D-shaped sleeve chimney
A chimney and sleeve technology, applied in the field of chimneys, can solve the problems of small outer diameter, low "utilization efficiency" coefficient, non-independent semicircular inner cylinder uneven temperature and internal force, etc., to achieve small diameter, high utilization efficiency "coefficient, Avoid the effect of internal force on uneven temperature
Inactive Publication Date: 2017-05-10
上海必立结构设计事务所有限公司
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Problems solved by technology
[0008] The technical problem to be solved by the present invention is to provide a "D"-shaped sleeve chimney with small outer diameter and high "utilization efficiency" coefficient, which solves the problem of low "utilization efficiency" coefficient and non-independent semicircle chimney of ordinary double inner tubes. The problem of uneven temperature and internal force in the inner cylinder
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[0023] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.
[0024] The present invention is a kind of " D " shape sleeve chimney, as image 3 As shown, it includes an outer cylinder 1 and two inner cylinders, the two inner cylinders are two independent "D"-shaped inner cylinders 4, and the size and specifications of the two "D"-shaped inner cylinders 4 are the same or similar. Two "D"-shaped inner cylinders 4 are symmetrically arranged in the outer cylinder 1 with a circular horizontal cross-section. The two "D"-shaped inner cylinders 4 are independent of each other, and their horizontal sections are approximately semicircular. Independent free expansion and contraction. The distance b between the two "D-shaped" inner cylinders 4 meets the requirements for support, installation, personnel passage and maintenance; the distance a between the "D-shaped" inner cylinder 4 and the outer cylinde...
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The invention discloses a D-shaped sleeve chimney comprising an outer cylinder and two inner cylinders. The D-shaped sleeve chimney is characterized in that the two inner cylinders are two independent D-shaped inner cylinders and symmetrically arranged in the outer cylinder with the horizontal cross section being round. The requirement of function separation of the inner-outer cylinder of a general double-inner-cylinder chimney is met, and the using requirements of various operation conditions of a power plant are not affected. Two independent D shapes of the D-shaped sleeve chimney form an inner cylinder horizontal section approximate to a 'round'. The two D-shaped inner cylinders are independent, so that two units served by the two inner cylinders can operate independently, large and nonuniform temperature internal force, produced at the time of independent operating of a single unit, of two non-independent semicircular inner cylinders is avoid, and meanwhile, the coefficient of 'utilization efficiency' of the chimney is increased by a large margin.
Description
technical field [0001] The invention relates to a "D"-shaped sleeve chimney, which belongs to the technical field of chimneys. Background technique [0002] At present, in the construction of power stations in our country, most of the two units share an outer tube chimney, and one unit corresponds to one smoke exhaust inner tube. In order to improve the design level, the two different types of loads or functions, which are directly bearing external loads such as wind and directly bearing the action of flue gas, are borne by different structures respectively, and meet the maintenance and repair requirements of different service periods. The reinforced concrete outer cylinder with a circular horizontal section bears wind load, earthquake, self-weight and horizontal displacement of the inner cylinder, and two inner cylinders with a circular horizontal section are specially used to discharge flue gas with high temperature and corrosion. In this way, the function separation of t...
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IPC IPC(8): E04H12/28
CPCE04H12/28
Inventor 牛春良李迎祁洪生
Owner 上海必立结构设计事务所有限公司