A method for quick hoisting of suspended vertical containers

Abstract

The invention discloses a method for quickly lifting a suspension type vertical vessel and belongs to the field of equipment lifting. The method comprises the following steps: moving equipment in for unloading; hanging a lifting appliance system, wherein an anchor hanging part and a penetration part of an anchor lifter are mutually perpendicular to form a T shape, a sling comprises a connection sling, a belt sling and a main sling, the penetration part of the anchor lifter penetrates through the space between two rib plates of a suspension type support on the horizontal line to be connected with the connection sling, the belt sling is wound at the lower circumference of the top of the horizontal suspension type vertical vessel, two ends of the belt sling are connected with the connection sling and the main sling, the length of the belt sling is equal to the semi-perimeter of the top outer wall of the equipment, and the connection sling is positioned on the horizontal line; lifting the equipment, lifting the main sling, lifting up the head part of the vertical vessel by the belt sling to ensure that the vertical vessel slowly changes from the horizontal position to the vertical position so as to finish the lifting work of the equipment. According to the method, the defects of the traditional lifting method are overcome and the safe, rapid, convenient and economical lifting of the suspension type vertical vessel is realized.

Description

technical field [0001] The invention relates to the technical field of equipment hoisting, in particular to a method for quick hoisting of a suspended vertical container. Background technique [0002] The suspension support is a kind of chemical equipment container support, also known as the ear frame, which is widely used in vertical equipment. Its structure is simple, and it is welded by two rib plates and a foot plate. Some models are equipped with backing plates. , The foot plate rests on the foundation of the floor or steel beams, and there are bolt holes on the foot plate to fix the equipment with bolts. Generally, four suspension supports are evenly distributed around the equipment, and the equipment is suspended after installation. For example, the rectification unit of the polysilicon plant is equipped with a reboiler in front of the nine towers, which belongs to this type. This type of equipment is generally a double-tube-sheet heat exchanger structure, which is sm...

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Problems solved by technology

Traditionally, the steel wire rope winding and binding method is mostly used for lifting, that is, multiple bundles of steel wire ropes are used to bind the cylinder around the waist, and wooden rafts are placed between the steel wire ropes and the cylinder, or the equipment flange and equipment lugs on the upper part of the vertical heat exchanger are used. The method of bundling steel wire ropes, this kind of bundling method is difficult to operate, cumbersome to operate, easy to crush or scratch the equipment, and cause great damage to the steel wire ropes; the offset of the bundled steel wire ropes during the lifting process is different, and the verticality of the equipment is poor when it is in an upright state. It is not conducive to the subsequent piercing work of the equipment; and after the equipment is in place, the subsequent removal of the bundled wire rope is carried out at high altitude, which is difficult and dangerous

Or use the nozzle flange on the top of the equipment to match the thickened blind plate and weld the plate-type lifting lug to form a lifting cover for lifting. This method is simple and feasible, but the production of the lifting cover is cumbersome. The size is different and cannot be used universally; and the specification of the top flange of some equipment is too small to meet the lifting strength requirements, or some equipment has no top flange at all

[0004] After searching, it was pointed out in the article "Setting of Mounting Lugs for Vertical Heat Exchanger" (Wang Hong) published in "Chemical Equipment and Pipeline" Volume 50, Issue 4 in August 2013 that, compared to the wire rope winding and binding method, , by setting lifting lugs to carry out hoisting and hoisting, it can not only ensure the safety of lifting, but also ensure the quality of equipment installation and shorten the installation period. The selection is affected by many factors such as equipment model, specification, wall thickness, suspension support position, etc. It is not easy to choose which lifting lug to weld, and it is generally not allowed to weld the equipment body after the pressure vessel is formed on site. Therefore, whether it is hoisting by wire rope winding and binding method, or the method of making and using lifting cover, it is impossible to conveniently and quickly lift such vertical containers.

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