Drawing tool for high-voltage coil inner mold of dry-type transformer

Abstract

The utility model discloses a dry-type transformer high-voltage coil inner mold drawing tool in the technical field of high-voltage coils, which comprises a support plate, a plurality of inner molds, a plurality of inner molds, a plurality of inner molds and a plurality of inner molds, wherein the middle part of the support plate is a high-voltage coil placing area; the plurality of pressing strips are symmetrically arranged on the upper surface of the high-voltage coil and are not overlapped with the projection surface of the high-voltage coil inner mold; the lower ends of the connecting rods are installed in the strip-shaped holes, the upper ends of the connecting rods are detachably connected with the ends of the pressing strips, and the connecting rods are used for limiting the positions of the pressing strips. And the lifting power device is used for lifting the high-voltage coil inner mold through a preset lifting lug of the high-voltage coil inner mold. According to the drawing tool, the high-voltage coil is fixed through the pressing strip and the supporting plate, the inner mold of the high-voltage coil is hoisted through the hoisting power device, rapid separation is achieved, the appearance quality of the inner mold of the high-voltage coil is guaranteed, and the production efficiency is improved; meanwhile, a plurality of strip-shaped holes are formed in the supporting plate of the pulling device, so that the distance between the pressing strips is convenient to adjust, and coils with different capacities are convenient to adjust and use.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage coils of dry-type transformers, in particular to an inner mold drawing tool for high-voltage coils of dry-type transformers. Background Art

[0002] In recent years, the demand for downstream industries related to my country's dry-type transformer industry has continued to grow, so the demand for dry-type transformers has shown a steady growth trend. Data shows that my country's dry-type transformer output in 2023 will be about 251.5 million kilovolt-amperes. With the continuous growth of energy demand and the replacement of power equipment, the dry-type transformer market has shown a stable growth trend. Especially in application areas that require environmental friendliness and high safety, dry-type transformers have been widely used. In this market context, improving production efficiency and strengthening product competitiveness have become the current top priority for major transformer manufacturers.

[0003] In the actual manufacturing process of the high-voltage coil of the dry-type transformer, the inner mold of the high-voltage coil is evenly coated with a release agent before winding. After the high-voltage coil is wound and poured and solidified, the inner and outer molds of the high-voltage coil are removed. The high-voltage inner mold is affected by the coil structure, height, internal stress, mold gradient, release agent, etc., and it is difficult to demold the mold. In the early stage of mold use, the mold is often demolded by knocking, which is labor-intensive and easy to damage the mold and the high-voltage coil. Utility Model Content

[0004] The present application provides a dry-type transformer high-voltage coil inner mold extraction tooling for use in the high-voltage coil demolding process of epoxy resin casting, thereby solving the problem of high-voltage coil inner mold demolding difficulty in the prior art, achieving rapid demolding, ensuring the appearance quality of the mold and the high-voltage coil, and improving production efficiency.

[0005] The present application embodiment provides a dry-type transformer high-voltage coil inner mold drawing tool, including:

[0006] A support plate, wherein the middle portion of the support plate is a placement area for the high-voltage coil, and the support plate is provided with a plurality of strip holes on both sides of the placement area;

[0007] A pressure strip, at least two of which are provided, and the plurality of pressure strips are symmetrically arranged on the upper surface of the high-voltage coil and do not overlap with the projection surface of the inner mold of the high-voltage coil;

[0008] A connecting rod, wherein a plurality of connecting rods are provided, wherein the lower end of the connecting rod is installed in the strip-shaped hole, and the upper end is detachably connected to the end of the pressure strip, and the connecting rod is used to define the position of the pressure strip so that the pressure strip fixes the high-voltage coil between the support plate and the pressure strip;

[0009] A lifting power device, wherein the high-voltage coil inner mold is preset with a lifting lug, and the lifting power device lifts the high-voltage coil inner mold through the lifting lug.

[0010] The beneficial effect of the above embodiment is that the pulling tool fixes the high-voltage coil through the pressure strip and the support plate, and lifts the inner mold of the high-voltage coil through the lifting power device, so that the inner mold overcomes the friction between it and the inner surface of the high-voltage coil, and achieves rapid separation, thereby ensuring the appearance quality of the high-voltage coil-inner mold and improving production efficiency. At the same time, a number of strip holes are opened on the support plate of the pulling device to facilitate the adjustment of the spacing between the pressure strips and the adjustment of coils of different capacities.

[0011] Based on the above embodiments, the present application can be further improved as follows:

[0012] In one embodiment of the present application, a fixing foot is fixedly connected to the bottom of the support plate, and the support plate is fixed to the concrete foundation through the fixing foot. The fixing foot firmly fixes the bottom support plate of the tooling and suspends the support plate from the ground surface, which is convenient for connecting the connecting rod.

[0013] In one embodiment of the present application, the fixing foot is a channel steel arranged at the bottom, and the fixing foot is fixed to the concrete foundation by anchor bolts, so that the connection is firm and reliable.

[0014] In one embodiment of the present application, the connecting rod is a screw rod, and the two ends of the connecting rod are connected to the support plate and the pressure strip through nuts, so as to facilitate the adjustment of the spacing between the pressure strip and the support plate, and ensure the fixing effect of the pressure strip and the support plate on the high-voltage coil when pressure is required.

[0015] In one embodiment of the present application, the pressure strip is a channel steel, and the pressure strip is provided with a through hole for the connecting rod to pass through, so that the structure is simple and the connection is convenient.

[0016] In one embodiment of the present application, the support plate is a steel plate with a flat surface and high overall strength.

[0017] In one embodiment of the present application, the lifting power device is a crane, which reduces the intensity of manpower consumption.

[0018] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0019] 1. The extraction tooling is connected to the strip holes of the bottom flat steel plate through a group of channel steels pressed on the high-voltage coil. When the lifting power device pulls the inner mold, the structure will "press" the high-voltage coil, thereby overcoming the upward friction force and realizing the rapid separation of the coil and the inner mold.

[0020] 2. The strip hole design adopted on the support plate of the extraction tool is suitable for high-voltage coils of different specifications.

[0021] 3. The pulling tool uses a lifting power device for traction, which reduces the intensity of manpower consumption and makes the lifting force more stable, thus playing a role in protecting the inner mold and high-voltage coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 This is a front view structural schematic diagram of a dry-type transformer high-voltage coil inner mold extraction tooling in this embodiment;

[0024] Figure 2 This is a schematic diagram of the top view of the structure of a dry-type transformer high-voltage coil inner mold extraction tool in this embodiment;

[0025] Among them, 1. concrete foundation, 2. anchor bolts, 3. fixed feet, 4. support plates, 41. strip holes, 5. high-voltage coils, 6. high-voltage coil inner molds, 61. lifting ears, 7. connecting rods, 8. pressure strips, and 9. lifting power devices. DETAILED DESCRIPTION

[0026] The present invention is further explained below in conjunction with specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "peripheral surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or is the orientation or positional relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, terms such as "vertical" do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the description of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in the present invention and the features of different embodiments or examples without contradiction.

[0031] The embodiment of the present application provides a dry-type transformer high-voltage coil inner mold extraction tool, which is used in the high-voltage coil demolding process of epoxy resin pouring, thereby solving the problem of high-voltage coil inner mold demolding difficulty in the prior art, achieving rapid demolding, ensuring the appearance quality of the mold and the high-voltage coil, and improving production efficiency.

[0032] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows:

[0033] Example:

[0034] like Figure 1-2 As shown, a dry-type transformer high-voltage coil inner mold extraction tool includes: a support plate 4, a pressure strip 8, a connecting rod 7 and a lifting power device 9.

[0035] The support plate 4 is a steel plate, and a fixing foot 3 is welded at the bottom of the support plate 4. The fixing foot 3 is a bottom channel steel, and the bottom channel steel is fixed to the concrete foundation 1 by anchor bolts 2. The middle part of the support plate 4 is the placement area of ​​the high-voltage coil 5, and the support plate 4 is provided with a plurality of strip holes 41 on both sides of the placement area.

[0036] There are at least two pressure strips 8, and the multiple pressure strips 8 are symmetrically arranged on the upper surface of the high-voltage coil 5, and have no overlap with the projection surface of the high-voltage coil inner mold 6; the pressure strip 8 is a channel steel arranged on the top, and the pressure strip 8 has a through hole for the connecting rod 7 to pass through.

[0037] The connecting rod 7 is a screw rod, and multiple connecting rods are provided. The lower end of the connecting rod 7 is installed in the strip hole 41, and the upper end is detachably connected to the end of the pressure strip 8. The connecting rod 7 is used to limit the position of the pressure strip 8, so that the pressure strip 8 fixes the high-voltage coil 5 between the support plate 4 and the pressure strip 8; the two ends of the connecting rod 7 are respectively connected to the support plate 4 and the pressure strip 8 by nuts.

[0038] The high-voltage coil inner mold 6 is preset with a lifting lug 61, and the lifting power device 9 lifts the high-voltage coil inner mold 6 through the lifting lug 61. The lifting power device 9 can be a crane to reduce the intensity of manpower consumption.

[0039] The use process of the above-mentioned extraction tool is as follows:

[0040] The anchor bolts 2 are pre-buried in the concrete foundation 1, and the fixing feet 3 are fixed to the concrete foundation 1 through the anchor bolts 2 with nuts; then the support plate 4 is placed on the fixing feet 3 and welded.

[0041] When the high-voltage coil 5 and the high-voltage coil inner mold 6 are stuck and cannot be demolded smoothly, the high-voltage coil 5 and the high-voltage coil inner mold 6 are placed flatly in the middle placement area of ​​the support plate 4, and a pressure strip 8 is placed on both sides of the top of the high-voltage coil 5. The pressure strip 8 and the support plate 4 are fixedly connected by a connecting rod 7; after fixing each part, the lifting ear 61 on the high-voltage coil inner mold 6 is lifted by the lifting power device 9; during the lifting process, the high-voltage coil 5 is fixed due to the action of the pressure strip 8, and the inner membrane of the high-voltage coil 5 overcomes the friction between it and the inner surface of the high-voltage coil 5, so that the high-voltage coil inner mold 6 and the high-voltage coil 5 can be successfully and quickly separated.

[0042] In the above-mentioned drawing tool, the high-voltage coil 5, the support plate 4 and the pressure strip 8 are connected into a whole through the connecting rod 7, and the lifting device directly lifts the high-voltage coil inner mold 6 through the lifting ear 61 on the inner film of the high-voltage coil 5. Figure 2 It can be seen in the figure that the pressure strip 8 presses the two sides of the high-voltage coil 5, and the force-bearing surface is large, so as to prevent the high-voltage coil 5 from being damaged when the high-voltage coil inner mold 6 is lifted.

[0043] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0044] 1. The extraction tooling is connected to the strip holes of the bottom flat steel plate through a group of channel steels pressed on the high-voltage coil. When the lifting power device pulls the inner mold, the structure will "press" the high-voltage coil, thereby overcoming the upward friction force and realizing the rapid separation of the coil and the inner mold.

[0045] 2. The strip hole design adopted on the support plate of the extraction tool is suitable for high-voltage coils of different specifications.

[0046] 3. The pulling tool uses a lifting power device for traction, which reduces the intensity of manpower consumption and makes the lifting force more stable, thus playing a role in protecting the inner mold and high-voltage coil.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A dry-type transformer high-voltage coil inner mold drawing tool, characterized in that: include: A support plate, wherein the middle portion of the support plate is a placement area for the high-voltage coil, and the support plate is provided with a plurality of strip holes on both sides of the placement area; A pressure strip, at least two of which are provided, and the plurality of pressure strips are symmetrically arranged on the upper surface of the high-voltage coil and do not overlap with the projection surface of the inner mold of the high-voltage coil; A connecting rod, wherein a plurality of connecting rods are provided, wherein the lower end of the connecting rod is installed in the strip-shaped hole, and the upper end is detachably connected to the end of the pressure strip, and the connecting rod is used to define the position of the pressure strip so that the pressure strip fixes the high-voltage coil between the support plate and the pressure strip; A lifting power device, wherein the high-voltage coil inner mold is preset with a lifting lug, and the lifting power device lifts the high-voltage coil inner mold through the lifting lug.

2. The inner mold drawing tool for high-voltage coil of dry-type transformer according to claim 1 is characterized in that: A fixing foot is fixedly connected to the bottom of the support plate, and the support plate is fixed on the concrete foundation through the fixing foot.

3. The inner mold drawing tool for high-voltage coil of dry-type transformer according to claim 2 is characterized in that: The fixing foot is a channel steel, and the fixing foot is fixed on the concrete foundation by anchor bolts.

4. The inner mold drawing tool for high-voltage coil of dry-type transformer according to claim 1 is characterized in that: The connecting rod is a screw rod, and two ends of the connecting rod are connected to the support plate and the pressure strip through nuts respectively.

5. The inner mold drawing tool for high-voltage coil of dry-type transformer according to claim 4 is characterized in that: The pressure strip is a channel steel and is provided with a through hole for the connecting rod to pass through.

6. The inner mold drawing tool for high-voltage coil of dry-type transformer according to claim 1 is characterized in that: The support plate is a steel plate.

7. The inner mold drawing tool for high-voltage coil of dry-type transformer according to claim 1 is characterized in that: The lifting power device is a crane.

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