A noise reduction type dry-type transformer

Abstract

This invention relates to the field of transformer technology, specifically disclosing a noise-reducing dry-type transformer, including a base, a receiving groove on the top of the base, a lifting plate inside the receiving groove, a housing fixedly connected to the top of the lifting plate, a door hinged to one side of the housing, a dry-type transformer threadedly connected inside the housing, a fixed seat fixedly connected to one side of the base, a fire extinguishing component installed on the top of the fixed seat, a first shock-absorbing component installed inside the base, and second shock-absorbing components symmetrically installed at the bottom of the receiving groove. This invention can effectively suppress vibration and shaking generated during operation, weaken the outward transmission of vibration energy, significantly block the diffusion and radiation of operating noise, significantly reduce the noise interference of the equipment to the outside, and greatly improve the stability of operation, which can fully meet the usage requirements of indoor low-noise power distribution scenarios.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and in particular to a noise-reducing dry-type transformer. Background Technology

[0002] Dry-type transformers are power transformation devices whose cores and windings are not immersed in insulating oil and rely on air convection and fans for heat dissipation. They are mainly used in indoor power distribution scenarios such as urban buildings, hospitals, shopping malls, data centers, subways, and chemical plants, which require fire protection, explosion protection, and clean environments. Their core function is to step up or down voltage, match the voltage level of the power grid and electrical equipment, and stably transmit electrical energy. They eliminate the oil tank and insulating oil of oil-immersed transformers, and the windings are insulated with epoxy resin, eliminating the risks of oil leakage, fire, and explosion. They have low operating noise, simple maintenance, and a smaller footprint. They can withstand humid and dusty environments and can be directly installed in power distribution rooms and basements. They are suitable for power supply needs in places with strict fire protection requirements. They can reduce the voltage of the high-voltage power grid to a usable low voltage for the equipment, or step up the voltage for power supply. They have sensitive overload protection and are equipped with temperature control and temperature display devices to monitor the winding temperature in real time, resulting in a lower risk of failure. They are the mainstream transformer equipment for indoor power distribution in civil and special industrial applications.

[0003] Publication number "CN118315157A" discloses an insulated and fireproof dry-type transformer. The upper two sides of the transformer tank are connected to rain shelters via support blocks. A foam fire extinguishing device is installed at the top of the transformer tank. A cooling device is installed at one end of the transformer tank, and ventilation holes are provided on the other side. The dry-type transformer is mounted on the bottom center of the transformer tank via insulating blocks. A water-cooling device is installed on one side of the dry-type transformer, and a drying device is installed on the other side. A waterproof device is installed at the bottom of the transformer tank. This insulated and fireproof dry-type transformer prevents leakage by spraying a special insulating coating on its surface and prevents damage from fire.

[0004] Although the aforementioned invention can prevent leakage by spraying a special insulating coating on the surface of the dry-type transformer and prevent fire damage to the dry-type transformer by spraying a fire-retardant coating on the surface of the dry-type transformer, it only has basic insulation and fire protection functions. It does not have multi-level shock absorption, damping buffer and sound absorption and noise reduction structures. It cannot effectively weaken and block the vibration and noise generated by the operation of the dry-type transformer. The vibration is easy to conduct outward when the equipment is running, the noise diffusion is obvious, the noise reduction performance is poor, and it is difficult to meet the use requirements of low-noise power distribution scenarios. Summary of the Invention

[0005] The purpose of this invention is to provide a noise-reducing dry-type transformer to solve the problems that without multi-stage vibration reduction, damping buffer, and sound absorption and noise reduction structures, the vibration and noise generated by the operation of the dry-type transformer cannot be effectively weakened and blocked, the vibration is easily transmitted outward during equipment operation, the noise spreads significantly, and the noise reduction performance is poor.

[0006] To achieve the above objectives, the present invention provides a noise-reducing dry-type transformer, including a base, a receiving groove on the top of the base, a lifting plate inside the receiving groove, a housing fixedly connected to the top of the lifting plate, a door hinged to one side of the housing, a dry-type transformer threadedly connected inside the housing, a fixed seat fixedly connected to one side of the base, a fire extinguishing component installed on the top of the fixed seat, a first shock-absorbing component installed inside the base, and second shock-absorbing components symmetrically installed at the bottom of the receiving groove. The first shock-absorbing assembly includes a receiving cavity, a mounting base, a fixed rod, a movable block, a connecting block, a movable seat, a hinge plate, and a first shock-absorbing spring. The base has a receiving cavity inside. The mounting base is symmetrically fixedly connected to the bottom of the receiving cavity. The mounting base is symmetrically fixedly connected to the fixed rod. The movable block is symmetrically slidably sleeved on the outside of the fixed rod. The top of the movable block is symmetrically fixedly connected to the connecting block. The top of the connecting block extends into the receiving groove and is fixedly connected to the movable seat. The top of the movable seat is symmetrically hinged to the hinge plate. The other end of the hinge plate is hinged to the bottom of the lifting plate. The first shock-absorbing spring is sleeved on the outside of the fixed rod. The first shock-absorbing spring is fixedly connected to the opposite side of the movable block at both ends.

[0007] Furthermore, the bottom of the receiving groove is symmetrically provided with through grooves, which communicate with the inside of the receiving cavity, and the connecting block is slidably connected to the through grooves.

[0008] Furthermore, the second shock absorption assembly includes a shock absorption seat, a first limiting post, a second limiting post, an internal hole, and a second shock absorption spring. The bottom of the receiving groove and the bottom of the lifting plate are symmetrically fixedly connected with shock absorption seats. The top of the shock absorption seat at the bottom of the receiving groove is fixedly connected with a first limiting post. An internal hole is opened at the top of the first limiting post. The bottom of the internal hole is fixedly connected with a second shock absorption spring. The other end of the second shock absorption spring is fixedly connected with a second limiting post. The second limiting post and the internal hole are slidably connected. The top of the second limiting post extends to the top of the first limiting post and is fixedly connected to the shock absorption seat at the bottom of the lifting plate.

[0009] Furthermore, a third damping spring is sleeved on the outer side of the first and second limiting posts, and the two ends of the third damping spring are fixedly connected to the opposite side of the damping seat.

[0010] Furthermore, guide grooves are symmetrically provided on both sides of the receiving groove, and guide blocks are symmetrically fixedly connected to both sides of the lifting plate, with the guide blocks and guide grooves being slidably connected.

[0011] Furthermore, the fire extinguishing assembly includes a fire extinguishing cylinder, a cylinder head valve, an electromagnetic actuator, a delivery hose, a nozzle seat, an atomizing nozzle, a rotary joint, and a rotating tube. The fire extinguishing cylinder is symmetrically fixedly connected to the top of the fixed base. A cylinder head valve is installed at the top of the fire extinguishing cylinder. An electromagnetic actuator is installed on one side of the cylinder head valve. A delivery hose is fixedly connected to the output end of the cylinder head valve. The two delivery hoses converge in a Y-shaped arrangement. A rotary joint is embedded in the top of the housing. The fixed input end of the rotary joint is sealed and connected to the end of the delivery hose. The rotating output end of the rotary joint is coaxially fixedly connected to the rotating tube. The rotating tube can rotate independently relative to the delivery hose. The bottom end of the rotating tube extends into the housing and is fixedly connected to a nozzle seat. Atomizing nozzles are symmetrically arranged in a circumferential array at the bottom of the nozzle seat.

[0012] Furthermore, a drive motor is installed on the top of the housing, and a drive gear is rotatably connected to the top of the housing. The output end of the drive motor is fixedly connected to the top of the drive gear. A driven gear is fixedly sleeved on the outer wall of the rotating tube, and the drive gear and the driven gear mesh with each other.

[0013] Furthermore, a smoke sensor is fixedly connected to one side of the inside of the housing, and the smoke sensor is electrically connected to the electromagnetic driver and the drive motor respectively.

[0014] Furthermore, an observation window is fixedly connected to one side of the cabinet door, an embedded handle is installed on one side of the cabinet door, sealing strips are provided around the observation window, and sound-absorbing cotton layers are pasted on the inner walls of the cabinet.

[0015] Furthermore, a damping pad is provided at the connection point between the bottom of the enclosure and the dry-type transformer, and the damping pad is made of rubber.

[0016] Compared with the prior art, the beneficial effects of the present invention are: Firstly, this invention features a double-layer damping structure consisting of a first damping component and a second damping component. The vertical and lateral vibrations generated during the operation of the dry-type transformer can be transmitted to the bottom damping structure through the lifting plate. When the lifting plate is pressed, it causes the hinge plate to swing, pushing the moving block to slide along the fixed rod and compress the first damping spring. In conjunction with the second damping spring between the first and second limiting columns and the third damping spring on the outside, the vibrations can be absorbed by deformation in multiple dimensions, effectively suppressing the overall shaking of the enclosure and significantly reducing the transmission of vibration to the base and the external environment. This solves the problems of traditional transformer damping structures being simple, having poor anti-sway effect, and easily spreading vibration noise, thus significantly improving the stability of equipment operation.

[0017] Secondly, in this invention, a composite noise reduction system is formed by setting a sound-absorbing cotton layer and a damping pad inside the enclosure. The dry-type transformer is installed on the upper surface of the damping pad. The rubber damping pad can directly isolate the rigid contact between the transformer body and the enclosure, effectively consuming the micro-vibration energy of the equipment and avoiding secondary noise generated by structural resonance. At the same time, the sound-absorbing cotton layer covering the inner wall of the enclosure can absorb the air noise transmitted inside the enclosure. Combined with the sealing and sound insulation effect of the sealing strip of the enclosure door, the noise transmission path is blocked in two ways. Compared with traditional dry-type transformers, the noise reduction and sound insulation effects are greatly improved, which can meet the needs of low-noise and demanding use scenarios such as office buildings, hospitals, and residential areas.

[0018] Thirdly, this invention is equipped with a fully automatic rotary spray fire extinguishing assembly. After the smoke sensor detects a fire, it can simultaneously start the electromagnetic actuator and the drive motor. The electromagnetic actuator opens the cylinder valve to release the fire extinguishing medium, and the Y-shaped confluence delivery hose stably delivers the medium. At the same time, the drive motor drives the rotating tube to rotate through gear meshing. The rotary joint is used to achieve the working state of the pipeline being stationary and the nozzles rotating, so that the circumferential array of atomizing nozzles can spray the outside of the dry-type transformer with 360° no dead angle fire extinguishing. The fire extinguishing coverage is wide, the response speed is fast, and there are no spray blind spots, which effectively improves the fire safety performance of the equipment and ensures the long-term safe and stable operation of the dry-type transformer. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the other three-dimensional structure in this invention; Figure 3 This is a cross-sectional three-dimensional structural diagram of the present invention; Figure 4 This is a schematic diagram of the exploded three-dimensional structure of the present invention; Figure 5 In this invention Figure 4 Enlarged view of part A; Figure 6 This is a three-dimensional structural diagram of the first shock-absorbing component in this invention; Figure 7 In this invention Figure 6 Enlarged view of part B; Figure 8 This is a schematic diagram of the inverted three-dimensional structure in this invention.

[0020] In the diagram: 1. Base; 2. Lifting plate; 3. Housing; 4. Door; 5. Dry-type transformer; 6. Observation window; 7. Guide block; 8. Guide groove; 9. Smoke sensor; 10. Fixed seat; 11. First shock-absorbing assembly; 111. Receiving cavity; 112. Assembly seat; 113. Fixed rod; 114. Moving block; 115. Connecting block; 116. Moving seat; 117. Hinge plate; 118. First shock-absorbing spring; 12. Through groove; 13. Receiving groove; 14. Second shock-absorbing assembly; 141. Shock-absorbing seat; 1 42. First limiting post; 143. Second limiting post; 144. Internal hole; 145. Second shock-absorbing spring; 15. Third shock-absorbing spring; 16. Fire extinguishing assembly; 161. Fire extinguishing storage bottle; 162. Bottle head valve; 163. Electromagnetic actuator; 164. Delivery hose; 165. Nozzle holder; 166. Atomizing nozzle; 167. Rotary joint; 168. Rotating tube; 17. Drive gear; 18. Driven gear; 19. Drive motor; 20. Embedded handle; 21. Sound-absorbing cotton layer; 22. Damping pad. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1 to 8 In this embodiment of the invention, a noise-reducing dry-type transformer includes a base 1. A receiving groove 13 is formed on the top of the base 1. A lifting plate 2 is disposed inside the receiving groove 13. A housing 3 is fixedly connected to the top of the lifting plate 2. A door 4 is hinged to one side of the housing 3. A dry-type transformer 5 is threadedly connected inside the housing 3. A fixing seat 10 is fixedly connected to one side of the base 1. A fire extinguishing component 16 is installed on the top of the fixing seat 10. A first shock-absorbing component 11 is installed inside the base 1. Second shock-absorbing components 14 are symmetrically installed at the bottom of the receiving groove 13. The transformer is composed of multiple components consisting of the first shock-absorbing component 11 and the second shock-absorbing component 14. The multi-stage suspension vibration reduction structure, combined with the internal damping pad 22 and the sound-absorbing cotton layer 21 of the inner wall to form a composite noise reduction system, and with the fully automatic fire extinguishing component 16 that can rotate and spray, constructs a protective structure for the dry-type transformer 5 that integrates vibration reduction, anti-sway, sound insulation and noise reduction, and safety and fire prevention. Compared with the traditional dry-type transformer 5, it not only solves the problems of easy transmission of equipment vibration and obvious noise diffusion, but also effectively suppresses the overall shaking of the box 3 through the synergistic effect of multi-stage vibration reduction. At the same time, it achieves fire handling without dead angles by means of rotating fire extinguishing spray, which greatly improves the stability of equipment operation, noise reduction effect and safety performance, and is suitable for indoor power distribution scenarios with low noise and high fire protection requirements. The first shock-absorbing assembly 11 includes a receiving cavity 111, a mounting base 112, a fixing rod 113, a moving block 114, a connecting block 115, a moving seat 116, a hinge plate 117, and a first shock-absorbing spring 118. The base 1 has a receiving cavity 111 inside. The mounting base 112 is symmetrically and fixedly connected to the bottom of the receiving cavity 111. The fixing rod 113 is symmetrically and fixedly connected between the mounting bases 112. The moving block 114 is symmetrically and slidably sleeved on the outer side of the fixing rod 113. The connecting block 115 is symmetrically and fixedly connected to the top of the moving block 114. The top of the connecting block 115 extends into the receiving groove 13 and is fixedly connected to the moving seat 116. The top of the moving seat 116 is symmetrically hinged to the hinge plate 117. The other end of the hinge plate 117 is hinged to the bottom of the lifting plate 2. The first shock-absorbing spring 118 is sleeved on the outer side of the fixing rod 113. The first shock-absorbing spring 118 has two ends... The ends are fixedly connected to the opposite sides of the moving block 114. When the dry-type transformer 5 operates and generates vertical vibration, which is transmitted to the lifting plate 2, the lifting plate 2 is displaced downward by the vibration, causing the hinge plates 117 on both sides to swing down synchronously. This pushes the moving seat 116 and the connecting block 115 below to separate horizontally to both sides, thereby causing the two sets of moving blocks 114 to slide outward and backward along the fixed rod 113. This stretches the first damping spring 118 in the middle, causing it to deform. The spring absorbs the vibration energy through its elastic deformation, converting the vertical vibration impact force into the elastic potential energy of the spring and gradually dissipating it. The structure of the hinged connecting rod and the sliding spring can convert the vertical vibration into the horizontal spring deformation, effectively dispersing the vibration impact force and avoiding the stress concentration problem that is easy to occur with single vertical damping. This greatly improves the buffer stroke and energy absorption effect of vertical damping, and at the same time, it can offset part of the lateral swaying impact force, improving the overall anti-sway performance of the equipment.

[0023] Please see Figures 4 to 7 The bottom of the receiving groove 13 is symmetrically provided with through grooves 12, which are connected to the inside of the receiving cavity 111. The connecting block 115 is slidably connected to the through groove 12. The through groove 12 provides clearance space and movement guidance for the horizontal movement of the connecting block 115, ensuring that the connecting block 115 can slide smoothly and synchronously with the moving block 114, avoiding jamming and offset, and ensuring the smooth transmission of the hinge plate 117. At the same time, the limiting function of the through groove 12 can constrain the movement range of the connecting block 115, indirectly limiting the vertical displacement of the lifting plate 2.

[0024] Please see Figure 5The second shock absorption assembly 14 includes a shock absorption seat 141, a first limiting post 142, a second limiting post 143, an internal hole 144, and a second shock absorption spring 145. The bottom of the receiving groove 13 and the bottom of the lifting plate 2 are symmetrically and fixedly connected to the shock absorption seat 141. The top of the shock absorption seat 141 at the bottom of the receiving groove 13 is fixedly connected to the first limiting post 142. The top of the first limiting post 142 has an internal hole 144. The bottom of the internal hole 144 is fixedly connected to the second shock absorption spring 145. The other end of the second shock absorption spring 145 is fixedly connected to the second limiting post 143. The second limiting post 143 and the internal hole 144 are slidably connected. The top extends to the top of the first limiting post 142 and is fixedly connected to the shock absorber seat 141 at the bottom of the lifting plate 2. When the lifting plate 2 is displaced downward by vibration, the second limiting post 143 moves down synchronously with the lifting plate 2, extends into the built-in hole 144 of the first limiting post 142 and squeezes the second shock absorber spring 145. The elastic deformation of the second shock absorber spring 145 further absorbs the vertical vibration energy, forming a dual-stage shock absorption effect with the first shock absorber assembly 11. The sleeve structure of the first limiting post 142 and the second limiting post 143 provides precise vertical guidance for the shock absorption movement, ensuring that the shock absorber spring is only compressed and deformed along the axial direction, avoiding radial bending failure of the spring, and at the same time constraining the horizontal displacement of the lifting plate 2.

[0025] Please see Figure 5 A third damping spring 15 is sleeved on the outer side of the first limiting post 142 and the second limiting post 143. The first and last ends of the third damping spring 15 are fixedly connected to the opposite side of the damping seat 141. The third damping spring 15 and the inner second damping spring 145 form a coaxial double spring damping structure. The two are compressed and deformed synchronously and share the vibration impact force, which further improves the vertical damping load capacity and energy absorption efficiency. It can be adapted to the self-weight and operating vibration load of the large-capacity dry-type transformer 5. At the same time, the double spring structure can disperse the spring fatigue stress.

[0026] Please see Figure 4 The receiving groove 13 has symmetrical guide grooves 8 on both sides, and the lifting plate 2 has guide blocks 7 fixedly connected to both sides. The guide blocks 7 and the guide grooves 8 are slidably connected. When the lifting plate 2 performs vertical shock absorption displacement, the guide blocks 7 on both sides slide up and down synchronously along the guide grooves 8, providing full-circumferential guidance and limit for the overall movement of the lifting plate 2. This effectively prevents the lifting plate 2 from lateral displacement and torsional shaking during shock absorption, ensuring that the housing 3 and the internal dry transformer 5 always maintain a stable vertical shock absorption state, and avoiding problems such as wiring pulling and component collision caused by equipment displacement.

[0027] Please see Figures 2 to 3The fire extinguishing assembly 16 includes a fire extinguishing cylinder 161, a cylinder head valve 162, an electromagnetic actuator 163, a delivery hose 164, a nozzle seat 165, an atomizing nozzle 166, a rotary joint 167, and a rotating tube 168. The fire extinguishing cylinder 161 is symmetrically fixedly connected to the top of the fixed base 10. A cylinder head valve 162 is installed at the top of the fire extinguishing cylinder 161. An electromagnetic actuator 163 is installed on one side of the cylinder head valve 162. A delivery hose 164 is fixedly connected to the output end of the cylinder head valve 162. The two delivery hoses 164 converge in a Y-shape. A rotary joint 167 is embedded at the top of the housing 3. The fixed input end of the rotary joint 167 is sealed and connected to the end of the delivery hose 164. The rotating output end of the rotary joint 167 is coaxially fixedly connected to the rotating tube 168. The rotating tube 168 can rotate relative to the delivery hose 164. The rotating tube 168 extends to the inside of the housing 3 and is fixedly connected to the nozzle seat 165. The nozzle seat 165 is symmetrically equipped with atomizing nozzles 166 along a circumferential array at its bottom. After receiving the start signal, the electromagnetic driver 163 drives the cylinder valve 162 to open. The extinguishing medium in the two extinguishing storage cylinders 161 is output through the delivery hose 164, and after being collected by the Y-shaped manifold structure, it enters the fixed end of the rotary joint 167. Then it flows into the rotating tube 168 and is delivered to the nozzle seat 165. Finally, it is atomized and sprayed outward through the atomizing nozzles 166 at the bottom. The Y-shaped manifold design allows for simultaneous liquid supply from both cylinders, which increases the discharge flow rate and pressure of the extinguishing medium and ensures extinguishing efficiency. The rotary joint 167 realizes the function of stationary pipeline and rotating spray end, which not only ensures the sealing stability of the medium delivery, but also drives the nozzle to rotate and spray.

[0028] Please see Figure 1 A drive motor 19 is installed on the top of the housing 3, and a drive gear 17 is rotatably connected to the top of the housing 3. The output end of the drive motor 19 is fixedly connected to the top of the drive gear 17. A driven gear 18 is fixedly sleeved on the outer wall of the rotating tube 168. The drive gear 17 and the driven gear 18 mesh with each other. When the fire extinguishing is activated, the drive motor 19 operates synchronously, driving the drive gear 17 at the output end to rotate. Through gear meshing, the driven gear 18 is driven to rotate synchronously, thereby driving the rotating tube 168 to rotate around its own axis. This causes the nozzle seat 165 and the atomizing nozzle 166 to move in a circular motion synchronously with the rotating tube 168, achieving 360° rotating spray. The gear transmission structure has high transmission accuracy and stable operation, ensuring that the rotating tube 168 rotates at a uniform speed. This allows the fire extinguishing medium sprayed by the atomizing nozzle 166 to evenly cover the entire outer area of ​​the dry transformer 5, eliminating blind spots and improving the comprehensiveness and efficiency of fire extinguishing.

[0029] Please see Figure 3A smoke sensor 9 is fixedly connected to one side of the interior of the housing 3. The smoke sensor 9 is electrically connected to the electromagnetic driver 163 and the drive motor 19. When the dry-type transformer 5 inside the housing 3 overheats and catches fire due to a fault, producing smoke, the smoke sensor 9 detects the smoke signal in real time and immediately sends an electrical signal to the electromagnetic driver 163 and the drive motor 19 synchronously, triggering the fire extinguishing component 16 and the rotary drive mechanism to start synchronously. This achieves automatic fire detection and fully automatic fire extinguishing without human intervention, with a fast response speed. It can quickly deal with fires in the early stages, effectively curb the spread of fire, and greatly improve the fire safety performance of the equipment.

[0030] Please see Figure 1 An observation window 6 is fixedly connected to one side of the enclosure door 4, and an embedded handle 20 is installed on one side of the enclosure door 4. A sealing strip is set around the observation window 6, and the inner wall of the enclosure 3 is covered with a sound-absorbing cotton layer 21. The observation window 6 allows the staff to directly observe the operating status of the dry-type transformer 5 inside the enclosure 3 without opening the door. The embedded handle 20 makes the appearance of the enclosure door 4 flat and easy to open and close. The sealing strip around the observation window 6 cooperates with the sealing structure of the edge of the enclosure door 4 to improve the overall sealing of the enclosure 3 and reduce the spread of operating noise from the gaps. The sound-absorbing cotton layer 21 covering the inner wall of the enclosure 3 can effectively absorb the air noise transmitted inside the enclosure 3 and consume sound energy through the porous sound-absorbing structure, which greatly reduces the outward radiation of equipment operating noise.

[0031] Please see Figure 3 A damping pad 22 is provided at the connection position between the bottom of the housing 3 and the dry-type transformer 5. The damping pad 22 is made of rubber and is placed between the dry-type transformer 5 and the bottom wall of the housing 3. This isolates the rigid connection between the equipment body and the housing 3, and can directly consume the micro-vibration energy generated by the operation of the dry-type transformer 5. This prevents the vibration from being directly transmitted to the housing 3 through rigid contact and causing structural resonance, thereby weakening the generation of vibration and noise from the source. Together with the multi-level shock absorption components at the bottom, a layered shock absorption and noise reduction system is formed from the inside out, further improving the overall noise reduction and anti-sway effect of the equipment. At the same time, the rubber damping pad 22 also has the function of insulation and anti-slip.

[0032] The working principle of this invention is as follows: When the dry-type transformer 5 vibrates during normal operation, the damping pad 22 at the bottom of the transformer first attenuates the vibration of the main body and weakens the transmission of rigid vibration to the bottom wall of the housing 3. The remaining vibration is transmitted to the lifting plate 2 along the housing 3. The lifting plate 2 is vibrated and generates vertical displacement. The guide blocks 7 on both sides slide along the guide groove 8 to ensure smooth movement. At the same time, the hinge plate 117 at the bottom of the lifting plate 2 swings down to push the moving seat 116, which drives the moving blocks 114 on both sides to slide towards each other along the fixed rod 113 and squeeze the first damping spring 118 to dissipate energy. With the coordinated deformation and energy absorption of the second damping spring 145 and the third damping spring 15 in the second damping component 14 in the receiving groove 13, the vertical and horizontal vibrations are offset in multiple dimensions, suppressing the overall shaking of the housing 3. At the same time, the sound-absorbing cotton layer 21 on the inner wall of the housing 3 absorbs the operating noise transmitted by the air, realizing multi-level vibration reduction and noise reduction. When the windings inside the box overheat and cause a fire, the smoke sensor 9 detects the smoke signal and simultaneously triggers the electromagnetic driver 163 and the drive motor 19. The electromagnetic driver 163 opens the bottle head valve 162, and the extinguishing medium in the extinguishing storage bottle 161 is delivered to the rotating tube 168 through the Y-shaped confluence of the delivery hose 164 and the rotary joint 167. The drive motor 19 drives the rotating tube 168 and the nozzle seat 165 to rotate through the meshing of the drive gear 17 and the driven gear 18, so that the atomizing nozzle 166 can perform 360° full-area rotating spray on the outside of the dry-type transformer 5, quickly extinguishing the initial fire and ensuring the safe operation of the equipment.

Claims

1. A noise-reducing dry-type transformer, characterized in that, Includes a base (1), the top of which has a receiving groove (13), a lifting plate (2) is provided inside the receiving groove (13), a box (3) is fixedly connected to the top of the lifting plate (2), a box door (4) is hinged to one side of the box (3), a dry transformer (5) is threadedly connected inside the box (3), a fixed seat (10) is fixedly connected to one side of the base (1), a fire extinguishing component (16) is installed on the top of the fixed seat (10), a first shock-absorbing component (11) is installed inside the base (1), and a second shock-absorbing component (14) is symmetrically installed at the bottom of the receiving groove (13). The first damping assembly (11) includes a receiving cavity (111), a mounting base (112), a fixing rod (113), a moving block (114), a connecting block (115), a moving seat (116), a hinge plate (117), and a first damping spring (118). The base (1) has a receiving cavity (111) inside. The mounting base (112) is symmetrically fixedly connected to the bottom of the receiving cavity (111). The fixing rod (113) is symmetrically fixedly connected between the mounting bases (112). The moving seat (118) is symmetrically slidably sleeved on the outside of the fixing rod (113). The top of the movable block (114) is symmetrically fixedly connected to a connecting block (115). The top of the connecting block (115) extends into the receiving groove (13) and is fixedly connected to a movable seat (116). The top of the movable seat (116) is symmetrically hinged to a hinge plate (117). The other end of the hinge plate (117) is hinged to the bottom of the lifting plate (2). The outer side of the fixed rod (113) is fitted with a first shock-absorbing spring (118). The first shock-absorbing spring (118) is fixedly connected to the opposite side of the movable block (114) at both ends.

2. The noise-reducing dry-type transformer according to claim 1, characterized in that, The bottom of the receiving groove (13) is symmetrically provided with through grooves (12), the through grooves (12) are connected to the inside of the receiving cavity (111), and the connecting block (115) is slidably connected to the through grooves (12).

3. The noise-reducing dry-type transformer according to claim 1, characterized in that, The second shock absorber assembly (14) includes a shock absorber seat (141), a first limiting post (142), a second limiting post (143), an internal hole (144), and a second shock absorber spring (145). The bottom of the receiving groove (13) and the bottom of the lifting plate (2) are symmetrically fixedly connected with shock absorber seats (141). The top of the shock absorber seat (141) at the bottom of the receiving groove (13) is fixedly connected with the first limiting post (142). The top of the first limiting post (142) has an internal hole (144). The bottom of the internal hole (144) is fixedly connected with the second shock absorber spring (145). The other end of the second shock absorber spring (145) is fixedly connected with the second limiting post (143). The second limiting post (143) and the internal hole (144) are slidably connected. The top of the second limiting post (143) extends to the top of the first limiting post (142) and is fixedly connected to the shock absorber seat (141) at the bottom of the lifting plate (2).

4. A noise-reducing dry-type transformer according to claim 3, characterized in that, A third damping spring (15) is sleeved on the outside of the first limiting post (142) and the second limiting post (143), and the first and second ends of the third damping spring (15) are fixedly connected to the opposite side of the damping seat (141).

5. A noise-reducing dry-type transformer according to claim 1, characterized in that, The receiving groove (13) has symmetrical guide grooves (8) on both sides inside, and the lifting plate (2) has symmetrical guide blocks (7) fixedly connected on both sides. The guide blocks (7) and the guide grooves (8) are slidably connected.

6. A noise-reducing dry-type transformer according to claim 1, characterized in that, The fire extinguishing assembly (16) includes a fire extinguishing cylinder (161), a cylinder head valve (162), an electromagnetic actuator (163), a delivery hose (164), a nozzle base (165), an atomizing nozzle (166), a rotary joint (167), and a rotating tube (168). The fire extinguishing cylinder (161) is symmetrically fixedly connected to the top of the fixed base (10). A cylinder head valve (162) is installed at the top of the fire extinguishing cylinder (161). An electromagnetic actuator (163) is installed on one side of the cylinder head valve (162). A delivery hose (164) is fixedly connected to the output end of the cylinder head valve (162). The two cylinder heads... The delivery hose (164) is arranged in a Y-shape. A rotary joint (167) is embedded in the top of the box (3). The fixed input end of the rotary joint (167) is sealed and connected to the end of the delivery hose (164). The rotating output end of the rotary joint (167) is coaxially fixed to the rotating tube (168). The rotating tube (168) can rotate independently relative to the delivery hose (164). The bottom end of the rotating tube (168) extends into the box (3) and is fixedly connected to the nozzle seat (165). The nozzle seat (165) is symmetrically equipped with atomizing nozzles (166) in a circumferential array at the bottom.

7. A noise-reducing dry-type transformer according to claim 6, characterized in that, A drive motor (19) is installed on the top of the housing (3), and a drive gear (17) is rotatably connected to the top of the housing (3). The output end of the drive motor (19) is fixedly connected to the top of the drive gear (17). A driven gear (18) is fixedly sleeved on the outer wall of the rotating tube (168). The drive gear (17) and the driven gear (18) mesh with each other.

8. A noise-reducing dry-type transformer according to claim 7, characterized in that, A smoke sensor (9) is fixedly connected to one side of the inside of the housing (3). The smoke sensor (9) is electrically connected to the electromagnetic driver (163) and the drive motor (19).

9. A noise-reducing dry-type transformer according to claim 1, characterized in that, An observation window (6) is fixedly connected to one side of the box door (4), an embedded handle (20) is installed on one side of the box door (4), a sealing strip is provided around the observation window (6), and a sound-absorbing cotton layer (21) is pasted on the inner wall of the box body (3).

10. A noise-reducing dry-type transformer according to claim 1, characterized in that, The bottom of the housing (3) is fitted with a damping pad (22) at the connection point between the dry-type transformer (5) and the housing (3). The damping pad (22) is made of rubber.

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