CN112289554B - Transformer device with cooling function - Google Patents
Transformer device with cooling function Download PDFInfo
- Publication number
- CN112289554B CN112289554B CN202011136013.3A CN202011136013A CN112289554B CN 112289554 B CN112289554 B CN 112289554B CN 202011136013 A CN202011136013 A CN 202011136013A CN 112289554 B CN112289554 B CN 112289554B
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- water tank
- water
- shaft
- transformer body
- cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention relates to the technical field of transformers, and discloses a transformer device with a cooling function, which comprises a transformer body, wherein a water tank filled with cooling water is arranged below the transformer body, and the water tank is connected with the transformer body through a cooling mechanism; the cooling mechanism comprises a heat exchange tube which is spiral, the heat exchange tube is arranged inside the transformer body, two ends of the heat exchange tube are symmetrically communicated with a water inlet pipe and a water outlet pipe, one ends of the water inlet pipe and the water outlet pipe, which are far away from the heat exchange tube, penetrate through the transformer body and are communicated with the tank wall of the water tank, a semiconductor refrigerator is arranged on one side tank wall of the water tank, the hot end of the semiconductor refrigerator is arranged outside the water tank, and the cold end of the semiconductor refrigerator is arranged in cooling water in the water tank. This transformer device with cooling function can solve and adopts cooling mechanism to spout the mode of water smoke at present and cool down, and this mode is serious to the water waste phenomenon, and can't carry out abundant problem of cooling to the inside transformer body.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a transformer device with a cooling function. .
Background
The transformer utilizes the principle of electromagnetic induction to change the alternating voltage, and the device can send electromagnetic wave all around at the in-process of operation, and then can cause electromagnetic pollution around, and has just carried out simple magnetism isolating structure to the transformer body among the prior art to do not set up extra magnetism isolating mode and carry out magnetism isolating, and then can locally produce the magnetic leakage phenomenon, thereby cause electromagnetic pollution to surrounding environment.
The automatic magnetism isolating device with the cooling function of the transformer is disclosed by the search disclosure (bulletin) number CN107578899B, when the device is used, through the mutual synergistic effect of the protection mechanism, the guard plate mechanism, the safety mechanism and the cooling mechanism, the use safety of the device is ensured, the on-site online magnetism isolating can be realized, meanwhile, the occupied space is small, and the device can be self-protected in disaster weather, so that the damage to the device caused by strong convection weather is avoided; the cooling mechanism can avoid the influence of the hot summer magnetism isolating device on the heat dissipation of the transformer, and ensure the safe operation of the transformer; the scheme still has the following technical defects:
this technical scheme adopts cooling mechanism to spout the mode of water smoke and cools down, and this mode is serious to the water waste phenomenon, and can't carry out abundant cooling to the inside transformer body. .
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a transformer device with a cooling function, which has the advantages of no waste of water resources and good cooling effect inside a transformer body, and solves the problems that the prior cooling mechanism is adopted to spray water mist for cooling, the phenomenon of water resource waste is serious, and the inside of the transformer body cannot be sufficiently cooled.
In order to achieve the purposes of avoiding waste of water resources and having good cooling effect in the transformer body, the invention provides the following technical scheme: the transformer device with the cooling function comprises a transformer body, wherein a water tank filled with cooling water is arranged below the transformer body, and the water tank is connected with the transformer body through a cooling mechanism;
the cooling mechanism comprises a spiral heat exchange tube, the heat exchange tube is arranged inside a transformer body, two ends of the heat exchange tube are symmetrically communicated with a water inlet tube and a water outlet tube, one ends of the water inlet tube and the water outlet tube, which are far away from the heat exchange tube, penetrate through the transformer body and are communicated with the tank wall of a water tank, a semiconductor refrigerator is arranged on one side tank wall of the water tank, the hot end of the semiconductor refrigerator is arranged outside the water tank, the cold end of the semiconductor refrigerator is arranged in cooling water in the water tank, a water pump is arranged on the water inlet tube, the top center of the transformer body is communicated with a gas guide tube with a T-shaped section, a first sealing bearing is embedded in the top center of the gas guide tube, a transmission shaft is fixedly connected to the inner ring wall of the first sealing bearing, two ends of the transmission shaft penetrate through the first sealing bearing and outwards extend, a rotating handle is fixedly connected to one end of the transmission shaft, three paddles are uniformly equidistant on the annular side wall of the rotating handle, one end of the transmission shaft in the gas guide tube is fixedly connected with a spiral vent, and the transformer body is provided with a miniature vent.
Preferably, the outer bottom of the water tank fixedly connected with driving motor, driving motor's output has the driving shaft through the coupling joint, the bottom of the tank center department of water tank is inlayed and is had second sealed bearing, the driving shaft passes second sealed bearing and extends in to the water tank, the driving shaft is connected with the inner circle wall of second sealed bearing, the inner bottom of the water tank is equipped with the driven shaft about driving shaft symmetry, the driven shaft passes through the rotation subassembly and rotates the inner bottom of the tank of connection, driving shaft and two driven shafts pass through the drive assembly transmission and connect, all fixed cup joint a plurality of stirring flabellums on the axial wall of driving shaft and driven shaft.
Preferably, a cross-shaped supporting frame is fixedly connected to the inner pipe wall of the vertical end of the air duct, a transmission hole is formed in the center of the supporting frame, and the transmission shaft penetrates through the transmission hole.
Preferably, the air duct is kept away from the both ends symmetry fixedly connected with of transformer body and is the breathing pipe of "L", the one end mouth of pipe that the air duct was kept away from to the breathing pipe sets up towards the transformer body, the one end mouth of pipe that the air duct was kept away from to the breathing pipe is connected with the filter screen.
Preferably, a liquid exchange pipe is communicated with one side wall of the water tank, which is close to the bottom of the water tank, a valve is arranged on the liquid exchange pipe, and a transparent scale plate is inlaid on one side wall of the water tank.
Preferably, the rotating assembly comprises an annular block with a T-shaped section, the annular block is fixedly connected to the lower end of the driven shaft, an annular groove with the T-shaped section is formed in the position, corresponding to the annular block, of the inner tank bottom of the water tank, and the annular block is rotationally connected in the annular groove.
Preferably, four rolling grooves are formed in the hole wall of the transmission hole at equal intervals in an annular shape by taking the transmission shaft as the center, rolling balls are arranged in the rolling grooves, pass through the notch of the rolling grooves and are in rolling connection with the shaft wall of the transmission shaft.
Preferably, the transmission assembly comprises a driving sprocket, the driving sprocket is fixedly sleeved on the shaft wall of the driving shaft, driven sprockets are sleeved on the driven shafts, and the driving sprocket and the driven sprockets are connected through chain transmission.
Compared with the prior art, the invention provides a transformer device with a cooling function, which has the following beneficial effects:
1. according to the transformer device with the cooling function, the cooling mechanism is arranged, the semiconductor refrigerator is used for refrigerating the cooling water in the water tank, the water pump and the water inlet pipe are used for conveying the refrigerated cooling water into the heat exchange pipe, the heat exchange pipe exchanges heat with the heat in the transformer main body, the temperature in the transformer main body is quickly lowered, and the cooling water after exchanging heat is discharged into the water tank through the water outlet pipe, so that the cooling water resource can be repeatedly utilized, and the waste of the water resource is reduced; simultaneously when external wind is blown, wind force blows the paddle on the rotating handle for the paddle atress drives the rotating handle and rotates, and the rethread transmission shaft drives helical blade and rotates in the air duct, makes the outside air of air duct gush into in the transformer main part through the air duct, cools down in the transformer main part, utilizes natural wind as power, accomplishes the cooling process, has improved the cooling effect to in the transformer main part.
2. This transformer device with cooling function through setting up driving motor, driving shaft, second sealed bearing, driven shaft, stirring flabellum, rotating assembly and drive assembly, and driving motor drives the driving shaft and rotates, makes two driven shafts and driving shaft to do the same direction rotation of same speed through drive assembly and rotating assembly, and driving shaft and driven shaft drive stirring flabellum on oneself again and rotate, carry out abundant stirring to the cooling water in the water tank and mix, guaranteed that the cooling water temperature is unanimous in the water tank, guaranteed the cooling effect in the transformer main part.
Drawings
Fig. 1 is a schematic structural diagram of a transformer device with a cooling function according to the present invention;
fig. 2 is a schematic diagram of the inside of a water tank in a transformer device with a cooling function according to the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 1;
fig. 4 is an enlarged view of a portion B in fig. 2.
In the figure: 1. a transformer body; 2. a water tank; 3. a heat exchange tube; 4. a water inlet pipe; 5. a water outlet pipe; 6. a semiconductor refrigerator; 7. a water pump; 8. an air duct; 9. a first sealed bearing; 10. a transmission shaft; 11. a rotating handle; 12. a paddle; 13. spiral fan blades; 14. a driving motor; 15. a driving shaft; 16. a second sealed bearing; 17. a driven shaft; 18. stirring fan blades; 19. a support frame; 20. an air suction pipe; 21. a liquid exchange tube; 22. an annular block; 23. an annular groove; 24. a rolling groove; 25. a ball; 26. a drive sprocket; 27. a driven sprocket; 28. and (3) a chain.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, a transformer device with a cooling function comprises a transformer body 1, wherein a water tank 2 filled with cooling water is arranged below the transformer body 1, and the water tank 2 is connected with the transformer body 1 through a cooling mechanism;
the cooling mechanism comprises a spiral heat exchange tube 3, the heat exchange tube 3 is arranged inside a transformer body 1, two ends of the heat exchange tube 3 are symmetrically communicated with a water inlet tube 4 and a water outlet tube 5, one ends of the water inlet tube 4 and the water outlet tube 5, which are far away from the heat exchange tube 3, penetrate through the transformer body 1 and are communicated with the tank wall of a water tank 2, a semiconductor refrigerator 6 is arranged on one side tank wall of the water tank 2, the hot end of the semiconductor refrigerator 6 is arranged outside the water tank 2, the cold end of the semiconductor refrigerator 6 is arranged in cooling water in the water tank 2, a water pump 7 is arranged on the water inlet tube 4, the top center of the transformer body 1 is communicated with a gas guide tube 8 with a T-shaped section, a first sealing bearing 9 is inlaid at the top center of the gas guide tube 8, a transmission shaft 10 is fixedly connected to the inner ring wall of the first sealing bearing 9, two ends of the transmission shaft 10 penetrate through the first sealing bearing 9 and extend outwards, one end of the transmission shaft 10, a rotating handle 11 is fixedly connected to one end of the transmission shaft 10, three blades 12 are uniformly and equidistantly fixedly connected to the annular side wall of the rotating handle 11, one end of the transmission shaft 10 positioned in the gas guide tube 8 is fixedly connected with a spiral blade 13, and the air outlet 1 is provided with a miniature air outlet hole, and a miniature air inlet hole is formed in the miniature transformer;
the semiconductor refrigerator 6 is used for refrigerating the cooling water in the water tank 2, the water pump 7 and the water inlet pipe 4 are used for conveying the refrigerated cooling water into the heat exchange pipe 3, the heat exchange pipe 3 exchanges heat with the inside of the transformer main body 1, the inside of the transformer main body 1 is rapidly cooled, and then the cooling water after exchanging heat is discharged back into the water tank 2 through the water outlet pipe 5, so that the cooling water resource can be repeatedly utilized, and the waste of the water resource is reduced; simultaneously when external wind blows, wind force blows paddle 12 on rotating handle 11 for paddle 12 atress drives rotating handle 11 and takes place to rotate, and rethread transmission shaft 10 drives spiral flabellum 13 and rotates in air duct 8, makes the outside air of air duct 8 gush into in to transformer main part 1 through air duct 8, cools down in the transformer main part 1, utilizes natural wind as power, accomplishes the cooling process, has improved the cooling effect to in the transformer main part 1.
The outer bottom of the water tank 2 is fixedly connected with a driving motor 14, the output end of the driving motor 14 is connected with a driving shaft 15 through a coupling, a second sealing bearing 16 is embedded in the center of the bottom of the water tank 2, the driving shaft 15 penetrates through the second sealing bearing 16 and extends into the water tank 2, the driving shaft 15 is connected with the inner ring wall of the second sealing bearing 16, the inner bottom of the water tank 2 is symmetrically provided with a driven shaft 17 relative to the driving shaft 15, the driven shaft 17 is rotationally connected with the inner bottom of the water tank 2 through a rotating assembly, the driving shaft 15 and the two driven shafts 17 are in transmission connection through a transmission assembly, a plurality of stirring blades 18 are fixedly sleeved on the shaft walls of the driving shaft 15 and the driven shafts 17, the driving motor 14 drives the driving shaft 15 to rotate, the two driven shafts 17 and the driving shaft 15 rotate in the same speed and the same direction through the transmission assembly and the rotating assembly, the driving shaft 15 and the driven shaft 16 drive the stirring blades 18 on the self, cooling water in the water tank 2 is fully stirred and mixed, the cooling water in the water tank 2 is guaranteed to be consistent in temperature, and the cooling effect in the transformer main body 1 is guaranteed.
The support frame 19 that is "cross" type is fixedly connected with on the pipe wall in the vertical end of air duct 8, and the transmission hole has been seted up to the center department of support frame 19, and transmission shaft 10 passes the transmission hole setting, and the transmission shaft 10 rotates in the transmission hole when atress for pivoted is more stable when transmission shaft 10 atress.
The air duct 8 is kept away from the both ends symmetry fixedly connected with of transformer body 1 and is "L" type breathing pipe 20, and the one end mouth of pipe that the air duct 8 was kept away from to breathing pipe 20 sets up towards the transformer body, avoids the rainwater to get into in the air duct 8 through breathing pipe 10, and the one end mouth of pipe that the air duct 8 was kept away from to breathing pipe 20 is connected with the filter screen, filters the air that gets into in the breathing pipe 20 through the filter screen.
The water tank 2 is close to the intercommunication on the tank wall of one side of bottom of the case position and has trade liquid pipe 21, and installs the valve on the liquid pipe 21, changes the cooling water in the water tank 2 through trading liquid pipe 21, inlays on the tank wall of one side of water tank 2 and has transparent scale plate, is convenient for observe the content of cooling water in the water tank 2.
The rotating assembly comprises an annular block 22 with a T-shaped section, the annular block 22 is fixedly connected to the lower end of the driven shaft 17, an annular groove 23 with the T-shaped section is formed in the position, corresponding to the annular block 22, of the inner tank bottom of the water tank 2, the annular block 22 is rotatably connected in the annular groove 23, and the driven shaft 17 drives the annular block 22 to synchronously rotate in the annular groove 23 when rotating, so that the driven shaft 17 and the water tank 2 can be relatively rotated while being connected.
Four rolling grooves 24 are uniformly formed in the hole wall of the transmission hole at equal intervals in an annular mode by taking the transmission shaft 10 as the center, rolling balls 25 are arranged in the rolling grooves 24, the balls 25 penetrate through the notch of the rolling grooves 24, the balls 25 are connected to the shaft wall of the transmission shaft 10 in a rolling mode, the transmission columns 10 are clamped through the balls 25 which are distributed in an annular mode, and the transmission shaft 10 stably rotates in the transmission hole after being stressed.
The transmission assembly comprises a driving sprocket 26, the driving sprocket 26 is fixedly sleeved on the shaft wall of the driving shaft 15, driven sprockets 27 are sleeved on the two driven shafts 17, the driving sprocket 26 and the two driven sprockets 27 are in transmission connection through a chain 28, the driving shaft 15 is stressed and then drives the driving sprocket 26 to rotate, the two driven sprockets 27 are driven to rotate through the transmission of the chain 28, and then the two driving columns 17 and the driving shaft 15 are driven to rotate at the same speed and in the same direction.
In summary, in the transformer device with the cooling function, the semiconductor refrigerator 6 is used for refrigerating the cooling water in the water tank 2, the water pump 7 and the water inlet pipe 4 are used for conveying the refrigerated cooling water into the heat exchange pipe 3, the heat exchange pipe 3 exchanges heat with the heat in the transformer main body 1, the temperature in the transformer main body 1 is quickly lowered, and then the cooling water after exchanging heat is discharged into the water tank 2 through the water outlet pipe 5, so that the cooling water resource can be repeatedly utilized, and the waste of the water resource is reduced; meanwhile, when the outside wind blows, the wind blows the blades 12 on the rotating handle 11, so that the blades 12 are forced to drive the rotating handle 11 to rotate, and then the transmission shaft 10 drives the spiral fan blades 13 to rotate in the air guide pipe 8, so that air outside the air guide pipe 8 flows into the transformer main body 1 through the air guide pipe 8 to cool the inside of the transformer main body 1, and natural wind is used as power to complete the cooling process, so that the cooling effect in the transformer main body 1 is improved; the driving motor 14 drives the driving shaft 15 to rotate, the driving shaft 15 and the driving shaft 15 are driven to rotate at the same speed and in the same direction through the transmission assembly and the rotating assembly, the driving shaft 15 and the driven shaft 16 drive stirring blades 18 on the driving shaft and the driven shaft to rotate, cooling water in the water tank 2 is sufficiently stirred and mixed, the consistency of the temperature of the cooling water in the water tank 2 is ensured, and the cooling effect in the transformer main body 1 is ensured.
It should be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. The utility model provides a transformer device with cooling function, includes transformer body (1), its characterized in that: a water tank (2) filled with cooling water is arranged below the transformer body (1), and the water tank (2) is connected with the transformer body (1) through a cooling mechanism; the cooling mechanism comprises a heat exchange tube (3) which is spiral, the heat exchange tube (3) is arranged inside a transformer body (1), two ends of the heat exchange tube (3) are symmetrically communicated with a water inlet tube (4) and a water outlet tube (5), one ends of the water inlet tube (4) and the water outlet tube (5) far away from the heat exchange tube (3) penetrate through the transformer body (1) and are communicated with the tank wall of a water tank (2), a semiconductor refrigerator (6) is arranged on one side tank wall of the water tank (2), the hot end of the semiconductor refrigerator (6) is arranged outside the water tank (2), the cold end of the semiconductor refrigerator (6) is arranged in cooling water in the water tank (2), a water pump (7) is arranged on the water inlet tube (4), a gas guide tube (8) with a T-shaped section is communicated with the center of the top of the transformer body (1), a first sealing bearing (9) is inlaid in the center of the top of the gas guide tube (8), a transmission shaft (10) is fixedly connected with the inner ring wall of the first sealing bearing (9), a transmission shaft (10) is fixedly connected with the inner ring wall of the water tank (9), the transmission shaft (10) penetrates through the first sealing bearing (10) and extends to the first sealing bearing (11) and is fixedly connected with the inner ring-shaped blades (11) at two ends of the inner ring-shaped gas guide tube (8), one end of a transmission shaft (10) positioned in the air duct (8) is fixedly connected with a spiral fan blade (13), and a miniature air outlet hole is formed in the transformer body (1);
the outer tank bottom of the water tank (2) is fixedly connected with a driving motor (14), the output end of the driving motor (14) is connected with a driving shaft (15) through a coupling, a second sealing bearing (16) is embedded in the center of the tank bottom of the water tank (2), the driving shaft (15) penetrates through the second sealing bearing (16) and extends into the water tank (2), the driving shaft (15) is connected with the inner ring wall of the second sealing bearing (16), the inner tank bottom of the water tank (2) is symmetrically provided with a driven shaft (17) relative to the driving shaft (15), the driven shaft (17) is rotationally connected with the inner tank bottom of the water tank (2) through a rotating assembly, the driving shaft (15) and the two driven shafts (17) are in transmission connection through a transmission assembly, and a plurality of stirring blades (18) are fixedly sleeved on the shaft walls of the driving shaft (15) and the driven shaft (17);
a cross-shaped supporting frame (19) is fixedly connected to the inner pipe wall of the vertical end of the air duct (8), a transmission hole is formed in the center of the supporting frame (19), and the transmission shaft (10) penetrates through the transmission hole;
the transformer is characterized in that two ends of the air guide pipe (8) far away from the transformer body (1) are symmetrically and fixedly connected with an L-shaped air suction pipe (20), one end pipe orifice of the air suction pipe (20) far away from the air guide pipe (8) is arranged towards the transformer body, and one end pipe orifice of the air suction pipe (20) far away from the air guide pipe (8) is connected with a filter screen;
a liquid exchange tube (21) is communicated with one side wall of the water tank (2) close to the bottom of the water tank, a valve is arranged on the liquid exchange tube (21), and a transparent scale plate is inlaid on one side wall of the water tank (2);
the rotating assembly comprises an annular block (22) with a T-shaped section, the annular block (22) is fixedly connected to the lower end of the driven shaft (17), an annular groove (23) with the T-shaped section is formed in the position, corresponding to the annular block (22), of the inner tank bottom of the water tank (2), and the annular block (22) is rotatably connected in the annular groove (23);
four rolling grooves (24) are uniformly formed in the hole wall of the transmission hole at equal intervals in a ring shape by taking the transmission shaft (10) as the center, rolling balls (25) are arranged in the rolling grooves (24), the balls (25) penetrate through the notch of the rolling grooves (24), and the balls (25) are in rolling connection with the shaft wall of the transmission shaft (10);
the transmission assembly comprises a driving sprocket (26), the driving sprocket (26) is fixedly sleeved on the shaft wall of the driving shaft (15), driven sprockets (27) are sleeved on the driven shafts (17), and the driving sprocket (26) and the two driven sprockets (27) are in transmission connection through a chain (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136013.3A CN112289554B (en) | 2020-10-22 | 2020-10-22 | Transformer device with cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011136013.3A CN112289554B (en) | 2020-10-22 | 2020-10-22 | Transformer device with cooling function |
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| Publication Number | Publication Date |
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| CN112289554A CN112289554A (en) | 2021-01-29 |
| CN112289554B true CN112289554B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011136013.3A Active CN112289554B (en) | 2020-10-22 | 2020-10-22 | Transformer device with cooling function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117665526B (en) * | 2024-02-01 | 2024-04-19 | 成都恒合控制系统有限公司 | IGBT monitoring system of wind power converter |
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| WO2018104790A1 (en) * | 2016-12-07 | 2018-06-14 | Abb Schweiz Ag | Liquid tank inspection including device for launching submersible |
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| JP2014175398A (en) * | 2013-03-07 | 2014-09-22 | Fuji Electric Co Ltd | High frequency transformer |
| CN207604324U (en) * | 2017-11-03 | 2018-07-13 | 安徽东华农业科技开发股份有限公司 | A kind of nutrition liquid supply system |
| CN207980983U (en) * | 2018-01-17 | 2018-10-19 | 麻二军 | A kind of cattle and sheep efficient feed mixing arrangement |
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| CN211442703U (en) * | 2019-12-25 | 2020-09-08 | 深圳市鸿盈鸿科技有限公司 | Water area rescue helmet |
| CN211265183U (en) * | 2020-03-17 | 2020-08-14 | 深圳市峰亚电子有限公司 | High-frequency transformer |
| CN211237919U (en) * | 2020-03-17 | 2020-08-11 | 中山市百纳电子科技有限公司 | Rectifier transformer capable of safely dissipating heat |
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| CN111800994B (en) * | 2020-07-30 | 2022-12-16 | 淮南万泰电子股份有限公司 | High-voltage frequency converter with water cooling structure and working method thereof |
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|---|---|---|---|---|
| WO2018104790A1 (en) * | 2016-12-07 | 2018-06-14 | Abb Schweiz Ag | Liquid tank inspection including device for launching submersible |
| CN110277739A (en) * | 2019-05-29 | 2019-09-24 | 扬州中瑞电气有限公司 | A kind of high waterproof safety type power distribution automation monitor terminal in open air |
| CN210896854U (en) * | 2019-09-10 | 2020-06-30 | 天津市祥源安高中频电源变压器有限公司 | Dry-type transformer for high-rise building |
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| CN112289554A (en) | 2021-01-29 |
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