CN108204164A

CN108204164A - The three pipe chimneys with external triangular shaped sleeve equipped with circumscribed linking beam

Info

Publication number: CN108204164A
Application number: CN201810056900.6A
Authority: CN
Inventors: 赵腾飞; 兰志文; 黄模佳; 张雷; 杨青; 杨丽
Original assignee: Nanchang University
Current assignee: Nanchang University
Priority date: 2018-01-22
Filing date: 2018-01-22
Publication date: 2018-06-26

Abstract

The present invention relates to chimney structure design fields, specifically, it is to be related to a kind of three pipe chimneys with external triangular shaped sleeve equipped with circumscribed linking beam, including three pipe chimney bodies, the structure of three chimney monomers of three chimney monomers of the three pipes chimney body is identical, cross section is identical, the outer cover of the three pipes chimney body is equipped with the triangular prism shape sleeve that cross section is triangle, the sleeve is set in the lower part of three pipe chimney bodies, seamlessly transitting for rounded corner at each surface transition of the sleeve, circumscribed linking beam is equipped with outside three chimney monomers of the three pipes chimney body, linking beam is equipped between two i.e. adjacent chimney monomers, the outer wall of linking beam two chimney monomers connected to it is circumscribed.It is linked to be an entirety with the linking beam of outer cut type between three cylinders of the invention, overall structure is consistent in the bending stiffness of all directions, and in all directions uniform force, stress concentration effect is with respect to unobvious, and connection is advantageously.

Description

The three pipe chimneys with external triangular shaped sleeve equipped with circumscribed linking beam

Technical field

The present invention relates to chimney structure design fields, are to be related to a kind of band equipped with circumscribed linking beam specifically There are three pipe chimneys of external triangular shaped sleeve.

Background technology

With the continuous improvement that country requires standard limit of smog release, newly-built thermal power plant is all forced requirement and carries out cigarette The desulfurization process of gas, in the newly-built chimney using wet desulfurizing process, multitube Steel Inner Core of Chimney becomes in power plant chimney A kind of form generally used.Multitube Steel Inner Core of Chimney can be divided into self-supporting and suspension type by the structure type of chimney, from Higher to the interface requirement of horizontal flue in vertical Steel Inner Core of Chimney design, horizontal flue temperature expansion can generate not steel inner cylinder Profit influences；The design of the expansion joint of suspended steel inner barrel chimney is complex, and the steel using amount of bearing platform is also larger.It examines simultaneously Consider the co-ordination of steel inner cylinder and armored concrete outer barrel, multitube steel inner cylinder there is provision of system and shake device, as steel inner cylinder 's

Lateral confinement, design and construction is relatively complicated and complicated, and construction cost is also higher.

The most common are double steel inner cylinder sleeve chimneys in traditional multitube Steel Inner Core of Chimney, are considering to use function and economy Its steel inner cylinder is generally more elongated under the premise of benefit, and the bending stiffness of itself is smaller, can not independently undertake wind load with And the effect of the horizontal loadings such as earthquake load, therefore just need to increase a building enclosure in the outside of steel inner cylinder, make its entirety Bending stiffness disclosure satisfy that design requirement.It is armored concrete outer barrel as form common in steel inner cylinder building enclosure, Have using steelwork tower truss as support construction.But either concrete outer barrel Steel Inner Core of Chimney or tower-type cigarette Chimney, the steel inner cylinder in chimney is all one of essential main member, and since steel inner cylinder steel using amount is big, cost is very high, another Aspect, with the continuous improvement of power plant capacity of power unit, in traditional sleeve chimney armored concrete outer barrel and steel Cylinder diameter is also increasing, and on the one hand the increase of floor space increases construction cost, it is also possible to its peripheral equipment facility（Such as Dust catcher foundation）Certain collision conflict occurs, influence to a certain extent and constrains relevant technology arrangement.

Patent of invention 201420181041.0 discloses a kind of three pipe disjunctor chimneys, including circular cross-section reinforcing bar concrete tube Body and armored concrete linking beam, three circular cross-section reinforcing bar concrete barrels arrange along three vertex of equilateral triangle, every two It is connected between cylinder along short transverse every a distance with armored concrete linking beam.The invention overcomes biography to a certain extent The defects of disjunctor chimney of system technology, still, the chimney structure of the case, no matter from the overall performance of chimney, including anti-seismic performance, For resisting the various aspects such as the ability of load, all to be improved and raising.

Invention content

It is an object of the invention to adapt to real needs, design is a kind of to carry external triangle set equipped with circumscribed linking beam Three pipe chimneys of cylinder.

In order to achieve the object of the present invention, the technological means that uses of the present invention for：

A kind of three pipe chimneys with external triangular shaped sleeve equipped with circumscribed linking beam, including three pipe chimney bodies, described three The structure of three chimney monomers of three chimney monomers of pipe chimney body is identical, and cross section is identical, the three pipes chimney body Outer cover equipped with the triangular prism shape sleeve that cross section is triangle, the sleeve is set in the lower part of three pipe chimney bodies, institute Seamlessly transitting for rounded corner at each surface transition of sleeve is stated, is equipped with outside three chimney monomers of the three pipes chimney body Circumscribed linking beam is equipped with linking beam, linking beam two chimneys connected to it between that is, adjacent two chimney monomers The outer wall of monomer is circumscribed.

The linking beam is equally spaced to be respectively arranged at different height equipped with three layers or more.

Three chimney monomer outer walls of the three pipes chimney are circumscribed mutually.

The cross section centers of circle of three chimney monomers of the three pipes chimney forms equilateral triangle, each chimney monomer outer wall it Between there are equal gap, and between each chimney monomer be equipped with inner support beam.

The inner support beam is equipped with more than two layers, is respectively arranged at different height.

Beneficial effects of the present invention：

1. being linked to be an entirety with the linking beam of outer cut type between three cylinders, overall structure is in the bending stiffness one of all directions It causes, it is rational in infrastructure in all directions uniform force, while the use of inner support beam can also reduce the lateral displacement of structure；

2. the overall performance for increasing sleeve after funnel is more preferable, such as anti-seismic performance, resist load ability be obtained for it is very big It is promoted；

3. Shape Coefficient and wind pulse can all reduce；

4. by finite element analysis, linking beam is set to the circumscribed position of this case, while linking beam is set to each chimney Non- circumscribed position between the sleeve of monomer, multiple structural forms relatively learn that remaining type of attachment stress concentration effect is more Significantly, the linking beam mode of this case, stress concentration effect is with respect to unobvious, and connection is advantageously.

Description of the drawings

Fig. 1 is the external primary structure schematic diagram of the embodiment of the present invention one；

Fig. 2 is the cross-sectional structure schematic diagram on Fig. 1 tops；

Fig. 3 is the external primary structure schematic diagram of the embodiment of the present invention two；

Fig. 4 is the cross-sectional structure schematic diagram on Fig. 3 tops.

In figure, 1 is three pipe chimney bodies, and 2 be sleeve, and 3 be linking beam, and 4 be inner support beam.

Specific embodiment

Embodiment：Referring to Fig. 1-4.

The invention discloses a kind of three pipe chimneys with external triangular shaped sleeve equipped with circumscribed linking beam, including three pipes Chimney body 1, the structure of three chimney monomers of three chimney monomers of the three pipes chimney body 1 is identical, and cross section is identical, The outer cover of the three pipes chimney body 1 is set in three equipped with the triangular prism shape sleeve 2 that cross section is triangle, the sleeve 2 The lower part of pipe chimney body 1, seamlessly transitting for rounded corner, the three pipes chimney body 1 at each surface transition of the sleeve 2 Three chimney monomers outside be equipped with circumscribed linking beam 3, i.e., linking beam 3 is equipped between adjacent two chimney monomers, it is described The outer wall of 3 connected to it two chimney monomers of linking beam is circumscribed.

The linking beam 3 is equally spaced to be respectively arranged at different height equipped with three layers or more.

Fig. 1, the embodiment one Fig. 2 shows this case, in the present embodiment, three chimney monomer outer walls of the three pipes chimney It is circumscribed mutually.

Fig. 3, Fig. 4 show the embodiment two of this case, in the present embodiment, the horizontal stroke of three chimney monomers of the three pipes chimney The section center of circle forms equilateral triangle, there are equal gap between each chimney monomer outer wall, and is equipped between each chimney monomer Inner support beam 4.

The inner support beam 4 is equipped with more than two layers, is respectively arranged at different height.

By finite element analysis, linking beam is set to the circumscribed position of this case, while linking beam is set to each cigarette Non- circumscribed position between the sleeve of chimney monomer, multiple structural forms relatively learn, remaining type of attachment stress concentration effect compared with To be apparent, the linking beam mode of this case, stress concentration effect is with respect to unobvious, and connection is advantageously.

The foregoing is merely the embodiment of the present invention, are not intended to limit the scope of the invention, every to utilize this hair The equivalents that bright specification and accompanying drawing content are made directly or indirectly are used in relevant technical field, are similarly included in In the scope of patent protection of the present invention.

Claims

1. a kind of three pipe chimneys with external triangular shaped sleeve equipped with circumscribed linking beam, including three pipe chimney bodies (1), institute The structure for stating three chimney monomers of three chimney monomers of three pipe chimney bodies (1) is identical, and cross section is identical, the three pipes cigarette The outer cover of chimney ontology (1) is set in three pipe cigarettes equipped with the triangular prism shape sleeve (2) that cross section is triangle, the sleeve (2) The lower part of chimney ontology (1), seamlessly transitting for rounded corner at each surface transition of the sleeve (2), it is characterised in that：Described three Circumscribed linking beam (3) is equipped with outside three chimney monomers of pipe chimney body (1), i.e., is set between adjacent two chimney monomers There is linking beam (3), the outer wall of linking beam (3) two chimney monomers connected to it is circumscribed.

2. the three pipe chimneys with external triangular shaped sleeve according to claim 1 equipped with circumscribed linking beam, feature It is：The linking beam (3) is equally spaced to be respectively arranged at different height equipped with three layers or more.

3. three pipes with external triangular shaped sleeve equipped with circumscribed linking beam according to claim 1 or claim 2 Chimney, it is characterised in that：Three chimney monomer outer walls of the three pipes chimney are circumscribed mutually.

4. the three pipe chimneys with external triangular shaped sleeve according to claim 1 equipped with circumscribed linking beam, feature It is：The cross section centers of circle of three chimney monomers of the three pipes chimney forms equilateral triangle, between each chimney monomer outer wall There are equal gap, and inner support beam (4) is equipped between each chimney monomer.

5. the three pipe chimneys with external triangular shaped sleeve according to claim 3 equipped with circumscribed linking beam, feature It is：The inner support beam (4) is respectively arranged at different height equipped with more than two layers.