Ventilation and sound insulation cover applied to a water turbine top cover

Abstract

The utility model relates to the technical field of water turbine sound insulation of hydropower station, aims at solving the problem of poor noise reduction effect, not meeting the ventilation, heat dissipation and noise reduction simultaneously, high noise in the environment and easy to harm the body of staff in the prior art, and provides a ventilation sound insulation cover applied to the top cover of water turbine, which comprises a cover shell for sound insulation, a top cover for sound insulation is arranged on the top of the cover shell, a horizontal partition plate for sound insulation is fixed in the cover shell, a plurality of vertical partition plates for sound insulation are arranged between the horizontal partition plate and the inner wall of the top cover, the two sides of the plurality of vertical partition plates are vertically fixedly connected on the horizontal partition plate and the inner wall of the top cover respectively, a ventilation and heat dissipation channel is arranged at the axis of the horizontal partition plate, a hollow window is arranged at the corresponding cover shell of adjacent vertical partition plates, and the hollow window and the ventilation and heat dissipation channel are mutually penetrated. The utility model has the beneficial effects of good noise reduction effect, meeting the ventilation, heat dissipation and noise reduction requirements simultaneously, low noise in the environment and being beneficial to protecting the health of staff.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation technology for hydropower turbines, and more specifically, to a ventilation and sound insulation cover applied to the top cover of a hydropower turbine. Background Technology

[0002] In the field of noise control, soundproof enclosures are widely used as important devices to reduce the operating noise of equipment. Existing soundproof enclosures generally adopt a closed or semi-closed structure. Their typical structure is a combination of metal back plate, sound-absorbing material and micro-perforated plate. Among them, the sound-absorbing material is often made of fiber materials such as glass wool and rock wool. These materials can effectively reduce noise in the initial stage of use due to their good sound absorption performance.

[0003] However, as the usage time increases, fiber-based sound-absorbing materials have obvious defects. Due to factors such as long-term vibration and airflow impact, the sound-absorbing materials will gradually age and eventually pulverize and crumble. Once these pulverized fiber particles spread into the working environment, employees may inhale them during their daily work, which will seriously affect their health. At the same time, the pulverization of the sound-absorbing materials will also lead to a decrease in their sound absorption performance, which will greatly reduce the noise reduction effect of the soundproof enclosure.

[0004] Regarding equipment operation, existing technologies typically employ two approaches to address ventilation and heat dissipation requirements during operation. One approach involves directly creating ventilation holes in the soundproof enclosure of equipment such as generators. While this method satisfies ventilation and heat dissipation requirements, the presence of these holes compromises the airtightness of the enclosure, allowing internal noise to escape directly through the openings and severely impacting the sound insulation performance. The other approach is to install a separate silencer. Although silencers can balance ventilation and noise reduction to some extent, their large size not only occupies significant installation space but also makes it difficult to coordinate and unify with the soundproof enclosure in terms of appearance, affecting the overall aesthetics. Utility Model Content

[0005] The present invention aims to provide a ventilation and sound insulation cover for use on the top cover of a water turbine, in order to solve the problems of poor noise reduction effect, inability to simultaneously meet the needs of ventilation, heat dissipation and noise reduction, high noise in the environment and easy harm to the health of workers in the prior art.

[0006] The embodiments of this utility model are implemented as follows:

[0007] This utility model embodiment provides a ventilation and sound insulation cover for use on the top cover of a water turbine, which includes a cover shell for sound insulation;

[0008] The top of the aforementioned housing is provided with a top cover for sound insulation, the top cover is detachably connected to the top of the aforementioned housing, the interior of the aforementioned housing is provided with a transverse partition for sound insulation, the outer edge of the transverse partition is fixedly connected to the inner wall of the aforementioned housing, and the transverse partition is arranged in the top section of the aforementioned housing.

[0009] Several vertical partitions for sound insulation are provided between the aforementioned horizontal partition and the inner wall of the aforementioned top cover. The two sides of the aforementioned vertical partitions are respectively vertically fixed to the aforementioned horizontal partition and the inner wall of the aforementioned top cover.

[0010] A ventilation and heat dissipation channel is provided at the axis of the aforementioned horizontal partition, and a perforated window is provided at the cover corresponding to the aforementioned vertical partition, and the perforated window and the aforementioned ventilation and heat dissipation channel are interconnected.

[0011] When in use, the water turbine will generate a lot of heat and noise after running for a period of time. The above-mentioned ventilation and heat dissipation channels and the above-mentioned perforated windows can dissipate a lot of heat to achieve the purpose of ventilation and heat dissipation for the water turbine. At the same time, the above-mentioned cover, the above-mentioned top cover, the above-mentioned horizontal partition and the above-mentioned vertical partition, which have sound insulation effect, can absorb the noise emitted by the water turbine, reduce the noise decibel outside the ventilation and sound insulation cover, and avoid affecting the surrounding environment.

[0012] The ventilation and soundproof cover for a turbine top cover disclosed in this embodiment adopts the aforementioned cover shell, top cover, horizontal partition and vertical partition with sound insulation effect, and sets the aforementioned ventilation and heat dissipation channels and the aforementioned hollow windows, so as to meet the requirements of sound insulation and noise reduction while facilitating ventilation and heat dissipation. As a result, the ventilation and soundproof cover for a turbine top cover has the beneficial effects of good noise reduction effect, simultaneous meeting the requirements of ventilation, heat dissipation and noise reduction, low noise in the environment and protection of the health of workers.

[0013] Optionally: the above-mentioned cover is a barrel-shaped structure, the above-mentioned cover has several interconnected arc-shaped support skeletons, the outer walls of the several arc-shaped support skeletons are provided with annular side steel plates, the outer walls of the several arc-shaped support skeletons are all welded to the inner walls of the annular side steel plates, and the above-mentioned hollowed-out windows are opened on the top section side wall of the annular side steel plates.

[0014] This design allows the enclosure to initially form a sealed cylindrical structure, facilitating assembly and disassembly. The arrangement of the perforated windows at the top facilitates ventilation and heat dissipation without compromising sound insulation. Furthermore, the arrangement of several arc-shaped support frames enhances the structural strength of the ventilation and sound insulation enclosure, and facilitates the fixing of the arc-shaped particle panels to the arc-shaped support frames using self-tapping screws.

[0015] Optionally, each of the aforementioned arc-shaped support frames is provided with an arc-shaped particle plate on the side away from the aforementioned annular side steel plate, and the aforementioned arc-shaped particle plates are fixedly connected to the inner wall of the aforementioned arc-shaped support frames.

[0016] With this configuration, the aforementioned arc-shaped particle plates enable the inner wall of the enclosure to have a noise reduction function, ensuring the noise reduction effect of the ventilation and soundproof enclosure, meeting the requirements for sound insulation and noise reduction, increasing the contribution to environmental noise and reducing the harm to the health of workers.

[0017] Optionally, sealant is provided at the gap between adjacent arc-shaped microparticle plates.

[0018] This configuration allows for a tighter connection between adjacent curved particle plates, ensuring a secure seal between them.

[0019] Optionally: Several of the above-mentioned arc-shaped support frames have several vertical rectangular tubes, and several horizontal rectangular tubes are welded between adjacent vertical rectangular tubes, and several horizontal rectangular tubes are evenly distributed between adjacent vertical rectangular tubes.

[0020] Several vertical rectangular tubes are welded between adjacent horizontal rectangular tubes, and the several vertical rectangular tubes are evenly distributed between adjacent horizontal rectangular tubes. The top cover is detachably connected to the top of the several vertical rectangular tubes.

[0021] Several of the aforementioned arc-shaped microparticle plates are embedded between several of the aforementioned transverse rectangular tubes and several of the aforementioned vertical rectangular tubes on the side of the aforementioned annular side steel plate.

[0022] This configuration improves the stability and strength of the arc-shaped support frame by using a number of vertical rectangular tubes, horizontal rectangular tubes, and vertical rectangular tubes, and facilitates the fixing of the arc-shaped particle plates to the vertical rectangular tubes, horizontal rectangular tubes, and vertical rectangular tubes using self-tapping screws.

[0023] Optionally, the top cover has several sector-shaped partitions, and adjacent sector-shaped partitions are fixedly connected to each other.

[0024] This design facilitates the disassembly and installation of the top cover, and makes it easier to transport and store it.

[0025] Optionally: Each of the aforementioned fan-shaped partitions has a top module back plate, the outer extension of the top module back plate has an inwardly folded first folded edge, and the inner side of the top module back plate is welded with a plurality of evenly distributed top channel steel frames. A top microparticle plate is fixedly connected to the side of the top channel steel frame away from the top module back plate, and the side of the top microparticle plate close to the top module back plate is embedded between adjacent top channel steel frames.

[0026] With this configuration, the top module back panel acts as a sealed outer wall, sealing the top of the ventilation and sound insulation enclosure. This allows sound waves to propagate within the fan-shaped partitions and undergo multiple reflections between the top module back panels. Each reflection absorbs or scatters some of the sound energy, causing the sound waves to attenuate continuously during propagation, thus achieving noise reduction. The aforementioned top channel steel frame enhances the strength and stability of the fan-shaped partitions, preventing deformation. The top particle plate has numerous pores and microchannels. When sound waves enter the top particle plate, air molecules rub and adhere within the pores, converting sound energy into heat energy and consuming it, thus achieving sound absorption.

[0027] Optionally: the above-mentioned transverse partition has a plurality of annularly distributed arc-shaped partitions, adjacent arc-shaped partitions are fixedly connected to each other, and the outer edges of the plurality of arc-shaped partitions are fixedly connected to the corresponding arc-shaped support frame.

[0028] This design facilitates the storage and transportation of the horizontal partitions, makes on-site installation and disassembly of the horizontal partitions convenient, and allows the outer edge of the arc-shaped partitions to be fixedly connected to the corresponding arc-shaped support frame, so that the horizontal partitions can be firmly fixed inside the ventilation and sound insulation cover, which facilitates sound absorption.

[0029] Optionally: Each of the aforementioned arc-shaped partitions has a transverse module back plate, the outer extension of the transverse module back plate has an inwardly folded second edge, the inner side of the transverse module back plate is welded with a plurality of evenly distributed transverse channel steel skeletons, the side of the transverse channel steel skeleton away from the transverse module back plate is fixedly connected to a first transverse particle plate, the side of the first transverse particle plate close to the transverse module back plate is embedded between adjacent transverse channel steel skeletons, and the side of the transverse module back plate away from the first transverse particle plate is fixedly connected to a second transverse particle plate.

[0030] With this configuration, the aforementioned transverse module backplates facilitate multiple reflections between the transverse module backplates as sound waves propagate within the aforementioned arc-shaped partition. Each reflection results in the absorption or scattering of some sound energy, causing the sound waves to attenuate continuously during propagation, thus achieving noise reduction. The aforementioned second folded edge supports the aforementioned first transverse particle plate, protecting its outer edge. Several transverse channel steel frames enhance the strength and stability of the aforementioned arc-shaped partition, preventing deformation. The aforementioned first and second transverse particle plates have numerous pores and microchannels. When sound waves enter the aforementioned first and second transverse particle plates, air molecules rub and adhere within the pores, converting sound energy into heat energy and consuming it, thus achieving sound absorption. Therefore, the aforementioned first and second transverse particle plates provide sound insulation on both sides of the aforementioned arc-shaped partition.

[0031] Optionally: a plurality of the above-mentioned vertical partitions are evenly distributed between the above-mentioned horizontal partitions and the inner wall of the above-mentioned top cover;

[0032] Each of the aforementioned vertical partitions has a vertical module back plate. The outer extension of the vertical module back plate has an inwardly folded third edge. A plurality of evenly distributed vertical channel steel frames are welded to the inner side of the vertical module back plate. A first vertical particle plate is fixedly connected to the side of the vertical channel steel frame away from the vertical module back plate. The side of the first vertical particle plate close to the vertical module back plate is embedded between adjacent vertical channel steel frames. A second vertical particle plate is fixedly connected to the side of the vertical module back plate away from the first vertical particle plate.

[0033] This configuration allows the vertical module backplates to reflect sound waves multiple times between them as the sound waves propagate within the vertical partitions. Each reflection absorbs or scatters some of the sound energy, causing the sound waves to attenuate during propagation and thus reducing noise. The third folded edge supports the first vertical particle plate and protects its outer edge. The vertical channel steel frame enhances the strength and stability of the vertical partitions, preventing deformation. The first and second vertical particle plates have numerous pores and microchannels. When sound waves enter the first and second vertical particle plates, air molecules rub and adhere within the pores, converting sound energy into heat energy and consuming it, thus achieving sound absorption. Therefore, the first and second vertical particle plates provide sound insulation on both sides of the vertical partitions. Furthermore, the gaps between adjacent vertical partitions facilitate ventilation and heat dissipation without compromising noise reduction.

[0034] Optionally, the above-mentioned housing is provided with an inspection door.

[0035] This arrangement makes it convenient for staff to inspect and maintain the various components inside the aforementioned enclosure.

[0036] In summary, the ventilation and sound insulation cover for the top cover of a water turbine disclosed in this utility model has the beneficial effects of good noise reduction, simultaneous meeting the needs of ventilation, heat dissipation and noise reduction, low noise in the environment, and protection of the health of the staff. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a cross-sectional view of a ventilation and sound insulation cover applied to the top cover of a water turbine in an embodiment of this utility model;

[0039] Figure 2 This is a top view of the horizontal partition and the vertical partition in an embodiment of this utility model;

[0040] Figure 3 This is a schematic diagram of a partial structure of the cover in an embodiment of this utility model;

[0041] Figure 4 This is a schematic diagram of the arc-shaped support frame in an embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram of the arc-shaped microparticle plate in an embodiment of the present invention;

[0043] Figure 6 This is a front view of the sector-shaped partition in an embodiment of this utility model;

[0044] Figure 7 This is a side view of the sector-shaped partition in an embodiment of the present invention;

[0045] Figure 8 This is a schematic diagram of the top channel steel frame in an embodiment of this utility model;

[0046] Figure 9 This is an embodiment of the present utility model. Figure 7 Enlarged view of point A in the middle;

[0047] Figure 10 This is a front view of the arc-shaped partition in an embodiment of this utility model;

[0048] Figure 11 This is a side view of the arc-shaped partition in an embodiment of the present invention;

[0049] Figure 12 This is a schematic diagram of the transverse channel steel frame in an embodiment of the present invention;

[0050] Figure 13 This is an embodiment of the present utility model. Figure 11 Enlarged view of point B in the middle;

[0051] Figure 14 This is a side view of the vertical partition in an embodiment of the present invention;

[0052] Figure 15 This is an embodiment of the present utility model. Figure 14 Enlarged diagram of point C in the middle.

[0053] Icons: 1-Shell, 2-Top cover, 3-Horizontal partition, 4-Vertical partition, 5-Ventilation and heat dissipation channel, 6-Hollowed-out window, 7-Arc-shaped support frame, 8-Annular side steel plate, 9-Arc-shaped particle plate, 10-Sealant, 11-Vertical rectangular tube, 12-Horizontal rectangular tube, 13-Vertical rectangular tube, 14-Fan-shaped partition, 15-Top module back plate, 16-First fold, 17-Top channel steel frame, 18-Top particle plate, 19-Arc-shaped partition, 20-Horizontal module back plate, 21-Second fold, 22-Horizontal channel steel frame, 23-First horizontal particle plate, 24-Second horizontal particle plate, 25-Vertical module back plate, 26-Third fold, 27-Vertical channel steel frame, 28-First vertical particle plate, 29-Second vertical particle plate. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0056] Example

[0057] See Figures 1-15 This embodiment proposes a ventilation and sound insulation cover for use on the top cover of a water turbine, including a cover 1 for sound insulation;

[0058] The top of the housing 1 is provided with a top cover 2 for sound insulation. The top cover 2 is detachably connected to the top of the housing 1. The interior of the housing 1 is provided with a transverse partition 3 for sound insulation. The outer edge of the transverse partition 3 is fixedly connected to the inner wall of the housing 1. The transverse partition 3 is arranged in the top section of the housing 1.

[0059] Several vertical partitions 4 for sound insulation are provided between the horizontal partition 3 and the inner wall of the top cover 2. The two sides of the several vertical partitions 4 are respectively vertically fixed to the inner wall of the horizontal partition 3 and the top cover 2.

[0060] A ventilation and heat dissipation channel 5 is provided at the axis of the horizontal partition 3, and a hollow window 6 is provided at the cover 1 corresponding to the adjacent vertical partition 4. The hollow window 6 and the ventilation and heat dissipation channel 5 are interconnected.

[0061] When in use, the water turbine will generate a lot of heat and noise after running for a period of time. The ventilation and heat dissipation channel 5 and the hollow window 6 can dissipate a lot of heat to achieve the purpose of ventilation and heat dissipation for the water turbine. At the same time, the soundproof cover 1, top cover 2, horizontal partition 3 and vertical partition 4 can absorb the noise emitted by the water turbine, reduce the noise decibel outside the ventilation and soundproof cover, and avoid affecting the surrounding environment.

[0062] The ventilation and soundproof cover disclosed in this embodiment, applied to the top cover of a water turbine, adopts a cover shell 1, a top cover 2, a horizontal partition 3, and a vertical partition 4 with sound insulation effect. It is provided with ventilation and heat dissipation channels 5 and perforated windows 6, which facilitates meeting the requirements of sound insulation and noise reduction while facilitating ventilation and heat dissipation. As a result, the ventilation and soundproof cover applied to the top cover of a water turbine has the beneficial effects of good noise reduction effect, simultaneous meeting the requirements of ventilation, heat dissipation and noise reduction, low noise in the environment, and protection of the health of the staff.

[0063] See Figures 1-15 The casing 1 has a barrel-shaped structure and several interconnected arc-shaped support frames 7. The outer walls of the arc-shaped support frames 7 are provided with annular side steel plates 8. The outer walls of the arc-shaped support frames 7 are all welded to the inner walls of the annular side steel plates 8. The perforated windows 6 are opened on the top side wall of the annular side steel plates 8. This makes the casing 1 initially form a sealed cylindrical structure, which is easy to disassemble and assemble. The perforated windows 6 at the top facilitate ventilation and heat dissipation of the ventilation and sound insulation cover without affecting sound insulation. At the same time, the setting of several arc-shaped support frames 7 improves the structural strength of the ventilation and sound insulation cover and makes it easy to fix the arc-shaped particle plates 9 to the arc-shaped support frames 7 with self-tapping screws.

[0064] Several arc-shaped support frames 7 are provided with arc-shaped particle plates 9 on the side away from the annular side steel plate 8. Several arc-shaped particle plates 9 are fixedly connected to the inner wall of several arc-shaped support frames 7. The arc-shaped particle plates 9 enable the inner wall of the cover 1 to have a noise reduction function, ensuring the noise reduction effect of the ventilation soundproof cover, meeting the sound insulation and noise reduction requirements, increasing the contribution to environmental noise and reducing the harm to the health of workers.

[0065] A sealant 10 is provided in the gap between adjacent arc-shaped microparticle plates 9. The sealant 10 makes the adjacent arc-shaped microparticle plates 9 more tightly connected, ensuring a firm seal between adjacent arc-shaped microparticle plates 9.

[0066] A plurality of arc-shaped support frames 7 have a plurality of vertical rectangular tubes 11, and a plurality of horizontal rectangular tubes 12 are welded between adjacent vertical rectangular tubes 11. The plurality of horizontal rectangular tubes 12 are evenly distributed between adjacent vertical rectangular tubes 11. A plurality of vertical rectangular tubes 13 are welded between adjacent horizontal rectangular tubes 12. The plurality of vertical rectangular tubes 13 are evenly distributed between adjacent horizontal rectangular tubes 12. The top cover 2 is detachably connected to the top of the plurality of vertical rectangular tubes 11. A plurality of arc-shaped particle plates 9 are embedded between the plurality of horizontal rectangular tubes 12 and the plurality of vertical rectangular tubes 13 on the side near the annular side steel plate 8. The plurality of vertical rectangular tubes 11, the plurality of horizontal rectangular tubes 12 and the plurality of vertical rectangular tubes 13 are used to improve the stability and strength of the arc-shaped support frames 7, and facilitate the plurality of arc-shaped particle plates 9 to be fixed to the plurality of vertical rectangular tubes 11, the plurality of horizontal rectangular tubes 12 and the plurality of vertical rectangular tubes 13 by means of the plurality of vertical rectangular tubes 11, the plurality of horizontal rectangular tubes 12 and the plurality of vertical rectangular tubes 13.

[0067] See Figures 1-15 The top cover 2 has several sector-shaped partitions 14, and adjacent sector-shaped partitions 14 are fixedly connected to each other, which facilitates the disassembly and installation of the top cover 2 and makes it convenient for the top cover 2 to be transported and stored.

[0068] Several fan-shaped partitions 14 each have a top module back plate 15. The outer extension of the top module back plate 15 has an inwardly folded first folded edge 16. Several evenly distributed top channel steel frames 17 are welded to the inner side of the top module back plate 15. A top particle plate 18 is fixedly connected to the side of the top channel steel frame 17 away from the top module back plate 15. The side of the top particle plate 18 close to the top module back plate 15 is embedded between adjacent top channel steel frames 17. The top module back plate 15 serves as a sealed outer wall, capable of sealing the top of the ventilation and sound insulation enclosure. To facilitate the propagation of sound waves within the fan-shaped partition 14, multiple reflections occur between the top module backplates 15. Each reflection results in the absorption or scattering of some sound energy, causing the sound waves to attenuate continuously during propagation, thus achieving noise reduction. Meanwhile, several top channel steel frames 17 enhance the strength and stability of the fan-shaped partition 14, preventing deformation. The top particle plate 18 has numerous pores and microchannels. After sound waves enter the top particle plate 18, air molecules rub and adhere within the pores, converting sound energy into heat energy and consuming it, thereby achieving sound absorption.

[0069] See Figures 1-15 The transverse partition 3 has several annularly distributed arc-shaped partitions 19, with adjacent arc-shaped partitions 19 fixedly connected to each other. The outer edges of several arc-shaped partitions 19 are fixedly connected to the corresponding arc-shaped support frame 7. This facilitates the storage and transportation of the transverse partition 3, and makes it convenient for the transverse partition 3 to be installed and disassembled on site. Fixing the outer edges of the arc-shaped partitions 19 to the corresponding arc-shaped support frame 7 enables the transverse partition 3 to be firmly fixed inside the ventilation and sound insulation cover, which facilitates sound absorption.

[0070] Several arc-shaped partitions 19 each have a transverse module backplate 20. The outer extension of the transverse module backplate 20 has an inwardly folded second edge 21. Several evenly distributed transverse channel steel skeletons 22 are welded to the inner side of the transverse module backplate 20. A first transverse particle plate 23 is fixedly connected to the side of the transverse channel steel skeleton 22 away from the transverse module backplate 20. The side of the first transverse particle plate 23 near the transverse module backplate 20 is embedded between adjacent transverse channel steel skeletons 22. A second transverse particle plate 24 is fixedly connected to the side of the transverse module backplate 20 away from the first transverse particle plate 23. The arrangement of the transverse module backplate 20 facilitates that when sound waves propagate within the arc-shaped partitions 19, they will be reflected multiple times between the transverse module backplates 20. Each reflection will result in a portion of the sound waves being reflected back. The sound energy is absorbed or scattered, causing the sound waves to attenuate continuously during propagation, thereby achieving noise reduction. The second folded edge 21 can support the first transverse particle plate 23 and wrap and protect the outer edge of the first transverse particle plate 23. Several transverse channel steel frames 22 can improve the strength and stability of the arc-shaped partition 19 and prevent deformation. The first transverse particle plate 23 and the second transverse particle plate 24 have a large number of pores and micro-channels. After the sound waves enter the first transverse particle plate 23 and the second transverse particle plate 24, the air molecules rub and stick in the pores, and the sound energy is converted into heat energy and consumed, thus achieving sound absorption. Therefore, the arrangement of the first transverse particle plate 23 and the second transverse particle plate 24 enables both sides of the arc-shaped partition 19 to have sound insulation effect.

[0071] See Figures 1-15Several vertical partitions 4 are evenly distributed between the inner walls of the horizontal partitions 3 and the top cover 2. Each vertical partition 4 has a vertical module back plate 25. The outer extension of the vertical module back plate 25 has an inwardly folded third edge 26. Several evenly distributed vertical channel steel frames 27 are welded to the inner side of the vertical module back plate 25. A first vertical particle plate 28 is fixedly connected to the side of the vertical channel steel frame 27 away from the vertical module back plate 25. The side of the first vertical particle plate 28 close to the vertical module back plate 25 is embedded between adjacent vertical channel steel frames 27. A second vertical particle plate 29 is fixedly connected to the side of the vertical module back plate 25 away from the first vertical particle plate 28. The arrangement of the vertical module back plate 25 facilitates that when sound waves propagate within the vertical partitions 4, they will be reflected multiple times between the vertical module back plates 25. Each reflection will result in a portion of the sound waves being reflected back. The sound waves can be absorbed or scattered, causing them to attenuate continuously during propagation, thus achieving noise reduction. The third fold 26 can support the first vertical particle plate 28 and wrap and protect its outer edge. Several vertical channel steel frames 27 can improve the strength and stability of the vertical partition 4 and prevent deformation. The first vertical particle plate 28 and the second vertical particle plate 29 have a large number of pores and micro-channels. After the sound waves enter the first vertical particle plate 28 and the second vertical particle plate 29, the air molecules rub and stick in the pores, and the sound energy is converted into heat energy and consumed, thus achieving sound absorption. Therefore, the arrangement of the first vertical particle plate 28 and the second vertical particle plate 29 makes both sides of the vertical partition 4 have sound insulation effect. At the same time, the gap between adjacent vertical partitions 4 facilitates ventilation and heat dissipation without affecting noise reduction.

[0072] The casing 1 is equipped with an inspection door (not shown in the figure), and the arrangement of the inspection door facilitates the maintenance of various components inside the casing 1 by the staff.

[0073] See Figures 1-15 In this embodiment, several symmetrically arranged connecting flanges are provided on the connecting side of adjacent arc-shaped support frames 7. By splicing adjacent arc-shaped support frames 7 and connecting the corresponding connecting flanges with bolts, the cover 1 can be quickly installed. At the same time, it is convenient to disassemble, transport and store.

[0074] In this embodiment, sealant is applied between adjacent top microparticle plates 18 of several fan-shaped partitions 14 to ensure a firm seal between adjacent top microparticle plates 18. Self-tapping screws are first used to fix adjacent top microparticle plates 18, and then sealant is applied.

[0075] In this embodiment, sealant is applied to the gaps between adjacent first transverse particle plates 23 and adjacent second transverse particle plates 24 to ensure a firm seal between them. The adjacent first transverse particle plates 23 and adjacent second transverse particle plates 24 are first fixed with self-tapping screws and then sealed with sealant.

[0076] See Figures 1-15 In this embodiment, the ventilation and soundproof cover is a cylindrical shell. It can also be designed as a polygonal shell, circular shell, elliptical shell, etc., depending on other equipment that needs noise reduction. The feature of this ventilation and soundproof cover is that the middle of the cover 1 and the top cover 2 are connected by an arc-shaped support frame 7 and a top channel steel frame 17, respectively. The upper part of the soundproof cover has a ventilation and heat dissipation channel 5. There is a horizontal partition 3 in the middle of the soundproof cover. There is a vertical partition 4 between the horizontal partition 3 and the top cover 2. The hot air generated by the generator rises and is fanned through the ventilation and heat dissipation channel 5 between the vertical partitions 4. It is discharged from the hollow window 6 corresponding to the adjacent vertical partitions 4. The cover 1, the top cover 2, the horizontal partition 3 and the vertical partition 4 all have sound absorption and insulation functions, which ensures the noise reduction effect of the soundproof cover.

[0077] See Figures 1-15 In this embodiment, the arc-shaped microparticle plate 9, the top microparticle plate 18, the first horizontal microparticle plate 23, the second horizontal microparticle plate 24, the first vertical microparticle plate 28, and the second vertical microparticle plate 29 can be microparticle plates with different or the same formula and thickness, and the thickness of their internal cavities can be adjusted.

[0078] In this embodiment, the arc-shaped support frame 7, the top module back plate 15, the horizontal module back plate 20, and the vertical module back plate 25 can be selected from metal materials of different materials and thicknesses according to the actual situation.

[0079] In this embodiment, the number of vertical partitions 4 can be adjusted according to the actual situation. If the noise reduction requirement is small, vertical partitions 4 can be omitted, or other shapes such as wavy or U-shaped can be used.

[0080] See Figures 1-15In this embodiment, the arc-shaped particle plate 9, the top particle plate 18, the first horizontal particle plate 23, the second horizontal particle plate 24, the first vertical particle plate 28, and the second vertical particle plate 29 have numerous pores, microchannels, and cavities. Ordinary aeolian sand particle plates are used. After sound waves enter, air molecules rub and adhere within the pores, converting sound energy into heat energy, thus achieving sound absorption. When the frequency of the external sound wave matches the inherent frequency of the cavity, the air column within the cavity will resonate strongly. During the resonance process, air molecules rub against the cavity wall, converting sound energy into heat energy, thereby achieving absorption of sound waves of a specific frequency. When the sound wave propagates within the cavity, it will reflect multiple times between the particle plate and the metal backing plate. Each reflection will result in the absorption or scattering of some sound energy, allowing the sound wave to... The sound waves continuously attenuate during propagation. Simultaneously, due to the presence of air within the cavity, the sound waves lose energy as they propagate through the air due to factors such as air viscosity and thermal conduction, further reducing the intensity of the sound waves. This repeated reflection and attenuation within the cavity also has a certain suppressive effect on mid-to-high frequency sound waves, helping to improve the overall sound insulation performance of the structure. The top module backplate 15, the horizontal module backplate 20, and the vertical module backplate 25 all have high surface density and hardness, exhibiting strong reflection capabilities for sound waves incident on their surfaces. When sound waves propagate from the particle plate side to the metal backplate, most of the sound waves are reflected back, reducing the possibility of sound waves propagating outwards through the top module backplate 15, the horizontal module backplate 20, and the vertical module backplate 25.

[0081] In this embodiment, the annular side steel plate 8 on the cover 1 is welded together with the arc-shaped support frame 7. The thickness of the annular side steel plate 8 is greater than or equal to 8mm, and the thickness of the arc-shaped support frame 7 is greater than or equal to 3mm. One side of the arc-shaped support frame 7 is welded to the annular side steel plate 8, and the other side of the arc-shaped support frame 7 is fixed to the arc-shaped particle plate 9. The arc-shaped particle plate 9 is fixed to the arc-shaped support frame 7 with self-tapping screws, and sealant is applied to the gaps to ensure a firm seal.

[0082] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ventilation and soundproof cover for use on the top cover of a water turbine, characterized in that: Includes a housing (1) for sound insulation; The top of the housing (1) is provided with a top cover (2) for sound insulation. The top cover (2) is detachably connected to the top of the housing (1). The inside of the housing (1) is provided with a transverse partition (3) for sound insulation. The outer edge of the transverse partition (3) is fixedly connected to the inner wall of the housing (1). The transverse partition (3) is arranged in the top section of the housing (1). A plurality of vertical partitions (4) for sound insulation are provided between the transverse partition (3) and the inner wall of the top cover (2). The two sides of the plurality of vertical partitions (4) are respectively vertically fixed to the inner wall of the transverse partition (3) and the top cover (2). A ventilation and heat dissipation channel (5) is provided at the center of the horizontal partition (3), and a hollow window (6) is provided at the cover (1) corresponding to the adjacent vertical partition (4), and the hollow window (6) is connected to the ventilation and heat dissipation channel (5).

2. The ventilation and sound insulation cover for a turbine top cover according to claim 1, characterized in that: The cover (1) is a barrel-shaped structure. The cover (1) has several interconnected arc-shaped support frames (7). The outer walls of the arc-shaped support frames (7) are provided with annular side steel plates (8). The outer walls of the arc-shaped support frames (7) are all welded to the inner walls of the annular side steel plates (8). The hollow window (6) is opened on the top section side wall of the annular side steel plate (8).

3. A ventilation and soundproof cover for a turbine top cover according to claim 2, characterized in that: Each of the arc-shaped support frames (7) is provided with an arc-shaped microparticle plate (9) on the side away from the annular side steel plate (8), and the arc-shaped microparticle plates (9) are fixedly connected to the inner wall of the arc-shaped support frames (7).

4. A ventilation and soundproof cover for a turbine top cover according to claim 3, characterized in that: A sealant (10) is provided in the gap between adjacent arc-shaped microparticle plates (9).

5. A ventilation and soundproof cover for a turbine top cover according to claim 3, characterized in that: The arc-shaped support frame (7) has a number of vertical rectangular tubes (11), and a number of horizontal rectangular tubes (12) are welded between adjacent vertical rectangular tubes (11). The number of horizontal rectangular tubes (12) are evenly distributed between adjacent vertical rectangular tubes (11). A plurality of vertical rectangular tubes (13) are welded between adjacent horizontal rectangular tubes (12), and the plurality of vertical rectangular tubes (13) are evenly distributed between adjacent horizontal rectangular tubes (12). The top cover (2) is detachably connected to the top of the plurality of vertical rectangular tubes (11). Several of the arc-shaped microparticle plates (9) are embedded between several of the horizontal rectangular tubes (12) and several of the vertical rectangular tubes (13) on the side near the annular side steel plate (8).

6. A ventilation and soundproof cover for a turbine top cover according to claim 1, characterized in that: The top cover (2) has a plurality of sector-shaped partitions (14), and adjacent sector-shaped partitions (14) are fixedly connected to each other.

7. A ventilation and soundproof cover for a turbine top cover according to claim 6, characterized in that: Each of the aforementioned fan-shaped partitions (14) has a top module back plate (15). The outer extension of the top module back plate (15) has an inwardly folded first folded edge (16). The inner side of the top module back plate (15) is welded with a plurality of evenly distributed top channel steel frames (17). A top microparticle plate (18) is fixedly connected to the side of the top channel steel frame (17) away from the top module back plate (15). The side of the top microparticle plate (18) close to the top module back plate (15) is embedded between adjacent top channel steel frames (17).

8. A ventilation and soundproof cover for a turbine top cover according to claim 2, characterized in that: The transverse partition (3) has several annularly distributed arc-shaped partitions (19), adjacent arc-shaped partitions (19) are fixedly connected to each other, and the outer edges of several arc-shaped partitions (19) are fixedly connected to the corresponding arc-shaped support frame (7).

9. A ventilation and soundproof cover for a turbine top cover according to claim 8, characterized in that: Each of the arc-shaped partitions (19) has a transverse module back plate (20). The outer extension of the transverse module back plate (20) has an inwardly folded second fold (21). The inner side of the transverse module back plate (20) is welded with a plurality of evenly distributed transverse channel steel skeletons (22). A first transverse particle plate (23) is fixedly connected to the side of the transverse channel steel skeleton (22) away from the transverse module back plate (20). The side of the first transverse particle plate (23) close to the transverse module back plate (20) is embedded between adjacent transverse channel steel skeletons (22). A second transverse particle plate (24) is fixedly connected to the side of the transverse module back plate (20) away from the first transverse particle plate (23).

10. A ventilation and soundproof cover for a turbine top cover according to claim 1, characterized in that: Several vertical partitions (4) are evenly distributed between the transverse partition (3) and the inner wall of the top cover (2); Each of the vertical partitions (4) has a vertical module back plate (25). The outer extension of the vertical module back plate (25) has an inwardly folded third fold edge (26). The inner side of the vertical module back plate (25) is welded with a plurality of evenly distributed vertical channel steel frames (27). A first vertical particle plate (28) is fixedly connected to the side of the vertical channel steel frame (27) away from the vertical module back plate (25). The side of the first vertical particle plate (28) close to the vertical module back plate (25) is embedded between adjacent vertical channel steel frames (27). A second vertical particle plate (29) is fixedly connected to the side of the vertical module back plate (25) away from the first vertical particle plate (28).

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