CN115410809A - A light dry-type air-core reactor and its manufacturing method - Google Patents

Abstract

A light-weight dry air-core reactor, comprising: the winding structure comprises a bus frame, a winding layer and an insulating cushion block, wherein the winding layer is of a cylindrical structure; the bus frames are respectively arranged at the upper end and the lower end of the winding layer, and the two bus frames at the upper end and the lower end are connected through a fastening structure and fasten the winding layer; an insulating cushion block is arranged between the bus frame and the winding layer; the fastening structure is an insulating pull rod structure or an insulating pull belt structure. The reactor adopts a dry winding impregnation light structure, so that the manufacturing cost of the dry type air reactor is effectively reduced, and the production efficiency of products is improved. A supporting strip structure exists between each winding layer of the reactor, and the reactor has good heat dissipation performance; the aluminum stranded wire or the transposed aluminum conductor is adopted, so that the application range is wider; the multi-strand composite wire or transposition wire is adopted for winding, so that the failure rate of the product is lower.

Description

A light dry-type air-core reactor and its manufacturing method

technical field

The invention belongs to the technical field of reactors, and in particular relates to a light dry-type air-core reactor and a manufacturing method thereof.

Background technique

Dry-type air-core reactor products are one of the important products in the grid power supply and distribution system. They are mainly used to filter out the harmonic currents of the grid, limit the level of short-circuit current of the line, compensate the reactive capacity of the line, and smooth the waves. In the international market, dry-type air-core reactor products are mainly divided into two types: epoxy-encapsulated heavy-duty structure and dry-wound impregnated light-weight structure. Each structure has its own advantages and disadvantages. Among them, the light structure has the advantages of good heat dissipation performance and less material consumption. Among the AC and DC reactor products, the light dry-type air-core reactor has a greater advantage.

At present, no matter in the international market or in the domestic market, dry-type air-core reactors with light structures are very competitive. However, dry-type air-core reactors manufactured according to conventional methods still have large sizes and high costs. Disadvantages, and the manufacturing process is many and time-consuming, especially in terms of the electrical parameters of the reactor, it will also change the volume and weight of the reactor, and there are also phenomena such as excessive local temperature and inter-turn insulation breakdown, which can easily cause serious damage. security incident.

Chinese patent (CN113113216A) discloses a light-duty reactor, which includes a plurality of coaxially arranged envelopes, the envelopes are bonded by dipped insulating layers, and the upper and lower ends of the envelopes are respectively provided with star frames , each star frame is respectively provided with a connecting terminal, a pillar is arranged under the star frame at the lower end, and a base is arranged under the pillar. It can make the package more stable and firm, and greatly reduce the weight of the reactor. However, the measure of reducing the weight of the reactor product by removing the traditional reactor strut structure in this invention has great disadvantages and hidden dangers. Because the struts between the reactor encapsulation layers play the role of heat dissipation channels in the product structure, without the strut structure, the heat in the reactor wires cannot be dissipated smoothly through the channels, and the product will easily experience local overheating, thus It further causes phenomena such as accelerated thermal aging of insulation and breakdown of inter-turn insulation. This patent applies only to small reactor coils that generate less heat.

Chinese patent (CN114582605A) discloses an open current-limiting reactor and its manufacturing method, which includes a winding and a coil clamping device. The winding includes a plurality of insulating plates and coils, and the insulating plates are provided with a plurality of slots for accommodating the coils. , the winding is connected to the coil clamping device to clamp and fix the winding. The coil clamping device includes an upper star frame, a lower star frame and an insulating pull rod. The upper star frame and the lower star frame are installed on the upper and lower ends of the winding respectively. , The upper star frame and the lower star frame are connected by insulating tie rods. This method completes the processing of the reactor through five steps of insulating plate processing, tire erection, winding, assembly, and varnish dipping. It has fewer processing steps, reduced overall weight and size, and enhanced the heat dissipation capacity of the reactor. However, the patented coil is wound with bare duralumin flat wire, and the wire is fixed with a sawtooth insulating plate. There is no insulating film structure on the wire, and the inter-turn insulation is only separated by the sawtooth of the insulating plate for insulation. The safety of the inter-turn insulation of the wire is very low. Because under the impulse voltage, the surface flashover discharge easily occurs between the wires of the coil structure. The wire wrapped with insulating film is protected by multi-layer insulating film under the impact voltage, and each insulating film can withstand a certain value of impulse voltage. Therefore, under normal conditions, the initial discharge voltage value between turns of the above-mentioned patent wire is smaller than that of the coil wrapped with insulating film material. In addition, due to the processing limitations of the serrated insulating plate mentioned in the patent, when the inductance value of the reactor is large, the number of turns of the coil needs to be hundreds or thousands of turns, and the patent involves that the coil cannot be produced in the factory. Therefore, this structural coil is only suitable for products with small inductance, limited coil turns and low product insulation requirements.

Contents of the invention

In order to solve the deficiencies in the prior art, the object of the present invention is to provide a light-weight dry-type air-core reactor and its manufacturing method. cost and improve product productivity.

The present invention adopts following technical scheme:

A light-duty dry-type air-core reactor, which includes: a busbar, a winding layer and an insulating pad, the winding layer is in a cylindrical structure; the busbars are respectively arranged at the upper and lower ends of the winding layer, and the upper and lower ends The two bus frames are connected by a fastening structure, and the winding layer is fastened; an insulating spacer is arranged between the bus frame and the winding layer; the fastening structure is an insulating pull rod structure or an insulating pull tape structure.

As a preferred embodiment of the present invention, the winding layer includes a reactor coil, the reactor coil is made of aluminum stranded wire or transposed aluminum wire, and 2 to 3 layers of insulating film are wrapped on it. The outermost side includes a glass cloth tape, and the thickness of the glass cloth tape is 0.1 mm to 0.3 mm.

As a preferred embodiment of the present invention, the wire is formed by twisting or transposing aluminum wires with small diameters, and the single-strand aluminum wire is wrapped with one or more layers of insulating film.

As a preferred embodiment of the present invention, the insulating film is made of polyester film or polyimide film.

As a preferred embodiment of the present invention, when the fastening structure is an insulating tie rod, it includes a tie-rod upper PZ bus frame, a tie-rod winding layer, a tie-rod lower PZ bus frame and a tie-rod insulating support.

As a preferred embodiment of the present invention, when the fastening structure is an insulating drawstring, it includes a drawstring type upper PZ junction frame, a pull strap type winding layer, a pull strap type lower PZ junction frame and a pull strap type insulating support.

As a preferred embodiment of the present invention, the rod-type winding layer is pulled in and fixed through the insulating rod at the boom and the insulating rod between the booms, and the insulating rod at the boom and the insulating rod between the booms are respectively passed through the insulating pad at the boom. The block and the insulating spacer between the booms are fixed on the tie rod type winding layer.

As a preferred embodiment of the present invention, the tie-rod upper PZ junction frame, the tie-rod winding layer and the tie-rod lower PZ junction frame are arranged above the tie-rod insulating support.

As a preferred embodiment of the present invention, the drawstring-type winding layers are tightened and fixed by latitude-free binding straps, and the upper end of the latitude-free binding straps is fixed on the drawstring-type On both sides of the boom of the upper Mizi junction frame, on the round aluminum column of the drawstring type upper boom, the lower end is fixed on both sides of the drawstring type lower boom of the Mizi junction frame through the drawstring type lower boom and the winding interlayer insulating spacer The pull-strap type lower boom installed in the later stage is adjusted on the oval aluminum column.

As a preferred embodiment of the present invention, the pull-strap type upper PZ junction frame, the pull-tab type winding layer and the pull-tab type lower PZ junction frame are arranged above the pull-tab type insulating support.

A method for manufacturing a lightweight dry-type air-core reactor as described above, characterized in that:

The manufacturing method comprises the following steps:

Step 1, directly wind the aluminum stranded wire or the transposed aluminum wire on the fixed size winding mold, and wind the winding layer;

Step 2. After the winding of each winding layer is completed, directly use the compression tooling to compress each winding layer as a whole. After the compression pressure reaches the preset value, install the insulating tie rod between the booms or the weft-free binding tape to each winding layer. to fix;

Step 3. Immerse each winding layer equipped with compression tooling and tensioning structure in the insulating paint tank for varnish impregnation. After varnish immersion, take out each winding layer and send it to a drying furnace for drying and curing ;

Step 4: Transport the dried and solidified winding layer out of the drying furnace, remove the compacting tool after cooling, and make the wire head, coil finishing, and the coil surface is sprayed with primer, topcoat and RTV-II anti-ultraviolet paint. final shape.

As a preferred embodiment of the present invention, in step 1, glass cloth is laid on the winding tire to protect the wires, and a crimping tool is provided.

As a preferred embodiment of the present invention, in step 3, the winding layer is dripped with paint for 0.5 to 1 hour after the paint dipping is completed, and then sent to a drying furnace for drying and curing.

Compared with prior art, the beneficial effect of the present invention is:

(1) There is a strut structure between each winding layer of the light-weight reactor product of this patent. The product has good heat dissipation channels and heat dissipation conditions, and is not only suitable for small-capacity reactor products, but also suitable for large-capacity reactor product design. At the same time, by adjusting the width of the struts in the product design, the overall heat dissipation system of the coil can be adjusted to realize the design of optimal heat dissipation conditions for coils of different sizes.

(2) The light-duty reactor product of this patent adopts aluminum stranded wire or transposed aluminum wire wrapped together by glass cloth and insulating film. The product has a large insulation safety margin between turns and is suitable for low, medium, high, ultra-high, and ultra-high voltage systems. Reactor product design. In addition, the product structure of the patented light reactor is not limited by related accessories, and can be applied to the design of reactors with larger inductance values.

(3) Traditional epoxy-encapsulated products tend to have gaps at the wire outlets of each encapsulation layer. In order to prevent rainwater from being enclosed, a rainproof cap is usually arranged above the reactor product. However, the light-duty product of this patent adopts the overall dipping (process), without risk of gaps, and does not need to be equipped with a rainproof cap.

(4) Affected by the process conditions of light-duty reactor products, the coil of this patented light-duty product can only be wound with multi-strand stranded wires or transposed wires. There is no single wire winding form, and there is no risk of wire root breakage. The failure rate of the product is low. For large-capacity reactor products, multi-strand transposed aluminum wires are used for winding, the product loss is small, the insulation margin between wire turns is large, and the product performance is good.

(5) The wires of each layer of traditional epoxy-encapsulated products are wrapped by thicker epoxy glass yarn. Since the glass yarn is wound in a "rope" shape during the winding process, in order to achieve a relatively dense requirement in the process, a large amount of wrapping yarn is required, and the overall weight of the coil is relatively heavy. The wire and surface of this patented light product are wrapped with glass fiber tape with high warp and weft density, and the whole coil is dipped and cured after the winding is completed. The overall weight of the coil is more than 30% lighter than that of the encapsulated product. In addition, under the same technical conditions, the number of booms and bottom support insulators required for light products is less, which is more conducive to product loss control and earthquake resistance design. In the flexible DC transmission project of offshore wind power projects, the lightweight scheme is of great significance for the lightweight design of the entire offshore platform.

(6) Under the same parameter conditions, since the heat dissipation channel form and structure of the epoxy-encapsulated product and the light-duty solution product are the same, the wire consumption of the two solutions is basically the same. That is to say, the main reason why the coil of the light-duty scheme is lighter than the encapsulation scheme is mainly in the weight of the epoxy encapsulation. The insulating layer wrapped outside the wire of the light product of this patent is thinner than that of the encapsulated product, so during the operation of the product, the heat dissipation performance of the wire is better than that of the encapsulated product.

(7) Under the same technical conditions, the outer diameter of the light product of this patent is smaller than that of the encapsulated product. And the larger the capacity of the reactor product, the more obvious the size advantage of the light solution product. For some equipment installation sites with limited land area, reducing the size of the reactor can effectively reduce the antimagnetic range of the product, thereby reducing the overall footprint of the reactor.

(8) Under the same parameter conditions, the price of the patented light product is lower than that of the encapsulated product.

Description of drawings

Figure 1 is a schematic diagram of the finished product of the insulating tie rod fastening type light reactor;

Figure 2 is an enlarged view of the upper part of the coil of the light-duty reactor with fastening insulation rods;

Figure 3 is a schematic diagram of the finished light-duty reactor fastened by insulating pull straps;

Fig. 4 Enlarged view of the upper part of the coil of the light-duty reactor fastened by insulating pull straps;

Fig. 5 Enlarged view of the lower part of the coil of the light-duty reactor fastened by insulating pull straps;

Figure 6 is an enlarged view of the insulating pads used at the connection between each enveloping layer of the insulating tie-rod fastening type light reactor and the boom;

Figure 7 is an enlarged view of the ventilation strip used between the winding layers of the insulating tie rod fastening type light reactor;

Figure 8 is an enlarged view of the insulating tie rod used to compress the winding layer of the insulating tie rod fastening type light reactor;

Fig. 9 is a three-view view of the L-shaped support plate used to connect the boom and the insulating rod in the light reactor fastened by the insulating rod;

Figure 10 is an enlarged view of the insulating pads used between the booms of the insulating tie-rod fastening type light-duty reactor

Fig. 11 is an enlarged view of the insulating spacer used at the connection between the encapsulation layer of the light-duty reactor fastened by insulating pull straps and the boom;

Explanation of reference signs:

1-Tie rod type upper Mizi junction frame; 2-Tie rod type winding layer; 3-Tie rod type lower Mi word junction frame; 4-Tie rod type insulating support; 5-Insulated tie rod at the boom; -Tie rod type single winding layer; 8-Tie rod type winding layer ventilation strip; 9-Insulation rod between booms; 10-Insulation spacer between booms; 11-Insulation spacer at the boom; 13-Tie-type winding layer; 14-Tie-type lower meter-shaped confluence frame; 15-Tie-type insulation pillar; 16-Tie-type transition support; 17-Tie-type upper outlet terminal board; 18-The round aluminum column of the upper boom of the pull-belt type; 19-The no-weft binding strap; 20-The insulating spacer between the upper boom of the pull-belt type and the winding layer; Elliptical adjustable aluminum column for the boom; 23-strap-type lower boom and insulation spacer between winding layers.

Detailed ways

The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.

Fig. 1 and Fig. 3 are the schematic diagrams of the finished products of the insulating tie-rod fastening type light-duty reactor and the finished insulating pull-band fastening type light-duty reactor respectively. As shown in Fig. 1 and Fig. 3, a light dry-type air-core reactor of the present invention Including busbars, winding layers and insulating pads.

The winding layer has a cylindrical structure, and the busbars are respectively arranged at the upper and lower ends of the winding layer. The two busbars at the upper and lower ends are connected by a fastening structure, and the winding layer is fastened. There are insulating pads, and the fastening structure is an insulating pull rod structure or an insulating pull tape structure.

The winding layer includes a reactor coil, which is made of aluminum stranded wire or transposed aluminum wire, wrapped with 2 to 3 layers of insulating film, and its outermost side includes a glass cloth tape, the thickness of which is It is 0.1mm～0.3mm, and the wire is made of twisted or twisted aluminum wires with small diameters, and the single-strand aluminum wire is wrapped with one or more layers of insulating film.

The insulating film is made of polyester film or polyimide film.

As shown in Fig. 1, Fig. 2 and Fig. 6 to Fig. 10, when the fastening structure is an insulating tie rod, it includes a tie rod-type upper Pozi junction frame 1, a tie-rod type winding layer 2, a tie-rod type lower Pozi-shaped junction frame 3 and Tie-rod insulating support 4.

The rod-type winding layer 2 includes several rod-type single winding layers 7, the diameters of several rod-type single winding layers 7 are successively reduced, and they are evenly arranged according to the concentric axis, and every two adjacent rod-type single winding layers 7 A tie-rod type inter-winding ventilation strip 8 is arranged between them.

The tie-rod winding layer 2 is pulled in and fixed through the insulating tie rod 5 at the boom and the insulating tie rod 9 between the booms. The spacer 10 is fixed on the pull rod type winding layer 2, and the insulating pull rod 5 at the boom and the insulating spacer 11 at the boom are connected through an L-shaped support plate 6 . The tie-rod upper Pozi junction frame 1 , the tie-rod winding layer 2 and the tie-rod lower Pozi junction frame 3 are arranged above the tie-rod insulating support 4 .

The insulating tie rod is an epoxy tie rod, and its two ends are respectively provided with metal sleeves, and nuts, spring washers and flat washers are distributed sequentially from the metal sleeves at the ends to the middle.

As shown in Fig. 3 to Fig. 5 and Fig. 11, when the fastening structure is an insulating drawstring, it includes a drawstring-type upper Pozi junction frame 12, a drawstring-type winding layer 13, and a drawstring-type lower Pozi-shaped junction frame 14 And the drawstring type insulating support 15.

The drawstring winding layer 13 is tightened and fixed by the latitude-free binding belt 19, and the upper end of the latitude-free binding belt 19 is fixed on the drawstring-type upper Mizi junction frame 12 boom through the drawstring-type upper boom and the winding interlayer insulating spacer 20. The upper ends of the round aluminum columns 18 of the pull-belt type upper boom and the lower end are fixed on the pull-belt-type lower Mizi confluence frame 14 through the pull-belt-type lower boom and the winding interlayer insulating spacer 23. On the elliptical adjustable aluminum column 22 of the belt type lower boom. The pull-tie type upper Mi-shaped bus frame 12, the pull-tape type winding layer 13 and the pull-tie type lower Mi-shaped junction frame 14 are arranged above the pull-tab type insulating support 15, and the draw-tie type insulating support 15 is provided with a pull-tab type Transition support 16. The end of the drawstring-type upper Mizi junction frame 12 is also provided with a drawstring-type upper outlet terminal plate 17 , and the end of the drawstring-type lower Mizi junction frame 14 is also provided with a drawstring-type lower outlet terminal plate 21 .

A method of manufacturing the light-weight dry-type air-core reactor as described above, the manufacturing method includes the following steps:

Step 1, directly wind the aluminum stranded wire or the transposed aluminum wire on the fixed size winding mold, and wind the winding layer;

Step 2. After the winding of each winding layer is completed, directly use the compression tooling to compress each winding layer as a whole. After the compression pressure reaches the preset value, install the insulating pull rod 9 between the booms or the weft-free binding tape 19 pairs of each The winding layer is fixed;

Step 3. Immerse each winding layer equipped with compression tooling and tensioning structure in the insulating paint tank for varnish impregnation. After varnish immersion, take out each winding layer and send it to a drying furnace for drying and curing ;

Step 4: Transport the dried and solidified winding layer out of the drying furnace, remove the compacting tool after cooling, and make the wire head, coil finishing, and the coil surface is sprayed with primer, topcoat and RTV-II anti-ultraviolet paint. final shape.

In step 1, glass cloth is laid on the winding mold to protect the wires, and crimping tools are provided.

In step 3, the winding layer is dripped with paint for 0.5 to 1 hour after the paint dipping is completed, and then sent to a drying oven for drying and curing.

Compared with prior art, the beneficial effect of the present invention is:

(1) There is a strut structure between each winding layer of the light-weight reactor product of this patent. The product has good heat dissipation channels and heat dissipation conditions, and is not only suitable for small-capacity reactor products, but also suitable for large-capacity reactor product design. At the same time, by adjusting the width of the struts in the product design, the overall heat dissipation system of the coil can be adjusted to realize the design of optimal heat dissipation conditions for coils of different sizes.

(2) The light-duty reactor product of this patent adopts aluminum stranded wire or transposed aluminum wire wrapped together by glass cloth and insulating film. The product has a large insulation safety margin between turns and is suitable for low, medium, high, ultra-high, and ultra-high voltage systems. Reactor product design. In addition, the product structure of the patented light reactor is not limited by related accessories, and can be applied to the design of reactors with larger inductance values.

(3) Traditional epoxy-encapsulated products tend to have gaps at the wire outlets of each encapsulation layer. In order to prevent rainwater from being enclosed, a rainproof cap is usually arranged above the reactor product. However, the light-duty product of this patent adopts the overall dipping (process), without risk of gaps, and does not need to be equipped with a rainproof cap.

(4) Affected by the process conditions of light-duty reactor products, the coil of this patented light-duty product can only be wound with multi-strand stranded wires or transposed wires. There is no single wire winding form, and there is no risk of wire root breakage. The failure rate of the product is low. For large-capacity reactor products, multi-strand transposed aluminum wires are used for winding, the product loss is small, the insulation margin between wire turns is large, and the product performance is good.

(5) The wires of each layer of traditional epoxy-encapsulated products are wrapped by thicker epoxy glass yarn. Since the glass yarn is wound in a "rope" shape during the winding process, in order to achieve a relatively dense requirement in the process, a large amount of wrapping yarn is required, and the overall weight of the coil is relatively heavy. The wire and surface of this patented light product are wrapped with glass fiber tape with high warp and weft density, and the whole coil is dipped and cured after the winding is completed. The overall weight of the coil is more than 30% lighter than that of the encapsulated product. In addition, under the same technical conditions, the number of booms and bottom support insulators required for light products is less, which is more conducive to product loss control and earthquake resistance design. In the flexible DC transmission project of offshore wind power projects, the lightweight scheme is of great significance for the lightweight design of the entire offshore platform.

(6) Under the same parameter conditions, since the heat dissipation channel form and structure of the epoxy-encapsulated product and the light-duty solution product are the same, the wire consumption of the two solutions is basically the same. That is to say, the main reason why the coil of the light-duty scheme is lighter than the encapsulation scheme is mainly in the weight of the epoxy encapsulation. The insulating layer wrapped outside the wire of the light product of this patent is thinner than that of the encapsulated product, so during the operation of the product, the heat dissipation performance of the wire is better than that of the encapsulated product.

(7) Under the same technical conditions, the outer diameter of the light product of this patent is smaller than that of the encapsulated product. And the larger the capacity of the reactor product, the more obvious the size advantage of the light solution product. For some equipment installation sites with limited land area, reducing the size of the reactor can effectively reduce the antimagnetic range of the product, thereby reducing the overall footprint of the reactor.

(8) Under the same parameter conditions, the price of the patented light product is lower than that of the encapsulated product.

The applicant of the present invention has made a detailed description and description of the implementation examples of the present invention in conjunction with the accompanying drawings, but those skilled in the art should understand that the above implementation examples are only preferred implementations of the present invention, and the detailed description is only to help readers better To understand the spirit of the present invention rather than limit the protection scope of the present invention, on the contrary, any improvement or modification made based on the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A light-duty dry-type air-core reactor, comprising: a busbar, a winding layer and an insulating spacer, characterized in that: The winding layer has a cylindrical structure; The busbars are respectively arranged at the upper and lower ends of the winding layer, and the two busbars at the upper and lower ends are connected by a fastening structure, and fasten the winding layer; An insulating spacer is provided between the busbar and the winding layer; The fastening structure is an insulating pull rod structure or an insulating pull tape structure. 2. A light dry-type air-core reactor according to claim 1, characterized in that: The winding layer includes a reactor coil, and the reactor coil is made of aluminum stranded wire or transposed aluminum wire, wrapped with 2 to 3 layers of insulating film, and the outermost side includes a glass cloth tape, a glass cloth tape The thickness is 0.1mm ~ 0.3mm; The wire is formed by twisting or twisting aluminum wires with small diameters, and the single-strand aluminum wire is wrapped with one or more layers of insulating film. 3. A light dry-type air-core reactor according to claim 2, characterized in that: The insulating film is made of polyester film or polyimide film. 4. A light dry-type air-core reactor according to claim 1, characterized in that: When the fastening structure is an insulating tie rod, it includes a tie-rod type upper Mizi junction frame (1), a tie-rod type winding layer (2), a tie-rod type lower Mi-shaped junction frame (3) and a tie-rod type insulating support (4) . 5. A light dry-type air-core reactor according to claim 1, characterized in that: When the fastening structure is an insulating drawstring, it includes a drawstring-type upper Mizi junction frame (12), a drawstring-type winding layer (13), a drawstring-type lower Mizi junction frame (14) and a drawstring-type Insulating post (15). 6. A light dry-type air-core reactor according to claim 4, characterized in that: The rod-type winding layer (2) is pulled in and fixed through the insulating pull rod (5) at the boom and the insulating pull rod (9) between the booms, and the insulating pull rod (5) at the boom and the insulating pull rod (9) between the booms are respectively passed through The insulating pads (11) at the boom and the insulating pads (10) between the booms are fixed on the tie-rod winding layer (2); The tie-rod type upper Pozi-shaped junction frame (1), the tie-rod type winding layer (2) and the tie-rod type lower Pole-shaped junction frame (3) are arranged above the tie-rod type insulating support (4). 7. A light-duty dry-type air-core reactor according to claim 5, characterized in that: The drawstring type winding layer (13) is tightened and fixed by the latitude-free binding tape (19), and the upper end of the latitude-free binding tape (19) is fixed on the drawstring by the drawstring-type upper boom and the winding interlayer insulating spacer (20). On the belt-type upper Mizi junction frame (12) on both sides of the pull-belt-type upper boom circular aluminum column (18), the lower end is fixed on the pull-belt-type upper boom circular aluminum column (18) by the pull-belt-type lower boom and the winding interlayer insulation spacer (23). On the elliptical adjustment aluminum column (22) of the pull-belt type lower boom installed later on both sides of the boom of the belt-type lower Mizi junction frame (14); The drawstring-type upper Pozi-shaped junction frame (12), the drawstring-type winding layer (13) and the drawstring-type lower Pozi-shaped junction frame (14) are arranged above the drawstring-type insulating support (15). 8. A method of manufacturing a lightweight dry-type air-core reactor according to any one of claims 1 to 7, characterized in that: The manufacturing method comprises the following steps: Step 1, directly wind the aluminum stranded wire or the transposed aluminum wire on the fixed size winding mold, and wind the winding layer; Step 2. After the winding of each winding layer is completed, directly use the compression tooling to compress each winding layer as a whole. After the compression pressure reaches the preset value, install the insulating tie rod (9) between the booms or the weft-free binding tape ( 19) Fix each winding layer; Step 3. Immerse each winding layer equipped with compression tooling and tensioning structure in the insulating paint tank for varnish impregnation. After varnish immersion, take out each winding layer and send it to a drying furnace for drying and curing ; Step 4: Transport the dried and solidified winding layer out of the drying furnace, remove the compacting tool after cooling, and make the wire head, coil finishing, and the coil surface is sprayed with primer, topcoat and RTV-II anti-ultraviolet paint. final shape. 9. The manufacturing method of a light-duty dry-type air-core reactor according to claim 8, characterized in that: In step 1, glass cloth is laid on the winding mold to protect the wires, and crimping tools are provided. 10. The manufacturing method of a light-duty dry-type air-core reactor according to claim 8, characterized in that: In step 3, the winding layer is dripped with paint for 0.5 to 1 hour after the paint dipping is completed, and then sent to a drying oven for drying and curing.

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