CN114300224A - Dry-type lightning protection power transformer - Google Patents
Dry-type lightning protection power transformer Download PDFInfo
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- CN114300224A CN114300224A CN202111510817.XA CN202111510817A CN114300224A CN 114300224 A CN114300224 A CN 114300224A CN 202111510817 A CN202111510817 A CN 202111510817A CN 114300224 A CN114300224 A CN 114300224A
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- air
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- storage disc
- lightning protection
- dry
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- 238000001816 cooling Methods 0.000 claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000000712 assembly Effects 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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Abstract
The invention relates to electrical equipment, in particular to a dry-type lightning protection power transformer.A base is symmetrically provided with two groups of air cooling assemblies along the length direction of the base, the bottom of a shell is provided with a plurality of air cooling ports along the circumference at equal intervals, a circumferential air supply assembly which is in sealing fit with the bottom of the shell is rotatably arranged below the shell, and the circumferential air supply assembly is connected with one group of the air cooling assemblies through a transmission mechanism; the circumferential air supply assembly pumps air into the shell along the circumferential direction, so that the caliber is small, the airflow speed is high, the convection heat exchange rate of the air is favorably improved, and the requirement on the power of the fan is high; because circumference air supply subassembly is from the circumference to the casing internal air supply, consequently can guarantee that each position heat dissipation in the casing is more even, compares in traditional dry-type transformer directly with the air pump in to the casing, the heat dissipation homogeneity is better.
Description
Technical Field
The invention relates to power equipment, in particular to a dry-type lightning protection power transformer.
Background
The dry type transformer comprises an open type transformer, a closed type transformer and a pouring type transformer, wherein the open type transformer is a common form, a transformer body of the open type transformer is in direct contact with the atmosphere, the open type transformer is suitable for a relatively dry and clean room (the relative humidity is not more than 85% when the ambient temperature is 20 ℃), and two cooling modes of air self-cooling and air cooling are generally adopted.
Two cooling methods for dry-type transformers are natural air cooling (AN) and forced air cooling (AF). During natural air cooling, the transformer can continuously operate for a long time under the rated capacity. When forced air cooling is carried out, the output capacity of the transformer can be improved by 50 percent. The device is suitable for intermittent overload operation or emergency accident overload operation.
The existing dry-type lightning protection transformer directly pumps cold air in the environment into the shell, and because the aperture of the airflow channel is large, the power requirement of a fan is high, and the uniformity of heat dissipation is poor.
Disclosure of Invention
The present invention is directed to a dry lightning protection power transformer, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a dry-type lightning protection power transformer comprises a base and a cushion block fixedly arranged on the base; a plurality of shells are equidistantly arranged on the cushion block along the length direction of the cushion block, upper iron yokes are arranged on the upper portions of the shells, the upper iron yokes are fixed through clamping plates arranged on two sides of the upper iron yokes, high-voltage terminals are arranged on the clamping plates, and the high-voltage terminals are connected with the interiors of the shells through high-voltage connecting rods;
two groups of air cooling assemblies are symmetrically arranged on two sides of the base along the length direction of the base, a plurality of air cooling ports are formed in the bottom of the shell at equal intervals along the circumference, a circumferential air supply assembly which is hermetically attached to the bottom of the shell is rotatably arranged below the shell, and the circumferential air supply assembly is connected with one group of the air cooling assemblies through a transmission mechanism;
when the air cooling assembly works, the ambient atmosphere is sent into the circumferential air supply assembly, the air cooling assembly drives the circumferential air supply assembly to rotate around the lower part of the shell through the transmission mechanism, and the air in the circumferential air supply assembly is discharged into the shell in the circumferential direction.
The invention further defines the scheme as follows: the air cooling assembly comprises a plurality of fans arranged on the side wall of the cushion block, the fans located on the same side of the cushion block are connected through a rotating shaft, a motor is arranged at the end part of one fan close to the edge, and the output end of the motor is connected with a fan shaft close to the motor.
The invention also provides a scheme as follows: the motor is fixedly installed on the base through a support, the fan is provided with a shell, an air inlet pipe communicated with the interior of the shell is arranged at one end of the shell, an air outlet pipe is arranged at the other end of the shell, and the air outlet pipe is communicated with the circumferential air supply assembly.
The invention also provides a scheme as follows: the circumferential air supply assembly comprises an annular air storage disc coaxially and rotatably arranged below the shell, and a rubber pad which is in sealing fit with the lower surface of the shell is fixed on the annular air storage disc;
the annular air storage disc is connected with the transmission mechanism, round holes are formed in the annular air storage disc and the rubber pad, the round holes in the annular air storage disc and the rubber pad are concentric, and the round holes correspond to the air cooling opening in the bottom of the shell.
The invention also provides a scheme as follows: the air outlet pipe is communicated with the air holes, and the sealing ring is installed on the cushion block through a fixing frame.
The invention also provides a scheme as follows: the transmission mechanism comprises an output shaft rotatably mounted on the cushion block, a bevel gear structure connecting the output shaft with a rotating shaft in one group of air cooling assemblies, and a meshing structure connecting the output shaft with the annular air storage disc;
the output shaft is arranged between two adjacent shells.
The invention also provides a scheme as follows: the bevel gear structure comprises a first bevel gear fixed on the rotating shaft, a driven shaft rotatably installed on the base, a second bevel gear fixed on the driven shaft and meshed with the first bevel gear, and a transmission belt connected with the driven shaft and the output shaft.
The invention also provides a scheme as follows: the meshing structure comprises a pinion fixed on the output shaft and an outer gear ring fixed on the outer wall of the annular gas storage disc and meshed with the pinion, and the pinion between two adjacent shells is meshed with the outer gear rings below the two shells.
The invention also provides a scheme as follows: rectangular notches are formed in four corners of the base, and each notch is rotatably provided with a bidirectional roller.
The invention also provides a scheme as follows: the cushion block is rotatably provided with a plurality of supporting wheels which are distributed along the circumference, and the upper parts of the supporting wheels are in rolling fit with the lower surface of the annular air storage disc.
Compared with the prior art, the invention has the beneficial effects that: although the existing dry-type lightning protection transformer is also provided with a fan, the fan directly pumps cold air in the environment into the shell, and the power requirement of the fan is higher because the aperture of the airflow channel is larger;
the circumferential air supply assembly arranged in the invention pumps air into the shell along the circumferential direction, so the caliber is smaller, the airflow speed is higher, the convection heat exchange rate of air is favorably improved, and the requirement on the power of the fan is higher;
in addition, because circumference air supply subassembly is from the circumference to the casing internal air supply, consequently can guarantee that each position heat dissipation in the casing is more even, compares in traditional dry-type transformer directly with the air pump in to the casing, the heat dissipation homogeneity is better.
Drawings
Fig. 1 is a schematic structural diagram of a dry lightning protection power transformer.
Fig. 2 is an exploded view of one of the housings and the circumferential air delivery assembly in the dry lightning protection power transformer.
Fig. 3 is a schematic view of fig. 2 from another view angle.
Fig. 4 is a schematic structural diagram of the dry lightning protection power transformer with the casing and the circumferential air supply assembly removed.
Fig. 5 is a back structure display view of fig. 4.
Fig. 6 is a partially enlarged view of a portion a in fig. 5.
In the figure: 1-a base; 2-cushion block; 3-a shell; 4-upper yoke; 5-clamping plate; 6-high pressure connecting rod; 7-a high voltage terminal; 8-a motor; 9-a fan; 10-a rotating shaft; 11-a first bevel gear; 12-a second bevel gear; 13-a driven shaft; 14-a transmission belt; 15-an output shaft; 16-pinion gear; 17-air cooling port; 18-an air inlet pipe; 19-bidirectional rollers; 20-an air outlet pipe; 21-a sealing ring; 22-a holder; 23-annular gas storage disks; 24-rubber pad; 25-outer gear ring; 26-riding wheels.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 to 6, as an embodiment of the present invention, the dry lightning protection power transformer includes a base 1 and a pad 2 fixedly mounted on the base 1; a plurality of shells 3 are equidistantly arranged on the cushion block 2 along the length direction of the cushion block, upper iron yokes 4 are arranged on the upper portions of the shells 3, the upper iron yokes 4 are fixed through clamping plates 5 arranged on two sides of the upper iron yokes 4, high-voltage terminals 7 are mounted on the clamping plates 5, and the high-voltage terminals 7 are connected with the interiors of the shells 3 through high-voltage connecting rods 6;
two groups of air cooling assemblies are symmetrically arranged on two sides of the base 1 along the length direction of the base, a plurality of air cooling ports 17 are formed in the bottom of the shell 3 at equal intervals along the circumference, a circumferential air supply assembly which is in sealing fit with the bottom of the shell 3 is rotatably arranged below the shell 3, and the circumferential air supply assembly is connected with one group of the air cooling assemblies through a transmission mechanism;
when the air cooling assembly works, the ambient atmosphere is sent into the circumferential air supply assembly, the air cooling assembly drives the circumferential air supply assembly to rotate around the lower part of the shell 3 through the transmission mechanism, and the air in the circumferential air supply assembly is discharged into the shell 3 along the circumferential direction.
In the embodiment, although the existing dry-type lightning protection transformer is also provided with the fan, the fan directly pumps cold air in the environment into the shell, and the power requirement of the fan is higher due to the larger aperture of the airflow channel;
the circumferential air supply assembly arranged in the invention pumps air into the shell 3 along the circumferential direction, so the caliber is smaller, the airflow speed is higher, the convection heat exchange rate of air is favorably improved, and the requirement on the power of a fan is higher;
in addition, because circumference air supply assembly is from the circumference to casing 3 internal air supply, consequently can guarantee that each position heat dissipation in the casing is more even, compares in traditional dry-type transformer directly with the air pump in to the casing, the heat dissipation homogeneity is better.
As another embodiment of the invention, the air cooling assembly comprises a plurality of fans 9 mounted on the side wall of the cushion block 2, the fans 9 on the same side of the cushion block 2 are connected through a rotating shaft 10, a motor 8 is arranged at the end of one fan 9 close to the edge, and the output end of the motor 8 is connected with the shaft of the fan 9 adjacent to the motor 8;
specifically, the motor 8 is fixedly mounted on the base 1 through a support, the fan 9 is provided with a shell, one end of the shell is provided with an air inlet pipe 18 communicated with the inside of the shell, the other end of the shell is provided with an air outlet pipe 20, and the air outlet pipe 20 is communicated with the circumferential air supply assembly.
In this embodiment, when the motor 8 on one side operates, the fan 9 adjacent to the motor can be driven to operate, and the fan 9 transmits the torque output by the motor 8 one by the aid of the rotating shaft 10, so that the fans 9 on the same side operate simultaneously to supply air and cool the interiors of the housings 3 on the base 1.
As another embodiment of the present invention, the circumferential air supply assembly includes an annular air storage disc 23 coaxially and rotatably disposed below the housing 3, and a rubber pad 24 sealingly attached to the lower surface of the housing 3 is fixed on the annular air storage disc 23;
the annular air storage disc 23 is connected with the transmission mechanism, round holes are formed in the annular air storage disc 23 and the rubber pad 24 respectively, and the annular air storage disc 23 and the round holes in the rubber pad 24 are concentric and correspond to the air cooling port 17 in the bottom of the shell 3.
In this embodiment, when the transmission mechanism drives the annular air storage disc 23 and the rubber pad 24 to rotate, the circular holes of the annular air storage disc 23 and the rubber pad 24 are aligned with the air cooling ports 17 at the bottom of the housing 3 one by one along the circumference, so that the air in the annular air storage disc 23 is sent into the housing 3.
As another embodiment of the present invention, a plurality of air holes are equidistantly formed along the circumference on the outer wall of the annular air storage disc 23, a sealing ring 21 is sealingly and rotatably sleeved on the outer periphery of the annular air storage disc 23, an air hole corresponding to the air hole is formed on the sealing ring 21, the air outlet pipe 20 is communicated with the air hole, and the sealing ring 21 is mounted on the cushion block 2 through a fixing frame 22.
In this embodiment, the air outlet pipe 20 is communicated with the air holes, so that when the annular air storage disc 23 rotates, the air holes on the outer periphery of the annular air storage disc can correspond to the air holes on the sealing ring 21 one by one, and the air in the fan 9 can be smoothly and uninterruptedly sent into the annular air storage disc 23.
As another embodiment of the present invention, the transmission mechanism includes an output shaft 15 rotatably mounted on the cushion block 2, a bevel gear structure connecting the output shaft 15 and the rotating shaft 10 in one of the air-cooling assemblies, and a meshing structure connecting the output shaft 15 and the annular air storage disc 23;
the output shaft 15 is disposed between two adjacent housings 3.
In this embodiment, when the air cooling assembly works, the rotating shaft 10 drives the bevel gear structure to move, so as to drive the output shaft 15 to rotate, and the rotating output shaft 15 drives the annular air storage disc 23 adjacent to the output shaft 15 to rotate by means of the meshing structure, so that air sent into the annular air storage disc 23 by the fan 9 is sent into the housing 3 one by one along the circumferential direction, and the inside of the housing 3 is uniformly cooled.
As still another embodiment of the present invention, the bevel gear structure includes a first bevel gear 11 fixed to the rotating shaft 10, a driven shaft 13 rotatably mounted on the base 1, a second bevel gear 12 fixed to the driven shaft 13 and engaged with the first bevel gear 11, and a transmission belt 14 connecting the driven shaft 13 and the output shaft 15.
In this embodiment, when the rotating shaft 10 rotates, the first bevel gear 11 is driven to rotate, the rotating first bevel gear 11 drives the second bevel gear 12 and the driven shaft 13 to rotate, the driven shaft 13 drives the output shaft 15 to rotate by using the transmission belt 14, and finally the annular gas storage disc 23 and the rubber pad 24 adjacent to the output shaft 15 are driven to rotate by the meshing structure.
As still another embodiment of the present invention, the gear structure includes a pinion 16 fixed to the output shaft 15 and an outer ring gear 25 fixed to an outer wall of the annular air reserving disk 23 and engaged with the pinion 16.
In this embodiment, it should be noted that the pinion 16 between two adjacent housings 3 is meshed with the outer gear rings 25 below two housings 3, so that only one pinion 16 rotates to drive the outer gear rings 25 below the plurality of housings 3 to rotate at the same speed, thereby achieving the effect of linking the plurality of outer gear rings.
As another embodiment of the present invention, rectangular notches are formed at four corners of the base 1, and a bidirectional roller 19 is rotatably mounted on each notch.
In this embodiment, the movement of the whole transformer, or the transport over a short distance, is facilitated by the provision of bidirectional rollers 19.
As still another embodiment of the present invention, in order to prevent the annular air storage disk 23 and the rubber pad 24 from moving downward by gravity, a gap is generated between the rubber pad 24 and the lower surface of the housing 3;
riding wheels 26 are rotatably mounted on the cushion block 2, the riding wheels 26 are distributed along the circumference, and the upper parts of the riding wheels 26 are in rolling fit with the lower surface of the annular air storage disc 23.
In this embodiment, the rubber pad 24 is kept tightly attached to the lower surface of the housing 3 by the idler 26, so as to prevent a gap from being formed therebetween, and air exhausted from the circular hole flows back to the environment through the gap, and does not enter or less enters the inside of the housing 3.
When the motor 8 at one side works, the fan 9 close to the motor can be driven to work, and the fan 9 transfers the torque output by the motor 8 one by the aid of the rotating shaft 10, so that the fans 9 at the same side work simultaneously to supply air and cool the interiors of the shells 3 on the base 1; when the transmission mechanism drives the annular air storage disc 23 and the rubber pad 24 to rotate, the circular holes on the annular air storage disc 23 and the rubber pad 24 are aligned with the air cooling port 17 at the bottom of the shell 3 one by one along the circumference, so that the air in the annular air storage disc 23 is sent into the shell 3; the air outlet pipe 20 is communicated with the air holes, so that when the annular air storage disc 23 rotates, the air holes on the periphery of the annular air storage disc can correspond to the air holes on the sealing ring 21 one by one, and air in the fan 9 is smoothly and uninterruptedly sent into the annular air storage disc 23; when the air cooling assembly works, the bevel gear structure is driven to act through the rotating shaft 10, so that the output shaft 15 is driven to rotate, the rotating output shaft 15 drives the annular air storage disc 23 adjacent to the output shaft 15 to rotate through the meshing structure, air sent into the annular air storage disc 23 by the fan 9 is sent into the shell 3 one by one along the circumferential direction, and the inside of the shell 3 is uniformly cooled; when the rotating shaft 10 rotates, the first bevel gear 11 can be driven to rotate, the rotating first bevel gear 11 drives the second bevel gear 12 and the driven shaft 13 to rotate, the driven shaft 13 drives the output shaft 15 to rotate by using the transmission belt 14, and finally the annular gas storage disc 23 and the rubber pad 24 adjacent to the output shaft 15 are driven to rotate through a meshing structure; the idler 26 can keep the rubber pad 24 tightly attached to the lower surface of the housing 3 all the time, and prevent a gap from being generated between the rubber pad and the lower surface, so that air exhausted from the circular hole flows back to the environment through the gap and does not enter or enter the inside of the housing 3 in a reduced way.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A dry-type lightning protection power transformer comprises a base (1) and a cushion block (2) fixedly installed on the base (1), and is characterized in that a plurality of shells (3) are equidistantly arranged on the cushion block (2) along the length direction of the cushion block, an upper iron yoke (4) is arranged on the upper portion of each shell (3), the upper iron yokes (4) are fixed through clamping plates (5) arranged on two sides of each upper iron yoke, high-voltage terminals (7) are installed on the clamping plates (5), and the high-voltage terminals (7) are connected with the interiors of the shells (3) through high-voltage connecting rods (6);
two groups of air cooling assemblies are symmetrically arranged on two sides of the base (1) along the length direction of the base, a plurality of air cooling ports (17) are formed in the bottom of the shell (3) at equal intervals along the circumference, a circumferential air supply assembly which is in sealing fit with the bottom of the shell (3) is rotatably arranged below the shell, and the circumferential air supply assembly is connected with one group of air cooling assemblies through a transmission mechanism;
when the air cooling assembly works, the ambient atmosphere is sent into the circumferential air supply assembly, the air cooling assembly drives the circumferential air supply assembly to rotate around the lower part of the shell (3) through the transmission mechanism, and the air in the circumferential air supply assembly is discharged into the shell (3) along the circumferential direction.
2. A dry lightning protection power transformer according to claim 1, characterized in that the air cooling assembly comprises a plurality of fans (9) installed on the side walls of the block (2), the fans (9) on the same side of the block (2) are connected by a rotating shaft (10), a motor (8) is provided at the end of one fan (9) near the edge, and the output end of the motor (8) is connected to the shaft of the fan (9) adjacent to the motor.
3. A dry lightning protection power transformer according to claim 2, characterized in that the motor (8) is fixedly mounted on the base (1) by means of a bracket, the blower (9) has a housing, an air inlet pipe (18) is provided at one end of the housing and communicates with the inside of the housing, and an air outlet pipe (20) is provided at the other end of the housing, and the air outlet pipe (20) communicates with the circumferential air supply assembly.
4. The dry lightning protection power transformer according to claim 3, wherein the circumferential air supply assembly comprises an annular air storage disc (23) coaxially and rotatably arranged below the housing (3), and a rubber gasket (24) hermetically attached to the lower surface of the housing (3) is fixed on the annular air storage disc (23);
the annular air storage disc (23) is connected with the transmission mechanism, round holes are formed in the annular air storage disc (23) and the rubber pad (24), and the round holes in the annular air storage disc (23) and the rubber pad (24) are concentric and correspond to the air cooling port (17) in the bottom of the shell (3).
5. The dry-type lightning protection power transformer according to claim 4, characterized in that a plurality of air holes are equidistantly arranged along the circumference on the outer wall of the annular air storage disc (23), a sealing ring (21) is hermetically and rotatably sleeved on the outer periphery of the annular air storage disc (23), an air hole corresponding to the air hole is formed in the sealing ring (21), the air outlet pipe (20) is communicated with the air hole, and the sealing ring (21) is installed on the cushion block (2) through a fixing frame (22).
6. A dry lightning protection power transformer according to claim 5, characterized in that the transmission mechanism comprises an output shaft (15) rotatably mounted on the spacer (2), a bevel gear structure connecting the output shaft (15) with the rotating shaft (10) of one of the air-cooled assemblies, and a meshing structure connecting the output shaft (15) with the annular air storage disc (23);
the output shaft (15) is arranged between two adjacent housings (3).
7. A dry lightning protection power transformer according to claim 6, characterized in that the bevel gear structure comprises a first bevel gear (11) fixed on the shaft (10), a driven shaft (13) rotatably mounted on the base (1), a second bevel gear (12) fixed on the driven shaft (13) and meshing with the first bevel gear (11), and a transmission belt (14) connecting the driven shaft (13) and the output shaft (15).
8. A dry lightning protection power transformer according to claim 7, characterised in that the meshing structure comprises a pinion (16) fixed on the output shaft (15) and an external ring gear (25) fixed on the external wall of the annular gas storage disc (23) and meshing with the pinion (16), the pinion (16) between two adjacent housings (3) meshing with the external ring gear (25) under both housings (3).
9. The dry lightning protection power transformer according to claim 1, characterized in that four corners of the base (1) are provided with rectangular notches, and each notch is rotatably provided with a bidirectional roller (19).
10. The dry lightning protection power transformer according to claim 5, characterized in that a plurality of supporting rollers (26) are rotatably mounted on the cushion block (2), and are distributed along the circumference, and the upper parts of the supporting rollers (26) are in rolling contact with the lower surface of the annular air storage disc (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510817.XA CN114300224A (en) | 2021-12-11 | 2021-12-11 | Dry-type lightning protection power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111510817.XA CN114300224A (en) | 2021-12-11 | 2021-12-11 | Dry-type lightning protection power transformer |
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| Publication Number | Publication Date |
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| CN114300224A true CN114300224A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111510817.XA Pending CN114300224A (en) | 2021-12-11 | 2021-12-11 | Dry-type lightning protection power transformer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55145319A (en) * | 1979-04-27 | 1980-11-12 | Aichi Electric Mfg Co Ltd | Changeover switch of on-load tap changer |
| CN206293243U (en) * | 2017-01-09 | 2017-06-30 | 何舒瑶 | A kind of environment-protection dry type power transformer |
| CN109859931A (en) * | 2019-01-17 | 2019-06-07 | 红旗集团温州变压器有限公司 | A kind of dry-type transformer with the dust-separation function that blocks water |
| US20190362879A1 (en) * | 2017-02-08 | 2019-11-28 | Abb Schweiz Ag | Air-cooled dry-type transformer |
| CN212161504U (en) * | 2020-06-04 | 2020-12-15 | 国网河南省电力公司夏邑县供电公司 | Heat radiation structure, transformer and electric power system |
-
2021
- 2021-12-11 CN CN202111510817.XA patent/CN114300224A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55145319A (en) * | 1979-04-27 | 1980-11-12 | Aichi Electric Mfg Co Ltd | Changeover switch of on-load tap changer |
| CN206293243U (en) * | 2017-01-09 | 2017-06-30 | 何舒瑶 | A kind of environment-protection dry type power transformer |
| US20190362879A1 (en) * | 2017-02-08 | 2019-11-28 | Abb Schweiz Ag | Air-cooled dry-type transformer |
| CN109859931A (en) * | 2019-01-17 | 2019-06-07 | 红旗集团温州变压器有限公司 | A kind of dry-type transformer with the dust-separation function that blocks water |
| CN212161504U (en) * | 2020-06-04 | 2020-12-15 | 国网河南省电力公司夏邑县供电公司 | Heat radiation structure, transformer and electric power system |
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