CN113628838A - Transformer protection component convenient to heat dissipation - Google Patents

Transformer protection component convenient to heat dissipation Download PDF

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Publication number
CN113628838A
CN113628838A CN202110916168.7A CN202110916168A CN113628838A CN 113628838 A CN113628838 A CN 113628838A CN 202110916168 A CN202110916168 A CN 202110916168A CN 113628838 A CN113628838 A CN 113628838A
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CN
China
Prior art keywords
heat dissipation
shell
transformer
water pump
transformer protection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110916168.7A
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Chinese (zh)
Inventor
董刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Qixing Electric Appliance Co ltd
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Hefei Qixing Electric Appliance Co ltd
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Publication date
Application filed by Hefei Qixing Electric Appliance Co ltd filed Critical Hefei Qixing Electric Appliance Co ltd
Priority to CN202110916168.7A priority Critical patent/CN113628838A/en
Publication of CN113628838A publication Critical patent/CN113628838A/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
    • H01F27/02Casings
    • H01F27/025Constructional details relating to cooling
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/06Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • 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
    • H01F27/10Liquid cooling

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

Abstract

The invention discloses a transformer protection assembly convenient for heat dissipation, and belongs to the field of transformer assemblies. The transformer box comprises a transformer box body, wherein the upper surface of the transformer box body is in threaded connection with an installation plate, a water pump is fixedly installed on the upper surface of the installation plate, a cooling water tank is fixedly installed on the right side surface of the water pump, a cooling fan is fixedly installed on the upper surface of the cooling water tank, the left side surface of the water pump is communicated with a plurality of connecting pipes, one ends of the connecting pipes, far away from the water pump, are communicated with a heat dissipation shell, the lower surface of the heat dissipation shell is in threaded connection with a base, and a core heat conduction shell is clamped on the upper surface of the base. According to the invention, the water pump, the cooling water tank and the heat dissipation shell are arranged, so that the device can be filled with cooling liquid to enter the heat dissipation shell, low-temperature cooling liquid is filled through one connecting pipe, and high-temperature cooling liquid is pumped back through the other connecting pipe, the temperature in the heat dissipation shell is effectively reduced, and the heat in the transformer can be quickly conducted to the inner shell of the heat dissipation shell through the arrangement of the core heat conduction shell, so that the heat dissipation effect is good.

Description

Transformer protection component convenient to heat dissipation
Technical Field
The invention belongs to the field of transformer assemblies, and particularly relates to a transformer protection assembly convenient for heat dissipation.
Background
The power transformer (transformer for short) is an electric equipment for changing AC voltage, it can change AC voltage of a certain grade into AC voltage of another grade according to the principle of electromagnetic induction, so that it can meet the requirements of different loads, so that it can be used in power system and power supply system, and the voltage outputted by power generator is limited by insulation level of power generator, generally 6.3KV and 10.5KV, and its maximum is not more than 20KV, so that it is difficult to use such low voltage to make long-distance transmission, and because when the power energy of a certain power is transmitted, the lower voltage is higher, the more current is higher, and most of the power energy can be consumed on the resistance of power transmission line, so that it only can use booster transformer to raise the terminal voltage of power generator to several tens of thousands of volts, so as to reduce transmission current, reduce energy loss on the power transmission line, and can not increase the cross-section of wire to make long-distance transmission of power energy, after the power transmission line transmits the electric energy with high voltage of tens of thousands of volts or hundreds of thousands of volts to the load area, the high voltage must be reduced to the low voltage suitable for the electric equipment through the step-down transformer, therefore, in the power supply and utilization system, the step-down transformer is needed to convert the high voltage transmitted by the power transmission line into various voltages with different grades so as to meet various complex requirements.
When the transformer runs, the coil and the iron core of the transformer generate copper loss and iron loss, the losses are changed into heat energy, the temperature of the iron core and the coil of the transformer rises, if the temperature exceeds an allowable value for a long time, insulation gradually loses mechanical elasticity to cause insulation aging, the temperature of each part of the transformer during running is different, the temperature of the coil is the highest, the temperature of the iron core is the second, the temperature of insulating oil is lower than the temperature of the coil and the iron core, the upper oil temperature of the transformer is higher than the lower oil temperature, the allowable temperature during running of the transformer is checked according to the upper oil temperature, when the ambient air temperature is the highest 400 ℃ during normal running of the A-class insulation transformer, the limit working temperature of a transformer winding is 1050 ℃, because the temperature of the winding is 100 ℃ higher than the oil temperature, the upper oil temperature of the transformer is regulated to be not more than 950 ℃ for preventing oil quality degradation, and under normal conditions, in order to prevent the over-speed oxidation of the insulating oil, the upper oil temperature should not exceed 850C, for a transformer adopting forced oil circulating water cooling and air cooling, the upper oil temperature should not often exceed 750C, most of the existing transformer protection components are directly protected, an additional heat dissipation component is adopted for heat dissipation, the occupied space is large, and the heat dissipation effect is not good
Disclosure of Invention
The invention aims to provide a transformer protection component convenient for heat dissipation, and solves the problem that the heat dissipation effect of the protection component in the prior art is not good enough.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a transformer protection component convenient for heat dissipation, which comprises a transformer box body, wherein the upper surface of the transformer box body is provided with a plurality of heat dissipation ports for dissipating internal heat, the upper surface of the transformer box body is in threaded connection with a mounting plate for facilitating the installation and the disassembly of a water pump, the upper surface of the mounting plate is fixedly provided with the water pump for water circulation through the water pump, the right side surface of the water pump is fixedly provided with a cooling water tank, the upper surface of the cooling water tank is fixedly provided with a cooling fan for dissipating heat of cooling liquid in the cooling water tank, the left side surface of the water pump is communicated with a plurality of connecting pipes, one end of each connecting pipe, which is far away from the water pump, is communicated with a heat dissipation shell, water flow is sent into the heat dissipation shell through the water pump, the lower surface of the heat dissipation shell is in threaded connection with a base, the upper surface of the base is clamped with a core heat conduction shell, and the lower surface of the core heat conduction shell is fixedly connected with a hexagonal lug, the device is convenient to mount and dismount and is more convenient to use.
Preferably, seal groove and hexagonal recess have been seted up respectively to the base upper surface, prevent that the coolant liquid from spilling.
Preferably, the heat dissipation casing includes shell, inner shell, backup pad, through-hole, cavity and sealed lug, a plurality of backup pads of disc fixedly connected with in the shell, a backup pad fixed surface is connected with the inner shell, a plurality of through-holes have been seted up on a backup pad surface, fixed surface is connected with sealed lug under the shell, sealed lug lower surface and seal groove screw-thread fit, this device of sealing that can be convenient.
Preferably, the upper surface of the sealing lug is fixedly connected with an outer shell, an inner shell and a supporting plate respectively, and the stability of direct connection between the outer shell and the inner shell is improved through the supporting plate.
Preferably, a cavity is formed between the outer shell and the inner shell, and the cooling liquid is poured into the cavity.
Preferably, two opposite surfaces of the supporting plate are fixedly connected with the outer shell and the inner shell respectively.
Preferably, the two support plates are symmetrically arranged relative to the core heat conducting shell, and a plurality of through holes are formed in one surface of each support plate, so that cooling liquid can pass through the support plates, and the circulation of the cooling liquid is improved.
Preferably, a hexagonal bump is fixedly connected to the lower surface of the core heat conducting shell.
Preferably, hexagonal lug size and hexagonal recess size phase-match and joint cooperation make core heat conduction shell can be convenient be connected fixedly with the base.
Preferably, the connecting pipe comprises a water inlet pipe and a water return pipe, and the water inlet pipe and the water return pipe are the same in size, so that the cooling liquid temperature can be kept by the device.
The invention has the following beneficial effects:
1. when the cooling device is used, the water pump, the cooling water tank and the heat dissipation shell are arranged, so that cooling liquid can be filled into the heat dissipation shell, low-temperature cooling liquid is filled through one connecting pipe, high-temperature cooling liquid is pumped back through the other connecting pipe, the temperature in the heat dissipation shell is effectively reduced, heat in the transformer can be quickly conducted to the inner shell of the heat dissipation shell through the core heat conduction shell, the heat in the transformer can be sent into the water tank through the cooling liquid, the water tank radiates the heat into air through the heat dissipation fan, and the heat dissipation effect is good.
2. When the transformer box is used, the water pump and the cooling water tank can be conveniently arranged on the surface of the transformer box body by arranging the mounting plate, the heat dissipation shell can be conveniently arranged on the base by arranging the sealing groove on the base and arranging the sealing convex block on the lower surface of the heat dissipation shell, and the core heat conduction shell can be conveniently arranged on the base by arranging the hexagonal convex block on the lower surface of the core heat conduction shell and arranging the hexagonal groove on the base, so that the device is simpler and more convenient to install and disassemble, and the existing transformer station is more convenient to modify.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a transformer protection assembly facilitating heat dissipation according to the present invention;
FIG. 2 is a schematic view of a transformer protection assembly with heat dissipation capability according to the present invention;
FIG. 3 is a top view of a transformer guard assembly of the present invention to facilitate heat dissipation;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
fig. 5 is a front view of a transformer guard assembly of the present invention to facilitate heat dissipation.
In the drawings, the components represented by the respective reference numerals are listed below: 1. a transformer tank body; 2. a heat dissipation port; 3. mounting a plate; 4. a water pump; 5. a cooling water tank; 6. a heat radiation fan; 7. a connecting pipe; 8. a heat dissipating housing; 9. a core thermally conductive shell; 10. a hexagonal bump; 11. a base; 12. a sealing groove; 13. a hexagonal groove; 801. a housing; 802. an inner shell; 803. a support plate; 804. a through hole; 805. a cavity; 806. and sealing the bump.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1-5, the invention is a transformer protection assembly convenient for heat dissipation, comprising a transformer tank 1, a plurality of heat dissipation ports 2 are arranged on the upper surface of the transformer tank 1 for dissipating internal heat, a mounting plate 3 is connected to the upper surface of the transformer tank 1 by screw threads for facilitating the mounting and dismounting of a water pump 4, the upper surface of the mounting plate 3 is fixedly provided with the water pump 4, water circulation is performed by the water pump 4, the right side surface of the water pump 4 is fixedly provided with a cooling water tank 5, the upper surface of the cooling water tank 5 is fixedly provided with a heat dissipation fan 6 for dissipating heat of cooling liquid in the cooling water tank 5, the left side surface of the water pump 4 is communicated with a plurality of connecting pipes 7, one end of the connecting pipe 7 far away from the water pump 4 is communicated with a heat dissipation shell 8, water flow is sent into the heat dissipation shell 8 by the water pump 4, the lower surface of the heat dissipation shell 8 is connected with a base 11 by screw threads, the upper surface of the base 11 is clamped with a core heat conduction shell 9, the hexagonal lug 10 is fixedly connected to the lower surface of the core heat conducting shell 9, the device is convenient to mount and dismount, and the use is more convenient.
Furthermore, the upper surface of the base 11 is respectively provided with a sealing groove 12 and a hexagonal groove 13 to prevent the cooling liquid from leaking.
Further, the heat dissipation casing 8 includes an outer shell 801, an inner shell 802, a support plate 803, a through hole 804, a cavity 805 and a sealing bump 806, the inner circular surface of the outer shell 801 is fixedly connected with the support plate 803, a surface of the support plate 803 is fixedly connected with the inner shell 802, a surface of the support plate 803 is provided with the through hole 804, the lower surface of the outer shell 801 is fixedly connected with the sealing bump 806, the lower surface of the sealing bump 806 is in threaded fit with the sealing groove 12, and the device can be conveniently sealed.
Further, the upper surfaces of the sealing protrusions 806 are fixedly connected with the outer shell 801, the inner shell 802 and the supporting plate 803, respectively, so that the stability of the direct connection between the outer shell 801 and the inner shell 802 is increased by the supporting plate 803.
Further, a cavity 805 is formed between the outer shell 801 and the inner shell 802, and cooling liquid is filled in the cavity 805.
Further, two opposite surfaces of the supporting plate 803 are fixedly connected with the outer shell 801 and the inner shell 802, respectively.
Furthermore, two supporting plates 803 are symmetrically arranged about the core heat conducting shell 9, and a plurality of through holes 804 are formed in one surface of each supporting plate 803, so that cooling liquid can pass through the supporting plates 803, and the circulation of the cooling liquid is increased.
Further, a hexagonal bump 10 is fixedly connected to the lower surface of the core heat conducting shell 9.
Further, the size of the hexagonal bump 10 is matched with that of the hexagonal groove 13 in size and is in clamping fit, so that the core heat conducting shell 9 can be conveniently and fixedly connected with the base 11.
Further, the connection pipe 7 includes a water inlet pipe and a water return pipe, which have the same size, so that the apparatus can maintain the temperature of the cooling liquid.
One specific application of this embodiment is: when the transformer box is used, the base 11 is firstly installed on the lower surface of the transformer box 1, then the core heat-conducting shell 9 is installed in the hexagonal groove 13 of the base 11 through the hexagonal bump 10, then the heat-radiating shell 8 is sleeved outside the core heat-conducting shell 9, the sealing bump 806 on the lower surface of the heat-radiating shell 8 is screwed into the sealing groove 12 of the base 11, so that the heat-radiating shell 8 is tightly connected with the base 11, each connecting pipe 7 is communicated with the heat-radiating shell 8, the mounting plate 3 is installed on the upper surface of the transformer box 1, and then the water pump 4 and the cooling water tank 5 are respectively installed on the upper surface of the mounting plate 3, so that each connecting pipe 7 is connected with the water pump 4 to complete installation.
When the cooling water tank is started, the water pump 4 fills the cavity 805 of the heat dissipation shell 8 with the cooling liquid, the core heat conduction shell 9 conducts the heat dissipated by the core to the inner shell 802 of the heat dissipation shell 8, the cooling liquid absorbs the heat of the inner shell 802, the water pump 4 pumps the high-temperature cooling liquid back to the cooling water tank 5, the cooling fan 6 on the upper surface of the cooling water tank 5 cools the cooling liquid, and then the water pump 4 injects the low-temperature cooling liquid back to the heat dissipation shell 8 for circulation.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. The utility model provides a transformer protection component convenient to heat dissipation, includes transformer box (1), its characterized in that:
a plurality of thermovents (2) have been seted up to transformer box (1) upper surface, transformer box (1) upper surface threaded connection has mounting panel (3), fixed surface installs water pump (4) on mounting panel (3), fixed surface installs cooling water tank (5) in water pump (4) right flank fixed mounting, fixed surface installs radiator fan (6) on cooling water tank (5), water pump (4) left surface intercommunication has a plurality of connecting pipes (7), the one end intercommunication that water pump (4) were kept away from in connecting pipe (7) has radiating shell (8), threaded connection has base (11) under radiating shell (8), base (11) upper surface joint has core heat conduction shell (9), fixed surface is connected with hexagonal lug (10) under core heat conduction shell (9).
2. The transformer protection assembly convenient for heat dissipation according to claim 1, wherein the upper surface of the base (11) is respectively provided with a sealing groove (12) and a hexagonal groove (13).
3. The transformer protection assembly convenient for heat dissipation according to claim 2, wherein the heat dissipation casing (8) comprises an outer casing (801), an inner casing (802), support plates (803), through holes (804), a cavity (805) and sealing bumps (806), the inner circular surface of the outer casing (801) is fixedly connected with the support plates (803), one surface of each support plate (803) is fixedly connected with the inner casing (802), one surface of each support plate (803) is provided with the through holes (804), the lower surface of the outer casing (801) is fixedly connected with the sealing bumps (806), and the lower surface of each sealing bump (806) is in threaded fit with the sealing groove (12).
4. The transformer protection assembly for facilitating heat dissipation according to claim 3, wherein the outer shell (801), the inner shell (802) and the support plate (803) are fixedly connected to the upper surface of the sealing protrusion (806), respectively.
5. The transformer protection assembly facilitating heat dissipation according to claim 4, wherein a cavity (805) is formed between the outer shell (801) and the inner shell (802).
6. The transformer protection assembly for facilitating heat dissipation according to claim 5, wherein two opposite surfaces of the supporting plate (803) are fixedly connected with the outer shell (801) and the inner shell (802), respectively.
7. The transformer protection assembly convenient for heat dissipation according to claim 6, wherein the two support plates (803) are symmetrically arranged about the core heat conducting shell (9), and a plurality of through holes (804) are formed on one surface of each support plate (803).
8. The transformer protection assembly facilitating heat dissipation according to claim 6, wherein a hexagonal bump (10) is fixedly connected to a lower surface of the core heat conducting shell (9).
9. The transformer protection assembly convenient for heat dissipation according to claim 6, wherein the hexagonal protrusion (10) is matched with the hexagonal groove (13) in size and is in snap fit.
10. The transformer guard assembly for facilitating heat dissipation according to claim 6, wherein the connection pipe (7) comprises a water inlet pipe and a water return pipe, and the water inlet pipe and the water return pipe are the same size.
CN202110916168.7A 2021-08-11 2021-08-11 Transformer protection component convenient to heat dissipation Pending CN113628838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110916168.7A CN113628838A (en) 2021-08-11 2021-08-11 Transformer protection component convenient to heat dissipation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110916168.7A CN113628838A (en) 2021-08-11 2021-08-11 Transformer protection component convenient to heat dissipation

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CN113628838A true CN113628838A (en) 2021-11-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116798743A (en) * 2023-08-11 2023-09-22 南通米兰特电气有限公司 Elevator control transformer with good protection performance and use method thereof
CN117275880A (en) * 2023-11-01 2023-12-22 河北万博电器有限公司 High-efficiency energy-saving amorphous alloy three-dimensional coiled iron core fully-sealed transformer

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JP2000306738A (en) * 1999-04-20 2000-11-02 Toshiba Corp Electrical equipment for electric power
CN107123516A (en) * 2017-05-16 2017-09-01 天晟电气股份有限公司 A kind of oil-filled transformer auxiliary radiating device
CN107887114A (en) * 2017-12-26 2018-04-06 浙江叶尼塞电气有限公司 A kind of low-tension transformer of good heat dissipation effect
CN208460527U (en) * 2018-08-06 2019-02-01 四川德华电气有限责任公司 A kind of power transformer that radiating efficiency is high
CN209822440U (en) * 2019-07-26 2019-12-20 保定市安特变压器厂 Oil-immersed grounding transformer
CN210692269U (en) * 2019-10-24 2020-06-05 句容市四环电气有限公司 Stainless steel shell with efficient heat dissipation protection function
CN211125253U (en) * 2020-01-20 2020-07-28 四川众信通用电力有限公司 Heat dissipation shell for transformer
CN211654482U (en) * 2020-03-30 2020-10-09 深圳市勤信隆电子有限公司 Water-cooled dustproof transformer
CN111986890A (en) * 2020-08-18 2020-11-24 马鞍山聚力科技有限公司 Transformer based on non-Newtonian fluid cooling
CN213242179U (en) * 2020-10-27 2021-05-18 天津市赋跃达科技有限公司 Transformer heat abstractor
CN112837899A (en) * 2021-01-06 2021-05-25 程承熙 Transformer temperature measurement and cooling integration equipment

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000306738A (en) * 1999-04-20 2000-11-02 Toshiba Corp Electrical equipment for electric power
CN107123516A (en) * 2017-05-16 2017-09-01 天晟电气股份有限公司 A kind of oil-filled transformer auxiliary radiating device
CN107887114A (en) * 2017-12-26 2018-04-06 浙江叶尼塞电气有限公司 A kind of low-tension transformer of good heat dissipation effect
CN208460527U (en) * 2018-08-06 2019-02-01 四川德华电气有限责任公司 A kind of power transformer that radiating efficiency is high
CN209822440U (en) * 2019-07-26 2019-12-20 保定市安特变压器厂 Oil-immersed grounding transformer
CN210692269U (en) * 2019-10-24 2020-06-05 句容市四环电气有限公司 Stainless steel shell with efficient heat dissipation protection function
CN211125253U (en) * 2020-01-20 2020-07-28 四川众信通用电力有限公司 Heat dissipation shell for transformer
CN211654482U (en) * 2020-03-30 2020-10-09 深圳市勤信隆电子有限公司 Water-cooled dustproof transformer
CN111986890A (en) * 2020-08-18 2020-11-24 马鞍山聚力科技有限公司 Transformer based on non-Newtonian fluid cooling
CN213242179U (en) * 2020-10-27 2021-05-18 天津市赋跃达科技有限公司 Transformer heat abstractor
CN112837899A (en) * 2021-01-06 2021-05-25 程承熙 Transformer temperature measurement and cooling integration equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116798743A (en) * 2023-08-11 2023-09-22 南通米兰特电气有限公司 Elevator control transformer with good protection performance and use method thereof
CN116798743B (en) * 2023-08-11 2024-03-01 南通米兰特电气有限公司 Elevator control transformer with good protection performance and use method thereof
CN117275880A (en) * 2023-11-01 2023-12-22 河北万博电器有限公司 High-efficiency energy-saving amorphous alloy three-dimensional coiled iron core fully-sealed transformer
CN117275880B (en) * 2023-11-01 2024-03-26 河北万博电器有限公司 High-efficiency energy-saving amorphous alloy three-dimensional coiled iron core fully-sealed transformer

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Application publication date: 20211109

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