During the operation, it was found that the delivery air cooler outlet cooler was put into the control door to open it is a necessary condition for the delivery of the air compressor. However, during low-load operation in winter, due to the low ambient temperature and the temperature of the conveying air, the cooling of the air through the outlet cooler of the air compressor may cause the temperature of the conveying air to be too low. This phenomenon will lead to an increase in the moisture content of the fly ash, increasing the viscosity and severity of the ash, resulting in the shutdown of the pipeline and causing the shutdown of the ash system. In order to avoid this, the operating environment parameters for controlling the opening of the cooler valve are added to the logic of the cooler input control gate. When the temperature of the delivery air outlet is lower than the control parameter, the cooler input control valve will not be opened. The maximum feasible temperature of the conveying wind is maintained, the fly ash conveying temperature under low load conditions is improved, and the pipe blocking phenomenon of the conveying pipe is reduced. The control parameters of the fly ash system have no fixed values ​​and no corresponding experience. During the trial operation of the fly ash system, the trend of the system work history is analyzed, and the working state of the system is analyzed on the ash pressure curve. When the ash transfer process is in the unloading stage, the ash pressure of the pipeline will gradually increase and reach. A stable delivery pressure P0, when the ash in the ash hopper is emptied, the delivery pressure will drop until it is lower than the set pressure PL, at which time the ash hopper can be considered to be empty for the next cycle of operation. It can be seen that the size of the ash control pressure PL plays a key role in the entire ash conveying process. In operation, according to the principle, the cycle number and time of each control branch are gradually adjusted, and the fly ash control pressure PL is adjusted according to the actual operation conditions, and the ash conveying process of each control branch is controlled within the feasible range. . Fig 1002 Hammer Union,1002 Hammer Union,Male Hammer Union,Female Hammer Union Hebei Huayu Special Rubber Co.,Ltd , https://www.api7khose.com