ISG type vertical pipeline centrifugal pump

The selection of ISG type vertical pipeline centrifugal pump should be considered from five aspects based on the process flow, water supply and drainage requirements, including liquid conveying capacity, device head, liquid properties, pipeline layout, and operating conditions. $n　　1、 The flow rate of the colloid mill is one of the important performance data for pump selection, which directly affects the production and transportation capacity of the entire device.

　　ISG type vertical pipeline centrifugal pump

Improve the efficiency of centrifugal pumps

When selecting, compare the selection plans of various suppliers and try to choose the most efficient plan while considering cost-effectiveness; Assign a certain number of professional personnel to supervise the manufacturing quality of key components that affect the efficiency of the water pump, such as impellers, pump bodies, pump covers, and deflectors (vertical long shaft pumps). Especially, control the quality of the impeller's wing shape, outlet angle, blade division, flow channel shape, smoothness, etc., so that the delivered products are high-efficiency products under current production conditions. During the installation and debugging process on the production site, it is necessary to ensure that the pump foundation is reliable, well aligned with the drive machine, the front and rear valve switches are flexible, the pipeline layout design is reasonable, the on-site control is safe and feasible, and all operating monitoring instruments are complete and accurate to ensure real-time monitoring of the pump operation process. During the operation of the water pump, attention should be paid to the inspection of the equipment, and any abnormal situations should be reported immediately. During normal minor and major repair cycles, vulnerable parts should be inspected and replaced to ensure the efficient and safe operation of the pump.

Many operators believe that the lower the pumping head, the lower the motor load. Under this misconception, when choosing a water pump, the head of the pump is often chosen to be very high. In fact, for single-stage centrifugal pumps, when the pump model is determined, the power consumption is directly proportional to the actual flow rate of the pump. The flow rate of the water pump will decrease with the increase of the head, so the higher the head, the smaller the flow rate, and the lower the power consumption. On the contrary, the lower the head, the greater the flow rate, and the greater the power consumption. Therefore, in order to prevent motor overload, it is generally required that the actual pumping head of the water pump should not be less than 60% of the calibrated head. So when high head is used for low head pumping, the motor is prone to overload and heat generation, and in severe cases, it can burn out the motor. If emergency use is required, a gate valve must be installed on the outlet pipe to adjust the water flow rate (or a small outlet must be blocked with wood or other materials), in order to reduce the flow rate and prevent motor overload. Pay attention to the temperature rise of the motor. If the motor is found to be overheated, the outlet flow rate should be reduced or the machine should be shut down in a timely manner. This can also easily lead to misunderstandings. Some operators believe that blocking the water outlet and forcibly reducing the flow rate will increase the motor load. In fact, on the contrary, the outlet pipes of regular high-power centrifugal pump irrigation units are equipped with gate valves. In order to reduce the motor load during unit startup, the gate valves should be closed first, and gradually opened after the motor starts. This is the principle.

operation control

(1) The pH value of the absorption tower slurry is the core of the wet desulfurization system reaction process. Increasing the pH value of the slurry and adjusting the desulfurization operating parameters in a timely manner due to excessive slurry density can easily cause scaling on the pipe wall or hinder the inlet filter screen. Therefore, it is necessary to analyze the parameter status through data analysis to maintain it in an optimal state.

(2) Operators should improve their operational skills and equipment inspection quality. When the slurry circulation pump is stopped, pipeline flushing should be strengthened to prevent residual slurry in the pipeline. During equipment inspection, carefully observe the oil level, oil quality, cooling water return flow rate, and equipment appearance. Use thermometers and vibration meters to measure the temperature and vibration of the equipment. If any abnormalities are found in the equipment, decisive measures should be taken, such as adding lubricating oil to the bearing box or switching to the standby pump for operation. During the pump shutdown period, maintenance personnel should promptly repair the equipment, and warehouse personnel should prepare spare parts for the equipment to ensure timely replacement and normal operation.

(3) The process water system is an important guarantee for the operation of equipment. The slurry circulation pump requires cooling water for sealing and cooling, and the reducer also needs cooling water for cooling. Therefore, it is necessary to ensure the normal operation of the process water system. The inlet filter screen of the process water pump can filter impurities, so that the pipeline can be unobstructed, and the service life of the mechanical seal dynamic and static rings can also be extended. The outlet of the process water pump maintains normal pressure in order to have sufficient water to cool down the equipment, and the sealing water in the machine seal can also better block the leakage of the slurry.