CN103924822A - Double-elliptic conjoint chimney - Google Patents
Double-elliptic conjoint chimney Download PDFInfo
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- CN103924822A CN103924822A CN201410149918.2A CN201410149918A CN103924822A CN 103924822 A CN103924822 A CN 103924822A CN 201410149918 A CN201410149918 A CN 201410149918A CN 103924822 A CN103924822 A CN 103924822A
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Abstract
The invention discloses a double-elliptic conjoint chimney comprising two elliptic round-section reinforced concrete cylinders. The double-elliptic conjoint chimney is characterized in that the elliptic round-section reinforced concrete cylinders are arranged side by side along the elliptic short axis; long and short axes of the elliptic section gradually increase from top to bottom according to the same proportion; the elliptic round-section reinforced concrete cylinders are connected through at least one reinforced concrete connecting beam along the cylinders. The double-elliptic conjoint chimney has the advantages that a steel inner cylinder is omitted so that building cost of the chimney is lowered; the elliptic round-section reinforced concrete cylinders are connected in a whole through the reinforced concrete connecting beams along the short axis of the cylinders, and the application of the connecting beams decreases lateral displacement of the chimney structure; the section of the double-elliptic conjoint chimney gradually increases from top to bottom along the height-wise direction of the chimney, sectional rigidity of the double-elliptic conjoint chimney also gradually increases from top to bottom, and stress is reasonable; compared with the traditional tube-in-tube chimney with double steel inner cylinders in the same-level unit, the double-elliptic conjoint chimney has small floor area; by the use of the double-elliptic conjoint chimney which is continuously cast, the problem that a chimney connector of the steel inner cylinder expands is avoided.
Description
Technical field
The invention belongs to power plant chimney technical field, being specifically related to cylindrical shell section form is that ellipse, space enclosing structure cross section are circular bielliptic(al) disjunctor chimney.
Background technology
Along with improving constantly that country requires standard limit of smog release, the desulfurization processing of flue gas is all carried out in newly-built steam power station by mandatory requirement, in the newly-built chimney of employing wet desulfurizing process, multitube Steel Inner Core of Chimney becomes a kind of form generally using in power plant chimney.Multitube Steel Inner Core of Chimney can be divided into self-supporting and suspension type by the form of structure of chimney, and higher to the interface requirement of breeching in the design of self-supporting Steel Inner Core of Chimney, breeching temperature expansion can have a negative impact to steel inner cylinder; The design of the expansion joint of suspended steel inner barrel chimney is comparatively complicated, and the steel using amount of bearing platform is also larger.Consider the co-ordination of steel inner cylinder and steel concrete urceolus, multitube steel inner cylinder also will arrange system rolling device simultaneously, and as the horizontal restrain of steel inner cylinder, its design and construction is all comparatively loaded down with trivial details and complicated, and construction cost is also higher.
Modal in tradition multitube Steel Inner Core of Chimney is two steel inner cylinder sleeve chimneys, considering that under use function and economic benefit prerequisite, its steel inner cylinder is generally all comparatively elongated, the bending rigidity of itself is smaller, cannot independently bear the effect of the horizontal loading such as wind load and seismic load, therefore just need to increase a space enclosing structure in the outside of steel inner cylinder, its overall bending rigidity can be met design requirement.Be steel concrete urceolus as form common in steel inner cylinder space enclosing structure, also have and adopt steelwork tower truss as braced structures.But, no matter be concrete urceolus Steel Inner Core of Chimney, or tower-type chimney, steel inner cylinder in chimney one of the main member that is all absolutely necessary, because steel inner cylinder steel using amount is large, cost is very high, is therefore meeting under the prerequisite of safety, applicability and durability, if can design a kind of Novel double-tube formula chimney without steel inner cylinder, will there is great economic benefit.
Summary of the invention
The object of the invention is the weak point for above-mentioned prior art, meeting under the requirement of the reliability indexs such as safety of structure, applicability, durability, provide a kind of rational in infrastructure, good looking appearance, the obvious bielliptic(al) disjunctor of economic benefit chimney.
Technical scheme of the present invention is:
A kind of bielliptic(al) disjunctor chimney, comprise elliptic cross-section steel concrete cylindrical shell, it is characterized in that, two elliptic cross-section steel concrete cylindrical shells are arranged side by side along ellipse short shaft direction, the long and short shaft size of elliptic cross-section strengthens from top to bottom gradually by same ratio, and two elliptic cross-section steel concrete cylindrical shells connect by least one steel concrete linking beam along cylindrical shell direction.
In order to obtain better technique effect, the horizontal range between described two elliptic cross-section steel concrete cylindrical shell closest approaches equates; There is at least one steel concrete linking beam at described elliptic cross-section steel concrete cylindrical shell same level absolute altitude place; Between described two elliptic cross-section steel concrete cylindrical shells, connect in addition steel ladder; Steel ladder connects the tie point of two elliptic cross-section steel concrete cylindrical shell differing heights; Lightning protection earthing device is arranged at the top of bielliptic(al) disjunctor chimney; On the outer wall of bielliptic(al) disjunctor chimney, there is signal bridge.
Power plant of the present invention bielliptic(al) disjunctor chimney tool has the following advantages:
(1) bielliptic(al) disjunctor chimney has been cancelled steel inner cylinder, has greatly reduced the construction cost of whole chimney structure, contrasts traditional two steel inner cylinder sleeve chimneys, has great economic benefit.
(2) by the structure optimization type selecting to oval disjunctor chimney, along the short-axis direction of oval cylindrical shell, two oval steel concrete cylindrical shells are linked to be to an entirety with steel concrete linking beam, overall structure is more or less the same in the bending rigidity of all directions, stressed evenly in all directions, rational in infrastructure, the use of linking beam simultaneously also can reduce the lateral displacement of structure.
(3) sectional dimension of bielliptic(al) disjunctor chimney strengthens from top to bottom gradually along chimney height direction, and rigidity of section also progressively improves from top to bottom, and reasonable stress, meets mechanical model.
(4) known by mechanical analysis, bielliptic(al) disjunctor chimney can meet the force request under the effects such as deadweight, wind load, seismic load, sunshine.
Steel ladder between (5) two oval cylindrical shells, than the steel cat ladder safety and reliability of traditional multitube Steel Inner Core of Chimney, uses more convenient.
(6) the relative ad eundem unit of bielliptic(al) disjunctor chimney traditional double steel inner cylinder sleeve chimney, floor space is little.
(7) the oval disjunctor chimney of continuous placing has been avoided the problem that Steel Inner Core of Chimney interface expands.
Brief description of the drawings
Fig. 1 is embodiment of the present invention structural representation;
Fig. 2 is embodiment of the present invention left view;
Fig. 3 is embodiment of the present invention A-A sectional view;
Fig. 4 is embodiment of the present invention B-B sectional view;
In figure:
1-elliptic cross-section steel concrete cylindrical shell, 2-steel concrete linking beam, 3-steel ladder, 4-signal bridge, 5-door opening, 6-flue entrance, 7-lightning protection earthing device.
Detailed description of the invention
Further introduce concrete structure of the present invention below in conjunction with drawings and Examples.
A kind of bielliptic(al) disjunctor chimney, comprise elliptic cross-section steel concrete cylindrical shell 1, two elliptic cross-section steel concrete cylindrical shells 1 are arranged side by side along ellipse short shaft direction, the long and short shaft size of elliptic cross-section strengthens from top to bottom gradually by same ratio, horizontal range between two elliptic cross-section steel concrete cylindrical shell closest approaches is equal, and two elliptic cross-section steel concrete cylindrical shells 1 connect by least one steel concrete linking beam 2 along cylindrical shell direction; There is at least one steel concrete linking beam 2 at elliptic cross-section steel concrete cylindrical shell 1 same level absolute altitude place; Two 1 of elliptic cross-section steel concrete cylindrical shells connect steel ladder 3 in addition; Steel ladder 3 connects the tie point of two elliptic cross-section steel concrete cylindrical shell 1 differing heights, be the vertical transportation passage of elliptic cross-section steel concrete cylindrical shell 1, has also strengthened the bonding strength of 1 of two elliptic cross-section steel concrete cylindrical shell; Lightning protection earthing device 7 is arranged at the top of bielliptic(al) disjunctor chimney; On the outer wall of bielliptic(al) disjunctor chimney, have signal bridge 4, the bottom of elliptic cross-section steel concrete cylindrical shell 1 has door opening 5, is convenient to workman and enters work and maintenance in chimney; The bottom of elliptic cross-section steel concrete cylindrical shell 1 also has flue entrance 6.
Two elliptic cross-section steel concrete cylindrical shells 1 arranged side by side are uniform section and the member perpendicular to ground, major axis, the minor axis in elliptical cylinder cross section can be with reference to ad eundem unit tradition multitube Steel Inner Core of Chimney, the principle equal according to chimney breast area calculates, and cylindrical shell wall thickness also can be with reference to traditional chimney; Steel concrete linking beam 2 is the members that link that two elliptic cross-section steel concrete cylindrical shells 1 are linked to be to entirety, can be one or more in the linking beam quantity at same level absolute altitude place; Steel ladder 3 is the vertical transportation passage of elliptic cross-section steel concrete cylindrical shell 1, connects by the built-in fitting being reserved on cylinder lateral wall, and this has also increased linking between two cylindrical shells, has improved the globality of structure; In addition, according to the requirement of technique specialty, in chimney structure, also answer modelled signal platform 4, lightning protection earthing device 7, flue entrance 6 and door opening 5.
Claims (7)
1. a bielliptic(al) disjunctor chimney, comprise elliptic cross-section steel concrete cylindrical shell, it is characterized in that, two elliptic cross-section steel concrete cylindrical shells are arranged side by side along ellipse short shaft direction, the long and short shaft size of elliptic cross-section strengthens from top to bottom gradually by same ratio, and two elliptic cross-section steel concrete cylindrical shells connect by least one steel concrete linking beam along cylindrical shell direction.
2. bielliptic(al) disjunctor chimney as claimed in claim 1, is characterized in that, the horizontal range between described two elliptic cross-section steel concrete cylindrical shell closest approaches equates.
3. bielliptic(al) disjunctor chimney as claimed in claim 1 or 2, is characterized in that, there is at least one steel concrete linking beam at described elliptic cross-section steel concrete cylindrical shell same level absolute altitude place.
4. bielliptic(al) disjunctor chimney as claimed in claim 1 or 2, is characterized in that, between described two elliptic cross-section steel concrete cylindrical shells, connects in addition steel ladder.
5. bielliptic(al) disjunctor chimney as claimed in claim 4, is characterized in that, steel ladder connects the tie point of two elliptic cross-section steel concrete cylindrical shell differing heights.
6. bielliptic(al) disjunctor chimney as claimed in claim 1 or 2, is characterized in that, lightning protection earthing device is arranged at the top of bielliptic(al) disjunctor chimney.
7. bielliptic(al) disjunctor chimney as claimed in claim 1 or 2, is characterized in that, on the outer wall of bielliptic(al) disjunctor chimney, has signal bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149918.2A CN103924822A (en) | 2014-04-15 | 2014-04-15 | Double-elliptic conjoint chimney |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410149918.2A CN103924822A (en) | 2014-04-15 | 2014-04-15 | Double-elliptic conjoint chimney |
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| Publication Number | Publication Date |
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| CN103924822A true CN103924822A (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410149918.2A Pending CN103924822A (en) | 2014-04-15 | 2014-04-15 | Double-elliptic conjoint chimney |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962956A (en) * | 2020-08-07 | 2020-11-20 | 上海必立结构设计事务所有限公司 | Method for improving D-shaped inner cylinder chimney |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4519303A (en) * | 1983-03-24 | 1985-05-28 | Crown Union, Inc. | Chimney lining system including frame-supported membrane |
| JPH08303058A (en) * | 1995-05-10 | 1996-11-19 | Mitsubishi Heavy Ind Ltd | Double cylinder type vibration damping funnel |
| CN201050211Y (en) * | 2007-05-23 | 2008-04-23 | 中国电力工程顾问集团华东电力设计院 | Gradual change type chimney |
| CN201652388U (en) * | 2010-02-11 | 2010-11-24 | 湖南省电力勘测设计院 | Inner cylinder tiling chimney of reinforced concrete inner-outer cylinder |
| CN201862399U (en) * | 2010-09-14 | 2011-06-15 | 中北大学 | Regeneration device for methyl nitrite in production process of oxalic acid dimethyl ester |
| CN202324785U (en) * | 2011-11-24 | 2012-07-11 | 河北省电力勘测设计研究院 | Double-cylinder chimney |
| CN203867270U (en) * | 2014-04-15 | 2014-10-08 | 江西省电力设计院 | Double-oval conjoined chimney |
-
2014
- 2014-04-15 CN CN201410149918.2A patent/CN103924822A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4519303A (en) * | 1983-03-24 | 1985-05-28 | Crown Union, Inc. | Chimney lining system including frame-supported membrane |
| JPH08303058A (en) * | 1995-05-10 | 1996-11-19 | Mitsubishi Heavy Ind Ltd | Double cylinder type vibration damping funnel |
| CN201050211Y (en) * | 2007-05-23 | 2008-04-23 | 中国电力工程顾问集团华东电力设计院 | Gradual change type chimney |
| CN201652388U (en) * | 2010-02-11 | 2010-11-24 | 湖南省电力勘测设计院 | Inner cylinder tiling chimney of reinforced concrete inner-outer cylinder |
| CN201862399U (en) * | 2010-09-14 | 2011-06-15 | 中北大学 | Regeneration device for methyl nitrite in production process of oxalic acid dimethyl ester |
| CN202324785U (en) * | 2011-11-24 | 2012-07-11 | 河北省电力勘测设计研究院 | Double-cylinder chimney |
| CN203867270U (en) * | 2014-04-15 | 2014-10-08 | 江西省电力设计院 | Double-oval conjoined chimney |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962956A (en) * | 2020-08-07 | 2020-11-20 | 上海必立结构设计事务所有限公司 | Method for improving D-shaped inner cylinder chimney |
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Application publication date: 20140716 |