A noise reduction protection device for a transformer

Abstract

This application provides a transformer noise reduction and protection device, relating to the field of power equipment noise reduction. It includes a protective cover, with a base fixedly installed inside the cover. A transformer body is mounted on the upper side of the base. Two lifting plates are installed inside the protective cover, both located above the transformer body. A shock-absorbing mechanism is located below the lifting plates. This application, through the cooperation of the protective cover, sealing cover, positioning plate, sliding toothed plate, gear, drive shaft, threaded rod, guide block, lifting plates, and clamping plate, achieves automatic descent of the shock-absorbing mechanism to press against the transformer body when the sealing cover is closed, and automatic descent of the shock-absorbing mechanism to release the pressure when the sealing cover is opened. This allows for transformer removal or maintenance without disassembling any shock-absorbing components, significantly simplifying the operation process, and is particularly suitable for outdoor or space-constrained installation locations.

Description

Technical Field

[0001] This invention relates to the field of noise reduction in power equipment, and more specifically, to a noise reduction and protection device for transformers. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. Its main components are a primary coil, a secondary coil, and an iron core (magnetic core). Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer). Transformers are often installed in residential areas, villages, or in the wild.

[0003] In the prior art, Chinese invention patent with publication number CN211828382U discloses a transformer protection device that facilitates noise reduction. It includes a housing, a base, support feet, and a shock-absorbing component installed inside the housing. It absorbs the vibration energy of the transformer during operation by utilizing the extension and contraction deformation of the first and second springs, and sets up a multi-layer composite protective cover on the outside of the housing. It achieves noise reduction from both the vibration source and the propagation path, and can alleviate the noise problem generated by the transformer during operation to a certain extent.

[0004] However, in actual use, the shock absorption mechanism is fixedly connected to the inner side of the enclosure via a connecting rod, and the fixing rod and sleeve continuously act on the support plate and the bottom of the transformer. That is, the shock absorption component and the transformer are always in a state of tight contact. When the transformer needs to be regularly inspected, troubleshooted, or parts replaced, the operator must first disassemble the shock absorption component or its connecting parts inside the enclosure before the transformer can be released from locking and pressing, and then the transformer can be taken out or maintained. This process involves the disassembly and assembly of multiple parts, which is cumbersome and time-consuming. Especially for outdoor installations or places with limited space, the maintenance difficulty is significantly increased. In view of this, we propose a transformer noise reduction and protection device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of inconvenience in using some current transformer noise reduction and protection devices.

[0006] To achieve the above-mentioned objectives and improve the above-mentioned problems, the present invention provides a transformer noise reduction and protection device, including a protective cover. A base is fixedly installed inside the protective cover, and a transformer body is arranged on the upper side of the base. Two lifting plates are arranged inside the protective cover, both of which are located on the upper side of the transformer body. A shock-absorbing mechanism is arranged on the lower side of the lifting plates. Guide grooves are opened on both inner walls of the protective cover, and lifting mechanisms are arranged inside the guide grooves. Two sliding grooves are opened inside the top plate and bottom plate of the protective cover. A driving mechanism is arranged inside the two upper sliding grooves. Two cavities are also opened inside the top plate of the protective cover, and the two cavities are respectively connected to the two upper sliding grooves. A transmission mechanism is arranged inside the cavities. A sealing cover is arranged on the front side of the protective cover. A sealing gasket is arranged on the side surface of the sealing cover adjacent to the protective cover. A pressing mechanism is arranged on the outside of the protective cover.

[0007] As a preferred technical solution of this application, the lifting mechanism includes a threaded rod, which is rotatably connected to the inside of the guide groove. A guide block is threadedly connected to the outside of the threaded rod, and the guide block is slidably connected to the inside of the guide groove and fixedly connected to the lifting plate.

[0008] As a preferred technical solution of this application, the transmission mechanism includes a transmission shaft, which is rotatably connected inside the cavity. The lower end of the transmission shaft rotatably penetrates into the interior of the guide groove and is fixedly connected to the upper end of the threaded rod. A gear is fixedly sleeved on the outside of one end of the transmission shaft located inside the cavity, and the gear extends into the interior of an adjacent sliding groove.

[0009] As a preferred technical solution of this application, the driving mechanism includes a sliding toothed plate, which is slidably connected inside the sliding groove. The sliding toothed plate is meshed with a gear, and sealing plates are fixedly connected to both ends of the sliding toothed plate. A first spring is fixedly connected between the rear sealing plate and the inner wall of the sliding groove.

[0010] As a preferred technical solution of this application, four positioning plates are fixedly connected to the side surface of the sealing cover facing the protective cover, and the four positioning plates are respectively adapted to four sliding grooves. Two grooves are formed on the side surface of the sealing cover facing the protective cover.

[0011] As a preferred technical solution of this application, the clamping mechanism includes two electric push rods, which are respectively fixedly connected to the two side surfaces of the protective cover. The telescopic ends of the two electric push rods are fixedly connected to mounting plates, which are adapted to the grooves. The internal threads of the sealing cover are connected to two locking bolts, which are also threaded to the mounting plates. The front surface of the sealing cover is fixedly connected to two handles.

[0012] As a preferred technical solution of this application, the shock absorption mechanism includes a fixed rod, which is fixedly connected to the lower surface of the lifting plate. A telescopic rod is slidably sleeved inside the fixed rod. A clamping plate is fixedly connected to the lower end of the telescopic rod, and a second spring is fixedly connected between the upper end of the telescopic rod and the inner wall of the fixed rod.

[0013] As a preferred technical solution of this application, the surface of the fixing rod is provided with a plurality of circumferentially arrayed ventilation holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of this application: 1. Through the cooperation between the protective cover, sealing cover, positioning plate, sliding toothed plate, gear, drive shaft, threaded rod, guide block, lifting plate, and clamping plate, the shock absorption mechanism is automatically driven to descend and press the transformer body when the sealing cover is closed, and automatically driven to rise and release the pressure when the sealing cover is opened. The transformer can be removed or maintained without disassembling any shock absorption components, which greatly simplifies the operation process and is especially suitable for outdoor or space-constrained installation sites. 2. By coordinating the fixed rod, telescopic rod, second spring, ventilation hole, clamping plate and base, a composite vibration reduction effect of spring stiffness restoration and air damping is achieved. When the transformer body vibrates, the second spring provides elastic restoring force, and the ventilation hole compresses gas to generate a speed-related damping force. The synergistic effect of the two significantly consumes vibration energy, effectively reducing noise from both the vibration source and the propagation path. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the transformer noise reduction and protection device provided in this application; Figure 2 A cross-sectional structural schematic diagram of the top plate of the protective cover in the transformer noise reduction and protection device provided in this application; Figure 3 A cross-sectional view of the guide groove in the transformer noise reduction and protection device provided in this application; Figure 4 A schematic diagram of the sealing cover plate in the transformer noise reduction and protection device provided in this application; Figure 5 A cross-sectional view of the fixing rod in the transformer noise reduction and protection device provided in this application; Figure 6 Provided for this application Figure 3 Enlarged view of point A in the middle; Figure 7 Provided for this application Figure 2 Enlarged view of point B in the middle.

[0016] The image shows: 1. Protective cover; 2. Base; 3. Transformer body; 4. Lifting plate; 5. Guide groove; 6. Guide block; 7. Threaded rod; 8. Sliding groove; 9. Cavity; 10. Drive shaft; 11. Gear; 12. Sliding toothed plate; 13. Sealing plate; 14. First spring; 15. Sealing cover plate; 16. Electric push rod; 17. Mounting plate; 18. Groove; 19. Locking bolt; 20. Handle; 21. Positioning plate; 22. Fixing rod; 23. Telescopic rod; 24. Second spring; 25. Abutment plate; 26. Ventilation hole; 27. Sealing gasket. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0019] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] Example 1 Please refer to Figures 1-7A transformer noise reduction and protection device includes a protective cover 1. A base 2 is fixedly installed inside the protective cover 1. A transformer body 3 is mounted on the upper side of the base 2. The base 2 is made of rubber to reduce some of the vibration generated by the transformer body 3 during operation. Two lifting plates 4 are installed inside the protective cover 1, both located on the upper side of the transformer body 3. A shock-absorbing mechanism is installed on the lower side of the lifting plates 4. Guide grooves 5 are provided on both inner walls of the protective cover 1. Lifting mechanisms are installed inside the guide grooves 5 to adjust the position of the shock-absorbing mechanism. The top and bottom plates of the protective cover 1... Each part has two sliding grooves 8. The upper two sliding grooves 8 are equipped with driving mechanisms. The top plate of the protective cover 1 also has two cavities 9. The two cavities 9 are connected to the upper two sliding grooves 8 respectively. The cavity 9 is equipped with a transmission mechanism to connect the driving mechanism and the lifting mechanism to realize the transmission between the structures. The front side of the protective cover 1 is equipped with a sealing cover 15. The sealing cover 15 and the protective cover 1 are equipped with sealing gaskets 27 on the side surface of the protective cover 1. The outside of the protective cover 1 is equipped with a pressing mechanism to further improve the sealing effect of the sealing cover 15 on the protective cover 1.

[0022] Furthermore, such as Figures 1-7 As shown, the lifting mechanism includes a threaded rod 7, which is rotatably connected inside the guide groove 5. A guide block 6 is threadedly connected to the outside of the threaded rod 7. The guide block 6 is slidably connected inside the guide groove 5 and fixedly connected to the lifting plate 4.

[0023] Thus, by rotating the threaded rod 7, the guide block 6 can slide along its height direction inside the guide groove 5, thereby moving the lifting plate 4 and thus realizing the movement of the shock absorption mechanism.

[0024] Furthermore, such as Figures 1-7 As shown, the transmission mechanism includes a transmission shaft 10, which is rotatably connected inside the cavity 9. The lower end of the transmission shaft 10 rotatably passes through the interior of the guide groove 5 and is fixedly connected to the upper end of the threaded rod 7. A gear 11 is fixedly sleeved on the outside of one end of the transmission shaft 10 located inside the cavity 9, and the gear 11 extends into the interior of the adjacent sliding groove 8.

[0025] Thus, the rotation of gear 11 can drive the rotation of transmission shaft 10, and the rotation of transmission shaft 10 can drive the rotation of threaded rod 7.

[0026] Furthermore, such as Figures 1-7 As shown, the drive mechanism includes a sliding toothed plate 12, which is slidably connected inside the sliding groove 8. The sliding toothed plate 12 is meshed with the gear 11. Both ends of the sliding toothed plate 12 are fixedly connected to a sealing plate 13. There is a gap between the sealing plate 13 and the sliding groove 8. A first spring 14 is fixedly connected between the rear sealing plate 13 and the inner wall of the sliding groove 8.

[0027] Thus, by moving the sliding toothed plate 12 inside the sliding groove 8, the gear 11 can be driven to rotate. When the sliding toothed plate 12 moves to the rear, it will squeeze the first spring 14. At this time, the first spring 14 will store elastic potential energy to facilitate the subsequent reset of the sliding toothed plate 12.

[0028] Furthermore, such as Figures 1-7 As shown, four positioning plates 21 are fixedly connected to the side surface of the sealing cover 15 facing the protective cover 1. The four positioning plates 21 are respectively adapted to four sliding grooves 8. Two grooves 18 are opened on the side surface of the sealing cover 15 facing the protective cover 1.

[0029] Thus, by setting the positioning plates 21, when the sealing cover 15 moves toward the protective cover 1, the four positioning plates 21 will be inserted into the four sliding grooves 8 respectively. At this time, the two upper positioning plates 21 will push the two upper sliding toothed plates 12 to move.

[0030] Furthermore, such as Figures 1-7 As shown, the clamping mechanism includes two electric push rods 16, which are fixedly connected to the two sides of the protective cover 1. The telescopic ends of the two electric push rods 16 are fixedly connected to mounting plates 17. The mounting plates 17 and the grooves 18 are compatible. The internal threads of the sealing cover 15 are connected to two locking bolts 19, and the locking bolts 19 are also threadedly connected to the mounting plates 17. The front surface of the sealing cover 15 is fixedly connected to two handles 20.

[0031] Thus, when the staff needs to maintain the transformer body 3 inside the protective cover 1, the electric push rod 16 is activated by the external controller. At this time, the electric push rod 16 will drive the sealing cover 15 away from the protective cover 1, and then the sealing cover 15 and the mounting plate 17 can be separated by the locking bolt 19.

[0032] Furthermore, such as Figures 1-7 As shown, the shock absorption mechanism includes a fixed rod 22, which is fixedly connected to the lower surface of the lifting plate 4. A telescopic rod 23 is slidably sleeved inside the fixed rod 22. A pressing plate 25 is fixedly connected to the lower end of the telescopic rod 23. A second spring 24 is fixedly connected between the upper end of the telescopic rod 23 and the inner wall of the fixed rod 22.

[0033] In addition, workers can also install shock-absorbing pads on the contact surfaces of the clamping plate 25 and the transformer body 3.

[0034] Furthermore, such as Figures 1-7 As shown, the surface of the fixing rod 22 has a number of circumferentially arranged ventilation holes 26.

[0035] Thus, when the transformer body 3 vibrates, it forces the telescopic rod 23 to slide inside the fixed rod 22. At this time, the second spring 24 provides stiffness and restoring force, and air damping is generated under the action of the ventilation hole 26. At this time, the air damping generates speed-related resistance by compressing gas, further consuming vibration energy.

[0036] In the above embodiments, the protective cover 1 in this solution includes an outer cover plate, a sound-absorbing plate, a pad plate, through holes, metal wires and other structures. For details, please refer to the prior art with announcement number CN211828382U. Since it is not a major structural improvement, it will not be described in detail here.

[0037] The usage process of the transformer noise reduction and protection device provided by this invention is as follows: First, the transformer body 3 is placed on the rubber base 2 inside the protective cover 1. When it is necessary to shut down the device and perform noise reduction protection, the staff starts the electric push rod 16 through the external controller. At this time, the sealing cover 15 moves to the front of the protective cover 1. At this time, the four positioning plates 21 on the sealing cover 15 are respectively inserted into the four sliding grooves 8 on the top and bottom plates of the protective cover 1. The two positioning plates 21 on the upper side will push the sliding tooth plate 12 inside the sliding groove 8 to move to the rear. The sliding tooth plate 12 drives the gear 11 that meshes with it to rotate. The gear 11 drives the threaded rod 7 in the guide groove 5 to rotate through the transmission shaft 10. The threaded rod 7 drives the guide block 6 to slide down along the guide groove 5. The guide block 6 drives the lifting plate 4 and the shock absorption mechanism on the lower surface of the lifting plate 4 to descend as a whole until the pressing plate 25 presses against the upper surface of the transformer body 3. During this process, the first spring 14 on the rear side of the sliding tooth plate 12 is compressed and stores elastic potential energy.

[0038] When the transformer body 3 is working, it generates vibration. The vibration forces the telescopic rod 23 to slide inside the fixed rod 22. The second spring 24 inside the fixed rod 22 provides stiffness and restoring force. At the same time, the ventilation holes 26 on the surface of the fixed rod 22 cause the internal air to be compressed and flowed, forming an air damping effect, which further consumes vibration energy and realizes the composite damping of spring and air damping.

[0039] When the transformer needs maintenance, the staff only needs to restart the electric push rod 16 to open the sealing cover 15. The sliding toothed plate 12 returns to the forward side under the elastic restoring force of the first spring 14, driving the gear 11, transmission shaft 10, and threaded rod 7 to rotate in the opposite direction, thereby raising the guide block 6, lifting plate 4 and shock absorption mechanism as a whole. The pressing plate 25 is separated from the upper surface of the transformer body 3, releasing the pressing state. The transformer can be taken out for maintenance without disassembling any shock absorption components.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A transformer noise reduction and protection device, characterized in that, The protective cover (1) includes a base (2) fixedly installed inside the protective cover (1). A transformer body (3) is provided on the upper side of the base (2). Two lifting plates (4) are provided inside the protective cover (1). Both lifting plates (4) are located on the upper side of the transformer body (3). A shock-absorbing mechanism is provided on the lower side of the lifting plates (4). Guide grooves (5) are provided on both inner walls of the protective cover (1). Lifting mechanisms are provided inside the guide grooves (5). The top and bottom plates of the protective cover (1) are both provided with... There are two sliding grooves (8), and the upper two sliding grooves (8) are equipped with driving mechanisms. The top plate of the protective cover (1) also has two cavities (9), which are connected to the upper two sliding grooves (8) respectively. The cavity (9) is equipped with a transmission mechanism. The front side of the protective cover (1) is equipped with a sealing cover plate (15). The sealing cover plate (15) and the protective cover (1) are equipped with sealing gaskets (27) on the side surface that is close to each other. The outside of the protective cover (1) is equipped with a pressing mechanism.

2. The transformer noise reduction and protection device according to claim 1, characterized in that, The lifting mechanism includes a threaded rod (7), which is rotatably connected inside the guide groove (5). The threaded rod (7) is threadedly connected to a guide block (6), which is slidably connected inside the guide groove (5) and fixedly connected to the lifting plate (4).

3. The transformer noise reduction and protection device according to claim 2, characterized in that, The transmission mechanism includes a transmission shaft (10), which is rotatably connected inside the cavity (9). The lower end of the transmission shaft (10) rotatably penetrates into the interior of the guide groove (5) and is fixedly connected to the upper end of the threaded rod (7). A gear (11) is fixedly sleeved on the outside of one end of the transmission shaft (10) located inside the cavity (9), and the gear (11) extends into the interior of the adjacent sliding groove (8).

4. The transformer noise reduction and protection device according to claim 3, characterized in that, The driving mechanism includes a sliding toothed plate (12), which is slidably connected inside the sliding groove (8). The sliding toothed plate (12) is meshed with a gear (11). Both ends of the sliding toothed plate (12) are fixedly connected with sealing plates (13). A first spring (14) is fixedly connected between the rear sealing plate (13) and the inner wall of the sliding groove (8).

5. A transformer noise reduction and protection device according to claim 4, characterized in that, Four positioning plates (21) are fixedly connected to the side surface of the sealing cover (1) facing the protective cover (1). The four positioning plates (21) are respectively adapted to four sliding grooves (8). Two grooves (18) are opened on the side surface of the sealing cover (1) facing the protective cover (1).

6. A transformer noise reduction and protection device according to claim 5, characterized in that, The clamping mechanism includes two electric push rods (16), which are fixedly connected to the two sides of the protective cover (1). The telescopic ends of the two electric push rods (16) are fixedly connected to mounting plates (17). The mounting plates (17) and the grooves (18) are compatible. The internal threads of the sealing cover (15) are connected to two locking bolts (19), and the locking bolts (19) are also threadedly connected to the mounting plates (17). The front surface of the sealing cover (15) is fixedly connected to two handles (20).

7. A transformer noise reduction and protection device according to claim 6, characterized in that, The shock absorption mechanism includes a fixed rod (22), which is fixedly connected to the lower surface of the lifting plate (4). A telescopic rod (23) is slidably sleeved inside the fixed rod (22). A clamping plate (25) is fixedly connected to the lower end of the telescopic rod (23). A second spring (24) is fixedly connected between the upper end of the telescopic rod (23) and the inner wall of the fixed rod (22).

8. A transformer noise reduction and protection device according to claim 7, characterized in that, The surface of the fixing rod (22) is provided with a number of circumferentially arranged ventilation holes (26).

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