Several methods for adjusting the air volume of high-pressure fans
Several methods for adjusting the air volume of high-pressure fans
The air volume of a general high-pressure fan can be adjusted. If the wind force is too strong or too weak, it will endanger the normal operation of the high-pressure fan. Therefore, when using high-pressure fans, it is recommended to adjust the air volume to a suitable range of wind power. Next, we will introduce in detail some methods for adjusting the air volume of high-pressure fans:
1、 Adjust the opening and closing degree of the windshield
The reliable adjustment method of high-pressure fan is very simple, and the method of adjusting the opening and closing degree of the wind shield is worth mentioning. By adjusting the opening of the fan baffle, the properties and parameters of the pipeline network of the high-pressure fan will change, and the output flow rate will also change. This achieves the goal of regulating the output flow rate of the fan during constant speed operation.
2、 Change the angle of the fan blades
When the performance curve of the fan network remains unchanged, the high-pressure fan changes the angle of the fan blades to alter the performance curve (H-Q curve) of the fan. The operating point will move along the characteristic curve of the network to achieve the purpose of adjusting the air volume.
3、 Change the speed of the fan
High pressure fans with stable quality will adjust the air volume by changing the speed of the fan. When the pipeline characteristics of the high-pressure fan remain unchanged and the angle of the fan blades remains unchanged, changing the fan speed causes the fan's curve to move parallel, and the operating point will move along the pipeline characteristic curve to achieve the purpose of adjusting the air volume.
4、 Adjustment of inlet and outlet pressure valves
The adjustment of the electric air valves at the inlet and outlet of the high-pressure fan is to change the characteristics of the network management, not to change the characteristics of the high-pressure fan. The category of exhaust air volume regulation is generally located directly below the rated characteristic curve of the high-pressure fan under all operating conditions. When the exhaust system pipeline is set on the suction side of the high-pressure fan, its basic adjustment principle is the same as that of the inlet and outlet electric air valves; It is reasonable to adjust the high-pressure fan characteristic curve based on the working pressure of the high-pressure fan channel.
5、 Synchronous belt drive speed regulation
Some high-pressure fans directly connected to the motor can be upgraded to belt bearing connections and belt transmission systems when they reach the compressive strength of the centrifugal impeller. Adjust the speed ratio to improve the working efficiency of the high-pressure fan. This method is generally used for high-pressure fans in mechanical equipment supporting facilities and supporting equipment for mechanical equipment. It has a wide range of applications, due to factors such as the length and size of construction sites, pipelines, natural environment on site, as well as adjustments to industrial equipment or environmental protection machinery filtration methods for each new project. For synchronous belt driven high-pressure fans, the wider the audience, the more they can adjust the speed ratio of the high-pressure fan according to the site conditions, thereby achieving the desired effect.
If the wind power of the high-pressure fan is not scientific and poses a significant threat to its later use, in addition to the methods mentioned above, it can also be used
1. Replace the motor with a higher speed: The higher the motor speed, the greater the output air volume of the fan;
2. Replace with larger blades: Larger blades can provide greater airflow to meet the needs;
3. Installing a diffuser: Installing a diffuser at the outlet of the high-pressure fan can increase the output air pressure and volume;
4. Reduce pipeline resistance: Pipe bends, filters, gate valves, etc. all increase pipeline resistance, and reducing these resistances can increase air flow;
5. Changing the inlet and outlet of the fan: Reasonably designing the size and position of the inlet and outlet can improve the efficiency of the fan;
The working principle of high-pressure fans is very clear and simple, without too many complicated processes. This simple design principle lays a solid foundation for its development. Each impeller blade of the high-pressure fan increases the degree of compression and acceleration. As the rotation progresses, the kinetic energy of the gas increases, further increasing the pressure of the gas passing through the side channel. When the air reaches the connection point between the side groove and the discharge flange, the gas is squeezed out of the blades and discharged from the pump body through the outlet muffler. So when using a high-pressure fan, if you want to adjust the air volume of the high-pressure fan, you can try the above methods!