An oil immersed transformer

Abstract

The present application relates to an oil-immersed transformer, and relates to the technical field of transformers. The transformer comprises a body, and a plurality of heat dissipation fins are evenly distributed on two opposite vertical side surfaces of the body, and a traction handle is hinged on the other two vertical side surfaces of the body; a first shock-absorbing pad is fixedly arranged on the bottom side of the body, and a protective plate is hingedly arranged on the lower part of the side surface of the body on which the traction handle is installed, and the protective plate can be rotated upward to a position in contact with the vertical side surface and rotated downward to a position in contact with the bottom side of the body, and a locking piece detachably connected to the vertical side surface of the body is fixedly arranged on the protective plate; the maximum spacing between two corresponding heat dissipation fins does not exceed the cross-sectional width of the protective plate, and a second shock-absorbing pad is coated on the side surface of the protective plate away from the body when the protective plate is in a vertical state, and a plurality of waist-shaped fixing holes are opened on the protective plate; in the present application, the possibility of damage to the transformer caused by collision during transportation is comprehensively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to an oil-immersed transformer. Background Art

[0002] Oil-immersed transformers, as a power equipment widely used since the end of the 19th century, have the core advantage of using transformer oil as the insulation and cooling medium. This innovation not only gives the equipment excellent performance and cost-effectiveness, but also greatly improves the insulation effect through the clever combination with fiber materials, effectively shortens the insulation distance, and further reduces the manufacturing cost. However, although oil-immersed transformers play a pivotal role in power transmission and distribution, a key challenge in their practical application has gradually emerged - the problem of safety and stability during transportation.

[0003] In the related art, an oil-immersed transformer with publication number CN105590736A includes an oil tank and a transformer immersed in the oil tank, and high-voltage wire terminals and low-voltage wire terminals for connecting external cables are respectively provided on both sides of the upper end of the transformer, and the high-voltage wire terminals and low-voltage wire terminals are located outside the oil tank. A temperature probe is provided on the oil tank and placed inside the oil tank, and a temperature control instrument is provided outside the oil tank and connected to the temperature probe through a wire.

[0004] In complex transportation environments, especially when passing through rugged, bumpy and changeable roads, oil-immersed transformers may face strong vibration shocks. This unexpected vibration may not only directly act on the transformer body, but may also be transmitted to the precision components inside the transformer, such as windings and cores, through the oil in the oil tank, causing potential structural damage or performance degradation, and there is room for improvement. Summary of the invention

[0005] The purpose of the present application is to provide an oil-immersed transformer to solve the problem in the above-mentioned related art that external vibration during transportation may cause damage to the transformer.

[0006] The oil-immersed transformer provided in this application adopts the following technical solution:

[0007] An oil-immersed transformer comprises a body, a plurality of heat dissipation fins are evenly distributed on two opposite vertical side surfaces of the body, and a traction handle is hinged on the other two vertical side surfaces of the body; a first shock-absorbing pad is fixedly arranged on the bottom side of the body, and a protective plate is hingedly arranged on the lower part of the side surface of the body on which the traction handle is installed, and the protective plate can be rotated upward to a position in contact with the vertical side surface and rotated downward to a position in contact with the bottom side of the body, and a locking piece detachably connected to the vertical side surface of the body is fixedly arranged on the protective plate; the maximum spacing between two corresponding heat dissipation fins does not exceed the cross-sectional width of the protective plate, and a second shock-absorbing pad is coated on the side surface of the protective plate away from the body when in a vertical state, and a plurality of waist-shaped fixing holes are opened on the protective plate.

[0008] By adopting the above technical solution, due to the coordinated arrangement of the protective plate, the first shock-absorbing pad and the second shock-absorbing pad, when the transformer is in the transportation state, the protective plate is adjusted to the vertical side surface of the main body. In this state, the sides of the two protective plates that are away from each other provide shock-absorbing protection for the side surfaces of the main body on which the traction handle is installed, and the other two opposite vertical edges of the protective plate provide shock-absorbing protection for the two side surfaces of the main body on which the heat dissipation fins are installed, and the first shock-absorbing pad provides shock-absorbing protection for the bottom side of the main body; thereby comprehensively reducing the possibility of damage to the transformer caused by bumps during transportation.

[0009] Optionally, a limiting notch is formed on the protection plate for the vertical side of the main body to be placed therein, and a side wall of the limiting notch abuts against a side edge of the main body to which the heat dissipation fins are fixed.

[0010] By adopting the above technical solution, due to the setting of the limiting notch, when the protective plate is rotated upward to a vertical state, the edge of the vertical side of the main body is inserted into the limiting notch, thereby improving the installation stability of the protective plate when it is in a vertical state.

[0011] Optionally, the locking member includes a compression spring and a locking block, and a placement groove for the compression spring and the locking block to be placed is provided on the side wall of the limiting notch. The locking block is squeezed by the compression spring so that a part of itself escapes from the opening of the placement groove, and a positioning groove for the locking block to be protruding and inserted is provided on the side of the main body on which the heat dissipation fins are installed.

[0012] By adopting the above technical solution, due to the installation arrangement of the locking piece, when the protective plate is rotated upward to a vertical state, the edge of the vertical side of the main body is inserted into the limiting notch, and the locking block is squeezed by the compression spring and a part of itself is disengaged from the opening of the placement slot. At the same time, the protruding part of the locking block is inserted into the corresponding positioning groove, thereby locking the protective plate in the vertical state, reducing the possibility of the protective plate in this state loosening during the transportation of the transformer.

[0013] Optionally, there is an installation gap between the bottom side of the limiting notch and the vertical side of the main body, a mounting through hole is opened on the bottom side of the limiting notch, and a cooling fan is fixedly provided on the opening edge of the mounting through hole facing the vertical side of the main body of the protective plate.

[0014] By adopting the above technical solution, due to the coordinated arrangement of the installation gap and the heat dissipation fan, when the protective plate is fixed to the bottom side of the main body, the heat dissipation fan can be started to enhance the gas circulation on the bottom side of the main body and improve its heat dissipation performance.

[0015] Optionally, a moving component is provided on the protective plate, and the moving component includes a plurality of moving wheels and corresponding connecting parts, and the connecting parts are used to connect the protective plate and the moving wheels; when the protective plate rotates to the bottom side of the main body, the moving wheels can rotate with the connecting parts and can be removably fixed to the upper side or bottom side of the protective plate in this state.

[0016] By adopting the above technical solution, due to the coordinated arrangement of the connecting parts and the moving wheels, when it is necessary to move the transformer a short distance on the ground, the transformer can be first lifted to a moving height, and then the moving wheels can be rotated to the side of the protective plate facing the ground and fixed; when the movement is completed, the transformer can be lifted again, and then the moving wheels can be reset and fixed; this facilitates the short-distance movement of the transformer.

[0017] Optionally, installation notches are provided on two opposite side surfaces of the protective plate, and the connecting member includes a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the inner wall of the installation notch, and the two ends of the second connecting rod are respectively hinged to the moving wheel and the other end of the first connecting rod, and the protective plate is provided with a mounting groove on the upper side surface on the bottom side of the main body for the moving wheel to be flipped into.

[0018] By adopting the above technical solution, during the adjustment process of the moving wheel, the moving wheel and the protective plate are connected by the first connecting rod and the second connecting rod. The moving wheel can be flipped upward to be placed and fixed inside the installation groove, and can also be flipped downward to abut against the ground.

[0019] Optionally, a wear-resistant sleeve is fixedly provided on the outer periphery of the traction handle.

[0020] By adopting the above technical solution, due to the provision of the wear-resistant sleeve, when the lifting equipment is towing the traction handle, the possibility of damage to the traction handle is reduced, thereby extending the service life of the traction handle.

[0021] Optionally, a plurality of anti-slip convex strips are evenly distributed on the outer side surface of the wear-resistant sleeve.

[0022] By adopting the above technical solution, due to the provision of the anti-slip convex strips, the possibility of relative sliding when the staff holds the traction handle is reduced.

[0023] Optionally, a positioning notch is provided on the protective plate for the traction handle to be rotatably inserted, and the outer side surface of the wear-resistant sleeve is tightly pressed against the inner wall of the positioning notch.

[0024] By adopting the above technical solution, due to the setting of the positioning notch, when the protective plate is in a vertical state and fixed, the handle can be rotated downward to the inside of the positioning notch to further lock the protective plate in this state, thereby further reducing the possibility of the protective plate in this state becoming loose during transportation of the transformer.

[0025] Optionally, a first magnetic block is embedded in the traction handle, and a second magnetic block is embedded in the inner wall of the positioning notch to abut against and attract the first magnetic block.

[0026] By adopting the above technical solution, when the traction handle is rotated to the inside of the positioning notch, the first magnetic block and the second magnetic block abut against and attract each other, thereby further locking the protective plate in this state.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Due to the coordinated arrangement of the protective plate, the first shock-absorbing pad and the second shock-absorbing pad, when the transformer is in the transportation state, the protective plate is adjusted to the vertical side of the main body. In this state, the sides of the two protective plates that are away from each other provide shock-absorbing protection for the side of the main body where the traction handle is installed, and the other two opposite vertical edges of the protective plate provide shock-absorbing protection for the two side surfaces of the main body where the heat dissipation fins are installed, and the first shock-absorbing pad provides shock-absorbing protection for the bottom side of the main body; in this way, the possibility of damage to the transformer caused by bumps during transportation is comprehensively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the structure of the first shock-absorbing pad installation and coordination in an embodiment of the present application;

[0032] Figure 3 is a schematic cross-sectional structural diagram of the embodiment of the present application embodying the installation and cooperation of the locking member;

[0033] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0034] Figure 5 This is a schematic diagram of the structure of the embodiment of the present application when the protective plate abuts against the bottom side of the main body;

[0035] Figure 6 It is a partial cross-sectional structural schematic diagram of the installation and matching of the traction handle in the embodiment of the present application;

[0036] Figure 7 yes Figure 6 A magnified schematic diagram of part B;

[0037] Figure 8 This is a schematic diagram of the structure of the heat dissipation fan installation and coordination in the embodiment of the present application;

[0038] Fig. 9 It is a partial cross-sectional structural schematic diagram of the installation and matching of the mobile component in the embodiment of the present application;

[0039] Fig.10 It is a schematic diagram of the partial cross-sectional structure of the embodiment of the present application embodying the installation and cooperation of the connecting parts.

[0040] In the figure, 1, main body; 11, heat dissipation fin; 12, traction handle; 121, wear-resistant sleeve; 1211, anti-skid convex strip; 122, first magnetic block; 13, first shock-absorbing pad; 14, positioning groove; 2, protective plate; 21, second shock-absorbing pad; 22, waist-shaped fixing hole; 23, limiting notch; 231, placement groove; 232, installation through hole; 24, positioning notch; 25, second magnetic block; 26, installation notch; 27, installation sink groove; 3, locking piece; 31, compression spring; 32, locking block; 5, moving assembly; 51, moving wheel; 52, connecting piece; 521, first connecting rod; 522, second connecting rod; 6, cooling fan. DETAILED DESCRIPTION

[0041] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0042] Example:

[0043] Reference Figure 1 and Figure 2 An oil-immersed transformer includes a body 1, wherein a plurality of heat dissipation fins 11 are evenly distributed on two opposite vertical sides of the body 1, and a traction handle 12 is hinged on the other two vertical sides of the body 1; when installing the transformer, the traction handle 12 can be pulled up and down by a lifting device (such as a gantry crane) to move and adjust the position of the transformer.

[0044] Reference Figure 2 and Figure 3The lower part of the side of the body 1 on which the traction handle 12 is installed is hinged with a protective plate 2, the maximum distance between two corresponding heat dissipation fins 11 does not exceed the cross-sectional width of the protective plate 2, and the protective plate 2 can be rotated upward to fit with the vertical side and rotated downward to fit with the bottom side of the body 1, and a locking piece 3 detachably connected to the vertical side of the body 1 is fixed on the protective plate 2;

[0045] A first shock-absorbing pad 13 is fixed to the bottom side of the main body 1 by glue, and a second shock-absorbing pad 21 is coated on the side of the protective plate 2 away from the main body 1 when in a vertical state, and both the first shock-absorbing pad 13 and the second shock-absorbing pad 21 are made of rubber and have good shock-absorbing performance; when the transformer is in a transportation state, the protective plate 2 is adjusted to the vertical side of the main body 1, and in this state, the sides of the two protective plates 2 away from each other provide shock-absorbing protection for the side of the main body 1 on which the traction handle 12 is installed, and the other two opposite vertical edges of the protective plate 2 provide shock-absorbing protection for the two sides of the main body 1 on which the heat dissipation fins 11 are installed, and the first shock-absorbing pad 13 provides shock-absorbing protection for the bottom side of the main body 1.

[0046] Reference Figure 3 A limiting notch 23 is provided on the protective plate 2 for the vertical side of the main body 1 to be placed therein, wherein the side wall of the limiting notch 23 abuts against the side edge of the main body 1 on which the heat dissipation fins 11 are fixed, thereby improving the installation stability of the protective plate 2 when it is in a vertical state.

[0047] Reference Figure 3 and Figure 4 The locking member 3 includes a compression spring 31 and a locking block 32, wherein a placement groove 231 for the compression spring 31 and the locking block 32 is provided on the side wall of the limiting notch 23, and the locking block 32 is disengaged from a part of itself from the opening of the placement groove 231 under the pressure of the compression spring 31, and the protruding part of the locking block 32 is an arc surface, and the arc length corresponding to the arc surface is a minor arc, and a positioning groove 14 for the locking block 32 to be protruded and inserted is provided on the side of the main body 1 on which the heat dissipation fins 11 are installed; when the protective plate 2 is rotated upward to a vertical state, the edge of the vertical side of the main body 1 is inserted into the limiting notch 23, and the protruding part of the locking block 32 is inserted into the corresponding positioning groove 14.

[0048] Reference Figure 3 and Figure 5 , a number of waist-shaped fixing holes 22 are evenly distributed on the protective plate 2; after the protective plate 2 is rotated to the bottom side of the main body 1, screws can be used to penetrate the waist-shaped fixing holes 22 and then fix the transformer on the surface to be installed.

[0049] Reference Figure 6A wear-resistant sleeve 121 made of rubber is fixed on the outer periphery of the traction handle 12, and a plurality of anti-slip convex strips 1211 are evenly distributed on the outer surface of the wear-resistant sleeve 121; when the traction handle 12 is towed by the lifting equipment, the possibility of damage to the traction handle 12 is reduced, thereby extending the service life of the traction handle 12.

[0050] Reference Figure 6 and Figure 7 A positioning notch 24 is provided on the protective plate 2 for the traction handle 12 to be rotatably inserted, and the outer side surface of the wear-resistant sleeve 121 is tightly pressed against the inner wall of the positioning notch 24; a first magnetic block 122 is embedded in the traction handle 12, and a second magnetic block 25 is embedded on the inner wall of the positioning notch 24 to abut against and attract the first magnetic block 122.

[0051] When transporting the transformer, the protective plate 2 is adjusted to a vertical state. At this time, the traction handle 12 can be rotated into the positioning notch 24 on the protective plate 2, and the anti-slip ridge 1211 on the wear-resistant sleeve 121 is pressed against the inner wall of the positioning notch 24, and the first magnetic block 122 and the second magnetic block 25 are in contact and attracted to each other, thereby further locking the protective plate 2 in this state and reducing the possibility of loose installation of the protective plate 2 in this state during transportation.

[0052] Reference Figure 8 , Fig. 9 and Fig.10 The protective plate 2 is provided with a moving assembly 5, wherein the moving assembly 5 includes four moving wheels 51 and corresponding connecting pieces 52, wherein the connecting pieces 52 are used to connect the protective plate 2 and the moving wheels 51; when the protective plate 2 rotates to the bottom side of the body 1, the moving wheels 51 can rotate with the connecting pieces 52 and be detachably fixed to the upper side or bottom side of the protective plate 2 in this state by butterfly bolts;

[0053] The protective plate 2 is provided with mounting notches 26 on two opposite sides, wherein the connecting member 52 includes a first connecting rod 521 and a second connecting rod 522, one end of the first connecting rod 521 is hinged to the inner wall of the mounting notch 26, and the two ends of the second connecting rod 522 are respectively hinged to the moving wheel 51 and the other end of the first connecting rod 521, and a mounting groove 27 for the moving wheel 51 to be flipped and placed is provided on the upper side surface of the protective plate 2 at the bottom side of the body 1;

[0054] When the transformer needs to be moved a short distance on the ground, the transformer can be hoisted to a higher height first, and then the moving wheel 51 is rotated to the side of the protective plate 2 facing the ground and fixed; when the movement is completed, the transformer can be hoisted again, and then the moving wheel 51 is reset.

[0055] Reference Figure 6 and Figure 8A mounting through hole 232 is provided at the bottom side of the limiting notch 23, and a heat dissipation fan 6 is fixedly provided on the opening edge of the mounting through hole 232 of the protective plate 2 facing the vertical side of the main body 1, wherein the heat dissipation fan 6 is a fan driven by a conventional small motor; an installation gap is provided between the bottom side of the limiting notch 23 and the vertical side of the main body 1 to make way for the heat dissipation fan 6; when the protective plate 2 is fixed to the bottom side of the main body 1, the heat dissipation fan 6 can be started to enhance the gas circulation at the bottom side of the main body 1 and improve its heat dissipation performance.

[0056] The implementation principle of the embodiment of the present application is:

[0057] When the transformer is in the transport state, the protective plate 2 is adjusted to the vertical side of the body 1. In this state, the sides of the two protective plates 2 that are away from each other provide shock absorption protection for the side of the body 1 where the traction handle 12 is installed, and the other two opposite vertical edges of the protective plate 2 provide shock absorption protection for the two side surfaces of the body 1 where the heat dissipation fins 11 are installed, and the first shock absorption pad 13 provides shock absorption protection for the bottom side of the body 1;

[0058] When the transformer needs to be moved a short distance on the ground, the transformer can be hoisted to a higher height first, and then the moving wheel 51 is rotated to the side of the protective plate 2 facing the ground and fixed; when the movement is completed, the transformer can be hoisted again, and then the moving wheel 51 is reset;

[0059] When the transformer is installed and fixed, the protective plate 2 is rotated to the bottom side of the main body 1, and the transformer is fixed to the surface to be installed after the screws are penetrated through the waist-shaped fixing holes 22; in this state, the air circulation on the bottom side of the main body 1 can be enhanced by starting the cooling fan 6 to improve its heat dissipation performance.

[0060] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0061] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An oil-immersed transformer, comprising a body (1), a plurality of heat dissipation fins (11) being evenly distributed on two opposite vertical side surfaces of the body (1), and a traction handle (12) being hingedly connected to the other two vertical side surfaces of the body (1); It is characterized in that A first shock-absorbing pad (13) is fixedly arranged on the bottom side of the body (1); a protective plate (2) is hingedly arranged on the lower part of the side of the body (1) on which the traction handle (12) is installed; the protective plate (2) can be rotated upward to a position in contact with the vertical side surface and rotated downward to a position in contact with the bottom side of the body (1); a locking piece (3) is fixedly arranged on the protective plate (2) and is detachably connected to the vertical side surface of the body (1); The maximum spacing between two corresponding heat dissipation fins (11) does not exceed the cross-sectional width of the protective plate (2); the side of the protective plate (2) away from the main body (1) in a vertical state is covered with a second shock-absorbing pad (21); the protective plate (2) is provided with a plurality of waist-shaped fixing holes (22); the protective plate (2) is provided with a limiting notch (23) for the vertical side of the main body (1) to be inserted, and the side wall of the limiting notch (23) is in contact with the side edge of the main body (1) on which the heat dissipation fins (11) are fixed; The locking member (3) comprises a compression spring (31) and a locking block (32); a placement groove (231) for the compression spring (31) and the locking block (32) to be placed is provided on the side wall of the limiting notch (23); the locking block (32) is pressed by the compression spring (31) so that a part of itself escapes from the opening of the placement groove (231); and a positioning groove (14) for the locking block (32) to be protrudingly inserted is provided on the side of the body (1) on which the heat dissipation fins (11) are mounted; The protective plate (2) is provided with a moving assembly (5), the moving assembly (5) comprising a plurality of moving wheels (51) and corresponding connecting pieces (52), the connecting pieces (52) being used to connect the protective plate (2) and the moving wheels (51); when the protective plate (2) rotates to the bottom side of the body (1), the moving wheels (51) can rotate along with the connecting pieces (52) and can be detachably fixed to the upper side or bottom side of the protective plate (2) in this state; The protective plate (2) is provided with mounting notches (26) on two opposite sides thereof; the connecting member (52) comprises a first connecting rod (521) and a second connecting rod (522); one end of the first connecting rod (521) is hinged to the inner wall of the mounting notch (26); the two ends of the second connecting rod (522) are respectively hinged to the moving wheel (51) and the other end of the first connecting rod (521); and the protective plate (2) is provided with a mounting recess (27) on the upper side surface at the bottom side of the main body (1) for the moving wheel (51) to be flipped and placed.

2. The oil-immersed transformer according to claim 1, characterized in that: There is an installation gap between the bottom side of the limiting notch (23) and the vertical side of the main body (1), and a mounting through hole (232) is provided on the bottom side of the limiting notch (23). A heat dissipation fan (6) is fixedly provided on the opening edge of the mounting through hole (232) facing the vertical side of the main body (1) on the protective plate (2).

3. The oil-immersed transformer according to claim 1, characterized in that: A wear-resistant sleeve (121) is fixedly provided on the outer periphery of the traction handle (12).

4. The oil-immersed transformer according to claim 3, characterized in that: A plurality of anti-slip convex strips (1211) are evenly distributed on the outer side surface of the wear-resistant sleeve (121).

5. The oil-immersed transformer according to claim 3, characterized in that: The protective plate (2) is provided with a positioning notch (24) for the traction handle (12) to be rotated and inserted, and the outer side surface of the wear-resistant sleeve (121) is tightly pressed against the inner wall of the positioning notch (24).

6. The oil-immersed transformer according to claim 5, characterized in that: A first magnetic block (122) is embedded in the traction handle (12), and a second magnetic block (25) is embedded in the inner wall of the positioning notch (24) and abuts against and attracts the first magnetic block (122).

Images