CN200950384Y

CN200950384Y - Non-iron yoke dry-type iron-core reactor

Info

Publication number: CN200950384Y
Application number: CN 200620045296
Authority: CN
Inventors: 刘志刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-29
Filing date: 2006-08-29
Publication date: 2007-09-19
Anticipated expiration: 2016-08-29

Abstract

The utility model provides a dry-type core reactor without iron yoke used for the power system, including a ferromagnetic single-stage core column, an insulation cylinder and a reactor winding arranged around the core column. The utility model is characterized in that: the core columns are arranged in level lamination or radiation and a rectangular or round punched hole is in the center of the core column for screw to penetrate; the insulation cylinder and the core column, the insulation cylinder and the most inner wrapping, and wrappings are all provided with an axial cooling airway and an insulation stay is arranged along the circumferential direction; the reactor winding consists of one or a plurality of wrappings in parallel connection and each wrapping comprises one layer or multiple layers of wires in series or parallel connection; the upper fixed board, the lower fixed board and the screw through the punched hole on the core column together fix the winding and the core; and the inlet wire terminal and the outlet wire terminal are both arranged on the upper end of the reactor winding. The utility model has the advantages of simple structure, convenient wiring, and significant reduction in volume, loss and cost, applicable to various volume products.

Description

Iron-free yoke dry-type iron-core reactor

Technical field

The iron-free yoke dry-type iron-core reactor of the utility model indication is a kind of inductance device, is used for current limliting, voltage stabilizing and reactive power compensation etc. in electric power system.

Background technology

In recent years, along with development of economic construction, net capacity and power load constantly increase, to the demand of dry reactor also in corresponding growth.Dry reactor can be divided into by version:

(1) dry-type air-core reactor.Air core reactor generally adopts the parallel-connection structure of sealing of epoxy glass fiber enhancing more at present, and whole interlayer has air duct, does not have joint in the coil through hot setting, and it all is to be soldered on the star-star connection arm that all ends connect.Advantage be in light weight, mechanical strength is high, the inductance linearity is good and noise is low, shortcoming be loss height, volume greatly, electromagnetic interference is strong to external world.

(2) dry-type iron-core reactor.The iron core of iron-core reactor is made up of a plurality of cakes unshakable in one's determination, upper yoke and lower yoke, needs the metal folder to fix.Advantage is that loss is low, volume is little, and shortcoming is to have electromagnetism saturated phenomenon, noise height.

(3) iron-free yoke dry reactor.Iron-free yoke dry reactor (being called half core type reactor again) has only core limb, does not have the iron yoke, has the advantage that volume is little, loss is low.The iron-free yoke dry reactor winding technique of having developed at present is between upper and lower star-star connection arm, input terminal and outlet terminal lay respectively at the top and bottom of reactor winding, can not solve the situation that input terminal and outlet terminal all are positioned at reactor winding upper end, and owing to use upper and lower two star-star connection arms, cause the eddy current loss of wiring arm bigger, also increased product cost in addition.

Summary of the invention

The purpose of this utility model provides a kind of low cost, low-loss, little, the easy-to-connect of volume, applicable to various capacity and have the iron-free yoke dry-type iron-core reactor of excellent heat dispersion performance, thereby overcomes the deficiencies in the prior art.

Iron-free yoke dry-type iron-core reactor by a kind of electric power system of this purpose design is used comprises the one-time formed core limb of ferromagnetic material, is provided with the reactor winding around core limb.Its architectural feature is:

(1) the core limb cross section is multistage circle or circular cross-section, lamination is parallel lamination shape and arranges or radial arrangement, one rectangle endoporus or the circular inner hole that supplies screw rod to pass arranged in the middle of the core limb, owing to there is not the iron yoke, the core loss of reactor and temperature rise unshakable in one's determination are lower;

(2) core limb and innermost layer are provided with insulating cylinder between sealing, and can improve the insulation property of reactor;

(3) between insulating cylinder and core limb between, insulating cylinder and innermost layer are sealed and each of reactor be provided with axial heat radiation air flue between sealing, along the circumferential direction be provided with insulating stay in air flue, reactor has good diffusing heat dispersion and higher mechanical strength;

(4) the reactor winding is formed in parallel by one or more sealing, each is sealed and is made up of with series connection and mode in parallel one or more layers lead, this winding construction is adapted to the reactor product of various capacity, the external insulation of sealing can adopt encapsulated type structure that poured with epoxy resin formula structure, impregnated glass fibre twine or open-ventilating formula structure;

(5) number of turn of the every layer conductor of reactor winding can have fractional turns, helps to reduce the circulation loss between parallel conducting wire like this;

(6) reactor does not adopt upper and lower star-star connection arm configuration commonly used in the air core reactor, and input terminal and outlet terminal all are positioned at the upper end of reactor winding, and be simple in structure, and easy-to-connect had both reduced eddy current loss, had reduced production cost again;

(7) reactor does not adopt metal upper clamping piece and lower clamping piece commonly used in the iron-core reactor to fix, the winding top and bottom are respectively arranged with upper mounted plate and the bottom plate that insulating material is made, be provided with insulator and binding post at the two ends of upper mounted plate, by the screw rod that passes the core limb endoporus upper mounted plate and bottom plate are made mechanical attachment, thereby reactor winding and iron core are fixed.

Description of drawings

Fig. 1 is embodiment master's TV structure schematic diagram;

Fig. 2 is the plan structure schematic diagram of Fig. 1;

Fig. 3 is the plan structure schematic diagram of parallel laminated core;

Fig. 4 is the plan structure schematic diagram of radial iron core.

Fig. 5 is a upper mounted plate shape schematic diagram;

Fig. 6 is the horizontal schematic diagram of winding;

Embodiment

The utility model proposes a kind of iron-free yoke dry-type iron-core reactor of new construction, as shown in Figure 1.Iron-free yoke dry-type iron-core reactor does not have the iron yoke, and core limb 4 is formed by the ferromagnetic material one-shot forming, and the core limb cross section can be multistage circle or circular cross-section.The lamination 12 of multistage circular cross-section is parallel lamination shape to be arranged, and the endoporus 13 of a rectangle is arranged in the middle of the core limb, and the lamination 14 of circular cross-section is arranged radially, and the endoporus 15 of a circle is arranged in the middle of the core limb.

Be provided with insulating cylinder 5 between the innermost layer of core limb 4 and winding is sealed, between 4 of insulating cylinder 5 and core limbs, insulating cylinder 5 and innermost layer are sealed and each of reactor be provided with stay 11 between sealing and support the axial heat radiation air flue 17 that forms.

The top and bottom of reactor winding are respectively arranged with upper mounted plate 9 and bottom plate 1, and fixed head is made by the insulating material with high mechanical properties.Upper mounted plate 9 is provided with louvre 16, to help the winding heat radiation, an insulator 7 and a binding post 10 respectively are set at the upper mounted plate two ends, and binding post is fixed on the insulator, and the binding post at upper mounted plate two ends uses as input terminal and outlet terminal respectively.Be provided with cross-over block 3 between bottom plate 1 and reactor winding lower surface.The screw rod 8 that passes the core limb endoporus is by tension upper mounted plate 9 and bottom plate 1, and the winding and the iron core of reactor is fixing as a whole.2 pairs of reactors of post insulator play a supportive role.

Reactor winding shown in Figure 6 is sealed by 3 and is formed in parallel, and each is sealed and is made up of with series connection and mode in parallel one or more layers lead, between adjacent wires layer insulation need be set, to improve the insulation property of reactor.A11, a21, a31 and a32 are the inlet wire of reactor winding, and x11, x21, x31 and x32 are the outlet of reactor winding, and the inlet wire of winding and outlet need be connected to respectively on input terminal and the outlet terminal.

Claims

1. the iron-free yoke dry-type iron-core reactor that uses of an electric power system, it is characterized in that insulating cylinder (5) that reactor mainly is provided with by the one-time formed core limb of ferromagnetic material (4), around core limb and reactor winding and upper mounted plate (9) and bottom plate (1) form, the input terminal of reactor and outlet terminal all are positioned at the upper end of reactor winding.

2. iron-free yoke dry-type iron-core reactor according to claim 1, the cross section that it is characterized in that described core limb (4) is multistage circle or circular cross-section, lamination is parallel lamination shape (12) or arrange radial (14), and a rectangle endoporus (13) or a circular inner hole (15) that supplies screw rod (8) to pass arranged in the middle of the core limb.

3. iron-free yoke dry-type iron-core reactor according to claim 1, it is characterized in that between described insulating cylinder (5) and core limb, insulating cylinder and innermost layer seal between and each of reactor be provided with axial heat radiation air flue (17) between sealing, in air flue, along the circumferential direction be provided with insulating stay (11).

4. iron-free yoke dry-type iron-core reactor according to claim 1, it is characterized in that described reactor winding is formed in parallel by one or more sealing (6), each is sealed and is made up of with series connection and mode in parallel one or more layers lead, the number of turn of every layer conductor can have fractional turns, the external insulation of sealing can adopt encapsulated type structure that poured with epoxy resin formula structure, impregnated glass fibre twine or open-ventilating formula structure.

5. iron-free yoke dry-type iron-core reactor according to claim 1, it is characterized in that described upper mounted plate (9) and bottom plate (1) lay respectively at the top and bottom of winding, the material of fixed head is an insulating material, be provided with insulator (7) and binding post (10) at the two ends of upper mounted plate, upper mounted plate and bottom plate made mechanical attachment by the screw rod that passes the core limb endoporus (8).