CN112133534A - Self-ventilation heat dissipation type oil-immersed transformer - Google Patents
Self-ventilation heat dissipation type oil-immersed transformer Download PDFInfo
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- CN112133534A CN112133534A CN202010932815.9A CN202010932815A CN112133534A CN 112133534 A CN112133534 A CN 112133534A CN 202010932815 A CN202010932815 A CN 202010932815A CN 112133534 A CN112133534 A CN 112133534A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 64
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 63
- 238000013508 migration Methods 0.000 claims abstract description 65
- 230000005012 migration Effects 0.000 claims abstract description 65
- 238000007664 blowing Methods 0.000 claims abstract description 29
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 10
- 230000005389 magnetism Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 3
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 29
- 230000009471 action Effects 0.000 abstract description 25
- 239000007789 gas Substances 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
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- 230000001050 lubricating effect Effects 0.000 description 1
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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
- H01F27/08—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
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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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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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a self-ventilation heat-dissipation oil-immersed transformer, belonging to the field of transformer equipment, which can realize the innovative preset ventilation heat dissipation holes in heat dissipation fins, triggers the migration action of a magnetic migration heat dissipation balloon through the magnetic force after sensing heat, forces the magnetic migration heat dissipation balloon to migrate in the ventilation heat dissipation holes and pushes gas to advance towards the inside of a transformer body, inflates and expands an air blowing membrane to improve the contact area with transformer oil, not only can improve the heat conduction effect of the transformer oil, but also can increase the contact area to improve the heat exchange effect, in addition, the air in the ventilation heat dissipation holes is supplemented by the entering of outside cold air after entering the air blowing membrane, resets under the elastic action of elastic pull wires after the magnetic migration heat dissipation balloon is cooled, repeats the migration action, not only can increase the contact area of the heat dissipation fins and the outside air, meanwhile, the heat exchange effect is improved by adopting an active ventilation mode, so that the heat dissipation performance of the heat dissipation fins is greatly improved.
Description
Technical Field
The invention relates to the field of transformer equipment, in particular to a self-ventilation 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
Aiming at the problems in the prior art, the invention aims to provide a self-ventilation heat-dissipation oil-immersed transformer, which can realize the innovative preset ventilation heat dissipation holes in the heat dissipation fins on the body of the traditional transformer, introduce the matching between a node base and a magnetic migration and exchange balloon, trigger the migration action of the magnetic migration and exchange balloon through the magnetic force action after sensing the heat, force the magnetic migration and exchange balloon to migrate in the ventilation heat dissipation holes and push the gas to advance towards the inside of the transformer body, inflate and expand the air blowing membrane to improve the contact area with the transformer oil, not only can improve the heat conduction effect of the transformer oil, but also can increase the contact area to improve the heat exchange effect, in addition, the air in the ventilation heat dissipation holes enters the air blowing membrane and is supplemented by the outside cold air, after the magnetic migration and exchange balloon is cooled, the self-ventilation air-dissipation oil-immersed transformer resets under the elastic action of an elastic pull wire to be matched with the node base again, repeating the above-mentioned migration action, not only can increasing radiating fin and outside air's area of contact, adopting the mode of initiatively taking a breath to improve the heat transfer effect simultaneously to promote radiating fin's thermal diffusivity by a wide margin.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A self-ventilation heat dissipation oil-immersed transformer comprises a transformer body, the outer end of the transformer body is connected with a plurality of uniformly distributed heat dissipation fins, the heat dissipation fins and the transformer body are integrally formed, a plurality of air exchange heat dissipation holes are uniformly distributed on the heat dissipation fins, the ventilation and heat dissipation hole comprises a main ventilation hole, a pair of auxiliary inflation holes and a pair of inner ventilation holes which are connected in sequence, the inner vent holes are arranged on the transformer body, the inner end of the transformer body is connected with a plurality of uniformly distributed air-blowing films, and the air-blowing film is covered on the outer side of the inner vent hole, one end of the main vent hole close to the auxiliary air-filling hole is inlaid and connected with a node base, one end of the node base, which is close to the air blowing film, is provided with a pair of heat exchange grooves, magnetic migration air exchange balloons are movably embedded in the heat exchange grooves, a pulling and fixing groove is formed in the bottom wall of the heat exchange groove, and an elastic pull wire is connected between the magnetic migration air exchange balloon and the bottom wall of the pulling and fixing groove.
Further, the node base includes heat conduction platform and embedded magnet, and embedded magnet connects in the one end that the heat conduction platform kept away from the magnetism migration and trades the balloon, heat conduction platform edge has seted up a plurality of evenly distributed's the air flue that flows, and the heat conduction platform is used for holding magnetism migration and trades the balloon and undertakes the effect of conducting heat to it, and embedded magnet is used for providing magnetic force and forces magnetism migration to trade the balloon and take place the migration in vice inflation hole, and the air flue that flows is used for satisfying the air flow to realize the outside air and take a breath the initiative of the downthehole air of radiating hole.
Furthermore, the magnetic migration air exchange balloon comprises a heat-insulating ball cover, a heat-conducting type net and heat-radiating arc pieces, wherein the heat-conducting type net is connected to the inner end of the heat-insulating ball cover in an embedded mode, the heat-radiating arc pieces are connected to the outer side of one end, far away from the elastic pull wire, of the heat-insulating ball cover in an embedded mode, a matching magnet is further connected into the heat-insulating ball cover in an embedded mode, magnetism between the matching magnet and the air flow channel is repulsive, the heat-insulating ball cover is used for isolating heat released by the heat-radiating fins, the heat is prevented from continuously interfering the matching of the internal heat extension seam expansion wire and the heat-conducting rod, and the heat-radiating arc pieces are used for releasing absorbed.
Furthermore, the outer surface of the matched magnet is covered with a magnetic shielding film, a plurality of self-closing seams which are uniformly distributed are formed in the magnetic shielding film, the outer end of the magnetic shielding film is connected with a plurality of heat extension seam expansion wires corresponding to the self-closing seams, the heat extension seam expansion wires are connected to two sides of the opening direction of the self-closing seams, the magnetic shielding film is used for shielding a magnetic field between the matched magnet and the embedded magnet, the heat extension seam expansion wires are heated after the heat is absorbed by the heat conducting rod from the heat conducting table, the self-closing seams are pulled to be opened after the heat extension seam expansion wires are heated, the magnetic field of the opened part is communicated, and then the magnetic transfer balloon is forced to transfer in the auxiliary inflation hole by utilizing the magnetic repulsion effect between the matched magnet and the embedded magnet, so that active air exchange is realized.
Furthermore, the one end of the thermal extension seam expanding wire, which is far away from the magnetic shielding film, is connected with a heat-conducting rod, the heat-conducting rod penetrates through the thermal insulation ball cover and extends to the outer side, and the heat-conducting rod can be attached to the inner wall of the heat exchange groove, so that the thermal extension seam expanding wire is heated by absorbing heat from the heat conduction table.
Furthermore, the thermal extension seam expanding wire is made of a material which expands when heated, the thermal extension seam expanding wire and the connection point of the heating rod are in contact with the heat conduction type net, the thermal extension seam expanding wire can pull open the self-closing seam after being thermally expanded, and under the continuous heat conduction effect of the heat conduction type net, the thermal extension seam expanding wire can be gradually cooled to restore the shape, so that the self-closing seam is re-closed, and the magnetic field effect between the matched magnet and the embedded magnet is cut off.
Furthermore, the heat insulation ball cover is made of flexible heat insulation materials, compressed hydrogen is filled in the heat insulation ball cover, the hydrogen has the advantages of being light in weight and good in heat conductivity, the heat conduction type net is assisted to absorb heat, meanwhile, the heat conduction type net can expand when absorbing heat and force the heat insulation ball cover to synchronously expand, accordingly, the airtightness between the heat conduction type net and the auxiliary inflation hole can be kept all the time, the smoothness of ventilation action is guaranteed, in addition, the hydrogen can reduce the overall weight of the magnetic migration balloon, and the magnetic migration balloon is favorably migrated under the action of magnetic repulsion.
Furthermore, the volumes of the pair of auxiliary inflation holes are larger than that of the main ventilation hole, the maximum extension distance of the elastic stay wire is consistent with the length of the auxiliary inflation holes, the volumes of the auxiliary inflation holes ensure that the external supplementary gas is more than the gas originally existing in the main ventilation hole after the magnetic migration ventilation ball is migrated, so that the heat exchange effect is fully ensured, and the elastic stay wire ensures that the magnetic migration ventilation ball is not enough to contact with the air blowing film after the magnetic migration, so that the resetting failure is caused by continuous heat absorption.
Further, the air-blowing membrane adopts insulating and oil-proof elastic heat conduction material to make, it has the nanometer carbon coating to coat on the louvre inner wall of taking a breath, and the air-blowing membrane can be when fully guaranteeing the security, absorb a large amount of heats after aerifing the inflation to closely laminate with transformer body inner wall and conduct the heat after the gassing, act as the heat of interim storage transformer oil of midbody, guarantee the low temperature of transformer oil.
Furthermore, the main ventilating hole inclines downwards by 5-15 degrees along the direction far away from the auxiliary inflating hole, on one hand, rainwater can be prevented from entering, and on the other hand, due to the characteristic that cold air is heavier and is positioned below, the main ventilating hole can suck air downwards during ventilation, so that more cold air can be supplemented to improve the heat exchange effect.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme can realize the innovative preset ventilation heat dissipation holes in the heat dissipation fins on the traditional transformer body, and introduces the matching between the node base and the magnetic migration heat dissipation ball, triggers the migration action of the magnetic migration heat dissipation ball through the magnetic force action after sensing the heat, forces the magnetic migration heat dissipation ball to migrate in the ventilation heat dissipation holes and pushes the gas to advance towards the inside of the transformer body, inflates and expands the air blowing membrane to improve the contact area with the transformer oil, not only can improve the heat conduction effect of the transformer oil, but also can increase the contact area to improve the heat exchange effect, in addition, the air in the ventilation heat dissipation holes enters the air blowing membrane and is supplemented by the entering of the outside cold air, after the magnetic migration heat dissipation ball is cooled, the air resets under the elastic action of the elastic pull wire to be matched with the node base again, the migration action is repeated, so that the contact area between the heat dissipation fins and the outside air can be, meanwhile, the heat exchange effect is improved by adopting an active ventilation mode, so that the heat dissipation performance of the heat dissipation fins is greatly improved.
(2) The node base includes heat conduction platform and embedded magnet, and embedded magnet connects and keeps away from the one end that the magnetism migration trades the balloon in the heat conduction platform, heat conduction platform outer edge has seted up a plurality of evenly distributed's the air flue that flows, the heat conduction platform is used for holding magnetism migration trades the balloon and undertakes the effect to its heat conduction volume, embedded magnet is used for providing magnetic force effect and forces magnetism migration to trade the balloon and take place the migration in vice inflation hole, the air flue that flows is used for satisfying the air flow, thereby realize the outside air and take a breath the initiative of the downthehole air of radiating hole of taking a breath and take a breath.
(3) The magnetic migration trades the balloon and includes adiabatic ballcoat, heat conduction type net and heat dissipation arc piece, the heat conduction type net is inlayed and is connected in the inner of adiabatic ballcoat, the heat dissipation arc piece is inlayed and is connected in the one end outside that elasticity was acted as go-between is kept away from to adiabatic ballcoat, still inlay in the adiabatic ballcoat and be connected with cooperation magnet, and magnetism is repulsive between cooperation magnet and the gas flow way, adiabatic ballcoat is used for keeping apart the heat that radiating fin released, avoid the heat to continuously disturb the cooperation of inside hot extension seam expanding silk and heat-drawing stick, the heat dissipation arc piece is used for releasing absorptive heat to the external world, thereby resume the initial condition that the magnetic migration trades the balloon.
(4) The outer surface of the matched magnet is covered with a magnetic shielding film, a plurality of uniformly distributed self-closing seams are formed in the magnetic shielding film, the outer end of the magnetic shielding film is connected with a plurality of heat extension seam expansion wires corresponding to the self-closing seams, the heat extension seam expansion wires are connected to two sides of the opening direction of the self-closing seams, the magnetic shielding film is used for shielding a magnetic field between the matched magnet and the embedded magnet, the heat extension seam expansion wires are heated after absorbing heat from a heat conduction platform through a heat conduction rod, the heat extension seam expansion wires are expanded when being heated and then pull the self-closing seams to be opened, the magnetic field of the opened part is communicated, then the magnetic repulsion effect between the matched magnet and the embedded magnet is utilized to force the migration magnetic transfer balloon to migrate in the auxiliary inflation hole, and active ventilation is realized.
(5) One end, far away from the magnetic shielding film, of the heat extension seam expanding wire is connected with a heat-conducting rod, the heat-conducting rod penetrates through the heat-insulating ball cover and extends to the outer side, and the heat-conducting rod can be attached to the inner wall of the heat exchange groove, so that the heat extension seam expanding wire is heated by absorbing heat from the heat conduction table.
(6) The thermal extension seam-expanding wire is made of a material which expands when heated, the thermal extension seam-expanding wire and the connection point of the heating rod are in contact with the heat-conducting type net, the thermal extension seam-expanding wire can pull open the self-closing seam after being thermally expanded, and under the continuous heat-conducting action of the heat-conducting type net, the thermal extension seam-expanding wire can be gradually cooled to recover the shape, so that the self-closing seam is re-closed, and the magnetic field action between the matched magnet and the embedded magnet is blocked.
(7) The adiabatic ball clothing is made of flexible heat insulating materials, the hydrogen gas after compression is filled in the adiabatic ball clothing, the hydrogen gas has the characteristics of light weight and good heat conductivity, the heat is absorbed by an auxiliary heat conduction type net, and meanwhile, the adiabatic ball clothing can expand and be forced to synchronously expand in a heat absorption mode, so that the airtightness between the auxiliary air charging hole and the auxiliary air charging hole can be kept all the time, the smoothness of air exchange action is ensured, in addition, the hydrogen gas can reduce the whole weight of the magnetic migration air exchanging balloon, and the magnetic migration air exchanging balloon is favorably migrated under the action of magnetic repulsion.
(8) The volume of a pair of auxiliary inflation holes is larger than that of the main inflation hole, the maximum extension distance of the elastic pull wire is consistent with the length of the auxiliary inflation holes, the volume of the auxiliary inflation holes ensures that the external supplementary gas is more than the gas originally existing in the main inflation holes after the magnetic migration ventilation ball migrates, so that the heat exchange effect is fully ensured, and the elastic pull wire ensures that the magnetic migration ventilation ball is not enough to contact with the air blowing membrane after migrating, so that the heat absorption is continued to cause the resetting failure.
(9) The air blowing film is made of an insulating and oil-isolating elastic heat conduction material, the inner wall of the ventilation and heat dissipation hole is coated with a nano carbon coating, the air blowing film can absorb a large amount of heat after inflation and expansion while the safety is fully guaranteed, the air blowing film is closely attached to the inner wall of the transformer body after deflation to conduct heat, the heat serves as an intermediate for temporarily storing transformer oil, and the low temperature of the transformer oil is guaranteed.
(10) The main ventilation hole inclines downwards by 5-15 degrees along the direction far away from the auxiliary charging hole, on one hand, rainwater can be prevented from invading, on the other hand, due to the characteristic that cold air is heavier to be positioned below, the main ventilation hole can suck air downwards during ventilation, and therefore more cold air can be supplemented to improve the heat exchange effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a heat dissipating fin according to the present invention;
FIG. 3 is a schematic view of the ventilation hole of the present invention in a normal state;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic view of a magnetic migration balloon according to the present invention;
fig. 6 is a schematic structural view of the ventilation hole of the present invention in a ventilation state.
The reference numbers in the figures illustrate:
the transformer comprises a transformer body 1, heat dissipation fins 2, air exchange heat dissipation holes 3, a main air exchange hole 31, an auxiliary air inflation hole 32, an inner air vent hole 33, an air blowing film 4, a node base 5, a heat conduction platform 51, an embedded magnet 52, an air flow passage 53, a magnetic migration air exchange balloon 6, a heat insulation ball cover 61, a heat conduction type net 62, heat dissipation arc pieces 63, elastic stay wires 7, a matched magnet 8, a heat extension seam expansion wire 9, a heat conduction rod 10 and a magnetic shielding film 11.
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. 1-2, a self-ventilation heat dissipation oil-immersed transformer includes a transformer body 1, a plurality of uniformly distributed heat dissipation fins 2 are connected to an outer end of the transformer body 1, the heat dissipation fins 2 and the transformer body 1 are integrally formed, and a plurality of uniformly distributed ventilation heat dissipation holes 3 are formed in the heat dissipation fins 2.
The volumes of the pair of auxiliary inflation holes 32 are larger than that of the main ventilation hole 31, the maximum extension distance of the elastic stay wire 7 is consistent with the length of the auxiliary inflation holes 32, the volumes of the auxiliary inflation holes 32 ensure that the externally supplemented gas after the magnetic migration air exchange balloon 6 migrates is more than the gas originally existing in the main ventilation hole 31, so that the heat exchange effect is fully ensured, and the elastic stay wire 7 ensures that the magnetic migration air exchange balloon 6 is not enough to contact with the air-blowing membrane 4 after migrating, so that the resetting failure is caused by continuous heat absorption.
The air blowing film 4 is made of an insulating and oil-isolating elastic heat conduction material, the inner wall of the air exchange heat dissipation hole 3 is coated with a nano carbon coating, the air blowing film 4 can absorb a large amount of heat after inflation and expansion when the safety is fully ensured, the heat is tightly attached to the inner wall of the transformer body 1 after deflation and conducted, the heat serves as an intermediate for temporarily storing transformer oil, and the low temperature of the transformer oil is ensured.
The main ventilation hole 31 is inclined downwards by 5-15 degrees in the direction far away from the auxiliary charging hole 32, on one hand, rainwater can be prevented from entering, on the other hand, due to the characteristic that cold air is heavier and is positioned below, the main ventilation hole 31 can suck air downwards during ventilation, and therefore more cold air can be supplemented to improve the heat exchange effect.
Referring to fig. 3-4, the ventilation and heat dissipation hole 3 includes a main ventilation hole 31, a pair of auxiliary ventilation holes 32 and a pair of inner ventilation holes 33, which are connected in sequence, the inner ventilation holes 33 are opened on the transformer body 1, the inner end of the transformer body 1 is connected with a plurality of uniformly distributed air-blowing membranes 4, and the air-blowing membranes 4 cover the outer sides of the inner ventilation holes 33, one end of the main ventilation hole 31 close to the auxiliary ventilation holes 32 is inlaid and connected with a node base 5, one end of the node base 5 close to the air-blowing membranes 4 is provided with a pair of heat exchange grooves, magnetic migration ventilation balloons 6 are movably inlaid in the heat exchange grooves, the bottom walls of the heat exchange grooves are provided with fixing grooves, and elastic pull wires 7 are connected between the.
The node base 5 comprises a heat conduction platform 51 and an embedded magnet 52, the embedded magnet 52 is connected to one end, far away from the magnetic migration air exchange balloon 6, of the heat conduction platform 51, a plurality of uniformly distributed flow air channels 53 are formed in the outer edge of the heat conduction platform 51, the heat conduction platform 51 is used for bearing the magnetic migration air exchange balloon 6 and playing a role in conducting heat to the magnetic migration air exchange balloon 6, the embedded magnet 52 is used for providing a magnetic force effect to force the magnetic migration air exchange balloon 6 to migrate in the auxiliary air charging hole 32, and the flow air channels 53 are used for meeting air flowing, so that active air exchange of outside air and air in the air exchange heat dissipation hole 3 is achieved.
Referring to fig. 5, the magnetic migration commutation balloon 6 includes a heat-insulating corset 61, a heat-conducting mesh 62 and heat-dissipating arc sheets 63, the heat-conducting mesh 62 is connected to the inner end of the heat-insulating corset 61 in an embedded manner, the heat-dissipating arc sheets 63 are connected to the outer side of the end of the heat-insulating corset 61 away from the elastic pull wire 7 in an embedded manner, the heat-insulating corset 61 is further connected with the matching magnet 8 in an embedded manner, and the matching magnet 8 and the flow air channel 53 are magnetically repelled from each other, the heat-insulating corset 61 is used for isolating the heat released by the heat-dissipating fins 2 to prevent the heat from continuously interfering with the matching of the internal heat-extending slit-expanding wire 9 and the heat-drawing rod 10, and the heat-dissipating arc sheets.
The outer surface of the matching magnet 8 is covered with a magnetic shielding film 11, a plurality of uniformly distributed self-closing seams are formed in the magnetic shielding film 11, the outer end of the magnetic shielding film 11 is connected with a plurality of heat extension expansion seam wires 9 corresponding to the self-closing seams, the heat extension expansion seam wires 9 are connected to two sides of the opening direction of the self-closing seams, the magnetic shielding film 11 is used for shielding a magnetic field between the matching magnet 8 and the embedded magnet 52, the heat extension expansion seam wires 9 are heated after the heat is absorbed by the heat conducting rod 10 from the heat conducting platform 51, the heat extension expansion seam wires 9 are heated and expanded, the self-closing seams are pulled to be opened, the communication of the magnetic field of the opening part is achieved, then the magnetic migration balloon 6 is forced to migrate in the auxiliary inflation hole 32 by utilizing the magnetic repulsion effect between the matching magnet 8 and the embedded magnet 52, and active ventilation.
One end of the thermal extension seam expanding wire 9, which is far away from the magnetic shielding film 11, is connected with a heat-conducting rod 10, the heat-conducting rod 10 penetrates through the heat-insulating ball cover 61 and extends to the outside, and the heat-conducting rod 10 can be attached to the inner wall of the heat exchange groove, so that the thermal extension seam expanding wire 9 is heated by absorbing heat from the heat conducting table 51.
The hot extension slit-expanding wire 9 is made of a material which expands when heated, the connecting point of the hot extension slit-expanding wire 9 and the heat-conducting rod 10 is in contact with the heat-conducting type net 62, the self-closing slit can be pulled open after the hot extension slit-expanding wire 9 expands when heated, and the hot extension slit-expanding wire 9 can be gradually cooled to restore the shape under the continuous heat-conducting action of the heat-conducting type net 62, so that the self-closing slit is re-closed, and the magnetic field action between the matched magnet 8 and the embedded magnet 52 is blocked.
The heat insulation ball cover 61 is made of flexible heat insulation materials, compressed hydrogen is filled in the heat insulation ball cover 61, the hydrogen has the characteristics of light weight and good heat conductivity, the heat conduction type net 62 is assisted to absorb heat, meanwhile, the heat conduction type net can expand in heat absorption and force the heat insulation ball cover 61 to synchronously expand, therefore, the airtightness between the heat insulation ball cover and the auxiliary inflation hole 32 can be kept all the time, the smoothness of ventilation action is ensured, in addition, the hydrogen can reduce the whole weight of the magnetic migration balloon 6, and the magnetic migration balloon 6 is favorably migrated under the action of magnetic repulsion.
When the transformer body 1 is used, a large amount of heat is generated, the heat radiating fins 2 heat themselves and radiate to the outside after being absorbed, part of the heat passes through the heat conducting table 51 to heat the magnetic migration change balloon 6, the heat conducting rod 10 absorbs the heat from the heat conducting table 51, the heat extending expansion seam wire 9 expands when being heated to pull the self-closing seam to expand, the embedded magnet 52 gives a magnetic repulsive force to the matching magnet 8 at the moment, so that the magnetic migration change balloon 6 is pushed to migrate in the auxiliary inflating hole 32 in a manner similar to piston movement, the gas in the auxiliary inflating hole 32 is filled into the inflating membrane 4, the outside cold air enters the main inflating hole 31 to be supplemented due to the air pressure relationship, along with the separation between the magnetic migration change balloon 6 and the node base 5, the heat absorbed by the heat conducting rod 10 is gradually radiated out through the heat conducting net 62 and the heat radiating arc sheets 63, and the heat extending expansion seam wire 9 recovers the shape after being continuously cooled, the self-closing seam is closed again, the self-closing seam is moved and reset under the elastic tension of the elastic stay wire 7, the air which just enters the main ventilation hole 31 and exchanges heat is discharged, and the actions are repeated, so that the excellent heat dissipation effect brought by continuous ventilation can be realized.
The invention can realize the innovative presetting of the ventilation and heat dissipation holes 3 in the heat dissipation fins 2 on the traditional transformer body 1, and introduces the matching between the node base 5 and the magnetic migration and heat exchange balloon 6, triggers the migration action of the magnetic migration and heat exchange balloon 6 through the magnetic force action after sensing the heat, forces the magnetic migration and heat exchange balloon 6 to migrate in the ventilation and heat dissipation holes 3 and pushes the gas to advance towards the inside of the transformer body 1, inflates and expands the air blowing membrane 4 to improve the contact area with the transformer oil, not only can improve the heat conduction effect of the transformer oil, but also can increase the contact area to improve the heat exchange effect, in addition, the air in the ventilation and heat dissipation holes 3 is supplemented by the entering of the outside cold air after entering the air blowing membrane 4, resets under the elastic action of the elastic pull wire 7 after the magnetic migration and heat exchange balloon 6 is cooled, and is matched with the node base 5 again, and repeats the, not only can increase radiating fin 2 and outside air's area of contact, adopt the mode of initiatively taking a breath to improve the heat transfer effect simultaneously to promote radiating fin 2's thermal diffusivity by a wide margin.
The foregoing is only a preferred embodiment 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 formula of ventilating heat dissipation type oil-immersed transformer, includes transformer body (1), transformer body (1) outer end is connected with a plurality of evenly distributed's radiating fin (2), and integrated into one piece, its characterized in that between radiating fin (2) and transformer body (1): a plurality of air exchange heat dissipation holes (3) which are uniformly distributed are arranged on the heat dissipation fins (2), the ventilation and heat dissipation hole (3) comprises a main ventilation hole (31), a pair of auxiliary inflation holes (32) and a pair of inner ventilation holes (33) which are connected in sequence, the inner vent holes (33) are arranged on the transformer body (1), the inner end of the transformer body (1) is connected with a plurality of uniformly distributed air-blowing membranes (4), and the air-blowing film (4) covers the outer side of the inner vent hole (33), one end of the main vent hole (31) close to the auxiliary vent hole (32) is embedded and connected with a node base (5), one end of the node base (5) close to the air blowing film (4) is provided with a pair of heat exchange grooves, a magnetic migration air exchange balloon (6) is movably embedded in the heat exchange groove, a fixed pulling groove is arranged on the bottom wall of the heat exchange groove, an elastic pull wire (7) is connected between the magnetic migration air exchange balloon (6) and the bottom wall of the drawing and fixing groove.
2. The self-ventilating heat-dissipating oil-immersed transformer according to claim 1, wherein: the node base (5) comprises a heat conduction platform (51) and an embedded magnet (52), the embedded magnet (52) is connected to one end, far away from the magnetic migration air exchange balloon (6), of the heat conduction platform (51), and a plurality of uniformly distributed air flowing channels (53) are formed in the outer edge of the heat conduction platform (51).
3. The self-ventilating heat-dissipating oil-immersed transformer according to claim 1, wherein: magnetism migration trades balloon (6) includes adiabatic ball clothing (61), heat conduction type net (62) and heat dissipation arc piece (63), heat conduction type net (62) are inlayed and are connected in the inner of adiabatic ball clothing (61), heat dissipation arc piece (63) are inlayed and are connected in one end outside that elasticity was drawn line (7) was kept away from in adiabatic ball clothing (61), still inlay in adiabatic ball clothing (61) and be connected with cooperation magnet (8), and magnetism is repulsive between cooperation magnet (8) and the air flue (53).
4. The self-ventilating heat-dissipating oil-immersed transformer according to claim 3, wherein: the outer surface of the matched magnet (8) is covered with a magnetic shielding film (11), a plurality of self-closing seams which are uniformly distributed are formed in the magnetic shielding film (11), the outer end of the magnetic shielding film (11) is connected with a plurality of heat extension and seam expansion wires (9) corresponding to the self-closing seams, and the heat extension and seam expansion wires (9) are connected to two sides of the opening direction of the self-closing seams.
5. The self-ventilating heat-dissipating oil-filled transformer according to claim 4, wherein: one end, far away from the magnetic shielding film (11), of the thermal extension seam expanding wire (9) is connected with a heat conducting rod (10), and the heat conducting rod (10) penetrates through the heat insulation ball clothing (61) and extends to the outer side.
6. The self-ventilating heat-dissipating oil-filled transformer according to claim 4, wherein: the thermal extension slit-expanding wire (9) is made of a material which expands when being heated, and the connecting point of the thermal extension slit-expanding wire (9) and the heat-conducting rod (10) is in contact with the heat-conducting type net (62).
7. The self-ventilating heat-dissipating oil-immersed transformer according to claim 3, wherein: the heat insulation ball cover (61) is made of flexible heat insulation materials, and compressed hydrogen is filled in the heat insulation ball cover (61).
8. The self-ventilating heat-dissipating oil-immersed transformer according to claim 1, wherein: the volume of the pair of the auxiliary inflating holes (32) is larger than that of the main ventilating hole (31), and the maximum extending distance of the elastic pull wire (7) is consistent with the length of the auxiliary inflating hole (32).
9. The self-ventilating heat-dissipating oil-immersed transformer according to claim 1, wherein: the air blowing film (4) is made of an insulating and oil-proof elastic heat conduction material, and a nano carbon coating is coated on the inner wall of the air-changing heat dissipation hole (3).
10. The self-ventilating heat-dissipating oil-immersed transformer according to claim 1, wherein: the main ventilation hole (31) is inclined downwards by 5-15 degrees in the direction far away from the auxiliary inflation hole (32).
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| CN202010932815.9A CN112133534B (en) | 2020-09-08 | 2020-09-08 | Self-ventilation heat dissipation type oil-immersed transformer |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112954973A (en) * | 2021-02-09 | 2021-06-11 | 陆兵 | Multipoint thermal vibration type high-heat-dissipation power supply |
| CN112964092A (en) * | 2021-02-17 | 2021-06-15 | 姜黎平 | Bidirectional bulge type sleeve heat exchanger |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929936A (en) * | 2014-04-28 | 2014-07-16 | 昆山佑翔电子科技有限公司 | Automatic heat dissipation type anti-interference magnet ring |
| CN108624733A (en) * | 2018-06-18 | 2018-10-09 | 华林特钢集团有限公司 | A kind of steel ingot refinement waste heat recovery device |
| CN109300600A (en) * | 2018-10-23 | 2019-02-01 | 蒋荣新 | Radiate composite cable |
| CN109677558A (en) * | 2017-10-18 | 2019-04-26 | 天津代琛奇科技有限公司 | A kind of novel battery storing unit |
| CN111478216A (en) * | 2019-12-31 | 2020-07-31 | 南通宁海机械电器有限公司 | Prepackage type transformer substation with structure is striden to self-loopa heat dissipation is erect |
| CN111540570A (en) * | 2020-06-09 | 2020-08-14 | 冯国民 | Transformer cabinet based on self-feedback uniform heat dissipation |
| CN111627667A (en) * | 2020-07-14 | 2020-09-04 | 杨成 | Outer formula heat radiation structure that becomes of transformer |
-
2020
- 2020-09-08 CN CN202010932815.9A patent/CN112133534B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929936A (en) * | 2014-04-28 | 2014-07-16 | 昆山佑翔电子科技有限公司 | Automatic heat dissipation type anti-interference magnet ring |
| CN109677558A (en) * | 2017-10-18 | 2019-04-26 | 天津代琛奇科技有限公司 | A kind of novel battery storing unit |
| CN108624733A (en) * | 2018-06-18 | 2018-10-09 | 华林特钢集团有限公司 | A kind of steel ingot refinement waste heat recovery device |
| CN109300600A (en) * | 2018-10-23 | 2019-02-01 | 蒋荣新 | Radiate composite cable |
| CN111478216A (en) * | 2019-12-31 | 2020-07-31 | 南通宁海机械电器有限公司 | Prepackage type transformer substation with structure is striden to self-loopa heat dissipation is erect |
| CN111540570A (en) * | 2020-06-09 | 2020-08-14 | 冯国民 | Transformer cabinet based on self-feedback uniform heat dissipation |
| CN111627667A (en) * | 2020-07-14 | 2020-09-04 | 杨成 | Outer formula heat radiation structure that becomes of transformer |
Cited By (16)
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|---|---|---|---|---|
| CN112954973A (en) * | 2021-02-09 | 2021-06-11 | 陆兵 | Multipoint thermal vibration type high-heat-dissipation power supply |
| CN112964092A (en) * | 2021-02-17 | 2021-06-15 | 姜黎平 | Bidirectional bulge type sleeve heat exchanger |
| CN113066640A (en) * | 2021-03-22 | 2021-07-02 | 南通宁海机械电器有限公司 | Self-floating and latent uniform-heating oil-immersed transformer for transformer substation |
| CN113193686A (en) * | 2021-04-25 | 2021-07-30 | 薛理通 | High heat dissipating motor based on two fluid medium |
| CN113426650A (en) * | 2021-05-07 | 2021-09-24 | 刘青 | Even-light processing technology for color steel plate |
| CN113438861A (en) * | 2021-06-10 | 2021-09-24 | 徐州利明汽车电器有限公司 | Self-ventilation heat dissipation type automobile regulator |
| CN113571300A (en) * | 2021-06-28 | 2021-10-29 | 江苏亨特集团华特电气有限公司 | Oscillating-fin-imitating external-moving heat dissipation type oil-immersed transformer |
| CN113571300B (en) * | 2021-06-28 | 2022-06-10 | 江苏亨特集团华特电气有限公司 | Oscillating-fin-imitating external-moving heat dissipation type oil-immersed transformer |
| CN113381550A (en) * | 2021-08-13 | 2021-09-10 | 海门市协通精密机械制造有限公司 | Pneumatic high-stability motor |
| CN113381550B (en) * | 2021-08-13 | 2021-10-08 | 海门市协通精密机械制造有限公司 | Pneumatic high-stability motor |
| CN113674949A (en) * | 2021-09-18 | 2021-11-19 | 天长市万福电子有限公司 | High-temperature-resistant transformer with good insulating property |
| CN113674949B (en) * | 2021-09-18 | 2023-08-08 | 天长市万福电子有限公司 | Transformer with good high-temperature resistance and insulation performance |
| CN115453169A (en) * | 2022-09-06 | 2022-12-09 | 王晓培 | Pneumatic ventilation type electric power monitoring pile |
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| CN117156829B (en) * | 2023-10-31 | 2024-03-01 | 连云港富士珑光电工程有限公司 | LED screen heat abstractor |
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