CN102709034A

CN102709034A - On-load continuous transformer

Info

Publication number: CN102709034A
Application number: CN2012100002154A
Authority: CN
Inventors: 李紫薇
Original assignee: WUJIANG DONGTAI ELECTRIC POWER SPECIAL SWITCH CO Ltd
Current assignee: WUJIANG DONGTAI ELECTRIC POWER SPECIAL SWITCH CO Ltd
Priority date: 2012-01-04
Filing date: 2012-01-04
Publication date: 2012-10-03

Abstract

The invention provides an on-load continuous transformer which comprises a B-shaped iron core, a primary winding and a secondary winding. The primary winding and the secondary winding are wound on three parallel cross columns of the B-shaped iron core. Each cross column consists of two sections, one section is a fixed column wound with the primary winding, and the other section is a freely-rotatable rotary column wound with the secondary winding. One end of the secondary winding is electrically connected with an electric brush fixed on the rotary column. The electric brush outputs through a conductive ring. The other end of the secondary winding extends to a rotatable winding column driven by a motor and is wound on the same and electrically connected with an electric brush fixed on the winding column. The electric brush of the winding column also outputs through a conductive ring. Without a tap switch, the on-load continuous transformer can realize continuous adjustment of the transformer ratio and completely suppress generation of electric arcs.

Description

A kind of have carry a continuous transformer

Technical field

The present invention relates to electric power infrastructure device field, especially, relate to a kind of power transformer, comprise iron core, primary coil and secondary coil.

Background technology

In civilian supply of electric power field, adopt high-tension electricity to transmit electricity usually, so can reduce the loss of electric current on power transmission line; Near the user side place, need set up transformer station usually, high-tension electricity is carried out step-down; Thereby be met the line voltage of normal electricity consumption, i.e. 220V.

Generally, the power consumption of user side between peak and ebb, change bigger, owing to the reason of line loss; When power consumption fluctuates, the virtual voltage of user side also will change, and so, need transformer constantly to adjust transformation ratio; To stablize the virtual voltage of user side, this process is achieved through the primary coil of change transformer and the turn ratio of secondary coil, and when changing turn ratio; In order to guarantee the normal electricity consumption of user, need under the situation of interrupt load electric current not, realize the conversion of transformation ratio, in addition; Also need prevent the generation of electric arc in the transformation transfer process, so, generally adopt on load tap changer at present to satisfy above-mentioned requirements.

Present on load tap changer; Mainly realize the tap of each contact, nonetheless, between each switch contact point electrical potential difference is arranged still through the transition circuit; Under the bigger situation of humidity or voltage adjusting range; Owing to still have electrical potential difference between each contact, so during voltage transitions, still electric arc possibly appear between each contact.

Summary of the invention

In order to address the above problem, the object of the present invention is to provide a kind of continuous transformer of carrying that has, this kind has the continuous transformer of carrying to need not shunting switch, can realize the continuous adjustment of transformation ratio, and suppress the generation of electric arc fully.

The technical solution adopted for the present invention to solve the technical problems is: this has and carries a continuous transformer and comprise day font iron core, and is around in primary coil, secondary coil on three parallel spreaders of this day font iron core; Each said spreader constitutes by two sections; Wherein one section is fixed leg; Be wound with said primary coil, the column spinner of another section for rotating freely is wound with said secondary coil on it; A termination of said secondary coil electrically connects is fixed in a brush head on the said column spinner, and this brush head is outwards exported through conducting ring; Another termination of said secondary coil extends to one by motor-driven rotatable wrapping post; And be wound on this wrapping post; And electrically connect and to be fixed in the wrapping post brush head on the said wrapping post, this wrapping post brush head is also outwards exported through a conducting ring.

As preferably; The cross section of three parallel spreaders of said day font iron core is all rounded; Thereby make said column spinner and fixed leg touching position not have corner angle, prevent said secondary coil with the column spinner rotary course in, between said column spinner and fixed leg, colluded damage.

As preferably, said column spinner is made up of inner core and sleeve pipe, and said inner core is fixed; One-body molded with said fixed leg; And having cylindrical surface, said sleeve pipe is placed in this core surface, and can rotate freely around this inner core; Thereby can make whole said day font iron core have compact magnetism guiding access, ensure its power transmission efficiency.

As preferably, the said motor that drives said rotatable wrapping post is a stepping motor, and controlled device is accurately controlled.

Beneficial effect of the present invention is: this has the continuous transformer of carrying when work; Drive the rotation of a said rotatable wrapping post respectively through three motors; Thereby can realize the traction to said secondary coil, each said secondary coil will rotate with each said column spinner together, thereby change the number of turn of secondary coil on said column spinner; Thereby realize the continuous adjustment of the output voltage of each secondary coil; Since in the transformation process, and the tap of non-contact, the generation that therefore can stop electric arc fully.

Description of drawings

Fig. 1 is that the present invention is a kind of has an example structure sketch map that carries continuous transformer iron core part;

Fig. 2 is the sketch map that cooperates of the brush head on the column spinner and conducting ring among Fig. 1 embodiment;

Fig. 3 is the sketch map of the rotatable wrapping post that is complementary with Fig. 1 embodiment.

Among the figure: 1, day font iron core; 21, primary coil; 210, terminals; 22, secondary coil; 221, brush head; 222, termination; 23, coiled wire-wound coil; 231, wrapping post brush head; 31, fixed leg; 32, column spinner; 41,42, conducting ring; 5, rotatable wrapping post.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is further specified:

In the embodiment of Fig. 1-shown in Figure 3, this has the continuous transformer of carrying to comprise day font iron core 1, and is around in primary coil 21, secondary coil 22 on this day font iron core three parallel spreaders of 1; Each said spreader constitutes by two sections, and wherein one section is fixed leg 31, is wound with said primary coil 21; Two terminals 210 of this primary coil connect input voltage, and the column spinner 32 of another section for rotating freely is wound with said secondary coil 22 on it; A termination of said secondary coil 22 electrically connects is fixed in a brush head 221 on the said column spinner 32; This brush head 221 is outwards exported through conducting ring 41, and is as shown in Figure 2, in physical cabling; Each secondary coil 22 pairing conducting ring 41 is electrically connected, as common zero line output; Another termination 222 of said secondary coil 22 extends to a rotatable wrapping post 5 that is driven by motor (not shown); As shown in Figure 3; And be wound on this wrapping post 5, constitute coiled wire-wound coil 23, and the wrapping post brush head 231 on the said wrapping post 5 is fixed in electric connection; This wrapping post brush head 231 is also outwards exported through a conducting ring 42; During 5 rotations of said wrapping post, can reel or discharge twining lead on it, thereby adjustment be wound in the number of turn of the secondary coil 22 on the said column spinner 32.

The cross section of three parallel spreaders of said day font iron core 1 is all rounded; Thereby make said column spinner 32 not have corner angle with fixed leg 31 touching positions; Prevent said secondary coil 22 with column spinner 32 rotary courses in, between said column spinner 32 and fixed leg 31, colluded damage.

Above-mentioned have a continuous transformer of carrying, and said column spinner 32 is made up of inner core and sleeve pipe, and said inner core is fixed; One-body molded with said fixed leg 31; And having cylindrical surface, said sleeve pipe is placed in this core surface, and can rotate freely around this inner core; Thereby can make whole said day font iron core 1 have compact magnetism guiding access, ensure its power transmission efficiency; The said motor that drives said rotatable wrapping post 32 is a stepping motor, and controlled device is accurately controlled.

Above-mentioned have the continuous transformer of carrying when work, drives the rotation of a said rotatable wrapping post 5 respectively through three motors, thereby can realize the traction to said secondary coil 22; Each said secondary coil 22 will rotate with each said column spinner 32 together; Thereby change the number of turn of secondary coil 22 on said column spinner 32, thereby realize the continuous adjustment of the output voltage of each secondary coil 22, because in the transformation process; And the tap of non-contact, the generation that therefore can stop electric arc fully.

The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. one kind has and carries a continuous transformer, comprises day font iron core (1), and is around in primary coil (21), secondary coil (22) on three parallel spreaders of this day font iron core (1); Each said spreader constitutes by two sections; Wherein one section is fixed leg (31); Be wound with said primary coil (21), the column spinner (32) of another section for rotating freely is wound with said secondary coil (22) on it; A termination of said secondary coil (22) electrically connects is fixed in the brush head (221) on the said column spinner (32), and this brush head (221) is through outwards output of conducting ring (41); Another termination (222) of said secondary coil (22) extends to one by motor-driven rotatable wrapping post (5); And be wound on this wrapping post (5); And electrically connect and to be fixed in the wrapping post brush head (231) on the said wrapping post (5), this wrapping post brush head (231) is also through outwards output of a conducting ring (42).

2. according to claim 1 have carry a continuous transformer, it is characterized in that: said day the font iron core (1) the cross section of three parallel spreaders all rounded.

3. according to claim 2 have carry a continuous transformer; It is characterized in that: said column spinner (32) is made up of inner core and sleeve pipe; Said inner core is fixed, and is one-body molded with said fixed leg (31), and has cylindrical surface; Said sleeve pipe is placed in this core surface, and can rotate freely around this inner core.

According among the claim 1-3 any one described have carry a continuous transformer, it is characterized in that: the said motor that drives said rotatable wrapping post (5) is a stepping motor.