Intelligent box-type transformer provided with multiple layers of current transformers
By setting up a shelf structure on the length direction of the box transformer, installing current transformers layer by layer and forming oil flow channels, the width increase and temperature rise problems caused by the stacking of current transformers is solved, and the increase in the number of current transformers and the rationalization of thermal management is achieved.
Patent Information
- Application Number
- CN202422169518.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-04
AI Technical Summary
In existing box transformers, when the current transformer is stacked on one side of the transformer's body width, the width of the box transformer increases, and the temperature rises from the current transformer, making it difficult to meet the user's width needs and thermal management requirements.
A layer frame structure is set on one side of the transformer's length direction, and a current mutual inductance module is installed layer by layer to form a flow oil channel. The two ends of the current transformer are set at intervals in the height direction. The layer frame structure and connection components are fixed to limit the movement of the current transformer and ensure that the oil flows to take away heat.
It realizes that the number of current transformers is increased without increasing the width of the box transformer and the temperature rise of the current transformer is effectively reduced, meeting the user's width needs and thermal management requirements.
Smart Images
Figure CN223092681U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, and particularly relates to an intelligent box-type transformer configured with multiple current transformers. Background Art
[0002] A current transformer converts the high-voltage current output by a transformer into a low-voltage current and outputs it to a measuring instrument or a protection device through a secondary circuit. Current transformers are of great significance for the operation monitoring, fault diagnosis, and maintenance of a power generation system. Therefore, the future market will also have an increasing demand for current transformers.
[0003] However, in existing box-type transformers, current transformers are generally arranged on one side in the width direction of the transformer body. A lead sleeve is arranged on the outer side of the box wall, and the current transformer is correspondingly arranged on the inner side of the box wall. The two end faces of the current transformer are clamped by a pressure plate and fixedly connected to the box wall through the pressure plate. When multiple current transformers need to be added, the multiple current transformers will be stacked on one side in the width direction of the transformer body, increasing the overall width dimension of the box-type transformer and making it difficult to meet the width requirements of customers. In addition, in existing box-type transformers, both side faces of the two ends of the current transformer are closely attached to the pressure plate, making it difficult for transformer oil to flow through the current transformer, resulting in the inability to effectively reduce the temperature generated when the current transformer works and causing a large temperature rise of the current transformer. Summary of the Utility Model
[0004] The main purpose of the utility model is to provide an intelligent box-type transformer configured with multiple current transformers, aiming to meet the user's requirements for the width direction while increasing the number of current transformers in the box-type transformer.
[0005] To achieve the above object, the utility model provides an intelligent box-type transformer configured with multiple current transformers, including a transformer body, a layer rack structure, and a plurality of current transformer modules; the layer rack structure is arranged on one side in the length direction of the transformer body, and the layer rack structure is provided with a plurality of layers distributed along the height direction; each current transformer module includes a plurality of current transformers, and each current transformer of the current transformer module is fixedly installed in the corresponding layer one by one, so that the plurality of current transformers of the current transformer module are stacked along the height direction; wherein, both ends of each current transformer in the height direction are correspondingly arranged at intervals with the top surface and the bottom surface of the same layer to form an oil flow channel.
[0006] Further, the layer rack structure includes layer boards, overhead members, and connection components. A plurality of layer boards are spaced apart along the height direction, and a plurality of the overhead members are arranged between adjacent two layer boards; and both ends of each overhead member in the height direction are respectively abutted against the corresponding layer boards; a plurality of the connection components are used for connecting and fixing the plurality of layer boards and the overhead members.
[0007] Further, pads extend horizontally from both ends of the overhead member in the height direction. A plurality of overhead members are distributed around the current transformer to limit the horizontal movement of the current transformer, and the two pads of the same overhead member respectively abut against the two end faces of the current transformer in the height direction.
[0008] Further, four of the overhead members are evenly distributed around the current transformer. A limiting inclined surface is provided between the two pads of each overhead member, and the limiting inclined surface is tangent to the side surface of the current transformer.
[0009] Further, the overhead members in different layers are stacked and distributed one by one in the height direction, and the number of the connecting components is the same as the number of the overhead members in the same layer; each connecting component includes a screw and a nut. One end of the screw is located below the bottom layer plate, and the other end of the screw sequentially passes through the layer plate and the overhead member in the height direction and then passes out above the top layer plate, and both ends of the screw are threadedly connected to the nut respectively.
[0010] Further, a clamping member is provided at the top of the transformer body. The clamping member is provided with a connecting channel steel. The connecting channel steel extends out of the clamping member along the length direction of the transformer body. The top ends of some of the screws pass through the top layer plate and then pass through the channel steel, and are then threadedly connected to the nut.
[0011] Further, the layer plate is provided with a wire passing hole, and the center of the wire passing hole corresponds to the center of the inner hole of the current transformer.
[0012] Further, a plurality of current transformer modules are distributed along the width direction of the transformer body.
[0013] The technical solution provided by the present utility model may include the following beneficial effects:
[0014] In the present utility model, a shelf structure is provided on one side in the length direction of the transformer, and multiple current transformers of each group of current mutual inductance modules are arranged layer by layer within each layer space of the shelf structure. In this way, increasing the number of current transformers does not affect the width of the box-type transformer, meeting the user's requirements for the width of the box-type transformer. It should be noted that the added current transformers are stacked in the height direction. If the shelf structure is arranged on the top of the transformer body, it will cause a significant local protrusion of the transformer body, which is not convenient for installation. However, in the present utility model, the shelf structure is arranged on one side of the transformer body. Although it increases the size of the box-type transformer in the length direction to a certain extent, the increase amplitude is relatively small compared to the length of the entire box-type transformer, and the structure is more reasonable. In addition, by arranging the current transformers on one side of the transformer body, the height of the stacked current transformers can overlap with the height of the transformer body, that is, the stacked current transformers do not affect the overall height of the box-type transformer, and there is enough height to arrange multiple current transformers.
[0015] Further, the current transformers in the layer space are spaced from the top surface and the bottom surface of the layer space, forming an oil flow channel, enabling the transformer oil to flow through both end faces of the current transformer, effectively taking away the heat of the current transformer, and reducing the temperature rise of the current transformer. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0017] Figure 1 Schematic structural diagram of the connection between the transformer body and the shelf structure of the present utility model;
[0018] Figure 2 Schematic diagram of the installation of the current transformer in the shelf structure of the present utility model;
[0019] Figure 3 Schematic structural diagram of the shelf structure of the present utility model;
[0020] Figure 4 Schematic longitudinal sectional structure diagram of the shelf structure installed with current transformers along the width direction of the transformer body of the present utility model;
[0021] Figure 5 Schematic structural diagram of the cooperation between the side of the overhead part and the current transformer of the present utility model;
[0022] Figure 6For Figure 1 Schematic enlarged view of the structure of the middle region A;
[0023] Explanation of the reference numerals in the attached drawings: 100 - transformer body, 110 - clamping piece, 120 - connecting channel steel, 200 - shelf structure, 210 - between layers, 220 - oil flow channel, 230 - layer board, 231 - wire passing hole, 240 - overhead part, 241 - backing plate, 242 - limiting inclined plane, 250 - connecting component, 251 - screw, 252 - nut, 300 - current mutual inductance module, 310 - current transformer. Specific implementation manners
[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
[0025] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.
[0026] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0027] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0028] Next, in conjunction with Figures 1 to 6 , a smart box-type transformer configured with multiple current transformers according to an embodiment of the present utility model is described, including:
[0029] Transformer body 100;
[0030] A shelf structure 200, the shelf structure 200 is arranged on one side in the length direction of the transformer body 100, and the shelf structure 200 is provided with a plurality of layers 210 distributed in the height direction;
[0031] A plurality of current mutual inductance modules 300, each current mutual inductance module 300 includes a plurality of current transformers 310, and each current transformer 310 of the current mutual inductance module 300 is fixedly installed in the layer 210 in a one-to-one correspondence, so that the plurality of current transformers 310 of the current mutual inductance module 300 are stacked in the height direction; wherein, both ends of each current transformer 310 in the height direction are spaced from the top surface and the bottom surface of the same layer 210 to form an oil flow channel 220.
[0032] In the present utility model, a shelf structure 200 is arranged on one side in the length direction of the transformer, and a plurality of current transformers 310 of each set of current mutual inductance modules 300 are arranged layer by layer in each layer space 210 of the shelf structure 200. In this way, adding a plurality of current transformers 310 does not affect the width of the box-type transformer, meeting the user's requirements for the width of the box-type transformer. It should be noted that the added current transformers 310 are stacked in the height direction. If the shelf structure 200 is arranged on the top of the transformer body 100, it will cause obvious local protrusion of the transformer body 100, which is not convenient for installation. In the present utility model, the shelf structure 200 is arranged on one side of the transformer body 100. Although the size of the box-type transformer in the length direction is increased to a certain extent, the increase amplitude is relatively small compared to the length of the entire box-type transformer, and the structure is more reasonable. In addition, by arranging the current transformers 310 on one side of the transformer body 100, the height of the stacked current transformers 310 can overlap with the height of the transformer body 100, that is, the stacked current transformers 310 do not affect the overall height of the box-type transformer, and there is enough height to arrange a plurality of current transformers 310.
[0033] Further, the current transformers 310 in the layer space 210 are spaced from the top surface and the bottom surface of the layer space 210, forming an oil flow channel 220, enabling the transformer oil to flow through both end faces of the current transformers 310, effectively taking away the heat of the current transformers 310, and reducing the temperature rise of the current transformers 310.
[0034] In a specific embodiment of the present utility model, the set number of the current mutual inductance modules 300 is the same as the number of windings. As Figure 1 shown, the transformer body 100 has three windings, and the corresponding current mutual inductance modules 300 are also correspondingly set to three. Among them, the set number of the current transformers 310 of each current mutual inductance module 300 is set as required, which can be 2, 3, etc., and the present utility model does not make specific limitations. The number of layer spaces 210 of the shelf structure 200 is greater than or equal to the number of current transformers 310 of a current mutual inductance module 300. Specifically, as Figure 1 shown, the number of current transformers 310 of a current mutual inductance module 300 is 3, and the layer spaces 210 of the shelf structure 200 are also three. In specific use, a high-voltage lead wire sequentially passes through the current transformers 310 of the same current mutual inductance module 300 from bottom to top and then is connected into the lead sleeve of the box-type transformer, realizing the inductive measurement by a plurality of current transformers 310.
[0035] Specifically and optionally, as Figure 3As shown, the shelf structure 200 includes shelf boards 230, overhead members 240, and connection components 250. A plurality of shelf boards 230 are spaced apart in the height direction, and a plurality of the overhead members 240 are disposed between two adjacent shelf boards 230; and both ends of each overhead member 240 in the height direction are respectively abutted against the corresponding shelf boards 230; a plurality of the connection components 250 are used to connect and fix the plurality of shelf boards 230 and the overhead members 240. In this embodiment, the interlayer 210 between two shelf boards 230 is overheaded by the overhead member 240, so that the current transformer 310 can be disposed between the two shelf boards 230. In some alternative embodiments, the connection component 250 can be a screw, and the overhead member 240 and the shelf board 230 are fixedly connected by the screw to fix all the shelf boards 230 and the overhead members 240 to form the whole of the shelf structure 200.
[0036] Wherein, both ends of the overhead member 240 in the height direction respectively horizontally extend out cushion plates 241, and a plurality of overhead members 240 are distributed on the outer periphery of the current transformer 310 to limit the horizontal movement of the current transformer 310, and the two cushion plates 241 of the same overhead member 240 respectively correspond to and are partially abutted against both end faces of the current transformer 310 in the height direction. Thus, both end faces of the current transformer 310 are cushioned by the cushion plates 241 to prevent both end faces of the current transformer 310 from directly adhering to the shelf board 230, so that the transformer oil can flow through to take away the heat of the current transformer 310 and reduce the temperature rise of the current transformer 310.
[0037] Preferably, four of the overhead members 240 are evenly distributed on the outer periphery of the current transformer 310, and a limiting inclined surface 242 is provided between the two cushion plates 241 of each overhead member 240, and the limiting inclined surface 242 is tangent to the side surface of the current transformer 310. In this embodiment, one current transformer 310 is fixed by the four limiting inclined surfaces 242, effectively limiting the horizontal movement of the current transformer 310. At the same time, due to the action of the upper and lower cushion plates 241, the vertical movement of the current transformer 310 is also limited. Thus, the current transformer 310 can be stably disposed in the interlayer 210.
[0038] Preferably, the spacers 240 between different layers 210 are stacked one by one in the height direction, and the number of the connecting components 250 is the same as the number of the spacers 240 in the same layer 210; each of the connecting components 250 includes a screw 251 and a nut 252. One end of the screw 251 is located below the bottommost layer board 230, and the other end of the screw 251 sequentially passes through the layer board 230 and the spacer 240 in the height direction and then passes out above the topmost layer board 230, and both ends of the screw 251 are threadedly connected to the nut 252 respectively. In this embodiment, the screw 251 passes through the layer board 230 and the spacer 240, and the nuts 252 at both ends of the screw 251 are tightened to press the intermediate layer board 230 and the spacer 240, so as to fix the layer board 230 and the spacer 240, and the layer board 230 and the spacer 240 are detachably connected.
[0039] Specifically, as Figure 6 shown, a clamping member 110 is provided at the top of the transformer body 100, a connecting channel steel 120 is provided on the clamping member 110, the connecting channel steel 120 extends out of the clamping member 110 along the length direction of the transformer body 100, and the top ends of some of the screws 251 pass through the topmost layer board 230 and then pass through the channel steel and are threadedly connected to the nut 252. In this way, the layer rack structure 200 is installed and fixed on one side of the transformer body 100 in the length direction. And it can be detachably connected, which is convenient for maintenance and replacement.
[0040] As Figure 3 shown, a wire passing hole 231 is provided on the layer board 230, and the center of the wire passing hole 231 corresponds to the inner hole center of the current transformer 310. In this way, the high-voltage lead can smoothly pass through each current transformer 310 of the same current transformer module 300.
[0041] Preferably, as Figure 1 shown, a plurality of current transformer modules 300 are distributed along the width direction of the transformer body 100. In this way, compared with the design in which a plurality of current transformer modules 300 are distributed along the length direction of the transformer body 100, the present embodiment reasonably utilizes the vacant space in the width direction and can avoid excessive increase in the length of the transformer body 100 in the length direction due to the plurality of current transformer modules 300.
[0042] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims
1. An intelligent box-type transformer configured with a multi-layer current transformer, characterized in that, Comprising: Transformer body; Shelf structure, the shelf structure is arranged on one side in the length direction of the transformer body, and the shelf structure is provided with a plurality of layers distributed in the height direction; A plurality of current mutual inductance modules, each current mutual inductance module includes a plurality of current transformers, and each current transformer of the current mutual inductance module is fixedly installed in the corresponding layer one by one, so that the plurality of current transformers of the current mutual inductance module are stacked in the height direction; wherein, both ends of each current transformer in the height direction are correspondingly arranged at intervals with the top surface and the bottom surface of the same layer to form an oil flow channel.
2. The intelligent box-type transformer configured with a multi-layer current transformer according to claim 1, wherein: The shelf structure includes shelf boards, overhead members and connecting components. A plurality of shelf boards are distributed at intervals in the height direction, and a plurality of the overhead members are arranged between adjacent two shelf boards; and both ends of each overhead member in the height direction are respectively abutted against the corresponding shelf board; a plurality of the connecting components are used for connecting and fixing the plurality of shelf boards and the overhead members.
3. The intelligent box-type transformer configured with a multi-layer current transformer according to claim 2, characterized in that: Both ends of the overhead member in the height direction respectively horizontally extend out of cushion plates. A plurality of overhead members are distributed on the outer periphery of the current transformer to limit the horizontal movement of the current transformer, and the two cushion plates of the same overhead member are respectively correspondingly abutted against the two end faces of the current transformer in the height direction.
4. An intelligent box-type transformer configured with a multi-layer current transformer according to claim 3, characterized in that: Four of the overhead members are evenly distributed on the outer periphery of the current transformer, and a limiting inclined surface is arranged between the two cushion plates of each overhead member, and the limiting inclined surface is tangent to the side surface of the current transformer.
5. The intelligent box-type transformer configured with a multi-layer current transformer according to claim 2, characterized in that: The overhead members in different layers are stacked and distributed one by one in the height direction, and the number of the connecting components is the same as the number of the overhead members in the same layer; each connecting component includes a screw rod and a nut. One end of the screw rod is located below the bottommost shelf board, and the other end of the screw rod sequentially passes through the shelf board and the overhead member in the height direction and then passes out above the topmost shelf board, and both ends of the screw rod are respectively threadedly connected with the nut.
6. The intelligent box-type transformer configured with a multi-layer current transformer according to claim 5, wherein: A clamping piece is arranged at the top of the transformer body, and the clamping piece is provided with a connecting channel steel. The connecting channel steel extends out of the clamping piece along the length direction of the transformer body. The top ends of some of the screw rods pass through the topmost shelf board and then pass through the channel steel, and then are threadedly connected with the nut.
7. An intelligent box-type transformer configured with a multi-layer current transformer according to claim 2, characterized in that: The shelf board is provided with a wire passing hole, and the center of the wire passing hole corresponds to the center of the inner hole of the current transformer.
8. An intelligent box-type transformer configured with a multi-layer current transformer according to claim 1, characterized in that: A plurality of current mutual inductance modules are distributed along the width direction of the transformer body.