Heat dissipation structure of box-type transformer

Abstract

The invention discloses a heat dissipation structure of a box-type transformer, and relates to the technical field of transformers, the heat dissipation structure comprises a transformer box, a box door is mounted on the transformer box, a transformation assembly is mounted in the transformer box, an air outlet straight pipe and an air inlet straight pipe are mounted on the bottom side of the transformer box, and hinge mechanisms are mounted on the bottom sides of the air outlet straight pipe and the air inlet straight pipe; according to the heat dissipation device for the shallow soil, through the arrangement of the air outlet straight pipe, the air inlet straight pipe, the heat dissipation coil pipe, the cross-shaped supporting frame and the like, heat insulation is achieved in shallow soil through conveying of the air outlet straight pipe and the air inlet straight pipe; the influence of shallow soil temperature fluctuation on heat dissipation is avoided, the heat dissipation process is conducted in deep soil with stable temperature through the heat dissipation coil pipe in a concentrated mode, the heat dissipation effect is improved, the heat exchange area is increased while the device adapts to soil sedimentation, the heat dissipation process is facilitated, and the heat dissipation effect is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and particularly to a heat dissipation structure for a box-type transformer. Background Art

[0002] A box-type transformer is organically composed of a transformer, high-voltage voltage control equipment, and low-voltage voltage control equipment. When it works, a large amount of heat is generated in the coil winding part. To meet the working efficiency of the transformer, it is usually necessary to cool it down. A heat dissipation structure for a box-type transformer disclosed in the patent with Chinese Patent Publication No. CN219642637U includes an iron core inside the box-type transformer, a primary winding and a secondary winding fixed at both ends of the iron core. Heat conduction grooves are arranged at equal distances on the outer walls of the top and bottom of the iron core, and a semiconductor refrigeration sheet is installed in the heat conduction grooves. Heat absorption plates are installed on both sides of the iron core, and fixing frames are installed at the top and bottom ends of the outer walls on both sides of the iron core. A sealed box is installed on the outer wall of the fixing frame. It has the advantages that the semiconductor refrigeration sheet directly dissipates heat from the iron core, the oil pump pumps oil into the hollow copper plate and cooperates with the radiator fan to cool the oil, which is convenient for reducing the temperature during operation, convenient for reducing the working environment temperature, and maintaining the working efficiency of the transformer.

[0003] In the prior art, the heat dissipation of box-type transformers is usually carried out by air-cooling or oil-immersion methods. Air-cooling mainly realizes heat exchange by accelerating the heat exchange between the air inside and outside the transformer box. In areas with high temperature and drought all year round, the surface air temperature is relatively high, resulting in insufficient heat dissipation effect. Although the heat dissipation effect of the oil-immersion method is good, the cost is high, the oil circuit system is complex, and there is a risk of oil leakage. We propose a heat dissipation structure for a box-type transformer. Summary of the Invention

[0004] The purpose of the present invention is to provide a heat dissipation structure for a box-type transformer to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A heat dissipation structure for a box-type transformer, comprising a transformer box, a box door is installed on the transformer box, a voltage transformation component is installed inside the transformer box, an air outlet straight pipe and an air inlet straight pipe are installed on the bottom side of the transformer box, hinge mechanisms are installed on the bottom sides of the air outlet straight pipe and the air inlet straight pipe respectively, both ends of a heat dissipation coil are installed on the two hinge mechanisms respectively, the top end of the heat dissipation coil is installed on the hinge mechanism of the air outlet straight pipe, the bottom end of the heat dissipation coil is installed on the hinge mechanism of the air inlet straight pipe, a support mechanism for increasing the support force and assisting heat dissipation is installed on the heat dissipation coil, an air outlet filtering mechanism for preventing dust from entering is installed on the air outlet straight pipe, a Venturi mechanism for accelerating air exchange is installed on the air inlet straight pipe, a scraping mechanism for self-cleaning is installed on the Venturi mechanism, and the scraping mechanism is installed on the air outlet filtering mechanism. When using this box-type transformer in arid areas, the air outlet straight pipe and the air inlet straight pipe are buried underground, and heat dissipation is carried out through the underground soil. The air outlet filtering mechanism is started, and the filtered hot air is extracted through the air outlet straight pipe, reaches the heat dissipation coil through the hinge mechanism for centralized heat dissipation, and after reaching the bottom end of the heat dissipation coil, it flows back into the transformer box through the air inlet straight pipe to complete heat dissipation, thereby realizing the process of centralized heat absorption in the transformer box, heat insulation in the shallow soil layer, and centralized heat dissipation in the deep soil layer. During this process, through the setting of the hinge mechanism and the support mechanism, the support force of the heat dissipation coil itself is made more stable, and it can be offset at a small angle on the air outlet straight pipe and the air inlet straight pipe, so as to reduce the risk of bending and deformation of the heat dissipation coil caused by soil settlement during long-term use, and further improve the scientificity and practicality of the structure. Through the setting of the Venturi mechanism, the cold air after heat dissipation automatically sucks in the hot air near the Venturi mechanism when passing through, accelerating the air heat exchange process, which is beneficial to improving the heat dissipation effect in the transformer box. Through the setting of the air outlet filtering mechanism and the scraping mechanism, dust is prevented from entering the heat dissipation coil to affect the heat dissipation effect, and the service life and practicality of the structure are extended.

[0006] Furthermore, cavities are provided on both the air outlet straight pipe and the air inlet straight pipe, and heat insulation materials are filled in the cavities. The heat insulation materials are composed of polyurethane foam materials. The polyurethane foam materials are filled in the cavities, so as to prevent air from dissipating heat in the shallow soil when passing through the air outlet straight pipe, thereby preventing the soil on one side of the air outlet straight pipe from warming up and the soil temperature on the other side of the air inlet straight pipe remaining unchanged, resulting in uneven soil settlement. At the same time, it prevents the air from exchanging heat with the shallow soil when passing through the air inlet straight pipe, so that the air after heat dissipation becomes hot again, affecting the heat dissipation effect in the transformer box.

[0007] Furthermore, the two hinge mechanisms include two wrapping spherical shells which are respectively installed at both ends of the heat dissipation coil pipe. An movable spherical shell is movably installed in each of the two wrapping spherical shells. The movable spherical shell on the top end of the heat dissipation coil pipe is installed on the air outlet straight pipe, and the movable spherical shell on the bottom end of the heat dissipation coil pipe is installed on the air inlet straight pipe. Installation ring grooves are formed on both of the two wrapping spherical shells, and gaskets are installed in both of the two installation ring grooves. Both of the two gaskets are in contact with the movable spherical shell. When the soil subsides, compensation is carried out through the rotation of the movable spherical shell in the wrapping spherical shell. Compared with rigid connection, the risk of deformation and fracture of the heat dissipation coil pipe is greatly reduced, and the scientific nature of the structure is improved.

[0008] Furthermore, a cross brace is installed inside the heat dissipation coil pipe, and a sliding sleeve rib plate is installed on the heat dissipation coil pipe. A bottom rib plate is slidably installed on the sliding sleeve rib plate, and the bottom rib plate is installed on the outer wall of the heat dissipation coil pipe adjacent to the bottom side of the sliding sleeve rib plate. The cross brace increases the inner wall support force of the heat dissipation coil pipe to prevent it from collapsing and flattening. The sliding sleeve rib plate and the bottom rib plate increase the support force between adjacent channels of the heat dissipation coil pipe to prevent deformation. In addition, the sliding sleeve rib plate, the bottom rib plate and the cross brace increase the contact area, which is beneficial to the heat exchange process and further improves the heat dissipation effect. It should be noted that the sliding sleeve rib plate, the bottom rib plate and the heat dissipation coil pipe can be made of copper alloy.

[0009] Furthermore, a limiting sliding shaft is installed on the sliding sleeve rib plate, and a limiting sliding cavity is formed on the bottom rib plate. The limiting sliding shaft is slidably installed in the limiting sliding cavity, and a spring is movably sleeved on the limiting sliding shaft. When slight deformation occurs between adjacent channels of the heat dissipation coil pipe, compensation can be carried out by sliding the limiting sliding shaft in the limiting sliding cavity to compress the spring, preventing the heat dissipation coil pipe from cracking due to direct rigid contact, and further improving the scientific nature of the structure.

[0010] Furthermore, the air outlet filtering mechanism includes an air suction fan which is installed on the air outlet straight pipe. A bell mouth is installed on the air suction fan, and a filter plate is installed on the bell mouth. A collection groove is formed on the filter plate. Through the arrangement of the filter plate, when the air suction fan sucks in hot air, dust and other impurities are filtered by the filter plate to prevent dust and other impurities from entering the heat dissipation coil pipe and affecting the heat dissipation effect.

[0011] Further, a connecting shaft is installed on the output main shaft of the suction fan. The connecting shaft is rotatably installed on the filter plate. A tapered tooth is installed on the connecting shaft, and a limit sheath is installed on the filter plate. A transmission shaft is rotatably installed in the limit sheath. One end of the transmission shaft is installed with an adapter gear, and the adapter gear meshes with the tapered tooth. The other end of the transmission shaft is installed with a transmission gear. A gear disc is rotatably installed on the top side of the bell mouth, and the gear disc meshes with the transmission gear. A connecting plate is installed on the gear disc, and a transmission column is installed on the connecting plate. A straight groove slide plate is slidably installed on the transmission column. The length of the straight groove of the straight groove slide plate is longer than the outer diameter of the bell mouth. A flexible brush is installed on the bottom side of the straight groove slide plate, and the flexible brush contacts the filter plate. A sliding frame is installed on the straight groove slide plate, and the sliding frame is slidably installed on the bottom inner wall of the transformer box. The main shaft of the suction fan rotates to suck hot air in through the rotation of the fan blades and drives the connecting shaft to rotate at the same time. The rotation of the connecting shaft drives the transmission shaft to rotate in the limit sheath through the cooperation of the tapered tooth and the adapter gear. The rotation of the transmission shaft drives the transmission gear to rotate, and the rotation of the transmission gear drives the gear disc to slowly rotate on the bell mouth. When the gear disc rotates, it drives the connecting plate and the transmission column to slowly rotate. The rotation of the transmission column drives the straight groove slide plate to reciprocate on the top side of the filter plate, thereby driving the flexible brush to sweep the dust and other impurities accumulated on the filter plate into the collection tank, preventing the filter plate from being blocked, and facilitating the continuous heat dissipation process.

[0012] Further, a grinding ball block is installed on the transmission column. The grinding ball block is located at the bottom side of the straight groove slide plate, and the grinding ball block contacts the flexible brush. Through the setting of the grinding ball block, when the transmission column slides in the long groove of the straight groove slide plate, it slides on the flexible brush, thereby completing the self-cleaning process of the flexible brush, and further improving the practicability and scientificity of the structure.

[0013] Further, the Venturi mechanism includes a reduced-diameter pipe installed on the intake straight pipe. A throat pipe is installed on the reduced-diameter pipe. An air suction port is opened on the throat pipe. An enlarged-diameter pipe is installed on the throat pipe. Filter meshes are installed on both the enlarged-diameter pipe and the air suction port. The enlarged-diameter pipe is located at the bottom side of the straight groove slide plate. Through the setting of the Venturi mechanism, when the air after heat dissipation enters the throat pipe through the reduced-diameter pipe and is discharged into the transformer box through the enlarged-diameter pipe, the air flow rate at the throat pipe becomes faster, thereby forming a negative pressure to press the hot air in the transformer box into the throat pipe, accelerating the air heat exchange process, and facilitating the heat dissipation process.

[0014] Further, the scraping wall mechanism includes a scraping wall ring frame rotatably installed on the throat pipe. A rotating plate is installed on the scraping wall ring frame. A rotating shaft block is installed on the rotating plate. A rotating shaft sleeve is rotatably installed on the rotating shaft block. A transmission rod is installed on the rotating shaft sleeve. The transmission rod is located at the top side of the enlarged-diameter pipe. The transmission rod is installed on the straight groove slide plate. During the reciprocating sliding of the straight groove slide plate, the rotating plate and the scraping wall ring frame are driven to rotate on the throat pipe through the transmission rod, so that the scraping wall ring frame scrapes the filter mesh on the throat pipe during rotation, further improving the scientificity of the structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] In the present invention, through the settings of the air outlet straight pipe, the air inlet straight pipe, the heat dissipation coil pipe, etc., heat insulation is realized by using the transportation of the air outlet straight pipe and the air inlet straight pipe in the shallow soil, avoiding the influence of the temperature fluctuation of the shallow soil on heat dissipation, and the heat dissipation process is concentrated through the heat dissipation coil pipe in the soil with stable deep temperature, thus improving the heat dissipation effect.

[0017] In the present invention, through the settings of the cross brace, the sliding sleeve rib plate, the bottom rib plate, the wrapping spherical shell, the movable spherical shell, etc., while increasing the supporting force of the heat dissipation coil pipe and compensating to adapt to soil settlement, the heat exchange area is increased, which is beneficial to the heat dissipation process and further improves the heat dissipation effect.

[0018] In the present invention, through the settings of the reduced diameter pipe, the throat pipe, the enlarged diameter pipe, the air suction port, etc., during the process that the air after heat dissipation enters the throat pipe through the reduced diameter pipe and is discharged into the transformer box through the enlarged diameter pipe, the air flow velocity at the throat pipe becomes faster, so that the negative pressure formed presses the hot air in the transformer box into the throat pipe, accelerating the air heat exchange process and being beneficial to the heat dissipation process.

[0019] In the present invention, through the settings of the filter screen, the filter plate, the flexible brush, the straight groove slide plate, the scraping wall ring frame, etc., during the air suction process of the suction fan, the filter plate on the air outlet straight pipe nozzle and the filter screen on the air inlet straight pipe are respectively cleaned of dust, ensuring the normal operation of the filter plate and the filter screen, and further improving the convenience and practicality of the structure in use.

[0020] In the present invention, through the setting of the grinding ball block, during the sliding process of the transmission column in the long groove of the straight groove slide plate, it slides on the flexible brush, thereby completing the self-cleaning process of the flexible brush, and further improving the practicality and scientific nature of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic diagram of the structure of the present invention with the box door hidden;

[0023] Figure 3 is a schematic cross-sectional structure diagram of the wrapping spherical shell of the present invention;

[0024] Figure 4 is a schematic partial cross-sectional structure diagram of the heat dissipation coil pipe of the present invention;

[0025] Figure 5 is Figure 4 a schematic diagram of the structure of part A in

[0026] Figure 6Schematic diagram of the partial sectional structure of the transformer box of the present invention;

[0027] Figure 7 Schematic diagram of the sectional structure of the bell mouth of the present invention;

[0028] Figure 8 Schematic diagram of the structure of the throat pipe of the present invention;

[0029] Figure 9 Schematic diagram of the structure of the straight groove slide plate of the present invention.

[0030] In the figure: 1. Transformer box; 2. Outlet straight pipe; 3. Inlet straight pipe; 4. Heat dissipation coil; 5. Hinge mechanism; 501. Wrapping spherical shell; 502. Movable spherical shell; 503. Installation ring groove; 504. Sealing gasket; 6. Support mechanism; 601. Cross support; 602. Sliding sleeve rib; 603. Bottom rib; 604. Limit sliding shaft; 605. Limit sliding cavity; 606. Spring; 7. Outlet filtering mechanism; 701. Suction fan; 702. Bell mouth; 703. Filter plate; 704. Collection tank; 705. Connecting shaft; 706. Tapered tooth; 707. Limit sheath; 708. Transmission shaft; 709. Adaptor gear; 710. Transmission gear; 711. Gear disc; 712. Connecting plate; 713. Transmission column; 714. Straight groove slide plate; 715. Flexible brush; 716. Sliding frame; 717. Grinding ball block; 8. Venturi mechanism; 801. Reducing pipe; 802. Throat pipe; 803. Flaring pipe; 804. Suction port; 805. Filter screen; 9. Wall scraping mechanism; 901. Wall scraping ring frame; 902. Rotating plate; 903. Rotating shaft block; 904. Rotating shaft sleeve; 905. Transmission rod; 10. Cavity; 11. Heat insulating material; 12. Voltage transformation component; 13. Box door. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1 - 9, A heat dissipation structure of a box-type transformer in the illustration, including a transformer box 1, a box door 13 is installed on the transformer box 1, a voltage transformation component 12 is installed inside the transformer box 1, an air outlet straight pipe 2 and an air inlet straight pipe 3 are installed on the bottom side of the transformer box 1, hinge mechanisms 5 are installed on the bottom sides of the air outlet straight pipe 2 and the air inlet straight pipe 3 respectively, and both ends of a heat dissipation coil 4 are installed on the two hinge mechanisms 5. The top end of the heat dissipation coil 4 is installed on the hinge mechanism 5 of the air outlet straight pipe 2, and the bottom end of the heat dissipation coil 4 is installed on the hinge mechanism 5 of the air inlet straight pipe 3. A support mechanism 6 for increasing the support force and assisting heat dissipation is installed on the heat dissipation coil 4. An air outlet filtering mechanism 7 for preventing dust from entering is installed on the air outlet straight pipe 2. A Venturi mechanism 8 for accelerating air exchange is installed on the air inlet straight pipe 3. A scraping mechanism 9 for self-cleaning is installed on the Venturi mechanism 8, and the scraping mechanism 9 is installed on the air outlet filtering mechanism 7. When using this box-type transformer in arid areas, the air outlet straight pipe 2 and the air inlet straight pipe 3 are buried underground, and heat dissipation is carried out through the underground soil. The air outlet filtering mechanism 7 is started, and the filtered hot air is extracted through the air outlet straight pipe 2, reaches the heat dissipation coil 4 through the hinge mechanism 5 for centralized heat dissipation, and after reaching the bottom end of the heat dissipation coil 4, it flows back into the transformer box 1 through the air inlet straight pipe 3 to complete heat dissipation, thus realizing the process of centralized heat absorption in the transformer box 1, heat insulation in the shallow soil, and centralized heat dissipation in the deep soil. During this process, through the settings of the hinge mechanism 5 and the support mechanism 6, the support force of the heat dissipation coil 4 itself is made more stable and it can deflect at a small angle on the air outlet straight pipe 2 and the air inlet straight pipe 3 to reduce the risk of bending and deformation of the heat dissipation coil 4 caused by soil settlement during long-term use, further improving the scientificity and practicality of the structure. Through the setting of the Venturi mechanism 8, the cold air after heat dissipation automatically inhales the hot air near the Venturi mechanism 8 when passing through, accelerating the air heat exchange process, which is beneficial to improving the heat dissipation effect inside the transformer box 1. Through the settings of the air outlet filtering mechanism 7 and the scraping mechanism 9, dust is prevented from entering the heat dissipation coil 4 to affect the heat dissipation effect, and the service life and practicality of the structure are extended.

[0033] Referring to Figures 1 - 3 , In the embodiment of the present invention, cavities 10 are provided on both the air outlet straight pipe 2 and the air inlet straight pipe 3, and heat insulation materials 11 are filled in the cavities 10. The heat insulation materials 11 are composed of polyurethane foam materials. The polyurethane foam materials are filled in the cavities 10, so that when air passes through the air outlet straight pipe 2, it prevents air from dissipating heat in the shallow soil, thereby preventing the soil on one side of the air outlet straight pipe 2 from warming up and the soil temperature on the side of the air inlet straight pipe 3 remaining unchanged, resulting in uneven soil settlement. At the same time, when air passes through the air inlet straight pipe 3, it prevents heat exchange with the shallow soil, so that the heat-dissipated air becomes hot again, affecting the heat dissipation effect inside the transformer box 1.

[0034] Referring to Figures 1 - 4, in the embodiment of the present invention, the two hinge mechanisms 5 include two wrapping spherical shells 501, the two wrapping spherical shells 501 are respectively installed at both ends of the heat dissipation coil 4, and movable spherical shells 502 are movably installed in both of the two wrapping spherical shells 501. The movable spherical shell 502 on the top end of the heat dissipation coil 4 is installed on the air outlet straight pipe 2, and the movable spherical shell 502 on the bottom end of the heat dissipation coil 4 is installed on the air inlet straight pipe 3. Installation ring grooves 503 are formed on both of the two wrapping spherical shells 501, and sealing gaskets 504 are installed in both of the two installation ring grooves 503. Both of the two sealing gaskets 504 are in contact with the movable spherical shell 502. When the soil subsides, compensation is carried out through the rotation of the movable spherical shell 502 in the wrapping spherical shell 501. Compared with rigid connection, the risk of deformation and fracture of the heat dissipation coil 4 is greatly reduced, and the scientificity of the structure is improved.

[0035] Refer to Figures 1 - 5 , in the embodiment of the present invention, a cross brace 601 is installed in the heat dissipation coil 4, a sliding sleeve rib plate 602 is installed on the heat dissipation coil 4, a bottom rib plate 603 is slidably installed on the sliding sleeve rib plate 602, and the bottom rib plate 603 is installed on the outer wall of the heat dissipation coil 4 adjacent to the bottom side of the sliding sleeve rib plate 602. The inner wall supporting force of the heat dissipation coil 4 is increased through the cross brace 601 to prevent collapse and flattening, and the supporting force between adjacent channels of the heat dissipation coil 4 is increased through the sliding sleeve rib plate 602 and the bottom rib plate 603 to prevent deformation. In addition, through the sliding sleeve rib plate 602, the bottom rib plate 603 and the cross brace 601, the contact area is increased, which is beneficial to the heat exchange process and further improves the heat dissipation effect. It should be noted that the sliding sleeve rib plate 602, the bottom rib plate 603 and the heat dissipation coil 4 can be made of copper alloy.

[0036] Refer to Figures 1 - 5 , in the embodiment of the present invention, a limiting sliding shaft 604 is installed on the sliding sleeve rib plate 602, a limiting sliding cavity 605 is formed on the bottom rib plate 603, the limiting sliding shaft 604 is slidably installed in the limiting sliding cavity 605, and a spring 606 is movably sleeved on the limiting sliding shaft 604. When slight deformation occurs between adjacent channels of the heat dissipation coil 4, compensation can be carried out by sliding the limiting sliding shaft 604 in the limiting sliding cavity 605 to compress the spring 606, preventing the heat dissipation coil 4 from cracking due to direct rigid contact, and further improving the scientificity of the structure.

[0037] Refer to Figures 1 - 9 , in the embodiment of the present invention, the air outlet filtering mechanism 7 includes a suction fan 701, the suction fan 701 is installed on the air outlet straight pipe 2, a flared mouth 702 is installed on the suction fan 701, a filter plate 703 is installed on the flared mouth 702, and a collection groove 704 is formed on the filter plate 703. Through the arrangement of the filter plate 703, when the suction fan 701 sucks in hot air, dust and other impurities are filtered by the filter plate 703 to prevent dust and other impurities from entering the heat dissipation coil 4 and affecting the heat dissipation effect.

[0038] Refer toFigures 1 - 9 In an embodiment of the present invention, a connecting shaft 705 is installed on the output main shaft of the suction fan 701. The connecting shaft 705 is rotatably installed on the filter plate 703. A conical tooth 706 is installed on the connecting shaft 705. A limit sheath 707 is installed on the filter plate 703. A transmission shaft 708 is rotatably installed in the limit sheath 707. One end of the transmission shaft 708 is installed with an adapter gear 709, and the adapter gear 709 meshes with the conical tooth 706. The other end of the transmission shaft 708 is installed with a transmission gear 710. A gear disc 711 is rotatably installed on the top side of the bell mouth 702. The gear disc 711 meshes with the transmission gear 710. A connecting plate 712 is installed on the gear disc 711. A transmission column 713 is installed on the connecting plate 712. A straight groove slide plate 714 is slidably installed on the transmission column 713. The straight groove length of the straight groove slide plate 714 is longer than the outer diameter of the bell mouth 702. A flexible brush 715 is installed on the bottom side of the straight groove slide plate 714. The flexible brush 715 is in contact with the filter plate 703. A sliding frame 716 is installed on the straight groove slide plate 714. The sliding frame 716 is slidably installed on the bottom inner wall of the transformer box 1. The main shaft of the suction fan 701 rotates to suck in hot air through the rotation of the fan blades and at the same time drives the connecting shaft 705 to rotate. The rotation of the connecting shaft 705 drives the transmission shaft 708 to rotate in the limit sheath 707 through the cooperation of the conical tooth 706 and the adapter gear 709. The rotation of the transmission shaft 708 drives the transmission gear 710 to rotate. The rotation of the transmission gear 710 drives the gear disc 711 to slowly rotate on the bell mouth 702. When the gear disc 711 rotates, it drives the connecting plate 712 and the transmission column 713 to slowly rotate. The rotation of the transmission column 713 drives the straight groove slide plate 714 to reciprocally slide on the top side of the filter plate 703, thereby driving the flexible brush 715 to sweep the dust and other impurities accumulated on the filter plate 703 into the collection tank 704, preventing the filter plate 703 from being blocked, and facilitating the continuous heat dissipation process.

[0039] Refer to Figures 1 - 9 In an embodiment of the present invention, a grinding ball block 717 is installed on the transmission column 713. The grinding ball block 717 is located on the bottom side of the straight groove slide plate 714. The grinding ball block 717 is in contact with the flexible brush 715. Through the setting of the grinding ball block 717, it is realized that the grinding ball block 717 slides on the flexible brush 715 during the sliding process of the transmission column 713 in the long groove of the straight groove slide plate 714, thereby completing the self-cleaning process of the flexible brush 715, and further improving the practicality and scientific nature of the structure.

[0040] Refer to Figures 1 - 8, in the embodiment of the present invention, the Venturi mechanism 8 includes a converging pipe 801, the converging pipe 801 is installed on the intake straight pipe 3, a throat pipe 802 is installed on the converging pipe 801, an air suction port 804 is formed on the throat pipe 802, a diverging pipe 803 is installed on the throat pipe 802, filter meshes 805 are installed on both the diverging pipe 803 and the air suction port 804, the diverging pipe 803 is located at the bottom side of the straight groove slide plate 714. Through the arrangement of the Venturi mechanism 8, when the heat-dissipated air enters the throat pipe 802 through the converging pipe 801 and is discharged into the transformer tank 1 through the diverging pipe 803, the air flow velocity at the throat pipe 802 becomes faster, so that the negative pressure formed presses the hot air in the transformer tank 1 into the throat pipe 802, accelerating the air heat exchange process and being beneficial to the heat dissipation process.

[0041] Refer to Figures 1 - 9 , in the embodiment of the present invention, the wall scraping mechanism 9 includes a wall scraping ring frame 901, the wall scraping ring frame 901 is rotatably installed on the throat pipe 802, a rotating plate 902 is installed on the wall scraping ring frame 901, a rotating shaft block 903 is installed on the rotating plate 902, a rotating shaft sleeve 904 is rotatably installed on the rotating shaft block 903, a transmission rod 905 is installed on the rotating shaft sleeve 904, the transmission rod 905 is located at the top side of the diverging pipe 803, the transmission rod 905 is installed on the straight groove slide plate 714. During the reciprocating sliding of the straight groove slide plate 714, the rotating plate 902 and the wall scraping ring frame 901 are driven to rotate on the throat pipe 802 through the transmission rod 905, so that the wall scraping ring frame 901 scrapes the filter mesh 805 on the throat pipe 802 during rotation, further improving the scientific nature of the structure.

[0042] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation structure of a box-type transformer, comprising a transformer box (1), a box door (13) being installed on the transformer box (1), and a transformer assembly (12) being installed in the transformer box (1), characterized in that: The bottom side of the transformer box (1) is provided with an outlet straight pipe (2) and an inlet straight pipe (3), and the bottom sides of the outlet straight pipe (2) and the inlet straight pipe (3) are both provided with hinged mechanisms (5), and two ends of a heat dissipation coil (4) are respectively provided on the two hinged mechanisms (5), the top end of the heat dissipation coil (4) is provided on the hinged mechanism (5) of the outlet straight pipe (2), and the bottom end of the heat dissipation coil (4) is provided on the hinged mechanism (5) of the inlet straight pipe (3), and a support mechanism (6) for increasing support force and assisting heat dissipation is provided on the heat dissipation coil (4), an outlet filter mechanism (7) for preventing dust from entering is provided on the outlet straight pipe (2), and a Venturi mechanism (8) for accelerating air exchange is provided on the inlet straight pipe (3), and a wall scraping mechanism (9) for self-cleaning is provided on the Venturi mechanism (8), and the wall scraping mechanism (9) is provided on the outlet filter mechanism (7).

2. The heat dissipation structure of a box-type transformer according to claim 1 is characterized in that: The air outlet straight pipe (2) and the air inlet straight pipe (3) are both provided with a cavity (10), and the cavity (10) is filled with a heat insulating material (11), and the heat insulating material (11) is composed of a polyurethane foam material.

3. The heat dissipation structure of a box-type transformer according to claim 2 is characterized in that: The two hinge mechanisms (5) include two wrapping spherical shells (501), the two wrapping spherical shells (501) are respectively mounted at the two ends of the heat dissipation coil (4), and a movable spherical shell (502) is movably mounted in each of the two wrapping spherical shells (501). The movable spherical shell (502) on the top end of the heat dissipation coil (4) is mounted on the air outlet straight pipe (2), and the movable spherical shell (502) on the bottom end of the heat dissipation coil (4) is mounted on the air inlet straight pipe (3). Both wrapping spherical shells (501) are provided with mounting ring grooves (503), and sealing gaskets (504) are mounted in each of the two mounting ring grooves (503). Both sealing gaskets (504) are in contact with the movable spherical shells (502).

4. The heat dissipation structure of a box-type transformer according to claim 3 is characterized in that: A cross support (601) is installed in the heat dissipation coil (4), a sliding sleeve rib (602) is installed on the heat dissipation coil (4), a bottom rib (603) is slidably installed on the sliding sleeve rib (602), and the bottom rib (603) is installed on the outer wall of the heat dissipation coil (4) adjacent to the bottom side of the sliding sleeve rib (602).

5. The heat dissipation structure of a box-type transformer according to claim 4 is characterized in that: A limited sliding shaft (604) is installed on the sliding sleeve rib plate (602), a limited sliding cavity (605) is provided on the bottom rib plate (603), the limited sliding shaft (604) is slidably installed in the limited sliding cavity (605), and a spring (606) is movably sleeved on the limited sliding shaft (604).

6. The heat dissipation structure of a box-type transformer according to claim 3 is characterized in that: The air outlet filtering mechanism (7) comprises a suction fan (701), which is mounted on the air outlet straight pipe (2), a bell mouth (702) is mounted on the suction fan (701), a filter plate (703) is mounted on the bell mouth (702), and a collection groove (704) is provided on the filter plate (703).

7. The heat dissipation structure of a box-type transformer according to claim 6, characterized in that: The output main shaft of the suction fan (701) is provided with a connecting shaft (705), the connecting shaft (705) is rotatably mounted on the filter plate (703), a conical tooth (706) is mounted on the connecting shaft (705), a limiting sleeve (707) is mounted on the filter plate (703), a transmission shaft (708) is rotatably mounted in the limiting sleeve (707), one end of the transmission shaft (708) is provided with an adapting gear (709), the adapting gear (709) is meshed with the conical tooth (706), the other end of the transmission shaft (708) is provided with a transmission gear (710), and a gear plate (711) is rotatably mounted on the top side of the bell mouth (702) The gear plate (711) is meshed with the transmission gear (710), a connecting plate (712) is installed on the gear plate (711), a transmission column (713) is installed on the connecting plate (712), a straight groove slide plate (714) is slidably installed on the transmission column (713), the straight groove length of the straight groove slide plate (714) is longer than the outer diameter of the bell mouth (702), a flexible scraping brush (715) is installed on the bottom side of the straight groove slide plate (714), the flexible scraping brush (715) is in contact with the filter plate (703), a sliding frame (716) is installed on the straight groove slide plate (714), and the sliding frame (716) is slidably installed on the bottom inner wall of the transformer box (1).

8. The heat dissipation structure of a box-type transformer according to claim 7, characterized in that: A grinding ball block (717) is installed on the transmission column (713), the grinding ball block (717) is located on the bottom side of the straight groove slide plate (714), and the grinding ball block (717) is in contact with the flexible scraping brush (715).

9. The heat dissipation structure of a box-type transformer according to claim 7, characterized in that: The venturi mechanism (8) comprises a constricted pipe (801), the constricted pipe (801) being mounted on the air inlet straight pipe (3), a throat pipe (802) being mounted on the constricted pipe (801), an air inlet (804) being provided on the throat pipe (802), an expanding pipe (803) being mounted on the throat pipe (802), a filter screen (805) being mounted on both the expanding pipe (803) and the air inlet (804), and the expanding pipe (803) being located on the bottom side of the straight groove slide plate (714).

10. The heat dissipation structure of a box-type transformer according to claim 8, characterized in that: The wall scraping mechanism (9) comprises a wall scraping ring frame (901), the wall scraping ring frame (901) is rotatably mounted on the throat pipe (802), a rotating plate (902) is mounted on the wall scraping ring frame (901), a rotating shaft block (903) is mounted on the rotating plate (902), a rotating shaft sleeve (904) is rotatably mounted on the rotating shaft block (903), a transmission rod (905) is mounted on the rotating shaft sleeve (904), the transmission rod (905) is located on the top side of the expanded pipe (803), and the transmission rod (905) is mounted on the straight groove slide plate (714).

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