CN102677943A - Mounting structure for three-tube tube-in-tube chimney - Google Patents
Mounting structure for three-tube tube-in-tube chimney Download PDFInfo
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- CN102677943A CN102677943A CN2012101804773A CN201210180477A CN102677943A CN 102677943 A CN102677943 A CN 102677943A CN 2012101804773 A CN2012101804773 A CN 2012101804773A CN 201210180477 A CN201210180477 A CN 201210180477A CN 102677943 A CN102677943 A CN 102677943A
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Abstract
The invention discloses a mounting structure for a chimney, particularly a mounting structure for a three-tube tube-in-tube chimney used in a large-scale power plant. The invention aims to solve the technical problem about providing a chimney structure having a bearing platform which increases the support point number for inner tubes of the three-tube tube-in-tube chimney and reduces the inner tube stress concentration. The structure includes an outer tube, three inner tubes evenly distributed inside the outer tube, and three main beams evenly distributed and mounted inside the outer tube, wherein the three main beams are connected mutually to form the bearing platform, each inner tube is mounted on the outer tube through the bearing platform, a supporting frame unit is arranged between a first main beam and a second main beam in any two adjacent main beams, the inside of the supporting frame unit forms hexagonal spaces matched with the external diameters of the inner tubes, and the inner tubes are connected with each beam of the hexagonal spaces of the supporting frame unit. For the improvement on the structure, the hexagonal spaces formed inside the supporting frame unit are regular hexagonal spaces.
Description
Technical field
The present invention relates to a kind of mounting structure of chimney, especially be suitable for the mounting structure of three pipe box cartridge type chimneys of large power plant use.
Background technology
In the chimney of electric plant design, three pipe box cartridge type chimneys are by extensively utilization at home.The inner core material of the telescopic chimney of low temperature adopts titanium-steel composite board mostly, and the titanium-steel composite board material has the advantage that intensity is good and anticorrosion is good, and traditional inner core bearing platform adopts as depicted in figs. 1 and 2; Three girders connect and are triangularly arranged, and three secondary beams are set between three girders again, and adjacent two girders and a secondary beam form the bearing support group; As by this structure arranging method, single glass fiber reinforced plastic inner tube installation and has only three supporting-point load-bearing in bearing support group independently; Load on every girder is concentrated; Big according to intensity, main beam section stable and that deformation requirements is designed, single-point internal force is more concentrated, and the internal stress of inner core is produced unfavorable factor.After girder connected simultaneously, very near at two girders and steel concrete urceolus junction, the local stress that the urceolus barrel is produced was bigger.Every girder is the common tangent of two inner cores; If the spacing between the inner core is too small; Three secondary beams between three girders can't be provided with; So must strengthen the center to center distance between inner core, the increase of inner core center to center distance will strengthen the outlet diameter of steel concrete urceolus accordingly, therefore the engineering quantity of urceolus also increases.Because the span of girder is bigger, the construction and the lifting of girder are made troubles in addition.
Because the titanium-steel composite board price is higher, the cost cost constantly increases, and how to select for use antiseptic property good, and the more economical material of cost plays the crux effect to reducing construction costs.Glass fiber reinforced plastic has anti-corrosive properties and economy preferably; It is preferred materials as the telescopic chimney internal cylinder of power plant's low temperature; But the mechanical property of glass-reinforced plastic material and common metal material is different; Have characteristics such as low and three direction mechanical properties of the glass fiber reinforced plastic opposite sex of intensity high elastic modulus, because sleeve chimney reinforced concrete urceolus produces distortion under sunshine, wind and earthquake operating mode, according to the principle of inner/outer tube compatibility of deformation; The distortion of urceolus can cause that glass fiber reinforced plastic inner core stress increases; Therefore adopt original three-point support connection can not satisfy the safety requirements of design, must in design, consider the Rational structure layout of bearing platform, increase the supporting-point of inner core on platform and reach the potential safety hazard that reduces to come owing to the inner core extending stress band.
Summary of the invention
Technical problem to be solved by this invention provides a kind of three pipe box cartridge type chimney internal cylinder supporting-point quantity of increasing that have, and reduces the chimney of the concentrated bearing platform of inner core stress.
The present invention solves the three pipe box cartridge type chimney mounting structures that its technical problem adopts; Comprise urceolus, be distributed in three inner inner cores of urceolus, be uniformly distributed with three girders that are installed in urceolus inside; Three girders are interconnected to form bearing platform; Each inner core is installed on the urceolus through bearing platform, the bearing support group is set between in two arbitrarily adjacent girders; Described each bearing support group is connected to form by first girder, first crossbeam, first inner beam, interior cant beam, second crossbeam, second inner beam; And the inside of bearing support group forms and the adaptive hexagon space of inner core external diameter; One end of described first crossbeam is connected with first girder, and the other end is connected with the inwall of urceolus; One end of described second crossbeam is connected with second girder, and the other end is connected with the inwall of urceolus; An end of cant beam is connected with second crossbeam in described, and an end of described first inner beam is connected with first crossbeam, and interior cant beam is connected with first inner beam; The other end of at least one in interior cant beam and first inner beam be connected with the inwall of urceolus; One end of described second inner beam is connected with second crossbeam, and the other end is connected with first girder; Described inner core is connected with the beam on each limit, bearing support group hexagon space.
As improvement of the present invention, the hexagon space that the inside of bearing support group forms is the regular hexagon space.
On described inner core, support flange is installed, and is provided with six supporting-points that are uniformly distributed with at support flange, support flange is connected with the beam on each limit, bearing support group hexagon space through supporting-point.
System rolling steelframe is installed below described bearing support group hexagon space, and the inside of above-mentioned system rolling steelframe forms the hexagon space identical with the bearing support group, and inner tube installation is in the hexagon space of the inside of system rolling steelframe.
Each limit in the hexagon space, inside of described system rolling steelframe is connected with each limit in the hexagon space of bearing support group, between the outer wall of each limit in the hexagon space, inside of above-mentioned system rolling steelframe and inner core, is provided with to make to shake point.
Described system rolling point is for being installed in the system rolling cushion block between inner core and the system rolling steelframe.
Inner core connects through expansion joint between each section of inner core axially adopting the segmentation support pattern.
Described expansion joint is arranged in the system rolling steelframe.
Interconnect between described three girders, and in urceolus, be formed centrally equilateral triangle.
Adopt three pipe box cartridge type chimney mounting structures of the present invention, lifting is convenient, and compact conformation can effectively reduce construction cost.
Description of drawings
Fig. 1 is that existing three pipe box cartridge type chimney facades are arranged sketch map.
Fig. 2 is the bearing platform floor map among Fig. 1.
Fig. 3 is that three pipe box cartridge type chimney facades of the present invention are arranged sketch map.
Fig. 4 is the bearing platform floor map of A-A section among Fig. 3.
Fig. 5 is the supporting-point mounting arrangements sketch map on the support platform.
Fig. 6 is the system rolling steelframe floor map of B-B section among Fig. 3.
Fig. 7 is the system rolling structural representation in the system rolling steelframe.
Mark among the figure: 1-urceolus; 2-bearing support group, 21-first crossbeam, cant beam in 22-second crossbeam, 23-, 24-inner beam; The 3-girder, 31-first girder, 32-second girder, 33-the 3rd girder; The 4-inner core; The 5-supporting-point, the 51-support flange; The 6-secondary beam; 7-system rolling steelframe; 8-system rolling point, 81-system rolling cushion block; The 8-expansion joint, the 10-bearing platform; 20-system rolling platform.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is elaborated.
Three pipe box cartridge type chimney mounting structures as shown in Figure 3 comprise urceolus 1, are distributed in three inner inner cores 4 of urceolus 1, and each inner core 4 is fixed on the urceolus 1 through being installed in urceolus 1 inner bearing platform 10.Three girders 3 that are uniformly distributed with on the cross section of bearing platform 10 by the inside that is installed in urceolus 1 are interconnected to form.Between the two any adjacent girders 3 on the bearing platform 10, bearing support group 2 is set; As shown in Figure 4; At first girder 31 and second girder 32, between second girder 32 and the 3rd girder 33, between first girder 31 and the 3rd girder 33, be provided with three bearing support groups 2 altogether.
As shown in Figure 4; Bearing support group 2 with between first girder 31 and second girder 32 is an example; It is made up of first girder 31, first crossbeam 21, first inner beam 24, interior cant beam 23, second crossbeam 22, second inner beam 25; And interconnect successively; And form and the adaptive hexagon space of inner core 4 external diameters in the inside of bearing support group 2, the beam connection on inner core 4 and each limit, bearing support group 2 hexagon space guarantees that inner core 4 can be installed in the inner hexagon space of bearing support group 2 and keeps suitable assemblage gap.Two girders in three bearing support groups can be thought to be made up of first girder 31 and second girder 32.
What the connected mode between each beam in the hexagon space of formation bearing support group 2 inside adopted is: an end of first crossbeam 21 is connected with first girder 31, and the other end is connected with the inwall of urceolus 1; One end of second crossbeam 22 is connected with second girder 32, and the other end is connected with the inwall of urceolus 1; One end of interior cant beam 23 is connected with second crossbeam 22, and the other end is connected with the inwall of urceolus 1; One end of first inner beam 24 is connected with first crossbeam 21, and the other end is connected with interior cant beam 23; One end of second inner beam 25 is connected with second crossbeam 22, and the other end is connected with first girder 31.On above-mentioned connected mode basis; Also can do to change other corresponding connections, as long as can satisfy integral intensity and construction requirement, in second girder 32 and the bearing platform between the 3rd girder 33 in accompanying drawing 4; One end of interior cant beam 23 is connected with second crossbeam 22; The other end first inner beam 24 connects, and an end of first inner beam 24 is connected with first crossbeam 21, and the other end is connected with the inwall of urceolus 1; The other end of at least one promptly in cant beam 23 and first inner beam 24 is connected with the inwall with urceolus 1; Just can reach the requirement of strength of bearing platform 10; Certainly as with interior cant beam 23, first inner beam 24 and second inner beam 25 one section, all be connected with the inwall of urceolus 1; More can increase the intensity of bearing platform, but will increase engineering cost and construction working amount simultaneously.
The present invention introduces unconventional usefulness on the layout of girder three girders are the design concept of bearing each other; Adopt high-strength bolt to be connected between girder and girder; After confirming, girder should consider as far as possible that increasing secondary beam arranges the supporting-point that solves inner core; According to the diameter of urceolus 1 and inner core 4, under the situation of the operating space of when guaranteeing the center to center distance between each inner core 4 and considering that high-strength bolt is installed, using, in accompanying drawing 4; Interconnect the back between three girders 3 and in urceolus 1, be formed centrally equilateral triangle, connection so each other is more firm.Therefore can be compact on the pitch arrangement between three inner cores, thus the outlet diameter of urceolus is less, the corresponding minimizing of engineering quantity.The construction hoisting aspect also brings convenience when platform lifts owing to girder length reduces.
Adopt above-mentioned bearing platform structure; Except that three girders are the main supporting member; Each bearing support group also is provided with the beam of other 4 load-bearing, and the supporting-point that is connected of each bearing support group and urceolus is increased to five from original two, has improved the stress and the stressed distribution of outer tube inner wall of bearing platform; Overcome the urceolus barrel and lacked the bigger problem of local stress that is produced owing to connect supporting-point originally, thereby disperseed of the influence of inner core supporting-point place stress concentrations inner core.Simultaneously because each bearing support group is designed to the hexagon space, existing three supporting-points are increased to six, the inner core of processing for one type of material of glass fiber reinforced plastic especially, is fixed and result of use obviously improves its connection.
If inner tube installation is in the bearing support group; Six tie points that the position is set is inhomogeneous; To on inner core, cause the problem that stress distribution is uneven and stress is concentrated; Therefore the hexagon spatial design that the inside of bearing support group 2 is formed be installed as the regular hexagon space, six tie points just can be evenly distributed on the circumference of inner core.
In the inner tube installation of prior art; Because the set-up mode of three girders arranges that the strong point of inner core is less relatively because three girders of bearing platform adopt to connect; As make the rolling steelframe and will under heavy bearing platform, hang; The intercolumniation that can cause making the rolling steelframe supports and the steel inner cylinder collision, so traditional way is to separate bearing platform and system rolling platform, the structural arrangement form and the bearing platform of system rolling platform are similar basically.With shown in the accompanying drawing 6, what adopt in the present invention is system rolling steelframe 7 like accompanying drawing 3.System rolling steelframe 7 is installed below bearing support group 2 hexagon spaces, and the inside of above-mentioned system rolling steelframe 7 also forms the hexagon space identical with bearing support group 2, and inner core 4 is installed in the hexagon space of inside of system rolling steelframe 7.Each limit in the hexagon space, inside of system rolling steelframe 7 is connected with each limit in the hexagon space of bearing support group 2, shakes 8 in each limit and the system of being provided with in the hexagon space, inside of above-mentioned system rolling steelframe 7.Shown in accompanying drawing 7, be a kind of specific embodiment of system rolling steelframe of the present invention, system rolling point 8 is for being installed in the system rolling cushion block 81 between inner core 4 and the system rolling steelframe 7.Adopt this underslung system rolling steelframe,, practice thrift steel, reduce cost than existing simplicity of design, easy for installation, and when inner core takes place slightly to rock, can not cause damage to inner core, safety is with reliable more.
Claims (9)
1. three pipe box cartridge type chimney mounting structures; Comprise urceolus, be distributed in three inner inner cores of urceolus, be uniformly distributed with three girders that are installed in urceolus inside, three girders are interconnected to form bearing platform, and each inner core is installed on the urceolus through bearing platform; It is characterized in that
Between adjacent arbitrarily two girders (3), bearing support group (2) is set;
Described each bearing support group (2) is connected to form by first girder (31), first crossbeam (21), first inner beam (24), interior cant beam (23), second crossbeam (22), second inner beam (25); And the inside of bearing support group (2) forms and the adaptive hexagon space of inner core (4) external diameter;
One end of described first crossbeam (21) is connected with first girder (31), and the other end is connected with the inwall of urceolus (1);
One end of described second crossbeam (22) is connected with second girder (32), and the other end is connected with the inwall of urceolus (1);
An end of cant beam (23) is connected with second crossbeam (22) in described, and an end of described first inner beam (24) is connected with first crossbeam (21), and interior cant beam (23) is connected with first inner beam (24);
The other end of at least one in interior cant beam (23) and first inner beam (24) is connected with the inwall with urceolus (1);
One end of described second inner beam (25) is connected with second crossbeam (22), and the other end is connected with first girder (31);
Described inner core (4) is connected with the beam on each limit, bearing support group (2) hexagon space.
2. three pipe box cartridge type chimney mounting structures as claimed in claim 1 is characterized in that, the hexagon space that the inside of bearing support group (2) forms is the regular hexagon space.
3. three pipe box cartridge type chimney mounting structures as claimed in claim 2; It is characterized in that; Support flange (51) is installed on described inner core (4); And being provided with six supporting-points (5) that are uniformly distributed with at support flange (51), support flange (51) is connected with the beam on each limit, bearing support group (2) hexagon space through supporting-point (5).
4. three pipe box cartridge type chimney mounting structures as claimed in claim 1; It is characterized in that; System rolling steelframe (7) is installed in below, described bearing support group (2) hexagon space; The inside of above-mentioned system rolling steelframe (7) forms the hexagon space identical with bearing support group (2), and inner core (4) is installed in the hexagon space of the inside of making rolling steelframe (7).
5. three pipe box cartridge type chimney mounting structures as claimed in claim 4; It is characterized in that; Each limit in the hexagon space, inside of described system rolling steelframe (7) is connected with each limit in the hexagon space of bearing support group (2), between the outer wall of each limit in the hexagon space, inside of above-mentioned system rolling steelframe (7) and inner core (4), is provided with to make to shake point (8).
6. three pipe box cartridge type chimney mounting structures as claimed in claim 5 is characterized in that, described system rolling point (8) is for being installed in the system rolling cushion block (81) between inner core (4) and the system rolling steelframe (7).
7. three pipe box cartridge type chimney mounting structures as claimed in claim 1 is characterized in that, inner core (4) connects through expansion joint (9) between each section of inner core axially adopting the segmentation support pattern.
8. three pipe box cartridge type chimney mounting structures as claimed in claim 7 is characterized in that, described expansion joint (9) is arranged in the system rolling steelframe (7).
9. three pipe box cartridge type chimney mounting structures as claimed in claim 1 is characterized in that, interconnect between described three girders (3), and in urceolus (1), are formed centrally equilateral triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180477.3A CN102677943B (en) | 2012-06-04 | 2012-06-04 | Mounting structure for three-tube tube-in-tube chimney |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210180477.3A CN102677943B (en) | 2012-06-04 | 2012-06-04 | Mounting structure for three-tube tube-in-tube chimney |
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| Publication Number | Publication Date |
|---|---|
| CN102677943A true CN102677943A (en) | 2012-09-19 |
| CN102677943B CN102677943B (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210180477.3A Active CN102677943B (en) | 2012-06-04 | 2012-06-04 | Mounting structure for three-tube tube-in-tube chimney |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740631A (en) * | 2017-10-30 | 2018-02-27 | 四川电力设计咨询有限责任公司 | The bearing platform structure of three pipe sleeve-type chimneys |
| CN107795184A (en) * | 2017-10-30 | 2018-03-13 | 四川电力设计咨询有限责任公司 | The truss bearing platform structure of three pipe sleeve-type chimneys |
| CN108204164A (en) * | 2018-01-22 | 2018-06-26 | 南昌大学 | The three pipe chimneys with external triangular shaped sleeve equipped with circumscribed linking beam |
| CN108331428A (en) * | 2018-03-21 | 2018-07-27 | 苏州泰高烟囱科技有限公司 | A kind of multicomputer sleeve chimney |
| CN114482679A (en) * | 2022-01-17 | 2022-05-13 | 中国能源建设集团广东省电力设计研究院有限公司 | Reinforced concrete chimney with self-supporting inner cylinder and construction method thereof |
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| GB1460739A (en) * | 1973-05-11 | 1977-01-06 | Energy Fabrications Ltd | Means for restraining oscillation in a chimney |
| SU669042A1 (en) * | 1977-09-13 | 1979-06-25 | Zubarev Pavel D | Chimney stack |
| JP2006219963A (en) * | 2005-02-14 | 2006-08-24 | Meiji Univ | Damping device for chimney stack |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740631A (en) * | 2017-10-30 | 2018-02-27 | 四川电力设计咨询有限责任公司 | The bearing platform structure of three pipe sleeve-type chimneys |
| CN107795184A (en) * | 2017-10-30 | 2018-03-13 | 四川电力设计咨询有限责任公司 | The truss bearing platform structure of three pipe sleeve-type chimneys |
| CN108204164A (en) * | 2018-01-22 | 2018-06-26 | 南昌大学 | The three pipe chimneys with external triangular shaped sleeve equipped with circumscribed linking beam |
| CN108331428A (en) * | 2018-03-21 | 2018-07-27 | 苏州泰高烟囱科技有限公司 | A kind of multicomputer sleeve chimney |
| CN114482679A (en) * | 2022-01-17 | 2022-05-13 | 中国能源建设集团广东省电力设计研究院有限公司 | Reinforced concrete chimney with self-supporting inner cylinder and construction method thereof |
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| CN102677943B (en) | 2014-04-09 |
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