Iron core limiting device

Abstract

The utility model discloses an iron core limiting device, which relates to the technical field of transformers and comprises a limiting piece, the limiting piece is arranged at the bottom of an iron core, the iron core comprises a plurality of iron core frames distributed along the circumferential direction, a retainer is arranged at the bottom of the iron core, and the iron core is hung on the retainer; the limiting piece is provided with at least one positioning surface located on any side of the bottom end of the iron core frame, and a gap is reserved between the positioning surface and the iron core frame, so that interference caused by direct contact between the limiting piece and the iron core frame during installation is avoided, the shaking amplitude of the iron core frame can be limited through the positioning surface, damage to the internal structure of the iron core is reduced, and the performance of the transformer is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an iron core limiting device. Background Art

[0002] In the field of power transmission, as the requirements for energy conservation and emission reduction continue to increase, amorphous three-dimensional wound core transformers are becoming more and more popular in the market. Since amorphous alloy transformer products have lower no-load losses, the core will generate a lot of noise during operation. In order to reduce the noise, the current mainstream measure is to install the core in a suspended manner. However, during the transportation of the transformer, the suspended core will shake, which can easily cause damage to the internal structure of the transformer. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an iron core limiting device to limit the shaking of the iron core and prevent the transformer from being damaged.

[0004] According to an embodiment of the present invention, there is provided an iron core limiting device installed in an iron core, comprising:

[0005] The limiting member is provided at the bottom of the iron core. The iron core includes several iron core frames distributed along the circumferential direction. A retaining frame is provided at the bottom of the iron core, and the iron core is suspended and installed on the retaining frame. The limiting member is provided with at least one positioning surface located on either side of the bottom end of the iron core frame, and a gap is left between the positioning surface and the iron core frame.

[0006] The iron core limiting device described in the present invention has at least the following beneficial effects: this embodiment provides a limiting member, which is located at the bottom of the iron core. The iron core includes a plurality of iron core frames distributed along the circumferential direction. A retaining frame is provided at the bottom of the iron core, and the iron core is suspended and installed on the retaining frame; the limiting member is provided with at least one positioning surface located on either side of the bottom end of the iron core frame, and a gap is left between the positioning surface and the iron core frame to avoid interference caused by direct contact between the limiting member and the iron core frame during installation, and the positioning surface can be used to limit the shaking amplitude of the iron core frame, thereby reducing damage to the internal structure of the iron core and avoiding affecting the performance of the transformer.

[0007] According to the core limiting device of the present invention, the positioning surface includes a first wall surface and a second wall surface which are oppositely arranged on the limiting member.

[0008] According to the core limiting device described in the utility model, the core frame is provided with an outer side surface and an inner side surface, the first wall surface is located on one side of the outer side surface, and the second wall surface is located on one side of the inner side surface.

[0009] According to the core limiting device described in the present invention, the limiting member is composed of a first positioning member and a second positioning member, the first wall surface is located on the first positioning member, the second wall surface is located on the second positioning member, and a gap is left between the first positioning member and the second positioning member.

[0010] According to the core limiting device described in the present invention, the outer side surface of the core frame is an arc surface, and the inner side surface is inclined to the horizontal plane. The first positioning member and the second positioning member are respectively stacked by pads of different widths to form the first wall surface and the second wall surface.

[0011] According to the core limiting device described in the utility model, the bottom of the retaining frame is provided with a mounting plate, and the limiting member is installed on the mounting plate.

[0012] According to the core limiting device described in the utility model, the mounting plate is provided with a connecting hole, and the first positioning member and the second positioning member are both provided with slots corresponding to the positions of the connecting holes, and the slots are used to pass bolts.

[0013] According to the core limiting device described in the utility model, a bottom surface covering the bottom end of the core frame is provided between the first wall surface and the second wall surface, and a gap is left between the bottom surface and the core frame.

[0014] According to the iron core limiting device described in the utility model, the iron core is further provided with an upper bracket, the upper bracket fixes the upper end of the iron core frame, and the upper bracket is fixedly connected to the retaining frame.

[0015] According to the core limiting device of the present invention, a connecting rod is provided between the upper bracket and the retaining frame, and both the upper bracket and the retaining frame are provided with a connecting portion for fixing the connecting rod. Additional aspects and advantages of the present invention will be described in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is an axonometric view of the core in the embodiment of the present utility model;

[0018] Figure 2 This is an axonometric view of a position limiting member in an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the positions of the limiting member and the core frame in an embodiment of the present utility model;

[0020] Figure 4 This is an axonometric view of the retaining frame in the embodiment of the present utility model.

[0021] Reference numerals:

[0022] Core 100; core frame 101; retainer 102; outer side 103; inner side 104; mounting plate 105; connecting hole 106; upper bracket 107; connecting rod 108; connecting portion 109;

[0023] The limiting member 110 , the first wall surface 111 , the second wall surface 112 , the bottom surface 113 , the first positioning member 114 , the second positioning member 115 , the pad 116 , the bottom plate 117 , and the slot 118 . DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figures 1 to 4An embodiment of the present invention provides an iron core limiting device, which is installed in the iron core 100 and includes a limiting member 110. The limiting member 110 is provided at the bottom of the iron core 100. The iron core 100 includes a plurality of iron core frames 101 distributed along the circumferential direction. A retaining frame 102 is provided at the bottom of the iron core 100. The iron core 100 is suspended and installed on the retaining frame 102. The retaining frame 102 is located at the bottom of the iron core 100. The limiting member 110 limits the end swing amplitude of the bottom of the iron core frame 101 to stabilize the iron core frame 101 during transportation and avoid damage to the transformer.

[0029] Reference Figure 2 The limiting member 110 is provided with at least one positioning surface located on either side of the bottom end of the core frame 101, and a gap is left between the positioning surface and the core frame 101. Furthermore, the positioning surface includes a first wall 111 and a second wall 112 arranged opposite to each other on the limiting member, the first wall 111 and the second wall 112 are covered on both sides of the bottom end of the core frame 101, and a bottom surface 113 covered on the bottom end of the core frame 101 is provided between the first wall 111 and the second wall 112. Gaps are left between the first wall 111, the second wall 112 and the bottom surface 113 and the core frame 101 to avoid interference caused by direct contact between the limiting member 110 and the core frame 101 during installation, and to limit the shaking amplitude of the core frame 101, thereby reducing damage to the internal structure of the core 100 and avoiding affecting the performance of the transformer.

[0030] Optionally, the core frame 101 has an outer side surface 103 and an inner side surface 104, the first wall surface 111 is located on one side of the outer side surface 103, and the second wall surface 112 is located on one side of the inner side surface 104. Furthermore, the outer side surface 103 of the core frame 101 is a curved surface, and the inner side surface 104 is inclined to a horizontal plane. The first wall surface 111 adapts to the curvature of the outer side surface 103, and the second wall surface 112 adapts to the inclination of the inner side surface 104.

[0031] Optionally, the limiting member 110 can be made by integral molding or composed of a first positioning member 114 and a second positioning member 115 that are separated from each other. The first wall 111 is located on the first positioning member 114, and the second wall 112 is located on the second positioning member 115. A gap is left between the first positioning member 114 and the second positioning member 115. The separated first positioning member 114 and the second positioning member 115 can be flexibly adapted to the actual installation position, thereby improving flexibility of use.

[0032] Optionally, the first positioning member 114 and the second positioning member 115 are both formed by stacking a plurality of pads 116, and the first positioning member 114 and the second positioning member 115 are respectively stacked by pads 116 of different widths to form the first wall 111 and the second wall 112. The pads 116 constituting the first wall 111 have different widths while making the curvature of the first wall 111 adapt to the curvature of the outer side 103, while the width of the pads 116 constituting the second wall 112 is uniformly progressive from top to bottom to adapt to the inclination of the inner side 104, and the stacked pads 116 can be replaced at any time to achieve adaptation to different core frames 101. Optionally, the first positioning member 114 and the second positioning member 115 are both provided with a bottom plate 117 constituting the bottom surface 113, and a plurality of bottom plates 117 are provided, and each bottom plate 117 has the same width to prevent the core frame 101 from contacting the bottom of the retaining frame 102 when shaking. Optionally, the limiting member 110 is made of insulating material, or can be made of soft plastic or rubber and other materials to provide a certain shock absorption capability.

[0033] Optionally, the bottom of the retaining frame 102 has a mounting plate 105, the limit member 110 is installed on the mounting plate 105, the mounting plate 105 is provided with a connecting hole 106, the connecting hole 106 has an internal thread, the first positioning member 114 and the second positioning member 115 are both provided with a slot 118 corresponding to the position of the connecting hole 106, the slot 118 is used to pass bolts, optionally, the slot 118 is respectively located at both ends of the first positioning member 114 and the second positioning member 115.

[0034] Optionally, the core 100 is further provided with an upper bracket 107, which fixes the upper end of the core frame 101 and is fixedly connected to the retaining frame 102. Optionally, a connecting rod 108 is provided between the upper bracket 107 and the retaining frame 102, and both the upper bracket 107 and the retaining frame 102 are provided with a connecting portion 109 for fixing the connecting rod 108. The connecting portion 109 protrudes radially outward from the upper bracket 107 and the retaining frame 102. The upper bracket 107 and the retaining frame 102 are fixed by the connecting rod 108, so that the core frame 101 and its windings are suspended and installed in the core 100.

[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A core limiting device, characterized in that: Installed in the core, including: A limiting member is provided at the bottom of the core, the core includes a plurality of core frames distributed along the circumferential direction, a retaining frame is provided at the bottom of the core, the core is suspended and mounted on the retaining frame, and the limiting member is provided with at least one positioning surface located on either side of the bottom end of the core frame, and a gap is left between the positioning surface and the core frame.

2. The core limiting device according to claim 1, characterized in that: The positioning surface includes a first wall surface and a second wall surface which are oppositely arranged on the limiting member.

3. The core limiting device according to claim 2, characterized in that: The core frame is provided with an outer side surface and an inner side surface, the first wall surface is located on one side of the outer side surface, and the second wall surface is located on one side of the inner side surface.

4. The core limiting device according to claim 3, characterized in that: The limiting member is composed of a first positioning member and a second positioning member. The first wall surface is located on the first positioning member, the second wall surface is located on the second positioning member, and a gap is left between the first positioning member and the second positioning member.

5. The core limiting device according to claim 4, characterized in that: The outer side surface of the core frame is an arc surface, and the inner side surface is inclined to a horizontal plane. The first positioning member and the second positioning member are respectively stacked by pads of different widths to form the first wall surface and the second wall surface.

6. The core limiting device according to claim 4, characterized in that: The bottom of the retaining frame is provided with a mounting plate, and the limiting member is mounted on the mounting plate.

7. The core limiting device according to claim 6, characterized in that: The mounting plate is provided with a connecting hole, and the first positioning member and the second positioning member are both provided with slotted holes corresponding to the positions of the connecting holes, and the slotted holes are used for passing bolts.

8. The core limiting device according to claim 2, characterized in that: A bottom surface covering the bottom end of the core frame is provided between the first wall surface and the second wall surface, and a gap is left between the bottom surface and the core frame.

9. The core limiting device according to claim 1, characterized in that: The iron core is further provided with an upper bracket, which fixes the upper end of the iron core frame and is fixedly connected to the retaining frame.

10. The core limiting device according to claim 9, characterized in that: A connecting rod is provided between the upper bracket and the retaining frame, and both the upper bracket and the retaining frame are provided with a connecting portion for fixing the connecting rod.

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