Dry-type transformer with air deflector structure
By designing an air deflector structure in the dry-type transformer, the cooling air is guided to flow from the outside close to the coil, which solves the problem of excessive coil temperature, improves the safety and reliability of the equipment, and saves material usage. .
Patent Information
- Application Number
- CN202420721983.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-09
AI Technical Summary
When the heat dissipation conditions of existing dry transformers are poor, the coil temperature is prone to be too high, which leads to aging of the insulators, reduces the electrical safety performance of the equipment, affects service life and safe operation.
Design a dry-type transformer with an air guide plate structure. There are edge air guide plates outside the coils, and interphase air guide plates between the coils. The cooling fan provides cooling air, and the air guide plates guide the air from the outside closer to the coil. Flows through, taking away heat.
It improves the heat dissipation effect of the coil, reduces the operating temperature of the coil, improves the safety and reliability of the equipment, avoids the harm to surrounding materials caused by excessive coil temperature, eliminates hidden dangers of accidents, and saves the use of iron core materials.
Smart Images
Figure CN222380384U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to a dry-type transformer with an air guide plate structure. Background Art
[0002] Transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are primary coil, secondary coil and iron core. Its main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), etc. It is widely used in various industries. Among them, dry-type transformers are mainly used in hospitals, residential areas, high-rise buildings, airports, docks and various mechanical equipment due to their flame retardant and explosion-proof advantages. With the continuous expansion of electricity consumption, the capacity of dry-type transformers is also increasing. During the operation of the transformer, the coil will produce losses, causing the temperature of the coil to increase. When the heat dissipation conditions are not good, the temperature of the coil is often very high, which accelerates the aging of the adjacent insulation parts, reduces the electrical safety performance of the transformer equipment, affects the service life of the equipment, and seriously affects the safe operation of the transformer.
[0003] like Figure 1 and Figure 2 As shown, the current industry solution is mainly to install a fan under the transformer coil, and provide cooling air to cool the coil through the rotation of the fan. Since the fan is installed in the front and back of the transformer, part of the cooling air will flow at a position far away from the transformer coil, and only a small amount of air will flow on both sides of the transformer coil, which cannot take away the heat of the coil. The heat dissipation effect is far below expectations, which is not conducive to the safe operation of the transformer equipment. Utility Model Content
[0004] The utility model aims to provide a dry-type transformer with an air guide plate structure, so as to solve the problems existing in the original transformer forced air cooling structure, improve the heat dissipation effect of the coil, reduce the operating temperature of the coil, and improve the safety and reliability of the equipment.
[0005] In order to solve the above technical problems, the utility model provides a dry-type transformer with an air guide plate structure, comprising a coil, an iron core and a clamp;
[0006] Cooling fans are provided at the front and rear of the transformer, and the cooling fans rotate to provide cooling air to cool the coils;
[0007] The outer side of the coil is provided with an edge air guide plate, and the interphase air guide plates are provided between the coils;
[0008] The edge air guide plates and the interphase air guide plates extend from one end of the coil to the other end, so that cooling air flows from the outside closer to the coil under the guidance of the air guide plates, thereby taking away the heat inside the coil.
[0009] Preferably, the edge air guide plates and the interphase air guide plates are both insulating air guide plates.
[0010] Preferably, both ends of the edge air guide plate are fixedly connected to the clamps of the transformer respectively.
[0011] Preferably, both ends of the edge air guide plate are fixedly connected to the clamps of the transformer via first fixed support plates.
[0012] Preferably, both ends of the interphase air guide plate are respectively fixedly connected to the clamps of the transformer.
[0013] Preferably, both ends of the edge air guide plate are fixedly connected to the clamps of the transformer via second fixed support plates.
[0014] Preferably, a foot is provided at the bottom of the transformer for installing the cooling fan.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] After the dry-type transformer adopts this air guide plate structure, after the cooling fan is started, the air can not only pass through the air duct inside the coil, but the edge air guide plates and the phase air guide plates can also guide the air to flow from the outside closer to the coil, so the ability to take away heat is enhanced, and the heat inside the coil can be dissipated in time; in addition, after the phase air guide plates are added between the coils, the radiation heat dissipation of the two coils is isolated, so that the heat dissipation of the two coils does not affect each other, the temperature of the transformer during operation is controlled, and the harm to the surrounding materials caused by excessive coil temperature is avoided, and the potential safety hazards are eliminated; after the insulating air guide plates are added between the phases and on both sides of the transformer coil, the electrical strength between the coils is also strengthened, avoiding transformer accidents caused by air breakdown between the two high-voltage coils, and improving the reliability of the transformer operation; in addition, after the insulating phase air guide plates are added between the phases of the transformer coil, the insulation distance between the two coils can be shortened, the use of transformer core materials is reduced, and the manufacturing cost is saved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is the front view of the dry-type transformer without air guide plate structure;
[0018] Figure 2 This is the side view of a dry-type transformer without an air guide plate structure;
[0019] Figure 3 This is a front view of a dry-type transformer with an air guide plate structure provided by the utility model;
[0020] Figure 4 It is a side view of a dry-type transformer with an air guide plate structure provided by the utility model;
[0021] Figure 5 The utility model is a top view of a dry-type transformer with an air guide plate structure.
[0022] In the figure: 1, coil; 2, iron core; 3, clamp; 4, cooling fan; 5, edge air guide plate; 6, interphase air guide plate; 7, first fixed support plate; 8, second fixed support plate; 9, base. DETAILED DESCRIPTION
[0023] The following is a further detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
[0024] In the description of the present utility model, 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 utility model 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 a limitation on the present utility model. In addition, the terms "first", "second", etc. 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. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection 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.
[0026] Embodiment 1
[0027] The utility model provides a dry-type transformer with an air guide plate structure. Figure 3-5, including a coil 1, an iron core 2 and a clamp 3; a cooling fan 4 is provided at the front and rear of the transformer, and the cooling fan 4 rotates to provide cooling air to cool the coil; an edge air guide plate 5 is provided on the outside of the coil 1, and an interphase air guide plate 6 is provided between the coils 1; wherein the edge air guide plate 5 and the interphase air guide plate 6 both extend from one end of the coil 1 to the other end, so that the cooling air flows from the outside closer to the coil under the guidance of the air guide plate, thereby taking away the heat inside the coil 1.
[0028] After the dry-type transformer adopts this air guide plate structure, after the cooling fan is started, the air can not only pass through the air duct inside the coil, but the edge air guide plates and the phase air guide plates can also guide the air to flow from the outside closer to the coil, thereby enhancing the ability to take away heat, and the heat inside the coil can be dissipated in time; in addition, after the phase air guide plates are added between the coils, the radiation heat dissipation of the two coils is isolated, so that the heat dissipation of the two coils does not affect each other, and the temperature of the transformer during operation is controlled, avoiding the harm of the surrounding materials caused by excessive coil temperature and eliminating potential accidents.
[0029] Specifically, the edge air guide plate 5 and the interphase air guide plate 6 are both insulating air guide plates. After adding insulating air guide plates between the phases and on both sides of the transformer coil, the electrical strength between the coils is also strengthened, avoiding transformer accidents caused by air breakdown between the two high-voltage coils, and improving the reliability of transformer operation; in addition, after adding insulating interphase air guide plates between the transformer coil phases, the insulation distance between the two coils can be shortened, reducing the amount of transformer core material used and saving manufacturing costs.
[0030] Specifically, two ends of the edge air guide plate 5 are respectively fixedly connected to the clamps 3 of the transformer.
[0031] Furthermore, two ends of the edge air guide plate 5 are fixedly connected to the clamp 3 of the transformer through a first fixed support plate 7 .
[0032] Specifically, two ends of the interphase air guide plate 6 are respectively fixedly connected to the clamps 3 of the transformer.
[0033] Furthermore, both ends of the edge air guide plate 5 are fixedly connected to the clamp 3 of the transformer via a second fixed support plate 8 .
[0034] Specifically, a foot 9 is provided at the bottom of the transformer for installing the cooling fan 4 .
[0035] The air guide plate structure of the utility model solves the deficiencies existing in the original transformer forced air cooling structure, improves the heat dissipation effect of the coil, reduces the operating temperature of the coil, and improves the safety and reliability of the equipment.
[0036] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.
Claims
1. A dry-type transformer with an air guide plate structure, characterized in that: It comprises a coil (1), an iron core (2) and a clamp (3); A cooling fan (4) is provided at the front and rear of the transformer, and the cooling fan (4) rotates to provide cooling air to cool the coil; The outer side of the coil (1) is provided with an edge air guide plate (5), and interlaced air guide plates (6) are provided between the coils (1); The edge air guide plate (5) and the interphase air guide plate (6) both extend from one end of the coil (1) to the other end, so that cooling air flows from the outside closer to the coil under the guidance of the air guide plate, thereby taking away the heat inside the coil (1).
2. A dry-type transformer with an air guide plate structure as claimed in claim 1, characterized in that: The edge air guide plates (5) and the interphase air guide plates (6) are both insulating air guide plates.
3. A dry-type transformer with an air guide plate structure as claimed in claim 1, characterized in that: Both ends of the edge air guide plate (5) are respectively fixedly connected to the clamping piece (3) of the transformer.
4. A dry-type transformer with an air guide plate structure as claimed in claim 3, characterized in that: Both ends of the edge air guide plate (5) are fixedly connected to the clamp (3) of the transformer via first fixed support plates (7).
5. A dry-type transformer with an air guide plate structure as claimed in claim 1, characterized in that: Both ends of the interphase air guide plate (6) are respectively fixedly connected to the clamping piece (3) of the transformer.
6. A dry-type transformer with an air guide plate structure as claimed in claim 5, characterized in that: Both ends of the edge air guide plate (5) are fixedly connected to the clamping member (3) of the transformer via second fixed support plates (8).
7. A dry-type transformer with an air guide plate structure as claimed in claim 1, characterized in that: A foot (9) is provided at the bottom of the transformer for mounting the cooling fan (4).