CN110491650B - Hollow reactor - Google Patents
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- CN110491650B CN110491650B CN201910828586.3A CN201910828586A CN110491650B CN 110491650 B CN110491650 B CN 110491650B CN 201910828586 A CN201910828586 A CN 201910828586A CN 110491650 B CN110491650 B CN 110491650B
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- 239000002826 coolant Substances 0.000 claims abstract description 81
- 239000004020 conductor Substances 0.000 claims description 28
- 239000011152 fibreglass Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 238000004804 winding Methods 0.000 description 17
- 238000001816 cooling Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 9
- 238000009413 insulation Methods 0.000 description 8
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- 229910052782 aluminium Inorganic materials 0.000 description 6
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- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/20—Cooling by special gases or non-ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/303—Clamping coils, windings or parts thereof together
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Transformer Cooling (AREA)
Abstract
The invention relates to the technical field of inductance devices and provides an air-core reactor. The air-core reactor includes: the coil, the first and the second confluence frames are provided with wiring terminals electrically connected with an external circuit, each confluence frame comprises a ring body and a cross arm, the cross arm extends along the radial direction of the coil, the cross arm is arranged on the ring body, the ring body and the cross arm are mainly formed by conductive hollow pipes, and the hollow pipes of the ring body are communicated with the hollow pipes of the cross arm; the first confluence frame is provided with a cooling medium main inlet and a cooling medium branch outlet, and the second confluence frame is provided with a cooling medium main outlet and a cooling medium branch inlet; more than two coils are arranged, and each coil is sleeved together; the cooling medium flows through the first confluence frame, the coil and the second confluence frame in sequence, and the connecting terminal of the first confluence frame is electrically connected with the connecting terminal of the second confluence frame through the coil. The air reactor is suitable for circuits with large running current and long running time, and has good heat dissipation capacity.
Description
Technical Field
The invention relates to the technical field of inductance devices, in particular to an air-core reactor.
Background
The reactor is also called an inductor, provides an inductance value on a circuit, plays roles of limiting short-circuit current, providing inductive reactive power and the like on different occasions, and is structurally divided into an iron core reactor and an air core reactor. The air-core reactor has a magnetic circuit of air, does not have saturation phenomenon, and has a reactance value of a fixed value, so the air-core reactor is widely applied to a power system.
The reactor can generate heat because of the heat effect of electric current when using, if not in time to its heat dissipation, will lead to the insulating ageing of conductor, and in serious cases, the insulating damage forms the turn-to-turn short circuit, and then leads to whole reactor to burn out. In order to dissipate heat of the reactor, a technician in the prior art may set a corresponding liquid cooling system in the reactor, for example, an air core inductor disclosed in patent document with an authorization publication number of CN209249256U and an authorization publication date of 2019.08.13, where the inductor mainly includes an inner core and an inductor coil wound around a circumferential wall of the inner core, the inductor coil is formed by winding a hollow conductor, distilled water flows in an inner cavity of the hollow conductor, and the inductor coil is cooled by the distilled water.
However, such an inductor also has a certain limitation in use, because only one inductor coil is provided in the whole inductor, the inductor can only be arranged in a circuit with a small rated current, and the application range is limited. In order to make the inductor suitable for being used in a circuit with larger rated current, or increase the number of the inductors, the inductors are connected in parallel in the circuit; or the hollow conductor in the inductance coil is thickened or lengthened, so that the hollow conductor has a larger flow area. Both of these approaches undoubtedly increase production costs.
Disclosure of Invention
The invention aims to provide an air-core reactor which is suitable for a circuit with large running current and long running time and has good heat dissipation capacity.
In order to achieve the purpose, the air-core reactor adopts the following technical scheme:
an air-core reactor, comprising:
a coil formed mainly of a hollow conductor wound in a hollow cylindrical shape;
the coil is characterized by further comprising a first confluence frame and a second confluence frame, wherein the first confluence frame and the second confluence frame are arranged on two axial sides of the coil, the first confluence frame and the second confluence frame are provided with wiring terminals electrically connected with an external circuit, each confluence frame comprises a ring body and a cross arm, the cross arm extends along the radial direction of the coil, the cross arm is arranged on the ring body, the ring body and the cross arm are mainly formed by conductive hollow pipes, and the hollow pipes of the ring body are communicated with the hollow pipes of the cross arm;
the first confluence rack is provided with a cooling medium main inlet and a cooling medium branch outlet, and the cooling medium main inlet is arranged on the corresponding ring body or the hollow pipe of the cross arm and is used for externally connecting a cold source; the cooling medium branch outlet is arranged on the hollow pipe of the corresponding ring body or the cross arm and is used for connecting the coil;
the second confluence rack is provided with a cooling medium main outlet and a cooling medium branch inlet, and the cooling medium main outlet is arranged on the corresponding hollow pipe of the ring body or the cross arm and used for discharging the cooling medium outwards; the cooling medium inlet is arranged on the hollow pipe of the corresponding ring body or the cross arm and is used for connecting the coil;
the number of the coils is more than two, and the coils are sleeved together;
the hollow conductor of the coil is provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end are respectively provided with an overflowing port, the first connecting end is in conductive connection with the hollow pipe where the cooling medium branch outlet on the first confluence frame is located, and meanwhile, the overflowing port is communicated with the cooling medium branch outlet; the second connecting end is in conductive connection with the hollow pipe where the cooling medium branch inlet on the second confluence frame is located, and meanwhile the overflowing port is communicated with the cooling medium branch inlet; so that the cooling medium flows through the first bus frame, the coil and the second bus frame in sequence, and the connecting terminal of the first bus frame is electrically connected with the connecting terminal of the second bus frame through the coil.
The beneficial effects are that: the first and second confluence frames positioned at two axial sides of the coil are provided with a cooling medium main inlet and a cooling medium main outlet, and are connected with the corresponding confluence frames through the first and second connecting ends of the coil, so that the communication between the inner space of the hollow conductor and the inner space of the confluence frames is realized, and the cooling medium flows; the electric connection between the coils and the first and second confluence frames is realized, so that the confluence frames can distribute current to the coils and distribute cooling medium to the coils, the coils work and shunt at the same time, and the cooling medium flows to cool the coils, thereby ensuring that the air-core reactor meets the requirement of a large-current circuit and well radiates the coils.
Further, a space is arranged between two adjacent coils, and air flow is supplied to pass through the space so as to cool the coils.
The beneficial effects are that: when arranging the coil, reserve the interval between the coil, this interval can utilize the air current to cool off the coil as the air gap that supplies the air current to pass through, uses with the liquid cooling cooperation and has further improved refrigerated efficiency and effect.
Further, the cross arms are radially arranged on the ring body.
The beneficial effects are that: the cross arm is arranged on the periphery of the ring body, so that the size of the ring body can be reduced, the whole floor area of the air reactor is reduced, and the magnetic leakage is reduced.
Furthermore, a cross rod is further arranged on the ring body and used for supporting the coil, and the cross rod and the cross arm are alternately arranged on the ring body.
The beneficial effects are that: the cross bars are arranged on the ring body, so that the coils can be supported, and the strength and the vibration resistance of the bus bar frame can be improved.
Furthermore, the first and second connecting ends of the hollow conductor of the coil are located at the same position in the radial direction of the coil.
The beneficial effects are that: the first connecting end and the second connecting end of the hollow conductor are arranged at the same position in the radial direction of the coil, and accurate connection with the bus frame can be guaranteed no matter whether the hollow conductor is installed normally or reversely.
Furthermore, the hollow pipe provided with the cooling medium main outlet and the hollow pipe provided with the cooling medium main inlet are arranged on the same side of the air-core reactor.
The beneficial effects are that: the cooling medium main outlet and the cooling medium main inlet are arranged on the same side of the air-core reactor, so that the connection structure is optimized and is convenient to connect with a cold source.
Furthermore, the wiring terminal is arranged on the hollow pipe provided with the cooling medium main outlet and the cooling medium main inlet.
The beneficial effects are that: the wiring terminal is arranged on the hollow pipe provided with the cooling medium main outlet and the cooling medium main inlet, and the wiring terminal serving as a main heating part is cooled by utilizing the characteristic of large flow of the cooling medium main outlet and the cooling medium main inlet, so that the cooling effect is further improved.
Further, the distance between the ring body and the coils arranged in the close proximity is smaller than the radius of the ring body.
The beneficial effects are that: the ring body is close to the coil and arranged, so that the radial size of the ring body is increased, the length of a cooling medium flow path is increased, the cooling medium can uniformly dissipate heat of the air reactor, and the heat dissipation effect is improved.
Furthermore, the outer circumferential surface of the hollow conductor is provided with glass fiber reinforced plastic formed by high-temperature curing of glass yarn.
The beneficial effects are that: the glass fiber reinforced plastic can be used as encapsulation insulation to ensure the insulation between coils, and can support the hollow conductors of the coils, so that the investment of supporting pieces in the air reactor is reduced, and the structure of the air reactor is simplified.
Drawings
FIG. 1 is a schematic perspective view of an air-core reactor according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic structural view of a first bus bar in an embodiment of the air-core reactor of the present invention;
in the figure: 10-a busbar frame; 11-a ring body; 12-a crossbar; 13-wiring aluminum plate; 14-a jack; 15-total cooling medium inlet; 16-cooling medium main outlet; 17-a cross bar; 20-winding; 21-a coil; 22-a lead head; 23-interval.
Detailed Description
A specific embodiment of the air-core reactor according to the present invention will now be described with reference to the accompanying drawings.
An embodiment of the air-core reactor: the air-core reactor mainly comprises a winding 20 and a bus frame 10 arranged at two ends of the winding 20, as shown in fig. 1 and fig. 2, the winding 20 is formed by combining three coils 21 with different radial sizes, the coils 21 are all formed by winding the whole hollow conductor, and after the coils 21 are wound, the coils 21 are sleeved together to form the winding 20. The lead 22, which is an end of the hollow conductor in each coil 21, is a portion where the coil 21 is electrically connected to the bus bar 10, and extends in a direction parallel to the axial direction of the coil 21.
The hollow conductor has an outer diameter of 20mm and an inner diameter of 15mm, has a cavity for a cooling medium to flow therein, and becomes a spiral channel when wound into a coil 21, and can dissipate heat of the hollow conductor when the flowing cooling medium is introduced therein.
The outer peripheral surface of the hollow conductor in the coil 21 is wrapped with a heat shrink tube serving as inter-turn insulation, the insulation grade of the heat shrink tube is H grade, and the outer periphery of the heat shrink tube is further provided with wrapping insulation, the wrapping insulation in the embodiment is a glass fiber reinforced plastic body formed by high-temperature curing glass yarns pre-impregnated with epoxy resin, and the glass fiber reinforced plastic body can serve as wrapping insulation and can also fix the hollow conductor so that the hollow conductor keeps a spiral shape to be connected and fixed with the bus frame 10.
The two bus bars 10 of the air core reactor are arranged at two ends of the winding 20 in the axial direction in the embodiment, and the structure of the bus bars is as shown in fig. 3, the two bus bars are respectively a first bus bar and a second bus bar, the first bus bar is located at the bottom of the winding 20, the second bus bar is located at the top of the winding 20, the two bus bars 10 each include a ring body 11, cross arms 12 and cross bars 17 are uniformly distributed on the ring body 11, the ring body 11 is surrounded by aluminum pipes with an inner diameter of 70mm and an outer diameter of 80mm, and the cross arms 12 and the cross bars 17 are straight aluminum pipes with an inner diameter of 54mm and an outer diameter of 60. Eight openings are formed in the outer side face of the ring body 11, the openings are staggered by 45 degrees, four cross arms 12 and four cross rods 17 are alternately inserted into the openings and welded with the ring body 11, one ends, far away from the ring body 11, of the cross arms 12 and the cross rods 17 are plugged, the space of the ring body 11 is communicated with the spaces in the cross arms 12 and the cross rods 17, and a main body of the confluence frame 10 is formed.
The ring body 11 of the bus bar 10 has a radial dimension slightly smaller than that of the innermost coil 21 of the windings 20, that is, the distance between the ring body 11 of the bus bar 10 and the inner side surface of the windings 20 is smaller than the radius of the ring body 11, and the flow path of the cooling medium can be increased by adopting such a structure.
The two bus bars 10 are arranged on the top and bottom of the winding 20 when in use, the arc-shaped surface of the cross arm 12 facing downwards in the second bus bar is provided with an insertion hole 14 for inserting the lead heads 22 of the three coils 21, namely, the second connecting ends, and the cross arm 12 of the second bus bar is provided with a cooling medium main outlet 16 for discharging the cooling medium outwards, so that the insertion hole 14 is used as a cooling medium branch inlet on the second bus bar and is communicated with the flow passing port of the second connecting end of the coil 21, and the cooling medium in each coil is converged into the second bus bar.
The first bus bar 10 has an arc-shaped face, facing upward, of the cross arm 12, and has insertion holes 14 into which lead terminals 22, i.e., first connection terminals, of three coils 21 are inserted. Since the cross arm 12 of the first confluence rack is provided with a cooling medium main inlet connected with a cold source, the jack 14 on the first confluence rack is used as a cooling medium outlet on the first confluence rack and is communicated with an overflowing port of the first connecting end of the coil 21, so that the cooling medium entering the first confluence rack is shunted to each coil.
After the lead heads 22 of the coils 21 are inserted into the insertion holes 14 of the corresponding cross arms 12, the lead heads are welded with the cross arms 12, so that the overflowing ports on the first connecting ends and the second connecting ends of the coils 21 are communicated with the channels in the bus bar frame 10 to form cooling channels for flowing cooling media in the air-core reactor, the lead heads 22 are welded with the cross arms 12 to realize the electric connection of the coils 21 and the cross arms 12, and the three coils 21 and the bus bar frame 10 form a multi-layer parallel connection structure.
Only one of the straight aluminum tubes in each busbar 10, which serves as a crossbar 12, is not blocked at its outward end, and serves as a coolant inlet or outlet 16 for the coolant to the cooling channels, i.e., the coolant inlet 15 shown in fig. 1 to 3. And the outward ends of other straight aluminum pipes are all subjected to sealing treatment, so that the sealing property of the cooling medium channel is ensured.
For the coil 21, the first connecting end and the second connecting end of the hollow conductor are located at the same position in the radial direction of the coil 21, so that an operator can find the position of the first connecting end and the second connecting end of each coil 21 conveniently during welding. In addition, a wiring aluminum plate 13 serving as a wiring terminal is further mounted on the cross arm 12 provided with the cooling medium main inlet 15 or the cooling medium main outlet 16, the hollow pipe provided with the cooling medium main outlet 16 and the hollow pipe provided with the cooling medium main inlet are arranged on the same side of the air-core reactor, and the length of the cross arm 12 is larger than that of other cross arms 12, so that the air-core reactor is electrically connected with an external circuit.
When the air-core reactor is used by an operator, the pure water, the transformer oil or the SF can be correspondingly driven by using a water pump, an air pump and other supercharging equipment6The gas circularly flows in the cooling channel of the air reactor, so that the cooling media flow in the hollow conductors of the confluence rack 10 and the coils 21 to take away heat generated by the heat effect of current, the air reactor not only has the heat dissipation of the cooling media by circular flowing, but also is provided with an interval 23 for the gas to pass through to cool the coils 21 in an air way between the coils 21 in the winding 20, and the two heat dissipation modes are combined, so that the heat dissipation effect is improved.
In addition, the air core reactor in the invention fixes the winding 20 by using the glass fiber reinforced plastic body as the encapsulation insulation, thereby reducing the use of fixing structural parts, increasing the heat dissipation space of the air core reactor, simplifying the whole structure of the air core reactor, enabling the bus bar frame 10 to distribute current to each coil 21 in the winding 20 and be used as a circulation channel for flowing of a cooling medium, increasing the rigidity and the strength of the whole bus bar frame 10 by the cross arm 12 on the bus bar frame 10, and ensuring the stability of the winding 20.
In the above embodiment, the first and second bus bars only distinguish the two bus bars, but do not limit the two bus bars, so in other embodiments, the first bus bar may be the bus bar located at the top of the coil, and the second bus bar may be the bus bar located at the bottom of the coil; likewise, the coolant inlet and outlet ports may be provided on the crossbar of the combiner frame, and the coolant outlet and inlet ports may be provided on the ring body of the combiner frame; the first and second terminals of the coil can be replaced correspondingly in the upper and lower positions.
In other embodiments, two adjacent coils can be arranged closely, no air gap for air to pass through is reserved, and the coils are cooled only by liquid cooling to dissipate heat.
In other embodiments, only cross arms may be provided on the ring body of the cage, and no cross bars may be provided.
In other embodiments, the bus frame may also adopt other structures, such as two concentrically arranged rings, and a cross arm and a cross bar are arranged between the two rings; alternatively, the cross arms and crossbar are disposed on the inner side of the ring body with the cross arms and crossbar extending toward the axis of the ring body.
In other embodiments, the radial position of the first and second connection ends on the hollow conductor of the coil relative to the coil may be adjusted, for example, the connection ends may be radially offset, but not limited to the connection ends having to be radially at the same position.
In other embodiments, the hollow pipe provided with the cooling medium main outlet and the hollow pipe provided with the cooling medium main inlet may be arranged offset in the radial direction of the entire air-core reactor, without being limited to arranging both on the same side of the air-core reactor.
In other embodiments, the terminal may be disposed on a hollow tube without a cooling medium inlet and outlet, or may be disposed on the cross bar or the ring body, but is not limited to the hollow tube with the cooling medium inlet and outlet.
In other embodiments, the distance between the ring body and the coils disposed within the ring body may be no less than the radius of the ring body itself, such that the ring body is disposed proximate to the axis of the air core reactor.
In other embodiments, the outer circumferential surface of the hollow conductor may no longer be provided with glass fiber reinforced plastic, but a support for supporting the coil may be provided between the coil and the bus bar.
The above-mentioned embodiments, the objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. An air-core reactor, comprising:
a coil formed mainly of a hollow conductor wound in a hollow cylindrical shape;
the method is characterized in that:
the coil is characterized by further comprising a first confluence frame and a second confluence frame, wherein the first confluence frame and the second confluence frame are arranged on two axial sides of the coil, the first confluence frame and the second confluence frame are provided with wiring terminals electrically connected with an external circuit, each confluence frame comprises a ring body and a cross arm, the cross arm extends along the radial direction of the coil, the cross arm is arranged on the ring body, the ring body and the cross arm are mainly formed by conductive hollow pipes, and the hollow pipes of the ring body are communicated with the hollow pipes of the cross arm;
the first confluence rack is provided with a cooling medium main inlet and a cooling medium branch outlet, and the cooling medium main inlet is arranged on the corresponding ring body or the hollow pipe of the cross arm and is used for externally connecting a cold source; the cooling medium branch outlet is arranged on the hollow pipe of the corresponding ring body or the cross arm and is used for connecting the coil;
the second confluence rack is provided with a cooling medium main outlet and a cooling medium branch inlet, and the cooling medium main outlet is arranged on the corresponding hollow pipe of the ring body or the cross arm and used for discharging the cooling medium outwards; the cooling medium inlet is arranged on the hollow pipe of the corresponding ring body or the cross arm and is used for connecting the coil;
the number of the coils is more than two, and the coils are sleeved together;
the hollow conductor of the coil is provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end are respectively provided with an overflowing port, the first connecting end is in conductive connection with the hollow pipe where the cooling medium branch outlet on the first confluence frame is located, and meanwhile, the overflowing port is communicated with the cooling medium branch outlet; the second connecting end is in conductive connection with the hollow pipe where the cooling medium branch inlet on the second confluence frame is located, and meanwhile the overflowing port is communicated with the cooling medium branch inlet; so that the cooling medium flows through the first confluence frame, the coil and the second confluence frame in sequence, and the wiring terminal of the first confluence frame is electrically connected to the wiring terminal of the second confluence frame through the coil;
the cross arms are radially arranged on the ring body;
the ring body is also provided with a cross bar for supporting the coil, and the cross bar and the cross arm are alternately arranged on the ring body;
the distance between the ring body and the coils arranged in the close proximity is smaller than the radius of the ring body.
2. The air-core reactor according to claim 1, characterized in that: and a space is arranged between two adjacent coils, and air flow is supplied to cool the coils.
3. The air-core reactor according to claim 1 or 2, characterized in that: the first and second connection ends of the hollow conductor of the coil are located at the same position in the radial direction of the coil.
4. The air-core reactor according to claim 1 or 2, characterized in that: the hollow pipe provided with the cooling medium main outlet and the hollow pipe provided with the cooling medium main inlet are arranged on the same side of the hollow reactor.
5. The air-core reactor according to claim 1 or 2, characterized in that: the wiring terminal is arranged on the hollow pipe provided with the cooling medium main outlet and the cooling medium main inlet.
6. The air-core reactor according to claim 1, characterized in that: the outer circumferential surface of the hollow conductor is provided with glass fiber reinforced plastic formed by high-temperature curing of glass yarn.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828586.3A CN110491650B (en) | 2019-09-03 | 2019-09-03 | Hollow reactor |
| PCT/CN2019/116029 WO2021042499A1 (en) | 2019-09-03 | 2019-11-06 | Air-core reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828586.3A CN110491650B (en) | 2019-09-03 | 2019-09-03 | Hollow reactor |
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| Publication Number | Publication Date |
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| CN110491650A CN110491650A (en) | 2019-11-22 |
| CN110491650B true CN110491650B (en) | 2021-05-04 |
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| CN201910828586.3A Active CN110491650B (en) | 2019-09-03 | 2019-09-03 | Hollow reactor |
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| CN (1) | CN110491650B (en) |
| WO (1) | WO2021042499A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201298431Y (en) * | 2008-09-25 | 2009-08-26 | 陕西合容电力设备有限公司 | A dry-type hollow current-limiting reactor |
| CN201590313U (en) * | 2009-12-11 | 2010-09-22 | 特变电工股份有限公司 | Dry air core reactor star frame |
| IN2015DN00485A (en) * | 2012-07-24 | 2015-06-26 | Trench Ltd | |
| CN105118619A (en) * | 2015-08-26 | 2015-12-02 | 明珠电气有限公司 | Phase-shifting coil for non-packaged internal-water-cooled phase-shifting transformer |
| CN207602348U (en) * | 2017-11-20 | 2018-07-10 | 宁波保诚电气有限公司 | A kind of list water cooling high frequency transformer |
| CN108597813B (en) * | 2018-07-10 | 2024-02-23 | 北京电力设备总厂有限公司 | Structure of tightly-coupled split reactor |
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- 2019-09-03 CN CN201910828586.3A patent/CN110491650B/en active Active
- 2019-11-06 WO PCT/CN2019/116029 patent/WO2021042499A1/en active Application Filing
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|---|---|
| CN110491650A (en) | 2019-11-22 |
| WO2021042499A1 (en) | 2021-03-11 |
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