A protection structure of an oil-immersed transformer

Abstract

The application relates to the technical field of transformers, and provides a protection structure of an oil-immersed transformer, which comprises a transverse buffering assembly, a vertical buffering assembly and an anti-inclination assembly. One end of the vertical buffering assembly is fixedly connected with a body, and the other end is slidably abutted with the end of the transverse buffering assembly. When the body vibrates, the transverse buffering assembly pushes the vertical buffering assembly to move upwards, thereby limiting the vibration amplitude of the body. One end of the anti-inclination assembly is rotationally connected with the body, and the other end is lockingly connected with the end of the transverse buffering assembly. When the body inclines, the transverse buffering assembly is unlocked from the locking of the anti-inclination assembly, the anti-inclination assembly and the vertical buffering assembly form an included angle, so as to limit the body from toppling. The application not only can buffer the vibration of the body of the oil-immersed transformer, but also can increase the anti-overturning stability of the oil-immersed transformer, thereby ensuring the safe operation of the oil-immersed transformer under complex working conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, in particular to a protection structure of an oil-immersed transformer. BACKGROUND

[0002] At present, a rigid connection mode is generally adopted between the oil-immersed transformer and the fixed base, and the transformer body will generate electromagnetic vibration during operation. The fixed base with rigid connection has no buffering capacity, which is easy to cause mechanical damage problems such as deformation of the winding of the oil-immersed transformer, loosening of the iron core and damage of the insulation, aggravate the fatigue damage and long-term operation risk of the oil-immersed transformer, and seriously threaten the safe and stable operation of the power system. In addition, the commonly used fixed base (four-column support frame) has insufficient anti-overturning capacity and overall stability, and it is difficult to ensure the reliable fixation of the oil-immersed transformer under complex operation conditions. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a protection structure of an oil-immersed transformer, which can not only buffer the vibration effect of the oil-immersed transformer body, but also enhance the anti-overturning stability of the transformer body to ensure its safe operation under complex conditions.

[0004] The protection structure of the oil-immersed transformer provided by the embodiments of the present application comprises:

[0005] The body, the horizontal buffering assembly, the vertical buffering assembly and the anti-inclination assembly arranged at the bottom of the body, and the vertical buffering assembly and the anti-inclination assembly are arranged at both ends of the horizontal buffering assembly in parallel;

[0006] In some embodiments, the horizontal buffering assembly comprises a connecting rod and a horizontal mounting piece, the horizontal mounting piece has a mounting groove, a horizontal buffering piece is mounted in the mounting groove, a pushing piece is fixedly connected at both ends of the horizontal buffering piece, the pushing piece can slide in the mounting groove, and the connecting rod is rotationally connected with the body and the pushing piece.

[0007] One end of the vertical buffering assembly is fixedly connected with the body, and the other end is slidingly abutted with the end of the horizontal buffering assembly. When the body vibrates, the pushing piece of the horizontal buffering assembly pushes the vertical buffering assembly to move upward, thereby limiting the vibration amplitude of the body.

[0008] One end of the anti-inclination assembly is rotationally connected with the body, and the other end is lockingly connected with the end of the horizontal buffering assembly. When the body inclines, the pushing piece of the horizontal buffering assembly is unlocked from the lock of the anti-inclination assembly, the anti-inclination assembly and the vertical buffering assembly form an included angle to limit the body from toppling over.

[0009] In some embodiments, the pushing piece comprises a sliding part, one end of the sliding part is provided with a first pushing part and a second pushing part, the first pushing part is in sliding abutment with the vertical buffer assembly, the second pushing part is in abutment with the anti-tilting assembly, the other end of the sliding part is fixedly connected with the transverse buffer piece and rotatably connected with the connecting rod.

[0010] In some embodiments, the vertical buffer assembly comprises a first buffer piece, a second buffer piece and a buffer spring, the top of the first buffer piece is provided with a first buffer cavity, the buffer spring and the second buffer piece are arranged in the first buffer cavity, the second buffer piece slides in the first buffer cavity, and the bottom of the first buffer piece is in sliding abutment with the first pushing part.

[0011] In some embodiments, the second buffer piece has a second buffer cavity, a piston and a piston rod are arranged in the second buffer cavity, one end of the piston rod is fixedly connected with the body bottom, and the other end is fixedly connected with the piston.

[0012] The piston is provided with a limiting piece and a one-way adjusting piece, the one-way adjusting piece and the limiting piece are fixedly installed on the inner wall of the piston, the limiting piece is oppositely arranged on the upper and lower sides of the one-way adjusting piece, and the one-way adjusting piece is used for preventing reverse opening.

[0013] In some embodiments, the one-way adjusting piece comprises a mounting shaft and a movable plate, the movable plate is rotatably installed on both sides of the mounting shaft.

[0014] In some embodiments, the anti-tilting assembly comprises a locking assembly and a supporting assembly, the supporting assembly is provided with a locking hole, the locking assembly is installed in the locking hole, the end of the transverse mounting piece is provided with a through hole, and one end of the locking assembly passes through the through hole and is in abutment with the pushing piece.

[0015] In some embodiments, the supporting assembly comprises a first supporting piece, a second supporting piece, a supporting spring and a supporting wheel, one end of the first supporting piece is rotatably connected with the bottom surface of the body, the other end is provided with a sliding cavity, the supporting spring and one end of the second supporting piece are installed in the sliding cavity, the second supporting piece can slide in the sliding cavity, and the other end of the second supporting piece is provided with the supporting wheel.

[0016] In some embodiments, the locking assembly comprises a lock shaft, spring balls and a return spring, the spring balls are installed in the lock shaft, one end of the lock shaft is in abutment with the second pushing part, and the other end of the lock shaft and one end of the return spring are installed in the locking hole.

[0017] In some embodiments, the protection structure further comprises a protection assembly arranged on the air side of the body, the protection assembly comprising a buffer air bag and a protection air bag, the buffer air bag and the protection air bag being in communication, the buffer air bag being inflated when subjected to an external force to inflate the protection air bag, the buffer air bag being provided with a supporting spring.

[0018] The application has the following beneficial effects:

[0019] The protection structure comprises a horizontal buffer assembly, a vertical buffer assembly and an anti-inclination assembly, the vertical buffer assembly and the anti-inclination assembly being arranged at two ends of the horizontal buffer assembly; one end of the vertical buffer assembly is fixedly connected to the body, and the other end is slidably abutted to the end of the horizontal buffer assembly, the horizontal buffer assembly pushing the vertical buffer assembly to move upward when the body vibrates to limit the vibration amplitude of the body; one end of the anti-inclination assembly is rotatably connected to the body, and the other end is lockingly connected to the end of the horizontal buffer assembly, the horizontal buffer assembly unlocking the lock of the anti-inclination assembly when the body inclines, and the anti-inclination assembly and the vertical buffer assembly form an included angle to limit the body from toppling over. Based on this, the horizontal buffer assembly of the protection structure not only buffers the vibration of the body, but also pushes the vertical buffer assembly to vertically displace to hinder the vibration of the body, thereby improving the anti-vibration performance of the body itself; at the same time, the horizontal buffer assembly is used to unlock the lock of the anti-inclination assembly when the body inclines, so that the anti-inclination assembly plays a role of anti-inclination support, thereby increasing the anti-overturning stability of the oil-immersed transformer.

[0020] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 The overall schematic diagram of the protection structure of the oil-immersed transformer of the application is shown;

[0023] Figure 2 The structural schematic diagram of the pushing piece and the vertical buffer assembly of the application is shown;

[0024] Figure 3 The cross-sectional view of the vertical buffer assembly of the application is shown;

[0025] Figure 4 The cross-sectional view of the anti-inclination assembly of the application is shown;

[0026] Figure 5 A cross-sectional view of the protection assembly of the present application is shown.

[0027] 100, body; 1, transverse buffering assembly; 11, connecting rod; 12, transverse mounting; 121, mounting groove; 122, through hole; 13, transverse buffer; 14, pushing piece; 141, sliding part; 142, first pushing part; 143, second pushing part; 2, vertical buffering assembly; 21, first buffer; 22, second buffer; 23, buffer spring; 24, first buffer cavity; 25, second buffer cavity; 26, piston; 261, limiting piece; 262, one-way adjusting piece; 263, mounting shaft; 264, movable plate; 27, piston rod; 3, anti-inclination assembly; 31, locking assembly; 311, locking shaft; 312, spring ball; 313, return spring; 32, support assembly; 321, first support; 322, second support; 323, support spring; 324, support wheel; 325, sliding cavity; 33, locking hole; 34, spring; 200, protection assembly; 201, buffer airbag; 202, protection airbag; 203, first protection plate; 204, second protection plate; 205, protection spring; 206, valve. DETAILED DESCRIPTION

[0028] The terms "comprise", "comprising", "contain", "containing", or "characterized by" in the specification and claims of the present application and the said drawings are synonymous with "include", "including", or "characterized by" and are inclusive or open ended and do not exclude additional, non-recited elements or method steps. "Comprising" is a term of art that is used in the patent law to mean that the recited elements are present, but that additional elements can also be present and still form a construct or method within the scope of the claim.

[0029] It should be noted that like reference numerals and letters refer to like items throughout the drawings, and as a result, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings, and furthermore, the terms "first", "second", "third" and the like are used merely to distinguish descriptions and are not to be construed as indicating or implying relative importance. The term "about" in the present application means including minor variations of the stated value (up to + / - 10%).

[0030] The oil-immersed transformer body generates electromagnetic vibration during operation. The fixed base connected rigidly does not have buffering capacity, which is easy to cause mechanical damage such as deformation of the winding of the oil-immersed transformer, loosening of the core, and damage of the insulation, and the commonly used fixed base has insufficient anti-overturning capacity and overall stability, and it is difficult to ensure the reliable fixing of the oil-immersed transformer under complex operating conditions.

[0031] With reference to the drawings of the embodiments herein, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments herein, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0032] Reference herein to“an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments to one another. It is explicitly and implicitly understood that the embodiments described herein can be combined with other embodiments.

[0033] The present application refers to a protective structure of an oil-immersed transformer, comprising:

[0034] The body 100 and the transverse buffer assembly 1, the vertical buffer assembly 2 and the anti-inclination assembly 3 arranged at the bottom of the body 100, the vertical buffer assembly 2 and the anti-inclination assembly 3 being arranged at both ends of the transverse buffer assembly 1 side by side;

[0035] The transverse buffer assembly 1 comprises a connecting rod 11 and a transverse mounting 12, the transverse mounting 12 having a mounting groove 121, a transverse buffer 13 being arranged in the mounting groove 121, the transverse buffer 13 having a pushing piece 14 fixedly connected at both ends, the pushing piece 14 being slidable in the mounting groove 121, and the connecting rod 11 being rotatably connected with the body 100 and the pushing piece 14.

[0036] One end of the vertical buffer assembly 2 is fixedly connected with the body 100, and the other end is slidably abutted with the end of the transverse buffer assembly 1, when the body 100 vibrates, the pushing piece 14 of the transverse buffer assembly 1 pushes the vertical buffer assembly 2 to move upward, thereby limiting the vibration amplitude of the body 100;

[0037] One end of the anti-inclination assembly 3 is rotatably connected with the body 100, and the other end is lockingly connected with the end of the transverse buffer assembly 1, when the body 100 inclines, the pushing piece 14 of the transverse buffer assembly 1 is unlocked from the locking of the anti-inclination assembly 3, and the anti-inclination assembly 3 and the vertical buffer assembly 2 form an included angle to limit the body 100 from toppling over.

[0038] In the present embodiment, with reference to Figure 1When the oil-immersed transformer body 100 vibrates during operation or under external force, the two ends of the lateral buffering assembly 1 will slide away from the transformer body 100 under the action of the downward movement of the transformer body 100, and the vertical buffering assembly 2 will move upward under the pushing action of the lateral buffering assembly 1, thereby hindering the downward movement of the transformer body 100 and reducing the vibration amplitude of the transformer body 100, and reducing the damage to the internal structure of the transformer body caused by vibration. In addition, the transformer body 100 may tilt or fall when subjected to external force. Therefore, an anti-tilting assembly 3 is arranged at the bottom of the transformer body 100. The anti-tilting assembly 3 is located on one side of the vertical buffering assembly 2 and is provided with a spring 34 between the vertical buffering assembly 2. One end of the anti-tilting assembly 3 is locked with the lateral buffering assembly 1, and the other end is hinged with the bottom of the transformer body 100. When the transformer body 100 tilts, the two ends of the lateral buffering assembly 1 push the anti-tilting assembly 3 with different forces due to the shift of the center of gravity of the transformer body 100. The end with a larger pushing force will push the anti-tilting assembly 3, thereby releasing the locking connection between the lateral buffering assembly 1 and the anti-tilting assembly 3. Under the action of the spring 34, the anti-tilting assembly 3 rotates and forms an angle with the vertical buffering assembly 2, thereby providing support for the tilted transformer body 100 and hindering the tilting of the transformer body 100.

[0039] In the present embodiment, the two connecting rods 11 will rotate simultaneously when the transformer body 100 moves downward, thereby driving the two pushing pieces 14 respectively hinged with the two connecting rods 11 to slide in opposite directions in the mounting groove 121. The two pushing pieces 14 stretch the lateral buffering piece 13 away from each other, and the elastic force of the lateral buffering piece 13 will hinder the sliding of the pushing piece 14, thereby hindering the rotation angle of the connecting rod 11, so as to reduce the vibration amplitude of the transformer body 100.

[0040] Further, the pushing piece 14 comprises a sliding part 141, a first pushing part 142 and a second pushing part 143. One end of the sliding part 141 is provided with the first pushing part 142 and the second pushing part 143. The first pushing part 142 is in sliding abutment with the vertical buffering assembly 2, and the second pushing part 143 is in abutment with the anti-tilting assembly 3. The other end of the sliding part 141 is fixedly connected with the lateral buffering piece 13 and rotatably connected with the connecting rod 11.

[0041] In the embodiment, the bottom of the sliding part 141 is in contact with the bottom of the mounting groove 121 and slides along the mounting groove 121 under the pushing of the connecting rod 11. In order to hinder the sliding of the pushing piece 14 and weaken the vibration of the body 100, the sliding part 141 buffers the vibration of the body 100 by the elastic force of the transverse buffer 13. It should be noted that the stiffness of the transverse buffer 13 cannot be too large. If the stiffness of the transverse buffer 13 is too large, the transverse buffer 13 will resonate with the body 100, resulting in amplification of the amplitude and intensification of the vibration. If the stiffness of the transverse buffer 13 is too small, the transverse buffer 13 cannot play a buffering role. Therefore, the transverse buffer 13 needs to be selected as a spring with appropriate stiffness, which can not only absorb part of the vibration force but also drive the pushing piece 14 to push the vertical buffer assembly 2 to hinder the vibration of the body 100 and further reduce the vibration amplitude.

[0042] Referring to Figure 2 In order to smoothly push the vertical buffer assembly 2 by the pushing piece 14, the top of the first pushing part 142 is a slope, and the bottom of the vertical buffer assembly 2 is matched with the slope of the first pushing part 142. When the pushing piece 14 slides, the bottom of the vertical buffer assembly 2 can slide upward with the slope of the first pushing part 142 to hinder the downward movement of the body 100. Further, the first pushing part 142 has a second pushing part 143 below. When the pushing piece 14 slides a large distance due to the inclination of the body 100, the end of the second pushing part 143 will push the locking assembly 31 on the anti-inclination assembly 3, so that the locking assembly 31 is retracted into the anti-inclination assembly 3, and the unlocking of the transverse buffer assembly 1 and the anti-inclination assembly 3 is completed.

[0043] It should be noted that the length of the second pushing part 143 is not greater than the length of the first pushing part 142. The end of the transverse mounting piece 12 is provided with a containing groove (not shown) for containing the first pushing part 142. When the transformer body 100 is inclined, the first pushing part 142 will enter the containing groove. At this time, the second pushing part 143 can smoothly push the locking assembly 31 to achieve the unlocking of the anti-inclination assembly 3.

[0044] Further, the vertical buffer assembly 2 comprises a first buffer 21, a second buffer 22 and a buffer spring 23. The top of the first buffer 21 is provided with a first buffer cavity 24. The buffer spring 23 and the second buffer 22 are arranged in the first buffer cavity 24. The second buffer 22 slides in the first buffer cavity 24. The bottom of the first buffer 21 is in sliding abutment with the first pushing part 142.

[0045] In the embodiment, referring to Figure 3The bottom of the first buffer 21 is inclined, and the pushing member 14 pushes the first buffer 21 to move upward, and the first buffer 21 drives the second buffer 22 installed in the first buffer cavity 24 to move upward together, thereby preventing the downward movement of the body 100 and reducing the vibration amplitude of the body 100; however, the first buffer 21 and the second buffer 22 are made of materials with large rigidity, which are easy to be coupled with the vibration frequency of the body 100, so that the buffer spring 23 is arranged in the first buffer cavity 24, the resonance between the first buffer 21, the second buffer 22 and the body 100 is avoided by using the elastic force of the buffer spring 23, so that the vibration energy is effectively absorbed and dissipated, and the body 100 is prevented from being damaged by additional vibration.

[0046] Further, the second buffer 22 has a second buffer cavity 25, and a piston 26 and a piston rod 27 are arranged in the second buffer cavity 25, one end of the piston rod 27 is fixedly connected with the body 100, and the other end is fixedly connected with the piston 26.

[0047] The piston 26 is provided with a limiting piece 261 and a one-way adjusting piece 262, the one-way adjusting piece 262 and the limiting piece 261 are fixedly installed on the inner wall of the piston 26, and the limiting piece 261 is oppositely arranged on the upper and lower sides of the one-way adjusting piece 262, and is used for preventing the one-way adjusting piece 262 from being opened in the reverse direction.

[0048] In the embodiment, the piston 26 is provided with the limiting pieces 261 which are staggered upward and downward, so that the one-way adjusting piece 262 forms a one-way channel between the upper and lower chambers of the piston 26, and defines the effective swing direction of the movable plate 264 in the one-way adjusting piece 262: when the piston 26 moves downward, the fluid can only push away the one-way adjusting piece 262 in the designed direction; when the piston 26 moves upward, the fluid is forced to be guided to the channel in the direction opposite to the fluid channel direction when the piston 26 moves downward. Through the directional control structure, it is ensured that no matter which direction the piston 26 is impacted, the fluid flow direction in the piston 26 is always constrained and adjusted, so that stable and predictable asymmetric buffering performance is realized.

[0049] Further, the one-way adjusting piece 262 includes a mounting shaft 263 and a movable plate 264, the one-way adjusting piece 262 includes the mounting shaft 263 and the movable plate 264, and the movable plate 264 is rotatably installed on both sides of the mounting shaft 263.

[0050] In this embodiment, the movable plate 264 includes two movable plates 264, which are symmetrically installed on both sides of the mounting shaft 263. When the main body 100 moves downward due to vibration, the piston rod 26 drives the piston 26 to move downward in the second buffer chamber 25. The fluid below the piston 26 is pushed open by the squeezing action of the piston 26 and enters the cavity above the piston 26. The first movable plate 264 is closed due to the blocking action of the limiting member 261. When the main body 100 moves upward, the piston 26 moves upward under the action of the piston rod 26. The fluid in the cavity above the piston 26 pushes open the first movable plate 264 and enters the cavity below the piston 26. The first movable plate 264 is closed due to the blocking action of the limiting member 261. Therefore, regardless of whether the body 100 moves upward or downward, the fluid will always be restricted by the movable plate 264 on either side when passing through the piston 26, which significantly increases the flow resistance of the fluid in one direction. This effectively dissipates the vibration kinetic energy, suppresses the reciprocating motion amplitude of the body 100, improves the buffering efficiency and stability, effectively avoids the body 100 from generating continuous oscillations after the impact stops, and ensures that the equipment quickly returns to a stable state.

[0051] Furthermore, the anti-tilt component 3 includes a locking component 31 and a support component 32. The support component 32 has a locking hole 33, and the locking component 31 is installed in the locking hole 33. The end of the transverse mounting member 12 has a through hole 122, and one end of the locking component 31 passes through the through hole 122 and locks with the transverse mounting plate 12.

[0052] In this embodiment, see Figure 4 One end of the anti-tilt component 3 is hinged to the bottom of the body 100. When the body 100 is tilted by an external force, the connecting rod 11 is subjected to uneven force due to the offset of the center of the body 100. This causes the sliding distance of the pusher 14 in the mounting groove 121 to be different. The second pusher 143 on the pusher 14 with the larger sliding distance will push the locking component 31 through the through hole 122 and retract into the locking hole 33. During this process, as the locking component 31 of the anti-tilt component 3 is pushed out into the transverse buffer component 1, the spring 34 between the anti-tilt component 3 and the vertical buffer component 2 will provide a thrust to the anti-tilt component 3, causing the support component 32 to rotate and form an angle with the bottom of the body 100, thereby stabilizing and supporting the body 100.

[0053] Further, the support assembly 32 comprises a first support 321, a second support 322, a support spring 323 and a support wheel 324, one end of the first support 321 is rotationally connected with the bottom of the body 100, the other end is provided with a sliding cavity 325, the support spring 323 and one end of the second support 322 are installed in the sliding cavity 325, the second support 322 can slide in the sliding cavity 325, the other end of the second support 322 is installed with the support wheel 324.

[0054] In the embodiment, the side wall of the first support 321 is provided with an opening corresponding to the locking hole 33 of the second support 322, the locking assembly 31 is installed in the locking hole 33, the locking assembly 31 extends out of the locking hole 33 and passes through the opening on the side wall of the first support 321, and then passes through the through hole 122 of the end of the transverse mounting member 12, so that the locking assembly 31 is locked and connected with the transverse buffer assembly 1, and meanwhile, the locking assembly 31 also limits the sliding of the second support 322 in the sliding cavity 325. When the second pushing part 143 of the pushing member 14 pushes the locking assembly 31 to be completely retracted into the locking hole 33 of the second support 322, the first support 321 is not blocked by the locking assembly 31 between the first support 321 and the second support 322, and the second support 322 can be popped out of the first support 321 under the elastic force of the support spring 323, and the pop-out amount of the second support 322 is the distance between the support wheel 324 and the ground. The support wheel 324 ensures that the support assembly 32 is not hindered by the ground during rotation.

[0055] Further, the locking assembly 31 comprises a locking shaft 311, spring balls 312 and a reset spring 313, the spring balls 312 are installed in the locking shaft 311, one end of the locking shaft 311 is in abutment with the second pushing part 143, and the other end of the locking shaft 311 and one end of the reset spring 313 are installed in the locking hole 33.

[0056] In the embodiment, when the second pushing part 143 on the pushing member 14 pushes the locking assembly 31, the locking shaft 311 compresses the reset spring 313, and the spring balls 312 slide into the grooves (not shown) on the inner wall of the locking hole 33, so as to prevent the locking assembly 31 from being popped out of the locking hole 33; when the anti-inclination assembly 3 is not needed, the spring balls 312 are separated from the grooves by pressing the locking assembly 31 in the locking hole 33 by using a tool, and then the reset spring 313 makes the locking shaft 311 pop out of the locking hole 33, and then pushes the anti-inclination assembly 3 to rotate to the end of the transverse buffer assembly 1, at this time, the locking assembly 31 is aligned with the through hole 122 of the end of the transverse mounting member 12, and the anti-inclination assembly 3 is continuously pushed to make the locking assembly 31 be clamped into the through hole 122, and the locking of the anti-inclination assembly 3 and the transverse buffer assembly 1 is completed.

[0057] Further, the protection structure further comprises a protection assembly 200 arranged on the air side of the body 100, the protection assembly 200 comprises a buffer air bag 201 and a protection air bag 202, the buffer air bag 201 and the protection air bag 202 are communicated, the protection air bag 201 is inflated when subjected to external force, and the buffer air bag 201 is provided with a protection spring 205.

[0058] In the embodiment, when the body 100 is subjected to external impact, the fins on the side wall of the body 100 are easily broken and oil is leaked after being hit, which causes hidden danger of transformer operation safety, therefore, the protection assembly 200 is arranged on the air side of the fins, the protection assembly 200 is in cross shape, one protection assembly 200 can protect a group of fins, the transverse ends of a plurality of protection assemblies 200 can be connected by bolts to form a whole to protect a plurality of groups of fins, the vertical ends of the protection assembly 200 are installed on the oil supply pipes of the fins, and the transverse ends of the protection assembly 200 are connected with the side wall of the body 100 by means of the pulling force of the screw rod to increase the stability of the fin installation.

[0059] Referring to Figure 1 and Figure 5 , the protection assembly 200 comprises the buffer air bag 201, the protection air bag 202, a first protection plate 203 and a second protection plate 204, the first protection plate 203 is installed on the periphery of the fin, the first protection plate 203 is arranged opposite to the second protection plate 204, the buffer air bag 201 and the protection air bag 202 are arranged between the first protection plate 203 and the second protection plate 204, and the buffer air bag 201 is provided with the protection spring 205. The buffer air bag 201 is installed around the first protection plate 203, the protection air bag 202 is installed at the center of the first protection plate 203, the buffer air bag 201 and the protection air bag 202 are communicated by means of the valve 206. When the protection assembly 200 is subjected to small external force, the buffer air bag 201 and the protection spring 205 can offset the external force; if the external force is too large, part of the gas in the buffer air bag 201 can enter the protection air bag 202 through the valve 206, the protection air bag 202 is inflated and bears the external force together with the buffer air bag 205, and the gas can buffer and absorb the external impact force when passing through the valve 206, thereby preventing local damage of the fin caused by great impact.

[0060] The above has described the embodiments of the present application in detail, the principle and implementation mode of the present application have been described by applying specific examples, the above embodiment description is only used to help understand the method of the present application and its core idea; meanwhile, according to the idea of the present application, the specific implementation mode and application range can be changed by the person skilled in the art, and the above description should not be understood as the limitation of the present application.

Claims

1. A protective structure for an oil-immersed transformer, characterized in that, include: The body (100) and the horizontal buffer assembly (1), the vertical buffer assembly (2) and the anti-tilt assembly (3) disposed at the bottom of the body (100), wherein the vertical buffer assembly (2) and the anti-tilt assembly (3) are disposed side by side at both ends of the horizontal buffer assembly (1); The lateral buffer assembly (1) includes: a connecting rod (11) and a lateral mounting member (12). The lateral mounting member (12) has a mounting groove (121). A lateral buffer member (13) is installed in the mounting groove (121). Pushing members (14) are fixedly connected to both ends of the lateral buffer member (13). The pushing members (14) can slide in the mounting groove (121). The connecting rod (11) is rotatably connected to the body (100) and the pushing members (14). One end of the vertical buffer component (2) is fixedly connected to the body (100), and the other end slides against the pusher (14) of the horizontal buffer component (1). When the body (100) vibrates, the pusher (14) of the horizontal buffer component (1) pushes the vertical buffer component (2) to move upward, limiting the vibration amplitude of the body (100). One end of the anti-tilt component (3) is rotatably connected to the body (100), and the other end is locked to the end of the lateral buffer component (1). When the body (100) tilts, the pusher (14) of the lateral buffer component (1) is unlocked from the locking of the anti-tilt component (3). The anti-tilt component (3) and the vertical buffer component (2) form an angle to limit the tilting of the body (100).

2. The protective structure for an oil-immersed transformer according to claim 1, characterized in that, The pusher (14) includes a sliding part (141). One end of the sliding part (141) is equipped with a first pusher (142) and a second pusher (143). The first pusher (142) slides against the vertical buffer assembly (2), and the second pusher (143) abuts against the anti-tilt assembly (3). The other end of the sliding part (141) is fixedly connected to the horizontal buffer (13) and rotatably connected to the connecting rod (11).

3. The protective structure for an oil-immersed transformer according to claim 2, characterized in that, The vertical buffer assembly (2) includes a first buffer (21), a second buffer (22) and a buffer spring (23). The top of the first buffer (21) is provided with a first buffer cavity (24). The buffer spring (23) and the second buffer (22) are placed in the first buffer cavity (24). The second buffer (22) slides in the first buffer cavity (24). The bottom of the first buffer (21) slides against the first pushing part (142).

4. The protective structure for an oil-immersed transformer according to claim 3, characterized in that, The second buffer (22) has a second buffer cavity (25), in which a piston (26) and a piston rod (27) are provided. One end of the piston rod (27) is fixedly connected to the bottom of the body (100), and the other end is fixedly connected to the piston (26). The piston (26) is provided with a limiting member (261) and a one-way adjusting member (262). The one-way adjusting member (262) and the limiting member (261) are fixedly installed on the inner wall of the piston (26). The limiting member (261) is arranged opposite to the upper and lower sides of the one-way adjusting member (262) to prevent the one-way adjusting member (262) from opening in the reverse direction.

5. The protective structure for an oil-immersed transformer according to claim 4, characterized in that, The one-way adjusting member (262) includes a mounting shaft (263) and a movable plate (264), the movable plate (264) being rotatably mounted on both sides of the mounting shaft (263).

6. The protective structure for an oil-immersed transformer according to claim 5, characterized in that, The anti-tilt component (3) includes a locking component (31) and a support component (32). The support component (32) has a locking hole (33). The locking component (31) is installed in the locking hole (33). The end of the transverse mounting member (12) has a through hole (122). One end of the locking component (31) passes through the through hole (122) and abuts against the pusher (14).

7. The protective structure for an oil-immersed transformer according to claim 6, characterized in that, The support assembly (32) includes a first support member (321), a second support member (322), a support spring (323), and a support wheel (324). One end of the first support member (321) is rotatably connected to the lower surface of the body (100), and the other end is provided with a sliding cavity (325). One end of the support spring (323) and the second support member (322) are installed in the sliding cavity (325). The second support member (322) can slide in the sliding cavity (325). The other end of the second support member (322) is provided with a support wheel (324).

8. The protective structure for an oil-immersed transformer according to claim 7, characterized in that, The locking assembly (31) includes a locking shaft (311), a spring ball (312), and a return spring (313). The spring ball (312) is installed inside the locking shaft (311). One end of the locking shaft (311) abuts against the second push part (143), and the other end of the locking shaft (311) and one end of the return spring (313) are installed inside the locking hole (33).

9. A protective structure for an oil-immersed transformer according to any one of claims 1-8, characterized in that, The protective structure also includes a protective component (200), which is disposed on the air side of the main body (100). The protective component (200) includes a buffer airbag (201) and a protective airbag (202). The buffer airbag (201) and the protective airbag (202) are connected. When the buffer airbag (201) is subjected to external force, it will inflate the protective airbag (202). A protective spring (205) is provided inside the buffer airbag (201).

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