Solution For Steam Generator Water Pump Can Not Automatically Inflow Water Into Furnace Chamber

When the pressure of the automatic steam generator reaches 0.3 MPa and 0.4 MPa, the pump can not automatically inflow water into the furnace. The main reason is that after the pump has been used for a period of time, the gears or blades are worn out, resulting in a large clearance between the two gears of the gear pump, or an increase in the gap between the blade cover and the blade, causing the leakage of the inlet cavity and the water outlet cavity to increase or decrease, resulting in the pressure difference between the instantaneous inlet cavity and the water outlet chamber can not be established, so that the water pressure in the water tank can not be reached to a certain pressure. Furnace bladder Inside.

At present, there are two types of automatic water pumps for domestic automatic steam generators: one is the gear pump, which uses a pair of meshing gears to rotate at high speed, sucking water from the suction port, and squeezing out of the water outlet through gear extrusion. The other is a vortex pump, similar to the vane pump. It has many water tanks on the two sides of the disc impeller along the circumferential direction. Under the cooperation of the pump body and the pump cover, the intake water is brought to the outlet and the water is pressed out. The characteristics of the gear pump are simple structure, low price, small volume, good self suction, easy to die and easy repair. The requirement for water quality is not too high, but the pressure is not high. The characteristics of the vortex pump are: high pressure and small volume, but the structure is complex, the price is more expensive, and the water quality requirements are higher. Often due to scale or intermittent use, the impeller of the pump is stuck. phenomenon 。

Solution: initial adjustment can be made by adjusting the gap between the impeller and the end cover, balancing the end cover screws (6 of them) in a symmetrical way, tightening the 6 screws a little, and never screw the 6 screws to the end at a time, which may cause the impeller to be unable to rotate and burn the motor, or to accelerate the wear of the impeller and shorten the service life of the pump. If you use it for a period of time, it will happen again. problem There is no room for adjustment. Only replace the new pump. Usually only need to change the impeller, if the whole pump is replaced, the cost will be higher.