Composite type power transformer capable of being quickly assembled

Abstract

The utility model belongs to the technical field of transformers, and particularly relates to a composite quick-assembly power transformer which is characterized in that firstly, an upper magnetic core and a lower magnetic core which are consistent in structure are prepared, and U-shaped bodies of the upper magnetic core and the lower magnetic core are ensured to be matched in size and shape; the upper magnetic core and the lower magnetic core are opened, the manufactured voice coil is arranged between the two core columns in a sleeving mode, then the upper magnetic core and the lower magnetic core are oppositely placed, the core columns are made to be close to each other, and then the upper magnetic core and the lower magnetic core are closed in an aligned mode to form a complete magnetic circuit. Due to the fact that the magnetic core is divided into the upper magnetic core and the lower magnetic core, and the two ends of the upper magnetic core and the lower magnetic core are U-shaped bodies, larger operation space is provided for winding, and winding efficiency is improved. The voice coil is formed by the framework and the coil, the voice coil is of a strip-shaped structure, the upper magnetic core and the lower magnetic core are separated, the voice coil is directly sleeved between the two core columns, then the two magnetic cores are fixed again, coil winding is complete, convenience and rapidness are achieved, the step of winding is omitted, production efficiency is improved, maintenance cost is reduced, and stability and reliability of equipment are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to transformer technical field, especially relate to a composite quick assembly power transformer. BACKGROUND

[0002] Traditional power transformer generally adopts integral magnetic core structure, its manufacturing process usually needs first winding coil directly on the surface of magnetic core core column, then carries out the process such as impregnation, drying etc.This process has the following defects: (1) winding process must be carried out after the magnetic core is formed, and the narrow operation space leads to low winding efficiency; (2) the position of coil needs to be adjusted accurately when the magnetic core is closed, which is easy to cause damage to the insulation layer; (3) the integral structure leads to destructive disassembly when repairing. SUMMARY

[0003] The utility model discloses a composite quick assembly power transformer which aims at solving the technical problem of winding difficulty in the prior art.

[0004] To achieve the above object, the utility model provides a composite quick assembly power transformer, including magnetic core and voice coil, the magnetic core is divided into the upper magnetic core and lower magnetic core of consistent structure, and the both ends of the upper magnetic core and lower magnetic core are U-shaped body, the bottom surface in the U-shaped body is equipped with the core column, and the upper magnetic core and lower magnetic core are oppositely arranged so that the two core columns are close to each other;Voice coil is wound in a hollow cylindrical structure and is sleeved between the two core columns, and the voice coil includes a skeleton and a coil wound on the skeleton, and the outer surface of the skeleton is provided with a winding surface, and the winding surface is provided with a rubber layer for fixing the coil.The core column of the upper magnetic core and the core column of the lower magnetic core are respectively sleeved in the upper through hole and the lower through hole.

[0005] Further, the two ends of the upper magnetic core extend in the vertical direction and form an upper support part, and the two ends of the lower magnetic core extend in the vertical direction and form a lower support part, and the upper support part and the lower support part are connected to each other.

[0006] Further, the inner side surface of the upper support part and the lower support part is provided with an arc groove.

[0007] Further, the skeleton is made of kraft paper, asbestos paper and glass fiber.

[0008] Further, the rubber layer is a hot melt material, and the coil is adhered to the rubber layer.

[0009] Further, one end of the voice coil has a fracture, and the fracture forms two matching connection ends, and the two connection ends form a toothed structure.

[0010] Further, the curing thickness of the rubber layer is 0.05-0.15mm, and the rubber material is epoxy resin or polyurethane with a temperature resistance of more than 200℃.

[0011] Further, the winding diameter of the coil is 0.1-0.3mm, and the winding layer number is 2-4, and an insulation layer is arranged between adjacent layers.

[0012] The composite quick assembly power transformer provided by the embodiment of the utility model has at least one of the following technical effects:

[0013] In the design, first, the upper magnetic core and the lower magnetic core with consistent structure are prepared, and the size and shape of the U-shaped bodies of the two are ensured to be matched; the upper magnetic core and the lower magnetic core are opened, the prepared voice coil is sleeved between the two core columns, then the upper magnetic core and the lower magnetic core are placed oppositely so that the core columns are close to each other, and the upper magnetic core and the lower magnetic core are closed in position to form a complete magnetic circuit. Since the magnetic core is divided into the upper magnetic core and the lower magnetic core, and the two ends are designed as U-shaped bodies, a larger operation space is provided for winding, thereby improving the winding efficiency. The voice coil formed by the skeleton and the coil is a belt-shaped structure, the upper magnetic core and the lower magnetic core are separated, the voice coil is directly sleeved between the two core columns and then the two magnetic cores are fixed again, the complete coil winding is convenient and fast, the winding step is reduced, the production efficiency is improved, the maintenance cost is reduced, and the stability and reliability of the equipment are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0015] Figure 1 The single structure schematic diagram of the upper magnetic core of the composite quick assembly power transformer provided by the embodiment of the utility model is provided.

[0016] Figure 2 The overall structure schematic diagram of the composite quick assembly power transformer provided by the embodiment of the utility model is provided.

[0017] Figure 3 The overall structure schematic diagram of the voice coil of the composite quick assembly power transformer provided by the embodiment of the utility model is provided.

[0018] Figure 4 The flow chart provided by the embodiment of the utility model is provided.

[0019] In the drawings, various reference signs are as follows:

[0020] 100, magnetic core; 110, upper magnetic core; 120, lower magnetic core; 130, core column; 140, upper support part; 150, lower support part; 160, arc surface groove;

[0021] 200, voice coil; 210, skeleton; 220, coil; 230, winding surface; 240, glue layer; 250, upper through hole; 260, lower through hole; 270, breaking point; 280, connecting end. DETAILED DESCRIPTION

[0022] Embodiments of the present application will be described below in detail, examples of which are shown in the 1-4 drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. Hereinafter, the present application will be described by referring to the accompanying drawings. Figures 1-4 The described embodiments are exemplary, and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the present application.

[0023] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0024] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0025] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0026] In one embodiment of the present application, as Figures 1-3As shown, a composite quick assembly power transformer is provided, comprising a magnetic core 100 and a voice coil 200. The magnetic core 100 is divided into an upper magnetic core 110 and a lower magnetic core 120 which are structurally consistent. The upper magnetic core 110 and the lower magnetic core 120 are both U-shaped bodies, and a core column 130 is arranged on the bottom surface of the U-shaped body. The upper magnetic core 110 and the lower magnetic core 120 are oppositely arranged so that the two core columns 130 are close to each other. The voice coil 200 is wound in a hollow cylindrical structure and is sleeved between the two core columns 130. The voice coil 200 comprises a skeleton 210 and a coil 220 wound on the skeleton 210. A winding surface 230 is arranged on the outer surface of the skeleton 210, and a glue layer 240 for fixing the coil 220 is arranged on the winding surface 230.

[0027] Specifically, in the design, first, the upper magnetic core 110 and the lower magnetic core 120 which are structurally consistent are prepared, and the size and shape of the U-shaped bodies of the two are ensured to match. The upper magnetic core 110 and the lower magnetic core 120 are opened, the prepared voice coil 200 is sleeved between the two core columns 130, then the upper magnetic core 110 and the lower magnetic core 120 are oppositely placed so that the core columns 130 are close to each other, and then the upper magnetic core 110 and the lower magnetic core 120 are aligned and closed to form a complete magnetic circuit. Since the magnetic core 100 is divided into the upper magnetic core 110 and the lower magnetic core 120, and the two ends are designed as U-shaped bodies, a larger operation space is provided for winding, thereby improving the winding efficiency. The voice coil 200 formed by the skeleton 210 and the coil 220 is a strip-shaped structure. The upper magnetic core 110 and the lower magnetic core 120 are separated, the voice coil 200 is directly sleeved between the two core columns 130, and then the two magnetic cores 100 are fixed again. The complete coil 220 is wound, which is convenient and fast, reduces the winding step, improves the production efficiency, reduces the maintenance cost, and enhances the stability and reliability of the equipment.

[0028] Further, as shown in the Figures 1-3 The core column 130 of the upper magnetic core 110 and the core column 130 of the lower magnetic core 120 are respectively sleeved in the upper through hole 250 and the lower through hole 260. On the basis of the original winding into a hollow cylindrical structure, the voice coil 200 is increased with the upper through hole 250 and the lower through hole 260. The positions, sizes and shapes of the two through holes need to match the core columns 130 of the upper magnetic core 110 and the lower magnetic core 120, so as to ensure that the core columns 130 can be smoothly sleeved.

[0029] Further, as shown in the Figures 1-3As shown, the two ends of the upper magnetic core 110 extend out in the vertical direction with the upper support portion 140, and the two ends of the lower magnetic core 120 extend out in the vertical direction with the lower support portion 150. The upper support portion 140 and the lower support portion 150 are connected to each other in a close-fitting manner. Specifically, the initial upper support portion 140 and the lower support portion 150 are separately arranged, and then are pasted together by welding or pasting after being sleeved into the voice coil 200. The close-fitting connection of the upper support portion 140 and the lower support portion 150 significantly enhances the overall structural strength of the transformer. This design enables the transformer to withstand greater mechanical stress and vibration, thereby improving the reliability and durability of the device.

[0030] Further, as shown in Figures 1-3 The inner side of the upper support portion 140 and the lower support portion 150 is provided with an arc groove 160. The shape, size and position of these arc grooves 160 need to be accurately calculated to ensure that they can closely fit the outer surface of the magnetic core 100, forming an effective heat dissipation channel and electromagnetic shielding layer.

[0031] Further, as shown in Figures 1-3 The framework 210 is made of kraft paper, asbestos paper and glass fiber. Specifically, the addition of kraft paper enables the framework 210 to have good mechanical strength and toughness, and can withstand the tension and pressure during the winding process of the coil 220, thereby ensuring the stability of the shape and position of the voice coil 200.

[0032] Further, as shown in Figures 1-3 The glue layer 240 is a hot melt material, and the coil 220 is adhered to the glue layer 240. The hot melt material will soften and have certain adhesion after heating, and can quickly and firmly adhere the coil 220 to the framework 210. Common hot melt materials include hot melt glue, hot melt resin, etc.

[0033] Further, as shown in Figures 1-3 One end of the voice coil 200 has a fracture 270, which forms two matching connection ends 280. The two connection ends 280 form a toothed structure that engages with each other. When it is necessary to connect the voice coil 200 to a power supply or other circuit elements, the two connection ends 280 with the toothed structure can be engaged with each other to achieve the connection. This connection method is not only simple and fast, but also can provide stable electrical connection.

[0034] Further, as shown in Figures 1-3 The voice coil 200 is divided into two coils 220 between the core columns 130 of the two magnetic cores 100, which are sequentially divided into a primary coil 220 and a secondary coil 220. The primary coil 220 and the secondary coil 220 each have a wire outlet end to connect the remaining components.

[0035] Further, the cured thickness of the glue layer 240 is 0.05-0.15 mm, and the glue material is epoxy resin or polyurethane resistant to temperature above 200℃. The wire diameter of the coil 220 is 0.1-0.3 mm, and the number of winding layers is 2-4 layers, with an insulating layer between adjacent layers.

[0036] In another embodiment of the present application, as shown in Figures 1-4 there is also provided a process for quickly assembling a power transformer, comprising the following steps:

[0037] S100: separately preparing the upper magnetic core 110 and the lower magnetic core 120, so that the U-shaped body of the two magnetic cores 100 forms coaxial core columns 130;

[0038] S200: pre-preparing the voice coil 200, after winding the coil 220 on the winding surface 230 of the skeleton 210, coating the glue layer 240 on the winding surface 230 to fix the coil 220, forming a pre-prepared hollow cylindrical structure;

[0039] S300: axially sleeving the pre-prepared voice coil 200 on the core column 130 of the lower magnetic core 120;

[0040] S400: aligning and closing the upper magnetic core 110 and the lower magnetic core 120, so that the end faces of the core columns 130 of the two magnetic cores 100 abut each other, and the voice coil 200 is simultaneously sleeved on the combined column formed by the two core columns 130;

[0041] S500: fixing the closed upper magnetic core 110 and lower magnetic core 120 by welding or bonding.

[0042] Specifically, the process greatly simplifies the assembly process of the power transformer by pre-preparing the voice coil 200 and aligning and closing the magnetic core 100. Compared with the traditional assembly method, the process reduces the cumbersome winding and fixing steps, and improves the production efficiency. By welding or bonding the magnetic core 100, the structural stability and reliability of the transformer are ensured. This fixing method is more secure than the traditional mechanical fixing, and can withstand greater mechanical stress and vibration.

[0043] Further, it further comprises the steps of:

[0044] S110: mixing the iron-silicon-aluminum alloy powder with 0.5-1.2wt% binder;

[0045] S120: pressing into a U-shaped core blank under a pressure of 500-800MPa;

[0046] S130: sintering at 1200-1400℃ in an argon environment for 2-4 hours to form a densified magnetic core.

[0047] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A composite quick assembly power transformer, characterized by, The application relates to a magnetic core (100) and a voice coil (200), the magnetic core (100) is divided into an upper magnetic core (110) and a lower magnetic core (120) with consistent structures, the upper magnetic core (110) and the lower magnetic core (120) are both U-shaped bodies, a core column (130) is arranged on the bottom surface of the U-shaped body, the upper magnetic core (110) and the lower magnetic core (120) are oppositely arranged so that the two core columns (130) are close to each other, the voice coil (200) is wound in a hollow cylindrical structure and is sleeved between the two core columns (130), the voice coil (200) comprises a framework (210) and a coil (220) wound on the framework (210), a winding surface (230) is arranged on the outer surface of the framework (210), a glue layer (240) for fixing the coil (220) is arranged on the winding surface (230), the voice coil (200) is provided with an upper through hole (250) and a lower through hole (260), the core column (130) of the upper magnetic core (110) and the core column (130) of the lower magnetic core (120) are respectively sleeved in the upper through hole (250) and the lower through hole (260).

2. The composite quick assembly power transformer according to claim 1, wherein, The two ends of the upper magnetic core (110) extend out of an upper supporting part (140) in the vertical direction, the two ends of the lower magnetic core (120) extend out of a lower supporting part (150) in the vertical direction, and the upper supporting part (140) and the lower supporting part (150) are connected to each other.

3. The composite quick assembly power transformer according to claim 2, wherein, Arc grooves (160) are arranged on the inner sides of the upper supporting part (140) and the lower supporting part (150).

4. The composite quick assembly power transformer according to claim 1, wherein, The curing thickness of the glue layer (240) is 0.05-0.15 mm, and the glue material is epoxy resin or polyurethane with a temperature resistance of 200 DEG C or above.

5. The composite quick assembly power transformer according to claim 1, wherein, The wire diameter of the coil (220) is 0.1-0.3 mm, the wire winding layer number is 2-4, and an insulation layer is arranged between adjacent layers.

6. The composite quick assembly power transformer according to claim 1, wherein, The glue layer (240) is a hot melt material, and the coil (220) is adhered to the glue layer (240).

7. The composite quick assembly power transformer according to claim 1, wherein, A fracture (270) is arranged on one end of the voice coil (200), the fracture (270) forms two matched connecting ends (280), and the two connecting ends (280) form a toothed structure which is engaged with each other.

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