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A construction method for dismantling thin shell dome of gas tank

A construction method and gas cabinet technology, applied in the direction of adjustable capacity gas storage tanks, gas/liquid distribution and storage, mechanical equipment, etc., can solve problems affecting the health of operators, long preparation period, and high labor intensity. Achieve the effect of reasonable demolition construction technology, simple and applicable operation, and reduced labor intensity

Active Publication Date: 2020-07-28
MCC5 GROUP SHANGHAI CORPORATION LIMITED
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the original demolition method requires the use of large crawler cranes and a large number of measures and materials. The preparation period is long, which seriously restricts the construction progress, low efficiency, high labor intensity, and poor working environment, which seriously affects the health of operators; and the piston dome needs to be erected and removed. Supporting brackets, heavy workload, high construction costs, and insufficient safety guarantees
[0006] Therefore known gas tank top and piston are removed, there are above-mentioned inconveniences and problems

Method used

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  • A construction method for dismantling thin shell dome of gas tank
  • A construction method for dismantling thin shell dome of gas tank

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Experimental program
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Embodiment 1

[0038] see now figure 1 , figure 1 It is a schematic diagram of dismantling a gas cabinet according to an embodiment of the present invention.

[0039] The demolition construction process for the thin shell dome of the gas cabinet of the present invention comprises the removal of the piston and the top of the cabinet, comprising the following steps:

[0040] a. Medium isolation, replacement inside the cabinet

[0041] The piston descends to the bottom of the gas tank, and the piston annular box beam is placed on the piston support; the valve of the gas tank inlet and outlet pipes has been closed, the gas in the gas tank has been exhausted, and the replacement is qualified.

[0042] Use a wrench to open all the manholes above and below the piston, and install a blower outside the opened manhole to promote air convection to accelerate replacement; use oxygen, carbon monoxide and hydrogen sulfide gas detectors to detect that the concentration of carbon monoxide is less than 30m...

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Abstract

The invention discloses a dismounting construction method for a thin-shell dome of a gas chamber, and the dismounting construction method comprises piston dismounting. The dismounting construction method is characterized by comprising the following steps of: a, performing medium isolation and performing gas replacement in the gas chamber; b, clearing oil residues; c, arranging a steel wire rope lifeline; d, dismounting the dome from a top side symmetrically ring by ring; e, dismounting the chamber top of the gas chamber, and mounting the chamber top steel wire rope lifeline; f, dismounting a dome ventilator; and g, dismounting the thin-shell dome of the chamber top. The dismounting construction method for the thin-shell dome of the gas chamber has the advantages of being reasonable in dismounting construction process, simple and applicable in operation, improving efficiency, reducing labor intensity, greatly shortening the construction period, completely getting rid of using a large crawler crane and dismounting a piston central rack, and greatly reducing construction cost.

Description

technical field [0001] The invention relates to a construction method for dismantling supporting equipment in a metallurgical enterprise, in particular to a construction method for dismantling a thin shell dome of a gas tank. Background technique [0002] The gas cabinet is a steel container used to store gas and adjust the pressure of the gas pipeline network. Because of its safety, efficiency, environmental protection and cleanliness, it is widely used in iron and steel enterprises and coking plants. In the past 20 years, my country's iron and steel enterprises have flourished, and the number and reserves of gas cabinets have also increased year by year. Due to their life cycle, the development of new technologies and the environment of de-capacity, the obsolete gas cabinets will be gradually removed. Gas cabinets are divided into dry gas cabinets, wet gas cabinets and new gas cabinets. The wet gas cabinet is a simple cylindrical structure sealed with water; the dry gas ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17B1/24
Inventor 李正波汪杰张峰袁正清王二刚
Owner MCC5 GROUP SHANGHAI CORPORATION LIMITED
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