CN202523506U

CN202523506U - 220KV-grade power transformer cooled by heat pipe

Info

Publication number: CN202523506U
Application number: CN2012200760627U
Authority: CN
Inventors: 刘立忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-03
Filing date: 2012-03-03
Publication date: 2012-11-07
Anticipated expiration: 2022-03-03

Abstract

The utility model discloses a 220KV-grade power transformer cooled by a heat pipe. The 220KV-grade power transformer comprises a transformer body, a radiation device and a transformer oil tank with a tank cover, wherein the transformer body is positioned in the transformer oil tank filled with transformer oil. The 220KV-grade power transformer is characterized in that the radiation device is the heat pipe, and the heat pipe passes through the tank cover of the oil tank from the upper part of the oil tank, and is inserted into the oil tank. Heat can be quickly transferred out of the oil tank through the heat pipe to keep oil temperature stable, the 220KV-grade power transformer has the characteristics of high heat transfer efficiency and small size, the problem about the radiation of an indoor transformer is solved, the aims of soundproofing, noise reduction, energy saving and environmental protection are fulfilled, and the service life of the transformer is prolonged.

Description

A kind of 220KV level power transformer with the heat pipe cooling

Technical field

The utility model relates to a kind of transformer, relates in particular to a kind of power transformer.

Background technology

Power transformer exists no-load loss and load loss accomplishing a certain voltage transitions is become in the process of another electric pressure, therefore, must be accompanied by the generation of heat.The oil of oil-immersed type transformer plays dual parts insulation and heat radiation.3/4 power of the increase of transformer loss and capacity is proportional, and the increase of oil tank of transformer cooling surface is only proportional with 1/2 power of capacity.220KV level power transformer electric pressure is high, capacity is big.Thereby, along with the increase of transformer capacity, have only the suitable type of cooling of employing could guarantee distributing of heat.In order to solve the heat dissipation problem of high-power transformer, except that reduce the wastage as far as possible, also need select the cooler of high cooling efficiency simultaneously for use, to improve radiating effect to reduce the heating.At present, 220KV level power transformer structure adopts heat abstractors such as radiating tube and gilled radiator basically, and the more type of cooling has two kinds of air-cooled and water-cooleds, and forced air cooler is used the most general.This structure self is laterally bulky; Transportation and maintenance are all very inconvenient; Heat abstractor such as radiating tube and the gilled radiator heat efficiency is lower; Transformer is often because oily temperature rise is too high, causes transformer oil decreasing insulating, oil flow electrification, coil is aging even cause accidents such as fire for transformer, blast.Adopt water-cooled or air-cooled in addition, air-heater, water pump, oil pump etc. are auxiliary etc., and cost of equipment and operating cost are all very high, and the waste electric energy, and noise is big.Therefore improve oily circulating transformer cooling structure, improve its cooling effectiveness, no matter from energy-saving and cost-reducing, still prolong transformer useful life, reduce hot accident aspect, all will bring the huge social economic benefit.

The utility model content

The purpose of the utility model is in order to solve the deficiency of above-mentioned prior art, a kind of technical scheme to be provided, utilizing the heat pipe with efficient heat transfer that 220KV level power transformer is dispelled the heat; Improved cooling effectiveness, improved the heat dispersion of transformer, occupied ground is few; Volume is little, and operating cost is low, energy savings; Noise is little, prolongs the useful life of transformer.

A kind of 220KV level power transformer with heat pipe cooling of the utility model comprises transformer body, heat abstractor and is provided with the oil tank of transformer of case lid that transformer body is positioned at the oil tank of transformer that is full of transformer oil, it is characterized in that heat abstractor is a heat pipe.

As preferably, heat pipe is the case lid through fuel tank from fuel tank top, inserts in the fuel tank.Heat pipe is positioned at the transformer top, replaces the sidepiece that original fin is positioned at fuel tank, has reduced the place of the installation of transformer greatly, and weight reduction simultaneously improves radiating effect, to reduce volume.

Heat pipe structure and operation principle: typical heat pipe is made up of shell, wick and end cap.Fill with an amount of hydraulic fluid after heat pipe is pumped into negative pressure, make in the wick capillary porous material of being close to inside pipe wall to seal behind the full of liquid.One end of pipe is evaporation section (bringing-up section), and the other end is condensation segment (cooling section), can arrange the adiabatic section according to application need two sections centres.When an end of heat pipe is heated, the vaporization of liquid evaporation in the capillary wick, steam flows to the other end and emits heat and condense into liquid under small pressure.Liquid leans on the effect of capillary force to flow back to evaporation section along porous material again, so circulates endlessly, and heat reaches the other end from an end of heat pipe.Can as required this heat pipe be made various shapes, its circulation power is that capillary materials and liquid combine formed capillary force.

As preferably, heat pipe is a gravity assisted heat pipe.

When heat pipe is in the ground gravity field, circulating of its working medium will mainly receive gravity effect.When its inclination or when vertically placing, evaporating section is in the below, and then the liquid working substance of condensation can be back to evaporation section by gravity up, Here it is gravity assisted heat pipe.Gravity assisted heat pipe and premium properties gravity assisted heat pipe thereof are to rely on the gravitational field effect of intraductal working medium and form and circulate.Owing to not be used in and add wick in the pipe; Its manufacturing cost reduces greatly; And its working medium can water, because glassware for drinking water has good physical property and economy heat pipe working temperature generally between O～25O ℃, so it has obtained using widely in practical engineering application.It has following good characteristic: (1) the very high inner main vapour of hydraulic fluid, liquid phase leaned on of thermal conductivity gravity assisted heat pipe becomes heat transfer, and thermal resistance is very little, therefore has the very high capacity of heat transmission.Test shows that gravity assisted heat pipe is compared with the radiating efficiency of the identical copper pipe of physical dimension, and the efficient raising reaches about 2O times.(2) simple in structure, easily manufactured, with low cost, and the life-span is long, can use about 2O generally speaking.(3) start-up temperature is low, when thermal source is 3O ℃, can start, and the temperature difference is high-power more high more, therefore is fit to very much be applied in the transformer.

The beneficial effect of the utility model is:

1, innovation transformer radiating mode, auxiliary equipment such as cancellation cooling fan, water pump, oil pump reduce operation expense, energy-saving and noise-reducing, protection environment.

2, heat-pipe radiating apparatus need not add power, open-air convection current natural heat dissipation, and transformer overall operation noise falls more than 10% in the operation noiseless.

3, heat-pipe radiating apparatus is saved and is taken up an area of, and the mounting means of condenser is flexible.

The utility model can be gone out the heat transferred in the fuel tank rapidly through heat pipe; To keep the oil temperature stable; Have heat transfer efficiency height, the less characteristics of volume, not only solved the indoor transformer heat dissipation problem, and reached sound insulation and noise reduction; The purpose of energy savings, protection environment has prolonged useful life of transformer.

Description of drawings

Below in conjunction with accompanying drawing and embodiment utility model is further specified.

Fig. 1 is the contour structures sketch map of the utility model embodiment.

Among the figure: 1, fuel tank 2, low-tension bushing 3, bushing 4, transformer oil 5, gravity assisted heat pipe.

Embodiment

As shown in Figure 1, the utility model embodiment is a kind of 220KV level power transformer with the heat pipe cooling, comprises fuel tank 1 casing.The lead-out wires of coil of transformer body is drawn out to the outside through bushing 3, low-tension bushing 2 and shunting switch respectively.The effect of bushing shell for transformer is the inner high and low pressure of transformer to be guided to fuel tank 1 outside, not only conduct lead-in wire insulation against ground, and the effect of undertaking anchor leg.In the oil tank of transformer 1 is transformer body, and transformer body is immersed in the transformer oil 4, and gravity assisted heat pipe 5 is the case lid through fuel tank from fuel tank top, inserts in the fuel tank 1.Gravity assisted heat pipe 5 is positioned at the transformer top, replaces the sidepiece that original fin is positioned at fuel tank, has reduced the place of the installation of transformer greatly, and weight reduction simultaneously improves radiating effect, to reduce volume.Transformer when transformer upper strata oil temperature produces the temperature difference, can be gone out the heat transferred in the fuel tank rapidly through gravity assisted heat pipe 5 in use; To keep the oil temperature stable; Have the heat transfer efficiency height, volume is less, the characteristics that cost is low have prolonged useful life of transformer.Gravity assisted heat pipe 5 is made simply than other kind heat pipe low price, places several and gets final product.Every heat pipe all is an absolute construction, does not have the leakage of oil problem, and the life-span is long.Gravity assisted heat pipe himself is an autonomous system to good environmental adaptability, can make arbitrary shape, is fit to be applied in the various environment, and this is its prime advantage place just.

The foregoing description is the explanation to the utility model, is not the qualification to the utility model, and any structure after simple transformation on the utility model basis all belongs to the protection range of the utility model.

Claims

1. 220KV level power transformer with heat pipe cooling; Comprise transformer body, heat abstractor and be provided with the oil tank of transformer of case lid; Transformer body is positioned at the oil tank of transformer that is full of transformer oil; It is characterized in that heat abstractor is a heat pipe, heat pipe is the case lid through fuel tank from fuel tank top, inserts in the fuel tank.