CN2226798Y

CN2226798Y - Ring Triphase transformer

Info

Publication number: CN2226798Y
Application number: CN 94244489
Authority: CN
Inventors: 顾梦柯
Original assignee: Individual
Current assignee: Gu Mengke
Priority date: 1994-11-10
Filing date: 1994-11-10
Publication date: 1996-05-08
Anticipated expiration: 2004-11-10

Abstract

The utility model relates to a ring-typed three-phase transformer composed of an iron core and coils, wherein, the iron core is composed of three single-ring wound iron cores combined into a three-square ring-shaped column body. Three first and secondary coils are respectively wound on three iron columns. Each single-ring wound iron core is made of multilevel wound iron cores coiled. Each iron column of the iron core of the ring-typed three-phase transformer is composed of the two iron columns of different single-ring wound iron cores combined. The transformer has the advantages of small volume, little material consumption, low heat generation, little iron consumption and noiselessness.

Description

Ring-type three-phase transformer

It is ring-type three-phase transformer that the utility model provides a kind of three-phase transformer of new construction, is used for power transmission and distribution.

Present existing three-phase transformer mostly is core type and involute formula three-phase transformer, and all there are some shortcomings in these two kinds of transformers.The core structure of core type three-phase transformer is three post iron that plane formula is a three-phase transformer and four sections yokes in same plane, so each phase magnetic circuit is unequal, when no-load running, three-phase magnetic circuit and three-phase current are unbalanced, and the heart type structure iron core is more with material, the problem that has material and energy waste, involute formula three-phase transformer, though when no-load running, the balanced iron core of having realized three-phase magnetic circuit and three-phase current lacks than core type transformer with the material amount, but its no-load current is big, electrical noise has increased.Therefore its application is restricted and uses general not as core type transformer.

The purpose of this utility model is to propose a kind of novel ring-type three-phase transformer, overcomes the shortcoming of existing three-phase transformer, reduce three-phase transformer with material amount and iron loss, realize when unloaded the equilibrium of three-phase magnetic circuit and three-phase current and noiseless operation.

Major technique content of the present utility model is, this ring-type three-phase transformer is made up of iron core and coil, iron core is the ring-type cylinder, combine by three monocycle volume iron cores, be triangular ring-type cylinder, on three post iron, each monocycle volume iron core is rolled into multistage volume iron core respectively for three primary and secondary coils, each post iron of ring-type three-phase transformer iron core all is synthetic by two post iron of different monocycle volume iron cores, and the yoke of each monocycle volume iron core is the yoke of ring-type column core.

Technique effect of the present utility model is, this ring-type three-phase transformer, because iron core is the ring-type cylinder, three post iron and yoke be not in same plane, be triangular shape cylinder, therefore each that has overcome that three post iron of core type three-phase transformation and four sections yokes cause in same plane be the unequal and shortcoming such as involute formula three-phase transformer no-load current is big, electrical noise is big of magnetic circuit mutually, has advantages such as volume little, few with the material amount, low heating, iron loss are little, noiseless.Ring-type three-phase transformer reduces iron core with material amount 20% than core type three-phase transformer; Reduce iron core with material amount 70% than involute formula three-phase transformer.Iron loss reduces 20% than core type three-phase transformer, reduces 15% than involute formula three-phase transformer.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a positive diagrammatic sketch of the present utility model;

Fig. 3 is a vertical view of the present utility model.

1 triangular ring-type column core, 2 iron core column, 3 coils, 4 monocycles volume iron core, 5 oil ducts.

Realize preferred plan of the present utility model as shown in the figure, this ring-type three-phase transformer mainly is made up of iron core 1 and coil 3, iron core is a triangular ring-type cylinder, form by three monocycle volume iron cores 4, be Mitsubishi's ring-type cylinder as Fig. 1, primary and secondary coil 3 is respectively on three post iron, the multistage volume iron core of each monocycle volume iron core 4 usefulness is rolled into, each post iron of ring-type three-phase transformer iron core all is synthetic by two post iron of different monocycle volume iron cores, and the yoke of each monocycle volume iron core is the yoke of ring-type column core.

The iron core that the iron core of this ring-type three-phase transformer also can be used for polyphase transformer equates as 6 phases, 12, each post iron of the iron core of polyphase transformer is still by two post iron of two different monocycles volume iron cores synthetic, and the yoke of each monocycle volume iron core constituted the yoke of heterogeneous ring-type column core.

The monocycle of this ring-type three-phase transformer volume iron core 4 can have two kinds of structures, and a kind of to be every grade be a volume, another kind be multistage be a volume; Three post iron of iron core are chimeric by the multistage volume iron core of half garden cylindricality monocycle of two symmetries; There are a plurality of oil ducts at the chimeric place of two multistage volume iron cores of monocycle in the post iron.

The production technology of ring-type three-phase transformer is that testboard → vanning oiling → go into warehouse for finished product is handled → gone up to iron core blanking → Wound core → spiral circle → oven dry.

Above-mentioned seven links all are special process systems.Core material still adopts cold-reduced silicon sheet, if use mechanical blanking device, provide the length and the width of every grade of silicon steel sheet according to design, can only descend every grade to be the bar shaped material of a volume, every grade billot is rolled up by designing requirement, then all volume iron is inlayed into monocycle volume iron core by level, utilize clamping piece and base, with three monocycle volume iron core group synthesis of cyclic column cores, if use the laser blanking device, provide the length and the width of every grade of silicon steel sheet according to design, can be once multistage down be the not wide banded bar shaped silicon steel sheet material of a volume, be rolled into monocycle volume iron core simultaneously in blanking, again with three monocycle volume iron core group synthesis of cyclic column cores.

The coil of this ring-type three-phase transformer is to carry out coiling on the post iron of ring-type column core.After winding the empire silk volume on the iron core column iron, earlier around high-tension coil, around intact high-tension coil, again around last empire silk volume, then, in coiling, handle the joint location of coil well around last low-voltage coil, joint and the tap of lead-in wire with the high and low pressure coil welded, and high-voltage connection tap and voltage-regulation switch are connected.Three high-tension coils are connected into △ shape, and three low-voltage lead circles are star proportionately.After wire winding is finished, send drying unit to and handle, oven dry is finished, last Insulation test platform, the oiling of the laggard luggage case of test passes, transfer oily exhaust to finish after, send combined test stand, qualified products are sent into warehouse for finished product.

According to designing requirement, but also production dry type ring-type three-phase transformer, production process is the same, but on technology the designing requirement difference, do not have the oiling process, directly serve combined test stand, qualified products are sent into warehouse for finished product.

Claims

1, ring-type three-phase transformer, form by iron core and coil, it is characterized in that, iron core is the ring-type cylinder, is combined by three monocycle volume iron cores, is triangular ring-type cylinder, three primary and secondary coils are respectively on three post iron, each monocycle volume iron core is rolled into multistage volume iron core, and each post iron of ring-type three-phase transformer iron core all is synthetic by two post iron of different monocycle volume iron cores, and the yoke of each monocycle volume iron core is the yoke of ring-type column core.

2, ring-type three-phase transformer according to claim 1, the iron core that it is characterized in that this ring-type three-phase transformer is 6 phases, 12 phases, each post iron of the iron core of polyphase transformer is still by two post iron of two different monocycles volume iron cores synthetic, and the yoke of each monocycle volume iron core constitutes the yoke of heterogeneous ring-type column core.

According to claim 1,2 described ring-type three-phase transformers, it is characterized in that 3, monocycle volume iron core can have two kinds of structures, a kind of to be every grade be a volume, another kind be multistage be a volume.

4, according to claim 1,2 described ring-type three-phase transformers, the post iron of iron core is chimeric by the multistage volume iron core of half garden cylindricality monocycle of two symmetries, and there is oil duct at the chimeric place of two multistage volume iron cores of monocycle in the post iron.