A noise reduction device for substations

Abstract

This invention provides a noise reduction device for substations, relating to the field of power equipment technology. The device includes a soundproof outer shell covering the substation body, a base mechanism located at the top and bottom, and an inner soundproof layer. The soundproof outer shell and the inner soundproof layer form a double-layer soundproof structure, weakening sound waves through air damping in the soundproof cavity. The inner wall of the inner soundproof layer is provided with a honeycomb-shaped sound-absorbing layer to further dissipate sound energy. The base mechanism includes a horizontal frame and multiple vibration-damping and noise-absorbing supports. The supports are elastically damped and slidably connected to the hollow support legs via a connecting frame, and are equipped with a reverse-acting rotating unit and a deformable buffer plate. When the substation vibrates, the connecting frame moves vertically to drive the rotating unit to rotate, and the deformable buffer plate counteracts the vibration through a reverse force, reducing the vibration amplitude and noise radiation. This invention blocks noise from the propagation path, combining vibration energy absorption and dynamic cancellation, significantly improving the noise reduction effect, and is suitable for high-frequency vibration and noise environments such as substations.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and in particular to a noise reduction device for substations. Background Technology

[0002] With the continuous improvement of people's living standards, residential electricity consumption has increased rapidly, and the number of substations in residential areas has increased year by year. A substation is an infrastructure component of a power system, a key facility for transforming voltage and distributing electrical energy. Its core equipment, the transformer, generates periodic vibrations during operation due to electromagnetic forces and the magnetostrictive effect of the iron core, thus radiating low-frequency noise (typically 100-500Hz). Furthermore, the operation of cooling fans, electromagnetic vibrations of the windings, and structural resonance also exacerbate noise pollution.

[0003] Noise reduction methods for substations mainly include installing soundproof walls and using vibration damping pads. Soundproof walls are usually designed with a single-layer structure, which is difficult to effectively block the penetration of low-frequency noise. Although vibration damping pads play a role in buffering vibration to a certain extent, their rigid connection causes vibration to be transmitted to the outer shell through the support, forming secondary noise. Ordinary sound-absorbing materials have low absorption efficiency for low-frequency sound waves. Summary of the Invention

[0004] The purpose of this invention is to provide a noise reduction device for substations to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A substation noise reduction device includes a soundproof outer shell covering the substation body and two base mechanisms respectively located at the upper and lower ends of the substation body. The substation body has an inner soundproof layer, forming a soundproof cavity between the inner soundproof layer and the substation body. The soundproof cavity weakens sound waves through air damping. The inner wall surface of the inner soundproof layer has a honeycomb-shaped sound-absorbing layer. The base mechanisms include a horizontal frame and multiple vibration-damping and sound-absorbing supports corresponding to the bottom of the substation body. Each vibration-damping and sound-absorbing support includes a connecting frame, a deformable buffer plate, hollow support legs, and two opposing counter-rotating units. Multiple hollow support legs are fixed to the horizontal frame, and the bottom of the connecting frame is connected to the corresponding hollow support leg by a vertical elastic damping sliding mechanism. The counter-rotating unit is rotatably disposed between two of the hollow support legs, and abuts against the bottom of the deformable buffer plate. When the connecting frame moves vertically relative to the hollow support leg, the connecting frame acts on the end of the counter-rotating unit, causing it to rotate around its own axis.

[0007] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In one alternative: the connecting frame is provided with a support rod at a position corresponding to the hollow support foot, the support rod slides into the interior of the hollow support foot, and the connecting frame is connected to the top of each hollow support foot through a shock-absorbing spring; the end of the reverse-acting rotating unit extends into the interior of the hollow support foot in a rotatable manner and is connected to the support rod.

[0009] In one alternative: the outer wall of the support rod is provided with a reaction gear along its axis; the reaction rotation unit includes a reaction shaft and a reaction plate; the reaction shaft is located between and rotatably connected to two hollow support legs; the end of the reaction shaft extending into the hollow support legs is provided with a reaction gear; the reaction gear meshes with the reaction gear on the support rod; a support arm frame is provided on the reaction shaft; the reaction plate is attached to the surface of the deformation buffer plate away from the transformer substation body; and the reaction plate is fixedly connected to the end of the support arm frame away from the reaction shaft.

[0010] In one alternative: the surface of the deformation buffer plate away from the transformer body has a rubber protrusion, the reaction strip is integrally connected to the surface of the rubber protrusion, the surface of the rubber protrusion has a damping adhesive and a constraint layer, and the rubber protrusion can deform under force.

[0011] In one alternative: two opposing rotating units are symmetrically arranged, and the arm frames in the two opposing rotating units are connected by at least one damping spring.

[0012] In one alternative: a ring of silencing pools is provided around the bottom edge of the soundproof shell; side sound guiding components are provided on both sides of the soundproof shell; and a sound absorbing component is provided on the back of the soundproof shell; one end of the side sound guiding component passes through the soundproof shell and extends into the inner sound insulation layer, and the other end of the side sound guiding component extends into the silencing pool; one end of the sound absorbing component extends into the soundproof shell and extends between the two transformer substation bodies, and the other end of the sound absorbing component extends into the silencing pool.

[0013] In one alternative: the side sound guide assembly includes a noise reduction plate and at least one first sound guide tube. The noise reduction plate is disposed between the inner wall of the inner sound insulation layer and the transformer substation body. The noise reduction plate is made of a porous material and has holes on its surface. The first sound guide tube passes through the side wall of the sound insulation shell and is fixedly connected to it. The other end of the first sound guide tube extends into the interior of the silencing pool.

[0014] In one alternative embodiment: the silencing pool includes a second sound guide tube and at least two sound-absorbing struts. One end of the second sound guide tube has a branch sound guide tube corresponding to the sound-absorbing strut. The branch sound guide tube passes through the sound insulation shell and the inner sound insulation layer and extends into the interior of the inner sound insulation layer. The other end of the second sound guide tube extends into the interior of the silencing pool. One end of the sound-absorbing strut is connected to the corresponding branch sound guide tube, and the other end extends between the two transformer substation bodies. Each sound-absorbing strut has multiple sound-absorbing balls on its outer wall to absorb sound waves between the two transformer substation bodies.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects:

[0016] In the substation noise reduction device provided by this invention, the soundproof outer shell and the inner soundproof layer form an air damping cavity, which, combined with the honeycomb sound-absorbing layer, double-blocks the sound wave propagation path, especially for low-frequency noise; the base mechanism drives the deformable buffer plate through the reverse-acting rotating unit to dynamically offset the vertical vibration energy of the transformer station, reducing the amplitude by more than 30%; the elastic damping sliding connection avoids rigid transmission of vibration, and the hollow support feet further absorb high-frequency vibration; the symmetrically arranged base mechanism can adapt to substations of different specifications, and is convenient for installation and maintenance. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the noise reduction device in one embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of the soundproof shell in one embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the transformer station installation structure in one embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the vibration damping and noise reduction support from one perspective in one embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the vibration damping and noise reduction support from another perspective in one embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the reverse-acting rotating unit structure in one embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the sound-absorbing component structure in one embodiment of the present invention.

[0025] Figure reference numerals: Soundproof shell 100, transformer station body 200, base mechanism 300, cross frame 310, shock-absorbing and noise-reducing support 320, connecting frame 321, deformable buffer plate 322, hollow support foot 323, reverse action rotating unit 324, reaction action rotating shaft 3241, support arm rotating frame 3242, reaction action strip 3243, reaction action gear 3244, support foot rod 325, shock-absorbing spring part 326, reaction action gear condition 327, damping spring component 328, inner sound insulation layer 400, sound insulation cavity 410, sound absorption component 500, second sound guide tube 510, branch sound guide tube 520, sound absorption support rod 530, sound absorption ball 540, side sound guide component 600, noise reduction plate 610, first sound guide tube 620, silencer pool 700. Detailed Implementation

[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] The left, right, up, and down positions of the various components shown in the attached diagram are just one arrangement method; the specific positions should be set according to specific needs.

[0028] In one embodiment, such as Figures 1-4As shown, a substation noise reduction device includes a soundproof outer shell 100 covering the outside of a transformer substation body 200 and two base mechanisms 300 respectively disposed at the upper and lower ends of the transformer substation body 200; the transformer substation body 200 has an inner soundproof layer 400 inside, and a soundproof cavity 410 is formed between the inner soundproof layer 400 and the transformer substation body 200, the soundproof cavity 410 weakens sound waves through air damping; the inner wall surface of the inner soundproof layer 400 has a honeycomb-shaped sound-absorbing layer; the base mechanism 300 includes a cross frame 310 and a plurality of vibration damping and sound-absorbing supports 320 corresponding to the bottom of the transformer substation body 200, the vibration damping and sound-absorbing supports 320 including connecting frames. 321, a deformable buffer plate 322, hollow support legs 323, and two opposing counter-rotating units 324; the hollow support legs 323 are multiple and fixed on the cross frame 310, and the bottom of the connecting frame 321 is connected to the corresponding hollow support legs 323 by a vertical elastic damping sliding manner; the counter-rotating unit 324 is rotatably disposed between two of the hollow support legs 323, and the counter-rotating unit 324 abuts against the bottom of the deformable buffer plate 322. When the connecting frame 321 moves vertically relative to the hollow support legs 323, the connecting frame 321 can act on the end of the counter-rotating unit 324 to make it rotate around its own axis.

[0029] In this embodiment of the invention, the transformer substation body 200 vibrates during operation, generating noise. The soundproof outer shell 100 and the inner soundproof layer 400 form a double-layer structure to cover the outside of the transformer substation body 200. This double-layer structure utilizes the air layer for sound insulation and weakens sound waves through air damping. Furthermore, the honeycomb-shaped sound-absorbing layer on the surface of the inner soundproof layer 400 dissipates sound energy through gaps and its own elastic vibration, thereby blocking noise propagation along its path. Since the two base mechanisms 300 are respectively located in the transformer substation... At the upper and lower ends of the transformer substation body 200, the vibration of the transformer substation body 200 will cause the connecting frame 321 in the base mechanism 300 to vibrate. The connecting frame 321 vibrates vertically relative to the hollow support foot 323. Due to the elastic damping effect of the sliding mechanism between the connecting frame 321 and the hollow support foot 323, it can play a role in vibration buffering. At the same time, it avoids direct contact between the transformer substation body 200 and the soundproof shell 100 and the inner soundproof layer 400, and avoids the transmission of vibration through rigid connection, thereby reducing vibration transmission and absorbing vibration energy, and thus reducing noise radiation. When the frame 321 moves vertically due to vibration, it also acts on the counteracting rotating unit 324 to make it rotate around its own axis; for the base mechanism 300 located at the bottom of the transformer substation body 200, when the connecting frame 321 moves downward, the counteracting rotating unit 324 rotates and pushes the deformable buffer plate 322 upward, using the upper surface of the deformable buffer plate 322 to adhere to the bottom of the transformer substation body 200 to reduce its vibration, and the deformable buffer plate 322 has an upward force to buffer the downward vibration of the transformer substation body 200 by canceling it out; when the connecting frame When 321 moves upward, the opposing rotating unit 324 rotates and pulls the deformable buffer plate 322 downward. The deformable buffer plate 322 can pull the transformer substation body 200 downward through its connection with the connecting frame 321 to reduce the amplitude of its upward movement, thereby reducing the vibration amplitude of the transformer substation body 200 and thus reducing the generation of noise. The base mechanism 300 located at the top of the transformer substation body 200 buffers the vibration of the transformer substation body 200 in the same way, and its action is opposite to that of the base mechanism 300 located at the bottom of the transformer substation body 200.

[0030] In one embodiment, such as Figures 1-5As shown, the connecting frame 321 is provided with a support rod 325 at a position corresponding to the hollow support foot 323. The support rod 325 slides into the hollow support foot 323. The connecting frame 321 is connected to the top of each hollow support foot 323 through a shock-absorbing spring part 326. The end of the reverse-acting rotating unit 324 extends into the hollow support foot 323 in a rotatable manner and is connected to the support rod 325. In this embodiment of the invention, the connecting frame 321 moves relative to the hollow support foot 323 as it vibrates with the transformer substation body 200. The damping spring 326 can buffer the vibration of the connecting frame 321 and reduce the vibration transmission between the transformer substation body 200 and the hollow support leg 323. The support leg rod 325 moves with the connecting frame 321 and acts on the end of the reverse action rotating unit 324, so that it rotates around its own axis. The rotating reverse action rotating unit 324 acts on the deformable buffer plate 322 in a pulling and pushing manner, thereby using the vibration of the transformer substation body 200 itself as a driving force to act in the reverse direction on the transformer substation body 200, further buffering its vibration and reducing the generation of noise.

[0031] In one embodiment, such as Figures 1-6As shown, the outer wall of the support rod 325 is provided with a reaction gear condition 327 along its axis. The reverse-acting rotating unit 324 includes a reaction shaft 3241 and a reaction plate 3243. The reaction shaft 3241 is located between and rotatably connected to two hollow support legs 323. The end of the reaction shaft 3241 that extends into the hollow support leg 323 is provided with a reaction gear 3244, which meshes with the reaction gear condition 327 on the support rod 325. A support arm frame 3242 is provided on the reaction shaft 3241. The reaction plate 3243 is attached to the surface of the deformation buffer plate 322 away from the transformer substation body 200, and the reaction plate 3243 and the support arm frame 3242 are far apart. The end of the rotating shaft 3241 is fixedly connected; in this embodiment of the invention, the support rod 325 moves vertically due to the vibration of the transformer substation body 200. The support rod 325 rotates the reaction shaft 3241 through the meshing of the reaction gear 327 and the reaction gear 3244. The support arm frame 3242 rotates with the reaction shaft 3241, so that the reaction plate 3243 rotates around the reaction shaft 3241. The reaction shaft 3241 acts on the deformation buffer plate 322, so that the deformation buffer plate 322 acts in the opposite direction on the bottom or top of the transformer substation body 200. Therefore, the vibration of the transformer substation body 200 can be used as a power to act in the opposite direction on the transformer substation body 200 to buffer its vibration, which can play a role in protection and noise reduction. Two opposing rotating units 324 are symmetrically arranged, and the arm frame 3242 in the two opposing rotating units 324 are connected by at least one damping spring 328. Since the two opposing rotating units 324 are symmetrical, their rotation directions are always opposite. When the two opposing rotating units 324 rotate, they are always subjected to elastic damping from the damping spring 328. Therefore, to a certain extent, the vertical movement of the elastic damping support rod 325 buffers the vibration of the transformer substation body 200.

[0032] In one embodiment, such as Figures 2-6 As shown, the deformable buffer plate 322 has a rubber protrusion 3221 on the surface away from the transformer station body 200. The reaction strip 3243 is integrated with the surface of the rubber protrusion 3221. The surface of the rubber protrusion 3221 has damping rubber and a constraint layer. The rubber protrusion 3221 can be deformed under force. In this embodiment of the invention, the rubber protrusion 3221 is subjected to vibration from the transformer station body 200 and pull and push from the reverse action rotating unit 324. Both of these effects are expended through deformation and reverse action. Its deformation converts the vibration kinetic energy into heat energy through internal friction.

[0033] In one embodiment, such as Figure 1 , Figure 2 and Figure 3As shown, a ring of silencing pools 700 is also provided around the bottom edge of the soundproof housing 100. Side sound guiding components 600 are provided on both sides of the soundproof housing 100, and a sound absorbing component 500 is provided on the back of the soundproof housing 100. One end of the side sound guiding component 600 passes through the soundproof housing 100 and extends into the inner soundproof layer 400, while the other end extends into the silencing pool 700. One end of the sound absorbing component 500 extends into the soundproof housing 100 and extends between the two transformer substation bodies 200, while the other end extends into the silencing pool 700. In this embodiment of the invention, the end of the side sound guiding component 600 extending into the inner soundproof layer 400 is attached to... In the inner wall of the inner sound insulation layer 400, the side sound guiding component 600 typically uses a smooth, hard pipe wall (such as metal or plastic) to reflect sound waves and propagate them along the pipe direction. The noise eventually enters the silencer 700. The sound waves act on the flowing medium inside the silencer 700, and the sound energy is dissipated by friction through the flowing medium inside the silencer 700, thus reducing noise. The sound absorbing component 500 extends into the end surface between the two transformer substation bodies 200 to absorb the noise in that space. It scatters sound waves through the irregular surface, reducing echoes. After some noise enters the sound absorbing component 500, the sound absorbing component 500 propagates the sound waves along the pipe direction, and the noise eventually enters the silencer 700.

[0034] In one embodiment, such as Figures 1-3 As shown, the side sound guide assembly 600 includes a noise reduction plate 610 and at least one first sound guide tube 620. The noise reduction plate 610 is disposed between the inner wall of the inner sound insulation layer 400 and the transformer station body 200. The noise reduction plate 610 is made of a porous material and has holes on its surface. The first sound guide tube 620 passes through the side wall of the sound insulation shell 100 and is fixedly connected to it. The other end of the first sound guide tube 620 extends into the interior of the silencing pool 700. In this embodiment of the invention, the holes on the surface of the noise reduction plate 610 allow sound waves to enter the cavity through the holes and resonate to dissipate energy. Whenever the noise generated by the vibration of the sound insulation shell 100 and the noise inside the sound insulation shell 100 are emitted to the first sound guide tube 620, they will be guided into the interior of the silencing pool 700 along the first sound guide tube 620, and the noise energy will be dissipated by the flow of the flowing medium.

[0035] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 7As shown, the sound-absorbing component 500 includes a second sound guide tube 510 and at least two sound-absorbing support rods 530. One end of the second sound guide tube 510 has a branch sound guide tube 520 corresponding to the sound-absorbing support rod 530. The branch sound guide tube 520 passes through the sound insulation shell 100 and the inner sound insulation layer 400 and extends into the interior of the inner sound insulation layer 400. The other end of the second sound guide tube 510 extends into the interior of the silencing pool 700. One end of the sound-absorbing support rod 530 is connected to the corresponding branch sound guide tube 520, and the other end extends between the two transformer substation bodies 200. Each sound-absorbing support rod 530 has a plurality of sound-absorbing balls 540 on its outer wall for absorbing sound waves between the two transformer substation bodies 200. In this embodiment of the invention, multiple sound-absorbing balls 540 are divided into two groups and are respectively opposite to the side walls of the two transformer substation bodies 200. The sound-absorbing balls 540 deform under force. The surface of the sound-absorbing balls 540 abuts against the side wall of the transformer substation body 200 to buffer the lateral vibration of the transformer substation body 200 through deformation. When the vibration sound wave enters the porous structure of the sound-absorbing balls 540, the air vibrates in the pores and the friction with the pore wall converts the sound energy into heat energy (dissipated through viscous resistance). The branch sound guide tube 520 and the second sound guide tube 510 can guide the noise generated by the vibration of the soundproof shell 100 and the noise inside the soundproof shell 100 into the silencer pool 700, and consume the noise energy by the flow of the flowing medium.

[0036] The above embodiment provides a substation noise reduction device, the working principle of which is as follows:

[0037] 1. Double-layer sound insulation structure and sound wave damping reduction

[0038] The soundproof outer shell 100 and the inner soundproof layer 400 work together: the soundproof outer shell 100 is located outside the transformer substation body 200, forming a double-layer soundproof structure with the inner soundproof layer 400. The soundproof cavity 410 between the two weakens the sound wave energy and blocks the noise propagation path through the air damping effect.

[0039] Honeycomb sound-absorbing layer: The honeycomb structure of the inner wall of the 400 inner sound insulation layer dissipates sound energy through pore resonance and elastic vibration, further absorbing high-frequency noise.

[0040] 2. Vibration buffering and reverse vibration damping of the base mechanism 300

[0041] The core functions of the 320 vibration damping and noise reduction support:

[0042] Vertical elastic damping buffer: The connecting frame 321 is elastically connected to the hollow support foot 323 through the shock-absorbing spring part 326 to buffer the vertical vibration of the transformer station body 200 and avoid rigid transmission.

[0043] Dynamic response of the reverse-acting rotating unit 324:

[0044] When vibrating downwards: the connecting frame presses down on the reaction gear 327, driving the reaction gear 3244 to rotate, and the support arm swivel 3242 pushes the reaction plate 3243 to push the deformation buffer plate 322 upwards, thus counteracting the downward impact of the transformer station body 200.

[0045] When vibrating upwards: the reverse-acting rotating unit 324 rotates, and the deformation buffer plate 322 pulls down the transformer station body 200 to suppress its upward amplitude.

[0046] Symmetrical damping design: Two opposing rotating units are linked by damping spring 328 to provide continuous elastic damping and enhance vibration energy dissipation.

[0047] 3. Energy conversion between the deformable buffer plate 322 and the rubber protrusion 3221

[0048] When the deformable buffer plate 322 is subjected to a reverse force, the rubber protrusion 3221 on its surface converts the vibration kinetic energy into heat energy through elastic deformation and internal friction, further reducing noise radiation.

[0049] 4. Noise directing treatment of side-guided sound and sound-absorbing components

[0050] Side-guided sound assembly 600: The noise reduction plate 610 absorbs mid-to-high frequency noise through a porous structure, and the remaining sound waves are introduced into the silencing pool 700 through the first sound guide tube 620, where they are dissipated by the flow of fluid medium.

[0051] Sound-absorbing component 500: The sound-absorbing ball 540 on the sound-absorbing strut 530 directly contacts the side wall of the transformer body 200, buffering lateral vibration and dissipating sound energy using the porous structure; the branch sound guide tube 520 and the second sound guide tube 510 guide the noise into the silencer pool 700 for centralized processing.

[0052] 5. Final noise reduction of the silencing pool 700

[0053] All sound guide tubes (first sound guide tube 620, second sound guide tube 510) concentrate the noise into the silencing pool 700, and through the friction and turbulence of the flowing medium (such as water or silencing material), the sound energy is completely converted into heat energy.

[0054] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A substation noise reduction device, comprising a soundproof outer shell covering the substation body and two base mechanisms respectively disposed at the upper and lower ends of the substation body, characterized in that, The transformer station body has an internal sound insulation layer, and a sound insulation cavity is formed between the internal sound insulation layer and the transformer station body. The sound insulation cavity weakens sound waves through air damping. The inner wall surface of the inner sound insulation layer has a honeycomb-shaped sound-absorbing layer; The base mechanism includes a cross frame and multiple shock-absorbing and noise-absorbing supports that are connected to the bottom of the transformer station body. The shock-absorbing and noise-absorbing supports include a connecting frame, a deformable buffer plate, a hollow support foot, and two oppositely arranged counter-acting rotating units. The hollow support legs are multiple and fixed on the horizontal frame. The bottom of the connecting frame is connected to the corresponding hollow support legs by a vertical elastic damping sliding method. The reverse-acting rotating unit is rotatably positioned between the two hollow support legs, and the reverse-acting rotating unit abuts against the bottom of the deformation buffer plate; When the connecting frame moves vertically relative to the hollow support foot, the connecting frame can act on the end of the rotating unit with the opposite action, so that it rotates around its own axis. The connecting frame is provided with a support rod at a position corresponding to the hollow support foot, and the support rod slides into the interior of the hollow support foot; The connecting frame is connected to the top of each hollow support leg via a shock-absorbing spring. The end of the reverse-acting rotating unit extends rotatably into the hollow support leg and is connected to the support leg rod. The outer wall of the support rod is provided with a reaction tooth condition along its axis, and the reaction rotation unit includes a reaction shaft and a reaction plate. The reaction shaft is located between two of the hollow support legs and is rotatably connected to the hollow support legs. The end of the reaction shaft that extends into the hollow support leg is provided with a reaction gear, which meshes with the reaction gear on the support leg rod. The reaction shaft is equipped with a support arm frame, and the reaction strip is attached to the surface of the deformation buffer plate away from the transformer station body, and the reaction strip is fixedly connected to the end of the support arm frame away from the reaction shaft.

2. The substation noise reduction device according to claim 1, characterized in that, The surface of the deformation buffer plate away from the transformer station body has a rubber protrusion. The reaction strip is connected to the surface of the rubber protrusion as a whole. The surface of the rubber protrusion has a damping rubber and a constraint layer. The rubber protrusion can be deformed under force.

3. The substation noise reduction device according to claim 1, characterized in that, Two opposing rotating units are symmetrically arranged, and the support arms of the two opposing rotating units are connected by at least one damping spring.

4. The substation noise reduction device according to any one of claims 1-3, characterized in that, The bottom of the soundproof shell is also provided with a ring of sound-absorbing pools along its edge, and both sides of the soundproof shell are provided with side sound guiding components, and the back of the soundproof shell is provided with sound-absorbing components. One end of the side sound guide component passes through the sound insulation shell and extends into the inner sound insulation layer, while the other end of the side sound guide component extends into the anechoic pool. One end of the sound-absorbing component extends into the sound insulation shell and between the two transformer substation bodies, while the other end of the sound-absorbing component extends into the silencing pool.

5. The substation noise reduction device according to claim 4, characterized in that, The side sound guide assembly includes a noise reduction plate and at least one first sound guide tube; The noise reduction plate is located between the inner wall of the inner sound insulation layer and the transformer station body. The noise reduction plate is made of porous material and has holes on its surface. The first sound guide tube passes through the side wall of the soundproof shell and is fixedly connected to it, and the other end of the first sound guide tube extends into the interior of the silencing pool.

6. The substation noise reduction device according to claim 4, characterized in that, The sound-absorbing assembly includes a second sound guide tube and at least two sound-absorbing struts; One end of the second sound guide tube has a branch sound guide tube corresponding to the sound-absorbing support rod. The branch sound guide tube passes through the sound insulation shell and the inner sound insulation layer and extends into the interior of the inner sound insulation layer. The other end of the second sound guide tube extends into the interior of the silencing pool. One end of the sound-absorbing strut is connected to the corresponding branch sound guide pipe, and the other end extends to the space between the two transformer substation bodies. Each sound-absorbing strut has multiple sound-absorbing balls on its outer wall to absorb sound waves between the two transformer substation bodies.

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