CN2363362Y

CN2363362Y - Low loss short casing electric furnace transformer

Info

Publication number: CN2363362Y
Application number: CN 99232837
Authority: CN
Inventors: 张国志; 苏永亮; 唐秧发
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-11
Filing date: 1999-02-11
Publication date: 2000-02-09
Anticipated expiration: 2009-02-11

Abstract

The utility model relates to a low loss short box electric furnace transformer which comprises a casing, and an iron core, a winding and a voltage regulating switch of an existing electric furnace transformer. The utility model is characterized in that the voltage regulating switch is fixedly installed under a casing cover plate of the outer side of a high-voltage winding, and the distance between the cover plate and the iron core can be reduced by 300 mm to 500 mm to form a short box casing; thus, the loss and the reactance of a leading wire which follows the short box casing to be shortened are decreased. The utility model has the advantages of high efficiency, high overload capacity and low cost. In addition, more than 20 % of transformer oil and a lot of copper and steel materials can be saved, so the utility model also has the advantages of weight reduction and convenient transportation and installation.

Description

Low-loss short casing furnace transformer

The utility model provides a kind of low-loss short casing furnace transformer.

At present, the tap changer in the furnace transformer structure all is to be fixed under the cover plate of outer casing of top unshakable in one's determination, and the distance between cover plate and iron core is big, first and second lead-in wire is long, has increased lead-in wire loss, reactance, causes transformer efficiency to reduce, overload capacity is poor, and has increased production cost.

The purpose of this utility model is in order to overcome above-mentioned weak point, and a kind of loss that reduces to go between is provided, the efficient height, and overload capacity is strong, the low-loss short casing furnace transformer that cost is low.

The purpose of this utility model is achieved in that low-loss short casing furnace transformer comprises shell, and iron core, winding, the tap changer of existing furnace transformer is characterized in that tap changer is fixed under the cover plate of outer casing in the high pressure winding outside.

Fig. 1 is the utility model structural representation.

Now illustrated embodiment is made detailed description to the utility model in conjunction with the accompanying drawings.

Low-loss short casing furnace transformer comprises shell 1, and iron core 2, winding 3, the tap changer 4 of existing furnace transformer, tap changer 4 are fixed on the cover plate 5 times of the shell 1 in the high pressure winding outside.

The utility model is owing to adopt above architecture advances, tap changer is fixed under the cover plate of outer casing in the high pressure winding outside, distance between cover plate and iron core can reduce 300mm-500mm and make the short casing shell, the loss of the lead-in wire that reduces thereupon to shorten, reactance, the efficient height, overload capacity is strong, cost is low, can save transformer oil and reach a large amount of steel, steel more than 20%, alleviate weight, convenient transportation, installation.

Claims

1, a kind of low-loss short casing furnace transformer comprises shell (1), and iron core (2), winding (3), the tap changer (4) of existing furnace transformer is characterized in that tap changer (4) is fixed under the cover plate of outer casing (5) in the high pressure winding outside.