XINLI BOILER

Biomass boilers can also be used for constant pressure with a make-up pump

04 Oct, 2021

　　Adopt the constant pressure mode of the make-up water pump: when the pressure of the heating system is high, the pressure required by the system cannot be known when the water tank is used. At this time, the constant pressure mode of the make-up water pump should be adopted. This constant pressure method is widely used in biomass boiler heating systems. The installation in this way consists of a make-up water tank, a make-up pump, etc. When the system is operating normally, the pressure regulator adjusts the make-up water pump to continuously add water and make it compatible with the leakage of the system, so as to maintain the stability of the system pressure.

　　When the water pump is out of service, the shut-off valve in front of the pressure regulator can be closed. The make-up water pump continues to add water to maintain the static pressure required by the system. This kind of constant pressure method does not need to shrink the water tank, so the equipment cost is low. In addition, the make-up water pump adds water and constant pressure, the power of the water pump is not large, and the operating cost is also small. Therefore, this method is quite common in hot water heating systems. The disadvantage of this constant pressure method is that if the system suddenly loses power, the make-up water pump will lose the constant pressure function. When a sudden power failure causes the water pump and the make-up water pump to stop operating, the pressure system is put into operation, the check valve is automatically opened, and the pressure water will flow through the biomass boiler and be discharged from the gas collecting tank, so as not to let the waste heat of the biomass boiler cause the boiler. Water vaporizes. At the same time, the main valve of the supply and return hot water pipes should be closed to separate the heat source from the heating network.