A glass fiber insulation skeleton

Abstract

This invention relates to the field of coil bobbin technology, specifically a glass fiber insulating bobbin, comprising a bobbin body for winding coils. The bobbin body is made of glass fiber, radiation-resistant modified resin, and high-viscosity, high-temperature resistant adhesive. The surface of the bobbin body is provided with spiral grooves. Through the design of the temperature-controlled drive component, extrusion structure, and fixing structure, the clamping force of the coils can be automatically adjusted according to the temperature changes inside the transformer. At high temperatures, the thermal expansion fluid drives the extrusion structure to enhance the clamping force, cope with the viscosity decay of the adhesive layer and the thermal expansion gap of the components, and avoid the coils from loosening, misalignment, and collision. After the temperature recovers, it automatically resets to the initial clamping state, ensuring both the reliability of the fixation and preventing damage to the coil insulation layer due to continuous high voltage. This solves the technical problem of weakened vibration resistance and fixation capability of existing insulating bobbins at high temperatures, ensuring long-term stable operation of the equipment.

Description

Technical Field

[0001] This invention relates to the field of coil frame technology, and more specifically to a glass fiber insulating frame. Background Technology

[0002] Coils are the core components of power equipment such as transformers, reactors, and inductors that realize the conversion and transmission of electrical energy. The insulating frame, as the special winding base of the coil, directly determines the installation stability of the coil and the operational reliability of the equipment. The coil needs to be tightly wound on the groove or surface of the insulating frame to form a regular winding structure. At the same time, it relies on the frame to achieve insulation isolation and structural support.

[0003] In actual operation scenarios of transformers and other equipment, the abnormal temperature rise during normal operation, overload, or faults can cause the internal temperature to rise to 90-140℃. High temperatures can significantly weaken the insulation skeleton's ability to buffer and fix vibrations. At the same time, the difference in thermal expansion coefficients of different components can cause the structural fit gaps to increase, further amplifying the vibration amplitude and making the coil more severely impacted. This can lead to the coil becoming loose. Loose coils are prone to coil misalignment and collisions during vibration, resulting in insulation layer damage, which in turn can cause short circuits, transformer tripping and shutdown, or even burnt windings. Therefore, a glass fiber insulation skeleton and its matching fixing structure are proposed. This skeleton can automatically adjust the clamping force according to the transformer's internal temperature, achieving dynamic and stable fixing of the coils. This fundamentally avoids a series of faults caused by loose coils and ensures long-term reliable operation of the equipment. Summary of the Invention

[0004] To address the problems in the existing technology, this invention provides a glass fiber insulation skeleton that can automatically adjust the clamping force according to the internal temperature of the transformer, along with its matching fixing structure, to achieve dynamic and stable fixing of the wire assembly. This fundamentally avoids a series of faults caused by loose wire assemblies and ensures long-term reliable operation of the equipment.

[0005] The technical solution adopted by the present invention to solve its technical problem is a glass fiber insulating skeleton, including a skeleton body for winding wires. The skeleton body is made of glass fiber, radiation-resistant modified resin and high-viscosity high-temperature resistant adhesive. The surface of the skeleton body is provided with a spiral groove, and the inner wall of the groove is provided with an adhesive layer formed by high-viscosity high-temperature resistant adhesive.

[0006] The skeleton body includes a winding support part and bone seats at both ends of the winding support part. The outer sides of the two sets of bone seats are respectively provided with a lower support ring and an upper support ring. Several sets of fixing structures for clamping the wire group wound on the winding support part are slidably connected on the lower support ring. The side of the upper support ring near the fixing structure is provided with a pressing structure for pressing the fixing structure to move closer to the wire group to enhance the clamping force. The upper support ring is provided with a temperature control drive component for driving the pressing structure to work according to temperature changes.

[0007] Specifically, the fixing structure includes several sets of sliding grooves disposed on the upper surface of the lower support ring. An arc-shaped plate is slidably connected in the sliding groove. A guide slope is provided on the side of the arc-shaped plate away from the winding support. An elastic extrusion block is provided on the side of the arc-shaped plate close to the winding support. The extrusion structure is in extrusion contact with the side of the arc-shaped plate away from the elastic extrusion block.

[0008] Specifically, the extrusion structure includes several sets of movable cylinders disposed on the lower surface of the upper support ring. A sealing plate is slidably connected inside the movable cylinder. A drive rod is fixedly connected to one side of the sealing plate. One end of the drive rod passes through the movable cylinder and is slidably connected to it. An extrusion spring is connected between the sealing plate and the inner wall of the movable cylinder. An extrusion ring is provided below the upper support ring. The lower end of the drive rod is fixedly connected to the inner side of the extrusion ring through a connecting block. The inner side of the extrusion ring is in extrusion contact with the outer side of several sets of arc-shaped plates.

[0009] Specifically, the lower surface of the upper support ring is provided with several sets of T-shaped snap-fit ​​grooves, and the upper surface of the arc plate is fixedly connected with T-shaped snap-fit ​​blocks corresponding to the T-shaped snap-fit ​​grooves. The side of the T-shaped snap-fit ​​groove away from the bone seat is provided with an insertion port for inserting the T-shaped snap-fit ​​block into the T-shaped snap-fit ​​groove. The T-shaped snap-fit ​​block is located in the T-shaped snap-fit ​​groove and is slidably connected to the T-shaped snap-fit ​​groove.

[0010] Specifically, the temperature control drive assembly includes a liquid storage chamber located inside the upper support ring, the liquid storage chamber being filled with a thermally expanding fluid. The upper support ring has an adjustment chamber communicating with the liquid storage chamber. An adjustment plate is slidably connected to the adjustment chamber, and several sets of adjustment bolts are rotatably connected to the upper part of the adjustment plate. Several sets of adjustment seats corresponding to the adjustment bolts are fixedly connected to the upper surface of the upper support ring. One end of each adjustment bolt passes through an adjustment seat and is threadedly connected to it. The upper end of the movable cylinder, away from the drive rod, communicates with the interior of the liquid storage chamber.

[0011] Specifically, the upper support ring has an annular mounting cavity communicating with the liquid storage chamber. A heat-conducting ring is slidably connected in the mounting cavity. Several sets of tension springs are fixedly connected between the heat-conducting ring and the inner wall of the liquid storage chamber. A circumferentially distributed heat dissipation fin is fixedly connected to the side of the heat-conducting ring away from the liquid storage chamber. The upper surface of the upper support ring has several sets of slots communicating with the mounting cavity. The end of the heat dissipation fin away from the heat-conducting ring passes through the slot and is slidably connected to the slot.

[0012] Specifically, each of the arc-shaped plates has an arc-shaped fixing plate on its inner side, and a pressing spring is fixedly connected between the arc-shaped fixing plate and the arc-shaped plate. The inner side of the arc-shaped fixing plate is in pressure contact with the bone seat.

[0013] Specifically, the upper support ring, T-shaped clip, arc plate, and elastic compression block are all made of high thermal conductivity materials.

[0014] The beneficial effects of this invention are:

[0015] The fiberglass insulation skeleton described in this invention, through the design of temperature-controlled drive components, extrusion structure, and fixing structure, can automatically adjust the clamping force of the wire group according to the internal temperature changes of the transformer. At high temperatures, the thermal expansion fluid drives the extrusion structure to enhance the clamping force, cope with the attenuation of the adhesive layer and the thermal expansion gap of the components, and avoid the wire group from loosening, misalignment, and collision. After the temperature recovers, it automatically resets to the initial clamping state, which not only ensures the reliability of the fixation but also prevents the insulation layer of the wire group from being damaged by continuous high voltage. It solves the technical problem of the weakened anti-vibration fixation capability of existing insulation skeletons at high temperatures and ensures the long-term stable operation of the equipment.

[0016] The fiberglass insulation skeleton described in this invention synchronously controls the clamping force and the extension length of the heat dissipation fins through a temperature control drive component. When the temperature rises, the heat dissipation fins extend with the increase of pressure, expanding the heat dissipation area and rapidly cooling down, thus delaying the aging of the wire insulation layer. After the temperature drops, the heat dissipation fins automatically retract, avoiding excessive heat dissipation and increased energy consumption. At the same time, the sliding cooperation between the heat dissipation fins and the slot can scrape off surface impurities, achieving self-cleaning, reducing the impact of dust accumulation on heat dissipation efficiency, and reducing manual maintenance costs.

[0017] The fiberglass insulating skeleton described in this invention features a T-shaped locking block and a T-shaped locking groove that enable rapid assembly of the upper support ring and the arc-shaped plate without the need for additional fasteners. This design also ensures guiding accuracy during movement and prevents the arc-shaped plate from shifting or tilting. The arc-shaped fixing plate and the pressing spring design achieve radial pre-tightening of the skeleton seat and simultaneously adjust the clamping force of the skeleton seat when the temperature changes, preventing the skeleton seat from shaking. At the same time, it assists in the smooth reset of the arc-shaped plate, avoiding plastic deformation of the components due to long-term high pressure. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is an isometric view of the present invention;

[0020] Figure 2 This is an isometric view of the skeleton body of the present invention;

[0021] Figure 3 This is a schematic diagram of the lower support ring structure of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of region A;

[0023] Figure 5 This is a schematic diagram of the upper support ring structure of the present invention;

[0024] Figure 6This is a schematic diagram of the cross-sectional structure of the skeleton body of the present invention;

[0025] Figure 7 for Figure 6 Enlarged view of region B;

[0026] Figure 8 This is a schematic diagram of the cross-sectional structure of the upper support ring of the present invention;

[0027] Figure 9 for Figure 8 Enlarged view of region C;

[0028] Figure 10 for Figure 8 Enlarged view of region D;

[0029] In the diagram: 1. Winding support; 2. Bone seat; 3. Lower support ring; 4. Upper support ring; 5. Slide groove; 6. Arc plate; 7. Guide slope; 8. Elastic compression block; 9. Movable cylinder; 10. Sealing plate; 11. Drive rod; 12. Compression spring; 13. Compression ring; 14. Connecting block; 15. T-shaped snap-fit ​​groove; 16. T-shaped snap-fit ​​block; 17. Insert; 18. Liquid storage chamber; 19. Adjustment chamber; 20. Adjustment plate; 21. Adjustment bolt; 22. Adjustment seat; 23. Mounting chamber; 24. Heat-conducting ring; 25. Tension spring; 26. Heat dissipation fins; 27. Slot; 28. Arc-shaped fixing plate; 29. ​​Pressing spring. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] In order to automatically adjust the clamping force of the insulating frame and its supporting fixing structure according to the internal temperature of the transformer, thereby achieving dynamic and stable fixing of the coil and fundamentally avoiding a series of faults caused by loose coils, and ensuring long-term reliable operation of the equipment, as one embodiment of the present invention, such as... Figure 1 , Figure 2 , Figure 6 As shown, the glass fiber insulating skeleton of the present invention includes a skeleton body for winding wires. The skeleton body is made of glass fiber, radiation-resistant modified resin and high-viscosity high-temperature resistant adhesive. The surface of the skeleton body is provided with a spiral groove, and the inner wall of the groove is provided with an adhesive layer formed by high-viscosity high-temperature resistant adhesive.

[0032] The skeleton body includes a winding support part 1 and bone seats 2 located at both ends of the winding support part 1. The outer sides of the two sets of bone seats 2 are respectively provided with a lower support ring 3 and an upper support ring 4. Several sets of fixing structures for clamping the wire group wound on the winding support part 1 are slidably connected on the lower support ring 3. The side of the upper support ring 4 near the fixing structure is provided with a pressing structure for pressing the fixing structure to move closer to the wire group to enhance the clamping force. The upper support ring 4 is provided with a temperature control drive component for driving the pressing structure to work according to temperature changes.

[0033] When in use, the wire group is tightly wound along the spiral groove of the skeleton body, and then the lower support ring 3 is attached to the outside of the lower bone seat 2 to ensure that the fixing structure is on the outside of the winding support part 1 and maintains a distance from the surface of the wire group, so as to reserve adjustment space for subsequent clamping action. The upper support ring 4 is attached to the side of the upper bone seat 2 so that the upper end of the fixing structure is engaged with the corresponding part of the upper support ring 4, thereby achieving bidirectional limiting of the skeleton body and ensuring the assembly accuracy of the overall structure.

[0034] The extrusion structure moves downward in the direction of the support ring 3. The extrusion structure generates lateral extrusion force on several sets of fixed structures, causing the fixed structures to move synchronously towards the line group until the fixed structures are tightly attached to the surface of the line group, thus completing the initial clamping and fixing of the line group and effectively preventing the line group from shifting during equipment transportation or the initial start-up.

[0035] The initially fixed skeleton and wiring assembly will be installed at the designated installation location of the transformer, completing the assembly and deployment of this structure in the power equipment;

[0036] When the internal temperature of the transformer rises due to normal losses, overload, or fault during operation, the temperature control drive component will sense the temperature change and start working, driving the extrusion structure to move further down. The extrusion structure applies greater extrusion force to the fixed structure, which simultaneously enhances the clamping force of the fixed structure on the coil. This counteracts the vibration caused by the viscosity decay of the adhesive layer and the thermal expansion of the components at high temperatures, preventing the coil from becoming loose, misaligned, or colliding, preventing short circuit faults caused by insulation layer damage, and ensuring the continuous and stable operation of the transformer.

[0037] When the internal temperature of the transformer drops to the normal operating range, the temperature control drive component moves the extrusion structure upward, reducing the extrusion pressure on the fixed structure and restoring it to the initial clamping state. This maintains stable fixation of the coil while avoiding damage to the coil insulation layer caused by continuous high-voltage clamping, achieving dynamic adaptation of clamping force and balancing fixation reliability with coil protection effect.

[0038] To improve clamping stability, for example, such as Figure 3 , Figure 4As shown, the present invention also includes a number of sets of sliding grooves 5 disposed on the upper surface of the lower support ring 3, an arc plate 6 slidably connected in the sliding groove 5, a guide slope 7 provided on the side of the arc plate 6 away from the winding support part 1, and an elastic extrusion block 8 provided on the side of the arc plate 6 close to the winding support part 1; the extrusion structure is in extrusion contact with the side of the arc plate 6 away from the elastic extrusion block 8.

[0039] When using the upper support ring 4, the extrusion structure on the upper support ring 4 is aligned with the guide slope 7 of the arc plate 6. When the extrusion structure applies extrusion force to the arc plate 6, the arc plate 6 slides along the groove 5 toward the winding support part 1 until the elastic extrusion block 8 is in close contact with the surface of the wire group. The elastic extrusion block 8 can adaptively fit according to the winding shape of the wire group, increase the contact area with the wire group, improve clamping stability, buffer vibration and impact force, and avoid hard contact that could cause damage to the insulation layer of the wire group.

[0040] For example, such as Figure 5 , Figure 10 As shown, the present invention also includes the following: the extrusion structure includes several sets of movable cylinders 9 disposed on the lower surface of the upper support ring 4; a sealing plate 10 is slidably connected inside the movable cylinder 9; a drive rod 11 is fixedly connected to one side of the sealing plate 10; one end of the drive rod 11 passes through the movable cylinder 9 and is slidably connected to the movable cylinder 9; a compression spring 12 is connected between the sealing plate 10 and the inner wall of the movable cylinder 9; an extrusion ring 13 is provided below the upper support ring 4; the lower end of the drive rod 11 is fixedly connected to the inner side of the extrusion ring 13 through a connecting block 14; and the inner side of the extrusion ring 13 is in extrusion contact with the outer side of several sets of arc-shaped plates 6.

[0041] When using the device, when installing the support ring 4, ensure that the movable cylinder 9 corresponds to the arc plate 6, and at the same time make the inner side of the extrusion ring 13 fit against the guide slope 7 of the arc plate 6. During the downward movement of the sealing plate 10, the drive rod 11 is driven to extend downward. The drive rod 11 drives the extrusion ring 13 to move downward as a whole through the connecting block 14. The downward extrusion ring 13 is squeezed by the guide slope 7, so that the arc plate 6 moves smoothly along the slide groove 5 towards the wire group, ensuring the reliability of clamping.

[0042] When the internal temperature of the transformer rises, the temperature control drive assembly drives the sealing plate 10 to slide downward along the inner wall of the movable cylinder 9, and simultaneously drives the drive rod 11, connecting block 14 and extrusion ring 13 to move downward, so that the extrusion ring 13 increases the extrusion force on the guide slope 7 of the arc plate 6. During this process, the extrusion spring 12 is further compressed, and the clamping force of the arc plate 6 is simultaneously enhanced. This can effectively cope with the problems of viscosity decay of the adhesive layer and increased gap of component thermal expansion caused by high temperature, avoid the wire group from becoming loose and misaligned due to amplified vibration amplitude, and prevent short circuit faults caused by insulation layer damage.

[0043] When the internal temperature of the transformer drops to the normal operating range, the compressed spring 12 releases its elastic potential energy, generating an upward restoring force that pulls the sealing plate 10 to slide upward along the inner wall of the movable cylinder 9. The drive rod 11, connecting block 14, and compression ring 13 move upward synchronously, and the compression force of the compression ring 13 on the arc plate 6 weakens until the compression spring 12 returns to its initial compressed state. The sealing plate 10 stops moving, and the arc plate 6 moves slightly back under the reaction force of the elastic compression block 8. The clamping force returns to its initial stable value, avoiding damage to the insulation layer of the coil caused by continuous high-voltage clamping. This achieves dynamic adaptation between clamping force and temperature, balancing the reliability of coil fixing and protection effect.

[0044] To improve the stability and ease of connection between the upper support ring 4 and the lower support ring 3, for example, as shown... Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the present invention also includes a plurality of T-shaped snap-fit ​​grooves 15 on the lower surface of the upper support ring 4, and a T-shaped snap-fit ​​block 16 corresponding to the T-shaped snap-fit ​​groove 15 fixedly connected to the upper surface of the arc plate 6. The side of the T-shaped snap-fit ​​groove 15 away from the bone seat 2 is provided with an insertion port 17 for inserting the T-shaped snap-fit ​​block 16 into the T-shaped snap-fit ​​groove 15. The T-shaped snap-fit ​​block 16 is located in the T-shaped snap-fit ​​groove 15 and is slidably connected to the T-shaped snap-fit ​​groove 15.

[0045] When using the device, align the support ring 4 and the arc plate 6 with the T-shaped locking block 16 and insert it smoothly into the T-shaped locking groove 15 along the direction of the insertion hole 17. After insertion, the T-shaped locking block 16 and the T-shaped locking groove 15 are slidably connected. The T-shaped locking block 16 can prevent the upper support ring 4 and the arc plate 6 from separating in the vertical direction, ensuring connection stability. When the arc plate 6 is driven by the compression structure to move along the sliding groove 5 of the lower support ring 3, the T-shaped locking block 16 simultaneously slides parallel along the T-shaped locking groove 15, avoiding left and right deviation or tilting of the arc plate 6 during movement, and improving the consistency and accuracy of the clamping action.

[0046] To facilitate automatic adjustment of the coil clamping force based on changes in the transformer's internal temperature, for example, such as Figure 8 , Figure 9As shown, the present invention further includes the following: the temperature control drive assembly includes a liquid storage chamber 18 formed inside the upper support ring 4, the liquid storage chamber 18 being filled with a thermally expanding fluid; the upper support ring 4 has an adjustment chamber 19 communicating with the liquid storage chamber 18; an adjustment plate 20 is slidably connected to the adjustment chamber 19; a plurality of sets of adjustment bolts 21 are rotatably connected to the upper part of the adjustment plate 20; a plurality of sets of adjustment seats 22 corresponding to the adjustment bolts 21 are fixedly connected to the upper surface of the upper support ring 4; one end of the adjustment bolt 21 passes through the adjustment seat 22 and is threadedly connected to the adjustment seat 22; the upper end of the movable cylinder 9 away from the drive rod 11 is connected to the interior of the liquid storage chamber 18.

[0047] In use, after the initial assembly of the upper support ring 4 and the lower support ring 3 is completed, the adjusting bolt 21 is rotated to push the adjusting plate 20 to slide in the adjusting cavity 19. During the downward movement of the adjusting plate 20, it exerts a squeezing effect on the thermally expanding fluid filled in the liquid storage cavity 18, causing the fluid pressure in the cavity to increase. The high-pressure fluid enters the movable cylinder 9, pushing the sealing plate 10 in the movable cylinder 9 to slide downward, and then drives the squeezing ring 13 to move downward through the driving rod 11 and the connecting block 14, squeezing the arc plate 6 to move in the direction of the wire group until the preset initial clamping force is reached.

[0048] The threaded connection of the adjusting bolt 21 has a self-locking characteristic. After adjustment, it can stably lock the position of the adjusting plate 20, preventing the adjusting plate 20 from shifting during equipment transportation, vibration or initial operation, ensuring that the initial clamping force is continuously stable, adapting to the clamping requirements of different specifications of wire groups, and can be finely adjusted by bolts without replacing parts, improving the versatility of the structure.

[0049] When the internal temperature of the transformer rises, the thermally expanding fluid in the storage chamber 18 expands in volume due to the increased temperature, and the pressure inside the chamber increases synchronously. This pressure is then transmitted to the inside of the movable cylinder 9. The high-pressure fluid further pushes the sealing plate 10 downward, causing the compression spring 12 to be further compressed. At the same time, the drive rod 11 drives the compression ring 13 to continue to move downward, significantly increasing the compression force on the arc plate 6. Ultimately, this increases the clamping force of the arc plate 6 on the wire group, addressing the issues of viscosity decay of the viscous layer and increased gap due to thermal expansion of components at high temperatures. This prevents the wire group from becoming loose or misaligned and avoids short-circuit faults caused by insulation layer damage.

[0050] When the internal temperature of the transformer drops to the normal operating range, the thermally expanding fluid in the storage chamber 18 shrinks in volume due to the temperature drop, and the pressure inside the chamber decreases accordingly. At this time, the compression spring 12 in the movable cylinder 9 releases elastic potential energy, causing the sealing plate 10 to slide upward along the inner wall of the movable cylinder 9. During the upward movement of the sealing plate 10, the compression ring 13 is moved upward synchronously through the drive rod 11 and the connecting block 14, so that the compression force of the compression ring 13 on the arc plate 6 gradually weakens, and the clamping force of the arc plate 6 on the wire group is restored to the initial set value, avoiding damage to the insulation layer of the wire group caused by continuous high-voltage clamping.

[0051] To automatically adjust the heat dissipation rate, for example, such as Figure 8 , Figure 9 , Figure 10 As shown, the present invention further includes an annular mounting cavity 23 communicating with the liquid storage cavity 18 within the upper support ring 4. A heat-conducting ring 24 is slidably connected within the mounting cavity 23. A plurality of tension springs 25 are fixedly connected between the heat-conducting ring 24 and the inner wall of the liquid storage cavity 18. A circumferentially distributed heat dissipation fins 26 are fixedly connected to the side of the heat-conducting ring 24 away from the liquid storage cavity 18. A plurality of slots 27 communicating with the mounting cavity 23 are provided on the upper surface of the upper support ring 4. The end of the heat dissipation fin 26 away from the heat-conducting ring 24 passes through the slot 27 and is slidably connected to the slot 27.

[0052] When in use, rotating the adjusting bolt 21 drives the adjusting plate 20 to move downwards. The adjusting plate 20 squeezes the thermally expanding fluid in the liquid storage chamber 18, causing the pressure inside the chamber to rise synchronously. This pressure is transmitted to the movable cylinder 9 to drive the squeezing ring 13 to move downwards, completing the initial clamping force adjustment of the wire assembly. On the other hand, it acts on the heat-conducting ring 24 in the annular mounting cavity 23, pushing the heat-conducting ring 24 to slide along the mounting cavity 23 in a sealed manner. When the heat-conducting ring 24 moves, it simultaneously drives the heat dissipation fins 26 to slide along the slot 27, so that the upper end of the heat dissipation fins 26 extends out of the slot 27. During the initial adjustment, the heat dissipation fins 26 are not fully extended, and the equipment is in the normal temperature working range. The maximum heat dissipation power is not required. The reserved extension margin can be adapted to the subsequent high temperature working conditions. This avoids the heat dissipation fins 26 being fully extended and overexposed, which would cause dust to adhere and affect the heat dissipation efficiency. At the same time, by calibrating the initial extension amount, the basic heat dissipation requirements of different equipment can be matched, improving the structural adaptability.

[0053] The self-locking characteristic of the adjusting bolt 21 ensures that the pressure in the liquid storage chamber 18 remains stable after the adjusting plate 20 is locked. The initial extension state of the heat conduction ring 24 and the heat dissipation fins 26 is also fixed synchronously, ensuring that the initial heat dissipation is constant and avoiding abnormal temperature due to heat dissipation fluctuations during the initial start-up of the equipment.

[0054] When the internal temperature of the transformer rises, the heat dissipation fins 26 extend further along the slot 27. The extension length increases with the temperature. The greater the extension, the larger the contact area with the air, and the heat dissipation efficiency is improved accordingly. It can quickly remove the large amount of heat generated by the frame body and the wire group during operation, and prevent the insulation layer of the wire group from aging and being damaged due to high temperature, thus further ensuring the safety of equipment operation.

[0055] When the internal temperature of the transformer drops to the normal operating range, the volume of the thermally expanded fluid in the liquid storage chamber 18 contracts, the tension spring 25 releases its elastic potential energy, and pulls the heat conduction ring 24 and the heat dissipation fins 26 to reset, restoring the heat dissipation area to its initial state. The inner wall of the slot 27 can scrape off the dust, debris and other impurities attached to the surface of the heat dissipation fins 26, realizing the self-cleaning function of the heat dissipation fins 26, avoiding the accumulation of dirt that blocks the heat dissipation channels, maintaining the cleanliness and heat dissipation efficiency of the heat dissipation fins 26, and reducing manual maintenance costs.

[0056] To ensure the stability of the relative position between the skeleton body and the wire assembly, for example, such as Figure 3 , Figure 4 As shown, the present invention also includes an arc-shaped fixing plate 28 provided on the inner side of the arc-shaped plate 6, a pressing spring 29 fixedly connected between the arc-shaped fixing plate 28 and the arc-shaped plate 6, and the inner side of the arc-shaped fixing plate 28 being in pressure contact with the bone seat 2.

[0057] When in use, when assembling the lower support ring 3, align the arc-shaped fixing plate 28 with the lower bone seat 2. At this time, the arc-shaped fixing plate 28 and the pressing spring 29 are in a slightly compressed state, generating a continuous pre-tightening force. The arc-shaped fixing plate 28 forms a radial clamp on the bone seat 2, reducing the shaking of the skeleton body.

[0058] When the internal temperature of the transformer rises, the arc plate 6 moves, the squeezing action between the arc fixing plate 28 and the surface of the bone seat 2 is enhanced, the pressing spring 29 is further compressed, the clamping force of the arc fixing plate 28 on the bone seat 2 is increased, the wire group is strengthened and the stability of the bone seat 2 is improved, and the bone seat 2 is prevented from shaking due to the gap caused by the thermal expansion of the components under high temperature, further ensuring the relative position stability of the frame body and the wire group.

[0059] When the internal temperature of the transformer decreases, the arc plate 6 resets. At the same time, the pressing spring 29 drives the arc fixing plate 28 to move away from the bone seat 2. The clamping force on the bone seat 2 also returns to the initial pre-tight state. The reset process does not require manual intervention, ensuring that the clamping state of the wire group and the bone seat 2 can return to the initial stable value.

[0060] The resetting action of the pressing spring 29 can eliminate the continuous pressure on the bone seat 2 due to excessive clamping at high temperature, and prevent the bone seat 2 from deforming due to long-term high-pressure clamping; at the same time, it can prevent the arc plate 6 from causing long-term pressure damage to the insulation layer of the wire group, and extend the service life of the skeleton body and the wire group.

[0061] For example, the present invention also includes that the upper support ring 4, the T-shaped card block 16, the arc plate 6 and the elastic compression block 8 are all made of high thermal conductivity materials.

[0062] During use, the high temperature generated by the coil assembly can be quickly conducted to the liquid storage chamber 18 through the elastic compression block 8, arc plate 6, T-shaped clamping block 16 and upper support ring 4. The thermally expanding fluid senses the temperature change in time and expands synchronously, avoiding the lag of temperature control drive and ensuring that clamping force and heat dissipation are activated in time. The high thermal conductivity can disperse the local concentrated heat of the coil assembly, prevent the insulation layer of the coil assembly from being damaged due to local overheating, and also reduce the deformation difference of different components due to large temperature differences, ensuring clamping stability. At the same time, the heat is conducted to the upper support ring 4 and heat conduction ring 24, and then dissipated through heat dissipation fins 26, improving the overall heat dissipation effect and further reducing the working temperature of the coil assembly and frame.

[0063] In use, the wire group is wound along the spiral groove of the skeleton body, and the lower support ring 3 is attached to the outer side of the lower bone seat 2 of the skeleton body. The several sets of sliding grooves 5 on the lower support ring 3 are aligned with the outer area of ​​the wire group. At the same time, the arc-shaped fixing plate 28 is aligned with the lower bone seat 2. At this time, the arc-shaped fixing plate 28 and the pressing spring 29 are in a slightly compressed state, generating a continuous pre-tightening force. The arc-shaped fixing plate 28 forms a radial clamp on the bone seat 2, reducing the shaking of the skeleton body. The upper support ring 4 is attached to the side of the upper bone seat 2. The T-shaped locking block 16 on the upper surface of the arc plate 6 is aligned with the T-shaped locking groove 15 insertion port 17 on the lower surface of the upper support ring 4, so that the T-shaped locking block 16 and the T-shaped locking groove 15 form a sliding connection, completing the initial positioning of the upper support ring 4 and the lower support ring 3.

[0064] Rotating the adjusting bolt 21 on the upper surface of the upper support ring 4, the adjusting plate 20 in the adjusting cavity 19 is pushed down through the threaded engagement of the adjusting seat 22, squeezing the thermally expanding fluid in the liquid storage cavity 18, increasing the fluid pressure and transmitting it to the movable cylinder 9. The fluid pushes the sealing plate 10 down, which drives the squeezing ring 13 down through the drive rod 11 and connecting block 14. The squeezing arc plate 6 slides along the slide groove 5 towards the wire group until the elastic squeezing block 8 is tightly attached to the surface of the wire group, achieving the preset initial clamping force. The position of the adjusting plate 20 can be locked by the adjusting bolt 21 to ensure the stability of the initial clamping force.

[0065] The initially fixed skeleton body, wire group and support ring are assembled into the designated installation position of the transformer to complete the deployment of the structure in the power equipment and ensure that the installation is firm and without loosening.

[0066] After the transformer heats up during operation, the thermally expanding fluid in the storage chamber 18 expands in volume and increases in pressure, further pushing the sealing plate 10 in the movable cylinder 9 downward. The compression spring 12 is compressed, and the compression ring 13 increases the compression force on the arc plate 6. The arc plate 6 drives the elastic compression block 8 to tighten, strengthening the clamping force on the wire group and offsetting the attenuation of the viscous layer and the thermal expansion gap. At the same time, the high-pressure fluid pushes the heat-conducting ring 24 to slide along the mounting cavity 23, and the heat dissipation fins 26 extend along the slot 27, expanding the heat dissipation area to quickly cool down and delay the aging of the insulation layer.

[0067] After the temperature drops to the normal range, the thermally expanded fluid contracts, the pressure in the liquid storage chamber 18 decreases, the compression spring 12 releases its elastic potential energy, and pulls the sealing plate 10, the drive rod 11 and the compression ring 13 to move upward. The arc plate 6 moves back slightly under the reaction force of the elastic compression block 8, and the clamping force returns to its initial value. The tension spring 25 pulls the heat conduction ring 24 to reset, the heat dissipation fins 26 retract into the slot 27, and the inner wall of the slot 27 scrapes away impurities from the surface of the fins to achieve self-cleaning.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A glass fiber insulating skeleton, characterized in that, It includes a skeleton body for winding the wire assembly, the skeleton body being made of glass fiber, radiation-resistant modified resin and high-viscosity high-temperature resistant adhesive, the surface of the skeleton body being provided with a spiral groove, and the inner wall of the groove being provided with an adhesive layer formed by the high-viscosity high-temperature resistant adhesive; The skeleton body includes a winding support part (1) and bone seats (2) at both ends of the winding support part (1). The outer sides of the two sets of bone seats (2) are respectively provided with a lower support ring (3) and an upper support ring (4). The lower support ring (3) is slidably connected with a number of fixed structures for clamping the wire group wound on the winding support part (1). The upper support ring (4) is provided with a pressing structure on the side near the fixed structure for pressing the fixed structure to move closer to the wire group to enhance the clamping force. The upper support ring (4) is provided with a temperature control drive component for driving the pressing structure to work according to temperature changes. The fixing structure includes several sets of sliding grooves (5) set on the upper surface of the lower support ring (3). An arc plate (6) is slidably connected in the sliding groove (5). A guide slope (7) is provided on the side of the arc plate (6) away from the winding support part (1). An elastic extrusion block (8) is provided on the side of the arc plate (6) close to the winding support part (1). The extrusion structure is in extrusion contact with the side of the arc plate (6) away from the elastic extrusion block (8). The extrusion structure includes several sets of movable cylinders (9) arranged on the lower surface of the upper support ring (4). A sealing plate (10) is slidably connected inside the movable cylinder (9). A drive rod (11) is fixedly connected to one side of the sealing plate (10). One end of the drive rod (11) passes through the movable cylinder (9) and is slidably connected to the movable cylinder (9). An extrusion spring (12) is connected between the sealing plate (10) and the inner wall of the movable cylinder (9). An extrusion ring (13) is provided below the upper support ring (4). The lower end of the drive rod (11) is fixedly connected to the inner side of the extrusion ring (13) through a connecting block (14). The inner side of the extrusion ring (13) is in extrusion contact with the outer side of several sets of arc plates (6). The lower surface of the upper support ring (4) is provided with several sets of T-shaped snap-fit ​​grooves (15). The upper surface of the arc plate (6) is fixedly connected with a T-shaped snap-fit ​​block (16) corresponding to the T-shaped snap-fit ​​groove (15). The side of the T-shaped snap-fit ​​groove (15) away from the bone seat (2) is provided with an insertion port (17) for inserting the T-shaped snap-fit ​​block (16) into the T-shaped snap-fit ​​groove (15). The T-shaped snap-fit ​​block (16) is located in the T-shaped snap-fit ​​groove (15) and is slidably connected to the T-shaped snap-fit ​​groove (15).

2. The glass fiber insulating skeleton according to claim 1, characterized in that, The temperature control drive assembly includes a liquid storage chamber (18) located inside the upper support ring (4), which is filled with a thermally expanding fluid. The upper support ring (4) has an adjustment chamber (19) that communicates with the liquid storage chamber (18). An adjustment plate (20) is slidably connected to the adjustment chamber (19). Several sets of adjustment bolts (21) are rotatably connected to the upper part of the adjustment plate (20). Several sets of adjustment seats (22) corresponding to the adjustment bolts (21) are fixedly connected to the upper surface of the upper support ring (4). One end of the adjustment bolt (21) passes through the adjustment seat (22) and is threadedly connected to the adjustment seat (22). The upper end of the movable cylinder (9) away from the drive rod (11) communicates with the inside of the liquid storage chamber (18).

3. The glass fiber insulating skeleton according to claim 2, characterized in that, The upper support ring (4) is provided with an annular mounting cavity (23) communicating with the liquid storage cavity (18). A heat-conducting ring (24) is sealed and slidably connected in the mounting cavity (23). Several sets of tension springs (25) are fixedly connected between the heat-conducting ring (24) and the inner wall of the liquid storage cavity (18). A circumferentially distributed heat dissipation fins (26) are fixedly connected on the side of the heat-conducting ring (24) away from the liquid storage cavity (18). Several sets of slots (27) communicating with the mounting cavity (23) are provided on the upper surface of the upper support ring (4). The end of the heat dissipation fin (26) away from the heat-conducting ring (24) passes through the slot (27) and is slidably connected with the slot (27).

4. The glass fiber insulating skeleton according to claim 3, characterized in that, The inner side of the arc plate (6) is provided with an arc fixing plate (28), and a pressing spring (29) is fixedly connected between the arc fixing plate (28) and the arc plate (6). The inner side of the arc fixing plate (28) is in contact with the bone seat (2).

5. The glass fiber insulating skeleton according to claim 4, characterized in that, The upper support ring (4), T-shaped card block (16), arc plate (6) and elastic compression block (8) are all made of high thermal conductivity materials.

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