Cooling structure of dry-type transformer

Abstract

The invention discloses a cooling structure of a dry-type transformer, and relates to the field of transformer cooling, the cooling structure comprises an equipment support arranged at the bottom of the transformer, a motor is fixedly connected to the equipment support, a driving gear is fixedly connected to a motor rotor, a heat dissipation assembly is arranged on one side above the equipment support, and the heat dissipation assembly is driven by the driving gear. During use, the motor is used for driving, the heat dissipation assembly can be driven to move, so that the temperature of the transformer is reduced, during use, the motor drives the heat dissipation fan to reciprocate along one side face of the transformer, heat dissipation can be conducted on different positions of the transformer, and meanwhile due to the existence of the connecting racks, the heat dissipation efficiency is improved. The direction of the guide plate can be changed when the turning gear is meshed with the connecting rack, cold air in different directions is alternately blown to the heat dissipation position, the heat dissipation efficiency is greatly improved, and the problem that the heat dissipation effect is poor due to the fact that the heat dissipation fan is always located at the high temperature is solved.

Description

Technical Field

[0001] The invention relates to the field of transformer cooling, in particular to a cooling structure for a dry-type transformer. Background Art

[0002] The transformer is a static electrical device that works on the principle of electromagnetic induction and can achieve voltage, current and impedance transformation. It is mainly composed of a primary coil, a secondary coil and an iron core. It uses the alternating magnetic field to induce electromotive force and realizes voltage rise and fall according to the coil turns ratio. Its structure includes windings, iron cores, oil tanks, and insulating sleeves. According to the purpose, it is divided into power, instrument, special transformers, etc. In the power system, it is the key to power transmission and distribution. In electronic equipment, it is also used for power supply and signal coupling circuits. It is an indispensable existence in the process of modern electrification.

[0003] During the operation of the transformer, resistance loss will be generated when the current passes through the winding, and the iron core will also generate hysteresis loss and eddy current loss under the action of the alternating magnetic field. These losses will be converted into heat, causing the temperature of the transformer to rise. If the heat is not dissipated in time, the excessively high temperature will accelerate the aging of the insulation material, reduce its insulation performance, and may cause faults such as short circuits, affecting the normal operation of the transformer. In addition, high temperature will also cause the internal parts of the transformer to expand and deform, shortening its service life, so the transformer must be cooled to ensure its stable and safe operation.

[0004] In traditional transformer heat dissipation methods, the movement flexibility of the heat dissipation components is poor, making it difficult to cool the transformer in an all-round and efficient manner. The heat dissipation fan of conventional heat dissipation equipment is fixed in position and is in a high temperature environment for a long time, and the heat dissipation efficiency continues to decrease. Moreover, the heat dissipation efficiency is greatly limited by relying only on airflow in a single direction. For this reason, those skilled in the art have proposed a cooling structure for dry-type transformers to solve the problems raised in the above background. Summary of the invention

[0005] The object of the present invention is to provide a cooling structure for a dry-type transformer to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A cooling structure for a dry-type transformer comprises an equipment bracket arranged at the bottom of the transformer, a motor is fixedly connected to the equipment bracket, a driving gear is fixedly connected to the motor rotor, a heat dissipation component is arranged on one side above the equipment bracket, and the heat dissipation component is driven by the driving gear.

[0008] As a further solution of the present invention: the heat dissipation component includes a longitudinal vertical shaft, a transmission gear is fixedly connected to the bottom of the longitudinal vertical shaft, a portal frame is fixedly connected to the equipment bracket, a horizontal shaft is rotatably connected to the portal frame, a driven gear is fixedly connected to the end of the horizontal shaft, the driven gear is meshed with the transmission gear, an incomplete gear is fixedly connected to the other end of the horizontal shaft, a follower is slidably connected to the equipment bracket, a plurality of transmission teeth are fixedly connected to the upper and lower sides of the inner side of the follower, the incomplete gear alternately meshes with the upper and lower transmission teeth during rotation, a fan mounting frame is fixedly connected to the top of the follower, and a cooling fan is fixedly connected to the fan mounting frame.

[0009] As a further solution of the present invention: a spring is fixedly connected to the top of the fan mounting frame, and a connecting rack for adjusting the heat dissipation wind direction is fixedly connected to the top of the spring.

[0010] As a further solution of the present invention: a symmetrical driving thread is arranged on the outer side of the longitudinal vertical shaft, a driving screw sleeve is threadedly connected to the outer side of the driving thread, a heat dissipation guide frame is slidably connected to the top of the door frame, two linkage parts are fixedly connected to the side of the heat dissipation guide frame close to the longitudinal vertical shaft, linkage rods are respectively connected to the driving screw sleeves on the corresponding sides, a plurality of door shafts are rotatably connected to the inner side of the heat dissipation guide frame, a guide plate is fixedly connected to the outer side of the door shaft, and a changing gear is fixedly connected to the top of the door shaft, and the changing gear cooperates with the connecting rack.

[0011] As a further solution of the present invention: a spiral blade is fixedly connected to the top of the longitudinal vertical shaft.

[0012] As a further solution of the present invention: the springs are arranged in a plurality of groups, and different springs do not contact each other during the movement of the connecting rack.

[0013] As a further solution of the present invention: the central angle of the toothed portion of the incomplete gear does not exceed 120°.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention has a simple structure and is easy to use. When in use, it is driven by a motor to drive the heat dissipation component to move, thereby cooling the temperature of the transformer. When in use, the motor drives the heat dissipation fan to reciprocate along one side of the transformer, and different positions of the transformer can be cooled. At the same time, due to the presence of the connecting rack, the direction of the guide plate will change when the changing gear is meshed with the connecting rack, and cold air from different directions will be blown alternately to the heat dissipation position, which greatly improves the heat dissipation efficiency and avoids the problems of the heat dissipation fan always being at a high temperature, the heat dissipation fan having a reduced life, and the poor heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a cooling structure of a dry-type transformer;

[0016] Figure 2 for Figure 1 A schematic diagram of a local enlarged structure;

[0017] Figure 3 It is a partial structural schematic diagram of the position of a fan mounting frame in a cooling structure of a dry-type transformer;

[0018] Figure 4 It is a partial structural schematic diagram of the position of the heat dissipation guide frame in the cooling structure of a dry-type transformer;

[0019] In the figure: 1. Equipment bracket; 2. Motor; 3. Driving gear; 4. Longitudinal vertical shaft; 5. Transmission gear; 6. Door frame; 7. Horizontal shaft; 8. Driven gear; 9. Incomplete gear; 10. Follower; 11. Transmission gear; 12. Fan mounting frame; 13. Spring; 14. Connecting rack; 15. Driving thread; 16. Driving screw sleeve; 17. Heat dissipation guide frame; 18. Linkage member; 19. Linkage rod; 20. Door shaft; 21. Guide plate; 22. Changing gear; 23. Spiral blade. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0024] Example 1: Please refer to Figure 1-3 A cooling structure for a dry-type transformer includes an equipment bracket 1 arranged at the bottom of the transformer, a motor 2 is fixedly connected to the equipment bracket 1, a driving gear 3 is fixedly connected to the rotor of the motor 2, a heat dissipation component is arranged on one side above the equipment bracket 1, and the heat dissipation component is driven by the driving gear 3.

[0025] The device is installed on the side of the transformer. Only one device can be installed, or multiple devices can be installed on different sides of the transformer at the same time. When in use, the motor 2 is turned on. After the motor 2 is turned on, it drives the driving gear 3 to rotate. The rotation of the driving gear 3 drives the heat dissipation component to work to achieve heat dissipation of the transformer.

[0026] The heat dissipation component includes a longitudinal vertical shaft 4, a transmission gear 5 is fixedly connected to the bottom of the longitudinal vertical shaft 4, a portal frame 6 is fixedly connected to the equipment bracket 1, a horizontal shaft 7 is rotatably connected to the portal frame 6, a driven gear 8 is fixedly connected to the end of the horizontal shaft 7, the driven gear 8 is meshed with the transmission gear 5, an incomplete gear 9 is fixedly connected to the other end of the horizontal shaft 7, a follower 10 is slidably connected to the equipment bracket 1, a plurality of transmission teeth 11 are fixedly connected to the upper and lower sides of the inner side of the follower 10, the incomplete gear 9 alternately meshes with the upper and lower transmission teeth 11 during rotation, a fan mounting frame 12 is fixedly connected to the top of the follower 10, and a heat dissipation fan is fixedly connected to the fan mounting frame 12.

[0027] The motor 2 drives the driving gear 3 to rotate, and the rotation of the driving gear 3 drives the transmission gear 5 to rotate, and the transmission gear 5 drives the driven gear 8 to rotate. The rotation of the driven gear 8 can drive the horizontal shaft 7 to rotate. During the rotation of the horizontal shaft 7, the incomplete gear 9 is driven to rotate. During the rotation of the incomplete gear 9, it is alternately meshed with the transmission teeth 11 on different sides of the upper and lower sides. During the driven process of the transmission teeth 11, the driven member 10 is driven to reciprocate. During the reciprocating motion of the driven member 10, the fan mounting frame 12 on the top thereof moves synchronously. A number of cooling fans are evenly fixed on the fan mounting frame 12. Since the cooling fans constantly change their relative positions with the transformer, sufficient heat dissipation can be guaranteed.

[0028] For example 2, please refer to Figure 4 The present embodiment has the following improvements on the basis of the previous embodiment: a spring 13 is fixedly connected to the top of the fan mounting frame 12, and a connecting rack 14 for adjusting the heat dissipation wind direction is fixedly connected to the top of the spring 13. A symmetrical driving thread 15 is arranged on the outer side of the longitudinal vertical shaft 4, and a driving screw sleeve 16 is threadedly connected to the outer side of the driving thread 15. A heat dissipation guide frame 17 is slidably connected to the top of the door frame 6. Two linkage members 18 are fixedly connected to the side of the heat dissipation guide frame 17 close to the longitudinal vertical shaft 4, and linkage rods 19 are connected between the linkage members 18 and the corresponding side driving screw sleeves 16, and a plurality of door shafts 20 are rotatably connected to the inner side of the heat dissipation guide frame 17, and a guide plate 21 is fixedly connected to the outer side of the door shaft 20. A direction-changing gear 22 is fixedly connected to the top of each of the door shafts 20, and the direction-changing gear 22 cooperates with the connecting rack 14.

[0029] During the rotation of the longitudinal vertical shaft 4, the driving thread 15 on its outer side will also rotate synchronously. The driving thread 15 drives the driving screw sleeve 16 to change its position, thereby further driving the heat dissipation guide frame 17 to continuously change its relative position with the transformer through the linkage rod 19 and the linkage member 18. When it is close to the transformer, the top change-direction gear 22 will engage with the connecting rack 14, and the connecting rack 14 moves back and forth in the state shown in the figure. When the change-direction gear 22 engages, it synchronously drives the change-direction gear 22 to rotate, and drives the guide plate 21 on the outer side of the door shaft 20 to rotate, and changes the direction of the guide plate 21, and then guides the airflow at different positions to the transformer position for heat dissipation, thereby improving the heat dissipation effect.

[0030] The top of the longitudinal vertical shaft 4 is fixedly connected with a spiral blade 23. The spiral blade 23 blows the cold air from the top to the bottom, thereby also improving the heat dissipation effect.

[0031] The springs 13 are arranged in a plurality of groups, and different springs 13 do not contact each other during the movement of the connecting rack 14 .

[0032] The central angle of the toothed portion of the incomplete gear 9 does not exceed 120°.

[0033] Working principle: The equipment is installed on the side of the transformer. Only one can be installed, or multiple can be installed on different sides of the transformer at the same time. When in use, the motor 2 is turned on. After the motor 2 is turned on, it drives the driving gear 3 to rotate. The rotation of the driving gear 3 drives the heat dissipation component to work to achieve heat dissipation of the transformer. The motor 2 drives the driving gear 3 to rotate. The rotation of the driving gear 3 drives the transmission gear 5 to rotate. The transmission gear 5 drives the driven gear 8 to rotate. The rotation of the driven gear 8 can drive the horizontal axis 7 to rotate. During the rotation of the horizontal axis 7, it drives the incomplete gear 9 to rotate. During the rotation of the incomplete gear 9, it alternately meshes with the transmission teeth 11 on different sides of the upper and lower sides. During the driven process, the transmission teeth 11 drive the driven member 10 to reciprocate. During the reciprocating motion of the driven member 10, the fan mounting frame 12 on the top moves synchronously. A number of cooling fans are evenly distributed and fixed on the fan mounting frame 12. Since the cooling fans constantly change their relative position with the transformer, sufficient heat dissipation can be guaranteed.

[0034] During the rotation of the longitudinal vertical shaft 4, the driving thread 15 on its outer side will also rotate synchronously. The driving thread 15 drives the driving screw sleeve 16 to change its position, thereby further driving the heat dissipation guide frame 17 to continuously change its relative position with the transformer through the linkage rod 19 and the linkage member 18. When it is close to the transformer, the top change-direction gear 22 will engage with the connecting rack 14, and the connecting rack 14 moves back and forth in the state shown in the figure. When the change-direction gear 22 engages, it synchronously drives the change-direction gear 22 to rotate, and drives the guide plate 21 on the outer side of the door shaft 20 to rotate, and changes the direction of the guide plate 21, and then guides the airflow at different positions to the transformer position for heat dissipation, thereby improving the heat dissipation effect.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cooling structure for a dry-type transformer, comprising an equipment support (1) arranged at the bottom of the transformer, a motor (2) being fixedly connected to the equipment support (1), and a driving gear (3) being fixedly connected to the rotor of the motor (2), characterized in that: A heat dissipation component is arranged on one side above the equipment bracket (1), and the heat dissipation component is driven by a driving gear (3).

2. The cooling structure of the dry-type transformer according to claim 1, characterized in that: The heat dissipation component comprises a longitudinal vertical shaft (4), the bottom of the longitudinal vertical shaft (4) is fixedly connected to a transmission gear (5), the equipment bracket (1) is fixedly connected to a door frame (6), the door frame (6) is rotatably connected to a horizontal shaft (7), the end of the horizontal shaft (7) is fixedly connected to a driven gear (8), the driven gear (8) is meshed with the transmission gear (5), the other end of the horizontal shaft (7) is fixedly connected to an incomplete gear (9), the equipment bracket (1) is slidably connected to a driven member (10), the upper and lower sides of the inner side of the driven member (10) are fixedly connected to a plurality of transmission teeth (11), the incomplete gear (9) alternately meshes with the upper and lower transmission teeth (11) during rotation, the top of the driven member (10) is fixedly connected to a fan mounting frame (12), and a heat dissipation fan is fixedly connected to the fan mounting frame (12).

3. The cooling structure of the dry-type transformer according to claim 2, characterized in that: A spring (13) is fixedly connected to the top of the fan mounting frame (12), and a connecting rack (14) for adjusting the heat dissipation wind direction is fixedly connected to the top of the spring (13).

4. The cooling structure of the dry-type transformer according to claim 3 is characterized in that: The outer side of the longitudinal vertical shaft (4) is provided with symmetrical driving threads (15), the outer side of the driving threads (15) is threadedly connected to a driving screw sleeve (16), the top of the door frame (6) is slidably connected to a heat dissipation guide frame (17), the heat dissipation guide frame (17) is fixedly connected to one side close to the longitudinal vertical shaft (4) with two linkage members (18), and linkage rods (19) are respectively connected between the linkage members (18) and the driving screw sleeves (16) on the corresponding sides, the inner side of the heat dissipation guide frame (17) is rotatably connected to a plurality of door shafts (20), the outer side of the door shafts (20) is fixedly connected to a guide plate (21), and the top of each door shaft (20) is fixedly connected to a direction-changing gear (22), and the direction-changing gear (22) cooperates with the connecting rack (14).

5. The cooling structure of the dry-type transformer according to claim 1, characterized in that: A spiral blade (23) is fixedly connected to the top of the longitudinal vertical shaft (4).

6. The cooling structure of the dry-type transformer according to claim 3, characterized in that: The springs (13) are arranged in a plurality of groups, and different springs (13) do not contact each other during the movement of the connecting rack (14).

7. The cooling structure of the dry-type transformer according to claim 1, characterized in that: The central angle of the toothed portion of the incomplete gear (9) does not exceed 120°.

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