Dry-type transformer cooling device

Abstract

A dry-type transformer cooling device comprises a cooling fan body installed on the lower portion of a dry-type transformer, an air outlet of the cooling fan body is arranged upwards, a dustproof plate is arranged on the air outlet, the dustproof plate is movably connected with the cooling fan body through adjusting units, and the adjusting units are arranged at the two ends of the cooling fan body in the length direction of the cooling fan body. The dustproof plate can rotate to one side of the air outlet; the adjusting units comprise spindles, the spindles are connected with one ends of the dustproof plates through connecting rods, the connecting rods are rotationally connected with the spindles, and lifting assemblies are arranged on the connecting rods of at least one adjusting unit. According to the utility model, the dustproof plate covers the air outlet of the cooling fan, so that a dustproof effect is achieved; before the cooling fan is used, the dustproof plate can be rotated to a proper position through the rotation angle of the connecting rod on the main shaft, the air outlet of the cooling fan body is not influenced to blow cooling air to the dry-type transformer, heat dissipation and cooling of the dry-type transformer by the cooling fan body are not influenced, more dust entering the dry-type transformer can be reduced, and the service life of the dry-type transformer is prolonged. The performance is influenced.

Description

Technical Field

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

[0002] A dry-type transformer uses dry-type insulation materials. Unlike oil-immersed transformers, it does not use oil as an insulating or cooling medium. For dry-type transformers with higher power or longer operating times, a cooling fan is typically installed underneath the transformer. When heat is needed, the cooling fan blows air upward from the bottom of the transformer, dissipating the heat.

[0003] Existing dry-type transformers are installed indoors or outdoors, and the cooling air outlet of the cooling fan is set on its upper end surface. When it is not in operation, a lot of dust will accumulate at its outlet. When it is used next time, the dust will be directly blown into the dry-type transformer by the cooling air. If dust accumulates on the windings and heat sinks of the dry-type transformer for a long time, it will affect its heat dissipation effect and may cause failure. Utility Model Content

[0004] In order to solve the technical problems existing in the above background technology, the utility model provides a dry-type transformer cooling device.

[0005] The technical solution of this utility model is as follows:

[0006] A dry-type transformer cooling device includes a cooling fan body mounted on the lower portion of the dry-type transformer, the air outlet of the cooling fan body being arranged upward, a dust shield being provided above the air outlet along its length, the dust shield being movably connected to the cooling fan body via an adjustment unit, the adjustment units being symmetrically provided in two sets and arranged at both ends of the cooling fan body along its length, the dust shield being able to rotate to one side of the air outlet without interfering with the cooling fan body;

[0007] The adjustment unit includes a main shaft arranged at one end of the cooling fan body. The main shaft is connected to the dustproof plate at one end along its length direction through a connecting rod, and the connecting rod is rotatably connected to the main shaft. A lifting assembly is provided on the connecting rod of at least one adjustment unit. The lifting assembly is located on one side of the end of the cooling fan body, and its lifting direction is vertical. The output end of the lifting assembly is slidably connected to the connecting rod.

[0008] When the cooling fan is not in use, the dustproof plate is placed on the air outlet of the cooling fan to prevent dust. Before the cooling fan is used, the dustproof plate can be rotated to a suitable position by adjusting the rotation angle of the connecting rod on the main shaft, so as not to affect the air outlet of the cooling fan body to blow cooling air to the dry-type transformer. This does not affect the heat dissipation and cooling of the dry-type transformer by the cooling fan body, but also reduces the amount of dust that enters the dry-type transformer and affects its performance.

[0009] The structure of the above-mentioned dustproof plate is that the dustproof plate is an arc-shaped plate, the center of the arc-shaped plate coincides with the axis of the main shaft, and the arc-shaped dustproof plate can be easily moved on the upper part of the cooling fan body. Compared with the straight plate structure, it can reduce the collision between the dustproof plate and the cooling fan body.

[0010] The connection structure between the lifting component and the connecting rod is that the lifting component can be an electric push rod or a hydraulic cylinder, and a sliding part is provided on the upper part of the output end of the lifting component. The sliding part is sleeved on the outside of the connecting rod, and one side of the sliding part is hinged to the output end to ensure that the lifting component can drive the connecting rod to rotate a certain angle on the main shaft when lifting, thereby adjusting the position of the dust shield at the air outlet.

[0011] In order to prevent dust on the dust shield from falling into the air outlet when the dust shield moves to the side of the air outlet, a folded edge is provided on the side of the dust shield close to the dry-type transformer, and a dust collecting trough is formed at the intersection of the folded edge and the side of the dust shield.

[0012] The cooling fan body and the dustproof plate are arranged in the dry-type transformer in the following positions: the dry-type transformer includes a dry-type transformer body, a transverse channel steel and a longitudinal channel steel distributed up and down; the cooling fan body and the dustproof plate are arranged on one side of the transverse channel steel, and their length direction is consistent with the length direction of the transverse channel steel.

[0013] The cooling fan body is installed in the transverse channel steel. In order to prevent the transverse channel steel from blocking the air outlet of the cooling fan, a plurality of ventilation openings are opened on the upper part of the transverse channel steel along its length direction, and the ventilation openings are located above the air outlet.

[0014] In order to prevent the dust shield from colliding with the transverse channel steel when rotating with the connecting rod, thereby affecting its rotation, the horizontal plane where the dust shield can reach its highest position is lower than the horizontal plane where the inner upper surface of the transverse channel steel is located.

[0015] Regarding the structure of the connecting rod, there are at least two connecting rods. The ends of the two connecting rods on the same side away from the main shaft are respectively connected to the two sides of the dustproof plate. The two connecting rods can stably rotate the corresponding end of the dustproof plate to connect it to the cooling fan body.

[0016] In order to automatically open the dust shield when the temperature of the dry-type transformer reaches the set value, the lifting assembly and the cooling fan body are electrically connected to the external control module respectively, and the control module is electrically connected to the temperature module of the dry-type transformer. When the temperature module detects that the temperature of the dry-type transformer reaches the set temperature, it sends a signal to the control module. The control module processes the signal and controls the lifting assembly to retract. The dust shield rotates to the side of the air outlet driven by the connecting rod, and the control module controls the cooling fan to start.

[0017] The beneficial effects of the present invention are:

[0018] When the cooling fan body is not in use, the lifting assembly is in the extended state, and the dustproof plate is set between the transverse channel steel and the air outlet of the cooling fan body to prevent dust from entering the air outlet. When the dry-type transformer needs to be cooled, the lifting assembly is controlled to retract, and the upper end of the lifting assembly drives the connecting rod to rotate along the main axis to move the angle, so that the dustproof plate moves to the outside of the air outlet without affecting the air blowing from the air outlet.

[0019] The dust shield is an arc-shaped plate, the center of which coincides with the axis of the main shaft. The arc-shaped dust shield can be easily moved on the upper part of the cooling fan body, which can reduce the collision between the dust shield and the cooling fan body compared to the straight plate structure.

[0020] A folded edge is provided on the side of the dustproof plate close to the dry-type transformer. A dust collecting groove is formed at the intersection of the folded edge and the side of the dustproof plate. When the dustproof plate moves to the side of the air outlet, the dust collecting groove can prevent dust on the dustproof plate from falling into the air outlet.

[0021] A sliding joint is provided on the upper part of the output end of the lifting assembly. The sliding joint is sleeved on the outside of the connecting rod, and one side of the sliding joint is hinged to the output end to ensure that the lifting assembly can drive the connecting rod to rotate a certain angle on the main shaft when lifting, thereby adjusting the position of the dustproof plate at the air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the attached figure:

[0023] Figure 1 It is a structural diagram;

[0024] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;

[0025] Figure 3 It is the right view;

[0026] Figure 4 It is a schematic diagram of the cooling fan body and the adjustment unit structure;

[0027] Figure 5 for Figure 4 Schematic diagram of the structure when the middle dust shield is opened;

[0028] The components represented by the reference numerals in the figure are:

[0029] 1. Dry-type transformer; 101. Horizontal channel steel; 1011. Ventilation opening; 102. Longitudinal channel steel; 2. Cooling fan body; 201. Air outlet; 3. Dust shield; 301. Folding edge; 4. Main shaft; 5. Connecting rod; 6. Lifting assembly; 7. Sliding joint. DETAILED DESCRIPTION

[0030] See also Figure 1 、 Figure 2 and Figure 3 As shown, a cooling device for a dry-type transformer 1 includes a cooling fan body 2 installed at the lower part of the dry-type transformer 1, an air outlet 201 of the cooling fan body 2 is arranged upward, and a dustproof plate 3 is provided above the air outlet 201 along its length direction. The dustproof plate 3 is movably connected to the cooling fan body 2 through an adjustment unit. The adjustment unit is symmetrically provided in two groups and is arranged at both ends of the cooling fan body 2 along its length direction. The dustproof plate 3 can be rotated to the side of the air outlet 201 without interfering with the cooling fan body 2.

[0031] The dry-type transformer 1 includes a dry-type transformer 1 body, a transverse channel steel 101, and a longitudinal channel steel 102, which are arranged in an upper and lower manner. The cooling fan body 2 and the dust shield 3 are arranged on one side of the transverse channel steel 101, and their length direction is consistent with the length direction of the transverse channel steel 101. The cooling fan body 2 is partially installed in the transverse channel steel 101. To prevent the transverse channel steel 101 from blocking the air outlet of the cooling fan, the upper portion of the transverse channel steel 101 is provided with a plurality of ventilation openings 1011 along its length. The ventilation openings 1011 are located above the air outlet 201. To prevent the dust shield 3 from colliding with the transverse channel steel 101 when rotating with the connecting rod 5, thereby affecting its rotation, the horizontal plane at the highest position that the dust shield 3 can reach is lower than the horizontal plane of the inner upper surface of the transverse channel steel 101.

[0032] The adjustment unit includes a main shaft 4 provided at one end of the cooling fan body 2. The main shaft 4 is connected to the dustproof plate 3 along one end of its length by a connecting rod 5, and the connecting rod 5 is rotatably connected to the main shaft 4. A lifting assembly 6 is provided on the connecting rod 5 of at least one adjustment unit. The lifting assembly 6 is located on one side of the end of the cooling fan body 2, and its lifting direction is vertical. The output end of the lifting assembly 6 is slidably connected to the connecting rod 5. Regarding the structure of the connecting rod 5, the connecting rod 5 can be a cylindrical structure or a square structure. There are at least two connecting rods 5. The ends of the two connecting rods 5 on the same side away from the main shaft 4 are respectively connected to the two sides of the dustproof plate 3. The two connecting rods 5 can stably rotatably connect the corresponding end of the dustproof plate 3 to the cooling fan body.

[0033] See also Figure 4 As shown, when the cooling fan body 2 of this embodiment is not in use, the lifting assembly 6 is in an extended state, and the dustproof plate 3 is arranged between the transverse channel steel 101 and the air outlet 201 of the cooling fan body 2 to prevent dust from entering the air outlet 201; see Figure 5As shown, when the dry-type transformer 1 needs to be cooled and dissipated, the lifting assembly 6 is controlled to retract by the control module, and the upper end of the lifting assembly 6 drives the connecting rod 5 to rotate along the main shaft 4 by an angle, so that the dustproof plate 3 is rotated to the side outside the air outlet 201. The rotation direction of the dustproof plate 3 is away from the side of the dry-type transformer 1, and does not affect the air blowing of the air outlet 201. The dustproof plate 3 is rotated to the side outside the air outlet 201, and the control module controls the cooling fan body to operate to achieve heat dissipation and cooling of the dry-type transformer 1.

[0034] See also Figure 2 and Figure 5 As shown, the structure of the dustproof plate 3 of this embodiment is that the dustproof plate 3 is an arc-shaped plate, and the curvature of the dustproof plate 3 is less than 120 degrees. The curvature of the arc-shaped plate can be set according to the width of the air outlet 201 of the cooling fan body 2 and the distance between the air outlet 201 and the inner upper surface of the transverse channel steel 101. To facilitate the rotation of the arc-shaped plate on the cooling fan body 2 without colliding with the cooling fan body 2, the center of the arc-shaped plate of this embodiment coincides with the axis of the main shaft 4. The arc-shaped structure of the dustproof plate 3 can be easily moved on the upper part of the cooling fan body 2. Compared with a straight plate structure, the collision between the dustproof plate 3 and the cooling fan body 2 can be reduced. In order to prevent dust on the dustproof plate 3 from falling into the air outlet 201 when the dustproof plate 3 moves to the side of the air outlet 201, a folded edge 301 is provided on the side of the dustproof plate 3 close to the dry-type transformer 1. The intersection of the folded edge 301 and the side of the dustproof plate 3 forms an ash collecting groove, which can prevent dust on the dustproof plate 3 from falling into the air outlet 201.

[0035] The connection structure between the lifting component 6 and the connecting rod 5 is that the lifting component 6 can be an electric push rod or a hydraulic cylinder. A sliding part 7 is provided on the upper part of the output end of the lifting component 6. The sliding part 7 has a sleeve structure and is adapted to the connecting rod. The sliding part 7 is sleeved on the outside of the connecting rod 5, and one side of the sliding part is hinged to the output end through a hanging ring. A hanging ring is also provided at the output end. The two hanging rings are hinged to ensure that the lifting component 6 can drive the connecting rod 5 to rotate a certain angle on the main shaft 4 when lifting, thereby adjusting the position of the dustproof plate 3 at the air outlet 201.

[0036] In order to automatically open the dustproof plate 3 when the temperature of the dry-type transformer 1 reaches the set value, the lifting assembly 6 and the cooling fan body are respectively electrically connected to the external control module, and the control module is electrically connected to the temperature module of the dry-type transformer 1. When the temperature module detects that the temperature of the dry-type transformer 1 reaches the set temperature, it sends a signal to the control module. The control module processes the signal and controls the lifting assembly 6 to retract. The dustproof plate 3 is driven by the connecting rod 5 to rotate to the side of the air outlet 201, and the control module controls the cooling fan to start.

Claims

1. A dry-type transformer (1) cooling device, comprising a cooling fan body (2) installed at the lower part of the dry-type transformer (1), wherein the air outlet (201) of the cooling fan body (2) is arranged upward, and is characterized in that: A dustproof plate (3) is provided above the air outlet (201) along its length direction. The dustproof plate (3) is movably connected to the cooling fan body (2) through an adjustment unit. The adjustment unit is symmetrically provided in two groups and is arranged at both ends of the cooling fan body (2) along its length direction. The dustproof plate (3) can be rotated to one side of the air outlet (201) without interfering with the cooling fan body (2). The regulating unit comprises a main shaft (4) arranged at one end of the cooling fan body (2); the main shaft (4) is connected to one end of the dustproof plate (3) along its length direction through a connecting rod (5); and the connecting rod (5) is rotatably connected to the main shaft (4); a lifting assembly (6) is provided on the connecting rod (5) of at least one regulating unit; the lifting assembly (6) is located on one side of the end of the cooling fan body (2); its lifting direction is vertical; and the output end of the lifting assembly (6) is slidably connected to the connecting rod (5).

2. A cooling device for a dry-type transformer (1) according to claim 1, characterized in that: The dustproof plate (3) is an arc-shaped plate, and the center of the arc-shaped plate coincides with the axis of the main shaft (4).

3. A cooling device for a dry-type transformer (1) according to claim 1, characterized in that: A sliding member (7) is provided on the upper portion of the output end of the lifting assembly (6). The sliding member (7) is sleeved on the outside of the connecting rod (5), and one side of the sliding member is hinged to the output end.

4. A cooling device for a dry-type transformer (1) according to claim 1, characterized in that: A folded edge (301) is provided on one side of the dustproof plate (3) close to the dry-type transformer (1), and a dust collecting trough is formed at the intersection of the folded edge (301) and the side of the dustproof plate (3).

5. A dry-type transformer (1) cooling device according to claim 1, characterized in that: The dry-type transformer (1) comprises a dry-type transformer (1) body, a transverse channel steel (101) and a longitudinal channel steel (102) distributed vertically. The cooling fan body (2) and the dustproof plate (3) are arranged on one side of the transverse channel steel (101), and their length direction is consistent with the length direction of the transverse channel steel (101).

6. A dry-type transformer (1) cooling device according to claim 5, characterized in that: The upper portion of the transverse channel steel (101) is provided with a plurality of ventilation openings (1011) along its length direction, and the ventilation openings (1011) are located above the air outlet (201).

7. A dry-type transformer (1) cooling device according to claim 5, characterized in that: The horizontal plane where the highest position that the dustproof plate (3) can reach is located is lower than the horizontal plane where the inner upper surface of the transverse channel steel (101) is located.

8. A cooling device for a dry-type transformer (1) according to claim 1, characterized in that: At least two connecting rods (5) are provided, and the ends of the two connecting rods (5) located on the same side away from the main shaft (4) are respectively connected to the two sides of the dustproof plate (3).

9. A dry-type transformer (1) cooling device according to claim 1, characterized in that: The lifting assembly (6) and the cooling fan body are respectively electrically connected to an external control module, and the control module is electrically connected to a temperature module of the dry-type transformer (1).

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