The types of stainless steel storage tanks and the thickness of the design
Stainless steel tank material elements: metal and nonmetal, stainless steel tank metal, nonmetal material with metallic and non-metallic composite material.Strength of metallic materials than the intensity difference of thickness to thin some non-metallic materials stainless steel storage tanks.And under certain conditions, every year there are not necessarily of erosion thickness, is the solution when the thickness of the stainless steel tank, in addition to the condition of guaranteeing the task of the thickness of the stainless steel tank foundation (equipment real calculation), and combined with the stainless steel tank plan life within the oxide thickness and allowance.
Manufacturing installation technology is the most mature vault stainless steel tanks, floating roof tank and stainless steel stainless steel horizontal tank.Factors and conditions: the main appearance of erosion stainless steel tank, stainless steel metal tank under the condition and natural environment erosion, such as poor paint or paint on schedule, stainless steel storage tank will be corrosion appearance.Poor environmental conditions in stainless steel tank, stainless steel storage tanks also need to increase the thickness.Bottom: floating roof tank as usually compare with large volume, the bottom of the bow is adopted marginal board.Double disc floating roof, the plate plate, wall plate and marginal cabin on board, by radial baffle plate and ring to partition separated into a circular tank geometry of self-reliance.Its strengths is buoyancy, good drainage achievement.Floating roof: the roof is divided into single disc floating roof, double disc floating roof and float type floating roof, etc.The influence of the stainless steel tank flange content Flange patterns, apply for using stainless steel tank gasket is consistent.Slick surface flange as usual is used only for high pressure, with thin soft sealing gasket;If under high pressure, the strength of the flange, can also use face of the flange and satiny but should use thick soft gaskets, may use reinforcement ring inside or outside to strengthen ring winding sealing gasket.In such places, metal gasket is not share, when the requirements of the clamping force is too large, cause the deformation of the bolt is bigger that the flange seal (not simple.Assume that want to use metal gasket, it should be lubricated surface, reduce the heat with the gasket area.Like this, under the condition of the bolt tension similar, narrowing the narrow lubrication of the compression stress after will increase.
Corrosion on the material composition, corrosion resistance, steady oxide amount, every year there are coupled to the thickness of the stainless steel tank to thicken, increasing thickness of life within the corrosion thickness.But just outside the erosion corrosion were (intercepted) layer, the thickness of the stainless steel storage tank will be upset.Add more thickness in detail through tutoring.Tank wall: adopt linear tank wall, butt weld should be smooth, contour flat in security.Floating roof steel storage tank top for exposure to add wall stiffness, should follow the site area the size of the wind load, the tank wall at the top of the need to configure the wind ring beam and enhancement.Stainless steel storage tank volume factor: the greater the volume, the thickness of the stainless steel tank is more thick than stainless steel tank is small in size.The thickness of the quantitative by actual total or give directions.
Floating roof tank is stainless steel skin deep on the floating roof by floating in the medium and formed by the vertical cylindrical tank wall.With floating roof tank reserves of medium or cuts and lift, the growth of floating roof outer ring sealing device, between the tank wall have been inner floating roof tank medium cover directly, reduce the volatilization of medium.Stainless steel storage tank temperature ingredients: high temperature usually choose metal material and the metal lining stainless steel storage tank temperature, the greater the task management with materials shall be heat resistance, the thickness of the stainless steel tank from room temperature to thick.Nonmetallic material plastic under temperature is smaller.Stainless steel tank sealing gasket selection principle is, the application is not high, but by education, is not suitable to change again.But for those who are demanding places, such as explosive, toxic and combustible gas and strong erosion of stainless steel storage tank of liquid transport facilities, reaction tank and pipeline system, etc., should be in accordance with the task, task, temperature, pressure of seal medium corrosive and woo to choose in the form of sealing surface.
Stainless steel tank pressure factors: the working pressure, the greater the planning of the thickness of stainless steel storage tanks.This metal stainless steel tank pressure can be larger.Non-metallic materials to accept smaller or atmospheric pressure.The thickness of the stainless steel tank is follow the difference, data volume, weight, pressure, total or experience through practice.Single disc floating roof, is composed of several several independent cabin annular pontoon, the inside of the ring is a single roof.Single plate at the bottom of the roof has a multichannel circular steel reinforcement.Its advantage is low cost, good culture.As usual, in room temperature low voltage, choose nonmetal soft gasket;Medium voltage high temperature, the combination of metal and nonmetal sealing gasket sealing gaskets or metal;When temperature and pressure have larger stubborn, choose resilient or self-tightening sealing gasket;Under the condition of low temperature, corrosive medium or vacuum, sealing gasket should be thought to have great obedience.Here need is accused of stainless steel tank flange for gaskets influence.The influence of the flange appearance precision stainless steel storage tanks Stainless steel tank flange skin deep thorough degree is a great influence on the sealing effect, particularly when taking a soft cushion in an instant, seal looks fine degree value is revealed that one of the primary causes.For example, turning the flange surface grain is spiral, application of metal pads instant, assume that coarse degree value is bigger, gasket is chocked up with means less grain formed by the spiral groove, under pressure impregnation, the medium will follow the groove revealed in this article.Soft sealing gasket on the flange surface is bright and clean level for low many, this is because it is easy to deformation, can be closed processing knife, to guard against leakage.Instead of soft gasket, flange face too satiny, since the interface leakage resistance is small.So, shim gap, the application of the stainless steel tank flange surface coarse degree nor repel. |