Split type frequency converter structure

Abstract

The embodiment of the utility model discloses a split type frequency converter structure which comprises a transformer cabinet, a base is arranged below the transformer cabinet, the transformer cabinet is fixedly arranged on the base, a phase-shifting transformer is installed on the base, a detection resistor is assembled on the phase-shifting transformer, and the detection resistor is connected with the transformer cabinet. The detection resistor is connected with an incoming and outgoing line switching copper bar through a cable, a live-line sensor is installed below the detection resistor, and the incoming and outgoing line switching copper bar, the detection resistor, the live-line sensor and the phase-shifting transformer are integrated into a whole. According to the embodiment of the utility model, the phase-shifting transformer, the detection resistor and the incoming and outgoing line switching copper bar structure are arranged, and the detection resistor is arranged near the incoming and outgoing line switching copper bar, so that wiring across a cabinet body is not needed, control and power are integrated, the space of the cabinet body is fully utilized, the size of the whole machine is reduced, and the operation reliability of equipment is improved.

Description

Technical Field

[0001] The utility model relates to a frequency converter structure, in particular to a split frequency converter structure. Background Art

[0002] Frequency converter is a power electronic device that is mainly used to convert industrial frequency power into another frequency power control device to achieve speed control of loads such as motors. It is widely used in industries such as electricity, metallurgy, petrochemical, water, environmental protection, cement, papermaking, pharmaceuticals and mining. Especially in the speed control of pump loads, it can significantly improve energy efficiency and save energy. The existing frequency converter structure is as follows Figure 3 and Figure 4 As shown, it includes an incoming and outgoing line cabinet 101, a phase-shifting transformer cabinet 104, a control cabinet 105, a phase-shifting transformer 106 and a power unit 107. A detection resistor 102 is installed at the upper end of the incoming and outgoing line cabinet 101, and an incoming and outgoing line transfer copper bus 103 is installed at the lower end of the incoming and outgoing line cabinet 101. The incoming and outgoing line transfer copper bus 103 is reserved for the client to connect the phase-shifting transformer 106 and the power unit 107. The communication cable of the power unit 107 is connected to the control board of the control cabinet 105.

[0003] Due to the market demand for inverters of different power sizes, small-power inverters often adopt an integrated structure. Since high-power cabinets are larger in size, it is difficult to transport them as a whole, so they need to be made into split structures. The split structure has the problem of matching connections between cabinets, and the cable connection is extremely complicated and prone to errors. At the same time, the traditional method is to make the input and output lines, control cabinets, transformers, and power units into separate cabinets, which takes up a relatively large space.

[0004] Therefore, we propose a split inverter structure to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present invention is that due to the market demand for inverters of different power sizes, small-power inverters often adopt an integrated structure. Since the large-power cabinet is large, it is difficult to transport it as an integrated structure, so it needs to be made into a split structure. The split structure has the problem of matching connections between cabinets, and the connection of cables is extremely complicated and prone to errors. At the same time, the traditional method is to make the input and output lines, control cabinet, transformer, and power unit into separate cabinets, which takes up a relatively large space.

[0006] In order to solve the above problems, an embodiment of the present invention provides a split-type inverter structure, including a transformer cabinet, a base is provided under the transformer cabinet, the transformer cabinet is fixedly arranged on the base, a phase-shifting transformer is installed on the base, a detection resistor is assembled on the phase-shifting transformer, the detection resistor is connected to the input and output line transfer copper busbar through a cable, a live sensor is installed on the surrounding side of the detection resistor, and the input and output line transfer copper busbar, the detection resistor and the live sensor are integrated with the phase-shifting transformer.

[0007] Optionally, a power cabinet is installed on one side of the transformer cabinet.

[0008] Optionally, the power cabinet includes a power unit frame and a power unit, and the power units are installed back to back in the power unit frame.

[0009] Optionally, a control cabinet is provided on one side of the power unit.

[0010] Optionally, the transformer cabinet is compatible with bottom incoming and outgoing lines, top incoming and outgoing lines, and side incoming and outgoing lines, and the transformer cabinet is compatible with high-voltage incoming and outgoing lines in one.

[0011] Optionally, the detection resistor is arranged on one side of the input and output line transfer copper busbar.

[0012] Optionally, the communication line of the power cabinet is connected to the control mainboard of the control cabinet.

[0013] Optionally, the transformer cabinet includes a transformer frame, and the phase-shifting transformer is located in the transformer frame.

[0014] Optionally, the power cabinet and the transformer cabinet are detachably connected.

[0015] Optionally, the control cabinet and the power cabinet are integrally formed.

[0016] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include:

[0017] The embodiment of the utility model is provided with a phase-shifting transformer, a detection resistor, an input and output line transfer copper busbar, a power cabinet and other structures. The external client incoming cable is directly connected to the input and output line transfer copper busbar of the phase-shifting transformer, the detection resistor cable is connected to the input and output line transfer copper busbar nearby, and the communication cable of the power cabinet is connected to the control panel of the control cabinet. The input and output lines and the transformer cabinet are combined into one, the input and output line transfer copper busbar is integrated on the transformer, and the detection resistor is placed near the input and output line transfer copper busbar. There is no need for wiring across the cabinet, the connection is shortened, the control and power are integrated into one, the cabinet space is fully utilized, the overall machine volume is reduced, and the equipment operation reliability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0021] Figure 1 The structure of the utility model Figure 1 .

[0022] Figure 2 The structure of the utility model Figure 2 .

[0023] Figure 3 The structure of the prior art provided by the utility model Figure 1 .

[0024] Figure 4 The structure of the prior art provided by the utility model Figure 2 .

[0025] Reference numerals

[0026] 1. Transformer cabinet; 2. Power cabinet; 3. Control cabinet; 4. Detection resistor; 5. Inlet and outlet line transfer busbar; 6. Phase-shifting transformer; 7. Power unit; 8. Power unit frame; 9. Transformer frame; 10. Base; 11. Live sensor; 101. Inlet and outlet cabinet; 102. Detection resistor; 103. Inlet and outlet line transfer busbar; 104. Phase-shifting transformer cabinet; 105. Control cabinet; 106. Phase-shifting transformer; 107. Power unit. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Similar component numbers in the drawings represent similar components. Obviously, the embodiments described below are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0028] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0029] It should also be understood that the terms used in this specification of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the specification of the embodiments of the present invention and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0030] See also Figure 1-2 The utility model discloses a split-type inverter structure, including a transformer cabinet 1, a base 10 is provided under the transformer cabinet 1, the transformer cabinet 1 is fixedly arranged on the base 10, a phase-shifting transformer 6 is installed on the base 10, a detection resistor 4 is assembled on the phase-shifting transformer 6, the detection resistor 4 is connected to the input and output line transfer copper bus 5 through a cable, and the detection resistor 4 is arranged on one side of the input and output line transfer copper bus 5, and a live sensor 11 is installed on the surrounding side of the detection resistor 4, the input and output line transfer copper bus 5, the detection resistor 4 and the live sensor 11 are integrated with the phase-shifting transformer 6. Through the phase-shifting transformer 6, the detection resistor 4 and the input and output line transfer copper bus 5 structure, the external client input cable is directly connected to the input and output line transfer copper bus 5 of the phase-shifting transformer 6, and the external detection resistor cable is connected to the input and output line transfer copper bus 5 near it, so that the high-voltage input and output lines and the transformer cabinet 1 are combined into one, the input and output line transfer copper bus 5 is integrated on the transformer, and the detection resistor 4 is placed near the input and output line transfer copper bus 5, so there is no need for wiring across the cabinet.

[0031] In the present invention, the transformer cabinet 1 is compatible with bottom inlet and outlet lines, top inlet and outlet lines, and side inlet and outlet lines. The transformer cabinet 1 is compatible with high-voltage inlet and outlet lines in one, which reduces copper busbar transfers, saves cables and structural materials, and simplifies installation.

[0032] See also Figure 1-2A power cabinet 2 is installed on one side of the transformer cabinet 1. The power cabinet 2 includes a power unit frame 8 and a power unit 7. The power unit 7 is installed back to back in the power unit frame 8. A control cabinet 3 is provided on one side of the power unit frame 7. The control cabinet 3 and the power cabinet 2 are integrally formed. The communication line of the power cabinet 2 is connected to the control main board of the control cabinet 3.

[0033] Please continue reading Figure 1-2 The transformer cabinet 1 includes a transformer frame 9, in which the phase-shifting transformer 6 is located. The power cabinet 2 and the transformer cabinet 1 are detachably connected, facilitating disassembly and maintenance. The live sensor 11 is installed in the transformer frame 9. By installing the detection resistor 4 on the transformer, it can be directly connected to the transfer busbar without the need for cross-cabinet transfer.

[0034] The working principle and usage of this utility model:

[0035] When in use, the client's incoming cable is directly connected to the incoming and outgoing line transfer copper bus 5 of the phase-shifting transformer 6, the detection resistor cable is connected to the incoming and outgoing line transfer copper bus 5 near it, and the communication cable of the power unit 7 is connected to the control board of the control cabinet 2. The utility model has a split-type inverter structure, which combines the high-voltage incoming and outgoing lines and the transformer cabinet into one, and the incoming and outgoing line transfer copper bus is integrated on the transformer. The detection resistor is placed near the transfer copper bus, and there is no need for wiring across the cabinet; control and power are integrated into one, making full use of the cabinet space, reducing the size of the whole machine, and improving the reliability of equipment operation. The structural layout of the utility model makes full use of space, with a small number of transfer copper buses and cables, reducing costs and increasing efficiency, reducing copper bus transfer, saving cables and structural materials, and simplifying installation. The detection resistor is installed on the transformer and can be directly connected to the transfer copper bus without the need for cross-cabinet transfer. The control cabinet and the power unit are installed nearby, making the communication line shorter, reducing interference and attenuation, and making the control more reliable.

[0036] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 should not be understood as a limitation on the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0039] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0041] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0042] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, as long as these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

[0043] The above description is a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A split-type inverter structure, characterized in that: It includes a transformer cabinet, a base is provided under the transformer cabinet, the transformer cabinet is fixedly arranged on the base, a phase-shifting transformer is installed on the base, a detection resistor is assembled on the phase-shifting transformer, the detection resistor is connected to the input and output line transfer copper busbar through a cable, a live sensor is installed around the detection resistor, and the input and output line transfer copper busbar, the detection resistor and the live sensor are integrated with the phase-shifting transformer.

2. The split-type inverter structure according to claim 1, characterized in that: A power cabinet is installed on one side of the transformer cabinet.

3. The split-type inverter structure according to claim 2, characterized in that: The power cabinet includes a power unit frame and a power unit, and the power units are installed back to back in the power unit frame.

4. The split-type inverter structure according to claim 3, characterized in that: A control cabinet is provided on one side of the power unit.

5. The split-type inverter structure according to claim 1, characterized in that: The transformer cabinet is compatible with bottom incoming and outgoing lines, top incoming and outgoing lines, and side incoming and outgoing lines, and the transformer cabinet is compatible with high-voltage incoming and outgoing lines in one.

6. The split-type inverter structure according to claim 4, characterized in that: The detection resistor is arranged on one side of the input and output line transfer copper bus.

7. The split-type inverter structure according to claim 6, characterized in that: The communication line of the power cabinet is connected to the control mainboard of the control cabinet.

8. The split-type inverter structure according to claim 7, characterized in that: The transformer cabinet includes a transformer frame, and the phase-shifting transformer is located in the transformer frame.

9. The split-type inverter structure according to claim 8, characterized in that: The power cabinet and the transformer cabinet are detachably connected.

10. The split-type inverter structure according to claim 4, characterized in that: The control cabinet and the power cabinet are integrally formed.

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