CN2165512Y

CN2165512Y - Contact voltage-regulating transformer

Info

Publication number: CN2165512Y
Application number: CN 93218591
Authority: CN
Inventors: 戴世铮
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-19
Filing date: 1993-07-19
Publication date: 1994-05-18
Anticipated expiration: 2003-07-19

Abstract

The utility model relates to a contact type voltage regulating transformer which belongs to the product of the electrician. The utility model is composed of an iron core in a shell type or core type and packaged in the cabinet, a voltage regulating winding, a circular reactive component, an insulated nut platform, an inner and an outer contacts, a mechanical transmission device, etc., wherein, the insulated nut platform is screwed in the same center of circle and the same screw pitch with the screw type voltage regulating winding, and the circular reactive component is fixed to the insulated nut platform which is provided with the inner and the outer metal contacts. The utility model can output the current to the load in a smooth way with no electric arc (no spark), so the product with the unit capacity of thousands of kilovolt-amperes and the current of kiloamperes can be manufactured. The utility model can be served as a variable inductor, a current stabilizer and a voltage stabilizer after connected with other electric elements.

Description

Contact voltage-regulating transformer

The utility model belongs to electrician's series products, relates to a kind of contact voltage regulating transformer.

When the existing contact voltage regulating transformer exists turn-to-turn long or instantaneous short circuit drawback, the transient process that electric arc or spark cause is easily burnt voltage regulating transformer.

The purpose of this utility model is: it is unavoidable when long or the drawback of moment turn-to-turn short circuit to eliminate such voltage regulator, the transient process of eliminating electric arc, spark and therefore causing, keep simultaneously that contact (comprising on-off mode) voltage regulating mode through-put power is big, material saving (with changing the magnetic field coupled modes relatively), do not cause the characteristics of wave distortion.(with changing magnetic field coupled modes and phase control mode relatively).

The purpose of this utility model realizes by following scheme: the contact voltage regulating transformer is made up of outer cabinet and the shell-type or core formula iron core, insulating cylinder, pressure regulation winding, annular reactance component, insulation nut platform, inside and outside contact and the mechanical driving device etc. that are encapsulated in the cabinet.The pressure regulation winding adopts cylindrical spiral winding, outermost layer lead outer surface is exposed, uniform pitch on insulating cylinder.Be combined with an insulation nut platform mutually with pressure regulation winding concentric, uniform pitch and with the pressure regulation winding, cause an annular gap on the platform end face and between the pressure regulation winding, on platform, be fixed with annular reactance component, the inside and outside metal contact by transmission device control is housed on the reactance component.This contact voltage regulating transformer, use the exposed lead coiling formula pressure regulation winding of outermost external surface, and by means of electric current is level and smooth with annular short-circuit reactance element and two metal contact of the setting of pressure regulation winding concentric, no electric arc outputs to load (no-spark), thereby can be used for making the separate unit capacity and reach thousands of kilovolt-amperes, the product that electric current is thousands of amperes.

Be described as follows below in conjunction with drawings and the specific embodiments:

Fig. 1 is the utility model global shape structural representation;

Fig. 2 is the shape schematic diagram that the utility model annular reactance component adopts first kind of structure;

Fig. 3 is the shape schematic diagram of two kinds of structures such as the utility model annular reactance component employing;

Fig. 4 is the schematic diagram that the utility model annular reactance component adopts single turn quadrature screwed pipe shape winding;

Fig. 5 is the schematic diagram that the utility model annular reactance component adopts two circle quadrature screwed pipe shape windings;

Schematic diagram when Fig. 6 is two kinds of structures such as the utility model annular reactance component employing.

In Fig. 1,1 is the iron core folder, by bearing fixing mechanical driving device 2 is arranged on the folder, 3,4 is shell type core, insulating cylinder 5 wraps iron core column and spiral is wound with pressure regulation winding 6, is insulation nut platform 7, the annular reactance component 9 of device on the platform with pressure regulation winding concentric, and and the pressure regulation winding between form gap 8, contact 17 is housed on the mechanical driving device.

In Fig. 2,3 iron core column 4 of last lower yoke are insulated tube 5 parcels, are wound with pressure regulation winding 6 on it, and pressure regulation winding 6 is cylindrical spiral windings, and its number of plies can be that one deck also can be a multilayer.But the face of cylinder lead that outermost layer forms expose except that turn-to-turn insulation, and this helical layer winding is a uniform pitch.With pressure regulation winding 6 concentrics a nut platform 7 made from insulating material is arranged, the pitch of this nut platform equates with the pitch of pressure regulation winding, therefore can screw mutually with the pressure regulation winding.The annular reactance component of device 9 on the platform and and winding between a gap 8 that is annular is arranged.The annular reactance component has two kinds of structures, and what introduce among Fig. 2 a kind of structure such as is: reactance component is made up of the annular screwed pipe winding 11 that annular core 10 and lead turn to.Use single or double joint lead and on the inc annular core 10 of circuit in the magnetic circuit closure of making by permeability magnetic material, the tubular winding 11 of the end to end looping snail of an individual layer of quadrature coiling, except that its maximum gauge place lead outer surface for exposed, remainder can have megohmite insulant to coat.

Fig. 3 introduction be two kinds of structures such as grade of annular reactance component 9, the reactor of this structure is made up of three parts: A, the magnetic conductor of being made by one or more permeability magnetic materials 12 of arranging along annular, and the direction along annulus insulate to electric current, magnetic conductor 12 can be a rectangle along the section of annular central axis, also can be U-shaped; B, by the annulus 13 that high conductive material constitutes, the cross section of conductor can be Any shape; C, form, arrange, but only concentrate on the part of annulus along annulus by one or more U-shaped magnetic conductors 14.In the above three part, 12,13,14 geometrical relationship is: the orthographic projection of annular center circle separately is one group of concentric circles, and R12＜R13＜R14.(R12, R13, R14 are respectively the radius of annular center circle orthographic projection) wherein magnetic conductor 12, high conductive material annulus 13 all is fixed on the insulation nut platform 7, and electrically insulated from one another.And two end faces of two end faces of magnetic conductor 14 and magnetic conductor 12 maintain stable air gap 15, magnetic conductor 12 is under the effect of mechanical driving device 2, when being the axle rotation with the circle ring center, magnetic conductor 14 does not rotate thereupon, and it is only synchronous with the axial motion of magnetic conductor 12, but the magnetic flux that induced current produces in the conductive ring 13 can be restricted induced current via

part

12 and 14 closures.

More than interior contact 16 and outer contact 17 are all arranged on the annular reactance component 9 of two kinds of structures.

For the annular reactance component 9 of first kind of structure, interior contact 16 devices are in annular gap 8.The one side of contact 16 contacts with the surface of pressure regulation winding 6 single turn leads, and another side is connected with the lead of annular reactance component 9.And this connection can have following dual mode: for the screwed pipe winding 11 of single turn lead quadrature coiled, interior contact 16 can be simply and the arbitrary circle lead in the winding form firm electrical coupling, as shown in Figure 4.Two screwed pipe windings 11 for two circle leads and magnetic conductor quadrature coiled, the point that is connecting 18 liang of branch roads of interphase reactor on the interior contact 16, the terminal of two branch roads of interphase reactor 18 forms firm electrical coupling with adjacent any two circle screwed pipe windings respectively, as shown in Figure 5.

For the annular reactance component 9 of second kind of structure, the one side of interior contact 16 and pressure regulation winding 6 single turn conductive line surfaces are carried out and slidably contacts, another side then pass magnetic conductor 12 and with its insulation, firm electrical coupling is on conductive ring 13, as shown in Figure 6.

For the annular reactance component 9 of first kind of structure, outer contact 17 has sliding contact with the excircle of annular reactance component 9 under the effect of transmission device.When annular reactance component 9 is done circular motion and when upper and lower displacement along pressure regulation winding axis direction took place, outer contact 17 displacement therewith kept synchronously around the spiral of pressure regulation winding 6, but circular motion is not arranged with the rotation of annular reactance component.Two independent contacts are attached to each end of 19 two balance windings of interphase reactor respectively about outer contact 17, and the connection mid point 20 of two windings is connected to lead-out terminal as a terminal, shown in Fig. 4,5; Annular reactance component for second kind of structure, outer contact 17 is single contact, contact two ends lead-out wire is drawn respectively from magnetic conductor 14 both sides, and links to each other with interphase reactor 19 two ends, and the mid point 20 of interphase reactor 19 is connected to lead-out terminal as a terminal.

In sum, the contact voltage regulating transformer of above design feature has used one to be enclosed within the outer annular reactance component of pressure regulation winding, and this element is owing to be an impedance, therefore the short circuit current that main flux is formed can limit, and can no-load current be had obviously and increase.It both can independently constitute the voltage regulator of self coupling or two volumes, again can its different modes that in circuit, is connected with other electrotechnical elements as voltage regulation component, variable inductance, variable no-load voltage ratio current transformer, flow straightener, uses such as pressurizer, simultaneously available its manufacturing separate unit capacity reaches thousands of kilovolt-amperes, the product that electric current is thousands of amperes.

Claims

1, a kind of be encapsulated in the cabinet by shell-type or core formula iron core (3,4), insulating cylinder (5), pressure regulation winding (6), the contact voltage regulating transformer of mechanical driving device (2), it is characterized in that: pressure regulation winding (6) adopts cylindrical spiral winding, outermost layer lead outer surface is exposed, uniform pitch on insulating cylinder (5), with pressure regulation winding concentric, uniform pitch also is combined with an insulation nut platform 7 mutually with the pressure regulation winding, cause an annular gap (8) on the platform end face and between pressure regulation winding (6), on platform, be fixed with annular reactance component (9), be equipped with on the reactance component by in the transmission device control, outer metal contact (16,17).

2, contact voltage regulating transformer according to claim 1, it is characterized in that: annular reactance component (9) has two kinds of structures: 1, reactance component is made up of the annular screwed pipe winding (11) that annular core (10) and lead turn to, with single or double joint lead and on the inc annular core of circuit (10) in the magnetic circuit closure, the end to end screwed pipe shape winding (11) of an individual layer of quadrature coiling, maximum gauge place lead outer surface is exposed, and remainder has megohmite insulant to coat; 2, annular reactance (9) is made up of three parts: A, by the magnetic conductor 12 of arranging along annular that an above permeability magnetic material is made, and its section along the annular central axis can be a rectangle, can be U-shaped; B, by the annulus (13) that high conductive material constitutes, its sectional area can be Any shape; C, form, arrange, but only concentrate on the part of annulus along annulus by an above U-shaped magnetic conductor (14); The geometrical relationship of three parts is R12＜R13＜R14, magnetic conductor (12), high conductive material annulus (13) are fixed on the insulation nut platform, and electrically insulated from one another, two end faces of magnetic conductor (14) and two end faces of magnetic conductor (12) are held stable air gap (15).

3, contact voltage regulating transformer according to claim 1, it is characterized in that: for the annular reactance component (9) of first kind of structure, interior contact (16) is arranged in the annular gap (8), the one side of contact contacts with the surface of pressure regulation winding (6) single turn lead, another side is connected with the lead of annular reactance component (9), and this dual mode that is connected with: for the screwed pipe winding (11) of single turn lead quadrature coiled, interior contact (16) is connected with arbitrary circle lead in the winding, two screwed pipe windings (11) for two circle leads and magnetic conductor quadrature coiled, the point that is connecting interphase reactor (18) two branch roads on the interior contact (16), and the other end of two branch roads is connected with adjacent any two circle screwed pipe windings; For the one side and the sliding contact of pressure regulation winding (6) single turn conductive line surfaces of the interior contact of annular reactance component (9) (16) of second kind of structure, another side then pass magnetic conductor (12) and with its insulation, be connected on the conductive ring (13).

4, contact voltage regulating transformer according to claim 1, it is characterized in that: for the annular reactance component of first kind of structure, outer contact (17) is with sliding contact with the periphery of annular reactance component (9) under the effect of mechanical driving device, two independent feelers connect each end of two balance windings of interphase reactor (19) respectively about outer contact (17), and the connection mid point (20) of two windings is a lead-out terminal; Annular reactance component for second kind of structure, outer contact (17) is single contact, its two ends lead-out wire is drawn respectively from magnetic conductor (14) both sides, joins with interphase reactor (19) two ends, and interphase reactor (19) two ends mid points (20) are connected to lead-out terminal as a terminal.