Assembly for compressing main body part in transformer and transformer

Abstract

The utility model provides an assembly for compressing a main body part in a transformer and the transformer. The transformer includes a main body portion and an upper frame, the assembly including a linear actuator that is retractable, in a shortened state, the linear actuator is adapted to be placed between the main body portion and the upper frame, in an extended state, a first end of the linear actuator abuts against the upper frame, a second end of the linear actuator abuts against the main body portion, and a third end of the linear actuator abuts against the upper frame. Applying a predetermined amount of pressure to the main body portion; and an insulating block configured to be insertable between the main body portion and the upper frame in an extended state of the linear actuator, and to be able to be sandwiched between the main body portion and the upper frame and apply a predetermined amount of pressure to the main body portion after the insulating block is in place and the linear actuator is shortened and moved out. According to the utility model, the main body part is pressed by the insulating block body, so that the risk that a lead and an iron component are not enough for a safe distance due to pressing by the iron component is avoided, and the safety of the transformer is improved.

Description

Technical Field

[0001] The utility model relates to electrical equipment, specifically, to a component and a transformer for pressing a main body part in a transformer. Background Art

[0002] In a conventional transformer, the component for pressing the main body part usually includes a threaded rod and a nut welded on an upper frame, and the main body part of the engine is pressed by tightening the threaded rod. However, both the threaded rod and the nut are iron components, and the leads of the transformer windings need to maintain a sufficient safety distance from these components, which requires more installation space.

[0003] In the prior art, if the leads of the transformer windings do not maintain a sufficient safety distance from these iron components, it may cause the transformer to fail in the factory test performance, because if there is no sufficient safety insulation distance, in some cases, such as during thunderstorm weather, there is a risk of electrical short circuit. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a component and a transformer for pressing a main body part in a transformer to avoid using iron components to press the main body part of the engine. The component of the utility model uses an insulating material to press the main body part of the engine, avoiding the risk that the leads of the main body part of the transformer in the prior art do not maintain a sufficient safety distance from the iron components.

[0005] According to one aspect of the present utility model, there is provided a component for pressing a main body portion in a transformer. The transformer includes a main body portion and an upper frame. The main body portion includes an iron core, windings, and a pressing plate covering the iron core and the windings. The upper frame is assembled above the main body portion. In particular, the component for pressing the main body portion includes: a linear actuator, which is telescopic. In the shortened state of the linear actuator, the linear actuator is adapted to be placed between the pressing plate of the main body portion and the upper frame. And in the extended state of the linear actuator, the first end of the linear actuator abuts against the upper frame, and the second end of the linear actuator opposite to the first end abuts against the pressing plate of the main body portion to apply a predetermined amount of pressure to the pressing plate of the main body portion; and an insulating block configured to be inserted between the pressing plate of the main body portion and the upper frame in the extended state of the linear actuator. And after the insulating block is in place and the linear actuator is shortened and removed, the insulating block can be clamped between the pressing plate of the main body portion and the upper frame and apply a predetermined amount of pressure to the main body portion. Accordingly, by using the insulating block to press the main body portion, the risk that there is not enough safety distance between the lead wire and the iron member caused by pressing the main body portion with an iron member is avoided, and the qualified rate of the transformer is improved; at the same time, by using the linear actuator, the quick and proper installation of the insulating block can be realized to ensure a predetermined amount of pressure, and the installation efficiency and installation accuracy are improved.

[0006] Further, the insulating block includes an electrical laminated wood block. Accordingly, by using the relatively high mechanical strength and good insulation performance of the electrical laminated wood block, the stability when the main body portion is pressed can be ensured, and the risk of faults such as short circuits during the operation of the transformer can be reduced. At the same time, the electrical laminated wood block has relatively strong plasticity and can be processed into insulating blocks of different shapes according to needs to adapt to different installation environments and requirements. In addition, the electrical laminated wood block also has good aging resistance and corrosion resistance, which can improve the service life and reliability of the insulating block.

[0007] Further, the linear actuator includes a pneumatic cylinder or a hydraulic cylinder. Accordingly, by using the pneumatic cylinder or the hydraulic cylinder as the linear actuator, the stability and reliability of the linear motion can be improved. The driving force of the pneumatic cylinder or the hydraulic cylinder can be adjusted according to needs to adapt to different pressing requirements. This design improves the installation efficiency and installation accuracy of the insulating block.

[0008] Further, the insulating block includes a first block and a second block stacked above or below the first block. Among them, the thickness of the first block is constant, and the second block can be selected from a plurality of alternative sheet components according to the size of the space between the pressing plate of the main body part and the upper frame, so that the thickness of the second block can be adjusted. Accordingly, it is convenient for the operator to operate, and the quick and proper installation of the insulating block can be achieved.

[0009] Further, the thickness of the first block accounts for more than half of the total thickness of the insulating block. Among them, the first block includes a support seat, and the support seat is configured to receive the corresponding part of the upper frame. The support seat includes a first wall and a second wall opposite to each other and a groove defined between the first wall and the second wall. Accordingly, by increasing the thickness of the first block to more than half of the total thickness of the insulating block, the installation efficiency of the insulating block is improved, and at the same time, the strength and stability of the insulating block are improved. In addition, the structure of the support seat can effectively support the upper frame, make the overall structure more firm, reduce vibration and noise, and improve the safety and reliability of the transformer operation.

[0010] Further, the second block includes two or more sheet components stacked together. Accordingly, the stacked sheet components can provide more flexibility to meet the requirements of different sizes of the space between the main body part and the upper frame.

[0011] Further, the number of the linear drivers is two, and a space suitable for arranging the insulating block is formed between the two linear drivers. Accordingly, by arranging two linear drivers, the layout is optimized and the installation is convenient. At the same time, the two linear drivers work together to ensure sufficient driving force to apply a predetermined amount of pressure to the main body part.

[0012] According to another aspect of the present invention, a transformer is provided. The transformer includes a main body part and an upper frame. The main body part includes an iron core, a winding, and a pressing plate covering the iron core and the winding. The upper frame is assembled above the main body part. In particular, the transformer includes a component for pressing the main body part in the transformer according to any one of the above.

[0013] Further, the transformer includes three main body parts, and four components for pressing the main body part are arranged for each main body part. Accordingly, the effective pressing of each main body part can be achieved by using the insulating blocks of the four components respectively, avoiding the risk that the lead of the winding of the transformer and the iron component do not have enough safety distance when the main body part is pressed by the iron component, and improving the qualified rate of the transformer.

[0014] Further, the main body part is cylindrical, and the four components for pressing the main body part are respectively arranged in four quadrants around the center on the circular upper surface of the main body part. Accordingly, the four components are reasonably arranged to effectively press the main body part, making the pressing force more uniform and improving the qualified rate of the transformer.

[0015] In summary, through the component and the transformer for pressing the main body part in the transformer of the present utility model, the main body part is pressed by the insulating block body, avoiding the risk that there is not enough safety distance between the lead wire and the iron component caused by pressing the main body part with the iron component, and improving the qualified rate of the transformer; at the same time, the linear driver can be used to realize the rapid and proper installation of the insulating block body to ensure a predetermined amount of pressure, improving the installation efficiency and installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following will make the above and other features and advantages of the present utility model clearer to those of ordinary skill in the art by referring to the drawings in detail. In the drawings:

[0017] Figure 1 FIG. 1 is a schematic perspective view showing a part of a transformer according to an exemplary embodiment of the present utility model, in which the component for pressing the main body part in the transformer is shown.

[0018] Figure 2 FIG. 2 is a schematic perspective view showing a part of a transformer according to an exemplary embodiment of the present utility model, in which the component for pressing the main body part in the transformer is shown.

[0019] Figure 3 FIG. 3 is a schematic front view showing a part of a transformer according to an exemplary embodiment of the present utility model, in which the component for pressing the main body part in the transformer is shown.

[0020] Figure 4 FIG. 4 is a schematic perspective view of the insulating block body of the component for pressing the main body part in the transformer according to an exemplary embodiment of the present utility model.

[0021] Among them, the reference numerals are as follows:

[0022] 10. Main body part

[0023] 11. Plate component

[0024] 12. Pressing plate

[0025] 13. Winding

[0026] 20. Upper frame

[0027] 30. Insulating block body

[0028] 31. First block

[0029] 310. Support base

[0030] 311. First section

[0031] 312. Second section

[0032] 313. Groove

[0033] 314. First wall

[0034] 315. Second wall

[0035] 32. Second block

[0036] 40. Linear actuator

[0037] 41. First end

[0038] 42. Second end

[0039] 43. Piston rod

[0040] 44. Cylinder body part

[0041] 45. Base part

[0042] 50. Lead wire Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the present utility model clearer, the following examples are given to further elaborate on the present utility model in detail. Apparently, the described examples are only a part of the embodiments of the present utility model, rather than all of them. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present utility model or its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model. In this patent application, nouns and pronouns related to people are not limited to a specific gender.

[0044] It should be noted that the terms used here are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form.

[0045] First, please refer to Figure 1, showing a schematic stereoscopic view of a portion of a transformer according to an exemplary embodiment of the utility model. The transformer includes a main body 10 and an upper frame 20. The main body 10 may also be referred to as a "body" in the art. The main body 10 mainly includes an iron core and a winding 13 and a pressure plate 12 covering the iron core and the winding 13. The pressure plate 12 is used to press the iron core and the winding 13. The upper frame 20 is assembled on the top of the main body 10. Specifically, the upper frame 20 is assembled on the top of the pressure plate 12 of the main body 10. Of course, it can be understood that the transformer also includes some other components, such as Figure 3 The lead wire 50 shown in FIG. Figure 2 The plate component 11 in the figure can also be regarded as a component of the pressing plate 12 of the main body 10. In order to avoid confusion, only the transformer components related to the present invention are described in detail.

[0046] Reference Figure 1 , the components used to compress the main body part in the transformer mainly include a linear drive 40 and an insulating block 30.

[0047] Reference Figure 2 and Figure 3 The linear drive 40 is retractable. In the shortened state of the linear drive 40, the linear drive 40 is suitable for being placed between the main body 10 and the upper frame 20, and in the extended state of the linear drive 40, the first end 41 of the linear drive 40 abuts against the upper frame 20, and the second end 42 of the linear drive 40 opposite to the first end 41 abuts against the pressure plate 12 of the main body 10, and applies a predetermined amount of pressure to the main body 10. The insulating block 30 is configured to be inserted between the main body 10 and the upper frame 20 in the extended state of the linear drive 40, and after the insulating block 30 is in place and the linear drive 40 is shortened and moved out, the insulating block 30 can be clamped between the pressure plate 12 of the main body 10 and the upper frame 20, and apply a predetermined amount of pressure to the main body 10. The insulating block 30 applies a predetermined amount of pressure to the main body 10, thereby ensuring the stability of the position of the winding and the core when the transformer is working.

[0048] According to a preferred embodiment of the utility model, the insulating block 30 includes an electrical laminated wood block. The electrical laminated wood block has high mechanical strength and good insulation performance, which can ensure the stability of the main body 10 when it is compressed, and reduce the risk of short circuit and other faults during transformer operation. At the same time, the electrical laminated wood block has strong plasticity and can be processed into insulating blocks 30 of different shapes as needed to adapt to different installation environments and requirements. In addition, the electrical laminated wood block also has good aging resistance and corrosion resistance, which can improve the service life and reliability of the insulating block.

[0049] The linear actuator 40 can be implemented as a pneumatic cylinder or a hydraulic cylinder. Referring to Figure 2 , for each component used to press the main body part, the number of linear actuators 40 can be two, and a space suitable for arranging the insulating block 30 is formed between the two linear actuators 40. In Figure 2 's implementation, the linear actuator 40 is a hydraulic cylinder, and the hydraulic cylinder mainly includes a base part 45, a cylinder body part 44, and a piston rod 43. The base part 45 can be a hexahedral block. In the extended state of the hydraulic cylinder, the end of the piston rod 43, as the first end 41, abuts against the corresponding area of the bottom surface of the upper frame 20, and the bottom surface of the base part 45, as the second end 42, abuts against the corresponding area of the top surface of the pressing plate 12 of the main body part 10. After pressing the main body part 10 of the transformer with a certain pressing force by the hydraulic cylinder, the hydraulic cylinder can be removed, and the main body part 10 can be clamped by the adjustable insulating block 30.

[0050] Referring to Figure 3 and Figure 4 , the insulating block 30 is an electrical laminated wood block, and the insulating block 30 includes a first block 31 and a second block 32 stacked below the first block 31. It can be understood that the relative positions of the first block 31 and the second block 32 can be interchanged. The thickness of the first block 31 is constant, and this thickness refers to the dimension measured in the vertical direction. The thickness of the first block 31 can be, for example, in the range of 100 mm to 200 mm. The second block 32 can be selected from a plurality of alternative sheet components according to the size of the space between the main body part 10 and the upper frame 20, so that the thickness of the second block 32 is adjustable. As Figure 2 shown, the first block 31 can include a first section 311 and a second section 312. From Figure 4 it can be seen that the second section 312 can have a constant cross-section intercepted in the horizontal direction, and this cross-section is in a rectangular shape, while the first section 311 can be tapered in a direction away from the second section 312, and the thickness of the second section 312 can be greater than the thickness of the first section 311.

[0051] The thickness of the first block 31 accounts for more than half of the total thickness of the insulating block 30. Among them, the first block 31 includes a support seat 310 arranged at the upper end of the first section 311. The support seat 310 is configured to receive the corresponding part of the upper frame 20. The support seat 310 includes a first wall 314 and a second wall 315 opposite to each other and a groove 313 defined between the first wall 314 and the second wall 315. The second block 32 can be a single sheet component or can include two or more sheet components stacked together. For example, the thicknesses of the plurality of sheet components can be the same or different, and the operator can increase or decrease the number of sheet components according to the size of the space between the main body part 10 and the upper frame 20.

[0052] The present utility model also provides a transformer, which includes a main body part 10 and an upper frame 20. The main body part 10 includes a iron core, a winding 13, and components such as a pressing plate 12 covering the iron core and the winding 13. The upper frame 20 is assembled above the main body part 10. The transformer further includes a component for pressing the main body part. It can be understood that after the linear actuator 40 is shortened and removed, the finally manufactured transformer only includes an insulating block, and a predetermined amount of pressure is applied to the main body part 10 through the insulating block 30.

[0053] Referring to Figure 1 , the transformer is a three-phase transformer, correspondingly including three main body parts 10, each main body part 10 corresponding to one phase, and four components are arranged for each main body part 10. The main body part 10 is generally in a cylindrical shape, and the four components are respectively arranged in four quadrants around the center on the circular upper surface of the main body part 10.

[0054] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A component for pressing a main body in a transformer, the transformer comprising a main body (10) and an upper frame (20), the main body (10) comprising an iron core and a winding (13) and a pressing plate (12) covering the iron core and the winding (13), the upper frame (20) being mounted above the main body (10), characterized in that: The assembly for compressing the main body portion comprises: a linear drive (40), wherein the linear drive (40) is retractable, and in a shortened state of the linear drive (40), the linear drive (40) is adapted to be placed between the pressure plate (12) of the main body (10) and the upper frame (20), and in an extended state of the linear drive (40), a first end (41) of the linear drive (40) abuts against the upper frame (20), and a second end (42) of the linear drive (40) opposite to the first end (41) abuts against the pressure plate (12) of the main body (10) to apply a predetermined amount of pressure to the pressure plate (12) of the main body (10); and The insulating block (30) is configured to be inserted between the pressure plate (12) of the main part (10) and the upper frame (20) when the linear drive (40) is in an extended state, and after the insulating block (30) is in place and the linear drive (40) is shortened and moved out, the insulating block (30) can be clamped between the pressure plate (12) of the main part (10) and the upper frame (20) and apply a predetermined amount of pressure to the main part (10).

2. The assembly for compressing the main body in a transformer according to claim 1, characterized in that: The insulating block (30) comprises an electrical laminated wood block.

3. The assembly for compressing the main body in a transformer according to claim 1, characterized in that: The linear drive (40) comprises a pneumatic cylinder or a hydraulic cylinder.

4. The assembly for compressing the main body in a transformer according to claim 1, characterized in that: The insulating block (30) includes a first block (31) and a second block (32) stacked above or below the first block (31), wherein the thickness of the first block (31) is constant, and the second block (32) can be selected from a plurality of selectable sheet material parts according to the size of the space between the pressure plate (12) of the main part (10) and the upper frame (20), so that the thickness of the second block (32) is adjustable.

5. The assembly for compressing the main body in a transformer according to claim 4, characterized in that: The thickness of the first block (31) accounts for more than half of the total thickness of the insulating block (30). Wherein, the first block (31) includes a support seat (310), the support seat (310) is configured to receive a corresponding part of the upper frame (20), and the support seat (310) includes a first wall (314) and a second wall (315) opposite to each other and a groove (313) defined between the first wall (314) and the second wall (315).

6. The assembly for compressing the main body in a transformer according to claim 4, characterized in that: The second block (32) comprises two or more sheet material components stacked together.

7. The assembly for compressing a main body portion in a transformer according to claim 1, characterized in that: The number of the linear drives (40) is two, and a space suitable for arranging the insulating block (30) is formed between the two linear drives (40).

8. A transformer, comprising a main body (10) and an upper frame (20), wherein the main body (10) comprises an iron core and a winding (13) and a pressing plate (12) covering the iron core and the winding (13), and the upper frame (20) is mounted above the main body (10), characterized in that: The transformer comprises an assembly for compressing a main body portion in a transformer according to any one of claims 1 to 7.

9. The transformer according to claim 8, characterized in that: The transformer comprises three main body parts (10), and four components for pressing the main body parts are arranged for each main body part (10).

10. The transformer according to claim 9, characterized in that: The main body part (10) is cylindrical, and the four components for compacting the main body part are respectively arranged in four quadrants around the center on the circular upper surface of the main body part (10).

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