Integrated three-phase variable frequency power supply structure

Abstract

The utility model discloses integrated three -phase frequency conversion power supply structure, including frequency converter transformer and control cabinet, the front of frequency converter transformer is equipped with control cabinet, the back of frequency converter transformer is equipped with output high -voltage stake, the both sides of frequency converter transformer are equipped with heat dissipation device, the side of control cabinet is equipped with incoming line cabinet, the filter unit, IGBT rectification unit, heat dissipation board and connecting piece are equipped in control cabinet, the filter unit and IGBT rectification unit are installed on heat dissipation board, and heat dissipation board is connected with other components through connecting piece, the utility model discloses control cabinet and transformer adopt integrated design, and the physical distance of control unit and transformer is greatly shortened, on one hand, effectively enhances signal anti -jamming capability, on the other hand, signal response rate is improved obviously.

Description

Technical Field

[0001] This utility model relates to the technical field of power supplies, and in particular to the technical field of three-phase frequency converter power supplies. Background Technology

[0002] Three-phase frequency converters for electrostatic precipitators can be matched with various dust removal equipment and are widely used in flue gas and dust treatment in many industries such as power, metallurgy, building materials, light industry, and chemical industry. They are an important piece of equipment for efficient dust removal and environmental protection. Three-phase frequency converters are an upgrade of traditional single-phase power frequency power supplies. They retain the silicon rectifier transformer of single-phase power frequency power supplies and are monitored through a split three-phase frequency converter control cabinet.

[0003] Current three-phase frequency converters have a split structure similar to power frequency power supplies. This structure has the following technical drawbacks: It consists of two parts: a high-voltage control cabinet and a transformer. The design structure is large and not convenient for installation and transportation. The control and transformer are located a long distance apart, and the sampling and control signals are easily affected by the field conditions, which can affect the performance of the equipment. Power cables require frequency conversion cables, which greatly increases production costs; if ordinary cables are used, they will cause significant electromagnetic interference to surrounding equipment. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing an integrated three-phase frequency converter power supply structure that can solve the above problems.

[0005] To achieve the above objectives, this utility model proposes an integrated three-phase frequency converter power supply structure, including a frequency converter transformer and a control cabinet. The control cabinet is located on the front of the frequency converter transformer, and the output high-voltage terminal is located on the back of the frequency converter transformer. Heat dissipation devices are located on both sides of the frequency converter transformer, and the incoming line cabinet is located on the side of the control cabinet. The control cabinet contains a filter unit, an IGBT rectifier unit, a heat sink, and connecting plates. The filter unit and the IGBT rectifier unit are mounted on the heat sink, and the heat sink is connected to other components through the connecting plates.

[0006] Preferably, the incoming line cabinet consists of a circuit breaker, a fuse, and corresponding main circuit connection cables.

[0007] Preferably, the heat dissipation device includes oil collection pipes located on the upper and lower sides of the frequency converter transformer, the oil collection pipes being connected to the frequency converter transformer, and several heat dissipation fins arranged side by side between the oil collection pipes on both sides.

[0008] Preferably, the frequency converter is provided with a top cover, on which a dryer, an oil level pressure relief gauge and a thermometer are mounted.

[0009] Preferably, the frequency converter is provided with rollers at its bottom.

[0010] Preferably, the connecting piece is made of copper foil.

[0011] Preferably, the control cabinet is provided with a fan cover on the side away from the incoming line cabinet, and a fan is installed inside the fan cover.

[0012] The beneficial effects of this utility model are as follows: This utility model optimizes the power supply structure, achieves a centrally located weight, significantly improves the stability and safety of the power supply during hoisting, and avoids hoisting risks caused by center of gravity shift; the control cabinet and transformer adopt an integrated design, which greatly shortens the physical distance between the control unit and the transformer, effectively enhancing signal anti-interference capability on the one hand, and significantly improving signal response rate on the other hand; at the same time, the core components are rationally arranged according to functional zones, which not only reduces the risk of electrical circuit failure, but also effectively controls the overall heat generation of the equipment, avoids heat accumulation problems caused by dense local components, and ensures long-term operational stability.

[0013] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a front view of the present invention; Figure 2 This is a schematic diagram of the back of this utility model; Figure 3 This is the front view of this utility model; Figure 4 This is a left view of the present invention; Figure 5 This is a top view of the present invention.

[0015] In the diagram: 1. Incoming line cabinet; 2. Control cabinet; 3. Variable frequency transformer; 4. Heat dissipation device; 5. Output high voltage pile; 6. Top cover; 7. Fan cover; 8. Dryer; 9. Oil level and pressure relief gauge; 10. Thermometer; 11. Roller; 12. Circuit breaker; 13. Fuse; 14. Filter unit; 15. IGBT rectifier unit; 16. Heat sink; 17. Connecting piece. Detailed Implementation

[0016] See Figures 1 to 5An integrated three-phase frequency converter power supply structure includes a frequency converter transformer 3 and a control cabinet 2. The control cabinet 2 is located on the front of the frequency converter transformer 3, and the output high voltage pile 5 is located on the back of the frequency converter transformer 3. Heat dissipation devices 4 are located on both sides of the frequency converter transformer 3, and the incoming line cabinet 1 is located on the side of the control cabinet 2. The control cabinet 2 contains a filter unit 14, an IGBT rectifier unit 15, a heat sink 16, and a connecting piece 17. The filter unit 14 and the IGBT rectifier unit 15 are mounted on the heat sink 16, and the heat sink 16 is connected to other components through the connecting piece 17.

[0017] The frequency converter transformer 3 and the control cabinet 2 are designed as an integrated structure, which greatly reduces the size of the power supply, facilitates transportation and installation, and saves production costs.

[0018] Control cabinet 2 and incoming line cabinet 1 are integrated into one unit.

[0019] The incoming line cabinet 1 consists of a circuit breaker 12, a fuse 13, and corresponding main circuit connection cables.

[0020] The heat dissipation device 4 includes oil collection pipes located on the upper and lower sides of the frequency converter transformer 3. The oil collection pipes are connected to the frequency converter transformer 3, and several heat dissipation fins are arranged side by side between the oil collection pipes on both sides.

[0021] The heat sink dissipates heat from the frequency converter transformer 3 through a self-cooling method.

[0022] The frequency converter 3 is provided with a top cover 6, on which a dryer 8, an oil level pressure relief gauge 9 and a thermometer 10 are mounted.

[0023] The bottom of the frequency converter 3 is provided with rollers 11.

[0024] The connecting piece 17 is made of copper.

[0025] The control cabinet 2 is provided with a fan cover 7 on the side away from the incoming line cabinet 1, and a fan is provided inside the fan cover 7.

[0026] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. An integrated three-phase frequency converter power supply structure, characterized in that: The system includes a frequency converter (3) and a control cabinet (2). The control cabinet (2) is located on the front of the frequency converter (3), and the output high voltage pile (5) is located on the back of the frequency converter (3). Heat dissipation devices (4) are located on both sides of the frequency converter (3), and the incoming line cabinet (1) is located on the side of the control cabinet (2). The control cabinet (2) contains a filter unit (14), an IGBT rectifier unit (15), a heat sink (16), and a connecting piece (17). The filter unit (14) and the IGBT rectifier unit (15) are mounted on the heat sink (16), and the heat sink (16) is connected to other components through the connecting piece (17).

2. The integrated three-phase frequency converter power supply structure as described in claim 1, characterized in that: The incoming line cabinet (1) consists of a circuit breaker (12), a fuse (13) and corresponding main circuit connection cables.

3. The integrated three-phase frequency converter power supply structure as described in claim 1, characterized in that: The heat dissipation device (4) includes oil collection pipes located on the upper and lower sides of the frequency converter (3), the oil collection pipes are connected to the frequency converter (3), and several heat dissipation fins are arranged side by side between the oil collection pipes on both sides.

4. The integrated three-phase frequency converter power supply structure as described in claim 1, characterized in that: The frequency converter (3) is provided with a top cover (6), on which a dryer (8), an oil level pressure relief gauge (9) and a thermometer (10) are mounted.

5. The integrated three-phase frequency converter power supply structure as described in claim 1, characterized in that: The bottom of the frequency converter (3) is provided with rollers (11).

6. The integrated three-phase frequency converter power supply structure as described in claim 1, characterized in that: The connecting piece (17) is made of copper.

7. The integrated three-phase frequency converter power supply structure as described in any one of claims 1 to 6, characterized in that: The control cabinet (2) is provided with a fan cover (7) on the side away from the incoming line cabinet (1), and a fan is provided inside the fan cover (7).

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