A kind of amorphous alloy three-dimensional coil inner insulation cylinder structure

Abstract

The utility model discloses a kind of amorphous alloy three-dimensional winding coil inner insulation cylinder structure, belong to coil insulation cylinder field, a kind of amorphous alloy three-dimensional winding coil inner insulation cylinder structure, comprising: inner sleeve and multiple winding assembly, inner sleeve is sleeved in amorphous alloy core outside, inner sleeve outside is wound with transformer coil, multiple winding assembly is evenly distributed in inner sleeve outer surface, winding assembly includes installation partition, installation partition is fixedly installed in inner sleeve outer end, the outer end of inner sleeve is installed with multiple equidistant distribution winding assembly, so that transformer coil is separated winding in the outer end of inner sleeve by winding assembly, installation partition will be separated between transformer coil and inner sleeve at this time so that insulating oil can be vertically fast through, multiple equidistant distribution air slot is opened in the back of installation partition, form horizontal passage, so it can also be horizontally fast through, so that winding assembly can form the passage of insulating oil fast through heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of coil insulation cylinders, and more specifically, to an amorphous alloy three-dimensional coil inner insulation cylinder structure. Background Technology

[0002] An insulating cylinder is a key insulation component used in amorphous alloy transformers. It is designed to meet the special insulation and mechanical support requirements of three-dimensional wound core transformers. Amorphous alloy is a metallic material with disordered atomic arrangement and extremely low magnetic hysteresis loss. It is often used in the core of high-efficiency and energy-saving transformers. The inner insulating cylinder is an insulating component installed between the core and the coil, providing electrical isolation, mechanical support and heat dissipation channels. It is a key guarantee for the efficient and stable operation of amorphous alloy transformers.

[0003] Chinese Patent Announcement No. CN218123179U discloses a coil insulation cylinder and a three-dimensional wound core transformer. This solution sets up a first coil support structure obtained by splicing, and connects the second splicing plate of the second coil support structure with two or more adjacent first splicing plates. The coil insulation cylinder of this utility model has good structural strength, can more effectively support the low-voltage coil, and increase the coil's short-circuit resistance. At the same time, the mounting groove set on the second coil support structure can hold the lead busbar, which can apply greater tension to the foil during winding, making the coil winding tighter and increasing the transformer's short-circuit resistance.

[0004] Transformer coils are wound with copper or aluminum wires. The wires have resistance. When current passes through them, according to Joule's law, the resistance causes electrical energy to be converted into heat energy. Immersed transformers dissipate heat through insulating mineral oil. However, the coils need to be tightly wound around the insulating cylinder one turn at a time. Therefore, the above-mentioned solutions and traditional insulating cylinders have small heat dissipation gaps, which are not conducive to the rapid and large-scale heat dissipation of insulating oil.

[0005] Therefore, an amorphous alloy three-dimensional coil inner insulating cylinder structure is proposed to address the above problems. Utility Model Content

[0006] 1. Technical problems to be solved

[0007] This invention provides an amorphous alloy three-dimensional coil inner insulating cylinder structure, which can improve the problems existing in related technologies: the coil is tightly wound around the insulating cylinder, with small heat dissipation gaps, which is not conducive to the rapid and large-scale heat dissipation of insulating oil.

[0008] 2. Technical Solution

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] This application provides an amorphous alloy three-dimensional coil inner insulating cylinder structure, including: an inner sleeve and multiple winding assemblies. The inner sleeve is sleeved on the outside of an amorphous alloy iron core. A transformer coil is wound around the outside of the inner sleeve. The multiple winding assemblies are evenly distributed on the outer surface of the inner sleeve. Each winding assembly includes a mounting spacer. The mounting spacer is fixedly installed on the outer end of the inner sleeve. The outer end of the mounting spacer has multiple vertically equidistantly distributed slots and multiple spacer plates. The mounting spacer is located between the transformer coil and the inner sleeve. The mounting spacer prevents the transformer coil from creating a gap with the inner sleeve, allowing insulating oil to flow. The spacer plates also increase the heat dissipation gap of the transformer coil.

[0011] The technical solutions described in this application embodiment have at least the following technical effects:

[0012] Multiple equidistant winding assemblies are installed at the outer end of the inner sleeve, so that the transformer coil is wound around the outer end of the inner sleeve through the winding assemblies. At this time, the spacer will separate the transformer coil and the inner sleeve, allowing the insulating oil to pass through quickly vertically. On the back of the spacer, multiple equidistant slots are opened to form a horizontal channel, allowing it to pass through quickly horizontally as well. Thus, the winding assembly can form a channel for the insulating oil to quickly dissipate heat.

[0013] In some embodiments, an inner insulating paper is installed on the inner side of the inner sleeve, and the inner insulating paper wraps around the outside of the amorphous alloy iron core to protect the inner sleeve. An outer insulating coating is provided on the outside of the inner sleeve, and the outer insulating coating is a polytetrafluoroethylene coating.

[0014] In some embodiments, the inner sleeve is provided with two outer sleeves at its outer end, and each end of the outer sleeve is fixedly connected to a connecting block. The two outer sleeves are connected through the connecting blocks, and the outer sleeves are sleeved on the outside of the transformer coil.

[0015] In some embodiments, a plurality of spacers are provided on the inner side of the inner insulating paper, each spacer including a buffer strip, the buffer strip being fixedly installed on the inner side of the inner insulating paper, the buffer strip being made of silicone rubber, and a plurality of vertically distributed oil guide grooves being provided on the outer end of the buffer strip, the buffer strip being in close contact with the outside of the amorphous alloy iron core.

[0016] In some embodiments, the inner sleeve includes a plurality of structural layers and a plurality of adhesive layers, the structural layers and adhesive layers being stacked sequentially, the structural layers being made of fiberglass cloth and the adhesive layers being made of epoxy resin.

[0017] In some embodiments, the mounting strip has grooves on both sides, and a locking block adapted to the groove is fixedly installed on the outer side of the partition plate, and the partition plate is slidably connected to the groove through the locking block.

[0018] In some embodiments, a protrusion is fixedly installed on the outer end of the partition plate, and an insert is fixedly installed on the outer end of the partition plate. A plurality of slots adapted to the insert are provided on the inner side of the outer sleeve. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the spacer bar structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the front structure of the winding assembly of this utility model;

[0023] Figure 5 This is a schematic diagram of the back structure of the winding assembly of this utility model;

[0024] Figure 6 For the present utility model Figure 5 Enlarged structural diagram at point A in the middle;

[0025] Figure 7 This is a schematic diagram of the inner sleeve structure of this utility model.

[0026] Explanation of the labels in the diagram:

[0027] 1. Outerwear leg;

[0028] 2. Inner sleeve; 21. Structural layer; 22. Adhesive layer;

[0029] 3. Spacer bar; 31. Buffer bar; 32. Oil guide groove;

[0030] 4. Winding assembly; 41. Mounting spacer; 42. Spacer plate; 43. Empty slot; 44. Slide groove; 45. Locking block; 46. Protrusion; 47. Insertion block;

[0031] 5. Card slot;

[0032] 6. Inner insulating paper;

[0033] 7. External insulating coating;

[0034] 8. Connecting block. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0036] Please see Figure 1 - Figure 7 An amorphous alloy three-dimensional coil inner insulation cylinder structure includes: an inner sleeve 2 and multiple winding assemblies 4. The inner sleeve 2 is sleeved on the outside of the amorphous alloy iron core. A transformer coil is wound around the outside of the inner sleeve 2. The multiple winding assemblies 4 are evenly distributed on the outer surface of the inner sleeve 2. The winding assembly 4 includes a mounting spacer 41, which is fixedly installed on the outer end of the inner sleeve 2. The outer end of the mounting spacer 41 has multiple vertically equidistantly distributed slots 43, and multiple spacer plates 42 are provided on the outer end of the mounting spacer 41. The mounting spacer 41 is located between the transformer coil and the inner sleeve 2. The transformer coil is blocked by the mounting spacer 41, which creates a gap between it and the inner sleeve 2 to allow the insulating oil to flow. The spacer plates 42 are used to increase the heat dissipation gap of the transformer coil.

[0037] The device in this scheme is mainly used inside power transformers to provide insulation, protection, and support. The main difference between amorphous alloy transformers and traditional transformers is the material of their internal core. Amorphous alloys are a type of metallic glass, a special soft magnetic material. Their atomic arrangement is an amorphous structure similar to glass, with long-range disorder and short-range order. They also have high hardness. In contrast, traditional cores use silicon steel sheets.

[0038] In this design, the inner sleeve 2 is the inner layer, while multiple winding assemblies 4 are equidistantly distributed around the outer perimeter of the inner sleeve 2. When the transformer coil is wound, they can provide support and barrier, ensuring that the transformer coil is wound around the outer end of the inner sleeve 2 through the winding assemblies 4. At this time, the spacer 41 will separate the transformer coil and the inner sleeve 2, allowing the insulating oil to pass through quickly in a vertical direction. On the back of the spacer 41, multiple equidistant slots 43 are opened to form a horizontal channel, allowing it to pass through quickly in a horizontal direction as well. Thus, the winding assemblies 4 can form a channel for the insulating oil to quickly dissipate heat.

[0039] Please see Figure 1 and Figure 2 The inner sleeve 2 is equipped with inner insulating paper 6, which wraps around the amorphous alloy iron core to protect the inner sleeve 2. The inner sleeve 2 is provided with an outer insulating coating 7, which is a polytetrafluoroethylene coating.

[0040] Two outer sleeves 1 are provided at the outer end of the inner sleeve 2. Both ends of the outer sleeve 1 are fixedly connected to the connecting block 8. The two outer sleeves 1 are connected through the connecting block 8. The outer sleeve 1 is sleeved on the outside of the transformer coil.

[0041] This design is a double-layer design. The inner sleeve 2 is the inner layer, and the outer sleeve 1 is the outer layer. The outer sleeve 1 is fitted over the transformer coil. The outer sleeve 1 and the inner sleeve 2 are made of the same material and have the same properties. The two outer sleeves 1 are U-shaped and can be put together to enclose the inner sleeve 2 and the coil. Connecting blocks 8 are fixed on both sides of the outer sleeve 1. The connecting blocks 8 on the two outer sleeves 1 can be connected by glue or buckles. The outer sleeve 1 not only supports and increases the stability of the coil installation, but also, due to its insulation properties, can directly insulate and isolate the transformer tank and the coil from the grounded transformer coil.

[0042] An inner insulating paper 6 is provided on the inner side of the inner sleeve 2. The inner insulating paper 6 is wrapped around the outside of the amorphous alloy iron core, with a spacer bar 3 in between. The inner insulating paper 6 can be made of materials such as NOMEX 410 type aromatic polyamide, which not only improves the insulation between it and the amorphous alloy iron core, but also protects the inner sleeve 2 from being scratched due to the high hardness and sharp edges of the amorphous alloy.

[0043] The outer end of the inner sleeve 2 is coated with an outer insulating coating 7, which is a polytetrafluoroethylene coating. It is a functional coating with PTFE as the main component. Due to its unique chemical stability and physical properties, it can effectively resist oil stains, moisture and mechanical wear, and improve service life.

[0044] Please see Figure 2 and Figure 3 Multiple spacer bars 3 are provided on the inner side of the inner insulating paper 6. The spacer bars 3 include buffer bars 31. The buffer bars 31 are fixedly installed on the inner side of the inner insulating paper 6. The buffer bars 31 are made of silicone rubber. Multiple vertically distributed oil guide grooves 32 are opened at the outer end of the buffer bars 31. The buffer bars 31 are in close contact with the outside of the amorphous alloy iron core.

[0045] In this design, the spacer 3 is located between the inner insulating paper 6 and the iron core. The buffer strip 31 is a long strip, evenly distributed on the inner side of the inner insulating paper 6, and can be glued together. The buffer strip 31 is directly attached to the outside of the iron core. The buffer strip 31 is made of silicone rubber. Due to the interaction between the alternating current and the leakage magnetic field in the winding, a periodic electromagnetic force is generated, which causes slight vibration of the coil. Therefore, the transformer will vibrate when it is working. The buffer strip 31 can buffer the micro-vibration caused by magnetostriction through elastic deformation. At the same time, multiple oil guide grooves 32 are opened at the outer end of the buffer strip 31. The oil guide grooves 32 can play the role of allowing insulating oil to flow through, which can further improve its heat dissipation.

[0046] Please see Figure 7 The inner sleeve 2 includes multiple structural layers 21 and multiple adhesive layers 22, which are stacked sequentially. The structural layers 21 are made of fiberglass cloth, and the adhesive layers 22 are made of epoxy resin.

[0047] The inner sleeve 2 in this design is mainly formed by stacking and pressing multiple structural layers 21 and buffer strips 31 in sequence. The structural layer 21 is made of fiberglass cloth, while the adhesive layer 22 is made of epoxy resin. Through its insulation and high strength characteristics, it can improve its support for the coil. The material and characteristics of the outer sleeve 1 are the same as those of the inner sleeve 2.

[0048] Please see Figure 4 - Figure 6 The partition strip 41 has grooves 44 on both sides, and a locking block 45 that matches the groove 44 is fixedly installed on the outside of the partition plate 42. The partition plate 42 is slidably connected to the groove 44 through the locking block 45.

[0049] A protrusion 46 is fixedly installed on the outer end of the partition plate 42, and an insert 47 is fixedly installed on the outer end of the partition plate 42. Multiple slots 5 that are adapted to the insert 47 are opened on the inner side of the outer sleeve 1.

[0050] In this design, the winding assembly 4 is located at the outer end of the inner sleeve 2. The mounting spacer 41 is fixed to the outer end of the inner sleeve 2. Sliding grooves 44 are provided on both sides of the mounting spacer 41. The outer end of the spacer plate 42 is fixed with a locking block 45, which is slidably connected to the sliding groove 44. Therefore, the spacer plate 42 can slide up and down after being installed on the mounting spacer 41. When the coil is wound on the inner sleeve 2 through the mounting spacer 41, the spacer plate 42 can block the coil, creating a uniform gap between each turn of the coil. This allows for heat dissipation gaps between the coils, enabling the insulating oil to flow quickly and increasing its heat dissipation effect.

[0051] On the back of the mounting spacer 41, that is, on the side fixed to the inner sleeve 2, multiple vertically equidistant slots 43 are opened. Due to the spacing of the mounting spacer 41 and the conductivity of the slots 43, channels can be generated in both the vertical and horizontal directions after the coil is wound. The insulating oil used for heat dissipation can flow quickly and in large quantities in the channels, carrying away the heat generated when the coil is working and improving the heat dissipation effect.

[0052] A protrusion 46 is also fixed on each spacer plate 42. The protrusion of the protrusion 46 can limit the coil that is in close contact with the surface of the mounting strip 41. The installation position of the protrusion 46 needs to be adjusted and customized according to the specific coil size so that the coil can be stuck between the protrusion 46 and the mounting strip 41 to improve its stability.

[0053] On the other side of the partition plate 42, the insert block 47 is fixed, and the inner side of the outer sleeve 1 has multiple equally spaced slots 5. When the two outer sleeves 1 are placed outside the inner sleeve 2, the insert block 47 can be inserted into the slot 5. At this time, the outer sleeve 1 can be stably installed outside the inner sleeve 2. The stability of the installation can be improved by the cooperation of the insert block 47 and the slot 5.

[0054] Working principle: In this scheme, the inner insulating paper 6 and the inner sleeve 2 are both wrapped around the outside of the iron core. The inner insulating paper 6 and the iron core are separated by spacer bars 3. The buffer strip 31 buffers the micro-vibrations caused by magnetostriction through elastic deformation. The winding assembly 4 is set at the outer end of the inner sleeve 2. Multiple slots 43 are opened on the back of the mounting spacer 41. At this time, the spacing of the mounting spacer 41 and the conduction of the slots 43 can create channels in both the vertical and horizontal directions after the coil is wound. The insulating oil used for heat dissipation can flow quickly and in large quantities in the channels, improving the heat dissipation effect.

Claims

1. An amorphous alloy three-dimensional coil inner insulating cylinder structure, characterized in that, include: Inner sleeve (2), the inner sleeve (2) is sleeved on the outside of the amorphous alloy iron core, and a transformer coil is wound on the outside of the inner sleeve (2); Multiple winding assemblies (4) are evenly distributed on the outer surface of the inner sleeve (2). Each winding assembly (4) includes a mounting spacer (41). The mounting spacer (41) is fixedly installed on the outer end of the inner sleeve (2). The outer end of the mounting spacer (41) is provided with multiple vertically equidistant slots (43), and the outer end of the mounting spacer (41) is provided with multiple spacer plates (42). The mounting spacer (41) is located between the transformer coil and the inner sleeve (2). The transformer coil is separated from the inner sleeve (2) by a spacer (41) to allow the insulating oil to flow, and the transformer coil is spaced by a spacer plate (42) to increase the heat dissipation gap.

2. The amorphous alloy three-dimensional coil inner insulating cylinder structure according to claim 1, characterized in that: The inner sleeve (2) is equipped with inner insulating paper (6) on the inside. The inner insulating paper (6) wraps around the amorphous alloy iron core to protect the inner sleeve (2). The outer sleeve (2) is provided with an outer insulating coating (7), which is a polytetrafluoroethylene coating.

3. The amorphous alloy three-dimensional coil inner insulating cylinder structure according to claim 1, characterized in that: The inner sleeve (2) has two outer sleeves (1) at its outer end. Both ends of the outer sleeves (1) are fixedly connected to connecting blocks (8). The two outer sleeves (1) are connected to each other through the connecting blocks (8). The outer sleeves (1) are sleeved on the outside of the transformer coil.

4. The amorphous alloy three-dimensional coil inner insulating cylinder structure according to claim 2, characterized in that: The inner insulating paper (6) has a plurality of spacers (3) evenly distributed on its inner side. The spacers (3) include buffer strips (31). The buffer strips (31) are fixedly installed on the inner side of the inner insulating paper (6). The buffer strips (31) are made of silicone rubber. The outer end of the buffer strips (31) has a plurality of vertically evenly distributed oil guide grooves (32). The buffer strips (31) are in close contact with the outside of the amorphous alloy iron core.

5. The amorphous alloy three-dimensional coil inner insulating cylinder structure according to claim 1, characterized in that: The inner sleeve (2) includes multiple structural layers (21) and multiple adhesive layers (22), which are stacked sequentially. The structural layers (21) are made of fiberglass cloth, and the adhesive layers (22) are made of epoxy resin.

6. The amorphous alloy three-dimensional coil inner insulating cylinder structure according to claim 3, characterized in that: The mounting spacer (41) has grooves (44) on both sides. The spacer plate (42) has a locking block (45) that matches the groove (44) fixedly installed on the outside. The spacer plate (42) is slidably connected to the groove (44) through the locking block (45).

7. The amorphous alloy three-dimensional coil inner insulating cylinder structure according to claim 6, characterized in that: The outer end of the partition plate (42) is fixedly installed with a protrusion (46) and the outer end of the partition plate (42) is fixedly installed with a plug (47). The inner side of the outer sleeve (1) is provided with a plurality of slots (5) that are adapted to the plug (47).

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