Dry-type transformer capable of improving safety based on high-load carrying condition

Abstract

The invention relates to the technical field of transformers, in particular to a dry-type transformer capable of improving safety on the basis of high-load carrying conditions, which comprises a heat dissipation seat, three dry-type transformer components, three external heat dissipation mechanisms and three internal heat dissipation mechanisms, and the cold air supply mechanism is in through connection with the three external heat dissipation mechanisms through three pipelines. Through cooperative work of the external heat dissipation mechanism and the internal heat dissipation mechanism, internal and external synchronous efficient heat dissipation is achieved; the external heat dissipation mechanism circulates cold air on the outer layer to help the dry-type transformer assembly to be cooled and remove dust on the surface, automatic cleaning is achieved, and the maintenance cost and time are reduced. An annular air duct is formed on the inner side of the dry-type transformer assembly through the internal heat dissipation mechanism, uniform heat dissipation is provided, when cooling of a key area needs to be enhanced, the air duct is folded into a fan-shaped air duct, local rapid cooling is conducted on the key area, and it is ensured that the dry-type transformer assembly stably operates at the safe temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and particularly to a dry-type transformer that can improve safety under high-load operating conditions. Background Art

[0002] As an innovative form of transformer, dry-type transformers have been widely used in recent years; dry-type transformers have made changes from the perspective of the cooling medium, no longer using oil, but using air or nitrogen for cooling; the maintenance-free characteristics of dry-type transformers greatly reduce the subsequent maintenance costs and workload, improving the operating efficiency and reliability of the equipment; in addition, due to the absence of oil, dry-type transformers also have higher human safety and environmental protection, and can be used in a wider range of environments, meeting the high standards of modern electrical equipment for environmental protection and human health.

[0003] A dry-type transformer with the publication number CN117854883B has solved the technical drawbacks that the high-voltage and low-voltage windings of dry-type transformers are generally exposed and directly in contact with air, and the heat dissipation means generally rely on direct heat exchange with the outside air, so the heat dissipation effect of general dry-type transformers is average; the heat dissipation structure of the dry-type power transformer with the publication number CN219778657U has solved the technical drawbacks that when blowing air to cool the transformer in a fixed direction, the transformer body cannot fully contact with the air flow, resulting in a cooling blind area. Through means such as air cooling and water cooling, the heat dissipation effect is enhanced, but in actual use, structures of similar types still have many defects. For example, the existing heat dissipation structures of dry-type transformers adopt fixed air-cooling heat dissipation and enclosed contact-type heat dissipation, which cannot strengthen the cooling of key areas, easily causing local high temperatures in the key areas of dry-type transformers. At the same time, the enclosed contact-type heat dissipation also generates dust collection, not only reducing the heat dissipation efficiency, but also reducing the safety of dry-type transformers under high-load operation.

[0004] Therefore, the above technical problems need to be solved. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a dry-type transformer that can improve safety under high-load operating conditions, so as to solve the problems that the existing heat dissipation structures of dry-type transformers adopt fixed air-cooling heat dissipation and enclosed contact-type heat dissipation, which cannot strengthen the cooling of key areas, easily causing local high temperatures in the key areas of dry-type transformers. At the same time, the enclosed contact-type heat dissipation also generates dust collection, not only reducing the heat dissipation efficiency, but also reducing the safety of dry-type transformers under high-load operation.

[0006] To solve the above technical problems, the basic technical solution proposed by the present invention is as follows:

[0007] A dry-type transformer that can improve safety under high-load carrying conditions, comprising a heat dissipation base, three dry-type transformer components, three external heat dissipation mechanisms, and three internal heat dissipation mechanisms. The heat dissipation base consists of an installation base and three installation covers. Among them, the three installation covers are fixedly installed equidistantly on the top of the installation base, and through openings are provided on the inner wall of the bottom of the installation cover. The three dry-type transformer components are respectively fixedly installed on the tops of the three installation covers. An air supply mechanism is fixedly installed inside the installation base. The three external heat dissipation mechanisms are respectively fixedly installed inside the three installation covers. The tops of the three external heat dissipation mechanisms are respectively connected to the three internal heat dissipation mechanisms through rotating shaft sleeves in a penetrating manner, and the three internal heat dissipation mechanisms are respectively fixedly installed on the inner walls of the three installation covers. The air supply mechanism is connected to the three external heat dissipation mechanisms through three pipelines in a penetrating manner;

[0008] The air supply mechanism provides cold air for heat dissipation to the external heat dissipation mechanism and the internal heat dissipation mechanism. When the dry-type transformer components are under high-load operation, the external heat dissipation mechanism is driven to convey the cold air for heat dissipation to the outside of the dry-type transformer components, forming multiple external flowing air streams. An air flow curtain is formed through the air flow. While using the flow of the air curtain to take away the heat on the outside of the dry-type transformer components, the dust on the surface of the dry-type transformer components is cleaned by the flow of the air curtain, achieving the function of automatic dust cleaning and playing a good self-cleaning role in the use of the dry-type transformer. At the same time, when the dry-type transformer components are evenly dissipating heat, the internal heat dissipation mechanism is driven to operate. The internal heat dissipation mechanism conveys the cold air for heat dissipation to the inside of the dry-type transformer components, forming an annular vertical air duct to achieve uniform diffusion of cold air for uniform heat dissipation of the inside of the dry-type transformer components. When strengthening the cooling of the key areas inside the dry-type transformer components, the internal heat dissipation mechanism is driven to fold and operate, forming a fan-shaped vertical air duct to achieve enhanced cooling of the key areas, ensuring that the temperature of the dry-type transformer components is stably within a safe range. The combination of external heat dissipation on the outside of the external heat dissipation mechanism and internal heat dissipation on the inside of the internal heat dissipation mechanism realizes efficient internal and external synchronous heat dissipation of the dry-type transformer components, improving the safety of the dry-type transformer under high-load operation.

[0009] Preferably, the external heat dissipation mechanism consists of four chute frames, four arc-shaped air pipes, a chute disc, a spline rod, a cold air distribution seat, a servo motor, and a transmission shaft rod. Among them, the cold air distribution seat is fixedly installed at the bottom of the installation cover. The four chute frames are evenly distributed outside the cold air distribution seat. The four arc-shaped air pipes are movably installed inside the four chute frames, and one end of each of the four arc-shaped air pipes is connected to the cold air distribution seat through a telescopic hose. The transmission shaft rod is rotatably installed inside the cold air distribution seat. The spline rod is fixedly installed at the top of the cold air distribution seat. An air inlet hole is provided inside the spline rod. A rotating shaft sleeve is fixedly installed at the top of the spline rod. The rotating shaft sleeve can convey the cold air inside the cold air distribution seat to the internal heat dissipation mechanism through the air inlet hole. The bottom of the transmission shaft rod is fixedly connected to the output end of the servo motor, and the servo motor is fixedly installed on the top wall of the installation base.

[0010] Preferably, the internal heat dissipation mechanism consists of a circular groove slide rail, twelve folding rods, twelve sliders, a chute shaft rod, a mounting frame, a lead screw, a nut seat, a divergent flexible pipe, six nozzles, and a servo motor. Among them, the circular groove slide rail is fixedly installed on the inner wall of the installation cover. The twelve sliders are evenly distributed and movably connected inside the circular groove slide rail. One nozzle is fixedly installed on the top of every other slider. One side of each of the six nozzles is connected to the divergent flexible pipe through a shaft sleeve, and the bottom of the divergent flexible pipe is connected to the spline rod through a rotating shaft sleeve. The bottoms of the twelve sliders are movably connected to eleven folding rods through bolts. The heads and tails of every two adjacent folding rods are connected by bolts to form an annular linkage frame. The annular linkage frame is movably installed at the bottom of the circular groove slide rail through the sliders. One end of the annular linkage frame is movably connected to one end of the chute shaft rod through a bolt, and the chute shaft rod is movably connected to another slider through the internal chute. One side of the circular groove slide rail is fixedly installed with a mounting frame. A lead screw is rotatably installed inside the mounting frame. A nut seat is sleeved on the outside of the lead screw, and the nut seat is movably installed inside the mounting frame through a slide rail. The bottom of the nut seat is movably connected to the other end of the chute shaft rod through a traction shaft rod. One end of the lead screw is fixedly connected to the output end of the servo motor, and the servo motor is fixedly installed on the front of the mounting frame.

[0011] Preferably, the cold air supply mechanism consists of a cooling fan, a filter, a dryer, and a semiconductor refrigerator. The cooling fan is installed on one side inside the installation base through a support frame. The filter is fixedly installed at the air inlet end of the cooling fan. The dryer is fixedly installed at the air outlet end of the cooling fan, and the semiconductor refrigerator is fixedly installed on the top of the dryer. The air outlet end of the dryer is connected to the three cold air distribution seats through three pipes respectively.

[0012] Preferably, the top of the dry-type transformer assembly is provided with evenly spaced heat dissipation holes, and a cooling air duct is arranged inside the dry-type transformer assembly.

[0013] Preferably, a hanger is fixedly installed on the top of the three dry-type transformer components. A heat dissipation cover is fixedly installed inside the hanger. A through hole corresponding to the heat dissipation hole is opened at the bottom of the heat dissipation cover. Heat dissipation windows are embedded and installed at both ends of the hanger and both ends of the installation base.

[0014] Preferably, a chassis is fixedly installed at the bottom of the heat dissipation base. Brackets are fixedly installed on both sides of the bottom of the chassis. Movable wheels are fixedly installed at both ends of the brackets.

[0015] The beneficial effects of the present invention are as follows:

[0016] Through the collaborative work of the external heat dissipation mechanism and the internal heat dissipation mechanism, the present invention realizes efficient heat dissipation both inside and outside, effectively reduces the temperature of the dry-type transformer under high-load operation conditions, and ensures its safe and stable operation. Among them, the external heat dissipation mechanism circulates cold air on the outer layer to help cool the dry-type transformer components and remove surface dust, realizing automatic cleaning, reducing maintenance costs and time. By forming an annular air duct inside the dry-type transformer components through the internal heat dissipation mechanism to provide uniform heat dissipation, and when it is necessary to strengthen the cooling of key areas, it is folded into a fan-shaped air duct to quickly cool the key areas locally, ensuring the stable operation of the dry-type transformer components at a safe temperature, and providing a strong guarantee for the long-term stable operation of the dry-type transformer under high load. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 is a schematic diagram of the sectional expanded structure of the present invention;

[0020] Figure 4 is a schematic diagram of the internal structure of the heat dissipation base of the present invention;

[0021] Figure 5 is a schematic diagram of the cold air supply mechanism structure of the present invention;

[0022] Figure 6 is a schematic diagram of the external heat dissipation mechanism structure of the present invention;

[0023] Figure 7 is a schematic diagram of the expanded structure of the external heat dissipation mechanism of the present invention;

[0024] Figure 8 is a schematic diagram of the internal heat dissipation mechanism structure of the present invention;

[0025] Figure 9 is a schematic diagram of the annular linkage frame structure of the present invention;

[0026] Figure 10 Schematic diagram of the internal structure of the high-voltage coil of the present invention.

[0027] Description of the reference numerals in the drawings:

[0028] 1. Chassis; 101. Bracket; 102. Movable wheel; 2. Heat dissipation base; 201. Installation base; 202. Installation cover; 3. Dry-type transformer assembly; 301. Heat dissipation holes; 302. Cooling air ducts; 4. Hanging bracket; 401. Heat dissipation cover; 5. External heat dissipation mechanism; 501. Slide rail frame; 502. Arc-shaped air pipe; 503. Slide disk; 504. Spline rod; 505. Cold air distribution seat; 506. Servo motor; 507. Transmission shaft rod; 6. Internal heat dissipation mechanism; 601. Circular groove slide rail; 602. Folding rod; 603. Slide block; 604. Slide groove shaft rod; 605. Mounting frame; 606. Lead screw; 607. Nut seat; 608. Divergent flexible pipe; 609. Sprayer; 610. Servo motor; 7. Cold air supply mechanism; 701. Heat dissipation fan; 702. Filter; 703. Dryer; 704. Semiconductor refrigerator. Detailed implementation manners

[0029] The following will combine the attached Figure 1 to the attached Figure 10 to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] A dry-type transformer that can improve safety under high-load operating conditions, comprising a heat dissipation base 2, three dry-type transformer components 3, three external heat dissipation mechanisms 5, and three internal heat dissipation mechanisms 6. The heat dissipation base 2 consists of a mounting base 201 and three mounting covers 202. Among them, the three mounting covers 202 are fixedly installed equidistantly on the top of the mounting base 201, and through openings are provided on the inner wall of the bottom of the mounting cover 202. The three dry-type transformer components 3 are respectively fixedly installed on the tops of the three mounting covers 202. A cold air supply mechanism 7 is fixedly installed inside the mounting base 201. The three external heat dissipation mechanisms 5 are respectively fixedly installed inside the three mounting covers 202. The tops of the three external heat dissipation mechanisms 5 are respectively connected to the three internal heat dissipation mechanisms 6 through rotating shaft sleeves in a penetrating manner, and the three internal heat dissipation mechanisms 6 are respectively fixedly installed on the inner walls of the three mounting covers 202. The cold air supply mechanism 7 is connected to the three external heat dissipation mechanisms 5 through three pipelines in a penetrating manner; the cold air supply mechanism 7 provides cooling cold air for the external heat dissipation mechanism 5 and the internal heat dissipation mechanism 6 to ensure the smooth progress of the heat dissipation process; when the dry-type transformer component 3 is operating under high load, the external heat dissipation mechanism 5 is driven to convey the cooling cold air to the outside of the dry-type transformer component 3, forming multiple external flowing air currents outside the dry-type transformer component 3. An air flow curtain is formed through the air flow. While the heat on the outside of the dry-type transformer component 3 is carried away by the flow of the air curtain, the dust on the surface of the dry-type transformer component 3 is cleaned by the flow of the air curtain, achieving the function of automatically cleaning dust and playing a good self-cleaning role in the use of the dry-type transformer; at the same time, when the dry-type transformer component 3 is evenly dissipating heat, the internal heat dissipation mechanism 6 is driven to operate. The cooling cold air is conveyed to the inside of the dry-type transformer component 3 through the internal heat dissipation mechanism 6, forming an annular vertical air duct to achieve uniform diffusion of the cold air to evenly dissipate heat from the inside of the dry-type transformer component 3. When strengthening the cooling of the key areas inside the dry-type transformer component 3, the internal heat dissipation mechanism 6 is driven to fold and operate, forming a fan-shaped vertical air duct to achieve enhanced cooling of the key areas, ensuring that the temperature of the dry-type transformer component 3 is stably within the safe range. The combination of external heat dissipation on the outside of the external heat dissipation mechanism 5 and internal heat dissipation on the inside of the internal heat dissipation mechanism 6 is used to achieve efficient internal and external synchronous heat dissipation of the dry-type transformer component 3, improving the safety of the dry-type transformer under high-load operation;

[0031] It should be noted that the three dry-type transformer components 3 are respectively fixedly installed on the installation cover 202 and are responsible for the transmission and conversion of core power. The three external heat dissipation mechanisms 5 are embedded inside the installation cover 202 and are connected to the internal heat dissipation mechanism 6 through the rotating shaft sleeve. The three external heat dissipation mechanisms 5 are responsible for providing cold air to the outside of the three dry-type transformer components 3, forming multiple air flow curtains, effectively taking away the surface temperature and automatically cleaning dust; the three internal heat dissipation mechanisms 6 are fixed on the inner wall of the installation cover 202, can be unfolded and folded, and adjust the air duct shape according to needs to achieve uniform cooling and enhanced cooling of the inside and key areas of the dry-type transformer components 3, ensuring that the temperature is stably within the safe range; the air supply mechanism 7 is installed inside the installation base 201 and provides a cold air source for the three external heat dissipation mechanisms 5 and the three internal heat dissipation mechanisms 6. When the dry-type transformer is operating at high load, first drive the external heat dissipation mechanism 5 to unfold, deliver the cold air provided by the air supply mechanism 7 to the outside of the dry-type transformer components 3 to form a cooling air curtain, and automatically clean the dust on the outside of the dry-type transformer components 3, protecting the transformer components from high-temperature damage and achieving the effect of automatic cleaning; then the internal heat dissipation mechanism 6 unfolds and operates when the dry-type transformer components 3 are evenly dissipating heat, forming an annular air duct to achieve uniform internal heat dissipation, and folds and operates when cooling key areas are needed, forming a fan-shaped air duct to concentrate on cooling key parts, ensuring that the temperature is stably within the safe range, thus realizing efficient internal and external synchronous heat dissipation and improving the heat dissipation capacity and safety of the dry-type transformer under high-load operating conditions.

[0032] As Figures 4 to 7 shown, the external heat dissipation mechanism 5 is composed of four chute frames 501, four arc-shaped air pipes 502, a chute disk 503, a spline rod 504, a cold air distribution seat 505, a servo motor 506, and a drive shaft rod 507. Among them, the cold air distribution seat 505 is fixedly installed at the bottom of the installation cover 202, the four chute frames 501 are equidistantly distributed outside the cold air distribution seat 505, the four arc-shaped air pipes 502 are movably installed inside the four chute frames 501, and one end of each of the four arc-shaped air pipes 502 is connected to the cold air distribution seat 505 through a telescopic hose. The drive shaft rod 507 is rotatably installed inside the cold air distribution seat 505, the spline rod 504 is fixedly installed on the top of the cold air distribution seat 505, an air inlet hole is provided inside the spline rod 504, a rotating shaft sleeve is fixedly installed on the top of the spline rod 504, and the rotating shaft sleeve can deliver the cold air inside the cold air distribution seat 505 to the internal heat dissipation mechanism 6 through the air inlet hole. The bottom of the drive shaft rod 507 is fixedly connected to the output end of the servo motor 506, and the servo motor 506 is fixedly installed on the top wall of the installation base 201;

[0033] It should be noted that a spline groove corresponding to the spline rod 504 is provided at the center of the chute disk 503. The chute disk 503 is connected to the spline rod 504 by a snap connection. Four arc-shaped chutes are provided inside the chute disk 503. The tops of one ends of the four arc-shaped air pipes 502 are respectively and movably connected to the four arc-shaped chutes through connecting rods. The air inlet hole and the rotating shaft sleeve in the spline rod 504 can guide the cold air to be delivered to the divergent flexible pipe 608 to ensure smooth gas flow. The function of the rotating shaft sleeve is not to affect the stable effect of the divergent flexible pipe 608 when the spline rod 504 rotates. The servo motor 506 serves as a power source and drives the spline rod 504 to rotate through the transmission shaft rod 507. The rotating spline rod 504 drives the chute disk 503 to rotate through the spline groove. The rotating chute disk 503 drives the four arc-shaped air pipes 502 to expand and contract through the cooperation of the four arc-shaped chutes and the connecting rods. When external heat dissipation is required, the four arc-shaped air pipes 502 are driven to expand, and the cold air inside the cold air distribution seat 505 is delivered to the expanded arc-shaped air pipes 502 through the telescopic hose. The cold air is delivered to the outside of the dry-type transformer assembly 3 through the expanded arc-shaped air pipes 502, and an external multi-channel flowing air flow is formed outside the dry-type transformer assembly 3. An air flow curtain is formed through the air flow. While using the flow of the air curtain to take away the heat outside the dry-type transformer assembly 3, the dust on the surface of the dry-type transformer assembly 3 is cleaned by the flow of the air curtain, achieving the function of automatically cleaning the dust and playing a good self-cleaning role in the use of the dry-type transformer. When internal heat dissipation is required, the cold air inside the cold air distribution seat 505 is delivered to the divergent flexible pipe 608 through the air inlet hole and the rotating shaft sleeve in the spline rod 504 to realize the delivery of the cold air. When external heat dissipation is not required, the four arc-shaped air pipes 502 are driven to contract inside the installation cover 202, and the installation cover 202 forms a dust-proof protection for the four arc-shaped air pipes 502.

[0034] As Figures 8 to 9As shown in the figure, the internal heat dissipation mechanism 6 is composed of a circular groove slide rail 601, eleven folding rods 602, twelve sliders 603, a chute shaft rod 604, a mounting bracket 605, a lead screw 606, a lead screw sleeve seat 607, a divergent flexible pipe 608, six spray nozzles 609 and a servo motor 610. Among them, the circular groove slide rail 601 is fixedly installed on the inner wall of the mounting cover 202, and the twelve sliders 603 are evenly distributed and movably connected inside the circular groove slide rail 601. And a spray nozzle 609 is fixedly installed on the top of every other slider 603. One side of the six spray nozzles 609 is connected to the divergent flexible pipe 608 through an axial sleeve, and the bottom of the divergent flexible pipe 608 is connected to the spline rod 504 through a rotating shaft sleeve; the bottom of eleven sliders 603 is movably connected to eleven folding rods 602 through bolts. The head and tail of every two adjacent folding rods 602 are connected by bolts to form an annular linkage frame. The annular linkage frame is movably installed at the bottom of the circular groove slide rail 601 through the slider 603. One end of the annular linkage frame is movably connected to one end of the chute shaft rod 604 through a bolt, and the chute shaft rod 604 is movably connected to another slider 603 through the internal chute; a mounting bracket 605 is fixedly installed on one side of the circular groove slide rail 601. A lead screw 606 is rotatably installed inside the mounting bracket 605. A lead screw sleeve seat 607 is sleeved on the outer side of the lead screw 606, and the lead screw sleeve seat 607 is movably installed inside the mounting bracket 605 through a slide rail. The bottom of the lead screw sleeve seat 607 is movably connected to the other end of the chute shaft rod 604 through a traction shaft rod. One end of the lead screw 606 is fixedly connected to the output end of the servo motor 610, and the servo motor 610 is fixedly installed on the front of the mounting bracket 605;

[0035] It should be noted that the sliders 603 are evenly distributed inside the circular groove slide rail 601. A spray head 609 is fixedly installed on the top of every other slider 603 for spraying cold air to cool the heating element; the divergent flexible pipe 608 evenly distributes and diffuses the cooling medium sprayed by the spray head 609 to enhance the cooling effect; the sliders 603 and the folding rods 602 are connected by bolts to form an annular linkage. By the movement of the sliders 603 in the circular groove slide rail 601, the annular linkage moves reciprocally along the inner wall of the circular groove slide rail 601; the servo motor 610 drives the screw rod 606 to rotate, causing the screw sleeve seat 607 to move reciprocally in a straight line along the slide rail inside the mounting frame 605. The reciprocally moving screw sleeve seat 607 drives the chute shaft rod 604 to move through the traction shaft rod. Through the cooperation of the traction shaft rod and the chute shaft rod 604, the annular linkage is driven to fold and unfold. The folding and unfolding of the annular linkage cause the sliders 603 to reciprocate in the circular groove slide rail 601, thereby driving the movement of the spray heads 609; the distribution of the six spray heads 609 is adjusted by the annular linkage to change the air flow path. When the annular linkage is unfolded, the six spray heads 609 are adjusted to be annularly unfolded, and the cold air conveyed by the divergent flexible pipe 608 is sprayed out by the six spray heads 609 to form an annular air duct, ensuring that the cold air fully covers the cooling air duct 302 to achieve full-coverage uniform heat dissipation. When the annular linkage is folded, the six spray heads 609 are adjusted to be fan-shaped folded, and the cold air conveyed by the divergent flexible pipe 608 is sprayed out by the six spray heads 609 to form a fan-shaped air duct for local rapid cooling of the key area, ensuring the stable operation of the dry-type transformer assembly 3 at a safe temperature.

[0036] As Figure 5 shown, the cold air supply mechanism 7 is composed of a cooling fan 701, a filter 702, a dryer 703, and a semiconductor refrigerator 704. The cooling fan 701 is installed on one side inside the mounting base 201 through a support frame. The filter 702 is fixedly installed at the air inlet end of the cooling fan 701. The dryer 703 is fixedly installed at the air outlet end of the cooling fan 701, and the semiconductor refrigerator 704 is fixedly installed on the top of the dryer 703. The air outlet end of the dryer 703 is respectively connected in through connection with three cold air distribution seats 505 by three pipes;

[0037] It should be noted that when the cooling fan 701 is powered on and operates to generate suction, it sucks in air through the cooling windows at both ends of the mounting base 201 after preliminary filtering of the air. The filter 702 effectively filters the air to prevent dust and impurities from entering. The filtered air enters the dryer 703, and the dryer 703 is used to reduce the moisture content in the air to avoid damage to electronic components caused by harmful moisture. At the same time, the semiconductor cooler 704 further reduces the temperature of the air passing through the dryer 703 through its efficient refrigeration effect to achieve more effective heat dissipation. Since the air outlet end of the dryer 703 is connected to three cold air distribution seats 505 through three pipes respectively, the cooled and dried air is evenly sent into the three cold air distribution seats 505, and then further distributed and transported through the cold air distribution seats 505 to achieve efficient supply of cold air.

[0038] As Figure 1 , Figure 3 , Figure 10 shown, the dry-type transformer assembly 3 is provided with equally spaced heat dissipation holes 301 at the top, and a cooling air duct 302 is arranged inside the dry-type transformer assembly 3;

[0039] It should be noted that the cooling air duct 302 guides the air flow to directly blow towards the heat source, reduces the diffusion of the air flow in irrelevant areas, improves the heat dissipation efficiency, and the cooling air duct 302 guides the cold air to enter from the bottom and discharge from the top heat dissipation holes 301, forming an effective air flow cycle of hot air rising and cold air descending. The air flow channel in the vertical direction more effectively dissipates the heat generated by the internal equipment, thereby improving the heat dissipation efficiency and ensuring that the temperature of the dry-type transformer assembly 3 is stable within a safe range.

[0040] As Figures 1 to 3 shown, a suspension bracket 4 is fixedly installed at the top of the three dry-type transformer assemblies 3, a heat dissipation cover 401 is fixedly installed inside the suspension bracket 4, and through holes corresponding to the heat dissipation holes 301 are provided at the bottom of the heat dissipation cover 401. Heat dissipation windows are embedded at both ends of the suspension bracket 4 and both ends of the mounting base 201;

[0041] It should be noted that the three dry-type transformer assemblies 3 are fixedly installed through the suspension brackets 4 at the top to ensure the stability of the equipment. The heat dissipation cover 401 fixedly installed inside the suspension bracket 4 can effectively block dust. At the same time, the through holes provided at the bottom thereof correspond to the heat dissipation holes 301 on the dry-type transformer assembly 3, which helps to dissipate heat. The heat dissipation windows embedded at both ends of the heat dissipation cover 401 provide a heat dissipation path and improve the heat dissipation efficiency, ensuring that heat can be quickly dissipated during operation, maintaining a lower temperature, and thus improving the reliability and service life of the equipment.

[0042] As Figures 1 to 4As shown in the figure, a chassis 1 is fixedly installed at the bottom of the heat dissipation base 2, and brackets 101 are fixedly installed on both sides of the bottom of the chassis 1. Movable wheels 102 are fixedly installed at both ends of the brackets 101;

[0043] It should be noted that the chassis 1 is connected with the movable wheels 102 through the brackets 101, enabling the transformer to be moved conveniently, which improves the convenience and flexibility of the transformer. Specifically, the chassis 1 provides a fixed base and support to ensure the stability and structural strength of the heat dissipation base 2. The brackets 101 are mainly used to install and secure the movable wheels 102, and the movable wheels 102 allow the transformer to roll easily on a plane, facilitating the handling of the heat dissipation base 2 and adapting to different working environments.

[0044] Based on the explanations and teachings in the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A dry-type transformer that can improve safety under high-load carrying conditions, comprising a heat dissipation base (2), three dry-type transformer components (3), three external heat dissipation mechanisms (5) and three internal heat dissipation mechanisms (6), characterized in that: The heat dissipation base (2) is composed of an installation base (201) and three installation covers (202). Among them, the three installation covers (202) are fixedly installed at equal intervals on the top of the installation base (201), and through openings are provided on the inner wall of the bottom of the installation cover (202). The three dry-type transformer assemblies (3) are respectively fixedly installed on the tops of the three installation covers (202). A cold air supply mechanism (7) is fixedly installed inside the installation base (201). The three external heat dissipation mechanisms (5) are respectively fixedly installed inside the three installation covers (202). The tops of the three external heat dissipation mechanisms (5) are respectively connected through rotating shaft sleeves to the three internal heat dissipation mechanisms (6) in a penetrating manner, and the three internal heat dissipation mechanisms (6) are respectively fixedly installed on the inner walls of the three installation covers (202). The cold air supply mechanism (7) is connected to the three external heat dissipation mechanisms (5) in a penetrating manner through three pipelines; The cold air supply mechanism (7) provides cold air for heat dissipation to the external heat dissipation mechanism (5) and the internal heat dissipation mechanism (6). When the dry-type transformer assembly (3) is operating at high load, the external heat dissipation mechanism (5) is driven to convey the cold air for heat dissipation to the outside of the dry-type transformer assembly (3) to form an air flow curtain for heat dissipation and dust cleaning on the outside of the dry-type transformer assembly (3); at the same time, the internal heat dissipation mechanism (6) starts to operate, conveys the cold air for heat dissipation to the inside of the dry-type transformer assembly (3), and forms an annular vertical air duct for uniform heat dissipation; when the internal heat dissipation mechanism (6) folds and operates, a fan-shaped vertical air duct is formed to strengthen the cooling of key areas; the combination of external heat dissipation on the outside of the external heat dissipation mechanism (5) and internal heat dissipation on the inside of the internal heat dissipation mechanism (6) is used to achieve efficient internal and external synchronous heat dissipation of the dry-type transformer assembly (3).

2. The dry-type transformer capable of improving safety under high-load carrying conditions according to claim 1, wherein: The external heat dissipation mechanism (5) is composed of four chute frames (501), four arc-shaped air pipes (502), a chute disc (503), a spline rod (504), a cold air distribution seat (505), a servo motor (506) and a drive shaft rod (507). Among them, the cold air distribution seat (505) is fixedly installed at the bottom of the installation cover (202). The four chute frames (501) are evenly distributed on the outside of the cold air distribution seat (505). The four arc-shaped air pipes (502) are movably installed inside the four chute frames (501), and one ends of the four arc-shaped air pipes (502) are connected to the cold air distribution seat (505) in a penetrating manner through telescopic hoses. The drive shaft rod (507) is rotatably installed inside the cold air distribution seat (505). The spline rod (504) is fixedly installed on the top of the cold air distribution seat (505). An air inlet hole is provided inside the spline rod (504). A rotating shaft sleeve is fixedly installed on the top of the spline rod (504). The rotating shaft sleeve can convey the cold air inside the cold air distribution seat (505) to the internal heat dissipation mechanism (6) through the air inlet hole. The bottom of the drive shaft rod (507) is fixedly connected to the output end of the servo motor (506), and the servo motor (506) is fixedly installed on the top wall of the installation base (201).

3. A dry-type transformer capable of improving safety under high-load carrying conditions according to claim 2, characterized in that: The internal heat dissipation mechanism (6) is composed of a circular groove slide rail (601), eleven folding rods (602), twelve sliders (603), a chute shaft rod (604), a mounting bracket (605), a lead screw (606), a lead screw sleeve seat (607), a divergent flexible pipe (608), six nozzles (609) and a servo motor (610). Among them, the circular groove slide rail (601) is fixedly installed on the inner wall of the mounting cover (202). The twelve sliders (603) are equidistantly distributed and movably connected inside the circular groove slide rail (601). And a nozzle (609) is fixedly installed on the top of every other slider (603). One side of the six nozzles (609) is connected to the divergent flexible pipe (608) through a shaft sleeve. And the bottom of the divergent flexible pipe (608) is connected to the spline rod (504) through a rotating shaft sleeve. Among them, the bottoms of the twelve sliders (603) are movably connected to the eleven folding rods (602) through shaft bolts. The head and tail of every two adjacent folding rods (602) are connected by shaft bolts to form an annular linkage frame. The annular linkage frame is movably installed at the bottom of the circular groove slide rail (601) through the slider (603). One end of the annular linkage frame is movably connected to one end of the chute shaft rod (604) through a shaft bolt. And the chute shaft rod (604) is movably connected to another slider (603) through the internal chute. One side of the circular groove slide rail (601) is fixedly installed with a mounting bracket (605). A lead screw (606) is rotatably installed inside the mounting bracket (605). A lead screw sleeve seat (607) is sleeved on the outside of the lead screw (606). And the lead screw sleeve seat (607) is movably installed inside the mounting bracket (605) through a slide rail. The bottom of the lead screw sleeve seat (607) is movably connected to the other end of the chute shaft rod (604) through a traction shaft rod. One end of the lead screw (606) is fixedly connected to the output end of the servo motor (610). And the servo motor (610) is fixedly installed on the front of the mounting bracket (605).

4. A dry-type transformer capable of improving safety under high-load carrying conditions according to claim 2, characterized in that: The cold air supply mechanism (7) is composed of a cooling fan (701), a filter (702), a dryer (703) and a semiconductor refrigerator (704). The cooling fan (701) is installed on one side inside the mounting base (201) through a support frame. The filter (702) is fixedly installed at the air inlet end of the cooling fan (701). The dryer (703) is fixedly installed at the air outlet end of the cooling fan (701). And the semiconductor refrigerator (704) is fixedly installed on the top of the dryer (703). The air outlet end of the dryer (703) is respectively connected to the three cold air distribution seats (505) through three pipes in a through manner.

5. A dry-type transformer capable of improving safety under high-load carrying conditions according to claim 1, characterized in that: The dry-type transformer assembly (3) is provided with equidistant heat dissipation holes (301) at the top. A cooling air duct (302) is arranged inside the dry-type transformer assembly (3).

6. The dry-type transformer capable of improving safety under high-load carrying conditions according to claim 5, wherein: A hanger (4) is fixedly installed at the top of the three dry-type transformer assemblies (3). A heat dissipation cover (401) is fixedly installed inside the hanger (4). A through hole corresponding to the heat dissipation hole (301) is opened at the bottom of the heat dissipation cover (401). Heat dissipation windows are embedded at both ends of the hanger (4) and both ends of the installation base (201).

7. A dry-type transformer capable of improving safety under high-load carrying conditions according to claim 1, characterized in that: A chassis (1) is fixedly installed at the bottom of the heat dissipation base (2). Brackets (101) are fixedly installed on both sides of the bottom of the chassis (1). Movable wheels (102) are fixedly installed at both ends of the brackets (101).

Images