CN113990623A - Low-voltage transformer cooling structure - Google Patents

Low-voltage transformer cooling structure Download PDF

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Publication number
CN113990623A
CN113990623A CN202111063088.8A CN202111063088A CN113990623A CN 113990623 A CN113990623 A CN 113990623A CN 202111063088 A CN202111063088 A CN 202111063088A CN 113990623 A CN113990623 A CN 113990623A
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China
Prior art keywords
low
voltage transformer
pipe
side wall
shell
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Pending
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CN202111063088.8A
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Chinese (zh)
Inventor
楚良
林涛
张伟
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Huaneng Jiaxiang Power Generation Co ltd
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Huaneng Jiaxiang Power Generation Co ltd
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Priority to CN202111063088.8A priority Critical patent/CN113990623A/en
Publication of CN113990623A publication Critical patent/CN113990623A/en
Pending legal-status Critical Current

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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
    • H01F27/16Water cooling
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/08Cooling; Ventilating

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

Abstract

The invention discloses a low-voltage transformer cooling structure, relating to the technical field of low-voltage transformers, and comprising: the device comprises a shell, wherein a low-voltage transformer is mounted at the bottom of the inner side wall of the shell through a base, the top of the shell is fixedly connected with a communicating pipe, the top of the communicating pipe is fixedly connected with a collecting hopper, and the inner side wall of the collecting hopper is fixedly connected with a filter screen; the driving device is arranged on the top of the inner side wall of the shell; the low-voltage transformer is cooled in a water cooling and air cooling combined mode, so that the cooling efficiency is ensured, the air outside the shell is cooled, the environment temperature of the low-voltage transformer is lower, the heat dissipation efficiency of the low-voltage transformer is further ensured, the working efficiency of the low-voltage transformer is further ensured, the low-voltage transformer is prevented from being damaged due to high temperature, the service life of the low-voltage transformer is prolonged, and resources are saved.

Description

Low-voltage transformer cooling structure
Technical Field
The invention relates to the technical field of low-voltage transformers, in particular to a cooling structure of a low-voltage transformer.
Background
The transformer with low voltage below 600V becomes a low-voltage transformer. A low-voltage transformer is a device that is composed of a primary coil, a secondary coil, and an iron core (magnetic core), and changes voltage by electromagnetic induction. 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 mainly has the following functions: voltage transformation; current transformation, impedance transformation; isolating; voltage regulation (magnetic saturation transformer), etc. The low voltage transformer should be vacuum cast, encapsulated in a molded resin, 60Hz, F-rated insulation, meet IEC726 specifications, and meet the requirements for capacity, voltage, phase number, and wiring as shown. The low voltage transformer has a primary winding and a secondary winding, and the rated voltage of the primary winding is respectively provided with two full-capacity taps with the normal voltage of 2.5 percent. The low voltage transformer should be installed on the base which can isolate and reduce vibration and noise, and the iron core and coil should be fixed to bear the mechanical stress generated in case of line fault, and can bear the vibration and impact force generated in the transportation process of 16460 simplified version 16460-6V 2.02002/11/25.
The existing low-voltage transformer is used in an area with more rainfall, and due to the continuous work of the low-voltage transformer, the heat generated by the work of the low-voltage transformer is more, but the existing cooling structure cannot utilize external rainwater to effectively dissipate the heat inside the low-voltage transformer, so that the workload of the transformer is larger, the service life of the low-voltage transformer is shortened, and the rainwater erodes the outer surface of the low-voltage transformer for a long time, so that the water seepage condition occurs inside the low-voltage transformer, and dangers occur.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, when the low-voltage transformer is used in an area with much rainfall, the low-voltage transformer generates more heat during working due to continuous working of the low-voltage transformer, but the existing cooling structure cannot effectively dissipate heat inside the low-voltage transformer by using external rainwater, so that the working load of the transformer is larger, the service life of the low-voltage transformer is shortened, and dangers are caused due to the fact that the rainwater erodes the outer surface of the low-voltage transformer for a long time and water seepage occurs inside the low-voltage transformer.
In order to achieve the purpose, the invention adopts the following technical scheme:
a low-voltage transformer cooling structure comprising:
the device comprises a shell, wherein a low-voltage transformer is mounted at the bottom of the inner side wall of the shell through a base, the top of the shell is fixedly connected with a communicating pipe, the top of the communicating pipe is fixedly connected with a collecting hopper, and the inner side wall of the collecting hopper is fixedly connected with a filter screen;
the driving device is arranged at the top of the inner side wall of the shell and is used for providing driving force for the work of the whole structure;
the cooling assembly is used for cooling the external environment of the shell and absorbing the internal temperature of the shell, and the cooling assembly is installed on the shell;
the flow guide assembly is used for guiding outside air and is arranged inside the shell;
and the conveying mechanism is used for conveying rainwater and conveying the air in the shell, and is fixedly connected with the output end of the driving device.
Preferably, the driving device comprises a driving motor, a supporting frame, a fan and a rotating shaft; the bottom of the driving motor is fixedly connected with the top of the support frame, the top of the support frame is fixedly connected with the top of the inner side wall of the shell, the bottom of the fan is fixedly connected with an output shaft of the driving motor, the outer side wall of the fan is fixedly connected with the inner side wall of the rotating shaft, and the outer side wall of the rotating shaft is connected with the top of the shell through a bearing.
Preferably, the cooling assembly comprises a cooling pipe, a drainage plate, a connecting pipe, a spray head and a drain pipe; the one end of cooling tube runs through the lateral wall of communicating pipe and extends to the inside wall of communicating pipe, the inside wall of cooling tube with the one end fixed connection of drainage plate, the other end of drainage plate with the one end fixed connection of connecting pipe, the tip of shower nozzle with the other end fixed connection of connecting pipe, the other end of cooling tube runs through the lateral wall of drain pipe and extends to the inside wall of drain pipe.
Preferably, the guide assembly comprises an air inlet pipe, a guide plate and guide vanes; the air inlet pipe is arranged at the bottom far away from the guide vanes, and the end parts of the guide vanes are connected with the end parts of the guide vanes through bearings.
Preferably, the conveying mechanism comprises a conveying blade, a conveying pipe and a one-way air outlet; the conveying blade is installed and is kept away from the bottom of conveyer pipe, one-way gas outlet is seted up the top of conveyer pipe.
Preferably, the end of the conveying pipe penetrates through the side wall of the rotating shaft and extends to the inner side wall of the rotating shaft, and the inner side wall of the conveying blade is fixedly connected with the outer side wall of the rotating shaft.
Preferably, the intake pipe is installed the bottom of casing, the intake pipe runs through the bottom of casing and extends to the inside wall bottom of casing, the bottom fixedly connected with dust screen of intake pipe, the lateral wall of guide plate with the inside wall fixed connection of casing.
Preferably, the cooling pipe is installed inside a sidewall of the housing, and the connection pipe penetrates the sidewall of the housing and extends to the outside of the housing.
Compared with the prior art, the invention has the beneficial effects that:
1. when the low-voltage transformer is used, rainwater at the top of the structure is collected by the collecting hopper, the fan is rotated by starting the driving motor to rotate, the rotating shaft is driven to rotate, the conveying blades are driven to rotate by the rotation of the rotating shaft, water in the collecting hopper is pumped into the cooling pipe by the conveying blades through the communicating pipe, the cooling pipe is arranged in the shell, the temperature in the shell is cooled to a certain degree, when the rainwater flows in the cooling pipe, a part of the rainwater enters the spray head through the connecting pipe under the drainage effect of the drainage plate, and the spray head atomizes and sprays the rainwater, so that the air outside the shell is effectively cooled, the low-voltage transformer arranged in the shell is effectively cooled, the working efficiency of the low-voltage transformer is ensured, and the service life of the low-voltage transformer is prolonged.
2. The fan is rotated by the rotation of the driving motor, so as to drive the rotating shaft to rotate, the rotation of the fan can filter the air around the shell cooled by the cooling component through the dustproof net, the air is pumped into the shell through the air inlet pipe, and the guide vanes are blown to rotate after the outside air enters the shell, so that the outside air can be blown to the low-voltage transformer, then the air after absorbing heat to the low-voltage transformer enters the conveying pipe through the rotating shaft after being extracted by the fan, the rotation of the rotating shaft enables the conveying pipe to rotate and finally the conveying pipe is uniformly discharged into rainwater stored in the collecting hopper through the one-way air outlet, so that the further heat dissipation of the low-voltage transformer is realized, and the rainwater is heated to a certain degree, so that the rainwater atomized by the spray head can be quickly evaporated, and the heat dissipation efficiency of the low-voltage transformer is further improved.
In summary, the following steps: the low-voltage transformer is cooled in a water cooling and air cooling combined mode, so that the cooling efficiency is ensured, the air outside the shell is cooled, the environment temperature of the low-voltage transformer is lower, the heat dissipation efficiency of the low-voltage transformer is further ensured, the working efficiency of the low-voltage transformer is further ensured, the low-voltage transformer is prevented from being damaged due to high temperature, the service life of the low-voltage transformer is prolonged, and resources are saved.
Drawings
Fig. 1 is a schematic front perspective view of a cooling structure of a low voltage transformer according to the present invention;
fig. 2 is a schematic bottom perspective view of a cooling structure of a low-voltage transformer according to the present invention;
FIG. 3 is a schematic view of an elevational, cross-sectional, oblique perspective structure of a cooling structure of a low voltage transformer according to the present invention;
FIG. 4 is a schematic top cross-sectional perspective view of a cooling structure of a low voltage transformer according to the present invention;
FIG. 5 is a schematic diagram of a front-side middle-section three-dimensional structure of a cooling structure of a low-voltage transformer according to the present invention;
fig. 6 is an enlarged schematic structural diagram of a portion a in fig. 3 of a cooling structure of a low-voltage transformer according to the present invention;
fig. 7 is an enlarged schematic structural diagram at B in fig. 4 of a cooling structure of a low voltage transformer according to the present invention;
fig. 8 is an enlarged schematic structural diagram of a cooling structure of a low voltage transformer in fig. 5 at C.
In the figure: 1. a housing; 2. a collecting hopper; 3. filtering with a screen; 4. a dust screen; 5. a drive device; 51. a drive motor; 52. a support frame; 53. a fan; 54. a rotating shaft; 6. a cooling assembly; 61. a cooling tube; 62. a drainage plate; 63. a connecting pipe; 64. a spray head; 65. a drain pipe; 7. a flow guide assembly; 71. an air inlet pipe; 72. a baffle; 73. a guide vane; 8. a conveying mechanism; 81. a conveying blade; 82. a delivery pipe; 83. a one-way air outlet; 9. a communication pipe is provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 8, a low voltage transformer cooling structure includes:
the device comprises a shell 1, wherein a low-voltage transformer is mounted at the bottom of the inner side wall of the shell 1 through a base, a communicating pipe 9 is fixedly connected to the top of the shell 1, a collecting hopper 2 is fixedly connected to the top of the communicating pipe 9, and a filter screen 3 is fixedly connected to the inner side wall of the collecting hopper 2;
the driving device 5 is installed at the top of the inner side wall of the shell 1, and the driving device 5 is used for providing driving force for the work of the whole structure;
the cooling assembly 6 is used for cooling the external environment of the shell 1 and absorbing the internal temperature of the shell 1, and the cooling assembly 6 is installed on the shell 1;
the flow guide assembly 7 is used for guiding the outside air, and the flow guide assembly 7 is arranged inside the shell 1;
the conveying mechanism 8 is used for conveying rainwater and conveying air in the shell 1, and the conveying mechanism 8 is fixedly connected with the output end of the driving device 5;
through the setting of above-mentioned structure, realized the collection to the rainwater, prevent that the rainwater from washing away the surface of this structure for a long time, lead to the emergence of the corruption condition, lead to the rainwater to get into the inside of casing 1 even for low voltage transformer breaks down, has carried out effectual protection to low voltage transformer, and through the collection of rainwater, has realized the effective heat dissipation to the low voltage transformer of casing 1 internally mounted.
Wherein, the driving device 5 comprises a driving motor 51, a supporting frame 52, a fan 53 and a rotating shaft 54; the bottom of the driving motor 51 is fixedly connected with the top of the support frame 52, the top end of the support frame 52 is fixedly connected with the top of the inner side wall of the shell 1, the bottom of the fan 53 is fixedly connected with an output shaft of the driving motor 51, the outer side wall of the fan 53 is fixedly connected with the inner side wall of the rotating shaft 54, and the outer side wall of the rotating shaft 54 is connected with the top of the shell 1 through a bearing;
through the setting of above-mentioned structure, realized the effective circulation to inside air to heating to the rainwater provides the basis.
Wherein, the cooling assembly 6 comprises a cooling pipe 61, a flow guide plate 62, a connecting pipe 63, a spray head 64 and a drain pipe 65; one end of the cooling pipe 61 penetrates through the side wall of the communicating pipe 9 and extends to the inner side wall of the communicating pipe 9, the inner side wall of the cooling pipe 61 is fixedly connected with one end of the drainage plate 62, the other end of the drainage plate 62 is fixedly connected with one end of the connecting pipe 63, the end part of the spray head 64 is fixedly connected with the other end of the connecting pipe 63, and the other end of the cooling pipe 61 penetrates through the side wall of the drain pipe 65 and extends to the inner side wall of the drain pipe 65;
through the arrangement of the structure, the effective cooling of the air outside the shell 1 is realized, certain heat inside the shell 1 can be absorbed, and the heat dissipation efficiency is further improved.
The guide assembly 7 comprises an air inlet pipe 71, a guide plate 72 and guide vanes 73; the air inlet pipe 71 is arranged at the bottom far away from the guide vane 73, and the end part of the guide plate 72 is connected with the end part of the guide vane 73 through a bearing;
through the arrangement of the structure, the effective diversion of air entering from the outside is realized, so that the outside air can be blown to the low-voltage transformer more, and the working efficiency of the low-voltage transformer is ensured.
Wherein, the conveying mechanism 8 comprises a conveying blade 81, a conveying pipe 82 and a one-way air outlet 83; the conveying blade 81 is arranged at the bottom far away from the conveying pipe 82, and the one-way air outlet 83 is arranged at the top of the conveying pipe 82;
through the arrangement of the structure, accelerated drainage of rainwater is realized, certain degree of heating of the rainwater is also realized, and further the evaporation speed of the rainwater after drainage is improved.
The end of the conveying pipe 82 penetrates through the side wall of the rotating shaft 54 and extends to the inner side wall of the rotating shaft 54, and the inner side wall of the conveying blade 81 is fixedly connected with the outer side wall of the rotating shaft 54.
Wherein, the intake pipe 71 is installed in the bottom of casing 1, and intake pipe 71 runs through the bottom of casing 1 and extends to the inside wall bottom of casing 1, and the bottom fixedly connected with dust screen 4 of intake pipe 71, the lateral wall of guide plate 72 and the inside wall fixed connection of casing 1.
The cooling pipe 61 is installed inside the sidewall of the casing 1, the cooling pipe 61 covers most of the area of the casing 1, and the connection pipe 63 penetrates the sidewall of the casing 1 and extends to the outside of the casing 1.
In the invention, when the rainwater collecting device is applied to an area with more rainfall, rainwater at the top of the structure is collected by the collecting hopper 2 after being filtered by the filter screen 3, the fan 53 is rotated by starting the driving motor 51 to drive the rotating shaft 54 to rotate, the rotation of the rotating shaft 54 drives the conveying blades 81 to rotate, so that water in the collecting hopper 2 is pumped into the cooling pipe 61 by the conveying blades 81 through the communicating pipe 9, the cooling pipe 61 is arranged in the shell 1 and wraps most of the area of the shell 1, the temperature in the shell 1 is cooled to a certain degree, and when the rainwater flows in the cooling pipe 61, a part of rainwater enters the spray head 64 through the connecting pipe 63 under the drainage effect of the drainage plate 62, and the spray head 64 atomizes and sprays the rainwater, so as to realize effective cooling of air outside the shell 1;
meanwhile, the rotation of the fan 53 filters the air around the housing 1 cooled by the cooling assembly 6 through the dust screen 4, and the air is sucked into the housing 1 through the air inlet pipe 71, and after the outside air enters the housing 1, the guide vanes 73 are blown to rotate, so that the outside air can be blown to the low-voltage transformer, and then the air absorbed by the low-voltage transformer enters the conveying pipe 82 through the rotating shaft 54 after being extracted by the fan 53, and the conveying pipe 82 rotates due to the rotation of the rotating shaft 54, and finally the air is uniformly discharged into the rainwater stored in the collecting hopper 2 through the one-way air outlet 83, so that the further heat dissipation of the low-voltage transformer is realized, and the rainwater is heated to a certain extent, so that the rainwater atomized by the spray head 64 can be rapidly evaporated;
in the whole process, it is to be noted that: because the temperature of the rainwater is lower, and the heat generated by the low-voltage transformer is radiated by both water cooling and air cooling, although the air absorbing the heat of the low-voltage transformer can enter the rainwater, when the rainwater is discharged through the cooling pipe 61, the temperature of the rainwater is still lower than the internal temperature of the shell 1, and the radiating efficiency of the cooling pipe 61 cannot be influenced;
the operation is simple, convenient and quick, the resource utilization maximization is achieved, the heat dissipation efficiency of the low-voltage transformer is high, the use is convenient, and the popularization is worth.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (8)

1. A low-voltage transformer cooling structure, comprising:
the transformer comprises a shell (1), wherein a low-voltage transformer is installed at the bottom of the inner side wall of the shell (1) through a base, a communicating pipe (9) is fixedly connected to the top of the shell (1), a collecting hopper (2) is fixedly connected to the top of the communicating pipe (9), and a filter screen (3) is fixedly connected to the inner side wall of the collecting hopper (2);
the driving device (5), the driving device (5) is installed on the top of the inner side wall of the shell (1), and the driving device (5) is used for providing driving force for the work of the whole structure;
a cooling assembly (6), wherein the cooling assembly (6) is used for cooling the external environment of the shell (1) and absorbing the internal temperature of the shell (1), and the cooling assembly (6) is installed on the shell (1);
the air guide assembly (7) is used for guiding outside air, and the air guide assembly (7) is installed inside the shell (1);
conveying mechanism (8), conveying mechanism (8) are used for carrying the rainwater to the casing (1) inside air carries, conveying mechanism (8) with drive arrangement's (5) output fixed connection.
2. A low-voltage transformer cooling structure according to claim 1, characterized in that said driving means (5) comprise a driving motor (51), a supporting frame (52), a fan (53) and a rotating shaft (54); the bottom of driving motor (51) with the top fixed connection of support frame (52), the top of support frame (52) with the inside wall top fixed connection of casing (1), the bottom of fan (53) with the output shaft fixed connection of driving motor (51), the lateral wall of fan (53) with the inside wall fixed connection of pivot (54), the lateral wall of pivot (54) with the top of casing (1) is connected through the bearing.
3. Low voltage transformer cooling according to claim 1, characterized in that the cooling assembly (6) comprises a cooling tube (61), a flow-guiding plate (62), a connecting tube (63), a spray head (64) and a drain (65); the one end of cooling tube (61) runs through the lateral wall of communicating pipe (9) and extends to the inside wall of communicating pipe (9), the inside wall of cooling tube (61) with the one end fixed connection of drainage plate (62), the other end of drainage plate (62) with the one end fixed connection of connecting pipe (63), the tip of shower nozzle (64) with the other end fixed connection of connecting pipe (63), the other end of cooling tube (61) runs through the lateral wall of drain pipe (65) and extends to the inside wall of drain pipe (65).
4. A low-voltage transformer cooling structure according to claim 1, characterized in that the flow guiding assembly (7) comprises an air inlet pipe (71), a flow guiding plate (72) and flow guiding vanes (73); the air inlet pipe (71) is installed at the bottom far away from the guide vanes (73), and the end parts of the guide plates (72) and the guide vanes (73) are connected through bearings.
5. A low-voltage transformer cooling structure according to claim 1, characterized in that said delivery means (8) comprise delivery blades (81), delivery pipes (82) and one-way air outlets (83); the conveying blade (81) is installed at the bottom far away from the conveying pipe (82), and the one-way air outlet (83) is formed in the top of the conveying pipe (82).
6. A low voltage transformer cooling structure according to claim 5, characterized in that the end of the transport pipe (82) extends through the side wall of the rotating shaft (54) and to the inner side wall of the rotating shaft (54), and the inner side wall of the transport blade (81) is fixedly connected with the outer side wall of the rotating shaft (54).
7. The cooling structure for the low-voltage transformer according to claim 4, wherein the air inlet pipe (71) is installed at the bottom of the casing (1), the air inlet pipe (71) penetrates through the bottom of the casing (1) and extends to the bottom of the inner side wall of the casing (1), the bottom of the air inlet pipe (71) is fixedly connected with the dust screen (4), and the outer side wall of the guide plate (72) is fixedly connected with the inner side wall of the casing (1).
8. A low-voltage transformer cooling structure according to claim 3, characterized in that said cooling pipe (61) is mounted inside the side wall of said casing (1), said connecting pipe (63) extending through the side wall of said casing (1) and to the outside of said casing (1).
CN202111063088.8A 2021-09-10 2021-09-10 Low-voltage transformer cooling structure Pending CN113990623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111063088.8A CN113990623A (en) 2021-09-10 2021-09-10 Low-voltage transformer cooling structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111063088.8A CN113990623A (en) 2021-09-10 2021-09-10 Low-voltage transformer cooling structure

Publications (1)

Publication Number Publication Date
CN113990623A true CN113990623A (en) 2022-01-28

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CN202111063088.8A Pending CN113990623A (en) 2021-09-10 2021-09-10 Low-voltage transformer cooling structure

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209249250U (en) * 2018-09-26 2019-08-13 天津市祥源安高中频电源变压器有限公司 A kind of heat dissipation type waterproof transformer
CN110676018A (en) * 2019-09-24 2020-01-10 珠海市新化磁性材料有限公司 Oil-immersed transformer based on cooling protection device
CN212182070U (en) * 2020-05-25 2020-12-18 丹阳市普天电气有限公司 Dry-type transformer protective housing
KR102225131B1 (en) * 2021-01-18 2021-03-09 주식회사 한얼엔지니어링 Refrigeration apparatus of high voltage transformer
CN113284711A (en) * 2021-06-09 2021-08-20 江苏龙创电气有限公司 Distribution transformer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209249250U (en) * 2018-09-26 2019-08-13 天津市祥源安高中频电源变压器有限公司 A kind of heat dissipation type waterproof transformer
CN110676018A (en) * 2019-09-24 2020-01-10 珠海市新化磁性材料有限公司 Oil-immersed transformer based on cooling protection device
CN212182070U (en) * 2020-05-25 2020-12-18 丹阳市普天电气有限公司 Dry-type transformer protective housing
KR102225131B1 (en) * 2021-01-18 2021-03-09 주식회사 한얼엔지니어링 Refrigeration apparatus of high voltage transformer
CN113284711A (en) * 2021-06-09 2021-08-20 江苏龙创电气有限公司 Distribution transformer

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