Oil-immersed transformer core reinforced by oil leakage prevention sealing layer

Abstract

The utility model relates to transformer iron core technical field, specifically is an oil -immersed transformer iron core of oil seepage prevention sealing layer strengthening, including the iron core main part, the iron core main part contains the iron core column and the iron yoke of adaptation, the iron core column outside is equipped with the wrapping layer, the top and bottom of iron core main part all are equipped with the sealing end cap, the sealing end cap outside is equipped with the groove frame of joint has for positioning the iron core main part, two the groove frame between fixed with iron core main part side face and the side support component of resistance, the utility model discloses realized to the iron core main part all -round sealing and stable support's purpose, increased the overall sealing property and structural stability of iron core, improved the oil seepage prevention ability.

Description

Technical Field

[0001] This utility model relates to the field of transformer core technology, specifically to an oil-immersed transformer core with a reinforced oil-leakage-proof sealing layer. Background Technology

[0002] Oil-immersed transformers are widely used in power systems due to their excellent heat dissipation and insulation properties. However, oil leakage from the transformer core is a recurring problem during long-term operation. Oil leakage not only causes a drop in the transformer oil level, affecting the transformer's normal heat dissipation and insulation performance, but also poses safety hazards such as fires and pollutes the surrounding environment. Traditional oil-immersed transformer cores have certain defects in their sealing structure design; the sealing layer is prone to failure due to aging, mechanical vibration, and other factors, failing to effectively prevent transformer oil leakage. Furthermore, existing sealing materials need improvement in oil resistance, high-temperature resistance, and durability, making it difficult to meet the ever-increasing power demands and complex operating environments. Therefore, developing an oil-immersed transformer core with a reinforced oil-leakage-proof sealing layer is of significant practical importance. Utility Model Content

[0003] The purpose of this invention is to provide an oil-immersed transformer core with a reinforced oil-leakage-proof sealing layer to solve the problems mentioned in the background art.

[0004] The technical solution of this utility model is: an oil-immersed transformer core with an oil leakage-proof sealing layer reinforcement, comprising a core body, the core body including a core column and a matching yoke, the core column being covered with a wrapping layer, the top and bottom ends of the core body being covered with sealing end caps, the outer side of the sealing end caps being covered with slotted frames for positioning the core body, and a side support assembly that abuts against the side of the core body being fixed between the two slotted frames.

[0005] The effects achieved by the above components are as follows: through the working cooperation between the core body, the cladding layer, the side support assembly, the sealing end cap, and the slot frame, the core body provides the magnetic circuit foundation for the transformer; the cladding layer wraps around the outside of the core column of the core body, forming an outer circumferential seal; the sealing end cap provides end sealing from the top and bottom of the core body; the slot frame is snapped onto the outside of the sealing end cap to achieve positioning of the core body; the side support assembly is fixed between the two slot frames and abuts against the side of the core body, providing support and fixation for the core body from the side; the coordinated action of each component achieves the purpose of all-round sealing and stable support for the core body, increasing the overall sealing performance and structural stability of the core, and improving the ability to prevent oil leakage.

[0006] Preferably, the sealing end cap and the iron core body are sealed with sealant, and a rubber sealing ring is provided on the contact surface between the sealing end cap and the iron core body.

[0007] The effect achieved by the above components is as follows: through the working cooperation between the sealing end cap, the iron core body, the sealant and the rubber sealing ring, when the sealing end cap contacts the iron core body, the sealant can fill the tiny gaps between the contact surfaces of the two, and the rubber sealing ring undergoes elastic deformation under the pressure of the sealing end cap, tightly fitting between the contact surfaces to form a double sealing barrier, thereby achieving the purpose of enhancing the sealing performance between the sealing end cap and the iron core body and improving the oil leakage prevention effect at the end.

[0008] Preferably, the wrapping layer includes an oil-resistant elastic sealing layer, a flexible support barrier layer, and an oil-resistant sealant layer arranged sequentially from the inside out.

[0009] The effects achieved by the above components are as follows: through the working cooperation between the oil-resistant elastic sealing layer, the flexible support barrier layer, and the oil-resistant sealant layer included in the wrapping layer, the oil-resistant elastic sealing layer directly contacts the iron core column of the iron core body. With its oil resistance and elasticity, it initially blocks oil penetration and adapts to the slight deformation of the iron core. The flexible support barrier layer plays a supporting role in the middle, maintaining the structural shape of the wrapping layer and further blocking oil. The oil-resistant sealant layer is on the outermost side, using its sealing properties to fill any gaps that may exist in the outer layer. This achieves the purpose of improving the overall oil leakage prevention performance of the wrapping layer and improving the sealing reliability of the outer periphery of the iron core column.

[0010] Preferably, the side support assembly includes a clamping plate that abuts against the side of the iron core column, the clamping plate has end plates at both ends that are connected to the slot frame, and the outer side of the clamping plate has a protrusion for reinforcing the structure.

[0011] The effects achieved by the above components are as follows: through the working cooperation between the clamping plate, end plate, protrusion, and slot frame of the side support assembly, the end plate connects and fixes the clamping plate to the slot frame, so that the clamping plate can stably abut against the side of the iron core column of the iron core body, forming a lateral support force on the iron core body. The protrusion enhances the structural strength of the clamping plate and prevents the clamping plate from deforming during the support process. This achieves the purpose of strengthening the side support effect of the iron core body, improving the overall structural stability of the iron core, and reducing the impact of vibration during operation on the sealing structure.

[0012] This utility model provides an oil-immersed transformer core with an improved oil leakage-proof sealing layer, which has the following improvements and advantages compared with the prior art:

[0013] Firstly, this utility model utilizes the working cooperation between the core body, the cladding layer, the side support assembly, the sealing end cap, and the slot frame. The core body provides the magnetic circuit foundation for the transformer. The cladding layer wraps around the outside of the core column of the core body, forming an outer circumferential seal. The sealing end cap provides end sealing from the top and bottom of the core body. The slot frame is snapped onto the outside of the sealing end cap to position the core body. The side support assembly is fixed between two slot frames and abuts against the side of the core body, providing support and fixation from the side. The coordinated action of these components achieves the purpose of all-round sealing and stable support for the core body, increasing the overall sealing performance and structural stability of the core, and improving the oil leakage prevention capability.

[0014] Secondly, this utility model utilizes the working cooperation between the oil-resistant elastic sealing layer, the flexible support barrier layer, and the oil-resistant sealant layer included in the wrapping layer. The oil-resistant elastic sealing layer directly contacts the iron core column of the iron core body. With its oil resistance and elasticity, it initially blocks oil penetration and adapts to the slight deformation of the iron core. The flexible support barrier layer plays a supporting role in the middle, maintaining the structural shape of the wrapping layer and further blocking oil. The oil-resistant sealant layer is on the outermost side, using its sealing properties to fill any gaps that may exist in the outer layer. This achieves the purpose of improving the overall oil leakage prevention performance of the wrapping layer and improving the sealing reliability of the outer periphery of the iron core column. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the assembled three-dimensional structure of this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Iron core body; 2. Sheathing layer; 3. Side support assembly; 31. Clamping plate; 32. End plate; 33. Protruding strip; 4. Sealing end cap; 5. Slot frame. Detailed Implementation

[0020] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0021] This utility model provides an improved oil-immersed transformer core with a reinforced oil-leakage-proof sealing layer. The technical solution of this utility model is as follows:

[0022] In embodiments of this utility model, such as Figures 1-2 As shown, an oil-immersed transformer core with an oil-leakage-resistant sealing layer is provided, including a core body 1, which includes a core column and a matching yoke. A wrapping layer 2 is provided on the outside of the core column. The wrapping layer 2 includes an oil-resistant elastic sealing layer, a flexible support barrier layer, and an oil-resistant sealant layer arranged sequentially from the inside to the outside. Through the working cooperation between the oil-resistant elastic sealing layer, the flexible support barrier layer, and the oil-resistant sealant layer included in the wrapping layer 2, the oil-resistant elastic sealing layer directly contacts the core column of the core body 1. With its oil resistance and elasticity, it initially blocks oil penetration and adapts to the small deformation of the core. The flexible support barrier layer plays a supporting role in the middle, maintaining the structural shape of the wrapping layer 2 and further blocking oil. The oil-resistant sealant layer is on the outermost side, and its sealing properties fill any gaps that may exist in the outer layer, thereby achieving the purpose of improving the overall oil-leakage-resistant performance of the wrapping layer 2.

[0023] Sealing end caps 4 are fitted at both the top and bottom of the iron core body 1. The sealing end caps 4 and the iron core body 1 are sealed with sealant, and rubber sealing rings are provided on the contact surfaces of the sealing end caps 4 and the iron core body 1. Through the working cooperation between the sealing end caps 4, the iron core body 1, the sealant, and the rubber sealing rings, when the sealing end caps 4 and the iron core body 1 come into contact, the sealant can fill the tiny gaps between the contact surfaces. Under the pressure of the sealing end caps 4, the rubber sealing rings undergo elastic deformation and tightly adhere to the contact surfaces, forming a double sealing barrier. This achieves the purpose of enhancing the sealing performance between the sealing end caps 4 and the iron core body 1. A slot frame 5 for positioning the iron core body 1 is fitted on the outer side of the sealing end caps 4. A side support assembly 3 is fixed between the slot frame 5, which abuts against the side of the iron core body 1. The side support assembly 3 includes a clamping plate 31 that abuts against the side of the iron core column. The clamping plate 31 has end plates 32 that are connected to the slot frame 5 at both ends. The clamping plate 31 has a protrusion 33 for reinforcing the structure on its outer side. Through the working cooperation between the clamping plate 31, end plates 32, protrusion 33 and slot frame 5 of the side support assembly 3, the end plates 32 connect and fix the clamping plate 31 to the slot frame 5, so that the clamping plate 31 can stably abut against the side of the iron core column of the iron core body 1, forming a lateral support force on the iron core body 1. The protrusion 33 enhances the structural strength of the clamping plate 31 and prevents the clamping plate 31 from deforming during the support process, thus achieving the purpose of strengthening the side support effect of the iron core body 1.

[0024] The working principle of the oil-immersed transformer core with an oil-leakage-resistant sealing layer reinforced by this utility model is as follows: Through the working cooperation between the core body 1, the wrapping layer 2, the side support assembly 3, the sealing end cover 4, and the slot frame 5, the core body 1 provides the magnetic circuit foundation for the transformer. Through the working cooperation between the oil-resistant elastic sealing layer, the flexible support barrier layer, and the oil-resistant sealant layer included in the wrapping layer 2, the oil-resistant elastic sealing layer directly contacts the core column of the core body 1. Due to its oil resistance and elasticity, it initially blocks oil penetration and adapts to the slight deformation of the core. The flexible support barrier layer plays a supporting role in the middle, maintaining the structural shape of the wrapping layer 2 and further blocking the oil. The oil-resistant sealant layer is on the outermost side, utilizing its sealing properties... The sealant fills any gaps that may exist in the outer layer, thereby improving the overall oil leakage prevention performance of the wrapping layer 2. The sealing end cap 4 seals the ends of the iron core body 1 from the top and bottom. When the sealing end cap 4 contacts the iron core body 1, the sealant can fill the tiny gaps between the contact surfaces. The rubber sealing ring undergoes elastic deformation under the pressure of the sealing end cap 4, tightly fitting between the contact surfaces to form a double sealing barrier, thereby enhancing the sealing performance between the sealing end cap 4 and the iron core body 1. The slot frame 5 is snapped onto the outside of the sealing end cap 4 to position the iron core body 1. The side support assembly 3 is fixed between the two slot frames 5 and abuts against the side of the iron core body 1, providing support and fixation for the iron core body 1 from the side.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil-immersed transformer core reinforced with an oil leakage-proof sealing layer, comprising a core body (1), wherein the core body (1) includes core columns and a suitable yoke, characterized in that: The outer side of the iron core column is covered with a wrapping layer (2), and the top and bottom ends of the iron core body (1) are covered with sealing end caps (4). The outer side of the sealing end cap (4) is covered with a slot frame (5) for positioning the iron core body (1). A side support assembly (3) that abuts against the side of the iron core body (1) is fixed between the two slot frames (5).

2. The oil-immersed transformer core with an oil-leakage-resistant sealing layer as described in claim 1, characterized in that: The sealing end cap (4) and the iron core body (1) are sealed with sealant, and a rubber sealing ring is provided on the contact surface between the sealing end cap (4) and the iron core body (1).

3. The oil-immersed transformer core with an oil-leakage-resistant sealing layer as described in claim 1, characterized in that: The wrapping layer (2) includes an oil-resistant elastic sealing layer, a flexible support barrier layer, and an oil-resistant sealant layer arranged sequentially from the inside out.

4. The oil-immersed transformer core with an oil-leakage-resistant sealing layer as described in claim 1, characterized in that: The side support assembly (3) includes a clamping plate (31) that abuts against the side of the iron core column. The clamping plate (31) has end plates (32) at both ends that are connected to the slot frame (5). The clamping plate (31) has a protrusion (33) on the outside for reinforcing the structure.

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