A boiler water supply system

Abstract

The present invention provides a boiler water replenishment system, which includes a pre-pump pipeline for the boiler feed water pump to extract demineralized water, a demineralized water supply system and a pressure stabilizing device, the pre-pump pipeline is connected with the output pipeline of the demineralized water supply system; The output pipeline is provided with a first check valve; the pressure stabilizing device is connected to the pipeline in front of the pump through a connecting pipeline, and a regulating valve is arranged on the connecting pipeline; the pressure stabilizing device can make the front of the pump The pressure in the pipeline remains constant. In the boiler water supply system of the present invention, the pressure stabilizing device can keep the pressure in the pipeline in front of the pump constant, avoid negative pressure in the pipeline in front of the pump, thereby reducing the possibility of cavitation in the boiler feed water pump; at the same time, the pressure on the output pipeline The first check valve set can prevent the demineralized water in the pipeline before the pump from softening the water supply system, thereby helping to maintain a constant pressure in the pipeline before the pump, and further reducing the possibility of cavitation in the boiler feed water pump. reduce.

Description

technical field [0001] The invention relates to the technical field of water replenishment systems, in particular to a boiler water replenishment system. Background technique [0002] Many cigarette companies have installed boilers, and the boiler feed water uses softened water after deoxygenation. The deoxidized water usually adopts convenient, practical and effective thermal deoxidation. Thermal deoxidation means that the demineralized water When heated above 100°C in the deaerator, the oxygen in the water will escape from the softened water. However, due to the high water level of thermal deoxygenation, when the boiler feed water pump rotates suddenly or the load suddenly increases, it is easy to cause negative pressure in the front-end pipeline of the pump and cause cavitation of the boiler feed water pump, so that the impeller of the boiler feed water pump is easily damaged, resulting in water supply failure. The flow rate cannot meet the required water supply volume, ...

AI Technical Summary

Problems solved by technology

However, due to the high water level of thermal deoxygenation, when the boiler feed water pump rotates suddenly or the load suddenly increases, it is easy to cause negative pressure in the front-end pipeline of the pump and cause cavitation of the boiler feed water pump, so that the impeller of the boiler feed water pump is easily damaged, resulting in water supply failure. The flow rate cannot meet the required water supply volume, and even cannot supply water to the boiler normally

[0003] In the prior art, the method to solve the cavitation of the boiler feed water pump is usually to make the installation height of the deaerator higher than the installation height of the boiler feed water pump, so that the overall building of the boiler room is higher, or the partial building where the deaerator is installed is very high , not only increase the construction cost, but also the appearance of the building is not beautiful

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