CN103212962A - Assembling method of finned tube heat exchanger - Google Patents
Assembling method of finned tube heat exchanger Download PDFInfo
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- CN103212962A CN103212962A CN2013101070882A CN201310107088A CN103212962A CN 103212962 A CN103212962 A CN 103212962A CN 2013101070882 A CN2013101070882 A CN 2013101070882A CN 201310107088 A CN201310107088 A CN 201310107088A CN 103212962 A CN103212962 A CN 103212962A
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- 238000005452 bending Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 15
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Abstract
The invention provides an assembling method of a finned tube heat exchanger. Firstly, integrally manufacturing a fin tube group, prepressing, manufacturing a tube plate by adopting a zigzag cutting method, assembling the fin tube group and the tube plate, and then welding an end socket and an inlet and an outlet of the fin tube group; welding the upper and lower parts of the tube plates with end face flanges respectively, and welding end enclosure protective housings on the front tube plate and the rear tube plate respectively; then two side plates are respectively arranged on two sides of the tube plate, and the side plates are connected with the tube plate and the end socket protective shell through welding; and welding the inlet and outlet manifolds with the inlet and outlet branch pipes, and then welding inlet and outlet pipelines and flanges of the heat exchanger to complete the assembly of the whole heat exchanger. By optimizing the assembly scheme of the heat exchanger components, the method has the advantages of less heat exchanger components, convenience in assembly, light weight and compact size, shortens the assembly working time and reduces the cost investment.
Description
Technical field
The present invention relates to technical field of heat exchange devices, relate in particular to the assemble method that is applied to a kind of finned tube exchanger.
Background technology
At present, in industries such as metallurgy, power, petrochemical industry, air-conditioning, for the enhanced heat exchange effect or reach the purpose that makes the heat exchanger high-efficiency compact, finned tube exchanger has obtained promotion and application widely.Heat exchanger is in design, manufacturing, use, guarantee the mutual seal isolation between shell side medium, tube side medium, the external environment condition medium three, under the prerequisite that guarantees the functional requirement of heat exchanger, the selection of the design of heat exchanger associated components, manufacturing, packaging technology to control whole heat exchanger cost, when shortening the heat exchanger worker, make things convenient for the heat exchanger on-site installation and maintenance to have very big effect.
Usually, finned tube exchanger mainly is made of finned tube group, tube sheet, shell and other associate members.During making, outer cover of heat exchanger and finned tube group are made respectively, and finned tube group and tube sheet assembling back integral body are put into the assembling that shell is finished whole heat exchanger.Simultaneously, at some large heat exchangers of metallurgy, power, petrochemical industry, for guaranteeing transportation and on-the-spot easy for installation, the compactedness and the weight of heat exchanging device are also had higher requirement.There is following shortcoming in the scheme that present finned tube exchanger is made shell and finned tube group respectively: (1) shell only plays the effect of isolating shell side medium and surrounding medium, support heat exchanger overall weight as the part of heat exchanger, but occupied the larger specific gravity of heat exchanger gross weight, optimized the shell design and have bigger potentiality aspect the heat exchanger loss of weight; (2) existence of shell makes the appearance and size of heat exchanger maximize, and makes the heat exchanger segment space only produce guide functions and not have the heat exchange effect, and the optimization of shell sizes can be so that heat exchanger be compacter, installing space is littler; (3) tube sheet is underused, present high-end finned tube exchanger tube sheet is generally stainless steel, material hardness, intensity are higher, and tube sheet only plays, and effect fixing, that support the finned tube group obviously also is nowhere near, and how utilizing tube sheet to greatest extent also is a direction of heat exchanger research; (4) heat exchanger component is more, makes troubles for manufacturing, assembling; (5) heat exchanger part parts design is unreasonable, makes troubles for assembling, installation.
To sum up, there is bigger optimization space in present finned tube exchanger, by optimizing the heat exchanger component number, optimizing the heat exchanger component design, make that heat exchanger forms that parts are changed on a small quantity, easy to assemblyization, materialization in light weight, compact dimensions aspect still have very big exploration space.
Summary of the invention
Technical problem to be solved by this invention is the deficiency at above-mentioned existence, provide a kind of simple in structure, under the prerequisite that guarantees the requirement of heat exchanger normal function, by optimizing heat exchanger component assembling scheme, make that heat exchanger forms that parts are changed on a small quantity, easy to assemblyization, materialization in light weight, compact dimensionsization, shorten and assemble man-hour, the finned tube exchanger assemble method that reduces cost and drop into.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of finned tube exchanger assemble method, this heat exchanger mainly comprise finned tube group, tube sheet, side plate, end face flange, import and export pipeline and collector thereof and arm, end socket containment vessel, end socket, and assembling process is as follows:
(1) at first with finned tube group integral manufacturing, suppress in advance, next adopts the zigzag cutting method to make tube sheet, and finned tube group and tube sheet are assembled, afterwards the import and export of end socket and finned tube group are welded, the arm that will import and export pipeline then is welded in end socket.Do not weld between finned tube group and the tube sheet, and rear portion finned tube containment vessel leaves the gap, can guarantee has enough extendable rooms after the finned tube temperature distortion;
(2) weld with the end face flange respectively the top and the bottom of tube sheet, and the front and back tube sheet is welded with the end socket containment vessel respectively, front head containment vessel one side and tube sheet welding, with end socket weld on one side, the rear head containment vessel then directly is welded on the tube sheet.The tube sheet both sides have two blocks of side plates respectively, and side plate and tube sheet and end socket containment vessel are by being welded together.Tube sheet, front and back end socket containment vessel, two blocks of side plates are by being welded to form an airtight cavity, and this cavity is isolated heat exchanger shell pass medium and surrounding medium, replace the original scheme that outer cover of heat exchanger is isolated shell side medium and surrounding medium of making separately.
(3) will import and export collector and weld with importing and exporting arm, welding heat exchanger is imported and exported pipeline and flange afterwards, finishes the assembling of whole heat exchanger.
In such scheme; this heat exchanger tube sheet adopts the zigzag tube sheet; comprise three parts on this sawtooth shape pipe plate structure: upper straight-plate, middle porous plate, lower straight-plate; the link position of wherein upper and lower straight plate and middle porous plate is within the welding position of end socket containment vessel and tube sheet; guarantee that this link position is within the coating of front and back end socket containment vessel, to strengthen tubesheet intensity.During blanking can with three parts respectively blanking also can put in order the plate blanking and be cut into three parts then, generally recommend to adopt blanking respectively to reduce the cutting workload.Middle porous plate is holed the back as required from being cut into some sawtooth pattern tube sheets perpendicular to length direction along centerline hole.
When sawtooth pattern tube sheet and finned tube are assembled, at first according to the porous plate cutting sequence will be wherein a sawtooth pattern tube sheet fix, then integral manufacturing, the finned tube suppressed are in advance put into sawtooth pattern tube sheet indentation, there, afterwards adjacent sawtooth pattern tube sheet is docked also spot welding with it and fix, place finned tube and sawtooth pattern tube sheet in turn until finishing all finned tubes assemblings.Treat with finned tube assembling join finish after, porous plate and last lower straight-plate are played the two-sided continuous seal weld of groove are connected into integral body.So far finish the assembling process of tube sheet and finned tube.
In such scheme, described end socket containment vessel is a steel plate bending structure, monoblock steel plate cutting during blanking, and bending and molding as required cuts out the rectangular area at last on the bending steel plate then.During assembling, weld with tube sheet respectively end socket containment vessel top, bottom, intermediate rectangular cutting zone and end socket welding, both sides and the welding of heat exchanger side plate.
Beneficial effect after the employing technique scheme is:
(1) amount of parts of composition heat exchanger is less, does not need to make separately outer cover of heat exchanger, and whole heat exchanger is in light weight, compact conformation, easy to assembly;
(2) the finned tube integral manufacturing is suppressed in advance, has avoided the highly difficult welding that produces in the finned tube assembling process, reduces the risk that may occur in the finned tube assembling process, has reduced welding capacity, has reduced and has made the assembling difficulty;
(3) end socket containment vessel unique design scheme makes itself and heat exchanger overall package simple, the material shape rule that cuts down, and size is bigger, can be used in addition, has increased the material service efficiency.Reduce design, manufacturing, assembling complexity, reduced the material use amount, when having shortened worker;
(4) tube sheet adopts unique zigzag structure, and tube sheet blanking has respectively reduced the cutting workload, helps making full use of existing irregular or small-size materials simultaneously, saves cost.Gullet plate after the cutting has less length-width ratio, and gullet plate has stronger counter-bending deformability.
Description of drawings
Fig. 1 is the present invention program's schematic diagram;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the A-A view of Fig. 1;
Fig. 4 is original zigzag tube sheet cutting scheme;
The zigzag tube sheet cutting scheme that Fig. 5 adopts for the present invention;
The end socket containment vessel scheme that Fig. 6 adopts for the present invention;
Fig. 7 is end socket containment vessel of the present invention and heat exchanger assembling schematic diagram;
Fig. 8 is original end socket containment vessel scheme;
Fig. 9 is original end socket containment vessel and heat exchanger assembling schematic diagram.
Among the figure: 1-shell side inlet pipeline, 2-inlet header, 3-entrance branch; 4-import end socket, 5-front head containment vessel, 6-lower surface flange, 8-upper surface flange; 7-rear head containment vessel, 9-back tube sheet, 12-front tube sheet, 10-side plate; 11-finned tube group, 13-exports end socket, 14-outlet stool; the 15-outlet header; 16-shell side outlet conduit, 17-upper straight-plate, 18-porous plate, 19-lower straight-plate.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention is further illustrated:
Shown in Figure 3 as Fig. 1 Fig. 2, this heat exchanger mainly comprises: shell side inlet pipeline 1, shell side outlet conduit 16, inlet header 2, outlet header 15, entrance branch 3, outlet stool 14, import end socket 4, outlet end socket 13, front head containment vessel 5, rear head containment vessel 7, lower surface flange 6, upper surface flange 8, finned tube group 11, back tube sheet 9, front tube sheet 12, side plate 10.Back tube sheet 9 and front tube sheet 12 are stainless steel, and the zigzag structure that is designed to.Front head containment vessel 5 is a steel plate bending structure, cuts out a rectangular area on the steel plate, and front head containment vessel 5 one ends are welded on the front tube sheet 12, intermediate rectangular cutting zone and import end socket 4,13 welding of outlet end socket.
Assembling process is as follows:
(1) at first with finned tube group 11 integral manufacturing, suppress in advance, next adopts the zigzag cutting method to make back tube sheet 9 and front tube sheet 12, and finned tube group 11 and back tube sheet 9, front tube sheet 12 assembled, afterwards the import and export of import end socket 4, outlet end socket 13 and finned tube group 11 are welded, then entrance branch 3 and outlet stool 14 are welded in import end socket 4 and outlet end socket 13 respectively; Do not weld between finned tube group 11 and back tube sheet 9, the front tube sheet 12, and rear head containment vessel 7 leaves the gap, can guarantee has enough free extendable rooms after 11 temperature distortions of finned tube group;
(2) top and the bottom of back tube sheet 9, front tube sheet 12 are welded with upper surface flange 8, lower surface flange 6 respectively; on back tube sheet 9 and front tube sheet 12, weld the end socket containment vessel respectively then; front head containment vessel 5 welds with front tube sheet 12 on one side; with the end socket welding, 7 of rear head containment vessels directly are welded on the back tube sheet 9 on one side.The tube sheet both sides have two blocks of side plates 10 respectively, and side plate 10 and tube sheet and end socket containment vessel are by being welded together.Tube sheet, front and back end socket containment vessel, two blocks of side plates are by being welded to form an airtight cavity before and after making; this cavity is isolated heat exchanger shell pass medium and surrounding medium, replaces the original scheme that outer cover of heat exchanger is isolated shell side medium and surrounding medium of making separately.
(3) inlet header 2, outlet header 15 are welded with entrance branch 3, outlet stool 14 respectively, weld shell side inlet pipeline 1, shell side outlet conduit 16 and flange afterwards, finish the assembling of whole heat exchanger.
In the present embodiment; adopt the zigzag tube sheet; comprise three parts on this sawtooth shape pipe plate structure: upper straight-plate 17, middle porous plate 18, lower straight-plate 19; wherein upper straight-plate 17, lower straight-plate 19 are within the welding position of end socket containment vessel and tube sheet with the link position of porous plate 18; guarantee that this link position is within the coating of front and back end socket containment vessel, to strengthen tubesheet intensity.During blanking the blanking of three parts difference is cut workload to reduce.Porous plate 18 is holed the back as required from being cut into some sawtooth pattern tube sheets perpendicular to length direction along centerline hole.
When sawtooth pattern tube sheet and finned tube are assembled, at first according to porous plate 18 cutting sequences will be wherein a sawtooth pattern tube sheet fix, then integral manufacturing, the finned tube suppressed are in advance put into sawtooth pattern tube sheet indentation, there, afterwards adjacent sawtooth pattern tube sheet is docked also spot welding with it and fix, place finned tube and sawtooth pattern tube sheet in turn until finishing all finned tubes assemblings.Treat with finned tube assembling join finish after, porous plate 18 and last lower straight-plate are played the two-sided continuous seal weld of groove are connected into integral body.
In the present embodiment, described front head containment vessel 5 is a steel plate bending structure, monoblock steel plate cutting during blanking, and bending and molding as required cuts out the rectangular area at last on the bending steel plate then.During assembling, weld with tube sheet respectively end socket containment vessel top, bottom, intermediate rectangular cutting zone and end socket welding, both sides and side plate 10 welding.
Embodiment of the invention main feature is:
(1) heat exchanger does not need to make shell separately, makes full use of tube sheet.Common heat exchanger is generally all made shell separately at present, after finishing, finned tube group and tube sheet assembling put into shell, shell only plays isolates shell side medium and surrounding medium, support the effect of heat exchanger overall weight, but occupied the larger specific gravity of heat exchanger gross weight, the existence of shell makes the weight of heat exchanger, appearance and size, material consumption all has increase in various degree, the development trend of this and heat exchanger: building block is changed on a small quantity, easy to assemblyization, materialization in light weight, the contradiction that the compact dimensions existence is certain, mentality of designing of the present invention has met this trend preferably;
(2) Du Te sawtooth shape pipe plate structure makes that finned tube can integral manufacturing, suppresses in advance.In order to guarantee finned tube energy integral manufacturing, suppress in advance, general zigzag tube sheet scheme (Fig. 4) is at present: tube sheet is put in order the plate blanking, and boring as requested is then directly from along centerline hole tube sheet being cut into some serration plates perpendicular to length direction.This method integral cutting workload is big.And because repeatedly cutting is relatively poor with the tubesheet intensity after the finned tube assembling, generally by around weld gusset method increase its intensity, increased material usage and welding capacity.Gullet plate after the cutting re-assemblies back plate face glacing flatness and can't guarantee, the heat exchanger back tube sheet that comes into operation easily produces flexural deformation, influences heat exchanger result of use and life-span.Comprise three parts on this heat exchanger zigzag tube sheet (Fig. 5) structure: upper straight-plate, middle porous plate, lower straight-plate, three parts blanking respectively during blanking, middle porous plate is holed the back as required from being cut into some serration plates perpendicular to length direction along centerline hole, after adopting this heat exchanger tube sheet design (Fig. 5), tube sheet integral cutting workload reduces to some extent, tubesheet intensity after the assembling can guarantee, do not need outer stiffened panel, not only elegant in appearance but also reduced material use amount and welding job amount, gullet plate after the cutting has bigger length-width ratio, gullet plate has stronger counter-bending deformability, tube sheet flatness after the assembling is easy to guarantee, tube sheet is stressed evenly, and is not yielding in the use;
(3) end socket containment vessel special structure design is in the time of can reducing material use amount, assembling welding capacity, worker.This exchanger head containment vessel (Fig. 6) is a steel plate bending structure, monoblock steel plate cutting during blanking, and bending as required then cuts out the rectangular area at last on the bending steel plate.During assembling, weld with tube sheet respectively containment vessel top, bottom, intermediate rectangular cutting zone and end socket welding, both sides and heat exchanger side plate welding (Fig. 7).Common containment vessel design is to bore some circular holes (Fig. 8) on the steel plate after the bending at present, and the containment vessel after the boring is fixed (Fig. 9) with tube sheet, each arm, side plate welding respectively.The containment vessel blanking amount that this scheme needs is bigger, and the cutting drilling operating is loaded down with trivial details and labor content is bigger, and containment vessel processing clout size is less, and recycling value is little.Simultaneously since in this scheme containment vessel carry out the boxing welding with collector, it is less to weld the space, welding process requirement is higher, the welding job amount is big, difficulty is high.Containment vessel blanking amount behind employing the present invention obviously reduces, and the containment vessel cutting zone is two rectangular areas, and the cutting workload is little, difficulty is low, and containment vessel is processed the clout regular shape, size is bigger, but value is higher.After the invention process, containment vessel directly with the end socket welding, no longer, do not need to consider the welding spatial constraints substantially with the collector welding, it is low to weld difficulty, the welding job amount is less relatively, the clout regular shape and the size that cut down are bigger, recycling value is higher.
The course of work of this heat exchanger is as follows: it is moving that shell side medium and tube side medium are cross-current.The shell side medium is imported and exported two end face flanges that are respectively heat exchanger, flows outside finned tube, participates in heat exchange.The tube side medium is after the tube side inlet enters, at first enter collector, some arms (can guarantee the medium distributed uniform) through linking to each other with collector enter in the end socket afterwards, enter in the finned tube through two rows finned tube inlet then, carry out heat exchange by finned tube tube wall and outer fin of pipe and shell side medium, the arrangement of finned tube on tube sheet is staggered arrange (Fig. 3), can guarantee all finned tube uniform heat exchanges, tube side medium after the heat exchange flows out through the tube side outlet, the structure setting of tube side outlet is identical with the tube side entrance, only exists MEDIA FLOW to difference.
The whole finned tube exchanger of the embodiment of the invention has reached that building block is changed on a small quantity, the requirement of easy to assemblyization, materialization in light weight, compact dimensionsization.Reduced the heat exchanger materials use amount, when having shortened worker, favourable greatly to the reduction that the cost of whole heat exchanger drops into.
Protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion and do not depart from the scope of the present invention and spirit the present invention.If these changes and distortion belong in the scope of claim of the present invention and equivalent technologies thereof, then the intent of the present invention also comprises these changes and is out of shape interior.
Claims (4)
1. finned tube exchanger assemble method, this heat exchanger mainly comprise finned tube group, tube sheet, side plate, end face flange, import and export pipeline and collector thereof and arm, end socket containment vessel, end socket, and assembling process is as follows:
At first with finned tube group integral manufacturing, suppress in advance, next adopts the zigzag cutting method to make tube sheet, and finned tube group and tube sheet are assembled, afterwards the import and export of end socket and finned tube group are welded, the arm that will import and export pipeline then is welded in end socket; Do not weld between finned tube group and the tube sheet, and rear portion finned tube containment vessel leaves the gap, can guarantee has enough extendable rooms after the finned tube temperature distortion;
The top and the bottom of tube sheet are welded with the end face flange respectively, weld the end socket containment vessel respectively at the front and back tube sheet simultaneously, front head containment vessel one side and tube sheet welding, with end socket weld on one side, the rear head containment vessel then directly is welded on the tube sheet;
Two blocks of side plates are set respectively in the tube sheet both sides then, with side plate and tube sheet and end socket containment vessel by being welded together, make tube sheet, front and back end socket containment vessel, two blocks of side plates by forming an airtight cavity, this cavity is isolated heat exchanger shell pass medium and surrounding medium;
To import and export collector and weld with importing and exporting arm, welding heat exchanger is imported and exported pipeline and flange afterwards, finishes the assembling of whole heat exchanger.
2. finned tube exchanger assemble method as claimed in claim 1, it is characterized in that: described zigzag cutting method is made tube sheet, its tube plate structure comprises three parts: upper straight-plate, middle porous plate, lower straight-plate, during blanking three parts are distinguished blanking, with middle porous plate according to after the zigzag cutting route boring, from being cut into some sawtooth pattern tube sheets along centerline hole perpendicular to length direction; The link position of wherein upper and lower straight plate and middle porous plate is within the welding position of end socket containment vessel and tube sheet, guarantees that this link position is within the coating of front and back end socket containment vessel, to strengthen tubesheet intensity.
3. finned tube exchanger assemble method as claimed in claim 1 or 2, it is characterized in that: when described tube sheet and finned tube are assembled, at first according to the porous plate cutting sequence will be wherein a sawtooth pattern tube sheet fix, then with integral manufacturing, the finned tube of suppressing is in advance put into sawtooth pattern tube sheet indentation, there, afterwards adjacent sawtooth pattern tube sheet being docked also spot welding with it fixes, place finned tube and sawtooth pattern tube sheet in turn until finishing all finned tube assemblings, treat with finned tube assembling join finish after, porous plate and last lower straight-plate are played the two-sided continuous seal weld of groove are connected into integral body.
4. finned tube exchanger assemble method as claimed in claim 1, it is characterized in that: when described end socket containment vessel is made, adopt a steel plate bending structure, monoblock steel plate cutting during blanking, carry out bending and molding then, on the bending steel plate, cut out the rectangular area at last; During assembling, weld with tube sheet respectively end socket containment vessel top, bottom, intermediate rectangular cutting zone and end socket welding, both sides and side plate welding.
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| CN2013101070882A CN103212962A (en) | 2013-03-29 | 2013-03-29 | Assembling method of finned tube heat exchanger |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4552292A (en) * | 1982-11-12 | 1985-11-12 | General Electric Company | Heat exchanger |
| JPS61193732A (en) * | 1985-02-20 | 1986-08-28 | Matsushita Refrig Co | Production of heat exchanger |
| CN2625833Y (en) * | 2003-05-13 | 2004-07-14 | 华南理工大学 | Spiral baffle pore plate supported rhombic finned tube bundle heat exchanger |
| CN201772438U (en) * | 2010-03-19 | 2011-03-23 | 夏嘉琪 | Spiral finned tube type boiler waste heat recycling device |
| CN102601584A (en) * | 2012-03-21 | 2012-07-25 | 中冶南方(武汉)威仕工业炉有限公司 | Assembling method of end socket protective shell of finned tube exchanger |
| CN102689166A (en) * | 2012-05-30 | 2012-09-26 | 中冶南方(武汉)威仕工业炉有限公司 | Method for manufacturing saw-toothed tube plates used for finned tube heat exchanger |
| CN102997720A (en) * | 2012-12-12 | 2013-03-27 | 中冶南方(武汉)威仕工业炉有限公司 | Shell-and-tube heat exchanger with free expanded tube pass |
-
2013
- 2013-03-29 CN CN2013101070882A patent/CN103212962A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4552292A (en) * | 1982-11-12 | 1985-11-12 | General Electric Company | Heat exchanger |
| JPS61193732A (en) * | 1985-02-20 | 1986-08-28 | Matsushita Refrig Co | Production of heat exchanger |
| CN2625833Y (en) * | 2003-05-13 | 2004-07-14 | 华南理工大学 | Spiral baffle pore plate supported rhombic finned tube bundle heat exchanger |
| CN201772438U (en) * | 2010-03-19 | 2011-03-23 | 夏嘉琪 | Spiral finned tube type boiler waste heat recycling device |
| CN102601584A (en) * | 2012-03-21 | 2012-07-25 | 中冶南方(武汉)威仕工业炉有限公司 | Assembling method of end socket protective shell of finned tube exchanger |
| CN102689166A (en) * | 2012-05-30 | 2012-09-26 | 中冶南方(武汉)威仕工业炉有限公司 | Method for manufacturing saw-toothed tube plates used for finned tube heat exchanger |
| CN102997720A (en) * | 2012-12-12 | 2013-03-27 | 中冶南方(武汉)威仕工业炉有限公司 | Shell-and-tube heat exchanger with free expanded tube pass |
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Application publication date: 20130724 |