Iron core clamping system for reducing iron core loss and noise

Abstract

The utility model relates to an iron core clamping system capable of reducing iron core loss and noise. The iron core clamping system capable of reducing iron core loss and noise comprises a drawstring plate, one end of the drawstring plate is welded with a drawstring connecting plate, one end of the drawstring connecting plate is connected with a screw rod, and one end of the screw rod is connected with a nut assembly; the two ends of the drawstring plates are welded with drawstring connecting plates, and one clamping system at least comprises two groups of drawstring plates; the nut assembly comprises a thick nut and a thin nut; the surface of the screw rod is sleeved with an insulating washer, and the thin nut is arranged between the thick nut and the insulating washer; according to the iron core clamping system capable of reducing the iron core loss and noise, the problem that the drawstring clamping force generated by the torque cannot be accurately and quantitatively controlled is solved, the magnitude of the iron core clamping force can be directly and quantitatively controlled, and the purpose of reducing the iron core loss and the noise level is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of transformer structure technology, specifically relating to a core clamping system for reducing core loss and noise. Background Technology

[0002] The clamping force of a large transformer core has the most important and direct impact on the core loss and noise level. If the clamping force is too small, the laminations become loose, causing vibration and increasing amplitude, thus raising losses and noise. If the clamping force is too large, the core laminations are prone to waviness, further increasing losses and noise. There is an optimal range of clamping force for the core to keep losses and noise low; therefore, the clamping force should be reasonably controlled within this optimal range.

[0003] Tightening of pull screws is often achieved by applying torque with a torque wrench. The torque corresponds to the clamping force along the screw direction and is greatly affected by the torque tightening coefficient. The torque tightening coefficient is related to the surface finish and lubrication process, and its value cannot be precisely quantified and is highly variable. Therefore, the method of applying torque cannot precisely quantify and control the clamping force. Utility Model Content

[0004] The purpose of this invention is to provide a core clamping system with a simple structure and reasonable design that reduces core loss and noise in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A core clamping system for reducing core loss and noise includes a pull plate, one end of which is welded to a pull plate connecting plate, one end of which is connected to a screw, and one end of which is connected to a nut assembly.

[0007] As a further optimization of this utility model, both ends of the pull belt plate are welded with pull belt connecting plates, and a clamping system includes at least two sets of pull belt plates.

[0008] As a further optimization of this utility model, the nut assembly includes a thick nut and a thin nut.

[0009] As a further optimization of this utility model, an insulating washer is sleeved on the surface of the screw, and the thin nut is disposed between the thick nut and the insulating washer.

[0010] As a further optimization of this utility model, a through hole is provided on the surface of the screw.

[0011] As a further optimization of this utility model, the system also includes a pull plate, and a side fixing plate is rotatably connected to the side of the pull plate.

[0012] As a further optimization of this utility model, a slot is formed on the surface of the side fixing plate, the screw is inserted into the slot, and a pin is provided on the surface of the side fixing plate, the pin passing through the side fixing plate and the through hole.

[0013] As a further optimization of this utility model, a fixing frame is provided on the surface of the pull plate, and an adjusting rod is slidably connected inside the fixing frame. One end of the adjusting rod is movably connected to the side fixing plate, and the angle between the side fixing plate and the pull plate is adjusted by adjusting the position of the adjusting rod on the surface of the fixing frame.

[0014] As a further optimization of this utility model, the surface of the fixing frame is provided with a sliding groove, and the fixing frame is fixedly connected to the adjusting rod by the sliding groove connecting screw.

[0015] The beneficial effects of this utility model are as follows: This utility model solves the problem that the clamping force generated by the torque cannot be accurately quantified and controlled, and the clamping force of the iron core can be directly quantified and controlled, thereby achieving the purpose of reducing iron core loss and noise level. Attached Figure Description

[0016] Figure 1 This is an assembly diagram of the iron core clamping system of this utility model;

[0017] Figure 2 This is the utility model Figure 1 A schematic diagram of the side structure;

[0018] Figure 3 This is a schematic diagram of the pull strap clamping structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the pull plate of this utility model.

[0020] In the diagram: 1, pull strap plate; 2, pull strap connecting plate; 3, screw; 4, insulating washer; 5, thick nut; 6, thin nut; 7, pull plate; 71, side fixing plate; 72, adjusting rod; 73, fixing bracket. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1

[0023] refer to Figures 1 to 3The structure shown is a core clamping system for reducing core loss and noise. The system includes a pull plate 1, a pull connecting plate 2 welded to one end of the pull plate 1, a screw 3 connected to one end of the pull connecting plate 2, and a nut assembly connected to one end of the screw 3.

[0024] Both ends of the pull belt plate 1 are welded with pull belt connecting plates 2, and a clamping system includes at least two sets of pull belt plates 1.

[0025] The nut assembly includes a thick nut 5 and a thin nut 6.

[0026] An insulating washer 4 is fitted onto the surface of the screw 3, and the thin nut 6 is positioned between the thick nut 5 and the insulating washer 4.

[0027] It should be noted that the clamping system uses multiple straps to clamp the inner and outer sides of the upper and lower yokes of the iron core. This strap structure includes a strap plate 1, a strap connecting plate 2, a screw 3, an insulating washer 4, a thin nut 5, and a thick nut 6. One end of the strap connecting plate 2 is welded to the strap plate 1, and the other end is threaded and connected to the screw 3. The screw is connected to a special tool, and a pulling force is applied along the direction of the screw 3 to tighten the straps. Then, the thin nut 5 and the thick nut 6 are tightened to lock the screw 3. The direction of the applied pulling force is the direction of the iron core clamping force, allowing for precise control of the iron core clamping force, regardless of the screw 3 tightening coefficient.

[0028] This application solves the problem that the clamping force generated by torque cannot be precisely quantified and controlled. The magnitude of the core clamping force can be directly quantified and controlled, thereby reducing core loss and noise levels.

[0029] Example 2

[0030] Based on the above embodiment 1, and referring to Figure 4 As shown in the diagram, the screw 3 has a through hole on its surface. The system also includes a pull plate 7, which is rotatably connected to a side fixing plate 71.

[0031] The side fixing plate 71 has a slot on its surface, the screw 3 is inserted into the slot, and the side fixing plate 71 has a pin on its surface, the pin passing through the side fixing plate 71 and the through hole.

[0032] A fixing frame 73 is provided on the surface of the pull plate 7. An adjusting rod 72 is slidably connected inside the fixing frame 73. One end of the adjusting rod 72 is movably connected to the side fixing plate 71. The angle between the side fixing plate 71 and the pull plate 7 is adjusted by adjusting the position of the adjusting rod 72 on the surface of the fixing frame 73.

[0033] The surface of the fixing frame 73 is provided with a sliding groove, and the fixing frame 73 is fixedly connected to the adjusting rod 72 by the sliding groove connecting screw.

[0034] In this embodiment, the angle of the side fixing plate 71 is adjusted to accommodate more types of screws 3.

[0035] It should also be noted that the iron core itself has a corresponding shell structure. After pulling the screw 3 to clamp the iron core, it is then secured by the nut assembly after the tensioning strap is pulled to prevent rebound.

[0036] In this embodiment, the through hole can be located behind the nut assembly without affecting the fixation after tightening.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0041] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A core clamping system for reducing core loss and noise, characterized in that, The system includes a pull belt plate (1), one end of which is welded to a pull belt connecting plate (2), one end of which is connected to a screw (3), and one end of which is connected to a nut assembly.

2. The core clamping system for reducing core loss and noise according to claim 1, characterized in that: The nut assembly includes a thick nut (5) and a thin nut (6).

3. The core clamping system for reducing core loss and noise according to claim 2, characterized in that: An insulating washer (4) is fitted on the surface of the screw (3), and the thin nut (6) is positioned between the thick nut (5) and the insulating washer (4).

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