Dual-power input rectifier transformer

Abstract

The utility model discloses a dual power supply input rectifier transformer which comprises a main transformer, a first power supply, a second power supply, a first voltage regulating transformer, a second voltage regulating transformer, a first on-load voltage regulating switch and a second on-load voltage regulating switch are arranged on one side of the main transformer, and one end of the first voltage regulating transformer is connected to the first power supply. One end of the first voltage regulation transformer is connected to a first power supply, the other end of the first voltage regulation transformer is connected to the first on-load voltage regulation switch, one end of the second voltage regulation transformer is connected to a second power supply, and the other end of the second voltage regulation transformer is connected to the second on-load voltage regulation switch; by arranging the first voltage regulating transformer, the first on-load voltage regulating switch, the second voltage regulating transformer and the second on-load voltage regulating switch, the dual-power-supply input power can be regulated and distributed according to the power supply capacity, the power supply voltage is allowed to be inconsistent, and the adaptability and the practicability of the rectifier transformer are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and more specifically, it relates to a dual-power input rectifier transformer. Background Art

[0002] A rectifier transformer is a special type of transformer that is mainly used to convert alternating current (AC) into direct current (DC). This type of transformer usually contains one or more rectifiers that can convert the alternating current signal on the secondary side of the transformer into a direct current signal. Rectifier transformers are widely used in power electronic devices, such as electroplating, welding, charging equipment, solar photovoltaic systems, and many other industrial applications.

[0003] In the Chinese patent with the publication number CN203536203U, a series rectifier transformer structure is disclosed. In the solution, it is disclosed that "the series rectifier transformer structure consists of a voltage-regulating rectifier transformer and a series rectifier transformer. The voltage-regulating rectifier transformer is connected to the oil conservator I, and the series rectifier transformer is connected to the oil conservator II. The power cable connects the voltage-regulating rectifier transformer and the series rectifier transformer in parallel through the incoming line high-voltage bushing I provided on the voltage-regulating rectifier transformer and the incoming line high-voltage bushing II provided on the series rectifier transformer. The outgoing line low-voltage terminal provided on the voltage-regulating rectifier transformer is connected to the series incoming terminal provided on the series rectifier transformer, and a valve-side low-voltage outgoing terminal is provided on the series rectifier transformer." In the electrolysis industry application, this rectifier transformer can only obtain the power load from the power grid, and the electricity cost accounts for a very high proportion of the total production cost. Moreover, there is great pressure to reduce the unit energy consumption of the product. With the reduction of the cost of photovoltaic and wind power generation, the behavior of electrolytic smelting production units to build their own photovoltaic and wind power generation as supplementary power is increasing year by year. The proportion of the auxiliary power load in electrolytic smelting plants is very low, and they cannot consume the electricity generated by their own photovoltaic and wind power generation. Therefore, production units have an urgent need to flexibly connect the self-built photovoltaic and wind power generation to the electrolytic smelting power supply rectification system, and the dual-power input rectifier transformer will solve this problem well. Summary of the Utility Model

[0004] Aiming at the problems existing in the prior art, the utility model provides a dual-power input rectifier transformer to solve the technical problems mentioned in the background art.

[0005] To achieve the above object, the utility model provides the following technical solution: A dual-power-input rectifier transformer, comprising a main transformer. On one side of the main transformer, there are a first power source, a second power source, a first voltage regulating transformer, a second voltage regulating transformer, a first on-load tap-changer and a second on-load tap-changer. One end of the first voltage regulating transformer is connected to the first power source, and the other end is connected to the first on-load tap-changer. One end of the second voltage regulating transformer is connected to the second power source, and the other end is connected to the second on-load tap-changer. The first on-load tap-changer and the second on-load tap-changer are connected to the main transformer.

[0006] The utility model is further configured such that the first on-load tap-changer and the second on-load tap-changer are connected in parallel, which is convenient for separately adjusting the output power of the power sources.

[0007] The utility model is further configured such that the first on-load tap-changer and the second on-load tap-changer adopt step regulation to achieve the adjustment.

[0008] The utility model is further configured such that the first power supply system is a grid power input system to achieve grid energy input.

[0009] The utility model is further configured such that the second power supply system is a new energy power input system to achieve new energy power input.

[0010] Compared with the prior art, the utility model provides a dual-power-input rectifier transformer, which has the following beneficial effects:

[0011] 1. By setting the inputs of the first power source and the second power source, dual-power input of the rectifier transformer is achieved.

[0012] 2. By setting the first voltage regulating transformer and the first on-load tap-changer, the second voltage regulating transformer and the second on-load tap-changer, the dual-power input power can be adjusted and distributed according to the power source capacity, allowing the power source voltages to be inconsistent, thus improving the adaptability and practicability of the rectifier transformer.

[0013] 3. The rectifier transformer in this application has no difference in manufacturing process from traditional transformers, is adaptable to the existing technology, reduces the R & D production cost, and improves the economic benefit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a dual-power-input rectifier transformer in the utility model;

[0015] Figure 2 It is an electrical connection schematic diagram in the utility model.

[0016] In the figure: 1. Main transformer; 2. First power supply; 3. Second power supply; 4. First regulating transformer; 5. Second regulating transformer; 6. First on-load tap-changer; 7. Second on-load tap-changer. Detailed implementation manners

[0017] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0018] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0019] In the present utility model, without contrary description, the orientations such as "upper and lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left and right" are usually the left and right shown in the drawings; "inside and outside" refer to the inside and outside relative to the contours of the respective components, but the above orientation terms are not used to limit the present utility model.

[0020] Please refer to Figure 1-2 , a rectifier transformer with dual power supply inputs, including a main transformer 1. On one side of the main transformer 1, there are a first power supply 2, a second power supply 3, a first regulating transformer 4, a second regulating transformer 5, a first on-load tap-changer 6 and a second on-load tap-changer 7. One end of the first regulating transformer 4 is connected to the first power supply 2, and the other end is connected to the first on-load tap-changer 6. One end of the second regulating transformer 5 is connected to the second power supply 3, and the other end is connected to the second on-load tap-changer 7. The first on-load tap-changer 6 and the second on-load tap-changer 7 are connected to the main transformer. The first on-load tap-changer 6 and the second on-load tap-changer 7 are in parallel. The first on-load tap-changer 6 and the second on-load tap-changer 7 adopt step regulation. The first power supply 2 system is a grid power input system, and the second power supply 3 system is a new energy power input system.

[0021] In this embodiment, the first regulating transformer 4 is connected to the first power supply 2. One end of the first regulating transformer 4 is connected to the output of the first on-load tap-changer 6. The second regulating transformer 5 is connected to the second power supply 3. The new energy power system connected to the second power supply 3 is preferably a new energy power system such as photovoltaic and wind power. One end of the second regulating transformer 5 is connected to the output of the second on-load tap-changer 7. After the outputs of the first on-load tap-changer 6 and the second on-load tap-changer 7 are in parallel, they are connected to the main transformer 1. When it is necessary to adjust the input power of the two power supplies, adjusting the corresponding on-load tap-changer can achieve the adjustment of the input power.

[0022] In summary, when the overall device is in use or operation: connect the first voltage regulating transformer 4 to the first power supply 2, connect one end of the first voltage regulating transformer 4 to the output of the first on-load tap-changer 6, connect the second voltage regulating transformer 5 to the second power supply 3, the new energy power system connected to the second power supply 3 is preferably a new energy power system such as photovoltaic or wind power, connect one end of the second voltage regulating transformer 5 to the output of the second on-load tap-changer 7, and connect the outputs of the first on-load tap-changer 6 and the second on-load tap-changer 7 in parallel and then connect them to the main transformer 1. When it is necessary to adjust the input power of the two power supplies, adjusting the corresponding on-load tap-changer can achieve the adjustment of the input power.

[0023] In all the solutions mentioned above, for the connection between two components, welding, connection with bolts and nuts, connection with bolts or screws, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-power-input rectifier transformer, comprising a main transformer (1), characterized in that: One side of the main transformer (1) is connected with a first power supply (2), a second power supply (3), a first voltage regulating transformer (4), a second voltage regulating transformer (5), a first on-load tap-changer (6) and a second on-load tap-changer (7). One end of the first voltage regulating transformer (4) is connected to the first power supply (2), and the other end is connected to the first on-load tap-changer (6). One end of the second voltage regulating transformer (5) is connected to the second power supply (3), and the other end is connected to the second on-load tap-changer (7). The first on-load tap-changer (6) and the second on-load tap-changer (7) are connected to the main transformer.

2. The dual-power-input rectifier transformer according to claim 1, wherein: The first on-load tap-changer (6) and the second on-load tap-changer (7) are connected in parallel.

3. The dual-power-input rectifier transformer according to claim 1, characterized in that: The first on-load tap-changer (6) and the second on-load tap-changer (7) adopt step regulation.

4. A dual-power input rectifier transformer according to claim 1, characterized in that: The first power supply (2) system is a grid power input system.

5. The dual-power-input rectifier transformer according to claim 1, characterized in that: The second power supply (3) system is a new energy power input system.

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