Dry-type transformer

Abstract

The utility model discloses a dry-type transformer which comprises a transformer body, two installation frames arranged at the bottom of the transformer body and two cross flow fans arranged at the tops of the installation frames, rubber pads are arranged between the cross flow fans and the installation frames, two supports are installed between the two installation frames, and dampers are installed at the tops of the two supports. A damper is arranged on the cross flow fan, a supporting rod is connected to the movable end of the damper, a connecting base is arranged in the middle of the supporting rod, two supports are installed on the two installation frames respectively, a sliding rod is integrally formed on the top of each support, and a spring is arranged on the outer side of each sliding rod in a sleeved mode. And a vibration transmission path of the cross-flow fan can be isolated through the arranged rubber pad, vibration is prevented from being transmitted to the transformer body, and therefore vibration borne by the transformer body is reduced, and the situation that bolts on the transformer body loosen and cause faults of the transformer body is avoided.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to a dry-type transformer. Background Technology

[0002] A dry-type transformer is a power transformer that relies on air convection for cooling. Compared with traditional oil-immersed transformers, its core and windings are not immersed in transformer oil, but are directly exposed to the air. There are two cooling methods: natural air cooling and forced air cooling. Under high load conditions, forced air cooling is usually used. This method uses fans to force air circulation, thereby improving heat dissipation efficiency.

[0003] The fans on existing dry-type transformers are generally fixed on the mounting bracket at the bottom. However, the fans generate vibrations during operation, which are transmitted to the dry-type transformer through the mounting bracket. After long-term use, the bolts on the dry-type transformer are prone to loosening, which leads to a significant increase in the contact resistance of the internal connection parts of the dry-type transformer. This causes a sharp increase in the heat generated at the connection parts. Excessive temperature will accelerate the aging of the insulation material at the connection parts, reduce its insulation performance, and may even cause insulation breakdown, leading to transformer failure and damage to core components such as transformer windings and iron core. Utility Model Content

[0004] The purpose of this invention is to provide a dry-type transformer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dry-type transformer, comprising a transformer body, two mounting brackets disposed at the bottom of the transformer body, and two crossflow fans disposed at the top of the mounting brackets. A rubber pad is provided between the crossflow fans and the mounting brackets. Two supports are installed between the two mounting brackets. A damper is installed at the top of each of the two supports. A support rod is connected to the movable end of the damper. A connecting seat is provided in the middle of the support rod. Two supports are installed on each of the two mounting brackets. A sliding rod is integrally formed at the top of each support. A spring is sleeved on the outer side of the sliding rod. Sleeves that slide slidably connect with the sliding rod are symmetrically provided at the bottom of the support rod. Both ends of the support rod are provided with curved portions, and a limit groove is formed at the top of each curved portion.

[0006] As a preferred embodiment of this utility model, the mounting bracket has a through-hole, and the support rod passes through the through-hole and extends to the outside of the mounting bracket.

[0007] As a preferred embodiment of this utility model, the bottom of the sleeve is provided with a circular plate, one end of the spring is pressed against the circular plate, and the other end of the spring is pressed against the support.

[0008] As a preferred embodiment of this utility model, the top of the rubber pad is provided with a groove that is compatible with the crossflow fan.

[0009] In a preferred embodiment of this utility model, both the connecting seat and the bent portion are connected to the crossflow fan by bolts.

[0010] As a preferred embodiment of this utility model, the bracket is provided with a fixing hole that is compatible with the damper.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the damper in this utility model can convert the vibration energy generated by the crossflow fan into heat energy consumption, and the rubber pad can isolate the vibration transmission path of the crossflow fan and block the vibration from propagating to the transformer body, thereby reducing the vibration of the transformer body, preventing the bolts on the transformer body from loosening and causing transformer body failure, and thus extending the service life. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0014] Figure 3 This utility model Figure 1 Enlarged view of point B in the middle;

[0015] Figure 4 This is the front view of the present invention;

[0016] Figure 5 This is a schematic diagram of the mounting frame and support rod of this utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the support rod of this utility model;

[0018] Figure 7 This is a schematic diagram of the structure of the bracket of this utility model.

[0019] In the diagram: 1. Transformer body; 2. Mounting bracket; 3. Crossflow fan; 4. Rubber pad; 5. Support rod; 6. Waist-shaped hole; 7. Connecting seat; 8. Damper; 9. Bracket; 10. Bend; 11. Slide rod; 12. Circular plate; 13. Sleeve; 14. Spring; 15. Support; 16. Groove; 17. Limiting groove; 18. Fixing hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 7 This utility model provides a technical solution: a dry-type transformer, including a transformer body 1, two mounting brackets 2 disposed at the bottom of the transformer body 1, and two crossflow fans 3 disposed at the top of the mounting brackets 2. A rubber pad 4 is provided between the crossflow fans 3 and the mounting brackets 2, which can isolate the vibration transmission path of the crossflow fans 3 and block the vibration from propagating to the transformer body 1. Two supports 9 are installed between the two mounting brackets 2, and dampers 8 are installed on the top of the two supports 9. The dampers 8 can convert the vibration energy generated by the crossflow fans 3 into heat energy for dissipation, thereby greatly reducing the vibration experienced by the transformer body 1 and preventing the bolts on the transformer body 1 from loosening. A support rod 5 is connected to the movable end of the damper 8, and a connecting seat 7 is provided in the middle of the support rod 5. Each of the two mounting brackets 2 is equipped with... Two supports 15 are provided, and a sliding rod 11 is integrally formed on the top of the supports 15. A spring 14 is sleeved on the outside of the sliding rod 11. The spring 14 can not only block the vibration of the crossflow fan 3 from being transmitted to the transformer body 1, but also absorb the vibration energy and store it as elastic potential energy in the early stage of vibration. In the later stage of vibration, the damper 8 converts the energy released by the spring 14 into heat energy, achieving efficient dissipation. At the same time, the spring 14 can bear part of the static load, reduce the force on the damper 8 in the static state, and extend its service life. The bottom of the support rod 5 is symmetrically provided with sleeves 13 that are slidably connected to the sliding rod 11. Both ends of the support rod 5 are provided with bent parts 10. The top of the bent parts 10 is provided with a limiting groove 17. The limiting groove 17 is used to limit one side of the crossflow fan 3 to ensure that the crossflow fan 3 is firmly connected to the bent part 10.

[0022] The mounting bracket 2 has a through-hole 6, which is used to limit the support rod 5 so that the support rod 5 can only move up and down along the direction of the through-hole 6. The support rod 5 passes through the through-hole 6 and extends to the outside of the mounting bracket 2.

[0023] The sleeve 13 has a circular plate 12 at its bottom, which allows the sleeve 13 to apply force to the spring 14. One end of the spring 14 is pressed against the circular plate 12, and the other end of the spring 14 is pressed against the support 15.

[0024] The rubber pad 4 has a groove 16 on its top that is compatible with the crossflow fan 3. The groove 16 makes the rubber pad 4 fit the crossflow fan 3 more closely and provides a certain limiting effect on the crossflow fan 3, making the installation of the crossflow fan 3 more stable.

[0025] Both the connecting seat 7 and the bent part 10 are connected to the crossflow fan 3 by bolts. The bolt connection is not only convenient but also secure.

[0026] The bracket 9 has a fixing hole 18 that is compatible with the damper 8. The bottom of the damper 8 can be inserted into the fixing hole 18 for fixing, ensuring that the damper 8 is installed firmly.

[0027] Specifically, when the crossflow fan 3 vibrates during operation, in the initial stage of vibration, the spring 14 is compressed by the circular plate 12. The spring 14 absorbs part of the vibration energy and stores it as elastic potential energy. In the later stage of vibration, the spring 14 springs back to its original position and releases its energy. The damper 8 converts the energy released by the spring 14 into heat energy to reduce vibration. In addition, the rubber pad 4 can block the vibration of the crossflow fan 3 from propagating to the transformer body 1, greatly reducing the vibration experienced by the transformer body 1 and preventing the bolts on the transformer body 1 from loosening.

[0028] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dry-type transformer comprising a transformer body (1), two mounting brackets (2) arranged at the bottom of the transformer body (1), and two cross-flow fans (3) arranged at the top of the mounting brackets (2), characterized in that: A rubber pad (4) is provided between the crossflow fan (3) and the mounting bracket (2). Two brackets (9) are installed between the two mounting brackets (2). A damper (8) is installed on the top of the two brackets (9). A support rod (5) is connected to the movable end of the damper (8). A connecting seat (7) is provided in the middle of the support rod (5). Two supports (15) are installed on each of the two mounting brackets (2). A sliding rod (11) is integrally formed on the top of the support (15). A spring (14) is sleeved on the outside of the sliding rod (11). A sleeve (13) is symmetrically provided at the bottom of the support rod (5) and is slidably connected to the sliding rod (11). A bent part (10) is provided at both ends of the support rod (5). A limit groove (17) is opened on the top of the bent part (10).

2. A dry-type transformer according to claim 1, characterized in that: The mounting bracket (2) has a through-hole (6), and the support rod (5) passes through the through-hole (6) and extends to the outside of the mounting bracket (2).

3. A dry-type transformer according to claim 1, characterized in that: The bottom of the sleeve (13) is provided with a circular plate (12), one end of the spring (14) abuts against the circular plate (12), and the other end of the spring (14) abuts against the support (15).

4. A dry-type transformer as claimed in claim 1, characterized in that: The top of the rubber pad (4) is provided with a groove (16) that is compatible with the crossflow fan (3).

5. A dry-type transformer as claimed in claim 1, characterized in that: Both the connecting seat (7) and the bent part (10) are connected to the crossflow fan (3) by bolts.

6. A dry-type transformer as claimed in claim 1, characterized in that: The bracket (9) has a fixing hole (18) that is compatible with the damper (8).

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