The relationship between water level, water pump control mode and energy saving

The relationship between water level, water pump control mode and energy saving The purpose of water level (water pressure) control is to maintain the stability of the water supply flow of the water pump, which is essentially a matter of maintaining the balance of materials. No matter what adjustment and control methods are adopted, the final result still reflects the power consumption of the pump. Why continuous control is better than intermittent control can be seen from the following aspects: 1. From the quality requirements of the control, the transition process of the two-position control is a constant amplitude oscillation process under the action of intermittent control. The water level of the controlled quantity always oscillates between the upper and lower limits. If the upper and lower limits of the set water level are smaller, or the water consumption is larger, the oscillation frequency is higher, and the pump starts and stops more frequently, which will affect the power grid and machinery. The greater the impact; the water pump of such a control system operates intermittently and controls the water level intermittently. If continuous control is used, the water level of the controlled quantity can be continuously controlled. Because feedback control is based on the deviation of the water level, the deviation is the basis of control. As long as the water level deviates from the given value, the system will have a control effect and strive to eliminate The existence of deviation, so it can stabilize the water level at the set value we require. That is to say, the variable frequency speed regulation water supply system can automatically maintain the balance between water supply and water through the PI control function. Its control accuracy is high and the water level fluctuation is small. The water pump of such a control system runs continuously and controls the water level continuously. two. From the perspective of energy-saving effects of water pumps, centrifugal water pumps are most commonly used, which are square-law loads. The most important parameters of a water water pump are flow and head. Water supply power is proportional to the product of flow and head. Let us first understand the characteristics of the lower head and tube resistance. The head characteristic reflects the impact of the water flow on the head, that is, the greater the water consumption, the smaller the head of the water supply system; the speed of the pump decreases, the water supply capacity will also decrease, and the head characteristic will move down. The pipe resistance characteristic is the head required to obtain a certain flow rate in the pipeline; the pipe resistance characteristic is related to the thickness, length, and valve opening of the pipeline. Water pump factory, water pump factoryu003c/pu003e
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