Transformer and reactor magnetic shunt fixing device

Abstract

The utility model discloses a transformer and electric reactor magnetic shunt fixing device which comprises a web plate, a magnetic shunt, an iron yoke and an iron core column, a reinforcing plate is installed on the web plate, the magnetic shunt is installed between the iron yoke and the iron core column, a magnetic shunt fixing structure is installed between the reinforcing plate and the magnetic shunt, the magnetic shunt fixing structure comprises a gasket and a bolt, the reinforcing plate is provided with an opening, and the gasket and the bolt are arranged in the opening. Bolts penetrate through the gaskets and the holes of the reinforcing plates and are installed on the clamping plates of the magnetic shunt. According to the utility model, the magnetic shunt fixing structure is arranged between the magnetic shunt and the web reinforcing plate of the transformer and reactor equipment, so that the horizontal assembly of the magnetic shunt can be maintained, the effect of absorbing the magnetic leakage of the coil is improved, the vibration of the magnetic shunt is reduced, the process is simple, and the manufacturing cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer equipment, in particular to a magnetic shunt fixing device for a transformer and a reactor. Background Art

[0002] For transformers and reactors, since their coils generate a certain amount of leakage flux, leakage flux concentration is prone to occur at the core clamp position, leading to overheating. In order to solve this problem, equipment manufacturers will use a magnetic shunt structure.

[0003] In order to absorb more leakage flux of the coil, the magnetic shunt will try to cover the leakage flux area of ​​the coil. The length and width of the magnetic shunt are usually large and the weight is heavy. At the same time, in order to save materials and control the overall height of the product, the height of the magnetic shunt is usually small, but the larger length and width and smaller height make the magnetic shunt as a whole a thin flat plate structure. Therefore, after the magnetic shunt is assembled on the core column, the core column can only support a smaller area of ​​the magnetic shunt, and the remaining unsupported area will sag and bend, which is not conducive to absorbing the leakage flux of the coil. When subsequent products are running, the vibration of the magnetic shunt will be larger, resulting in higher equipment noise. Some equipment manufacturers use the integral casting method to fix the magnetic shunt to improve the rigidity, but this method is costly, complex process, and the effect is not obvious.

[0004] Therefore, it is necessary to solve the problem that the existing magnetic shunt fixing structure cannot maintain the horizontal assembly of the magnetic shunt. Utility Model Content

[0005] The utility model aims to overcome the problem that the existing magnetic shunt fixing structure cannot maintain the horizontal assembly of the magnetic shunt, and provides a magnetic shunt fixing device for a transformer and a reactor.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A magnetic shunt fixing device for a transformer and a reactor comprises a web, a magnetic shunt, an iron yoke and an iron core column, a reinforcing plate is installed on the web, a magnetic shunt is installed between the iron yoke and the iron core column, a magnetic shunt fixing structure is installed between the reinforcing plate and the magnetic shunt, the magnetic shunt fixing structure comprises a gasket and a bolt, an opening is arranged on the reinforcing plate, and the bolt passes through the opening of the gasket and the reinforcing plate and is installed on a clamping plate of the magnetic shunt.

[0008] Furthermore, the gasket includes a first steel gasket, an insulating gasket, and a second steel gasket, and the first steel gasket, the insulating gasket, and the second steel gasket are installed in sequence from the clamping plate of the magnetic shunt to the reinforcing plate.

[0009] Furthermore, the inner hole of the steel washer 1 is the same as the outer diameter of the insulating washer, and the inner hole of the steel washer 2 is the same as the outer diameter of the bolt.

[0010] Furthermore, the reinforcing plate is provided with an inner hole, the insulating gasket is provided with a protruding structure, and the protruding structure of the insulating gasket is installed in the inner hole of the reinforcing plate.

[0011] Furthermore, the magnetic shunt fixing structure comprises a spring, and the spring is installed between the washer and the bolt.

[0012] Furthermore, the spring is a butterfly spring, and the number of the butterfly springs is 2.

[0013] Furthermore, the washers, springs and bolts are all treated with blackening.

[0014] Furthermore, the performance grade of the bolt is 8.8 or 12.9.

[0015] Furthermore, the opening of the reinforcing plate is a long hole.

[0016] Furthermore, a threaded hole is provided on the clamp of the magnetic shunt, and the position of the threaded hole is opposite to the position of the opening of the reinforcing plate.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects:

[0018] The utility model proposes a transformer and reactor magnetic shunt fixing device, in which a magnetic shunt fixing structure is arranged between the magnetic shunt and the web reinforcement plate of the transformer and reactor equipment, which can maintain the horizontal assembly of the magnetic shunt, improve the effect of absorbing coil leakage magnetic flux, and reduce the vibration of the magnetic shunt, while the process is simple and the manufacturing cost is saved.

[0019] The utility model proposes a transformer and reactor magnetic shunt fixing device that pries the magnetic shunt and the web reinforcement plate together, which can maintain the horizontal assembly of the magnetic shunt, improve the effect of absorbing coil leakage, and reduce the vibration of the magnetic shunt. At the same time, the process is simple and the manufacturing cost is saved. In addition, the coordination of the internal components of the magnetic shunt fixing structure can ensure the insulation between the bolt and the inner hole of the reinforcement plate to prevent the short circuit between the two, and at the same time resist the large tensile stress caused by the vibration of the magnetic shunt, ensuring the assembly stability of the magnetic shunt fixing structure.

[0020] Furthermore, the performance grade of the bolt is selected to be 8.8 or 12.9, which can prevent the magnetic shunt vibration from cracking or even breaking the bolt.

[0021] Furthermore, the insulating gasket should have a protruding structure and penetrate into the inner hole of the reinforcing plate to ensure insulation between the bolt and the inner hole of the reinforcing plate to prevent short circuit between the two. The wall thickness of the insulating gasket is increased to ensure insulation reliability.

[0022] Furthermore, the number of butterfly springs is two, which can resist the large tensile stress caused by the vibration of the magnetic shunt and ensure the assembly stability of the magnetic shunt fixing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 1 This is a front view of a magnetic shunt fixing device for a transformer and a reactor of the utility model;

[0025] Figure 2 It is a left view of a magnetic shunt fixing structure of a magnetic shunt fixing device for a transformer and a reactor of the utility model;

[0026] Figure 3 Yes Figure 2 A local detail view of part I of the magnetic shunt fixing structure;

[0027] FIG4( a ) is a cross-sectional schematic diagram of an insulating gasket in a magnetic shunt fixing device for a transformer and a reactor according to the present invention;

[0028] FIG4( b ) is a top view of an insulating gasket in a magnetic shunt fixing device for a transformer and a reactor according to the utility model;

[0029] FIG5(a) is a front view of a reinforcing plate in a magnetic shunt fixing device for a transformer and a reactor according to the utility model;

[0030] FIG5( b ) is a side view of a reinforcing plate in a magnetic shunt fixing device for a transformer and a reactor according to the present invention;

[0031] In the figure: 1. web; 2. reinforcing plate; 3. magnetic shunt; 4. magnetic shunt fixing structure; 5. iron yoke; 6. iron core column; 41. steel washer 1; 42. insulating washer; 43. steel washer 2; 44. butterfly spring; 45. bolt. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] Embodiment 1

[0035] See also Figure 1 and Figure 2 A magnetic shunt fixing device for a transformer and a reactor comprises a web 1, a magnetic shunt 3, an iron yoke 5, and an iron core column 6. A reinforcing plate 2 is installed on the web 1, the magnetic shunt 3 is installed between the iron yoke 5 and the iron core column 6, a magnetic shunt fixing structure 4 is installed between the reinforcing plate 2 and the magnetic shunt 3, the magnetic shunt fixing structure 4 comprises a gasket and a bolt 45, an opening is arranged on the reinforcing plate 2, and the bolt 45 penetrates the gasket and the opening of the reinforcing plate 2 and is installed on the clamping plate of the magnetic shunt 3.

[0036] See also Figure 3 The washers include a steel washer 41, an insulating washer 42, and a steel washer 43. The steel washer 41, the insulating washer 42, and the steel washer 43 are installed in sequence from the clamping plate of the magnetic shunt 3 to the reinforcing plate 2.

[0037] The inner hole of the first steel washer 41 has the same outer diameter as the insulating washer 42 , and the inner hole of the second steel washer 43 has the same outer diameter as the bolt 45 .

[0038] 5( a ) and 5 ( b ), the reinforcing plate 2 is provided with an inner hole, and referring to FIG. 4 ( a ) and 4 ( b ), the insulating gasket 42 is provided with a protruding structure, and the protruding structure of the insulating gasket 42 is installed in the inner hole of the reinforcing plate 2 .

[0039] The magnetic shunt fixing structure 4 includes a spring installed between a washer and a bolt 45 .

[0040] The spring is a butterfly spring 44 , and the number of the butterfly springs 44 is two.

[0041] The washers, springs and bolts 45 are all blackened.

[0042] The performance grade of bolt 45 is 8.8 or 12.9.

[0043] The opening of the reinforcing plate 2 is a long hole.

[0044] A threaded hole is provided on the clamp of the magnetic shunt 3 , and the position of the threaded hole is opposite to the position of the opening of the reinforcing plate 2 .

[0045] Embodiment 2

[0046] This embodiment provides a transformer and a reactor magnetic shunt fixing device, referring to Figure 1-Figure 3 , the reinforcing plate 2 is welded on the web 1, the magnetic shunt 3 is assembled between the iron yoke 5 and the iron core column 6, and the reinforcing plate 2 and the magnetic shunt 3 are connected through the magnetic shunt fixing structure 4. Referring to Figure 5(a), the opening of the reinforcing plate 2 is a long hole. The magnetic shunt 3 clamp has a threaded hole, and the position of the threaded hole is consistent with the position of the opening of the reinforcing plate 2. The specifications of the magnetic shunt fixing structure 4 match the magnetic shunt 3 and the reinforcing plate 2.

[0047] The magnetic shunt fixing structure 4 is assembled on the reinforcing plate 2. The magnetic shunt fixing structure 4 includes a steel washer 1 41, an insulating washer 42, a steel washer 2 43, a butterfly spring 44 and a bolt 45. The assembly positions are: steel washer 1 41, insulating washer 42, steel washer 2 43, butterfly spring 44 and bolt 45. Figure 3 The assembly position cannot be changed. Optionally, in a set of magnetic shunt fixing structure 4, the number of butterfly springs 44 is 2, and the number of other materials is 1.

[0048] Optionally, the tension of the bolts 45 is calculated according to the weight of the magnetic shunt, and the number and size of the bolts 45 are selected, for example: M8, M12, M16, M20, etc. The length of the bolts 45 is selected according to the distance between the reinforcing plate 2 and the magnetic shunt 3 .

[0049] Optionally, the performance grade of the bolt is selected to be 8.8 or 12.9, which can prevent the magnetic shunt vibration from cracking or even breaking the bolt.

[0050] Optionally, referring to FIG. 4(a), FIG. 4(b), FIG. 5(a) and FIG. 5(b), the insulating gasket has a protruding structure and penetrates into the inner hole of the reinforcing plate to ensure insulation between the bolt and the inner hole of the reinforcing plate to prevent short circuit between the two. At the same time, the wall thickness of the insulating gasket is increased to ensure insulation reliability.

[0051] Optionally, the steel washer 41, the steel washer 43, the butterfly spring 44 and the bolt 45 need to be blackened.

[0052] Optional, 2 butterfly springs can resist the large pulling force caused by the vibration of the magnetic shunt, ensuring the stability of the magnetic shunt fixed structure assembly

[0053] Optionally, the inner holes of the steel washer 1 41 and the steel washer 2 43 are different. The inner hole of the steel washer 1 41 matches the outer diameter of the insulating washer 42 , and the inner hole of the steel washer 2 43 matches the outer diameter of the bolt 45 .

[0054] After the magnetic shunt 3 is assembled on the core column 6, the magnetic shunt fixing structure 4 provided in this embodiment pries the magnetic shunt 3 together with the web 1 and the reinforcing plate 2, which can not only maintain the horizontal assembly of the magnetic shunt 3, but also improve the effect of absorbing the leakage magnetic flux of the coil and reduce the vibration of the magnetic shunt 3. At the same time, the process is simple and the manufacturing cost is saved.

[0055] It should be noted that, in the description of the present invention, terms such as "inside", "upper", "top", and "bottom" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0056] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic shunt fixing device for a transformer and a reactor, characterized in that: The invention comprises a web (1), a magnetic shunt (3), an iron yoke (5), and an iron core column (6); a reinforcing plate (2) is installed on the web (1); a magnetic shunt (3) is installed between the iron yoke (5) and the iron core column (6); a magnetic shunt fixing structure (4) is installed between the reinforcing plate (2) and the magnetic shunt (3); the magnetic shunt fixing structure (4) comprises a gasket and a bolt (45); an opening is provided on the reinforcing plate (2); the bolt (45) passes through the opening of the gasket and the reinforcing plate (2) and is installed on the clamping plate of the magnetic shunt (3).

2. A transformer and reactor magnetic shunt fixing device according to claim 1, characterized in that: The gasket comprises a first steel gasket (41), an insulating gasket (42), and a second steel gasket (43). The first steel gasket (41), the insulating gasket (42), and the second steel gasket (43) are installed in sequence from the clamping plate of the magnetic shunt (3) to the reinforcing plate (2).

3. A transformer and reactor magnetic shunt fixing device according to claim 2, characterized in that: The inner hole of the first steel washer (41) has the same outer diameter as the insulating washer (42), and the inner hole of the second steel washer (43) has the same outer diameter as the bolt (45).

4. A transformer and reactor magnetic shunt fixing device according to claim 2, characterized in that: The reinforcing plate (2) is provided with an inner hole, the insulating gasket (42) is provided with a protruding structure, and the protruding structure of the insulating gasket (42) is installed in the inner hole of the reinforcing plate (2).

5. A transformer and reactor magnetic shunt fixing device according to claim 1, characterized in that: The magnetic shunt fixing structure (4) comprises a spring which is installed between a washer and a bolt (45).

6. A transformer and reactor magnetic shunt fixing device according to claim 5, characterized in that: The spring is a butterfly spring (44), and the number of the butterfly springs (44) is two.

7. A transformer and reactor magnetic shunt fixing device according to claim 5, characterized in that: The washer, spring and bolt (45) are all blackened.

8. A transformer and reactor magnetic shunt fixing device according to claim 1, characterized in that: The performance grade of the bolt (45) is 8.8 or 12.

9.

9. A transformer and reactor magnetic shunt fixing device according to claim 1, characterized in that: The opening of the reinforcing plate (2) is a long hole.

10. A transformer and reactor magnetic shunt fixing device according to claim 1, characterized in that: A threaded hole is provided on the clamp of the magnetic shunt (3), and the position of the threaded hole is opposite to the position of the opening of the reinforcing plate (2).

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