CN102677943B - 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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- CN102677943B CN102677943B CN201210180477.3A CN201210180477A CN102677943B CN 102677943 B CN102677943 B CN 102677943B CN 201210180477 A CN201210180477 A CN 201210180477A CN 102677943 B CN102677943 B CN 102677943B
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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, be especially suitable for the mounting structure of three pipe sleeve-type chimneys of large power plant use.
Background technology
In chimney of electric plant design, three pipe sleeve-type chimneys are widely used at home.The inner core material of low temperature sleeve-type chimney adopts titanium-steel composite board mostly, titanium-steel composite board material has advantages of that intensity is good and anticorrosion is good, traditional inner core bearing platform adopts as depicted in figs. 1 and 2, three girders connect and are triangularly arranged, three secondary beams are set between three girders again, adjacent two girders and a secondary beam form bearing support group, as pressed this structure arranging method, single glass reinforced plastic inner cylinder is arranged on independently in bearing support group, and only have three supporting-point load-bearing, Load concentration on every girder, according to intensity, the main beam section that stabilization and deformation requirement is designed is large, single-point internal force is more concentrated, the internal stress of inner core is produced to unfavorable factor.After girder connects simultaneously, very near at two girders and steel concrete urceolus junction, the local stress that urceolus barrel is produced is larger.Every girder is the common tangent of two inner cores, if the spacing between inner core is too small, three secondary beams between three girders cannot arrange, 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, and therefore the engineering quantity of urceolus also increases.Because the span of girder is larger, the construction of girder and lifting are made troubles in addition.
Because titanium-steel composite board price is higher, cost constantly increases, and how to select antiseptic property good, and the more economical material of cost plays crux effect to reducing construction costs.Glass fiber reinforced plastic has good anti-corrosive properties and economy, it is the preferred materials as power plant's low temperature sleeve-type chimney inner core, but the mechanical property of glass-reinforced plastic material and common metal material is different, there is the features such as low and three the direction mechanical property opposite sex of glass fiber reinforced plastic of intensity high elastic modulus, because sleeve chimney steel concrete urceolus is at sunshine, under wind and earthquake operating mode, produce distortion, according to the principle of inner/outer tube compatibility of deformation, the distortion of urceolus can cause that glass reinforced plastic inner cylinder stress increases, therefore adopt original three-point support to connect the safety requirements that can not meet design, must consider in design 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 due to inner core extending stress band.
Summary of the invention
Technical problem to be solved by this invention is to provide 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 sleeve-type chimney mounting structures that its technical problem adopts, comprise urceolus, be distributed in three inner cores of urceolus inside, uniform three girders that are arranged on urceolus inside, three girders are interconnected to form bearing platform, each inner core is arranged on urceolus by bearing platform, bearing support group is set between in two girders of arbitrary neighborhood; Each described bearing support group is connected to form by the first girder, first crossbeam, the first inner beam, interior cant beam, second cross beam, the second inner beam; And the inside of bearing support group forms the hexagon space with inner core external diameter adaptation; One end of described first crossbeam is connected with the first girder, and the other end is connected with the inwall of urceolus; One end of described second cross beam is connected with the second girder, and the other end is connected with the inwall of urceolus; One end of described interior cant beam is connected with second cross beam, and one end of the first described inner beam is connected with first crossbeam, and interior cant beam is connected with the first inner beam; Interior cant beam is connected with the inwall of urceolus with at least one the other end in the first inner beam; One end of the second described inner beam is connected with second cross beam, and the other end is connected with the 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 regular hexagon space.
On described inner core, support flange is installed, and is provided with six uniform supporting-points at support flange, support flange is connected with the beam on each limit, bearing support group hexagon space by supporting-point.
Below described bearing support group hexagon space, be provided with and make rolling steelframe, the inside of above-mentioned system rolling steelframe forms the hexagon space identical with bearing support group, and inner tube installation is in the hexagon space of the inside of system rolling steelframe.
Described system is shaken each limit in hexagon space, inside of steelframe and is connected with each limit in the hexagon space of bearing support group, in above-mentioned system, shakes and is provided with and makes rolling point between each limit in hexagon space, inside of steelframe and the outer wall of inner core.
The system rolling cushion block that described system rolling point shakes between steelframe for being arranged on inner core and system.
Inner core, axially adopting segmentation support pattern, connects by expansion joint between each section of inner core.
Described expansion joint is arranged in system rolling steelframe.
Between three described girders, interconnect, and be formed centrally equilateral triangle in urceolus.
Adopt three pipe sleeve-type chimney mounting structures of the present invention, lifting is convenient, and compact conformation, can effectively reduce construction cost.
Accompanying drawing explanation
Fig. 1 is that existing three pipe sleeve-type chimney facades are arranged schematic diagram.
Fig. 2 is the bearing platform floor map in Fig. 1.
Fig. 3 is that three pipe sleeve-type chimney facades of the present invention are arranged schematic diagram.
Fig. 4 is the bearing platform floor map of A-A section in Fig. 3.
Fig. 5 is the supporting-point mounting arrangements schematic diagram on support platform.
Fig. 6 is the system rolling steelframe floor map of B-B section in Fig. 3.
Fig. 7 is the system rolling structural representation that system is shaken in steelframe.
Mark in figure: 1-urceolus; 2-bearing support group, 21-first crossbeam, 22-second cross beam, cant beam in 23-, 24-the first inner beam; 3-girder, 31-the first girder, 32-the second girder, 33-the 3rd girder; 4-inner core; 5-supporting-point, 51-support flange; 6-secondary beam; 7-system rolling steelframe; 8-system rolling point, 81-system rolling cushion block; 9-expansion joint, 10-bearing platform; 20-system rolling platform.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
Three pipe sleeve-type chimney mounting structures as shown in Figure 3, comprise urceolus 1, are distributed in three inner cores 4 of urceolus 1 inside, and each inner core 4 is fixed on urceolus 1 by being arranged on the bearing platform 10 of urceolus 1 inside.Bearing platform 10 is interconnected to form by being arranged on three uniform girders 3 on the cross section of inside of urceolus 1.Between two girders 3 of the arbitrary neighborhood on bearing platform 10, bearing support group 2 is set, as shown in Figure 4, at the first girder 31 and the second girder 32, between the second girder 32 and the 3rd girder 33, between the first girder 31 and the 3rd girder 33, be provided with altogether three bearing support groups 2.
As shown in Figure 4, the bearing support group 2 of take between the first girder 31 and the second girder 32 is example, it is comprised of the first girder 31, first crossbeam 21, the first inner beam 24, interior cant beam 23, second cross beam 22, the second inner beam 25, and interconnect successively, and in the inside of bearing support group 2, form the hexagon space with inner core 4 external diameter adaptations, the beam connection on inner core 4 and bearing support group 2 each limits, hexagon space, guarantees that inner core 4 can be arranged in the hexagon space of bearing support group 2 inside and retain suitable assemblage gap.Two girders in three bearing support groups can be thought to be comprised of the first girder 31 and the second girder 32.
Connected mode between each beam in the hexagon space of formation bearing support group 2 inside adopts: one end of first crossbeam 21 is connected with the first girder 31, and the other end is connected with the inwall of urceolus 1; One end of second cross beam 22 is connected with the 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 cross beam 22, and the other end is connected with the inwall of urceolus 1; One end of the first inner beam 24 is connected with first crossbeam 21, and the other end is connected with interior cant beam 23; One end of the second inner beam 25 is connected with second cross beam 22, and the other end is connected with the first girder 31.On above-mentioned connected mode basis, also can do to change other corresponding connections, as long as can meet whole intensity and construction requirement, in the 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 cross beam 22, the other end the first inner beam 24 connects, and one end of the first inner beam 24 is connected with first crossbeam 21, and the other end is connected with the inwall of urceolus 1; In, cant beam 23 is connected with the inwall of urceolus 1 with at least one the other end in the first inner beam 24, just can reach the requirement of strength of bearing platform 10, certainly as one section of interior cant beam 23, the first inner beam 24 and the second inner beam 25 is all connected with the inwall of urceolus 1, more the intensity of bearing platform can be increased, but engineering cost and construction working amount will be increased simultaneously.
The present invention is set up three girders design concept of bearing each other of introducing unconventional use at the cloth of girder, between girder and girder, adopt high-strength bolt to be connected, girder should consider after determining that increasing secondary beam arranges the supporting-point that solves inner core as far as possible, according to the diameter of urceolus 1 and inner core 4, in the situation that the operating space that guarantees the center to center distance between each inner core 4 and consider to use when high-strength bolt is installed, in accompanying drawing 4, after interconnecting between three girders 3, in urceolus 1, be formed centrally equilateral triangle, connection so is each other more firm.Therefore can be compact in the pitch arrangement between three inner cores, thus the outlet diameter of urceolus is less, the corresponding minimizing of engineering quantity.Construction hoisting aspect, because girder length reduces, also brings convenience when platform lifts.
Adopt above-mentioned bearing platform structure, except three girders are main supporting member, each bearing support group is also 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, stress and the stressed distribution of outer tube inner wall of bearing platform have been improved, overcome urceolus barrel originally owing to connecing the few larger problem of local stress producing of supporting-point, thereby disperseed the impact of inner core supporting-point place stress concentrations on inner core.Because each bearing support group is designed to hexagon space, existing three supporting-points are increased to six simultaneously, the inner core of making for glass fiber reinforced plastic one class material especially, it connects, fixes and result of use obviously improves.
If inner tube installation is in bearing support group, the setting position of six tie points is inhomogeneous, stress distribution inequality and the concentrated problem of stress will be caused on inner core, therefore the hexagon spatial design inside of bearing support group 2 being formed and be installed as 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, set-up mode due to three girders, because three girders employing perforations of bearing platform are arranged, the strong point of inner core is relatively less, the steelframe that shakes as made will hang under heavy bearing platform, can cause intercolumniation support and the steel inner cylinder of system rolling steelframe to collide, so traditional way is that bearing platform and system rolling platform are separated, structural arrangement form and the bearing platform of making rolling platform are substantially similar.As shown in accompanying drawing 3 and accompanying drawing 6, what adopt in the present invention is system rolling steelframe 7.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 arranged in the hexagon space of the inside of making rolling steelframe 7.System is shaken each limit in hexagon space, inside of steelframe 7 and is connected with each limit in the hexagon space of bearing support group 2, above-mentioned system shake steelframe 7 hexagon space, inside each limit be provided with system rolling 8.As shown in Figure 7, be a kind of specific embodiment of system rolling steelframe of the present invention, system rolling point 8 is for being arranged on inner core 4 and making the system rolling cushion blocks 81 that shake between steelframe 7.Adopt this underslung system rolling steelframe, than existing simplicity of design, saving steel, reduces costs, easy for installation, and when inner core occurs slightly to rock, can not cause the damage to inner core, more safety and reliable.
Claims (10)
1. three manage sleeve-type chimney mounting structures, comprise urceolus, be distributed in three inner cores of urceolus inside, uniform three girders that are arranged on urceolus inside, three girders are interconnected to form bearing platform, and each inner core is arranged on urceolus by bearing platform, it is characterized in that
Between two girders (3) of arbitrary neighborhood, bearing support group (2) is set;
Each described bearing support group (2) is connected to form by the first girder (31), first crossbeam (21), the first inner beam (24), interior cant beam (23), second cross beam (22), the second inner beam (25); And the inside of bearing support group (2) forms the hexagon space with inner core (4) external diameter adaptation;
One end of described first crossbeam (21) is connected with the first girder (31), and the other end is connected with the inwall of urceolus (1);
One end of described second cross beam (22) is connected with the second girder (32), and the other end is connected with the inwall of urceolus (1);
One end of described interior cant beam (23) is connected with second cross beam (22), and one end of described the first inner beam (24) is connected with first crossbeam (21), and interior cant beam (23) is connected with the first inner beam (24);
Interior cant beam (23) is connected with the inwall of urceolus (1) with at least one the other end in the first inner beam (24);
One end of described the second inner beam (25) is connected with second cross beam (22), and the other end is connected with the first girder (31);
Described inner core (4) is connected with the beam on each limit, bearing support group (2) hexagon space.
2. three pipe sleeve-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 regular hexagon space.
3. as claimed in claim 2 three manage sleeve-type chimney mounting structures, it is characterized in that, support flange (51) is installed on described inner core (4), and being provided with uniform six supporting-points (5) at support flange (51), support flange (51) is connected with the beam on each limit, bearing support group (2) hexagon space by supporting-point (5).
4. as claimed in claim 1 three manage sleeve-type chimney mounting structures, it is characterized in that, in described below, bearing support group (2) hexagon space, system rolling steelframe (7) is installed, the inside of above-mentioned system rolling steelframe (7) forms the hexagon space identical with bearing support group (2), and inner core (4) is arranged in the hexagon space of the inside of making rolling steelframe (7).
5. as claimed in claim 4 three manage sleeve-type chimney mounting structures, it is characterized in that, described system is shaken each limit in hexagon space, inside of steelframe (7) and is connected with each limit in the hexagon space of bearing support group (2), in above-mentioned system, shakes and is provided with and makes rolling point (8) between each limit in hexagon space, inside of steelframe (7) and the outer wall of inner core (4).
6. as claimed in claim 5 three manage sleeve-type chimney mounting structures, it is characterized in that, described system is shaken point (8) for being arranged on the system rolling cushion block (81) between inner core (4) and system rolling steelframe (7).
7. three pipe sleeve-type chimney mounting structures as claimed in claim 4, is characterized in that, inner core (4), axially adopting segmentation support pattern, connects by expansion joint (9) between each section of inner core.
8. three pipe sleeve-type chimney mounting structures as claimed in claim 7, is characterized in that, described expansion joint (9) is arranged in system rolling steelframe (7).
9. three pipe sleeve-type chimney mounting structures as claimed in claim 1, is characterized in that, inner core (4), axially adopting segmentation support pattern, connects by expansion joint (9) between each section of inner core.
10. three pipe sleeve-type chimney mounting structures as claimed in claim 1, is characterized in that, interconnect, and be formed centrally equilateral triangle between described three girders (3) in urceolus (1).
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 CN102677943A (en) | 2012-09-19 |
| CN102677943B true CN102677943B (en) | 2014-04-09 |
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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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Families Citing this family (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 |
| CN107795184B (en) * | 2017-10-30 | 2020-06-05 | 四川电力设计咨询有限责任公司 | Truss bearing platform structure of three-pipe sleeve type chimney |
| 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 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP4517113B2 (en) * | 2005-02-14 | 2010-08-04 | 学校法人明治大学 | Chimney damping device |
| CN201666029U (en) * | 2010-03-23 | 2010-12-08 | 张蕊 | Multitube bundling type ultrahigh glass fiber reinforced plastics chimney |
| CN102373825B (en) * | 2010-08-19 | 2013-06-12 | 中冶天工集团有限公司 | Method for installing steel structure quadruplet pipe chimney |
| CN202125113U (en) * | 2011-06-15 | 2012-01-25 | 蚌埠玻璃工业设计研究院 | Multiple-flue chimney |
| CN102409890B (en) * | 2011-09-05 | 2015-11-25 | 张蕊 | Fiber glass reinforced plastic chimney |
| CN202611312U (en) * | 2012-06-04 | 2012-12-19 | 四川电力设计咨询有限责任公司 | Three-pipe sleeve type chimney installation structure |
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