Honeycomb fan muffler
1、 Usage and characteristics of fan muffler products:
The GF type fan muffler series products produced by our company are noise reduction devices used to control the aerodynamic noise caused by fans on the environment. Used for noise reduction in the inlet and outlet ducts of various centrifugal and ventilation fans.
The International Organization for Standardization (ISO) sets a noise standard of ≤ 90 decibels for such equipment, and China's new standard is the same. This is also the basis for industrial enterprises to achieve continuous noise standards. However, without using noise reduction measures, the noise emitted by the fan inlet and outlet to the environment can reach 110-120 decibels, greatly exceeding the standard requirements.
The muffler series products are impedance acoustic flow type. Our factory determines the required amount of noise reduction in the frequency spectrum range based on the frequency characteristic data obtained from actual testing of various wind turbine operation sites in power plants. This is the main basis for designing sound-absorbing sheet structures and fluid channels. At the same time, narrow rectangular channels with large sound-absorbing material finishes are used to enhance the absorption effect.
This product adopts a resistive structure for noise reduction at high and medium frequencies, as well as an anti structure for noise reduction at medium and low frequencies. At the same time, two types of noise reduction zones, high frequency and low frequency, are used in the resistive channel to maximize the width of the noise reduction frequency band and achieve good noise reduction effect.
At the same time, our company also produces honeycomb silencers and labyrinth silencers.
Honeycomb muffler is a type of resistive muffler that divides ventilation ducts into multiple small sound-absorbing channels, effectively increasing the upper limit failure frequency of the muffler and enabling it to have good mid to high frequency sound-absorbing performance. The muffler uses glass wool as the sound-absorbing material, and the channel is lined with galvanized perforated sheet and ultra-fine glass cotton cloth protective layer. According to the selected area of the small channels, various duct sections can be formed except for the specification table.
After the user installs this product as required, its maximum noise level will not exceed 85-90 decibels.
2、 Specification parameters:
| Serial Number |
Model |
Fan nameplate air volume |
Nominal size（m） |
Reference weight |
Application examples of power plant boilers (for ordering reference) |
|
|
B |
H |
|||||
|
1 |
GF-5 |
4～6 |
1.2 |
1.6 |
1750 |
N6 type steam turbine, 35T/H boiler air supply fan inlet |
|
2 |
GF-7 |
6～7 |
1.2 |
2.4 |
2400 |
N12 type steam turbine, 60T/H boiler air supply fan inlet |
|
3 |
GF-10 |
8～12 |
1.6 |
2.4 |
2950 |
N25 type steam turbine, 120T/H boiler air supply fan inlet |
|
4 |
GF-13 |
11～15 |
2.0 |
2.4 |
3400 |
|
|
5 |
GF-18 |
15～20 |
2.4 |
2.4 |
4400 |
N50 type steam turbine, 220T/H boiler air supply fan inlet |
|
6 |
GF-20 |
18～23 |
2.0 |
3.4 |
4650 |
|
|
7 |
GF-23 |
20～25 |
2.0 |
4.0 |
5500 |
N100, N125 type steam turbines |
|
8 |
GF-25 |
23～29 |
2.8 |
3.2 |
5850 |
|
|
9 |
GF-35 |
30～42 |
4.0 |
3.0 |
7200 |
|
|
10 |
GF-45 |
38～50 |
4.0 |
3.2 |
10500 |
N200 type steam turbine, 670T/H boiler air supply fan inlet |
|
11 |
GF-50 |
45～60 |
4.8 |
4.0 |
13600 |
|
|
12 |
GF-60 |
50～70 |
5.2 |
4.0 |
14400 |
N310 type steam turbine, 1000T/H boiler axial flow fan inlet air |
|
13 |
GF-70 |
60～85 |
5.0 |
4.0 |
18500 |
|
|
14 |
GF-90 |
75～100 |
5.5 |
5.5 |
21000 |
|
|
15 |
GF-100 |
90～115 |
5.6 |
6.0 |
23000 |
|
Note: Our company can design mufflers with any specifications based on user provided parameters such as flow rate and interface size!
Related products:
Previous article: Maze style fan muffler
Next article: Roots blower silencer
