Connection structure of transformer and circuit breaker and power distribution equipment
By using a combined structure of copper strip and soft connecting plate in a box transformer to buffer the vibration of the equipment, the damage and oil leakage of copper strips caused by the connection between the circuit breaker and the transformer is solved, and a more stable equipment installation and operation is achieved.
Patent Information
- Application Number
- CN202420019232.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-04
AI Technical Summary
The connection between the existing box transformer circuit breaker and the transformer causes the copper velocity to easily damage the transformer overlap end, which may cause the risk of oil leakage, especially when the equipment is transported and operated.
A connection structure between a transformer and a circuit breaker is designed, using a combination of a copper bar and a soft connecting piece, which includes vertically connected transverse and longitudinal connecting parts, and the soft connecting piece includes a bendable multi-layer metal foil through the transformer and A soft connection piece is installed between the circuit breakers to buffer vibration and reduce the movement of the transformer overlap end.
It effectively avoids damage to the transformer overlap end by the copper velocity, reduces the risk of oil leakage, and simplifies the installation process.
Smart Images
Figure CN222190414U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power distribution equipment, in particular to a connection structure of a transformer and a circuit breaker and power distribution equipment. Background Art
[0002] Box transformer (also known as box substation) is a kind of high-voltage switchgear, distribution transformer and low-voltage distribution device, which are prefabricated indoor and outdoor compact distribution equipment arranged in one according to a certain wiring scheme. It organically combines the functions of high-voltage power receiving, transformer step-down, low-voltage distribution, etc. It is installed in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, anti-theft, heat-insulated, fully enclosed, movable steel structure box. It is a mechatronic, fully enclosed operation power transmission and transformation equipment. This power transmission and transformation equipment concentrates the traditional transformer in the box-type shell, with small size, light weight, low noise, low loss and high reliability.
[0003] The inventor has found that the connection height difference between the circuit breaker and the transformer in the current box-type transformer is high and the front-to-back distance is large. The connection between the circuit breaker and the transformer is usually a hard copper bar direct connection. The vibration generated during long-distance transportation and operation of the equipment causes the copper bar to damage the overlapping end of the transformer, which is very likely to cause oil leakage. Utility Model Content
[0004] The utility model aims to provide a connection structure of a transformer and a circuit breaker and a power distribution device, which can prevent the copper busbar from damaging the overlapping end of the transformer, facilitate installation, and prevent the risk of oil leakage.
[0005] The embodiment of the utility model is achieved as follows:
[0006] In a first aspect, the utility model provides a connection structure between a transformer and a circuit breaker, comprising:
[0007] Box;
[0008] A circuit breaker, the circuit breaker being installed on one side of the box;
[0009] A transformer, the transformer being installed in the box on the other side of the circuit breaker, and the transformer and the circuit breaker are located at different heights;
[0010] A copper busbar, the copper busbar comprising a transverse connecting portion and a longitudinal connecting portion vertically connected to each other, one end of the transverse connecting portion being connected to the circuit breaker;
[0011] A soft connecting piece, the soft connecting piece comprising a first connecting part, a second connecting part and a soft connecting part connected between the first connecting part and the second connecting part, the first connecting part is connected to one end of the longitudinal connecting part, the second connecting part is connected to the transformer, and the soft connecting part can be bent and deformed.
[0012] In an optional embodiment, the first connecting portion and the second connecting portion are metal plates, and bolt holes are formed on the metal plates.
[0013] In an optional embodiment, the soft connection portion includes multiple layers of metal foil, the metal foil is overlapped and has two ends respectively connected to the first connection portion and the second connection portion.
[0014] In an optional embodiment, the thickness of the metal foil is 0.1-0.2 mm.
[0015] In an optional embodiment, the first connecting portion, the soft connecting portion and the second connecting portion have the same thickness.
[0016] In an optional embodiment, a fixing frame is further provided in the box body, and the fixing frame is fixedly connected to the inner wall of the box body, and the fixing frame is fixedly connected to the transverse connecting portion via a connecting piece.
[0017] In an optional embodiment, the connecting member is made of insulating material, the fixing frame is connected to one end of the connecting member via bolts, and the other end of the connecting member is connected to the transverse connecting portion via bolts.
[0018] In an optional embodiment, the number of the copper bars is at least two, the number of the soft connecting sheets is at least two, and the first connecting portion and the longitudinal connecting portion are arranged in sequence at intervals and connected by bolts.
[0019] In an optional embodiment, the box body includes a first chamber and a second chamber, the circuit breaker is arranged in the first chamber, the transformer is arranged in the second chamber, a wall bushing is provided between the first chamber and the second chamber, one end of the wall bushing is connected to the transformer, and the other end is connected to the second connecting part, and the copper busbar and the flexible connecting piece are located in the first chamber.
[0020] In a second aspect, the utility model provides a power distribution device, comprising a connection structure of a transformer and a circuit breaker as described in any one of the aforementioned embodiments.
[0021] The beneficial effects of the embodiments of the utility model are:
[0022] The utility model includes a box, a circuit breaker, a transformer, a copper busbar and a flexible connection piece. The circuit breaker is installed on one side of the box, and the transformer is installed on the other side of the box relative to the circuit breaker, and the transformer and the circuit breaker are located at different heights. The copper busbar includes a transverse connection part and a longitudinal connection part vertically connected to each other. One end of the transverse connection part is connected to the circuit breaker. The flexible connection piece includes a first connection part, a second connection part and a flexible connection part connected between the first connection part and the second connection part. The first connection part is connected to one end of the longitudinal connection part. The second connection part is connected to the transformer. The flexible connection part can be bent and deformed. By arranging the flexible connection piece between the copper busbar and the transformer, when the equipment is transported over a long distance and vibrates during operation, the copper busbar vibrates to drive the first connection part to move, so that the flexible connection part is deformed, thereby buffering the vibration, reducing or avoiding the second connection part driving the overlapping end of the transformer to move, and avoiding the copper busbar from damaging the overlapping end of the transformer, facilitating installation, and preventing the risk of oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 A schematic diagram of the connection structure of a transformer and a circuit breaker provided in an embodiment of the utility model;
[0025] Figure 2 In the embodiment of the utility model Figure 1 Enlarged view of part A in the middle;
[0026] Figure 3 A schematic structural diagram of a flexible connecting piece provided in an embodiment of the utility model.
[0027] Icons: 100-connection structure between transformer and circuit breaker; 10-box; 11-first chamber; 12-second chamber; 20-circuit breaker; 30-transformer; 31-wall bushing; 40-copper busbar; 41-transverse connection part; 42-longitudinal connection part; 50-flexible connection piece; 51-first connection part; 52-flexible connection part; 53-second connection part; 60-fixed bracket; 61-connecting piece. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0031] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0032] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0034] Please refer to Figure 1 and Figure 2 This embodiment provides a power distribution device, which includes a connection structure 100 of a transformer and a circuit breaker. The connection structure 100 of a transformer and a circuit breaker includes a box 10, a circuit breaker 20, a transformer 30, a copper busbar 40 and a flexible connection sheet 50.
[0035] The circuit breaker 20 is installed on one side of the box 10. The transformer 30 is installed on the other side of the box 10 relative to the circuit breaker 20. And the transformer 30 and the circuit breaker 20 are located at different heights. Specifically, the box 10 includes a first chamber 11 and a second chamber 12. The circuit breaker 20 is arranged on the side wall of the first chamber 11. The transformer 30 is arranged in the second chamber 12. A partition is provided between the first chamber 11 and the second chamber 12, and a wall bushing 31 is installed on the partition for connecting the circuit breaker 20 and the transformer 30.
[0036] Further, the copper bar 40 includes a transverse connection portion 41 and a longitudinal connection portion 42 which are vertically connected to each other. One end of the transverse connection portion 41 is connected to the circuit breaker 20. It is understood that in this embodiment, the copper bar 40 is an "L"-shaped plate structure. In other embodiments, the copper bar 40 may also be a columnar structure, which is not limited by the present utility model. It is understood that the copper bar 40 is arranged as a transverse and longitudinal connection piece, which meets the connection requirement that the transformer 30 and the circuit breaker 20 have a distance difference in height and width.
[0037] In order to prevent the copper busbar 40 from damaging the overlapping end of the transformer 30, in this embodiment, a soft connection sheet 50 is provided between the copper busbar 40 and the transformer 30. The soft connection sheet 50 includes a first connection portion 51, a second connection portion 53, and a soft connection portion 52 connected between the first connection portion 51 and the second connection portion 53. The first connection portion 51 is connected to one end of the longitudinal connection portion 42. The second connection portion 53 is connected to the transformer 30. The soft connection portion 52 can be bent and deformed.
[0038] Specifically, in this embodiment, one end of the wall bushing 31 is connected to the transformer 30, and the other end is connected to the second connection portion 53. The copper busbar 40 and the flexible connection sheet 50 are located in the first chamber 11. That is, the second connection portion 53 is connected to the transformer 30 through the wall bushing 31.
[0039] Please refer to Figure 3, further, the soft connection part 52 includes multiple layers of metal foil (not shown). The metal foils are superimposed and overlapped and the two ends are respectively connected to the first connection part 51 and the second connection part 53. Optionally, the thickness of the metal foil is 0.1-0.2mm. It is understandable that in the present embodiment, a gap is provided between the metal foils, and when the first connection part 51 vibrates, the metal foil can bend, thereby generating a buffer and reducing the vibration of the second connection part 53. Optionally, in the present embodiment, the first connection part 51 and the second connection part 53 are both metal plates. Bolt holes are provided on the metal plate for connecting to the longitudinal connection part 42 and the wall bushing 31 respectively. Further, the thickness of the first connection part 51, the soft connection part 52 and the second connection part 53 are all the same. It is understandable that the two layers of metal foil at the outermost edge of the soft connection part 52 are respectively connected to the edges of the first connection part 51 and the second connection part 53.
[0040] Please continue to refer to Figure 2 A fixing frame 60 is also provided in the box 10. The fixing frame 60 is fixedly connected to the inner wall of the box 10. The fixing frame 60 is fixedly connected to the transverse connecting portion 41 through a connecting piece 61. In this embodiment, the fixing frame 60 is a transverse beam, and the connecting piece 61 is a longitudinal connecting piece 61, which is used to hoist the transverse connecting portion 41 in the box 10 to prevent the end of the circuit breaker 20 from being damaged by the deadweight of the copper busbar 40.
[0041] Furthermore, in order to improve the insulation performance of the device, the connector 61 is made of insulating material, such as rubber, plastic, etc. In this embodiment, the fixing frame 60 is connected to one end of the connector 61 by bolts. The other end of the connector 61 is connected to the transverse connecting portion 41 by bolts.
[0042] Optionally, the number of copper bars 40 is at least two, and the number of soft connecting sheets 50 is at least two. The first connecting portion 51 and the longitudinal connecting portion 42 are arranged in sequence and fixedly connected by bolts. In the present embodiment, the number of copper bars 40 is two, and the number of soft connecting sheets 50 is two. The first connecting portion 51 and the longitudinal connecting portion 42 overlap and fit in sequence and are fixedly connected by bolts. In other embodiments, the number of copper bars 40 and the soft connecting sheets 50 can be set as needed, and the utility model does not limit it.
[0043] It should be noted that the number of the copper busbars 40 and the flexible connecting sheets 50 mentioned above refers to the number within the connection structure. In this embodiment, three groups of connection structures are arranged side by side.
[0044] The working principle and process of the connection structure 100 of the transformer and the circuit breaker of the power distribution equipment provided by the utility model are:
[0045] Install the circuit breaker 20 and the fixing frame 60 to the designated position; install the connector 61 to the mounting frame; connect the transverse connecting portion 41 of the copper busbar 40 to the circuit breaker 20; connect the connector 61 to the longitudinal connecting portion 42 of the copper busbar 40; install the transformer 30 into the second chamber 12 and connect it to the wall bushing 31; connect the first connecting portion 51 of the flexible connecting piece 50 to the longitudinal connecting portion 42 of the copper busbar 40; connect the second connecting portion 53 to the other end of the wall bushing 31, thereby completing the installation. When the equipment is transported over long distances and vibrates during operation, the copper busbar 40 vibrates and drives the first connecting portion 51 to move, causing the flexible connecting portion 52 to deform, thereby buffering the vibration, reducing or avoiding the second connecting portion 53 driving the overlapping end of the transformer 30 to move, and preventing the copper busbar 40 from damaging the overlapping end of the transformer 30.
[0046] The beneficial effects of the connection structure 100 of the transformer and the circuit breaker of the power distribution equipment provided by the utility model are:
[0047] The utility model includes a box 10, a circuit breaker 20, a transformer 30, a copper busbar 40 and a flexible connecting piece 50. The circuit breaker 20 is installed on one side of the box 10, and the transformer 30 is installed on the other side of the box 10 relative to the circuit breaker 20, and the transformer 30 and the circuit breaker 20 are located at different heights. The copper busbar 40 includes a transverse connecting portion 41 and a longitudinal connecting portion 42 vertically connected to each other. One end of the transverse connecting portion 41 is connected to the circuit breaker 20. The flexible connecting piece 50 includes a first connecting portion 51, a second connecting portion 53 and a flexible connecting portion 52 connected between the first connecting portion 51 and the second connecting portion 53. The first connecting portion 51 is connected to one end of the longitudinal connecting portion 42. The second connecting portion 53 is connected to the transformer 30. The flexible connecting portion 52 can be bent and deformed. By arranging the soft connecting piece 50 between the copper busbar 40 and the transformer 30, when the equipment is transported over long distances or vibrates during operation, the copper busbar 40 vibrates to drive the first connecting part 51 to move, causing the soft connecting part 52 to deform, thereby buffering the vibration and reducing or avoiding the second connecting part 53 driving the overlapping end of the transformer 30 to move, thereby avoiding the copper busbar 40 from damaging the overlapping end of the transformer 30, facilitating installation, and preventing the risk of oil leakage.
[0048] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A connection structure between a transformer and a circuit breaker, characterized in that: include: Box; A circuit breaker, the circuit breaker being installed on one side of the box; A transformer, the transformer being installed in the box on the other side of the circuit breaker, and the transformer and the circuit breaker are located at different heights; A copper busbar, the copper busbar comprising a transverse connecting portion and a longitudinal connecting portion vertically connected to each other, one end of the transverse connecting portion being connected to the circuit breaker; A soft connecting piece, the soft connecting piece comprising a first connecting part, a second connecting part and a soft connecting part connected between the first connecting part and the second connecting part, the first connecting part is connected to one end of the longitudinal connecting part, the second connecting part is connected to the transformer, and the soft connecting part can be bent and deformed.
2. The connection structure of a transformer and a circuit breaker according to claim 1, characterized in that: The first connection part and the second connection part are metal plates, and bolt holes are formed on the metal plates.
3. The connection structure of a transformer and a circuit breaker according to claim 1, characterized in that: The soft connection part includes multiple layers of metal foils, which are overlapped and have two ends connected to the first connection part and the second connection part respectively.
4. The connection structure of a transformer and a circuit breaker according to claim 3, characterized in that: The thickness of the metal foil is 0.1-0.2 mm.
5. The connection structure of a transformer and a circuit breaker according to claim 1, characterized in that: The first connection part, the soft connection part and the second connection part have the same thickness.
6. The connection structure of a transformer and a circuit breaker according to claim 1, characterized in that: A fixing frame is also provided in the box body, and the fixing frame is fixedly connected to the inner wall of the box body, and the fixing frame is fixedly connected to the transverse connecting portion through a connecting piece.
7. The connection structure of a transformer and a circuit breaker according to claim 6, characterized in that: The connecting member is made of insulating material, the fixing frame is connected to one end of the connecting member through bolts, and the other end of the connecting member is connected to the transverse connecting portion through bolts.
8. The connection structure of a transformer and a circuit breaker according to claim 1, characterized in that: The number of the copper bars is at least two, the number of the soft connection sheets is at least two, and the first connection part and the longitudinal connection part are arranged in sequence at intervals and connected by bolts.
9. The connection structure of a transformer and a circuit breaker according to any one of claims 1 to 8, characterized in that: The box body includes a first chamber and a second chamber, the circuit breaker is arranged in the first chamber, the transformer is arranged in the second chamber, a wall bushing is arranged between the first chamber and the second chamber, one end of the wall bushing is connected to the transformer, and the other end is connected to the second connecting part, and the copper busbar and the soft connecting piece are located in the first chamber.
10. A power distribution device, characterized in that: The invention comprises a connection structure between a transformer and a circuit breaker as claimed in any one of claims 1 to 9.