CN208256424U - A kind of heat convection oil-immersed type non-crystal alloy transformer - Google Patents

Abstract

A kind of heat convection oil-immersed type non-crystal alloy transformer, heat dissipation tank is provided with above fuel tank, heat dissipation box enclosure is provided with radiating fin outward, respiratory siphon has been set up at the top of heat dissipation tank, respiratory siphon and heat dissipation tank external communication, the side of the heat dissipation tank is provided with oil level indicator, fills in the heat dissipation box cavity of heat dissipation tank equipped with transformer oil；Convective cover is provided in fuel tank, convective cover is located at transformer core surrounding, there are gaps between convective cover and transformer core, there are cross oil-gap between tank bottoms below convective cover, convection tube is connected with above convective cover, convection tube is fed through top of oil-tank and communicates with the heat dissipation box cavity of heat dissipation tank, and return pipe is provided in heat dissipation cavity, and return pipe is communicated with the fuel tank inner chamber outside convective cover.The utility model provides a kind of heat convection oil-immersed transformer, and good heat dissipation effect, transformer overall volume is small, can effectively solve the heat dissipation problem of oil-immersed transformer.

Description

A kind of heat convection oil-immersed type non-crystal alloy transformer

Technical field

The utility model relates to a kind of transformer, especially a kind of heat convection oil-immersed type non-crystal alloy transformer belongs to Electrical equipment technical field.

Background technique

Oil-immersed transformer has many advantages, such as that at low cost, capacity is big, good insulation preformance, therefore is widely used in power train System, industrial and mining enterprises, traffic and various a departments such as civilian.For transformer during transmitting electric energy, inner surface can generate damage Consumption, wherein the loss generated by the resistance of conducting wire is related with load current and directly proportional to load current, this partition losses base It is converted into thermal energy on this, transformer coli winding temperature is caused to increase.Especially for high-power transformer, oil-immersed type transformer Interior transformer oil plays dual parts of insulation and heat dissipation.For the coil windings of transformer, especially low pressure winding due to Electric current is big when transformer station high-voltage side bus, and the heat of generation is more, temperature highest, the insulation performance of the insulating materials for manufacturing transformer It influences very big.The excessively high bulk life time for not only influencing transformer of temperature rise, and will affect the safe operation of transformer.The prior art Oil-immersed type transformer, generally take the mode that cooling fin is set on the outside of fuel tank to radiate, but the heat master of inside transformer It will be from semiconductor substrate, since the heating conduction of transformer oil itself is bad, so that outside the temperature at fuel tank center and fuel tank The temperature difference of side is very big, and heat-conducting effect is bad, and the setting radiator outside fuel tank, there is that structure is complicated, volume is heavy, raw Produce defect at high cost.

Summary of the invention

To solve the above problem in the prior art, the purpose of this utility model is that: a kind of heat convection oil immersed type is provided Amorphous alloy transformer, good heat dissipation effect, transformer overall volume is small, and the heat dissipation that can effectively solve oil-immersed transformer is asked Topic.

In order to achieve the above object, the technical solution adopted in the utility model are as follows: a kind of heat convection oil immersed type amorphous alloy Transformer, including fuel tank, HV Terminal, low-voltage terminal, high-tension coil winding, low-voltage coil winding and iron core, the inner cavity of fuel tank Transformer oil is filled, HV Terminal is connect with high-tension coil winding and low-voltage coil winding respectively with low-voltage terminal, high-tension coil Winding and low-voltage coil winding are wound around composition transformer core, transformer core on iron core and are immersed in the transformer oil in fuel tank It is interior, heat dissipation tank is provided with above the fuel tank, heat dissipation box enclosure is provided with radiating fin outward, has set up at the top of heat dissipation tank Respiratory siphon, respiratory siphon and heat dissipation tank external communication, the side of the heat dissipation tank is provided with oil level indicator, the heat dissipation box cavity of heat dissipation tank It inside fills equipped with transformer oil；Convective cover is provided in fuel tank, convective cover is located at transformer core surrounding, convective cover and transformer There are gaps between core, there are oil-gap is crossed between convective cover lower section and tank bottoms, are connected with convection tube above convective cover, Convection tube is fed through top of oil-tank and communicates with the heat dissipation box cavity of heat dissipation tank, is provided with return pipe in heat dissipation cavity, return pipe with it is right Fuel tank inner chamber outside stream cover communicates；Further, it is provided with hothouse at the top of the heat dissipation box cavity, is filled inside hothouse Equipped with desiccant, the respiratory siphon at the top of heat dissipation tank is connect with hothouse；Further, the intracavity bottom of the fuel tank is provided with heavy Room drops, and expansion chamber bottom is provided with bleeder plug；Further, the longitudinal cross-section of the expansion chamber is inverted trapezoid cross section.

The positive advantageous effects of the utility model are: by the way that the heat dissipation communicated with fuel tank is arranged above fuel tank Case, and convective cover is set in transformer core surrounding, the heat that transformer core generates heats the transformation in convective cover first Device oil makes hot oil rise to heat exchanger heat dissipation by convection tube, and transformer oil after cooling is back in fuel tank by return pipe, Since the oil in convective cover flows up, transformer oil after reflux by the clearance backflows of convective cover and tank bottoms extremely In convective cover, complete heat exchange convection circulation is formd, considerably increases heat exchange efficiency, and by respiratory siphon and heat dissipation tank Hothouse is set between interior, makes to enter the air inside heat exchanger by being dried, effectively prevents the moisture absorption of transformer oil Denaturalization phenomenon extends the maintenance period of equipment, and expansion chamber is arranged in tank bottoms, settles the dirt in transformer oil, impurity It is released to expansion chamber bottom by bleeder plug, extends the service life of transformer oil, expansion chamber is arranged to inverted trapezoidal, it is more sharp In the discharge of dirt.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model one embodiment.

Specific embodiment

In order to more fully explain the implementation of the utility model, the embodiment of the utility model presented below, these realities Applying example is only the elaboration to the utility model, does not limit the scope of the utility model.

It is attached in the figure, it is marked as 1. fuel tanks in conjunction with attached drawing to the further details of explanation of the utility model；2. heat dissipation tank； 3. respiratory siphon；4. sealing cover；5. expansion chamber；6. bleeder plug；7. return pipe；8. radiating fin；9. transformer core； 10. convection tube；11. hothouse.

It is as shown in the figure: a kind of heat convection oil-immersed type non-crystal alloy transformer, including fuel tank 1, HV Terminal, low-pressure end Son, high-tension coil winding, low-voltage coil winding and iron core, the inner cavity of fuel tank fill transformer oil, HV Terminal and low-voltage terminal It is connect respectively with high-tension coil winding and low-voltage coil winding, high-tension coil winding and low-voltage coil winding are wound around structure on iron core At transformer core 9, transformer core is immersed in the transformer oil in fuel tank, is provided with heat dissipation tank 2, heat dissipation tank above fuel tank Shell is provided with radiating fin 8 outward, is provided with hothouse 11 at the top of heat dissipation box cavity, fills inside hothouse equipped with drying Agent, the respiratory siphon 3 at the top of heat dissipation tank are connect with hothouse, and respiratory siphon and heat dissipation tank external communication, the side of heat dissipation tank is provided with Oil level indicator, oil level indicator are being not shown in the figure, and fill in the heat dissipation box cavity of heat dissipation tank equipped with transformer oil；Convection current is provided in fuel tank Cover 4, convective cover is located at transformer core surrounding, and there are gap, convective cover lower section and oil between convective cover and transformer core There are oil-gap is crossed between bottom portion, it is connected with convection tube 10 above convective cover, convection tube is fed through top of oil-tank and heat dissipation tank Heat dissipation box cavity communicate, return pipe 7 is provided in heat dissipation cavity, return pipe is communicated with the fuel tank inner chamber outside convective cover；Fuel tank Intracavity bottom be provided with the expansion chamber 5 of inverted trapezoidal, expansion chamber bottom is provided with bleeder plug 6.

For the utility model by the way that the heat dissipation tank communicated with fuel tank is arranged above fuel tank, the transformer oil of fuel tank internal is heated Backward top flowing, since convection tube is flat tube, interior flow diameter is big, after the oil after being heated enters heat exchanger by convection tube It exchanges heat with the external world, cold oil passes through convection tube again and is back in fuel tank, and the transformer oil of fuel tank internal forms heat convection, heat exchange effect Rate is significantly larger than traditional conduction heat exchange mode, and by the way that hothouse is arranged between in respiratory siphon and heat dissipation tank, makes to enter Air inside heat exchanger effectively prevents the moisture absorption denaturalization phenomenon of transformer oil, extends the dimension of equipment by being dried It protects the period, expansion chamber is arranged in tank bottoms, so that the dirt in transformer oil, impurity is deposited to expansion chamber bottom and is put by bleeder plug Out, expansion chamber is arranged to inverted trapezoidal, the more conducively discharge of dirt by the service life for extending transformer oil.

The utility model is set by the way that the heat dissipation tank communicated with fuel tank is arranged above fuel tank in transformer core surrounding Convective cover is set, the heat that transformer core generates heats the transformer oil in convective cover first, increase by convection tube hot oil It radiating to heat exchanger, transformer oil after cooling is back in fuel tank by return pipe, since the oil in convective cover flows up, Therefore the transformer oil after flowing back is by foring complete heat exchange in the clearance backflow to convective cover of convective cover and tank bottoms Convection circulation considerably increases heat exchange efficiency, and by the way that hothouse is arranged between in respiratory siphon and heat dissipation tank, makes to enter and change Air inside hot device effectively prevents the moisture absorption denaturalization phenomenon of transformer oil, extends the maintenance of equipment by being dried Period, tank bottoms are arranged expansion chamber, so that the dirt in transformer oil, impurity is deposited to expansion chamber bottom and put by bleeder plug Out, expansion chamber is arranged to inverted trapezoidal, the more conducively discharge of dirt by the service life for extending transformer oil.

After the embodiments of the present invention is described in detail, one of ordinary skilled in the art is clearly understood that, Various change and modification can be carried out by not departing under above-mentioned claim and spirit, all according to the technical essence of the utility model Any simple modification, equivalent change and modification to the above embodiments belong to the range of technical solutions of the utility model, And the utility model is also not only restricted to the embodiment of example in specification.

Claims (4)

1. a kind of heat convection oil-immersed type non-crystal alloy transformer, including fuel tank, HV Terminal, low-voltage terminal, high-tension coil around Group, low-voltage coil winding and iron core, the inner cavity of fuel tank fill transformer oil, HV Terminal and low-voltage terminal respectively with high-tension coil Winding and the connection of low-voltage coil winding, high-tension coil winding and low-voltage coil winding are wound around composition transformer core on iron core, Transformer core is immersed in the transformer oil in fuel tank, it is characterised in that: is provided with heat dissipation tank, heat dissipation tank above the fuel tank Shell is provided with radiating fin outward, and respiratory siphon, respiratory siphon and heat dissipation tank external communication have been set up at the top of heat dissipation tank, described The side of heat dissipation tank is provided with oil level indicator, fills in the heat dissipation box cavity of heat dissipation tank equipped with transformer oil；Convection current is provided in fuel tank Cover, convective cover are located at transformer core surrounding, and there are gap, convective cover lower section and fuel tanks between convective cover and transformer core There are oil-gap is crossed between bottom, it is connected with convection tube above convective cover, convection tube is fed through dissipating for top of oil-tank and heat dissipation tank Hot tank inner cavity communicates, and return pipe is provided in heat dissipation cavity, and return pipe is communicated with the fuel tank inner chamber outside convective cover.

2. a kind of heat convection oil-immersed type non-crystal alloy transformer according to claim 1, it is characterised in that: the heat dissipation It is provided with hothouse at the top of box cavity, is filled inside hothouse equipped with desiccant, the respiratory siphon and hothouse at the top of heat dissipation tank connect It connects.

3. a kind of heat convection oil-immersed type non-crystal alloy transformer according to claim 1, it is characterised in that: the fuel tank Intracavity bottom be provided with expansion chamber, expansion chamber bottom is provided with bleeder plug.

4. a kind of heat convection oil-immersed type non-crystal alloy transformer according to claim 3, it is characterised in that: the sedimentation The longitudinal cross-section of room is inverted trapezoid cross section.