In the boiler system, the structural and functional design of the stainless steel insulated water tank is of utmost importance, directly related to the stable operation and use safety of the system.
In terms of key interface configuration, the water inlet is connected to the make – up water pipe, and a check valve is essential. It is like a loyal guard, preventing water from flowing back, ensuring the unidirectionality and stability of the water – making – up process, and maintaining the normal water level in the tank. The water outlet is connected to the boiler feed pump, and the adaptation of the pipe diameter is crucial. Generally, it needs to be determined according to the pump flow rate, so that the water flow velocity is maintained at 1 – 2m/s, ensuring smooth and efficient water supply to meet the water demand of the boiler. The diameter of the sewage outlet is not less than DN50, located at the “strategic position” at the bottom of the tank. Regularly opening it can easily discharge sediment, ensuring the cleanliness of the water in the tank and avoiding the accumulation of impurities affecting the operation of the boiler. The diameter of the manhole is greater than or equal to 450mm, providing a passage for internal maintenance operations. With a gasket, it can effectively prevent water leakage and ensure the overall tightness of the tank. The overflow port is located 50mm higher than the highest water level, and its pipe diameter is the same as that of the inlet pipe. When the water level in the tank rises abnormally, it can discharge the excess water in time to prevent overflow and protect the equipment and the surrounding environment.
In terms of pressure and structural strength, open – type water tanks have no pressure – bearing requirements. The top is open or equipped with a breather valve, which can avoid the formation of negative pressure in the tank due to factors such as water – level changes during operation, thus damaging the tank structure. For closed – type water tanks, the pressure problem needs to be treated with caution. The design pressure should be clearly marked, such as the common 0.6MPa, and a pressure gauge should be equipped to monitor the pressure value in real – time. The safety valve will act quickly to release pressure when the pressure exceeds the safe range. The thickness of the tank material should pass a strict hydrostatic test, and the test pressure reaches 1.5 times the design pressure to verify its pressure – bearing capacity. Vertical water tanks are equipped with stiffeners, which are like strong “armor” for the tank, enhancing the vertical compressive capacity. Horizontal water tanks are equipped with saddle – type supports, and the load – bearing capacity is not less than 1.2 times the full – water weight of the tank, providing stable and reliable support for the tank to ensure its safe operation when fully loaded.
A reasonable structural and functional design enables the boiler stainless steel insulated water tank to operate stably and efficiently, effectively ensuring the normal operation of the boiler system.
