Epoxy resin monolithic cast three-dimensional roll core transformer

Abstract

The utility model discloses a three -dimensional volume core transformer of epoxy resin integral casting, including two support components, the both ends of two support components top jointly installed with two lower support beams, the top of two lower support beams jointly installs the pouring transformer base body, and both ends of pouring transformer base body top all are installed with upper positioning beam. The utility model discloses through the use of support component, makes the transformer have the displacement space advantage, utilizes this displacement space and can alleviate thermal expansion and cold contraction stress, and the deformation of pouring transformer base body operation because of temperature change produces can pass through displacement space natural release, avoids structural member deformation or core uneven stress, guarantees the high -efficient stable operation of pouring transformer base body, can reduce vibration transmission simultaneously: displacement space can absorb the trace vibration when the core works, reduces the impact to the installation foundation, makes the noise level far lower than national standard, further simplifies the installation adaptability.

Description

Technical Field

[0001] This utility model relates to the technical field of three-dimensional wound core transformers, specifically a three-dimensional wound core transformer integrally cast with epoxy resin. Background Technology

[0002] The three-dimensional wound core transformer is an energy-saving power transformer. It creatively reforms the traditional laminated magnetic circuit structure and three-phase layout of power transformers, making the product performance more optimized.

[0003] A search revealed patent number CN209401429U, entitled "A High-Temperature Resistant and Flame-Retardant Epoxy Resin Dry-Type Transformer." The transformer includes a base, an iron core mounted on the upper middle outer surface of the base, a high-voltage dovetail lower clamp on one side of the lower outer surface of the iron core, a low-voltage dovetail lower clamp on the other side of the lower outer surface of the iron core, a cast-in-place shell on the middle outer surface of the middle inner surface of the cast-in-place shell, a warning label on the front middle outer surface of the cast-in-place shell, and a high-voltage dovetail upper clamp on one side of the upper outer surface of the iron core. This high-temperature resistant and flame-retardant epoxy resin dry-type transformer, with its cast-in-place shell, warning symbols, and knob handle, provides heat insulation and flame retardancy protection for the overall structure. It also provides good warning in areas with poor lighting and allows for tool-free assembly of some components, making it more convenient and promising for future applications. Research and analysis revealed that although it can provide protection for the overall structure in terms of heat insulation and flame retardancy, and can also provide a good warning effect in areas with poor lighting, it still has the following drawbacks to a certain extent.

[0004] For example, the position of the cast outer shell after installation is constant, lacking sufficient displacement space. Rigid fixation may cause stress concentration and cracks in the silicon steel sheets of the iron core, affecting the uniformity of the magnetic circuit and its lifespan. Furthermore, the vibration generated during operation cannot be buffered, which will amplify noise and exacerbate no-load losses. At the same time, long-term stress accumulation may cause local overheating, requiring frequent shutdowns for maintenance. To solve the above technical problems, we have designed a three-dimensional wound iron core transformer with integral epoxy resin casting. Utility Model Content

[0005] The purpose of this invention is to provide a three-dimensional wound core transformer integrally cast with epoxy resin, which has the advantage of displacement space. It solves the problems that the position of the cast outer shell after installation is constant, lacking a certain displacement space, and rigid fixation may cause stress concentration and cracks in the silicon steel sheets of the core, affecting the uniformity of the magnetic circuit and lifespan; the vibration generated during operation cannot be buffered, which will amplify the noise and increase the no-load loss; and the long-term stress accumulation may cause local overheating, requiring frequent shutdowns for maintenance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a three-dimensional wound core transformer integrally cast with epoxy resin, comprising two supporting components. Two lower supporting beams are installed at both ends of the top of the two supporting components. A cast transformer base is installed at the top of the two lower supporting beams. Upper positioning beams are installed at both ends of the top of the cast transformer base. Several high-voltage and low-voltage conductive bars are respectively connected to the top of both ends of the cast transformer base. The supporting components include a supporting base. Flexible supporting blocks are placed at both ends of the top of the supporting base. The top of the flexible supporting blocks is connected to the bottom of the lower supporting beams. Movable holes are opened through both ends of the top of the supporting base. Elastic rubber rings are embedded inside the movable holes. Positioning studs are connected to the bottom of the flexible supporting blocks. The bottom of the positioning studs passes through the elastic rubber rings and extends into the interior of the supporting base.

[0007] Preferably, the top of the upper positioning beam has lifting holes on both sides, and connecting screws are provided on both sides of the opposite ends of the two lower support beams and the opposite ends of the two upper positioning beams. Connecting screws are provided on both sides of the opposite side of the upper positioning beam and the lower support beam. Elastic washers and positioning nuts are sequentially fitted on the outer ends of connecting screws and the top and bottom of connecting screws.

[0008] Preferably, the positioning stud is threaded with a positioning nut and an elastic washer from bottom to top on its exterior. The top of the elastic washer slides in contact with the top of the inner wall of the support base, and the outer diameter of the elastic washer is larger than the outer diameter of the movable hole.

[0009] Preferably, a support ring is connected to the top of the inner wall of the support base, and a plurality of dampers are connected to the inner wall of the support ring. An arc-shaped support block is connected to the side of the damper away from the support ring.

[0010] Preferably, each of the two support seats is connected to a connecting component on the side that is far apart from each other. The connecting component includes a flexible connecting plate. Both ends of the bottom of the flexible connecting plate are provided with connecting screws. The top of the connecting screws penetrates through the flexible connecting plate, the lower support beam and the upper positioning beam. One side of the flexible connecting plate is connected to the support seat.

[0011] The top and bottom of the connecting screw are sequentially fitted with elastic washers and threaded positioning nuts. The two elastic washers are respectively in contact with the flexible connecting plate and the upper positioning beam on opposite sides.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, through the use of supporting components, provides the transformer with the advantage of displacement space. This displacement space can alleviate the stress caused by thermal expansion and contraction. Deformation of the cast transformer base caused by temperature changes during operation can be naturally released through the displacement space, avoiding structural component deformation or uneven stress on the core, and ensuring the efficient and stable operation of the cast transformer base. At the same time, it can reduce vibration transmission. The displacement space can absorb the slight vibration of the core during operation, reducing the impact on the installation foundation and making the noise level far below the national standard. Furthermore, it simplifies installation adaptability. Under the modular design, the displacement space allows for minor error adjustments during rapid assembly, improving deployment efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the connecting component structure of this utility model; Figure 3 This utility model Figure 2 A bottom view; Figure 4 This is an exploded view of the supporting component structure of this utility model; Figure 5 This utility model Figure 4 A bottom view; Figure 6 This utility model Figure 4 The left view; Figure 7 This is a partial structural diagram of the present invention.

[0014] In the diagram: 1. Support component; 101. Support base; 102. Elastic rubber ring; 103. Flexible support block; 104. Movable hole; 105. Elastic washer II; 106. Arc-shaped support block; 107. Support ring; 108. Damper; 109. Positioning nut II; 1010. Positioning stud; 2. Lower support beam; 3. Cast transformer base; 4. Connecting component; 41. Flexible connecting plate; 42. Connecting screw III; 43. Positioning nut III; 44. Elastic washer III; 5. High-voltage conductor bar; 6. Upper positioning beam; 7. Low-voltage conductor bar; 8. Lifting hole; 9. Positioning nut I; 10. Elastic washer I; 11. Connecting screw I; 12. Connecting screw II. Detailed Implementation

[0015] Please see Figures 1-7A three-dimensional wound core transformer integrally cast with epoxy resin includes two supporting components 1. Two lower supporting beams 2 are installed at both ends of the top of the two supporting components 1. A cast transformer base 3 is installed at the top of the two lower supporting beams 2. An upper positioning beam 6 is installed at both ends of the top of the cast transformer base 3. Several high-voltage conductive bars 5 and low-voltage conductive bars 7 are respectively connected to the top of both ends of the cast transformer base 3. The supporting component 1 includes a supporting base 101. Flexible supporting blocks 103 are placed at both ends of the top of the supporting base 101. The top of the flexible supporting blocks 103 is connected to the bottom of the lower supporting beams 2. Movable holes 104 are opened through both ends of the top of the supporting base 101. Elastic rubber rings 102 are embedded inside the movable holes 104. A positioning stud 1010 is connected to the bottom of the flexible supporting block 103. The bottom of the positioning stud 1010 passes through the elastic rubber ring 102 and extends into the interior of the supporting base 101.

[0016] Lifting holes 8 are provided on both sides of the top of the upper positioning beam 6. Connecting screws 11 are provided on both sides of the opposite ends of the two lower support beams 2 and the opposite ends of the two upper positioning beams 6. Connecting screws 22 are provided on both sides of the opposite side of the upper positioning beam 6 and the lower support beam 2. Elastic washers 10 and threaded positioning nuts 9 are sequentially fitted onto the outer ends of connecting screws 11 and the outer top and bottom of connecting screws 22. The lifting holes 8 facilitate the installation of external lifting rings, enabling the lifting and transfer of the three-dimensional wound core transformer. The cooperation of connecting screws 11, elastic washers 10, and positioning nuts 9 connects and positions the two lower support beams 2 and the upper positioning beam 6, improving the stability of the three-dimensional wound core transformer.

[0017] The positioning stud 1010 is threaded with a positioning nut 109 and an elastic washer 105 from bottom to top. The top of the elastic washer 105 slides in contact with the top of the inner wall of the support base 101. The outer diameter of the elastic washer 105 is larger than the outer diameter of the movable hole 104. Through the cooperation of the positioning stud 1010, the positioning nut 109 and the elastic washer 105, the flexible support block 103 can be positioned to prevent it from detaching from the support base 101.

[0018] A support ring 107 is connected to the top of the inner wall of the support base 101. Several dampers 108 are connected to the inner wall of the support ring 107. An arc-shaped support block 106 is connected to the side of the damper 108 away from the support ring 107. The inner wall of the support ring 107 is in sliding contact with the outer side of the elastic washer 105.

[0019] Each of the two support bases 101 has a connecting component 4 connected to its opposite side. The connecting component 4 includes a flexible connecting plate 41, with connecting screws 42 at both ends of the bottom of the flexible connecting plate 41. The top of the connecting screws 42 passes through the flexible connecting plate 41, the lower support beam 2, and the upper positioning beam 6. One side of the flexible connecting plate 41 is connected to the support base 101. Through the cooperation of the flexible connecting plate 41, connecting screws 42, positioning nuts 43, and elastic washers 44, the support base 101 can be connected to the upper positioning beam 6, improving the stability of the three-dimensional wound core transformer. Both the upper positioning beam 6 and the lower support beam 2 have through holes for use with the connecting screws 42, the inner diameter of which is larger than the outer diameter of the connecting screws 42.

[0020] The top and bottom of the connecting screw 3 42 are sequentially fitted with elastic washers 3 44 and threaded positioning nuts 3 43. The opposite sides of the upper and lower elastic washers 3 44 are in contact with the flexible connecting plate 41 and the upper positioning beam 6, respectively.

[0021] In use, the flexible support block 103 is installed on the top of the cast transformer base 3, and then the cast transformer base 3 and the flexible support block 103 are transferred and installed on the top of the support base 101. At this time, the bottom of the positioning stud 1010 passes through the elastic rubber ring 102. Then, the elastic washer 105 and the positioning nut 109 are installed in sequence on the bottom of the positioning stud 1010. Due to the cooperation of the positioning stud 1010, the flexible support block 103 and the elastic rubber ring 102, the cast transformer base 3 can have a certain displacement space after installation. This displacement space can alleviate thermal expansion and contraction stress. Deformation caused by temperature changes during the operation of the cast transformer base 3 can be naturally released through the displacement space, avoiding structural component deformation or uneven stress on the core, and ensuring the efficient and stable operation of the cast transformer base 3. At the same time, it can reduce vibration transmission: the displacement space can absorb the slight vibration of the core during operation, reducing the impact on the installation foundation and making the noise level far below the national standard (such as the S22-MRL-500 / 10 model). It further simplifies installation adaptability: under the modular design, the displacement space allows for minor error adjustments during rapid splicing, improving deployment efficiency.

[0022] In summary, this epoxy resin integrally cast three-dimensional wound core transformer, through the use of support component 1, solves the problems of a fixed position of the cast outer shell after installation, lack of displacement space, rigid fixation that may cause stress concentration and cracks in the silicon steel sheets of the core, affecting the uniformity of the magnetic circuit and its lifespan; the inability to buffer vibrations generated during operation, which amplifies noise and exacerbates no-load losses; and the potential for localized overheating due to long-term stress accumulation, requiring frequent shutdowns for maintenance.

Claims

1. A three-dimensional wound core transformer integrally cast with epoxy resin, comprising two supporting components (1), characterized in that: Two lower support beams (2) are installed at both ends of the top of the two support components (1). The top of the two lower support beams (2) is installed on the top of the two lower support beams (2). The top of the cast transformer base (3) is installed at both ends of the top of the cast transformer base (3). Several high-voltage conductive bars (5) and low-voltage conductive bars (7) are connected to the top of the two ends of the cast transformer base (3). The support component (1) includes a support base (101). Flexible support blocks (103) are placed at both ends of the top of the support base (101). The top of the flexible support block (103) is connected to the bottom of the lower support beam (2). Movable holes (104) are opened through both ends of the top of the support base (101). Elastic rubber rings (102) are embedded inside the movable holes (104). The bottom of the flexible support block (103) is connected to a positioning stud (1010). The bottom of the positioning stud (1010) passes through the elastic rubber ring (102) and extends into the interior of the support base (101).

2. The epoxy resin integrally cast three-dimensional wound core transformer according to claim 1, characterized in that: The upper positioning beam (6) has two lifting holes (8) through it on both sides of the top. The two lower support beams (2) and the two upper positioning beams (6) are provided with connecting screws (11) through them. The upper positioning beam (6) and the lower support beam (2) are provided with connecting screws (2) through them on both sides of the opposite side. The two ends of the connecting screws (11) and the top and bottom of the connecting screws (2) are provided with elastic washers (10) and threaded positioning nuts (9) in sequence.

3. A three-dimensional wound core transformer integrally cast with epoxy resin according to claim 1, characterized in that: The positioning stud (1010) is threaded with a positioning nut (109) and an elastic washer (105) from bottom to top. The top of the elastic washer (105) slides in contact with the top of the inner wall of the support (101). The outer diameter of the elastic washer (105) is larger than the outer diameter of the movable hole (104).

4. A three-dimensional wound core transformer integrally cast with epoxy resin according to claim 1, characterized in that: The top of the inner wall of the support base (101) is connected to a support ring (107), and the inner wall of the support ring (107) is connected to several dampers (108). An arc-shaped support block (106) is connected to the side of the damper (108) away from the support ring (107).

5. A three-dimensional wound core transformer integrally cast with epoxy resin according to claim 1, characterized in that: Each of the two support bases (101) is connected to a connecting component (4) on the side away from each other. The connecting component (4) includes a flexible connecting plate (41). Both ends of the bottom of the flexible connecting plate (41) are provided with connecting screws (42). The top of the connecting screws (42) passes through the flexible connecting plate (41), the lower support beam (2) and the upper positioning beam (6). One side of the flexible connecting plate (41) is connected to the support base (101).

6. A three-dimensional wound core transformer integrally cast with epoxy resin according to claim 5, characterized in that: The top and bottom of the connecting screw three (42) are respectively fitted with elastic washers three (44) and threaded positioning nuts three (43). The two elastic washers three (44) are respectively in contact with the flexible connecting plate (41) and the upper positioning beam (6).

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