The importance of low vibration values for chemical pumps
浏览次数： Time: 2019-12-19 07:51
For those of us who make chemical pumps, there are many performance indicators, such as: flow, head, speed, efficiency, material, bearing temperature rise, noise, vibration, current value and so on. Today, let's talk about the vibration value. Many people do n’t understand that vibration
For those of us who make chemical pumps
, there are many performance indicators, such as: flow, head, speed, efficiency, material, bearing temperature rise, noise, vibration, current value and so on. Today, let ’s talk about the “vibration value”.
Many people do not understand what the vibration value is. It refers to the maximum vibration value when a pump is running at the operating point, the front and rear points of the bearing, the pump foot is low, and the motor bearing position. The minimum requirement for chemical pump vibration specified by national standards is 4.5mm / s. The American API standard has lower vibration values, so it is obvious how important the vibration value is for a chemical pump. So what are the factors that affect the vibration value of a pump? The author has been engaged in chemical pump manufacturing and research and development for more than ten years. In summary, the factors affecting the vibration value of chemical pumps are as follows:
First, the manufacturing aspect of the pump itself: the concentricity of the front and rear bearing positions, the accuracy of the coupling and the concentricity, the concentricity of the pump shaft, the imbalance of the impeller and rotor parts, the flatness of the base and so on.
2. Installation and operation: cavitation, pipeline resonance, foundation fixation and compliance with requirements, medium composition, etc. Among them, cavitation is an extremely important factor affecting the vibration value of chemical pumps, and it is also the most common factor affecting vibration. the reason.
Alright, that's all for today. In the next issue we will talk about the efficiency of chemical pumps.