Multi-core stranded conductor full-transposition insulated aluminum flat wire for electric reactor

Abstract

The utility model relates to the technical field of cables, and discloses a multi-core stranded conductor full-transposition insulating aluminum flat wire for a reactor, which comprises an aluminum flat wire body, the aluminum flat wire body is composed of an outer protective layer, an insulating layer, a corona-resistant film layer, an inner protective layer, a wire core and a cushion core, the outer protective layer is arranged on the outermost layer of the aluminum flat wire body, and the insulating layer is arranged on the inner protective layer. The outer protective layer wraps the outer wall of the insulating layer, and the insulating layer wraps the outer wall of the corona-resistant film layer. According to the utility model, the insulating layer and the corona-resistant thin film layer are arranged, the insulating layer is made of grid belt insulating materials, the corona-resistant thin film layer is a polyimide insulating thin film layer containing nanoscale inorganic compounds, and the insulating layer is continuously lapped on the corona-resistant thin film layer in a multi-layer manner according to voltage grade requirements; the nano inorganic compound is introduced into the insulating material, so that the resistance of the insulating layer and the corona-resistant film layer to partial discharge degradation is increased, and the insulating material is relatively practical and suitable for wide popularization and application.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and in particular relates to a multi-core twisted conductor fully transposed insulated aluminum flat wire for a reactor. Background Art

[0002] A very strong electric field will be generated around a conductor carrying high voltage. If the electric field strength exceeds the breakdown strength of the gas or liquid medium around the conductor, the gas or liquid will be ionized, and severe local discharge will occur. This is what is commonly called the "corona phenomenon". It is generally manifested as frequent sounds under high-voltage lines and around high-voltage transmission and transformation equipment. The "corona phenomenon" also often occurs in uneven electric fields and in areas with high electric field intensity. The generation of the "corona phenomenon" will cause power loss and increase the temperature of reactors, transformers and transmission equipment. It will also interfere with nearby radio and communication lines, which may seriously affect the safe operation of transmission and transformation lines.

[0003] In view of this, the utility model is proposed to solve the above problems by providing a multi-core stranded conductor fully transposed insulated aluminum flat wire for a reactor. Utility Model Content

[0004] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0005] A multi-core twisted conductor fully transposed insulated aluminum flat wire for a reactor comprises an aluminum flat wire body, wherein the aluminum flat wire body consists of an outer protective layer, an insulating layer, a corona-resistant film layer, an inner protective layer, a wire core and a buffer pad core, wherein the outer protective layer is arranged on the outermost layer of the aluminum flat wire body, the outer protective layer is wrapped on the outer wall of the insulating layer, the insulating layer is wrapped on the outer wall of the corona-resistant film layer, the corona-resistant film layer is wrapped on the outer wall of the inner protective layer, the buffer pad core is fixed on the inner wall of the inner protective layer, the wire core is arranged on the inner side of the inner protective layer, one side of the buffer pad core is provided with equidistantly distributed through holes, and the wire core end is fixed on the inner wall of the through hole.

[0006] As a preferred embodiment of the utility model, a cavity is arranged inside the buffer core, and the wire cores are arranged in multiple groups, and the multiple groups of wire cores are twisted and arranged in the cavity.

[0007] As a preferred embodiment of the utility model, the outer protective layer is a wear-resistant layer made of high-strength fiber material, and the inner wall of the outer protective layer is fixedly arranged with the outer wall of the insulating layer.

[0008] As a preferred embodiment of the utility model, the insulating layer is made of a mesh tape insulating material, and the insulating layer is continuously wrapped in multiple layers on the corona-resistant film layer according to voltage level requirements.

[0009] As a preferred embodiment of the utility model, the corona-resistant film layer is a polyimide insulating film layer containing nano-scale inorganic compounds, and the inner wall of the corona-resistant film layer is fixedly connected to the outer wall of the inner protective layer.

[0010] As a preferred embodiment of the utility model, the inner protective layer is made of high-elastic spray-bonded cotton, and the buffer pad core is made of high-temperature resistant rubber material.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model has an insulating layer and a corona-resistant film layer, and the insulating layer is made of a mesh tape insulating material, the corona-resistant film layer is a polyimide insulating film layer containing nanometer-level inorganic compounds, and the insulating layer is continuously wrapped on the corona-resistant film layer in multiple layers according to voltage grade requirements, and the nanometer-level inorganic compounds are introduced into the insulating material, thereby increasing the resistance of the insulating layer and the corona-resistant film layer to local discharge degradation, and the nanometer-level inorganic compound is a material with good thermal stability, which is conducive to the rapid dissipation of heat by diffusing charge accumulation, effectively playing a role of resisting high-frequency pulse voltage and corona, and can reduce the temperature rise of transformers and reactors. By setting an inner protective layer made of high-elasticity spray-coated cotton, the aluminum flat wire body has the performance of torsion resistance, and by setting a buffer pad core made of high-temperature-resistant rubber material, the torsion resistance is enhanced, and the high-temperature resistance of the aluminum flat wire body is also improved to prevent damage caused by excessive temperature.

[0013] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In the attached picture:

[0015] Figure 1 This is a schematic diagram of the partial structure of the aluminum flat wire body of the utility model;

[0016] Figure 2 This is a schematic diagram of the side view of the aluminum flat wire body of the utility model;

[0017] Figure 3 This is a schematic diagram of the main structure of the aluminum flat wire body of the utility model.

[0018] In the figure: 1. Aluminum flat wire body; 2. Outer protective layer; 3. Insulation layer; 4. Corona-resistant film layer; 5. Inner protective layer; 6. Wire core; 7. Buffer pad core. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0020] like Figures 1 to 3 Shown

[0021] A multi-core stranded conductor fully transposed insulated aluminum flat wire for a reactor comprises an aluminum flat wire body 1, wherein the aluminum flat wire body 1 is composed of an outer protective layer 2, an insulating layer 3, a corona-resistant film layer 4, an inner protective layer 5, a wire core 6 and a buffer pad core 7, wherein the outer protective layer 2 is arranged on the outermost layer of the aluminum flat wire body 1, the outer protective layer 2 is wrapped on the outer wall of the insulating layer 3, the insulating layer 3 is wrapped on the outer wall of the corona-resistant film layer 4, the insulating layer 3 is made of a mesh tape insulating material, the insulating layer 3 is continuously wrapped in multiple layers on the corona-resistant film layer 4 according to voltage level requirements, the corona-resistant film layer 4 is a polyimide insulating film layer containing nano-scale inorganic compounds, and the nano-inorganic compounds are introduced into the insulating film layer 4. The insulating material increases the resistance of the insulating layer 3 and the corona-resistant film layer 4 to local discharge degradation, and this nano-scale inorganic compound is a material with good thermal stability, which is conducive to the diffusion of charge accumulation and the rapid dissipation of heat, and effectively plays a role in resisting high-frequency pulse voltage and corona, and can reduce the temperature rise of transformers and reactors. The inner wall of the corona-resistant film layer 4 is fixedly connected to the outer wall of the inner protective layer 5, the corona-resistant film layer 4 is wrapped and arranged on the outer wall of the inner protective layer 5, the buffer pad core 7 is fixedly arranged on the inner wall of the inner protective layer 5, the core 6 is arranged on the inner side of the inner protective layer 5, and one side of the buffer pad core 7 is provided with equidistantly distributed through holes, and the end of the core 6 is fixedly arranged on the inner wall of the through hole.

[0022] In a specific embodiment, a cavity is provided on the inner side of the buffer core 7, a plurality of groups of wire cores 6 are provided, and the plurality of groups of wire cores 6 are twisted and arranged in the cavity, the outer protective layer 2 is a wear-resistant layer made of high-strength fiber material, and the outer protective layer 2 made of high-strength fiber material can improve the wear resistance of the aluminum flat wire body 1, the inner wall of the outer protective layer 2 and the outer wall of the insulating layer 3 are fixedly arranged, the inner protective layer 5 is made of high-elastic spray-coated cotton, and the inner protective layer 5 made of high-elastic spray-coated cotton is provided, so that the aluminum flat wire body 1 has the performance of twisting resistance, and the buffer core 7 is made of high-temperature resistant rubber material, and the buffer core 7 made of high-temperature resistant rubber material is provided, and the twisting resistance is enhanced, and the high-temperature resistance of the aluminum flat wire body 1 is also improved to prevent damage caused by excessive temperature.

[0023] The implementation principle of the fully transposed insulated aluminum flat wire for the reactor of this embodiment is as follows:

[0024] During specific use, an insulating layer 3 and a corona-resistant film layer 4 are provided, and the insulating layer 3 is made of a mesh tape insulating material, and the corona-resistant film layer 4 is a polyimide insulating film layer containing nano-scale inorganic compounds. At the same time, the insulating layer 3 is continuously wrapped on the corona-resistant film layer 4 in multiple layers according to the voltage level requirements, and the nano-scale inorganic compounds are introduced into the insulating material, thereby increasing the resistance of the insulating layer 3 and the corona-resistant film layer 4 to local discharge degradation. Moreover, this nano-scale inorganic compound is a material with good thermal stability, which is conducive to the diffusion of charge accumulation and the rapid dissipation of heat, and effectively plays a role in resisting high-frequency pulse voltage and corona, and can reduce the temperature rise of transformers and reactors. Then, the outer protective layer 2 made of high-strength fiber material is provided, and the wear resistance of the aluminum flat wire body 1 can be improved. The inner protective layer 5 made of high-elastic spray-coated cotton is provided, so that the aluminum flat wire body 1 has the performance of torsion resistance. The buffer pad core 7 made of high-temperature resistant rubber material is provided, and the torsion resistance is enhanced while the high-temperature resistance of the aluminum flat wire body 1 is improved to prevent damage caused by excessive temperature.

Claims

1. A multi-core stranded conductor fully transposed insulated aluminum flat wire for a reactor, comprising an aluminum flat wire body (1), It is characterized in that The aluminum flat wire body (1) is composed of an outer protective layer (2), an insulating layer (3), a corona-resistant film layer (4), an inner protective layer (5), a wire core (6), and a buffer core (7); the outer protective layer (2) is arranged on the outermost layer of the aluminum flat wire body (1); the outer protective layer (2) is wrapped and arranged on the outer wall of the insulating layer (3); the insulating layer (3) is wrapped and arranged on the outer wall of the corona-resistant film layer (4); the corona-resistant film layer (4) is wrapped and arranged on the outer wall of the inner protective layer (5); the buffer core (7) is fixedly arranged on the inner wall of the inner protective layer (5); the wire core (6) is arranged on the inner side of the inner protective layer (5); one side of the buffer core (7) is provided with through holes distributed at equal intervals, and the end of the wire core (6) is fixedly arranged on the inner wall of the through hole.

2. The multi-core stranded conductor fully transposed insulated aluminum flat wire for reactor according to claim 1, It is characterized in that A cavity is provided inside the buffer core (7), and the wire cores (6) are provided in multiple groups, and the multiple groups of wire cores (6) are twisted and arranged in the cavity.

3. The multi-core stranded conductor fully transposed insulated aluminum flat wire for reactor according to claim 1, It is characterized in that The outer protective layer (2) is a wear-resistant layer made of high-strength fiber material, and the inner wall of the outer protective layer (2) and the outer wall of the insulating layer (3) are fixedly arranged.

4. The multi-core stranded conductor fully transposed insulated aluminum flat wire for reactor according to claim 1, It is characterized in that The insulating layer (3) is made of a mesh tape insulating material, and the insulating layer (3) is continuously wrapped in multiple layers on the corona-resistant film layer (4) according to voltage level requirements.

5. The multi-core stranded conductor fully transposed insulated aluminum flat wire for reactor according to claim 1, It is characterized in that The corona-resistant film layer (4) is a polyimide insulating film layer containing nano-scale inorganic compounds, and the inner wall of the corona-resistant film layer (4) is fixedly connected to the outer wall of the inner protective layer (5).

6. The multi-core stranded conductor fully transposed insulated aluminum flat wire for reactor according to claim 1, It is characterized in that The inner protective layer (5) is made of high-elasticity spray-bonded cotton, and the buffer pad core (7) is made of high-temperature resistant rubber material.

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