Structure suitable for hot-line replacement of draught fan of dry-type transformer

Abstract

The utility model discloses a structure suitable for live-line fan replacement of a dry-type transformer, which relates to the technical field of dry-type transformers and comprises a box body, a foot margin arranged at the bottom in the box body, a transformer whole arranged on the foot margin and two moving components symmetrically arranged on two sides of the transformer whole. A fan assembly is detachably arranged on the moving assembly, the moving assembly can drive the fan assembly to enter and exit from the box body, a plurality of net plates are detachably connected to the box body, and the net plates are arranged at the two ends of the moving assembly; according to the structure suitable for live-line replacement of the draught fan of the dry-type transformer, the draught fan can be replaced without moving the whole box body or cutting off power, so that the stability of a power system is ensured, and the maintenance efficiency and safety are improved.

Description

Technical Field

[0001] This utility model relates to the field of dry-type transformer technology, specifically to a structure suitable for replacing fans in a dry-type transformer under energized conditions. Background Technology

[0002] In traditional designs, transformers are typically equipped with axial fans and protective enclosures to improve heat dissipation and protect the internal structure.

[0003] However, in practical applications, to save space and improve space utilization, transformers with enclosures are generally placed against two walls. This results in one enclosure door being unable to be opened, making replacement and maintenance extremely inconvenient if the fan fails. Sometimes, the entire enclosure even needs to be moved out for replacement. Furthermore, the interior space of the enclosure is quite compact, limiting the manpower available for replacement. Additionally, the transformer must be de-energized before replacement can be performed, thus affecting the stability of the power system and maintenance efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a structure suitable for replacing fans of dry-type transformers under energized conditions. This structure allows for fan replacement without moving the entire housing or disconnecting the power, thereby ensuring the stability of the power system and improving maintenance efficiency and safety.

[0005] The above-mentioned optimized structure of this utility model is achieved through the following technical solution: a structure suitable for replacing the fan of a dry-type transformer under energized conditions, including a housing, a base provided at the bottom of the housing, a transformer assembly provided on the base, two movable components provided on the base, the two movable components being symmetrically arranged on both sides of the transformer assembly, a fan assembly being detachably provided on the movable component, the movable component being able to drive the fan assembly in and out of the housing, multiple mesh plates being detachably connected to the housing, and the mesh plates being provided at both ends of the movable component.

[0006] In some embodiments, the movable component includes a fan bracket, which is mounted on the base. A movable bracket is mounted on the fan bracket, which can slide on the fan bracket. The fan component is mounted on the movable bracket, and a plurality of fixing bolts are detachably connected between the fan bracket and the movable bracket.

[0007] In some embodiments, the fan bracket includes two support plates, two limiting plates are symmetrically arranged on the two support plates, and a sliding groove is formed between the two limiting plates and the two support plates. The sliding groove contains a slidable movable bracket.

[0008] In some embodiments, a limiting plate is provided at one end of each of the two limiting plates.

[0009] In some embodiments, the movable support includes two grooved plates, with multiple connecting plates connected between the two grooved plates, and the fan assembly is disposed on the two grooved plates.

[0010] In some embodiments, one end of each of the two grooved plates is provided with a handle.

[0011] In some embodiments, the bottom of the mesh panel is lower than the bottom of the movable support.

[0012] In some embodiments, the housing is further provided with a miniature circuit breaker, which is electrically connected to the wind turbine assembly.

[0013] In summary, this utility model has the following beneficial effects:

[0014] This structure, suitable for replacing fans while the transformer is energized, mounts the fan assembly on a movable component and uses a detachable mesh plate to pull the fan assembly out of the housing without interrupting the power supply to the entire transformer. This allows for rapid fan replacement without moving the housing or disconnecting the power, ensuring the stability of the power system and improving maintenance efficiency and safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a side view of the present invention;

[0017] Figure 3 This is a top view of the wind turbine support frame of this utility model;

[0018] Figure 4 This is a top view of the movable support frame of this utility model.

[0019] In the diagram: 1. Transformer assembly; 2. Foot; 3. Fan bracket; 31. Support plate; 32. Limiting plate; 33. Sliding groove; 34. Limiting plate; 4. Moving bracket; 41. Channel plate; 42. Connecting plate; 43. Handle; 5. Fan assembly; 6. Fixing bolts; 7. Miniature circuit breaker; 8. Housing; 9. Mesh plate. Detailed Implementation

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

[0021] refer to Figure 1-4 A structure suitable for live replacement of fans in dry-type transformers includes a housing 8. The bottom of the housing 8 is provided with base plates 2, which provide a supporting foundation for the internal structure. A transformer assembly 1 is mounted on the base plates 2. Two movable components are also mounted on the base plates 2, symmetrically arranged on both sides of the transformer assembly 1. Fan assemblies 5 are detachably mounted on the movable components. Each fan assembly 5 may include at least three fans, which are equally spaced on one side of the transformer assembly 1. The three fans can be connected in parallel to the circuit system of the transformer assembly 1. The movable components can move the fan assemblies 5 in and out of the housing 8. Therefore, in the event of a fan failure, the fan can be moved out of the housing 8 without moving the entire housing 8 or disconnecting the power, thus ensuring the stability of the power system and improving maintenance efficiency and safety.

[0022] Multiple mesh panels 9 are detachably connected to the housing 8. Both ends of the movable component are covered with mesh panels 9. The mesh panels 9 can be used for ventilation and protection of the internal structure of the housing 8, and can also provide an inlet and outlet for the movable component, so that the fan can be moved out without moving the housing 8.

[0023] In some embodiments, the movable component includes a fan bracket 3, which is mounted on a base 2 and connected by a bolt assembly. The fan bracket 3 includes two support plates 31, which may be U-shaped plates. Two limiting plates 32, which may be L-shaped plates, are symmetrically arranged on the two support plates 31. A sliding groove 33 is formed between the two limiting plates 32 and the two support plates 31. A slidable movable bracket 4 is provided in the sliding groove 33. A plurality of fixing bolts 6 can be used to achieve a detachable connection between the movable bracket 4 and the fan bracket 3, facilitating the installation and disassembly of the fan component. The detachable connection between the movable bracket 4 and the fan bracket 3 by fixing bolts 6 is prior art and will not be described in detail here.

[0024] The movable support 4 can slide on the fan support 3. The movable support 4 includes two channel plates 41, and multiple connecting plates 42 are connected between the two channel plates 41. Fan components 5 are provided on the two channel plates 41 and can be connected by bolt assemblies. Multiple fixing bolts 6 are detachably connected between the fan support 3 and the movable support 4. The fixing bolts 6 can realize the fixing and separation between the fan support 3 and the movable support 4.

[0025] In some embodiments, a limiting plate 34 is provided at one end of each of the two limiting plates 32, which can limit the movement range of the movable bracket 4 in the sliding groove 33, improve the accuracy of the installation position of the fan assembly 5, and ensure the heat dissipation effect of the fan assembly 5; at the same time, it can improve the connection strength between the two limiting plates 32, thereby improving the overall stability of the fan bracket 3.

[0026] In some embodiments, one end of each of the two channel plates 41 is provided with a handle 43, which makes it easy for the operator to manually pull the movable support 4 to realize the entry and exit of the fan assembly 5. Multiple rollers may be provided on the bottom side of the two channel plates 41. The rollers can convert the surface friction between the channel plate 41 and the limiting plate 32 into multi-point rolling friction, thereby reducing the friction between the channel plate 41 and the limiting plate 32 and improving the smoothness of the movement of the movable support 4.

[0027] In some embodiments, the bottom of the mesh plate 9 may be lower than the bottom of the movable support 4 to ensure that the fan assembly 5 does not interfere with the mesh plate 9 during movement.

[0028] In some embodiments, the housing 8 is also provided with a miniature circuit breaker 7, which is electrically connected to the wind turbine assembly 5. The miniature circuit breaker 7 can realize the circuit connection and disconnection between the wind turbine assembly 5 and the transformer assembly 1, thereby cutting off the wind turbine power supply when necessary and ensuring operational safety. The specific structure of the miniature circuit breaker 7 is the prior art and will not be described in detail here.

[0029] The specific working principle is as follows:

[0030] When replacing the wind turbine, the operator first ensures the turbine assembly is in a safe condition by operating the miniature circuit breaker 7. If not necessary, the assembly can be kept energized during operation. Then, loosen the fixing bolts 6 and use the handle 43 to pull the moving bracket 4 along with the wind turbine assembly 5 out of the sliding groove 33 to the outside of the enclosure. After replacing the wind turbine assembly outside the enclosure, the new or repaired wind turbine assembly is pushed back into the sliding groove using the moving bracket, and the fixing bolts are tightened to complete the replacement process. Throughout this process, there is no need to move the entire enclosure or disconnect the transformer from power, greatly simplifying the maintenance process and improving work efficiency.

[0031] First, install the transformer assembly 1 onto the enclosure 8. Then, use bolt assemblies to install the fan bracket 3 onto the foot 2 on both sides of the transformer assembly 1. The movable bracket 4 and the fan assembly 5 are fixed with bolts. After fixing the fan assembly 5, insert the movable bracket 4 into the sliding groove 33 of the fan bracket 3 from the side and fit one end face of the movable bracket 4 against the limiting plate 34. Use fixing bolts 6 to fix the fan bracket 3 and the movable bracket 4. Then, connect the fans in the fan assemblies 5 on both sides of the transformer assembly 1 in parallel to form two fan lines. Connect the two fan lines to the two miniature short circuits 7 on the side of the enclosure 8. Finally, fix the mesh plate 9 onto the side of the enclosure 8.

[0032] When a fan malfunctions, turn off the miniature circuit breaker 7, remove the mesh plate 9, then disconnect the fan wire connected to the miniature circuit breaker 7, remove the fixing bolts 6, and pull out the movable bracket 4. Replace or repair the faulty fan. After completion, reverse the process to quickly replace the fan without moving the housing or disconnecting the power.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A structure suitable for live-line fan replacement in dry-type transformers, characterized in that: The device includes a housing (8), with a base (2) at the bottom inside the housing (8). A transformer assembly (1) is mounted on the base (2). Two moving components are also mounted on the base (2). The two moving components are symmetrically arranged on both sides of the transformer assembly (1). A fan assembly (5) is detachably mounted on the moving component. The moving component can drive the fan assembly (5) to enter and exit the housing (8). Multiple mesh plates (9) are detachably connected to the housing (8). The mesh plates (9) are mounted on both ends of the moving component.

2. The structure for replacing a blower under energized conditions in a dry-type transformer according to claim 1, characterized in that: The movable component includes a fan bracket (3), which is mounted on the foot (2). A movable bracket (4) is mounted on the fan bracket (3), which can slide on the fan bracket (3). The fan component (5) is mounted on the movable bracket (4). A plurality of fixing bolts (6) are detachably connected between the fan bracket (3) and the movable bracket (4).

3. The structure for replacing a blower under energized conditions in a dry-type transformer according to claim 2, characterized in that: The fan bracket (3) includes two support plates (31), and two limiting plates (32) are symmetrically arranged on the two support plates (31). A sliding groove (33) is formed between the two limiting plates (32) and the two support plates (31), and a sliding movable bracket (4) is provided in the sliding groove (33).

4. The structure for replacing a blower while the transformer is energized, as described in claim 3, is characterized in that: One end of each of the two limiting plates (32) is provided with a limiting plate (34).

5. The structure for replacing a blower while the transformer is energized, as described in claim 2, is characterized in that: The movable support (4) includes two grooved plates (41), and multiple connecting plates (42) are connected between the two grooved plates (41). The fan assembly (5) is provided on the two grooved plates (41).

6. The structure for replacing a blower while the transformer is energized, as described in claim 5, is characterized in that: Each of the two grooved plates (41) has a handle (43) at one end.

7. The structure for replacing a blower under energized conditions in a dry-type transformer according to claim 2, characterized in that: The bottom of the mesh plate (9) is lower than the bottom of the movable support (4).

8. The structure for replacing fans on-line in dry-type transformers according to claim 1, characterized in that: The housing (8) is also equipped with a miniature circuit breaker (7), which is electrically connected to the fan assembly (5).

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