What is the difference in performance between the normal installation method and the reverse installation method when installing gas cylinders?

Comparison of normal construction and inverted construction methods: The normal construction method involves: laying a set of plates at the bottom of the outer tank, welding the circumferential wall plates of the outer tank, constructing support rings for the inner tank wall, laying edge plates at the bottom of the inner tank, welding the circumferential wall plates of the inner tank, alternately welding the wall plates of the inner and outer tanks until the top circumferential wall plates are in place (after installing the three sets of wall plates, temporary doors for the inner and outer tanks are installed), setting up a full-scale scaffolding structure, laying the roof plate of the inner tank, welding the pressure-bearing ring of the outer tank, welding the radial and circumferential beams of the outer tank roof, installing the roof plate of the outer tank, carrying out insulation work on the tank bottom, welding the middle plates of the inner tank bottom, installing accessories for the tank body, sealing the temporary doors of the inner and outer tanks, conducting a water filling test, performing insulation work on the tank walls and roof, and finally sealing the openings. The inverted construction process is as follows: welding the bottom plate of the outer tank; welding the two layers of wall plates at the top of the outer tank; welding the pressure ring of the outer tank; welding the radial and circumferential beams at the top of the outer tank; installing the top plate of the outer tank; installing the top of the inner tank along with its suspension system; sequentially welding the remaining wall plates of the outer tank in an inverted manner; opening the door of the outer tank; constructing the bottom of the inner tank; welding the wall plates around the top of the inner tank; sequentially welding the remaining wall plates of the inner tank in an inverted manner; opening the door of the inner tank; installing the accessories for the tank; closing the doors of both the inner and outer tanks; conducting a water filling test; constructing the tank walls and roof; and sealing the holes. Advantages of the vertical construction method: The wall construction is carried out alternately for the inner tank and the outer tank, resulting in a relatively large working area. Provided that resources are sufficient, this method helps to reduce the construction time. Since scaffolding is available inside the tank, outside the tank, and in the interlayers, any rework required due to non-destructive testing does not affect the installation of the next layer of wall panels. Disadvantages of the vertical construction method: Scaffolding must be set up inside the tank, outside the tank, and in the interlayers; moreover, the scaffolding is used for a long period of time. Cranes are needed during the assembly of the inner and outer roofs as well as the upper wall panels, which increases the construction costs. There is a lot of work done at heights, which reduces work efficiency. It also poses difficulties for quality control and safety management. Advantages of the inverted construction method: Both the inner and outer tanks are erected using hydraulic jacking, eliminating the need to build scaffolding. For the construction of the tank walls and roofs of both tanks, only cranes are required (for installing the roof of the outer tank). This results in a significant reduction in construction costs. With the exception of the installation of the outer tank roof, all installation and inspection tasks are carried out on the ground, which improves work efficiency and facilitates quality control and safety management. Disadvantages of the inverted construction method: The various stages of construction are interlinked. To shorten the construction period, it is necessary to speed up work, and parallel operations cannot be carried out. During the construction of the tank wall, the inside of the tank is already a closed space with poor ventilation. Through comparison, it can be seen that the inverted construction method not only results in low construction costs, but also eliminates the need for work at heights, aside from the construction of the tank top and accessories. This creates favorable conditions for safety and quality management, allows for a more scientific and rational organization of the construction process, and facilitates operator tasks. However, during the construction of the inner tank, it is important to ensure proper ventilation in the interlayer and within the tank itself. This post was last edited by bht11 on 2008-6-28 22:29]

Most use the inversion method, which is simple, easy, safe, and cost-effective

It depends on the size of the jar: shorter jars are used in the normal orientation, while taller jars are used in the inverted orientation