CN202839277U

CN202839277U - Transformer

Info

Publication number: CN202839277U
Application number: CN201220518756.1U
Authority: CN
Inventors: 王瑞林; 王越龙
Original assignee: SHENYANG TIANWEI ELECTRONIC EQUIPMENT Co Ltd
Current assignee: SHENYANG TIANWEI ELECTRONIC EQUIPMENT Co Ltd
Priority date: 2012-09-28
Filing date: 2012-09-28
Publication date: 2013-03-27
Anticipated expiration: 2022-09-28

Abstract

The utility model discloses a transformer and relates to the improvement of a transformer structure. The transformer has the advantages of being high in safety, strong in heat dissipation capacity, and low in cost. The transformer comprises a transformer main body and a radiator which is around the transformer main body. The transformer is structurally characterized in that the transformer main body is arranged in a box body in the middle of the radiator, a main cavity is formed between the inner wall of the box body and the transformer main body, a heat dissipation cavity is formed between the outer wall of the box body and the inner wall of the radiator, transformer oil is arranged in the main cavity, and water is arranged in the heat dissipation cavity.

Description

A kind of transformer

Technical field

The utility model relates to the improvement of transformer device structure.

Background technology

Existing transformer can be divided into three-phase three-limb and three-phase five-limb by core construction and all be planar alignment.There is following shortcoming in existing transformer.

1, the length of iron circuit is different, and no-load current ABC three-phase is not identical.

2, need artificial closed assembly after lamination process slitting and horizontal the cutting, consuming time many, very large artificial disturbance factor is arranged.

3, because lamination is the oriented silicon steel disc, so need to adopt complete oblique 45 ° of seams at the turning of magnetic circuit, be the high resistance area of magnetic circuit, and have the distortion phenomenon of magnetic flux, can increase transformer noise and no-load current and no-load loss to a certain extent again.

4, the lattice of silicon steel sheet inside is orderly regularly arranged, the silicon steel sheet of laminated transformer through horizontal cut with slitting after, owing to be subject to the effect of shear stress and destroyed, cause no-load loss to rise near near the lattice the clip.Through the loss value of silicon steel sheet of actual measurement different in width, estimation suffers the lattice width of broken ring between 6～8 millimeters, and more the percentage of polycrystalline lattice is also just larger for the shearing program of silicon steel sheet process in the unit are, and the silicon steel sheet of laminated transformer is through horizontal cutting and slitting.

5, the iron core of laminated transformer is that blocks of closed assembly forms, and is not whole, and mechanical strength is low, needs to clamp and colligation.The silicon steel sheet stack of this " distributing " is dressed up the geometric shape that also will guarantee integral core behind the iron core, as: the depth of parallelism that perpendicularity, core limb unshakable in one's determination can not have curved, the unshakable in one's determination four jiaos diagonal deviation of wave to be not more than 2mm, three stems is not more than 1mm, closed assembly unshakable in one's determination can not wrong dropping fraction.

6, the radiator of transformer and transformer body are same cavity configuration, and the heat exchange medium in the radiator is the transformer oil in the oil tank of transformer.Transformer oil is the transformer special hot exchange media of continuing to use for many years, and advantage is good insulating, mobile good, but that ring is protected requirement is more and more higher along with various countries, and transformer oil has become problem anxious to be resolved to the pollution of environment.And is water as a kind of cheap heat-conducting medium of the most easily obtaining why not in the radiator of applicable transformer? although water is conducting medium, as long as resolve in the heat radiation of the transformer that " electricity separation " just can use water.

7, the radiator wall thickness is less than the fuel tank wall thickness of transformer body, therefore the fuel tank of radiator and transformer body can not adopt the steel plate manufacturing of specification of the same race, the thermal stress that the steel plate of different-thickness produces is also different, and fuel tank and the radiator of existing transformer body are structure as a whole, do not have buffer unit between the two, so processing technology is very complicated.

8, consider the problem that expands after transformer oil is heated in the existing transformer device structure in fuel tank, radiator need to bear certain coefficient of expansion, repeatedly bear swollen stress under compression after the several years, ooze, the hidden danger of leakage of oil also can be increasing.

9, existing box-type substation is generally order font or Chinese character pin-shaped arrangement, and independent transformer room is arranged, whole equipment all on the ground, take up an area the space greatly, not attractive in appearance.

10, the connection set of existing transformer is generally Y, yn0, and this kind bind mode triple-frequency harmonics does not have path, and power supply quality is bad.

11, the iron core of laminated transformer is that blocks of closed assembly forms, the closed assembly mode is horizontal closed assembly, need iron core " to stand up " after closed assembly is good, because iron core is not whole, rise and to guarantee whole geometric shape unshakable in one's determination immediately, guarantee that again silicon steel sheet unshakable in one's determination can not cause lattice damage by local pressure.

Summary of the invention

The utility model is exactly for the problems referred to above, and a kind of safe, heat-sinking capability is strong and cost is low transformer is provided.

For achieving the above object, the utility model adopts following technical scheme, the utility model comprises transformer body and centers on the radiator of transformer body, its structural feature transformer body is arranged in the casing at radiator middle part, be main chamber between cabinet wall and the transformer body, be the heat radiation chamber between cabinet exterior and the radiator inwall; Be provided with transformer oil in the described main chamber, heat radiation is provided with water in the chamber.Transformer integral body is divided into main chamber and attached chamber: bear transformer oil and device body in the main chamber, attached chamber is the water-cooled inverting chamber (heat radiation chamber) of transformer.

As a kind of preferred version, transformer body described in the utility model adopts the three-phase stereo volume unshakable in one's determination.

As another kind of preferred version, three-phase stereo described in the utility model volume is unshakable in one's determination to be that three rectangle single frame iron cores of arc transition form by the turning, and three single frame long limits unshakable in one's determination join in twos and form cross section is that the three-phase stereo volume of equilateral triangle is unshakable in one's determination; On three pairs of long limits that join in twos, all be wound with coil.

As another kind of preferred version, radiator described in the utility model is arranged on underground.

As another kind of preferred version, box body wall described in the utility model and radiator adopt steel plate of the same race.

As another kind of preferred version, heat radiation described in the utility model chamber is the heat radiation chamber that makes through vacuum treatment.

Secondly, three-phase stereo volume iron core described in the utility model is that the volume that one 800 ℃ of annealing link of increase make behind rolled forming unshakable in one's determination is unshakable in one's determination.

In addition, steel plate described in the utility model is the stainless-steel sheet that scribbles anticorrosive coat.

The utility model beneficial effect: the utility model is arranged on transformer body in the casing at radiator middle part, form a minute cavity configuration, namely main chamber is transformer oil, the heat radiation chamber is water, separate fully in main, heat radiation chamber, pressure in the main chamber is greater than the pressure in the heat radiation chamber, can avoid like this along with the transformer prolongation of running time, and the heat radiation chamber is to the danger of main chamber infiltration; Reduce simultaneously the use amount of transformer oil, namely reduced cost, and improved the externally ability of heat radiation of transformer.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described further.The utility model protection range not only is confined to the statement of following content.

Fig. 1 is the utility model structural representation.

Fig. 2 is that the utility model uses state diagram.

Fig. 3 is the utility model three-phase stereo volume core construction schematic diagram.

Fig. 4 is the vertical view of Fig. 3.

Among the figure, 1 is that radiator, 2 is that transformer body, 3 is that box-type substation, 4 is that melt pit, 5 is that coil, 6 is the single frame iron core.

Embodiment

As shown in the figure, the utility model comprises transformer body 2 and centers on the radiator 1 of transformer body 2, transformer body 2 is arranged in the casing at radiator 1 middle part, is main chamber between cabinet wall and the transformer body, is the heat radiation chamber between cabinet exterior and the radiator inwall; Be provided with transformer oil in the described main chamber, heat radiation is provided with water in the chamber.

Described transformer body 2 adopts the three-phase stereo volume unshakable in one's determination.The three-phase stereo volume D that adopts unshakable in one's determination, the yn11 connection set, triple-frequency harmonics has path, and anti-short circuit capability is better than and adopts Y, the transformer of yn0 connection set, and D, the transformer of yn11 connection set has certain filter action; Therefore power supply quality is stable, and anti-laod unbalance ability is strong.Secondly, adopt volume form unshakable in one's determination, after the slitting uncoiling is finished, namely adopt the special equipment coiling iron-core, mechanization degree is high.In addition, because iron core rolls and forms, so there are not 45 ° of mitres of laminated core, do not have the high resistance area of magnetic circuit, do not have the distortion phenomenon of magnetic flux; The process procedure that does not have clamper for iron core standing is not deposited technique and is damaged.

Described three-phase stereo volume is unshakable in one's determination to be that three rectangle single frame iron cores 6 of arc transition form by the turning, and three single frame unshakable in one's determination 6 long limits join in twos and form cross section is that the three-phase stereo volume of equilateral triangle is unshakable in one's determination; On three pairs of long limits that join in twos, all be wound with coil 5.Traditional plane formula iron core has 4 complete yokes, and three-phase stereo volume volume iron unshakable in one's determination only has 6 " half yokes " to be equivalent to 3 complete yokes, so than reducing about 20% on the stacked silicon steel sheet consumption.The length of magnetic path of three-phase is fully equal, and the magnetic flux of three-phase is identical, and the three-phase no-load electric current is also identical.The turning of adopting arc transition is than reducing about 6% on stacked " right angle " silicon steel sheet consumption.

Described radiator 1 is arranged on underground.The transformer room can be located in the melt pit 4, the occupation of land space is little, is conducive to reduce the land seizure area, and does not affect the convenience of height switching manipulation.

Described box body wall and radiator 1 adopt steel plate of the same race; Simple in structure, welding easily.

Described heat radiation chamber is the heat radiation chamber that makes through vacuum treatment; Improve heat-exchange capacity.

Described three-phase stereo volume iron core is to increase together 800 ℃ of volume iron cores that the annealing link makes behind rolled forming unshakable in one's determination; Make silicon steel sheet suffer brokenly that in production in advance the lattice energy of ring obtains orderly recovery.

Described steel plate is the stainless-steel sheet that scribbles anticorrosive coat; Effectively avoided the generation along with the increase Leakage in Transformer danger in operation age.

Be understandable that, more than about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection range of the present utility model.

Claims

1. transformer, comprise transformer body (2) and around the radiator (1) of transformer body (2), it is characterized in that transformer body (2) is arranged in the casing at radiator (1) middle part, be main chamber between cabinet wall and the transformer body, be the heat radiation chamber between cabinet exterior and the radiator inwall; Be provided with transformer oil in the described main chamber, heat radiation is provided with water in the chamber.

2. described a kind of transformer according to claim 1 is characterized in that described transformer body (2) adopts the three-phase stereo volume unshakable in one's determination.

3. described a kind of transformer according to claim 2, it is characterized in that described three-phase stereo volume unshakable in one's determination be that three rectangle single frames (6) unshakable in one's determination of arc transition form by the turning, the long limit of three single frame iron cores (6) joins in twos and forms the three-phase stereo volume iron core that cross section is equilateral triangle; On three pairs of long limits that join in twos, all be wound with coil (5).

4. described a kind of transformer according to claim 1 is characterized in that described radiator (1) is arranged on underground.

5. described a kind of transformer according to claim 1 is characterized in that described box body wall and radiator (1) adopt steel plate of the same race.

6. described a kind of transformer according to claim 5 is characterized in that described steel plate is the stainless-steel sheet that scribbles anticorrosive coat.