脱硫题库之填空(国外英文资料).docVIP

脱硫题库之填空(国外英文资料) 1, with frequency control of motor speed in the operation of the screw feeder in a sudden jump stop, may (frequency converter) is the cause of fault, the feeding motor ontology (high temperature) or mechanical transmission parts jamming. ? If the actuator is slow or not moving, the most likely reason is that the regulators (feedback device) is not adjusted. ? In the same working environment, the actuator response is slower. ? The speed adjustment of the inverter is mainly by changing the voltage, frequency, and phase of the power supply to change the speed of the motor. ? The pressure transmitter is used to convert the pressure effect of the elastic component to the signal (voltage) signal to reflect the change in the pressure. ? The actuator insulation resistance should be qualified, the operation balance of the electric test, the opening indicator (no beating). ? It should be (alkaline) for desulphurization. ? Boiler efficiency with desulfurization system (slightly down). ? The purpose of spraying limestone powder into the furnace is (desulfurization). ? The flushing pump is usually adopted (centrifugal) type. ? When rolling bearings are assembled on the shaft, they should be adopted (chi-hole) system. ? The three widely used views are mainly, (bent), left view. ? Mechanical seal is mechanical seal compared to packing seal. ? The material of the pump shaft is (45). ? The normally used pump has no more than (0.05) radial movement of the shaft. ? In belt transmission, the old and new belts will be used together (shortening the new life span). ? The next few pumps are relatively large (the axial pump). ? 18 and 30 often say? The 30 in engine oil refers to the viscosity of the (specified temperature). ? 19, Z41H? It is a type of valve, where z indicates that this valve is (gate valve). ? The pump shaft should be preheated before the welding, and the backfire should be carried out after welding, and the shaft of the pump shall not be used. ? The mortar