Dry-type transformer core fixing structure with damping shock-absorbing layer
By designing a multi-layer buffer structure consisting of PEEK plates, composite damping plates, and damping shock absorbers on the core of a dry-type transformer, the problem of unstable fixation caused by core vibration was solved, achieving core stability and heat dissipation, and improving the operational reliability of the transformer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENDA ELECTRIC GROUP ZHEJIANG SPECIAL TRANSFORMER CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-29
Smart Images
Figure CN224304477U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dry-type transformer core technology, specifically to a dry-type transformer core fixing structure with a damping and shock-absorbing layer. Background Technology
[0002] A dry-type transformer is a transformer device that converts voltage levels to another. Dry-type transformers do not require oil for cooling; instead, they use insulating materials such as resin to isolate current and prevent arcing. These transformers are widely used in power distribution projects. The core of a dry-type transformer is mainly composed of silicon steel sheets, which are stacked in an alternating pattern to form the core body. It is fixed and insulated using fasteners and insulating components such as clamps, screws, and insulating tubes. However, the operation of a dry-type transformer causes core vibration, and the rubber pads used for vibration damping are prone to aging and failure, affecting the stability of the transformer core. Utility Model Content
[0003] To overcome the shortcomings of existing technologies, a dry-type transformer core fixing structure with a damping and vibration reduction layer is provided to solve the problem that the vibration of the core caused by the operation of the dry-type transformer and the easy aging and failure of the rubber pad vibration reduction method affect the stability of the transformer core fixing.
[0004] To achieve the above objectives, a dry-type transformer core fixing structure with a damping and vibration reduction layer is provided, comprising: a rear clamp and a front clamp, wherein a silicon steel sheet core body is clamped and fixed between the rear clamp and the front clamp.
[0005] PEEK clamps are symmetrically distributed on the front and rear sides of the silicon steel sheet core body. The PEEK clamps are tightly attached to the silicon steel sheet core body through insulating pads. Composite damping clamps are bonded to the side ends of the PEEK clamps. The side ends of the composite damping clamps are connected to the rear clamp and the front clamp respectively through alloy substrates. A first damping shock absorber and a second damping shock absorber are installed at the spacing of the PEEK clamps. The surface of the composite damping clamps is supported and connected to the PEEK clamps through thin vibration isolators.
[0006] Furthermore, both the rear clamp and the front clamp have two sets of fixing holes symmetrically formed on their surfaces; and fastening bolts are connected through the fixing holes.
[0007] Furthermore, the front clamp is fixed to the rear clamp by fastening bolts, and an alloy substrate is welded to the rear side of the front clamp and the front surface of the rear clamp.
[0008] Furthermore, heat dissipation pins are fixed through the contact end faces of the alloy substrate and the composite shock-absorbing clamp; and the heat dissipation pins are arranged horizontally and equidistantly on the front and rear sides of the silicon steel sheet core body.
[0009] Furthermore, an insulating pad is bonded to one side of the PEEK clamp, and the first damping shock absorber and the second damping shock absorber are distributed on the left and right sides of the silicon steel sheet core body.
[0010] Furthermore, the first damping shock absorber is connected to the surface of the rear PEEK clamp plate via a piston rod.
[0011] Furthermore, the second damping shock absorber is supported on the surface of the front PEEK clamp plate by a piston rod.
[0012] The beneficial effects of this utility model are as follows: the dry-type transformer core fixing structure with damping and shock absorption layer of this utility model utilizes an alloy substrate, a composite shock-absorbing clamp, and a PEEK clamp to form a shock-absorbing pad, so that the clamps are fixed to both sides of the core. The composite shock-absorbing clamp and the PEEK clamp absorb and buffer the vibration generated by the core. At the same time, the damping shock absorbers and thin vibration isolators supported at the spacing of the PEEK clamps further buffer the amplitude of the PEEK clamps, effectively enhancing the shock absorption effect of the dry-type transformer core fixing structure, preventing the transmission of vibration caused by internal and external vibration, and facilitating a more durable and stable fixation of the dry-type transformer core, ensuring the stable operation of the dry-type transformer core. Attached Figure Description
[0013] Figure 1 This is a top view schematic diagram of the core fixing structure of a dry-type transformer with a damping and shock absorption layer according to an embodiment of this utility model.
[0014] Figure 2 This is a top cross-sectional view of the core fixing structure of a dry-type transformer with a damping and vibration reduction layer, according to an embodiment of this utility model.
[0015] Figure 3 This is a top cross-sectional view of the damping and shock absorption layer structure according to an embodiment of the present invention.
[0016] Figure 4 This is a front view of the alloy substrate according to an embodiment of the present invention.
[0017] In the diagram: 1. Rear clamp; 11. Front clamp; 12. Fastening bolt post; 13. Fixing hole; 2. Silicon steel sheet core body; 3. PEEK clamping plate; 4. Alloy base plate; 41. Heat dissipation pin post; 5. First damping shock absorber; 51. Piston rod; 52. Second damping shock absorber; 53. Thin vibration isolator; 6. Composite damping clamping plate; 7. Insulating pad. Detailed Implementation
[0018] Reference Figures 1 to 4As shown, this utility model provides a dry-type transformer core fixing structure with a damping and vibration reduction layer, including: a rear clamp 1 and a front clamp 11, with a silicon steel sheet core body 2 clamped and fixed between the rear clamp 1 and the front clamp 11.
[0019] PEEK clamps 3 are symmetrically distributed on the front and rear sides of the silicon steel sheet core body 2. The PEEK clamps 3 are tightly attached to the silicon steel sheet core body 2 through insulating pads 7. Composite damping clamps 6 are bonded to the side ends of the PEEK clamps 3. The side ends of the composite damping clamps 6 are connected to the rear clamp 1 and the front clamp 11 respectively through alloy substrate 4. A first damping shock absorber 5 and a second damping shock absorber 52 are installed at the spacing of the PEEK clamps 3. The surface of the composite damping clamps 6 is supported and connected to the PEEK clamps 3 through thin vibration isolators 53.
[0020] The rear clamp 1 and the front clamp 11 form a shock-absorbing pad layer on their sides, consisting of an alloy substrate 4, a composite shock-absorbing clamp 6, and a PEEK clamp 3. This pad layer is clamped and attached to the upper and lower ends of the silicon steel sheet core body 2. The rear clamp 1 and the front clamp 11 are then fixedly connected using fastening bolts 12. Finally, the clamp at the upper end of the silicon steel sheet core body 2 is fixed to the winding of the dry-type transformer, and the clamp at the lower end of the silicon steel sheet core body 2 is fixed to the transformer base. This completes the installation and fixing of the silicon steel sheet core body 2. The composite shock-absorbing clamp 6 and the PEEK clamp 3 absorb and buffer the vibration generated by the core. At the same time, the damping shock absorbers and thin vibration isolators 53 supported at the spacing of the PEEK clamp 3 further buffer the amplitude of the PEEK clamp 3, effectively enhancing the shock absorption effect of the dry-type transformer core fixing structure, preventing the transmission of vibration caused by internal and external vibrations, and facilitating a more durable and stable fixing of the dry-type transformer core, thus ensuring the stable operation of the dry-type transformer core.
[0021] In this embodiment, two sets of fixing holes 13 are symmetrically provided on the surfaces of the rear clamp 1 and the front clamp 11; and fastening bolts 12 are connected through the fixing holes 13. The front clamp 11 is fixed to the rear clamp 1 by the fastening bolts 12, and an alloy substrate 4 is welded to the rear side of the front clamp 11 and the front surface of the rear clamp 1.
[0022] In a preferred embodiment, the rear clamp 1 and the front clamp 11 serve as clamping and fixing structures for the silicon steel sheet core body 2, respectively fixing the upper and lower ends of the silicon steel sheet core body 2. The alloy substrate 4 facilitates the connection between the clamps, the composite damping clamp 6, and the PEEK clamp 3, allowing the composite damping clamp 6 and the PEEK clamp 3 to clamp and support the silicon steel sheet core body 2 and the clamps, thereby buffering vibrations generated by the silicon steel sheet core body 2 or the outer end of the clamps.
[0023] In this embodiment, heat dissipation pins 41 are fixed through the contact end faces of the alloy substrate 4 and the composite shock-absorbing clamp 6; and the heat dissipation pins 41 are arranged horizontally and equidistantly on the front and rear sides of the silicon steel sheet core body 2.
[0024] As a preferred implementation, the composite damping clamp 6 is made of a renewable lightweight damping composite material. This material is lightweight, renewable, environmentally friendly, and has excellent damping and vibration reduction performance. It is mainly made from renewable resources such as plant fibers and agricultural waste. Through special processing techniques, the material is endowed with good damping and vibration reduction properties, and also has good corrosion resistance and fatigue resistance, maintaining stable performance in complex and variable environments. The heat dissipation pins 41 serve a heat dissipation function. Through the heat transfer properties of the composite damping clamp 6 and the PEEK clamp 3, the heat of the silicon steel sheet core body 2 at the clamping end is transferred and dissipated outwards, preventing heat accumulation at the clamping and fixing end of the silicon steel sheet core body 2 from affecting the normal operation of the core.
[0025] In this embodiment, an insulating pad 7 is bonded to one side of the PEEK clamp plate 3, and the first damping shock absorber 5 and the second damping shock absorber 52 are distributed on the left and right sides of the silicon steel sheet core body 2. The first damping shock absorber 5 is connected to the surface of the rear PEEK clamp plate 3 through a piston rod 51. The second damping shock absorber 52 is supported on the surface of the front PEEK clamp plate 3 through a piston rod 51.
[0026] As a preferred implementation, the insulating pad 7 serves as insulation, facilitating the clamping of the PEEK clamp 3 onto the front and rear sides of the silicon steel core body 2. The first damping shock absorber 5, the second damping shock absorber 52, and the thin vibration isolator 53 serve as damping and shock-absorbing support structures for the PEEK clamp 3, further buffering and supporting the PEEK clamp 3, preventing the transmission of vibrations caused by internal and external vibrations, and ensuring a more durable and stable fixing structure for the silicon steel core body 2.
[0027] This utility model's dry-type transformer core fixing structure with damping and vibration reduction layer can effectively solve the problem of core vibration caused by dry-type transformer operation and the easy aging and failure of rubber pad vibration reduction, which affects the stability of transformer core fixing. It effectively enhances the vibration damping effect of the dry-type transformer core fixing structure, prevents the transmission of vibration caused by internal and external vibration, and facilitates a more durable and stable fixing of the dry-type transformer core, ensuring the stable operation of the dry-type transformer core. It is applicable to dry-type transformer core fixing structures with damping and vibration reduction layers.
Claims
1. A core fixing structure for a dry-type transformer with a damping and vibration reduction layer, comprising: The rear clamp (1) and the front clamp (11) clamp and fix the silicon steel sheet core body (2) between the rear clamp (1) and the front clamp (11), characterized in that: The silicon steel sheet core body (2) has PEEK clamps (3) symmetrically distributed on its front and rear sides. The PEEK clamps (3) are tightly attached to the silicon steel sheet core body (2) through insulating pads (7). A composite damping clamp (6) is bonded to the side of the PEEK clamp (3). The side of the composite damping clamp (6) is connected to the rear clamp (1) and the front clamp (11) respectively through an alloy substrate (4). A first damping shock absorber (5) and a second damping shock absorber (52) are installed at the spacing of the PEEK clamps (3). The surface of the composite damping clamp (6) is supported and connected to the PEEK clamps (3) through thin vibration isolators (53).
2. The core fixing structure of a dry-type transformer with a damping and vibration reduction layer according to claim 1, characterized in that, The rear clamp (1) and the front clamp (11) are symmetrically provided with two sets of fixing holes (13); and fastening bolts (12) are connected through the fixing holes (13).
3. The core fixing structure of a dry-type transformer with a damping and vibration reduction layer according to claim 2, characterized in that, The front clamp (11) is fixed to the rear clamp (1) by fastening bolts (12), and an alloy substrate (4) is welded to the rear side of the front clamp (11) and the front surface of the rear clamp (1).
4. The core fixing structure of a dry-type transformer with a damping and vibration reduction layer according to claim 1, characterized in that, The alloy substrate (4) and the composite shock-absorbing clamp (6) have heat dissipation pins (41) fixed through the contact end face; and the heat dissipation pins (41) are arranged horizontally and equally at the front and rear sides of the silicon steel sheet core body (2).
5. The core fixing structure of a dry-type transformer with a damping and vibration reduction layer according to claim 1, characterized in that, An insulating pad (7) is bonded to one side of the PEEK clamp (3), and the first damping shock absorber (5) and the second damping shock absorber (52) are located on the left and right sides of the silicon steel sheet core body (2).
6. The core fixing structure of a dry-type transformer with a damping and vibration reduction layer according to claim 5, characterized in that, The first damping shock absorber (5) is connected to the surface of the rear PEEK clamp (3) via the piston rod (51).
7. The core fixing structure of a dry-type transformer with a damping and vibration reduction layer according to claim 5, characterized in that, The second damping shock absorber (52) is supported on the surface of the front PEEK clamp (3) by the piston rod (51).