Disassembling and assembling method for oversized connecting bolt of high pressure container

Abstract

The invention relates to a disassembling and assembling method for an oversized connecting bolt of a high pressure container. The method comprises the following steps: hanging one end of a hand pulling block to a stand column of an operating platform, and catching the tail part of a heavy impact wrench clamped on the oversized connecting bolt by a lower hook head of the hand pulling block; mounting the suspended hand pulling block on a suspension beam, and hooking up a hanging ring of a heavy suspended hammer by the lower hook head of the hand pulling block, wherein the suspending height of the heavy suspended hammer is consistent to that of the heavy impact wrench clamped on the oversized connecting bolt; and tensioning the hand pulling block by an operator while pushing the heavy suspended hammer by another operator, wherein the heavy suspended hammer impacts and strikes the heavy impact wrench; and when the nut of the oversized connecting bolt is loose, tensioning the hand pulling block continuously, and when the oversized connecting bolt rotates upward or downward, adjusting the height of the heavy suspended hammer by the suspended hand pulling block till the bolt is removed orfastened. The method is low in investment cost, economic, consumption-reducing and low in maintenance cost, and can be recycled repeatedly.

Description

technical field [0001] The patent of the present invention belongs to the disassembly method of the super large diameter connecting bolt on the head of a large high-pressure vessel. More specifically, it relates to a method of disassembling and assembling the super large connecting bolt of a high pressure vessel. This method is mainly used for the super large diameter of the pressure vessel head. Removal and installation of connecting bolts and super large diameter anchor bolts. Background technique [0002] With the progress of society, there are more high-pressure equipment and pressure vessels in chemical, fertilizer and petroleum projects, and the connecting bolts of the equipment are also relatively thick. It is difficult to fasten and disassemble large-diameter bolts, especially in long-term high-pressure applications. The rusted bolts on the equipment are more difficult to disassemble and repair. During the repair and disassembly, methods such as hydraulic wrench disa...

AI Technical Summary

Problems solved by technology

[0002] With the progress of society, there are more high-pressure equipment and pressure vessels in chemical, fertilizer and petroleum projects, and the connecting bolts of the equipment are also relatively thick. It is difficult to fasten and disassemble large-diameter bolts, especially in long-term high-pressure applications. The rusted bolts on the equipment are more difficult to disassemble and repair. During the repair and disassembly, methods such as hydraulic wrench disassembly, grinder, flame or hacksaw destructive cutting, and sledge hammer are usually used, but the hydraulic wrench often suppresses the oil pump. If it is broken, it is difficult to dismantle. Using a grinder and flame destructive cutting requires hot work. Some chemical media are strictly prohibited from using fire. Hot work is extremely dangerous. Using a hacksaw for destructive cutting is too inefficient and affects the construction period. Use a sledgehammer to blow the demolition impact force Insufficient and cannot be removed

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