CN113001101B - Vertical assembly process of industrial heat exchanger and installation device and application thereof - Google Patents
Vertical assembly process of industrial heat exchanger and installation device and application thereof Download PDFInfo
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- CN113001101B CN113001101B CN202110383039.6A CN202110383039A CN113001101B CN 113001101 B CN113001101 B CN 113001101B CN 202110383039 A CN202110383039 A CN 202110383039A CN 113001101 B CN113001101 B CN 113001101B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The disclosure relates to the technical field of thermal engineering, and particularly provides a vertical assembly process of an industrial heat exchanger, and an installation device and application thereof. The process is characterized in that the heat exchange tube is arranged perpendicular to the ground in a penetrating way, and specifically comprises the following steps: 1) Manufacturing a bottom tube plate; 2) Baffle assembly: drilling holes on all the baffle plates, hoisting and positioning, and enabling holes corresponding to any two baffle plates to be concentric; 3) And (3) penetrating and installing the heat exchange tube: when the hoisting protection cage is used for protecting the heat exchange tubes to penetrate through holes in the baffle plates, firstly, the heat exchange tubes of the outer ring are penetrated and assembled, and the penetration and assembly of the rest heat exchange tubes are sequentially and symmetrically completed in a shape like a Chinese character 'mi'; 4) And (3) assembling a shell: the shaft type lifting lug is welded on the shell, the lifting lug bears the weight of the whole heat exchanger, the shell is lifted, and the length of the shell can ensure that the heat exchange tube exposes out of the tube surfaces on two sides; 5) Assembling an upper tube plate: and assembling the upper tube plate and the shell, performing positioning welding, lying the shell after assembling, and sealing the upper tube plate and the shell. The problem of horizontal equipment leads to the heat exchange tube to cross the in-process packaging efficiency low is solved.
Description
Technical Field
The disclosure relates to the technical field of thermal engineering, and particularly provides a vertical assembly process of an industrial heat exchanger, and an installation device and application thereof.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In chemical production, with the improvement of the productivity of the device, the energy consumption condition of the device is comprehensively considered, and a part of large-diameter heat exchanger needs to be manufactured, wherein the assembly of the tube bundle is a key process in the manufacture of the heat exchanger, in the traditional heat exchanger assembly process, the tube bundle assembly generally adopts a horizontal assembly method, namely, the tube plate and the baffle plate are vertical to the ground, and the heat exchange tubes transversely penetrate into the tube bundle. However, with the increase of equipment specifications, the defects caused by the horizontal assembly of the tube bundles are more and more obvious, on one hand, due to the increase of the specifications of the heat exchangers, the weight of a single heat exchanger is increased, the diameters of the tube plates and the baffle plates are too large to be effectively fixed, great difficulty is caused to the wearing and the installation of personnel, and the labor intensity is high; on the other hand, no supporting point exists during hoisting, and the shell and the tube bundle are difficult to wear due to sagging of the two ends of the heat exchange tube in the middle of hoisting, so that great safety risk is brought.
In the prior art, a vertical sleeving manner of a heat exchanger exists, however, the inventor finds that after the heat exchange tube and the baffle plate are transversely assembled, the tube bundle assembly and the heat exchanger shell are vertically sleeved, the vertical sleeving manner is basically horizontal, and the horizontal assembling and the vertical sleeving are converted back and forth, so that the maintenance of the tube bundle assembly is not facilitated.
Disclosure of Invention
The horizontal type heat exchanger is mainly used for assembling the heat exchanger, particularly for assembling the heat exchange tube and the baffle plate, and the horizontal type heat exchange tube is difficult to penetrate and assemble due to sagging of two ends in the transverse process of the heat exchange tube, so that the problems of low assembling efficiency and high safety risk are solved.
The invention provides a vertical assembly process of an industrial heat exchanger, and an installation device and application thereof, and the method solves the problem that horizontal assembly of a large-diameter heat exchanger tube bundle is difficult, greatly reduces the labor intensity of heat exchange tube penetrating and installing, improves the assembly efficiency of the large-diameter tube bundle, and shortens the equipment manufacturing period.
In one or some embodiments of the present disclosure, a vertical assembly process for an industrial heat exchanger is provided, in which a heat exchange tube is installed perpendicular to the ground, and the method specifically includes the following steps:
1) Manufacturing a bottom tube plate;
2) Baffle assembly: drilling holes on all the baffle plates, hoisting and positioning, and enabling holes corresponding to any two baffle plates to be concentric;
3) And (3) penetrating and installing the heat exchange tube: when the hoisting protection cage is used for protecting the heat exchange tubes to penetrate through holes in the baffle plates, firstly, the heat exchange tubes of the outer ring are penetrated and assembled, and the penetration and assembly of the rest heat exchange tubes are sequentially and symmetrically completed in a shape like a Chinese character 'mi';
4) And (3) assembling a shell: the shaft type lifting lug is welded on the shell, the lifting lug bears the weight of the whole heat exchanger, the shell is lifted, and the length of the shell can ensure that the heat exchange tube exposes out of the tube surfaces on two sides;
5) Assembling an upper tube plate: and assembling the upper tube plate and the shell, performing positioning welding, lying the shell after assembling, and sealing the upper tube plate and the shell.
In one or some embodiments of the disclosure, a mounting device for implementing the vertical assembly process of the industrial heat exchanger according to the claims is provided, and the mounting device comprises a travelling crane, a hoisting cage and a welding device.
In one or some embodiments of the present disclosure, an industrial heat exchanger is provided after the industrial heat exchanger vertical assembly process is installed.
In one or some embodiments of the present disclosure, there is provided the use of the above-described industrial heat exchanger vertical assembly process in the rapid assembly of horizontal heat exchangers.
One or some of the above technical solutions have the following advantages or beneficial effects:
1) The heat exchange tube penetrating and assembling mode is improved from traditional horizontal assembling to vertical assembling, the safety risk of fixing large-diameter baffle plates and tube plates is avoided, the labor intensity of heat exchange tube penetrating and assembling is greatly reduced, and the tube bundle assembling efficiency is improved by more than 1 time.
2) The heat exchange tube lifting protection cage is reasonably manufactured, the heat exchange tube is vertically lifted to the upper part of the baffle plate by using the driving protection cage, a person takes out the heat exchange tube from the inside of the protection cage and wears the heat exchange tube from top to bottom in sequence, the heat exchange tube is transmitted from the bottom to the top manually, the labor intensity of wearing the heat exchange tube is reduced, and the efficiency is improved by more than 20% again on the basis of original wearing.
3) The lifting cage and gravity are matched to control the passing direction of the heat exchange tube, namely the cage controls the passing direction of the heat exchange tube in the early stage of the passing of the heat exchange tube, and the gravity and the baffle plate control the passing direction in the later stage. The method comprises the following steps: the diameter of the lifting protection cage is slightly larger than that of the heat exchange tube, but the diameter of the lifting protection cage is smaller than the distance between any two holes on the baffle plate, the lifting protection cage limits the tail of the heat exchange tube in the penetrating process of the heat exchange tube, so that the heat exchange tube can not penetrate wrong holes due to the change of the tail direction in the downward process of the heat exchange tube penetrating the baffle plate, the heat exchange tube in the protection cage is shortened along with the increase of the penetrating distance of the heat exchange tube, the lifting protection cage does not limit the tail of the heat exchange tube any more, but the gravity direction of the heat exchange tube is downward, the weight of the heat exchange tube at the lower part is larger, and the gravity and the baffle plate cooperatively control the penetrating direction of the heat exchange tube. The whole process has few parts needing manual operation, and can greatly improve the installation efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and together with the description serve to explain the disclosure, and do not constitute an undue limitation on the disclosure.
FIG. 1 is a schematic diagram showing the maintenance of the heat exchange tube of example 1 in a cage.
Fig. 2 is a diagram of the heat exchanger mounting end product of example 1.
Wherein: 1. a bottom steel plate; 2. a bottom tube sheet; 3. a baffle plate; 4. a heat exchange tube; 5. a protective cage; 6. and (5) driving.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The horizontal type heat exchanger is mainly used for assembling the heat exchanger, particularly for assembling the heat exchange tube and the baffle plate, and the horizontal type heat exchange tube is difficult to penetrate and assemble due to sagging of two ends in the transverse process of the heat exchange tube, so that the problems of low assembling efficiency and high safety risk are solved.
The industrial heat exchanger disclosed by the disclosure comprises a large-diameter heat exchanger with DN more than 5000 mm.
In one or some embodiments of the present disclosure, a vertical assembly process for an industrial heat exchanger is provided, in which a heat exchange tube is installed perpendicular to the ground, and the method specifically includes the following steps:
2) Manufacturing a bottom tube plate;
2) Baffle assembly: drilling holes on all the baffle plates, hoisting and positioning, and enabling holes corresponding to any two baffle plates to be concentric;
3) And (3) penetrating and installing the heat exchange tube: when the hoisting protection cage is used for protecting the heat exchange tubes to penetrate through holes in the baffle plates, firstly, the heat exchange tubes of the outer ring are penetrated and assembled, and the penetration and assembly of the rest heat exchange tubes are sequentially and symmetrically completed in a shape like a Chinese character 'mi';
4) And (3) assembling a shell: the shaft type lifting lug is welded on the shell, the lifting lug bears the weight of the whole heat exchanger, the shell is lifted, and the length of the shell can ensure that the heat exchange tube exposes out of the tube surfaces on two sides;
5) Assembling an upper tube plate: and assembling the upper tube plate and the shell, performing positioning welding, lying the shell after assembling, and sealing the upper tube plate and the shell.
The heat exchange tube lifting protection cage is reasonably manufactured, the diameter of the lifting protection cage is slightly larger than that of the heat exchange tube, but the diameter of the lifting protection cage is smaller than the distance between any two holes on the baffle plate, the lifting protection cage limits the tail of the heat exchange tube in the penetrating process of the heat exchange tube, so that the heat exchange tube cannot penetrate wrong holes due to the change of the tail direction in the downward penetrating process of the baffle plate, the penetrating distance of the heat exchange tube is increased along with the change of the tail direction, the heat exchange tube in the protection cage is shortened, the lifting protection cage does not limit the tail of the heat exchange tube any more, but the weight of the heat exchange tube at the lower part is larger due to the downward gravity direction of the heat exchange tube, and the gravity and the baffle plate cooperatively control the penetrating direction of the heat exchange tube. The passing direction of the heat exchange tube is controlled by the protection cage at the earlier stage of the passing of the heat exchange tube, and the passing direction is controlled by the gravity and the baffle plate at the later stage. The whole process has few parts needing manual operation, and can greatly improve the installation efficiency.
Preferably, in the step 1), 4I-steel plates are assembled at the bottom of the steel plate to form a cross support for supporting the bottom tube plate and the whole tube bundle;
preferably, the I-steel model is 16# to 20#
Preferably, the bottom tube plate material is a steel plate with delta 24-delta 30 mm;
preferably, the diameter of the steel plate is 150-250 mm larger than the outer diameter of the lower tube plate;
preferably, the steel plate is 100-200mm away from the bottom tube plate,
preferably, 20-24 support plates are welded outside the bottom tube plate at the upper part of the steel plate, and the thickness of the support plates is 16-20 mm.
Because this disclosure is vertical installation technology, in the installation, the bottom atress is great, consequently needs to support with the steel sheet at the bottom tube sheet, because the main heat transfer part of heat exchanger is inside, consequently the bottom steel sheet does not influence the function of heat exchanger.
Preferably, in the step 2), all baffle plates after drilling are stacked on the bottom tube plate, and are opposite to the tube plate holes, the concentricity is checked one by one, the lower tube plate is placed on the bottom tube plate, hoisting and positioning are carried out sequentially according to the interval between the baffle plates from bottom to top,
preferably, the concentricity is required to be less than or equal to 0.5mm, otherwise, the adjustment is carried out;
preferably, when in hoisting and positioning, the space is fixed by using channel steel respectively, the positioning size deviation of the baffle plate is less than or equal to 2mm, and the overall flatness deviation is less than or equal to 2mm. The baffle plate assembly device utilizes the channel steel to fix the distance, the positioning precision of the integral penetrating pull rod and the distance pipe is improved compared with that of the previous layer-by-layer penetrating positioning, the concentricity deviation of the baffle plate hole is reduced, and the penetrating difficulty of the heat exchange pipe is reduced.
Preferably, in the step 3), the heat exchange tube is penetrated and installed in a protection cage on the ground, and then the heat exchange tube is vertically hung to the upper part of the baffle plate by using a driving protection cage, and the heat exchange tube is sequentially penetrated and installed with the baffle plate from top to bottom;
preferably, the steel channels and the flat steel are used for manufacturing the heat exchange tube lifting protection cage, the length of the protection cage is 100-200mm longer than that of the heat exchange tube, the diameter DN of the protection cage is 400-600mm, and two lifting lugs are arranged;
preferably, in the penetrating and installing process, firstly, the tube bundle structure is fixed within the 1000mm range of the outer ring, and the penetrating and installing of the rest heat exchange tubes are completed in a meter-shaped symmetry mode sequentially.
Preferably, in step 4), two shaft type lifting lugs are symmetrically welded at the upper part of the shell respectively, the type of the lifting lugs can bear the weight of the whole tube bundle, and the shell is integrally sleeved on the tube bundle by using a crane;
preferably, the concentricity of the shell and the tube bundle is less than or equal to 5mm;
preferably, the assembly clearance between the shell and the tube plate is 4-6 mm;
preferably, the overall size of the shell is 5-10 mm shorter than the heat exchange tube.
Preferably, in the step 5), the upper tube plate is assembled with the shell, according to the tube hole distribution, an octagonal positioning method is adopted, namely, the tube is thrown from the bottom part to the upper tube plate,
preferably, the positioning quantity is not less than 10 percent of the total number of the heat exchange tubes, and the tube plate and the shell are subjected to positioning welding after positioning;
preferably, argon arc welding is adopted for backing welding, carbon dioxide gas shielded welding is used as a filling layer, and cover layer welding is carried out after horizontal welding.
Preferably, the welding line priming layer in the step 5) is welded twice, the welding current is 90-150A, the arc voltage is 10-12V, and the welding speed is 6-8cm/min; the welding current of the weld filling layer is 100-180A, the arc voltage is 22-33V, and the welding speed is 15-25cm/min; the welding current of the weld joint cover layer is 480-550A, the arc voltage is 30-35V, and the welding speed is 25-35cm/min.
In one or some embodiments of the disclosure, a mounting device for implementing the vertical assembly process of the industrial heat exchanger according to the claims is provided, and the mounting device comprises a travelling crane, a hoisting cage and a welding device.
In one or some embodiments of the present disclosure, an industrial heat exchanger is provided after the industrial heat exchanger vertical assembly process is installed.
In one or some embodiments of the present disclosure, there is provided the use of the above-described industrial heat exchanger vertical assembly process in the rapid assembly of horizontal heat exchangers.
Example 1
The embodiment provides a vertical assembly process of an industrial heat exchanger, which comprises the following steps:
(1) And (3) manufacturing a bottom tube plate 2: the delta 24mm steel plate is used as a support plate for erecting the tube bundle, namely a bottom steel plate 1, the diameter of the bottom steel plate 1 is 5700mm, 4 20# I-steel plates are assembled into a cross support for the bottom steel plate, the gap between the bottom steel plate 1 and the bottom tube plate 2 is 200mm, 20 support plates are welded outside the tube plate at the upper part of the bottom tube plate 2, and the thickness of each support plate is 16mm and used for supporting the tube plate and the whole tube bundle. .
(2) Baffle 3 assembly: stacking all baffle plates 3 after drilling, centering with the holes of the tube plate, and checking concentricity of about 0.5mm from hole to hole; all baffle plates 3 are placed on the bottom tube plate 2, hoisting and positioning are sequentially carried out according to the intervals of the baffle plates 3 from bottom to top, the intervals are fixed by utilizing channel steel respectively, the positioning size deviation of the baffle plates 3 is 2mm, and the overall flatness deviation is 2mm. The pull rod is penetrated from the top to the bottom, and the distance tube between the baffle plates 3 is positioned layer by layer.
(3) The heat exchange tube 4 is installed in a penetrating way: the heat exchange tube lifting protection cage 5 is made of channel steel and flat steel, the length of the protection cage 5 grows out of the heat exchange tube by 100mm, the diameter DN of the protection cage is 400mm, 80 heat exchange tubes can be lifted at one time, two lifting lugs are arranged, the heat exchange tubes are installed on the ground in a penetrating mode like the protection cage, then the heat exchange tubes are vertically lifted to the upper portion of a baffle plate by using the driving protection cage 5, personnel take out the heat exchange tubes 4 from the protection cage 5 to sequentially penetrate the heat exchange tubes 4 from top to bottom, firstly, the heat exchange tubes are penetrated in the range of 1000mm of an outer ring, the tube bundle structure is fixed, and the penetrating of the remaining heat exchange tubes 4 is sequentially symmetrically completed in a shape of a Chinese character 'mi'.
(4) And (3) assembling a shell: two shaft type lifting lugs are symmetrically welded on the upper part of the shell respectively, the lifting lug type can bear the weight of the whole tube bundle, the subsequent shell can be prone, the shell is integrally sleeved on the tube bundle by using a travelling crane, the concentricity of the shell and the tube bundle is about 4mm, the assembly clearance between the shell and the tube plate is 4mm, the overall size of the shell is 10mm shorter than that of the heat exchange tube, and the heat exchange tube can be ensured to expose the tube faces on two sides.
(5) Assembling an upper tube plate: the upper tube plate and the shell are assembled, the tube is thrown from the bottom to the upper tube plate by adopting an octagonal positioning method according to tube hole distribution, the positioning number is 400 heat exchange tubes, positioning welding of the tube plate and the shell is carried out after positioning, backing welding is carried out by adopting argon arc welding, carbon dioxide gas shielded welding is used as a filling layer, and covering layer welding is carried out after horizontal.
In the step (5), the weld backing layer is welded twice, the welding current is 100A, the arc voltage is 10, and the welding speed is 6cm/min; the welding current of the welding seam filling layer is 150A, the arc voltage is 23V, and the welding speed is 18cm/min; the weld cap layer was welded at a welding current 530A, arc voltage 33V, and welding speed 28cm/min.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the claims, which follow, as defined in the claims.
Claims (7)
1. The vertical assembly process of the industrial heat exchanger is characterized in that the heat exchange tube is penetrated and assembled perpendicular to the ground, and specifically comprises the following steps:
1) Manufacturing a bottom tube plate;
2) Baffle assembly: drilling holes on all the baffle plates, hoisting and positioning, and enabling holes corresponding to any two baffle plates to be concentric; in the step 2), all baffle plates after drilling are stacked on the bottom tube plate and are opposite to the tube plate holes, the concentricity is checked one by one, the lower tube plate is placed on the bottom tube plate, the lifting and the positioning are sequentially carried out according to the interval between the baffle plates from bottom to top,
the concentricity is required to be less than or equal to 0.5mm, otherwise, the adjustment is carried out;
when in hoisting and positioning, the space is fixed by using channel steel respectively, the positioning size deviation of the baffle plate is less than or equal to 2mm, and the overall flatness deviation is less than or equal to 2mm;
3) And (3) penetrating and installing the heat exchange tube: when the hoisting protection cage is used for protecting the heat exchange tubes to penetrate through holes in the baffle plates, firstly, the heat exchange tubes of the outer ring are penetrated and assembled, and the penetration and assembly of the rest heat exchange tubes are sequentially and symmetrically completed in a shape like a Chinese character 'mi'; in the step 3), the heat exchange tube is arranged in the protective cage in a penetrating way on the ground, then the heat exchange tube is vertically hung to the upper part of the baffle plate by using the traveling crane protective cage, and the baffle plate is arranged in a penetrating way of the heat exchange tube from top to bottom in sequence;
the heat exchange tube is manufactured by using channel steel and flat steel to hoist the protection cage, the length of the protection cage is 100-200mm longer than that of the heat exchange tube, the diameter DN of the protection cage is 400-600mm, and two lifting lugs are arranged; the diameter of the hoisting protection cage is slightly larger than that of the heat exchange tube, but the diameter of the hoisting protection cage is smaller than the distance between any two holes on the baffle plate;
in the penetrating and assembling process, firstly, penetrating and assembling the outer ring within the range of 1000mm, fixing the tube bundle structure, and sequentially symmetrically finishing the penetrating and assembling of the rest heat exchange tubes in a shape of Chinese character 'mi';
in the process of penetrating and assembling the heat exchange tube, the lifting protection cage and gravity are matched to control the penetrating direction of the heat exchange tube, the protection cage controls the penetrating direction of the heat exchange tube in the early stage of penetrating the heat exchange tube, and the gravity and the baffle plate control the penetrating direction in the later stage; the hoisting cage limits the tail part of the heat exchange tube, so that the heat exchange tube can not pass through a staggered hole due to the change of the tail direction in the downward passing process of the baffle plate, and the hoisting cage can not limit the tail part of the heat exchange tube any more as the passing distance of the heat exchange tube becomes longer and the heat exchange tube in the cage becomes shorter, but the gravity of the heat exchange tube is larger due to the downward gravity direction of the heat exchange tube, and the gravity and the baffle plate cooperatively control the passing direction of the heat exchange tube;
4) And (3) assembling a shell: the shaft type lifting lug is welded on the shell, the lifting lug bears the weight of the whole heat exchanger, the shell is lifted, and the length of the shell can ensure that the heat exchange tube exposes out of the tube surfaces on two sides;
5) Assembling an upper tube plate: assembling the upper tube plate and the shell, performing positioning welding, lying the shell after assembling, and sealing the upper tube plate and the shell;
in the step 5), the upper tube plate is assembled with the shell, according to the tube hole distribution, an octagonal positioning method is adopted, namely, the tube is thrown from the bottom part to the upper tube plate,
the number of the positioned heat exchange tubes is not less than 10 percent, and the tube plate and the shell are positioned and welded after being positioned;
and (3) backing welding is carried out by adopting argon arc welding, carbon dioxide gas shielded welding is used as a filling layer, and cover layer welding is carried out after lying horizontally.
2. The vertical assembly process for an industrial heat exchanger according to claim 1, wherein,
in the step 1), 4I-steel plates are assembled into a cross support at the bottom of the steel plate and used for supporting a bottom tube plate and the whole tube bundle;
the I-steel model is 16# to 20#
The bottom tube plate is made of steel plates with delta 24-delta 30 mm;
the diameter of the steel plate is 150-250 mm larger than the outer diameter of the lower tube plate;
the gap between the steel plate and the bottom tube plate is 100-200mm,
20-24 supporting plates are welded outside the bottom tube plate at the upper part of the steel plate, and the thickness of each supporting plate is 16-20 mm.
3. The vertical assembly process of the industrial heat exchanger according to claim 1, wherein in the step 4), two shaft type lifting lugs are symmetrically welded at the upper part of the shell respectively, the type of the lifting lugs can bear the weight of the whole tube bundle, and the shell is integrally sleeved on the tube bundle by using a travelling crane;
the concentricity of the shell and the tube bundle is less than or equal to 5mm;
the assembly clearance between the shell and the tube plate is 4-6 mm;
the whole size of the shell is 5-10 mm shorter than that of the heat exchange tube.
4. The vertical assembly process of industrial heat exchangers according to claim 1, wherein in step 5) the weld backing layer is welded twice, the welding current is 90-150A, the arc voltage is 10-12V, and the welding speed is 6-8cm/min; the welding current of the weld filling layer is 100-180A, the arc voltage is 22-33V, and the welding speed is 15-25cm/min; the welding current of the weld joint cover layer is 480-550A, the arc voltage is 30-35V, and the welding speed is 25-35cm/min.
5. An installation device for realizing the vertical assembly process of the industrial heat exchanger according to any one of claims 1 to 4, which is characterized by comprising a travelling crane, a hoisting cage and a welding device.
6. An industrial heat exchanger as claimed in any one of claims 1 to 4 after the installation of the vertical assembly process for industrial heat exchangers.
7. Use of the industrial heat exchanger vertical assembly process of any one of claims 1-4 in the rapid assembly of horizontal heat exchangers.
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| CN202110383039.6A CN113001101B (en) | 2021-04-09 | 2021-04-09 | Vertical assembly process of industrial heat exchanger and installation device and application thereof |
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| CN202110383039.6A CN113001101B (en) | 2021-04-09 | 2021-04-09 | Vertical assembly process of industrial heat exchanger and installation device and application thereof |
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| CN113001101B true CN113001101B (en) | 2023-08-01 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102004061354B3 (en) * | 2004-12-21 | 2006-03-09 | Robert Bosch Gmbh | Heat exchanger manufacturing method, involves drilling through-holes in guide plates by laser beams, and supporting plates in helical duct by supporting unit, and inserting pipes for heat medium into holes |
| CN101608876B (en) * | 2009-07-01 | 2010-10-27 | 南通三圣石墨设备科技有限公司 | Assembling method of vertical tube-type graphite heat exchanger |
| CN101862917B (en) * | 2010-06-11 | 2012-07-18 | 鲁西工业装备有限公司 | Welding process of double-tube plate heat exchange equipment |
| CN108213887B (en) * | 2018-04-03 | 2023-12-26 | 哈电集团（秦皇岛）重型装备有限公司 | Manufacturing and tipping device for heat exchanger tube bundle assembly |
| CN109202426B (en) * | 2018-09-12 | 2023-09-08 | 广西建工集团第一安装工程有限公司 | On-site pipe penetrating tool device and process for large vertical fixed pipe plate type heat exchanger |
| CN111375920B (en) * | 2018-12-27 | 2022-01-04 | 航天海鹰(哈尔滨)钛业有限公司 | Tooling method for welding capillary tube heat exchanger |
| CN111504092B (en) * | 2020-05-19 | 2024-07-23 | 贵州兰鑫石墨机电设备制造有限公司 | Graphite tube heat exchanger and assembly method thereof |
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