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Gas Tank Storage Tank Classification And Structure.
- May 31, 2017 -

 Gas Tank Gas tank classification and structure. Gas tank is designed to store gas for the equipment, while the stability of the system from the role of pressure, according to the different pressure can withstand the gas tank can be divided into high pressure gas tank, low pressure gas tank, often Pressure tank. Gas tank different points: carbon steel tank, low alloy steel tank, stainless steel gas tank. The gas tank (pressure vessel) is usually composed of parts and components such as cylinder, head, flange, takeover, sealing element and bearing. In addition, it is equipped with safety devices, meters and the completion of the role of different production processes.

  classification

  Gas Tank A gas tank is a device specifically designed to store gas. Gas cylinders are commonly used to store and store gas. According to the different pressure of the gas tank can be divided into, ultra-high pressure gas tank, high pressure gas tank, low pressure gas tank, medium pressure gas tank; According to the use of metal gas tank can be divided into different stainless steel tank , Carbon steel stainless steel gas tank, alloy material stainless steel gas tank

  structure

  A container structure for storing gas in a city for gas. The role of the container is seen in the tank, which is also used in petroleum, chemical and metallurgical industries. According to the different storage pressure is divided into two types of low pressure and high pressure, the former by the structure and wet and dry points.

  Wet gas tank

  The lower part of the sink, the upper part of a number of steel plate welded by the lifting of the sleeve tower tower. The tower section changes with the amount of gas

  Vertical tank

  Gas Tank Lift up and down. There is a water seal between the tower sections to ensure the connection and sealing between the tower sections. Tower section of the lifting method has a guide column and spiral rail type two. The column-type gas storage tank is provided with a guide pillar with a considerable rigidity formed by a guide post, a crossed rod and a ring beam. The guide wheel mounted on the upper end of the tower is slid up and down along the guide post (Fig. 1). Spiral rail type gas tank in the tower outside the wall with a 45 ° angle of the spiral guide rail, the tower at the top of the guide wheel can be rotated along the guide for movement and lift.

  Sink can be made of steel plate, can also be used prefabricated or prefabricated concrete construction. As the weight of water in the tank is large, when the construction on the poor foundation, in order to prevent the tank settlement is too large can be used pile foundation, or the tank designed to ring to reduce water. In addition, the sink can be built in the ground, which can reduce the amount of settlement can also reduce the total height of the tank.

  The main load of the gas tank is the internal gas pressure, the wind load and the seismic action. Wind pressure should be considered in wind load. The wind load factor of high pressure spherical tank is generally 0.30 ~ 0.35. The horizontal seismic action of the wet tank includes the seismic force generated by the tank and the weight of each tower, and the hydrodynamic pressure caused by the vibration of the water in the tank. The horizontal seismic action of the dry tank includes the seismic force generated by the weight of the cylinder and the weight of the piston. Calculate the snow load to consider the eccentric moment caused by the local accumulation of snow in the top of the tank.

  Gas Tank Under the action of various loads and internal pressure, the shell wall and the roof of the tank are analyzed by the momentless theory of the shell structure. Low-pressure gas tank wall and roof thickness is generally not determined by the strength, but by the structure and corrosion requirements. The guide column of the column-type gas storage tank is subjected to the wind force and the horizontal seismic force on the tower section transmitted by the guide wheel. The guide wheel pressure can be decomposed into various planes by the plane truss analysis method. The inner column, the upper and lower girders and the guide rails of the spiral rails contain the space frame and bear the horizontal force of the wind load and the seismic force from the guide wheel. The cylinder of the dry gas tank should check its local and overall stability under the wind load, horizontal seismic force and internal pressure. The spherical tank has a strong tensile strength under internal pressure, but its stability is poor under negative pressure. Therefore, it is necessary to specify the minimum working pressure to ensure that no negative pressure occurs when the temperature drops and the internal pressure decreases.

  Gas Tank In the production of low-pressure gas tank, the tank is divided into several parts in the processing plant prefabricated, and then the total installation site, which can reduce the site to install the weld. From the parts lofting, production, to the overall installation of all stages must be strictly checked to ensure the final overall accuracy. Install the dry tank tank, the first laying the bottom plate, in the bottom of the assembly of the piston, and in the piston above the top truss, laying roof. At the same time, the lower part of the tank and the column. And then to the piston below the blast to rise, the use of the piston as a construction platform to install the upper sections of the wall. Step up the piston, step by step to install the column and the wall, to be designed after the height of the tank top truss and the top of the column fixed, and then put down the piston, all installed to complete. Large volume of high pressure gas tank can be used to suppress the block shell, welded in the field. After welding, all welds are required for quality inspection.