Product Details

Product Description

Sound Reduction Hood contain One-piece Sound Reduction Hood and Fabricated Sound Reduction Hood.

Sound insulation hood is an advisable and effective noise reduction measure, which can enclose the device with higher noise to effectively impede the outward transmission and diffusion of noise, and reduce the effect of noise on environment. Sound level difference between internal and external sound insulation hood is 20-30dB(A).

Sound insulation hood shell is generally made from metal materials with a certain weight and rigidity, and usually adopts 1.5~3mm thick galvanized steel plate and stainless steel plate, etc. A layer of damping layer can be set on the plate to reduce the vibration of plate, and improve the sound insulation property of sound insulation hood. 

As for the equipment which needs heat dissipation, necessary ventilation duct should be reserved on the sound insulation hood. This duct must be provided with silencer. Equipment process and maintenance requirements must be met during the design of sound insulation hood. For example, chain hoist is set in the sound reduction hood for equipment overhaul use. 

Sound insulation hood is mainly applicable to the equipment which needs noise reduction, e.g. air compressor, natural gas compressor, diesel engine, gas turbine, steam turbine, motor, water pump, fan and other noisy equipment. 

One-piece sound reduction hood is a sound reduction hood that the whole hood or main structure is fabricated as a whole, in which steel structure skeleton, wall and roof are generally fabricated as a whole, and silencer, sound insulation door and sound insulation window can be fabricated with main body of sound reduction hood as a whole, but also can be separately fabricated and then assembled on the site. 

Fabricated sound reduction hood is a set of noise reduction equipment that all components of sound reduction hood are prefabricated in the factory and then assembled on the site. Sound reduction hood produced by our company now has achieved design standardization, batch fabrication, product seriation and installation modularization, which greatly improve the quality of sound reduction hood, and reduce the cost of sound reduction hood.





Property: the rigidity and sealing property of hood body are very good as one-piece sound reduction hood is fabricated as a whole. Hence, one-piece sound reduction hood has good noise reduction property, and noise reduction quantity can be up to 25—35dB(A).

Installation: one-piece sound reduction hood is fabricated as a whole, and the connection interface between sound reduction hood and noisy equipment is arranged on the mounting base. As there is less installation interface, the installation now is simple, and a set of one-piece sound reduction hood can generally be installed within 1~2h. 

Installation: fabricated sound reduction hood adopts standard connection mode, and all components adopt plug-in connection or bolted connection without flame operation on the site. The installation now is simple, and a set of fabricated sound reduction hood can generally be installed within 1~2 days.

Transport: one-piece sound reduction hood has higher transport requirements, and must be transported as a whole since it is fabricated as a whole. However, there is superwide and superhigh risk, and the space in the hood can't be reasonably utilized, so more space is wasted, and transport cost is higher. 

Universality: one-piece sound reduction hood has stronger targeted design, and can only be used for noisy equipment or those with very close overall dimension. 

fabricated sound reduction hood :

all components of sound reduction hood are designed and fabricated in a standard mode, and standardized sound insulation door, sound absorption/insulation wall, silencer and universal components can be applied on sound reduction hood of any hood.




Product Features: 

√	Acoustic: Noise reduction quantity 20~30dB(A)
√	Environmental protection: free of harmful substances
√	Burning grade: grade A non-flammable GB8624-2012
√	Easy to install
√	25-year service life




Packaging & Shipping






 

Company Information

Sichuan ZISEN Acoustics Technology Co., Ltd. sets up production base and R&D testing center at No.57, West Section of Haike Road, Cross-Strait Science & Technology Industry Development Park, Wenjiang, Chengdu, and production plant area houses office building, research institution, sound elimination equipment test center (professional acoustical laboratory covers 650 square meters), modern production workshop and staff dormitory. Production workshop in Wenjiang, Chengdu covers 8800 square meters, and has 4 professional production lines, respectively production lines of sound absorption module, compressor silencer, sound reduction hood and air duct silencer, in which the annual production of production line of sound absorption module is 100,000 square meters, compressor silencer is 100 sets, sound reduction hood is 120 sets, and air duct silencer is 20,000 linear meters. It also has several production bases in other provinces to meet the production needs for continuous expansion. The company has complete production and detection equipment to ensure the normal and efficient production. Up to 2015, the company has provided over 800 noise control engineering consultations and designs, 500 noise control engineering constructions and 2000 sets of noise reduction equipment for customers in such fields as industry, transportation and building.

 

Laboratory

As the key environmental protection laboratory in Sichuan Province, our acoustical laboratory covers 521 square meters, and is composed of reverberation chamber, sound insulation chamber, silencer dynamic evaluation laboratory and impedance tube laboratory. The laboratory now is the largest noise control technology and acoustic material research & test center in southwestern China, and leads domestic noise control field. Silencer dynamic evaluation laboratory now is the largest silencer test platform in China. 

Our laboratory is designed by architectural acoustics design team from Tsinghua University based on relevant national standards and by reference to well-known acoustical laboratories at home and abroad. Main measurement instruments are manufactured by B&K, Denmark (a measurement instrument manufacturer ranking No.1 in the world, and providing noise and vibration solutions). The laboratory conforms to the testing conditions of CMA (China Metrology Accreditation), and has issued the reports conforming to CMA requirements for customers, and especially plays an irreplaceable role in the development of new productions and the detection of product quality. 

Our laboratory has established a resource sharing and advantage complement relationship with several institutions, e.g. Architectural Physics Laboratory of Tsinghua University andAcoustics Institute of National Institute of Measurement and Testing Technology, etc., and does business with them in product R&D, performance detection and other fields.  

The objectives of our laboratory are to correctly evaluate the sound absorption, sound insulation or sound elimination property of each kind of noise reduction product or structure with various measurement methods, support the design and optimization of noise reduction scheme, and ensure the noise of noise reduction engineering really meets the standard!

 

FAQ

Payment :

30% prepayment plus 70% within 5 days of copy of BL, or at sight letter of credit. Other payment methods are available but under special consideration basis.

 

Production and shipping lead times:

Usually production will start within 15days of receiving prepayments or notification of LC. Client will be notified ahead of order if lead times are longer than usual.

 

Delivery terms:

FOB and CIF are the most popular forms.

 

How is the price?

Prices vary based on acoustic standard, spec, what project, volume, delivery terms, etc. We aim to provide a complete sourcing service from manufacturing to logistics to consulting, so please establish direct contact with us to find the best pricing options for your company.