CN113345685A - Self-expansion type high-heat-dissipation oil-immersed transformer - Google Patents
Self-expansion type high-heat-dissipation oil-immersed transformer Download PDFInfo
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- CN113345685A CN113345685A CN202110633933.4A CN202110633933A CN113345685A CN 113345685 A CN113345685 A CN 113345685A CN 202110633933 A CN202110633933 A CN 202110633933A CN 113345685 A CN113345685 A CN 113345685A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/105—Cooling by special liquid or by liquid of particular composition
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
Abstract
The invention discloses a self-expansion high-heat-dissipation oil-immersed transformer, which belongs to the technical field of transformers and can sense the temperature of transformer oil in different areas in an oil tank by arranging deflectable segmented heat dissipation fins and dividing the segmented heat dissipation fins into a plurality of units, when a local overheating phenomenon occurs, the repulsive magnetic capsules on corresponding heat dissipation parts automatically trigger the expansion phenomenon due to the higher temperature, so that a magnetic field is released for repulsion, the adjacent pair of heat dissipation parts generate the relative deflection phenomenon, so that the contact area between the heat dissipation parts and the outside air is increased, the preset outer expansion sheet is synchronously pulled by utilizing the deflection action to further extend and expand to the outside, the transformer oil in the area can be pumped to the outside along with the expansion of the outer expansion sheet for high-efficiency heat dissipation in a short time, and the components can recover the shape when the temperature is recovered to be normal, thereby realizing the temperature balance and high heat dissipation of the oil tank.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a self-expansion type high-heat-dissipation oil-immersed transformer.
Background
A transformer is a stationary electrical device used to transform ac voltage, current and transmit ac power. The electric energy transmission is realized according to the principle of electromagnetic induction. Transformers can be classified into power transformers, test transformers, instrument transformers, and transformers for special purposes, in terms of their use: the power transformer is necessary equipment for power transmission and distribution and power consumer distribution; the device is used for carrying out voltage withstand (boosting) test on electrical equipment by the test transformer; the instrument transformer is used for electrical measurement and relay protection (PT, CT) of a power distribution system; the transformer for special purposes comprises a furnace transformer for smelting, an electric welding transformer, a rectifier transformer for electrolysis, a small-sized regulating transformer and the like.
The cooling of the transformer means that heat generated by the transformer in operation is dissipated by a certain method, and the heat generated by the loss in the winding and the iron core must be dissipated in time when the transformer is in operation so as to prevent insulation damage caused by overheating. For a small-capacity transformer, the ratio of the external surface area to the volume of the transformer is relatively large, and heat can be dissipated by radiation and natural convection in a self-cooling mode. The self-cooling method is suitable for indoor small-sized transformers, and dry type transformers without oil immersion are generally adopted for preventing fire.
Since the loss of a transformer is proportional to its volume, as the capacity of the transformer increases, its volume and loss will increase to the third power of the core size, while the outer surface area only increases to the second power of the size. Therefore, large capacity transformer cores and windings are immersed in oil, and most distribution transformers and many power transformers use this oil-immersed self-cooling method. The transformer with smaller capacity can cool oil by lubricating the surface of the oil tank; in the medium-capacity transformer, the surface of an oil tank is required to be corrugated to increase a radiating surface, or a finned or flat pipe radiator is additionally arranged to ensure that oil circularly flows in the radiator; the surface of the large-capacity transformer oil tank is additionally provided with a radiation radiator, but the existing transformer oil tank is basically static and passive when radiating, the radiating effect is very limited, and the heat cannot be timely dissipated to the outside, so that the inside of the oil tank is locally overheated, the transformer oil is decomposed to generate gas, and the normal use of the transformer is influenced.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide a self-expansion high-heat-dissipation oil-immersed transformer, which can sense the temperature of transformer oil in different areas in an oil tank by arranging a deflectable split type heat dissipation fin and dividing the heat dissipation fin into a plurality of units, when a local overheating phenomenon occurs, a repulsion magnetic capsule on a corresponding heat dissipation part automatically triggers an expansion phenomenon due to the high temperature, so that a magnetic field is released for repulsion, a pair of adjacent heat dissipation parts generate a relative deflection phenomenon, so that the contact area between the heat dissipation parts and the outside air is increased, a preset outer expansion sheet is synchronously pulled by utilizing the deflection action to further extend and expand to the outside, the transformer oil in the area can be pumped to the outside along with the expansion of the outer expansion sheet for efficient heat dissipation in a short time, and all the components can recover the shape when the temperature is recovered to be normal, thereby realizing the temperature balance and high heat dissipation of the oil tank.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A self-expansion high-heat-dissipation oil-immersed transformer comprises an oil tank, wherein a plurality of deflection grooves which are uniformly distributed are formed in the outer end wall of the oil tank, the deflection groove is internally embedded with matched split type radiating fins, the split type radiating fins comprise a plurality of radiating parts, a plurality of isolating parts and a pair of leakage-proof films, the isolating parts are embedded and connected among the radiating parts, the heat dissipation part and the isolation part are connected between a pair of leakage-proof films which are connected with the side walls of the deflection grooves, a plurality of elastic wires which are uniformly distributed are also connected between the heat dissipation part and the side wall of the deflection groove, a plurality of expansion holes which are distributed in a staggered way with the deflection groove are also arranged on the outer end wall of the oil tank, the expansion hole is internally embedded and connected with a plurality of outer expansion pieces corresponding to the heat dissipation part, a plurality of uniformly distributed pull wires are connected between the front end of the heat dissipation part and the outer expansion pieces, and the left end and the right end of the heat dissipation part are respectively embedded and connected with a repelling magnetic capsule.
Furthermore, the repelling magnetic capsule comprises a repelling magnet, a thermal expansion layer and a magnetism isolating layer, wherein the repelling magnet is embedded inside the thermal expansion layer, the thermal expansion layer is connected with the outer side wall of the heat dissipation part, the magnetism isolating layer is coated on the outer surface of the thermal expansion layer, and the thermal expansion layer can expand after absorbing enough heat from the heat dissipation part, so that the magnetism isolating layer is pushed to synchronously expand to reduce the magnetic shielding effect, and the magnetic field of the repelling magnet can penetrate through to play a role.
Further, the magnetism isolating layer comprises a plurality of densely distributed magnetism isolating scales. The magnetic shielding scale is made of a high-permeability material, the magnetic shielding scales are distributed densely under a normal state to achieve a good magnetic shielding effect, the surface area is increased after the thermal expansion layer expands, the magnetic shielding scales are difficult to effectively cover and form gaps, and a magnetic field repelling magnets can penetrate through the gaps.
Furthermore, the repelling magnets on the adjacent split type radiating fins are in magnetic repulsion arrangement, and the thermal expansion layer is made of a material which expands when heated, so that the radiating parts in a high-temperature area repel each other, and the action of deflection and expansion is realized to improve the radiating effect.
Furthermore, a space surrounded by the deflection groove and the heat dissipation part is filled with a heat conduction fluid, the heat conduction fluid is a mixture of heat conduction oil and heat conduction sand with the mass ratio of 1:1, the heat conduction fluid is filled between the deflection groove and the heat dissipation part, a good heat conduction effect can be achieved, the heat dissipation channel is prevented from being interrupted or poor in effect due to the fact that a gap is formed between the heat dissipation part and the oil tank, meanwhile, the resistance of the heat conduction fluid is small, and the heat dissipation part can conduct deflection action smoothly.
Furthermore, the heat dissipation part is made of heat-conducting metal materials, the isolation part is made of flexible heat-insulating materials, the isolation part separates the heat dissipation part to achieve heat sensing of multiple areas, and the heat dissipation part still has efficient heat conductivity to dissipate heat on the oil tank to the external environment.
Further, outer inflation piece is including heat conduction net, elasticity heat conduction membrane and outer heat conduction piece, heat conduction net connection is downthehole in the inflation, elasticity heat conduction membrane only edge is in the heat conduction net and connects, outer heat conduction piece is connected in elasticity heat conduction membrane surface, and the heat conduction net plays the phenomenon of the setting effect avoiding the indent and takes place, can not disturb transformer oil's flow simultaneously, and elasticity heat conduction membrane and outer heat conduction piece all have the efficient heat conductivity, and wherein outer heat conduction piece plays the mechanical protection effect, avoids elasticity heat conduction membrane to receive the damage and leads to transformer oil's leakage, and outer inflation piece receives to drag and when expanding, and wherein elasticity heat conduction membrane mainly takes place inflation transformer oil and takes place to fill thereupon to directly contact with external environment through elasticity heat conduction membrane and realize the efficient heat dissipation.
Further, the number of the outer heat conducting fins can be one or a combination of a plurality of the outer heat conducting fins, theoretically, the larger the number of the outer heat conducting fins, the better the expansion effect is, the larger the contact area between the elastic heat conducting film and the outside is, the better the heat dissipation effect of the transformer oil in unit time is, but the lower the protection effect is, so that a proper selection is needed according to actual conditions.
Furthermore, the inner of the elastic heat conducting film is connected with a plurality of elastic guide rods which are evenly distributed, the elastic guide rods extend into the oil tank, one ends, far away from the elastic heat conducting film, of the elastic guide rods are connected with oil pushing balls, when the elastic heat conducting film expands and recovers the shape, the elastic guide rods can pull the oil pushing balls to move, the oil pushing balls can cause flowing of transformer oil when moving, temperature balance of the transformer oil is improved, meanwhile, high vibration performance of the oil pushing balls is utilized after expansion of outer expansion pieces, the transformer oil filled outwards can be forced to perform real-time interaction, and accordingly heat dissipation effect and range are improved.
Further, push away the oil ball and include outer hollow ball, cambered surface typing piece and a pair of elasticity and shake the pearl, cambered surface typing piece inlays and connects in outer hollow ball inner, and cambered surface typing piece sets up for the slope of elastic guide pole, and is a pair of elasticity shakes the pearl and fills respectively in outer hollow ball is by two spaces of cambered surface typing piece partitioned, utilizes the elasticity effect that elasticity shakes the pearl when pushing away oil ball migration to and the unbalanced characteristic of the relative elastic guide pole of cambered surface typing piece, can arouse elastic guide pole and push away the holistic high vibrations nature of oil ball, thereby force transformer oil to carry out the internal interaction, improve the temperature equilibrium, improve the radiating effect.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme can be through setting up the segmentation type radiating fin that can deflect, and cut apart into a plurality of units with it, thereby carry out the temperature perception to the transformer oil of different regions in the oil tank, when local overheat phenomenon takes place, the repulsion magnetic pocket on the corresponding radiating part is because the higher relation of temperature, independently trigger the expansion phenomenon, thereby release magnetic field and reject, adjacent a pair of radiating part takes place the relative deflection phenomenon, thereby increase the area of contact with the outside air between the radiating part, and utilize the synchronous pulling of deflection action outer inflation piece that sets up in advance to the external world further extend the inflation, the transformer oil in this region can be taken out to the external world along with the inflation of outer inflation piece and carry out the high-efficient heat dissipation of short time, above-mentioned part all can resume the shape when the temperature resumes normally, thereby realize the balanced and the high heat dissipating ability of temperature of oil tank.
(2) The repelling magnetic capsule comprises a repelling magnet, a thermal expansion layer and a magnetism isolating layer, wherein the repelling magnet is embedded inside the thermal expansion layer, the thermal expansion layer is connected with the outer side wall of the heat dissipation part, the magnetism isolating layer is coated on the outer surface of the thermal expansion layer, and the expansion phenomenon can occur after the thermal expansion layer absorbs enough heat from the heat dissipation part, so that the magnetism isolating layer is pushed to synchronously expand to reduce the magnetic shielding effect, and the magnetic field of the repelling magnet can be penetrated to play a role.
(3) The magnetism isolating layer comprises a plurality of densely distributed magnetism isolating scales. The magnetic isolation scales are made of high-permeability materials, the magnetic isolation scales are distributed densely to achieve a good magnetic shielding effect in a normal state, the surface area is increased after the thermal expansion layer expands, the magnetic isolation scales are difficult to effectively cover and form gaps, and a magnetic field repelling the magnets can penetrate through the gaps.
(4) The repelling magnets on the adjacent segmented heat dissipation fins are in magnetic repulsion arrangement, and the thermal expansion layer is made of a material which expands when heated, so that the heat dissipation parts in a high-temperature area can repel each other, and the heat dissipation effect is improved by the action of deflection and expansion.
(5) The space enclosed by the deflection groove and the heat dissipation part is filled with heat conduction fluid, the heat conduction fluid is a mixture of heat conduction oil and heat conduction sand in a mass ratio of 1:1, the heat conduction fluid is filled between the deflection groove and the heat dissipation part, a good heat conduction effect can be achieved, the heat dissipation channel is prevented from being interrupted or the effect is poor due to the fact that a gap is formed between the heat dissipation part and an oil tank, meanwhile, the resistance of the heat conduction fluid is small, and the heat dissipation part can conduct deflection action smoothly.
(6) The heat dissipation part adopts heat conduction metal material to make, and the isolation part adopts flexible thermal insulation material to make, and the isolation part separates the heat perception of realization to a plurality of regions with the heat dissipation part, and the heat dissipation part then still possesses the efficient heat conductivity and gives off the heat on the oil tank to the external environment in.
(7) The outer heat conduction piece is including heat conduction net, elasticity heat conduction membrane and outer heat conduction piece, heat conduction net connection is downthehole in the inflation, elasticity heat conduction membrane only the edge is in heat conduction net connection, outer heat conduction piece is connected in elasticity heat conduction membrane surface, heat conduction net plays the phenomenon of the setting effect avoiding the indent and takes place, can not disturb transformer oil's flow simultaneously, elasticity heat conduction membrane and outer heat conduction piece all have the efficient heat conductivity, wherein outer heat conduction piece plays mechanical protection effect, avoid elasticity heat conduction membrane to receive the damage and lead to transformer oil's leakage, the outer inflation piece receives to be dragged and when expanding, wherein elasticity heat conduction membrane mainly takes place inflation transformer oil and takes place the packing thereupon, and directly realize the efficient heat dissipation with external environment contact through elasticity heat conduction membrane.
(8) The number of outer conducting strips can be one or a plurality of combinations, theoretically, the larger the number of outer conducting strips, the better the expansion effect is, the larger the contact area between the elastic heat-conducting film and the outside is, the better the heat dissipation effect of the transformer oil in unit time is, but the protection effect is also reduced, and therefore appropriate selection is needed according to actual conditions.
(9) Elastic heat conduction membrane the inner is connected with many evenly distributed's elastic guide arm, and elastic guide arm extends to in the oil tank, elastic guide arm keeps away from elastic heat conduction membrane one end and is connected with and pushes away the oil ball, when elastic heat conduction membrane inflation with resume the shape, elastic guide arm all can stimulate and push away the oil ball and move the action, it can arouse transformer oil's flow to push away the oil ball when the migration, thereby improve transformer oil's temperature equilibrium nature, simultaneously utilize the high vibrations nature that pushes away the oil ball outside the inflation back, can force the transformer oil of outside packing to carry out real-time interaction, thereby improve radiating effect and scope.
(10) Push away the oil ball and include outer hollow ball, cambered surface parting piece and a pair of elasticity shake the pearl, cambered surface parting piece inlays and connects in outer hollow ball inner, and cambered surface parting piece sets up for the slope of elastic guide pole, a pair of elasticity shakes the pearl and fills respectively in outer hollow ball is by two spaces of cambered surface parting piece divided, utilize the elastic action that elasticity shakes the pearl when pushing away oil ball migration, and the unbalanced characteristics of the relative elastic guide pole of cambered surface parting piece, can arouse elastic guide pole and push away the holistic high vibrations nature of oil ball, thereby force transformer oil to carry out the internal interaction, improve the temperature equilibrium, improve the radiating effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a prior art structure;
FIG. 3 is a schematic structural diagram of a segmented heat sink fin according to the present invention;
FIG. 4 is a schematic structural view of an outer intumescent sheet portion of the invention;
FIG. 5 is a schematic view of the structure at A in FIG. 4;
FIG. 6 is a schematic diagram of the structure of the repulsive magnetic capsule of the present invention;
FIG. 7 is a schematic view of the structure at B in FIG. 6;
FIG. 8 is a schematic structural view of an outer intumescent sheet of the invention;
FIG. 9 is a schematic structural view of an oil push ball according to the present invention;
FIG. 10 is a schematic structural view of the outer expansion sheet of the present invention before and after partial expansion.
The reference numbers in the figures illustrate:
the heat dissipation device comprises an oil tank 1, a split type heat dissipation fin 2, a heat dissipation part 21, a separation part 22, a leakage prevention film 23, an outer expansion sheet 3, a heat conduction net 31, an elastic heat conduction film 32, an outer heat conduction sheet 33, an elastic wire 4, a pull wire 5, a repulsive magnetic capsule 6, a repulsive magnet 61, a thermal expansion layer 62, a magnetic isolation layer 63, an elastic guide rod 7, an oil pushing ball 8, an outer hollow ball 81, an arc parting sheet 82 and an elastic vibration ball 83.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-5, a self-expansion high heat dissipation oil-immersed transformer comprises an oil tank 1, a plurality of uniformly distributed deflection slots are formed in the outer end wall of the oil tank 1, matched segmented heat dissipation fins 2 are embedded in the deflection slots, each segmented heat dissipation fin 2 comprises a plurality of heat dissipation parts 21, a plurality of isolation parts 22 and a pair of leakage-proof membranes 23, each isolation part 22 is embedded and connected between the heat dissipation parts 21, each heat dissipation part 21 and each isolation part 22 are connected between the corresponding leakage-proof membranes 23, each leakage-proof membrane 23 is connected with the side wall of each deflection slot, a plurality of uniformly distributed elastic wires 4 are connected between each heat dissipation part 21 and the side wall of each deflection slot, a plurality of expansion holes which are distributed in a staggered manner with the deflection slots are further formed in the outer end wall of the oil tank 1, a plurality of outer expansion sheets 3 corresponding to the heat dissipation parts 21 are embedded and connected in the expansion holes, a plurality of uniformly distributed pull wires 5 are connected between the front ends of the heat dissipation parts 21 and the outer expansion sheets 3, the left and right ends of the heat dissipation part 21 are respectively embedded and connected with a repelling magnetic capsule 6.
The heat dissipation part 21 is made of a heat-conducting metal material, the isolation part 22 is made of a flexible heat-insulating material, the isolation part 22 separates the heat dissipation part 21 to realize heat sensing of multiple areas, and the heat dissipation part 21 still has efficient heat conductivity to dissipate heat on the oil tank 1 to the external environment.
Referring to fig. 6-7, the repulsive magnetic capsule 6 includes a repulsive magnet 61, a thermal expansion layer 62 and a magnetism isolating layer 63, the repulsive magnet 61 is embedded inside the thermal expansion layer 62, the thermal expansion layer 62 is connected with the outer side wall of the heat dissipating portion 21, the magnetism isolating layer 63 covers the outer surface of the thermal expansion layer 62, and the thermal expansion layer 62 expands after absorbing enough heat from the heat dissipating portion 21, so that the magnetism isolating layer 63 is pushed to expand synchronously to reduce the magnetic shielding effect, and the magnetic field of the repulsive magnet 61 can be transmitted to play a role.
The magnetism isolating layer 63 includes a plurality of closely-spaced magnetism isolating flakes. The magnetic isolation scales are made of high-permeability materials, the magnetic isolation scales are distributed densely to achieve a good magnetic shielding effect in a normal state, the surface area is increased after the thermal expansion layer 62 expands, the magnetic isolation scales are difficult to effectively cover, gaps appear, and the magnetic field of the repelling magnet 61 can penetrate through the gaps.
The repelling magnets 61 on the adjacent divided heat dissipation fins 2 are magnetically repelled, and the thermal expansion layer 62 is made of a material which expands when heated, so that the heat dissipation parts 21 in a high-temperature area repel each other, and the heat dissipation effect is improved by the action of deflection and expansion.
The space enclosed by the deflection groove and the heat dissipation part 21 is filled with heat conduction fluid, the heat conduction fluid is a mixture of heat conduction oil and heat conduction sand in a mass ratio of 1:1, the heat conduction fluid is filled between the deflection groove and the heat dissipation part 21, a good heat conduction effect can be achieved, the heat dissipation channel is prevented from being interrupted or poor in effect due to the fact that a gap is formed between the heat dissipation part 21 and the oil tank 1, meanwhile, resistance of the heat conduction fluid is small, and the heat dissipation part 21 can conduct deflection action smoothly.
Referring to fig. 8, the outer expansion sheet 3 includes a heat conduction net 31, an elastic heat conduction film 32 and an outer heat conduction sheet 33, the heat conduction net 31 is connected in the expansion hole, only the edge of the elastic heat conduction film 32 is connected with the heat conduction net 31, the outer heat conduction sheet 33 is connected to the outer surface of the elastic heat conduction film 32, the heat conduction net 31 plays a role in shaping to avoid the phenomenon of indent, and meanwhile, the flow of transformer oil is not interfered, the elastic heat conduction film 32 and the outer heat conduction sheet 33 both have high-efficiency heat conductivity, wherein the outer heat conduction sheet 33 plays a role in mechanical protection to avoid the transformer oil leakage caused by the damage of the elastic heat conduction film 32, when the outer expansion sheet 3 is pulled to expand, the elastic heat conduction film 32 mainly expands the transformer oil to be filled therewith, and the elastic heat conduction film 32 directly contacts with the external environment to realize high-efficiency heat dissipation.
The number of the outer heat conducting fins 33 may be one or a combination of a plurality of the outer heat conducting fins 33, theoretically, the larger the number of the outer heat conducting fins 33, the better the expansion effect, the larger the contact area between the elastic heat conducting film 32 and the outside, the better the heat dissipation effect of the transformer oil in unit time, but the lower the protection effect, and therefore, a proper selection is required according to actual conditions.
Elastic heat conduction membrane 32 the inner is connected with many evenly distributed's elastic guide 7, and elastic guide 7 extends to in the oil tank 1, elastic guide 7 keeps away from elastic heat conduction membrane 32 one end and is connected with and pushes away oil ball 8, when elastic heat conduction membrane 32 inflation with resume the shape, elastic guide 7 all can stimulate and push away oil ball 8 and move the action, it can arouse transformer oil's flow to push away oil ball 8 when the migration, thereby improve transformer oil's temperature equilibrium nature, simultaneously utilize the high vibrations nature that pushes away oil ball 8 behind the inflation of outer inflation piece 3, can force the transformer oil of outside packing to carry out real-time interaction, thereby improve radiating effect and scope.
Referring to fig. 9, the oil pushing ball 8 includes an outer hollow ball 81, an arc parting sheet 82 and a pair of elastic vibration beads 83, the arc parting sheet 82 is embedded and connected to the inner end of the outer hollow ball 81, the arc parting sheet 82 is disposed in an inclined manner relative to the elastic guide rod 7, the pair of elastic vibration beads 83 are respectively filled in two spaces of the outer hollow ball 81 separated by the arc parting sheet 82, and the elastic vibration beads 83 and the unbalanced characteristic of the arc parting sheet 82 relative to the elastic guide rod 7 can cause high vibration of the elastic guide rod 7 and the oil pushing ball 8 when the oil pushing ball 8 moves, so as to force the transformer oil to perform internal interaction, improve temperature balance and improve heat dissipation effect.
Referring to fig. 10, the present invention can sense the temperature of the transformer oil in different areas of the oil tank 1 by arranging the deflectable split type heat dissipation fins 2 and splitting them into a plurality of units, when the local overheating phenomenon occurs, the repelling magnetic capsules 6 on the corresponding heat dissipation parts 21 automatically trigger the expansion phenomenon due to the higher temperature, thereby releasing the magnetic field to repel, and the adjacent pair of heat dissipation parts 21 relatively deflect, thereby increasing the contact area between the heat dissipation parts 21 and the outside air, and further extending and expanding the preset outer expansion sheet 3 to the outside by synchronously pulling the deflection action, the transformer oil in the area can be pumped to the outside along with the expansion of the outer expansion sheet 3 for high-efficiency heat dissipation in a short time, the above components recover their shapes when the temperature returns to normal, thereby achieving temperature equalization and high heat dissipation performance of the fuel tank 1.
The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. The utility model provides a from high heat dissipation oil immersed transformer of inflation formula, includes oil tank (1), its characterized in that: the oil tank is characterized in that a plurality of uniformly distributed deflection grooves are formed in the outer end wall of the oil tank (1), matched split type heat dissipation fins (2) are embedded in the deflection grooves, each split type heat dissipation fin (2) comprises a plurality of heat dissipation parts (21), a plurality of isolation parts (22) and a pair of leakage-proof films (23), the isolation parts (22) are embedded and connected among the heat dissipation parts (21), the heat dissipation parts (21) and the isolation parts (22) are connected among the pair of leakage-proof films (23), the leakage-proof films (23) are connected with the side walls of the deflection grooves, a plurality of uniformly distributed elastic wires (4) are further connected between the heat dissipation parts (21) and the side walls of the deflection grooves, a plurality of expansion holes distributed in a staggered manner with the deflection grooves are further formed in the outer end wall of the oil tank (1), and a plurality of outer expansion sheets (3) corresponding to the heat dissipation parts (21) are connected and embedded in the expansion holes, a plurality of uniformly distributed pull wires (5) are connected between the front end of the heat dissipation part (21) and the outer expansion sheet (3), and repelling magnetic capsules (6) are embedded and connected at the left end and the right end of the heat dissipation part (21).
2. The self-expanding high heat dissipation oil-filled transformer of claim 1, wherein: the repelling magnetic capsule (6) comprises a repelling magnet (61), a thermal expansion layer (62) and a magnetism isolating layer (63), wherein the repelling magnet (61) is embedded in the thermal expansion layer (62), the thermal expansion layer (62) is connected with the outer side wall of the heat dissipation part (21), and the magnetism isolating layer (63) covers the outer surface of the thermal expansion layer (62).
3. The self-expanding high heat dissipation oil-filled transformer of claim 2, wherein: the magnetism isolating layer (63) comprises a plurality of densely distributed magnetism isolating scales, and the magnetism isolating scales are made of high-permeability materials.
4. The self-expanding high heat dissipation oil-filled transformer of claim 2, wherein: the repelling magnets (61) on the adjacent split type radiating fins (2) are arranged in a magnetic repelling mode, and the thermal expansion layer (62) is made of a material which expands when heated.
5. The self-expanding high heat dissipation oil-filled transformer of claim 1, wherein: and a space surrounded by the deflection groove and the heat dissipation part (21) is filled with a heat conduction fluid, and the heat conduction fluid is a mixture of heat conduction oil and heat conduction sand in a mass ratio of 1: 1.
6. The self-expanding high heat dissipation oil-filled transformer of claim 1, wherein: the heat dissipation part (21) is made of a heat-conducting metal material, and the isolation part (22) is made of a flexible heat-insulating material.
7. The self-expanding high heat dissipation oil-filled transformer of claim 1, wherein: the outer expansion sheet (3) comprises a heat conduction net (31), an elastic heat conduction film (32) and an outer heat conduction sheet (33), the heat conduction net (31) is connected in the expansion hole, only the edge of the elastic heat conduction film (32) is connected with the heat conduction net (31), and the outer heat conduction sheet (33) is connected to the outer surface of the elastic heat conduction film (32).
8. The self-expanding high heat dissipation oil-filled transformer of claim 7, wherein: the number of the outer heat-conducting fins (33) may be one or a combination of more.
9. The self-expanding high heat dissipation oil-filled transformer of claim 7, wherein: the oil tank is characterized in that the inner end of the elastic heat-conducting film (32) is connected with a plurality of elastic guide rods (7) which are uniformly distributed, the elastic guide rods (7) extend into the oil tank (1), and one ends, far away from the elastic heat-conducting film (32), of the elastic guide rods (7) are connected with oil pushing balls (8).
10. The self-expanding high heat dissipation oil-filled transformer of claim 9, wherein: the oil pushing ball (8) comprises an outer hollow ball (81), an arc surface parting sheet (82) and a pair of elastic vibration balls (83), the arc surface parting sheet (82) is embedded and connected to the inner end of the outer hollow ball (81), the arc surface parting sheet (82) is obliquely arranged relative to the elastic guide rod (7), and the pair of elastic vibration balls (83) are respectively filled in two spaces formed by the outer hollow ball (81) and the arc surface parting sheet (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110633933.4A CN113345685A (en) | 2021-06-07 | 2021-06-07 | Self-expansion type high-heat-dissipation oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110633933.4A CN113345685A (en) | 2021-06-07 | 2021-06-07 | Self-expansion type high-heat-dissipation oil-immersed transformer |
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| Publication Number | Publication Date |
|---|---|
| CN113345685A true CN113345685A (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110633933.4A Withdrawn CN113345685A (en) | 2021-06-07 | 2021-06-07 | Self-expansion type high-heat-dissipation oil-immersed transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242419A (en) * | 2021-12-15 | 2022-03-25 | 王来军 | Oil-immersed transformer insulation sleeve |
| CN115347513A (en) * | 2022-10-17 | 2022-11-15 | 江苏中瑞电气集团有限公司 | Combined bus duct |
-
2021
- 2021-06-07 CN CN202110633933.4A patent/CN113345685A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242419A (en) * | 2021-12-15 | 2022-03-25 | 王来军 | Oil-immersed transformer insulation sleeve |
| CN115347513A (en) * | 2022-10-17 | 2022-11-15 | 江苏中瑞电气集团有限公司 | Combined bus duct |
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