CN113593839B - Oil-immersed explosion-proof transformer - Google Patents
Oil-immersed explosion-proof transformer Download PDFInfo
- Publication number
- CN113593839B CN113593839B CN202111168655.6A CN202111168655A CN113593839B CN 113593839 B CN113593839 B CN 113593839B CN 202111168655 A CN202111168655 A CN 202111168655A CN 113593839 B CN113593839 B CN 113593839B
- Authority
- CN
- China
- Prior art keywords
- oil
- yoke
- pressing block
- transformer
- iron core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- 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
- H01F27/022—Encapsulation
-
- 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
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses an oil-immersed explosion-proof transformer which comprises a transformer assembly, wherein an iron core assembly is movably arranged in the transformer assembly, a top cover is movably arranged at the top end of the transformer assembly, three fixed tables are fixedly arranged on one side of the top end of the top cover, high-voltage terminals are arranged at the top ends of the fixed tables, and three low-voltage terminals are arranged on the other side of the top end of the top cover. According to the invention, the oil in the oil tank can not enter the iron core through the sealing ring, so that the phenomenon that the oil flows into the gap between the iron core and the upper iron yoke when the device is assembled in the using process, and the iron core is in an accident in the using process is prevented.
Description
Technical Field
The invention relates to the technical field of oil-immersed transformers, in particular to an oil-immersed explosion-proof transformer.
Background
With the rapid development of social economy, the use of a transformer becomes one of the very common machines in daily life of people, a distribution transformer is one of important devices in power supply and distribution systems of industrial and mining enterprises and civil buildings, and a low-voltage winding of an oil-immersed transformer generally adopts a cylindrical structure with copper foil around a shaft except for a small-capacity copper conductor; the high-voltage winding adopts a multi-layer cylindrical structure, so that the ampere-turn distribution of the winding is balanced, the magnetic flux leakage is small, the mechanical strength is high, and the short-circuit resistance is strong.
However, when the conventional oil-immersed transformer is used, oil often enters internal components to cause failure and failure of the components, so that the device is prone to explosion danger, and the heat dissipation effect of the device is poor.
Disclosure of Invention
The invention aims to provide an oil-immersed explosion-proof transformer, which solves the problems that the oil-immersed transformer proposed in the background art is often used, because oil is immersed into internal parts, parts are failed and invalid, further, the device is easy to explode and is not good in heat dissipation effect, and the like.
In order to achieve the purpose, the invention provides the following technical scheme: an oil immersed type explosion-proof transformer comprises a transformer assembly, wherein an iron core assembly is movably mounted inside the transformer assembly, a top cover is movably mounted at the top end of the transformer assembly, three fixed tables are fixedly mounted on one side of the top end of the top cover, high-voltage terminals are arranged at the top ends of the fixed tables, three low-voltage terminals are arranged on the other side of the top end of the top cover, a pressure release valve is movably mounted at the top end of the top cover, an oil conservator assembly is fixedly mounted at the top end of the top cover, two bases are fixedly mounted at the bottom end of the transformer assembly, and a grounding wire is fixedly mounted at the bottom end of the transformer assembly;
the transformer assembly comprises an oil tank, a heat dissipation plate, ventilation holes, a pressure relief pipe, a ventilation grid and heat dissipation fans, wherein two ventilation grids are fixedly installed on the rear side surface of the oil tank;
the conservator subassembly includes conservator, defeated oil pipe, fuel delivery pump, bracing piece, oil level gaugember, the bottom fixed mounting of conservator has defeated oil pipe, defeated oil pipe's fixed surface installs the fuel delivery pump, the equal fixed mounting in bottom both sides of conservator has the bracing piece, the rear side fixed mounting of conservator has the oil level gaugember, the positive side surface of conservator is equipped with the oil filler point.
Preferably, the iron core assembly comprises a lower iron yoke, an iron core, an upper iron yoke, lead wires, insulating plates, fixing rods, windings, a sealing ring, a pressing block, an outer pressing block groove, an inner upper iron yoke groove, a spring plunger, a first compression spring, a second compression spring, a limiting buckle and an upper iron yoke bottom groove, wherein three iron cores are fixedly arranged at the top end of the lower iron yoke, the upper iron yoke is fixedly connected with the top end of the iron core in a clamping manner, two insulating plates are movably arranged at the bottom end of the upper iron yoke, six lead wires are arranged at the top end of the upper iron yoke, a plurality of fixing rods are fixedly arranged at the bottom end of the upper iron yoke, the windings are arranged on the outer side surfaces of the iron cores, the sealing ring is movably arranged on the surfaces of the fixing rods, three upper iron yoke bottom grooves are arranged at the bottom end of the upper iron yoke, the top ends of the iron cores are clamped into the inner iron yoke bottom groove, and four outer pressing block grooves are arranged in the upper iron yoke bottom groove, the inside of briquetting water jacket all is equipped with the briquetting inside groove, the inside of briquetting inside groove all is equipped with indisputable yoke inside groove, the equal movable mounting in inside of briquetting water jacket has the briquetting, the equal fixed mounting in inboard surface of briquetting has spring plunger, spring plunger all blocks the inside of briquetting inside groove, the equal fixed mounting in inboard surface of spring plunger has spacing knot, the inside of indisputable yoke inside groove is gone into to the equal card of spacing knot, the inside of briquetting inside groove all is equipped with first compression spring, the inside of going up indisputable yoke inside groove all is equipped with a plurality of second compression spring.
Preferably, the spring plunger is clamped in the first compression spring, and the inner side surface of the limit buckle is attached to the surface of the second compression spring.
Preferably, the surface of the pressing block is attached to the surface of the sealing ring.
Preferably, the oil delivery pipe is clamped into the oil tank, and the pressure relief pipe is clamped into the pressure relief valve.
Preferably, the lead wires are electrically connected with the high-voltage terminal and the low-voltage terminal, and the top ends of the sealing rings are clamped in the bottom groove of the upper iron yoke.
Preferably, the bottom end of the upper iron yoke is welded and connected with the top end surface of the top cover.
Preferably, the surface of the sealing ring is provided with a through hole, and the fixing rods are clamped into the through holes.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the oil tank, the oil in the oil tank cannot enter the iron core through the sealing ring, so that the phenomenon that the oil flows into a gap between the iron core and the upper iron yoke when the oil tank is assembled in the using process of the oil tank is avoided, and accidents happen to the iron core when the oil tank is used;
through the matching of the pressing block and the first compression spring, the pressing block can be tightly attached to the surface of the iron core on the surface of the sealing ring through the extrusion of the first compression spring and the second compression spring, so that the possibility of oil leakage is further reduced, and accidents are prevented;
make the device when dismantling the maintenance through spacing knot, can make the briquetting can not pop out the device because of first compression spring's extrusion, lead to device spare part impaired and unable use, make things convenient for the device to carry out the dismouting.
2. According to the invention, by installing the plurality of heat dissipation plates and the plurality of air vents on the outer surface of the oil tank, the flowing speed of air can be increased through the air vents, and the heat dissipation efficiency of the device is further increased; when the device is in use, the rear side surface is usually close to a wall surface or a column body, so that the ventilation area is small, the ventilation grille and the cooling fan are matched, the air flow of the rear side surface of the device is improved, and the internal parts are prevented from being burnt due to temperature concentration.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a cross-sectional elevation view of the invention in its entirety;
FIG. 3 is a rear elevational view of the invention as a whole;
FIG. 4 is a cross-sectional side view of the sealing ring of the present invention;
FIG. 5 is a cross-sectional top view of the sealing ring of the present invention;
FIG. 6 is a cross-sectional top view of a compact of the present invention.
In the figure: 1. a transformer assembly; 101. an oil tank; 102. a heat dissipation plate; 103. a vent hole; 104. a pressure relief pipe; 105. a ventilation grille; 106. a heat radiation fan; 2. a top cover; 3. a conservator assembly; 301. an oil conservator; 302. an oil delivery pipe; 303. an oil transfer pump; 304. a support bar; 305. an oil level gauge; 4. a base; 5. an iron core assembly; 501. a lower iron yoke; 502. an iron core; 503. an upper iron yoke; 504. connecting a lead; 505. an insulating plate; 506. fixing the rod; 507. a winding; 508. sealing the circular ring; 509. briquetting; 510. a briquetting outer groove; 511. pressing an inner groove; 512. an inner groove of the upper iron yoke; 513. a spring plunger; 514. a first compression spring; 515. a second compression spring; 516. a limit buckle; 517. an upper iron yoke bottom groove; 6. a pressure relief valve; 7. a fixed table; 8. a high voltage terminal; 9. a low voltage terminal; 10. and a ground line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 6, an embodiment of the present invention includes: the utility model provides an oil-immersed explosion-proof transformer, including transformer subassembly 1, transformer subassembly 1's inside movable mounting has iron core subassembly 5, transformer subassembly 1's top movable mounting has top cap 2, top one side fixed mounting of top cap 2 has three fixed station 7, the top of fixed station 7 all is equipped with high voltage terminal 8, top cap 2's top opposite side is equipped with three low voltage terminal 9, top movable mounting of top cap 2 has relief valve 6, top fixed mounting of top cap 2 has conservator subassembly 3, transformer subassembly 1's bottom fixed mounting has two bases 4, transformer subassembly 1's bottom fixed mounting has earth connection 10.
Further, the transformer assembly 1 comprises an oil tank 101, a heat dissipation plate 102, ventilation holes 103, a pressure relief pipe 104, a ventilation grille 105 and a heat dissipation fan 106, wherein two ventilation grills 105 are fixedly installed on the rear side surface of the oil tank 101, two heat dissipation fans 106 are movably installed inside the ventilation grills 105, a plurality of heat dissipation plates 102 are fixedly installed on the rest three side surfaces of the oil tank 101, a plurality of ventilation holes 103 are arranged on the surface of each heat dissipation plate 102, the pressure relief pipe 104 is fixedly installed at the top end of the oil tank 101, the air flow of the rear side surface of the device is improved through the matching of the ventilation grills 105 and the heat dissipation fans 106, and internal parts are prevented from being burnt out due to temperature concentration.
Further, the conservator component 3 comprises an conservator 301, an oil delivery pipe 302, an oil delivery pump 303, a support rod 304 and an oil level gauge 305, the oil delivery pipe 302 is fixedly installed at the bottom end of the conservator 301, the oil delivery pump 303 is fixedly installed on the surface of the oil delivery pipe 302, the support rod 304 is fixedly installed on two sides of the bottom end of the conservator 301, the oil level gauge 305 is fixedly installed on the rear side surface of the conservator 301, an oil filling hole is formed in the front side surface of the conservator 301, the inside of the oil tank 101 can be kept in a full oil state all the time through the conservator 301, and the stability of the device is improved.
Further, the iron core assembly 5 comprises a lower iron yoke 501, an iron core 502, an upper iron yoke 503, lead wires 504, insulating plates 505, fixing rods 506, windings 507, a sealing ring 508, a pressing block 509, a pressing block outer groove 510, a pressing block inner groove 511, an upper iron yoke inner groove 512, a spring plunger 513, a first compression spring 514, a second compression spring 515, a limit buckle 516 and an upper iron yoke bottom groove 517, wherein three iron cores 502 are fixedly arranged at the top end of the lower iron yoke 501, the top end of the iron core 502 is fixedly clamped with the upper iron yoke 503, two insulating plates 505 are movably arranged at the bottom end of the upper iron yoke 503, six lead wires 504 are arranged at the top end of the upper iron yoke 503, a plurality of fixing rods 506 are fixedly arranged at the bottom end of the upper iron yoke 503, the windings 507 are arranged on the outer side surface of the iron core 502, the sealing ring 508 is movably arranged on the surface of the fixing rods 506, three upper iron yoke bottom grooves 517 are arranged at the bottom end of the upper iron yoke 503, the top end of the iron core 502 is clamped into the upper yoke 517, four pressing block outer grooves 510 are respectively arranged inside the upper iron yoke bottom grooves 517, pressing block inner grooves 511 are respectively arranged inside the pressing block outer grooves 510, upper iron yoke inner grooves 512 are respectively arranged inside the pressing block inner grooves 511, pressing blocks 509 are respectively movably arranged inside the pressing block outer grooves 510, spring plungers 513 are respectively fixedly arranged on the inner side surfaces of the pressing blocks 509, the spring plungers 513 are respectively clamped inside the pressing block inner grooves 511, limit buckles 516 are respectively fixedly arranged on the inner side surfaces of the spring plungers 513, the limit buckles 516 are respectively clamped inside the upper iron yoke inner grooves 512, first compression springs 514 are respectively arranged inside the pressing block inner grooves 511, a plurality of second compression springs 515 are respectively arranged inside the upper iron yoke inner grooves 512, by the cooperation of the pressing block 509 and the first compression spring 514, the pressing block 509 on the surface of the sealing ring 508 can press the sealing ring 508 against the surface of the iron core 502 by the pressing of the first compression spring 514 and the second compression spring 515, and the possibility of oil leakage is further reduced.
Further, the spring plungers 513 are all clipped into the interior of the first compression spring 514, and the inside surfaces of the position-limiting buttons 516 are all attached to the surface of the second compression spring 515.
Further, the surfaces of the pressing blocks 509 are all attached to the surface of the sealing ring 508.
Further, the oil delivery pipe 302 is clamped in the oil tank 101, the pressure relief pipe 104 is clamped in the pressure relief valve 6, the pressure in the oil tank 101 is controlled through the pressure relief valve 6, and accidents caused by overhigh pressure are prevented.
Further, the lead wires 504 are electrically connected to the high-voltage terminal 8 and the low-voltage terminal 9, and the top ends of the seal rings 508 are fitted into the bottom grooves 517 of the upper iron yokes.
Further, the bottom end of the upper yoke 503 is welded to the top end surface of the top cover 2.
Further, the surface of the sealing ring 508 is provided with a through hole, the fixing rod 506 is clamped into the through hole, and the sealing ring 508 can be simply dismounted to be maintained when the device is dismounted through the through hole.
When the oil tank is used, oil in the oil tank 101 cannot enter the iron core 502 through the sealing ring 508, so that oil is prevented from flowing into a gap between the iron core 502 and the upper iron yoke 503 when the oil tank is assembled in the using process of the oil tank, and accidents happen to the iron core 502 when the oil tank is used; through the cooperation of the pressing block 509 and the first compression spring 514, the pressing block 509 can enable the sealing ring 508 to be tightly attached to the surface of the iron core 502 on the surface of the sealing ring 508 through the extrusion of the first compression spring 514 and the second compression spring 515, the possibility of oil leakage is further reduced, and accidents are prevented;
when the device is disassembled and maintained through the limit buckle 516, the pressing block 509 cannot be ejected out of the device due to extrusion of the first compression spring 514, so that parts of the device are damaged and cannot be used, and the device is convenient to disassemble and assemble. When the device is used, the rear side surface is usually close to a wall surface or a column, so that the ventilation area is small, and the ventilation grille 105 and the heat dissipation fan 106 are matched, so that the air flow on the rear side surface of the device is improved, and the internal parts are prevented from being burnt due to temperature concentration.
Claims (5)
1. The utility model provides an explosion-proof transformer of oil-immersed, includes transformer subassembly (1), its characterized in that: the transformer assembly is characterized in that an iron core assembly (5) is movably mounted inside the transformer assembly (1), a top cover (2) is movably mounted at the top end of the transformer assembly (1), three fixed tables (7) are fixedly mounted on one side of the top end of the top cover (2), high-voltage terminals (8) are arranged at the top ends of the fixed tables (7), three low-voltage terminals (9) are arranged on the other side of the top end of the top cover (2), a pressure release valve (6) is movably mounted at the top end of the top cover (2), an oil conservator assembly (3) is fixedly mounted at the top end of the top cover (2), two bases (4) are fixedly mounted at the bottom end of the transformer assembly (1), and a grounding wire (10) is fixedly mounted at the bottom end of the transformer assembly (1);
the transformer assembly (1) comprises an oil tank (101), a heat dissipation plate (102), vent holes (103), a pressure relief pipe (104), a ventilation grid (105) and heat dissipation fans (106), wherein two ventilation grids (105) are fixedly mounted on the rear side surface of the oil tank (101), two heat dissipation fans (106) are movably mounted inside the ventilation grids (105), a plurality of heat dissipation plates (102) are fixedly mounted on the rest three side surfaces of the oil tank (101), the surfaces of the heat dissipation plates (102) are provided with the vent holes (103), and the pressure relief pipe (104) is fixedly mounted at the top end of the oil tank (101);
the oil conservator assembly (3) comprises an oil conservator (301), an oil conveying pipe (302), an oil conveying pump (303), a supporting rod (304) and an oil level indicator (305), wherein the oil conveying pipe (302) is fixedly installed at the bottom end of the oil conservator (301), the oil conveying pump (303) is fixedly installed on the surface of the oil conveying pipe (302), the supporting rod (304) is fixedly installed on each of two sides of the bottom end of the oil conservator (301), the oil level indicator (305) is fixedly installed on the rear side surface of the oil conservator (301), and an oil filling hole is formed in the front side surface of the oil conservator (301);
the iron core assembly (5) comprises a lower iron yoke (501), an iron core (502), an upper iron yoke (503), a lead wire (504), an insulating plate (505), a fixing rod (506), a winding (507), a sealing ring (508), a pressing block (509), a pressing block outer groove (510), a pressing block inner groove (511), an upper iron yoke inner groove (512), a spring plunger (513), a first compression spring (514), a second compression spring (515), a limiting buckle (516) and an upper iron yoke bottom groove (517);
the top fixed mounting of lower yoke (501) has three iron core (502), the top joint of iron core (502) is fixed with yoke (503), the bottom movable mounting of going up yoke (503) has two insulation boards (505), the top of going up yoke (503) is equipped with six and connects lead wire (504), the bottom fixed mounting of going up yoke (503) has a plurality of dead levers (506), the outside surface of iron core (502) all is equipped with winding (507), the equal movable mounting in surface of dead lever (506) has sealed ring (508), the bottom of going up yoke (503) is equipped with three yoke kerve (517), the inside of going up yoke kerve (517) is all gone into to the top of iron core (502), the inside of going up yoke kerve (517) all is equipped with four briquetting outer grooves (510), the inside of briquetting outer groove (510) all is equipped with briquetting inner groove (511), the inner part of the pressing block inner groove (511) is provided with an upper iron yoke inner groove (512), the inner part of the pressing block outer groove (510) is movably provided with a pressing block (509), the inner side surface of the pressing block (509) is fixedly provided with a spring plunger (513), the spring plunger (513) is clamped into the pressing block inner groove (511), the inner side surface of the spring plunger (513) is fixedly provided with a limit buckle (516), the limit buckle (516) is clamped into the upper iron yoke inner groove (512), the inner part of the pressing block inner groove (511) is provided with a first compression spring (514), and the inner part of the upper iron yoke inner groove (512) is provided with a plurality of second compression springs (515);
the spring plungers (513) are clamped into the first compression spring (514), and the inner side surfaces of the limit buttons (516) are attached to the surface of the second compression spring (515);
the surfaces of the pressing blocks (509) are attached to the surface of the sealing ring (508); the pressing block (509) is matched with the first compression spring (514), so that the pressing block (509) can press the sealing ring (508) against the surface of the iron core (502) on the surface of the sealing ring (508) through the compression of the first compression spring (514) and the second compression spring (515).
2. The oil-immersed explosion-proof transformer of claim 1, wherein: the oil delivery pipe (302) is clamped into the oil tank (101), and the pressure relief pipe (104) is clamped into the pressure relief valve (6).
3. The oil-immersed explosion-proof transformer of claim 1, wherein: the lead wires (504) are electrically connected with the high-voltage terminal (8) and the low-voltage terminal (9), and the top ends of the sealing circular rings (508) are clamped into the bottom groove (517) of the upper iron yoke.
4. The oil-immersed explosion-proof transformer of claim 1, wherein: the bottom end of the upper iron yoke (503) is connected with the top end surface of the top cover (2) in a welding mode.
5. The oil-immersed explosion-proof transformer of claim 1, wherein: the surface of the sealing ring (508) is provided with a through hole, and the fixing rods (506) are clamped into the through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111168655.6A CN113593839B (en) | 2021-10-08 | 2021-10-08 | Oil-immersed explosion-proof transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111168655.6A CN113593839B (en) | 2021-10-08 | 2021-10-08 | Oil-immersed explosion-proof transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113593839A CN113593839A (en) | 2021-11-02 |
| CN113593839B true CN113593839B (en) | 2021-12-14 |
Family
ID=78242939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111168655.6A Active CN113593839B (en) | 2021-10-08 | 2021-10-08 | Oil-immersed explosion-proof transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113593839B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114093636B (en) * | 2022-01-20 | 2022-04-12 | 江苏悦成变压器有限公司 | Energy-saving environment-friendly ultrahigh-voltage power transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581009A (en) * | 2019-09-23 | 2019-12-17 | 载宇(湖北)电气科技有限公司 | Power transformer with good heat dissipation performance and capable of avoiding water tank damage |
| CN111261379A (en) * | 2020-03-31 | 2020-06-09 | 姜老报 | Resin insulation dry-type isolation transformer |
| CN111354537A (en) * | 2018-12-20 | 2020-06-30 | 徐州鑫通电力设备有限公司 | Convenient removal heat dissipation box of transformer |
| CN112530672A (en) * | 2020-11-24 | 2021-03-19 | 国网山东省电力公司烟台供电公司 | Oil mass compensation type transformer |
| CN213519501U (en) * | 2020-12-09 | 2021-06-22 | 申电电气有限公司 | Oil-immersed power transformer |
-
2021
- 2021-10-08 CN CN202111168655.6A patent/CN113593839B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111354537A (en) * | 2018-12-20 | 2020-06-30 | 徐州鑫通电力设备有限公司 | Convenient removal heat dissipation box of transformer |
| CN110581009A (en) * | 2019-09-23 | 2019-12-17 | 载宇(湖北)电气科技有限公司 | Power transformer with good heat dissipation performance and capable of avoiding water tank damage |
| CN111261379A (en) * | 2020-03-31 | 2020-06-09 | 姜老报 | Resin insulation dry-type isolation transformer |
| CN112530672A (en) * | 2020-11-24 | 2021-03-19 | 国网山东省电力公司烟台供电公司 | Oil mass compensation type transformer |
| CN213519501U (en) * | 2020-12-09 | 2021-06-22 | 申电电气有限公司 | Oil-immersed power transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113593839A (en) | 2021-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113593839B (en) | Oil-immersed explosion-proof transformer | |
| CN110581009A (en) | Power transformer with good heat dissipation performance and capable of avoiding water tank damage | |
| CN202855498U (en) | Amorphous alloy oil immersed type transformer | |
| CN204178907U (en) | A kind of oil immersed type testing transformer | |
| CN108597762A (en) | Novel horizontal type dry power transformer | |
| CN105761898A (en) | Single-phase iron-core energy taking reactor for staged controllable parallel reactor device | |
| CN217086320U (en) | Oil-immersed high-efficiency heat dissipation type transformer core | |
| CN215815473U (en) | Outdoor mutual inductor convenient to installation | |
| CN202855478U (en) | Low-voltage and high-current high frequency transformer | |
| CN214897897U (en) | Locate 5G communication base station power supply on transmission tower and use transformer | |
| CN213277693U (en) | Burnout prevention device of oil-immersed high-voltage transformer | |
| CN205881654U (en) | Oil -immersed transformer's installation of novel winding and cooling structure | |
| CN208189349U (en) | A kind of novel horizontal type dry power transformer | |
| CN204834513U (en) | Energy -saving big power relay | |
| CN204966232U (en) | Energy -efficient type metallic glass power transformer | |
| CN201149800Y (en) | Double body structure of reactor | |
| CN210640112U (en) | SF6 gas insulation current transformer universal wiring board structure | |
| CN208093356U (en) | A kind of current transformer being easily installed | |
| CN220290571U (en) | Encapsulation patch type driving transformer | |
| CN219591215U (en) | Oil leakage-proof transformer | |
| CN217719211U (en) | Safety equipment for power transformer | |
| CN219575339U (en) | Transformer heat dissipation oil storage structure | |
| CN216818048U (en) | Vehicle-mounted movable transformer | |
| CN208126985U (en) | Oil-immersed full-sealed high-efficient low-noise transformer | |
| CN213339946U (en) | Dry-type discharge coil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |