PLC application constant pressure water supply water system
I have always heard that Germany is very strong. Why is that? Today's article, Xiao Bian will join you to uncover the "secret" made in Germany. Constant pressure water supply system Constant pressure water supply electrical system 1. Control requirements At present, according to the requirements of China's Ministry of Housing and Urban-Rural Construction Pipeline Water Supply Pressure Service, the urban water service pressure is 0.14 MPa. This pressure can only ensure that the water supply reaches 3 to 4 floors; and the water supply above the fourth floor is the scope of secondary water supply. . The average pressure of the average pipe network in the general city is 0.3 MPa or more, which is much higher than the national standard and basically meets the water pressure requirements of the 6-storey users in the city. However, from the perspective of safe operation, when users of individual 6-floor or higher-level users are located in high locations and the water pressure of the public water supply network cannot meet the user requirements, secondary water supply facilities must be added. In the secondary water supply system, the constant pressure water supply system shown in the figure above is generally used. In order to meet domestic and fire-fighting water use, these two levels of pressure are generally set. Normally, water is supplied according to the domestic water pressure. When a fire occurs, it can be manually or automatically switched to the fire pressure water supply. In this case, the fire water supply pressure is set to 0.90 MPa. 2 program debugging commentary Constant pressure water supply system control procedures, including subroutines, interrupt programs, and main programs. Subroutines are used for declaring parameters and are executed whenever the power is turned on or the fire water supply and living water supply are switched. Interrupt the program and calculate the average of the five measurements as the PID instruction detection input. At the same time, the actual detection value is calculated as the standard input value of the PID command every 100ms. At the same time, the output value of the PID algorithm is also calculated as the actual analog output value of 0~32000. The main program, conditionally executes subroutines, declares parameters. Indoor Cable,Indoor Fiber Optic Cable,Indoor Fiber Cable,Indoor Optical Fiber Cable Huizhou Fibercan Industrial Co.Ltd , https://www.fibercannetworks.com
