Iron core oil channel assembly, transformer body and transformer

Abstract

The embodiment of the utility model provides a kind of iron core oil channel component, transformer body and transformer, can unify the shape size and arrangement mode of insulating pad, make insulating pad suitable for machine automation production and installation, improve the production and installation efficiency of pad. Iron core oil channel component includes multiple insulating pads;Multiple insulating pads are all clamped between two adjacent core pieces of iron core, and multiple insulating pads are all spaced, to form oil channel between two adjacent core pieces;Wherein, multiple insulating pads are all arranged along vertical direction, and the shape size of multiple insulating pads is all same, the length of the insulating pad is a, 90mm≤a≤110mm.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a core oil passage assembly, a transformer body, and a transformer. Background Technology

[0002] The transformer core, as the skeleton of the transformer, is the medium for energy conversion. Large-capacity transformers, due to their larger core diameter, typically have insulating oil channels in the middle of the core to dissipate heat generated during operation, reduce the temperature rise of the core, and ensure safe and stable operation. The method for creating these insulating oil channels in the core involves placing multiple spacers between the laminations, thus forming insulating oil channels between two laminations.

[0003] In existing technologies, such as Figure 1 As shown, the pads are set differently at different positions in the core. The pads at the upper and lower yokes are set vertically, while the pads at the side posts and core posts are set at a 45° angle. The reason for this setting is that the existing pads are all installed by manual pasting. In order to reduce the total number of pads installed in each transformer core and avoid reducing the installation efficiency, the length L of the pads is set to be relatively long (200mm≤L≤500mm). In this case, in order to ensure the number of oil passages on the side of the side posts and core posts, the pads at the side posts and core posts need to be set at a 45° angle.

[0004] However, due to the special shape of the iron chip, such as Figure 1 As shown, this setup requires the use of spacers of different lengths at different locations on the iron chip to fill the entire chip, resulting in inconsistent dimensions of the spacers. When making these spacers, the dimensions can only be specially adjusted manually, making it impossible to use automated mass production machines to produce the spacers, thus resulting in low production efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the existing technology by providing an iron core oil channel assembly, transformer body and transformer, which can unify the shape, size and arrangement of the insulating pads, making the insulating pads suitable for automated machine production and installation, and improving the production and installation efficiency of the pads.

[0006] In a first aspect, this utility model provides an iron core oil channel assembly, which includes a plurality of insulating pads; the plurality of insulating pads are sandwiched between two adjacent iron core chips, and the plurality of insulating pads are spaced apart to form an oil channel between two adjacent iron core chips; wherein, the plurality of insulating pads are arranged in a vertical direction, and the plurality of insulating pads have the same external dimensions, and the length of the insulating pad is a, 90mm≤a≤110mm.

[0007] In some embodiments, the plurality of insulating pads are arranged in multiple rows in a horizontal direction.

[0008] In some embodiments, the row spacing between any two adjacent insulating pads in each row is equal.

[0009] In some embodiments, the plurality of insulating pads are arranged in multiple columns in the vertical direction.

[0010] In some embodiments, the column spacing between any two adjacent insulating pads in each column is equal.

[0011] In some embodiments, the row spacing of any two adjacent insulating pads is equal, and the column spacing of any two adjacent insulating pads is equal.

[0012] In some embodiments, the width of the insulating pad is b, the thickness of the insulating pad is c, 13mm≤b≤17mm, 4mm≤c≤6mm.

[0013] In some embodiments, the insulating pad is fixed to the iron chip by an adhesive.

[0014] In some embodiments, the insulating pad is made of epoxy phenolic resin board.

[0015] Therefore, the iron core oil channel assembly provided in this embodiment of the utility model, by setting multiple insulating pads and sandwiching them between two adjacent iron core chips, with the multiple insulating pads spaced apart, forms oil channels between two adjacent iron core chips, allowing the insulating oil to dissipate heat on the iron core as it flows through these channels. By setting the length of the insulating pads within the aforementioned length range and arranging them all vertically, the multiple insulating pads can adapt to the shape of the iron core chips, allowing them to cover the entire iron core chip. Furthermore, compared to the prior art, the length of the insulating pads in this embodiment is smaller, reducing the length of the oil flow path formed by the insulating pads, increasing the number of oil channels, and improving the heat dissipation effect on the iron core. In this case, even with the insulating pads arranged vertically, multiple oil channel openings can still be formed on the side of the iron core, allowing the insulating oil to enter the oil channels from the side of the iron core, ensuring the heat dissipation effect of the insulating oil on the iron core. Simultaneously, by making the external dimensions of the multiple insulating pads identical, the external dimensions of the insulating pads can be standardized. This design allows the insulating pads to be used in automated machine production. Compared to existing technologies, it eliminates the need for manual adjustments to the dimensions of the insulating pads, thereby improving production efficiency. Furthermore, since multiple insulating pads are arranged vertically, there is no need to individually adjust their orientation when installing them on the iron core chip. The machine can easily lift and lower multiple insulating pads for positioning and installation, making the iron core oil channel assembly suitable for automated machine installation, improving installation efficiency and reducing errors during manual pad installation. Even if the total number of insulating pads increases due to their shorter length in this embodiment, the installation efficiency of the iron core oil channel assembly can be avoided by using machine installation.

[0016] Secondly, this utility model embodiment also provides a transformer body, which includes an iron core, an iron core oil duct assembly as described in the first aspect, and windings. The iron core is formed by stacking multiple iron core sheets. The windings are wound around the outside of the iron core.

[0017] Thirdly, this utility model embodiment also provides a transformer, which includes an oil tank and the transformer body as described in the second aspect. The oil tank contains insulating oil, and the transformer body is immersed in the insulating oil within the oil tank.

[0018] The transformer body and transformer described above have the same beneficial technical effects as the core oil passage assembly provided in some of the above embodiments, and will not be described again here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of this utility model, the accompanying drawings used in some embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only drawings of some embodiments of this utility model, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this utility model.

[0020] Figure 1 A layout diagram of a pad block provided for the prior art;

[0021] Figure 2 This is a layout diagram of an insulating pad provided for an embodiment of the present utility model.

[0022] Among them, 1-insulating pad. Detailed Implementation

[0023] The technical solutions of some embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments provided by this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0024] Where there is no conflict, the various embodiments of this utility model and the features thereof can be combined with each other.

[0025] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.

[0026] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open-ended and encompassing, meaning "including, but not limited to." Furthermore, the specific features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

[0027] In describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be interpreted broadly; for example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. The embodiments of the present invention described herein are not necessarily limited to the content of this document.

[0028] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and the area of ​​regions are enlarged for clarity. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the areas of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0029] Example 1:

[0030] like Figure 2 As shown in the figure, this utility model embodiment provides a core oil passage assembly, which is applied in the transformer core.

[0031] like Figure 2 As shown, the iron core oil channel assembly includes multiple insulating blocks 1. Each insulating block 1 is sandwiched between two adjacent iron core wafers, and the multiple insulating blocks 1 are spaced apart to form an oil channel between adjacent iron core wafers. The multiple insulating blocks 1 are all arranged vertically, and the external dimensions of the multiple insulating blocks 1 are all the same, with a length 'a' of 90mm ≤ a ≤ 110mm.

[0032] As those skilled in the art will understand, the iron core is assembled from multiple vertical iron laminations (e.g., silicon steel sheets). An oil channel assembly can be disposed between two iron laminations in the middle of the iron core to form an oil channel in the middle of the iron core.

[0033] For example, the insulating pad 1 is made of an insulating material with a heat resistance rating of B, in order to improve the service life of the insulating pad 1.

[0034] In some examples, the material of the insulating pad 1 includes an epoxy phenolic resin board.

[0035] The epoxy phenolic resin board has fewer burrs after molding, which is beneficial for the automated production of the insulating pad 1.

[0036] like Figure 2 As shown, the length of insulating pad 1 is the dimension of insulating pad 1 in the vertical direction.

[0037] For example, the length a of the insulating pad 1 can be 90mm, 100mm or 110mm, etc.

[0038] By setting the length of the insulating pad 1 within the aforementioned length range, and ensuring that multiple insulating pads 1 are all arranged vertically, as shown... Figure 2As shown, multiple insulating pads 1 can be adapted to the shape of the iron chip, allowing the insulating pads 1 to cover the entire iron chip. Furthermore, compared to existing technologies, the insulating pads 1 in this embodiment are shorter, reducing the length of the oil flow path formed by the insulating pads 1, increasing the number of oil channels, and improving the heat dissipation effect on the iron core. In this case, even if the insulating pads 1 are vertically arranged, multiple oil passages can still be formed on the side of the iron core, allowing insulating oil to enter the oil channels from the side of the iron core, ensuring the heat dissipation effect of the insulating oil on the iron core. Simultaneously, by making the external dimensions of the multiple insulating pads 1 identical, the external dimensions of the insulating pads 1 can be standardized, making the insulating pads 1 suitable for automated machine production. Compared to existing technologies, this method eliminates the need for manual adjustments to the dimensions of the insulating pads 1, thereby improving production efficiency. Furthermore, since multiple insulating pads 1 are arranged vertically, there is no need to individually adjust their orientation when installing them on the iron core chip. Machines can be used to position and install multiple insulating pads 1 simply by lifting and lowering them, enabling automated machine installation of the iron core oil channel assembly, improving installation efficiency, and reducing errors during manual pad installation. Even if the total number of insulating pads 1 increases due to their shorter length in this embodiment, machine installation can still prevent a reduction in the installation efficiency of the iron core oil channel assembly.

[0039] Therefore, the iron core oil channel assembly provided in this embodiment of the present invention, by setting multiple insulating pads 1 and sandwiching the multiple insulating pads 1 between two adjacent iron cores, so that the multiple insulating pads 1 are evenly spaced, forms an oil channel between two adjacent iron cores, allowing the insulating oil to dissipate heat from the iron core when flowing through the oil channel. By setting the length of the insulating pads 1 within the aforementioned length range, and by arranging the multiple insulating pads 1 in a vertical direction, such as... Figure 2As shown, multiple insulating pads 1 can be adapted to the shape of the iron chip, allowing the insulating pads 1 to cover the entire iron chip. Furthermore, compared to existing technologies, the insulating pads 1 in this embodiment are shorter, reducing the length of the oil flow path formed by the insulating pads 1, increasing the number of oil channels, and improving the heat dissipation effect on the iron core. In this case, even if the insulating pads 1 are vertically arranged, multiple oil passages can still be formed on the side of the iron core, allowing insulating oil to enter the oil channels from the side of the iron core, ensuring the heat dissipation effect of the insulating oil on the iron core. Simultaneously, by making the external dimensions of the multiple insulating pads 1 identical, the external dimensions of the insulating pads 1 can be standardized, making the insulating pads 1 suitable for automated machine production. Compared to existing technologies, this method eliminates the need for manual adjustments to the dimensions of the insulating pads 1, thereby improving production efficiency. Furthermore, since multiple insulating pads 1 are arranged vertically, there is no need to individually adjust their orientation when installing them on the iron core chip. Machines can be used to position and install multiple insulating pads 1 simply by lifting and lowering them, enabling automated machine installation of the iron core oil channel assembly, improving installation efficiency, and reducing errors during manual pad installation. Even if the total number of insulating pads 1 increases due to their shorter length in this embodiment, machine installation can still prevent a reduction in the installation efficiency of the iron core oil channel assembly.

[0040] In some embodiments, such as Figure 2 As shown, multiple insulating pads 1 are arranged in multiple rows in the horizontal direction.

[0041] The above arrangement allows multiple insulating pads 1 to be arranged more regularly in the horizontal direction, making it easier to position the insulating pads 1 during installation.

[0042] In some embodiments, such as Figure 2 As shown, in each row of insulating pads 1, the row spacing between any two adjacent insulating pads 1 is equal.

[0043] like Figure 2 As shown, the row spacing between two adjacent insulating pads 1 is: Figure 2 The horizontal spacing between two adjacent insulating pads 1.

[0044] By setting it up as described above, the width of the oil channels formed by the insulating pad 1 can be made the same, so that the flow resistance of the insulating oil in each oil channel is balanced, and local overheating of the iron core is avoided.

[0045] In some embodiments, such as Figure 2 As shown, multiple insulating pads 1 are arranged in multiple columns in the vertical direction.

[0046] With the above settings, the multiple insulating pads 1 can be arranged more regularly in the vertical direction, which makes it easier for the machine to position the insulating pads 1 when installing them.

[0047] In some embodiments, such as Figure 2 As shown, in each column of insulating pads 1, the column spacing between any two adjacent insulating pads 1 is equal.

[0048] like Figure 2 As shown, the column spacing between two adjacent insulating pads 1 is: Figure 2 The vertical distance between two adjacent insulating pads 1.

[0049] With the above setup, it can be understood that multiple insulating pads 1 are evenly distributed between the two iron chips. In this case, when the multiple insulating pads 1 are installed on the iron chips by the machine, it is convenient for the machine to position them.

[0050] In some embodiments, such as Figure 2 As shown, the width of insulating pad 1 is b, the thickness of insulating pad 1 is c, 13mm≤b≤17mm, 4mm≤c≤6mm.

[0051] The width of insulating pad 1 is Figure 2 The horizontal dimension of the insulating pad 1.

[0052] For example, the width b of the insulating pad 1 can be 13mm, 15mm or 17mm, etc., and the thickness c of the insulating pad 1 can be 4mm, 5mm or 6mm, etc.

[0053] In some examples, the insulating pad 1 is 100mm long, 15mm wide, and 5mm thick.

[0054] The inventors discovered that when the insulating pad 1 is set to the above dimensions, the oil path generated by the insulating pad 1 can be optimized, the heat dissipation efficiency of the iron core can be improved, and the temperature rise performance of the product using the iron core can be improved.

[0055] In some embodiments, the insulating pad 1 is fixed to the iron chip by an adhesive.

[0056] For example, the adhesive can be a one-component epoxy resin, GY-340 anaerobic adhesive, etc.

[0057] With the above settings, the insulating pad 1 can be quickly fixed on the iron chip, and the automatic installation of the insulating pad 1 can be easily achieved by machine.

[0058] Example 2:

[0059] This utility model embodiment also provides a transformer body, applied in a transformer. The transformer body includes an iron core, the iron core oil duct assembly as described in Embodiment 1, and windings. The iron core is formed by stacking multiple iron core sheets. The windings are wound on the outside of the iron core.

[0060] For example, the iron chip is a silicon steel sheet, and the iron core oil channel assembly is disposed between two iron chips in the middle of the iron core to form an oil channel in the middle of the iron core and improve the heat dissipation effect of the iron core.

[0061] The above-mentioned configuration improves the heat dissipation of the core through the core oil duct assembly, thereby optimizing the temperature rise of the transformer body. Furthermore, the insulating pads in the core oil duct assembly can be automated for production and installation, resulting in high production and installation efficiency. This improves the core production efficiency, which in turn increases the transformer body production efficiency.

[0062] Example 3:

[0063] This utility model embodiment also provides a transformer, which includes an oil tank and the transformer body as in Embodiment 2. The oil tank is filled with insulating oil, and the transformer body is immersed in the insulating oil in the oil tank.

[0064] When insulating oil flows through the oil passages in the iron core, it can dissipate heat from the transformer body, thereby reducing the temperature rise of the transformer body. The transformer body in Example 2 has a higher production efficiency, thus improving the overall production efficiency of the transformer.

[0065] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A core oil channel assembly, characterized in that, Includes multiple insulating pads (1); Multiple insulating pads (1) are sandwiched between two adjacent iron chips of the iron core, and the multiple insulating pads (1) are spaced apart to form an oil channel between two adjacent iron chips; Among them, multiple insulating pads (1) are arranged in a vertical direction, and the external dimensions of multiple insulating pads (1) are the same. The length of the insulating pad (1) is a, 90mm≤a≤110mm.

2. The iron core oil passage assembly according to claim 1, characterized in that, Multiple insulating pads (1) are arranged in multiple rows in the horizontal direction.

3. The iron core oil passage assembly according to claim 2, characterized in that, In each row of the insulating pads (1), the row spacing between any two adjacent insulating pads (1) is equal.

4. The iron core oil passage assembly according to claim 3, characterized in that, Multiple insulating pads (1) are arranged in multiple columns in the vertical direction.

5. The iron core oil passage assembly according to claim 4, characterized in that, In each column of insulating pads (1), the column spacing between any two adjacent insulating pads (1) is equal.

6. The iron core oil passage assembly according to claim 5, characterized in that, The width of the insulating pad (1) is b, and the thickness of the insulating pad (1) is c, 13mm≤b≤17mm, 4mm≤c≤6mm.

7. The iron core oil passage assembly according to claim 1, characterized in that, The insulating pad (1) is fixed to the iron chip by an adhesive.

8. The iron core oil passage assembly according to claim 1, characterized in that, The insulating pad (1) is made of epoxy phenolic resin board.

9. A transformer body, characterized in that, include: The iron core is formed by stacking multiple iron chips; The iron core oil passage assembly according to any one of claims 1-8; and, The winding is wound around the outside of the iron core.

10. A transformer, characterized in that, include: An oil tank, the inside of which is filled with insulating oil; and, The transformer body as described in claim 9 is immersed in the insulating oil in the oil tank.

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