High-voltage pulse power transformer

Abstract

The utility model belongs to a high-voltage pulse power transformer in the technical field of pulse equipment. A main transformer (3) and a cover plate assembly (2) are arranged on the device frame (17), an oil passing cooling groove (11) is formed in the face, close to the main transformer (3), of a cooling cover plate (8) of the cover plate assembly (2), the oil passing cooling groove (11) is closed through a closing plate (10) to form an oil passing cooling cavity, and a cooling assembly (21) is further arranged on the cover plate assembly (2). According to the high-voltage pulse power transformer, heat can be quickly and effectively dissipated, transformer oil circulation in the transformer can be achieved, the oil temperature in all positions is balanced, high temperature is not concentrated near a main transformer any more, the working efficiency of the transformer is improved, the working performance is stable, and the risk that cooling liquid enters the transformer oil is effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pulse equipment, and more specifically, relates to a high-voltage pulse power transformer. Background Art

[0002] Pulse transformers are key components in pulse circuits and are widely used in pulse devices such as radar transmitters, laser power supplies, and electron accelerators. They are primarily used to match the impedance between the low-impedance pulse-forming network and the high-impedance high-frequency power tubes in the pulse modulator, increase or decrease the voltage to meet parameter requirements, change the polarity of the pulsed high voltage, and isolate the primary circuit from the secondary circuit to meet circuit application requirements. In existing technologies, pulse transformers have a single primary input and operate independently of the modulator. They are large, heavy, and difficult to transport. When used in special environments, there are also requirements for the tightness of the transformer's internal structure. Pulse transformers generally use an oil-immersed structure to solve insulation and heat dissipation problems. To ensure cooling and heat dissipation, they are relatively large. After the volume is compressed, the amount of oil that can be filled is reduced, and the cooling and heat dissipation performance deteriorates. The temperature rise problem needs to be addressed by adding additional liquid cooling structures and a circulating internal transformer oil structure.

[0003] The prior art includes a technology titled "A High-Power Medium-High-Frequency Segmented High-Voltage Pulse Transformer" and publication numbered "CN104183360B." This technology discloses a high-power medium-high-frequency segmented high-voltage pulse transformer, comprising an IGBT module, energy storage capacitor, primary winding, iron core, secondary winding, and DC-blocking capacitor, all mounted within the transformer's oil tank. The primary winding is sequentially connected to the energy storage capacitor and IGBT module; the secondary winding is connected to the DC-blocking capacitor. The primary winding comprises six sections of copper foil wound in series on a primary bobbin, which is then fitted onto an iron core leg; and the secondary winding comprises 40 sections of copper or aluminum wire wound in series on a secondary bobbin, which is then fitted onto an iron core leg. The present invention is compact, lightweight, and simple in structure. It boasts an operating frequency range of 100 to 20,000 Hz, an output rated voltage range of 60 to 120 kV, an output rated power of no less than 100 kW, and a temperature rise of ≤80 kV during full-load continuous operation. It is an ideal device for high-voltage pulse power supplies for large-scale electrostatic precipitators.

[0004] However, this technology does not involve the technical problems and technical solutions of the present application. Utility Model Content

[0005] The technical problem to be solved by the present invention is: in view of the deficiencies in the existing technology, a high-voltage pulse power transformer with a simple structure is provided, which solves the temperature rise problem while reducing the volume of the pulse transformer, can quickly and effectively dissipate heat, realizes transformer oil circulation inside the transformer, balances the oil temperature at various locations, and prevents high temperature from concentrating near the main transformer, thereby improving the working efficiency of the transformer, and having stable working performance, and effectively avoiding the risk of coolant entering the transformer oil.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is:

[0007] The utility model discloses a high-voltage pulse power transformer. A main transformer and a cover plate assembly are arranged on a device frame. An oil cooling groove is arranged on a cooling cover plate of the cover plate assembly close to the main transformer. The oil cooling groove is closed by a closing plate to form an oil cooling cavity. An oil inlet and an oil outlet are arranged on the closing plate. An oil circulation pump is arranged between the oil outlet and the cooling cover plate. A cooling assembly is also arranged on the cover plate assembly.

[0008] The cooling assembly is arranged on the other side of the cooling cover plate of the cover plate assembly where the oil cooling cavity is not arranged. The cooling assembly includes a cooling pipeline. The cooling pipeline is a reciprocating serpentine structure and covers the back of the oil cooling tank.

[0009] The high-voltage pulse power transformer also includes a liquid cooling device. A liquid cooling pipe is provided on the liquid cooling plate of the liquid cooling device. The liquid cooling pipe is a reciprocating serpentine structure and is located in a layout groove on one side of the liquid cooling plate.

[0010] The liquid cooling pipe is located on the other side of the cold plate and a heat dissipation groove is provided. Both ends of the liquid cooling pipe are connected to the cooling cover through pipe interfaces.

[0011] An oil circulation pump is arranged between the oil outlet and the cooling cover plate.

[0012] The device frame includes a frame base plate and multiple frame support beams, the main transformer is fixedly connected to the frame base plate, the cover plate assembly is connected to the upper part of the multiple frame support beams, and the liquid cooling device is vertically fixed to the side of the frame base plate.

[0013] The main transformer includes a bottom limit plate, an upper connecting plate and an upper angle piece. The bottom limit plate is clamped in the limit groove on the frame bottom plate, the upper connecting plate is connected to the frame support beam, and the upper angle piece is connected to the cover plate assembly.

[0014] The main transformer is connected to the frame bottom plate through a transformer base. The transformer base is an L-shaped structure. Bolts connect the vertical part of the transformer base and the main transformer, and bolts connect the horizontal part of the transformer base and the frame bottom plate.

[0015] The technical solution of this utility model is adopted, and the working principle and beneficial effects are as follows:

[0016] The high-voltage pulse power transformer described in the present invention has a device frame as the basis for arranging related components. A main transformer and a cover plate assembly are arranged on the device frame. The cooling cover plate of the cover plate assembly is provided with an oil cooling groove on the side close to the main transformer. The oil cooling groove is sealed by a closing plate to form an oil cooling cavity. The closing plate is provided with an oil inlet and an oil outlet. At the same time, an oil circulation pump is provided between the oil outlet and the cooling cover plate, cooperating with the oil cooling cavity to pump the high-temperature oil of the main transformer through. A cooling assembly is also provided on the cover plate assembly, and the cooling assembly cools the oil passing through the oil cooling cavity, thereby achieving high-temperature oil flowing out of the main transformer and low-temperature oil after cooling back to the main transformer, achieving reliable oil cooling effect and ensuring that the main transformer can operate under optimal temperature conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents and symbols in the drawings of this specification:

[0018] Figure 1 This is a schematic structural diagram of the high-voltage pulse power transformer described in the present utility model;

[0019] Figure 2 This is a schematic structural diagram of the liquid cooling device for the high-voltage pulse power transformer according to the present invention;

[0020] Figure 3 This is a schematic structural diagram of the cooling assembly of the high-voltage pulse power transformer according to the present invention;

[0021] Figure 4 This is a schematic structural diagram of the cooling assembly of the high-voltage pulse power transformer according to the present invention;

[0022] Figure 5 This is a partial structural diagram of the main transformer portion of the high-voltage pulse power transformer described in the present utility model;

[0023] The marks in the accompanying drawings are: 1. Liquid cooling device; 2. Cover assembly; 3. Main transformer; 4. Liquid cooling plate; 5. Liquid cooling pipe; 6. Pipe interface; 7. Oil circulation pump; 8. Cooling cover; 9. Primary input cover; 10. Closing plate; 11. Oil cooling trough; 12. Bolt; 13. Bottom limit plate; 14. Upper connecting plate; 15. Upper angle piece; 16. Frame support beam; 17. Device frame; 18. Transformer base; 19. Oil inlet; 20. Oil outlet; 21. Cooling assembly; 22. Cooling pipeline; 23. Layout groove; 24. Heat dissipation trough; 25. Frame bottom plate; 26. Vertical part; 27. Horizontal part. DETAILED DESCRIPTION

[0024] The following is a detailed description of the embodiments of the present invention, such as the shapes, structures, positions and connections of the various components involved, the functions and working principles of the various components, etc., by referring to the accompanying drawings.

[0025] As attached Figure 1 -Attached Figure 5 As shown, the present invention is a high-voltage pulse power transformer. A main transformer 3 and a cover assembly 2 are mounted on an apparatus frame 17. The cooling cover 8 of the cover assembly 2 is provided with an oil cooling groove 11 on the side adjacent to the main transformer 3. The oil cooling groove 11 is enclosed by a sealing plate 10 to form an oil cooling cavity. The sealing plate 10 is provided with an oil inlet 19 and an oil outlet 20. A cooling assembly 21 is also provided on the cover assembly 2. The above structure addresses the shortcomings of the prior art and provides an improved technical solution. During the structural setup, the apparatus frame is provided, which serves as the foundation for the arrangement of related components. The main transformer 3 and the cover assembly 2 are arranged on the device frame 17. The cooling cover 8 of the cover assembly 2 is provided with an oil cooling groove 11 on the side close to the main transformer 3. The oil cooling groove 11 is closed by a sealing plate 10 to form an oil cooling chamber. The sealing plate 10 is provided with an oil inlet 19 and an oil outlet 20 for oil inlet and outlet. The cover assembly 2 is also provided with a cooling assembly 21. The oil cooling chamber is used to pump the oil of the main transformer through, and the cooling assembly 21 cools the oil passing through the oil cooling chamber, thereby achieving high-temperature oil flowing out of the main transformer and low-temperature oil after cooling back to the main transformer, achieving reliable oil cooling effect and ensuring that the main transformer can operate at the optimal temperature condition. The high-voltage pulse power transformer described in the utility model has a simple structure, solves the temperature rise problem while reducing the size of the pulse transformer, can quickly and effectively dissipate heat, realizes transformer oil circulation inside the transformer, balances the oil temperature everywhere, and no longer concentrates high temperature near the main transformer, thereby improving the working efficiency of the transformer, and having stable working performance, effectively avoiding the risk of coolant entering the transformer oil.

[0026] The cooling assembly 21 is mounted on the side of the cooling cover plate 8 of the cover plate assembly 2 that is not provided with the oil cooling cavity. The cooling assembly 21 includes a cooling line 22, which has a reciprocating, serpentine structure and covers the back of the oil cooling groove. This structure, with the reciprocating, serpentine structure of the cooling line 22, maximizes coverage of the back of the oil cooling groove, improving heat exchange efficiency and lowering the oil temperature through the cold water in the cooling line.

[0027] The high-voltage pulse power transformer also includes a liquid cooling device 1. A liquid cooling pipe 5 is provided on the liquid cooling plate 4 of the liquid cooling device 1. The liquid cooling pipe 5 is a reciprocating serpentine structure. The liquid cooling pipe 5 is located in a layout groove 23 on one side of the cold plate 4. The liquid cooling pipe 5 is provided with a heat dissipation groove 24 on the other side of the cold plate 4. The two ends of the liquid cooling pipe 5 are connected to the cooling cover 8 through the pipe interface 6. At the same time, a sealing gasket is added during the installation of the pipe interface 6 to eliminate the risk of oil leakage. In the above structure, the liquid cooling device 1 is a pipeline structure, which can be cooling water, to achieve temperature control of the main transformer from the side, and reliably achieve temperature control.

[0028] An oil circulation pump 7 is installed between the oil outlet 20 and the cooling cover 8. In this structure, the oil circulation pump 7 is used to continuously circulate the oil near the main transformer. This continuous oil circulation achieves continuous cooling, keeping the oil at an optimal temperature.

[0029] The device frame 17 comprises a frame base 25 and multiple frame support beams 16. The main transformer 3 is fixedly connected to the frame base 25, the cover assembly 2 is connected to the upper portion of the multiple frame support beams 16, and the liquid cooling device 1 is vertically fixed to the side of the frame base 25. This structure ensures a secure connection between the frame base 25 and the multiple frame support beams 16, the main transformer is securely connected to the frame base 25, and the cooling assembly is positioned above the multiple frame support beams 16, ensuring a secure connection.

[0030] The main transformer 3 comprises a bottom retaining plate 13, an upper connecting plate 14, and an upper angled fitting 15. The bottom retaining plate 13 is snapped into a retaining slot on the frame base plate 25. The upper connecting plate 14 is connected to the frame support beam 16, and the upper angled fitting 15 is connected to the cover assembly 2. In this structure, the bottom retaining plate 13 is used to reliably retain the bottom of the main transformer in the retaining slot when connected. The upper connecting plate 14 is used for fixed connection, and the upper angled fitting 15 is used to connect to the cover assembly 2.

[0031] The main transformer 3 is connected to the frame bottom plate 25 through the transformer base 18. The transformer base 18 has an L-shaped structure. Bolts 12 connect the vertical part 26 of the transformer base 18 and the main transformer 3. Bolts 12 connect the horizontal part 27 of the transformer base 18 and the frame bottom plate 25.

[0032] The device frame 17 serves as the foundation for arranging related components. The device frame 17 houses the main transformer 3 and the cover assembly 2. The cooling cover 8 of the cover assembly 2 is provided with an oil cooling groove 11 on the side adjacent to the main transformer 3. This groove 11 is sealed by a closing plate 10 to form an oil cooling chamber. The closing plate 10 is provided with an oil inlet 19 and an oil outlet 20 for oil inlet and outlet. The cover assembly 2 is also provided with a cooling assembly 21. The oil cooling chamber is used to pump oil from the main transformer through it, and the cooling assembly 21 cools the oil passing through the oil cooling chamber, thereby allowing high-temperature oil to flow out of the main transformer and cool down the low-temperature oil to flow back into the main transformer, achieving reliable oil cooling and ensuring that the main transformer can operate at optimal temperature conditions.

[0033] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A high-voltage pulse power transformer, characterized in that: A main transformer (3) and a cover assembly (2) are arranged on the device frame (17); an oil cooling groove (11) is arranged on a side of the cooling cover (8) of the cover assembly (2) close to the main transformer (3); the oil cooling groove (11) is closed by a closing plate (10) to form an oil cooling cavity; an oil inlet (19) and an oil outlet (20) are arranged on the closing plate (10); and a cooling assembly (21) is further arranged on the cover assembly (2); The high-voltage pulse power transformer further comprises a liquid cooling device (1), wherein a liquid cooling pipe (5) is provided on a liquid cooling plate (4) of the liquid cooling device (1), the liquid cooling pipe (5) being a reciprocatingly curved serpentine structure, and the liquid cooling pipe (5) is located in an arrangement groove (23) on one side of the cooling plate (4); The liquid cooling pipe (5) is provided with a heat dissipation groove (24) on the other side of the liquid cooling plate (4), and both ends of the liquid cooling pipe (5) are connected to the cooling cover plate (8) through the pipe interface (6).

2. The high-voltage pulse power transformer according to claim 1, characterized in that: The cooling assembly (21) is arranged on the other side of the cooling cover plate (8) of the cover plate assembly (2) where the oil cooling cavity is not arranged. The cooling assembly (21) includes a cooling pipe (22). The cooling pipe (22) is a reciprocatingly curved serpentine structure. The cooling pipe (22) covers the back side of the oil cooling tank.

3. The high-voltage pulse power transformer according to claim 1 or 2, characterized in that: An oil circulation pump (7) is provided between the oil outlet (20) and the cooling cover plate (8).

4. The high-voltage pulse power transformer according to claim 1 or 2, characterized in that: The device frame (17) includes a frame base plate (25) and a plurality of frame support beams (16), the main transformer (3) is fixedly connected to the frame base plate (25), the cover plate assembly (2) is connected to the upper part of the plurality of frame support beams (16), and the liquid cooling device (1) is vertically fixed to the side of the frame base plate (25).

5. The high-voltage pulse power transformer according to claim 1 or 2, characterized in that: The main transformer (3) comprises a bottom limiting plate (13), an upper connecting plate (14) and an upper angle piece (15), wherein the bottom limiting plate (13) is clamped in a limiting groove on the frame bottom plate (25), the upper connecting plate (14) is connected to the frame support beam (16), and the upper angle piece (15) is connected to the cover plate assembly (2).

6. The high-voltage pulse power transformer according to claim 1 or 2, characterized in that: The main transformer (3) is connected to the frame bottom plate (25) via a transformer base (18). The transformer base (18) is an L-shaped structure. Bolts (12) connect the vertical portion (26) of the transformer base (18) and the main transformer (3). Bolts (12) connect the horizontal portion (27) of the transformer base (18) and the frame bottom plate (25).

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