CN201765900U - New dry-type air-core reactor - Google Patents

Abstract

The utility model relates to a novel dry type hollow electric reactor, which can be used to reduce the specification of an electric reactor lead, reduce the size of the electric reactor, and realize the medium tap of the electric reactor. The utility model comprises a clamping fixture insulation layer, a lead, and an encapsulating insulation layer. Between the clamping fixture insulation layer and the encapsulating insulation layer are disposed windings, which comprise a plurality of horizontal windings and a plurality of vertical windings. Gaps are arranged between each two horizontal windings, and supporting strips are disposed in the gaps. Two adjacent horizontal winds are connected together through supporting strips, and the leads are in a serial connection.

Description

New dry-type air-core reactor

technical field

The utility model relates to a novel dry-type air-core reactor.

Background technique

As we all know, reactors are inductive high-voltage electrical appliances used in power systems to limit short-circuit current, reactive power compensation, and phase shifting, while dry-type air-core reactors are reactors whose windings are not immersed in insulating liquid, as shown in Figures 1 to 2. It includes a form insulating layer 1 and an encapsulating insulating layer 2, and a winding 3 is formed between the form insulating layer 1 and the encapsulating insulating layer 2. The winding 3 includes multiple sets of transverse windings and multiple sets of longitudinal windings, and there are multiple sets of wires 4, and The upper end of each group of wires 4 is the lead-in end 5, and the lower end is the lead-out end 6. The middle of each group of wires 4 bypasses the longitudinal winding in turn from top to bottom, that is, a parallel structure is formed between the wires 4. This design method has the following characteristics :

1. Since the diameter of the wire increases sequentially when the wire is wound, the electric density, self-inductance, and height of each layer of wire are considered in the design, so the wire gauge of the multi-layer wire increases sequentially. It leads to the diversification of wire gauge and increases the production cost.

2. Since the wires of each layer are connected in parallel, the inductance value is smaller than that of the single-layer wire, which increases the overall size of the reactor and increases the production cost and installation cost.

3. Since the wire gauges of the wires of each layer are different, and the cross-section is very small, it is difficult to determine the middle inductance value, so if it is necessary to tap in the middle of the reactor during design, it cannot be realized.

Utility model content

In order to solve the above problems, the utility model provides a novel dry-type air-core reactor that reduces the specifications of the reactor wires, reduces the external dimensions of the reactor, and can realize the middle tap of the reactor.

The new dry-type air-core reactor of the utility model includes a mold insulating layer, a wire and an encapsulating insulating layer, and a winding is arranged between the mold insulating layer and the encapsulating insulating layer, and the winding includes multiple sets of transverse windings and multiple sets of longitudinal windings , wherein: gaps are provided between each set of transverse windings, and support bars are provided between the gaps, two adjacent sets of transverse windings are connected together through support bars, and the wires are connected in series.

The beneficial effect of the new dry-type air-core reactor of the utility model is: the wires of each layer are connected in series, so the current in each layer of wires is equal, so the selected wire gauge is also equal, so that the wires of each layer are connected in series. The wire gauge is unified to one specification, thereby reducing the specification of the reactor wire; since the wires of each layer are connected in series, the inductance value is N times that of the single-layer wire (N is the number of encapsulations), thereby reducing The structural size of the reactor is determined; since the wires of each layer are connected in series, if it is necessary to tap in the middle of the reactor, it is only necessary to calculate the corresponding number of turns, and then the terminal can be drawn at the corresponding position to realize the middle tap.

Description of drawings

Fig. 1 is a top view structural schematic diagram of the prior art;

FIG. 2 is a schematic structural view of the front view of the prior art;

Fig. 3 is a schematic view of the top view structure of the new dry-type air-core reactor of the present invention;

Fig. 4 is a schematic structural diagram of the front view of the new dry-type air-core reactor of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Fig. 3-Fig. 4, the new dry-type air-core reactor of the utility model includes a mold insulating layer 7, a wire 10 and an encapsulating insulating layer 8, and a winding is arranged between the mold insulating layer 7 and the encapsulating insulating layer 8 9. The winding 9 includes multiple sets of transverse windings 14 and multiple sets of longitudinal windings 15. There are gaps 16 between each set of transverse windings 14, and support bars 13 are provided between the gaps 16. Two adjacent sets of transverse windings 14 are connected by support bars 13 Together, the wires 10 are connected in series, so that the top of the first wire 10 is the lead-in end 11, the bottom end of the last wire 10 is the lead-out end 12, and each wire 10 is wound around the transverse winding 14 in turn. After that, connect them in series.

The above embodiments only describe preferred implementations of the present utility model, and are not intended to limit the scope of the present utility model. All modifications and improvements should fall within the scope of protection determined by the claims of the present invention.

Claims (1)

1. novel dry-type air-core reactor, comprise mold insulating barrier, lead and seal insulating barrier, mold insulating barrier and seal and be provided with winding between the insulating barrier, winding comprises many horizontal windings of group and the vertical winding of many groups, it is characterized in that: be provided with the gap between every group of horizontal winding, and support bar is set between the gap, and the horizontal winding of two adjacent groups links together by support bar, and described lead is cascaded.

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