Combined three-phase transformer

Abstract

The utility model discloses a combined three-phase transformer. The combined three-phase transformer comprises a first transformer, a second transformer, a third transformer, a first input terminal strip and an output terminal strip, the first transformer, the second transformer and the third transformer are horizontally arranged and are single-phase transformers; a first end of an input winding of the first transformer, a first end of an input winding of the second transformer and a first end of an input winding of the third transformer are respectively connected with a first terminal of the first input terminal strip; the first end of the output winding of the first transformer, the first end of the output winding of the second transformer and the first end of the output winding of the third transformer are connected with the three terminals of the output terminal strip respectively, the combined three-phase transformer is small in size and lower in height, and space can be effectively saved; and a larger heat dissipation space is reserved above the combined three-phase transformer, so that heat dissipation is more convenient, and the heat dissipation efficiency and the use safety are improved.

Description

Technical Field

[0001] This utility model relates to transformers, and more particularly to a combined three-phase transformer. Background Technology

[0002] Three-phase isolation transformers are mainly used in power systems and industrial and mining enterprises where the power load requires electrical isolation from the power grid, serving to transform voltage and purify the power supply for isolation from the power grid.

[0003] The capacity and size of a transformer are related; the larger the capacity, the larger the size. Traditional three-phase transformers are relatively large, limiting their application scenarios. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and provide a combined three-phase transformer that can be used in scenarios with limited height.

[0005] In one aspect, this utility model provides a combined three-phase transformer, including a first transformer, a second transformer, a third transformer, a first input terminal block, and an output terminal block; the first transformer, the second transformer, and the third transformer are arranged horizontally, and the first transformer, the second transformer, and the third transformer are single-phase transformers, and the capacity of the single-phase transformer is less than the capacity of the three-phase transformer; the single-phase transformer includes an input winding and an output winding;

[0006] The first end of the input winding of the first transformer, the first end of the input winding of the second transformer, and the first end of the input winding of the third transformer are respectively connected to the first terminal of the first input terminal block; the first end of the output winding of the first transformer, the first end of the output winding of the second transformer, and the first end of the output winding of the third transformer are respectively connected to the three terminals of the output terminal block.

[0007] Optionally, the input winding includes a first end, a second end, and a third end, wherein the first and second ends of the input winding are used to receive a first voltage signal;

[0008] Alternatively, the first and third terminals of the input winding are used to receive a second voltage signal; the second voltage signal is greater than the first voltage signal.

[0009] Optionally, the capacity of the single-phase transformer is one-third of the target capacity.

[0010] Optionally, a grounding screw may also be included; the grounding screw is connected to the ground.

[0011] Optionally, a connecting plate is also included, on which the first transformer, the second transformer, and the third transformer are fixed by connectors.

[0012] Optionally, a second input terminal block is also included, which is used to connect to the second end of the input winding of the first transformer, the second end of the input winding of the second transformer, and the second end of the input winding of the third transformer.

[0013] Optionally, the single-phase transformer uses a single-phase EI type iron core.

[0014] In this embodiment, a three-phase transformer is formed by combining three horizontally arranged single-phase transformers. The size of a single-phase transformer is smaller than that of a three-phase transformer, and the volume of the combined three-phase transformer is smaller than that of existing three-phase transformers, which can effectively save space and is suitable for the installation and setting of three-phase transformers in different spaces. At the same time, the combined three-phase transformer of this application is lower in height, and there is more space above the combined three-phase transformer for heat dissipation, which is more convenient for heat dissipation of the three-phase transformer, improving heat dissipation efficiency and safety of use.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a combined three-phase transformer according to one embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of a combined three-phase transformer according to another embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of a single-phase transformer in one embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be described in further detail below with reference to the accompanying drawings.

[0020] It should be understood that the described embodiments are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0022] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] Furthermore, in the description of this application, unless otherwise stated, "several" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0024] Please see Figure 1-2 This utility model provides a combined three-phase transformer, including a first transformer A, a second transformer B, a third transformer C, a first input terminal block 110, and an output terminal block 130;

[0025] The first transformer A, the second transformer B, and the third transformer C are single-phase transformers.

[0026] The first transformer A, the second transformer B, and the third transformer C are arranged horizontally, and the capacity of the single-phase transformer is smaller than that of the three-phase transformer; the single-phase transformer includes an input winding and an output winding;

[0027] The first end of the input winding of the first transformer A, the first end of the input winding of the second transformer B, and the first end of the input winding of the third transformer C are respectively connected to the first terminal of the first input terminal block 110; the first end of the output winding of the first transformer A, the first end of the output winding of the second transformer B, and the first end of the output winding of the third transformer C are respectively connected to the three terminals of the output terminal block 130.

[0028] The first input terminal block 110 can be used to input the voltage signal to be converted, and the output terminal block 130 can be used to output the converted voltage signal.

[0029] In this embodiment, the first ends of the input windings of the three single-phase transformers are connected, and the second ends of the input windings can be used as the leads of the combined three-phase transformer. The leads can be used to input the voltage signal to be converted. The first ends of the output windings of the three single-phase transformers are connected, and the second ends of the output windings of the three single-phase transformers can be used as another lead of the three-phase transformer for outputting the converted voltage signal.

[0030] In this embodiment, a three-phase transformer is formed by combining three horizontally arranged single-phase transformers. The size of a single-phase transformer is smaller than that of a three-phase transformer, and the volume of the combined three-phase transformer is smaller than that of existing three-phase transformers, which can effectively save space and is suitable for the installation and setting of three-phase transformers in different spaces. At the same time, the combined three-phase transformer of this application is lower in height, and there is more space above the combined three-phase transformer for heat dissipation, which is more convenient for heat dissipation of the three-phase transformer, improving heat dissipation efficiency and safety of use.

[0031] In one embodiment, the combined three-phase transformer further includes a second input terminal block 120, which is used to connect to the second end of the input winding of the first transformer A, the second end of the input winding of the second transformer B, and the second end of the input winding of the third transformer C.

[0032] Please see Figure 3 This is a schematic diagram of a single-phase transformer in one embodiment of this application; as shown Figure 3 As shown, the single-phase transformer in this embodiment of the application includes an input winding 210 and an output winding 220;

[0033] The input winding 210 includes a first end, a second end, and a third end; the first and second ends are used to receive a first voltage signal, or the first and third ends are used to receive a second voltage signal; the second voltage signal is greater than the first voltage signal.

[0034] In this embodiment of the application, the first voltage signal can be a 400V voltage signal, and the second voltage signal can be a 415V voltage signal.

[0035] The first and second terminals of the output winding 220 are used to output the converted voltage signal, and the second terminal is used to input a 0V voltage signal. The converted voltage signal can be a 380V voltage signal.

[0036] In this embodiment, different voltage signals can be input through the first and third ends of the input winding, and the conversion of different voltage signals can be achieved through the combined three-phase transformer.

[0037] In one embodiment, the first transformer A, the second transformer B, and the third transformer C are single-phase transformers with the same size and capacity, which makes it easier to assemble the first transformer A, the second transformer B, and the third transformer C.

[0038] Single-phase transformers can use conventional single-phase EI type iron cores, avoiding the need for non-standard strip iron core manufacturing processes in three-phase transformers.

[0039] In this embodiment, the capacity of the single-phase transformer is one-third of the target capacity, which is the capacity of the combined three-phase transformer. In this embodiment, a three-phase transformer is formed by combining three single-phase transformers, each with a capacity one-third of the target capacity. The single-phase transformers are small in size, and the combined three-phase transformer can meet the height requirements of the installation site. This application distributes the load of the three-phase transformer evenly among each single-phase transformer. The capacity of the three-phase transformer obtained after combining the three single-phase transformers is the target capacity, which can meet the voltage conversion requirements of the three-phase transformer. This application can meet the usage requirements of three-phase transformers in scenarios with limited height.

[0040] like Figure 1 As shown, in one embodiment, the combined three-phase transformer further includes a connecting plate 140, which is used to fix the first transformer, the second transformer, and the third transformer.

[0041] The first transformer A, the second transformer B, and the third transformer C are fixed to the connecting plate 140 by connectors.

[0042] The connectors can be common connectors such as bolts and threads.

[0043] In this embodiment of the application, the connecting plate 140 may include four plates. The four connecting plates may be disposed on the top, bottom, front, and back sides of the first transformer A, the second transformer B, and the third transformer C, respectively, to fix the first transformer A, the second transformer B, and the third transformer C in the top, bottom, front, and back directions, thereby ensuring the stability of the combined three-phase transformer.

[0044] like Figure 1 As shown, in one embodiment, the combined three-phase transformer further includes a grounding screw 150; the grounding screw 150 is connected to the ground.

[0045] Grounding screws are used to connect the grounding terminal of a combined three-phase transformer to the grounding electrode or grounding grid, thereby ensuring that the current can safely flow to the ground in the event of a fault, thus protecting the safety of personnel and equipment.

[0046] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A combined three-phase transformer, characterized in that: It includes a first transformer, a second transformer, a third transformer, a first input terminal block, and an output terminal block; the first transformer, the second transformer, and the third transformer are arranged horizontally, and the first transformer, the second transformer, and the third transformer are single-phase transformers, and the capacity of the single-phase transformer is less than that of the three-phase transformer; the single-phase transformer includes an input winding and an output winding; The first end of the input winding of the first transformer, the first end of the input winding of the second transformer, and the first end of the input winding of the third transformer are respectively connected to the first terminal of the first input terminal block; the first end of the output winding of the first transformer, the first end of the output winding of the second transformer, and the first end of the output winding of the third transformer are respectively connected to the three terminals of the output terminal block.

2. The combined three-phase transformer according to claim 1, characterized in that: The input winding includes a first end, a second end, and a third end, wherein the first and second ends of the input winding are used to receive a first voltage signal; Alternatively, the first and third terminals of the input winding are used to receive a second voltage signal; the second voltage signal is greater than the first voltage signal.

3. The combined three-phase transformer according to claim 1, characterized in that, The capacity of the single-phase transformer is one-third of the target capacity.

4. The combined three-phase transformer according to claim 1, characterized in that: It also includes a grounding screw; the grounding screw is connected to the ground.

5. The combined three-phase transformer according to claim 1, characterized in that: It also includes a connecting plate, on which the first transformer, the second transformer and the third transformer are fixed by connectors.

6. The combined three-phase transformer according to claim 1, characterized in that: It also includes a second input terminal block, which is used to connect to the second end of the input winding of the first transformer, the second end of the input winding of the second transformer, and the second end of the input winding of the third transformer.

7. The combined three-phase transformer according to any one of claims 1-6, characterized in that: The single-phase transformer uses a single-phase EI type iron core.

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