Dry-type transformer

Abstract

The utility model discloses a dry-type transformer, and relates to the technical field of transformers. The arc-shaped support slides on the pulleys arranged on the fixing blocks, the arc-shaped support and the inner wall of the protection box are fixed through the reserved bolt holes, during installation, the installation frame is limited through an auxiliary positioning mechanism composed of the limiting lantern ring, the fixing cylinder, the spring and the ejector block, accurate installation is facilitated through auxiliary positioning, the installation precision is improved, and the installation efficiency is improved. By means of the self-adaptive closed ventilation mechanism composed of the closed assembly, the filtering assembly, the drying assembly and the air inducing assembly, the manual installation strength is reduced, and the situation that follow-up work is poor due to installation deviation is reduced; the self-adaptive closed ventilation mechanism is composed of the closed assembly, the filtering assembly, the drying assembly and the air inducing assembly; and the ventilation box is in a closed state through the closing assembly, so that the situation that external substances enter the protection box through the ventilation box when the ventilation box does not work is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a dry-type transformer. Background Art

[0002] Dry-type transformer is a kind of equipment with high electrical strength, mechanical strength and heat resistance. It is mainly used for power transformation. Its working principle is to use the principle of electromagnetic induction to realize the conversion of electrical energy.

[0003] When a dry-type transformer is used, if it involves outdoor use scenarios, it is usually equipped with an external protection box to protect the internal transformer body, prevent the external environment from affecting the transformer body, reduce its working efficiency or reduce its service life. When the transformer is used outdoors, the transformer body and the external protection box need to be assembled. However, since the weight of the transformer body is usually heavy, it is difficult to assemble it by a single person during assembly, and the installation position deviation is prone to occur after installation, which causes the overall structure of the installed transformer body and the external protection box to shake easily. At the same time, when the transformer body is working, heat will be generated due to work. Therefore, in order to maintain its stable operation, it is necessary to perform heat dissipation treatment on it. However, the vents of some existing dry-type transformers connected to the outside world are still in an open state when the transformer is not working, and the vents cannot be closed when heat dissipation is not required. Therefore, it is inevitable that outside air will infiltrate into the device, causing damage to the inside of the device. This situation will especially occur in some humid or south-facing areas.

[0004] Therefore, we propose a dry-type transformer to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of this, the present invention aims to provide a dry-type transformer to solve the above problems.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it includes a protection box and two groups of ventilation boxes arranged in a mirror image on both sides of the protection box, a plurality of fixed blocks are fixed in the protection box, a plurality of groups of pulleys are equidistantly distributed on the fixed blocks, the plurality of groups of pulleys are slidingly abutted and connected with arched brackets, a mounting frame is fixedly installed on the arched bracket, a plurality of groups of transformer bodies are distributed on the mounting frame, a plurality of groups of transformer bodies are provided with heat sinks, an auxiliary installation positioning mechanism is provided between the protection box and the mounting frame, and an adaptive closed ventilation mechanism is provided in the ventilation box.

[0007] As a preferred solution, the positioning mechanism includes a limiting ring, a fixed cylinder, a spring and a top block. The limiting ring is provided with a plurality of fixings on the mounting frame, the fixed cylinder is provided with a plurality of fixings arranged in a protective box relative to the limiting ring, the top block is slidably arranged in the fixed cylinder, and the spring is connected between the top block and the fixed cylinder.

[0008] As a preferred solution, one end of the top block close to the limiting collar has an arc, and the spring provides elastic force for the top block to return to its original position after sliding against the limiting collar.

[0009] As a preferred solution, the adaptive closed ventilation mechanism includes a closing component, a filtering component, a drying component and an induced draft component. The closing component is arranged at one end of the ventilation box away from the protection box, the filtering component is arranged on one side of the closing component, the drying component is arranged on the side of the filtering component away from the closing component, and the induced draft component is arranged on one side of one group of the ventilation boxes close to the transformer body.

[0010] As a preferred embodiment, the closing component includes fan blades and torsion springs. The fan blades are provided in plurality and overlapped on the ventilation box, and the two ends of the fan blades are rotatably connected to the inner wall of the ventilation box respectively. The torsion springs are provided in plurality and are sleeved on the two ends of the fan blades.

[0011] As a preferred solution, the torsion spring has a tendency to rotate the fan blade toward the inside of the protection box.

[0012] As a preferred solution, the filter assembly includes a filter plate, which is slidably inserted in the ventilation box and fixed to the outer wall of the ventilation box by bolts.

[0013] As a preferred solution, the drying component includes a drying layer, which is slidably inserted in the ventilation box and fixed to the outer wall of the ventilation box by bolts.

[0014] As a preferred solution, the air induction assembly includes a heat dissipation fan, and a plurality of the heat dissipation fans are arranged in a rectangular shape and installed on one group of the ventilation boxes.

[0015] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it mainly has the following advantages:

[0016] When assembling the device, the arch bracket slides on the pulley arranged on the fixing block, and then the arch bracket is fixed to the inner wall of the protection box through the reserved bolt holes, thereby completing the installation. During the installation, the auxiliary positioning mechanism composed of the limit collar, the fixing cylinder, the spring and the top block is used to limit the mounting frame, and the auxiliary positioning facilitates accurate installation, thereby improving the installation accuracy, reducing the manual installation intensity, and reducing the situation where errors in subsequent work due to installation deviations occur;

[0017] In addition, the adaptive closed ventilation mechanism composed of a closing component, a filtering component, a drying component and an induced draft component can reduce the entry of impurities and moisture into the protection box while completing normal ventilation and heat dissipation of the transformer main body. At the same time, when the transformer main body is not working, the ventilation box can be kept in a closed state through the closing component, reducing the entry of foreign matter into the protection box through the ventilation box when not working, thereby increasing the service life of the device.

[0018] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0020] Figure 2 It is a bottom view structural schematic diagram of an embodiment of the utility model;

[0021] Figure 3 The side view of the embodiment of the utility model is a schematic diagram of the cross-sectional structure Figure 1 ;

[0022] Figure 4 The side view of the embodiment of the utility model is a schematic diagram of the cross-sectional structure Figure 2 ;

[0023] Figure 5 This is a schematic diagram of the structure of the embodiment of the utility model Figure 1 ;

[0024] Figure 6 This is a schematic diagram of the structure of the embodiment of the utility model Figure 2 ;

[0025] Figure 7 It is an enlarged schematic diagram of the structure of part A of an embodiment of the utility model;

[0026] Figure 8 It is an enlarged schematic diagram of the torsion spring structure of an embodiment of the utility model.

[0027] Explanation of the reference numerals: 1. protection box; 2. fixing block; 3. pulley; 4. arch bracket; 5. mounting frame; 6. transformer body; 7. heat sink; 8. limiting collar; 9. fixing cylinder; 10. spring; 11. top block; 12. ventilation box; 13. drying layer; 14. filter plate; 15. fan blade; 16. torsion spring; 17. cooling fan. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0030] See also Figures 1 to 8The utility model embodiment provides a dry-type transformer, including a protection box 1 and two groups of ventilation boxes 12 arranged in a mirror image on both sides of the protection box 1. The protection box 1 includes a protection box body, a protection box door and a protection box foot for increasing the height. A plurality of fixed blocks 2 are fixed in the protection box 1. Specifically, two fixed blocks 2 are arranged and fixedly connected to the inner wall of the lower end of the protection box 1 by welding. A plurality of groups of pulleys 3 are evenly distributed on the fixed block 2. The pulley 3 is fixed to the upper end of the fixed block 2. When the arch bracket 4 and the device arranged on the arch bracket 4 are installed, they play a sliding guide movement, thereby reducing the difficulty of manual placement. The plurality of pulleys 3 are connected to the arch bracket 4 in a sliding manner. The inner wall of the arch bracket 4 is consistent with the size of the outer wall of the fixed block 2. The arch bracket 4 It can slide and fit on the side wall of the fixed block 2. A mounting frame 5 is fixedly installed on the arch bracket 4. Multiple groups of transformer bodies 6 are distributed on the mounting frame 5. Heat sinks 7 are arranged on the multiple groups of transformer bodies 6. The heat sinks 7 are installed on the transformer bodies 6. The mounting frame 5 is composed of four scattered support frames. The four scattered support frames are respectively distributed in a rectangular shape and are located at the four corners of the multiple groups of transformer bodies 6. Through such a design, the heat sink 7 arranged on the transformer body 6 can have sufficient heat dissipation space, and the transformer body 6 can be protected to a certain extent. The mounting frame 5 is fixedly connected to the arch bracket 4 by bolts. When the transformer body 6 generates heat during operation, the heat can be exported through the heat sink 7. An auxiliary installation is arranged between the protection box 1 and the mounting frame 5. The positioning mechanism includes a limiting collar 8, a fixing tube 9, a spring 10 and a top block 11. The limiting collar 8 is provided with a plurality of fixings on the mounting frame 5. The fixing tube 9 is provided with a plurality of fixings in the protective box 1 relative to the limiting collar 8. The fixing tube 9 is welded and fixed to the inner wall of the protective box 1. The top block 11 is slidably arranged in the fixing tube 9. The spring 10 is connected between the top block 11 and the fixing tube 9. The end of the top block 11 close to the limiting collar 8 has an arc, and the limiting collar 8 has an opening for accommodating the top block 11. The spring 10 provides elastic force for the top block 11 to reset after the sliding contact with the limiting collar 8. When the device is assembled, the arch bracket 4 slides on the pulley 3 arranged on the fixing block 2, and then the arch bracket 4 is connected to the protective box 1 through the reserved bolt hole. The inner wall is fixed, thereby completing the installation. During installation, the device uses an auxiliary positioning mechanism composed of a limiting collar 8, a fixing tube 9, a spring 10 and a top block 11. When the arch bracket 4 slides on the pulley 3, as the arch bracket 4 continues to move, the limiting collar 8 fixed on the mounting frame 5 will touch the top block 11. Since the top block 11 has an arc and the spring 10 can provide a range of motion for the top block 11 to move downward, when the top block 11 moves downward, the spring 10 will store elastic force. When the top block 11 is no longer blocked by the limiting collar 8, the top block 11 can be sleeved inside the limiting collar 8 to complete a certain restriction on the mounting frame 5. If multiple sets of limiting collars 8 and multiple sets of top blocks 11 are correspondingly sleeved, the positioning process is completed at this time.That is the correct installation position, so that the installer can know the standard correct installation position in time, reducing the situation where errors in subsequent work processes occur due to inaccurate installation positions.

[0031] See also Figures 3 to 8 An adaptive closed ventilation mechanism is arranged in the ventilation box 12, and the adaptive closed ventilation mechanism includes a closing component, a filtering component, a drying component and an induced draft component. The closing component is arranged at one end of the ventilation box 12 away from the protection box 1, the filtering component is arranged on one side of the closing component, the drying component is arranged on the side of the filtering component away from the closing component, and the induced draft component is arranged on one side of one group of ventilation boxes 12 close to the transformer body 6.

[0032] See also Figures 3 to 7 The closing component includes a fan blade 15 and a torsion spring 16. A plurality of fan blades 15 are arranged on the ventilation box 12 in an overlapping manner, and both ends of the plurality of fan blades 15 are rotatably connected to the inner wall of the ventilation box 12 respectively. The fan blade 15 is made of a lightweight material, such as polystyrene. A plurality of torsion springs 16 are arranged on both ends of the fan blade 15. The torsion spring 16 has a tendency to rotate the fan blade 15 toward the inside of the protective box 1. When the device is used, the torsion spring 16 exerts a torsional tendency on the fan blade 15, so that when the external driving force on the rotation of the fan blade 15 is less than the elastic force of the torsion spring 16, the plurality of fan blades 15 can be in an overlapping state, thereby closing one end of the ventilation box 12.

[0033] See also Figures 3 to 7 The filter assembly includes a filter plate 14, which is slidably inserted in the ventilation box 12 and fixed to the outer wall of the ventilation box 12 by bolts. Through the filter assembly composed of the filter plate 14, impurities in the air can be filtered by the filter plate 14 when the air passes through, thereby reducing the impurities entering the protection box 1. At the same time, the device can clean or replace the filter plate 14 by removing the bolts fixing the filter plate 14 to the ventilation box 12, and then sliding out the filter plate 14, thereby maintaining the normal use of the filter assembly.

[0034] See also Figures 3 to 7 The drying component includes a drying layer 13, which is slidably inserted into the ventilation box 12 and fixed to the outer wall of the ventilation box 12 by bolts. The drying layer 13 is a sliding slot plate filled with desiccant. The drying component composed of the drying layer 13 can dry the moisture in the air through the drying layer 13 when the air passes through, thereby reducing the moisture entering the protection box 1. At the same time, the device can replace the drying layer 13 by removing the bolts fixing the drying layer 13 and the ventilation box 12, and then sliding out the drying layer 13, thereby maintaining the normal use of the drying component.

[0035] See also Figures 3 to 7 The air induction component includes a heat dissipation fan 17, and the heat dissipation fan 17 is provided with a plurality of rectangularly distributed ones installed on one of the ventilation boxes 12. The device can guide the airflow by starting the heat dissipation fan 17 through the air induction component composed of the heat dissipation fan 17. The airflow generated when the heat dissipation fan 17 is started can drive the fan blades 15 rotatingly arranged on the ventilation box 12 to rotate, so that the ventilation box 12 is in an open state, thereby circulating the airflow, so that the airflow can circulate through the inner side of the protection box 1, that is, flow through one of the ventilation boxes 12 and enter the protection box 1 The heat dissipation process of the heat sink 7 is completed. After the fan blades 15 rotate, the elastic force stored in the torsion spring 16 will no longer drive the fan blades 15 after the heat dissipation fan 17 finishes working. The elastic force stored in the torsion spring 16 makes multiple groups of fan blades 15 overlap, so that the port part of the ventilation box 12 can be in a closed state when not working, thereby reducing the situation where foreign matter enters the protection box 1 through the port part of the ventilation box 12 when the device is not working and affects the internal parts of the protection box 1.

[0036] In summary, when the device is assembled, the arch bracket 4 slides on the pulley 3 arranged on the fixing block 2, and then the arch bracket 4 is fixed to the inner wall of the protection box 1 through the reserved bolt holes, thereby completing the installation, and during installation, through the auxiliary positioning mechanism composed of the limiting collar 8, the fixing tube 9, the spring 10 and the top block 11, when the arch bracket 4 slides on the pulley 3, as the arch bracket 4 continues to move, the limiting collar 8 fixed on the mounting frame 5 will touch the top block 11, because the top block 11 has an arc, and the spring 10 can provide a range of movement for the top block 11 to move downward, and at the same time, when the top block 11 moves downward, the spring 10 will store elastic force, and when there is no longer any obstruction of the limiting collar 8 on the top block 11, the top block 11 is sleeved inside the limiting collar 8, so that a certain restriction on the mounting frame 5 can be completed, if multiple groups of limiting collars 8 and multiple groups of top blocks 11 are correspondingly sleeved;

[0037] In addition, the device uses an air induction component composed of a heat dissipation fan 17, and the airflow can be guided by starting the heat dissipation fan 17. The airflow generated when the heat dissipation fan 17 is started can drive the fan blades 15 rotatably arranged on the ventilation box 12 to rotate, so that the ventilation box 12 is in an open state, thereby allowing the airflow to circulate, so that the airflow can flow through the inner side of the protection box 1, that is, flow through one group of ventilation boxes 12 into the interior of the protection box 1, and then pass through another group of ventilation boxes 12 to pass through, thereby completing the heat dissipation process of the heat sink 7. After the fan blades 15 rotate, through The elastic force stored in the torsion spring 16 no longer generates driving force on the fan blades 15 after the heat dissipation fan 17 stops working. The elastic force stored in the torsion spring 16 allows multiple groups of fan blades 15 to overlap, so that the port portion of the ventilation box 12 can be in a closed state when not working, thereby reducing the situation where foreign matter enters the protection box 1 through the port portion of the ventilation box 12 when the device is not working and affects the internal parts of the protection box 1. When the airflow passes through, the device filters or reduces impurities and moisture in the air through the drying component composed of the drying layer 13 and the filtering component composed of the filter plate 14.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dry-type transformer, characterized in that: The invention comprises a protection box (1) and two groups of ventilation boxes (12) arranged in a mirror image on both sides of the protection box (1); a plurality of fixed blocks (2) are fixed in the protection box (1); a plurality of pulleys (3) are arranged on the fixed blocks (2) at equal intervals; an arch bracket (4) is slidably connected to the plurality of pulleys (3); a mounting frame (5) is fixedly mounted on the arch bracket (4); a plurality of transformer bodies (6) are distributed on the mounting frame (5); a plurality of transformer bodies (6) are provided with heat sinks (7); a positioning mechanism for auxiliary installation is arranged between the protection box (1) and the mounting frame (5); and an adaptive closed ventilation mechanism is arranged in the ventilation box (12).

2. A dry-type transformer according to claim 1, characterized in that: The positioning mechanism comprises a limiting collar (8), a fixing cylinder (9), a spring (10) and a top block (11); the limiting collar (8) is provided with a plurality of fixings on a mounting frame (5); the fixing cylinder (9) is provided with a plurality of fixings arranged in a protective box (1) relative to the limiting collar (8); the top block (11) is slidably arranged in the fixing cylinder (9); and the spring (10) is connected between the top block (11) and the fixing cylinder (9).

3. A dry-type transformer according to claim 2, characterized in that: One end of the top block (11) close to the limiting collar (8) has an arc, and the spring (10) provides elastic force for the top block (11) to return to its original position after sliding against the limiting collar (8).

4. A dry-type transformer according to claim 1, characterized in that: The adaptive closed ventilation mechanism comprises a closing component, a filtering component, a drying component and an air induction component, wherein the closing component is arranged at one end of the ventilation box (12) away from the protection box (1), the filtering component is arranged at one side of the closing component, the drying component is arranged at a side of the filtering component away from the closing component, and the air induction component is arranged at one side of one group of the ventilation boxes (12) close to the transformer body (6).

5. A dry-type transformer according to claim 4, characterized in that: The closing component comprises a fan blade (15) and a torsion spring (16); the fan blade (15) is provided with a plurality of blades (15) which are distributed on the ventilation box (12) in an overlapping manner, and the two ends of the plurality of fan blades (15) are respectively rotatably connected to the inner wall of the ventilation box (12); the torsion spring (16) is provided with a plurality of blades (15) which are sleeved on the two ends of the fan blade (15).

6. A dry-type transformer according to claim 5, characterized in that: The torsion spring (16) has a tendency to cause the fan blade (15) to rotate toward the inside of the protection box (1).

7. A dry-type transformer according to claim 4, characterized in that: The filter assembly comprises a filter plate (14), the filter plate (14) is slidably inserted in the ventilation box (12), and the filter plate (14) is fixed to the outer wall of the ventilation box (12) by bolts.

8. A dry-type transformer according to claim 4, characterized in that: The drying component comprises a drying layer (13), the drying layer (13) is slidably inserted in the ventilation box (12), and the drying layer (13) is fixed to the outer wall of the ventilation box (12) by bolts.

9. A dry-type transformer according to claim 4, characterized in that: The air induction assembly comprises a heat dissipation fan (17), and a plurality of the heat dissipation fans (17) are arranged in a rectangular distribution and installed on one group of the ventilation boxes (12).

Images