CN216879399U - Detachable truss girder for supporting large-scale tower tray - Google Patents
Detachable truss girder for supporting large-scale tower tray Download PDFInfo
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- CN216879399U CN216879399U CN202220394560.XU CN202220394560U CN216879399U CN 216879399 U CN216879399 U CN 216879399U CN 202220394560 U CN202220394560 U CN 202220394560U CN 216879399 U CN216879399 U CN 216879399U
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Abstract
The utility model relates to a detachable truss girder for supporting a large-scale tower tray, which comprises girders and a downcomer, wherein the girders are vertically arranged on the downcomer at intervals in parallel according to the distance between the tower trays; connecting plates are uniformly arranged on each layer of main beam at intervals, and the connecting plates of the upper and lower adjacent main beams are connected through web members and bolts to form a triangular supporting structure; and both ends of the main beam on each layer are connected with a fixed rib plate welded on the tower body through bolts; the two ends of the main beam positioned at the lowermost layer are connected with support bolts welded on the tower body to realize the stable arrangement of the whole truss girder. According to the utility model, a triangular stable structure is formed between the main beam and the web members, so that the strength, stability and permeability of the truss girder are improved, and the problem of troublesome installation and transportation of the traditional truss girder is solved.
Description
Technical Field
The utility model belongs to the technical field of petrochemical industry, and relates to a tower internal part in a petrochemical industry plate tower, in particular to a detachable truss girder for supporting a large-scale tower tray.
Background
With the national higher and higher requirements of the petrochemical industry in the environmental protection and energy saving fields and the current demand for maximizing the enterprise benefits, the large-scale device becomes a main development trend of the petrochemical industry. The general design of the tray and its supporting structure is to satisfy two requirements simultaneously: firstly, under the operation condition, the requirements of strength and flexibility are required to be met; and secondly, the strength requirement is met under the installation condition. If the tray efficiency is to be improved by simple considerations, it is desirable to have a smaller tray deflection, but if the deflection is allowed to be too small, the thickness of the tray and the cross-sectional dimensions of the support beams will increase, and excessive material will be consumed. Along with the development of large-scale plate-type towers, the defects of adopting steel beams such as I-steel and the like are more and more obvious, particularly in large-scale towers with the length of more than 7 meters, in order to meet the requirements of strength and deflection, the height and the width of the steel beams such as the I-steel and the like are increased in multiples, so that the weight of the beams is overlarge, the occupied space is large, and the flow state and the mass transfer effect of gas-liquid two phases in the towers are seriously influenced. Therefore, I-steel and other shaped steel beams of the large-scale plate tower tray are gradually replaced by truss beams.
The existing truss girder structure is generally a welded structure and mainly comprises two or more parallel chords and vertical rods, diagonal rods or distance rods welded between the parallel chords, the truss girder cannot enter from a manhole, and can be required to be supplied to a tower body factory in advance, the truss girder is required to be installed on a forward tower welded by a last welding line of the tower body, if the truss girder has more parallel chords and is higher, the size is too large, the difficulty is increased for the installation and hoisting work, and the design of the existing truss girder cannot be too high generally; after the truss girder is lifted to the front tower and is installed, the large-scale tower body is generally vertically installed and horizontally transported, and the truss girder is generally required to be supported by a frame in order to avoid damage to the truss girder caused by bumping in the transportation process, so that a large amount of manpower, material resources and financial resources are consumed. Therefore, a detachable truss girder for supporting a large-sized tray, which is convenient to install and transport, is not limited by height in assembly and saves labor cost, is urgently needed.
The following patent documents relevant to the present application are found by search, and specific disclosures are as follows:
1. the truss girder (CN201632084U) of a large-scale plate tower joist support polydisc comprises parallel string, pole setting and down tube, distance rod about parallel and is used for parallel string and the connecting plate of tower body connection respectively, its characterized in that: at least one middle parallel chord parallel to the upper and lower parallel chords is arranged between the upper and lower parallel chords of the truss girder, and the positions of the parallel middle parallel chords are symmetrical; the upper parallel chord, the lower parallel chord and the middle parallel chord are formed by connecting symmetrical section steels in parallel, rectangular chord plates are respectively clamped and fixed between the connected section steels, vertical rods and inclined rods are respectively welded and fixed on two sides of each rectangular chord plate, and the parallel upper parallel chord, the parallel lower parallel chord and the parallel middle chord respectively horizontally support the plate type tower tray.
2. A hump formula truss girder and combination (CN204684699U) for plate tower, the truss girder includes two chords that parallel was separated from each other from top to bottom, connects the web member of two chords from top to bottom and is fixed in hump roof beam and a plurality of gusset plate on each chord, wherein the chord member is the T shaped steel of liquid receiving plate in the horizontal brace plate tower tray, the hump roof beam is the T shaped steel of column plate in the horizontal brace plate tower tray, and the riser bottom welding of hump roof beam is connected to the diaphragm top surface that corresponds the chord member and the diaphragm of hump roof beam is parallel with the diaphragm of chord member, the web member is the unequal-sided angle steel that the symmetry connects in groups, and the long limit one end of unequal-sided angle steel meets with the riser of the chord member of upside and is fixed, and the other end meets with the gusset plate or the hump roof beam of chord member of downside and fixes.
Through comparison of technical features, the technical structures of the above-mentioned patent publications and the present invention are different, and the creativity and novelty of the present invention application are not affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides the detachable truss girder for supporting the large-scale tower tray, which is applied to the large-scale plate tower, overcomes the defects of the traditional I-steel and other steel beams and the defects of the existing welded structure truss girder, meets the strict requirements on the supporting girder in the large-scale plate tower technology, well solves the problems of dismounting and transporting the truss girder, effectively saves the overhauling and mounting space, and greatly reduces the labor cost and the production cost.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
a detachable truss girder for supporting a large-scale tower tray is arranged perpendicular to a downcomer and comprises main girders and the downcomer, wherein the main girders are arranged perpendicular to the downcomer at intervals in parallel up and down according to the distance between the tower trays; connecting plates are uniformly arranged on each layer of main beam at intervals, and the connecting plates of the upper and lower adjacent main beams are connected through web member bolts to form a triangular supporting structure; the two ends of the main beam on each layer are provided with long circular holes matched with bolt holes welded on a fixed rib plate on the tower body, and the main beam is connected with the fixed rib plate through bolts; the main beam positioned on the uppermost layer is a top beam, the main beam positioned in the middle comprises a first main beam assembly and a second main beam assembly, the first main beam assembly and the second main beam assembly are alternately arranged along the vertical direction of the tower body, the first main beam assembly comprises a first main beam, and the second main beam assembly comprises a second main beam; the girder that is located the lower floor is the floorbar, the floorbar both ends still system have with the bolt hole looks adaptation of welding on the support on the tower body by the hole, be connected the stable setting that realizes whole truss roof beam through bolt and support.
The structure of the main beam comprises a single-layer beam structure and a double-layer beam structure, wherein the single-layer beam structure comprises a finished T-shaped beam, a finished I-shaped steel beam and a section steel beam, wherein the finished T-shaped beam and the section steel beam are integrally manufactured; the double-layer beam structure comprises a T-shaped steel beam formed by welding angle steel beams back to back, an I-shaped steel beam formed by welding channel steel back to back and a symmetrical section beam formed by welding other section steel back to back.
And the connecting plates are respectively welded on the central line of the lower surface of the top beam, the central lines of the upper and lower surfaces of the first main beam and the second main beam and the central line of the upper surface of the bottom beam in the length direction of the beams.
And the main beam is of a double-layer beam structure, the connecting plate is clamped at a gap between the back-to-back welded profile steels of the main beam and is connected in a welding manner, and a cover plate is welded at the gap where the connecting plate is not welded on the main beam.
Moreover, the shape line of the web member and the shape line of the main beam are in the same plane and are intersected with the main beam; the web members are made of profile steel, the included angle between each web member and the main beam ranges from 0 degree to 180 degrees, and two or three bolt holes are formed in the two ends of each web member.
The connecting plates comprise a first connecting plate, a second connecting plate and a third connecting plate, the first connecting plates are arranged on the upper surface of the bottom beam, the lower surface of the top beam and the upper and lower surfaces of the second main beam at intervals, the first connecting plate of the bottom beam and the first connecting plate of the top beam are in a vertically symmetrical state, the first connecting plate arranged on the upper surface of the second main beam corresponds to the first connecting plate on the bottom beam, and the first connecting plate arranged on the lower surface of the second main beam corresponds to the first connecting plate on the top beam; the second connecting plates are uniformly distributed on the upper surface and the lower surface of the first main beam at intervals; a third connecting plate is also arranged between the adjacent second connecting plates on the same side of the first main beam; and the second connecting plate and the third connecting plate which are adjacent on the first main beam are connected with the corresponding first connecting plates on the upper and lower adjacent main beams through web members to form a triangular structure.
And the length of the first connecting plate is 2-3 times of the length of the third connecting plate and the second connecting plate.
And the main beam penetrates through the corresponding position of the down-flow plate and is welded with a down-flow plate connecting plate, and the down-flow plate connecting plate is provided with holes matched with bolt holes on the down-flow plate.
And the fixed rib plate is made of profile steel, two bolt holes are formed in one end of the fixed rib plate in the vertical direction, the fixed rib plate is welded on the inner wall of the tower body, and the bolt holes in the fixed rib plate are matched with the long circular holes in the two ends of the main beam.
The utility model has the advantages and positive effects that:
1. according to the detachable truss girder for supporting the large-scale tower tray, the triangular stable structure is formed between the main girders and the web members, the strength is good, the stability is high, the permeability is good, the girder overcomes the defects of the traditional truss girder installation and design method, the movable connection mode of each parallel main girder through the web members is adopted, the truss girder is not limited by the height, the multilayer connection can be adopted in the tower, and the higher the girder is, the stronger the deformation resistance of the girder is.
2. For the plate tower with smaller tray spacing, the components of the truss girder can smoothly enter the tower from the manhole without being lifted to the tower for installation, and the truss girder components of the lifted tower can be transported to the site along with the tower body for installation, so that the complex flow of frame support on the installed truss girder in the transportation process is avoided, the supply period is greatly shortened, and the labor cost is greatly reduced.
3. The truss girder is installed through the vertical downcomer and is connected with the downcomers in the multi-overflow tray to form a framework supporting beam structure similar to a fishbone shape, so that the requirements of the strength and small deflection of the tray are met, the size of the section of the girder of the truss girder is greatly reduced, the production cost is saved, meanwhile, the flow area of gas and liquid in the tower can be better ensured, the transverse mixing of the gas and liquid in the tower is increased, the gas phase flow resistance is reduced, and the pressure drop in the tower is better reduced.
Drawings
Fig. 1 is a schematic view of a detachable truss girder structure.
Fig. 2 is a view of a split truss girder a-a.
FIG. 3 is a top plan view of a removable truss girder.
Fig. 4 is a schematic view of a detachable truss girder 1-1.
Fig. 5 is a schematic view of a split truss girder 1-2.
Wherein: 1-main beam, 2-connecting plate, 3-web member, 4-down flow plate connecting plate, 5-cover plate, 6-fixed rib plate, 7-support, 8-tower body; 1-first main beam assembly 1-2-second main beam assembly.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.
A detachable truss girder for supporting a large-scale tower tray is arranged perpendicular to a downcomer and comprises main girders 1, web members 3 and the downcomer, wherein the main girders are arranged perpendicular to the downcomer at intervals in parallel according to the distance between the tower trays; connecting plates 2 are uniformly arranged on each layer of main beam at intervals, and the connecting plates of the upper and lower adjacent main beams are connected through web member bolts to form a triangular supporting structure; and both ends of the main beam of each layer are provided with oblong holes matched with bolt holes on a fixed rib plate 6 welded on the tower body 8, and the main beam is connected with the fixed rib plate through bolts; the main beam positioned on the uppermost layer is a top beam, the main beam positioned in the middle comprises a first main beam assembly and a second main beam assembly, the first main beam assembly 1-1 and the second main beam assembly 1-2 are alternately arranged along the vertical direction of the tower body, the first main beam assembly comprises a first main beam, and the second main beam assembly comprises a second main beam; the main beam at the lowest layer is a bottom beam, two ends of the bottom beam are also provided with a leaning hole matched with a bolt hole welded on a support 7 on the tower body, and the stable arrangement of the whole truss girder is realized by connecting bolts with the support;
the structure of the main beam comprises a single-layer beam structure and a double-layer beam structure, wherein the single-layer beam structure comprises a T-shaped beam, an I-shaped steel beam and a section steel beam formed by welding and connecting steel plates, and the T-shaped beam is an integrally manufactured finished product T-shaped beam; the I-shaped steel beam is a finished I-shaped steel beam which is integrally manufactured; the double-layer beam structure comprises a T-shaped steel beam formed by welding angle steel beams back to back, an I-shaped steel beam formed by welding channel steel back to back and a symmetrical section beam formed by welding other section steel back to back;
the welding position of the connecting plate and the shape of the connecting plate are related to the type and the interval of the main beam and the included angle of the web members;
when the main beam is of a single-layer beam structure, the connecting plates are respectively welded on the central line of the lower surface of the main beam on the uppermost layer along the length direction of the beam; the welding is carried out on the central line of the upper and lower surfaces of the main beam positioned in the middle, and the central line of the length direction of the upper surface of the main beam positioned at the lowest layer;
when the main beam is of a double-layer beam structure, the connecting plate is clamped between section steels forming the main beam along the length direction of the beam and is respectively welded with the main beam; however, the connecting plates are clamped between the section steels forming the main beams, so that gaps are formed at the positions without the connecting plates, in order to prevent liquid leakage, the cover plates 5 need to be welded at the positions of the gaps on the upper surfaces of the main beams to prevent liquid leakage, the length of each cover plate is determined by the distance between the connecting plates, and the width of each cover plate is mainly not influenced by the installation of a tray;
the shape line of the web member and the shape line of the main beam are in the same plane and are intersected with the main beam; the web members can be of angle steel, channel steel, other section steel or steel plate structures, the design angle between the web members is larger than 0 degree and smaller than 180 degrees, and two or three bolt holes are formed in two ends of each web member to be matched with the bolt holes formed in the connecting plate;
the connecting plate comprises a first connecting plate, a second connecting plate and a third connecting plate, the first connecting plate and the third connecting plate are special-shaped connecting plates, the second connecting plate is a rectangular connecting plate, and the length of the first connecting plate is 2-3 times that of the second connecting plate and the third connecting plate;
the first connecting plates are arranged on the upper surface of the bottom beam, the lower surface of the top beam and the upper and lower surfaces of the second main beam at intervals, the first connecting plates of the bottom beam and the first connecting plates of the top beam are in an up-down symmetrical state, the first connecting plates arranged on the upper surface of the second main beam correspond to the first connecting plates on the bottom beam, and the first connecting plates arranged on the lower surface of the second main beam correspond to the first connecting plates on the top beam; the second connecting plates are uniformly distributed on the upper surface and the lower surface of the first main beam at intervals; a third connecting plate is also arranged between the adjacent second connecting plates on the same side of the first main beam; a second connecting plate of the first main beam assembly corresponds to the first connecting plate on the bottom beam, the top beam and the second main beam in the vertical direction, and a second connecting plate and a third connecting plate which are adjacent to each other on the first main beam are connected with a first connecting plate which corresponds to the upper and lower adjacent main beams through web members to form a triangular structure;
the main beam is vertically installed with the down-flow plate when being installed, so the down-flow plate connecting plate 4 is welded at the corresponding position of the main beam penetrating through the down-flow plate, the down-flow plate connecting plate is a special-shaped plate welded on the main beam, the shape of the down-flow plate connecting plate is determined according to the web member at the specific position, each down-flow plate connecting plate connected with the main beam is generally divided into two parts to be welded together across the main beam in a butt welding way, and bolt holes matched with the bolt holes on the down-flow plate are formed on the down-flow plate connecting plate 4;
the fixed rib plate can be an angle steel, a channel steel, other section steels or a square or trapezoid steel plate structure which is convenient to connect. One end of the fixing rib plate is provided with two bolt holes in the vertical direction, the fixing rib plate is welded on the inner wall of the tower body, and the bolt holes on the fixing rib plate are matched with the long round holes at the two ends of the main beam;
the last layer of main beam of the truss girder is lapped on a support welded on the tower body, and two bolt holes on a flat plate of the support are matched with bolt holes on a wing plate of the main beam.
The main beam adopted by the embodiment is a double-layer beam structure, in particular to a T-shaped steel beam formed by welding angle steel beams back to back; when the tower is installed, the girder of the truss girder is as shown in fig. 4 and 5, if the tray interval is not large, the tower can enter from a manhole, the girder enters into a tower body, the tray interval is perpendicular to the direction of the downcomer and is arranged in parallel up and down, the girder is connected with bolt holes welded on a fixed rib plate on the tower body through slotted holes at two ends through bolts, the number of the girder can be determined according to the number of actual tray layers, the last layer of tray is lapped on a support of a tower wall and is connected with the support through bolts, after the girder is installed, a web member can be installed according to the designed included angle of the web member, the web member is connected with a connecting plate on the girder through the bolt holes through bolts, so that the truss girder is conveniently installed, and then the tray and the downcomer are installed.
The detachable truss girder for supporting the large-scale tower tray overcomes the defects of the traditional truss girder installation and design method, adopts a movable connection mode through the web members between each two parallel main girders, and is not limited by height; for the plate tower with smaller tray spacing, the components of the truss girder can smoothly enter the tower from the manhole without being lifted to the tower for installation, and the truss girder components of the lifted tower can be transported to the site along with the tower body for installation, so that the complex flow of frame support in the transportation process is avoided, the supply period is greatly shortened, and the labor cost is greatly reduced; and the truss girder is installed through the vertical downcomer, and forms a frame supporting beam structure similar to a fishbone shape after being connected with the downcomer in the multi-overflow tray, so that the requirements of tray strength and small deflection are ensured, the size of the girder section of the truss girder is greatly reduced, and the production cost is saved.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (9)
1. A removable truss girder for supporting a large tray, installed perpendicular to a downcomer, characterized in that: the tray comprises main beams and a downcomer plate, wherein the main beams are vertical to the downcomer plate and are arranged in parallel at intervals up and down according to the distance of a tray; connecting plates are uniformly arranged on each layer of main beam at intervals, and the connecting plates of the upper and lower adjacent main beams are connected through web members and bolts to form a triangular supporting structure; the two ends of the main beam on each layer are provided with long circular holes matched with bolt holes welded on a fixed rib plate on the tower body, and the main beam is connected with the fixed rib plate through bolts; the main beam positioned on the uppermost layer is a top beam, the main beam positioned in the middle comprises a first main beam assembly and a second main beam assembly, the first main beam assembly and the second main beam assembly are alternately arranged along the vertical direction of the tower body, the first main beam assembly comprises a first main beam, and the second main beam assembly comprises a second main beam; the girder that is located the lower floor is the floorbar, the floorbar both ends still system have with the bolt hole looks adaptation of welding on the support on the tower body by the hole, be connected the stable setting that realizes whole truss roof beam through bolt and support.
2. The removable truss girder for supporting a large tray of claim 1 wherein: the structure of the main beam comprises a single-layer beam structure and a double-layer beam structure, wherein the single-layer beam structure comprises a finished T-shaped beam, a finished I-shaped steel beam and a section steel beam, wherein the finished T-shaped beam, the finished I-shaped steel beam and the section steel beam are integrally manufactured; the double-layer beam structure comprises a T-shaped steel beam formed by welding angle steel beams back to back, an I-shaped steel beam formed by welding channel steel back to back and a symmetrical section beam formed by welding other section steel back to back.
3. A collapsible truss beam for supporting a large scale tray as defined in claim 2 wherein: the connecting plates are respectively welded on the central line of the lower surface of the top beam, the central lines of the upper and lower surfaces of the first main beam and the second main beam and the central line of the upper surface of the bottom beam in the length direction of the beams.
4. A collapsible truss beam for supporting a large scale tray as defined in claim 2 wherein: the girder is of a double-layer girder structure, the connecting plate is clamped at a gap between the back-to-back welded profile steels of the girder and is welded and connected, and a cover plate is welded at the gap where the connecting plate is not welded on the girder.
5. The removable truss girder for supporting a large tray of claim 1 wherein: the shape line of the web member and the shape line of the main beam are in the same plane and are intersected with the main beam; the web members are made of profile steel, the included angle between each web member and the main beam ranges from 0 degree to 180 degrees, and two or three bolt holes are formed in the two ends of each web member.
6. The removable truss girder for supporting a large tray of claim 1 wherein: the connecting plates comprise a first connecting plate, a second connecting plate and a third connecting plate, the first connecting plates are arranged on the upper surface of the bottom beam, the lower surface of the top beam and the upper and lower surfaces of the second main beam at intervals, the first connecting plate of the bottom beam and the first connecting plate of the top beam are in an up-down symmetrical state, the first connecting plate arranged on the upper surface of the second main beam corresponds to the first connecting plate on the bottom beam, and the first connecting plate arranged on the lower surface of the second main beam corresponds to the first connecting plate on the top beam; the second connecting plates are uniformly distributed on the upper surface and the lower surface of the first main beam at intervals; a third connecting plate is also arranged between the adjacent second connecting plates on the same side of the first main beam; and the second connecting plate and the third connecting plate which are adjacent on the first main beam are connected with the corresponding first connecting plates on the upper and lower adjacent main beams through web members to form a triangular structure.
7. The removable truss girder for supporting a large tray of claim 6 wherein: the length of the first connecting plate is 2-3 times that of the third connecting plate and the second connecting plate.
8. The removable truss girder for supporting a large tray of claim 1 wherein: and the main beam is welded with a down-flow plate connecting plate at the corresponding position penetrating through the down-flow plate, and the down-flow plate connecting plate is provided with holes matched with bolt holes on the down-flow plate.
9. The removable truss girder for supporting a large tray of claim 1 wherein: the fixed rib plate is made of profile steel, two bolt holes are formed in one end of the fixed rib plate in the vertical direction, the fixed rib plate is welded on the inner wall of the tower body, and the bolt holes in the fixed rib plate are matched with the long circular holes in the two ends of the main beam.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220394560.XU CN216879399U (en) | 2022-02-25 | 2022-02-25 | Detachable truss girder for supporting large-scale tower tray |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220394560.XU CN216879399U (en) | 2022-02-25 | 2022-02-25 | Detachable truss girder for supporting large-scale tower tray |
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| CN216879399U true CN216879399U (en) | 2022-07-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558542A (en) * | 2022-02-25 | 2022-05-31 | 北洋国家精馏技术工程发展有限公司 | Large-scale tower tray structure with high strength, high deflection and small disassembly and assembly convenience |
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2022
- 2022-02-25 CN CN202220394560.XU patent/CN216879399U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558542A (en) * | 2022-02-25 | 2022-05-31 | 北洋国家精馏技术工程发展有限公司 | Large-scale tower tray structure with high strength, high deflection and small disassembly and assembly convenience |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Detachable truss beams for supporting large tower trays Effective date of registration: 20230926 Granted publication date: 20220705 Pledgee: Bohai Bank Co.,Ltd. Tianjin Branch Pledgor: BEIYANG NATIONAL DISTILLATION TECHNOLOGY ENGINEERING DEVELOPMENT Co.,Ltd. Registration number: Y2023120000079 |
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