Method for rapidly hoisting suspended type vertical vessel

Abstract

The invention discloses a method for rapidly hoisting a suspended type vertical vessel, and belongs to the field of equipment hoisting. The hoisting method comprises steps as follows: equipment enters a field and is unloaded; a lifting appliance system is suspended; the equipment is hoisted; the equipment is in place; and the equipment is aligned and fixed, and the lifting appliance is removed, wherein the lifting appliance system comprises slings and anchor lifts; each anchor lift comprises an anchor hanging part and a penetrating part which are mutually perpendicular to form a T shape; a ring clamping hole is formed in one end, far away from the anchor hanging part, of each penetrating part and used for being connected with the slings; the slings comprise connecting slings used for connecting the anchor lifts and main slings, a bottom carrying sling used for bearing head raising force of the suspended vertical vessel as well as main slings connected with the connecting slings and the bottom carrying sling, the length of the bottom carrying sling is equal to the half perimeter of the outer wall of the top of the suspended type vertical container, and the connecting slings are located above the horizontal line. The defect of a conventional hoisting method is overcome, and the suspended type vertical vessel is safely, rapidly, conveniently and economically hoisted.

Description

technical field [0001] The invention relates to the technical field of equipment hoisting, in particular to a method for quickly hoisting 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 sma...

AI Technical Summary

Problems solved by technology

Traditionally, the steel wire rope winding and binding method is mostly used for hoisting, 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 suspended vertical container are used. The method of bundling 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 wire ropes; the offset of the bundled wire ropes is different during the hoisting process, and the verticality of the equipment is poor when it is in an upright state. It is not conducive to the perforation of the equipment; and after the equipment is in place, the 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 hoisting. This method is simple and feasible, but the lifting cover is cumbersome to make. The size is different and cannot be used universally; and 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 for hoisting, it can not only ensure the safety of hoisting, but also ensure the quality of equipment installation and shorten the installation period. The choice 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 the pressure vessel is generally not allowed to weld the equipment body after it 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 hoist this type of suspended vertical container

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