Insulation structure and electromagnetic device

Abstract

The utility model discloses an insulation structure and an electromagnetic device, and relates to the technical field of electromagnetic equipment, the electromagnetic device comprises a coil, the insulation structure comprises an iron yoke insulator, a plurality of first insulation cushion blocks and a plurality of second insulation cushion blocks, the iron yoke insulator is annular and is arranged corresponding to the coil, and the first insulation cushion blocks and the second insulation cushion blocks are arranged on the iron yoke insulator. The plurality of first insulating cushion blocks are circumferentially distributed at intervals on one side, deviating from the coil, of the iron yoke insulator, the plurality of second insulating cushion blocks are circumferentially distributed at intervals on one side, close to the coil, of the iron yoke insulator, and one second insulating cushion block is arranged corresponding to the plurality of first insulating cushion blocks. The technical scheme provided by the utility model aims to guarantee the insulation performance of the electromagnetic equipment by improving the assembly efficiency of the insulation cushion block.

Description

Technical Field

[0001] This application relates to the field of electromagnetic equipment technology, and in particular to an insulation structure and an electromagnetic device. Background Technology

[0002] During the production of electromagnetic equipment, insulating pads need to be placed on opposite sides of the iron yoke insulation. The insulating pads on both sides need to be placed one by one, which is cumbersome and time-consuming. This results in the coil being exposed to the air for too long after drying, which affects the insulation performance of the electromagnetic equipment. Utility Model Content

[0003] The main objective of this application is to propose an insulation structure and electromagnetic device that aims to ensure the insulation performance of electromagnetic equipment by improving the assembly efficiency of the insulation pad.

[0004] To achieve the above objectives, the insulating structure proposed in this application is applied to an electromagnetic device, the electromagnetic device including a coil, and the insulating structure includes:

[0005] The yoke is insulated, ring-shaped, and positioned corresponding to the coil;

[0006] Multiple first insulating pads are spaced apart and circumferentially distributed on the side of the yoke insulation opposite to the coil; and

[0007] Multiple second insulating pads are distributed circumferentially at intervals on the side of the yoke insulation closest to the coil, with one second insulating pad corresponding to multiple first insulating pads.

[0008] In one embodiment, the second insulating pad is in a partially annular shape.

[0009] In one embodiment, the ring width of the second insulating pad is smaller than the ring width of the yoke insulation, and the outer ring edge of the second insulating pad is disposed close to the outer ring edge of the yoke insulation.

[0010] In one embodiment, the outer ring edge of the second insulating pad and the outer ring edge of the yoke insulation are conformally arranged.

[0011] In one embodiment, the inner ring edge of the second insulating pad and the inner ring edge of the yoke insulation are conformally arranged.

[0012] In one embodiment, each end of the second insulating pad is provided with a first insulating pad, and the side of the first insulating pad is provided with the side of the second insulating pad.

[0013] In one embodiment, the yoke insulation is in the shape of an elliptical ring or a near-elliptical ring, and a second insulating pad is distributed on each side of the short axis of the yoke insulation.

[0014] In an embodiment, two ends of two second insulation pads distributed along the short axis direction of the yoke insulation are respectively close to two sides of the yoke insulation in the long axis direction.

[0015] In an embodiment, the yoke insulation comprises two first circular arc segments arranged oppositely in the long axis direction and two second circular arc segments arranged oppositely in the short axis direction, the two first circular arc segments and the two second circular arc segments are alternately connected in the circumferential direction, the curvature of the first circular arc segment is greater than the curvature of the second circular arc segment, and two ends of two second insulation pads distributed along the short axis direction of the yoke insulation are respectively arranged corresponding to two first circular arc segments.

[0016] The application also provides an electromagnetic device comprising the insulation structure.

[0017] In an embodiment, the electromagnetic device is configured as a transformer.

[0018] In the technical solution of the application, the extension length of the second insulation pad in the circumferential direction of the yoke insulation is greater than the extension length of the first insulation pad in the circumferential direction of the yoke insulation, the second insulation pad can be arranged corresponding to multiple first insulation pads, so that the placement positions of the first insulation pad and the second insulation pad are relatively flexible, the operation requirements for placing the insulation pads are reduced, meanwhile, the number of second insulation pads needed to be placed between the yoke insulation and the coil can be reduced, thereby improving the operation convenience of the process, reducing the time spent in the process, being beneficial to improving the production and assembly efficiency of the electromagnetic device, and reducing the exposure time of the coil in the air after drying, so as to ensure the insulation performance of the electromagnetic device. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0020] Figure 1 The structure schematic diagram of an embodiment of the insulation structure provided by the application in the assembly of the electromagnetic device;

[0021] Figure 2 The structure schematic diagram of an embodiment of the insulation structure provided by the application in the assembly of the electromagnetic device;

[0022] Figure 3 The structure schematic diagram of an embodiment of the insulation structure provided by the application in the assembly of the electromagnetic device;

[0023] Figure 4 Fig. 2 is a structural schematic diagram of one side of an embodiment of the insulation structure provided in the present application (not including the perspective structure of the first insulation pad on the opposite side).

[0024] Brief Description of the Drawings:

[0025] 100, iron yoke insulation; 200, first insulation pad; 300, second insulation pad.

[0026] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0029] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, “and / or” or “and / or” appearing throughout the text means that the three parallel schemes are included, for example, “A and / or B” includes A scheme, or B scheme, or A and B are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection claimed by the present application.

[0030] The present application provides an insulation structure.

[0031] Please refer to Figures 1 to 4 In an embodiment of the present application, the insulation structure is applied to an electromagnetic device, the electromagnetic device includes a coil, and the insulation structure includes:

[0032] The iron yoke insulation 100 is annular and corresponds to the coil;

[0033] A plurality of first insulation pads 200 are distributed in a circumferential direction on a side of the iron yoke insulation 100 away from the coil; and

[0034] A plurality of second insulation pads 300 are distributed in a circumferential direction on a side of the iron yoke insulation 100 close to the coil, and one second insulation pad 300 corresponds to a plurality of first insulation pads 200.

[0035] It should be noted that, Figure 2 The structure of the side of the second insulation pad 300 of the insulation structure of one embodiment of the present application is shown in the schematic view, and the structure of the quadrilateral in the dashed line is the perspective structure of the first insulation pad 200 on the opposite side. The figure can more intuitively illustrate the relative position relationship between the iron yoke insulation 100, the plurality of first insulation pads 200, and the plurality of second insulation pads 300.

[0036] It can be understood that in the electromagnetic device, the first insulation pad 200 is between the iron core and the clamp, which ensures the electrical isolation between the iron core and the clamp, and the second insulation pad 300 is between the iron core and the coil, which helps to adjust the gap between the iron core and the coil, ensures that the two maintain a proper distance, prevents direct contact between the coil and the iron core, avoids short circuit or other electrical faults, at the same time, the second insulation pad 300 can provide additional support for the coil, help to maintain the position of the coil unchanged, especially when the transformer is affected by external vibration or electromagnetic force, which helps to reduce the mechanical stress caused by displacement, protects the coil from damage.

[0037] In the production and assembly process of the electromagnetic device, after the coil is treated with paint immersion and dried and cured, the iron core needs to be installed in the coil, and the second insulation pad 300 needs to be placed between the iron yoke insulation 100 and the coil. In the related art, the first insulation pad 200 and the second insulation pad 300 are arranged one by one, which results in too many second insulation pads 300 to be placed, and the operation is relatively complicated and time-consuming, which causes the coil to be exposed to air for a long time, affects the insulation performance of the coil, and is easy to be not placed completely, resulting in uneven gap between the coil and the iron core, which may cause rework.

[0038] In the technical solution of the present application, the extension length of the second insulating pad 300 in the circumferential direction of the iron yoke insulation 100 is greater than the extension length of the first insulating pad 200 in the circumferential direction of the iron yoke insulation 100. The second insulating pad 300 can be arranged corresponding to a plurality of first insulating pads 200, so that the placement positions of the first insulating pad 200 and the second insulating pad 300 are relatively flexible, which reduces the operation requirements for placing the insulating pad, and at the same time, the number of second insulating pads 300 needed to be placed between the iron yoke insulation 100 and the coil can be reduced, thereby improving the operation convenience of the process, reducing the time spent in the process, and being beneficial to improving the production and assembly efficiency of the electromagnetic equipment, and can reduce the exposure time of the coil in the air after drying, so as to ensure the insulation performance of the electromagnetic equipment.

[0039] In an embodiment, referring to Figures 2 to 4 , the second insulating pad 300 is in the form of an incomplete ring. That is, the side edge of the second insulating pad 300 close to the inner ring edge of the iron yoke insulation 100 is in the form of an arc, and the side edge of the second insulating pad 300 close to the inner ring edge of the iron yoke insulation 100 is also in the form of an arc. In this way, the shape adaptability of the second insulating pad 300 and the iron yoke insulation 100 can be improved, which is beneficial to ensuring that the second insulating pad 300 provides uniform support force between the iron core and the coil, so as to ensure that the iron core and the coil maintain appropriate spacing. Of course, in other embodiments, the two side edges of the second insulating pad 300 relative to the inner ring edge and the outer ring edge of the iron yoke insulation 100 can also be in the form of multiple segments.

[0040] In an embodiment, referring to Figures 2 to 4 , the ring width of the second insulating pad 300 is less than the ring width of the iron yoke insulation 100, and the outer ring edge of the second insulating pad 300 is arranged close to the outer ring edge of the iron yoke insulation 100. In this way, the relative positions of the second insulating pad 300 and the coil can be facilitated, especially when the second insulating pad 300 only needs to be arranged corresponding to the high-voltage coil. Specifically, the outer ring edge of the second insulating pad 300 can be arranged coincidentally with the outer ring edge of the iron yoke insulation 100. After the final assembly is completed, the iron yoke insulation 100, the second insulating pad 300 and the coil can be flush in the outer periphery, which is convenient for the assembly of other components subsequently. Of course, in other embodiments, the ring width of the second insulating pad 300 can also be equal to the ring width of the iron yoke insulation 100.

[0041] In an embodiment, referring to Figures 2 to 4, the outer ring edge of the second insulation pad 300 is arranged in the same shape as the outer ring edge of the iron yoke insulation 100. That is, the outer ring edge of the second insulation pad 300 extends according to the curvature of the outer ring edge of the iron yoke insulation 100, so that the outer ring edge of the second insulation pad 300 can coincide or be parallel (parallel or approximately parallel) with the outer ring edge of the iron yoke insulation 100, so that the shape adaptability of the second insulation pad 300 and the iron yoke insulation 100 on the outer circumferential side can be improved, which is beneficial to ensure that the second insulation pad 300 provides uniform support force between the iron core and the coil.

[0042] In an embodiment, referring to Figures 2 to 4 , the inner ring edge of the second insulation pad 300 is arranged in the same shape as the inner ring edge of the iron yoke insulation 100. That is, the inner ring edge of the second insulation pad 300 extends according to the curvature of the inner ring edge of the iron yoke insulation 100, so that the inner ring edge of the second insulation pad 300 can coincide or be parallel (parallel or approximately parallel) with the inner ring edge of the iron yoke insulation 100, so that the shape adaptability of the second insulation pad 300 and the iron yoke insulation 100 on the inner circumferential side can be improved, which is beneficial to ensure that the second insulation pad 300 provides uniform support force between the iron core and the coil.

[0043] In an embodiment, referring to Figures 2 to 4 , each of the two ends of the second insulation pad 300 corresponds to one of the first insulation pads 200, and the side of the first insulation pad 200 corresponds to the side of the second insulation pad 300. In this way, both ends of the second insulation pad 300 can be equivalent to being overlapped on the position of the first insulation pad 200, which is beneficial to improve the stress uniformity of the second insulation pad 300, thereby ensuring the supporting effect of the second insulation pad 300. Of course, in other embodiments, the end of the second insulation pad 300 can not be provided with the first insulation pad 200, provided that the supporting property of the second insulation pad 300 is sufficient.

[0044] In an embodiment, referring to Figures 2 to 4 , the iron yoke insulation 100 is in the shape of an oval ring or an oval ring-like shape, and each of the two sides in the short axis direction of the iron yoke insulation 100 is distributed with one of the second insulation pads 300. It can be understood that the coil will also correspondingly be in the shape of an oval ring or an oval ring-like shape, and the two sides of the iron yoke insulation 100 and the coil distributed in the short axis direction will extend in the long axis direction, and the extension length is relatively large. The two sides are both provided with the second insulation pad 300, which can ensure that the second insulation pad 300 provides sufficient support force, thereby ensuring the stability of the relative position between the iron core and the coil. Of course, in other embodiments, the iron yoke insulation 100 and the coil can also correspondingly be in the shape of a circle or a circle-like shape.

[0045] In an embodiment, referring to Figures 2 to 4The two ends of the two second insulating blocks 300 distributed along the short axis direction of the iron yoke insulation 100 are respectively close to the two sides of the iron yoke insulation 100 in the long axis direction. In the embodiment, the two second insulating blocks 300 distributed along the short axis direction of the iron yoke insulation 100 can substantially cover the circumferential area of the iron yoke insulation 100, and no other second insulating blocks 300 can be arranged, thereby further reducing the number of second insulating blocks 300 and further reducing the time required for installing the second insulating blocks 300. Of course, in other embodiments, two second insulating blocks 300 can be additionally distributed in the long axis direction of the iron yoke insulation 100.

[0046] In an embodiment, referring to Figures 2 to 4 The iron yoke insulation 100 includes two first circular arc segments (i.e., a circular arc with end points R1 and R2 and a circular arc with end points R3 and R4, respectively denoted as R1R2 and R3R4) arranged opposite in the long axis direction and two second circular arc segments (i.e., a circular arc with end points R1 and R4 and a circular arc with end points R2 and R3, respectively denoted as R1R4 and R2R3) arranged opposite in the short axis direction. The two first circular arc segments R1R2 and R3R4 and the two second circular arc segments R2R3 and R1R4 are alternately connected in the circumferential direction, i.e., R1R2, R2R3, R3R4, and R1R4 are sequentially connected. The curvature of the first circular arc segments R1R2 / R3R4 is greater than the curvature of the second circular arc segments R1R4 / R2R3. The two ends of the two second insulating blocks 300 distributed along the short axis direction of the iron yoke insulation 100 are respectively arranged corresponding to the two first circular arc segments R1R2 and R3R4.

[0047] Taking the first circular arc segment R1R2 and the second circular arc segment R2R3 as an example, it can be understood that the radius O1R1 of the first circular arc segment R1R2 is less than the radius O2R2 of the second circular arc segment R2R3, so that the curvature of the first circular arc segment R1R2 is greater than the curvature of the second circular arc segment R2R3, and the first circular arc segment R3R4 and the second circular arc segment R1R4 are the same. The two ends of each first circular arc segment R1R2 / R3R4 are respectively connected to the two second circular arc segments R2R3 and R1R4. The two ends of each second circular arc segment R1R4 / R2R3 are respectively connected to the two first circular arc segments R1R2 and R3R4. The four connection points are smoothly connected, thereby forming an elliptical ring-shaped iron yoke insulation 100.

[0048] The two second insulation pads 300 are distributed along the short axis direction, that is, the second insulation pad 300 is mainly arranged corresponding to the second circular arc segments R2R3 and R1R4, and on this basis, the two ends of the second insulation pad 300 extend to the positions corresponding to the two first circular arc segments R1R2 and R3R4, so that the second insulation pad 300 can cover most of the circumferential region of the iron yoke insulation 100, so that the second insulation pad 300 can be reliably supported in the circumferential direction.

[0049] Please refer to ​ Taking the first circular arc segment R1R2 and the second circular arc segment R2R3 as an example, the center of the first circular arc segment R1R2 is O1, and the center of the second circular arc segment R2R3 is O2. Without loss of generality, the plurality of first insulation pads 200 distributed in the first circular arc segment R1R2 are uniformly distributed in the circumferential direction around O1, and the plurality of first insulation pads 200 distributed in the second circular arc segment R2R3 are uniformly distributed in the circumferential direction around O2. The part of the second insulation pad 300 corresponding to the first circular arc segment R1R2 is configured as an arc segment with O1 as the center, and the part of the second insulation pad 300 corresponding to the second circular arc segment R2R3 is configured as an arc segment with O2 as the center. The first insulation pad 200 and the second insulation pad 300 corresponding to the first circular arc segment R3R4 and the second circular arc segment R1R4 are the same. In this way, the structural consistency of the insulation structure in the circumferential direction can be improved, which is beneficial to ensuring the stress uniformity of the insulation structure in the circumferential direction, thereby ensuring the structural stability of the insulation structure.

[0050] The application also provides an electromagnetic device, which comprises the insulation structure. The specific structure of the insulation structure is referred to the above-mentioned embodiments. Since the electromagnetic device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. The electromagnetic device can be a transformer, an electric reactor, an electric machine, a choke coil, a magnetic amplifier, etc.

[0051] The above-mentioned is only an exemplary embodiment of the application, and does not limit the patent scope of the application. Any equivalent structural transformation made by referring to the content of the specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. An insulating structure, characterized in that, Applied to electromagnetic devices, the electromagnetic devices including coils, the insulating structure including: The yoke insulation (100) is ring-shaped and is arranged corresponding to the coil; A plurality of first insulating pads (200) are spaced apart and circumferentially distributed on the side of the yoke insulation (100) opposite to the coil; and Multiple second insulating pads (300) are distributed circumferentially at intervals on the side of the yoke insulation (100) near the coil, with one second insulating pad (300) corresponding to multiple first insulating pads (200).

2. The insulation structure as described in claim 1, characterized in that, The second insulating pad (300) is incompletely annular.

3. The insulation structure as described in claim 2, characterized in that, The ring width of the second insulating pad (300) is smaller than the ring width of the iron yoke insulation (100), and the outer ring edge of the second insulating pad (300) is disposed close to the outer ring edge of the iron yoke insulation (100).

4. The insulation structure as described in claim 2, characterized in that, The outer ring edge of the second insulating pad (300) and the outer ring edge of the iron yoke insulation (100) are conformally arranged; And / or, the inner ring edge of the second insulating pad (300) and the inner ring edge of the yoke insulation (100) are conformally arranged.

5. The insulation structure as described in claim 1, characterized in that, The second insulating pad (300) is provided at both ends corresponding to the first insulating pad (200), and the side of the first insulating pad (200) is provided corresponding to the side of the second insulating pad (300).

6. The insulating structure according to any one of claims 1 to 5, characterized in that, The iron yoke insulation (100) is in the shape of an elliptical ring or a near-elliptical ring, and a second insulating pad (300) is distributed on each side of the iron yoke insulation (100) in the direction of its short axis.

7. The insulation structure as described in claim 6, characterized in that, The two ends of the two second insulating pads (300) distributed along the short axis of the yoke insulation (100) are respectively close to the two sides along the long axis of the yoke insulation (100).

8. The insulation structure as described in claim 7, characterized in that, The yoke insulation (100) includes two first arc segments (R1R2, R3R4) arranged opposite each other in the long axis direction and two second arc segments (R1R4, R2R3) arranged opposite each other in the short axis direction. The two first arc segments (R1R2, R3R4) and the two second arc segments (R1R4, R2R3) are alternately connected in the circumferential direction. The curvature of the first arc segments (R1R2, R3R4) is greater than the curvature of the second arc segments (R1R4, R2R3). The two ends of the two second insulating pads (300) distributed along the short axis direction of the yoke insulation (100) are respectively provided corresponding to the two first arc segments (R1R2, R3R4).

9. An electromagnetic device, characterized in that, Including the insulating structure of any one of claims 1 to 8.

10. The electromagnetic device as described in claim 9, characterized in that, The electromagnetic device is configured as a transformer.

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