CN108150001A - Bottom is equipped with flue gas hole and the three pipe chimneys with external triangle casing - Google Patents

Abstract

Flue gas hole is equipped with the present invention relates to a kind of bottom and carries three pipe chimneys of external triangle casing, 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 cross section center of circle of three chimney monomers of the three pipes chimney forms equilateral triangle, there are equal gaps between each chimney monomer outer wall, the outer cover of the three pipes chimney body is equipped with the triangular prism shape sleeve that cross section is triangle, and three chimney monomers are inscribed within the inner wall of the sleeve, the bottom of the sleeve is equipped with personnel entry points, the outer wall of the chimney monomer is equipped with exhaust gases passes, the wall surface that the chimney monomer is located at sleeve inner is equipped with access hole.The present invention is in all directions uniform force, and rational in infrastructure, personnel entry points, exhaust gases passes and access hole are respectively arranged on wall surface and tangent line so that chimney entirety stress balance is not susceptible to stress concentration.

Description

Bottom is equipped with flue gas hole and the three pipe chimneys with external triangle casing

Technical field

The present invention relates to chimney structure design fields, are to be related to a kind of bottom equipped with flue gas hole and band specifically There are three pipe chimneys of external triangle casing.

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.

（I is the background technology for quoting existing patent above, please writes the new back of the body accordingly according to the reality of your case Two sections above can be deleted and write again by scape technology.）

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

Invention content

It is an object of the invention to adapt to real needs, a kind of bottom is designed equipped with flue gas hole and with external triangle set Three pipe chimneys of pipe.

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

A kind of bottom is equipped with flue gas hole and the three pipe chimneys with external triangle casing, 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, and the three of the three pipes chimney The cross section center of circle of a chimney monomer forms equilateral triangle, there are equal gap between each chimney monomer outer wall, described three The outer cover of pipe chimney body equipped with the triangular prism shape sleeve that cross section is triangle, and three chimney monomers be inscribed within it is described The inner wall of sleeve, the bottom of the sleeve are equipped with personnel entry points, and the outer wall of the chimney monomer is equipped with exhaust gases passes, the cigarette The wall surface that chimney monomer is located at sleeve inner is equipped with access hole.

The personnel entry points are located on three wall surfaces of sleeve and size, height all same and are respectively positioned on each wall surface bottom Center.

The exhaust gases passes be located at it is at the sleeve tangent line tangent with each chimney monomer and symmetrical about tangent line, and three A flue gas passage structure is identical, and height is identical.

The sleeve is set in the lower part of three pipe chimney bodies, and the height of the sleeve is the three pipes chimney whole height 40%-60%.

Circumscribed linking beam, i.e., adjacent two chimney lists are equipped with outside three chimney monomers of the three pipes chimney body Linking beam is equipped between body, the outer wall of linking beam two chimney monomers connected to it is circumscribed.

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

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；

5. personnel entry points, exhaust gases passes and access hole are respectively arranged on wall surface and tangent line so that chimney entirety stress balance, no Stress concentration easily occurs.

Description of the drawings

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

Fig. 2 is the cross-sectional structure schematic diagram of Fig. 1 bottoms.

In figure, 1 is three pipe chimney bodies, and 2 be sleeve, and 3 be personnel entry points, and 4 be exhaust gases passes, and 5 be access hole, and 6 is connect Binder.

Specific embodiment

Embodiment：Referring to Fig. 1-2.

Flue gas hole is equipped with the invention discloses a kind of bottom and carries three pipe chimneys of external triangle casing, 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 cross section centers of circle of three chimney monomers of the three pipes chimney forms equilateral triangle, and there are phases between each chimney monomer outer wall Deng gap, the outer cover of the three pipes chimney body 1 is equipped with the triangular prism shape sleeve 2 that cross section is triangle, and three cigarettes Chimney monomer is inscribed within the inner wall of the sleeve 2, and the bottom of the sleeve 2 is equipped with personnel entry points 3, the outer wall of the chimney monomer Exhaust gases passes 4 are equipped with, the wall surface that the chimney monomer is located inside sleeve 2 is equipped with access hole 5.

The personnel entry points 3 are located on three wall surfaces of sleeve 2 and size, height all same and are respectively positioned on each wall surface bottom The center in portion.

The exhaust gases passes be located at it is at the sleeve 2 tangent line tangent with each chimney monomer and symmetrical about tangent line, and Three flue gas passage structures are identical, and height is identical.

The sleeve 2 is set in the lower part of three pipe chimney bodies 1, and the height of the sleeve 2 is whole for the three pipes chimney The 40%-60% of height.

Circumscribed linking beam 6, i.e., adjacent two chimneys are equipped with outside three chimney monomers of the three pipes chimney body 1 Linking beam 6 is equipped between monomer, the outer wall of 6 connected to it two chimney monomers of linking beam is circumscribed.

The linking beam 6 is equally spaced to be respectively arranged at different height equipped with three layers or more.

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 (6)

1. a kind of bottom is equipped with flue gas hole and the three pipe chimneys with external triangle casing, 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 cross section centers of circle of three chimney monomers of chimney forms equilateral triangle, there are equal gap between each chimney monomer outer wall, The outer cover of the three pipes chimney body (1) is equipped with the triangular prism shape sleeve (2) that cross section is triangle, and three chimney monomers It is inscribed within the inner wall of the sleeve (2), it is characterised in that：The bottom of the sleeve (2) is equipped with personnel entry points (3), the cigarette The outer wall of chimney monomer is equipped with exhaust gases passes (4), and the chimney monomer is located at the internal wall surface of sleeve (2) and is equipped with access hole (5)。

2. bottom according to claim 1 is equipped with flue gas hole and the three pipe chimneys with external triangle casing, feature It is：The personnel entry points (3) are on three wall surfaces of sleeve (2) and size, height all same and are respectively positioned on each wall surface The center of bottom.

3. bottom according to claim 2 is equipped with flue gas hole and the three pipe chimneys with external triangle casing, feature It is：The exhaust gases passes be located at it is at the sleeve (2) tangent line tangent with each chimney monomer and symmetrical about tangent line, and three A flue gas passage structure is identical, and height is identical.

4. the bottom according to claim 2 or claim 3 is equipped with flue gas hole and three pipes with external triangle casing Chimney, it is characterised in that：The sleeve (2) is set in the lower part of three pipe chimney bodies (1), and the height of the sleeve (2) is institute State the 40%-60% of three pipe chimney whole heights.

5. bottom according to claim 4 is equipped with flue gas hole and the three pipe chimneys with external triangle casing, feature It is：Circumscribed linking beam (6), i.e., adjacent two cigarettes are equipped with outside three chimney monomers of the three pipes chimney body (1) Linking beam (6) is equipped between chimney monomer, the outer wall of linking beam (6) two chimney monomers connected to it is circumscribed.

6. bottom according to claim 5 is equipped with flue gas hole and the three pipe chimneys with external triangle casing, feature It is：The linking beam (6) is equally spaced to be respectively arranged at different height equipped with three layers or more.