CN117095911A - Oil immersed three-phase transformer - Google Patents
Oil immersed three-phase transformer Download PDFInfo
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- CN117095911A CN117095911A CN202311336721.5A CN202311336721A CN117095911A CN 117095911 A CN117095911 A CN 117095911A CN 202311336721 A CN202311336721 A CN 202311336721A CN 117095911 A CN117095911 A CN 117095911A
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- shell
- heat dissipation
- transmission
- oil
- phase transformer
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims abstract description 58
- 239000000110 cooling liquid Substances 0.000 claims abstract description 24
- 230000009466 transformation Effects 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000004804 winding Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 208000032369 Primary transmission Diseases 0.000 claims description 9
- 208000032370 Secondary transmission Diseases 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000007654 immersion Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 4
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- H01F27/18—Liquid cooling by evaporating liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/08—Adaptations for driving, or combinations with, pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- H01F27/025—Constructional details relating to cooling
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/12—Two-phase, three-phase or polyphase transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses an oil-immersed three-phase transformer, and relates to the technical field of transformers; comprises a shell and a transformation structure; the shell is internally provided with a transformation structure, and the shell is provided with a heat dissipation structure; the heat dissipation structure comprises a heat exchange tube which is arranged in the shell and surrounds the pressure transformation structure, wherein the inside of the heat exchange tube is provided with cooling liquid, the heat exchange tube penetrates out of the shell and is provided with a transmission cavity, and the transmission cavity is connected with a heat dissipation pipe network; a rotating shaft is rotatably arranged on the radiating pipe network, and a fan blade is arranged at one end of the rotating shaft; the impeller is rotatably arranged in the transmission cavity. The device utilizes the characteristic that a large amount of heat is absorbed or released in the gas-liquid conversion process, realizes high-efficiency heat dissipation of the transformer on the premise of not installing other drives, remarkably improves the heat dissipation effect, and simultaneously achieves the aims of energy conservation and emission reduction.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to an oil-immersed three-phase transformer.
Background
The transformer is a device for changing the voltage of an alternating current circuit by electromagnetic induction, and the main structure is a primary coil, a secondary coil and an iron core. The three-phase transformer is a transformer formed by matching three independent windings, and can adapt to different input voltages by arranging the three-phase transformers in a star-shaped or triangle-shaped arrangement mode. The three-stage transformer is widely applied, and a large amount of heat can be generated in the use process of the transformer, and particularly, the transformer can be overheated due to long-term high-load use, so that the service life is influenced, and therefore, the transformer is required to be matched with a heat dissipation structure to be in a reasonable temperature range.
The oil immersed transformer is a transformer capable of improving the heat dissipation effect, and is a novel high-performance transformer with more reasonable structure and better performance. The transformer seals the shell and is filled with oil, internal heat is released by means of oil immersion self-cooling, oil immersion air cooling, oil immersion water cooling, forced oil circulation and the like, the radiating effect is improved, and meanwhile, the oil immersion transformer can also play a role in reducing noise to a certain extent due to the fact that oil is directly contacted with all parts in the oil immersion transformer.
Although the heat dissipation effect of the oil-immersed transformer can be improved to a certain extent, many oil-immersed transformers use a static heat dissipation structure, and a circulation is spontaneously formed by means of high-temperature rising and low-temperature falling of liquid, but the efficiency of the circulation in the mode is very low, so that the transformer cannot be guaranteed to sufficiently dissipate heat, and therefore, the situation that equipment is damaged due to overhigh temperature may occur.
Disclosure of Invention
The invention aims to provide an oil-immersed three-phase transformer so as to solve the problems in the background art. The oil-immersed three-phase transformer with the good radiating effect is provided, the radiating efficiency can be effectively improved in Europe, no additional drive is required to be installed, and the safety is ensured.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an oil immersed three-phase transformer comprises a shell and a transformation structure; the shell is internally provided with a transformation structure, and the shell is provided with a heat dissipation structure; the heat dissipation structure comprises a heat exchange tube which is arranged in the shell and surrounds the pressure transformation structure, wherein cooling liquid is arranged in the heat exchange tube, one end of the heat exchange tube penetrating out of the shell is connected with a transmission cavity, and the transmission cavity is connected with a heat dissipation pipe network; a rotating shaft is rotatably arranged on the radiating pipe network, and a fan blade is arranged at one end of the rotating shaft; the impeller is rotatably arranged in the transmission cavity;
the impeller is connected with the rotating shaft through a transmission structure, and the transmission structure is used for transmitting drive between the impeller and the rotating shaft;
the voltage transformation structure is used for accessing the circuit to carry out voltage regulation.
As a further scheme of the invention: the cooling liquid is liquid with boiling point temperature lower than 80 ℃.
As still further aspects of the invention: the transmission structure comprises a transmission box arranged in a transmission cavity, the fan blade is connected with a first-stage bevel gear arranged in the transmission box, the transmission structure further comprises an installation box arranged on each radiating pipe network, and a second-stage bevel gear is arranged at the position of the rotating shaft penetrating through the installation box.
As still further aspects of the invention: the transmission box is internally provided with a primary transmission frame meshed with the primary bevel gear, the secondary bevel gear is connected with the secondary transmission frame in a meshed manner, and the primary transmission frame is meshed with the secondary transmission frame.
As still further aspects of the invention: the utility model discloses a heat dissipation pipe network, including transmission cavity, auxiliary pipe, support rod, control valve, support rod, control valve, auxiliary pipe, piston block, the block is installed to the one end that the transmission cavity was kept away from to the heat dissipation pipe network, the block is installed to the auxiliary pipe in the auxiliary pipe, the block of fretwork is installed to the open end of auxiliary pipe, the control valve is installed to heat dissipation pipe network one side, the heat dissipation pipe network passes through support rod connection casing surface.
As still further aspects of the invention: the transformer structure comprises a base, three groups of iron cores are arranged on the base, windings are wound on the iron cores, and the windings are connected with outgoing copper bars.
As still further aspects of the invention: the transformation structure also comprises a high-voltage sleeve and a low-voltage sleeve which are arranged on the shell, and the high-voltage sleeve and the low-voltage sleeve are connected with corresponding outgoing copper bars through wires respectively.
As still further aspects of the invention: the oil storage cabinet is characterized in that a plurality of groups of radiating pipes communicated with the inside of the shell are arranged outside the shell, a supporting frame is arranged on the surface of the shell, and the oil storage cabinet is arranged on the supporting frame and connected with the shell.
As still further aspects of the invention: the oil drain valve is arranged on one side of the shell, and a plurality of groups of supporting legs are arranged outside the shell.
Compared with the prior art, the invention has the beneficial effects that:
by adopting the oil immersed three-phase transformer, besides the conventional heat dissipation related structure, the heat exchange pipe is arranged in the shell, a small amount of cooling liquid is placed in the heat exchange pipe, the boiling point of the cooling liquid is slightly higher than the room temperature, so that the temperature of the oil rises enough when the transformer is started, the cooling liquid can directly boil and gasify, a great amount of heat can be absorbed in the gasification process, the internal oil temperature is reduced, the generated gas reaches the upper heat dissipation pipe network, contacts with the lower temperature of the outside and can be condensed again to fall, in the process, the heat is dissipated in double through the heat exchange and condensation modes, the cooling liquid is used for circularly exchanging heat with the heat dissipation pipe network and the heat exchange pipe, and compared with the direct heat exchange structure, the gasification process of the liquid can absorb a great amount of heat, so that the heat dissipation effect is better, and the integral heat dissipation efficiency of the transformer is remarkably improved;
by adopting the oil immersed three-phase transformer, the boiled gas in the heat exchange tube is rushed upwards, the impeller in the transmission cavity is driven to rotate, and then the impeller is transmitted to the rotating shaft through the transmission structure, so that the fan blades installed on one side of a plurality of heat dissipation pipe networks rotate, the fan-like effect is achieved, the heat dissipation efficiency of the heat dissipation pipe networks is further improved by generating air flow, no additional driving is installed, the heat generated by the transformer is utilized, the heat dissipation effect of the transformer is improved through multiple conversion, the heat dissipation efficiency is greatly improved, and the device has great advantages in the aspect of recycling energy sources.
Drawings
Fig. 1 is a schematic structural diagram of an oil-immersed three-phase transformer.
Fig. 2 is a schematic structural diagram of a heat dissipation structure and a transformation structure in an oil-immersed three-phase transformer.
Fig. 3 is a schematic structural diagram of a cross section of a heat dissipation structure in an oil-immersed three-phase transformer.
Fig. 4 is a schematic diagram of a transmission structure and impeller cooperation structure in an oil immersed three-phase transformer.
Fig. 5 is a schematic structural diagram of the inside of an auxiliary tube in an oil-immersed three-phase transformer.
In the figure: 1-an oil storage cabinet; 11-a supporting frame; 2-a housing; 21-radiating pipes; 22-a pressure relief valve; 23-an oil drain valve; 24-supporting legs; 3-a voltage transformation structure; 31-low voltage bushing; 32-high voltage bushing; 33-conducting wires; 34-iron core; 35-outgoing copper bars; 36-winding; 37-base; 4-a heat dissipation structure; 41-a heat dissipation pipe network; 411-struts; 412-a control valve; 42-auxiliary tube; 421-piston block; 422-cap; 43-rotating shaft; 44-fan blades; 45-transmission cavity; 46-impeller; 47-heat exchange tubes; 48-cooling liquid; 5-a transmission structure; 51-secondary bevel gears; 52-a secondary transmission frame; 53-a primary transmission frame; 54-a transmission box; 55-primary bevel gears; 56-mounting box.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, in an embodiment of the present invention, an oil-immersed three-phase transformer includes a housing 2 and a transforming structure 3; the transformer structure 3 is arranged in the shell 2, and the heat dissipation structure 4 is arranged on the shell 2; the heat dissipation structure 4 comprises a heat exchange tube 47 which is arranged in the shell 2 and surrounds the pressure transformation structure 3, wherein a cooling liquid 48 is arranged in the heat exchange tube 47, one end of the heat exchange tube 47 penetrating out of the shell 2 is connected with a transmission cavity 45, and the transmission cavity 45 is connected with a heat dissipation pipe network 41; a rotating shaft 43 is rotatably arranged on the heat dissipation pipe network 41, and a fan blade 44 is arranged at one end of the rotating shaft 43; the impeller 46 is rotatably arranged in the transmission cavity 45;
the impeller 46 is connected with the rotating shaft 43 through a transmission structure 5, and the transmission structure 5 is used for transmitting drive between the impeller 46 and the rotating shaft 43;
the voltage transformation structure 3 is used for accessing a circuit to carry out voltage regulation.
The device is provided with the heat radiation structure 4 surrounding the pressure transformation structure 3 in the shell 2, the heat exchange tube 47 of the heat radiation structure 4 is positioned in the shell 2, a small amount of cooling liquid 48 is placed in the heat exchange tube 47, and the excessive air pressure inside the heat exchange tube 47 and the heat radiation tube network 41 is not caused to be standard after the amount of the cooling liquid 48 is boiled. The cooling liquid 48 uses a liquid with a boiling point higher than the normal temperature but lower than the limit temperature of the oil immersed transformer, after the transformer is started, the high temperature can cause the cooling liquid 48 inside to boil and gasify, and a great amount of heat can be taken away in the gasification process, so that the internal temperature of the transformer is reduced, and the heat dissipation effect is achieved. The high temperature gas rises to enter the upper heat dissipation pipe network 41, and after the heat dissipation pipe network 41 contacts with the outside air, the gas is condensed again due to low temperature, falls back to the heat exchange pipe 47 along the heat dissipation pipe network 41 again, and continuously circulates to complete heat dissipation. The heat dissipation efficiency of this device is showing and is being higher than the heat dissipation efficiency that utilizes inside oil high temperature to raise naturally to circulate, consequently can very obvious promotion holistic radiating effect.
The device is provided with a transmission cavity 45 at the joint of a heat exchange pipe 47 and a heat radiation pipe network 41, an impeller 46 connected with a transmission structure 5 is arranged in the transmission cavity 45, the impeller 46 can rotate due to upward impact air flow, the rotation is further transmitted to a rotating shaft 43 positioned on the heat radiation pipe network 41 through the transmission structure 5, and a fan blade 44 arranged on one side of the rotating shaft 43 can rotate along with the rotation. The rotation of the fan blades 44 generates air flow rushing to the heat dissipation pipe network 41 in the external environment, so that the heat dissipation effect of the heat dissipation pipe network 41 is further improved, the air is liquefied more quickly, and the circulation efficiency is improved.
Compared with the traditional heat dissipation mode of contact heat exchange or air cooling heat dissipation, the device utilizes the characteristic that substances are transformed in form between gas and liquid, a large amount of heat is released in the condensation process, a large amount of heat is absorbed in the evaporation process, and the heat dissipation effect is remarkably improved. Meanwhile, under the condition that no additional driving equipment such as a motor and a pump body is connected, the device utilizes heat which is generated by the transformer and cannot be reused, the fan blades 44 are pushed, the heat dissipation effect is improved by using the fan blades 44, namely, the problem of heat is solved by utilizing the heat problem to be solved, the recycling of the heat is realized, and the purposes of energy conservation and emission reduction are achieved.
As another embodiment of the present invention, referring to fig. 4, the cooling liquid 48 is a liquid having a boiling point temperature lower than 80 ℃. The cooling liquid 48 can use various liquids meeting the requirements, and can be replaced by different liquids according to different environment temperatures of the transformer, and the temperature of the liquids is required to be lower than 80 ℃ so that the cooling liquid 48 can continuously evaporate and absorb heat in the normal use process of the transformer to ensure the heat dissipation effect.
Referring to fig. 3 and 4, the transmission structure 5 includes a transmission box 54 installed in the transmission cavity 45, the fan blades 44 are connected to a primary bevel gear 55 located in the transmission box 54, the transmission structure 5 further includes a mounting box 56 installed on each heat dissipation pipe network 41, and the secondary bevel gear 51 is installed at a position where the rotating shaft 43 passes through the mounting box 56. The transmission box 54 isolates the transmission structure 5 and the cooling liquid 48, prevents the cooling liquid 48 from leaking, the primary bevel gear 55 is driven by the impeller 46, and rotates along with the impeller 46 when the impeller 46 rotates, the installation box 56 is used for fixing the rotating shaft 43 and protecting related structures, and the secondary bevel gear 51 is installed on the rotating shaft 43 and can drive the rotating shaft 43 to rotate.
Referring to fig. 3 and 4, a primary transmission frame 53 meshed with a primary bevel gear 55 is installed in the transmission box 54, the secondary bevel gear 51 is connected with a secondary transmission frame 52 in a meshed manner, and the primary transmission frame 53 is meshed with the secondary transmission frame 52. The primary transmission frame 53 and the secondary transmission frame 52 are matched, so that transmission between the primary bevel gear 55 and the secondary bevel gear 51 is realized, the primary transmission frame 53 and the secondary transmission frame 52 used in the device are both structures of which shafts are matched with bevel gears at two ends for transmission, and besides the illustrated structure, the transmission effect can be realized by matching a belt pulley structure with the bevel gears.
Referring to fig. 1 to 3, an auxiliary pipe 42 is connected to one end of the heat dissipation pipe network 41 far away from the transmission cavity 45, a piston block 421 is installed in the auxiliary pipe 42, a hollowed cap 422 is installed at an open end of the auxiliary pipe 42, a control valve 412 is installed at one side of the heat dissipation pipe network 41, and the heat dissipation pipe network 41 is connected to the surface of the housing 2 through a supporting rod 411. The auxiliary pipe 42 is installed at the top, and the opening end is inclined upwards by a small margin, and the difference of temperature can lead to the difference of the gaseous volume of inside evaporation, so set up movable piston block 421, through the inside and outside atmospheric pressure of the removal balance of piston block 421, the block 422 is used for blocking piston block 421, avoids piston block 421 to drop and causes the gas leakage, and cooling tube 21 itself has certain inclination, can make the coolant 48 normal backward flow of interior condensation. The auxiliary tube 42 may be replaced with other types of piston structures or deformable bladders. The control valve 412 is used for injecting or extracting the cooling liquid 48 inside, and the strut 411 enhances the stability of the heat dissipation pipe network 41.
Referring to fig. 2, the transformer structure 3 includes a base 37, three groups of iron cores 34 are mounted on the base 37, and windings 36 are wound on the iron cores 34, and the windings 36 are connected with an outgoing copper bar 35. The base 37 is used for installing the iron core 34, the outgoing copper bar 35 is used for wiring, the winding 36 is wound on the iron core 34, and voltage conversion with different proportions can be achieved through the winding 36 in a matched mode.
Referring to fig. 1 and 2, the voltage transformation structure 3 further includes a high voltage bushing 32 and a low voltage bushing 31 mounted on the housing 2, and the high voltage bushing 32 and the low voltage bushing 31 are respectively connected to corresponding outgoing copper bars 35 through wires 33. A low voltage bushing 31 and a high voltage bushing 32 are mounted outside the housing 2 for connecting the low voltage circuit and the high voltage circuit.
Referring to fig. 1, a plurality of groups of radiating pipes 21 communicated with the inside of the casing 2 are installed outside the casing 2, a supporting frame 11 is installed on the surface of the casing 2, an oil storage cabinet 1 is installed on the supporting frame 11, and the oil storage cabinet 1 is connected with the casing 2. The oil conservator 1 is used for preserving the required oil of heat dissipation, installs the radiating pipe 21 outside the casing 2 and belongs to the common basic radiating structure of oily formula three-phase transformer, and the top and the bottom of casing 2 are connected respectively at the both ends of radiating pipe 21, and at the inside oily back of being heated of casing 2, hot oil rises, and cold oil descends, and hot oil can be extruded to the radiating pipe 21 of both sides in, after outside heat dissipation, the temperature continuously drops, finally gets back to in the casing 2 again from the bottom.
Referring to fig. 1, the casing 2 is provided with a relief valve 22, one side of the casing 2 is provided with an oil drain valve 23, and the casing 2 is externally provided with a plurality of groups of support legs 24. The relief valve 22 is used for releasing pressure when the internal pressure is too high to avoid explosion, the oil release valve 23 is used for discharging the oil in the interior, and the support leg 24 provides support for the shell 2.
It should be noted that the structure of the transformer described in the present device is a basic structure, and some structures commonly known in the art and existing by default are not described in detail, such as an oil level gauge mounted on the oil tank 1, a nameplate and a thermometer mounted on the housing 2, a low-voltage coil and a high-voltage coil contained in the winding 36, and the like.
The working principle of the invention is as follows:
the device is characterized in that a transformation structure 3 is arranged in a shell 2, a plurality of groups of radiating pipes 21 are arranged outside the shell 2, oil is filled in the shell 2, a heat exchange pipe 47 surrounding the transformation structure 3 is arranged in the shell 2, the heat exchange pipe 47 is connected with a transmission cavity 45 positioned outside the shell 2, the transmission cavity 45 is connected with a radiating pipe network 41, a small amount of cooling liquid 48 is arranged in the heat exchange pipe 47, the boiling point temperature of the cooling liquid 48 is lower than the upper limit of the working temperature of a transformer, an impeller 46 is arranged in the transmission cavity 45, a rotating shaft 43 is arranged on the radiating pipe network 41, the rotating shaft 43 is connected with fan blades 44, and the rotation of the impeller 46 can be transmitted to the rotating shaft 43 through a transmission structure 5, so that the fan blades 44 rotate. The device utilizes the boiling process of the cooling liquid 48 to quickly absorb heat, and drives the impeller 46 to rotate in the process of quick rising of gas, so that the fan blades 44 can rotate, the rising gas is liquefied again in a low-temperature environment at a high place, heat is quickly dissipated, and the rising gas returns to the bottom to circularly dissipate heat again. The device can remarkably improve the radiating efficiency, utilizes the heat of the transformer to carry out auxiliary radiating, effectively improves the radiating effect of the transformer, and has the advantages of energy conservation and environmental protection.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. An oil immersed three-phase transformer comprises a shell and a transformation structure; the transformer is characterized in that a transformer structure is arranged in the shell, and a heat dissipation structure is arranged on the shell; the heat dissipation structure comprises a heat exchange tube which is arranged in the shell and surrounds the pressure transformation structure, wherein cooling liquid is arranged in the heat exchange tube, one end of the heat exchange tube penetrating out of the shell is connected with a transmission cavity, and the transmission cavity is connected with a heat dissipation pipe network; a rotating shaft is rotatably arranged on the radiating pipe network, and a fan blade is arranged at one end of the rotating shaft; the impeller is rotatably arranged in the transmission cavity;
the impeller is connected with the rotating shaft through a transmission structure, and the transmission structure is used for transmitting drive between the impeller and the rotating shaft;
the voltage transformation structure is used for accessing the circuit to carry out voltage regulation.
2. The oil immersed three-phase transformer according to claim 1, wherein the cooling liquid is a liquid having a boiling point temperature of less than 80 degrees celsius.
3. The oil immersed three-phase transformer according to claim 1, wherein the transmission structure comprises a transmission box installed in the transmission cavity, the fan blade is connected with a primary bevel gear located in the transmission box, the transmission structure further comprises installation boxes installed on the radiating pipe networks, and a secondary bevel gear is installed at the position where the rotating shaft penetrates through the installation boxes.
4. An oil immersed three-phase transformer according to claim 3, wherein a primary transmission frame meshed with a primary bevel gear is installed in the transmission box, the secondary bevel gear is connected with a secondary transmission frame in a meshed mode, and the primary transmission frame is meshed with the secondary transmission frame.
5. The oil immersed three-phase transformer according to claim 1, wherein one end of the heat dissipation pipe network far away from the transmission cavity is connected with an auxiliary pipe, a piston block is installed in the auxiliary pipe, a hollowed-out cap is installed at the opening end of the auxiliary pipe, a control valve is installed at one side of the heat dissipation pipe network, and the heat dissipation pipe network is connected with the surface of the shell through a supporting rod.
6. The oil immersed three-phase transformer according to claim 1, wherein the transformation structure comprises a base, three groups of iron cores are mounted on the base, windings are wound on the iron cores, and the windings are connected with outgoing copper bars.
7. The oil immersed three-phase transformer according to claim 6, wherein the transformation structure further comprises a high-voltage bushing and a low-voltage bushing mounted on the housing, and the high-voltage bushing and the low-voltage bushing are connected with corresponding outgoing copper bars through wires, respectively.
8. The oil immersed type three-phase transformer according to claim 1, wherein a plurality of groups of radiating pipes communicated with the inside of the shell are arranged outside the shell, a supporting frame is arranged on the surface of the shell, an oil storage cabinet is arranged on the supporting frame, and the oil storage cabinet is connected with the shell.
9. The oil immersed three-phase transformer according to claim 1 or 8, wherein a pressure release valve is installed on the shell, an oil drain valve is installed on one side of the shell, and a plurality of groups of supporting legs are installed on the outer side of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311336721.5A CN117095911A (en) | 2023-10-17 | 2023-10-17 | Oil immersed three-phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311336721.5A CN117095911A (en) | 2023-10-17 | 2023-10-17 | Oil immersed three-phase transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117095911A true CN117095911A (en) | 2023-11-21 |
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| CN202311336721.5A Pending CN117095911A (en) | 2023-10-17 | 2023-10-17 | Oil immersed three-phase transformer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB374828A (en) * | 1929-12-20 | 1932-06-16 | Westinghouse Electric & Mfg Co | Improvements in or relating to cooling systems for electrical apparatus |
| JPH07283034A (en) * | 1994-04-01 | 1995-10-27 | Tokyo Electric Power Co Inc:The | Cooler and cooling method for transformer |
| CN112466605A (en) * | 2020-10-23 | 2021-03-09 | 牛启奎 | Safe radiating transformer |
| CN213277728U (en) * | 2020-11-25 | 2021-05-25 | 六盘水兴泰变压器有限公司 | Box-type phase change heat exchange device for oil-immersed transformer |
| CN215417787U (en) * | 2021-08-05 | 2022-01-04 | 张家界立开成套电器有限责任公司 | Transformer protection device for intelligent substation |
| CN116779295A (en) * | 2023-07-27 | 2023-09-19 | 江苏天威变压器有限公司 | Dry-type transformer capable of preventing coil from loosening |
-
2023
- 2023-10-17 CN CN202311336721.5A patent/CN117095911A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB374828A (en) * | 1929-12-20 | 1932-06-16 | Westinghouse Electric & Mfg Co | Improvements in or relating to cooling systems for electrical apparatus |
| JPH07283034A (en) * | 1994-04-01 | 1995-10-27 | Tokyo Electric Power Co Inc:The | Cooler and cooling method for transformer |
| CN112466605A (en) * | 2020-10-23 | 2021-03-09 | 牛启奎 | Safe radiating transformer |
| CN213277728U (en) * | 2020-11-25 | 2021-05-25 | 六盘水兴泰变压器有限公司 | Box-type phase change heat exchange device for oil-immersed transformer |
| CN215417787U (en) * | 2021-08-05 | 2022-01-04 | 张家界立开成套电器有限责任公司 | Transformer protection device for intelligent substation |
| CN116779295A (en) * | 2023-07-27 | 2023-09-19 | 江苏天威变压器有限公司 | Dry-type transformer capable of preventing coil from loosening |
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