Three-phase coherent three-dimensional roll core transformer

Abstract

The present application relates to the technical field of dry-type transformer, and more particularly to a three-phase dry-type three-dimensional roll iron core transformer, which comprises a protective shell, the protective shell is connected with circumferentially distributed support sleeves, the support sleeves are arranged obliquely, the support sleeves are connected with sliding rods through sliding connection, all the sliding rods are jointly connected with a support platform through ball connection, circumferentially distributed first elastic members are arranged between the support platform and the protective shell, the protective shell is provided with symmetrically distributed clamping pieces arranged in an upper and lower manner, and circumferentially distributed coil modules are arranged between the symmetrically distributed clamping pieces. The support sleeves are circumferentially arranged and slide with the sliding rods, the support platform and the first elastic members jointly bear, the shaking amplitude of the platform is weakened, the support stability of the upper structure is improved, and the oblique arrangement of the support sleeves is used to generate a reverse restoring torque when one side of the sliding rod is pressed and the other side of the sliding rod is pulled during shaking of the support platform, so that the support stability of multi-directional shaking resistance is improved.

Description

Technical Field

[0001] This invention relates to the field of dry-type transformer technology, and more particularly to a three-phase dry-type three-dimensional wound core transformer. Background Technology

[0002] Three-phase dry-type three-dimensional wound core transformers, with their compact structure and stable operating efficiency, are widely used in various onshore power distribution systems. As the power distribution needs of marine vessels and offshore platforms continue to grow, their application scenarios are gradually extending to special offshore operating conditions. In the marine environment, affected by continuous wave fluctuations and resonance of ship equipment, transformers are subjected to frequent, multi-directional reciprocating vibrations over long periods. These vibrations are further compounded by instantaneous strong lateral impacts from ship berthing collisions and large wave slams. The frequency, direction, and amplitude of these vibrations fluctuate greatly, resulting in complex overall operating conditions.

[0003] Existing dry-type transformers typically employ conventional axial elastic support structures (such as hydraulic dampers) to cope with vibration, relying on the deformation of spring-like elastic components to absorb some of the vibration energy, thereby achieving a basic axial buffering effect. However, the damping form of this type of buffer structure is singular, only able to buffer the energy of vibration in the vertical direction, unable to quickly dissipate the transmission of reciprocating vibrations in other directions, and also unable to withstand the load from instantaneous strong impacts, resulting in a significant limitation in actual buffering effectiveness. Long-term operation under such conditions leads to lateral forces being directly transmitted to the cabinet and internal core and windings, causing loose connecting bolts, bent piston rods, uneven wear and oil leakage of sealing rings, and fatigue of springs and rubber gaskets. Furthermore, the difficulty of maintenance in marine environments results in low operational reliability. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, this application provides a three-phase dry-type three-dimensional wound core transformer.

[0005] The technical solution is as follows: A three-phase dry-type three-dimensional wound core transformer includes a protective shell. Inside the protective shell, circumferentially distributed support sleeves are ball-jointed. The support sleeves are inclined and slidably connected to sliding rods. All the sliding rods are ball-jointed to a support platform. A circumferentially distributed first elastic element is provided between the support platform and the protective shell. Inside the protective shell, symmetrically distributed clamping members are located above the support platform. The outer sides of the symmetrically distributed clamping members are threadedly connected to circumferentially distributed connecting screws. Symmetrically distributed and circumferentially distributed pressing members are provided on the clamping members. Circumferentially distributed coil modules are jointly arranged between the symmetrically distributed clamping members. Each symmetrically distributed pressing member corresponds to one of the coil modules, and the pressing member is used to fix the corresponding coil module. A connecting mechanism is provided inside the protective shell to connect all the support sleeves. A compensation mechanism is provided on each coil module to apply torque to the remaining coil modules. The compensation mechanism corresponds one-to-one with the support sleeve.

[0006] Preferably, the symmetrically distributed clamps are connected to a stabilizing screw at their center by a common thread, and the central axes of all the support sleeves intersect, with the intersection point located on the axis of the stabilizing screw between the symmetrically distributed clamps.

[0007] Preferably, the communication mechanism includes: an oil storage shell, fixedly connected inside the protective shell and located below the support platform, with a first pipe and a second pipe connected to the support sleeve, both the first pipe and the second pipe being connected to the oil storage shell; a piston plate, slidably connected inside the oil storage shell, with a second elastic element provided between the two, and the piston plate being located above all the first pipe and the second pipe.

[0008] Preferably, the flow area of ​​the first tube is smaller than that of the second tube, and both the first tube and the second tube are equipped with one-way valves, with the flow directions of the one-way valves on the first tube and the second tube being opposite.

[0009] Preferably, the compensation mechanism includes: a sliding frame slidably connected to the corresponding coil module, with an elastic column between them; a push plate fixed to the sliding frame, with a heat dissipation pad on the side of the push plate near the corresponding coil module, and the heat dissipation pad on the push plate being in contact with the corresponding coil module; a telescopic push rod fixed to the support platform, with a pressing rod fixed to the telescopic end of the telescopic push rod, the pressing rod being used to press the sliding frame; and a third tube connected to the fixed part of the telescopic push rod, and the third tube being connected to the corresponding support sleeve.

[0010] Preferably, the opposite sides of all the thrust plates are in contact with each other.

[0011] Preferably, the sliding rod consists of a piston part and a connecting part, the piston part and the connecting part are slidably connected, the piston part is slidably connected to the corresponding support sleeve, the connecting part is ball-jointed with the support platform, and a collapsible collar is provided between the piston part and the connecting part for limiting the piston part and the corresponding connecting part.

[0012] Preferably, the symmetrically distributed clamps are provided with circumferentially distributed mounting shells on opposite sides, each mounting shell corresponding to a coil module. Each mounting shell is slidably connected to a pressing ring, which is used to squeeze the corresponding coil module. A liquid reservoir is provided between the mounting shell and the corresponding pressing ring, and a symmetrically distributed third elastic element is provided between the pressing element and the corresponding mounting shell.

[0013] Preferably, a flexible bladder is provided between the pressing member and the corresponding mounting shell, and a connecting tube is connected to the flexible bladder, which is connected to the corresponding liquid storage bladder.

[0014] Preferably, the pressing ring is provided with circumferentially distributed through holes.

[0015] The beneficial effects of this invention are as follows: By circumferentially arranging the support sleeve and sliding it against the sliding rod, the support platform and the first elastic element work together to bear the load, which can disperse multi-directional swaying loads, reduce the swaying amplitude of the platform, and improve the support stability of the upper structure. Furthermore, by utilizing the inclined setting of the support sleeve, when the support platform sways, the sliding rod on one side is compressed and the sliding rod on the other side is stretched, which automatically generates a reverse restoring torque, effectively widening the support bottom surface, suppressing the tendency to tip over, and improving the multi-directional anti-sway support stability.

[0016] This invention employs a first pipe and a second pipe with different flow areas, combined with a reverse one-way valve, and uses a piston plate and elastic element inside the oil reservoir to regulate oil pressure, thereby slowing down the oil discharge speed of the support sleeve on the pressure side, increasing tilting resistance, enhancing the buffering effect, and improving support stability.

[0017] This invention uses hydraulic pressure from the support sleeve to drive a telescopic push rod via a third pipe, which in turn pushes the extrusion rod to move the sliding frame and the reverse push plate. Adjacent reverse push plates transmit force to each other, applying a swaying reverse thrust to the coil module, thus counteracting the swaying tendency of the coil module and improving the operational stability of the coil module.

[0018] This invention employs a segmented structure of a piston part and a connecting part in the sliding rod, with a collapsible collar in the middle for limiting. When encountering a sudden strong impact, the collapsible collar plastically deforms to absorb energy, limiting the peak impact, protecting the rod and sealing structure, and improving the equipment's impact resistance.

[0019] This invention uses a pressing ring to clamp the coil module through surface contact. The reservoir and flexible bladder transmit oil pressure through a connecting pipe. With the help of a third elastic element for buffering, the clamping stress is dispersed and the clamping force is adaptively adjusted to avoid concentrated stress damaging the coil module and improve clamping reliability. At the same time, the mutual flow of oil between the reservoir and flexible bladder prevents the reservoir, flexible bladder and third elastic element from being subjected to a fixed and single compressive force for a long time, thus avoiding plastic deformation and ensuring the normal use of all three. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the components inside the protective shell of the present invention; Figure 3 This is a three-dimensional structural diagram of the support platform and clamping components of the present invention; Figure 4This is a three-dimensional structural diagram of the clamp and coil module of the present invention; Figure 5 This is a three-dimensional structural diagram of the piston plate and sliding frame of the present invention; Figure 6 This is a three-dimensional structural diagram of the push plate and the collapsible collar of the present invention; Figure 7 This is a three-dimensional structural diagram of the coil module and mounting shell of the present invention; Figure 8 This is a top view of the three-dimensional structure of the sliding frame and the push plate of the present invention; Figure 9 This is a three-dimensional structural diagram of the clamp and mounting shell of the present invention; Figure 10 This is a three-dimensional structural diagram of the liquid storage bladder and flexible bladder of the present invention; Figure 11 This is an exploded three-dimensional view of the components at the mounting shell of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1-protective shell, 2-support sleeve, 201-first tube, 202-second tube, 203-third tube, 3-sliding rod, 301-piston part, 302-connecting part, 4-supporting platform, 41-first elastic element, 5-clamping piece, 6-connecting screw, 7-pressing piece, 8-coil module, 9-oil reservoir, 10-piston plate, 101-second elastic element, 11-sliding frame, 12-reverse thrust plate, 13-telescopic push rod, 14-compression rod, 15-collapse collar, 21-mounting shell, 22-pressing ring, 23-liquid reservoir, 31-flexible bladder, 32-third elastic element, 33-connecting tube. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Example 1

[0023] Three-phase dry-type three-dimensional wound core transformer, such as Figures 1-8As shown, the device includes a protective housing 1, which is an existing piece of equipment. Its side walls are equipped with ventilation holes, dust filters, and grounding terminals. The surface is coated with an anti-salt spray coating, and an internal temperature controller is installed to sense the transformer's temperature. Inside the protective housing 1, three circumferentially distributed support sleeves 2 are ball-jointed. The support sleeves 2 are inclined and slidably connected to sliding rods 3. Hydraulic oil is stored between the support sleeves 2 and their corresponding sliding rods 3. All the sliding rods 3 are ball-jointed to a support platform 4, on which circumferentially distributed cooling fans are installed for cooling the transformer. For heat dissipation, three circumferentially distributed first elastic elements 41, which are springs, are provided between the support platform 4 and the protective shell 1 to support the support platform 4. Inside the protective shell 1, two symmetrically distributed clamping members 5 are located on the upper side of the support platform 4. The lower clamping member 5 is fixed to the support platform 4 by bolts. The outer sides of the two clamping members 5 are threaded with three circumferentially distributed connecting screws 6, which are existing structures for fixing the two clamping members 5 (also known as pull screws). The middle of the symmetrically distributed clamping members 5 is threaded with a stabilizing screw (such as...). Figure 4 and Figure 7 As shown), all the support sleeves 2 are in an inclined state, and the central axes of all the support sleeves 2 intersect at the intersection point on the stabilizing screw between the two clamps 5. Six symmetrically arranged pressing members 7 are provided on the clamps 5, each consisting of a pressure plate, bolts, and two nuts. The two nuts determine the position of the pressing member 7 relative to the corresponding clamp 5, thereby ensuring that the pressing member 7 can apply a stable clamping force to the coil module 8. In this embodiment, the pressure plate is an existing pad, and the coil module 8 is circumferentially distributed between the two clamps 5. The coil module 8 has an existing structure. 8 is mainly composed of a coiled iron core, a high-voltage winding, a low-voltage winding, and an epoxy resin casting shell. The coil module 8 and the clamp 5 are also equipped with existing components such as high-voltage terminals, low-voltage terminals, copper busbars, and insulators (not shown in the figure). Two pressing parts 7 correspond one-to-one with the coil module 8 and are used to fix the corresponding coil module 8. A connecting mechanism is provided inside the protective shell 1 to connect all the support sleeves 2. A compensation mechanism is provided on the coil module 8, which corresponds one-to-one with the support sleeve 2 and is used to apply torque to the remaining coil modules 8.

[0024] like Figure 2 , Figure 3 and Figure 5As shown, the connecting mechanism includes: an oil reservoir 9, fixedly connected inside the protective shell 1 and located below the support platform 4. The height of the oil reservoir 9 will not affect the swing of the support platform 4. A first pipe 201 and a second pipe 202 are connected to the support sleeve 2, and both the first pipe 201 and the second pipe 202 are connected to the oil reservoir 9; a piston plate 10, which is slidably connected inside the oil reservoir 9 in a sealed manner, and a second elastic element 101 is provided between the two. The second elastic element 101 is a spring. The second elastic element 101 is in a charged state when the hull is stable. Hydraulic oil is stored between the lower side of the piston plate 10 and the oil reservoir 9. The piston plate 10 is located above all the first pipes 201 and the second pipes 202; the first pipe 201... The flow area of ​​pipe 01 is smaller than that of pipe 202. Both pipe 201 and pipe 202 are equipped with check valves, and the flow directions of the check valves on pipe 201 and pipe 202 are opposite. The check valve on pipe 201 is used to allow the hydraulic oil in the corresponding support sleeve 2 to flow into the oil reservoir 9 (outlet pipe), and the check valve on pipe 202 is used to allow the hydraulic oil in the oil reservoir 9 to flow into the corresponding support sleeve 2 (inlet pipe). By setting the flow area of ​​pipe 201 and pipe 202, the hydraulic oil in the corresponding support sleeve 2 can slowly enter the oil reservoir 9, so that the side of the support platform 4 close to the support sleeve 2 can slowly tilt downward.

[0025] like Figures 1-3 and Figures 5-8As shown, the compensation mechanism includes: a sliding frame 11, slidably connected to the corresponding coil module 8, the sliding frame 11 having a Y-shaped structure, and each sliding frame 11 having a first inclined surface on its back side; an elastic column being provided between the sliding frame 11 and the corresponding coil module 8; a push plate 12, fixedly connected to the sliding frame 11, the push plate 12 being an arc-shaped plate; a heat dissipation pad being provided on the side of the push plate 12 near the corresponding coil module 8, and the heat dissipation pad on the push plate 12 being in contact with the corresponding coil module 8; the heat dissipation pad using silicone rubber as a flexible matrix, and filling its matrix with high thermal conductivity filler to obtain heat dissipation capacity, wherein the specific filler can be ceramic filler (aluminum nitride, alumina, etc.) or carbon-based filler (graphene, carbon nanotubes, etc.); the heat dissipation pad is used to absorb the heat emitted by the corresponding coil module 8, ensuring that the coil module 8 can operate within the normal temperature range; the opposite sides of all the push plates 12 are in contact with each other, and each push plate 12 has... It will be in contact with the other two push plates 12. When one of the push plates 12 moves towards the axis of the stabilizing screw, it will apply a thrust to the other two push plates 12. The telescopic push rod 13 is fixed to the support platform 4. The telescopic end of the telescopic push rod 13 is fixed to the extrusion rod 14. The upper side of the extrusion rod 14 is provided with a second inclined surface. The second inclined surface is in contact with the corresponding first inclined surface. The second inclined surface of the extrusion rod 14 is used to extrude the first inclined surface of the sliding frame 11, so that the corresponding sliding frame 11 moves towards the axis of the stabilizing screw. The third tube 203 is connected to the fixed part of the telescopic push rod 13. The third tube 203 is connected to the corresponding support sleeve 2. The flow area of ​​the third tube 203 is smaller than the flow area of ​​the second tube 202 and larger than the flow area of ​​the corresponding first tube 201. When the hydraulic oil in the support sleeve 2 is squeezed out, some of the hydraulic oil will enter the fixed part of the corresponding telescopic push rod 13 through the third tube 203.

[0026] The working principle of this embodiment: During the ship's movement, the hull will sway due to waves or wind. However, this swaying is not limited to the axial direction; it will also include side-to-side or back-and-forth rolling. This swaying is transmitted to the protective shell 1. Taking back-and-forth rolling as an example, when the hull tilts backward, the protective shell 1 will cause the support platform 4 to tilt backward. The front of the support platform 4 is higher than its rear side. Under the weight of all the components on the support platform 4, it will press down on the sliding rod 3 on the rear side. The sliding rod 3 slides downward along the corresponding support sleeve 2 and squeezes the hydraulic oil inside the support sleeve 2. The corresponding portion inside the support sleeve 2... Hydraulic oil flows into the oil reservoir 9 through the corresponding first pipe 201. During this process, the support platform 4 pulls the two sliding rods 3 on the front side. The sliding rods 3 slide backward and upward, and a negative pressure is formed in the two support sleeves 2 on the front side. This causes some of the hydraulic oil in the oil reservoir 9 to flow into the corresponding support sleeves 2 through the two second pipes 202 on the front side. At the same time, the support platform 4 compresses the first elastic element 41 on the rear side and stretches the two first elastic elements 41 on the front side. The movement of the support platform 4 is buffered by the first elastic elements 41 and the flow of hydraulic oil, ensuring the stability of all the coil modules 8 on its upper side.

[0027] Since the flow area of ​​the first pipe 201 is smaller than that of the second pipe 202, the sliding speed of the rear sliding rod 3 is reduced by setting the flow area, thereby further resisting the tendency of the support platform 4 to tilt backward, reducing the speed of the support platform 4 to tilt backward, and making the coil module 8 on its upper side more stable. During the flow of hydraulic oil, since the amount of hydraulic oil entering the oil reservoir 9 is less than the amount of hydraulic oil discharged, the piston plate 10 moves downward under the action of the second elastic element 101, ensuring the balance of hydraulic oil pressure in the oil reservoir 9.

[0028] During the swaying of the support platform 4, by installing all the support sleeves 2 at an angle, when swaying laterally, all the angled support sleeves 2 will act like diagonal braces, with one side compressed and the other side stretched, automatically generating a counter-horizontal force to support the support platform 4 towards the center, and the horizontal component of the angled support sleeves 2 will push outward; at the same time, the restoring torque will increase with the increase of the angle of inclination. The greater the angle of inclination, the stronger the ability to suppress rollover and restore the support platform. Therefore, when the hull sways laterally, the angled support sleeves 2 can significantly suppress the rollover tendency of all the coil modules 8 above.

[0029] As the rear sliding rod 3 moves downward, some hydraulic oil inside the support sleeve 2 flows into the fixed part of the corresponding telescopic push rod 13 through the third pipe 203. The telescopic end of the rear telescopic push rod 13 extends and drives the corresponding pressing rod 14 to move upward. The pressing rod 14 pushes the first inclined surface of the corresponding sliding frame 11 through its second inclined surface, causing the sliding frame 11 to tend to move forward. The sliding frame 11 drives the corresponding counter-push plate 12 to move, so that the rear counter-push plate 12 applies a thrust to the two front counter-push plates 12. The two front counter-push plates 12 squeeze forward through their heat dissipation pads. Pressing the corresponding coil module 8 causes the two front coil modules 8 to tend to move forward, thereby reducing the tendency of the two front coil modules 8 to tilt backward due to the hull swaying and ensuring the stability of the two front coil modules 8. During this process, the rear sliding frame 11 will push the rear coil module 8 forward through its elastic column, so that the rear coil module 8 also has a tendency to move forward, thereby reducing the probability of the rear coil module tilting backward. Combined with the movement of the sliding frame 11 and the thrust plate 12, a counter-thrust force in the direction of hull swaying is applied to the corresponding coil module 8, thereby ensuring the stability of the coil module.

[0030] After the hull returns to stability, all the first elastic elements 41 drive the support platform 4 to reset, restoring it to a horizontal state. During this process, the support platform 4 presses down on the two sliding rods 3 on the front side and pulls the sliding rod 3 on the rear side, causing some of the hydraulic oil in the oil reservoir 9 and the hydraulic oil in the rear telescopic push rod 13 to flow back into the rear support sleeve 2. The telescopic end of the rear telescopic push rod 13 moves downward and drives the compression rod 14 to move downward. Under the action of the corresponding elastic column, the sliding frame 11 drives the corresponding thrust plate 12 to move backward and reset. At the same time, some of the hydraulic oil in the two support sleeves 2 on the front side flows back into the oil reservoir 9, increasing the amount of hydraulic oil in the oil reservoir 9 and pushing the piston plate 10 to move upward. The piston plate 10 compresses the corresponding second elastic element 101 until the support platform 4 returns to a horizontal state, and all the support sleeves 2, sliding rods 3, and thrust plates 12 are reset.

[0031] If the hull sways again, repeat the above buffering process. At the same time, for tilting of the hull in different directions, the support platform 4 should be squeezed or stretched according to the above principle to make the corresponding sliding rod 3, and repeat the above oil flow process and the movement process of the thrust plate 12. Example 2

[0032] The marine environment not only experiences continuous vibrations but also transient high-intensity impacts, such as wave pounding and berthing collisions. Under such transient impacts, the piston rod in the existing buffer structure will bend due to the strong impact, and the seals will also be damaged. Based on this, a method for buffering and relieving transient impacts is proposed.

[0033] Based on Example 1, such as Figure 5 and Figure 6 As shown, the sliding rod 3 consists of a piston part 301 and a connecting part 302. The piston part 301 and the connecting part 302 are slidably connected. A retaining ring is provided inside the connecting part 302 to limit the piston part 301. This retaining ring prevents the piston part 301 from separating from the connecting part 302 when the sliding rod 3 slides upward along the support sleeve 2. The piston part 301 is slidably connected to the corresponding support sleeve 2, and the connecting part 302 is ball-jointed with the support platform 4. A collapsible collar 15 is provided between the piston part 301 and the connecting part 302. The collapsible collar 15 is a replaceable structure and is used to limit the piston part 301. 1. The piston part 301 and the corresponding connecting part 302 are limited. Under normal circumstances, the piston part 301 and the connecting part 302 cannot move relative to each other under the limiting action of the collapsible collar 15. That is, the piston part 301 and the connecting part 302 can be regarded as a complete piston rod. During normal buffering, it can slide smoothly in the corresponding support sleeve 2. When the impact suddenly increases, the collapsible collar 15 will undergo axial plastic deformation to absorb the impact energy and limit the peak impact force transmitted to the support sleeve 2 and the sliding rod 3. After the collapsible collar 15 is damaged by impact, it can be replaced when the crew inspects or repairs it. Example 3

[0034] Research has found that existing dry-type transformers use bolts fixed in position on the clamps to press against the insulating pads that contact the coil module, thereby using the insulating pads to clamp and fix the coil module. However, the insulating pads are relatively dispersed, which can easily cause the coil module to be subjected to concentrated stress during the clamping process, which can damage the coil module or make it unable to be stably fixed. Moreover, in the environment of continuous swaying at sea, the concentrated stress is even more obvious.

[0035] Based on Example 2, such as Figure 2 , Figure 3 , Figure 7 and Figures 9-11 As shown, three circumferentially distributed mounting shells 21 are provided on opposite sides of the two clamps 5. Each mounting shell 21 corresponds to a coil module 8. A pressing ring 22 is slidably connected inside the mounting shell 21. The pressing ring 22 is in surface contact with the corresponding coil module 8, covering the entire end face of the coil module 8, thereby reducing the concentrated stress on the coil module 8. An annular groove is provided inside the pressing ring 22, allowing the heat inside the coil module 8 to diffuse into the annular groove. The pressing ring 22 is used to compress the corresponding coil module 8. A liquid reservoir 23 is provided between the mounting shell 21 and the corresponding pressing ring 22. The liquid reservoir 23 is filled with hydraulic oil and is used to control the compressive force applied by the pressing ring 22, ensuring uniform force distribution. The pressing ring 22 is provided with circumferentially distributed through holes, all of which communicate with the aforementioned annular groove, allowing the heat of the coil module 8 to be released through the through holes and the annular groove.

[0036] like Figures 9-11 As shown, two symmetrically distributed third elastic elements 32 are provided between the pressing element 7 and the corresponding mounting shell 21. The third elastic element 32 is a spring. The elastic coefficient of the third elastic element 32 located on the lower side of the coil module 8 is greater than that of the third elastic element 32 located on the upper side of the coil module 8. This setting ensures that the third elastic element 32 located on the lower side can resist the gravity of the corresponding coil module 8, thereby giving it a buffer function.

[0037] During the transformer assembly process, all coil modules 8 are placed on the lower clamp 5, and then the upper clamp 5 is placed on all coil modules 8. The two clamps 5 are fixed by three connecting screws 6 and stabilizing screws, and the two clamps 5 are brought closer to each other. During this process, the clamps 5 press against the corresponding mounting shell 21 through the corresponding third elastic element 32, and at the same time, the mounting shell 21 presses against the corresponding pressing ring 22 through the corresponding liquid reservoir 23, so that the upper and lower pressing rings 22 apply clamping force to the corresponding coil module 8, thereby fixing the corresponding coil module 8.

[0038] When the hull sways, the hull will cause the protective shell 1 to sway synchronously. At this time, the swaying of the protective shell 1 will be transmitted to the coil module 8 through a series of structures, causing the coil module 8 to sway up and down. During this process, the third elastic element 32 will buffer the swaying of the corresponding coil module 8, thereby reducing the swaying amplitude of the coil module and ensuring the stability of the coil module 8. At the same time, the third elastic element 32 can also reduce the reverse swaying impact force of the coil module 8 on the corresponding pressing element 7, reducing the probability of damage to the pressing element 7 and the corresponding clamping element 5 due to the swaying impact force, and ensuring the stability of the coil module 8. Example 4

[0039] Based on Example 3, such as Figures 9-11As shown, a flexible bladder 31 is provided between the pressing component 7 and the corresponding mounting shell 21. The flexible bladder 31 is filled with hydraulic oil, and a connecting pipe 33 is connected to the flexible bladder 31. The connecting pipe 33 is connected to the corresponding liquid storage bladder 23. During the operation of the transformer, when the transformer vibrates vertically due to the swaying of the ship, the overall vibration of the transformer will be transmitted to the coil module 8, causing the coil module 8 to vibrate up and down. At this time, the coil module 8 presses the corresponding pressing ring 22, and the pressing ring 22 will float up and down. The pressing ring 22 will press the corresponding liquid storage bladder 23, and the hydraulic oil inside the liquid storage bladder 23 will flow into the corresponding flexible bladder 23 through the connecting pipe 33. Within the bladder 31, the internal pressure of the corresponding flexible bladder 31 increases, causing the flexible bladder 31 to deform. This changes the pressure state of the flexible bladder 31, preventing plastic deformation caused by long-term exposure to a single and continuous compressive force. This ensures the usability of the flexible bladder 31. During the deformation of the flexible bladder 31, the pressing member 7 and the mounting shell 21 simultaneously change the compressive force on the corresponding third elastic member 32, causing the third elastic member 32 to deform synchronously. This reduces the probability of plastic deformation of the third elastic member 32, ensuring the buffering effect of the third elastic member 32 and the flexible bladder 31 on the vibration of the corresponding coil module 8.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A three-phase dry-type three-dimensional wound core transformer, characterized in that, The device includes a protective shell (1), inside which are ball-jointed a circumferentially distributed support sleeve (2), which is inclined, and a sliding rod (3) is slidably connected to the support sleeve (2). All the sliding rods (3) are ball-jointed to a support platform (4). A circumferentially distributed first elastic element (41) is provided between the support platform (4) and the protective shell (1). Inside the protective shell (1), on the upper side of the support platform (4), are symmetrically distributed clamps (5). The outer sides of the symmetrically distributed clamps (5) are threaded together with circumferentially distributed connecting screws (6). The clamp (5) is provided with symmetrical and circumferentially distributed pressing parts (7). The symmetrically distributed clamps (5) are provided with circumferentially distributed coil modules (8). The symmetrically distributed pressing parts (7) correspond one-to-one with the coil modules (8), and the pressing parts (7) are used to fix the corresponding coil modules (8). The protective shell (1) is provided with a connecting mechanism for connecting all the support sleeves (2). The coil modules (8) are provided with a compensation mechanism for applying torque to the remaining coil modules (8). The compensation mechanism corresponds one-to-one with the support sleeves (2).

2. The three-phase dry-type three-dimensional wound core transformer according to claim 1, characterized in that, The symmetrically distributed clamps (5) are connected by a common threaded screw in the middle. The central axes of all the support sleeves (2) intersect and the intersection point is located on the axis of the stabilizing screw between the symmetrically distributed clamps (5).

3. The three-phase dry-type three-dimensional wound core transformer according to claim 1, characterized in that, The connecting mechanism includes: An oil storage shell (9) is fixed inside the protective shell (1) and located below the support platform (4). A first pipe (201) and a second pipe (202) are connected to the support sleeve (2). Both the first pipe (201) and the second pipe (202) are connected to the oil storage shell (9). A piston plate (10) is slidably connected to the oil reservoir (9), and a second elastic element (101) is provided between them. The piston plate (10) is located above all the first tubes (201) and the second tubes (202).

4. The three-phase dry-type three-dimensional wound core transformer according to claim 3, characterized in that, The flow area of ​​the first tube (201) is smaller than that of the second tube (202). Both the first tube (201) and the second tube (202) are equipped with check valves, and the flow directions of the check valves on the first tube (201) and the second tube (202) are opposite.

5. The three-phase dry-type three-dimensional wound core transformer according to claim 1, characterized in that, The compensation mechanism includes: The sliding frame (11) is slidably connected to the corresponding coil module (8), and an elastic column is provided between the two; A push plate (12) is fixed to the sliding frame (11). A heat dissipation pad is provided on the side of the push plate (12) close to the corresponding coil module (8), and the heat dissipation pad on the push plate (12) is in contact with the corresponding coil module (8). Telescopic push rod (13) is fixedly connected to the support platform (4). The telescopic end of the telescopic push rod (13) is fixedly connected to a pressing rod (14), which is used to press the sliding frame (11). The third tube (203) is connected to the fixed part of the telescopic push rod (13), and the third tube (203) is connected to the corresponding support sleeve (2).

6. The three-phase dry-type three-dimensional wound core transformer according to claim 5, characterized in that, All of the said thrust plates (12) are in contact with each other on opposite sides.

7. The three-phase dry-type three-dimensional wound core transformer according to claim 1, characterized in that, The sliding rod (3) is composed of a piston part (301) and a connecting part (302). The piston part (301) and the connecting part (302) are slidably connected. The piston part (301) is slidably connected to the corresponding support sleeve (2). The connecting part (302) is ball-jointed with the support platform (4). A collapsible collar (15) is provided between the piston part (301) and the connecting part (302). The collapsible collar (15) is used to limit the piston part (301) and the corresponding connecting part (302).

8. The three-phase dry-type three-dimensional wound core transformer according to claim 1, characterized in that, The clamps (5) are symmetrically distributed, and each side is provided with a circumferentially distributed mounting shell (21). The mounting shell (21) corresponds to the coil module (8) one by one. The mounting shell (21) is slidably connected with a pressing ring (22). The pressing ring (22) is used to squeeze the corresponding coil module (8). A liquid reservoir (23) is provided between the mounting shell (21) and the corresponding pressing ring (22). A third elastic member (32) is symmetrically distributed between the pressing member (7) and the corresponding mounting shell (21).

9. The three-phase dry-type three-dimensional wound core transformer according to claim 8, characterized in that, A flexible bladder (31) is provided between the pressing member (7) and the corresponding mounting shell (21), and a connecting tube (33) is connected to the flexible bladder (31), which is connected to the corresponding liquid storage bladder (23).

10. The three-phase dry-type three-dimensional wound core transformer according to claim 8, characterized in that, The pressing ring (22) is provided with circumferentially distributed through holes.

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