Application of intelligent control and protection of hot water submersible pump

With the rapid development of variable frequency drive technology, computer technology and information technology, the traditional hot water submersible pump manufacturing industry has been toward energy saving, intelligent direction.
  QJR hot water submersible pump intelligent control and protection is a certain emblem processing capacity, in the well with hot water submersible pump application, control and protection can partially replace the function of artificial potassium, the equipment has been planted from the pump factory Intelligent control and protection of the intelligent control technology (software) hardware and integration, the hardware generally include the inverter (cabinet), PLC and pump protection unit. Intelligent control and protection for the safe and reliable operation of the pump and energy conservation has a very significant role.
  Wells with hot water submersible pump operating point is the pump performance curve and the system curve (also known as the pipeline or container to be sexual curve) intersection. The operating efficiency of the pump at the operating point fluctuates violently due to the different operating points. , The operating efficiency of a hot water submersible pump can vary by 40% depending on the operating point.The difference is the potential of the pump system to save energy and improve its reliability.
  The performance curve of the traditional hot water submersible pump is the trajectory of the pump, such as the most commonly used flow-lift curve, NPSHr, and so on. First-class curve and so on.
  In the variable frequency (frequency), the hot water submersible pump performance curve with the pump speed changes in accordance with similar laws of movement, the trajectory of the formation of multiple performance fan. Each sector can be composed of a performance curve when connecting the maximum speed and a performance curve set at minimum speed, such as flow-lift fan, NPSHr flow, and so on.
  Performance of hot water submersible pump fan performance curve than the pump has a greater intersection with the system curve and more control selectivity. The variability of this interaction leads to large fluctuations in the efficiency and reliability of the pump, which is necessary for intelligent control and protection of the pump. If the pump control and protection to adapt to this change, the pump operation efficiency is high and smooth and maintenance is low. On the contrary, if the pump control and protection can not adapt to this diversity, the wells with hot water submersible pump operating efficiency is low, uneven and maintenance and high.