CN201359911Y

CN201359911Y - Voltage and capacitance regulating transformer with two switches

Info

Publication number: CN201359911Y
Application number: CNU200820231729XU
Authority: CN
Inventors: 汪明伟; 李丹
Original assignee: Huludao Shenzhong Transformer Co Ltd
Current assignee: Huludao Shenzhong Transformer Co Ltd
Priority date: 2008-12-16
Filing date: 2008-12-16
Publication date: 2009-12-09
Anticipated expiration: 2018-12-16

Abstract

The utility model provides a voltage and capacitance regulating transformer with two switches. A secondary coil output winding is wrapped and wound outside an iron core; a first input winding is wound in an inner layer or an outer layer of the iron core and connected with an output winding switch; and a second input winding is also wound on the inner layer or the outer layer of the iron core and connected with a second input winding switch. The input windings are segmented into winding sections. Two ends of the first input winding are respectively connected with the second input winding through a switch. A winding switch has selective connecting performance and is provided with a moving contact. The transformer not only can regulate turn number of primary windings and meet the requirement of the regulation of voltage and capacity, but also can achieve full winding work and improve the function of equipment, has obvious effects of energy and material saving, and is suitable for meeting the requirement of the regulation of voltage and capacity.

Description

Two switch pressure regulating and capacitance regulating transformers

Technical field

The utility model provides the transformer in power supply field, specifically two switch pressure regulating and capacitance regulating transformers.

Background technology

The transformer pondage has two kinds of methods usually, and a kind of is that output voltage is constant, changes the number of turn or the connection of transformer one, two windings, changes the secondary output current, regulates transformer capacity.

Another kind is that output current is constant, changes the number of turn or the connection of a winding of transformer, changes output voltage, regulates transformer capacity.

Above-mentioned two kinds of methods all belong to variable flux voltage regulation, both adjust the transformer core magnetic flux by regulating a umber of turn, reach to change the secondary winding electromotive force.

Tap winding exit is selected to connect through shunting switch, can change the effective working turns of winding one time.Receive minimum tap when switch, the tap winding is all thrown away does not have electric current to pass through, and is called the non-productive work number of turn.When the pressure regulation multiple reaches two times, the non-productive work number of turn will be equal to effective working turns.

The winding conducting wire cross section also needs to choose by maximum primary current Im, so the Duo non-productive work number of turn make transformer the pattern capacity both material cost significantly increase.

Summary of the invention

For all tap windings are all become effective work winding, the utility model proposes two switch pressure regulating and capacitance regulating transformers.This transformer is divided into two parts to primary coil by two shunting switchs and connects the technical problem that solves pressure regulation and capacity transfer by series and parallel.

The scheme that the utility model technical solution problem is adopted is:

Be wound with secondary coil output winding at the outside unshakable in one's determination parcel, be wound with the first input winding and be connected, also be wound with the second input winding and be connected with the second input winding switch with the first input winding switch at its skin or internal layer.

The two ends of the first input winding attach on the second input winding by switch respectively.

The winding switch is to have the switch of selecting to connect performance, which is provided with moving contact.

Good effect is: transformer of the present utility model is the scalable input winding coil number of turn both, satisfies the needs of pressure regulating and capacitance regulating, can realize full winding work again, has improved the equipment effect, has considerable energy saving material-saving effect.Suitable conduct needs the needs of pressure regulation and capacitance-adjustable transformer.

Description of drawings

Fig. 1 is the utility model structure chart

Fig. 2 is the utility model circuit connection diagram

Fig. 3 is the utility model dish type rotary switch and circuit connection diagram

Among the figure, 1. iron core 2. first is imported winding, 3. the first input winding switch, the 4. second input winding, 5. second input winding switch, 6. the output winding.

Embodiment

According to shown in Figure 1, be wound with secondary coil output winding 6 at the outside unshakable in one's determination parcel, be wound with the first input winding 2 and be connected with the first input winding switch 3 at its skin, also be wound with the second input winding 4 and be connected with the second input winding switch 5, switch 3 and switch 5 interconnect.

According to shown in Figure 2, the two ends of the first input winding 2 attach on the second input winding 4 by switch respectively, realize the parallel connection and serial connection of each winding segments by switch.Switch ends is in parallel with winding respectively, and the winding outside is series connection.Be respectively equipped with terminals on the winding segments.

According to shown in Figure 3, the first input winding switch and the second input winding switch are the dish type rotary switch, which is provided with moving contact, the series connection that rotation by the dish type switch can realize the segmentation winding be connected in parallel, be used to increase or reduce coil turn, adjust voltage and capacity by coil with this by electric current.

The first input winding switch and the second input winding switch are for selecting to connect switch.

Embodiment

It is constant to set the secondary output current, and secondary voltage changes two times transformer.

As Fig. 3, winding 2 and 4 each minutes 4 five equilibrium, form 8 winding segments, respectively draw 5 terminals and link on the corresponding fixed contact of dish type rotary switch, switch contact is interconnected on the moving contact K.

When two K switch forwarded 1 to, two windings were all in parallel, and the number of turn is minimum, and secondary voltage is the highest, the capacity maximum, and primary current is I m, winding current is 1/2Im.

When two K switch forward 2 to, two winding 1-2 series connection, winding 2-5 parallel connection.The effective working turns of winding of primary coil increases by 1/4, and the electromotive force of secondary coil descends 20%, and operating current is 0.8Im among the winding 1-2, and electric current is 0.4Im in other winding in parallel.

In the winding maximum operating currenbt all the time≤0.8Im, the corresponding minimizing of conductor cross-section.And the parallel branch electric current is little, and resistance loss decreases.

The utility model has the advantages that:

1. improve the winding operating efficiency, reduce lead and auxiliary material use quantity;

2. the winding operating current is little, reduces resistance loss;

3. transformer regulating wide ranges, purposes is wide;

4. winding construction compactness, relevant other materials is corresponding saving also.

Claims

1, two switch pressure regulating and capacitance regulating transformers, is characterized in that around primary coil and secondary coil in the outer felt of iron core:

Be wound with secondary coil output winding (6) at the outside unshakable in one's determination parcel, its skin be wound with first the input winding (2) and with first the input winding switch (3) be connected, also be wound with the second input winding (4) and be connected with the second input winding switch (5), the first input winding switch (3) and second is imported winding switch (5) and is interconnected;

The two ends of the first input winding (2) attach on the second input winding (4) by switch respectively, and switch ends is in parallel with winding respectively, and the winding outside is respectively equipped with terminals for series connection on the winding segments.

2, transformer according to claim 1 is characterized in that: the winding switch is for selecting to connect switch.