XINLI BOILER

Constant pressure method of biomass boiler heating system

10 Nov, 2021

　　The constant pressure method in the biomass boiler heating system: In the high-temperature hot water supply system, because the water temperature is higher than the saturation temperature of water under normal pressure, the pressure in the system should be higher than the saturation pressure of the corresponding water supply temperature, so that it can Avoid hot water vaporization and water shock. Water is a non-compressible fluid, once it leaks, it will drop its pressure; on the contrary, water heating will shrink in volume, and if the pressure cannot be stabilized, it will also destroy the equipment in the heating system. Therefore, in order to avoid depressurization and vaporization and contraction and boost, the high-temperature hot water system must stabilize the pressure in the system, which is the constant pressure. There are several ways of constant pressure for hot water heating system:

　　1. Adopt the constant pressure method of overhead water tank

　　The fixed pressure point of this method is set at the inlet of the hot water circulating pump or the main backwater line, and the installation is only an elevated water tank. Its structure is simple, the work is stable and reliable, the system pressure can be stabilized, and the system network can meet the overflow and Replenishment request.

　　2. Adopt the constant pressure method of the make-up water pump

　　When the pressure of the heating system of biomass boiler manufacturers is high, the use of advanced water tanks cannot ensure the pressure required by the system. In this case, the constant pressure method of the make-up water pump should be adopted. This constant pressure method is commonly used in hot water boiler heating systems.

　　The continuous water supply and constant pressure of the feed water pump of the biomass boiler manufacturer is controlled by the electric contact pressure gauge. The inlet pressure of the circulating water pump can be maintained within a certain range. When the pressure is lower than this range, the electric contact pressure gauge will act and connect the feed water pump motor circuit. When the make-up water pump is running and the inlet pressure of the hot water circulation pump rises and exceeds a certain range, the pressure gauge of the hot water boiler is to cut off the power supply of the make-up water pump, and the make-up water pump is out of service.