CN2340072Y - Material-saving transformer - Google Patents

Abstract

The utility model relates to a material-saving transformer, which is composed of an upper and a lower dihedral yokes and three columns sheathed with three-phase coils and is characterized in that a dihedral angle alpha (125 DEG < alpha < = 130 DEG) is formed at the plane of the silicon-steel sheets of the upper and the lower yokes of each single-phase iron core. Compared with the three-phase transformer with a yoke-broken three-column type plane structure, the material-saving transformer saves 15 percent of material and saves 1/4 yoke-cutting and iron-arranged time and the height of the yokes can be fallen down to 1/2 of the width of the biggest piece. The utility model is favorable for the integral transportation of a large power transformer and can be used for small and middle type power transformers, particularly for large types.

Description

Material-economizing transformer

The utility model is to belong to a kind of material-economizing transformer, and it is especially relevant with the angle of material-saving (energy) iron core of △ (dihedral) yoke stereochemical structure three-phase transformer.

The utility model people's three-balanced-weight three-junction transformer, the patent No.: 97105166.6.Though it has adopted super material-saving (energy) the principle angle of silicon steel sheet, than the disconnected yoke three-phase transformer material-saving 15% of planar structure three pillar type, the horizontal cost of equipment of cutting reduces 1/4, yoke cut, reduce when arranging the ironworker 1/4 and the yoke height reduce to the most large stretch of wide

But it does not adopt silicon steel sheet material-saving (energy) principle angle.

The utility model purpose is to adopt silicon steel sheet material-saving (energy) principle angle, cuts, when arranging the ironworker, designs a kind of material-economizing transformer for further reducing yoke.

The utility model is by △ (dihedral) yoke up and down and about being between △ (dihedral) yoke, and three posts that are with three-phase coil respectively constitute, the dihedral angle β that the plane, silicon steel sheet place of two posts of its three sides is mutually (120 ° ± 5 °) is characterized in that the dihedral angle α (125 °＜α≤130 °) that the plane, silicon steel sheet place with the yoke up and down of homonymy is mutually is silicon steel sheet material-saving (energy) principle angle.The dihedral angle ω (120 °≤ω≤150 °) that is mutually of the plane, place of the yoke 1 of its iron core homonymy and the silicon steel sheet of post 2 intersections 3 wherein.Wherein the yoke 1 of its iron core homonymy is overlap joints that silicon steel sheet has folding ω degree angle with the junction 3 of post 2.

The utility model has adopted silicon steel sheet material-saving (energy) principle angle, it than three-balanced-weight three-junction transformer save yoke cut, when arranging the ironworker

Its disconnected yoke three pillar type planar structure three-phase transformer material-saving 15%, yoke is cut, is saved 1/4 when arranging the ironworker.The yoke height is reduced to the most large stretch of wide

It has created advantage for the transportation of large-scale power transformer.Post is except circle, can have oval and 60 ° of rhombuses with hexagonal angle.

Fig. 1 is the front view of the utility model iron core, the 1st, and yoke, the 2nd, post, the 3rd, yoke and post intersection, ω is the dihedral angle that the plane, silicon steel sheet place of yoke 1 and post 2 is mutually.Fig. 2 is the vertical view of the single-phase iron core of the utility model, and β is the dihedral angle that the plane, silicon steel sheet place of single-phase iron core left and right sides post 2 is mutually, and γ is the angle of shear of the silicon steel sheet of yoke 1.Fig. 3 is the end view of the single-phase iron core of the utility model, and α is the dihedral angle that the plane, silicon steel sheet place of yoke 1 up and down is mutually.Fig. 4 is a front view of the present utility model, the 1st, and yoke, the 2nd, post, ω are the dihedral angles that the plane, silicon steel sheet place of yoke 1 and post 2 is mutually, the 4th, three-phase coil.Fig. 5 is a vertical view of the present utility model, the 1st, and yoke, the 4th, three-phase coil.

The utility model is embodiment with the non-maintaining three-phase power transformer of oil immersion.Slitting line is cut into the required band material of each level width with silicon steel sheet.By two oblique shearing machines and the cut-to-length that the flanging frock is formed, will be with material to be cut into every grade of varying length, the base angle is the isosceles trapezoid sheet of γ (50 ° ± 5 °).After the annealing, and on the limit at its folding ω degree angle, end, to satisfy the needs of row's iron.Bring the interior up and down folder of a side and be placed on row's iron platform, and use the cushion block pad that becomes 30 ° of angles with platform good.For the silicon steel sheet that prevents post sinks, use the cushion block pad identical good with yoke.Under row during the silicon steel sheet of yoke and two posts, put an amount of lacquer (glue) in their junction 3 and will descend yoke and post to be stained with to be integral.Till first iron core is sequenced.Put the outer up and down folder of a side then well, and will inside and outside up and down folder and yoke clamping with clamping plate.Put on and draw screw rod, outer folder is suitably locked up and down, and such first side iron core has just sequenced.Then ranked second side, the 3rd side.After all having arranged, put into the baker oven dry, allow lacquer (glue) solidify.After the curing, take out from baker, after the cooling, three side iron cores are carried out yoke join in twos, post two two-phases have also just been formed △ (dihedral) yoke stereochemical structure tri-phase iron core.Locking is outer folder bolt down, in down under the folder assistance, will descend △ (dihedral) yoke and three post clampings and fuses.Bringing the pad pin is placed on down on three angles of △ (dihedral) yoke with preventing the wood block filler that iron core sinks.And fill up pin and wood block filler and down outer folder with the bolt handle and lock.Remove the clamping plate of yoke up and down, go up the silicon steel sheet of inside and outside folder and last yoke.With three following insulating washers, three-phase coil and three last insulating washers are enclosed within respectively on three posts.Again insert the silicon steel sheet of △ (dihedral) yoke, and put an amount of lacquer (glue) with the junction 3 of post so that last △ (dihedral) yoke is stained with post at last yoke.And put inside and outside folder well, clamping screw is last △ (dihedral) yoke and three post clampings and link into an integrated entity.Draw screw rod inside and outside putting on, inside and outside up and down folder linked together, locking nut, by inside and outside folder, about cushion block on the insulating washer be pressed in the two ends of three-phase coil tightly.Handle the joint and the tap of three-phase coil well and be fixed on the binding clip.Weld with wind electrode holder lead-in wire and high-low pressure joint and tap.The high-low pressure lead-in wire is welded with the high-low pressure screw rod, and high-voltage connection tap and voltage are reconciled switch and are connected.Fetch fuel tank cap and hang screw rod and last outer folder locking with three.Bring high-low pressure porcelain vase and insulation cushion and put into the respective aperture locking of fuel tank cap.The high-low pressure screw rod is placed in the high-low pressure porcelain vase, has filled up insulation cushion, screw rod and porcelain vase are locked with nut.Again transformer core is put into the baker inner drying below, make each test point reach corresponding insulation resistance.In baker, take out, after the cooling that loosening nut is fastening, should put into fuel tank to transformer core as early as possible.Alignment fuel tank cap and fuel tank edge will covers and the fuel tank edge welds with electric welding.Fill with oil in the fuel tank, deposit the long enough time till the gas in the transformer is all discharged.Handle sealing well, and do various tests and test before dispatching from the factory, just can dispatch from the factory after qualified.

Claims (3)

1. a material-economizing transformer is by △ (dihedral) yoke up and down and about being between △ (dihedral) yoke, and three posts that are with three-phase coil respectively constitute, the dihedral angle β that the plane, silicon steel sheet place of two posts of its three sides is mutually (120 ° ± 5 °) is characterized in that the dihedral angle α (125 °＜α≤130 °) that the plane, silicon steel sheet place with the yoke up and down 1 of homonymy is mutually.

2. material-economizing transformer as claimed in claim 1 is characterized in that the dihedral angle ω (120 °≤ω≤150 °) that the plane, place of yoke 1 and the silicon steel sheet of post 2 intersections 3 of its iron core homonymy is mutually.

3. as claim 1 or the described material-economizing transformer of claim 2, it is characterized in that the intersection 3 of yoke 1 and post 2 of its iron core homonymy is the overlap joint that silicon steel sheet has folding ω degree angle.

Images