CN114558542A - Large-scale tower tray structure with high strength, high deflection and small disassembly and assembly convenience - Google Patents
Large-scale tower tray structure with high strength, high deflection and small disassembly and assembly convenience Download PDFInfo
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- CN114558542A CN114558542A CN202210179868.7A CN202210179868A CN114558542A CN 114558542 A CN114558542 A CN 114558542A CN 202210179868 A CN202210179868 A CN 202210179868A CN 114558542 A CN114558542 A CN 114558542A
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- 239000007788 liquid Substances 0.000 claims abstract description 54
- 229910000831 Steel Inorganic materials 0.000 claims description 54
- 239000010959 steel Substances 0.000 claims description 54
- 239000010410 layer Substances 0.000 claims description 50
- 238000003466 welding Methods 0.000 claims description 28
- 239000002356 single layer Substances 0.000 claims description 8
- 241000357293 Leptobrama muelleri Species 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
- B01J19/325—Attachment devices therefor, e.g. hooks, consoles, brackets
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to a large-scale tower tray structure with high strength, high deflection, small size and convenient assembly and disassembly, which comprises tower tray plates, a truss girder, a downcomer plate, a liquid receiving plate and a hanging beam structure, wherein the truss girder is vertically arranged with a plurality of downcomer plates; the tower plate is movably connected with each layer of main beam of the down-flow plate, the liquid receiving plate and the truss girder, the bottom of the down-flow plate on the side is welded with the next layer of liquid receiving plate to form a positioning rib plate, a plurality of groups of hanging beam structures are arranged between the down-flow plates in the middle, each group of hanging beam structure comprises a first connecting rod and a second connecting rod, the first connecting rod horizontally stretches across the down-flow plates and is connected with the first connecting rod, the second connecting rod is vertically installed with the first connecting rod, the first rib plate and the second rib plate are welded on the lower portion of the second connecting rod, and the second rib plate is connected with the lower layer of liquid receiving plate through bolts. The invention solves the problems of supporting, dismounting and transporting of the tower tray in the large-scale tower, effectively saves the time for overhauling and installing, and greatly reduces the labor cost and the production cost.
Description
Technical Field
The invention belongs to the technical field of petrochemical engineering, and relates to a tower internal part in a petrochemical engineering plate tower, in particular to a large-scale tower tray structure with high strength, high deflection, small size and convenient assembly and disassembly.
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, market competition is more and more intense, the requirements for convenient disassembly and assembly and light weight of tower trays are higher and higher, the defect of adopting steel beams such as I-steel and the like is more and more obvious, particularly in large-scale towers with the length of more than 7 meters, in order to ensure the requirements for strength and deflection, the height and the width of the steel beams such as I-steel and the like are increased by times, 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. With the requirement of optimizing the large-diameter tower tray structure, the requirement is that the large-diameter tower tray structure is optimized as much as possible while the strength and the rigidity of the tower tray are ensured, and the production cost is reduced.
The existing tower tray with large tower diameter adopts a plurality of truss girders to support the tower tray on each layer in order to meet the requirements of strength and small deflection, the existing truss girder structure is generally a welded structure and mainly comprises upright rods, diagonal rods or distance rods welded between two or more parallel chords and parallel chords, the truss girders generally cannot enter from manholes, and can be required to be supplied to a tower body factory in advance and be installed on an advancing tower welded by a last welding line of the tower body, if the truss girders have more parallel chords and are higher, the difficulty can be increased for the installation and hoisting work due to overlarge body size, and therefore the design of the existing truss girders generally cannot be too high. After the truss girder is lifted to the front tower and is installed, the large-scale tower body is 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 tower tray structure which is not limited by height in installation, convenient in transportation and assembly, high in strength and small in deflection is urgently needed.
The following patent documents relevant to the present application are found by search, and specific disclosures are as follows:
1. a sectional tray (CN211865044U) for easy assembly and disassembly, comprising: the lower support, the support ring and the tower tray plate; the tower tray plate is circular, the tower tray plate is formed by splicing two groups of tower tray sub-plates, the two groups of tower tray sub-plates are symmetrical relative to the vertical diameter direction of the tower tray plate, each group of tower tray sub-plates are divided into 9 pieces along the vertical diameter direction, namely the tower tray plate comprises 18 tower tray sub-plates, and except that 4 tower tray sub-plates at the outermost side are provided with an edge vertical to the vertical diameter direction, the rest tower tray sub-plates are provided with two parallel edges vertical to the vertical diameter direction; each set of tower tray plates comprises: the tray comprises a first tray sub-plate, a second tray sub-plate, a third tray sub-plate, a fourth tray sub-plate, a fifth tray sub-plate, a sixth tray sub-plate, a seventh tray sub-plate, an eighth tray sub-plate and a ninth tray sub-plate; the lower support is connected with the tray plate through a support, a first top plate of the lower support is connected with a lower bottom plate of the support through a bolt, a second top plate of the support is connected with the tray plate through a bolt and a fastener, the support is of an I-shaped structure, and two ends of the second top plate of the support are connected with a group of tray sub-plates through the bolt and the fastener respectively; and all the tower tray sub-plates are connected at the positions adjacent to each other through bolts, and are fixedly connected with the support ring through bolts and connecting pieces, so that the integral structure installation of the tower tray is realized.
2. A tray plate connecting piece (CN201620283749.6), one end of a first tray plate is provided with a lapping part, the height of the plane of the lapping part is lower than that of the plane of the first tray plate, the plane of the lapping part is parallel to that of the first tray plate, the tray plate connecting piece comprises a first end and a second end which are oppositely arranged, the second end is fixed on the first tray plate, the first end extends in the direction perpendicular to the plane of the first tray plate to obtain a protrusion, the second tray plate comprises a first surface and a second surface which are oppositely arranged, so that the second surface is attached to the lapping part, and the second tray plate slides towards or away from the first tray plate relative to the protrusion, so that the protrusion is fixed with or separated from the first surface.
3. The utility model provides a can dismantle sectional type tower tray (CN210700024U) convenient to transport, includes the support, the support mounting is inboard at the body of the tower, the vertical welding in support top has adjusting bolt, the vertical cartridge of trompil is passed through on the adjusting bolt top in tray board one side, adjusting bolt top spiro union has adjusting nut, the vertical welding in one side top that the tray board is close to the support has fixing bolt, the fixing bolt top is through the vertical cartridge of trompil on the clamp plate. The detachable sectional type tower tray convenient to carry is convenient to disassemble and assemble through the fixing bolt and the fixing nut, the threaded connection is convenient to disassemble and assemble, the pressing sheet and the pressing ring are used for compacting the filler, and the air tightness of the detachable sectional type tower tray is guaranteed; can let the gas of tray board below enter into tray board top through the tray bubble cap, spacing bolt and stop nut cooperation are used, can adjust the degree of opening and shutting between bubble cap and the gas-lift pipe to adjust the velocity that gas rises.
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.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a large-scale tower tray structure with high strength, small deflection and convenient assembly and disassembly.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a large-scale tower tray structure with high strength, high deflection and small disassembly and assembly convenience comprises a tower body, tower tray plates, a truss beam, a downcomer plate, a liquid receiving plate and a hanging beam structure, wherein the truss beam is formed by movably connecting and combining multiple layers of main beams through web members, the truss beam is perpendicular to the plurality of downcomer plates, the tower tray plates are movably connected with the downcomer plate, the liquid receiving plate and each layer of main beam of the truss beam, the downcomer plate comprises a downcomer plate body, a downcomer plate connecting plate I and a downcomer plate connecting plate II, the downcomer plate connecting plate I is fixedly arranged on each layer of main beam of the truss beam at intervals, the two downcomer plate connecting plates are fixedly arranged on the tower body at intervals, and two ends of the downcomer plate body are respectively connected with the downcomer plate connecting plate I and the downcomer plate connecting plate II through bolts to form a fishbone-shaped frame beam structure;
the bottoms of the down-flow plates on the edges are connected with a bottom liquid receiving disc through welding a plurality of positioning rib plates, the down-flow plates in the middle are symmetrically arranged, and a plurality of groups of hanging beam structures are arranged between the down-flow plates in the symmetrically arranged state; the gas phase circulation holes which are beneficial to the gas circulation at the two sides of the down-flow plate are formed on the down-flow plate at the position of each group of hanging beam structures; every group the hanging beam structure includes connecting rod one and connecting rod two, connecting rod one level spanes between the downcomer, two quadrature movable mounting of connecting rod are at connecting rod one middle part, form a hanging beam structure with connecting rod one, the welding of two lower part both sides of connecting rod has gusset one, gusset one is used for along being connected with the downcomer down, the welding of two bottom end portions of connecting rod has gusset two, receives liquid dish bolted connection through this gusset two and lower floor, forms a complete tower tray structure.
Moreover, the truss girder comprises a plurality of layers of main girders, and the plurality of layers of main girders are vertically arranged on the downcomer at intervals in parallel according to the distance between the 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; and the girder that is located the superiors is the back timber, and the girder that is located the intermediate position includes first girder subassembly and second girder subassembly, first girder subassembly and second girder subassembly set up along the vertical direction of tower body range in turn, first girder subassembly includes first girder, and second girder subassembly includes the second girder, and the girder that is located the lower floor is the floorbar, the floorbar both ends still system have with the hole of putting by of the bolt hole looks adaptation of welding on the support on the tower body, 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 structure of the main beam is a single-layer beam structure, and a plurality of connecting plates are welded on the central line of the surface of the main beam along the length direction of the beam.
And the girder is double-deck beam structure, and the seam department between the back-to-back welded shaped steel of girder presss from both sides the dress and welds along the length direction of roof beam and has a plurality of connecting plates, and still welds the apron in the seam department that the girder does not weld the connecting plate.
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 profile steels, 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.
The hanging beam structure spans between the down-flow plates and is connected with the down-flow plates at two sides through bolts, and the bottom of the hanging beam structure is connected with the next layer of liquid receiving plate to form an integral supporting component; and a first connecting rod in the hanging beam structure is a square pipe or a round pipe with a flange plate, the flange plate is provided with a bolt hole, and a hole with the same pipe diameter and a matched bolt are also arranged at the position of the joint of the down-flow plate and the down-flow plate.
Moreover, the tray plate is an angle steel tray plate, a floating valve tray plate and a sieve plate tray plate; the liquid receiving plate is a flat liquid receiving plate or a concave liquid receiving plate, a gap exists between the down-flow plate and the upper surface of the liquid receiving plate, and bolt holes corresponding to the second rib plate are formed in the liquid receiving plate corresponding to the hanging beam structure formed by the connecting rods in the middle of the down-flow plate.
And the upper end of the positioning rib plate is welded on the down-flow plate, the lower end of the positioning rib plate is welded on the liquid receiving disc of the next layer, so that the down-flow plate and the liquid receiving disc are integrated, and the positioning rib plate is an angle steel or a steel plate.
The invention has the advantages and positive effects that:
1. the invention provides a large-scale tower tray structure with high strength, high deflection, small disassembly and assembly convenience, wherein a large-scale detachable truss girder is adopted, a triangular stable structure is mainly formed by movably connecting main girders and web pull rods, 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 the web rods is adopted between each upper and lower parallel main girders, so the truss girder is not limited by the height, the multilayer connection can be adopted in a tower, and the higher the girder is, the stronger the girder has the capability of resisting deformation. 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.
2. The invention provides a large detachable truss girder in a large tray structure, which is installed through a vertical downcomer and is connected with the downcomer in a multi-overflow tray to form a frame supporting beam structure similar to a fishbone shape.
3. The T-shaped hanging beam is formed by arranging the first connecting rod and the second connecting rod between the down-flow plates. The left end and the right end of the hanging beam are connected with the two corresponding down-flow plates, and the bottom of the hanging beam is connected with the lower-layer liquid receiving plate, so that an integral supporting component with better strength and rigidity is formed. The strength and small deflection requirements of the tray are further guaranteed, the use of auxiliary beams of the tray is reduced, and the production cost is further reduced. On the other hand, the first connecting rod is used for connecting the downcomer plates in a communicating pipe mode, gas phase circulation of two sides of the downcomer plates is facilitated for the multi-overflow tower trays, the gas-liquid circulation area in the tower is better guaranteed, transverse mixing of gas and liquid in the tower is increased, gas phase flow resistance is reduced, gas distribution at the bottom of each layer of tower tray is more uniform, and improvement of efficiency of the tower tray is facilitated.
Drawings
Fig. 1 is a schematic structural view of a structural front view of a large-scale tray with high strength, high flexibility, small size and convenient assembly and disassembly.
Fig. 2 is a view a-a in the front view of a large tray structure with high strength, high flexibility, small size, and easy assembly and disassembly.
Fig. 3 is a B-B view in the front view of a large tray structure with high strength, high flexibility, small size, and easy assembly and disassembly.
Fig. 4 is a specific structural schematic diagram of a connecting rod I and a connecting rod II between the downcomer plates in a large-scale tray structure with high strength, small deflection and convenient assembly and disassembly.
Fig. 5 is a front view of a large removable truss girder in a large tray structure having high strength, small deflection, and easy assembly and disassembly.
Fig. 6 is a C-C view in front view of a large detachable truss girder in a large tray structure having high strength, small deflection, and easy assembly and disassembly.
Fig. 7 is a top view of a large detachable truss girder in a large tray structure having high strength, high deflection, small size, and easy assembly and disassembly.
Fig. 8 is a front view of a large removable truss girder in a large tray structure having high strength, small deflection, and easy assembly and disassembly.
Fig. 9 is a front view of a large removable truss girder in a large tray structure having high strength, small deflection, and easy assembly and disassembly.
Wherein: the tower comprises 1-tray plate, 2-truss beam, 2-1 main beam, 2-2 connecting plate, 2-3 web member, 2-4 first connecting plate, 2-5 cover plate, 3-downcomer plate, 4-second connecting plate, 5-first connecting rod, 5-1 flange plate, 6-second connecting rod, 6-1 first rib plate, 6-2 second rib plate, 7-positioning rib plate, 8-liquid receiving tray, 9-fixing rib plate, 10-support, 11-tower body, 2-1-1 first main beam assembly and 2-2-1 second main beam assembly.
Detailed Description
The present invention will be described in more detail below with reference to the following embodiments, which are provided by way of illustration only and are not intended to limit the scope of the present invention.
A large-scale tower tray structure with high strength, high deflection and small disassembly and assembly convenience comprises a tower body 11, a tower tray plate 1, a truss girder 2, a downcomer plate 3, a first downcomer plate connecting plate 2-4, a second downcomer plate connecting plate 4 and a liquid receiving tray 8, wherein the truss girder is formed by combining a plurality of layers of detachable main girders 2-1, a plurality of first downcomer plate connecting plates are welded on each main girder of the truss girder at intervals, and a plurality of second downcomer plate connecting plates are welded on the tower body at intervals; the downcomer is perpendicular to the truss girder, one end of the downcomer is connected with the first downcomer connecting plate through a bolt, and the other end of the downcomer is connected with the second downcomer connecting plate through a bolt, so that a structure similar to a fishbone-shaped frame girder is formed; the tower tray plate is connected with the liquid receiving tray, the liquid descending plate and each layer of main beam of the truss girder through bolts or clamps;
the bottom of the downcomer on the edge is welded with a plurality of positioning rib plates 7 which can be angle steel or steel plates and are mainly used for connecting the bottom of the downcomer with a next-layer liquid receiving disc, the positioning rib plates reinforce the liquid receiving discs and ensure the bottom clearance of the downcomer, a plurality of groups of hanging beam structures are arranged between the downcomers in the middle position, and the downcomer at each group of hanging beam structures is provided with a gas phase circulation hole; the hanging beam structure comprises a first connecting rod 5 and a second connecting rod 6, the first connecting rod horizontally stretches across between the first downcomer plates, the second connecting rod is vertically and movably mounted in the middle of the first connecting rod to form a hanging rod structure, rib plates 6-1 are welded on two sides of the lower portion of the second connecting rod, the rib plates are used for being connected with the lower edges of the first downcomer plates to ensure bottom gaps, rib plates 6-2 are welded at the bottom end portions of the second connecting rods, and are in bolted connection with liquid receiving plates in lower-layer tower trays through the rib plates to realize hoisting and supporting of the lower-layer tower tray plates, and meanwhile, the two downcomer plates and the lower-layer liquid receiving plates form an integral supporting component with good strength and rigidity; auxiliary beams of the tower tray are reduced, so that the production cost is reduced;
the truss girder comprises a plurality of layers of main girders, and the plurality of layers of main girders are vertically arranged in parallel at intervals in a manner of being vertical to the downcomer according to the distance between the trays; connecting plates 2-2 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 members 2-3 by bolts to form a triangular supporting structure; and both ends of the main beam on each layer are provided with oblong holes matched with bolt holes on a fixed rib plate 9 welded on the tower body, and the main beam is connected with the fixed rib plate through bolts; the girder on the uppermost layer is a top girder, the girder in the middle comprises a first girder component 2-1-1 and a second girder component 2-1-2, the first girder component and the second girder component are alternately arranged along the vertical direction of the tower body, the first girder component comprises a first girder, the second girder component comprises a second girder, the girder on the lowermost layer is a bottom girder, two ends of the bottom girder are also provided with a lap hole matched with a bolt hole on a support 10 welded 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 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; but the connecting plates are clamped between the section steels forming the main beam, so that no gap exists at the connecting plates, in order to prevent liquid leakage, 2-5 cover plates are required to be welded at the gap on the upper surface of the main beam to prevent liquid leakage, the length of each cover plate is determined by the distance between the connecting plates, and the width does not influence the installation of the tower 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 the two ends of each web member and are 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; 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.
The main beam is vertically installed with the down-flow plate when being installed, so a first down-flow plate connecting plate is welded at a corresponding position of the main beam penetrating through the down-flow plate, the first down-flow plate connecting plate is a special-shaped plate welded on the main beam, the shape of the first down-flow plate connecting plate is determined according to a web member at the specific position of the first down-flow plate connecting plate, each first down-flow plate connecting plate connected with the main beam is generally divided into two parts to be welded together in a butt welding mode across the main beam, and bolt holes are formed in the first down-flow plate connecting plate to be matched with bolt holes in the down-flow plate;
the fixed rib plate can be angle steel, channel steel, other section steel or square or trapezoid and other steel plate structures which are 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 tray is installed, the girder of the truss girder is as shown in fig. 6, if the tray space is not large, the tray can enter from a manhole, the girder enters the tower body, the tray space is perpendicular to the direction of the downcomer, the tray space is arranged in parallel up and down, the girder is connected with bolt holes on a fixed rib plate welded 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, and the web member is connected with a connecting plate on the girder through the bolt holes, so that the truss girder is conveniently installed, and then the downcomer, the liquid receiving plate and the tray plate are installed.
The connecting rod is a square tube or a round tube with a flange plate 5-1, and can also be a section steel structure such as angle steel, channel steel, H steel and the like; when the first connecting rod is a square tube or a round tube, the circulation of the gas phase at the bottom of the tray can be promoted, the gas phase at the bottom of the tray is more uniform, and the aperture can be DN 50-DN 500 mm; the first connecting rod spans between the down-flow plates, flange plates are welded at two ends of the first connecting rod, bolt holes are formed in the flange plates, and holes with the same pipe diameter and matched bolt holes are also formed in the positions of the joints of the down-flow plates and the down-flow plates;
the connecting rod II can be fixed with the connecting rod I in a movable connection or welding mode, the rib plate I is welded on the connecting rod II and used for being connected with the lower edge of the downcomer to ensure a bottom clearance, and the rib plate II is welded on the connecting rod II and used for being connected with the liquid receiving disc in the lower-layer tower tray to hoist and support the liquid receiving disc in the lower-layer tower tray, so that auxiliary beams of the tower tray can be reduced, and the production cost is reduced;
the tray plate can be an angle steel tray, a float valve tray, a sieve tray or other types of trays, the tray plate can be partitioned according to the size of a manhole, one end of the tray plate is arranged on the down-flow plate, the other end of the tray plate is arranged on the liquid receiving tray, a bolt hole corresponding to the second rib plate is arranged on the liquid receiving plate corresponding to the hanging beam consisting of the connecting rod in the middle of the down-flow plate, thus, one end of the down flow plate is connected with the first down flow plate connecting plate in the truss girder by bolts, the other end is connected with the second down flow plate connecting plate by bolts, at the moment, the down flow plate and the large detachable truss girder form a large frame girder structure similar to a fishbone type, the structure is more stable, the strength is higher, the deflection is smaller through finite element calculation, meanwhile, a connecting rod I and a connecting rod II are arranged between the downcomer plates to hoist the liquid receiving positions of the next layer of tower tray, so that a large-scale tower tray structure with high strength, high deflection, small size and convenience in assembly and disassembly is formed.
The liquid receiving plate is a flat liquid receiving plate or a concave liquid receiving plate, a certain bottom gap exists between the down-flow plate and the upper surface of the liquid receiving plate, and bolt holes corresponding to the second rib plates are formed in the liquid receiving plate corresponding to the hanging beam formed by the connecting rods in the middle of the down-flow plate.
The large-scale tower tray structure provided by the invention has high strength, high deflection, small size and convenient assembly and disassembly, overcomes the defects of the installation, support and design method of the traditional large-tower-diameter tower tray truss girder, and adopts a movable connection mode through the web members between each two parallel main girders, so that the truss girder is not limited by the 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 downcomer plates are connected through the hanging beam and then connected with the lower-layer liquid receiving plate to form an integral supporting component with better strength and rigidity, the truss beam is installed through the vertical downcomer plate and is connected with the downcomer plates in the multi-overflow tower tray to form a frame supporting beam structure similar to a fishbone shape, the requirements of strength and small deflection of the tower tray are met through finite element strength calculation, the number of truss beams of each layer of tower tray is greatly reduced, the size of the section of a girder of the truss beam is 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 invention and appended claims, and therefore, the scope of the invention is not limited to the disclosure of the embodiments and drawings.
Claims (10)
1. The utility model provides a little easy dismounting's of intensity high deflection large-scale tower tray structure which characterized in that: the structure comprises a tower body, a tower plate, a truss girder, a down-flow plate, a liquid receiving plate and a hanging beam structure, wherein the truss girder is formed by movably connecting and combining a plurality of layers of main beams through web members, the truss girder is vertically arranged with the plurality of down-flow plates, the tower plate is movably connected with the down-flow plate, the liquid receiving plate and each layer of main beam of the truss girder, the down-flow plate comprises a down-flow plate body, a down-flow plate connecting plate I and a down-flow plate connecting plate II, the down-flow plate connecting plates I are fixedly arranged on each layer of main beam of the truss girder at intervals, the down-flow plate connecting plates II are fixedly arranged on the tower body at intervals, and two ends of the down-flow plate body are respectively connected with the down-flow plate connecting plate I and the down-flow plate connecting plate II through bolts to form a fishbone type frame beam structure;
the bottoms of the down-flow plates on the edges are connected with a bottom liquid receiving disc through welding a plurality of positioning rib plates, the down-flow plates in the middle are symmetrically arranged, and a plurality of groups of hanging beam structures are arranged between the down-flow plates in the symmetrically arranged state; the gas phase circulation holes which are beneficial to the gas circulation at the two sides of the down-flow plate are formed on the down-flow plate at the position of each group of hanging beam structures; every group the hanging beam structure includes connecting rod one and connecting rod two, connecting rod one level spanes between the downcomer, two quadrature movable mounting of connecting rod are at connecting rod one middle part, form a hanging beam structure with connecting rod one, the welding of two lower part both sides of connecting rod has gusset one, gusset one is used for along being connected with the downcomer down, the welding of two bottom end portions of connecting rod has gusset two, receives liquid dish bolted connection through this gusset two and lower floor, forms a complete tower tray structure.
2. The large tray structure of claim 1, having high strength, high flexibility, small size, and easy assembly and disassembly, wherein: the truss girder comprises a plurality of layers of main girders, and the plurality of layers of main girders are vertically arranged in parallel at intervals in a manner of being vertical to the downcomer according to the distance between the 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; and the girder that is located the superiors is the back timber, and the girder that is located the intermediate position includes first girder subassembly and second girder subassembly, first girder subassembly and second girder subassembly set up along the vertical direction of tower body range in turn, first girder subassembly includes first girder, and second girder subassembly includes the second girder, and the girder that is located the lower floor is the floorbar, the floorbar both ends still system have with the hole of putting by of the bolt hole looks adaptation of welding on the support on the tower body, be connected the stable setting that realizes whole truss roof beam through bolt and support.
3. A large tray structure of high strength, low deflection, and easy assembly and disassembly according to claim 2 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 shaped steel beam, wherein the finished T-shaped beam, the finished I-shaped steel beam and the shaped steel beam are integrally formed; 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.
4. A large tray structure of high strength, low deflection and easy assembly and disassembly according to claim 3 wherein: the structure of girder is single-deck beam structure, has a plurality of connecting plates along the length direction welding of roof beam on girder surface central line.
5. A large tray structure of high strength, low deflection and easy assembly and disassembly according to claim 3 wherein: the girder is double-deck beam structure, and the seam department between the shaped steel of back-to-back welding of girder presss from both sides the dress and welds along the length direction of roof beam and has a plurality of connecting plates, and still welds the apron in the seam department that the girder does not weld the connecting plate.
6. A large tray structure of high strength, low deflection, and easy assembly and disassembly according to claim 2 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 profile steels, 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.
7. A large tray structure of high strength, low deflection, and easy assembly and disassembly according to claim 2 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.
8. A large tray structure of high strength, low deflection, and easy assembly and disassembly according to claim 1 wherein: the hanging beam structure spans between the two down-flow plates and is connected with the down-flow plates at two sides through bolts, and the bottom of the hanging beam structure is connected with the next layer of liquid receiving disc to form an integral supporting component; and a first connecting rod in the hanging beam structure is a square pipe or a round pipe with a flange plate, the flange plate is provided with a bolt hole, and a hole with the same pipe diameter and a matched bolt are also arranged at the position of the joint of the down-flow plate and the down-flow plate.
9. A large tray structure of high strength, low deflection, and easy assembly and disassembly according to claim 1 wherein: the tower tray plate is an angle steel tower tray plate, a float valve tower tray plate and a sieve plate tower tray plate; the liquid receiving plate is a flat liquid receiving plate or a concave liquid receiving plate, a gap exists between the down-flow plate and the upper surface of the liquid receiving plate, and bolt holes corresponding to the rib plates II are formed in the liquid receiving plate corresponding to the hanging beam structure formed by the connecting rods in the middle of the down-flow plate.
10. A large tray structure of high strength, low deflection, and easy assembly and disassembly according to claim 1 wherein: the upper end of the positioning rib plate is welded on the down-flow plate, the lower end of the positioning rib plate is welded on the liquid receiving disc on the next layer, the down-flow plate and the liquid receiving disc are integrated, and the positioning rib plate is an angle steel or a steel plate.
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