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Double-wall type glass fiber reinforced plastic smoke exhaust cylinder

A chimney and fiberglass technology, which is applied to vertical pipes, building components, building types, etc., can solve the problems of low strength utilization rate of fiberglass chimney and high engineering cost, so as to improve stability and overall carrying capacity and save engineering cost , The effect of saving barrel material

Pending Publication Date: 2021-07-23
上海必立结构设计事务所有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of low strength utilization rate and high engineering cost of ordinary FRP chimney

Method used

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  • Double-wall type glass fiber reinforced plastic smoke exhaust cylinder
  • Double-wall type glass fiber reinforced plastic smoke exhaust cylinder
  • Double-wall type glass fiber reinforced plastic smoke exhaust cylinder

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Embodiment Construction

[0027] In order to make the present invention more obvious and understandable, the preferred embodiments are described in detail as follows in conjunction with the accompanying drawings:

[0028] Such as Figure 1-10 As shown, the present invention provides a double-walled FRP smoke exhaust tube. The smoke exhaust tube is provided with a double wall. The double wall includes an inner wall 302 and an outer wall 301. A connecting web 303 is provided between the inner wall 302 and the outer wall 301; 302 , a cavity 1 304 is provided between the outer wall 301 and the connecting web 303 ; an annular stiffener 4 is provided on the outer peripheral cylinder body 3 of the double-walled outer wall 301 . The two ends of the exhaust pipe are provided with a connection structure, and the connection structure includes a socket connection or a flange bolt connection; or the smoke exhaust pipe is set as an integral structure without joints. A socket 1 and a socket 2 are respectively provid...

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Abstract

The invention relates to a double-wall type glass fiber reinforced plastic smoke exhaust cylinder, and belongs to the technical field of chimney design and construction. The double-wall type glass fiber reinforced plastic smoke exhaust cylinder is provided with a double-layer cylinder wall, the double-layer cylinder wall comprises an inner wall and an outer wall, and a connecting web plate is arranged between the inner wall and the outer wall; a cavity is formed among the inner wall, the outer wall and the connecting web plate; annular stiffening ribs are arranged on the periphery of the outer wall of the double-layer cylinder wall. The bending rigidity of the cylinder wall and the critical stress level of a cylinder body are increased through the double cylinder wall and the connecting web plates, the stability and the overall bearing capacity of the cylinder wall are improved, materials of the cylinder body are saved, and the heat preservation performance of the cylinder body is improved; due to the arrangement of rigid diaphragm stiffening ribs, the stiffening ribs have the comprehensive functions of stiffening, shell ring connection, shell ring hoisting, shake stopping and the like; a safe, reliable, economical and applicable chimney anti-corrosion technical scheme is provided for application of the glass fiber reinforced plastic smoke exhaust cylinder, the material strength margin of the cylinder wall of the glass fiber reinforced plastic chimney is reduced, the yield resistance of the cylinder wall of the glass fiber reinforced plastic chimney is improved, the material consumption is reduced, and the construction cost is saved.

Description

technical field [0001] The invention relates to a double-walled glass fiber reinforced plastic smoke exhaust pipe, which belongs to the technical field of chimney design and construction. Background technique [0002] FRP is a composite material made of fibers and resins. It has the advantages of light weight, corrosion resistance and strong designability. It is especially suitable for wet chimneys that discharge wet smoke, and is widely used in chimney anticorrosion projects. The formed FRP structure has the same tensile strength as ordinary steel, its bulk density is about 1 / 4 of that of steel, and its modulus of elasticity is about 1 / 10 of that of steel. Therefore, light bulk density and corrosion resistance are the advantages of FRP structure, while low elastic modulus is its disadvantage. As a cylindrical shell structure, the load-carrying capacity of the exhaust pipe is mainly controlled by the critical stress, that is, whether it is elastic-plastic or elastic bucklin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H12/28E04F17/02E04H12/02
CPCE04F17/02E04F17/023E04F17/026E04H12/02E04H12/28
Inventor 牛春良
Owner 上海必立结构设计事务所有限公司
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