be maintained under various conditions to prevent liquid or gas leakage. Furthermore, since the seal 3 is located between the flange 14 and the surrounding edge, the installation and disassembly process of the barrel cover 2 is smoother, and there is no need to worry about the seal 3 being misplaced or damaged. In addition, the design of the flange 14 and the surrounding edge provides more protection for the seal 3, reduces the direct impact of the external environment on it, and thus extends the service life of the seal 3.

[0036] In this embodiment, the sealing ring is made of nitrile material and combined with a one-time molding process, which has multiple advantages; first, nitrile, as a high-performance rubber material, has excellent oil resistance, wear resistance, chemical corrosion resistance and other properties, which enables the sealing ring to maintain stability and durability in complex working environments; secondly, the one-time molding process ensures the structural integrity and performance uniformity of the sealing ring, reduces performance losses and structural defects that may be caused by multiple processing, and enables the sealing ring to maintain the optimal performance of the original design.

[0037] In this embodiment, the top and bottom of the sealing ring are both provided with a certain slope. The slope design helps to form a closer contact between the sealing ring and the sealing surface, thereby enhancing the sealing effect and reducing the possibility of leakage. It can also increase the adaptability range of the sealing ring so that it can still maintain a good sealing effect on a sealing surface with certain errors or irregularities. Furthermore, when the sealing ring is in reciprocating or rotational motion, the slope design can reduce the frictional resistance between the sealing ring and the sealing surface, so that when the sealing ring is compressed and deformed, the force is more uniform, which helps to reduce stress concentration on the surface of the sealing ring, thereby reducing wear and extending the service life of the sealing ring.

[0038] For further information, see Figure 1 and Figure 4 The barrel body 1 includes a barrel wall 12 and a barrel bottom 13, the barrel wall 12 is arranged on the outside of the barrel bottom 13, the barrel bottom 13 is located at the bottom of the barrel wall 12, the barrel cover 2 covers the top of the barrel wall 12, and the flange 14 is arranged on the outside of the top of the barrel wall 12; a cross reinforcement rib 18 is arranged in the barrel body 1, and the cross reinforcement rib 18 is arranged on the top of the barrel bottom 13.

[0039] In this embodiment, the barrel wall 12 is welded to the barrel bottom 13, and the cross reinforcement ribs 18 are fixed to the top of the barrel bottom 13 by nuts; the purpose of arranging the cross reinforcement ribs 18 at the bottom of the barrel bottom 13 is to enhance the structural strength of the barrel body 1 and improve its ability to withstand pressure; this design can ensure that the barrel body 1 is not easily deformed or broken when loaded with heavy objects or subjected to external pressure, thereby ensuring its stability and safety, and can effectively disperse the pressure of the barrel bottom 13, making the barrel body 1 more sturdy and durable.

[0040] Furthermore, the barrel wall 12 is a barrel wall 12 formed by rolling a whole plate.

[0041] In this embodiment, the barrel wall 12 is formed by a whole piece of plate by barrel rolling and undergoes a sheet metal upsetting process. The barrel rolling of the whole piece of plate ensures the integrity and uniformity of the barrel body 1 structure, avoids structural defects caused by processes such as splicing and welding, and thus significantly improves the strength and stability of the barrel body 1; this structure can exhibit better resistance when subjected to external pressure, impact or heavy load, thereby ensuring the safety and reliability of the barrel body 1; the sheet metal upsetting process can make the surface of the barrel body 1 smoother and neater, without obvious bumps and flaws, thereby improving the overall aesthetics of the product, and can effectively prevent corrosion and wear, thereby extending the service life of the barrel body 1.

[0042] For further information, see Figure 1 and Figure 2 The barrel-type transformer also includes a high-voltage bushing 5 and a low-voltage bushing 6 , wherein the high-voltage bushing 5 is arranged on the barrel cover 2 , and the low-voltage bushing 6 is arranged on the side of the barrel body 1 .

[0043] In this embodiment, the high-voltage bushings 5 ​​include two, and the two high-voltage bushings 5 ​​are respectively arranged on the barrel cover 2. The high-voltage bushings 5 ​​are existing technologies and play the role of electrical insulation, support and protection of high-voltage wires; the low-voltage bushings 6 include three, and the three low-voltage bushings 6 are respectively arranged on the sides of the barrel body 1. The low-voltage bushings 6 are existing technologies and play the role of electrical insulation, connection and transmission of electric energy.

[0044] For further information, see Figure 4A sealing strip 61 is provided at the connection between the low-pressure bushing 6 and the barrel body 1 .

[0045] In this embodiment, by providing a sealing strip 61, the connection tightness between the low-voltage bushing 6 and the barrel body 1 can be improved, and the possibility of leakage problems in the barrel-type transformer can be further reduced; the sealing strip 61 can be a rubber strip.

[0046] For further information, see Figure 1 and Figure 2 Hanging plates 15 are respectively provided on both sides of the barrel body 1.

[0047] In this embodiment, the hanging plate 15 is welded to the barrel body 1; the hanging plate 15 is used to fix the barrel-type transformer after it is lifted, that is, to achieve a fixed connection between the barrel-type transformer and a fixing device.

[0048] For further information, see Figure 1 and Figure 2 The side of the barrel body 1 is provided with a first suspension 16 and a second suspension 17, and the first suspension 16 and the second suspension 17 are arranged up and down.

[0049] In this embodiment, the first hanger 16 and the second hanger 17 have the same structure, and the first hanger 16 and the second hanger 17 are respectively welded to the barrel body 1; the first hanger 16 and the second hanger 17 are used to realize the lifting and suspension of the barrel-type transformer as a whole. By using the hanger, the transformer can be conveniently lifted as a whole for installation, transportation or maintenance operations; at the same time, the hanger can also ensure the stability and safety of the barrel-type transformer during the lifting process, and prevent the barrel-type transformer from being damaged due to shaking or tilting.

[0050] In this example, see Figure 1 The first suspension 16 is a U-shaped plate, and a connecting groove is provided on a side of the U-shaped plate away from the barrel body 1.

[0051] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A barrel-type transformer, comprising a barrel body and a barrel cover covering the top of the barrel body, characterized in that: It also includes a seal and a hoop. A flange is provided on the top of the barrel body, and the flange is located on the outer side wall of the barrel body. A downwardly extending limiting edge is provided on the outer side of the barrel cover, and a sealing groove is formed between the limiting edge and the flange. The seal is provided in the sealing groove, and its bottom abuts against the top of the flange. The hoop is surrounded by the barrel cover and the outer side of the flange.

2. A barrel-type transformer according to claim 1, characterized in that: The hoop comprises a hoop body and a fixing member, a first connecting member is arranged at one end of the hoop body, and a second connecting member is arranged at the other end of the hoop body, and the fixing member is detachably connected to the first connecting member and the second connecting member respectively.

3. A barrel-type transformer according to claim 2, characterized in that: The top of the hoop body is provided with a first surrounding edge extending toward the barrel cover, and the bottom of the hoop body is provided with a second surrounding edge extending toward the barrel body. The first surrounding edge abuts against the top of the limiting edge, and the second surrounding edge abuts against the bottom of the flange.

4. The barrel-type transformer according to claim 1, characterized in that: The sealing member is a sealing ring made of nitrile, the sealing ring is a one-time molded sealing ring, and the top and bottom of the sealing ring are both provided with inclined surfaces.

5. The barrel-type transformer according to claim 1, characterized in that: The barrel body includes a barrel wall and a barrel bottom, the barrel wall is arranged on the outside of the barrel bottom, the barrel bottom is located at the bottom of the barrel wall, the barrel cover is covered on the top of the barrel wall, and the flange is arranged on the outside of the top of the barrel wall; cross reinforcement ribs are arranged in the barrel body, and the cross reinforcement ribs are arranged on the top of the barrel bottom.

6. The barrel-type transformer according to claim 5, characterized in that: The barrel wall is a barrel wall formed by rolling a whole plate.

7. The barrel-type transformer according to claim 1, characterized in that: It also includes a high-pressure bushing and a low-pressure bushing, wherein the high-pressure bushing is arranged on the barrel cover, and the low-pressure bushing is arranged on the side of the barrel body.

8. The barrel-type transformer according to claim 7, characterized in that: A sealing strip is provided at the connection between the low-pressure sleeve and the barrel body.

9. The barrel-type transformer according to claim 1, characterized in that: Hanging plates are respectively arranged on both sides of the barrel body.

10. The barrel-type transformer according to claim 1, characterized in that: The side of the barrel body is provided with a first suspension and a second suspension, and the first suspension and the second suspension are arranged up and down.

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