A transformer with noise reduction structure

Abstract

This utility model discloses a transformer with a noise reduction structure, relating to the field of transformer technology. It includes a transformer casing and a core end plate, with a first rubber frame and a second rubber frame respectively provided on both sides of the core end plate. By configuring the transformer casing, core end plate, and first rubber frames, the transformer winding core is installed inside the transformer casing via the core end plate. When the winding core vibrates due to hysteresis, it transmits the vibration to the core end plate. At this time, the first rubber frame between the core end plate and the transformer casing deforms due to the kinetic energy of the vibration, causing a small-amplitude movement between the core end plate, the winding core, and the transformer casing. During this process, the deformation of the first rubber frame absorbs the kinetic energy, preventing it from being transmitted to the transformer casing. This reduces the impact of the winding core vibration on the transformer casing, thereby reducing the noise during transformer operation.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a transformer with a noise reduction structure. 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 basic equipment for power transmission and distribution and are widely used in industry, agriculture, transportation, urban communities, and other fields. Due to the limitations of its working principle, transformers generate a certain amount of noise during operation, which can seriously affect the daily lives of residents around the transformer.

[0003] In existing technologies, vibration dampers are installed at the bottom of the transformer to reduce noise. However, since the noise of the transformer is mainly caused by the vibration generated by the magnetic expansion and contraction of the iron core during operation, the effect of simply installing vibration dampers at the bottom of the transformer on reducing vibration and noise is limited.

[0004] Therefore, it is necessary to invent a transformer with a noise reduction structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a transformer with a noise reduction structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A transformer with a noise reduction structure includes a transformer shell and a core end plate. The transformer shell has an internal cavity. The core end plate is located above the transformer shell. A winding core is fixedly mounted on the lower surface of the core end plate and is located in the internal cavity of the transformer shell. A first rubber frame and a second rubber frame are respectively provided on both sides of the core end plate. Multiple deformation grooves are sequentially opened from bottom to top on both sides of the first and second rubber frames. Positioning blocks are fixedly mounted on the inner walls of both sides of the multiple deformation grooves. The cross-section of both sets of positioning blocks is set as a semi-circular structure, and the two sets of positioning blocks are symmetrically arranged. A pressure frame is provided above the second rubber frame. Positioning seats are rotatably mounted at the top of the four corners of the outer wall of the transformer shell through pins. The positioning seats are set as "U"-shaped structures. A threaded groove is opened at the top of the positioning seat, and a clamping bolt is threaded inside the threaded groove.

[0007] Preferably, the bottom end of the clamping bolt is provided with a pressure block that can be rotatably provided through a bearing, and the upper surface of the pressure frame is fixed with a tube that is adapted to the pressure block at each of the four corners.

[0008] Preferably, a limiting plate is fixedly provided on the middle of both sides of the positioning seat, the two limiting plates are arranged perpendicularly to each other, a rubber block is fixedly provided on the middle of the inner side of the two limiting plates, and a gap is provided between the two rubber blocks and the iron core end plate.

[0009] Preferably, each of the four positioning seats has a connecting seat fixedly provided at the bottom of its outer side wall, and the bottom of the transformer housing is fixedly provided with a base by bolts. Each of the four corners of the outer side wall of the base is provided with a connecting screw that can be rotatably provided by a pin, and the connecting screw is adapted to the connecting seat.

[0010] Preferably, the top end of the connecting screw is provided with two sets of nuts by thread, and the two sets of nuts are respectively located on both sides of the connecting seat.

[0011] Preferably, both ends of the first rubber frame and the second rubber frame are fixedly provided with sealing rings.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model, by setting up a transformer shell, a core end plate and a first rubber frame, allows the transformer winding core to be installed inside the transformer shell through the core end plate. When the winding core vibrates due to hysteresis expansion and contraction, the winding core transmits the vibration to the core end plate. At this time, the first rubber frame between the core end plate and the transformer shell deforms due to the kinetic energy of the vibration, causing a small-amplitude movement between the core end plate, the winding core and the transformer shell. During this process, the deformation of the first rubber frame absorbs the kinetic energy, preventing the kinetic energy from being transmitted to the transformer shell, thereby reducing the impact of the transformer shell on the vibration of the winding core, and thus reducing the noise during transformer operation.

[0014] 2. This utility model sets up a pressure frame, a second rubber frame, and a positioning block. The positioning block and the pressure frame press the iron core end plate on top of the first rubber frame through the second rubber frame to achieve positioning of the iron core end plate. Furthermore, when the iron core end plate vibrates due to the hysteresis expansion and contraction of the winding iron core, the second rubber frame and the first rubber block synchronously absorb the kinetic energy of the iron core end plate to improve the energy absorption effect of the device, thereby achieving the effect of reducing transformer noise. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is an exploded view of the overall structure of this utility model.

[0017] Figure 3 This is a schematic cross-sectional view of the first rubber frame structure of this utility model.

[0018] Figure 4For the present utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0019] Figure 5 This is a schematic diagram of the transformer housing structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the positioning seat structure of this utility model.

[0021] In the diagram: 1. Transformer casing; 2. Core end plate; 3. Winding core; 4. First rubber frame; 5. Second rubber frame; 6. Deformation groove; 7. Positioning block; 8. Pressure frame; 9. Positioning seat; 10. Threaded groove; 11. Tightening bolt; 12. Pressure block; 13. Insert tube; 14. Limiting plate; 15. Rubber block; 16. Connecting seat; 17. Connecting screw; 18. Base; 19. Sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides, for example Figure 1-6 The transformer shown includes a transformer housing 1 and a core end plate 2. The transformer housing 1 has an internal cavity. The core end plate 2 is located above the transformer housing 1. A winding core 3 is fixed on the lower surface of the core end plate 2 and is located in the internal cavity of the transformer housing 1. A first rubber frame 4 and a second rubber frame 5 are respectively provided on both sides of the core end plate 2. Multiple deformation grooves 6 are opened sequentially from bottom to top on both sides of the first rubber frame 4 and the second rubber frame 5. Positioning blocks 7 are fixed on the inner walls of both sides of the multiple deformation grooves 6. The cross-section of the two sets of positioning blocks 7 is set as a semi-circular structure and the two sets of positioning blocks 7 are symmetrically arranged. The first rubber frame 4 and the second rubber frame 5 can deform along the deformation grooves 6. After their deformation reaches a certain extent, the two positioning blocks 7 squeeze each other to limit the deformation range of the first rubber frame 4 and the second rubber frame 5.

[0024] Above the second rubber frame 5, there is a pressing frame 8. At the top of the four corners of the outer side wall of the transformer housing 1, there are positioning seats 9 rotatably arranged through pin shafts. The positioning seats 9 are of a "C" - shaped structure. At the top of the positioning seats 9, there are threaded grooves 10. Inside the threaded grooves 10, there are pressing bolts 11 arranged through threads. At the bottom end of the pressing bolts 11, there are pressing blocks 12 rotatably arranged through bearings. At the four corners of the upper surface of the pressing frame 8, there are insertion tubes 13 fixed and adapted to the pressing blocks 12. By rotating the pressing bolts 11 to press the pressing frame 8 downward, the second rubber frame 5 can be pressed against the surface of the iron core end plate 2 by the pressing frame 8;

[0025] In the middle of both sides of the positioning seat 9, there are limiting plates 14 fixed. The two limiting plates 14 are vertically arranged. In the middle of the inner sides of the two limiting plates 14, there are rubber blocks 15 fixed. And there are gaps between the two rubber blocks 15 and the iron core end plate 2. The rubber blocks 15 are used to limit the movement range of the iron core end plate 2 to prevent the excessive movement range of the iron core end plate 2 from affecting the normal operation of the winding iron core 3;

[0026] At the bottom ends of the outer side walls of the four positioning seats 9, there are connecting seats 16 fixed. At the bottom of the transformer housing 1, there is a base 18 fixed by bolts. At the bottom ends of the four corners of the outer side wall of the base 18, there are connecting screws 17 rotatably arranged through pin shafts. And the connecting screws 17 are adapted to the connecting seats 16. At the top of the connecting screws 17, there are two groups of nuts arranged through threads, and the two groups of nuts are respectively arranged on both sides of the connecting seat 16. After the positioning seat 9 presses the pressing frame 8, the connecting screw 17 can be flipped into the connecting seat 16 and connected to the positioning seat 9 through the nuts. At this time, the four groups of connecting screws 17 can fix the position between the base 18 and the transformer housing 1 to improve the connection stability between the base 18 and the transformer housing 1;

[0027] Sealing rings 19 are fixed at both ends of the first rubber frame 4 and the second rubber frame 5. The setting of the sealing rings 19 improves the sealing effect between the first rubber frame 4, the second rubber frame 5 and the iron core end plate 2 to prevent the leakage of the transformer oil inside the transformer housing 1.

[0028] The working principle of the present utility model:

[0029] In use, the core end plate 2 is installed above the transformer housing 1, and the winding core 3 is installed inside the transformer housing 1. The winding core 3 is connected to the circuit through a terminal block and completes the transformation operation. During the operation of the transformer, the winding core 3 generates hysteresis expansion and contraction when energized, and vibrates due to hysteresis expansion and contraction. The winding core 3 transmits the vibration to the core end plate 2, causing relative movement between the core end plate 2, the winding core 3, and the transformer housing 1. At this time, the core end plate 2 drives one end of the first rubber frame 4 and the second rubber frame 5 to move, causing the first rubber frame 4 and the second rubber frame 5 to deform. Rubber frame 4 and second rubber frame 5 deform along deformation groove 6. During this process, core end plate 2 moves within a certain range inside transformer shell 1. First rubber frame 4 and second rubber frame 5 deform and absorb energy. At this time, the kinetic energy of the vibration of core end plate 2 and winding core 3 is absorbed by the deformation of first rubber frame 4 and second rubber frame 5. During this process, core end plate 2 and winding core 3 will not contact transformer shell 1, and their vibration kinetic energy will not be transmitted to transformer shell 1. Therefore, transformer shell 1 will not vibrate, nor will it generate noise due to collision with winding core 3. The amount of noise generated during transformer operation is low.

[0030] It should be noted that in this embodiment, the transformer casing 1 and the winding core 3 both adopt the existing structure in the prior art. The inside of the transformer casing 1 is also filled with transformer oil to ensure that the winding core 3 works normally.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A transformer with a noise reduction structure, comprising a transformer housing (1) and a core end plate (2), characterized in that: The interior of the transformer housing (1) is provided with an inner cavity. The iron core end plate (2) is arranged above the transformer housing (1). The lower surface of the iron core end plate (2) is fixedly provided with a winding iron core (3), and the winding iron core (3) is arranged in the inner cavity inside the transformer housing (1). First rubber frames (4) and second rubber frames (5) are respectively arranged on both sides of the iron core end plate (2). A plurality of deformation grooves (6) are sequentially formed from bottom to top on both sides of the first rubber frame (4) and the second rubber frame (5). Positioning blocks (7) are fixedly arranged on both inner walls of the plurality of deformation grooves (6). The cross-sections of the two groups of positioning blocks (7) are both semi-circular structures, and the two groups of positioning blocks (7) are symmetrically arranged. A pressing frame (8) is arranged above the second rubber frame (5). At the top corners of the outer side wall of the transformer housing (1), positioning seats (9) are rotatably arranged through pin shafts, and the positioning seats (9) are in a "C" - shaped structure. A threaded groove (10) is formed at the top of the positioning seat (9). A pressing bolt (11) is arranged in the threaded groove (10) through threads.

2. The transformer with noise reduction structure according to claim 1, characterized in that: The bottom end of the pressing bolt (11) is rotatably provided with a pressing block (12) through a bearing. Plug pipes (13) adapted to the pressing block (12) are fixedly arranged at the four corners of the upper surface of the pressing frame (8).

3. The transformer with noise reduction structure according to claim 1, characterized in that: Limiting plates (14) are fixedly arranged in the middle of both sides of the positioning seat (9). The two limiting plates (14) are vertically arranged. Rubber blocks (15) are fixedly arranged in the middle of the inner sides of the two limiting plates (14), and gaps are arranged between the two rubber blocks (15) and the iron core end plate (2).

4. The transformer with noise reduction structure according to claim 1, characterized in that: Connection seats (16) are fixedly arranged at the bottom ends of the outer side walls of the four positioning seats (9). A base (18) is fixedly arranged at the bottom end of the transformer housing (1) through bolts. Connection screws (17) are rotatably arranged through pin shafts at the bottom corners of the outer side wall of the base (18), and the connection screws (17) are adapted to the connection seats (16).

5. The transformer with noise reduction structure according to claim 4, characterized in that: Two groups of nuts are arranged at the top end of the connection screw (17) through threads, and the two groups of nuts are respectively arranged on both sides of the connection seat (16).

6. The transformer with noise reduction structure according to claim 1, characterized in that: Sealing rings (19) are fixedly arranged at both ends of the first rubber frame (4) and the second rubber frame (5).

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