CN202711916U

CN202711916U - Low-noise low-temperature rise high-current electric reactor

Info

Publication number: CN202711916U
Application number: CN 201220346914
Authority: CN
Inventors: 滕国兴
Original assignee: SHANGHAI SUDUN ELECTRICAL CO Ltd
Current assignee: SHANGHAI SUDUN ELECTRICAL CO Ltd
Priority date: 2012-07-17
Filing date: 2012-07-17
Publication date: 2013-01-30
Anticipated expiration: 2022-07-17

Abstract

The utility model relates to an electric reactor and particularly to a low-noise low-temperature rise high-current electric reactor. The electric reactor comprises iron cores, foil windings, upper clamps, lower clamps and clamping bolts, wherein a plurality of iron cores are arranged between the upper clamps and the lower clamps, and the foil windings are arranged outside the iron cores. The electric reactor is characterized in that upper yoke iron and lower yoke iron in the iron cores are in an E shape, iron core central pillars are segmented iron cores with air gaps, air-gap gaskets and pouring resin are arranged in the middles of the E-shaped iron cores and the central-pillar air-gap iron cores, each of the foil windings comprises main framework insulation, a radiating air path, layer insulation, a copper foil or an aluminium foil and input and output terminals. The electric reactor is reliable in operation and compact in structure, and the radiating air path is arranged additionally on the main framework insulation, so that the system is rapid to cool and low in temperature rise. The pouring resin and the vertical stratified structure of the foil windings have good insulation performance, during operation, the device is low in noise, no tightening pulling plate is arranged in the structure, and air gaps of the iron cores can not be seen in appearance, therefore, the electric reactor is compact in structure and attractive in appearance, and the upper clamps and the lower clamps in the front and at the back are in an unsymmetrical single-lug structure and convenient to carry.

Description

A kind of low noise, low-temperature-rise, the anti-device of large-current electric

[technical field]

The utility model relates to reactor, specifically the reactor of a kind of low noise, low-temperature-rise, large electric current.

[background technology]

Reactor also is inductor, is to be formed by the plain conductor coiling to have reactance, in order to reduce the electric equipment of short circuit current.Will produce magnetic field in its occupied certain space scope when conductor is switched on, the inductance of the long straight conductor of energising is less, and the magnetic field that produces is not strong, and the reactor that therefore uses in practice is wire coiled solenoid form, and this form is referred to as air core reactor; For making solenoid have larger inductance, in solenoid, insert iron core, this form is referred to as iron-core reactor.

The skeleton structure of the anti-device of large-current electric that uses in electric power system at present all is not to be with the drum shape frame of ventilation slot, in the coil winding process, need to be on the air duct pad stay, do so not only complex process, and easy loosening being scattered of ventilation stay, especially on automatic foil winding equipment, during coiling, because pulling force is large, very easily displacement of stay, and be difficult for after the displacement resetting; Cause overall structure not reach designing requirement, such as coiling on semiautomatic winding machine, owing to artificial pulling force is not enough coil is turned in the process of order after coiling, because carrying or vibration, and cause stay to become flexible, be scattered and do not reach the designing quality requirement.

The other present reactors of the large electric currents of the overwhelming majority, temperature rise, noise are large, that have even to exceed standard very large, to analyze outside the reason deironing core matter, topmost reason is structure problem, the core structure of existing low tension reactor is that a word is capable, be that post iron is the perpendicular iron of yi word pattern, yoke is the capable horizontal iron of a word, and air gap is between upper lower yoke and post iron, use the insulation spacer adjustment, then strain and use bolted with non magnetic arm-tie.Adjust like this method of inductance value with the arm-tie tension, easily when carrying or long-time running, vibrated, and inductance value is changed, and cause the technical parameter skew, can not guarantee equipment safety operation, in addition because affected by vibration, the noise of this structure generation is also very large, and what have surpasses even national standard more than one times, causes the reactor temperature rise too high, dielectric strength reduces greatly, even burns reactor.

[summary of the invention]

The purpose of this utility model is to overcome the deficiency of prior art, provides a kind of temperature rise low, and noise is little, reliable operation, the reactor of compact conformation.

For achieving the above object, design a kind of low noise, low-temperature-rise, the anti-device of large-current electric, comprise iron core, paper tinsel winding, upper clamping piece, lower clamping piece and fishbolt, be provided with some iron cores between upper clamping piece and the lower clamping piece, the iron core outside is provided with the paper tinsel winding, it is characterized in that upper and lower yoke is the E font in the described iron core, iron core middle column is band air gap segment core, be lined with air gap gasket and sealing resin in the middle of E font iron core and the center pillar air-gap iron core, the paper tinsel winding comprises skeleton main insulation, heat radiation air flue, layer insulation, Copper Foil or aluminium foil and line terminal.

Described skeleton main insulation is provided with heat radiation air flue and terminal support muscle.

Described upper clamping piece and lower clamping piece are by the fastening iron core of fishbolt.

Described upper clamping piece is forward and backward to be asymmetric monaural structure.

Described lower clamping piece is provided with the installation footing.

The utility model compared with prior art, reliable operation, compact conformation is set up the heat radiation air flue in skeleton main insulation, so that system rapid heat dissipation, the system temperature rise is low, and the vertical layer structure barrier property of the sealing resin of interpolation and paper tinsel winding is good, and noise is little when making the device operation, owing to not being provided with the tension arm-tie in the structure, outward appearance be can't see iron core air gap, so compact conformation, and the outward appearance dignity is beautiful; Forward and backward upper clamping piece is asymmetric monaural structure, is convenient to carrying.

[description of drawings]

Fig. 1 is the utility model front view;

Fig. 2 is the utility model end view;

Fig. 3 is Fig. 1 paper tinsel winding construction enlarged drawing;

Fig. 4 is skeleton main insulation skeleton front view;

Fig. 5 is skeleton main insulation skeleton end view;

Among the figure 1. iron cores, 2. sealing resins, 3. air gap gaskets 4. heat radiation air flue 5. layer insulations, 6. Copper Foils or aluminium foil (copper sheet or aluminium flake) 7. skeleton main insulation 8. fishbolts 9. lower clamping pieces 10. upper clamping pieces 11. paper tinsel windings 12. terminal support muscle 13. line terminals 14. footing are installed.

[embodiment]

Below in conjunction with accompanying drawing the utility model is further elaborated, its shape structure can be realized this professional domain technical staff.

The utility model is for a kind of low noise, low-temperature-rise, the anti-device of large-current electric are provided, and has structurally done following improvement:

At first, the core structure design aspect, upper and lower yoke is designed to the E font structure, and iron core middle column is designed to the segment core with air gap, is lined with air gap gasket and sealing resin in the middle of the upper and lower yoke of E font and the center pillar air-gap iron core, as shown in figures 1 and 3;

Secondly, the skeleton Main Insulation Structure of Electric is designed to the hollow cube structure of both ends open, and hollow parts is the heat radiation air flue, divides stack E type terminal support muscle at long leg, such as Fig. 4, shown in Figure 5;

At last, the paper tinsel winding construction is designed to the vertical layer structure that jointly is made of main insulation, heat radiation air flue, layer insulation, Copper Foil or aluminium foil as shown in Figure 3.

Aspect selection, the upper and lower yoke of E font is selected high-quality silicon steel sheet; The paper tinsel winding adopts Copper Foil or aluminium foil; The centre is lined with the F class F insulation; Lead terminal adopts copper bar or aluminium row; Skeleton main insulation adopts exotic material.

The manufacture craft aspect,

Because being special construction, winding and lead terminal, skeleton adopts the special installation cold welding; Winding and lead terminal adopt the ultrasonic wave cold welding technology to be welded; The main insulation skeleton adopts structure with air flue and terminal support muscle by the exotic material injection mo(u)lding; After the inductance value test passes, be a firm integral body with the resin embedding.Adjusting inductance value, after inductance value is adjusted, is a firm integral body with resin with the iron core embedding, makes inductance value constant, and after the reactor general assembly, whole paint-dipping drying is processed.

The device that finally makes as depicted in figs. 1 and 2, be provided with some iron cores 1 between upper clamping piece 10 and the lower clamping piece 9, iron core 1 outside is provided with paper tinsel winding 11, on it is characterized in that in the described iron core 1, lower yoke is the E font, iron core middle column is band air gap segment core, be lined with air gap gasket 3 and sealing resin 2 in the middle of E font iron core and the center pillar air-gap iron core, paper tinsel winding 11 comprises skeleton main insulation 7, heat radiation air flue 4, layer insulation 5, Copper Foil or aluminium foil 6 and line terminal 13, described skeleton main insulation 7 is provided with heat radiation air flue 4 and terminal support muscle 12, described upper clamping piece 10 and lower clamping piece 9 are by the fastening iron core 1 of fishbolt, before the described upper clamping piece, rear is asymmetric monaural structure, and described lower clamping piece is provided with installs footing 14.

Claims

1. a low noise, low-temperature-rise, the anti-device of large-current electric, comprise iron core, paper tinsel winding, upper clamping piece, lower clamping piece and fishbolt, be provided with some iron cores between upper clamping piece and the lower clamping piece, the iron core outside is provided with the paper tinsel winding, it is characterized in that upper and lower yoke is the E font in the described iron core, iron core middle column is band air gap segment core, be lined with air gap gasket and sealing resin in the middle of E font iron core and the center pillar air-gap iron core, the paper tinsel winding comprises skeleton main insulation, heat radiation air flue, layer insulation, Copper Foil or aluminium foil and line terminal.

2. a kind of low noise as claimed in claim 1, low-temperature-rise, the anti-device of large-current electric is characterized in that described skeleton main insulation is provided with heat radiation air flue and terminal support muscle.

3. a kind of low noise as claimed in claim 1, low-temperature-rise, the anti-device of large-current electric is characterized in that described upper clamping piece and lower clamping piece are by the fastening iron core of fishbolt.

4. a kind of low noise as claimed in claim 1, low-temperature-rise, the anti-device of large-current electric is characterized in that described upper clamping piece is forward and backward and are asymmetric monaural structure.

5. a kind of low noise as claimed in claim 1, low-temperature-rise, the anti-device of large-current electric is characterized in that described lower clamping piece is provided with the installation footing.