CN202178138U

CN202178138U - Three-split rectifier transformer

Info

Publication number: CN202178138U
Application number: CN2011202961626U
Authority: CN
Inventors: 张书田; 宫树慧
Original assignee: SHANDONG CHEN YU ELECTRICAL CO Ltd
Current assignee: SHANDONG CHEN YU ELECTRICAL CO Ltd
Priority date: 2011-08-16
Filing date: 2011-08-16
Publication date: 2012-03-28
Anticipated expiration: 2021-08-16

Abstract

The utility model discloses a three-split rectifier transformer, which comprises an iron core, a high-voltage winding and a low-voltage winding. The iron core comprises an iron core column and an iron yoke, and the high-voltage winding and the low-voltage winding are respectively wound on the periphery of the iron core column. The low-voltage winding comprises a first low-voltage winding, a second low-voltage winding and a third low-voltage winding, the first low-voltage winding is close to the iron core column, and the second low-voltage winding and the third low-voltage winding are arranged along the axial direction of the iron core column. The high-voltage winding comprises a first high-voltage winding and a second high-voltage winding which are arranged along the axial direction of the iron core column, and the high-voltage winding is located on the outer side of the first low-voltage winding and the inner sides of the second low-voltage winding and the third low-voltage winding. The three-split rectifier transformer has large output impedance, and three groups of alternating current output with two different capacities can be provided by a single device. The three-split rectifier transformer can replace three common duplex winding rectifier transformers with two different capacities, reduce loss, improve efficiency and save investment and occupied area.

Description

Three cracking rectifier transformers

Technical field

The utility model relates to a kind of transformer, particularly relates to a kind of three cracking rectifier transformers.

Background technology

Rectifier transformer is a part important in the rectifying installation, is widely used among the power supply unit of frequency conversion speed-adjusting system.The frequent change of load, the frequent generation of impact load have proposed very high requirement for the design of rectifier transformer, for satisfying aspect performance demands such as mechanical strength, dielectric strength, temperature rise; Rectifier transformer in the existing frequency conversion speed-adjusting system generally adopt single transformer to separate unit rectifier or single transformer to the connected mode of many rectifiers, will cause power supply unit to take like this than large tracts of land, fund input increases; Loss is big, and the plant maintenance workload is big, and rectifier cell is in operation and usually produces overvoltage; Overcurrent punctures rectifier cell; Cause the commutating circuit short circuit, electric current increases, and burns the rectifier cell in another loop.Existing three cracking rectifier transformers on the market, three low pressure windings are all arranged vertically, and such three low pressure coil volume must equate; Connect three same loads; Load is not easy to generate secondary imbalance simultaneously, and local overheating is serious, causes damaging.

The utility model content

The utility model technical problem to be solved is: a kind of three cracking rectifier transformers are provided; When using as single device; Three groups of interchange outputs that comprise two kinds of different capabilities can be provided, and can reduce the wastage, improve effect and practice thrift investment and floor space.

For solving the problems of the technologies described above, the technical scheme of the utility model is: a kind of three cracking rectifier transformers comprise: iron core, said iron core comprise iron core column and iron yoke, and said iron core column and iron yoke are fixed together through connector; Low pressure winding and high pressure winding, said low pressure winding and high pressure winding are respectively around said iron core column; Said low pressure winding comprises the first low pressure winding, the second low pressure winding and the 3rd low pressure winding, and the said first low pressure winding is near said iron core column, and said second low pressure winding and the 3rd low pressure winding are along the axially-aligned of said iron core column; Said high pressure winding comprises the first high pressure winding and the second high pressure winding; The said first high pressure winding and the second high pressure winding are along the axially-aligned of said iron core column; Said high pressure winding is positioned at the outside of the said first low pressure winding and is positioned at the inboard of said second low pressure winding and the 3rd low pressure winding; The said first low pressure winding, the second low pressure winding and the 3rd low pressure winding are drawn one road low-voltage lead respectively, draw one road high-voltage connection after the said first high pressure winding and the second high pressure winding are connected in parallel; Be provided with the main insulation body between said high pressure winding and the said low pressure winding, be provided with the intermediate insulation body between said second low pressure winding and the 3rd low pressure winding and between the said first high pressure winding and the second high pressure winding; Make output impedance bigger like this, comprise and pass through impedance entirely, partly pass through impedance and division impedance, can prevent other commutating circuit overcurrent and burn out rectifier cell.

As a preferred implementation, said iron core is three post core type iron cores.

As a preferred implementation, said connector comprises the folder that is positioned at said iron core both sides, and said folder is fixed together said iron core through bolt.

As a preferred implementation, said intermediate insulation body comprises dead ring and cross-over block, the symmetrical at interval both sides up and down that are bonded in said dead ring of said cross-over block.

After having adopted technique scheme, the beneficial effect of the utility model is:

Because three low pressure windings of suit and two high pressure windings on the iron core column, first low pressure winding in every group of low pressure winding is near iron core, and the outside of said first low pressure winding is two high pressure windings; Said two high pressure windings are along the iron core column axially-aligned, and said two high pressure windings outside is second, third low pressure winding in every group of low pressure winding, and said second, third low pressure winding is along the iron core column axially-aligned; Like this, three low pressure windings can provide two kinds of different capabilities, can connect three loads of two kinds of different capabilities; Three low pressure windings can use separately, also can parallel connection use, when the low pressure winding uses separately; Rectifier transformer can connect three rectifiers of two kinds of different capabilities; Can substitute the logical double winding rectifier transformer of three Daeporis, and have bigger output impedance, the ability of limiting short-circuit current is arranged; When one road commutating circuit is breakdown; Can effectively prevent another road commutating circuit is breakdown to burn out,, can reduce the wastage, improve effect and practice thrift investment and floor space than using the logical transformer of three Daeporis.

Because said connector comprises the folder that is positioned at said iron core both sides, said folder is fixed together said iron core through bolt, so it is fixing to have avoided directly on iron core, holing, does not influence magnetic property.

Because said intermediate insulation body comprises dead ring and cross-over block, the symmetrical at interval both sides up and down that are bonded in said dead ring of said cross-over block so the both sides of cross-over block form the space, help heat radiation and immersion oil.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

Fig. 1 is a single-column structure arranged sketch map among the utility model embodiment;

Fig. 2 is the structural representation of three post overall alignment among the utility model embodiment;

Fig. 3 is the vertical view of Fig. 2;

Among the figure: 1, iron core; 2, insulation against ground body; 3, main insulation body; 4, intermediate insulation body; 41, dead ring; 42, cross-over block; A1, the first low pressure winding; A2, the second low pressure winding; A3, the 3rd low pressure winding; A1, the first high pressure winding; A2, the second high pressure winding.

Embodiment

With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of three cracking rectifier transformers, iron core 1 comprises iron core column and iron yoke; Said iron core column and iron yoke are fixed together through the connector (not shown); Said iron core 1 is three post core type iron cores, and said connector comprises the folder that is positioned at said iron core 1 both sides, and said folder is fixed together said iron core through bolt; It is fixing to have avoided directly on iron core 1, holing; Do not influence magnetic property, from this kind purpose, said iron core 1 also can be fixed up through other connected mode.

Low pressure winding and high pressure winding are respectively around said iron core column; Said low pressure winding comprises the first low pressure winding a1, the second low pressure winding a2 and the 3rd low pressure winding a3, and the said first low pressure winding a1 is near said iron core column, and said second low pressure winding a2 and the 3rd low pressure winding a3 are along the axially-aligned of said iron core column; Said high pressure winding comprises the first high pressure winding A1 and the second high pressure winding A2; The said first high pressure winding A1 and the second high pressure winding A2 are along the axially-aligned of said iron core column; Said high pressure winding is positioned at the outside of the said first low pressure winding a1 and is positioned at the inboard of said second low pressure winding a2 and the 3rd low pressure winding a3; The said first low pressure winding a1, the second low pressure winding a2 and the 3rd low pressure winding a3 draw one road low-voltage lead respectively, draw one road high-voltage connection after the said first high pressure winding A1 and the second high pressure winding A2 are connected in parallel; Be provided with main insulation body 3 between said high pressure winding and the said low pressure winding, be provided with intermediate insulation body 4 between said second low pressure winding a2 and the 3rd low pressure winding a3 and between the said first high pressure winding A1 and the second high pressure winding A2; Make output impedance bigger like this; Comprise pass through full impedance, partly pass through impedance and the division impedance; Can prevent other commutating circuit overcurrent and burn out rectifier cell, this arrangement mode of low pressure winding, the capacity of the first low pressure winding a1 can be different with the capacity of the second low pressure winding a2, the 3rd low pressure winding a3; Can provide three groups of two kinds of different capabilities to exchange output, thereby can connect three loads of two kinds of different capabilities.

Said intermediate insulation body 4 comprises dead ring 41 and cross-over block 42, the symmetrical at interval both sides up and down that are bonded in said dead ring 41 of said cross-over block 42, and the both sides of cross-over block 42 form the space, help heat radiation and immersion oil.

The utility model is not limited to above-mentioned embodiment, and all are based on the technical conceive of the utility model, and the structural improvement of having done all falls among the protection range of the utility model.

Claims

1. a cracking rectifier transformer comprises

Iron core, said iron core comprise iron core column and iron yoke, and said iron core column and iron yoke are fixed together through connector;

Low pressure winding and high pressure winding, said low pressure winding and high pressure winding are respectively around said iron core column; It is characterized in that:

Said low pressure winding comprises the first low pressure winding, the second low pressure winding and the 3rd low pressure winding, and the said first low pressure winding is near said iron core column, and said second low pressure winding and the 3rd low pressure winding are along the axially-aligned of said iron core column;

Said high pressure winding comprises the first high pressure winding and the second high pressure winding; The said first high pressure winding and the second high pressure winding are along the axially-aligned of said iron core column; Said high pressure winding is positioned at the outside of the said first low pressure winding and is positioned at the inboard of said second low pressure winding and the 3rd low pressure winding; The said first low pressure winding, the second low pressure winding and the 3rd low pressure winding are drawn one road low-voltage lead respectively, draw one road high-voltage connection after the said first high pressure winding and the second high pressure winding are connected in parallel;

Be provided with the main insulation body between said high pressure winding and the said low pressure winding, be provided with the intermediate insulation body between said second low pressure winding and the 3rd low pressure winding and between the said first high pressure winding and the second high pressure winding.

2. three cracking rectifier transformers as claimed in claim 1 is characterized in that: said iron core is three post core type iron cores.

3. three cracking rectifier transformers as claimed in claim 1, it is characterized in that: said connector comprises the folder that is positioned at said iron core both sides, said folder is fixed together said iron core through bolt.

4. three cracking rectifier transformers as claimed in claim 1 is characterized in that: said intermediate insulation body comprises dead ring and cross-over block, the symmetrical at interval both sides up and down that are bonded in said dead ring of said cross-over block.