CN115985630A - Air-cooled dry-type transformer - Google Patents
Air-cooled dry-type transformer Download PDFInfo
- Publication number
- CN115985630A CN115985630A CN202211435216.1A CN202211435216A CN115985630A CN 115985630 A CN115985630 A CN 115985630A CN 202211435216 A CN202211435216 A CN 202211435216A CN 115985630 A CN115985630 A CN 115985630A
- Authority
- CN
- China
- Prior art keywords
- air
- dry
- type transformer
- cooled
- heat insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses an air-cooled dry-type transformer, which relates to the field of transformer accessories and comprises a heat insulation cabinet and a dry-type transformer, wherein the dry-type transformer is fixedly arranged in an inner cavity of the heat insulation cabinet, the top of the heat insulation cabinet is fixedly connected with a ventilation cover plate, and an air-cooled heat dissipation assembly is arranged on the ventilation cover plate. The invention can effectively improve the flow velocity of air above the heat insulation cabinet, so that the outside air enters the inner cavity of the heat insulation cabinet, the speed of air circulation inside the heat insulation cabinet can be accelerated along with the rotation of the radiating blades, the temperature of the dry-type transformer in daily operation can be further reduced, and the dry-type transformer has a radiating function. Simultaneously, when the air velocity of external world increases, can make by the inner chamber of high-speed dispersion to heat dissipation rack. The running time of the whole air-cooled radiating assembly is prolonged, the radiating efficiency is improved, the phenomena of heat accumulation inside the cabinet body and continuous temperature rise are effectively avoided, the dry-type transformer is effectively protected, and the stability of the running state of the transformer is guaranteed.
Description
Technical Field
The invention relates to the field of transformer accessories, in particular to an air-cooled dry-type transformer.
Background
The dry type transformer is a transformer in which an iron core and a winding are not immersed in insulating oil, and is widely used for local lighting, high-rise buildings, airports, wharf CNC mechanical equipment and the like. The dry-type transformer is mainly divided into an open type, a closed type and a pouring type. The cooling method is divided into natural air cooling and forced air cooling. The dry-type transformer is safe, fireproof, pollution-free, high in mechanical strength, strong in short circuit resistance, small in partial discharge, good in thermal stability, high in reliability and long in service life. When the dry-type transformer works in a high-temperature environment for a long time, the running state of the dry-type transformer is easily influenced, so that the service life of the transformer is shortened.
But current transformer, but the most adoption electric drive's fan on its rack, when the transformer is in the ultra-temperature state, the fan operation implements the heat dissipation work to the transformer, however, when the transformer normal operating, the fan is in stall state, lack in the transformer rack and implement radiating part to the transformer, lead to the transformer under the running state, the temperature is constantly accumulated and is risen, until exceeding the temperature value that fan start condition was predetermine, implement the cooling work again this moment, the high temperature damage that the transformer received is irreversible, cause the influence to the stability of transformer operation.
Disclosure of Invention
In view of the above, the present application provides an air-cooled dry type transformer.
In order to achieve the above purpose, the present application provides the following technical solutions: the air-cooled dry-type transformer comprises a heat insulation cabinet and a dry-type transformer body, wherein the dry-type transformer body is fixedly installed in an inner cavity of the heat insulation cabinet, a ventilation cover plate is fixedly connected to the top of the heat insulation cabinet, an air-cooled heat dissipation assembly is arranged on the ventilation cover plate, and penetrates through the ventilation cover plate to extend to the upper side of the dry-type transformer body, so that air-cooled heat dissipation is conducted on the dry-type transformer body.
The back of the heat insulation cabinet is provided with a pair of air exhaust assemblies, and the air exhaust assemblies extend to the rear of the dry-type transformer and are used for exhausting the humid air in the cavity of the heat insulation cabinet.
The technical scheme of the invention is further improved in that the air-cooled heat dissipation assembly comprises a bearing plate, the bearing plate is positioned right above the ventilating cover plate, a rotatable hood is arranged above the bearing plate, a rotating shaft is fixed at the center of the top of the hood, a plurality of linkage blades are fixed on the side wall of the rotating shaft, and when the hood rotates, the linkage blades synchronously rotate.
The technical scheme of the invention is further improved in that the air-cooled heat dissipation assembly further comprises a through ring frame, the bottom of the through ring frame is fixed on the upper surface of the ventilation cover plate, the surface of the ventilation cover plate is provided with a through hole, the through ring frame surrounds the outside of the through hole, and air on the outside of the heat insulation cabinet can enter the inner cavity of the heat insulation cabinet through the through ring frame and the through hole.
The technical scheme of the invention is further improved in that a linkage shaft is fixed at the bottom of the hood, a plurality of radiating blades are fixedly connected to the side wall of the linkage shaft, and when the hood rotates, the linkage shaft and the radiating blades are positioned in an inner cavity of the heat insulation cabinet to rotate.
The technical scheme of the invention is further improved in that the outer surface of the linkage shaft is connected with an outer rotating cylinder through a ball bearing, and the outer side wall of the outer rotating cylinder is fixedly connected with a plurality of guide plates.
The garbage separating device is characterized in that a separating filter screen is arranged on the inner side of the through ring frame and close to the lower portion of the through ring frame, a through hole for accommodating the linkage shaft is formed in the surface of the separating filter screen, and the separating filter screen is located below the outer rotating cylinder and used for separating garbage.
The technical scheme of the invention is further improved in that a plurality of accommodating holes are formed in the top of the bearing plate, first balls are arranged on the inner sides of the accommodating holes, and the first balls are abutted against the bottom end of the blast cap.
The technical scheme of the invention is further improved in that a butt-joint annular plate is fixed at the center of the separation filter screen, a plurality of rotatable second balls are arranged on the surface of the butt-joint annular plate, and the second balls are abutted against the bottom of the outer rotary drum.
The technical scheme of the invention is further improved in that a guide cover is detachably connected to the inner side of the through ring frame and close to the lower part, and a channel is formed on the surface of the guide cover and close to the upper part.
The outer surface symmetry of direction cover is fixed with the locating frame, be provided with the sponge layer on the locating frame, the passageway is located the top of locating frame.
The technical scheme of the invention is further improved in that the air extraction component comprises an outer frame embedded in the back of the heat insulation cabinet, an air extraction fan is arranged on the inner side of the outer frame and is positioned in the inner cavity of the heat insulation cabinet, and a plurality of rain blocking strips are arranged on one end of the inner side of the outer frame, which is far away from the heat insulation cabinet, and are arranged in an inclined manner.
In conclusion, the technical effects and advantages of the invention are as follows:
1. in the process of the normal operation of the dry-type transformer, the air-cooled heat dissipation assembly is arranged, so that the flow velocity of air above the heat insulation cabinet can be effectively improved, and the outside air enters the inner cavity of the heat insulation cabinet. With the rotation of the radiating blades, the speed of air circulation inside the heat insulation cabinet can be accelerated, the temperature of the dry-type transformer during daily operation can be further reduced, and the heat dissipation function is achieved.
2. According to the invention, the air-cooling heat dissipation assembly is arranged, when the air flow speed outside is increased, the outer rotary cylinder and the guide plate rotate, so that air can quickly contact with the heat dissipation blades and is quickly dispersed to the inner cavity of the heat dissipation cabinet. Meanwhile, the rotation time of the radiating blades and the wind cap is prolonged, the running time of the whole air-cooled radiating assembly is prolonged, the radiating efficiency is improved, the phenomena of heat accumulation inside the cabinet body and continuous temperature rise are effectively avoided, the dry-type transformer is effectively protected, and the stability of the running state of the transformer is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of a second viewing angle structure according to the present invention.
FIG. 3 is a third perspective structural view of the present invention.
Fig. 4 is a schematic structural view of a dry-type transformer, an air-cooled heat dissipation assembly and an air extraction assembly according to the present invention.
Fig. 5 is a schematic view of a connection structure of the air-cooled heat dissipation assembly and the ventilation cover plate.
Fig. 6 is a schematic position diagram of the air-cooled heat dissipation assembly, the positioning frame and the guiding cover according to the present invention.
FIG. 7 is a schematic view of the internal structure of the through ring frame of the present invention.
FIG. 8 is an enlarged view of portion A of FIG. 7 according to the present invention.
FIG. 9 is a schematic view of the pumping assembly of the present invention.
In the figure: 1. a heat-insulating cabinet; 2. a dry-type transformer; 3. a gas permeable cover plate; 4. an air-cooled heat dissipation assembly; 5. an air extraction assembly; 6. a positioning frame; 7. a sponge layer; 8. separating the filter screen; 9. a guide housing; 10. a channel; 11. a first ball bearing; 12. butting the ring plates; 13. a second ball bearing; 41. a carrier plate; 42. a hood; 43. a rotating shaft; 44. linkage blades; 45. a through ring frame; 46. a linkage shaft; 47. a heat dissipating fin; 48. an outer rotating cylinder; 49. a guide plate; 51. an outer frame; 52. an air extracting fan; 53. a weather strip.
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.
Example 1: refer to fig. 1 and 2. The air-cooled dry-type transformer comprises a heat insulation cabinet 1 and a dry-type transformer 2, wherein the dry-type transformer 2 is fixedly installed in an inner cavity of the heat insulation cabinet 1, a ventilating cover plate 3 is fixedly connected to the top of the heat insulation cabinet 1, and an air-cooled heat dissipation assembly 4 is arranged on the ventilating cover plate 3, and in the daily working process of the dry-type transformer 2, the air-cooled heat dissipation assembly 4 penetrates through the ventilating cover plate 3 and extends to the upper portion of the dry-type transformer 2 to perform air-cooled heat dissipation on the dry-type transformer 2.
The maximum temperature of the existing dry-type transformer 2 is 155 degrees during operation. The general settings are that the fan is stopped at 80 ℃, the fan is started at 100 ℃, the high temperature alarm is carried out at 130 ℃ and the overtemperature tripping is carried out at 145 ℃. The normal operation temperature of a general transformer is about 60-70 ℃, and when the operation temperature of the dry-type transformer 2 is less than 100 ℃, the air-cooled heat dissipation assembly 4 carries out heat dissipation work to ensure the stable operation of the dry-type transformer 2.
The back of the heat insulation cabinet 1 is provided with a pair of air extraction assemblies 5, and the air extraction assemblies 5 extend to the rear of the dry-type transformer 2 and are used for extracting the humid air in the cavity of the heat insulation cabinet 1. When the gas in the heat insulation cabinet 1 is in an ultrahigh temperature state, the air exhaust assembly 5 works to reduce the influence of the ultrahigh temperature working environment on the dry-type transformer 2.
As shown in fig. 3, 4 and 5, the air-cooled heat dissipation assembly 4 includes a bearing plate 41, the bearing plate 41 is located right above the ventilating cover plate 3, a rotatable hood 42 is disposed above the bearing plate 41, a rotating shaft 43 is fixed at the center of the top of the hood 42, a plurality of linkage blades 44 are fixed on the side wall of the rotating shaft 43, and when the hood 42 rotates, the linkage blades 44 rotate synchronously.
The blast cap 42 used in the device can utilize the natural wind speed of the nature to push the blast cap to rotate, rotary power is provided, the blast cap 42 does not use electricity, is not restless, can rotate for a long time, and has the advantage of energy conservation, and in the rotating process of the blast cap 42, the rotating shaft 43 and the linkage blades 44 rotate synchronously, so that the flow speed of the air above the heat insulation cabinet 1 is effectively improved.
The air-cooled heat dissipation assembly 4 further comprises a through ring frame 45, the bottom of the through ring frame 45 is fixed on the upper surface of the ventilation cover plate 3, a through hole is formed in the surface of the ventilation cover plate 3, the through ring frame 45 surrounds the outer side of the through hole, and air on the outer side of the heat insulation cabinet 1 can enter the inner cavity of the heat insulation cabinet 1 through the through ring frame 45 and the through hole.
The through ring plate 45 can enable air flow in an external environment to pass through, enter the inner cavity of the heat insulation cabinet 1 and contact with the cavity, and the air flow has a heat dissipation effect on the inner cavity of the heat insulation cabinet 1. Meanwhile, the through ring 45 may facilitate the circulation of air, providing a passage essential for heat dissipation work.
As shown in fig. 4 and 5, a linkage shaft 46 is fixed at the bottom of the hood 42, a plurality of cooling fins 47 are fixedly connected to the side wall of the linkage shaft 46, and when the hood 42 rotates, the cooling fins 47 are located in the inner cavity of the heat insulation cabinet 1 and rotate under the connection effect of the linkage shaft 46 along with the rotation of the hood 42.
The external air passes through the through ring frame 45 and the ventilation cover plate 3 to enter the air inside the heat insulation cabinet body 1, and the heat dissipation blades 47 can accelerate the circulation speed of the air inside the heat insulation cabinet 1 in the rotation process, so that effective heat exchange work is implemented, the temperature of the dry-type transformer 2 in daily operation can be further reduced, and the heat dissipation function is realized.
In the daily operation process of the dry-type transformer 2, the heat dissipation mode can effectively avoid the rapid heating phenomenon generated in the operation process of the dry-type transformer 1, drive the temperature of the dry-type transformer 1 to be in a stable state, and ensure the safety of the dry-type transformer 2 in long-time operation.
Example 2: as shown in fig. 6, 7 and 8, an outer cylinder 48 is connected to an outer surface of the linkage shaft 46 through a ball bearing, and a plurality of guide plates 49 are fixedly connected to an outer side wall of the outer cylinder 48. When the flow speed of the external air increases, the outer rotating cylinder 48 and the guide plate 49 rotate in the inner cavity of the through ring frame 45, and the air flowing through the through ring frame 45 and entering the heat insulation cabinet 1 has an accelerating function, so that the air is rapidly contacted with the heat dissipation blades 47 and is dispersed to the inner cavity of the heat dissipation cabinet 1 under the rotating flow guiding action of the heat dissipation blades 47.
Meanwhile, after the air with the accelerated flowing speed rotates with the radiating blades 47, the rotating speed of the radiating blades 47 can be increased, so that the rotating time of the radiating blades 47 is prolonged, further, under the connecting action of the linkage shaft 46, the rotating time of the hood 42 is also prolonged, the running time of the whole air-cooled radiating assembly 4 is prolonged, the radiating effect is improved, and the radiating efficiency is improved.
A separation filter screen 8 is arranged on the inner side of the through ring frame 45 and close to the lower part, a through hole for accommodating the linkage shaft 46 is formed in the surface of the separation filter screen 8, and the separation filter screen 8 is positioned below the outer rotary drum 48 and used for blocking garbage. Avoid the rubbish stream in the external environment to get into the inboard of thermal-insulated rack 1, influence radiating vane 47's smooth rotation, simultaneously, link up the ring frame 45 side and be netted setting, can effectively avoid the great rubbish of volume to get into its inboard to the staff implements cleaning work to forced air cooling radiator unit regularly.
A plurality of accommodating holes are formed in the top of the bearing plate 41, first balls 11 are arranged on the inner sides of the accommodating holes, and the first balls 11 abut against the bottom ends of the wind caps 42. The first balls 11 are arranged to drive the hood 42 to rotate rapidly and smoothly, so that the clamping stagnation is reduced, the rotating speed of the hood 42 is guaranteed, and the rotating speed of the radiating blades 47 is further guaranteed.
A butt-joint annular plate 12 is fixed at the center of the separation filter screen 8, a plurality of rotatable second balls 13 are arranged on the surface of the butt-joint annular plate 12, and the second balls 13 are abutted against the bottom of the outer rotary drum 48. The purpose of the second balls 13 is to drive the outer cylinder 48 and the guide plate 49 to rotate smoothly and rapidly, so as to reduce the clamping feeling when the two rotate under the action of the airflow. The rotating speed of the heat insulation cabinet and the air inlet and outlet are guaranteed, and air can be quickly introduced into the inner cavity of the heat insulation cabinet 1.
As shown in fig. 3, 4 and 6, a guide cover 9 is detachably connected to the lower portion of the ring frame 45 through the inside thereof, and a passage 10 is opened in the upper portion of the surface of the guide cover 9. When the guide plate 49 rotates to guide the air to the inner cavity of the heat insulation cabinet 1, the air can be quickly dispersed and flows to the inner cavity of the heat insulation cabinet 1 after contacting with the rotating drainage acting force generated by the rotation of the radiating blades 47.
The guide cover 9 can guide the flowing air, so that the flowing air is quickly contacted with the dry-type transformer positioned below the guide cover, and the effect of quickly cooling the transformer in the operation process is achieved. At the same time, a part of the air may pass through the passages 10 formed in the guide plate 49 to contact the lower surface of the ventilation cover 3.
The outer surface of the guide cover 9 is symmetrically fixed with a positioning frame 6, a sponge layer 7 is arranged on the positioning frame 6, and a channel 10 is positioned above the positioning frame 6. Under humid environment, the air liquefaction of 1 inner chamber of thermal-insulated rack forms the drop of water gathering on ventilative apron 3's surface, and the purpose that is provided with sponge layer 7 is on avoiding the drop of water whereabouts to instil into dry-type transformer, causes the influence to the transformer, and locating frame 6 has fixed function to sponge layer 7, and simultaneously, the part passes the air of the 3 lower surfaces of passageway 10 contact ventilative apron, can accelerate the evaporation of drop of water, has certain dehumidification function.
As shown in fig. 4 and 9, the air extraction assembly 5 includes an outer frame 51 embedded in the back of the heat insulation cabinet 1, an air extraction fan 52 is disposed inside the outer frame 51, the air extraction fan 52 is located in the inner cavity of the heat insulation cabinet 1, a plurality of rain blocking strips 53 are arranged at one end of the inner side of the outer frame 51 far away from the heat insulation cabinet 1, and the rain blocking strips 53 are disposed in an inclined manner.
When the temperature inside the heat insulation cabinet 1 is too high, the air exhaust fan 52 inside the electric heat dissipation assembly 5 operates, and under the guiding action force after air exhaust, air inside the heat insulation cabinet 1 can be quickly exhausted, so that quick air circulation flow is realized, and heat dissipation work is implemented inside the heat insulation cabinet 1. Meanwhile, the pumping fan 52 can perform dehumidification operation on the inside of the heat insulation cabinet 1 in the operation process, so as to accelerate the discharge of humid gas, drive the inside of the heat insulation cabinet 1 to be in a suitable temperature and dry state, and facilitate the stable operation of the dry-type transformer.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides an air-cooled dry-type transformer, includes thermal-insulated rack (1) and dry-type transformer (2), dry-type transformer (2) fixed mounting is in the inner chamber of thermal-insulated rack (1), its characterized in that: the top of the heat insulation cabinet (1) is fixedly connected with a ventilation cover plate (3), an air-cooled heat dissipation assembly (4) is arranged on the ventilation cover plate (3), the air-cooled heat dissipation assembly (4) penetrates through the ventilation cover plate (3) and extends to the upper side of the dry-type transformer (2), and air-cooled heat dissipation is carried out on the dry-type transformer (2);
the back of the heat insulation cabinet (1) is provided with a pair of air extraction assemblies (5), and the air extraction assemblies (5) extend to the rear of the dry-type transformer (2) and are used for extracting damp air in the cavity of the heat insulation cabinet (1).
2. The air-cooled dry-type transformer according to claim 1, wherein: the utility model discloses a fan-cooled radiator unit (4) is including loading board (41), loading board (41) are located ventilative apron (3) directly over, the top of loading board (41) is provided with rotatable hood (42), the top center department of hood (42) is fixed with pivot (43), the lateral wall of pivot (43) is fixed with a plurality of linkage blades (44), works as when hood (42) rotate, linkage blade (44) synchronous rotation.
3. The air-cooled dry-type transformer according to claim 2, wherein: air-cooled radiator unit (4) are still including having a perfect understanding ring frame (45), the bottom of having a perfect understanding ring frame (45) is fixed in the upper surface of ventilative apron (3), the through-hole has been seted up on the surface of ventilative apron (3), it encircles in the outside of through-hole to have a perfect understanding ring frame (45), the air in the outside of thermal-insulated rack (1) can pass the inner chamber that has a perfect understanding ring frame (45), through-hole entering thermal-insulated rack (1).
4. The air-cooled dry transformer according to claim 3, wherein: the bottom of hood (42) is fixed with universal driving shaft (46), the lateral wall fixedly connected with a plurality of radiator vane (47) of universal driving shaft (46), works as when hood (42) rotates, universal driving shaft (46), radiator vane (47) are located the inner chamber rotation of thermal-insulated rack (1).
5. The air-cooled dry transformer according to claim 4, wherein: the outer surface of the linkage shaft (46) is connected with an outer rotary drum (48) through a ball bearing, and the outer side wall of the outer rotary drum (48) is fixedly connected with a plurality of guide plates (49);
the garbage separating device is characterized in that a separating filter screen (8) is arranged on the inner side of the through ring frame (45) and close to the lower portion of the through ring frame, a through hole for accommodating a linkage shaft (46) is formed in the surface of the separating filter screen (8), and the separating filter screen (8) is located below an outer rotating cylinder (48) and used for separating garbage.
6. The air-cooled dry-type transformer according to claim 2, wherein: a plurality of accommodating holes are formed in the top of the bearing plate (41), first balls (11) are arranged on the inner sides of the accommodating holes, and the first balls (11) are abutted to the bottom end of the hood (42).
7. The air-cooled dry transformer according to claim 5, wherein: a butt joint annular plate (12) is fixed at the center of the separation filter screen (8), a plurality of rotatable second balls (13) are arranged on the surface of the butt joint annular plate (12), and the second balls (13) are abutted against the bottom of the outer rotating cylinder (48).
8. The air-cooled dry transformer according to claim 3, wherein: a guide cover (9) is detachably connected to the inner side of the through ring frame (45) and close to the lower part, and a channel (10) is formed in the surface of the guide cover (9) and close to the upper part;
the outer surface symmetry of direction cover (9) is fixed with locating frame (6), be provided with sponge layer (7) on locating frame (6), passageway (10) are located the top of locating frame (6).
9. The air-cooled dry transformer according to claim 1, wherein: air exhaust subassembly (5) including inlaying outer frame (51) of locating thermal-insulated rack (1) the back, the inboard of outer frame (51) is provided with air exhaust fan (52), air exhaust fan (52) are located the inner chamber of thermal-insulated rack (1), the one end range that thermal-insulated rack (1) was kept away from to outer frame (51) inboard is provided with a plurality of weather strips (53), weather strip (53) are the slope form and set up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211435216.1A CN115985630A (en) | 2022-11-16 | 2022-11-16 | Air-cooled dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211435216.1A CN115985630A (en) | 2022-11-16 | 2022-11-16 | Air-cooled dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115985630A true CN115985630A (en) | 2023-04-18 |
Family
ID=85961856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211435216.1A Pending CN115985630A (en) | 2022-11-16 | 2022-11-16 | Air-cooled dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115985630A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116598088A (en) * | 2023-05-06 | 2023-08-15 | 河北承捷电力设备制造有限公司 | Air-cooled dry-type transformer |
-
2022
- 2022-11-16 CN CN202211435216.1A patent/CN115985630A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116598088A (en) * | 2023-05-06 | 2023-08-15 | 河北承捷电力设备制造有限公司 | Air-cooled dry-type transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201774387U (en) | Low-voltage and high-power cooling dome of electric motor | |
| CN115985630A (en) | Air-cooled dry-type transformer | |
| CN216123347U (en) | Switch power supply box | |
| CN214478491U (en) | Explosion-proof shell of power distribution switch control equipment | |
| CN214850855U (en) | Motor with heat dissipation structure | |
| CN214543224U (en) | Outdoor switch board of rain-proof dehumidification stoving function | |
| CN220065433U (en) | Full-closed module capable of realizing negative pressure exhaust and drawer type installation | |
| CN107620719A (en) | Atmospheric monitoring system ventilation equipment in a kind of containment | |
| CN209544259U (en) | A kind of breaker with heat sinking function | |
| CN112531519A (en) | Electric power cabinet with dampproofing high temperature function of preventing | |
| CN207420907U (en) | Atmospheric monitoring system ventilation equipment in a kind of containment | |
| CN110855080A (en) | Ventilation and heat dissipation system of five-phase asynchronous induction motor | |
| CN218569643U (en) | Wind power converter control cabinet | |
| CN217212801U (en) | Real-time monitoring device for electric power engineering | |
| CN220732178U (en) | Dampproofing device of low voltage distribution box | |
| CN220776334U (en) | Arc protection device is drawn to photovoltaic power plant | |
| CN218498585U (en) | Low-voltage distribution control equipment | |
| CN219738700U (en) | High-performance dry-type transformer | |
| CN213071812U (en) | Compact power distribution cabinet with variable low-voltage side for street lamp | |
| CN219843427U (en) | Novel overheat protection device for intelligent charger | |
| CN221042105U (en) | Power distribution cabinet with good heat dissipation performance | |
| CN220122697U (en) | Waterproof three-phase alternating current permanent magnet synchronous motor | |
| CN213340200U (en) | But automatic radiating heavy current plateau type seals utmost point post admittedly | |
| CN216976823U (en) | Rotary air preheater for boiler | |
| CN218934832U (en) | Fire control smoke exhaust fan of high-efficient cooling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |