Anti-condensation epoxy resin pouring dry-type transformer

Abstract

The utility model relates to the technical field of dry-type transformers, in particular to an anti-condensation epoxy resin pouring dry-type transformer which comprises a cushion block, a high-voltage coil and a low-voltage coil, the high-voltage coil is arranged at the upper end of the cushion block, the low-voltage coil is arranged on the inner side of the high-voltage coil, a copper bar is fixedly connected to the inner side of the low-voltage coil, and a clamping piece is arranged at the upper end of the low-voltage coil. The outer side of the cushion block is fixedly connected with a fixing rod, the outer side of the fixing rod is fixedly connected with a fan, the outer side of the fan is fixedly connected with a fixing plate, the inner side of the outer side of the fixing plate is slidably connected with a sliding rod, the tail end of one side of the sliding rod is fixedly connected with a magnetic block, the other end of the sliding rod is fixedly connected with a weight, the outer side of the fixing rod is fixedly connected with a support, and the inner side of the support is fixedly connected with a bearing. According to the dry-type transformer, through the arrangement of the fixing plate, the sliding rods, the magnetic blocks, the cloth pieces and the magnetic rings, much dust is prevented from being accumulated at an air blowing opening of the draught fan, the cooling efficiency of the draught fan is guaranteed, and the prevention effect of the draught fan on condensation generated by the dry-type transformer is indirectly maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of dry-type transformers, in particular to an anti-condensation epoxy resin cast dry-type transformer. Background Art

[0002] The anti-condensation epoxy resin cast dry-type transformer is a specially designed transformer that uses epoxy resin as the insulating material and uses specific technology to prevent condensation from forming inside the transformer.

[0003] Condensation refers to the condensation of water vapor into water droplets due to temperature difference inside the transformer, which may cause problems such as reduced insulation performance of the transformer or even short circuit. During the use of the dry-type transformer, the temperature inside the dry-type transformer is easily affected by the use environment and a large temperature difference occurs. In order to prevent condensation from occurring inside the dry-type transformer, the fan inside the dry-type transformer is started to cool down the heated dry-type transformer. However, the cooling fan of the dry-type transformer cools down the dry-type transformer by blowing air upwards. The air outlet of the fan is set toward the upper end, so that when the fan is not working for a long time, a lot of dust is easily accumulated at the air outlet. When the fan is working subsequently, the dust blown away by the fan is likely to cause certain interference to the operation of the dry-type transformer, reduce the cooling efficiency of the fan, and indirectly affect the condensation prevention effect of the fan on the dry-type transformer. Therefore, an anti-condensation epoxy resin cast dry-type transformer is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to provide an anti-condensation epoxy resin cast dry-type transformer to solve the problem that when the fan is not working for a long time, a lot of dust is easily accumulated at the air outlet, and when the fan is working subsequently, the dust blown away by the fan is easy to cause certain interference to the operation of the dry-type transformer, reduce the cooling efficiency of the fan, and indirectly affect the condensation prevention effect of the fan on the dry-type transformer.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A condensation-proof epoxy resin cast dry-type transformer comprises a pad, a high-voltage coil and a low-voltage coil, wherein the high-voltage coil is arranged on the upper end of the pad, the low-voltage coil is arranged on the inner side of the high-voltage coil, the inner side of the low-voltage coil is fixedly connected to a copper bar, a clamp is arranged on the upper end of the low-voltage coil, a fixing rod is fixedly connected to the outer side of the pad, a fan is fixedly connected to the outer side of the fixing rod, a fixing plate is fixedly connected to the outer side of the fan, a sliding rod is slidably connected to the inner side of the outer side of the fixing plate, a magnetic block is fixedly connected to one end of the sliding rod, a weight is fixedly connected to the other end of the sliding rod, a bracket is fixedly connected to the outer side of the fixing rod, a bearing is fixedly connected to the inner side of the bearing, a rotating shaft is fixedly connected to the inner side of the bearing, a cloth piece is fixedly connected to the outer side of the rotating shaft, a gravity frame is fixedly connected to the outer side of the rotating shaft, and a magnetic ring is fixedly connected to the outer side of the gravity frame.

[0007] As a further optimization of the present invention, the number of the cloth pieces and the number of the gravity frames are the same, namely four; the cloth pieces are evenly distributed outside the rotating shaft; and the cloth pieces are fixedly connected to the gravity frames.

[0008] As a further optimization of the present invention, the width of the gravity frame is greater than or equal to the width of the fan, and the gravity frame is arranged at the upper end of the fan outlet.

[0009] As a further optimized content of the present invention, wherein: the magnetic ring is arranged at the center position of the gravity frame, and the diameter of the magnetic ring is much larger than the diameter of the round rod in the middle section of the gravity frame.

[0010] As a further optimization of the present invention, there are two fans in total, and the fans are symmetrically arranged on both sides of the high-voltage coil.

[0011] As a further optimization of the present invention, the magnetic ring is magnetically attracted to the magnetic block, the magnetic block is arranged directly above the fixed plate, and the magnetic block and the weight block are parallel to each other.

[0012] As a further optimization of the present invention, there are two slide bars, which are symmetrically arranged on the inner side of the fixed plate, and the length of the slide bars is sufficient to support the magnetic block and the magnetic ring to be in close contact.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, by setting the fixed plate, sliding rod, magnetic block, cloth piece and magnetic ring, when the epoxy resin cast dry-type transformer generates a large amount of heat, the started fan outputs cold air upward, so that the flowing cold air can act as a thrust on the cloth piece, and the magnetic ring on the gravity frame can overcome the attraction of the magnetic block, and then the cloth piece and the gravity frame drive the rotating shaft to rotate the rod in the bracket, so that the cloth piece rotating under the action of the fan and the gravity frame combination can accelerate the air cooling efficiency of the dry-type transformer, and after the fan stops working, the gravity frame is under the action of the gravity of its magnetic ring, and one of the magnetic rings can be adsorbed with the magnetic block again, so that another gravity frame adjacent to the gravity frame and the cloth piece fixedly connected thereto can be horizontally arranged on the upper side of the fan, thereby shielding the fan outlet, avoiding the accumulation of a lot of dust at the fan outlet, ensuring the cooling efficiency of the fan, and indirectly maintaining the condensation prevention effect of the fan on the dry-type transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0017] Figure 3 For this utility model Figure 1 Schematic diagram of the structure at B in the middle;

[0018] Figure 4 This is a schematic diagram of the gravity frame structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the slide bar structure of the utility model.

[0020] In the figure: 1. pad; 2. high-voltage coil; 3. low-voltage coil; 4. clamp; 5. copper busbar; 6. fan; 61. fixing plate; 62. sliding rod; 63. magnetic block; 64. weight block; 7. fixing rod; 71. bracket; 72. bearing; 73. rotating shaft; 731. cloth piece; 732. gravity frame; 733. magnetic ring. DETAILED DESCRIPTION

[0021] 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.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] A condensation-proof epoxy resin cast dry-type transformer comprises a cushion block 1, a high-voltage coil 2 and a low-voltage coil 3. The high-voltage coil 2 is arranged on the upper end of the cushion block 1, the low-voltage coil 3 is arranged inside the high-voltage coil 2, the copper bar 5 is fixedly connected to the inside of the low-voltage coil 3, the clamp 4 is arranged on the upper end of the low-voltage coil 3, the outer side of the cushion block 1 is fixedly connected to a fixing rod 7, the outer side of the fixing rod 7 is fixedly connected to a fan 6, the outer side of the fan 6 is fixedly connected to a fixing plate 61, the outer side of the fixing plate 61 is slidably connected to a sliding rod 62, one end of the sliding rod 62 is fixedly connected to a magnetic block 63, the other end of the sliding rod 62 is fixedly connected to a weight block 64, the outer side of the fixing rod 7 is fixedly connected to a bracket 71, the inner side of the bracket 71 is fixedly connected to a bearing 72, the inner side of the bearing 72 is fixedly connected to a rotating shaft 73, the outer side of the rotating shaft 73 is fixedly connected to a cloth piece 731, the outer side of the rotating shaft 73 is fixedly connected to a gravity frame 732, and the outer side of the gravity frame 732 is fixedly connected to a magnetic ring 733.

[0025] As a further implementation of this solution, the number of cloth pieces 731 and the number of gravity frames 732 are the same as four, and the cloth pieces 731 are evenly distributed outside the rotating shaft 73. The cloth pieces 731 are fixedly connected to the gravity frames 732, so that the cloth pieces 731 can shield the upper end of the air outlet of the fan 6;

[0026] As a further implementation of this solution, the width of the gravity frame 732 is greater than or equal to the width of the fan 6. The gravity frame 732 is arranged at the upper end of the air outlet of the fan 6, so that the cloth sheet 731 can completely cover the upper part of the fan 6.

[0027] As a further implementation of this solution, the magnetic ring 733 is arranged at the center of the gravity frame 732, and the diameter of the magnetic ring 733 is much larger than the diameter of the round rod in the middle section of the gravity frame 732, so that the magnetic ring 733 and the magnetic block 63 are magnetically attracted to each other;

[0028] As a further implementation of this solution, there are two fans 6, which are symmetrically arranged on both sides of the high-voltage coil 2, which can improve the air cooling rate of the dry transformer;

[0029] As a further implementation of this solution, the magnetic ring 733 is magnetically attracted to the magnetic block 63, the magnetic block 63 is arranged directly above the fixed plate 61, and the magnetic block 63 and the weight block 64 are parallel to each other, so that the magnetic block 63 can be adsorbed or separated from the magnetic ring 733 when the fan 6 is started or stopped;

[0030] As a further implementation of the present invention, there are two slide bars 62, which are symmetrically arranged on the inner side of the fixed plate 61. The length of the slide bars 62 is sufficient to support the magnetic block 63 and the magnetic ring 733 to be in close contact, thereby ensuring that the magnetic block 63 always keeps vertical movement.

[0031] Working process: During use, the equipment is powered by an external power supply. When the epoxy resin cast dry-type transformer is used, if more heat is generated inside the dry-type transformer, the fan 6 on the dry-type transformer can start automatically and output cold air in the direction of the high-voltage coil 2. In the process of the fan 6 outputting cold air, the cold air of the fan 6 can exert a thrust on the cloth piece 731 directly above it, so that the cloth piece 731 transmits a thrust to the gravity frame 732 and the rotating shaft 73 to which it is fixedly connected. Because the wind force generated by the fan 6 is greater than the suction force of the magnetic block 63 and the magnetic ring 733, the rotating shaft 73 can be stably rotated in the bracket 71 in the direction away from the high-voltage coil 2 through the bearing 72 fixedly connected to the bracket 71. After the magnetic ring 733 magnetically attracted to the magnetic block 63 moves away from the magnetic block 63, the magnetic block 63 moves vertically to a position close to the fixed plate 61 under the action of the gravity of the weight block 64 fixedly connected to it through the slide rod 62. At this time, the cloth pieces 731 in four different directions rotate cyclically under the action of the fan 6. During the rotation of 731, the wind generated by the cloth piece 731 will directly act on the dry-type transformer, effectively accelerating the wind cooling efficiency of the dry-type transformer, and when the cloth piece 731 is moved by the fan 6, the gravity frame 732 fixedly connected to the cloth piece 731 rotates with the cloth piece 731, and provides gravity inertia force for the rotation of the rotating shaft 73, thereby accelerating the rotation efficiency of the rotating shaft 73, avoiding the magnetic ring 733 from being attracted by the magnetic block 63 due to the slow rotation speed of the gravity frame 732, and stopping the fan 6. After operation, the rotating shaft 73 loses its rotational force and gradually stops rotating under the action of the gravity frame 732, and then when the magnetic ring 733 on one of the gravity frames 732 moves to the magnetic block 63, they can be adsorbed together. At this time, the position of the rotating shaft 73 can be fixed and restricted, and the other cloth piece 731 adjacent to the cloth piece 731 where the magnetic ring 733 is located is arranged in parallel at the upper end of the air outlet of the fan 6, so as to prevent the air outlet of the fan 6 from being blocked and avoid the accumulation of dust at the air outlet of the fan 6.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-condensation epoxy resin cast dry-type transformer, characterized in that: The invention comprises a cushion block (1), a high-voltage coil (2) and a low-voltage coil (3), characterized in that: a high-voltage coil (2) is arranged on the upper end of the cushion block (1), a low-voltage coil (3) is arranged on the inner side of the high-voltage coil (2), a copper bar (5) is fixedly connected to the inner side of the low-voltage coil (3), a clamp (4) is arranged on the upper end of the low-voltage coil (3), a fixing rod (7) is fixedly connected to the outer side of the cushion block (1), a fan (6) is fixedly connected to the outer side of the fixing rod (7), a fixing plate (61) is fixedly connected to the outer side of the fan (6), and a fixing plate (61) is slidably connected to the inner side of the outer side of the fixing plate (61). A slide bar (62), one end of which is fixedly connected to a magnetic block (63), the other end of which is fixedly connected to a weight block (64), the outer side of the fixed bar (7) is fixedly connected to a bracket (71), the inner side of the bracket (71) is fixedly connected to a bearing (72), the inner side of the bearing (72) is fixedly connected to a rotating shaft (73), the outer side of the rotating shaft (73) is fixedly connected to a cloth piece (731), the outer side of the rotating shaft (73) is fixedly connected to a gravity frame (732), and the outer side of the gravity frame (732) is fixedly connected to a magnetic ring (733).

2. The anti-condensation epoxy resin cast dry-type transformer according to claim 1, characterized in that: The number of the cloth pieces (731) and the number of the gravity frames (732) are the same, namely four; the cloth pieces (731) are evenly distributed outside the rotating shaft (73); and the cloth pieces (731) are fixedly connected to the gravity frames (732).

3. The anti-condensation epoxy resin cast dry-type transformer according to claim 1, characterized in that: The width of the gravity frame (732) is greater than or equal to the width of the fan (6), and the gravity frame (732) is arranged at the upper end of the air outlet of the fan (6).

4. The anti-condensation epoxy resin cast dry-type transformer according to claim 1, characterized in that: The magnetic ring (733) is arranged at the center of the gravity frame (732), and the diameter of the magnetic ring (733) is much larger than the diameter of the round rod in the middle section of the gravity frame (732).

5. The anti-condensation epoxy resin cast dry-type transformer according to claim 1, characterized in that: There are two fans (6) in total, and the fans (6) are symmetrically arranged on both sides of the high-voltage coil (2).

6. The anti-condensation epoxy resin cast dry-type transformer according to claim 1, characterized in that: The magnetic ring (733) is magnetically attracted to the magnetic block (63); the magnetic block (63) is arranged directly above the fixing plate (61); and the magnetic block (63) and the weight block (64) are parallel to each other.

7. The anti-condensation epoxy resin cast dry-type transformer according to claim 1, characterized in that: There are two slide bars (62) in total. The slide bars (62) are symmetrically arranged on the inner side of the fixed plate (61). The length of the slide bars (62) is sufficient to support the magnetic block (63) and the magnetic ring (733) to be in close contact with each other.

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