CN204441037U

CN204441037U - A kind of high overload transformer

Info

Publication number: CN204441037U
Application number: CN201520151618.8U
Authority: CN
Inventors: 彭朝德; 王元东; 王涛; 陈占怀
Original assignee: Intelligent Electric Co Ltd Of Ping Gao Group
Current assignee: Intelligent Electric Co Ltd Of Ping Gao Group
Priority date: 2015-03-18
Filing date: 2015-03-18
Publication date: 2015-07-01
Anticipated expiration: 2025-03-18

Abstract

The utility model relates to a kind of high overload transformer, comprise the transformer body with long side surface and short side, the long side surface of described transformer body is provided with the main fin of fuel tank, the short side of transformer body is provided with the secondary fin of fuel tank, full oil duct is provided with in transformer body, and sandwiched one deck winding conducting wire between two-layer full oil duct, the width of full oil duct is not less than 10mm; The high overload transformer that the utility model provides, winding winding arrangement adopts two-layer full oil duct press from both sides one deck winding conducting wire, the width of full oil duct is not less than 10mm, makes wire at overload water conservancy diversion adstante febre by fully contact rapid convective heat radiation inside and outside transformer oil.

Description

A kind of high overload transformer

Technical field

The utility model relates to 10kV distribution transformer technical field, specifically a kind of high overload transformer.

Background technology

At present, the distribution transformer that rural power grids use does not possess high overload serviceability, in the seaonal load peak period such as busy farming season, the Spring Festival, once there is the overlond running of long period, can burn distribution transforming, lead to major accident thus.

By analyzing, the leading indicator that distribution transformer high overload runs is temperature rise, and namely in fuel tank, high oil temperature can reduce device insulation property, shortens service life, increases running wastage, and even causing trouble or accident occur.Therefore, the oil temperature how reduced when transformer overload runs is the key solving the operation of distribution transforming high overload.

Utility model content

The purpose of this utility model be run by analysis and solve transformer high overload heating, heat transfer, heat radiation key factor and parts, a kind of high overload transformer is provided.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is:

A kind of high overload transformer, comprise the transformer body with long side surface and short side, the long side surface of described transformer body is provided with the main fin of fuel tank, the short side of transformer body is provided with the secondary fin of fuel tank, full oil duct is provided with in transformer body, and sandwiched one deck winding conducting wire between two-layer full oil duct, the width of full oil duct is not less than 10mm;

The main fin of described fuel tank is chip fin;

The secondary fin of described fuel tank is corrugated fins.

The beneficial effects of the utility model:

The high overload transformer that the utility model provides, winding winding arrangement adopts two-layer full oil duct press from both sides one deck winding conducting wire, the width of full oil duct is not less than 10mm, makes wire at overload water conservancy diversion adstante febre by fully contact rapid convective heat radiation inside and outside transformer oil;

The high overload transformer that the utility model provides, by increasing main fin and secondary fin in oil tank of transformer surrounding, increases considerably the area of dissipation of fin and extraneous air, ensure that the space compensation that oil expands with heat and contract with cold when overload hot operation simultaneously;

The high overload transformer that the utility model provides, significantly improves the heat-sinking capability of transformer under natural environment, and makes transformer possess high overload ability, and namely 2 times of rated loads can run 2h.

Accompanying drawing explanation

Fig. 1 the utility model structural front view;

Fig. 2 the utility model structure side view;

Fig. 3 the utility model winding conducting wire structural representation;

Fig. 4 the utility model winding conducting wire structure vertical view;

Reference numeral: 1, transformer body, 2, the main fin of fuel tank, 3, the secondary fin of fuel tank, 4, full oil duct, 5, winding conducting wire.

Embodiment

Below in conjunction with embodiment, the utility model is further elaborated.

As shown in the figure: a kind of high overload transformer, comprise the transformer body 1 with long side surface and short side, the long side surface of described transformer body 1 is provided with the main fin 2 of chip fuel tank, the short side of transformer body 1 is provided with the secondary fin 3 of corrugated fuel tank, full oil duct 4 is provided with in transformer body 1, and sandwiched one deck winding conducting wire 5 between two-layer full oil duct 4, the width of full oil duct 4 is not less than 10mm;

Increase the fuel tank main fin 2(chip heat radiation of transformer long side surface) with the fuel tank secondary fin 3(corrugated fins of short side), make transformer oil that case inner top temperature is higher and the lower abundant natural circulation cooling of oil of temperature of lower, reduce the oil temperature of transformer; The full oil duct 4 of the two-layer winding of winding conducting wire 5+ that winding is at least wound around by one deck forms, and wire is pressed from both sides with two-layer full oil duct 4 middle, and transformer oil can take away coil heat fast by natural circulation;

Winding winding arrangement adopts two-layer full oil duct press from both sides the structure of one deck winding conducting wire, the width of full oil duct is not less than 10mm, makes wire at overload water conservancy diversion adstante febre by fully contact rapid convective heat radiation inside and outside transformer oil; By increasing fin (main fin+secondary fin) in oil tank of transformer surrounding, increasing considerably the area of dissipation of fin and extraneous air, ensure that when overload hot operation the space compensation that oil expands with heat and contract with cold simultaneously;

The utility model makes transformer possess high overload ability, and namely 2 times of rated loads can run 2h.

Claims

1. a high overload transformer, comprise the transformer body (1) with long side surface and short side, it is characterized in that: the long side surface of described transformer body (1) is provided with the main fin of fuel tank (2), the short side of transformer body (1) is provided with the secondary fin (3) of fuel tank, full oil duct (4) is provided with in transformer body (1), and sandwiched one deck winding conducting wire (5) between two-layer full oil duct (4), the width of full oil duct (4) is not less than 10mm.

2. high overload transformer as claimed in claim 1, is characterized in that: the main fin of described fuel tank (2) is chip fin.

3. high overload transformer as claimed in claim 1, is characterized in that: the secondary fin (3) of described fuel tank is corrugated fins.