Muffler for transformer

Abstract

The silencer for the transformer comprises a supporting mechanism arranged at the bottom of the transformer, a noise reduction mechanism used for eliminating vibration is arranged in an inner cavity of the supporting mechanism, a bearing mechanism used for supporting the noise reduction mechanism is further arranged in the inner cavity of the supporting mechanism, and a damping mechanism used for preventing contact collision is arranged between the supporting mechanism and the bearing mechanism. After the noise reduction mechanism bears load deformation, certain potential energy is stored, when vibration is negative pressure, the noise reduction mechanism releases the load, stress distribution of the noise reduction mechanism is evenly and progressively decreased from inside to outside, the effect of low stroke and high compensation force can be achieved, then the resonant frequency transmitted from the upper supporting plate can be eliminated, the effect of eliminating resonance is achieved, and the noise reduction effect is improved. The vibration reduction mechanism can be matched with the noise reduction mechanism to form a secondary vibration reduction protection effect, and the phenomenon of collision caused by direct contact between the supporting mechanism and the bearing mechanism can be prevented, so that resonance generated by the transformer within the frequency range of 45-55Hz can be effectively eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and particularly relates to a silencer for a transformer. Background Art

[0002] A transformer is a basic power transmission and distribution device, which is widely used in industries, agriculture, transportation, urban communities and other fields.

[0003] In the prior art, a utility model patent document with the publication number of CN221175914U discloses a transformer tank and a transformer, including an outer shell and a liquid cooling and heat dissipation system. The outer shell has a cubic structure and contains multiple edges. The liquid cooling and heat dissipation system includes a coolant pipeline and a coolant supply device connected in sequence. The coolant pipeline is located at the edge, and the coolant supply device is located at the lower part outside the outer shell. By including a coolant pipeline and a coolant supply device connected in sequence in the transformer tank, the transformer tank is cooled by circulating coolant, thereby improving the heat dissipation efficiency; the coolant pipeline is located at the edge and does not reduce the mechanical structure strength of the transformer tank.

[0004] Although the above-mentioned shock-absorbing and noise-reducing three-phase dry-type transformer can solve corresponding technical problems, the transformer generates relatively large noise during operation. Although the transformer is installed at a high position in an open area, the noise generated during its operation still seriously affects the nearby residents and causes serious noise pollution.

[0005] Therefore, a silencer for a transformer is proposed. Content of the Utility Model

[0006] The purpose of the utility model is to provide a silencer for a transformer to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the main technical solutions adopted by the utility model include:

[0008] A silencer for a transformer, comprising:

[0009] A support mechanism provided at the bottom of the transformer, with a noise reduction mechanism for eliminating vibration provided in its inner cavity. A support mechanism for supporting the noise reduction mechanism is also provided in the inner cavity of the support mechanism. A shock absorption mechanism for preventing contact and collision is provided between the support mechanism and the support mechanism;

[0010] Among them, the noise reduction mechanism includes an upper disc spring and a lower disc spring provided on the support mechanism from top to bottom in sequence. Two upper disc springs and two lower disc springs are respectively arranged up and down, and one of the upper disc springs is in contact with its adjacent lower disc spring.

[0011] As a preferred technical solution, the support mechanism includes a lower support plate and an upper support plate. An outer support sleeve is integrally formed at the top of the lower support plate, and an inner support sleeve is integrally formed at the bottom of the upper support plate. The bottom end of the inner support sleeve penetrates into the inner cavity of the outer support sleeve. The upper disc spring, the lower disc spring, the supporting mechanism and the shock-absorbing mechanism are all arranged in the inner cavity of the inner support sleeve, and a guiding mechanism is arranged between the inner support sleeve and the outer support sleeve.

[0012] As a preferred technical solution, the supporting mechanism includes a support plate arranged in the inner cavity of the inner support sleeve. A support sleeve is integrally formed at the top of the support plate. The upper disc spring and the lower disc spring are both sleeved on the surface of the support sleeve. The lower disc spring located below contacts the support plate. A cavity for placing the upper disc spring and the lower disc spring is formed among the support plate, the support sleeve, the upper support plate and the inner support sleeve.

[0013] As a preferred technical solution, the supporting mechanism further includes a pressure plate arranged below the upper support plate and located in the cavity. A through hole for the top end of the support plate to pass through is formed at the center of the pressure plate. A pressure ring is fixedly connected to the bottom of the pressure plate, and the bottom of the pressure ring contacts the top of the upper disc spring located above.

[0014] As a preferred technical solution, the shock-absorbing mechanism includes an upper silica gel pad glued between the upper support plate and the pressure plate, and a lower silica gel pad with the same shape and size as the upper silica gel pad is glued between the lower support plate and the support plate.

[0015] As a preferred technical solution, the upper silica gel pad, the lower silica gel pad, the diameter of the support plate and the outer diameter of the pressure plate are equal.

[0016] As a preferred technical solution, the guiding mechanism includes a guide sleeve fixedly connected to the inner wall surface of the outer support sleeve. A guide post slides through the inner cavity of the guide sleeve. A convex block is fixedly connected to the bottom end of the guide post, and the convex block is fixedly connected to the outer surface of the inner support sleeve.

[0017] As a preferred technical solution, a fluororubber pad is glued to the bottom of the lower support plate and the top of the upper support plate respectively. A plurality of mounting holes are formed in the lower support plate, the upper support plate and the fluororubber pad respectively and are distributed at equal intervals in a ring shape.

[0018] The utility model has at least the following beneficial effects:

[0019] In this application, after the noise reduction mechanism deforms under load, it stores a certain amount of potential energy. When the vibration is a negative pressure, the noise reduction mechanism releases the load, and its stress distribution decreases uniformly from the inside to the outside, enabling the effect of low stroke and high compensation force. Furthermore, it can eliminate the resonance frequency transmitted from the upper support plate, achieving the effect of eliminating resonance. The damping mechanism can not only cooperate with the noise reduction mechanism to form a secondary damping protection effect, but also prevent the phenomenon of direct contact and collision between the support mechanism and the supporting mechanism, thereby effectively eliminating the resonance generated by the transformer in the frequency range of 45 - 55 Hz, and having a simple structure, light weight and being convenient for quick installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structure schematic diagram of the muffler for a transformer of the present utility model;

[0021] Figure 2 is a three-dimensional sectional structure schematic diagram of the muffler for a transformer of the present utility model;

[0022] Figure 3 is a three-dimensional sectional structure schematic diagram of the noise reduction mechanism, the support plate and the support sleeve of the muffler for a transformer of the present utility model;

[0023] Figure 4 is a schematic diagram of the assembled state of the structure of the muffler for a transformer of the present utility model.

[0024] In the figure: 100, support mechanism; 110, lower support plate; 111, outer support sleeve; 120, upper support plate; 121, inner support sleeve; 200, noise reduction mechanism; 210, upper butterfly spring; 220, lower butterfly spring; 300, supporting mechanism; 310, support plate; 311, support sleeve; 320, pressure plate; 330, retaining ring; 400, damping mechanism; 410, upper silica gel pad; 420, lower silica gel pad; 500, guiding mechanism; 510, guide sleeve; 520, guide post; 530, convex block; 600, fluororubber pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-4, an embodiment of the present utility model provides a silencer for a transformer, including: a support mechanism 100 provided at the bottom of the transformer, a noise reduction mechanism 200 for eliminating vibration, a supporting mechanism 300 for supporting the noise reduction mechanism 200, and a shock absorption mechanism 400 for preventing the support mechanism 100 from coming into contact and collision with the supporting mechanism 300. The noise reduction mechanism 200 and the supporting mechanism 300 are both provided in the inner cavity of the support mechanism 100, and the shock absorption mechanism 400 is provided between the support mechanism 100 and the supporting mechanism 300. The central axes of the support mechanism 100, the noise reduction mechanism 200, the supporting mechanism 300, and the shock absorption mechanism 400 are all on the same straight line; the noise reduction mechanism 200 includes an upper butterfly spring 210 and a lower butterfly spring 220 that are sequentially provided on the supporting mechanism 300 from top to bottom. There are two upper butterfly springs 210 and two lower butterfly springs 220 respectively arranged up and down, and one of the upper butterfly springs 210 is in contact with its adjacent lower butterfly spring 220.

[0027] Among them, the support mechanism 100 includes a lower support plate 110 and an upper support plate 120 that are arranged in parallel. An outer support sleeve 111 is integrally formed at the top of the lower support plate 110, and an inner support sleeve 121 is integrally formed at the bottom of the upper support plate 120. The bottom end of the inner support sleeve 121 penetrates into the inner cavity of the outer support sleeve 111. The upper butterfly spring 210, the lower butterfly spring 220, the supporting mechanism 300, and the shock absorption mechanism 400 are all provided in the inner cavity of the inner support sleeve 121. At least two guiding mechanisms 500 that are symmetrically arranged and used for guiding are provided between the inner support sleeve 121 and the outer support sleeve 111. By fixing the upper support plate 120 to the bottom of the transformer, the transformer can be supported.

[0028] Among them, the supporting mechanism 300 includes a support plate 310 provided in the inner cavity of the inner support sleeve 121. A support sleeve 311 is integrally formed at the top of the support plate 310. The upper butterfly spring 210 and the lower butterfly spring 220 are both sleeved on the surface of the support sleeve 311. The lower butterfly spring 220 located below is in contact with the support plate 310. A cavity for placing the upper butterfly spring 210 and the lower butterfly spring 220 is formed among the support plate 310, the support sleeve 311, the upper support plate 120, and the inner support sleeve 121. Through the supporting mechanism 300, a support foundation can be provided for the noise reduction mechanism 200, so that the noise reduction mechanism 200 can be stably placed in the cavity.

[0029] Among them, the supporting mechanism 300 further includes a pressing plate 320 provided below the upper support plate 120 and located in the cavity. A through hole for the top end of the support plate 310 to pass through is opened at the center of the pressing plate 320. Two pressing rings 330 that are arranged up and down are fixedly connected to the bottom of the pressing plate 320. The bottom of the pressing ring 330 is in contact with the top of the upper butterfly spring 210 located above. The pressing plate 320 and the pressing rings 330 can move synchronously with the upper support plate 120 to apply pressure to the noise reduction mechanism 200, so that the noise reduction mechanism 200 can be evenly stressed.

[0030] Among them, the shock absorption mechanism 400 includes an upper silicone pad 410 glued between the upper support plate 120 and the pressing plate 320. A lower silicone pad 420 with the same shape and size as the upper silicone pad 410 is glued between the lower support plate 110 and the supporting plate 310. There are two lower silicone pads 420 arranged up and down between the lower support plate 110 and the supporting plate 310. Through the upper silicone pad 410, the direct contact between the upper support plate 120 and the supporting plate 310 can be avoided. Through the lower silicone pad 420, the direct contact between the lower support plate 110 and the supporting plate 310 can be avoided, thereby effectively preventing metal collisions.

[0031] Among them, the diameters of the upper silicone pad 410, the lower silicone pad 420, the supporting plate 310, and the outer diameter of the pressing plate 320 are equal.

[0032] Among them, the guiding mechanism 500 includes a guide sleeve 510 fixedly connected to the inner wall surface of the outer support sleeve 111. A guide post 520 is slidably penetrated through the inner cavity of the guide sleeve 510. The bottom end of the guide post 520 is fixedly connected with a convex block 530. The convex block 530 is fixedly connected to the outer surface of the inner support sleeve 121. Through the guiding mechanism 500, the inner support sleeve 121 can be guided, so that the inner support sleeve 121 can stably move vertically.

[0033] Among them, a fluororubber pad 600 is respectively glued to the bottom of the lower support plate 110 and the top of the upper support plate 120. A plurality of mounting holes are respectively formed in the lower support plate 110, the upper support plate 120, and the fluororubber pad 600 and are distributed at equal intervals in a ring shape. The diameters of the lower support plate 110, the upper support plate 120, and the fluororubber pad 600 are equal. Through the fluororubber pad 600, the direct contact between the upper support plate 120 and the transformer can be avoided, and at the same time, it has excellent weather aging resistance, which helps to extend the service life of the support mechanism 100.

[0034] The working principle of the present utility model is as follows: The upper support plate 120 is installed at the four corners of the bottom of the transformer. The transformer drives the upper support plate 120 to move downward. The upper support plate 120 drives the convex block 530 and the guide post 520 to move synchronously. The guide post 520 slides in the inner cavity of the guide sleeve 510. The upper support plate 120 also drives the upper silicone pad 410, the pressing plate 320, and the retaining ring 330 located above to move downward synchronously. The retaining ring 330 exerts pressure on the upper butterfly spring 210 and the lower butterfly spring 220, so that the noise reduction mechanism 200 bears the load. After bearing the load and deforming, a certain amount of potential energy is stored. When the vibration is a negative pressure, the noise reduction mechanism 200 releases the load, and its stress distribution decreases uniformly from the inside to the outside, which can achieve the effect of high compensation force with low stroke, and thus can eliminate the resonance frequency transmitted from the upper support plate 120, realizing the effect of eliminating resonance of the transformer. Through the shock absorption mechanism 400, it can not only cooperate with the noise reduction mechanism 200 to form a secondary shock absorption protection effect, but also prevent the phenomenon of direct contact and collision between the support mechanism 100 and the supporting mechanism 300, thereby effectively eliminating the resonance generated by the transformer in the frequency range of 45 - 55 Hz.

[0035] Parts not involved in the present utility model are the same as the prior art or can be implemented by using the prior art. Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A transformer silencer, characterized in that: include: A support mechanism (100) disposed at the bottom of the transformer has an inner cavity provided with a noise reduction mechanism (200) for eliminating vibration, the inner cavity of the support mechanism (100) is also provided with a supporting mechanism (300) for supporting the noise reduction mechanism (200), and a shock absorbing mechanism (400) for preventing contact and collision is provided between the support mechanism (100) and the supporting mechanism (300); The noise reduction mechanism (200) comprises an upper butterfly spring (210) and a lower butterfly spring (220) which are arranged on the supporting mechanism (300) from top to bottom, wherein two of the upper butterfly spring (210) and two of the lower butterfly spring (220) are arranged one above the other, and one of the upper butterfly springs (210) is in contact with its adjacent lower butterfly spring (220).

2. The transformer silencer according to claim 1, characterized in that: The support mechanism (100) comprises a lower support plate (110) and an upper support plate (120); an outer support sleeve (111) is integrally formed at the top of the lower support plate (110); an inner support sleeve (121) is integrally formed at the bottom of the upper support plate (120); the bottom end of the inner support sleeve (121) penetrates into the inner cavity of the outer support sleeve (111); the upper butterfly spring (210), the lower butterfly spring (220), the supporting mechanism (300) and the shock absorbing mechanism (400) are all arranged in the inner cavity of the inner support sleeve (121); and a guide mechanism (500) is arranged between the inner support sleeve (121) and the outer support sleeve (111).

3. The transformer silencer according to claim 2, characterized in that: The supporting mechanism (300) comprises a supporting plate (310) disposed in the inner cavity of an inner support sleeve (121); a supporting sleeve (311) is integrally formed on the top of the supporting plate (310); the upper butterfly spring (210) and the lower butterfly spring (220) are both sleeved on the surface of the supporting sleeve (311); the lower butterfly spring (220) located at the bottom contacts the supporting plate (310); and a cavity for accommodating the upper butterfly spring (210) and the lower butterfly spring (220) is formed between the supporting plate (310), the supporting sleeve (311), the upper supporting plate (120) and the inner support sleeve (121).

4. The transformer silencer according to claim 3, characterized in that: The supporting mechanism (300) further comprises a pressure plate (320) disposed below the upper support plate (120) and located in the cavity, a through hole for the top end of the support plate (310) to pass through is provided at the center of the pressure plate (320), a pressure ring (330) is fixedly connected to the bottom of the pressure plate (320), and the bottom of the pressure ring (330) contacts the top of the upper butterfly spring (210) located above.

5. The transformer silencer according to claim 4, characterized in that: The shock absorbing mechanism (400) comprises an upper silicone pad (410) glued between the upper support plate (120) and the pressing plate (320), and a lower silicone pad (420) having the same shape and size as the upper silicone pad (410) is glued between the lower support plate (110) and the supporting plate (310).

6. The transformer silencer according to claim 5, characterized in that: The diameters of the upper silicone pad (410), the lower silicone pad (420), the supporting plate (310), and the outer diameter of the pressing plate (320) are equal.

7. The transformer silencer according to claim 2, characterized in that: The guide mechanism (500) comprises a guide sleeve (510) fixedly connected to the inner wall surface of the outer support sleeve (111), a guide column (520) slidably passing through the inner cavity of the guide sleeve (510), a protrusion (530) fixedly connected to the bottom end of the guide column (520), and the protrusion (530) fixedly connected to the outer surface of the inner support sleeve (121).

8. The transformer silencer according to claim 2, characterized in that: A fluororubber pad (600) is glued to the bottom of the lower support plate (110) and the top of the upper support plate (120), respectively. The lower support plate (110), the upper support plate (120) and the fluororubber pad (600) are respectively provided with a plurality of mounting holes equidistantly distributed in an annular shape.

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