Assembly method of super-large-diameter, stiffening-rib-free and thin-wall hemispherical top seal cover

A technology with super large diameter and assembly method, which is applied in the direction of metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems of no stiffener and small head space, etc., to reduce construction cost, improve construction efficiency, ensure construction safety and construction quality effect

Active Publication Date: 2016-11-23
CHINA NAT CHEM ENG THIRD CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing fixed roof form has an arched bottom and a narrow top space, which cannot meet the characteristics of "large diameter", "no stiffener" and "thin wall" at the same time

Method used

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  • Assembly method of super-large-diameter, stiffening-rib-free and thin-wall hemispherical top seal cover
  • Assembly method of super-large-diameter, stiffening-rib-free and thin-wall hemispherical top seal cover
  • Assembly method of super-large-diameter, stiffening-rib-free and thin-wall hemispherical top seal cover

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Embodiment Construction

[0061] The core device of isocyanate production is located in a steel sealing cover. Since highly toxic intermediate products will be produced during the production process, in order to avoid the leakage of toxic and harmful substances, a steel sealing cover is set outside the device to isolate it from the outside world and form a protection. In order to maximize the utilization of the space in the sealed enclosure and ensure the structural strength and stability of the top cover, this embodiment adopts a hemispherical top.

[0062] like Figure 1-15 As shown, a super large-diameter non-stiffener thin-walled hemispherical sealing cover includes a hemispherical dome 3, a cylinder body 5, a wind-resistant ring 6, an embedded plate and a bottom plate, and the hemispherical dome 3 includes an equatorial zone 31, a temperate zone 32 and an upper pole 33 , the equatorial zone 31 is welded by a number of spherical shell plates 311, the temperate zone 32 is welded by a number of spher...

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PUM

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Abstract

The invention provides a super-large-diameter, stiffening-rib-free and thin-wall hemispherical top seal cover. The super-large-diameter, stiffening-rib-free and thin-wall hemispherical top seal cover comprises a hemispherical top and a cylinder, wherein the hemispherical top comprises an equatorial zone, a temperate zone and an upper pole. The hemispherical top seal cover is simple in structure, low in cost, safe and reliable. The invention further provides an assembly method of the super-large-diameter, stiffening-rib-free and thin-wall hemispherical top seal cover. The assembly method comprises the following steps: (1) assembling the hemispherical top on the ground; (2) mounting the cylinder; (3) mounting wind-resisting rings; (4) mounting and welding a large-sized insert plate; (5) mounting the hemispherical top and the cylinder, wherein assembly of the hemispherical top on the ground comprises the following steps: (a), mounting a ring foundation and a steel structure support; (b), mounting an inside scaffold of the hemispherical top and support ring plates; (c), mounting and welding the equatorial zone; (d), mounting and welding the temperate zone; (e) mounting and welding the upper pole. The assembly method has the advantages that the operation is simple, the construction cost is reduced, the construction efficiency is increased, and the construction safety and the construction quality are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of equipment installation, and in particular relates to an assembly method of a super-large-diameter non-stiffening-rib thin-walled hemispherical sealing cover. Background technique [0002] At most, the vertical equipment adopts various forms of heads (most of which use oval heads), some are processed as a whole, and some are assembled and welded by split petals, but no matter what the form is, the size is small. For storage tanks, the fixed roofs are mostly conical roofs, orange segment vaults and reticulated shell vaults. Among them, the reticulated shell vaults are suitable for large storage tanks, but they need a grid structure as a support and the upper part is covered. Skin with lap welds. The existing fixed roof form has an arched bottom and a narrow top space, which cannot meet the characteristics of "large diameter", "no stiffener" and "thin wall" at the same time. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/02
CPCB23K31/02
Inventor 罗明明汤本林王达韩承康顾书兵
Owner CHINA NAT CHEM ENG THIRD CONSTR
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