CN206471198U - A kind of novel electric power bushing for transformer - Google Patents
A kind of novel electric power bushing for transformer Download PDFInfo
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- CN206471198U CN206471198U CN201720101339.XU CN201720101339U CN206471198U CN 206471198 U CN206471198 U CN 206471198U CN 201720101339 U CN201720101339 U CN 201720101339U CN 206471198 U CN206471198 U CN 206471198U
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- transformer
- conducting rod
- electric power
- heat
- novel electric
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Abstract
The utility model is related to a kind of novel electric power bushing for transformer, purpose is can not to carry out the technical problem of quick heat loss through conduction cooling to inside transformer heat for current electric power transformer insulated sleeve pipe, a kind of novel insulating sleeve is provided, the sleeve pipe fast and effeciently can drain into the partial heat conduction in the heat and oil tank of transformer produced by transformer coil outside transformer, the effectively temperature rise of reduction power transformer.Insulating sleeve (4) is mainly made up of umbrella shape external insulation (5) and conducting rod 6, conducting rod (6) internal cavities set liquid working medium (8), and the die layer of one layer of capillary structure, the multi-functional that the utility model insulating sleeve (4) radiates with insulation, anchor leg, cooling.
Description
Technical field
The utility model is related to power transformer technical field, relates in particular to a kind of novel electric power transformer insulation barrier
Pipe.
Background technology
Bushing for transformer is to guide to the lead of inside transformer high and low pressure lateral coil outside fuel tank, so typically
Bushing for transformer play a part of insulation and anchor leg.It is known that the heat produced by transformer mostlys come from
The iron core and coil of transformer, and the lead of transformer coil is drawn through bushing for transformer, such as transformer insulation barrier
Heat produced by transformer high and low pressure lateral coil directly quickly can be conducted and be discharged to outside transformer by pipe, can quickly be had
The temperature rise of effect reduction inside transformer, makes bushing for transformer while having insulation, anchor leg, the function of cooling radiating.
Utility model content
The purpose of this utility model is that inside transformer heat can not be carried out for current electric power transformer insulated sleeve pipe
The technical problem of quick heat loss through conduction cooling is there is provided a kind of novel electric power bushing for transformer, and the sleeve pipe can be fast and effeciently
Partial heat conduction in heat and oil tank of transformer produced by transformer coil is drained into outside transformer, effectively reduction electricity
The temperature rise of power transformer.
To solve the above problems, the utility model is adopted the following technical scheme that：A kind of novel electric power bushing for transformer,
Mainly it is made up of umbrella shape external insulation and conducting rod.
Umbrella shape external insulation mainly plays heat conduction and insulation, by high heat conductive insulating special ceramic material, such as AIN ceramics systems
Into.Its insulating properties to make between transformer lead-out wire and lead-out wire and transformer case between insulate, its high thermal conductivity
Heat can be efficiently conducted, is combined while its umbrella shape is big umbellule, and corrugated shape is done in the bottom surface of umbrella, to increase radiating surface
Product, meets the requirement of various dielectric levels and increasing heat radiation area.
Conducting rod plays the cooling of conductive and heat loss through conduction simultaneously：First, the lead-out wire of transformer coil passes through conduction
Bar is connected with outside line, second, the heat of transformer coil and the heat of inside transformer are rapidly and efficiently passed by conducting rod
To extraneous air.Conducting rod makes the form of normal temperature heat pipe, and using the principle of heat pipe, inside heat pipe is mainly by hydraulic fluid
Vapour, liquid phase-change heat transfer, thermal resistance very little, therefore with the very high capacity of heat transmission, and the metal phase ratio such as silver, copper, aluminium, Unit Weight
Heat pipe can transmit the heat of several orders of magnitude more.Therefore, conducting rod is hollow, and negative pressure state is pumped into inside, and it is appropriate to be filled with
Liquid working medium, the low boiling point of this liquid working medium, readily volatilized in the state of negative pressure, because inside transformer temperature is generally
80 DEG C or so, so selection boiling point is 65 DEG C or so and is advisable, there is larger thermograde, being capable of efficient operation.Conducting rod one end
For evaporation ends, other end is condensation end, according to heat pipe principle, conducting rod be disposed vertically cooling radiating efficiency it is higher, its evaporate
End is stretched into inside oil tank of transformer under, and condensation end is contacted with the umbrella shape external insulation or air ambient of bushing shell for transformer upper.
When conducting rod evaporation ends are heated, the liquid working medium rapid vaporization inside conducting rod, steam flows to cold under the power of thermal diffusion
Solidifying end, and heat is discharged in cold end condensation, heat is through umbrella shape external insulation or is immediately discharged to surrounding air.Discharge liquid after heat
The condensation of shape working medium becomes liquid again, and evaporation ends are flowed back under gravity, and so circulation is more than, until conducting rod two ends temperature phase
Deng (now steam thermal diffusion stopping).This circulation is quickly carried out, and heat, which can be conducted continuously, to be come, and is reached
The purpose of heat transfer cooling.
The bar wall of conducting rod is made up of the material that thermal conductivity is high, resistivity is low, such as：Copper, to ensure good conduction and lead
Hot property.The evaporation ends of conducting rod set connecting plate, the lead-out wire to connect transformer coil；The condensation end of conducting rod opens spiral shell
Line, extraction wire is fixed using nut.
Brief description of the drawings
Accompanying drawing 1 is a kind of novel electric power bushing for transformer schematic diagram of the utility model embodiment；
Accompanying drawing 2 is the utility model embodiment power transformer internal structure schematic diagram；
Code name is marked in accompanying drawing is：It is oil tank of transformer 1, (high pressure, low pressure) transformer coil 2, lead-out wire 3, (high pressure, low
Pressure) insulating sleeve 4, umbrella shape external insulation 5, conducting rod 6, bar wall 7, liquid working medium 8, terminal plate 9.
Embodiment
It is readily apparent to make the technical solution of the utility model, creation characteristic, reaching effect, with reference to being specifically illustrating,
The utility model is expanded on further.
It is a kind of novel electric power bushing for transformer schematic diagram of the utility model embodiment referring to accompanying drawing 1, shown in figure.
Insulating sleeve 4 is mainly made up of umbrella shape external insulation 5 and conducting rod 6.
Umbrella shape external insulation 5 mainly plays insulation and heat conduction, is made of High-heat-conductiviinsulation insulation material AIN ceramics.AIN ceramics
It is a kind of special ceramic material that developed recently gets up, its actual thermal conductivity is more than 200Wm-1·K-1, resistivity exceedes
2x1011Ω .cm, are higher by common ceramics, while having superior thermal conductivity and insulating properties concurrently.It is made of AIN ceramic materials
Umbrella shape external insulation 5 makes to insulate between transformer lead-out wire and between lead-out wire and transformer case, and can be by conducting rod evaporation ends
The heat of absorption is efficiently conducted into surrounding air.Its umbrella shape is that big umbellule is combined, and corrugated shape is done in the bottom surface of umbrella
With increasing heat radiation area.
Conducting rod 6 plays the cooling of conductive and heat loss through conduction simultaneously：First, the lead-out wire 3 of transformer coil 2 is by leading
Electric pole 6 is connected with outside line, second, the heat of transformer coil 2 and the heat of inside transformer are quick high by conducting rod 6
Effect passes to extraneous air.Conducting rod 6 makes the form of normal temperature heat pipe, and conducting rod inner hollow is simultaneously pumped into negative pressure state, is filled with
The extremely low volatile liquid working medium 8 of boiling point, because inside transformer temperature is generally 80 DEG C or so, so liquid working medium 8 is selected
Boiling point is 65 DEG C or so and is advisable, and has larger thermograde, being capable of efficient operation.The present embodiment may be selected to use pure water, including
Distilled water, deionized water, water boiling point when pressure is 101325Pa (standard atmospheric pressure) is 100 DEG C, but is 24998Pa in pressure
When (negative pressure), its boiling point is only 65 DEG C.One end of conducting rod 6 is evaporation ends, and other end is condensation end, in order to increase heat
Heat loss through conduction efficiency conducting rod 6 is disposed vertically, and its evaporation ends is stretched into inside oil tank of transformer 1 under, and condensation end is upper, with umbrella
Shape external insulation 5 or air ambient contact.Transformer produces heat when working, when temperature rises to 65 DEG C, the evaporation of conducting rod 6
The heat that end obtains transmitting from transformer coil 2 in inside transformer, its internal liquid working medium 8 will be heated at 65 DEG C
Vaporization, heat, the umbrella shape external insulation 5 that heat is made through High-heat-conductiviinsulation insulation material AIN ceramics are discharged in condensation end condensation
Drain into surrounding air, or drain into a straightforward manner in surrounding air, reach the purpose of heat transfer cooling.Discharge liquid after heat
The condensation of shape working medium 8 becomes liquid again, and evaporation ends are flowed back under gravity, and so circulation is more than, until the two ends temperature of conducting rod 6
Degree is equal.This circulation is quickly carried out, and heat, which can be conducted continuously, to be come.Heat absorption, the heat release of object are phases
To, it is every with the presence of temperature difference when, just necessarily there is heat at high temperature to the phenomenon transmitted at low temperature.General transformer
The internal temperature of fuel tank 1 is up to more than 80 DEG C, and transformer outside atmosphere temperature is only up to 40 DEG C or so, and the temperature difference is big, more
Improve the heat loss through conduction efficiency of conducting rod 6.To improve the resistance to frost of the pure water as liquid working medium 8, using addition matter
The aqueous solution for the methyl carbitol that fraction is 20%~30% proportioning is measured, the antifreeze temperature of liquid working medium 8-35 can be reduced to
DEG C, make liquid working medium 8 readily flowed, obtain more preferable using effect.
The bar wall 7 of conducting rod 6 is made up of the superior material of electric conductivity and thermal conductivity, such as by copper, copper alloy, aluminium, aluminium alloy,
And the manufacture of the conductive material such as aluminum pipe or stainless steel pipe outer surface copper plate.The evaporation ends of conducting rod set connecting plate 9, are used to
Connect the lead-out wire 3 of transformer coil；The condensation end processing screw thread of conducting rod, extraction wire is fixed using nut.It is conductive
The inner surface of the bar wall 7 of bar 6 can set the die layer of one layer of capillary structure, and the condensation of increase liquid working medium 8 becomes liquid again, in weight
The efficiency of evaporation ends is flowed back under the double acting of power and capillary structure, the radiating effect of conducting rod 6 is improved.
It is the utility model embodiment power transformer internal structure schematic diagram, transformer wire referring to accompanying drawing 2, shown in figure
Circle 2 is immersed in oil tank of transformer 1, and transformer coil 2 is connected by lead-out wire 3 with the terminal plate 9 of insulating sleeve 4, insulation sleeve
Pipe 4 guides to the lead of transformer coil 2 outside of oil tank of transformer 1, and insulating sleeve 4 makes between lead-out wire and lead-out wire and change
Insulated between depressor shell.The evaporation ends of insulating sleeve 4 are stretched into inside oil tank of transformer 1 under simultaneously, condensation end upper, with
Umbrella shape external insulation 5 or the air ambient contact of bushing shell for transformer, the heat of the inside of oil tank of transformer 1 and transformer coil 2 is passed
Lead radiating and drain into surrounding air.Insulating sleeve 4 has insulation, anchor leg, the function of cooling radiating simultaneously.
Utility model effect
The lead-out wire of general one connection transformer coil of bushing for transformer current-carrying part, other end and external insulation
Contact, or directly it is exposed in atmosphere, the utility model dexterously using normal temperature heat pipe high heat conduction and flash heat transfer performance should
In bushing for transformer, the evaporation ends equivalent to heat pipe connect the lead-out wire of transformer coil, absorb heat, condensation end
Contacted with external insulation, or directly it is exposed heat is drained into surrounding air in atmosphere, reach transformer coil fast and effeciently
The effect that heat conduction inside produced heat and oil tank of transformer is drained into outside transformer, effectively reduces power transformer
Temperature rise, make bushing for transformer at the same have insulation, anchor leg, cooling radiating function.
Claims (7)
1. a kind of novel electric power bushing for transformer, it is characterised in that insulating sleeve（4）Including umbrella shape external insulation（5）With lead
Electric pole（6）, described conducting rod（6）For the internal metal tube housing with closed cavity, conducting rod（6）One end for evaporation
End, other end is condensation end, conducting rod（6）Internal closed cavity has liquid working medium（8）, conducting rod（6）Evaporation ends and company
Fishplate bar（9）It is fixedly connected, connecting plate（9）Lead-out wire to connect transformer coil（3）, conducting rod（6）Condensation end it is upper
Screw thread is provided with section partial outer face, wire is fixedly connected with using nut；Conducting rod（6）Condensation end hypomere part suit it is solid
Surely there is umbrella shape external insulation（5）, described umbrella shape external insulation（5）Its umbrella shape is the overlapped combination of some big umbellules, and the bottom of umbrella
Corrugated shape is done in face, with increasing heat radiation area.
2. a kind of novel electric power bushing for transformer according to claim 1, it is characterised in that described conducting rod
（6）Inside closed cavity be set to normal pressure or negative pressure state.
3. a kind of novel electric power bushing for transformer according to claim 1, it is characterised in that described conducting rod
（6）Inside closed cavity liquid working medium（8）For pure water or distilled water or deionized water.
4. a kind of novel electric power bushing for transformer according to claim 1, it is characterised in that described conducting rod
（6）Inside closed cavity liquid working medium（8）For the methyl carbitol aqueous solution.
5. a kind of novel electric power bushing for transformer according to claim 1, it is characterised in that described conducting rod
（6）Inside closed cavity be set to coreless structure or have cored structure, it is described to there is cored structure to be in conducting rod（6）Bar wall
（7）Inner surface setting have the die layer of one layer of capillary structure.
6. a kind of novel electric power bushing for transformer according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that
Described conducting rod（6）The one of which metal-back of layers of copper stainless steel pipe is coated with for copper, copper alloy, aluminium, aluminium alloy, outer surface
Body.
7. a kind of novel electric power bushing for transformer according to claim 1, it is characterised in that outside described umbrella shape
Insulation（5）For AIN ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101339.XU CN206471198U (en) | 2017-01-25 | 2017-01-25 | A kind of novel electric power bushing for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720101339.XU CN206471198U (en) | 2017-01-25 | 2017-01-25 | A kind of novel electric power bushing for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206471198U true CN206471198U (en) | 2017-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201720101339.XU Active CN206471198U (en) | 2017-01-25 | 2017-01-25 | A kind of novel electric power bushing for transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783049A (en) * | 2017-01-25 | 2017-05-31 | 广西凯悦新源电力科技有限公司 | A kind of novel electric power bushing for transformer |
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2017
- 2017-01-25 CN CN201720101339.XU patent/CN206471198U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783049A (en) * | 2017-01-25 | 2017-05-31 | 广西凯悦新源电力科技有限公司 | A kind of novel electric power bushing for transformer |
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