Noise reduction device for transformer substation

Abstract

The invention provides a transformer substation noise reduction device, and relates to the technical field of electrical equipment, the noise reduction device comprises a sound insulation shell covering the outside of a transformer substation body, a base mechanism arranged at the upper end and the lower end and an inner sound insulation layer, the sound insulation shell and the inner sound insulation layer form a double-layer sound insulation structure, and sound waves are weakened through air damping of a sound insulation cavity; the inner wall of the inner sound insulation layer is provided with a honeycomb-shaped sound absorption layer, sound energy is further dissipated, the base mechanism comprises a transverse frame part and a plurality of shock absorption and noise reduction supporting parts, the supporting parts are in elastic damping sliding connection with the hollow supporting foot parts through connecting frames, and the supporting parts are provided with reverse action rotating units and deformation buffer plates. The connecting frame vertically moves to drive the rotating unit to rotate, the deformation buffer plate counteracts vibration and reduces vibration amplitude and noise radiation through opposite acting force, noise is blocked from a transmission path, vibration energy absorption and dynamic counteracting are combined, the noise reduction effect is remarkably improved, and the device is suitable for high-frequency vibration noise environments such as a transformer substation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to a noise reduction device for a transformer substation. BACKGROUND

[0002] With the continuous improvement of people's living standards, the electricity consumption of residents is growing rapidly, and the number of transformer substations in residential areas is increasing year by year. The transformer substation is a kind of infrastructure in the power system, and it is a key facility for transforming voltage and distributing electric energy in the power system. The core equipment of the transformer substation, the transformer, will produce periodic vibration when it is running due to electromagnetic force and magnetic strain effect, and then radiate low-frequency noise (usually 100-500Hz). In addition, the operation of the cooling fan, electromagnetic vibration of the winding and structural resonance will also aggravate noise pollution.

[0003] The noise reduction method of the transformer substation mainly includes installing a sound insulation wall and using a shock-absorbing pad. The sound insulation wall is usually provided with a single-layer structure, and the single-layer sound insulation structure is difficult to effectively block the penetration of low-frequency noise. Although the shock-absorbing pad plays a role in buffering vibration to a certain extent, the rigid connection causes the vibration to be transmitted to the shell through the support, forming secondary noise. The ordinary sound-absorbing material has low absorption efficiency for low-frequency sound waves. SUMMARY

[0004] The purpose of the present application is to provide a noise reduction device for a transformer substation to solve the technical problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A noise reduction device for a transformer substation, comprising a sound insulation shell covering the outside of the transformer substation body and two base mechanisms respectively arranged at the upper and lower ends of the transformer substation body; the inside of the transformer substation body has an inner sound insulation layer, and a sound insulation cavity is formed between the inner sound insulation layer and the transformer substation body, and 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 comprises a cross-arch part and a plurality of shock-absorbing and sound-absorbing support parts connected to the bottom of the transformer substation body in correspondence; the shock-absorbing and sound-absorbing support part comprises a connecting frame, a deformation buffer plate, a hollow support leg part and two oppositely arranged reverse-acting rotary units; the hollow support leg part is fixed on the cross-arch part, and the bottom of the connecting frame is connected to the corresponding hollow support leg part in a vertical elastic damping sliding manner; the reverse-acting rotary unit is rotatably arranged between two hollow support leg parts, and the reverse-acting rotary unit abuts against the bottom of the deformation buffer plate, so that when the connecting frame moves vertically relative to the hollow support leg part, the connecting frame can act on the end of the reverse-acting rotary unit to make it rotate around its own axis.

[0007] On the basis of the above technical solutions, the present application also provides the following optional technical solutions:

[0008] In an alternative, the connecting frame is provided with a foot inserting rod at a position corresponding to the hollow foot support, the foot inserting rod sliding into the hollow foot support, and a damping spring connecting the connecting frame and the top of each hollow foot support; and the end of the reverse rotation unit extends into the hollow foot support and is connected to the foot inserting rod.

[0009] In an alternative, the foot inserting rod is provided with a reverse gear along its axis, the reverse rotation unit comprises a reverse rotation shaft and a reverse plate, the reverse rotation shaft is arranged between and rotatably connected to the two hollow foot supports, the end of the reverse rotation shaft extending into the hollow foot support is provided with a reverse gear, the reverse gear is engaged with the reverse gear of the foot inserting rod; the reverse rotation shaft is provided with an arm bracket, and the reverse plate is attached to the surface of the deformation buffer plate away from the transformer station body and is fixedly connected to the end of the arm bracket away from the reverse rotation shaft.

[0010] In an alternative, the surface of the deformation buffer plate away from the transformer station body is provided with a rubber convex layer, the reverse plate is integrally connected to the surface of the rubber convex layer, the surface of the rubber convex layer is provided with damping glue and a constraint layer, and the rubber convex layer can be deformed under force.

[0011] In an alternative, the two reverse rotation units are symmetrically arranged, and the arm brackets of the two reverse rotation units are connected by at least one damping spring.

[0012] In an alternative, the bottom of the sound insulation shell is further provided with a sound absorbing pool along its edge, the sound insulation shell is provided with a side sound guide assembly on each side, and the back of the sound insulation shell is provided with a sound absorbing assembly; one end of the side sound guide assembly extends into the inner sound insulation layer through the sound insulation shell, and the other end of the side sound guide assembly extends into the sound absorbing pool; one end of the sound absorbing assembly extends into the sound insulation shell and between the two transformer station bodies, and the other end of the sound absorbing assembly extends into the sound absorbing pool.

[0013] In an alternative, the side sound guide assembly comprises a noise reduction plate and at least one first sound guide pipe, the noise reduction plate is arranged 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 a hollow plate surface; the first sound guide pipe extends through the side wall of the sound insulation shell and is fixedly connected thereto, and the other end of the first sound guide pipe extends into the sound absorbing pool.

[0014] In an alternative: the sound attenuation tank comprises a second sound guide pipe and at least two sound absorption struts, one end of the second sound guide pipe has branch sound guide pipes corresponding to the sound absorption struts, the branch sound guide pipes pass through the sound insulation shell and the inner sound insulation layer and extend to the inside of the inner sound insulation layer, the other end of the second sound guide pipe extends into the inside of the sound attenuation tank, one end of the sound absorption strut is connected with the corresponding branch sound guide pipe, and the other end extends to between the two transformer station bodies, and a plurality of sound absorption balls for absorbing sound waves between the two transformer station bodies are arranged on the outer wall of each sound absorption strut.

[0015] With the above technical scheme, the present application has the following beneficial effects:

[0016] The sound attenuation device for transformer station provided by the present application has the following advantages: the sound insulation shell and the inner sound insulation layer form an air damping cavity, and the honeycomb sound absorption layer is combined to double-block the sound wave propagation path, especially for low-frequency noise; the base mechanism drives the deformed buffer plate through the reverse action rotating unit to dynamically offset the up-down vibration energy of the transformer station, and the amplitude is reduced by more than 30%; the elastic damping sliding connection avoids rigid vibration transmission, and the hollow supporting leg part further absorbs high-frequency vibration; the symmetrically arranged base mechanisms on the upper and lower sides can adapt to transformer stations of different specifications, and installation and maintenance are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical scheme in the prior art, the drawings needed to be used in the following specific embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a whole structure schematic diagram of the sound attenuation device in an embodiment of the present application.

[0019] Figure 2 It is an internal structure schematic diagram of the sound insulation shell in an embodiment of the present application.

[0020] Figure 3 It is a schematic diagram of the transformer station body installation structure in an embodiment of the present application.

[0021] Figure 4 It is a structure schematic diagram of one of the shock absorption and sound attenuation supporting parts in an embodiment of the present application from one perspective.

[0022] Figure 5 It is a structure schematic diagram of the shock absorption and sound attenuation supporting part in an embodiment of the present application from another perspective.

[0023] Figure 6 It is a structure schematic diagram of the reverse action rotating unit in an embodiment of the present application.

[0024] Figure 7 Structure diagram of sound absorption assembly in one embodiment of the present application.

[0025] Reference sign annotation: sound insulation shell 100, transformer station body 200, base mechanism 300, cross frame part 310, shock absorption and sound elimination support part 320, connecting frame 321, deformation buffer plate 322, hollow supporting leg part 323, reverse action rotating unit 324, reverse action rotating shaft 3241, supporting arm rotating frame 3242, reverse action plate strip 3243, reverse action gear 3244, supporting leg insertion rod 325, shock absorption spring part 326, reverse action tooth condition 327, damping spring piece 328, inner sound insulation layer 400, sound insulation cavity 410, sound absorption assembly 500, second sound guide pipe 510, branch sound guide pipe 520, sound absorption supporting rod 530, sound absorption ball 540, side sound guide assembly 600, noise reduction plate 610, first sound guide pipe 620, sound elimination pool 700. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0027] The left-right and up-down positions of various components given in the drawings are only one arrangement, and the specific positions are set according to specific needs.

[0028] In one embodiment, as Figures 1-4The utility model discloses a substation noise reduction device, including the sound insulation shell 100 of cover in the substation body 200 outside and two base mechanism 300 respectively set in the upper and lower end of substation body 200, the substation body 200 inside has the inner sound insulation layer 400 and forms a sound insulation chamber 410 between the inner sound insulation layer 400 and substation body 200, and air damping weakens sound wave through sound insulation chamber 410, the inner sound insulation layer 400 inner wall surface has the sound absorption layer of honeycomb shape, the base mechanism 300 includes the crosspiece 310 and a plurality of corresponding connection's shock absorption and sound elimination support part 320 of substation body 200 bottom, and the shock absorption and sound elimination support part 320 includes the connecting frame 321, the deformation buffer plate 322, the hollow support leg part 323 and two oppositely arranged reverse action rotating units 324, the hollow support leg part 323 is a plurality of and fixed in the crosspiece 310, and the connecting frame 321 bottom is connected with corresponding hollow support leg part 323 with the vertical elastic damping sliding mode, and the reverse action rotating unit 324 rotation is arranged between two hollow support leg part 323, and the reverse action rotating unit 324 is opposite with the deformation buffer plate 322 bottom and holds, when connecting frame 321 is opposite hollow support leg part 323 vertical movement, connecting frame 321 can act on the end of reverse action rotating unit 324, to make it rotate around its axis.

[0029] In the embodiment of the present application, the transformer station body 200 generates vibration when working, and noise is generated due to the vibration. The soundproof shell 100 and the inner soundproof layer 400 form a double-layer structure to cover the outside of the transformer station body 200. The double-layer structure can weaken sound waves by using air layer sound insulation and air damping. The honeycomb sound-absorbing layer on the surface of the inner soundproof layer 400 can dissipate sound energy through the gap and its own elastic vibration, thereby blocking the propagation path of noise to block the propagation of noise. Since the two base mechanisms 300 are respectively arranged at the upper and lower ends of the transformer station body 200, the vibration of the transformer station body 200 will drive the connecting frame 321 in the base mechanism 300 to vibrate vertically relative to the hollow support leg 323. Due to the elastic damping effect of the sliding mode between the connecting frame 321 and the hollow support leg 323, the vibration buffering effect can be achieved. At the same time, the direct contact between the transformer station body 200 and the soundproof shell 100 and the inner soundproof layer 400 is avoided, the vibration is prevented from being transmitted through rigid connection, the vibration transmission and vibration energy absorption are reduced, and thus the noise radiation is reduced. When the connecting frame 321 moves vertically due to vibration, it also acts on the reverse-acting rotating unit 324 to make it rotate around its own axis. For the base mechanism 300 located at the bottom of the transformer station body 200, when the connecting frame 321 moves downward, the reverse-acting rotating unit 324 rotates and presses upward the deformed buffer plate 322, the upper surface of the deformed buffer plate 322 is attached to the bottom of the transformer station body 200 to weaken the vibration, and the deformed buffer plate 322 has an upward force to buffer the downward vibration of the transformer station body 200 in a counteracting manner. When the connecting frame 321 moves upward, the reverse-acting rotating unit 324 rotates back and pulls the deformed buffer plate 322 downward. The deformed buffer plate 322 can pull the transformer station body 200 downward through the connection with the connecting frame 321 to reduce the amplitude of its upward movement, thereby reducing the vibration amplitude of the transformer station body 200 and further reducing the generation of noise. The base mechanism 300 located at the top of the transformer station body 200 buffers the vibration of the transformer station 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 station body 200.

[0030] In one embodiment, as Figures 1-5As shown, the connecting frame 321 is provided with a foot inserting rod 325 at the position corresponding to the hollow support leg part 323, the foot inserting rod 325 is slid into the hollow support leg part 323, and the connecting frame 321 and the top of each hollow support leg part 323 are connected through a damping spring part 326; the end of the reverse-acting rotating unit 324 extends into the hollow support leg part 323 and is connected with the foot inserting rod 325; in the embodiment, the connecting frame 321 moves relative to the hollow support leg part 323 following the vibration of the transformer station body 200, the damping spring part 326 can buffer the vibration of the connecting frame 321, and the vibration transmission between the transformer station body 200 and the hollow support leg part 323 is reduced, the foot inserting rod 325 moves following the connecting frame 321 and acts on the end of the reverse-acting rotating unit 324, so that the reverse-acting rotating unit 324 rotates around its own axis, and the reverse-acting rotating unit 324 acts on the deformation buffer plate 322 in a pulling and jacking manner, so that the vibration of the transformer station body 200 is reversely acted on the transformer station body 200 as power, the vibration of the transformer station body 200 is further buffered, and the noise is reduced.

[0031] In one embodiment, as Figures 1-6As shown, the outer wall of the foot inserting rod 325 is provided with a reaction tooth condition 327 along its axis, the reaction rotating unit 324 comprises a reaction rotating shaft 3241 and a reaction plate strip 3243, the reaction rotating shaft 3241 is arranged between the two hollow foot supporting parts 323 and is rotationally connected with the two hollow foot supporting parts 323, the end of the reaction rotating shaft 3241 extending into the hollow foot supporting part 323 is provided with a reaction gear 3244, the reaction gear 3244 is engaged with the reaction tooth condition 327 on the foot inserting rod 325; the reaction rotating shaft 3241 is provided with an arm rotating frame 3242, the reaction plate strip 3243 is attached to the surface of the deformation buffer plate 322 away from the transformer station body 200 and is fixedly connected with the end of the arm rotating frame 3242 away from the reaction rotating shaft 3241; in the embodiment of the present application, the foot inserting rod 325 moves vertically due to the vibration of the transformer station body 200, the foot inserting rod 325 is engaged with the reaction gear 3244 through the reaction tooth condition 327, so that the reaction rotating shaft 3241 rotates, the arm rotating frame 3242 rotates with the reaction rotating shaft 3241, so that the reaction plate strip 3243 rotates around the reaction rotating shaft 3241, the reaction rotating shaft 3241 acts on the deformation buffer plate 322, so that the deformation buffer plate 322 acts on the bottom or top end of the transformer station body 200 in the opposite direction, so the vibration of the transformer station body 200 can be used as power to act on the transformer station body 200 in the opposite direction, so as to buffer the vibration of the transformer station body 200, and the protection and noise reduction effects can be achieved. The two reaction rotating units 324 are symmetrically arranged, and the arm rotating frames 3242 in the two reaction rotating units 324 are connected through at least one damping spring 328; since the two reaction rotating units 324 are symmetrical, the rotating directions of the two reaction rotating units 324 always remain opposite, and the two reaction rotating units 324 always receive elastic damping action from the damping spring 328 when rotating, so that the vertical movement of the elastic damping foot inserting rod 325 is buffered to a certain extent, and the vibration of the transformer station body 200 is buffered.

[0032] In one embodiment, as shown in Figures 2-6 As shown, the surface of the deformation buffer plate 322 away from the transformer station body 200 has a rubber convex layer 3221, the reaction plate strip 3243 is connected with the surface of the rubber convex layer 3221 as a whole, the surface of the rubber convex layer 3221 has a damping rubber and a constraint layer, and the rubber convex layer 3221 can be deformed under force; in the embodiment of the present application, the vibration action from the transformer station body 200 and the pulling and pushing of the reaction rotating unit 324 are all consumed in the form of deformation and counteraction, and the deformation converts the vibration kinetic energy into heat energy through internal friction.

[0033] In one embodiment, as shown in Figure 1 , Figure 2 and Figure 3As shown, the soundproof shell 100 bottom is also provided with a circle of sound absorbing pool 700 along its edge, the soundproof shell 100 two sides are provided with side sound guide assembly 600, the soundproof shell 100 back is provided with sound absorbing assembly 500; the side sound guide assembly 600 one end passes through the soundproof shell 100 and extends to the inside of the inner sound insulation layer 400, the other end of the side sound guide assembly 600 extends to the inside of the sound absorbing pool 700, the sound absorbing assembly 500 one end extends to the inside of the soundproof shell 100 and extends to the between two transformer station bodies 200, the other end of the sound absorbing assembly 500 extends to the inside of the sound absorbing pool 700; in the embodiment of the application, the end of the side sound guide assembly 600 extending into the inner sound insulation layer 400 is attached to the inner wall of the inner sound insulation layer 400, the side sound guide assembly 600 usually adopts smooth and hard pipe wall (such as metal, plastic), the sound wave is made to propagate along the pipeline direction by reflection, the noise finally enters the inside of the sound absorbing pool 700, the sound wave acts on the flowing medium in the sound absorbing pool 700, the sound wave is frictionally dissipated sound energy by the flowing medium in the sound absorbing pool 700, and the noise is reduced; the end surface of the sound absorbing assembly 500 extending into the between two transformer station bodies 200 absorbs the noise of the space, the sound wave is scattered by irregular surface, and echo is reduced; after part of the noise enters the inside of the sound absorbing assembly 500, the sound absorbing assembly 500 makes the sound wave propagate along the pipeline direction, and the noise finally enters the inside of the sound absorbing pool 700.

[0034] In one embodiment, as shown in Figures 1-3 The side sound guide assembly 600 includes a noise reduction plate 610 and at least one first sound guide pipe 620, the noise reduction plate 610 is arranged 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 porous material, and the plate surface has holes; the first sound guide pipe 620 passes through the side wall of the soundproof shell 100 and is fixedly connected with the side wall, and the other end of the first sound guide pipe 620 extends to the inside of the sound absorbing pool 700; in the embodiment of the application, the holes on the surface of the noise reduction plate 610 can make the sound wave enter the cavity and resonate to dissipate energy; the noise generated by the vibration of the soundproof shell 100 and the noise in the inside of the soundproof shell 100 is guided into the inside of the sound absorbing pool 700 along the first sound guide pipe 620 when being emitted to the first sound guide pipe 620, and the noise energy is consumed by the flowing of the flowing medium.

[0035] In one embodiment, as shown in Figure 1 , Figure 2 , Figure 3 And Figure 7As shown, the sound absorption assembly 500 includes a second sound guide pipe 510 and at least two sound absorption support rods 530, one end of the second sound guide pipe 510 has a branch sound guide pipe 520 corresponding to the sound absorption support rod 530, the branch sound guide pipe 520 passes through the sound insulation shell 100 and the inner sound insulation layer 400 and extends to the inside of the inner sound insulation layer 400, the other end of the second sound guide pipe 510 extends into the inside of the sound absorption pool 700, one end of the sound absorption support rod 530 is connected with the corresponding branch sound guide pipe 520, and the other end extends to between the two transformer station bodies 200, a plurality of sound absorption balls 540 for absorbing sound waves between the two transformer station bodies 200 are arranged on the outer wall of each sound absorption support rod 530; in the embodiment of the application, the plurality of sound absorption balls 540 are divided into two groups and respectively opposite to the side walls of the two transformer station bodies 200, and the sound absorption balls 540 are deformed under stress; the surface of the sound absorption ball 540 abuts against the side wall of the transformer station body 200, so as to buffer the transverse vibration of the transformer station body 200 through deformation, when the vibration sound wave enters the porous structure of the sound absorption ball 540, the air vibrates in the pore and rubs against the pore wall to convert sound energy into heat energy (dissipated through viscous resistance); the branch sound guide pipe 520 and the second sound guide pipe 510 are arranged to guide the noise generated by the vibration of the sound insulation shell 100 and the noise inside the sound insulation shell 100 into the inside of the sound absorption pool 700, and the noise energy is consumed by the flow of the flowing medium.

[0036] The above embodiment provides a transformer station noise reduction device, and the working principle is as follows:

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

[0038] The sound insulation shell 100 and the inner sound insulation layer 400 cooperate: the sound insulation shell 100 is outside the transformer station body 200 and forms a double-layer sound insulation structure with the inner sound insulation layer 400. The sound insulation cavity 410 between the two can weaken the sound wave energy through air damping effect and block the noise propagation path.

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

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

[0041] The core function of the damping and sound absorption support part 320:

[0042] Vertical elastic damping buffering: the connecting frame 321 is elastically connected with the hollow support leg part 323 through the damping spring part 326, buffers the up-down vibration of the transformer station body 200, and avoids rigid transmission.

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

[0044] Downward vibration: the connecting frame presses the reaction tooth, the reaction gear 3244 rotates, the support arm 3242 pushes the reaction strip 3243 to push the deformation buffer plate 322, and the downward force of the transformer body 200 is offset.

[0045] Upward vibration: the reverse action rotating unit 324 rotates, the deformation buffer plate 322 pulls down the transformer body 200, and the upward amplitude is inhibited.

[0046] Symmetrical damping design: two reverse action rotating units are connected through damping springs 328 to provide continuous elastic damping and enhance vibration energy dissipation.

[0047] 3. Energy conversion of the deformation buffer plate 322 and the rubber convex layer 3221

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

[0049] 4. Noise directional processing of the side sound guide and sound absorption assembly

[0050] Side sound guide assembly 600: the noise reduction plate 610 absorbs medium and high frequency noise through a porous structure, and the remaining sound waves are guided into the sound absorption pool 700 through the first sound guide pipe 620 and are dissipated through fluid medium flow.

[0051] Sound absorption assembly 500: the sound absorption balls 540 on the sound absorption support rods 530 directly contact the side wall of the transformer body 200, buffer transverse vibration, and dissipate sound energy through a porous structure; the branched sound guide pipe 520 and the second sound guide pipe 510 guide noise into the sound absorption pool 700 for centralized processing.

[0052] 5. Final noise elimination of the sound absorption pool 700

[0053] All sound guide pipes (first sound guide pipe 620, second sound guide pipe 510) concentrate noise into the sound absorption pool 700, and through the friction and turbulent flow of the flow medium (such as water or sound absorption material), the sound energy is completely converted into heat energy.

[0054] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood 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 in the opposite direction, so that it rotates around its own axis.

2. The substation noise reduction device according to claim 1, characterized in that, 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.

3. The substation noise reduction device according to claim 2, characterized in that, 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 and rotatably connected to the two 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 insert. 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.

4. The substation noise reduction device according to claim 3, 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.

5. The substation noise reduction device according to claim 3, 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.

6. The substation noise reduction device according to any one of claims 1-5, 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.

7. The substation noise reduction device according to claim 6, 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.

8. The substation noise reduction device according to claim 6, 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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