Тендеры России
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Procurement of 0613-254024161579 Aeroacoustic wind tunnel channel silencing system silencing material(1) (Китайская Народная Республика - Тендер #62970937) | ||
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Страна: Китайская Народная Республика (другие тендеры и закупки Китайская Народная Республика) Номер конкурса: 62970937 Дата публикации: 10-04-2025 Источник тендера: www.chinabidding.com |
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Procurement of 0613-254024161579 Aeroacoustic wind tunnel channel silencing system silencing material(1)
| NO. | Product Name | Quantity | Main Technical Data | Remarks |
| 1 | Test section resident: observation window sill inside the window | 1 set | Customize according to the original design drawing dimensions | |
| 2 | Test section resident: collection port sound absorption structure | 1 set | The structure remains unchanged, and all sound-absorbing materials are replaced, in order from the outside to the inside: - carbon fiber felt cloth- 1.5mm thick, 45% perforation rate metal plate- 300mm thick rock wool | |
| 3 | The first diffusion section: wall soundproofing material | 1 set | The structure remains unchanged, and all sound-absorbing materials are replaced, in order from the outside to the inside: - carbon fiber felt cloth- 1.5mm thick, 45% perforation rate metal plate- 400mm thick rock wool- 1.5mm thick, 40% perforation rate metal plate- 600mm thick gap; | |
| 4 | Corner 1: Flow deflector muffler (using perforated metal plate structure) | 1 set | Change the structure entirely, and the sound-absorbing material should be arranged from the outside to the inside in the following order: - glass felt cloth- 1.5mm thick, 45% perforation rate metal plate- Rock wool filling layer; | |
| 5 | Corner 1: Corner 1 protective net | 1 set | e) Add a steel protective net to the entire windward side of the corner and reserve a personnel access door; | |
| 6 | Fan silencer: installation of keel on the fan silencer walkway | 1 set | A) ★ Install keel: Install keel in the pedestrian area of the fan muffler to ensure sufficient support for personnel when walking. During the installation process, the original fan transition section, diffusion section, and tailpipe muffler frame structure will not be changed. " | |
| 7 | Fan silencer: inspection of transition section silencer and replacement of sound-absorbing materials | 1 set | B)▲Simultaneously inspect the existing fan silencers (transition section silencers, fan diffusion section silencers, tail cone silencers), supplement the damaged areas of the sound-absorbing materials with sound-absorbing materials, without changing the original acoustic characteristics and not lower than the original design standards. Ensure that the sound absorption material of the tail vertebrae, the design of the transition section muffler, and the fan diffusion section muffler are not lower than the original parameter indicators. " | |
| 8 | Fan muffler: Inspection of fan diffuser muffler and replacement of sound-absorbing materials | 1 set | B)▲ Simultaneously inspect the existing fan silencers (transition section silencers, fan diffusion section silencers, tail cone silencers), supplement the damaged areas of the sound-absorbing materials with sound-absorbing materials, without changing the original acoustic characteristics and not lower than the original design standards. Ensure that the sound absorption material of the tail vertebrae, the design of the transition section muffler, and the fan diffusion section muffler are not lower than the original parameter indicators. " | |
| 9 | Fan silencer: tail cone silencer inspection and replacement of sound-absorbing materials | 1 set | B) ▲Simultaneously inspect the existing fan silencers (transition section silencers, fan diffusion section silencers, tail cone silencers), supplement the damaged areas of the sound-absorbing materials with sound-absorbing materials, without changing the original acoustic characteristics and not lower than the original design standards. Ensure that the sound absorption material of the tail vertebrae, the design of the transition section muffler, and the fan diffusion section muffler are not lower than the original parameter indicators. " | |
| 10 | Corner 4: Replace the steel structure of the bottom guide vane and the two-layer material of the muffler with the new material in the same form as before | 1 set | Replace the bottom two layers of material, from the outer layer to the inner layer:- Basotect, Integrated cutting sound absorbing foam |