CN113921228A - Mining safe dry-type transformer - Google Patents
Mining safe dry-type transformer Download PDFInfo
- Publication number
- CN113921228A CN113921228A CN202111295335.7A CN202111295335A CN113921228A CN 113921228 A CN113921228 A CN 113921228A CN 202111295335 A CN202111295335 A CN 202111295335A CN 113921228 A CN113921228 A CN 113921228A
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- transformer
- heat
- transformer body
- dry
- type transformer
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- 238000005065 mining Methods 0.000 title claims description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 230000001737 promoting effect Effects 0.000 claims abstract description 4
- 239000013013 elastic material Substances 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 230000003139 buffering effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 239000004575 stone Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a mine safe dry-type transformer, which relates to the technical field of transformers and comprises a bottom plate, wherein the bottom plate is provided with: the transformer comprises a transformer body, wherein a heat conduction oil pipe for cooling the interior of the transformer body is arranged on the transformer body; the protection assembly comprises an installation frame and a plurality of protection plates arranged in the installation frame in a sliding mode, and the protection plates are provided with a reversing mechanism and a driving mechanism used for promoting a heat-conducting medium in the heat-conducting oil pipe to flow circularly; the buffer oil bag is communicated with the heat conduction oil pipe to form a complete fluid loop, and the buffer oil bag is made of elastic materials. The protection plate is used for protecting the transformer body from splashing ores, when the protection plate is reset, the protection plate is reversed under the matching of the gear and the rack, when the protection plate is impacted again, the protection plate is impacted by the opposite surface, deformation generated by previous impact is offset, and the durability of the protection plate is improved.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a mine safe dry-type transformer.
Background
Dry transformers are widely used in local lighting, high-rise buildings, airports, wharf CNC machines and the like, and simply referred to as dry transformers are transformers in which the core and the winding are not immersed in insulating oil. Dry-type transformers are divided into three types, open type, closed type and pouring type, and in a mine filled with dangerous gas, a closed-type transformer is generally used, namely, a transformer body is located in a closed shell and is not in direct contact with the atmosphere, so that the risk of explosion caused by arc sparks is reduced.
Among the prior art, a transformer for in the mine generally all is direct mount in the ore deposit way, for the mine provides electric power, but the ore deposit way internal environment is complicated, the mining car loads the ore and bumps the transformer through the stone that does not exempt from to shake the departure, the protective housing that can lead to the transformer like this breaks, reduce the life of transformer, transformer electric arc leaks when serious and causes danger, can set up the rail in the part mine and protect the transformer, but because rail protective strength is low, the durability is poor, just can deform after striking several times and damage, need maintain the guardrail and change, otherwise just can not play the guard action, the security is poor, it is very inconvenient.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, a protective shell of a transformer is broken and the guard rail has poor durability and safety due to the fact that a transformer is impacted by mine stones, and provides a mining safety dry-type transformer.
In order to achieve the purpose, the invention adopts the following technical scheme:
the mine safe dry-type transformer comprises a bottom plate, wherein the bottom plate is provided with:
the transformer comprises a transformer body, wherein a heat conduction oil pipe for cooling the interior of the transformer body is arranged on the transformer body;
the protection assembly comprises an installation frame and a plurality of protection plates arranged in the installation frame in a sliding mode, and the protection plates are provided with a reversing mechanism and a driving mechanism used for promoting a heat-conducting medium in the heat-conducting oil pipe to flow circularly;
the buffer oil bag is communicated with the heat conduction oil pipe to form a complete fluid loop, and the buffer oil bag is made of elastic materials.
Preferably, the transformer body is arranged in a shell-closed manner, and a plurality of radiating fins are arranged outside the transformer body.
Preferably, the heat conduction oil pipes are divided into two groups, and the heat conduction oil pipes partially penetrate through the interior of the transformer body.
Preferably, the slide that a plurality of equidistance set up is seted up to the installing frame inside wall, it is provided with the smooth frame that is used for supporting the backplate to slide in the slide.
Preferably, the reversing mechanism comprises a shaft body fixedly arranged at two ends of the guard plate and rotatably connected with the sliding frame, a one-way bearing is fixedly arranged on the outer side wall of the shaft body, a gear is arranged on the outer peripheral surface of the one-way bearing, a rack meshed with the gear is arranged on the inner side wall of the sliding way, and the gear is rotated by 180 degrees when rolling along the rack.
Preferably, the outer side wall of the shaft body is provided with a damping so that the shaft body and the sliding frame keep the original state under the action of non-external force.
Preferably, the driving mechanism comprises a sleeve which is arranged on the heat conduction oil pipe and communicated with the inside of the heat conduction oil pipe, and a push rod which is in sealed sliding sleeve joint with the sleeve is fixedly arranged on the outer side wall of the sliding frame.
Preferably, the number of the sleeves is multiple, and the multiple sleeves are distributed in a linear array along the height direction of the heat-conducting oil pipe.
Preferably, the two groups of heat conduction oil pipes are respectively provided with a one-way valve, so that the heat conduction medium in the heat conduction oil pipes can only flow in one direction.
Preferably, the buffering oil pocket can also be the oil tank, the slide opening has been seted up on the oil tank, the slide opening internal seal slides and is provided with the traveller, be provided with buffer spring between the bottom in traveller and the oil tank, the fixed ratch that is provided with in traveller top, transformer body is close to oil tank one side and rotates and be provided with the pivot, the pivot outer peripheral face is provided with the blowing fan leaf that a plurality of equidistance set up, just pivot end fixing is provided with the drive gear with ratch engaged with.
Compared with the prior art, the invention has the following advantages:
1. the invention arranges the mounting frame, the guard plate and the reversing mechanism, the mounting frame is arranged at one side of the transformer body close to the mine tunnel, when splashed stones impact the transformer body, the guard plate blocks the stones, under the matching of the push rod and the sleeve, the oil pressure in the heat conducting oil pipe is raised, so that the buffering oil bag is expanded, the impact force applied to the guard plate is counteracted, after the stones fall, the push rod is reset to drive the guard plate to return to the initial position, and due to the one-way bearing arranged outside the guard plate shaft body, when the guard plate is reset, the guard plate is reversed under the matching of the gear and the rack, when the guard plate is impacted again, the guard plate is impacted by the opposite surface, the deformation generated by the last impact is counteracted, the durability of the guard plate is improved, and the problems of poor protection durability and safety of the guard bar in the prior art are solved.
2. According to the invention, the heat conducting oil pipe, the buffer oil bag, the push rod and the sleeve are arranged, after the stone impacts the guard plate, the push rod is moved to promote the heat conducting medium in the heat conducting oil pipe to flow, the fluidity of the heat conducting medium is improved, the heat conducting medium can guide out the heat in the transformer body, the heat dissipation effect of the transformer body is improved, and the risk of damage and explosion of the transformer due to high temperature is reduced.
Drawings
Fig. 1 is a schematic perspective view of a mining safety dry-type transformer according to the first embodiment of the present invention;
fig. 2 is a schematic perspective view of a second embodiment of the safety dry-type transformer for mining according to the present invention;
FIG. 3 is a schematic structural diagram of a connection relationship between a transformer body and a heat conduction oil pipe in the mining safety dry-type transformer provided by the invention;
fig. 4 is a schematic structural diagram of an installation frame in a mine safe dry-type transformer according to the present invention;
fig. 5 is a schematic structural diagram of a connection relationship between a mounting frame and a guard plate in the mine safe dry-type transformer according to the present invention;
FIG. 6 is an enlarged view taken at A in FIG. 5;
fig. 7 is a schematic structural diagram of a connection relationship between a guard plate and a push rod in the mining safety dry-type transformer according to the present invention;
fig. 8 is a schematic structural diagram of a connection relationship between an oil tank, a sliding column and a gear rod in the mining safety dry-type transformer.
In the figure: 1. a base plate; 2. a transformer body; 3. a guard assembly; 4. a buffer oil pocket; 5. a heat conducting oil pipe; 6. installing a frame; 7. a guard plate; 8. a heat dissipating fin; 9. a slideway; 10. a sliding frame; 11. a one-way bearing; 12. a rack; 13. a sleeve; 14. a push rod; 15. a one-way valve; 16. an oil tank; 17. a traveler; 18. a rack bar; 19. a rotating shaft; 20. a blower blade; 21. the gears are driven.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example one
Referring to fig. 1-3, a mining safe dry-type transformer includes a bottom plate 1, and the bottom plate 1 is provided with:
the transformer body 2 is equipped with on the transformer body 2 and is used for carrying out the inside heat conduction oil pipe 5 that cools down to the transformer body 2, and heat conduction oil pipe 5 is inside to be full of heat-conducting medium, leads out the inside heat of transformer body 2 through heat-conducting medium flow, is favorable to the heat dissipation of transformer body 2, improves the result of use of transformer body 2.
Referring to fig. 1-3, transformer body 2 is the closed setting of shell, and closed transformer body 2 is more suitable for mining, and closed transformer body 2 can avoid easily firing explosive gas and carry out transformer body 2 inside, has reduced the risk that easily fires explosive gas and lead to the explosion of transformer body 2 inside electric arc ignition, has explosion-proof advantage, and is equipped with a plurality of radiating fin 8 outside transformer body 2, further improves transformer body 2's radiating effect.
Referring to fig. 1-3, the heat conduction oil pipes 5 are divided into two groups, and the heat conduction oil pipes 5 partially penetrate through the interior of the transformer body 2, so as to respectively cool the insulation windings inside the transformer body 2, thereby improving the cooling efficiency.
Referring to fig. 4-6, the inner side wall of the mounting frame 6 is provided with a plurality of equally spaced slideways 9, a sliding frame 10 for supporting the guard plate 7 is slidably disposed in the slideways 9, and the sliding frame 10 is rectangular and used for driving the guard plate 7 to slide in the direction of impact on the mounting frame 6.
Referring to fig. 4-6, the distance between two adjacent guard plates 7 is greater than the height of the guard plates 7, so that the guard plates 7 can rotate freely around the shaft, and after the guard plates 7 are impacted, the guard plates are turned over by the reversing mechanism, and the impact is resisted by different surfaces, so that the effect of improving the durability of the guard plates 7 is achieved, and the safety of the transformer body 2 is improved.
Referring to fig. 5-7, the reversing mechanism includes a shaft body fixedly disposed at two ends of the guard plate 7 and rotatably connected to the sliding frame 10, when the ore strikes the guard plate 7, the guard plate 7 is forced to drive the sliding frame 10 to move along the sliding way 9, the outer side wall of the shaft body is fixedly provided with a one-way bearing 11, the outer peripheral surface of the one-way bearing 11 is provided with a gear, the inner side wall of the sliding way 9 is provided with a rack 12 meshed with the gear, when the gear contacts with the rack 12, the rotation of the one-way bearing 11 is reversed, when the sliding frame 10 is reset, the gear rolls along the rack 12, at this time, the one-way bearing 11 is forced to rotate, the shaft body rotates 180 degrees at this time, the guard plate 7 is driven to turn over the impact surface, so as to receive the next impact with the opposite surface, and achieve the purpose of offsetting the type change generated by the impact.
The outer side wall of the shaft body is provided with damping, so that the shaft body and the sliding frame 10 keep an original state under the action of non-external force, and the position deviation of the protection plate 7 caused by the rotation of the protection plate 7 is effectively reduced.
Referring to fig. 1-3, the driving mechanism includes a sleeve 13 disposed on the heat conducting oil pipe 5 and communicated with the inside of the heat conducting oil pipe 5, a push rod 14 hermetically and slidably sleeved with the sleeve 13 is fixedly disposed on the outer side wall of the sliding frame 10, and when the guard plate 7 is impacted to move, the push rod 14 is driven to move, so that the oil pressure inside the heat conducting oil pipe 5 is increased, and the heat conducting medium inside the heat conducting oil pipe 5 is pushed to flow, so that the cooling effect of the heat conducting medium is better.
Referring to fig. 2, the number of the sleeves 13 is multiple, the sleeves 13 are arranged corresponding to the protection plate 7, the protection range is improved, and the plurality of sleeves 13 are distributed in a linear array along the height direction of the heat conduction oil pipe 5.
Buffering oil bag 4, buffering oil bag 4 is linked together with heat conduction oil pipe 5 and forms complete fluid circuit, and buffering oil bag 4 is the elasticity material, and when push rod 14 removed and makes the inside oil pressure increase of heat conduction oil pipe 5, buffering oil bag 4 bloated, plays the effect of absorbing 7 impact forces of backplate, and after the ore kinetic energy that drops, buffering oil bag 4 restores to the throne, promotes push rod 14 and resets, makes backplate 7 get back to the initial position.
Referring to fig. 2, the two sets of heat conduction oil pipes 5 are respectively provided with the check valve 15, so that the heat conduction medium in the heat conduction oil pipes 5 can only flow in a single direction, and the heat conduction medium flows in a single direction in the process of expanding and reducing the buffer oil bag 4, thereby improving the fluidity of the heat conduction medium, facilitating the cooling of the transformer body 2 and improving the safety of the transformer body 2.
Example two
Referring to fig. 8, the buffering oil bag 4 may also be an oil tank 16, the oil tank 16 is provided with a slide hole, a slide column 17 is hermetically and slidably disposed in the slide hole, when the push rod 14 moves to increase the internal pressure of the heat conducting oil pipe 5, the slide column 17 moves upward under the action of pressure, a buffering spring is disposed between the slide column 17 and the inner bottom of the oil tank 16, the buffering spring can buffer the impact force of the ore and facilitate the return of the slide column 17, a rack bar 18 is fixedly disposed at the top of the slide column 17, the rack bar 18 moves upward when the slide column 17 moves upward, a rotating shaft 19 is rotatably disposed at one side of the transformer body 2 close to the oil tank 16, a plurality of blowing blades 20 disposed at equal intervals are disposed on the outer circumferential surface of the rotating shaft 19, a driving gear 21 engaged with the rack bar 18 is fixedly disposed at the end of the rotating shaft 19, the driving gear 21 is rotated when the rack bar 18 moves upward to rotate the rotating shaft 9, the rotating shaft 19 rotates the blowing blades 20 to generate air flow, blow to the transformer body 2, further improve the effect of cooling.
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 (10)
1. The mine safe dry-type transformer comprises a bottom plate (1), and is characterized in that the bottom plate (1) is provided with:
the transformer comprises a transformer body (2), wherein a heat conduction oil pipe (5) used for cooling the interior of the transformer body (2) is arranged on the transformer body (2);
the protective assembly (3) comprises an installation frame (6) and a plurality of protective plates (7) which are arranged in the installation frame (6) in a sliding mode, and the protective plates (7) are provided with reversing mechanisms and driving mechanisms for promoting heat-conducting media in the heat-conducting oil pipes (5) to flow circularly;
the buffer oil bag (4) is communicated with the heat conduction oil pipe (5) to form a complete fluid loop, and the buffer oil bag (4) is made of elastic materials.
2. The mining safety dry transformer according to claim 1, characterized in that the transformer body (2) is of a case-enclosed type, and a plurality of heat dissipation fins (8) are arranged outside the transformer body (2).
3. The mining-safe dry-type transformer according to claim 1, characterized in that the heat conducting oil pipes (5) are divided into two groups, and the heat conducting oil pipes (5) partially penetrate through the interior of the transformer body (2).
4. The mining safety dry-type transformer of claim 1, characterized in that the inner side wall of the mounting frame (6) is provided with a plurality of equally spaced slideways (9), and a sliding frame (10) for supporting the guard plate (7) is slidably arranged in the slideways (9).
5. The mining safety dry-type transformer of claim 4, wherein the reversing mechanism comprises a shaft body fixedly arranged at two ends of the protective plate (7) and rotatably connected with the sliding frame (10), a one-way bearing (11) is fixedly arranged on the outer side wall of the shaft body, a gear is arranged on the outer peripheral surface of the one-way bearing (11), a rack (12) meshed with the gear is arranged on the inner side wall of the slideway (9), and when the gear rolls along the rack (12), the gear is rotated by 180 degrees.
6. The mining safety dry-type transformer of claim 5, wherein the outer side wall of the shaft body is provided with a damper, so that the shaft body and the sliding frame (10) can keep the original state under the action of no external force.
7. The mining safety dry-type transformer of claim 4, wherein the driving mechanism comprises a sleeve (13) which is arranged on the heat conducting oil pipe (5) and communicated with the interior of the heat conducting oil pipe (5), and a push rod (14) which is in sealed sliding sleeve connection with the sleeve (13) is fixedly arranged on the outer side wall of the sliding frame (10).
8. The mining safety dry-type transformer of claim 7, characterized in that the number of the sleeves (13) is multiple, and the multiple sleeves (13) are distributed in a linear array along the height direction of the heat conducting oil pipe (5).
9. The mining safety dry-type transformer of claim 1, wherein two groups of heat conducting oil pipes (5) are provided with one-way valves (15) so that the heat conducting medium in the heat conducting oil pipes (5) can only flow in one direction.
10. The mining safety dry-type transformer of claim 1, wherein the buffer oil bag (4) can be an oil tank (16), a slide hole is formed in the oil tank (16), a slide column (17) is arranged in the slide hole in a sealing and sliding manner, a buffer spring is arranged between the slide column (17) and the inner bottom of the oil tank (16), a rack bar (18) is fixedly arranged at the top of the slide column (17), a rotating shaft (19) is rotatably arranged on one side, close to the oil tank (16), of the transformer body (2), a plurality of blowing fan blades (20) are arranged on the outer circumferential surface of the rotating shaft (19) at equal intervals, and a driving gear (21) meshed with the rack bar (18) is fixedly arranged at the end of the rotating shaft (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111295335.7A CN113921228B (en) | 2021-11-03 | 2021-11-03 | Mining safe dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111295335.7A CN113921228B (en) | 2021-11-03 | 2021-11-03 | Mining safe dry-type transformer |
Publications (2)
| Publication Number | Publication Date |
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| CN113921228A true CN113921228A (en) | 2022-01-11 |
| CN113921228B CN113921228B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111295335.7A Active CN113921228B (en) | 2021-11-03 | 2021-11-03 | Mining safe dry-type transformer |
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| Country | Link |
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| CN (1) | CN113921228B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117198694A (en) * | 2023-10-10 | 2023-12-08 | 深圳市百恒电气有限公司 | An oil-immersed transformer with precise oil conduction |
| CN117558533A (en) * | 2024-01-11 | 2024-02-13 | 深圳市固特电源技术有限公司 | Transformer and heat abstractor thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH222038A (en) * | 1941-11-07 | 1942-06-30 | Hermes Patentverwertungs Gmbh | Winding cooled with insulating liquid for transformers and reactors. |
| CN107731456A (en) * | 2017-10-13 | 2018-02-23 | 盐城市宇能电气有限公司 | Mining explosion-proof transformer guard box |
| KR102015457B1 (en) * | 2019-07-22 | 2019-10-23 | 한국초고압 주식회사 | Power transformer simplifies respiratory structure |
| CN209607555U (en) * | 2019-01-28 | 2019-11-08 | 陈冲 | A New Traction Transformer for Mining Machinery |
| CN210467466U (en) * | 2019-09-25 | 2020-05-05 | 常州市光辉变压器制造有限公司 | Oil-immersed transformer |
| US20200393521A1 (en) * | 2017-03-10 | 2020-12-17 | Abb Power Grids Switzerland Ag | Smart grid distribution transformer |
-
2021
- 2021-11-03 CN CN202111295335.7A patent/CN113921228B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH222038A (en) * | 1941-11-07 | 1942-06-30 | Hermes Patentverwertungs Gmbh | Winding cooled with insulating liquid for transformers and reactors. |
| US20200393521A1 (en) * | 2017-03-10 | 2020-12-17 | Abb Power Grids Switzerland Ag | Smart grid distribution transformer |
| CN107731456A (en) * | 2017-10-13 | 2018-02-23 | 盐城市宇能电气有限公司 | Mining explosion-proof transformer guard box |
| CN209607555U (en) * | 2019-01-28 | 2019-11-08 | 陈冲 | A New Traction Transformer for Mining Machinery |
| KR102015457B1 (en) * | 2019-07-22 | 2019-10-23 | 한국초고압 주식회사 | Power transformer simplifies respiratory structure |
| CN210467466U (en) * | 2019-09-25 | 2020-05-05 | 常州市光辉变压器制造有限公司 | Oil-immersed transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117198694A (en) * | 2023-10-10 | 2023-12-08 | 深圳市百恒电气有限公司 | An oil-immersed transformer with precise oil conduction |
| CN117558533A (en) * | 2024-01-11 | 2024-02-13 | 深圳市固特电源技术有限公司 | Transformer and heat abstractor thereof |
| CN117558533B (en) * | 2024-01-11 | 2024-04-02 | 三科调压电源(深圳)有限公司 | Transformer and heat abstractor thereof |
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| Publication number | Publication date |
|---|---|
| CN113921228B (en) | 2023-09-12 |
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