Noise reduction structure of electric reactor box body

Abstract

The utility model relates to an electric reactor box noise reduction structure, and belongs to the technical field of electric reactor noise reduction, the electric reactor box noise reduction structure comprises a box, magnetic shielding assemblies are symmetrically arranged on the two sides of the inner wall of the box, a plurality of noise reduction assemblies are further arranged on the inner wall of the box side by side, and the noise reduction assemblies and the magnetic shielding assemblies are combined to surround the peripheral side of the inner wall of the box. The noise reduction assembly comprises an anti-vibration pad, a first paperboard layer, a second paperboard layer and a connecting piece. The multiple noise reduction assemblies surround the inner wall of the box body to form a sound insulation barrier, vibration of the iron core and the winding is firstly transmitted to the second paperboard layer through transformer oil, the second paperboard layer blocks the vibration, then the vibration is isolated by the transformer oil layer in the cavity, and finally the vibration is blocked by the first paperboard and the second paperboard, so that the vibration of the iron core and the winding is reduced. The vibration is blocked for multiple times, the transmission path of the vibration along transformer oil is changed, the energy generated when the vibration reaches the box wall is very small, the vibration of the box body is effectively reduced, and therefore noise can be effectively reduced.

Description

Technical Field

[0001] This application relates to the technical field of reactor noise reduction, and in particular to a noise reduction structure for a reactor box body. Background Art

[0002] A reactor is also called an inductor. When a conductor is energized, a magnetic field will be generated within a certain space it occupies. Therefore, all current-carrying conductors have inductance in a general sense. However, the inductance of a long straight energized conductor is small, and the generated magnetic field is not strong. Therefore, an actual reactor is a wire wound in the form of a solenoid, called an air-core reactor; sometimes, in order to make this solenoid have a larger inductance, an iron core is inserted into the solenoid, called an iron-core reactor. Reactance is divided into inductive reactance and capacitive reactance. A more scientific classification is that inductors and capacitors are collectively called reactors. However, since there were inductors first in the past and they were called reactors, the capacitors people talk about now are capacitive reactors, and reactors specifically refer to inductors.

[0003] During the operation of the reactor, the vibrations of the iron core and windings are transmitted through the structure and oil, causing the fuel tank to vibrate and thus generate noise. This noise is relatively large and must be treated for noise prevention. Generally, a sound insulation pad is added at the bottom of the fuel tank, but the noise insulation treatment structure inside the box body is relatively simple and the noise reduction effect is poor. Utility Model Content

[0004] The purpose of this application is to provide a noise reduction structure for a reactor box body to solve the problems raised in the above background art.

[0005] To achieve the above purpose, this application provides a noise reduction structure for a reactor box body and adopts the following technical solutions:

[0006] A noise reduction structure for a reactor box body is applied to the box body of the reactor. Magnetic shielding components are symmetrically arranged on both sides of the inner wall of the box body. A plurality of groups of noise reduction components are also arranged side by side on the inner wall of the box body. The noise reduction components and the magnetic shielding components are combined and surround the peripheral side of the inner wall of the box body. The noise reduction component includes a damping pad, a first cardboard layer, a second cardboard layer and a connecting member. The connecting member includes a screw, a spacer and a nut. One end of the screw is fixed with a base, and the base is welded and fixed on the box wall of the box body. The number of the screws is set to be multiple, and the multiple screws are uniformly fixed on the box wall of the box body. The damping pad, the first cardboard layer and the second cardboard layer are all sleeved on the screw in sequence. The damping pad is arranged close to the box wall of the box body. The first cardboard layer is attached to the damping pad. The spacer is arranged between the first cardboard layer and the second cardboard layer. The nut is screwed on the screw and is located outside the second cardboard layer. A cavity is formed between the first cardboard layer and the second cardboard layer.

[0007] Preferably, in order to avoid affecting the magnetic field, the screw, the cushion block and the nut are all made of wood materials.

[0008] The cavity can be filled with cooling oil.

[0009] Preferably, the damping pad is formed by high-temperature vulcanization and compounding of cork granules and synthetic rubber.

[0010] By adopting the above technical solution, the damping pad formed by high-temperature vulcanization and compounding of cork granules and synthetic rubber can be used in transformer oil for a long time, can effectively reduce the vibration transmission between the transformer core, the clamping piece and the oil tank, and reduce the structure noise of the oil tank.

[0011] Preferably, in order to enable the oil tank to have comprehensive sound insulation, a top cover is provided on the top of the box body, and a noise reduction component is also provided at the bottom of the top cover.

[0012] In summary, the present application includes at least one of the following beneficial technical effects: for the noise reduction structure of the reactor box body, a sound insulation barrier is formed by multiple noise reduction components around the inner wall of the box body. The vibration of the iron core and the winding is first transmitted to the second cardboard layer through the transformer oil, blocked by the second cardboard layer, then isolated by the transformer oil layer in the cavity, and finally blocked by the first cardboard and the second cardboard. The vibration is blocked multiple times, changing the transmission path of the vibration along the transformer oil, so that the energy of the vibration reaching the box wall is very small, effectively reducing the vibration of the box body, and thus effectively reducing the noise. Description of the Drawings

[0013] Figure 1 It is a schematic top view structure diagram of the box body used to embody the present application in the embodiment.

[0014] Figure 2 is Figure 1 The enlarged view of part A in

[0015] Figure 3 It is a schematic sectional view structure diagram of the top cover used to embody the present application in the embodiment.

[0016] Description of the reference numerals: 1. Box body; 2. Top cover; 3. Magnetic shielding component; 4. Noise reduction component; 41. Damping pad; 42. First cardboard layer; 43. Second cardboard layer; 44. Screw; 45. Cushion block; 46. Nut; 47. Cavity. Detailed Description of the Invention

[0017] The following will further describe the present application in detail with reference to the attached Figures 1-3 drawings.

[0018] The embodiment of the present application discloses a noise reduction structure for a reactor box body, which is applied to the box body of the reactor. Refer to Figures 1-2, on both sides of the inner wall of the box body 1, magnetic shielding components 3 are symmetrically arranged. On the inner wall of the box body 1, multiple groups of noise reduction components 4 are also arranged side by side. The noise reduction components 4 and the magnetic shielding components 3 are combined and surround the circumferential side of the inner wall of the box body 1. The noise reduction component 4 includes a vibration damping pad 41, a first cardboard layer 42, a second cardboard layer 43 and a connecting piece. The connecting piece includes a screw 44, a cushion block 45 and a nut 46. One end of the screw 44 is fixed with a base, and the base is welded and fixed on the box wall of the box body 1. The number of the screws 44 is multiple, and the multiple screws 44 are uniformly fixed on the box wall of the box body 1. The vibration damping pad 41, the first cardboard layer 42 and the second cardboard layer 43 are all sleeved on the screw 44 in sequence. The vibration damping pad 41 is arranged close to the box wall of the box body 1. The first cardboard layer 42 is attached to the vibration damping pad 41. The cushion block 45 is arranged between the first cardboard layer 42 and the second cardboard layer 43. The nut 46 is screwed on the screw 44 and is located outside the second cardboard layer 43. A cavity 47 is formed between the first cardboard layer 42 and the second cardboard layer 43. The cavity 47 can be filled with cooling oil, and a retaining wall can be formed in cooperation with the cooling oil in the cavity 47.

[0019] In order to avoid affecting the magnetic field, the screw 44, the cushion block 45 and the nut 46 are all made of wood materials.

[0020] The vibration damping pad 41 is formed by high-temperature vulcanization and compounding of cork granules and synthetic rubber, and can be used in transformer oil for a long time. It can effectively reduce the vibration transmission between the transformer core, the clamping parts and the oil tank, and reduce the structure noise of the oil tank.

[0021] Refer to Figure 3 , in order to soundproof the entire oil tank, a top cover 2 is arranged on the top of the box body 1, and a noise reduction component 4 is also arranged at the bottom of the top cover 2.

[0022] The implementation principle of a noise reduction structure of a reactor box body in an embodiment of the present application is as follows:

[0023] The magnetic shielding components 3 and the noise reduction components 4 form a sound insulation barrier around the inner wall of the box body 1. The vibration of the iron core and the winding is transmitted to the box body 1 through the transformer oil, causing the box body 1 to vibrate. By setting the sound insulation barrier, the vibration is first transmitted to the second cardboard layer 43 through the transformer oil. The second cardboard layer 43 conducts blocking, and then through the isolation of the transformer oil layer in the cavity 47, and finally through the blocking of the first cardboard and the second cardboard, the vibration is blocked multiple times, changing the transmission path of the vibration along the transformer oil, so that the energy of the vibration when it reaches the box wall is already very small, effectively reducing the vibration of the box body 1, and thus effectively reducing the noise.

[0024] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A reactor housing noise reduction structure, applied to a reactor housing (1), wherein magnetic shielding components (3) are symmetrically arranged on both sides of the inner wall of the housing (1), characterized in that: A plurality of groups of noise reduction components (4) are arranged side by side on the inner wall of the box (1); the noise reduction components (4) and the magnetic shielding components (3) are combined and surround the inner wall of the box (1); the noise reduction components (4) include a vibration reduction pad (41), a first paperboard layer (42), a second paperboard layer (43) and a connecting piece; the connecting piece includes a screw (44), a cushion block (45) and a nut (46); a base is fixed at one end of the screw (44); the base is welded and fixed to the box wall of the box (1); a plurality of the screws (44) are provided, and the plurality of screws (44) are evenly fixed to the box (1). ), the vibration-damping pad (41), the first paperboard layer (42) and the second paperboard layer (43) are all sleeved on the screw (44) in sequence, the vibration-damping pad (41) is arranged close to the wall of the box body (1), the first paperboard layer (42) is arranged in contact with the vibration-damping pad (41), the cushion block (45) is arranged between the first paperboard layer (42) and the second paperboard layer (43), the nut (46) is screwed onto the screw (44) and is located outside the second paperboard layer (43), and a cavity (47) is formed between the first paperboard layer (42) and the second paperboard layer (43).

2. The reactor box noise reduction structure according to claim 1, characterized in that: The screw rod (44), the cushion block (45) and the nut (46) are all made of wood material.

3. The reactor box noise reduction structure according to claim 1, characterized in that: The cavity (47) can be filled with cooling oil.

4. The reactor box noise reduction structure according to claim 1, characterized in that: A top cover (2) is arranged on the top of the box body (1), and a noise reduction component (4) is also arranged on the bottom of the top cover (2).

Images