CN113963905A - Evaporation heat dissipation type energy-saving environment-friendly transformer - Google Patents
Evaporation heat dissipation type energy-saving environment-friendly transformer Download PDFInfo
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- CN113963905A CN113963905A CN202111183592.1A CN202111183592A CN113963905A CN 113963905 A CN113963905 A CN 113963905A CN 202111183592 A CN202111183592 A CN 202111183592A CN 113963905 A CN113963905 A CN 113963905A
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- water
- heat dissipation
- transformer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/16—Water cooling
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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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses an evaporative heat-dissipation type energy-saving environment-friendly transformer, which relates to the technical field of transformers and comprises a transformer box body, wherein a rainwater collecting mechanism and a heat dissipation mechanism are arranged on the transformer box body, the output end of the rainwater collecting mechanism is communicated with a water delivery pipe, the water delivery pipe is communicated with the heat dissipation mechanism, the heat dissipation mechanism comprises a plurality of heat dissipation fins, the heat dissipation fins are fixedly connected to the outer peripheral side of the transformer box body, and sealed cavities are formed in the heat dissipation fins, the auxiliary heat sink provides a further heat dissipation effect.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to an evaporative heat-dissipation type energy-saving environment-friendly transformer.
Background
The main components of the transformer are a primary coil, a secondary coil, and an iron core, and an alternating voltage is changed by the principle of electromagnetic induction. When the transformer is used, the lost energy is dissipated in a heat energy mode, so that the temperature of the transformer is increased when the transformer works, the performance of each part of the transformer is reduced, and the working efficiency and the service life of the transformer are directly influenced. Traditional transformer is through setting up the fin in the transformer box outside and assisting the heat dissipation, and this kind of mode provides bigger heat radiating area when the heat dissipation to form the radiating effect, but its radiating mode is comparatively passive radiating effect relatively poor, fails to effectively utilize the rainwater that the rainfall brought to assist the heat dissipation, and can't effectively deal with adaptability heat dissipation demand.
Disclosure of Invention
The invention provides an evaporative heat-dissipation type energy-saving environment-friendly transformer, and aims to solve the problem that in the prior art, the passive heat dissipation effect is poor in an auxiliary heat dissipation mode through a heat dissipation sheet.
In order to achieve the purpose, the invention adopts the following technical scheme:
an evaporation heat dissipation type energy-saving environment-friendly transformer comprises a transformer box body, wherein a rainwater collecting mechanism and a heat dissipation mechanism are installed on the transformer box body, the output end of the rainwater collecting mechanism is communicated with a water pipe, the water pipe is communicated with the heat dissipation mechanism, the heat dissipation mechanism comprises a plurality of heat dissipation fins, the heat dissipation fins are all fixedly connected to the outer peripheral side of the transformer box body, a sealing cavity is formed in the inner portion of the transformer box body, a water drawing screen plate is fixedly connected in the sealing cavity, a water inlet and a water outlet are communicated on one side, close to the transformer box body, of the sealing cavity, the water inlet and the water outlet are both formed in the heat dissipation fins, the water inlet is communicated with the water pipe, the water outlet is communicated with a cooling water pipe, the cooling water pipe is fixedly connected to the inner side wall of the transformer box body, one end, far away from the water outlet, of the cooling water pipe is communicated with a water pump, and the water pump is installed at the inner bottom of the transformer box body, and the output end of the water pump is communicated with the bottom of the collecting tank.
Preferably, rainwater is collected the mechanism and is including collecting cover, collecting pit, filter screen and raceway, collect cover fixed connection in transformer box upper end, and be square loudspeaker form, the area is collected in the increase, conveniently collects more rainwater, it has the collecting pit to collect the cover bottom through communicating pipe intercommunication, fixedly connected with filter screen in the communicating pipe filters the debris that carry in the wind and rain, avoids its operation that influences follow-up mechanism, the collecting pit sets up top in the transformer box, collecting pit one side top intercommunication has the raceway, collecting pit one end and water inlet intercommunication are kept away from to the raceway, supply with the rainwater after filtering, carry out supplementary heat dissipation.
Preferably, it is a plurality of the fin all is trapezoidal, and trapezoidal bottom fixed connection improves heat conduction area at transformer box periphery side, increases heat conduction efficiency, is located a plurality of on the same plane the fin is parallel to each other the clearance and evenly sets up, and sets up along vertical direction, and the steam that conveniently gives off disperses in to the air.
Preferably, the water inlet is higher than the water outlet, a water spraying effect is formed after water flow enters the water inlet, the evaporation effect of rainwater in the sealed cavity is improved, and the rainwater heat absorption efficiency is improved, wherein the water outlet is higher than the bottom of the sealed cavity, the water drawing screen plate comprises a screen frame and a cotton net, the screen frame is fixedly connected to the bottom of the sealed cavity, the cotton net is fixedly connected to the inner peripheral side of the screen frame, the bottom of the cotton net is lower than the water outlet, the cotton net can draw part of rainwater intercepted in the sealed cavity conveniently, the evaporation area of the rainwater is improved, and the rainwater heat absorption efficiency is improved.
Preferably, heat dissipation mechanism still includes slide and sealing spring, the slide is along the sealed sliding connection of horizontal direction in sealed intracavity, and keeps away from transformer box one end and runs through and stretch out sealed chamber, the slide is close to fixedly connected with sealing spring between transformer box one end and the sealed intracavity wall, sealing spring is initial to be in tensile state, and when sealed intracavity temperature was higher, its moisture evaporation effect increase made inside atmospheric pressure increase, and then promoted the slide and overcome the less sealing spring of elasticity, stretches out sealed chamber, and supplementary fin further improves heat radiating area, increases radiating efficiency, forms the heat radiating area change of adaptability.
Preferably, the inside evaporation chamber of having seted up of slider, evaporation chamber intercommunication has the intercommunicating pore, the intercommunicating pore removes sealed chamber extreme position department and sealed chamber intercommunication at the slider, a plurality of air vents have been seted up on the evaporation chamber, and is a plurality of the air vent is kept away from evaporation chamber one end intercommunication external, and after the intercommunicating pore switched on sealed chamber and evaporation chamber along with the slider removal, the hot steam in the sealed chamber directly gived off to the external world through the air vent to directly take away the heat, supplementary air heat conduction heat dissipation forms the heat conduction heat dissipation of steam, further improves the radiating effect.
Preferably, condenser tube is many bendings tubulose and distributes on transformer box inside wall, improves condenser tube and transformer box internal contact area, improves the radiating efficiency, the solenoid valve is installed at condenser tube internal top, whether control condenser tube circulates.
Preferably, the reservoir chamber has been seted up to transformer tank internal bottom, the water pump is installed at the reservoir chamber bottom, the reservoir chamber height is less than the delivery port, the reservoir chamber is greater than the cooling water pipe easily, the collecting pit and is less than the partial sealed chamber three volumetric sum of the delivery port height, delivery port department installs the fluviograph, the fluviograph just controls the two operating condition with solenoid valve and water pump electric connection, detects when the fluviograph is higher than predetermineeing the hydrologic cycle water level, triggers hydrologic cycle work, makes the solenoid valve switch on, the water pump work, and the water pump is given from the reservoir chamber to, cooling water pipe, collecting pit, sealed chamber pump in proper order, forms hydrologic cycle, further improves the radiating efficiency.
Compared with the prior art, the invention has the following beneficial effects:
1. when the transformer box body conducts heat conduction and heat dissipation, water flows into the sealed cavity from the water inlet, the evaporation effect of the water is improved, meanwhile, part of water is intercepted in the sealed cavity, a cotton net in the sealed cavity is infiltrated, the evaporation area of the water is further improved, and the heat dissipation fins are assisted to form a further heat dissipation effect.
2. When the temperature in the sealing cavity is higher, the moisture evaporation effect is increased, the internal air pressure is increased, the sliding sheet is pushed to extend out of the sealing cavity, the heat dissipation area is increased, the adaptive heat dissipation requirement is met, and the heat dissipation efficiency is increased; simultaneously behind the slide limit of sliding, the hot steam that the sealed intracavity evaporation formed directly spouts away through the air vent, directly takes away the heat, and supplementary air heat conduction heat dissipation forms the heat conduction heat dissipation of steam, further improves the radiating efficiency, cools down fast.
3. When the rainwater accumulated in the sealed cavity is more, the water level meter detects that the water level is higher than the preset water circulation water level, the water circulation work is started, the electromagnetic valve is controlled to be switched on, the water pump works, the water pump starts to pump and collect water, the water in the water storage chamber is sequentially pumped to the cooling water pipe, the collection pool and the sealed cavity, the water circulation is formed, and the heat dissipation efficiency is further improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a part of the rainwater collecting mechanism of the present invention;
FIG. 3 is a schematic view of a heat dissipation mechanism according to the present invention;
FIG. 4 is a schematic view of the heat sink and slider closure of the present invention;
fig. 5 is an expanded view of the heat sink and the slider of the present invention.
In the figure: 1 transformer box, 2 rainwater collecting mechanisms, 21 collecting covers, 22 collecting pools, 23 filter screens, 24 water conveying pipes, 3 heat radiating mechanisms, 31 radiating fins, 311 sealing cavities, 312 water inlets, 313 water outlets, 32 water drawing net plates, 33 cooling water pipes, 34 sliding sheets, 341 evaporation cavities, 342 communicating holes, 343 vent holes, 35 sealing springs, 4 water pumps, 41 water storage chambers and 42 water level meters.
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. 1-5, an evaporative heat dissipation type energy-saving and environment-friendly transformer comprises a transformer box body 1, wherein a rainwater collection mechanism 2 and a heat dissipation mechanism 3 are installed on the transformer box body 1, and the rainwater collection mechanism 2 collects rainwater and is used for dissipating heat by the heat dissipation mechanism 3.
Referring to fig. 2, rainwater collection mechanism 2 is including collecting cover 21, collecting pit 22, filter screen 23 and raceway 24, collects cover 21 fixed connection in transformer box 1 upper end, and is square loudspeaker form, does benefit to the increase and collects the area, conveniently collects more rainwater.
Collect cover 21 bottom and have collecting pit 22 through communicating pipe intercommunication, the intraductal fixedly connected with filter screen 23 of intercommunication forms the filter effect to the debris that carry in the wind and rain, avoids debris to get into 3 inside influence radiating effect of heat dissipation mechanism.
Collecting pit 22 sets up top in transformer box 1, and collecting pit 22 one side top intercommunication has raceway 24, and raceway 24 keeps away from collecting pit 22 one end and heat dissipation mechanism 3 intercommunication, and after the water level rose to the intercommunication department of raceway 24 and collecting pit 22 in collecting pit 22, water got into raceway 24 and flowed into in heat dissipation mechanism 3, supplied it to dispel the heat.
Referring to fig. 3, heat dissipation mechanism 3 includes a plurality of fin 31, and the equal fixed connection of a plurality of fin 31 is in 1 periphery side of transformer box, and a plurality of fin 31 all are trapezoidal, and trapezoidal bottom fixed connection improves heat conduction area increase heat conduction efficiency in 1 periphery side of transformer box, conveniently dispels the heat, is located the even setting in mutual parallel clearance of a plurality of fin 31 on the same plane, and sets up along vertical direction, makes things convenient for the circulation of hot gas to leave fin 31.
The inside of the radiating fin 31 is provided with a sealed cavity 311, the inside of the sealed cavity 311 is fixedly connected with a water drawing screen plate 32, one side of the sealed cavity 311 close to the transformer box body 1 is communicated with a water inlet 312 and a water outlet 313, the water inlet 312 and the water outlet 313 are both arranged on the radiating fin 31, the water inlet 312 is communicated with the water conveying pipe 24, the height of the water inlet 312 is higher than that of the water outlet 313, water can conveniently enter the sealed cavity 311 to be poured into the sealed cavity, the water evaporation effect is improved, the heat absorption efficiency is improved, the water outlet 313 is higher than the bottom of the sealed cavity 311, and the requirement that partial water can be intercepted in the sealed cavity 311 to perform normal evaporation and heat absorption is guaranteed.
The water drawing net plate 32 comprises a net frame and a cotton net, the net frame is fixedly connected to the bottom in the sealed cavity 311, the cotton net is fixedly connected to the inner peripheral side, the bottom of the cotton net is lower than the water outlet 313, and due to the capillary effect of water, the cotton net is soaked by the water retained in the sealed cavity 311, so that the evaporation area of the water is increased, and the heat absorption efficiency is improved.
Referring to fig. 4 and 5, heat dissipation mechanism 3 still includes slider 34 and sealing spring 35, slider 34 is along the sealed sliding connection of horizontal direction in seal chamber 311, and keep away from 1 one end of transformer box and run through and stretch out seal chamber 311, slider 34 is close to fixedly connected with sealing spring 35 between 1 one end of transformer box and the seal chamber 311 inner wall, sealing spring 35 is initial in tensile state, when the temperature is higher in seal chamber 311, the effect of moisture evaporation is big, inside atmospheric pressure increases, promote slider 34 and stretch out seal chamber 311 and improve heat radiating area, increase radiating efficiency.
The inside evaporation chamber 341 of having seted up of slide 34, evaporation chamber 341 intercommunication has the intercommunicating pore 342, intercommunicating pore 342 moves out sealed chamber 311 extreme position department and communicates with sealed chamber 311 at slide 34, has seted up a plurality of air vents 343 on the evaporation chamber 341, and a plurality of air vents 343 are kept away from evaporation chamber 341 one end intercommunication external, and behind slide 34 sliding limit, the hot steam that the evaporation formed directly spouts from air vent 343 and sends out, directly takes away the heat, further improves the radiating efficiency.
The bottom in the transformer box 1 is provided with a water storage chamber 41, the water pump 4 is arranged at the bottom in the water storage chamber 41, the height of the water storage chamber 41 is lower than the water outlet 313, the water storage chamber 41 is easily larger than the sum of the volumes of the cooling water pipe 33, the collecting tank 22 and a part of sealing cavity 311 which is lower than the water outlet 313, the water circulation is conveniently formed when the water is pumped from the water storage chamber 41 to the three, the water outlet 313 is provided with the water level gauge 42, the water level gauge 42 is electrically connected with the electromagnetic valve and the water pump 4 and controls the working states of the electromagnetic valve and the water pump, the electromagnetic valve is initially closed, the water entering the collecting tank 22 firstly flows into the sealed cavity 311, when the water level is lower than the water level of the water circulation preset by the water level gauge 42, the water is supplied to the heat dissipation mechanism 3 for evaporation, heat absorption and hot steam release, when the water level is higher than the water level meter 43 preset water circulation water level, the electromagnetic valve switches on the water pump 4 to work, the pump supplies and collects water, water circulation is formed, and the heat dissipation efficiency is improved.
During raining, rainwater is collected through the collecting cover 21, the rainwater is filtered through the filter screen 23 and enters the collecting tank 22 through the communicating pipe, the electromagnetic valve is in a closed state in an initial state, the water level of the rainwater in the collecting tank 22 gradually rises until the water level rises to the communicating position of the water conveying pipe 24 and the collecting tank 22, the water enters the water conveying pipe 24 and flows into the sealing cavity 311 in the radiating fin 31 through the water inlet 312, when the radiating fin 31 conducts heat dissipation in the transformer tank 1, the water entering from the water inlet 312 is poured into the sealing cavity 311, the evaporation effect of the water is improved, part of the water is intercepted in the sealing cavity 311, the cotton nets in the sealing cavity 311 are infiltrated, the evaporation efficiency of the water is further improved, and the radiating fin 31 is assisted to form a further radiating effect;
when the temperature in the sealed cavity 311 is high, the moisture evaporation effect is increased, the internal air pressure is increased, the sliding sheet 34 is pushed to overcome the elasticity of the sealing spring 35, the sealing cavity 311 is extended to improve the heat dissipation area, the heat dissipation efficiency is increased, and meanwhile, after the sliding sheet 34 slides to the limit, hot steam formed by evaporation in the sealed cavity 311 is directly sprayed out from the vent holes 343 through the communication holes 342 and the evaporation cavity 341 to directly take away heat, so that the heat dissipation efficiency is further improved;
when the rainwater accumulated in the sealed cavity 311 is more, and the water level is higher than the water circulating water level preset by the water level gauge 43, the electromagnetic valve is switched on, the water pump 4 works, the water pump 4 starts to pump and collect water, and the water in the water storage chamber 41 is sequentially pumped to the cooling water pipe 33, the collection pool 22 and the sealed cavity 311 to form water circulation, so that the heat dissipation efficiency is further improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. An evaporation heat dissipation type energy-saving environment-friendly transformer comprises a transformer box body (1), and is characterized in that a rainwater collecting mechanism (2) and a heat dissipation mechanism (3) are installed on the transformer box body (1), the output end of the rainwater collecting mechanism (2) is communicated with a water pipe (24), the water pipe (24) is communicated with the heat dissipation mechanism (3), the heat dissipation mechanism (3) comprises a plurality of radiating fins (31), the radiating fins (31) are fixedly connected to the outer peripheral side of the transformer box body (1), a sealed cavity (311) is formed inside the radiating fins, a water drawing screen plate (32) is fixedly connected in the sealed cavity (311), a water inlet (312) and a water outlet (313) are communicated with one side, close to the transformer box body (1), of the sealed cavity (311), and the water inlet (312) and the water outlet (313) are formed in the radiating fins (31), water inlet (312) and raceway (24) intercommunication, and delivery port (313) intercommunication have cooling water pipe (33), cooling water pipe (33) fixed connection is on transformer box (1) inside wall, and keeps away from delivery port (313) one end intercommunication and have water pump (4), bottom in transformer box (1) is installed in water pump (4), water pump (4) output intercommunication is in collecting pit (22) bottom.
2. The energy-saving and environment-friendly transformer with the evaporative heat dissipation function as recited in claim 1, wherein the rainwater collection mechanism (2) comprises a collection cover (21), a collection tank (22), a filter screen (23) and a water pipe (24), the collection cover (21) is fixedly connected to the upper end of the transformer box body (1) and is in a square horn shape, the bottom of the collection cover (21) is communicated with the collection tank (22) through a communicating pipe, the filter screen (23) is fixedly connected to the inside of the communicating pipe, the collection tank (22) is arranged at the top inside the transformer box body (1), the water pipe (24) is communicated with the top of one side of the collection tank (22), and one end, far away from the collection tank (22), of the water pipe (24) is communicated with the water inlet (312).
3. The evaporative heat-dissipation energy-saving environment-friendly transformer according to claim 1, wherein the plurality of heat dissipation fins (31) are trapezoidal, the bottom of the trapezoid is fixedly connected to the outer peripheral side of the transformer tank (1), and the plurality of heat dissipation fins (31) on the same plane are parallel to each other and are uniformly arranged in a gap manner and are arranged in the vertical direction.
4. The evaporative heat-dissipation energy-saving environment-friendly transformer as claimed in claim 1, wherein the water inlet (312) is higher than the water outlet (313), wherein the water outlet (313) is higher than the bottom of the sealed cavity (311), the water drawing net plate (32) comprises a net frame and a cotton net, the net frame is fixedly connected to the bottom in the sealed cavity (311), the cotton net is fixedly connected to the inner peripheral side, and the bottom of the cotton net is lower than the water outlet (313).
5. The evaporative heat-dissipation energy-saving environment-friendly transformer according to claim 1, wherein the heat-dissipation mechanism (3) further comprises a sliding sheet (34) and a sealing spring (35), the sliding sheet (34) is connected in the sealing cavity (311) in a sealing and sliding manner along the horizontal direction, one end of the sliding sheet far away from the transformer box body (1) penetrates through the sealing cavity (311) and extends out of the sealing cavity (311), the sealing spring (35) is fixedly connected between one end of the sliding sheet (34) close to the transformer box body (1) and the inner wall of the sealing cavity (311), and the sealing spring (35) is initially in a stretching state.
6. The energy-saving and environment-friendly transformer with the function of evaporation and heat dissipation according to claim 5, characterized in that an evaporation cavity (341) is formed inside the sliding sheet (34), the evaporation cavity (341) is communicated with a communication hole (342), the communication hole (342) is communicated with the sealed cavity (311) at the limit position where the sliding sheet (34) moves out of the sealed cavity (311), the evaporation cavity (341) is provided with a plurality of vent holes (343), and one ends of the vent holes (343) far away from the evaporation cavity (341) are communicated with the outside.
7. The evaporative heat-dissipation energy-saving environment-friendly transformer according to claim 1, wherein the cooling water pipes (33) are distributed on the inner side wall of the transformer tank (1) in a multi-bend pipe shape, and the electromagnetic valve is installed at the top inside the cooling water pipes (33).
8. The energy-saving and environment-friendly transformer with the function of evaporation and heat dissipation according to claim 7, characterized in that a water storage chamber (41) is arranged at the bottom in the transformer box body (1), the water pump (4) is arranged at the bottom in the water storage chamber (41), the height of the water storage chamber (41) is lower than that of the water outlet (313), the water storage chamber (41) is easily larger than the sum of the volumes of the cooling water pipe (33), the collection pool (22) and a part of the sealing cavity (311) which is lower than that of the water outlet (313), the water outlet (313) is provided with a water level gauge (42), and the water level gauge (42) is electrically connected with the electromagnetic valve and the water pump (4) and controls the working states of the electromagnetic valve and the water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111183592.1A CN113963905A (en) | 2021-10-11 | 2021-10-11 | Evaporation heat dissipation type energy-saving environment-friendly transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111183592.1A CN113963905A (en) | 2021-10-11 | 2021-10-11 | Evaporation heat dissipation type energy-saving environment-friendly transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113963905A true CN113963905A (en) | 2022-01-21 |
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ID=79463505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111183592.1A Withdrawn CN113963905A (en) | 2021-10-11 | 2021-10-11 | Evaporation heat dissipation type energy-saving environment-friendly transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113963905A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115297238A (en) * | 2022-07-30 | 2022-11-04 | 俊创城建集团有限公司 | Camera device for intelligent transportation |
| CN116417223A (en) * | 2023-04-18 | 2023-07-11 | 江苏盛久变压器有限公司 | Constant temperature cooling device for transformer |
| CN117292925A (en) * | 2023-10-08 | 2023-12-26 | 河北昌亚电力成套设备有限公司 | High-efficient heat dissipation transformer |
-
2021
- 2021-10-11 CN CN202111183592.1A patent/CN113963905A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115297238A (en) * | 2022-07-30 | 2022-11-04 | 俊创城建集团有限公司 | Camera device for intelligent transportation |
| CN116417223A (en) * | 2023-04-18 | 2023-07-11 | 江苏盛久变压器有限公司 | Constant temperature cooling device for transformer |
| CN116417223B (en) * | 2023-04-18 | 2024-05-14 | 广东卓立变压器有限公司 | Constant temperature cooling device for transformer |
| CN117292925A (en) * | 2023-10-08 | 2023-12-26 | 河北昌亚电力成套设备有限公司 | High-efficient heat dissipation transformer |
| CN117292925B (en) * | 2023-10-08 | 2024-04-26 | 河北昌亚电力成套设备有限公司 | High-efficient heat dissipation transformer |
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Application publication date: 20220121 |
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