Dry-type transformer

Abstract

The utility model discloses a dry-type transformer relates to dry-type transformer technical field, including protection box and install transformer body in the protection box, the front and back side wall of protection box is symmetrically provided with two opening, and the left and right inner side wall of protection box is symmetrically rotatingly connected with two first damping rotating shaft, the peripheral face of the first damping rotating shaft is fixedly sleeved with a winding roller, the left end of the first damping rotating shaft penetrates through the left side wall of the protection box and is fixedly connected with a rotating handle, and two guide rollers are symmetrically and rotationally connected between the left inner side wall and the right inner side wall of the protection box. When the transformer protection box is used, the ventilating curtain is tightly jacked through the jacking unit, so that a gap can be effectively prevented from being formed between the ventilating curtain and the opening, external impurities or small animals are prevented from entering the protection box through the gap, and the protection effect on the transformer body is effectively enhanced.

Description

Technical Field

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

[0002] Dry-type transformer refers to a type of transformer whose windings and cores are not immersed in insulating oil. It has the advantages of strong short-circuit resistance, low maintenance workload, high operating efficiency, small size, and low noise. Therefore, it is widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and equipment and other places.

[0003] When the dry-type transformer is working in the wild or outdoors, in order to better protect the dry-type transformer, the dry-type transformer is generally installed inside a protection box to isolate external adverse factors. The dry-type transformer generally adopts natural air cooling and forced air cooling for heat dissipation, so the installation of a protection box will affect its heat dissipation performance. In order to enhance the heat dissipation performance, a certain amount of air inlet holes or air inlet cavities will be opened on the side wall of the protection box to enhance the air flow. However, in order to prevent the protection performance from being seriously reduced, the area of ​​the air inlet holes and the air inlet cavities is severely limited. Therefore, it is necessary to increase the ventilation fan, and then normally turn on the ventilation fan to improve the heat dissipation effect, resulting in higher energy consumption.

[0004] The Chinese invention patent with patent application number 202311174772.2 records a dry-type transformer, which increases the air intake by setting two openings and cooperating with two baffles, while ensuring good isolation protection. In this way, the natural circulation of air in the protection box can be enhanced, and a good heat dissipation effect can be achieved without the need to normally turn on the ventilation fan, and energy consumption is reduced. However, in the above-mentioned dry-type transformer, when the baffle is lowered, the baffle is only tightened by sliding the limit rod connected to the first limit groove, and the limiting effect of the baffle is poor. When the wind is strong or some small animals are scratching, the baffle will bend and form a large gap between the opening, causing some impurities or small animals to enter the protection box through the gap, causing damage to the transformer body inside the protection box. Utility Model Content

[0005] The purpose of the present application is to provide a dry-type transformer to solve the problem in the above-mentioned background technology that the limiting effect of the retaining net is poor, a large gap is easily formed between the retaining net and the opening, and foreign impurities or small animals enter the protective box through the gap and threaten the safety of the transformer body.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A dry-type transformer, comprising a protective box and a transformer body installed in the protective box, wherein the front and rear side walls of the protective box are symmetrically provided with two openings, two first damping shafts are symmetrically rotatably connected between the left and right inner side walls of the protective box, a winding roller is fixedly sleeved on the outer circumferential surface of the first damping shaft, the left end of the first damping shaft passes through the left side wall of the protective box and is fixedly connected with a handle, two guide rollers are symmetrically rotatably connected between the left and right inner side walls of the protective box, two breathable curtains are symmetrically wound on the two winding rollers, two groups of limiting grooves are symmetrically provided between the left and right inner side walls of the protective box, two counterweight plates are symmetrically slidably connected between the two groups of limiting grooves, the counterweight plates are slidably connected in the limiting grooves through sliders and slide grooves, the two breathable curtains respectively bypass the two guide rollers and are respectively fixedly connected to the tops of the two counterweight plates, and also comprises two clamping assemblies symmetrically arranged in the protective box, the clamping assembly comprises two clamping plates symmetrically and resiliently plugged on the inner side walls of the protective box and a tightening unit for tightening the clamping plates.

[0007] Preferably, the clamping assembly also includes two groups of sockets symmetrically opened on the inner wall of the protective box, an elastic member is fixedly connected to the inner wall of the socket, the other end of the elastic member is fixedly connected to an insertion rod, the end of the insertion rod away from the elastic member extends to the outside of the socket and is fixedly connected to the side of the clamping plate. The advantage of such a setting is that when the clamping unit releases the clamping plate, the clamping plate can be reset under the elastic force of the elastic member, so as not to hinder the winding roller from lowering or retracting the air curtain, thereby facilitating the staff to inspect the transformer body inside the protective box.

[0008] Preferably, the clamping assembly also includes two horizontal plates symmetrically fixedly connected between the side surfaces of the two clamping plates. The advantage of such an arrangement is that the two horizontal plates cooperate with the two clamping plates to form a square frame, thereby enhancing the clamping effect of the breathable curtain, thereby effectively preventing a large gap from being formed between the breathable curtain and the opening, which would cause external impurities or small animals to enter the protective box, thereby protecting the safety of the transformer body inside the protective box.

[0009] Preferably, the tightening unit includes two groups of cavities symmetrically opened on the left and right inner walls of the protective box, the number of cavities in each group is two, and two second damping shafts are rotatably connected to the inner walls of the two cavities in each group, and two cams are symmetrically fixedly sleeved on the outer circumference of the two second damping shafts, and the two second damping shafts respectively penetrate the left and right side walls of the protective box and are symmetrically fixedly connected to the rotating rod. The advantage of such an arrangement is that the staff only needs to rotate the rotating rod to drive the cam to rotate to tighten or loosen the clamping plate. The structure is simple, the tightening operation is simplified, and the practicality of the transformer is improved.

[0010] Preferably, two groups of threaded holes are symmetrically provided on the left and right side walls of the protective box, with each group of threaded holes having two holes. A through hole is provided on the side of the rotating rod, in which a bolt is movably inserted, and the bolt is threadedly connected to the inside of the threaded hole. The advantage of such a configuration is that the rotating rod can be firmly limited by rotating the bolt into the threaded hole, thereby preventing the cam from rotating. In this way, the cam can firmly and reliably tighten the clamping plate, thereby ensuring the clamping effect of the air curtain, eliminating the formation of a gap between the air curtain and the opening, and greatly enhancing the protection effect of the transformer body.

[0011] In summary, the technical effects and advantages of the utility model are:

[0012] 1. In the utility model, the air curtain is tightened by the tightening unit, which can effectively prevent the formation of a gap between the air curtain and the opening, thereby preventing foreign matter or small animals from entering the protective box through the gap, and effectively enhancing the protection effect of the transformer body.

[0013] 2. In the utility model, two horizontal plates are arranged in cooperation with two clamping plates to form a square frame, so that the air-permeable curtain is pressed tightly in four directions of the opening, such as up, down, left, and right. In this way, a gap is prevented from being formed between the opening and the air-permeable curtain, which greatly enhances the protection effect and reliability of the transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the structure of a dry-type transformer in an embodiment of the present application;

[0016] Figure 2 This is a schematic diagram of a first partial structure of a dry-type transformer in an embodiment of the present application;

[0017] Figure 3 A schematic diagram of the second partial structure of a dry-type transformer in an embodiment of the present application

[0018] Figure 4 A third partial structural schematic diagram of a dry-type transformer in an embodiment of the present application;

[0019] Figure 5 In the embodiment of this application Figure 3 Enlarged schematic diagram of point A in the middle

[0020] Figure 6It is a first partial front cross-sectional view of the protection box in the embodiment of the present application;

[0021] Figure 7 This is a second partial front cross-sectional view of the protective box in the embodiment of the present application.

[0022] In the figure: 1. protective box; 2. opening; 3. first damping shaft; 4. winding roller; 5. rotating handle; 6. guide roller; 7. breathable curtain; 8. limiting groove; 9. counterweight plate; 91. slide groove; 10. clamping assembly; 101. clamping plate; 102. tightening unit; 1021. cavity; 1022. second damping shaft; 1023. cam; 1024. rotating rod; 1025. bolt; 106. cross plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example: Reference Figure 1-7 A dry-type transformer shown in the figure comprises a protective box 1 and a transformer body 11 installed in the protective box 1, the front and rear side walls of the protective box 1 are symmetrically provided with two openings 2, two first damping shafts 3 are symmetrically rotatably connected between the left and right inner side walls of the protective box 1, a winding roller 4 is fixedly sleeved on the outer circumference of the first damping shaft 3, the left end of the first damping shaft 3 passes through the left side wall of the protective box 1 and is fixedly connected with a handle 5, two guide rollers 6 are symmetrically rotatably connected between the left and right inner side walls of the protective box 1, and two breathable curtains 7 are symmetrically wound on the two winding rollers 4. Two groups of limit grooves 8 are symmetrically opened between the left and right inner walls of the protective box 1, and two counterweight plates 9 are symmetrically slidably connected between the two groups of limit grooves 8. The counterweight plates 9 are slidably connected in the limit grooves 8 through sliders and slide grooves 91. The two breathable curtains 7 respectively bypass the two guide rollers 6 and are fixedly connected to the tops of the two counterweight plates 9 respectively. It also includes two clamping assemblies 10 symmetrically arranged in the protective box 1. The clamping assembly 10 includes two clamping plates 101 symmetrically and resiliently inserted on the inner wall of the protective box 1 and a tightening unit 102 for tightening the clamping plates 101.

[0025] refer to Figure 6 and Figure 7The clamping assembly 10 also includes two groups of sockets 103 symmetrically opened on the inner wall of the protective box 1, and an elastic member 104 is fixedly connected to the inner wall of the socket 103. The other end of the elastic member 104 is fixedly connected to an insertion rod 105. The end of the insertion rod 105 away from the elastic member 104 extends to the outside of the socket 103 and is fixedly connected to the side of the clamping plate 101.

[0026] Specifically, when the tightening unit 102 releases the clamping plate 101, the clamping plate 101 can be reset under the elastic force of the elastic member 104, so as not to hinder the winding roller 4 from lowering or retracting the breathable curtain 7, thereby facilitating the staff to inspect the transformer body 11 inside the protective box 1.

[0027] refer to Figure 3 and 4 The clamping assembly 10 also includes two transverse plates 106 symmetrically fixedly connected between the side surfaces of the two clamping plates 101 .

[0028] Specifically, the two horizontal plates 106 cooperate with the two clamping plates 101 to form a square frame, thereby enhancing the clamping effect on the breathable curtain 7, thereby effectively preventing a large gap from being formed between the breathable curtain 7 and the opening 2 to cause foreign matter or small animals to enter the protective box 1, thereby protecting the safety of the transformer body 11 inside the protective box 1.

[0029] refer to Figure 1-5 The tightening unit 102 includes two groups of cavities 1021 symmetrically opened on the left and right inner walls of the protective box 1, and the number of cavities 1021 in each group is two. Two second damping shafts 1022 are rotatably connected to the inner walls of each group of two cavities 1021. Two cams 1023 are symmetrically fixedly sleeved on the outer circumferences of the two second damping shafts 1022. The two second damping shafts 1022 respectively penetrate the left and right side walls of the protective box 1 and are symmetrically fixedly connected to the rotating rod 1024.

[0030] Specifically, the staff only needs to rotate the rotating rod 1024 to drive the cam 1023 to rotate and tighten or loosen the clamping plate 101. The structure is simple, and the tightening operation is simplified, thereby improving the practicality of the transformer.

[0031] refer to Figure 1-4 The left and right side walls of the protective box 1 are symmetrically provided with two groups of threaded holes, each group of threaded holes has two threads, a through hole is provided on the side of the rotating rod 1024, a bolt 1025 is movably inserted in the through hole, and the bolt 1025 is threadedly connected inside the threaded hole.

[0032] Specifically, by rotating the bolt 1025 and inserting it into the threaded hole, the rotating rod 1024 can be firmly limited, thereby preventing the cam 1023 from rotating. In this way, the cam 1023 can firmly and reliably tighten the clamping plate 101, thereby ensuring the clamping effect of the air curtain 7, eliminating the formation of a gap between the air curtain 7 and the opening 2, and greatly enhancing the protection effect of the transformer body 11.

[0033] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dry-type transformer, comprising a protective box (1) and a transformer body (11) installed in the protective box (1), characterized in that: The front and rear side walls of the protection box (1) are symmetrically provided with two openings (2); the left and right inner side walls of the protection box (1) are symmetrically connected to two first damping shafts (3); a winding roller (4) is fixedly sleeved on the outer circumference of the first damping shaft (3); the left end of the first damping shaft (3) passes through the left side wall of the protection box (1) and is fixedly connected to a handle (5); the left and right inner side walls of the protection box (1) are symmetrically connected to two guide rollers (6); two breathable curtains (7) are symmetrically wound on the two winding rollers (4); the left and right inner side walls of the protection box (1) are symmetrically provided with two first damping shafts (3); a first damping shaft (4) is fixedly sleeved on the outer circumference of the first damping shaft (3); the left end of the first damping shaft (3) passes through the left side wall of the protection box (1) and is fixedly connected to a handle (5); two guide rollers (6) are symmetrically connected to the left and right inner side walls of the protection box (1); two breathable curtains (7) are symmetrically wound on the two winding rollers (4); There are two groups of limit grooves (8), and two counterweight plates (9) are symmetrically slidably connected between the two groups of limit grooves (8). The counterweight plates (9) are slidably connected in the limit grooves (8) through sliders and slide grooves (91). The two breathable curtains (7) respectively bypass the two guide rollers (6) and are respectively fixedly connected to the tops of the two counterweight plates (9). It also includes two clamping assemblies (10) symmetrically arranged in the protective box (1), and the clamping assembly (10) includes two clamping plates (101) symmetrically and resiliently plugged into the inner wall of the protective box (1) and a tightening unit (102) for tightening the clamping plates (101).

2. A dry-type transformer according to claim 1, characterized in that: The clamping assembly (10) further comprises two groups of jacks (103) symmetrically arranged on the inner wall of the protection box (1), an elastic member (104) being fixedly connected to the inner wall of the jack (103), an insertion rod (105) being fixedly connected to the other end of the elastic member (104), and an end of the insertion rod (105) away from the elastic member (104) extending to the outside of the jack (103) and fixedly connected to the side of the clamping plate (101).

3. A dry-type transformer according to claim 2, characterized in that: The clamping assembly (10) further comprises two transverse plates (106) symmetrically fixedly connected between the side surfaces of the two clamping plates (101).

4. A dry-type transformer according to claim 3, characterized in that: The tightening unit (102) comprises two groups of cavities (1021) symmetrically opened on the left and right inner walls of the protection box (1), each group of cavities (1021) has two cavities, and the inner walls of each group of two cavities (1021) are rotatably connected to two second damping shafts (1022), and two cams (1023) are symmetrically fixedly sleeved on the outer circumferences of the two second damping shafts (1022), and the two second damping shafts (1022) respectively penetrate the left and right side walls of the protection box (1) and are symmetrically fixedly connected to the rotating rod (1024).

5. A dry-type transformer according to claim 4, characterized in that: The left and right side walls of the protection box (1) are symmetrically provided with two groups of threaded holes, each group of threaded holes having two threads. A through hole is provided on the side of the rotating rod (1024), in which a bolt (1025) is movably inserted, and the bolt (1025) is threadedly connected inside the threaded hole.

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