Alloy core three-dimensional winding transformer and preparation method thereof

Abstract

The application discloses a kind of alloy core three-dimensional winding transformer and preparation method thereof, belong to transformer technical field, including base, the iron core being installed at the top of base, the lower clamp being located at the bottom end of iron core, the upper clamp being fixed at the top of iron core, the low voltage coil being sleeved at the outside of iron core.The application is uniformly provided with first S-shaped flow guide plate and second S-shaped flow guide plate along the circumferential direction on the inside and outside of insulator, and first S-shaped flow guide plate and second S-shaped flow guide plate are staggered on vertical plane, and first S-shaped flow guide plate and second S-shaped flow guide plate can rotate on support, first S-shaped flow guide plate and second S-shaped flow guide plate are vertically arranged in initial state, and corrugated flow guide structure is formed between insulator and coil, airflow can be guided, airflow generates transverse fluctuation in vertical rising process, path changes from "straight line" to "curve", equivalent increases the contact area of airflow and winding surface, enhances turbulence intensity, and heat exchange efficiency is improved.

Description

Technical Field

[0001] This invention relates to a transformer, and more particularly to a three-dimensional wound transformer with an alloy core and its manufacturing method, belonging to the field of transformer technology. Background Technology

[0002] Currently, during the operation of the transformer, when the temperature sensor detects that the temperature exceeds the set value, it will automatically control the bottom fan to start for air cooling. However, the cold air is delivered vertically upwards from both sides of the base. The airflow rate is faster near the top of the fan, while the airflow rate is relatively slow in other areas, resulting in uneven cooling. Furthermore, the airflow flows parallel to the winding surface, which easily forms a laminar flow state. A stable boundary layer with low thermal conductivity (similar to an air insulation layer) will adhere to the winding surface, hindering heat transfer.

[0003] To address this issue, a three-dimensional wound transformer with an alloy core and its fabrication method were designed to optimize the aforementioned problems. Summary of the Invention

[0004] The main objective of this invention is to provide a three-dimensional wound transformer with an alloy core and its manufacturing method. This is achieved by uniformly arranging a first S-shaped guide plate and a second S-shaped guide plate along the circumferential direction on both the inner and outer sides of the insulator. The first and second S-shaped guide plates are staggered in a vertical plane and can rotate on a support. In the initial state, the first and second S-shaped guide plates are vertically positioned, forming a corrugated flow-guiding structure between the insulator and the coil. This guides the airflow, causing lateral fluctuations during vertical ascent, changing the path from a straight line to a curve. This effectively increases the contact area between the airflow and the winding surface, enhancing turbulence intensity and improving heat exchange efficiency. Furthermore, after the transformer temperature rises, a combination of an upper annular mesh plate, a bimetallic plate, a lower annular mesh plate, a limiting ring, a first lifting rope, and a second lifting rope is used. The angle adjustment mechanism can increase the tilt angle of the first S-shaped guide plate and the second S-shaped guide plate, further increasing the contact path length between the airflow and the winding surface. At the same time, the lateral velocity component of the airflow is enhanced, the turbulence intensity is increased, and the cooling rate is improved. By setting an annular guide mechanism consisting of a first hollow guide ring, a second hollow guide ring, an exhaust port, a limiting groove, and an air inlet between the lower clamp and the coil, the output port of the fan and the air inlet are connected, so that the gas can be evenly distributed between the coils during cooling, ensuring uniform heat dissipation. By setting a damping mechanism consisting of grooves, damping springs, fixing plates, dampers, and mounting holes at the four corners of the base, vibration energy is absorbed through elastic deformation, reducing the relative displacement and mechanical stress between components, avoiding problems such as insulation aging and poor contact caused by vibration. In addition, by reducing the vibration amplitude, the tightness of the connecting parts is maintained, improving the reliability of the equipment.

[0005] The objective of this invention can be achieved by adopting the following technical solution: A three-dimensional wound transformer with an alloy core and its manufacturing method are disclosed, comprising a base, an iron core mounted on top of the base, a lower clamp at the bottom of the iron core, an upper clamp fixed on top of the iron core, a low-voltage coil sleeved outside the iron core, a high-voltage coil sleeved outside the low-voltage coil, a pad at the top of the lower clamp, a pressure block at the bottom of the upper clamp, an insulator between the low-voltage coil and the high-voltage coil, and fans located on both sides of the base. Both ends of the top of the lower clamp are equipped with annular flow guiding mechanisms to uniformly guide current between the low-voltage coil and the high-voltage coil; The insulator is uniformly provided with a first support and a second support along the circumference on both the inner and outer sides, and the second support is located vertically below the first support. The first support and the second support are staggered on the vertical surface of the insulator. A first S-shaped guide plate is symmetrically rotated and installed on the first support on the inner and outer sides of the insulator, and a second S-shaped guide plate is symmetrically rotated and installed on the second support on the inner and outer sides of the insulator. The positions of adjacent first S-shaped guide plates and second S-shaped guide plates are opposite. The inner top of the insulator is provided with an angle adjustment mechanism to simultaneously adjust the rotation angle of the first S-shaped guide plate and the second S-shaped guide plate.

[0006] Preferably, the annular flow guiding mechanism includes a first hollow flow guiding ring, a second hollow flow guiding ring, an exhaust port, a limiting groove, and an air inlet. The first hollow flow guiding ring is fixed to the top of the lower clamp, and the iron core passes through the interior of the first hollow flow guiding ring. The outer diameter of the first hollow flow guiding ring is larger than the outer diameter of the high-voltage coil. The second hollow flow guiding ring is horizontally arranged on the inner side of the first hollow flow guiding ring. The interior of the first hollow flow guiding ring is connected to the interior of the second hollow flow guiding ring. The top of the second hollow flow guiding ring has exhaust ports evenly arranged in an annular array. The exhaust ports are located below the gap between the low-voltage coil and the high-voltage coil. The second hollow flow guiding ring and the first hollow flow guiding ring have limiting grooves that cooperate with the pad block. Air inlets are opened at both ends of the bottom of the first hollow flow guiding ring. The output end of the fan is connected to the interior of the first hollow flow guiding ring through the air inlet.

[0007] Preferably, the exhaust port is rectangular in shape, and the length of the exhaust port is greater than the distance between the low-voltage coil and the high-voltage coil.

[0008] Preferably, the inner diameter of the second hollow guide ring is larger than the outer diameter of the vertical end of the iron core, and the inner side of the second hollow guide ring is uniformly provided with diversion holes.

[0009] Preferably, the angle adjustment mechanism includes an upper annular mesh plate, a bimetallic plate, a lower annular mesh plate, a limiting ring, a first lifting rope, and a second lifting rope. The upper annular mesh plate is horizontally fixed to the top of both sides of the insulator. The tops of the two sets of upper annular mesh plates are attached to the bottom of the pressure block. The bottoms of both sets of upper annular mesh plates are vertically installed in a circular array with bimetallic plates. Lower annular mesh plates are rotatably installed on both sides of the insulator below the bimetallic plates. The tops of the two sets of lower annular mesh plates are fixedly connected to the bimetallic plates at the bottom of the upper annular mesh plates. The bottom of the lower annular mesh plates is located inside the insulator. All outer sides are horizontally fixed with limit rings. The bottom of the lower annular mesh plate is uniformly provided with first suspension ropes along the circumference on the side away from the insulator. The first suspension rope passes through the limit ring on the side away from the insulator and is slidably connected to the limit ring. The bottom end of the first suspension rope is fixedly connected to the bottom end of multiple sets of second S-shaped guide plates. The bottom of the lower annular mesh plate is uniformly provided with second suspension ropes along the circumference on the side near the insulator. The second suspension rope passes through the limit ring on the side near the insulator and is slidably connected to the limit ring. The bottom end of the second suspension rope is fixedly connected to the bottom end of multiple sets of first S-shaped guide plates.

[0010] Preferably, a first sliding hole is uniformly formed along the circumference on the side of the limiting ring away from the insulator, and a first lifting rope passes through the inside of the first sliding hole. A second sliding hole is uniformly formed along the circumference on the side of the limiting ring close to the insulator, and a second lifting rope passes through the inside of the second sliding hole.

[0011] Preferably, the surface of the limiting ring is provided with through grooves in a uniform annular array, and the through grooves are located between adjacent first sliding holes.

[0012] Preferably, both the first S-shaped guide plate and the second S-shaped guide plate are made of polyetheretherketone (PEEK), and the surfaces of the first S-shaped guide plate and the second S-shaped guide plate are coated with a silicon-based nano-coating.

[0013] Preferably, the damping mechanism includes a groove, a damping spring, a fixing plate, and a damper. The groove is located at the bottom of the four corners of the base. The bottom of each groove is vertically equipped with a damping spring. The bottom of each damping spring is horizontally equipped with a fixing plate. A damper is provided between the top of the fixing plate and the top of the groove, and the damper is located inside the damping spring.

[0014] Preferably, the fixing plate has symmetrical mounting holes at both ends, and the bottom of each mounting hole is provided with a rubber shock-absorbing pad.

[0015] The beneficial effects of this invention are as follows: This invention provides a three-dimensional wound transformer with an alloy core and its manufacturing method. A first S-shaped guide plate and a second S-shaped guide plate are uniformly arranged circumferentially on both the inner and outer sides of the insulator, and the first and second S-shaped guide plates are staggered in a vertical plane. The first and second S-shaped guide plates can rotate on a support. In the initial state, the first and second S-shaped guide plates are vertically arranged, forming a corrugated flow-guiding structure between the insulator and the coil, which can guide the airflow. During the vertical upward movement of the airflow... The transverse ripples change the path from a straight line to a curve, effectively increasing the contact area between the airflow and the winding surface, enhancing turbulence intensity, and improving heat exchange efficiency. In addition, after the transformer temperature rises, the angle adjustment mechanism composed of the upper annular mesh plate, bimetallic plate, lower annular mesh plate, limiting ring, first suspension rope, and second suspension rope can increase the tilt angle of the first S-shaped guide plate and the second S-shaped guide plate, further increasing the contact path length between the airflow and the winding surface. At the same time, the transverse velocity component of the airflow is enhanced, the turbulence intensity is increased, and the cooling rate is improved. By setting an annular flow guiding mechanism consisting of a first hollow flow guiding ring, a second hollow flow guiding ring, an exhaust port, a limiting groove, and an air inlet between the lower clamp and the coil, the output port of the fan and the air inlet are connected, so that the gas can be evenly distributed between the coils during cooling, ensuring uniform heat dissipation. The shock absorption mechanism, consisting of grooves, damping springs, fixing plates, dampers, and mounting holes at the four corners of the base, absorbs vibration energy through elastic deformation, reduces relative displacement and mechanical stress between components, and avoids problems such as insulation aging and poor contact caused by vibration. In addition, by reducing the vibration amplitude, it maintains the tightness of the connecting parts and improves the reliability of the equipment. Attached Figure Description

[0016] Figure 1 This is a front view of a preferred embodiment of the alloy core three-dimensional wound transformer and its preparation method according to the present invention; Figure 2 This is an initial state internal cross-sectional view of the coil in a preferred embodiment of the alloy core three-dimensional wound transformer and its preparation method of the present invention. Figure 3 This is a cross-sectional view of the internal coil at high temperature in a preferred embodiment of the alloy core three-dimensional wound transformer and its preparation method of the present invention. Figure 4 This is a cross-sectional view of the outer side of the insulator in a preferred embodiment of the alloy core three-dimensional wound transformer and its preparation method of the present invention; Figure 5 This is a preferred embodiment of a three-dimensional wound transformer with an alloy core and its preparation method according to the present invention. Figure 3 Enlarged view of point A in the middle; Figure 6This is a diagram of a limiting ring structure in a preferred embodiment of the alloy core three-dimensional wound transformer and its preparation method of the present invention; Figure 7 This is a cross-sectional view of a hollow current-conducting ring in a preferred embodiment of a three-dimensional wound transformer with an alloy core and its preparation method according to the present invention. Figure 8 This is a diagram of a preferred embodiment of the shock absorption mechanism in the alloy core three-dimensional wound transformer and its preparation method of the present invention; Figure 9 This is a preferred embodiment of a three-dimensional wound transformer with an alloy core and its preparation method according to the present invention. Figure 2 Enlarged view of section B in the middle.

[0017] In the diagram: 1. Base; 101. Iron core; 102. Lower clamp; 103. Upper clamp; 104. Low-voltage coil; 105. High-voltage coil; 106. Insulator; 107. Pad; 108. Pressure block; 109. Fan; 2. First hollow guide ring; 3. Second hollow guide ring; 4. Exhaust port; 5. Limiting groove; 6. Inlet; 7. First bracket; 8. First S-shaped guide plate; 9. Second bracket; 10. Second S-shaped guide plate; 11. Upper annular mesh plate; 12. Bimetallic plate; 13. Lower annular mesh plate; 14. Limiting ring; 1401. First sliding hole; 1402. Second sliding hole; 1403. Through groove; 15. First hoisting rope; 16. Second hoisting rope; 17. Shock absorption mechanism; 1701. Groove; 1702. Shock absorption spring; 1703. Fixing plate; 1704. Damper; 1705. Mounting hole. Detailed Implementation

[0018] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0019] like Figures 1-9 As shown, this embodiment provides a three-dimensional wound transformer with an alloy core and its manufacturing method, including a base 1, an iron core 101 installed on the top of the base 1, a lower clamp 102 located at the bottom of the iron core 101, an upper clamp 103 fixed on the top of the iron core 101, a low-voltage coil 104 sleeved on the outside of the iron core 101, a high-voltage coil 105 sleeved on the outside of the low-voltage coil 104, a pad 107 located on the top of the lower clamp 102, a pressure block 108 located at the bottom of the upper clamp 103, an insulator 106 located between the low-voltage coil 104 and the high-voltage coil 105, and fans 109 located on both sides of the base 1. Both ends of the top of the lower clamp 102 are provided with annular flow guiding mechanisms to uniformly guide the flow between the low-voltage coil 104 and the high-voltage coil 105. The insulator 106 is uniformly provided with a first support 7 and a second support 9 along the circumferential direction on both its inner and outer sides, and the second support 9 is located vertically below the first support 7. The first support 7 and the second support 9 are staggered on the vertical surface of the insulator 106. A first S-shaped guide plate 8 is symmetrically and rotatably installed on the first support 7 on both the inner and outer sides of the insulator 106, and a second S-shaped guide plate 10 is symmetrically and rotatably installed on the second support 9 on both the inner and outer sides of the insulator 106. The positions of adjacent first S-shaped guide plates 8 and second S-shaped guide plates 10 are opposite. An angle adjustment mechanism is provided on the inner top of the insulator 106 to simultaneously adjust the rotation angle of the first S-shaped guide plate 8 and the second S-shaped guide plate 10.

[0020] Overall working principle: In the initial state, the first S-shaped guide plate 8 and the second S-shaped guide plate 10 droop due to gravity. Due to the shape characteristics of the first S-shaped guide plate 8 and the second S-shaped guide plate 10, a corrugated flow guiding structure is formed on both sides of the insulator 106 between the low-voltage coil 104 and the high-voltage coil 105. At this time, the guide plates are arranged in a sinusoidal trajectory, providing an initial path for airflow guidance. The shock absorption mechanism 17 at the four corners of the base 1 absorbs the vibration during equipment operation and maintains the stability of the components through the cooperation of the shock absorption spring 1702 and the damper 1704. When the transformer temperature rises above the set threshold, the fan 109 starts and guides the airflow through the annular flow guiding mechanism. The airflow enters the coils evenly, guided by the first S-shaped guide plate 8 and the second S-shaped guide plate 10. During the vertical ascent, the airflow generates lateral fluctuations, changing the path from a "straight line" to a "curve," which effectively increases the contact length between the airflow and the winding surface and forms turbulence, breaking the boundary layer thermal resistance and accelerating cooling. When the transformer's cooling rate is less than its heating rate, causing the transformer to heat up again, the angle adjustment mechanism will simultaneously adjust the angles of the first S-shaped guide plate 8 and the second S-shaped guide plate 10. The amplitude of the airflow sinusoidal trajectory increases, the contact path length between the airflow and the winding surface is longer, and the turbulence intensity is also enhanced, further increasing the cooling rate.

[0021] In this embodiment, the annular flow guiding mechanism includes a first hollow flow guiding ring 2, a second hollow flow guiding ring 3, an exhaust port 4, a limiting groove 5, and an air inlet 6. The first hollow flow guiding ring 2 is fixed to the top of the lower clamp 102. The iron core 101 passes through the inside of the first hollow flow guiding ring 2. The outer diameter of the first hollow flow guiding ring 2 is larger than the outer diameter of the high voltage coil 105. The outer diameter of the first hollow flow guiding ring 2 is 10-15cm larger than the outer diameter of the high voltage coil 105, forming an annular air cavity with a width of about 5cm. According to fluid dynamics calculations, this size can make the airflow velocity uniformly decrease from 8m / s at the outlet of the fan 109 to 4m / s, avoiding high-speed airflow impacting the coil insulation layer. A second hollow guide ring 3 is horizontally arranged on the inner side of the first hollow guide ring 2. The interior of the first hollow guide ring 2 is connected to the interior of the second hollow guide ring 3. The top of the second hollow guide ring 3 is evenly provided with exhaust ports 4 in a ring array. The exhaust ports 4 are located below the gap between the low-voltage coil 104 and the high-voltage coil 105. The second hollow guide ring 3 and the first hollow guide ring 2 are provided with limiting grooves 5 that cooperate with the pad block 107. Both ends of the bottom of the first hollow guide ring 2 are provided with air inlets 6. The output end of the fan 109 is connected to the interior of the first hollow guide ring 2 through the air inlets 6.

[0022] Local working principle: When the fan 109 is started, cold air is blown into the interior of the first hollow guide ring 2 through the air inlet 6, and then into the second hollow guide ring 3. It is then evenly discharged upward from multiple sets of rectangular exhaust ports 4 and enters the gap between the low-voltage coil 104 and the high-voltage coil 105 for cooling.

[0023] In this embodiment, the exhaust port 4 is rectangular in shape, and the length of the exhaust port 4 is greater than the distance between the low-voltage coil 104 and the high-voltage coil 105.

[0024] Local working principle: The exhaust port 4 adopts a rectangular cross section with a length × width of 3cm × 1cm. The length exceeds the coil spacing by 1cm. According to Bernoulli's equation, when the airflow is ejected, the static pressure is increased due to the expansion of the cross section, forming a "fan-shaped" diffusion flow field that covers 80%-90% of the radial range of the coil gap. The exhaust port 4 is evenly distributed in the circumference to ensure that the airflow deviation in each area of ​​the coil circumference is ≤5%.

[0025] In this embodiment, the inner diameter of the second hollow guide ring 3 is larger than the outer diameter of the vertical end of the iron core 101, and the inner side of the second hollow guide ring 3 is uniformly provided with diversion holes.

[0026] Local working principle: The inner diameter of the second hollow guide ring 3 is 2-3cm larger than the outer diameter of the vertical end of the iron core 101. The diameter of the diversion holes opened on the inner side is 5-8mm, and they are arranged in a ring at 60° intervals. The total opening area accounts for 30% of the inner surface area of ​​the second hollow guide ring 3, ensuring that the airflow diffuses towards the iron core 101 at a uniform speed of 2-3m / s.

[0027] In this embodiment, the angle adjustment mechanism includes an upper annular mesh plate 11, a bimetallic plate 12, a lower annular mesh plate 13, a limiting ring 14, a first lifting rope 15, and a second lifting rope 16. The upper annular mesh plate 11 is horizontally fixed to the top of both sides of the insulator 106. The tops of the two sets of upper annular mesh plates 11 are attached to the bottom of the pressure block 108. The bottoms of the two sets of upper annular mesh plates 11 are vertically mounted with bimetallic plates 12 in a circular array. The bimetallic plates 12 are made of brass (thermal expansion coefficient 19×10). -6 / ℃) and Invar (coefficient of thermal expansion 1.5×10 -6 / ℃) welding, with a thickness of 0.5mm and a length of 10cm. The initial bending temperature of the bimetallic plate 12 is set to 55℃ (the upper limit of the normal operating temperature of the transformer). When the temperature exceeds this value, the flow guide plate adjustment is started. For every 10℃ increase in temperature, the tilt angle of the flow guide plate increases by 5°, corresponding to a 10° change in the tilt angle of the flow guide plate. Lower annular mesh plates 13 are rotatably mounted on both sides of the insulator 106 and below the bimetallic plate 12. The tops of the two sets of lower annular mesh plates 13 are fixedly connected to the bimetallic plate 12 at the bottom of the upper annular mesh plate 11. Limiting rings 14 are horizontally fixed below the lower annular mesh plates 13 and on both the inner and outer sides of the insulator 106. A first suspension rope 15 is evenly provided circumferentially on the side of the bottom of the lower annular mesh plate 13 away from the insulator 106. The first suspension rope 15 extends from the limiting ring 14 away from the insulator 106. The first suspension rope 15 passes through one side of the 6 and is slidably connected to the limiting ring 14. The bottom end of the first suspension rope 15 is fixedly connected to the bottom end of the multiple sets of second S-shaped guide plates 10. The bottom of the lower annular mesh plate 13 is uniformly provided with second suspension ropes 16 along the circumferential direction on the side near the insulator 106. The second suspension rope 16 passes through the side of the limiting ring 14 near the insulator 106 and is slidably connected to the limiting ring 14. The bottom end of the second suspension rope 16 is fixedly connected to the bottom end of the multiple sets of first S-shaped guide plates 8. The first suspension rope 15 and the second suspension rope 16 are made of 316L stainless steel wire rope with a diameter of 1mm and a breaking strength of ≥150N, which meets the maximum tensile force (approximately 50N) requirement when adjusting the guide plate. The sliding friction coefficient between the suspension rope and the limiting ring 14 is reduced to below 0.1 through a silicon-based lubricating coating to ensure that the adjustment resistance is ≤10N.

[0028] Local working principle: If the temperature continues to rise, the angle adjustment mechanism is activated. The bimetallic plate 12 bends due to the temperature rise, which drives the lower annular mesh plate 13 to rotate. The lower annular mesh plate 13 pulls the first S-shaped guide plate 8 and the second S-shaped guide plate 10 to rotate through the first suspension rope 15 and the second suspension rope 16, increasing their tilt angle. After the tilt angle of the guide plate increases, the amplitude of the airflow sinusoidal trajectory increases, the contact path is further extended, the lateral velocity component is enhanced, the turbulence intensity is increased again, and the cooling rate is accelerated. When the transformer temperature drops below the threshold, the bimetallic plate 12 returns to its initial shape, the guide plate resets to the vertical state under the action of gravity, the angle adjustment mechanism stops operating, the fan 109 automatically shuts down according to the temperature sensor signal, and the equipment returns to the initial operating state.

[0029] In this embodiment, the limiting ring 14 has a first sliding hole 1401 uniformly opened in the circumferential direction on the side away from the insulator 106, and the first suspension rope 15 passes through the inside of the first sliding hole 1401. The limiting ring 14 has a second sliding hole 1402 uniformly opened in the circumferential direction on the side close to the insulator 106, and the second suspension rope 16 passes through the inside of the second sliding hole 1402.

[0030] Local working principle: The diameter of the first sliding hole 1401 and the second sliding hole 1402 is 1.2mm, forming a 0.2mm gap with the suspension rope to avoid jamming.

[0031] In this embodiment, the surface of the limiting ring 14 is uniformly provided with through grooves 1403 in a ring array, and the through grooves 1403 are located between adjacent first sliding holes 1401.

[0032] Local working principle: The opening of the through groove 1403 can reduce the obstruction effect of the limiting ring 14 on the airflow.

[0033] In this embodiment, both the first S-shaped guide plate 8 and the second S-shaped guide plate 10 are made of polyetheretherketone (PEEK), and the surfaces of the first S-shaped guide plate 8 and the second S-shaped guide plate 10 are coated with a silicon-based nano-coating.

[0034] Local working principle: Polyetheretherketone (PEEK) has a heat distortion temperature of 343℃ and retains ≥90% of its elastic modulus at the long-term operating temperature of transformers (≤120℃), ensuring the structural stability of the guide plate. Its tensile strength reaches 100MPa, which can withstand the maximum stress (approximately 30MPa) generated by airflow impact. The SiO2 nano-coating prepared by chemical vapor deposition has a thickness of 50-100nm and a surface contact angle of 110°, achieving hydrophobic and oleophobic properties. The residual rate of salt particles under airflow scouring is reduced by 80%, and the surface roughness Ra≤0.2μm of the coating reduces the airflow resistance coefficient by 25% compared to the uncoated PEEK surface (Ra=1.0μm), ensuring that the guide plate does not increase additional wind resistance due to airflow disturbance.

[0035] In this embodiment, the shock absorption mechanism 17 includes a groove 1701, a shock absorption spring 1702, a fixing plate 1703, and a damper 1704. The groove 1701 is opened at the bottom of the four corners of the base 1. The inner bottom of the groove 1701 is vertically provided with a shock absorption spring 1702. The shock absorption spring 1702 is made of 60Si2Mn spring steel, with a diameter of 8mm, a free length of 10cm, 12 turns, and an elastic coefficient k=500N / cm. Under the rated load of the transformer (about 500kg), the compression is 10cm, which is within the linear range of elastic deformation. The bottom end of the damping spring 1702 is horizontally mounted with a fixing plate 1703. A damper 1704 is provided between the top of the fixing plate 1703 and the inner top of the groove 1701. The damper 1704 is hydraulic and has a damping coefficient c=200N・s / m. According to the vibration equation, it can reduce the vibration amplitude of 50Hz to 10% of the initial value within 2 cycles. The damper 1704 is located inside the damping spring 1702.

[0036] Local working principle: In the damping mechanism 17, the damping spring 1702 absorbs vibration energy through elastic deformation, and the damper 1704 attenuates the 50Hz vibration amplitude to 10% of the initial value within 2 cycles, reducing vibration during use.

[0037] In this embodiment, mounting holes 1705 are symmetrically provided at both ends of the fixing plate 1703, and rubber shock-absorbing pads are provided at the bottom of the mounting holes 1705.

[0038] Local working principle: The rubber vibration damping pad is made of neoprene rubber with a Shore hardness of 50A and a thickness of 5mm. In the frequency range of 10-100Hz, the vibration isolation efficiency reaches 70%-90%, especially the vibration isolation effect is significant for the low frequency impact (10-20Hz) when the fan 109 starts. When fixed through the mounting hole 1705, the bolt preload is controlled at 20-30N・m, so that the rubber pad is compressed to 3mm, which not only ensures the vibration damping effect, but also avoids elastic failure caused by overpressure.

[0039] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A three-dimensional wound transformer with an alloy core, comprising a base (1), an iron core (101) mounted on the top of the base (1), a lower clamp (102) located at the bottom end of the iron core (101), an upper clamp (103) fixed on the top of the iron core (101), a low-voltage coil (104) sleeved on the outside of the iron core (101), a high-voltage coil (105) sleeved on the outside of the low-voltage coil (104), a pad (107) located on the top of the lower clamp (102), a pressure block (108) located at the bottom of the upper clamp (103), an insulator (106) located between the low-voltage coil (104) and the high-voltage coil (105), and fans (109) located on both sides of the base (1). Its features are: Both ends of the top of the lower clamp (102) are provided with annular flow guiding mechanisms to uniformly guide the flow between the low-voltage coil (104) and the high-voltage coil (105); The insulator (106) is uniformly provided with a first support (7) and a second support (9) along the circumferential direction on both the inner and outer sides. The second support (9) is located vertically below the first support (7). The first support (7) and the second support (9) are staggered on the vertical surface of the insulator (106). A first S-shaped guide plate (8) is symmetrically rotated on the first support (7) on the inner and outer sides of the insulator (106). A second S-shaped guide plate (10) is symmetrically rotated on the second support (9) on the inner and outer sides of the insulator (106). The positions of adjacent first S-shaped guide plates (8) and second S-shaped guide plates (10) are opposite. An angle adjustment mechanism is provided on the inner top of the insulator (106) to simultaneously adjust the rotation angle of the first S-shaped guide plate (8) and the second S-shaped guide plate (10).

2. A three-dimensional wound core transformer of an alloy core according to claim 1, characterized by: The annular flow guiding mechanism includes a first hollow flow guiding ring (2), a second hollow flow guiding ring (3), an exhaust port (4), a limiting groove (5), and an air inlet (6). The first hollow flow guiding ring (2) is fixed to the top of the lower clamp (102). The iron core (101) passes through the inside of the first hollow flow guiding ring (2). The outer diameter of the first hollow flow guiding ring (2) is larger than the outer diameter of the high-voltage coil (105). The second hollow flow guiding ring (3) is horizontally arranged on the inner side of the first hollow flow guiding ring (2). The inside of the first hollow flow guiding ring (2) is connected to the second hollow flow guiding ring. The ring (3) is internally connected. The top of the second hollow guide ring (3) is evenly provided with exhaust ports (4) in a ring array. The exhaust ports (4) are located below the gap between the low-voltage coil (104) and the high-voltage coil (105). The second hollow guide ring (3) and the first hollow guide ring (2) are provided with limiting grooves (5) that cooperate with the pad block (107). Both ends of the bottom of the first hollow guide ring (2) are provided with air inlets (6). The output end of the fan (109) is connected to the interior of the first hollow guide ring (2) through the air inlet (6).

3. A three-dimensional wound core transformer of an alloy core according to claim 2, characterized by: The exhaust port (4) is rectangular in shape, and the length of the exhaust port (4) is greater than the distance between the low-voltage coil (104) and the high-voltage coil (105).

4. The alloy core three-dimensional wound transformer according to claim 2, wherein: The inner diameter of the second hollow guide ring (3) is larger than the outer diameter of the vertical end of the iron core (101), and the inner side of the second hollow guide ring (3) is uniformly provided with diversion holes.

5. The three-dimensional wound core transformer of claim 1, wherein: The angle adjustment mechanism includes an upper annular mesh plate (11), a bimetallic plate (12), a lower annular mesh plate (13), a limiting ring (14), a first lifting rope (15), and a second lifting rope (16). The upper annular mesh plate (11) is horizontally fixed to the top of both sides of the insulator (106). The tops of the two sets of upper annular mesh plates (11) are attached to the bottom of the pressure block (108). The bottoms of the two sets of upper annular mesh plates (11) are vertically installed in a circular array with bimetallic plates (12). The lower annular mesh plates (13) are rotatably installed on both sides of the insulator (106) and below the bimetallic plates (12). The tops of the two sets of lower annular mesh plates (13) are fixedly connected to the bimetallic plates (12) at the bottom of the upper annular mesh plates (11). The bottoms of the lower annular mesh plates (13) and the inner and outer sides of the insulator (106) are water-resistant. A fixed limiting ring (14) is provided. A first suspension rope (15) is evenly provided circumferentially on the side of the bottom of the lower annular mesh plate (13) away from the insulator (106). The first suspension rope (15) passes through the side of the limiting ring (14) away from the insulator (106) and is slidably connected to the limiting ring (14). The bottom end of the first suspension rope (15) is fixedly connected to the bottom end of multiple sets of second S-shaped guide plates (10). A second suspension rope (16) is evenly provided circumferentially on the side of the bottom of the lower annular mesh plate (13) close to the insulator (106). The second suspension rope (16) passes through the side of the limiting ring (14) close to the insulator (106) and is slidably connected to the limiting ring (14). The bottom end of the second suspension rope (16) is fixedly connected to the bottom end of multiple sets of first S-shaped guide plates (8).

6. A three-dimensional wound core transformer of an alloy core according to claim 5, characterized by: The limiting ring (14) has a first sliding hole (1401) evenly opened in the circumferential direction on the side away from the insulator (106), and the first suspension rope (15) passes through the inside of the first sliding hole (1401). The limiting ring (14) has a second sliding hole (1402) evenly opened in the circumferential direction on the side close to the insulator (106), and the second suspension rope (16) passes through the inside of the second sliding hole (1402).

7. A three-dimensional wound core transformer of an alloy core according to claim 6, characterized by: The surface of the limiting ring (14) is uniformly provided with through grooves (1403) in a ring array, and the through grooves (1403) are located between adjacent first sliding holes (1401).

8. The alloy core three-dimensional wound transformer according to claim 1, characterized in that: Both the first S-shaped guide plate (8) and the second S-shaped guide plate (10) are made of polyetheretherketone (PEEK), and the surfaces of the first S-shaped guide plate (8) and the second S-shaped guide plate (10) are coated with a silicon-based nano-coating.

9. A three-dimensional wound transformer with an alloy core according to claim 1, characterized in that: The damping mechanism (17) includes a groove (1701), a damping spring (1702), a fixing plate (1703), and a damper (1704). The groove (1701) is located at the bottom of the four corners of the base (1). The bottom of the groove (1701) is vertically provided with a damping spring (1702). The bottom of the damping spring (1702) is horizontally installed with a fixing plate (1703). The top of the fixing plate (1703) and the top of the groove (1701) are provided with a damper (1704), and the damper (1704) is located inside the damping spring (1702).

10. A three-dimensional wound transformer with an alloy core according to claim 9, characterized in that: The mounting plate (1703) has symmetrical mounting holes (1705) at both ends, and the bottom of the mounting holes (1705) is provided with rubber shock-absorbing pads.

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