A special device for online replacement of cooling fan of large dry-type transformer

Abstract

A special device for online replacement of a heat dissipation fan of a large dry-type transformer comprises a base plate, a base frame, and a fan body, wherein the fan body is mounted on the base frame, and a placement structure, a fixing structure, and a clamping structure are provided on the base plate. The present invention belongs to the technical field of dry-type transformers, and the beneficial effects of the present invention are as follows: the present invention is a special device for online replacement of a heat dissipation fan of a large dry-type transformer, by pulling out the secondary track to the end, at which time the fan body has reached the edge of the transformer casing, rotating the first fixing bolt so that the first fixing bolt no longer fixes the limit block, and pulling the third-level slide rail again until the fan body is completely dragged out, and the fan body can be removed from the base frame, thereby solving the problem that when the heat dissipation fan fails, a power outage must be carried out for replacement, otherwise a large amount of heat will be generated when the transformer is running with a fault and cannot be effectively and timely discharged, posing a potential power supply safety hazard, and also shortening the service life of the transformer.

Description

Technical Field

[0001] The invention belongs to the technical field of dry-type transformers, and in particular relates to a special device for online replacement of a heat dissipation fan of a large dry-type transformer. Background Art

[0002] The excitation transformer is an important equipment for the operation of the unit. It is a large dry-type transformer. An important condition for its stable operation is to ensure reliable heat dissipation of the equipment. The conventional forced air cooling measure is to configure a fan at the bottom of each winding of the transformer to blow air to the transformer core and windings, generating forced air convection, so that the temperature of the transformer does not rise to the normal allowable operating temperature, thereby meeting the needs of safe operation. When the cooling fan fails, the power must be shut down for replacement. Otherwise, the transformer will generate a lot of heat when running with a fault, which cannot be effectively and timely discharged, posing a potential safety hazard to power supply. At the same time, it also shortens the service life of the transformer. In view of this, this case was created. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention aims to provide a special device for online replacement of a heat dissipation fan of a large dry-type transformer.

[0004] The technical solution adopted by the present invention is:

[0005] A dedicated device for online replacement of a heat dissipation fan of a large dry-type transformer, characterized in that it comprises a bottom plate, a bottom frame, and a fan body, wherein the fan body is mounted on the bottom frame, and the bottom plate is provided with:

[0006] A placement structure is located on the bottom plate, the placement structure includes a primary track, the primary track is installed on the wall surface of the bottom plate, a primary slider is movably provided on the primary track, a secondary track is movably provided on the primary slider, a secondary slider is movably provided on the secondary track, a secondary slider is movably provided on the secondary track, a tertiary track is movably provided on the secondary slider, a bottom frame is provided on the tertiary track, the fan body is installed on the bottom frame, a locking assembly is provided on the bottom plate, and a fixing assembly is provided on the bottom frame;

[0007] A fixed structure is located on the bottom plate, the fixed structure includes a moving plate and a fixed column, the moving plate is mounted on the fixed column, a moving component is provided on the bottom plate, and a limit component is provided on the moving plate;

[0008] A clamping structure, located on the bottom plate, comprising a fixed clamping block and a guide column, wherein the fixed clamping block is mounted on the bottom plate, the guide column is mounted on the fixed clamping block, and a transmission assembly is provided on the fixed clamping block;

[0009] The limiting assembly includes a limiting hole and a clamping plate, wherein the limiting hole is arranged on the lower wall of the bottom plate, the clamping plate is mounted on the movable plate, a working box is arranged on the clamping plate, a sliding assembly is arranged in the working box, and a driving assembly is arranged in the working box;

[0010] The sliding assembly comprises a sliding groove and a sliding plate, wherein the sliding groove is arranged on the working box, and the sliding plate is movably arranged on the sliding groove;

[0011] The driving assembly includes a pull rod, a clamping column and a spring, one end of the spring is installed on the working box and the other end of the spring is installed on the sliding plate, the pull rod is installed on the sliding plate and one end of the pull rod passes through the working box away from the bottom plate, the clamping column is installed on the sliding plate and one end of the clamping column passes through the working box close to the bottom plate, and the clamping column is adapted to the limiting hole.

[0012] As a preferred embodiment of the present invention, the fixing assembly includes a fixing plate, the fixing plate is mounted on the base frame, the fixing plate is provided with a first fixing bolt, the first fixing bolt is provided with a limit block, and the limit block abuts against the three-level track.

[0013] As a preferred embodiment of the present invention, the limit block is provided with a notch adapted to the three-level track.

[0014] As a preferred embodiment of the present invention, the locking assembly includes a locking frame, which is mounted on the base plate, a first locking plate is provided on the tertiary track, a second locking plate is provided on the secondary track, and a second fixing bolt is provided on the locking frame.

[0015] As a preferred embodiment of the present invention, the first locking plate is larger than the second locking plate.

[0016] As a preferred embodiment of the present invention, the moving component includes a slide groove and a sliding block, the slide groove is arranged on the lower wall surface of the bottom plate, the sliding block is installed on the moving plate and the sliding block is movably connected to the slide groove.

[0017] As a preferred embodiment of the present invention, the transmission assembly includes a threaded rod and a movable clamping block, the threaded rod is movably arranged on the fixed clamping block, the movable clamping block is movably installed on the guide column and the movable clamping block is movably connected to the threaded rod, a ratchet is provided on the threaded rod, a fixed frame is provided on the base plate, a pawl is movably provided on the fixed frame, and the pawl abuts against the ratchet.

[0018] The beneficial effects of the present invention are as follows: as a special device for online replacement of a cooling fan of a large dry-type transformer, the present invention can pull out the secondary track to the end, at which time the fan body has reached the edge of the transformer casing, and rotate the first fixing bolt so that the first fixing bolt no longer fixes the limit block. The third-level slide rail is pulled again until the fan body is completely dragged out, and the fan body can be removed from the chassis, which solves the problem that when a cooling fan fails, a power outage must be carried out for replacement. Otherwise, a large amount of heat will be generated when the transformer is running with a fault and cannot be effectively and timely discharged, posing a potential power supply safety hazard, and also shortening the service life of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a main structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the base plate of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the fixing plate of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the movable plate of the present invention;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the working box of the present invention;

[0025] Figure 6 It is a schematic diagram of the internal cross-sectional structure of the working box of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixed clamp block of the present invention;

[0027] Figure 8 is a schematic diagram of the three-dimensional structure of the first locking plate of the present invention;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the chassis of the present invention;

[0029] In the figure: 1, bottom plate, 2, primary track, 3, primary slider, 4, secondary track, 5, secondary slider, 6, tertiary track, 7, tertiary slider, 8, bottom frame, 9, fan body, 10, fixed plate, 11, first fixing bolt, 12, limit block, 13, first locking plate, 14, second fixing bolt, 15, locking frame, 16, slide groove, 17, limit hole, 18, movable plate, 19, sliding block, 20, fixed column, 21, working box, 22, sliding groove, 23, sliding plate, 24, spring, 25, pull rod, 26, clamping column, 27, clamping plate, 28, fixed clamping block, 29, guide column, 30, movable clamping block, 31, threaded rod, 32, ratchet, 33, pawl, 34, fixed frame, 35, placement frame, 36, drag chain, 37, second locking plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0032] Combine the following Figure 1-9 The specific implementation mode of the present invention is described. In one embodiment of the present invention, a dedicated device for online replacement of a heat dissipation fan of a large dry-type transformer comprises a base plate 1, a base frame 8, and a fan body 9. The fan body 9 is mounted on the base frame 8. The base plate 1 is provided with:

[0033] A placement structure is located on the bottom plate 1, and the placement structure includes a primary track 2, and the primary track 2 is installed on the upper wall of the bottom plate 1. A primary slider 3 is movably provided on the primary track 2, and a secondary track 4 is movably provided on the primary slider 3. A secondary slider 5 is movably provided on the secondary track 4, and a tertiary track 6 is movably provided on the secondary slider 5. A base frame 8 is provided on the tertiary track 6, and the fan body 9 is installed on the base frame 8. A locking assembly is provided on the bottom plate 1, and a fixing assembly is provided on the base frame 8. The base frame 8 and the fan are each provided with a pair, and the placement structure is provided with a pair located on the bottom plate 1, and the primary track 2 is provided with a pair, and the primary slider 3 is provided with a plurality of movable primary track 2, and the secondary track 4 is provided with a pair, which are respectively installed on a plurality of primary sliders 3, and the tertiary track 6 is provided with a pair, which are respectively installed on a plurality of secondary sliders 5, and the tertiary slider 7 is provided with a plurality of and respectively provided on the tertiary track 6, and the base frame 8 is fixed on a plurality of tertiary sliders 7 through a fixing assembly, and the locking assembly can prevent the secondary track 4 and the tertiary track 6 from moving around during operation;

[0034] A fixed structure is located on the bottom plate 1. The fixed structure includes a moving plate 18 and a fixed column 20. The moving plate 18 is installed on the fixed column 20. A moving component is provided on the bottom plate 1. A limit component is provided on the moving plate. The fixed column 20 is used for supporting the whole device. The moving component can drive the fixed column 20 to move. The limit component is used for fixing.

[0035] A clamping structure is located on the bottom plate 1, and the clamping structure includes a fixed clamping block 28 and a guide column 29. The fixed clamping block 28 is installed on the bottom plate 1, and the guide column 29 is installed on the fixed clamping block 28. The fixed clamping block 28 is provided with a transmission assembly;

[0036] The limiting assembly includes a limiting hole 17 and a clamping plate 27, wherein the limiting hole 17 is provided on the lower wall of the bottom plate 1, and the clamping plate 27 is installed on the movable plate 18, and a working box 21 is provided on the clamping plate 27, wherein a sliding assembly is provided in the working box 21, and a driving assembly is provided in the working box 21, and a plurality of limiting holes 17 are provided evenly on the lower wall of the bottom plate 1;

[0037] The sliding assembly includes a sliding groove 22 and a sliding plate 23. The sliding groove 22 is arranged on the working box 21. The sliding plate 23 is movably arranged on the sliding groove 22. The driving assembly can drive the sliding plate 23 to slide on the sliding groove 22.

[0038] The driving assembly includes a pull rod 25, a clamping column 26 and a spring 24, one end of the spring 24 is installed on the working box 21 and the other end of the spring 24 is installed on the sliding plate 23, the pull rod 25 is installed on the sliding plate 23 and one end of the pull rod 25 passes through the working box 21 away from the bottom plate 1, the clamping column 26 is installed on the sliding plate 23 and one end of the clamping column 26 passes through the working box 21 close to the bottom plate 1, the clamping column 26 is adapted to the limiting hole 17, and the clamping column 26 is movably connected to the limiting hole 17 under the action of the spring 24, the pull rod 25 can drive the sliding plate 23 to move, the spring 24 follows the movement, and the clamping column 26 synchronously follows the sliding plate 23 to move out of the limiting hole 17.

[0039] Advantageously, the fixing assembly includes a fixing plate 10, wherein the fixing plate 10 is mounted on the base frame 8, wherein a first fixing bolt 11 is provided on the fixing plate 10, wherein a limit block 12 is provided on the first fixing bolt 11, wherein the limit block 12 abuts against the tertiary track 6, and when fixing is required, the limit block 12 is positioned on the tertiary track 6, and the fixing bolt can tightly fix the limit block 12 on the tertiary track 6, thereby preventing the base frame 8 from moving during operation.

[0040] Advantageously, the limiting block 12 is provided with a notch adapted to the tertiary track 6 , and the adapted notch facilitates the stability of the limiting block 12 on the tertiary track 6 .

[0041] Advantageously, the locking assembly includes a locking frame 15, which is mounted on the base plate 1, a first locking plate 13 is provided on the tertiary track 6, a second locking plate 37 is provided on the secondary track 4, and a second fixing bolt 14 is provided on the locking frame 15, wherein the head end of the second fixing bolt 14 is located on the first locking plate 13, and the tail end is located in the locking frame 15, and the second fixing bolt 14 can fix the first locking plate 13, the second locking plate 37 and the locking frame 15 to prevent them from moving during operation.

[0042] Advantageously, the first locking plate 13 is larger than the second locking plate 37 , and the second locking plate 37 is located inside the first locking plate 13 during operation, so as to facilitate storage.

[0043] Advantageously, the movable assembly includes a slide groove 16 and a sliding block 19 , wherein the slide groove 16 is disposed on the lower wall of the base plate 1 , and the sliding block 19 is mounted on the movable plate 18 and is movably connected to the slide groove 16 , so that the sliding block 19 can slide in the slide groove 16 easily.

[0044] Beneficially, the transmission assembly includes a threaded rod 31 and a movable clamp 30, wherein the threaded rod 31 is movably arranged on the fixed clamp 28, the movable clamp 30 is movably mounted on the guide column 29 and the movable clamp 30 is movably connected to the threaded rod 31, a ratchet 32 ​​is provided on the threaded rod 31, the base plate 1 is provided with a fixed frame 34, a pawl 33 is movably provided on the fixed frame 34, the pawl 33 abuts against the ratchet 32, the guide column 29 is provided with a pair of threads, not all of the threaded rods 31 are provided with threads, the ratchet 32 ​​is provided at a position where the threaded rod 31 is not provided with threads, the pawl 33 abuts against the ratchet 32 ​​under the action of gravity, and the threaded rod 31 can drive the movable clamp 30 to slide on the guide column 29.

[0045] Working principle of the present invention:

[0046] The bottom plate 1 is placed under the transformer, and the pull rod 25 is pulled. The pull rod 25 drives the sliding plate 23 to slide in the sliding groove 22 in the working box 21. At this time, the spring 24 is compressed, and the clamping column 26 follows the sliding plate 23 to move away from the limiting hole 17 under the bottom plate 1. At this time, the sliding block 19 can be moved in the sliding groove 16 to drive the fixed column 20 on the movable plate 18 to move. The position of the fixed column 20 can be adjusted according to the space under the transformer, so as not to affect the overall stability while fixing the fixed clamping block 28 to the transformer base. After adjusting the position, the pull rod 25 is released, and the spring 24 is reset. The sliding plate 23 slides in the sliding groove 22 under the action of the spring 24, and the clamping column 26 follows the sliding plate 23 to move into the limiting hole 17 under the bottom plate 1 to limit and fix the fixed column 20. The threaded rod 31 is rotated, and the movable clamping block 30 slides on the guide column 29 under the action of the threaded rod 31 until the moving The movable clamp block 30 is connected to the transformer base. The base plate 1 can be fixed by the fixed clamp block 28 and the movable clamp block 30 to make it stable during operation. The fan body 9 is fixed on the base frame 8. The base frame 8 is fixed on the three-stage slider 7 through the cooperation of the first fixing bolt 11 and the limit block 12. When the fan fails and needs to be replaced, first remove the ventilation net at the lower part of the transformer casing, remove the second fixing bolt 14 on the first locking plate 13, and pull out the secondary track 4 to the end. At this time, the fan body 9 has reached the edge of the transformer casing. Turn the first fixing bolt 11 so that the first fixing bolt 11 no longer fixes the limit block 12, and pull the three-stage slide rail again until the fan body 9 is completely dragged out. The fan body 9 can be removed from the base frame 8 for replacement work. After the work is completed, follow the above steps in reverse to restore the transformer casing ventilation net. All replacement work is completed and the new fan can be put into operation.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. 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 according to specific circumstances.

[0048] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A dedicated device for online replacement of cooling fans of large dry-type transformers, characterized in that: The invention comprises a bottom plate (1), a bottom frame (8), and a fan body (9), wherein the fan body (9) is mounted on the bottom frame (8), and the bottom plate (1) is provided with: A placement structure, located on the base plate (1), the placement structure comprising a primary track (2), the primary track (2) being mounted on the upper wall of the base plate (1), a primary slider (3) being movably provided on the primary track (2), a secondary track (4) being movably provided on the primary slider (3), a secondary slider (5) being movably provided on the secondary track (4), a tertiary track (6) being movably provided on the secondary slider (5), a base frame (8) being provided on the tertiary track (6), the fan body (9) being mounted on the base frame (8), a locking assembly being provided on the base plate (1), and a fixing assembly being provided on the base frame (8); a fixed structure, located on the bottom plate (1), the fixed structure comprising a movable plate (18) and a fixed column (20), the movable plate (18) being mounted on the fixed column (20), the bottom plate (1) being provided with a movable component, and the movable plate (18) being provided with a limit component; a clamping structure, located on the base plate (1), the clamping structure comprising a fixed clamping block (28) and a guide column (29), the fixed clamping block (28) being mounted on the base plate (1), the guide column (29) being mounted on the fixed clamping block (28), and a transmission assembly being provided on the fixed clamping block (28); The limiting assembly comprises a limiting hole (17) and a clamping plate (27), wherein the limiting hole (17) is provided on the lower wall surface of the bottom plate (1), the clamping plate (27) is mounted on the movable plate (18), a working box (21) is provided on the clamping plate (27), a sliding assembly is provided in the working box (21), and a driving assembly is provided in the working box (21); The sliding assembly comprises a sliding groove (22) and a sliding plate (23), wherein the sliding groove (22) is arranged on the working box (21), and the sliding plate (23) is movably arranged on the sliding groove (22); The driving assembly comprises a pull rod (25), a clamping column (26) and a spring (24); one end of the spring (24) is mounted on the working box (21) and the other end of the spring (24) is mounted on the sliding plate (23); the pull rod (25) is mounted on the sliding plate (23) and one end of the pull rod (25) passes through the working box (21) away from the bottom plate (1); the clamping column (26) is mounted on the sliding plate (23) and one end of the clamping column (26) passes through the working box (21) close to the bottom plate (1); and the clamping column (26) is adapted to the limiting hole (17).

2. A dedicated device for online replacement of a large dry-type transformer cooling fan according to claim 1, characterized in that: The fixing assembly comprises a fixing plate (10), the fixing plate (10) being mounted on the base frame (8), the fixing plate (10) being provided with a first fixing bolt (11), the first fixing bolt (11) being provided with a limit block (12), the limit block (12) being in contact with the third-level track (6).

3. A dedicated device for online replacement of a large dry-type transformer cooling fan according to claim 2, characterized in that: The limit block (12) is provided with a notch adapted to the third-level track (6).

4. A dedicated device for online replacement of a large dry-type transformer cooling fan according to claim 1, characterized in that: The locking assembly comprises a locking frame (15), the locking frame (15) being mounted on the base plate (1), the third-level track (6) being provided with a first locking plate (13), the second-level track (4) being provided with a second locking plate (37), and the locking frame (15) being provided with a second fixing bolt (14).

5. A dedicated device for online replacement of a large dry-type transformer cooling fan according to claim 4, characterized in that: The first locking plate (13) is larger in size than the second locking plate (37).

6. A dedicated device for online replacement of a large dry-type transformer cooling fan according to claim 1, characterized in that: The moving assembly comprises a slide groove (16) and a sliding block (19); the slide groove (16) is arranged on the lower wall surface of the base plate (1); the sliding block (19) is mounted on the moving plate (18) and the sliding block (19) is movably connected to the slide groove (16).

7. The dedicated device for online replacement of a large dry-type transformer cooling fan according to claim 1, characterized in that: The transmission assembly comprises a threaded rod (31) and a movable clamping block (30), wherein the threaded rod (31) is movably mounted on the fixed clamping block (28), the movable clamping block (30) is movably mounted on the guide column (29) and the movable clamping block (30) is movably connected to the threaded rod (31), a ratchet (32) is provided on the threaded rod (31), the bottom plate (1) is provided with a fixed frame (34), a ratchet (33) is movably provided on the fixed frame (34), and the ratchet (33) abuts against the ratchet (32).

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