CN114898982A - Dry-type transformer that power loss is low - Google Patents
Dry-type transformer that power loss is low Download PDFInfo
- Publication number
- CN114898982A CN114898982A CN202210776346.5A CN202210776346A CN114898982A CN 114898982 A CN114898982 A CN 114898982A CN 202210776346 A CN202210776346 A CN 202210776346A CN 114898982 A CN114898982 A CN 114898982A
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- Prior art keywords
- dry
- type transformer
- fixing frame
- frame
- fixing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
- B08B17/04—Preventing deposition of fouling or of dust by using removable coverings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention relates to a transformer, in particular to a dry-type transformer with low power loss. Provided is a dry-type transformer having high heat dissipation efficiency and low power loss. The dry type transformer with low power loss comprises a first fixing frame, a dry type transformer, a heat conducting block and the like; the bottom in the first fixed frame is connected with a first fixing frame, the first fixing frame is connected with a dry type transformer, the left side and the right side in the first fixed frame are connected with heat conducting blocks in an up-and-down symmetrical mode, and each heat conducting block is connected with the dry type transformer. The heat generated by the dry-type transformer is guided to the first fixing frame through the heat conducting block, and the water storage tank absorbs the heat in the first fixing frame, so that the heat dissipation effect is further improved; the water outlet pipe discharges the heated cooling liquid after the heat is absorbed in the water storage tank, so that the effect of cooling liquid circulation is achieved; therefore, the dry-type transformer can be subjected to all-dimensional heat dissipation, the heat dissipation effect is improved, and the power loss is reduced.
Description
Technical Field
The invention relates to a transformer, in particular to a dry-type transformer with low power loss.
Background
The dry type transformer is a transformer with an iron core and a winding which are not immersed in insulating oil, main components are a primary coil, a secondary coil and the iron core, and the dry type transformer is not immersed in the insulating oil, so that the dry type transformer has poor cooling effect, and the heat generation of the transformer can cause overlarge power loss of the transformer.
Patent publication is CN213583390U dry-type transformer heat radiation structure, including dry-type transformer heat radiation structure main part, dry-type transformer heat radiation structure main part includes dry-type transformer and fin, and dry-type transformer is inside has seted up first fluting, the inside fin that is provided with of first fluting, and the fin both ends set up on dry-type transformer through stabilizing mean, the fin both ends are all inserted and are established in the second fluting, and the second fluting outside is seted up in the shell, one side that the fin was kept away from to the shell all links firmly on dry-type transformer, and the fin outside has all laminated the grip block, the one end that the fin was kept away from to the grip block is inserted and is established in the third fluting, and the third fluting outside is all seted up in the shell, one side that the shell was kept away from to the grip block has linked firmly the spring. The invention ensures that the radiating fin is more stable after being installed, and prevents the radiating fin from loosening in daily use, but the equipment is easy to accumulate dust, thereby causing the reduction of the radiating performance.
Therefore, it is necessary to provide a dry-type transformer having high heat dissipation efficiency and low power loss.
Disclosure of Invention
In order to overcome the defects that dust is easily accumulated on the transformer and the heat dissipation performance is easily reduced, the invention aims to solve the technical problem of providing the dry-type transformer with high heat dissipation efficiency and low power loss.
In order to solve the technical problem, the invention provides the dry-type transformer with low power loss, which comprises a first fixing frame, the dry-type transformer, heat conducting blocks and a water cooling assembly, wherein the first fixing frame is connected to the bottom in the first fixing frame, the dry-type transformer is connected to the first fixing frame, the heat conducting blocks are symmetrically connected to the left side and the right side in the first fixing frame from top to bottom, each heat conducting block is connected with the dry-type transformer, and the water cooling assembly for enhancing the heat dissipation performance is arranged on the outer side of the first fixing frame.
Preferably, the water cooling module is including mounting bracket, storage water tank, oral siphon and outlet pipe, and the first fixed frame outside is connected with the storage water tank that is used for storing the coolant liquid, is connected with the mounting bracket that is used for supporting the storage water tank between the storage water tank left and right sides, and storage water tank bottom left side is connected with the oral siphon that is used for intaking, and storage water tank bottom right side is connected with the outlet pipe that is used for the drainage.
Preferably, still including being used for conveniently carrying out the protection mechanism of clearing up the dust, protection mechanism is including first fixed block, dead lever and protection shield, and the anterior symmetrical formula in first fixed frame left side is connected with two sets of first fixed blocks, and the first fixed block quantity of every group is two, and the equal rotary type is connected with the dead lever on the first fixed block of every group, is connected with the protection shield between two dead levers.
Preferably, still including being used for carrying out the barrier mechanism who shelters from to the oral siphon, barrier mechanism is including the second fixed block, blocks pole and elastic component, and the oral siphon right-hand member is connected with the second fixed block and communicates, and second fixed block sliding type is connected with and blocks the pole in, is connected with the elastic component that is used for blocking the pole and resets between second fixed block and the anterior of blocking the pole, and the elastic component cover is blocking on the pole.
Preferably, still including being used for providing the pushing mechanism of power to blocking mechanism, pushing mechanism is connected with the connecting plate including connecting plate, connecting rod and contact lever, blocks the pole front end, and downside dead lever bottom is connected with the connecting rod, and the connecting rod lower extreme is connected with the contact lever, can contact with the connecting plate when the contact lever removes.
Preferably, still including the mechanism of placing that is used for increasing storage capacity, place the mechanism including the fixed frame of second, second mount, storage tank and sliding block, the left side at storage tank top middle part is connected with the fixed frame of second, and the fixed frame left and right sides of second all is connected with the second mount that is used for the direction, and the fixed frame internal sliding formula of second is connected with the storage tank that is used for depositing article, and the storage tank left and right sides all is connected with the sliding block, sliding block and second mount sliding connection.
Preferably, still including being used for increasing the radiating effect shelter from the mechanism, shelter from the mechanism including third mount, rotor plate and torsion spring, equal interval connection in both sides has the third mount about the first fixed frame rear side, and equal rotary type is connected with the rotor plate on every third mount, all is connected with the torsion spring that is used for the rotor plate to reset between every third mount and the rotor plate left and right sides close, and every torsion spring all overlaps on the third mount.
Preferably, the material of each heat conduction block is copper.
The invention has the beneficial effects that: 1. the heat generated by the dry-type transformer is guided to the first fixing frame through the heat conducting block, and the water storage tank absorbs the heat in the first fixing frame, so that the heat dissipation effect is further improved; the water outlet pipe discharges the heated cooling liquid after the heat is absorbed in the water storage tank, so that the effect of cooling liquid circulation is achieved; therefore, the dry-type transformer can be subjected to all-dimensional heat dissipation, the heat dissipation effect is improved, and the power loss is reduced.
2. The user stimulates the protection shield left, and the protection shield makes the connecting rod to the left-hand motion with the dead lever cooperation, and the connecting rod passes through the contact lever and drives the connecting plate and move backward, and the connecting plate drives simultaneously and stops the pole and move backward, and then shelters from the oral siphon, so can conveniently clear up this device, prevent that the dust from reducing the radiating effect.
3. The user upwards stimulates the rotor plate through the third mount, and then makes the heat in the first fixed frame discharge through the third mount, so can make radiating effect obtain further reinforcing.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a partial perspective view of the present invention.
Fig. 3 is a schematic perspective view of the shielding mechanism of the present invention.
Fig. 4 is a schematic perspective view of the water cooling module according to the present invention.
Fig. 5 is a schematic partial perspective view of the water cooling module according to the present invention.
Fig. 6 is a schematic perspective view of the blocking mechanism of the present invention.
Fig. 7 is a schematic perspective view of the pushing mechanism of the present invention.
Fig. 8 is a schematic perspective view of the placement mechanism of the present invention.
Fig. 9 is a schematic perspective view of the shielding mechanism of the present invention.
FIG. 10 is a schematic perspective view of a portion of the shielding mechanism of the present invention.
The labels in the figures are: 1-a first fixed frame, 2-a first fixed frame, 3-a dry transformer, 4-a heat conducting block, 5-a protection mechanism, 51-a first fixed block, 52-a fixed rod, 53-a protection plate, 6-a water cooling component, 61-a mounting frame, 62-a water storage tank, 63-a water inlet pipe, 64-a water outlet pipe, 7-a blocking mechanism, 71-a second fixed block, 72-a blocking rod, 73-an elastic component, 8-a pushing mechanism, 81-a connecting plate, 82-a connecting rod, 83-a contact rod, 9-a placement mechanism, 91-a second fixed frame, 92-a second fixed frame, 93-a storage frame, 94-a sliding block, 10-a shielding mechanism, 101-a third fixed frame, 102-a rotating plate, and 103-a torsion spring.
Detailed Description
The invention is further described below with reference to the figures and examples.
Example 1
The utility model provides a dry-type transformer that power loss is low, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 9, including first fixed frame 1, first mount 2, dry-type transformer 3, heat conduction block 4 and water cooling module 6, the bottom welding has first mount 2 in first fixed frame 1, be connected with dry-type transformer 3 on the first mount 2, the equal longitudinal symmetry formula welding in the inside left and right sides of first fixed frame has heat conduction block 4, every heat conduction block 4 all is connected with dry-type transformer 3, the material of every heat conduction block 4 is copper, copper thermal conductivity is good, and then reduce the loss of electric power, first fixed frame 1 outside is equipped with water cooling module 6.
As shown in fig. 1, 4, 5, 6, 7 and 8, the water cooling assembly 6 comprises an installation frame 61, a water storage tank 62, a water inlet pipe 63 and a water outlet pipe 64, the water storage tank 62 is bolted to the outer side of the first fixing frame 1, the installation frame 61 is bonded between the left side and the right side of the water storage tank 62, the water inlet pipe 63 is connected to the left side of the bottom of the water storage tank 62, and the water outlet pipe 64 is connected to the right side of the bottom of the water storage tank 62.
Dry-type transformer 3 can produce a large amount of heats when using, the user is when using this device, through inserting external water pipe to oral siphon 63, make the coolant liquid pour into storage water tank 62 in, the heat that dry-type transformer 3 produced is leading-in to first fixed frame 1 through heat conduction piece 4, conveniently dispel the heat to the inboard heat of dry-type transformer 3, storage water tank 62 adsorbs the heat in first fixed frame 1, further increase radiating effect, outlet pipe 64 discharges the coolant liquid that becomes hot after the inside heat absorption of storage water tank 62 again, reach the effect of coolant liquid circulation, make the coolant liquid in storage water tank 62 be in the refrigerated state all the time, be convenient for dispel the heat to dry-type transformer 3, so can be to dry-type transformer 3 all-round heat dissipation, increase radiating effect, and then reduce the loss of electric power.
Example 2
On the basis of embodiment 1, as shown in fig. 1, 3 and 7, the protection device further includes a protection mechanism 5, the protection mechanism 5 includes two first fixing blocks 51, two fixing rods 52 and a protection plate 53, two groups of first fixing blocks 51 are symmetrically welded to the front portion of the left side of the first fixing frame 1, the number of each group of first fixing blocks 51 is two, the fixing rods 52 are rotatably connected to each group of first fixing blocks 51, and the protection plate 53 is welded between the two fixing rods 52.
As shown in fig. 1, 6 and 7, the water inlet pipe 63 further comprises a blocking mechanism 7, the blocking mechanism 7 comprises a second fixing block 71, a blocking rod 72 and an elastic member 73, the second fixing block 71 is welded at the right end of the water inlet pipe 63 and communicated with the right end of the water inlet pipe, the blocking rod 72 is connected in the second fixing block 71 in a sliding manner, the elastic member 73 is connected between the second fixing block 71 and the front portion of the blocking rod 72, and the elastic member 73 is sleeved on the blocking rod 72.
As shown in fig. 1 and 7, the device further comprises a pushing mechanism 8, the pushing mechanism 8 comprises a connecting plate 81, a connecting rod 82 and a contact rod 83, the connecting plate 81 is bolted to the front end of the blocking rod 72, the connecting rod 82 is welded to the bottom of the lower side fixing rod 52, the contact rod 83 is bolted to the lower end of the connecting rod 82, and the contact rod 83 can be in contact with the connecting plate 81 when moving.
When a user needs to clean dust on the dry-type transformer 3, the user pulls the external water pipe out of the water inlet pipe 63, the user pulls the protection plate 53 leftwards, the protection plate 53 drives the fixing rod 52 to rotate, the lower fixing rod 52 simultaneously drives the connecting rod 82 to rotate leftwards, the connecting rod 82 drives the connecting plate 81 to move backwards through the contact rod 83, the connecting plate 81 simultaneously drives the blocking rod 72 to move backwards, and further shields the water inlet pipe 63, so that residual cooling liquid in the water storage tank 62 is discharged through the water outlet pipe 64, and further the dry-type transformer 3 is convenient to inspect and clean, after the cleaning inspection is finished, the user pushes the protection plate 53 rightwards, the protection plate 53 drives the connecting rod 82 to rotate rightwards through the lower fixing rod 52, the connecting rod 82 drives the contact rod 83 to reset, the elastic element 73 returns to the original state, the elastic element 73 drives the blocking rod 72 to move forwards to reset, and the blocking rod 72 stops shielding the water inlet pipe 63, the user connects external water pipe on oral siphon 63 again, so can conveniently clear up this device, prevents that the dust from reducing the radiating effect.
Example 3
On the basis of embodiment 2, as shown in fig. 1 and 8, the water storage tank further comprises a placing mechanism 9, the placing mechanism 9 comprises a second fixing frame 91, a second fixing frame 92, a storage frame 93 and sliding blocks 94, the left side of the middle part of the top of the water storage tank 62 is connected with the second fixing frame 91, the second fixing frame 92 is welded on the left side and the right side of the second fixing frame 91, the storage frame 93 is connected in the second fixing frame 91 in a sliding manner, the sliding blocks 94 are welded on the left side and the right side of the storage frame 93, and the sliding blocks 94 are connected with the second fixing frame 92 in a sliding manner.
The user can place abluent instrument in storage frame 93, and when needs used, the user pulls storage frame 93 forward, makes storage frame 93 slide forward along second mount 92 through sliding block 94, when using the completion back, and the staff promotes storage frame 93 backward, makes storage frame 93 slide backward along second mount 92 through sliding block 94 and resets, so can increase the space that this device accomodates.
Example 4
On the basis of embodiment 3, as shown in fig. 9 and 10, the device further includes a shielding mechanism 10, the shielding mechanism 10 includes a third fixing frame 101, a rotating plate 102 and a torsion spring 103, three third fixing frames 101 are uniformly welded on the upper and lower sides of the rear side of the first fixing frame 1 at intervals, the rotating plate 102 is rotatably connected to each third fixing frame 101, the torsion spring 103 is connected between each third fixing frame 101 and the left and right sides of the adjacent rotating plate 102, and each torsion spring 103 is sleeved on the third fixing frame 101.
The user upwards pulls rotor plate 102 through third mount 101, and torsion spring 103 takes place deformation, and then makes the heat in the first fixed frame 1 discharge through third mount 101, and after the heat extraction finished, the user unclamped rotor plate 102, and torsion spring 103 reconversion, and then makes rotor plate 102 rotate downwards along third mount 101 and reset, so can make radiating effect obtain further reinforcing.
The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that various changes, modifications and substitutions may be made by those skilled in the art without departing from the spirit of the invention, and all are intended to be included within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides a dry-type transformer that power loss is low, including first fixed frame (1), first mount (2), dry-type transformer (3) and heat conduction piece (4), the bottom is connected with first mount (2) in first fixed frame (1), be connected with dry-type transformer (3) on first mount (2), the equal longitudinal symmetry formula in the inside left and right sides of first fixed frame (1) is connected with heat conduction piece (4), every heat conduction piece (4) all are connected with dry-type transformer (3), a serial communication port, still including water cooling module (6), first fixed frame (1) outside is equipped with water cooling module (6) of reinforcing heat dispersion.
2. The dry-type transformer with low power loss according to claim 1, characterized in that the water cooling assembly (6) comprises a mounting frame (61), a water storage tank (62), a water inlet pipe (63) and a water outlet pipe (64), the water storage tank (62) for storing cooling liquid is connected to the outer side of the first fixing frame (1), the mounting frame (61) for supporting the water storage tank (62) is connected between the left side and the right side of the water storage tank (62), the water inlet pipe (63) for water inlet is connected to the left side of the bottom of the water storage tank (62), and the water outlet pipe (64) for water drainage is connected to the right side of the bottom of the water storage tank (62).
3. The dry-type transformer with low power loss as claimed in claim 2, further comprising a protection mechanism (5) for conveniently cleaning dust, wherein the protection mechanism (5) comprises first fixing blocks (51), fixing rods (52) and a protection plate (53), two groups of first fixing blocks (51) are symmetrically connected to the front portion of the left side of the first fixing frame (1), the number of the first fixing blocks (51) in each group is two, the fixing rods (52) are rotatably connected to the first fixing blocks (51) in each group, and the protection plate (53) is connected between the two fixing rods (52).
4. The dry-type transformer with low power loss according to claim 3, further comprising a blocking mechanism (7) for shielding the water inlet pipe (63), wherein the blocking mechanism (7) comprises a second fixed block (71), a blocking rod (72) and an elastic element (73), the second fixed block (71) is connected to the right end of the water inlet pipe (63) and communicated with the water inlet pipe, the blocking rod (72) is connected to the second fixed block (71) in a sliding manner, the elastic element (73) for resetting the blocking rod (72) is connected between the second fixed block (71) and the front part of the blocking rod (72), and the elastic element (73) is sleeved on the blocking rod (72).
5. The dry-type transformer with low power loss as claimed in claim 4, further comprising a pushing mechanism (8) for providing power to the blocking mechanism (7), wherein the pushing mechanism (8) comprises a connecting plate (81), a connecting rod (82) and a contact rod (83), the connecting plate (81) is connected to the front end of the blocking rod (72), the connecting rod (82) is connected to the bottom of the lower side fixing rod (52), the contact rod (83) is connected to the lower end of the connecting rod (82), and the contact rod (83) can be in contact with the connecting plate (81) when moving.
6. The dry-type transformer with low power loss according to claim 5, further comprising a placing mechanism (9) for increasing the storage capacity, wherein the placing mechanism (9) comprises a second fixing frame (91), a second fixing frame (92), a storage frame (93) and a sliding block (94), the second fixing frame (91) is connected to the left side of the middle part of the top of the water storage tank (62), the second fixing frame (92) for guiding is connected to the left side and the right side of the second fixing frame (91), the storage frame (93) for storing articles is connected to the second fixing frame (91) in an inward sliding manner, the sliding block (94) is connected to the left side and the right side of the storage frame (93), and the sliding block (94) is connected to the second fixing frame (92) in a sliding manner.
7. The dry-type transformer with low power loss according to claim 6, further comprising a shielding mechanism (10) for increasing the heat dissipation effect, wherein the shielding mechanism (10) comprises a third fixing frame (101), a rotating plate (102) and torsion springs (103), the third fixing frame (101) is uniformly connected to the upper side and the lower side of the rear side of the first fixing frame (1) at intervals, the rotating plate (102) is rotatably connected to each third fixing frame (101), the torsion springs (103) for resetting the rotating plate (102) are connected between each third fixing frame (101) and the left side and the right side of the adjacent rotating plate (102), and each torsion spring (103) is sleeved on the third fixing frame (101).
8. A dry transformer according to claim 7, characterised in that each block (4) is copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210776346.5A CN114898982A (en) | 2022-07-04 | 2022-07-04 | Dry-type transformer that power loss is low |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210776346.5A CN114898982A (en) | 2022-07-04 | 2022-07-04 | Dry-type transformer that power loss is low |
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| Publication Number | Publication Date |
|---|---|
| CN114898982A true CN114898982A (en) | 2022-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210776346.5A Pending CN114898982A (en) | 2022-07-04 | 2022-07-04 | Dry-type transformer that power loss is low |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100579257B1 (en) * | 2006-01-26 | 2006-05-12 | 동방전기공업(주) | Outdoor dry transformer having shielding means comprising high-functional fiber materials |
| US20110255245A1 (en) * | 2010-04-19 | 2011-10-20 | Cheng Wen-Chieh | Power supply device having heat-dissipating function |
| CN105070474A (en) * | 2015-09-14 | 2015-11-18 | 株洲南车奇宏散热技术有限公司 | Flexible cooling method used for transformer or electric reactor and flexible cooler |
| CN212010638U (en) * | 2020-04-23 | 2020-11-24 | 惠安权小白科技有限公司 | Water-cooling transformer |
| CN212461329U (en) * | 2020-08-03 | 2021-02-02 | 北特变压器有限公司 | High-efficient radiating dry-type transformer cooling body |
| CN214476827U (en) * | 2021-05-15 | 2021-10-22 | 佛山市广诚电气安装有限公司 | Novel dry-type transformer |
| CN216166298U (en) * | 2021-10-19 | 2022-04-05 | 上海栾沃实业有限公司 | Drawer for control cabinet with good bearing capacity |
-
2022
- 2022-07-04 CN CN202210776346.5A patent/CN114898982A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100579257B1 (en) * | 2006-01-26 | 2006-05-12 | 동방전기공업(주) | Outdoor dry transformer having shielding means comprising high-functional fiber materials |
| US20110255245A1 (en) * | 2010-04-19 | 2011-10-20 | Cheng Wen-Chieh | Power supply device having heat-dissipating function |
| CN105070474A (en) * | 2015-09-14 | 2015-11-18 | 株洲南车奇宏散热技术有限公司 | Flexible cooling method used for transformer or electric reactor and flexible cooler |
| CN212010638U (en) * | 2020-04-23 | 2020-11-24 | 惠安权小白科技有限公司 | Water-cooling transformer |
| CN212461329U (en) * | 2020-08-03 | 2021-02-02 | 北特变压器有限公司 | High-efficient radiating dry-type transformer cooling body |
| CN214476827U (en) * | 2021-05-15 | 2021-10-22 | 佛山市广诚电气安装有限公司 | Novel dry-type transformer |
| CN216166298U (en) * | 2021-10-19 | 2022-04-05 | 上海栾沃实业有限公司 | Drawer for control cabinet with good bearing capacity |
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