CN114300226B - Safe explosion-proof oil immersed transformer - Google Patents
Safe explosion-proof oil immersed transformer Download PDFInfo
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- CN114300226B CN114300226B CN202111554151.8A CN202111554151A CN114300226B CN 114300226 B CN114300226 B CN 114300226B CN 202111554151 A CN202111554151 A CN 202111554151A CN 114300226 B CN114300226 B CN 114300226B
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Abstract
The invention discloses a safe explosion-proof oil immersed transformer, which comprises: the transformer body, oil adjusting mechanism, terminal, relief valve and gas pitcher are installed at the top of transformer body, and aviation baffle and gas transmission mechanism are installed respectively to the left and right sides of transformer body, and heat dissipation mechanism is installed respectively to the front and back both sides of transformer body. The invention sets up the oil liquid regulating mechanism in the transformer, this oil liquid regulating mechanism is made up of column and liquid guiding ball mounted on column, the liquid guiding ball is made of thermal shrinkage material, the liquid guiding ball is immersed into oil liquid after the transformer is mounted, and the oil liquid enters the liquid guiding ball through the liquid inlet on the surface of the liquid guiding ball, along with the temperature rise of oil liquid, the liquid guiding ball is heated and contracted, squeeze the oil liquid in the interior, some oil liquid is discharged through the liquid inlet, some oil liquid is guided into the liquid guiding ball above through the liquid guiding hole, the outside oil liquid flows to its direction after the liquid guiding ball volume is reduced at the same time, have raised the mobility of the oil liquid in the transformer.
Description
Technical Field
The invention relates to the technical field of oil-immersed transformers, in particular to a safe explosion-proof oil-immersed transformer.
Background
Distribution transformers are one of the important devices in industrial and mining enterprises and civil building power supply and distribution systems, and they reduce 10 (6) kV or 35kV network voltage to 230/400V bus voltage used by users. The product is suitable for alternating current 50 (60) Hz, the three-phase maximum rated capacity is 2500kVA (single-phase maximum rated capacity 833kVA, single-phase transformers are not recommended), the product can be used indoors (outdoors), the product can be mounted on a rod when the capacity is 315kVA or below, the ambient temperature is not higher than 40 ℃, not lower than-25 ℃, the highest daily average temperature is 30 ℃, the highest annual average temperature is 20 ℃, the relative humidity is not higher than 90% (the ambient temperature is 25 ℃), and the altitude is not higher than 1000m.
At present, the existing oil immersed transformer has the following problems: (1) The oil in the oil immersed transformer is relatively static, the mobility of the oil is poor, and the temperature of the oil close to a device is high when the oil immersed transformer is used, so that the local temperature is too high to influence the service life; (2) The transformer is relatively closed, and the fire is difficult to extinguish rapidly when the inside fires, so that larger loss is caused. For this reason, it is necessary to design a new scheme to give improvement.
Disclosure of Invention
The invention aims to provide a safe explosion-proof oil-immersed transformer, which solves the problems that the oil in the oil-immersed transformer is relatively static, the fluidity is poor, and the temperature of the oil close to a device is high when the oil-immersed transformer is used, so that the service life is influenced due to the fact that the local temperature is too high; the transformer is relatively closed, and the inside is difficult to put out a fire fast when catching fire, causes the problem of great loss, satisfies the in-service use demand.
In order to achieve the above purpose, the present invention provides the following technical solutions: a safe explosion-proof oil immersed transformer, comprising: the transformer comprises a transformer body, wherein an oil liquid adjusting mechanism, a binding post, a pressure relief valve and a gas tank are arranged at the top of the transformer body, an air deflector and a gas transmission mechanism are respectively arranged at the left side and the right side of the transformer body, and a heat dissipation mechanism is respectively arranged at the front side and the rear side of the transformer body;
the oil adjusting mechanism is provided with four and arranges the front end and the left and right sides at transformer body top respectively altogether, oil adjusting mechanism includes stand and drain ball, the drain ball sets up four altogether and the equidistance is installed on the stand, the feed liquor hole has been seted up at the top of drain ball and is close to the junction of drain ball and stand, and the through-hole is seted up at three drain ball bottom surface middle part that is located the top, the terminal of stand runs through the through-hole of three drain ball in top and extends to the inside of terminal drain ball and forms the opening at the terminal of stand, and the inside of stand is hollow structure and surface and has seted up the drain hole, the drain hole is arranged in the drain ball inside, the upper end connecting stud of stand, the top of transformer body is run through to the stud upper end and adopts the nut fastening.
As a preferred implementation mode of the invention, the air conveying mechanism is arranged below the air guide plate, two ends of the air conveying mechanism are respectively connected with an air duct, the tail ends of the air ducts vertically extend upwards from two sides of the air conveying mechanism and are connected with the upper end of the side wall of the transformer body, a guide pipe is arranged in the transformer body, the guide pipe is of a U-shaped structure, two ends of the guide pipe are respectively connected with the air ducts and are internally communicated, two air outlet discs are arranged at the bottom of the guide pipe, and a plurality of small holes are formed in the surfaces of the air outlet discs.
As a preferred implementation mode of the invention, the inside of the air conveying mechanism is of a hollow structure, two fans are arranged on the side wall, the top of the erection mechanism is provided with a fixed groove and is connected with a filter screen in a mosaic manner through the fixed groove, the upper end of the filter screen is arranged in the fixed groove and is connected with a sealing plate, and the middle part of the top surface of the sealing plate is provided with a handle.
As a preferred implementation mode of the invention, the surface of the air deflector is uniformly provided with a plurality of air guide holes, the air guide holes are obliquely arranged, the air deflector is internally provided with a cavity communicated with the air guide holes, the inner top of the transformer body is provided with an air guide groove communicated with the air guide cavity, the air guide groove is communicated with the heat dissipation mechanism, and the air deflector is obliquely arranged, and two sides of the air deflector are respectively provided with a baffle.
As a preferred embodiment of the invention, the heat dissipation mechanism comprises an upper heat dissipation block, heat dissipation fins and a lower heat dissipation block, wherein the heat dissipation fins are uniformly distributed and divided into five groups, and the heat dissipation fins are arranged between the upper heat dissipation block and the lower heat dissipation block and are respectively connected with the upper heat dissipation block and the lower heat dissipation block, and the side walls of the heat dissipation fins are connected with the outer wall of the transformer body.
As a preferred embodiment of the invention, a heat dissipation flow channel is formed between two adjacent heat dissipation fins, air outlet holes corresponding to the heat dissipation flow channels are respectively formed on opposite surfaces of the upper heat dissipation block and the lower heat dissipation block, air guide cavities communicated with the air outlet holes are respectively formed inside the upper heat dissipation block and the lower heat dissipation block, the air guide cavities inside the upper heat dissipation block are communicated with the air guide grooves, and two ends of the air guide cavities inside the lower heat dissipation block extend to the surface of the lower heat dissipation block and form openings on the surface of the lower heat dissipation block.
As a preferred implementation mode of the invention, the inside of the gas tank is filled with carbon dioxide gas, the gas injection port of the gas tank is provided with the pressure gauge, the bottom of the gas tank is symmetrically provided with the exhaust pipe, the middle part of the bottom surface of the gas tank is provided with the guide posts, the guide posts are of hollow structures, two sides of each guide post are respectively provided with the gas outlet pipe and are communicated with the exhaust pipe through the gas outlet pipe, the guide posts are of hollow structures and are internally provided with the sealing heads, the bottom of each guide post is of a round table shape, the middle part of the bottom surface of each guide post is provided with the heat conducting hole, and the sealing heads are made of heat-shrinkable materials.
As a preferred embodiment of the invention, the liquid guide ball is made of heat shrinkage material, the heat shrinkage rate is increased from bottom to top, and the aperture of the liquid inlet on the surface of the liquid guide ball is decreased from outside to inside to form a tapered structure.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, the oil liquid adjusting mechanism is arranged in the transformer and consists of the upright post and the liquid guide ball arranged on the upright post, the liquid guide ball is made of a heat shrinkage material, after the installation of the transformer is completed, the liquid guide ball is immersed into oil liquid, the oil liquid enters the liquid guide ball through a liquid inlet hole on the surface of the liquid guide ball, the liquid guide ball is heated and contracted along with the rising of the temperature of the oil liquid, the oil liquid in the liquid guide ball is extruded, part of the oil liquid is discharged through the liquid inlet hole, part of the oil liquid is guided into the liquid guide ball above through the liquid guide hole, and meanwhile, the external oil liquid flows towards the direction after the volume of the liquid guide ball is reduced, so that the fluidity of the oil liquid in the transformer is improved.
(2) In the invention, the two sides of the transformer are respectively provided with the gas transmission mechanisms, the gas transmission mechanisms can drive external air to enter the transformer body, small bubbles are formed to flow upwards in the oil, and the temperature of the air conveyed by the outside is lower, so that the oil is cooled, and meanwhile, the fluidity of the internal oil is increased.
(3) According to the invention, the gas tank is arranged at the top of the transformer, carbon dioxide gas is filled in the gas tank, the temperature of the transformer rises sharply when the transformer catches fire, and after the heat shrinkage of the sealing head at the lower end of the gas tank, the carbon dioxide gas is discharged through the exhaust pipe, so that the fire extinguishing effect is achieved.
Drawings
Fig. 1 is a structural diagram of a safe explosion-proof oil-immersed transformer according to the present invention;
fig. 2 is an internal structure diagram of the safe explosion-proof oil-immersed transformer according to the present invention;
FIG. 3 is a schematic diagram of the internal structure of the heat dissipation mechanism according to the present invention;
FIG. 4 is a block diagram of the oil adjusting mechanism of the present invention;
FIG. 5 is a block diagram of a gas delivery mechanism according to the present invention;
fig. 6 is a structural view of the gas tank according to the present invention.
In the figure, 1, a transformer body; 2. an oil liquid adjusting mechanism; 3. a pressure release valve; 4. a gas tank; 5. binding posts; 6. an air deflector; 7. an air guide hole; 8. a baffle; 9. a gas delivery mechanism; 10. a handle; 11. a sealing plate; 12. a blower; 13. an air duct; 14. a lower heat dissipation block; 15. a heat sink; 16. an upper heat dissipation block; 17. an air guide groove; 18. an air outlet disc; 19. a conduit; 20. a cavity; 21. an air guide cavity; 22. an air outlet hole; 23. a heat dissipation flow channel; 24. a stud; 25. a liquid guiding ball; 26. a column; 27. a liquid inlet hole; 28. a through hole; 29. a liquid guiding hole; 30. a guide post; 31. an exhaust pipe; 32. an air outlet pipe; 33. a seal head; 34. a heat conduction hole; 35. a fixing groove; 36. and (3) a filter screen.
Detailed Description
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.
Example 1
Referring to fig. 1-6, the present invention provides a technical solution: a safe explosion-proof oil immersed transformer, comprising: the transformer comprises a transformer body 1, wherein an oil liquid adjusting mechanism 2, a binding post 5, a pressure relief valve 3 and a gas tank 4 are arranged at the top of the transformer body 1, the binding post 5 is used for wiring, the oil liquid adjusting mechanism 2 plays a role in adjusting internal oil liquid, the uniformity of heating the oil liquid is increased, the cooling effect is improved, an air deflector 6 and a gas transmission mechanism 9 are respectively arranged at the left side and the right side of the transformer body 1, the gas transmission mechanism 9 transmits gas to the inside of the transformer, a heat dissipation mechanism is respectively arranged at the front side and the rear side of the transformer body 1, and the heat dissipation mechanism plays a role in cooling; the oil adjusting mechanism 2 is provided with four and is arranged at the front end and the left side and the right side of the top of the transformer body 1 respectively, the oil adjusting mechanism 2 comprises upright posts 26 and liquid guide balls 25, the liquid guide balls 25 are arranged at four and equidistant positions on the upright posts 26, liquid inlet holes 27 are formed in the tops of the liquid guide balls 25 and close to the connection positions of the liquid guide balls 25 and the upright posts 26, through holes 28 are formed in the middle of the bottom surfaces of the three liquid guide balls 25 positioned above, the tail ends of the upright posts 26 penetrate through the through holes 28 of the three liquid guide balls 25 above and extend to the inside of the liquid guide balls 25 at the tail ends of the upright posts 26 to form openings, the inside of the upright posts 26 is hollow, liquid guide holes 29 are formed in the surface of the liquid guide balls, the inside of the liquid guide balls 25, the upper ends of the upright posts 26 are connected with studs 24, the upper ends of the studs 24 penetrate through the top of the transformer body 1 and are fastened by nuts, the liquid guide balls 25 are made of heat shrinkage materials, the liquid guide balls 25 enter the inside oil, the inside the liquid guide balls 25 along with the inside of the liquid guide balls, the liquid guide balls 25 shrink, the liquid guide balls shrink the liquid inside the liquid guide balls 25, the liquid guide balls shrink the liquid guide balls, the liquid inside the liquid guide balls and the liquid guide balls are extruded inside the liquid guide balls and the liquid.
Further improved, as shown in fig. 1: the surface of aviation baffle 6 has evenly seted up a plurality of wind-guiding hole 7, and wind-guiding hole 7 slope setting and the cavity 20 with wind-guiding hole 7 intercommunication has been seted up to the inside of aviation baffle 6, and air guide groove 17 that is linked together with air guide cavity 21 has been seted up at the interior top of transformer body 1, and air guide groove 17 is linked together with cooling mechanism, and baffle 8 is installed respectively to aviation baffle 6 slope setting and both sides, and aviation baffle 6 plays the wind-guiding effect, and outside air enters into inside and cools down the transformer through wind-guiding hole 7 when blowing to aviation baffle 6 surface.
Further improved, as shown in fig. 4: the liquid guiding ball 25 is made of heat shrinkage materials, the heat shrinkage rate is increased from bottom to top, the aperture of the liquid inlet 27 on the surface of the liquid guiding ball 25 is decreased from outside to inside to form a tapered structure, the heat shrinkage rates of the liquid guiding ball 25 are different, and the volumes of the liquid guiding balls after expansion at the same temperature are also different.
Example two
Further refinedly, as shown in fig. 1 and 5: the air delivery mechanism 9 is arranged below the air deflector 6, two ends of the air delivery mechanism 9 are respectively connected with an air duct 13, the tail end of the air duct 13 extends upwards vertically from two sides of the air delivery mechanism 9 and is connected with the upper end of the side wall of the transformer body 1, a guide pipe 19 is arranged in the transformer body 1, the guide pipe 19 is of a U-shaped structure, two ends of the guide pipe 19 are respectively connected with the air duct 13 and are communicated with the inside, two air outlet discs 18 are arranged at the bottom of the guide pipe 19, a plurality of small holes are formed in the surfaces of the air outlet discs 18, small bubbles are generated after the air delivery mechanism 9 feeds the air outlet discs 18 and rise, and a small bubble rising path is as far as possible and a terminal junction is formed. The inside of the air delivery mechanism 9 is of a hollow structure, two fans 12 are arranged on the side walls, a fixing groove 35 is formed in the top of the erection mechanism, a filter screen 36 is connected with the fixing groove 35 in an embedded mode, the upper end of the filter screen 36 is arranged in the fixing groove 35 and connected with a sealing plate 11, a handle 10 is arranged in the middle of the top surface of the sealing plate 11, and the fans 12 provide wind power and filter the wind power through the filter screen 36.
Example III
Further improved, as shown in fig. 3: the heat dissipation mechanism comprises an upper heat dissipation block 16, heat dissipation fins 15 and a lower heat dissipation block 14, wherein the heat dissipation fins 15 are uniformly distributed and divided into five groups, the heat dissipation fins 15 are arranged between the upper heat dissipation block 16 and the lower heat dissipation block 14 and are respectively connected with the upper heat dissipation block 16 and the lower heat dissipation block 14, and the side walls of the heat dissipation fins 15 are connected with the outer wall of the transformer body 1. A heat dissipation flow channel 23 is formed between two adjacent heat dissipation fins 15, air outlet holes 22 corresponding to the heat dissipation flow channel 23 are respectively formed on opposite surfaces of the upper heat dissipation block 16 and the lower heat dissipation block 14, air guide cavities 21 communicated with the air outlet holes 22 are respectively formed in the upper heat dissipation block 16 and the lower heat dissipation block 14, the air guide cavities 21 in the upper heat dissipation block 16 are communicated with the air guide grooves 17, two ends of the air guide cavities 21 in the lower heat dissipation block 14 extend to the surface of the lower heat dissipation block 14 and form openings on the surface of the lower heat dissipation block 14, and the air guide plate 6 guides heat dissipation air to be output through the upper heat dissipation block 16 and flows out from two sides of the lower heat dissipation block 14 and the openings of the heat dissipation flow channel 23 after passing through the heat dissipation flow channel 23.
Example IV
Further improved, as shown in fig. 6: the inside of gas pitcher 4 is filled with carbon dioxide gas and the gas injection mouth of gas pitcher 4 installs manometer, blast pipe 31 is installed to the bottom symmetry of gas pitcher 4, the bottom surface mid-mounting of gas pitcher 4 has guide pillar 30, guide pillar 30 is hollow structure and both sides install outlet duct 32 respectively and communicate with blast pipe 31 through outlet duct 32, guide pillar 30 is hollow structure and internally mounted have head 33, the bottom of guide pillar 30 is round platform form and bottom surface middle part has seted up heat conduction hole 34, head 33 is made for heat shrinkage material, install gas pitcher 4 at the top of transformer, the inside carbon dioxide gas that fills of gas pitcher 4, the temperature rises sharply when the transformer is inside to catch fire, the head 33 of gas pitcher 4 lower extreme is after the pyrocondensation, carbon dioxide gas discharges through blast pipe 31, play the effect of putting out a fire.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A safe explosion-proof oil immersed transformer, comprising: transformer body (1), its characterized in that: an oil liquid adjusting mechanism (2), a binding post (5), a pressure relief valve (3) and a gas tank (4) are arranged at the top of the transformer body (1), an air deflector (6) and a gas transmission mechanism (9) are respectively arranged at the left side and the right side of the transformer body (1), and a heat dissipation mechanism is respectively arranged at the front side and the rear side of the transformer body (1);
the oil adjusting mechanism (2) is provided with four liquid inlet holes (27) at the top of the liquid guide ball (25) and near the joint of the liquid guide ball (25) and the upright (26), through holes (28) are formed in the middle of the bottom surfaces of the three liquid guide balls (25) above, the tail ends of the upright (26) penetrate through the through holes (28) of the three liquid guide balls (25) above and extend to the inside of the liquid guide ball (25) at the tail ends of the upright (26) to form openings at the tail ends of the upright (26), the inside of the upright (26) is of a hollow structure, liquid guide holes (29) are formed in the surface of the upright (26), the liquid guide holes (29) are formed in the inside of the liquid guide ball (25), the upper ends of the upright (26) are connected with studs (24), and the upper ends of the upright (24) penetrate through the transformer (1) and are fastened by nuts;
the inside of the gas tank (4) is filled with carbon dioxide gas, a pressure gauge is arranged at a gas injection port of the gas tank (4), exhaust pipes (31) are symmetrically arranged at the bottom of the gas tank (4), guide columns (30) are arranged in the middle of the bottom surface of the gas tank (4), the guide columns (30) are of hollow structures, two sides of each guide column are respectively provided with an air outlet pipe (32) and are communicated with the exhaust pipes (31) through the air outlet pipes (32), the guide columns (30) are of hollow structures and are internally provided with sealing heads (33), the bottoms of the guide columns (30) are of round table shapes, heat conducting holes (34) are formed in the middle of the bottom surface, and the sealing heads (33) are made of heat shrinkage materials;
the liquid guiding ball (25) is made of heat shrinkage materials, the heat shrinkage rate is increased from bottom to top, the aperture of a liquid inlet (27) on the surface of the liquid guiding ball (25) is gradually decreased from outside to inside to form a tapered structure, the liquid guiding ball (25) is immersed into oil after the installation of the transformer body (1) is completed, the oil enters the liquid guiding ball (25) through the liquid inlet on the surface of the liquid guiding ball (25), the liquid guiding ball (25) is heated and shrunk along with the temperature rise of the oil, the oil in the liquid guiding ball is extruded, part of the oil is discharged through the liquid inlet (27), and part of the oil flows in the direction of the liquid guiding ball above through the liquid guiding hole (27), and meanwhile, the volume of the liquid guiding ball (25) is reduced, so that the fluidity of the oil in the transformer is improved.
2. The safety explosion-proof oil immersed transformer according to claim 1, wherein: the utility model discloses a transformer, including gas-supply mechanism (9), gas-guide tube (13) are connected with respectively in the below of aviation baffle (6), the end of gas-guide tube (13) is by the vertical upwards extension in gas-supply mechanism (9) both sides and be connected with the lateral wall upper end of transformer body (1), the inside of transformer body (1) is provided with pipe (19), pipe (19) are U type structure and both ends are connected and inside intercommunication respectively with gas-guide tube (13), two gas-outlet disk (18) are installed to pipe (19) bottom, the surface of gas-outlet disk (18) is formed with a plurality of aperture.
3. The safety explosion-proof oil immersed transformer according to claim 2, wherein: the inside of gas-transmission mechanism (9) is hollow structure and installs two fans (12) on the lateral wall, and fixed slot (35) are seted up at the top of erectting mechanism and inlay through fixed slot (35) and are connected with filter screen (36), in fixed slot (35) are arranged in to the upper end of filter screen (36) and are connected with shrouding (11), top surface mid-mounting of shrouding (11) has handle (10).
4. The safety explosion-proof oil immersed transformer according to claim 1, wherein: a plurality of air guide holes (7) are uniformly formed in the surface of the air guide plate (6), the air guide holes (7) are obliquely arranged, a cavity (20) communicated with the air guide holes (7) is formed in the air guide plate (6), an air guide groove (17) communicated with an air guide cavity (21) is formed in the inner top of the transformer body (1), the air guide groove (17) is communicated with a heat dissipation mechanism, and baffle plates (8) are respectively arranged on two sides of the air guide plate (6) in an inclined mode.
5. The safety explosion-proof oil immersed transformer according to claim 1, wherein: the heat dissipation mechanism comprises an upper heat dissipation block (16), heat dissipation fins (15) and a lower heat dissipation block (14), wherein the heat dissipation fins (15) are uniformly distributed and divided into five groups, and the heat dissipation fins (15) are arranged between the upper heat dissipation block (16) and the lower heat dissipation block (14) and are respectively connected with the upper heat dissipation block (16) and the lower heat dissipation block (14), and the side walls of the heat dissipation fins (15) are connected with the outer wall of the transformer body (1).
6. The safety explosion-proof oil immersed transformer according to claim 5, wherein: a heat dissipation flow channel (23) is formed between two adjacent heat dissipation fins (15), air outlet holes (22) corresponding to the heat dissipation flow channels (23) are respectively formed in opposite faces of the upper heat dissipation block (16) and the lower heat dissipation block (14), air guide cavities (21) communicated with the air outlet holes (22) are respectively formed in the upper heat dissipation block (16) and the lower heat dissipation block (14), the air guide cavities (21) in the upper heat dissipation block (16) are communicated with the air guide grooves (17), and two ends of the air guide cavities (21) in the lower heat dissipation block (14) extend to the surface of the lower heat dissipation block (14) and form openings in the surface of the lower heat dissipation block (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111554151.8A CN114300226B (en) | 2021-12-17 | 2021-12-17 | Safe explosion-proof oil immersed transformer |
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| CN202111554151.8A CN114300226B (en) | 2021-12-17 | 2021-12-17 | Safe explosion-proof oil immersed transformer |
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| CN114300226B true CN114300226B (en) | 2023-06-02 |
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| CN111540570A (en) * | 2020-06-09 | 2020-08-14 | 冯国民 | Transformer cabinet based on self-feedback uniform heat dissipation |
| CN111728279A (en) * | 2020-08-04 | 2020-10-02 | 深圳市新宜康科技股份有限公司 | Composite oil guide structure and forming method thereof |
| CN113066640A (en) * | 2021-03-22 | 2021-07-02 | 南通宁海机械电器有限公司 | Self-floating and latent uniform-heating oil-immersed transformer for transformer substation |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6179209A (en) * | 1984-09-27 | 1986-04-22 | Toshiba Corp | Duct spacer for foil wound transformer |
| JPH11102822A (en) * | 1997-09-26 | 1999-04-13 | Fuji Electric Co Ltd | Method of measuring flow velocity of oil in oil-immersed transformer |
| CN203360136U (en) * | 2013-05-28 | 2013-12-25 | 广州南潮环卫服务有限公司 | Oil-water separation device |
| CN103779044A (en) * | 2013-12-17 | 2014-05-07 | 浙江金冠特种变压器有限公司 | Cooling oil sealing and cooling combined refrigerating system of transformer |
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| CN111540570A (en) * | 2020-06-09 | 2020-08-14 | 冯国民 | Transformer cabinet based on self-feedback uniform heat dissipation |
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|---|---|
| CN114300226A (en) | 2022-04-08 |
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