An active constrained damping device applied to the outer wall of an oil-immersed transformer

Abstract

The present invention discloses an active constrained damping device applied to the outer wall of an oil-immersed transformer, which includes a damping layer fixed on the outer wall of the oil-immersed transformer, a constraint layer arranged outside the damping layer, a pair of fixed seats fixed on the outer wall of the oil-immersed transformer, an activity groove is provided in the fixed seat, the activity groove includes a longitudinal part and a transverse part, the left and right ends of the activity plate are respectively inserted into the transverse parts of the activity grooves of the left and right fixed seats in an activity manner and can move along the activity groove; it also includes a flattening and compaction component for flattening and compacting the constraint layer when the activity plate moves and a push block arranged in the longitudinal part of the activity groove, the push block is provided with an inclined surface that acts on the end of the activity plate to push the activity block to move; a support spring is used to elastically support the push block. When the transformer box body vibrates during operation, the present invention can avoid the deformation of the constraint layer and the phenomenon of voids between the constraint layer and the damping layer, ensuring the normal operation of the constrained damping structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of power distribution and transformation equipment, and particularly relates to a constrained damping device applied to an oil-immersed transformer. Background Art

[0002] For an oil-immersed transformer, its coils and magnetic core are immersed in special transformer oil. This has the advantages that it can not only dissipate heat but also isolate the coils from air to prevent moisture in the air from corroding the magnetic core of the transformer. At the same time, it can also play a certain arc extinguishing role. The main components of an oil-immersed transformer include an iron core, windings, an oil tank, protection devices, voltage regulating devices, etc.

[0003] During the operation of an oil-immersed transformer, the iron core will vibrate, causing the box body to vibrate accordingly, and then radiating to the surrounding environment through the box body. The vibrations of the iron core and the box body will also generate noise, causing noise pollution to the working environment. To control the noise pollution, constrained damping devices are generally provided on the box body of the transformer. However, due to the vibration of the box body, these constrained damping devices often show the phenomenon of becoming disengaged and loose, and thus cannot function properly.

[0004] Therefore, in view of the existing structure and deficiencies, research and improvement are carried out to provide an active constrained damping structural unit device applied to the outer wall of an oil-immersed transformer box body, with the expectation of achieving a more practical value. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an active constrained damping device applied to the outer wall of an oil-immersed transformer box body to avoid the constrained damping device from becoming disengaged and loose.

[0006] To solve the above technical problem, the present invention adopts the following technical solution: An active constrained damping device applied to the outer wall of an oil-immersed transformer box body, comprising:

[0007] A damping layer, which is fixed on the outer wall of the oil-immersed transformer box body;

[0008] A constraint layer, which is arranged outside the damping layer to form a constraint on the damping layer;

[0009] Fixed seats, which are arranged in pairs and fixed on the outer wall of the oil-immersed transformer box body and are located on the left and right sides of the damping layer and the constraint layer. An activity slot is provided in the fixed seat, and the activity slot includes a longitudinal part and a transverse part. The transverse part communicates with the longitudinal part and the side of the fixed seat where the activity plate is connected;

[0010] An activity plate, the left and right ends of which are respectively inserted into the transverse parts of the activity slots of the left and right fixed seats and can move along the activity slots;

[0011] Flattening assembly, which is installed on the side of the movable plate close to the constraint layer, and flattens and compresses the constraint layer when the movable plate moves.

[0012] Push block, which is arranged in the longitudinal part of the movable groove and can move longitudinally. The push block is provided with an inclined surface that acts on the end of the movable plate to push the movable block to move.

[0013] Support spring, which is used to elastically support the push block and make the push block slide longitudinally when the transformer box vibrates during operation.

[0014] Preferably, it further includes a pushing assembly, which includes a support plate and a compression spring. The support plate is fixedly installed between two fixed seats. One end of the compression spring is fixed to the movable plate, and the other end is fixed to the support plate.

[0015] Preferably, at least a pair of compression springs are symmetrically distributed on the front and back sides of the movable plate.

[0016] Preferably, the damping layer includes a damping adhesive layer and an elastic damping layer arranged in a stacked manner.

[0017] Preferably, the damping adhesive layer and the elastic damping layer are fixedly connected by a damping adhesive.

[0018] Preferably, the constraint layer includes a rectangular shell and support ribs supported inside the shell.

[0019] Preferably, the support ribs extend in a continuous broken line along the left-right direction.

[0020] Preferably, the flattening assembly includes pressing wheels, and a plurality of pressing wheels are rotatably installed on the side of the movable plate close to the constraint layer and can roll on the outer surface of the constraint layer along the left-right direction.

[0021] Preferably, the flattening assembly further includes friction pads, and the friction pads are arranged around the outer circumference of the pressing wheels.

[0022] The technical solution adopted by the present invention has the following beneficial effects:

[0023] 1. When the transformer box vibrates during operation, the push block slides up and down with the vibration of the box under the action of the support spring. When the push block moves upward, it will squeeze the movable plate to move through the inclined surface. The movable plate drives the compression spring to change direction, and there will be an impact force after the compression spring changes direction. The movable plate moves quickly under the action of this impact force, and at the same time drives the flattening assembly to flatten and compress the constraint layer, avoiding the deformation of the constraint layer and the phenomenon of voids between the constraint layer and the damping layer, and ensuring the normal operation of the constrained damping structure.

[0024] 2. By driving the components to generate impact force, it can ensure that the movable plate can smoothly move to the limit of its moving range, avoiding the situation that the movable plate only moves within a small range, and thus ensuring the full flattening of the movable plate on the constraint layer.

[0025] 3. By setting the push block and the support spring, using the vibration generated by the transformer box itself during operation as the driving source, to achieve the flattening and compaction of the constrained damping structure, and automatically work without additional detection devices, etc. The structure is simple and easy to use.

[0026] 4. The damping layer is composed of a damping adhesive layer and an elastic damping layer stacked together, making the damping layer have its own viscosity and elasticity.

[0027] 5. Support ribs are arranged in the constraint layer, increasing the stiffness of the constraint layer and reducing the local deformation of the constraint layer.

[0028] The specific technical solutions and their beneficial effects of the present invention will be described in detail in the following specific embodiments in combination with the drawings. Brief Description of the Drawings

[0029] The present invention will be further described below in combination with the drawings and specific embodiments:

[0030] Figure 1 is the front sectional view of the present invention;

[0031] Figure 2 is the top view schematic diagram of the connection structure between the fixed seat, the movable plate and the driving component of the present invention;

[0032] Figure 3 is the front sectional view of the internal structure of the fixed seat of the present invention;

[0033] Figure 4 is the three-dimensional view of the fixed seat structure of the present invention;

[0034] Figure 5 is the schematic diagram of the internal structure of the constraint layer of the present invention;

[0035] Figure 6 is the top view schematic diagram after the compression spring is reversed of the present invention.

[0036] In the figure: 1. Box body; 2. Damping layer; 3. Constraint layer; 31. Support rib; 4. Fixed seat; 5. Movable plate; 6. Flattening component; 61. Pressing wheel; 62. Friction pad; 7. Push block; 8. Support spring; 9. Driving component; 91. Support plate; 92. Compression spring. Specific Embodiments

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0038] The terms used in the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. For example, the terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", "front", "rear", etc. are only based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0039] Those skilled in the art can understand that, without conflict, the features in the following embodiments and implementation manners can be combined with each other.

[0040] Referring to Figures 1 to 5 As shown, the present invention provides an active constrained damping device applied to the outer wall of an oil-immersed transformer, which is installed on the outer wall of the oil-immersed transformer box body 1 and includes:

[0041] A damping layer 2, which is fixed on the outer wall of the oil-immersed transformer.

[0042] A constraint layer 3, which is arranged outside the damping layer and forms a constraint on the damping layer.

[0043] Fixed seats 4, which are arranged in pairs and fixed on the outer wall of the oil-immersed transformer and are located on the left and right sides of the damping layer 2 and the constraint layer 3. The fixed seats 4 are provided with movable grooves, and the movable grooves include a longitudinal part and a transverse part. The transverse part communicates with the longitudinal part and the side where the fixed seat is connected to the movable plate.

[0044] A movable plate 5, the left and right ends of which are respectively inserted into the transverse parts of the movable grooves of the left and right fixed seats 4 and can move along the movable grooves.

[0045] A flattening assembly 6, which is installed on the side of the movable plate 5 close to the constraint layer 3 and flattens and compacts the constraint layer 3 when the movable plate 5 moves.

[0046] The pushing block 7 is arranged in the longitudinal part of the movable groove and can move longitudinally. The pushing block 7 is provided with an inclined surface that acts on the end of the movable plate 5 to push the movable block 5 to move. When the pushing block 7 moves upward, it will squeeze the movable plate 5 to move through the inclined surface.

[0047] The supporting spring 8 is used to elastically support the pushing block 7 and enable the pushing block 7 to slide longitudinally when the box vibrates during operation.

[0048] Among them, the damping layer 2 includes a damping adhesive layer and an elastic damping layer, and the two are fixedly connected through a damping adhesive. This makes the damping layer have its own viscosity and elasticity.

[0049] Reference Figure 5 As shown, in this embodiment, the constraint layer 3 includes a rectangular housing and support ribs 31 supported inside the housing. The support ribs 31 are made of metal materials. The support ribs extend in a continuous zigzag shape in the left-right direction, and are arranged in two layers and symmetrically arranged in the up-down direction. This increases the stiffness of the constraint layer and reduces the local deformation of the constraint layer.

[0050] Reference Figure 1 As shown, the length of the movable plate 5 is greater than the distance between the inner sides of the two fixed seats 4, and at the same time less than the distance between the connecting sides of the transverse part and the longitudinal part of the two movable grooves, so that the movable plate 5 has a large activity space and avoids the situation where the movable plate only moves within a small range.

[0051] Reference Figure 4 As shown, the front and rear of the transverse part of the movable groove are both open, so that the movable plate 5 has a large activity space.

[0052] Reference Figure 3 As shown, the flattening assembly 6 includes a pressing wheel 61 and a friction pad 62. The pressing wheel 61 is rotatably installed on one side of the movable plate 5 close to the constraint layer 3, and the friction pad 62 is arranged around the outer circumference of the pressing wheel 61. When the movable plate 5 moves left and right, the constraint layer 3 is compacted and flattened through the flattening assembly 6.

[0053] Reference Figure 2 As shown in the figure, in this embodiment, the active constrained damping device can also be provided with a pushing assembly 9. The pushing assembly 9 includes a support plate 91 and at least a pair of compression springs 92. The support plate 91 is fixedly installed between the two fixed seats 4. The two ends of the compression spring 92 are respectively fixedly installed on the movable plate 5 and the support plate 91, and the two compression springs 92 are symmetrically distributed in the front and rear with respect to the movable plate 5.

[0054] Among them, the support plate 91 is a grid plate, including a plurality of longitudinal rods arranged in parallel and a plurality of transverse rods perpendicular to the longitudinal rods. The end of the compression spring 92 is connected to the transverse rod.

[0055] The specific usage method and function of this embodiment:

[0056] In the present invention, when the box body 1 vibrates during operation, the push block 7 slides up and down with the vibration of the box body 1 under the action of the support spring 8. When the push block 7 moves upward, it will squeeze the movable plate 5 to move through the inclined surface. When the vibration amplitude of the box body 1 is relatively large, the push block 7 squeezes the movable plate 5 to move a large distance, and the movable plate 5 drives the compression spring 92 to change direction. As Figure 2 shown, the compression spring 92 changes from the state in Figure 2 to the state in Figure 6 . During the commutation process of the compression spring 92, it changes from the stretched state to the compressed state and finally back to the stretched state. Therefore, there will be an impact force after the compression spring 92 is commutated. The movable plate 5 moves quickly under the action of this impact force, and at the same time drives the flattening assembly 6 to flatten and compact the constraint layer 3, avoiding the deformation of the constraint layer 3 and the phenomenon of voids between the constraint layer 3 and the damping layer 2, ensuring the normal operation of the constrained damping structure; by setting the impact force generated by the pushing assembly 9, it can be ensured that the movable plate 5 can smoothly move to the limit of its movement range, avoiding the situation where the movable plate 5 only moves within a small range, and thus ensuring the full flattening of the constraint layer 3 by the movable plate 5; by setting the push block 7 and the support spring 8, using the vibration generated by the box body 1 of the transformer itself during operation as the driving source, the flattening and compaction of the constrained damping structure are realized, and the work is carried out automatically without the need to additionally install detection devices and the like, with a simple structure and convenient use.

[0057] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the content described in the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. An active constrained damping device applied to the outer wall of an oil-immersed transformer, characterized in that, it includes: a damping layer, which is fixed on the outer wall of the oil-immersed transformer; a constraint layer, which is arranged outside the damping layer to form a constraint on the damping layer; fixed seats, a pair of fixed seats are fixed on the outer wall of the oil-immersed transformer and are located on the left and right sides of the damping layer and the constraint layer. An activity slot is provided in the fixed seat. The activity slot includes a longitudinal part and a transverse part, and the transverse part communicates with the longitudinal part and the side where the fixed seat is connected to the activity plate; an activity plate, the left and right ends of the activity plate are respectively inserted into the transverse parts of the activity slots of the left and right fixed seats and can move along the activity slots. The front and rear of the transverse part of the activity slot are both open; a flattening component, which is installed on the side of the activity plate close to the constraint layer. When the activity plate moves, it flattens and compacts the constraint layer; a push block, which is arranged in the longitudinal part of the activity slot and can move longitudinally. The push block is provided with an inclined surface that acts on the end of the activity plate to push the activity block to move; a support spring, which is used to elastically support the push block and makes the push block slide longitudinally when the transformer body vibrates during operation.

2. An active constrained damping device applied to the outer wall of an oil-immersed transformer according to claim 1, characterized in that: it further includes a pushing component, and the pushing component includes a support plate and a compression spring. The support plate is fixedly installed between the two fixed seats, one end of the compression spring is fixed to the activity plate, and the other end is fixed to the support plate.

3. An active constrained damping device applied to the outer wall of an oil-immersed transformer according to claim 2, characterized in that: at least one pair of compression springs are symmetrically distributed on the front and rear sides of the activity plate.

4. An active constrained damping device applied to the outer wall of an oil-immersed transformer according to claim 1, characterized in that: the damping layer includes a damping adhesive layer and an elastic damping layer arranged in a stacked manner.

5. An active constrained damping device applied to the outer wall of an oil-immersed transformer according to claim 1, characterized in that: the constraint layer includes a rectangular shell and support ribs supported inside the shell.

6. An active constrained damping device applied to the outer wall of an oil-immersed transformer according to claim 5, characterized in that: the support ribs extend in a continuous broken line along the left-right direction.

7. An active constrained damping device applied to the outer wall of an oil-immersed transformer according to claim 1, characterized in that: the flattening component includes pressing wheels, and a plurality of pressing wheels are rotatably installed on the side of the activity plate close to the constraint layer and can roll on the outer surface of the constraint layer along the left-right direction.

8. An active constrained damping device applied to the outer wall of an oil-immersed transformer according to claim 7, characterized in that: the flattening component further includes a friction pad, and the friction pad is arranged around the outer circumference of the pressing wheel.

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