Storage tank is used for processing or storage of material containers, widely used in food, pharmaceutical, wine, dairy, chemical industry and other industries.When customizing the storage tank, it is necessary to design the appropriate tank according to its use, and the thickness of the tank is related to the volume, raw materials, specific gravity, pressure, temperature, corrosion, environmental conditions and other factors of the tank.So, how to determine the thickness of the tank?
1. Volume factor of storage tank.The larger the volume, the thicker the planned tank is than the smaller the tank volume.The quantitative thickness is obtained through theoretical accounting or experience.
2. Raw material factors of storage tanks.Divide metal and non-metal, storage tank raw material is divided into metal and non-metal.A strong metal tank is thinner than a weak non-metal tank.In addition, under certain conditions, there is a certain corrosion thickness every year, so when planning the thickness of the tank, in addition to ensuring the basic thickness of the tank under working conditions (theoretical calculation of equipment), the corrosion thickness and allowance within the planned life of the tank should be added.
3. Pressure factors of storage tanks.The greater the working pressure, the greater the planned tank thickness.In the meantime, the metal storage tank can accept greater pressure.Non-metallic tanks accept less pressure or can only be used at normal pressure.The thickness of the storage tank is based on different volumes, data, specific gravity, pressure, through theoretical accounting or experience.
4. Temperature factor of storage tank.High temperature generally select metal storage tanks and metal lining, the greater the working temperature of the tank, the planning data should be temperature resistant, the thickness of the tank is thicker than the normal temperature.Non-metallic storage tank plastics accept lower temperature.
5. Corrosion factors of the loaded materials.Large corrosion, a certain amount of constant corrosion every year, the storage tank thickness should be thickened, the thickened thickness is the corrosion thickness within the life.There is corrosion but only on the surface (the barrier layer occurs), and the tank thickness should also be increased.The specific thickness of the addition is obtained through experience.
6. Environmental factors.The main tank surface corrosion problem, metal tank in corrosive conditions and natural environment, such as poor paint or irregular paint, tank surface will also corrode.Therefore, the environmental condition of the storage tank is poor, and the thickness of the storage tank needs to be added.
7. Other factors.According to the structure and process of the storage tank, the mechanical load-bearing parts also need to be partly thickened and strengthened. For example, the two heads of the horizontal storage tank should be thickened than the tank body, because the head will change book when spinning.The bottom of the flat bottom storage tank should also be thickened, because the bottom pressure is high, and the bottom can not be painted and maintained.