A method for controlling the stable operation of a fan

Abstract

The invention discloses a fan stable operation control method. The fan stable operation control method comprises the following steps: (1) a rotating speed curve n of a fan between Q air volumes and H pressure under different rotating speeds is drawn; (2) a maximum pressure operation curve S0 is drawn; (3) a safety operation control curve S1 is drawn; (4) a fan safe operation buffer area is set; and (5) the fan is adjusted. The fan stable operation control method enables the fan to operate in the fan safe operation buffer area, is safe and reliable in operation, effectively prevents such various problems as countercurrent, surge and stall caused by operation of the fan in unstable areas, improves the system operation safety and reliability, can reduce the energy waste to prevent safety problems in system operation, and realizes the energy saving effect.

Description

technical field [0001] The invention relates to a fan operation control method. Background technique [0002] Axial flow fans and mixed flow fans rely on their air volume to complete the ventilation process, so in many cases we need to consider the air volume of axial flow fans and mixed flow fans, in order to master the control of axial flow fans and mixed flow fans , we must first start with several factors that affect the air volume of axial flow fans and mixed flow fans, such as pipeline characteristics, temperature, humidity, pressure and other factors, and control each influencing factor within an effective and reasonable range, then the axial flow The air volume of fans and mixed flow fans is not difficult to adjust and control. The operation of axial fans and mixed flow fans has an inseparable relationship with the speed of axial flow fans and mixed flow fans. The speed of axial flow fans and mixed flow fans will also affect the air volume. the size of. [0003] Wi...

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Problems solved by technology

[0012] At present, the method to avoid the above problems is mainly to monitor the operation status through a large number of monitoring equipment. If a problem occurs, change the system operation requirements in time, or change it artificially to avoid the above problems. Usually, it is necessary to A large number of equipment and manpower are involved, the cost is high, the maintenance is also relatively difficult, and the follow-up maintenance cost is also high, so the research on this issue is of great significance

Human intervention is generally performed by adjusting the blades or venting, venting, etc., or by adjusting the blades and reducing the working efficiency of the fan system; venting or venting is to release excess wind through pipelines and valves , no matter which way is achieved by reducing efficiency or releasing energy, resulting in a great waste, how to achieve energy saving through control is also of great significance

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