CN115631928A - Transformer capable of accelerating oil circulation of transformer - Google Patents

Transformer capable of accelerating oil circulation of transformer Download PDF

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Publication number
CN115631928A
CN115631928A CN202211636511.3A CN202211636511A CN115631928A CN 115631928 A CN115631928 A CN 115631928A CN 202211636511 A CN202211636511 A CN 202211636511A CN 115631928 A CN115631928 A CN 115631928A
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China
Prior art keywords
oil
transformer
shell
conservator
inner cavity
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CN202211636511.3A
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CN115631928B (en
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谌国忠
周明文
黄亚勇
潘钧
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Jiangxi Guoxiang Electric Power Equipment Co ltd
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Jiangxi Guoxiang Electric Power Equipment Co ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/08Cooling; Ventilating
    • H01F27/10Liquid cooling
    • H01F27/12Oil cooling
    • H01F27/14Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/08Cooling; Ventilating
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/08Cooling; Ventilating
    • H01F27/085Cooling by ambient air
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/08Cooling; Ventilating
    • H01F27/22Cooling by heat conduction through solid or powdered fillings

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)

Abstract

The invention discloses a transformer capable of accelerating oil circulation of a transformer, and particularly relates to the technical field of transformers. According to the transformer capable of accelerating the circulation of the transformer oil, the transformer oil in the inner cavity of the oil conservator is pumped into the inner cavity of the oil storage shell under the action of the oil pump and the like, the sprayed transformer oil flows out obliquely upwards along the direction of the arc-shaped baffle plate under the action of the oil outlet holes and the arc-shaped baffle plate II, the process that the transformer oil flows obliquely upwards can be smoother under the action of the arc-shaped baffle plate II, and the circulation speed of the transformer oil can be obviously increased.

Description

Transformer capable of accelerating oil circulation of transformer
Technical Field
The invention relates to the technical field of transformers, in particular to a transformer capable of accelerating oil circulation of the transformer.
Background
A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). In electrical equipment and wireless circuits, the high-voltage power supply is commonly used for voltage lifting, impedance matching, safety isolation and the like; the transformer comprises a transformer body (iron core, winding, insulation and lead), transformer oil, an oil tank, a cooling device, a pressure regulating device, a protection device (a moisture absorber, a safety air passage, a gas relay, an oil storage cabinet, a temperature measuring device and the like) and an outlet sleeve.
The transformer oil is a mineral oil obtained by distillation and refining of natural petroleum, and is a mixture of pure, stable, low-viscosity, good-insulation and good-cooling liquid natural hydrocarbons obtained by acid-base refining of lubricating oil fractions in petroleum.
Chinese patent document CN216980275U discloses a power transformer for accelerating transformer oil circulation, which comprises a transformer body, a supporting frame and fan blades, wherein the supporting frame is fixedly arranged at the bottom of the transformer body, a mounting hole is formed in the bottom of the supporting frame, a filter screen is fixedly arranged in the mounting hole, a motor is fixedly arranged at the top of the filter screen, the fan blades are fixedly arranged on an output shaft of the motor, movable grooves are formed in two sides of the bottom of the supporting frame, and through clamping and matching of an inserting plate and the inner wall of the filter screen, quick mounting and dismounting of a heat dissipation assembly can be realized, cleaning and maintenance of the heat dissipation assembly can be quickly realized, and the reliability is high; however, the following problems still exist in the specific implementation process:
1. the active refrigeration structure is lacked, and when the external temperature is very high, the fan blades arranged through the active refrigeration structure cannot quickly achieve a good cooling effect on the transformer.
Because the transformer brings density variation through the change of transformer oil temperature, make high temperature hydraulic oil upwards remove, and after carrying out heat exchange through heat radiation fins etc. with the outside air and downwards remove, realize the purpose of transformer oil circulation, improve the radiating effect of transformer through increasing the flabellum in this application, and then promote the circulation speed of transformer oil, but this kind of method is for accelerating the speed of transformer oil circulation passively, lacks the structure of initiatively accelerating transformer oil circulation, and then leads to transformer oil circulation speed to promote unobviously.
Disclosure of Invention
The invention mainly aims to provide a transformer capable of accelerating oil circulation of the transformer, which can effectively solve the problems that the arranged fan blades cannot quickly achieve a good cooling effect on the transformer and the oil circulation speed of the transformer is not obviously increased due to the fact that the oil circulation speed of the transformer is passively accelerated.
In order to achieve the purpose, the invention adopts the technical scheme that:
a transformer capable of accelerating oil circulation of a transformer comprises a transformer shell, two supporting plates, two circular rings, an oil conservator, an iron core and an oil pump, wherein the two supporting plates are symmetrically fixed on the upper part of the left end of the transformer shell in a front-back mode;
the transformer shell comprises a transformer shell, and is characterized in that a turbine is arranged at the left part of the conservator, supercharging units are symmetrically arranged on the front and back of the bottom wall of an inner cavity of the transformer shell, a plurality of heat dissipation fins are arranged at the front end and the back end of the transformer shell and close to one ends of the transformer shell, circulation grooves communicated with the inner cavity of the transformer shell are formed in the heat dissipation fins, an oil return unit is arranged on the top wall of the inner cavity of the transformer shell, and an oil inlet pipe I and an oil inlet pipe II are arranged at the input end and the output end of an oil pump respectively.
Preferably, the middle part of the front side of the outer surface of the conservator is provided with a first mounting groove communicated with the rear side of the outer surface of the conservator, an inner cavity of the first mounting groove and an inner cavity of the conservator are jointly provided with a communicating shell, the upper part of the inner cavity of the conservator is provided with three oil storage units, the upper end of the communicating shell is provided with four extension units, the rear side of the upper part of the outer surface of the conservator is provided with an oil injection pipe communicated with the inner cavity of the conservator, and the upper part of the front side of the inner surface of the conservator is provided with an L-shaped baffle.
Preferably, the vertical cross sectional area at the rear part of the communicating shell is smaller than that at the front part of the communicating shell, the upper end of the communicating shell is provided with four second mounting grooves communicated with the inner cavity of the communicating shell, and the inner cavities of the second mounting grooves are sequentially provided with a heat conducting plate and a semiconductor refrigerating piece from top to bottom.
Preferably, the oil storage unit comprises a third baffle, a fourth baffle is arranged on the lower portion of the rear end of the third baffle, a transportation shell is arranged on the upper portion of the rear end of the third baffle, the lower end of the transportation shell penetrates through the front portion of the upper end of the fourth baffle and extends to the lower portion, and the transportation shell is of a Z-shaped structure and an inner cavity of the transportation shell is communicated with the upper portion of the front end of the third baffle.
Preferably, the extension unit includes four stand one, four two liang of a set of heat-conducting plate upper ends of locating the homonymy respectively of stand one, be located anterior two highly being less than the height of two stand one that are located the rear portion, four stand one upper end is equipped with S template one jointly, homonymy four lower extreme middle parts of baffle are equipped with two stand two, two lower extremes of stand are equipped with S template two jointly, the heat-conducting plate upper end rear portion of homonymy is located to two lower extreme rear portions of S template.
Preferably, the turbine input end and the turbine output end are respectively provided with a first oil return pipe and a second oil return pipe, one end, far away from the turbine, of the first oil return pipe penetrates through the left part of the outer surface of the conservator, extends to the middle part of the inner cavity of the conservator and is provided with a second shell, the rear end of the turbine is provided with a fixed shell, the rear end of the fixed shell is fixed at the left end of a communicating shell, the left part of the front end of the fixed shell and the right part of the front end of the fixed shell are symmetrically provided with a plurality of first through holes communicated with the inner cavity of the fixed shell, and the output end of the turbine penetrates through the middle part of the front end of the fixed shell, extends to the inner cavity of the fixed shell and is provided with a fan through a coupler.
Preferably, the oil return unit comprises an accumulation shell, the upper end of the accumulation shell is fixed on the top wall of an inner cavity of the transformer shell, a plurality of first arc-shaped baffles are arranged in the inner cavity of the accumulation shell, a second through hole communicated with the lower end of the accumulation shell is formed between every two adjacent first arc-shaped baffles, and one end, far away from the turbine, of the second oil return pipe penetrates through the middle of the left end of the accumulation shell and is communicated with the inner cavity of the accumulation shell.
Preferably, the first arc-shaped baffle plates are of arc-shaped structures, and the horizontal positions of the upper ends of the first arc-shaped baffle plates are sequentially increased from left to right.
Preferably, the pressurizing unit includes the oil storage casing, the one end that the transformer shell was kept away from to the oil storage casing is equipped with a plurality of cowl two and rectangular array and sets up a plurality of communicating oil outlet with the oil storage casing inner chamber, and is a plurality of cowl two distributes with adjacent one bank oil outlet is crisscross, the one end that advances oil pipe two and be close to the transformer shell runs through the transformer shell left end and extends to the transformer shell inner chamber and communicates with each other with two oil storage casing inner chambers respectively.
Preferably, a plurality of the oil outlet is the slope setting, just the centre of a circle at oil outlet both ends is on same straight line with the centre of a circle that is located its below cowl two.
Compared with the prior art, the invention has the following beneficial effects:
1. the transformer oil after being heated is extruded out of the inner cavity of the transformer shell under the action of the oil pump and flows back to the upper part of the inner cavity of the conservator, and because the semiconductor refrigeration sheets can generate low temperature in the electrified state, heat exchange can be carried out between the cold end surfaces of the four semiconductor refrigeration sheets and the transformer oil with high temperature, a better cooling effect can be realized compared with air cooling, the transformer can be actively and quickly cooled, and the semiconductor refrigeration sheets are small in size and cannot increase the size of the transformer.
2. The transformer oil in the inner cavity of the conservator is pumped out under the action of the oil pump, the oil inlet pipe I and the oil inlet pipe II and enters the inner cavity of the oil storage shell, the injection direction of the transformer oil is changed under the action of the oil pressure and the oil outlet holes, the transformer oil is obliquely and downwards sprayed out, the sprayed transformer oil is obliquely and upwards flowed out along the direction of the arc baffle II under the action of the arc baffle II below, the process that the transformer oil obliquely flows upwards can be smoother under the action of the arc baffle II, the transformer oil on two sides of the iron core can be obliquely and upwards collided, and the circulation speed of the transformer oil can be obviously increased.
3. According to the invention, after the transformer oil after being heated flows through the lower end of the horizontal part of the L-shaped baffle plate through the oil return pipe I, the transformer oil passes through the left part of the lower side of the outer surface of the S-shaped plate I positioned at the forefront part and flows backwards, then a part of the transformer oil flows leftwards under the action of the arc at the rear part of the outer surface of the S-shaped plate I, the other part of the transformer oil flows into the cavity formed by the S-shaped plate I and the S-shaped plate II, then the transformer oil moves forwards, finally the transformer oil moves to the upper part of the outer surface of the S-shaped plate and continuously moves upwards, the transformer oil in the arc structure at the rear part of the outer surface of the S-shaped plate I flows in a rotating and circulating mode under the action of oil pressure and the arc structure, under the action of the four extension units, the contact time between the transformer oil and the cold end surface on the semiconductor refrigeration sheet can be prolonged, the transformer oil is fully cooled, and a better cooling effect is achieved.
4. In the invention, the turbine can be driven to operate in the process of driving the transformer oil to flow by the arranged oil pump, and the fan is driven by the turbine to rotate to actively cool the hot end of the semiconductor refrigeration sheet, so that the semiconductor refrigeration sheet has a better cooling effect on the transformer oil, the power generated by the oil pump can be more fully utilized, and the energy loss is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the present invention showing the effect of explosion;
FIG. 3 is a schematic view of the overall structure of the present invention from another perspective;
FIG. 4 is a schematic cross-sectional view of the conservator of the present invention;
FIG. 5 is an enlarged view of the invention at A in FIG. 4;
FIG. 6 is a right side view of the conservator of the present invention;
FIG. 7 is an enlarged view of the invention at B of FIG. 6;
FIG. 8 is a detailed view of the turbine and the communicating casing of the present invention;
FIG. 9 is a schematic cross-sectional view of an oil return unit of the present invention;
FIG. 10 is a front exploded view of the oil return unit of the present invention;
fig. 11 is a schematic right sectional view of the pressurizing unit of the present invention.
In the figure: 1. a transformer housing; 2. heat dissipation fins; 3. a support plate; 4. an oil conservator; 41. a first mounting groove; 42. a communicating shell; 421. a second mounting groove; 422. a heat conducting plate; 43. an L-shaped baffle plate; 44. an oil storage unit; 441. a baffle III; 442. transporting the housing; 443. a baffle plate IV; 45. an extension unit; 451. a first upright post; 452. s type plate I; 453. a second upright post; 454. s type plate II; 46. an oil filling pipe; 5. a turbine; 51. a first oil return pipe; 52. an oil return pipe II; 53. a second shell; 54. a fixed housing; 55. a first through hole; 56. a fan; 6. an oil return unit; 61. an accumulation housing; 62. a second through hole; 63. a first arc-shaped baffle plate; 7. a pressurizing unit; 71. an oil storage housing; 72. a second arc-shaped baffle plate; 73. an oil outlet hole; 8. an iron core; 9. an oil pump; 91. an oil inlet pipe I; 92. an oil inlet pipe II; 10. a circulation tank; 11. a circular ring.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.
Example one
As shown in fig. 1, 2, 3, 9 and 11, the transformer capable of accelerating the circulation of transformer oil comprises a transformer housing 1, two support plates 3, two rings 11, an oil conservator 4, an iron core 8 and an oil pump 9, wherein the two support plates 3 are symmetrically fixed at the upper part of the left end of the transformer housing 1 in the front-back direction, the two rings 11 are respectively fixed at the upper ends of the two support plates 3, the oil conservator 4 is arranged in the inner cavities of the two rings 11, the oil pump 9 is arranged at the lower part of the left end of the transformer housing 1, and the iron core 8 is fixed at the middle part of the bottom wall of the inner cavity of the transformer housing 1;
the transformer is a device for changing alternating voltage by using the principle of electromagnetic induction, and mainly comprises a primary coil, a secondary coil and an iron core (magnetic core).
The conventional transformer core is generally made of silicon steel sheets, because the silicon steel itself is a magnetic substance with strong magnetic conductivity, in the electrified coil, it can generate larger magnetic induction intensity, thereby reducing the volume of the transformer.
A primary coil and a secondary coil are symmetrically wound on the outer surface of the iron core 8;
the transformer oil is a mineral oil obtained by distillation and refining in natural petroleum, and is a mixture of pure, stable, low-viscosity, good-insulation and good-cooling liquid natural hydrocarbons obtained by acid-base refining treatment of lubricating oil fractions in the petroleum.
Therefore, a transformer main body can be formed by the transformer shell 1 and the iron core 8, transformer oil can be filled in the inner cavity of the transformer shell 1, a certain amount of transformer oil can be stored through the arranged oil conservator 4 and is used for supplementing the transformer oil to the inner cavity of the transformer shell 1 in time, and when the iron core 8 generates heat in the operation process to cause the transformer oil to expand, redundant oil in the inner cavity of the transformer shell 1 can enter the inner cavity of the oil conservator 4, so that the pressure in the inner cavity of the transformer shell 1 is reduced, and the normal operation of the transformer main body is ensured;
specifically, a turbine 5 is arranged at the left part of an oil conservator 4, supercharging units 7 are symmetrically arranged at the front and back of the bottom wall of an inner cavity of a transformer shell 1, a plurality of radiating fins 2 are arranged at the front end and the back end of the transformer shell 1, a circulating groove 10 communicated with the inner cavity of the transformer shell 1 is formed in one end, close to the transformer shell 1, of each radiating fin 2, an oil return unit 6 is arranged on the top wall of the inner cavity of the transformer shell 1, and an oil inlet pipe I91 and an oil inlet pipe II 92 are respectively arranged at the input end and the output end of an oil pump 9;
therefore, the middle of one side, connected with the inner cavity of the transformer shell 1, of the circulation groove 10 can be closed through the arranged pressurizing unit 7, so that the transformer oil in the inner cavity of the transformer shell 1 enters the inner cavity of the circulation groove 10 through the upper part of the inner cavity of the circulation groove 10, is cooled by the cooling fins 2 and then returns to the inner cavity of the transformer shell 1 through the lower part of the inner cavity of the circulation groove 10, and the transformer oil is locally cooled.
Specifically, in order to accelerate the circulation of the transformer oil in the inner cavity of the transformer casing 1, referring to fig. 2 and 11, the pressurizing unit 7 includes an oil storage casing 71, one end of the oil storage casing 71, which is far away from the transformer casing 1, is provided with a plurality of arc-shaped baffle plates two 72, and a rectangular array is provided with a plurality of oil outlet holes 73 communicated with the inner cavity of the oil storage casing 71, the plurality of arc-shaped baffle plates two 72 and the adjacent row of oil outlet holes 73 are distributed in a staggered manner, and one end of the oil inlet pipe two 92, which is close to the transformer casing 1, penetrates through the left end of the transformer casing 1, extends to the inner cavity of the transformer casing 1 and is respectively communicated with the inner cavities of the two oil storage casings 71;
furthermore, the oil outlet holes 73 are obliquely arranged, and the circle centers of the two ends of the oil outlet holes 73 and the circle center of the arc baffle plate II 72 positioned below the oil outlet holes are positioned on the same straight line;
therefore, the transformer oil in the inner cavity of the oil conservator 4 is pumped out under the action of the oil pump 9, the oil inlet pipe I91 and the oil inlet pipe II 92 and enters the inner cavity of the oil storage shell 71, the injection direction of the transformer oil is changed under the action of the oil pressure and the oil outlet holes 73, the transformer oil is sprayed obliquely downwards, the sprayed transformer oil flows obliquely upwards along the direction of the arc baffle II 72 under the action of the arc baffle II 72 below, the process that the transformer oil flows obliquely upwards is smoother under the action of the arc baffle II 72, the transformer oil on two sides of the iron core 8 can be flushed oppositely, the circulating speed of the transformer oil can be increased, the purpose of quickly taking away the heat generated by the iron core 8 is realized, and the heat dissipation effect of the transformer oil is improved.
Specifically, in order to enable the transformer oil to uniformly flow out in the process of the upward movement of the transformer oil through the opposite impact, referring to fig. 9 and 10, in the present embodiment, the oil return unit 6 includes an accumulation housing 61, the upper end of the accumulation housing 61 is fixed to the top wall of the inner cavity of the transformer housing 1, a plurality of arc-shaped baffles one 63 are arranged in the inner cavity of the accumulation housing 61, a through hole two 62 communicated with the lower end of the accumulation housing 61 is formed between two adjacent arc-shaped baffles one 63, and one end of the oil return pipe two 52, which is far away from the turbine 5, penetrates through the middle part of the left end of the accumulation housing 61 and is communicated with the inner cavity of the accumulation housing 61;
further, the plurality of arc-shaped baffles I63 are all arc-shaped structures, and the horizontal positions of the upper ends of the plurality of arc-shaped baffles I63 are sequentially increased from left to right;
as can be seen from the above, the transformer oil after being heated enters the inner cavity of the oil return unit 6 through the second plurality of through holes 62 under the action of the second arc-shaped baffle 72, the oil outlet 73 and the self heating and expansion of the transformer oil, and then leaves the inner cavity of the oil return unit 6 through the second oil return pipe 52;
in addition, according to the principle that the smaller the cross-sectional area is under the same pressure, the larger the flow velocity of the liquid is, since the horizontal height of the upper end of the arc-shaped baffle I63 is sequentially increased from left to right, the flow velocity of the transformer oil on the right side of the arc-shaped baffle I63 on the rightmost part is greater than that of the transformer oil on the left part, and finally the transformer oil with the increased temperature uniformly flows out through the oil return pipe II 52, so that the heat in the transformer can be better taken out.
Example two
The structure for rapidly cooling the transformer oil after temperature rise is added on the basis of the first embodiment, so that the purpose that the transformer can stably run is achieved.
Specifically, in order to achieve the above object, referring to fig. 4, in this embodiment, a first mounting groove 41 communicated with the rear side of the outer surface of the conservator 4 is formed in the middle of the front side of the outer surface of the conservator 4, a communicating casing 42 is jointly arranged in the inner cavities of the two first mounting grooves 41 and the inner cavity of the conservator 4, three oil storage units 44 are arranged at the upper part of the inner cavity of the conservator 4, four extension units 45 are arranged at the upper end of the communicating casing 42, an oil filling pipe 46 communicated with the inner cavity of the conservator 4 is arranged at the rear side of the upper part of the outer surface of the conservator 4, and an L-shaped baffle 43 is arranged at the upper part of the front side of the inner surface of the conservator 4;
therefore, the transformer oil can be supplemented to the inner cavity of the oil conservator 4 through the arranged oil filling pipe 46, the transformer oil in the inner cavity of the transformer shell 1 can be extruded out in the operation process of the oil pump 9, enters the left side of the inner cavity of the oil conservator 4, the outflow area of the transformer oil is increased through the second shell 53, and the purpose of cooling the transformer oil is achieved under the action of the oil storage unit 44, the extension unit 45 and the like.
Further, in order to rapidly cool the transformer oil after temperature rise, referring to fig. 4, 5 and 6, in this embodiment, the inner cavities of the two first mounting grooves 41 and the inner cavity of the conservator 4 are jointly provided with the communicating shell 42, the vertical cross-sectional area of the rear part of the communicating shell 42 is smaller than that of the front part of the communicating shell 42, the upper end of the communicating shell 42 is provided with four second mounting grooves 421 communicated with the inner cavity of the communicating shell 42, and the inner cavities of the four second mounting grooves 421 are sequentially provided with the heat conducting plate 422 and the semiconductor refrigerating sheet from top to bottom;
furthermore, four extension units 45 are arranged at the upper end of the communicating shell 42, each extension unit 45 comprises four first upright posts 451, each two of the first four upright posts 451 are respectively arranged at the upper ends of the heat conducting plates 422 on the same side, the height of the first two upright posts 451 at the front part is smaller than that of the first two upright posts 451 at the rear part, the upper ends of the first four upright posts 451 are jointly provided with a first S-shaped plate 452, the middle part of the lower end of the baffle plate four 443 on the same side is provided with a second two upright posts 453, the lower ends of the second two upright posts 453 are jointly provided with a second S-shaped plate 454, and the rear part of the lower end of the second S-shaped plate 454 is arranged at the rear part of the upper end of the heat conducting plates 422 on the same side;
according to the above, after the transformer oil after temperature rise flows through the lower end of the horizontal part of the L-shaped baffle 43 through the oil return pipe I51, the area of the transformer oil flowing out is increased through the shell II 53, the transformer oil flows backwards through the left part of the lower side of the outer surface of the S-shaped plate I452 positioned at the forefront part, then a part of the transformer oil flows leftwards under the action of the arc-shaped structure at the rear part of the outer surface of the S-shaped plate I452, the other part of the transformer oil flows into the cavity formed by the S-shaped plate I452 and the S-shaped plate II 454, then the transformer oil moves forwards and finally moves to the upper part of the outer surface of the S-shaped plate II 454 and continuously moves upwards, the transformer oil in the arc-shaped structure at the rear part of the outer surface of the S-shaped plate I452 circularly rotates under the action of oil pressure and the arc-shaped structure, the contact time between the transformer oil and the cold end surface on the semiconductor refrigeration piece is prolonged, the transformer oil is fully cooled, the better temperature reduction effect is achieved, and the transformer oil after temperature is impacted by the oil pressure, and flows into the cavity formed by the S-shaped plate I452 and the S-shaped plate II 454 and then moves upwards.
Further, in order to prolong the cooling time of transformer oil, referring to fig. 5, in this embodiment, the oil storage unit 44 includes a third baffle 441, a fourth baffle 443 is disposed at a lower portion of a rear end of the third baffle 441, a transport housing 442 is disposed at an upper portion of the rear end of the third baffle 441, a lower end of the transport housing 442 extends to a lower portion through a front portion of an upper end of the fourth baffle 443, the transport housing 442 has a Z-shaped structure, and an inner cavity of the transport housing 442 is communicated with an upper portion of a front end of the third baffle 441;
the transportation shell 442 is of a Z-shaped structure, so that the moving direction of the transformer oil can be changed, the transformer oil can move in the horizontal direction before entering the lower portion of the outer surface of the adjacent S-shaped plate 452, the phenomenon that the transformer oil generates turbulence due to collision in the moving process is avoided, and the flowing speed of the transformer oil is improved.
Therefore, after the transformer oil with the preliminary cooling function is moved to the lower end of the baffle plate four 443 on the same side through the inner cavity of the conveying shell 442, the transformer oil circulates again through the space formed by the first S-shaped plate 452 and the second S-shaped plate 454 on the same side and the communicating shell 42 and the like to be cooled, and circulates accordingly until the transformer oil moves to the rear end of the baffle plate three 441 on the rearmost side and enters the lower part of the inner cavity of the conservator 4 through the gap between the rear side of the communicating shell 42 and the inner cavity of the conservator 4 to be stored, and is pumped out through the oil pump 9 and sprayed into the inner cavity of the transformer shell 1 through the oil outlet 73 and the like to cool the inside of the transformer, so that the transformer keeps a good running state, the service life of the transformer is prolonged, and the cost of power transmission is reduced.
EXAMPLE III
In the embodiment, the turbine 5 for cooling the hot end of the semiconductor refrigerating sheet is added on the basis of the second embodiment, so that the semiconductor refrigerating sheet can generate better refrigerating and cooling effects.
Specifically, in order to fully utilize the pressure generated by the oil pump 9 during operation, referring to fig. 8, in this embodiment, an input end and an output end of the turbine 5 are respectively provided with a second oil return pipe 52 and a first oil return pipe 51, one end of the first oil return pipe 51, which is far away from the turbine 5, penetrates through the left part of the outer surface of the conservator 4, extends to the middle part of the inner cavity of the conservator 4 and is provided with a second shell 53, the rear end of the turbine 5 is provided with a fixed shell 54, the rear end of the fixed shell 54 is fixed at the left end of the communicating shell 42, the left part and the right part of the front end of the fixed shell 54 are symmetrically provided with a plurality of first through holes 55 communicated with the inner cavity of the fixed shell 54, the output end of the turbine 5 penetrates through the middle part of the front end of the fixed shell 54, extends to the inner cavity of the fixed shell 54 and is provided with a fan 56 through a coupler;
the above contents are known by combining the first embodiment and the second embodiment, the transformer oil after temperature rise enters the inner cavity of the turbine 5 through the oil return unit 6 and the oil return pipe two 52 under the action of the oil pump 9, the turbine 5 is driven to rotate through the flowing of the transformer oil, and then the fan 56 is driven to rotate, outside air is pumped into the inner cavity of the communicating shell 42 through the plurality of first through holes 55 to cool the hot end of the semiconductor refrigeration piece, after the hot end of the semiconductor refrigeration piece is cooled, a better refrigeration effect can be generated at the cold end of the semiconductor refrigeration piece, so that the oil pressure generated by the oil pump 9 can be fully utilized, the electric energy is saved, and the waste of electric power is reduced.
It should be noted that the specific installation manners of the transformer casing 1, the turbine 5, the iron core 8 and the oil pump 9, the connection manners of the circuits and the control method adopted in the first embodiment are all conventional designs, and detailed descriptions thereof are omitted in the present invention. The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a can accelerate transformer oil endless transformer, includes transformer housing (1), two backup pads (3), two rings (11), conservator (4), iron core (8) and oil pump (9), its characterized in that: the two supporting plates (3) are symmetrically fixed to the upper portion of the left end of the transformer shell (1) in a front-back mode, the two circular rings (11) are fixed to the upper ends of the two supporting plates (3) respectively, the oil conservators (4) are arranged in inner cavities of the two circular rings (11), the oil pump (9) is arranged on the lower portion of the left end of the transformer shell (1), and the iron core (8) is fixed to the middle of the bottom wall of the inner cavity of the transformer shell (1);
conservator (4) left part is equipped with turbine (5), transformer housing (1) inner chamber diapire front and back symmetry is equipped with pressure boost unit (7), transformer housing (1) front end and rear end all are equipped with a plurality of heat radiation fins (2), and are a plurality of heat radiation fins (2) are close to the one end of transformer housing (1) and all offer with the communicating circulation groove (10) of transformer housing (1) inner chamber, transformer housing (1) inner chamber roof is equipped with oil return unit (6), the input and the output of oil pump (9) are equipped with respectively into oil pipe (91) and advance oil pipe two (92).
2. The transformer capable of accelerating the circulation of transformer oil according to claim 1, wherein: the oil conservator is characterized in that a first mounting groove (41) communicated with the rear side of the outer surface of the oil conservator (4) is formed in the middle of the front side of the outer surface of the oil conservator (4), a first mounting groove (41) is formed in the middle of the front side of the outer surface of the oil conservator (4), a communicating shell (42) is jointly arranged in an inner cavity of the first mounting groove (41) and an inner cavity of the oil conservator (4), three oil storage units (44) are arranged on the upper portion of the inner cavity of the oil conservator (4), four extension units (45) are arranged at the upper end of the communicating shell (42), an oil filling pipe (46) communicated with the inner cavity of the oil conservator (4) is arranged on the rear side of the upper portion of the outer surface of the oil conservator (4), and an L-shaped baffle (43) is arranged on the upper portion of the front side of the inner surface of the oil conservator (4).
3. The transformer capable of accelerating the circulation of transformer oil according to claim 2, wherein: the vertical cross sectional area at the rear part of the communication shell (42) is smaller than the vertical cross sectional area at the front part of the communication shell (42), four mounting grooves two (421) communicated with the inner cavity of the communication shell (42) are formed in the upper end of the communication shell (42), and the inner cavities of the mounting grooves two (421) are sequentially provided with a heat conduction plate (422) and semiconductor refrigeration pieces from top to bottom.
4. The transformer capable of accelerating the circulation of transformer oil according to claim 3, wherein: the oil storage unit (44) comprises a baffle plate III (441), a baffle plate IV (443) is arranged on the lower portion of the rear end of the baffle plate III (441), a transportation shell (442) is arranged on the upper portion of the rear end of the baffle plate III (441), the lower end of the transportation shell (442) penetrates through the front portion of the upper end of the baffle plate IV (443) and extends to the lower portion, the transportation shell (442) is of a Z-shaped structure, and the inner cavity of the transportation shell (442) is communicated with the upper portion of the front end of the baffle plate III (441).
5. The transformer capable of accelerating the circulation of transformer oil according to claim 4, wherein: extension unit (45) include four stand one (451), four two liang of a set of heat-conducting plate (422) upper end of locating the homonymy respectively of stand one (451), be located anterior two the height that highly is less than two stand one (451) that are located the rear portion of stand one (451) upper end is equipped with S template one (452) jointly, homonymy baffle four (443) lower extreme middle part is equipped with two stands (453), two stand two (453) lower extreme is equipped with S template two (454) jointly, heat-conducting plate (422) upper end rear portion of homonymy is located to S template two (454) lower extreme rear portion.
6. The transformer capable of accelerating the circulation of transformer oil according to claim 2, wherein: turbine (5) input and output are equipped with respectively and return oil pipe two (52) and return oil pipe one (51), return oil pipe one (51) and keep away from the one end of turbine (5) and run through conservator (4) surface left part and extend to conservator (4) inner chamber middle part and be equipped with shell two (53), turbine (5) rear end is equipped with fixed casing (54), fixed casing (54) rear end is fixed in intercommunication casing (42) left end, fixed casing (54) front end left part and front end right part symmetry have been seted up a plurality of and fixed casing (54) communicating through-hole one (55) of inner chamber, the output of turbine (5) runs through fixed casing (54) front end middle part and extends to fixed casing (54) inner chamber and is equipped with fan (56) through the shaft coupling.
7. The transformer capable of accelerating the circulation of transformer oil according to claim 6, wherein: oil return unit (6) are including gathering shell (61), gather shell (61) upper end fixed with transformer housing (1) inner chamber roof, it is equipped with a plurality of cowl (63) to gather shell (61) inner chamber, adjacent two set up between cowl (63) with gather shell (61) lower extreme communicating through-hole two (62), the one end that turbine (5) were kept away from to oil return pipe two (52) is run through and is gathered shell (61) left end middle part and communicate with each other with gathering shell (61) inner chamber.
8. The transformer capable of accelerating the circulation of transformer oil according to claim 7, wherein: a plurality of the first arc-shaped baffle plates (63) are of arc-shaped structures, and the horizontal positions of the upper ends of the first arc-shaped baffle plates (63) are sequentially increased from left to right.
9. The transformer capable of accelerating the circulation of transformer oil according to claim 1, wherein: the pressure boost unit (7) include oil storage casing (71), the one end that transformer shell (1) was kept away from in oil storage casing (71) is equipped with a plurality of cowl two (72) and rectangle array and has seted up a plurality of communicating oil outlet (73) with oil storage casing (71) inner chamber, and is a plurality of cowl two (72) and adjacent one line oil outlet (73) crisscross distribution, the one end that advances oil pipe two (92) and is close to transformer shell (1) runs through transformer shell (1) left end and extends to transformer shell (1) inner chamber and communicates with each other with two oil storage casing (71) inner chambers respectively.
10. The transformer capable of accelerating the circulation of transformer oil according to claim 9, wherein: a plurality of oil outlet (73) are the slope setting, just the centre of a circle at oil outlet (73) both ends is on same straight line with the centre of a circle that is located its below cowl two (72).
CN202211636511.3A 2022-12-20 2022-12-20 Transformer capable of accelerating oil circulation of transformer Active CN115631928B (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN116978665A (en) * 2023-09-14 2023-10-31 广州市兆能有限公司 Heat abstractor for oil-immersed overload transformer

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GB1368696A (en) * 1971-06-08 1974-10-02 Nouvelle De Fabrication Pour L Transformer-rectifier apparatus
CN103727821A (en) * 2013-09-18 2014-04-16 张伟 Round header shell-and-tube water storage central heating multi-pipe heat-conducting heat exchanger and production technique thereof
CN110473695A (en) * 2018-05-10 2019-11-19 浙江铭润市政园林有限公司 A kind of municipal works intelligent cooling explosion-proof transformer
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116978665A (en) * 2023-09-14 2023-10-31 广州市兆能有限公司 Heat abstractor for oil-immersed overload transformer
CN116978665B (en) * 2023-09-14 2023-12-19 广州市兆能有限公司 Heat abstractor for oil-immersed overload transformer

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Denomination of invention: A Transformer that Can Accelerate Transformer Oil Circulation

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