Low-frequency vibration isolation adjustable assembly of distribution transformer

Abstract

The utility model discloses a low-frequency vibration isolation adjustable assembly of a distribution transformer, which relates to the technical field of distribution transformers and comprises a sleeve, a first connecting piece, a second connecting piece, a first connecting piece and a second connecting piece, the spring connecting disc is arranged in the sleeve and is connected with the sleeve; the upper spring is arranged at the upper end of the spring connecting disc, and the first end of the upper spring is connected with the upper surface of the spring connecting disc; the lower spring is arranged at the lower end of the spring connecting disc, and the first end of the lower spring is connected with the lower surface of the spring connecting disc; and the bottom of the end cover is connected with the second end of the upper spring. Through the adjustable vibration isolation design, vibration transmitted to a foundation or a surrounding structure is reduced, so that noise is reduced, the service life of equipment is prolonged, the operation stability of a power grid is improved, and vibration and noise reduction of the distribution transformer is achieved by dynamically matching vibration characteristics.

Description

Technical Field

[0001] This utility model belongs to the field of power distribution transformer technology, specifically relating to a low-frequency vibration isolation adjustable component for power distribution transformers. Background Technology

[0002] With the acceleration of urbanization and the dense layout of power facilities in my country, distribution transformers, as core equipment of urban power grids, are increasingly being installed near noise-sensitive areas such as residential and commercial districts, facing higher requirements for operational stability and environmental adaptability. In the process of new urbanization, the spatial distance between power distribution facilities and residential areas is constantly shrinking. The low-frequency vibration noise (100~500Hz band) generated by transformers during operation has become a prominent problem affecting the living environment and a key factor restricting urban power facility planning.

[0003] During operation, distribution transformers generate low-frequency vibrations of 5-100Hz (mainly concentrated in the 10-50Hz range) due to factors such as core magnetostriction, changes in winding electromagnetic force, and load fluctuations. Traditional vibration isolation measures (such as rubber pads and spring isolators) have limited effectiveness in the low-frequency range and cannot adapt to changes in vibration characteristics under different operating conditions.

[0004] Currently, rubber and metal spring vibration isolators commonly used in engineering practice have significant technical drawbacks: rubber isolators are prone to creep failure under long-term loads and have relatively high dynamic stiffness at low frequencies; while metal spring isolators can provide a lower natural frequency, they require additional dampers to suppress high-frequency resonance amplification effects. Although Helmholtz resonance vibration isolation devices can achieve vibration absorption at specific frequencies, they have limitations in engineering applications, such as a narrow effective bandwidth and large structural dimensions.

[0005] Moreover, traditional passive vibration isolation technology has a high natural frequency in the low-frequency range (<200Hz) and the vibration isolation efficiency is significantly reduced. Therefore, there is an urgent need for an adjustable low-frequency vibration isolation component for distribution transformers. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and design a low-frequency vibration isolation adjustable component for distribution transformers to effectively suppress the low-frequency vibration generated during the operation of distribution transformers.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A low-frequency vibration isolation adjustable component for a distribution transformer includes:

[0009] A sleeve, wherein the sleeve is a hollow cylindrical structure, and a first connecting member is provided on the outer side of the sleeve;

[0010] A spring connecting disc, wherein the spring connecting disc is disposed inside the sleeve and connected to the sleeve;

[0011] An upper spring is located at the upper end of the spring connecting plate, and the first end of the upper spring is connected to the upper surface of the spring connecting plate.

[0012] The lower spring is located at the lower end of the spring connecting plate, and the first end of the lower spring is connected to the lower surface of the spring connecting plate.

[0013] An end cap, the bottom of which is connected to the second end of the upper spring.

[0014] As a further technical solution of this utility model, the sleeve includes a first sleeve and a second sleeve, a spring connecting plate is provided on the inner side of the first sleeve, the bottom of the inner side of the second sleeve is connected to the second end of the lower spring, and a first connecting member is provided on the outer side of the first sleeve.

[0015] Furthermore, a gap is provided between the first sleeve and the second sleeve.

[0016] As a further technical solution of this utility model, the upper spring and the lower spring are tower springs, and the tower bottom of the upper spring and the tower bottom of the lower spring are respectively connected to the upper side and the lower side of the spring connecting plate; the tower top of the upper spring is connected to the end cap.

[0017] As a further technical solution of this utility model, the end cap is a cylindrical end cap, and the outer side of the cylindrical end cap is provided with threads.

[0018] As a further technical solution of this utility model, a rotating handle is provided on the upper side of the end cap.

[0019] As a further technical solution of this utility model, the first connecting member includes: a first support member, a second support member, and a connecting member. The first support member and the second support member are provided with through holes, and the connecting member passes through the through holes and connects with the first support member and the second support member.

[0020] As a further technical solution of this utility model, the upper spring, the lower spring and the spring connecting disc are welded together, the upper spring is welded to the end cover and the lower spring is welded to the third sleeve.

[0021] As a further technical solution of this utility model, the first sleeve and the second sleeve are made of stainless steel, carbon steel, or aluminum alloy.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. This utility model reduces the transmission of vibration to the foundation or surrounding structure through an adjustable vibration isolation design, thereby reducing noise, extending equipment life and improving the stability of power grid operation. By dynamically matching vibration characteristics, it achieves vibration reduction and noise reduction for distribution transformers.

[0024] 2. A spring connecting plate is used to fix the upper and lower springs. The upper and lower springs provide fixed support for the sleeve. The end cap and sleeve are used to connect and fix the upper and lower springs. The sleeve is connected to the external elastic component to act on the distribution transformer to achieve vibration reduction.

[0025] 3. In order to adjust the installation height of the upper and lower springs, the end cap is a cylindrical end cap, and the outer side of the cylindrical end cap is threaded.

[0026] 4. To facilitate the rotation of the end cap, a rotating handle is provided on the upper side of the end cap for easy rotation. At the same time, a screw hole is provided on the upper end of the end cap for easy rotation with a screwdriver.

[0027] 5. By setting a connector to connect with the external support spring, when the external support spring is subjected to force and vibration reduction, it drives the connector to move the first sleeve up and down, causing the internal upper and lower springs to move up and down, thus achieving the vibration reduction effect. Attached Figure Description

[0028] Figure 1 This utility model provides a structural diagram of a low-frequency vibration isolation adjustable component for a power distribution transformer.

[0029] Figure 2 This is a cross-sectional view of a low-frequency vibration isolation adjustable component for a power distribution transformer proposed in this utility model.

[0030] Figure 3 This is a top view of a low-frequency vibration isolation adjustable component for a power distribution transformer proposed in this utility model;

[0031] As shown in the figure:

[0032] 10-Sleeve, 20-Spring connecting plate, 30-Upper spring, 40-Lower spring, 50-End cap;

[0033] 101-First sleeve, 102-Second sleeve, 103-First connector;

[0034] 131-First support member, 132-Second support member, 133-Connector, 134-Through hole;

[0035] 501 - Rotate handle, 502 - Screw hole. Detailed Implementation

[0036] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples:

[0037] It should be noted that the structures, colors, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0038] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] like Figures 1 to 3 As shown, this utility model proposes a low-frequency vibration isolation adjustable component for a distribution transformer, comprising:

[0040] Sleeve 10, the sleeve is a hollow cylindrical structure, and a first connector 103 is provided on the outer side of the sleeve;

[0041] Spring connecting disc 20, which is disposed inside the sleeve and connected to the sleeve;

[0042] The upper spring 30 is located at the upper end of the spring connecting plate and the first end of the upper spring is connected to the upper surface of the spring connecting plate.

[0043] The lower spring 40 is located at the lower end of the spring connecting plate, and the first end of the lower spring is connected to the lower surface of the spring connecting plate.

[0044] End cap 50, the bottom of which is connected to the second end of the upper spring.

[0045] This utility model provides an adjustable low-frequency vibration isolation device for distribution transformers, an intelligent device that effectively suppresses low-frequency vibrations generated during the operation of distribution transformers. Its core objective is to reduce the transmission of vibrations to the foundation or surrounding structures through adjustable vibration isolation design, thereby reducing noise, extending equipment life, and improving the stability of power grid operation.

[0046] A spring connecting plate is used to fix the upper and lower springs. The upper and lower springs provide fixed support for the sleeve. The end cap and sleeve are used to connect and fix the upper and lower springs. The sleeve is connected to the external elastic component to act on the distribution transformer to achieve vibration reduction.

[0047] See Figure 2 In this embodiment of the utility model, the sleeve 10 includes a first sleeve 101 and a second sleeve 102. A spring connecting plate 20 is provided on the inner side of the first sleeve 101. The bottom inner side of the second sleeve 102 is connected to the second end of the lower spring 40. A first connecting member 103 is provided on the outer side of the first sleeve 101.

[0048] The first sleeve is used to fix the upper and lower springs. The first sleeve can move up and down via the spring connecting plate. Its function is to restrict the extension and retraction direction of the upper and lower springs, allowing them to move within the first sleeve, thus acting as a limiting mechanism. The second sleeve is fixed to the shock absorber housing.

[0049] A gap is provided between the first sleeve 101 and the second sleeve 102 to facilitate the movement of the first sleeve.

[0050] In this embodiment of the present invention, the upper spring and the lower spring can be cylindrical helical springs, conical helical springs (tower springs) or non-circular helical springs. Preferably, the upper spring and the lower spring of the present invention are tower springs, and the tower bottom of the upper spring and the tower bottom of the lower spring are respectively connected to the upper side and the lower side of the spring connecting plate; the tower top of the upper spring is connected to the end cap.

[0051] The end cap is used to fix the height of the upper and lower springs. The end cap connects to the shock absorber housing. The structure of the end cap can be designed according to the installation structure of the shock absorber housing, and can be square, round, or other shapes suitable for safety. To facilitate adjustment of the installation height of the upper and lower springs, the end cap is cylindrical, and threads are provided on the outer side of the cylindrical end cap. An internal thread is provided at the installation position of the end cap to mate with the external thread, allowing for easy adjustment of the installation position of the upper and lower springs by rotating the end cap.

[0052] To facilitate the rotation of the end cap, a rotating handle 501 is provided on the upper side of the end cap 50. The rotating handle is a strip-shaped protrusion, which facilitates the rotation of the end cap. At the same time, a screw hole 502 is provided on the upper end of the end cap, which can be rotated with a screwdriver for easy operation.

[0053] See Figure 1In this embodiment of the present invention, the first connecting member 103 includes: a first support member 131, a second support member 132, and a connecting member 133. Through holes 134 are provided on the first support member 131 and the second support member 132. The connecting member 133 passes through the through holes 134 and connects to the first support member 131 and the second support member 132. The connecting member is rotatably connected to the first and second support members and is connected to an external support spring via the first connecting member. When the external support spring is subjected to vibration damping, it drives the connecting member to move the second sleeve up and down, causing the internal upper and lower springs to move up and down, thus achieving a vibration damping effect.

[0054] To prevent the upper and lower springs from detaching during vibration damping, the upper and lower springs are welded to the spring connecting disc, the upper spring is welded to the end cap, and the lower spring is welded to the second sleeve. The first and second sleeves are made of stainless steel, carbon steel, or aluminum alloy.

[0055] The present invention proposes a low-frequency vibration isolation adjustable component for a power distribution transformer. In specific use, the second sleeve is connected to the bottom inner side of the shock absorber housing, and the four first connecting parts on the outer side of the first sleeve are respectively connected to air springs. The end cap is connected to the upper end of the shock absorber housing, which can be completely installed. The assembly is convenient and improves the assembly efficiency of the shock absorber.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-frequency vibration isolation adjustable component for a distribution transformer, characterized in that, include: A sleeve, wherein the sleeve is a hollow cylindrical structure, and a first connecting member is provided on the outer side of the sleeve; A spring connecting disc, wherein the spring connecting disc is disposed inside the sleeve and connected to the sleeve; An upper spring is located at the upper end of the spring connecting plate, and the first end of the upper spring is connected to the upper surface of the spring connecting plate. The lower spring is located at the lower end of the spring connecting plate, and the first end of the lower spring is connected to the lower surface of the spring connecting plate. An end cap, the bottom of which is connected to the second end of the upper spring.

2. The adjustable low-frequency vibration isolation component for a distribution transformer according to claim 1, characterized in that, The sleeve includes a first sleeve and a second sleeve. A spring connecting plate is provided on the inner side of the first sleeve. The bottom inner side of the second sleeve is connected to the second end of the lower spring. A first connecting member is provided on the outer side of the first sleeve.

3. The adjustable low-frequency vibration isolation component for a distribution transformer according to claim 2, characterized in that, A gap is provided between the first sleeve and the second sleeve.

4. The adjustable low-frequency vibration isolation component for a distribution transformer according to claim 1, characterized in that, The upper and lower springs are tower springs, with the top of the tower spring being the first end and the bottom of the tower spring being the second end.

5. The adjustable low-frequency vibration isolation component for a distribution transformer according to claim 1, characterized in that, The end cap is a cylindrical end cap, and the outer side of the cylindrical end cap is threaded.

6. The adjustable low-frequency vibration isolation component for a distribution transformer according to claim 1, characterized in that, A rotating handle is provided on the upper side of the end cap.

7. The adjustable low-frequency vibration isolation component for a distribution transformer according to claim 2, characterized in that, The first connector includes a first support, a second support, and a connector. The first and second support are provided with through holes, and the connector passes through the through holes to connect with the first and second support.

8. The adjustable low-frequency vibration isolation component for a distribution transformer according to claim 2, characterized in that, The upper spring, lower spring and spring connecting plate are welded together, the upper spring is welded to the end cap and the lower spring is welded to the second sleeve.

9. The adjustable low-frequency vibration isolation component for a distribution transformer according to claim 2, characterized in that, The first sleeve and the second sleeve are made of stainless steel, carbon steel, or aluminum alloy.

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