CN214377995U - Novel large-inductance pouring type dry-type air-core reactor - Google Patents
Novel large-inductance pouring type dry-type air-core reactor Download PDFInfo
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- CN214377995U CN214377995U CN202120087582.7U CN202120087582U CN214377995U CN 214377995 U CN214377995 U CN 214377995U CN 202120087582 U CN202120087582 U CN 202120087582U CN 214377995 U CN214377995 U CN 214377995U
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Abstract
The utility model provides a novel big inductance pouring type dry-type air-core reactor, includes reactor coil body, reactor coil body side both ends are provided with business turn over line binding post, and reactor coil body bottom is provided with the reactor base, reactor coil body and business turn over line binding post's inside and outside are provided with casting mold. The utility model has the characteristics of small, light in weight, turn-to-turn voltage gradient are low, turn-to-turn insulation security is high, the noise is low.
Description
Technical Field
The utility model relates to a reactor technical field, in particular to novel big inductance pouring type dry-type air-core reactor.
Background
Traditional dry-type air-core reactor structure: the reactor coil is formed by a plurality of layers of cylindrical encapsulation parallel connection, a conducting wire is wound by a film-wrapped round aluminum wire or a rectangular transposition aluminum stranded wire, an encapsulation insulating layer is wound by epoxy resin impregnated alkali-free glass wires, the conducting wire is wound in a single or multiple parallel winding mode in the coil, and all outgoing wires are welded to the star frame by argon arc welding. The metal star frame and the coil are packaged and vertically bound by an epoxy glass fiber band, and the metal star frame and the coil are solidified and formed at high temperature to form a firm whole. The traditional dry-type air reactor manufacturing process comprises the following steps: blanking a star frame, manufacturing the star frame, installing a tire, winding, curing, disassembling the tire, finishing, guiding a welding head, spraying paint and processing a supporting accessory.
If a conventional dry air-core reactor structure is used to manufacture a large inductance reactor, there are the following disadvantages:
1. with the development of high voltage and extra-high voltage, the dry type air-core reactor with large inductance of 200-950 ohms is more and more in demand; when rated electrical parameters are met, the reactor has large outer diameter and height and heavy weight, which brings great difficulties for transportation and manufacture, and the reactor occupies large area;
2. the voltage of the reactor terminal with large inductance is generally very high, and if the design of the traditional dry-type air-core reactor is adopted, the turn-to-turn voltage gradient of the encapsulated winding is large, turn-to-turn insulation is difficult to guarantee, breakdown is easy, and the requirement of safe use of the reactor cannot be met.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a novel large inductance pouring type dry-type air-core reactor, which has the characteristics of small volume, light weight, low turn-to-turn voltage gradient, high turn-to-turn insulation safety and low noise.
In order to realize the purpose, the utility model discloses a technical scheme is:
the utility model provides a novel big inductance pouring type dry-type air-core reactor, includes reactor coil body 1, 1 side both ends of reactor coil body are provided with business turn over line binding post 2, and 1 bottom of reactor coil body is provided with reactor base 3, reactor coil body 1 and business turn over line binding post 2's the inside and outside are provided with the casting mold.
The reactor coil body 1 is continuously wound by a copper or aluminum flat wire 6 cake type coil 7.
The reactor coil body 1 is internally and externally provided with an insulating layer, and the insulating layer is formed by casting epoxy resin glue 8.
The reactor base 3 adopts an insulating plate for transition connection.
The pouring mold comprises an underframe tray 9, a coaming 15 is arranged on the upper surface of the underframe tray 9, an insulating cylinder 14 is arranged inside the coaming 15, a batten 12 is arranged at the position, corresponding to the incoming and outgoing line wiring terminal 2, of the coaming 15, an insert 10 and a sealing strip 11 are arranged on the batten 12, an upper pressing frame 13 is arranged on the coaming 15 and the insulating cylinder 14 in a crossed mode, and the end portion of the upper pressing frame 13 is connected with the underframe tray 9 through a pull rod 16.
The reactor coil body 1 comprises an epoxy glass fiber reinforced plastic cylinder 4 fixed on a horizontal winding machine, a glass grid 5 is arranged on the outer side of the epoxy glass fiber reinforced plastic cylinder 4, a lead 6 is arranged on the outer side of the glass grid 5, and the lead 6 is continuously wound into a pancake coil 7 by adopting a single film-covered flat aluminum wire.
The utility model has the advantages that:
the utility model adopts the cake-type winding layer by layer winding, which greatly reduces the potential gradient between the reactor windings; meanwhile, the traditional wet winding process of the impregnated glass fiber is replaced by the process of vacuum casting of epoxy resin, the insulating layer package of the vacuum cast product is not easy to crack, the sealing performance is good, and the safety of the product is greatly improved;
the traditional dry-type air reactor adopts cylinder winding and takes materials such as gummed glass fiber, glass fiber tape and the like as an insulating layer. The voltage between winding layers of the packaging structure is large, the turn-to-turn insulation margin of the winding is low, and the insulation layer is easy to break down to cause product failure.
The traditional dry-type air reactor needs a star frame as a product framework, and a winding wire needs to be led out and welded on the star frame to be led out;
the utility model adopts the continuous winding process of single film-covered flat aluminum wire and cake-type coil, thus greatly improving the turn-to-turn insulation margin and well improving the reliable operation of the product;
the utility model discloses a horizontal coiling has replaced traditional vertical coiling technology, and the advantage of horizontal coiling is even in whole coil coiling tension, and during the continuous coiling of cake formula coil, the cake coiling is turned over to transposition easily between cake and the cake.
The utility model discloses a big inductance pouring type dry-type air-core reactor that the mould was made, the appearance is pleasing to the eye, and the insulating layer is thin thick even, and the coil body is small, light in weight.
The utility model discloses pouring type dry-type air-core reactor is than traditional technology coiling technology dry-type air-core reactor under equal electrical parameter, and the external diameter is little about 60%, highly little about 30%, and light in weight is about 70%, and the difficult fracture of pouring type dry-type air-core reactor, coil adoption cake formula coil continuous winding greatly reduced winding turn-to-turn voltage gradient, improved turn-to-turn insulation margin, in addition, coil simple structure, simple to operate, wholeness are strong, have the characteristics that anti short circuit ability is strong.
The utility model discloses an epoxy pouring, special coiling process technology, this kind of technique have small, light in weight, turn-to-turn voltage gradient is low, and turn-to-turn insulation security is high, noise low grade advantage, and above advantage has increased the technological advantage that my company developed big inductance pouring type dry-type air-core reactor, and then improves the market competition and the occupation ratio of product, will possess wide market prospect.
Drawings
Fig. 1 is a schematic view of the present invention.
Fig. 2 is a schematic diagram of a coil structure.
Fig. 3 is a schematic view of a pancake coil.
Fig. 4 is a schematic view of the connection terminal of the present invention.
Fig. 5 is a schematic view of the casting mold of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
FIGS. 1-4 show: the embodiment is as follows:
1. preparing a fetal membrane: a standard epoxy glass fiber reinforced plastic cylinder 4 is adopted as a fetal membrane framework;
2. winding: fixing an epoxy glass fiber reinforced plastic cylinder 4 on a horizontal winding machine, brushing glue on the epoxy glass fiber reinforced plastic cylinder 4, winding a layer of non-woven fabric in a half-lap winding manner, then winding 1 layer of glass grid 5 on the surface of the non-woven fabric, winding and fixing the glass grid 5 by using a weftless tape in order to prevent the glass grid 5 from deforming during winding, starting winding a wire 6 after the glass grid 5 is fixed, continuously winding the wire 6 into a cake-shaped coil 7 by using a single film-wrapped flat aluminum wire, and reserving lead positions for winding a starting end and a closing end;
in the examples: the size of the epoxy glass fiber reinforced plastic cylinder 4 is 480mm of inner diameter, 490mm of outer diameter and 320mm of cylinder height;
in the examples: in a traditional dry-type air-core reactor, a winding process usually winds an insulating layer firstly, then winds a wire on the insulating layer, and then winds the insulating layer to seal the wire, so that the time is long;
the utility model only needs to wind the epoxy glass fiber reinforced plastic cylinder 4, and does not need to wind two layers of insulating layers, thereby saving time and reducing the size of the reactor;
in the examples: the wire adopts a continuous winding process of a single film-coated flat aluminum wire 6 and a pancake coil 7, so that the turn-to-turn insulation strength is greatly improved, and the reliable operation of the product is well improved;
3. assembling: a coiling lead head of a wound cake-shaped coil 7 is welded on a wire inlet and outlet connecting terminal 2, the terminal is placed perpendicular to the axis of the coil and positioned at two ends of the coil, then the cake-shaped coil 7 is placed in a casting mold, and the wire inlet and outlet connecting terminal 2 is fixed in an insert clamping groove;
in the examples: the traditional dry-type air reactor can be used for manufacturing a star frame, and leads are welded with the star frame, so that the manufacturing process of the star frame is cancelled, and the time is greatly saved;
in the examples: before mold filling, drying the mold, cleaning the inner and outer surfaces, and coating silicone grease on the surfaces;
in the examples: the incoming and outgoing line wiring terminal 2 is processed by a phi 20 aluminum alloy rod, the outer surface of the incoming and outgoing line wiring terminal is provided with a knurl design, and the connection part of the inner ring of the terminal is provided with a thread design, so that the field terminal connection is facilitated;
4. pouring and curing, namely putting the assembled cake-type coil 7 into a vacuum pouring tank for heating, pumping out air, keeping the vacuum degree at 100-300 Pa during pouring, then pouring the coil by using epoxy resin glue 8 for 1-2 hours at a uniform and slow glue flowing speed, and after pouring, putting the cake-type coil 7 into a curing furnace for curing according to the design temperature until the process specified curing time is reached;
in the examples: traditional dry-type air-core reactor adopts materials such as gumming glass silk, glass fiber tape as the insulating layer, and when the reactor appeared overflowing, local temperature rise can be too high along with the extension of time, and the insulating layer punctures and can ignite, and utility model adopts epoxy as the insulating layer, owing to do not contain materials such as glass silk, glass fiber tape, can not be ignited, and the security is high.
5. Demolding: after the coil is discharged from the curing furnace, the mold is disassembled by using operation tools such as a spanner, and the time from the discharge from the curing furnace to the mold disassembly should not exceed 1 hour;
in the examples: in order to facilitate demoulding, hot demoulding is selected, and in order to eliminate internal stress generated after solidification and crack the coil, the process treatment such as slow cooling is carried out;
in the examples: during demolding, the mold is not aligned to be knocked again at any part of the mold so as to avoid damage or deformation of the mold;
6. trimming: cutting the redundant part of the coil by using a cutting machine, and polishing the surface of the coil by using an angle grinder; in the examples: compared with the processing procedure of the traditional dry-type air reactor, the utility model has fewer procedures;
as shown in fig. 5: the casting mold consists of an underframe tray 9, an insert 10, a sealing strip 11, a batten 12, an upper pressing frame 13, an insulating cylinder 14, a coaming 15 and a pull rod 16.
In the examples: the underframe tray 9 is made of A3 steel and has a thickness of 12-15 mm, the coaming 15 is made of stainless steel delta 1-2 mm,
in the examples: the inner surface and the outer surface of the mould are required to be polished, the casting is convenient, the demoulding is required to be inclined, and any corner is required to be provided with a fillet;
in the examples: spraying a stripping agent in advance on the casting mould, and drying;
the utility model discloses big inductance pouring type dry-type air-core reactor has that linear inductance value is good, the appearance is pleasing to the eye, and the insulating layer is thin thick even, and coil is small, light in weight, insulating reliable, small in noise, a great deal of advantage such as maintain the convenience, can extensively promote and use in high pressure, special high voltage direct current transmission system from now on.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a novel big inductance pouring type dry-type air-core reactor, a serial communication port, including reactor coil body (1), reactor coil body (1) side both ends are provided with business turn over line binding post (2), and reactor coil body (1) bottom is provided with reactor base (3), the inside and outside of reactor coil body (1) and business turn over line binding post (2) is provided with the casting mold.
2. The novel large-inductance cast dry-type air-core reactor is characterized in that the casting mold comprises an underframe tray (9), a coaming (15) is arranged on the upper surface of the underframe tray (9), an insulating cylinder (14) is arranged inside the coaming (15), a batten (12) is arranged at the position, corresponding to the incoming and outgoing line wiring terminal (2), of the coaming (15), an insert (10) and a sealing strip (11) are arranged on the batten (12), an upper pressing frame (13) is arranged at the top of the coaming (15) and the insulating cylinder (14) in a crossed mode, and the end portion of the upper pressing frame (13) is connected with the underframe tray (9) through a pull rod (16).
3. The novel large-inductance pouring type dry air reactor according to claim 1, wherein the reactor coil body (1) comprises an epoxy glass fiber reinforced plastic cylinder (4) fixed on a horizontal winding machine, a glass grid (5) is arranged outside the epoxy glass fiber reinforced plastic cylinder (4), a lead (6) is arranged outside the glass grid (5), and the lead (6) is continuously wound into a pancake coil (7) by adopting a single film-wrapped flat aluminum wire.
4. The novel large-inductance cast dry-type air-core reactor according to claim 1, characterized in that the reactor coil body (1) is internally and externally provided with an insulating layer, and the insulating layer is cast and molded by epoxy resin glue (8).
5. The novel large-inductance cast dry-type air-core reactor according to claim 1, characterized in that the reactor base (3) is transitionally connected by insulating plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120087582.7U CN214377995U (en) | 2021-01-13 | 2021-01-13 | Novel large-inductance pouring type dry-type air-core reactor |
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| CN202120087582.7U CN214377995U (en) | 2021-01-13 | 2021-01-13 | Novel large-inductance pouring type dry-type air-core reactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864253A (en) * | 2022-04-19 | 2022-08-05 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Manufacturing method of dry type air-core reactor |
| CN114974878A (en) * | 2022-06-20 | 2022-08-30 | 株洲中车奇宏散热技术有限公司 | Manufacturing method of air-core reactor capable of preventing coil from cracking |
| CN116384161A (en) * | 2023-06-01 | 2023-07-04 | 北京电科能创技术有限公司 | Implementation method, equipment and medium of dry type air-core reactor |
-
2021
- 2021-01-13 CN CN202120087582.7U patent/CN214377995U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864253A (en) * | 2022-04-19 | 2022-08-05 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Manufacturing method of dry type air-core reactor |
| CN114864253B (en) * | 2022-04-19 | 2024-02-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Manufacturing method of dry type air-core reactor |
| CN114974878A (en) * | 2022-06-20 | 2022-08-30 | 株洲中车奇宏散热技术有限公司 | Manufacturing method of air-core reactor capable of preventing coil from cracking |
| CN114974878B (en) * | 2022-06-20 | 2023-12-15 | 株洲中车奇宏散热技术有限公司 | Manufacturing method of air core reactor for preventing coil from cracking |
| CN116384161A (en) * | 2023-06-01 | 2023-07-04 | 北京电科能创技术有限公司 | Implementation method, equipment and medium of dry type air-core reactor |
| CN116384161B (en) * | 2023-06-01 | 2023-07-28 | 北京电科能创技术有限公司 | Implementation method, equipment and medium of dry type air-core reactor |
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