1, before the start of multistage centrifugal pump inspection multi-stage centrifugal pump lubricant name, model, the main performance and the number of filling whether the technical documentation requirements; bearing lubrication system, sealing system and cooling system is intact, bearing oil, Whether the waterway is smooth; circling the pump rotor 1 ~ 2 turn, check the rotor for friction or stuck phenomenon; in the vicinity of the coupling or belt guard, etc., whether there are obstacles to rotation; multistage centrifugal pumps, bearings Block, the foundation of the motor foundation bolts are loose; multi-stage centrifugal pump working system valves or ancillary devices should be in the pump load minimum position, should close the exit control valve; start multistage centrifugal pump to see whether the impeller steering whether And design to the same direction, if inconsistent, it is necessary to completely stop the impeller rotation, adjust the motor wiring, before starting again. 2, multi-stage centrifugal pump water pump Before starting, the pump housing and suction pipe must be filled with water, it is because of the presence of air, multistage centrifugal suction port vacuum can not be formed and maintained. 3, Multistage Centrifugal Pumps Pumps for transporting high temperature liquids, such as boiler feed pumps in power plants, must be warmed up before the multistage centrifugal pumps are started. This is because when the feed water pump is started, the high-temperature feed water flows through the pump, causing the temperature of the pump body to rise quickly from room temperature to 100-200 ° C, which causes the temperature difference between the inside and outside of the pump and between the components. If there is not enough Heat transfer time and appropriate measures to control the temperature rise will cause uneven expansion of the pump around, resulting in deformation of the various parts of the pump, wear, vibration and axle suspension accidents.
Sad Therapy Lamp,Bright Light Therapy Lamp,Miroco Light Therapy Lamp,Light Therapy Box For Depression
Guangdong Jishengke Industrial Co., Ltd. , https://www.suronart.com