The maintenance level of the pump is the first part of the maintenance management of the water pump and the first section of the electric machine, the rationale for the centrifuge pump and the operation of the structural centrifuge pump, which, in short, transports the liquid through the operation of the centrifuge. A synopsis of the working principles of the centrifuge pump can be seen: the pump is pumped when the pump casing and the pipe are filled with liquids (the original motive was to drive the wheel to rotate. Liquids are released from the end of a leaf wheel by operation of centrifugal forces [from the centre of the wheel to the outer edge and to acquire energy to move at high speed from the outer edge of the wheel into a vortex pump shell]. After a spiraled snail-hull flow and dispersion tube, the flow of the liquid slowly slows down, making the kinetic energy of the liquid into a pressure energy (potential), increasing the pressure of the liquid and finally venting it out of the pipe. At the same time, during the operation of the pump, the pump wheel centre creates a local vacuum due to the drop in the absolute pressure from which the liquid is thrown out of the vessel's export, while the liquid pressure from entering the pipe is the local atmospheric pressure, which is greater than the pressure from the pump's export, so that the pressure differentials between the two are formed, and the fluids flow into the pump as a result of this difference of pressure, along the suction tube, so that the pumping and pressure of the liquid continue. The centrifuge pump consists mainly of pumps, pumps, caps, leaves, axes, seals, bearings, axles, etc. Section ii: operations and management of pumps i; operation of pumps (centrify pumps)1; inspection of pumps prior to operation: staff members should first conduct a full check of pumps before they are activated: whether the components are normal, the crew is flexible, the pumps are sound or not, the bearings are clean, the oil table is standard, the cooling water is open, the water level is in place, the water valves are closed, the power supply, switches, meters, etc., are functioning properly. 2. Activated motor: the pump shall be filled with delivery media and drained of air before running. (mechanical sealed pumps do not allow dry rotation) when the system begins to deliver the medium, the pressure rises can be observed on the pressure table, then the water valve is slowly opened and the pressure pointer slowly declines until the pipe pressure is normal. The current table gradually reached a rated value, indicating that the pumps were functioning. Check, see, listeners run various instruments, etc. Fill out the running records. It then conducts the required mobile inspection to monitor the operation of the crew to ensure water supply. 3. The water valves shall be slowly shut down before the pump is shut down so that the power is finally empty, when the valves are completely closed, the power is cut and the power is stopped. (to check if the control cabinets are intact, the valves, the valves are intact, the pump exit valves are closed) section iii, the maintenance and maintenance of the pumps for the first and the contents of the maintenance; level i maintenance: 1 and i: keep the pumps clean, monitor the pump levels, keep track of the operation of the pumps and keep records of their operation; check whether the branch screws are loose, vacuum and pressure tables fluctuate. 2. Secondary maintenance: in addition to completing all the elements of primary maintenance, vacuum meters and pressure meters catheters should be cleaned to ensure that the instructions are correct and reliable. Refrigerated water and sealed pipes are cleaned to ensure cooling and sealing of pumps. 3. Maintenance cycle level i maintenance is carried out by duty personnel on a daily basis and level ii maintenance is performed by duty personnel on a 70-hour (one-month) basis. Ii. The frequent failure of pumps and their removal structures, although simple, unsophisticated and more reliable, are inevitable and, if not eliminated in a timely manner, affect normal work. Therefore, in the event of a failure, the cause of the failure should first be analysed and removed in a timely manner. 1. Reasons for non- or small (reduced) discharges of water following the start of the pump: pump gas is not drained out of the water valves and there are impurities in the pipes, which also prevent water from being pumped and should be cleaned up. Leaf rotation lanes or piping pipes are blocked and pumps are removed and cleared. The water level of the ponds is not enough to wear the mouthring, resulting in an increase in the gap between the wheel and the mouthring, resulting in the flow of high-pressure water back into the water valve in the pump casing and reducing the flow. Pumping into pipes was poorly installed. [the bottom valve of the pump is blocked by miscellaneous or the bottom valve is not opened or not fully opened. (see the failure of the pump bottom valve) )2 the noise and vibration of the pump is loose or the gasket is not solid and causes vibration. Pump axes and engines are different axes, or pump axis bends. (c) poor or excessive water intake conditions, causing air to enter the pumps or to cause gas erosion, noise and vibration. The bearings are damaged or worn. 3. Axis overheating: inappropriately installed lubricated or uncleaned bearings, excessive use time, distilled (damaged bearings) section iv. Base valves of the secondary system of the pumps: four valves and axes, when pumped up, four (opened) floor valves are closed, when pumped up, vacuums are created on the side of the water and the water is pumped up by atmospheric pressure. Multifunctional control valves: the multifunctional control valves function both as gate valves and reversible valves 1. The main structure of the multifunctional control valves is composed mainly of valves, small ball valves, small filtration rooms and diaphragm transfer units. 2) characteristics: a. Elimination of water hammers works well. The technical principles of slow-opening, fast-closed, slow-cut hammers are integrated to prevent the generation of pump hammers and pump hammers. B. Operational. All you have to do is operate the pumps, stop the buttons, and the valves are automatically open according to the pump operating procedures
