CN203150357U

CN203150357U - Heat pipe composite cooling type power transformer

Info

Publication number: CN203150357U
Application number: CN 201320167105
Authority: CN
Inventors: 王建
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-21
Filing date: 2013-03-21
Publication date: 2013-08-21
Anticipated expiration: 2023-03-21

Abstract

The utility model discloses a heat pipe composite cooling type power transformer which comprises a transformer shell, low voltage terminal, a high voltage terminal, an oil conservator, an iron core and a winding, wherein the low voltage terminal, the high voltage terminal, the oil conservator, the iron core and the winding are sequentially and fixedly connected to a base disc of the transformer, and the space inside the shell is filled with transformer oil. The heat pipe composite cooling type power transformer is characterized in that a heat pipe with a rectangular section is embedded in the iron core of the transformer, the radiating end of the heat pipe is located in the transformer oil, the radiating end of the heat pipe can also be located in an atmospheric environment at the top outside the shell, the heat-transfer capability of the heat pipe is strong, the heat-transfer capability of a single heat pipe can reach several kilowatts, cooling is completed with the technology, an original large steel flat pipe type radiator can be completely removed, the lateral size is reduced, and the dead load is lightened. The heat pipe composite cooling type power transformer solves the problem that the transformer is low in radiating speed, and particularly has excellent instant adaptive capacity on rapidly-increased composite changes.

Description

Heat pipe combined cooled power transformer

One, technical field

The utility model relates to the cooling technology field of power transformer, particularly uses the power transformer cooling technology of heat pipe.

Two, background technology

In the present oil-immersed power transformer cooling technology, it is the type of cooling that adopts oily natural circulation more than 80%, the caloric value of transformer core and the caloric value of winding pass to transformer oil, and oil is dispersed into heat in the atmospheric environment by the outer huge radiated rib tube bank of housing in the mode of free convection then.The heat radiation type of cooling of this form, the one, transformer self is laterally bulky, and very inconvenience of transportation maintenance is because leakage of oil or oil impregnate problem appear in huge fin flat tube weld seam in the equipment running process of being everlasting; Secondly, because the radiating efficiency of gilled tube is low, cause transformer oil temperature in service too high, cause that transformer oil insulation, performance descend, oil stream band point, coil windings be aging, not only make himself energy consumption increase, the reliability decrease of safe operation, but also can have influence on the stability of place electrical network; The 3rd, although at present relevant for utilizing gravity assisted heat pipe (thermal siphon) to be used in research in the cooling of transformer, also just rest on simple oil cooling but on the mode, and can only be vertically arranged gravity assisted heat pipe, still fundamentally do not solve pyrotoxin---effective cooling of transformer core and winding.For large oil immersed power transformer, utilize the gravity assisted heat pipe cold oil merely, its heat radiation reaction rate is not enough, the heat radiation needs of the rapid temperature rise that can not the increase of instantaneous adaptation transformer load brings.

Three, summary of the invention

The purpose of this utility model provides a kind of heat pipe combined cooled power transformer.The heat that iron core is produced directly conducts, and realizes the quick cooling of iron core.

Technical scheme 1: a kind of heat pipe combined cooled power transformer, comprise the transformer housing, low-voltage terminal on the transformer chassis is fixedly connected sequentially, HV Terminal, oil conservator, iron core, winding, the space is full of transformer oil in the housing, embeds the heat pipe of square-section in the transformer core, and the heat pipe heat radiation end is arranged in transformer oil.

Technical scheme 2: a kind of heat pipe combined cooled power transformer, comprise the transformer housing, low-voltage terminal on the transformer chassis is fixedly connected sequentially, HV Terminal, oil conservator, iron core, winding, the space is full of transformer oil in the housing, embeds the heat pipe of square-section in the transformer core, and the heat pipe heat radiation end is arranged in the atmospheric environment at the outer top of housing.

During enforcement: the rectangle heat pipe is embedded in the silicon steel sheet of iron core, with the silicon steel sheet stack of same model, closely contacts with the iron core silicon steel sheet with the periphery that guarantees the rectangle heat pipe in the coffin between the heat pipe, set up good main flux road simultaneously; The radiating end of this heat pipe can directly be immersed in the oil reservoir of headroom, also can directly extend to the outer certain altitude of upper shell, installs fin structure outward additional, and heat is directly transferred in the atmospheric environment.The beneficial effects of the utility model are: owing to adopt technique scheme, strong and the single tube heat-transfer capability of Heat Transfer of Heat Pipe on Heat Pipe ability can reach thousands of watts, adopts this technology to cool off, and can save original huge steel flat-tube formula radiator fully, both reduce the lateral dimension volume, alleviated deadweight again.Solved the slow problem of transformer heat radiation, the compound variation that has especially rapid increase has excellent instantaneous adaptive capacity.

Four, description of drawings:

Fig. 1 is the overall structure figure of a kind of heat pipe combined cooled power transformer of utility model, and in the figure, the heat pipe heat radiation end that is embedded in the iron core is arranged in transformer oil.

Fig. 2 is the another kind assembling mode of the novel middle heat pipe of this use, and the heat pipe heat radiation end that is embedded in iron core is arranged in the pattern of the atmospheric environment at the outer top of housing.

Five, embodiment

With reference to the accompanying drawings 1, a kind of heat pipe combined cooled power transformer shown in the accompanying drawing 2 comprises that silica gel sealing ring 5, iron core 6, winding 7, transformer chassis 8 between transformer housing 1, low-voltage terminal 2, HV Terminal 3, oil conservator 4, heat pipe 9 and the housing 2 are embedded in the heat pipe 9 of iron core 6 inside.Should at first the heat pipe of cooling iron core be got ready during construction, when iron core silicon steel sheet combination stack, heat pipe is embedded the position of design, and in the noncontact both sides of heat pipe and silicon steel sheet, superpose similar silicon steel sheet as lining, unaffected to guarantee main flux, finish assembling according to the conventional production process flow process of transformer then, at last silica gel sealing ring 5 is installed to the design tapping of transformer housing 1, such one can directly be cooled off iron core and winding, and a kind of heat pipe combined cooled power transformer that again can cold oil has just been finished.

Claims

1. heat pipe combined cooled power transformer, comprise the transformer housing, low-voltage terminal on the transformer chassis is fixedly connected sequentially, HV Terminal, oil conservator, iron core, winding, the space is full of transformer oil in the housing, it is characterized in that embedding in the transformer core heat pipe of square-section, and the heat pipe heat radiation end is arranged in transformer oil.

2. heat pipe combined cooled power transformer, it is characterized in that comprising the transformer housing, low-voltage terminal on the transformer chassis is fixedly connected sequentially, HV Terminal, oil conservator, iron core, winding, the space is full of transformer oil in the housing, embeds the heat pipe of square-section in the transformer core, and the heat pipe heat radiation end is arranged in the atmospheric environment at the outer top of housing.