CN116517363A - Construction method for splicing limited space ice storage device - Google Patents
Construction method for splicing limited space ice storage device Download PDFInfo
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- CN116517363A CN116517363A CN202310586207.0A CN202310586207A CN116517363A CN 116517363 A CN116517363 A CN 116517363A CN 202310586207 A CN202310586207 A CN 202310586207A CN 116517363 A CN116517363 A CN 116517363A
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- 238000003860 storage Methods 0.000 title claims abstract description 106
- 238000010276 construction Methods 0.000 title claims abstract description 70
- 238000003466 welding Methods 0.000 claims abstract description 85
- 238000009434 installation Methods 0.000 claims abstract description 37
- 238000013461 design Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000004321 preservation Methods 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000011835 investigation Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 91
- 239000010959 steel Substances 0.000 claims description 91
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- 238000009413 insulation Methods 0.000 claims description 13
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- 239000000463 material Substances 0.000 claims description 10
- 238000005498 polishing Methods 0.000 claims description 10
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 4
- 229910000611 Zinc aluminium Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005034 decoration Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 3
- 238000005493 welding type Methods 0.000 claims description 3
- 238000005536 corrosion prevention Methods 0.000 claims description 2
- 230000001680 brushing effect Effects 0.000 claims 2
- 238000007689 inspection Methods 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
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- 210000000476 body water Anatomy 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
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- 238000004146 energy storage Methods 0.000 description 1
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- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
-
- 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
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
-
- 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
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/04—Containers for fluids or gases; Supports therefor mainly of metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
- F24F2005/0032—Systems storing energy during the night
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a construction method for assembling a limited space ice storage device, which comprises the following steps of familiarity drawing, on-site investigation, deepening design and stress analysis: the method comprises the steps of carrying out deepening design on a large ice storage tank body, carrying out integral modularized splitting on an original ultra-large coil pipe, splitting the deepening design into 45 coil pipe groups, carrying out stress analysis, track type hanging frame design and installation, tank body welding assembly, coil pipe modularized installation connection, strength test, tank body shell heat preservation construction and acceptance inspection on the ice storage tank body. The invention can enlarge the heat exchange area of the ice storage tank body and improve the heat transfer efficiency by the way of tightly arranging the coils, and the construction method of the invention simplifies the whole large coil into modularized combination by deepening the design, comprehensively adopts assembly type construction, further reduces the construction difficulty of the large coil, improves the construction efficiency and shortens the construction period.
Description
Technical Field
The invention relates to the technical field of ice storage device assembly, in particular to a construction method for limited space ice storage device assembly.
Background
In the construction process of underground space and municipal matched facility engineering, the matched construction project of a cooling system is needed, the construction of the underground space cooling project is completed by adopting the ice storage system technology, the ice storage energy storage technology is adopted, at night, the ice storage device is used for refrigerating an ice machine operated in the low-valley time of the electric load, the refrigerating capacity is stored in the form of ice, when the electric load is higher in daytime (electricity consumption peak), the stored ice is melted, the refrigerating capacity is released, so that the air conditioner load requirement is met, and in the whole cooling process, the ice storage device plays a vital role.
The traditional splicing installation construction technology of the large ice storage device has some problems: the large-scale ice storage coil pipe device is large in size, the large-scale ice storage coil pipe is difficult to hoist, haul and install in a limited space, the problem of high construction difficulty exists, the installation quality of the ice storage coil pipe device is influenced, the installation period of the ice storage device is prolonged, the construction efficiency is influenced, the construction efficiency is low, the cost is high, the construction requirement cannot be met, and the problem of tension in the construction period exists.
Disclosure of Invention
The invention aims at solving the technical problems of high construction difficulty, long construction period, low construction efficiency, short construction period and the like of an ice storage device in the assembly process in the prior art, and provides a construction method which simplifies a large-scale coil pipe from a whole to a modularized combination, comprehensively adopts assembly type construction, can reduce the construction difficulty, is provided with a guide rail type hoisting device at the top of the ice storage groove position, is used for hoisting a steel structure groove body plate and the coil pipe in place on site, has high hoisting efficiency, can be adjusted according to the site installation space, can be installed in a narrow space, greatly shortens the installation time, can shorten the construction period, improves the construction efficiency and ensures the construction progress.
In order to solve the technical problems, the invention provides a construction method for assembling a limited space ice storage device, which comprises the construction method for assembling an oversized space ice storage device on site, wherein the ice storage device comprises an ice storage tank body and closely arranged coils, and the construction method comprises the following steps:
step 1) familiarity with drawings and on-site investigation: determining the installation position of ice storage device equipment according to the familiar design requirements of the existing design drawings, organizing construction site investigation, measuring and paying off aiming at the installation position of a large ice storage tank body, and ensuring that the installation space meets the technical requirements;
step 2) deep design and stress analysis: carrying out deepening design on a large ice storage tank body, carrying out integral modularization splitting on an original oversized coil, and splitting the deepening design into 45 coil groups, wherein the size of each coil group is 5710mm X1590mm X2085mm long and wide, so that later modularized assembly construction is facilitated, carrying out stress analysis on the ice storage tank body, and the method comprises the steps of carrying out stress analysis on a tank body bottom plate, six side walls, a top beam pull rod, a flat steel pull rod and a transverse pull rod of the ice storage tank body, wherein the six side walls are a first side wall, a second side wall, a third side wall, a fourth side wall, a fifth side wall and a sixth side wall respectively;
step 3) design and installation of a rail-type hanging bracket: welding a groove body steel plate of an ice storage groove body and a coil pipe hoisting portal frame on site, measuring the installation position of the coil pipe along the basis of the ice storage groove body, installing two longitudinal main hanging rails along the vertical line to the top, and installing two transverse hanging rails one by one as sliding rails for each ice storage groove body;
step 4) welding and assembling the groove body: the groove body structure of the cold accumulation groove body is welded with a national standard 160# I-steel as a main force column, the transverse reinforcing ribs adopt 10# channel steel to 14# channel steel, the side wall and the bottom plate around the cold accumulation groove body are welded with steel plates with the thickness of 10mm to strengthen the side wall and the bottom of the reinforced bottom surface, the materials are Q235, and the welding mode of the groove body structure adopts a welding method of welding 100mm flowers between 40 mm;
step 5), modular installation and connection of the coil pipes;
step 6) intensity test: when the coils are subjected to primary pressure test, the pressure resistance value of each coil needs to be ensured to meet the design requirement, a pressure detection report is provided, and when one layer of coils is installed, the cold storage tank body is filled with water and then rises to the top of the coils, and when all coils enter the cold storage tank body to be positioned for 48 hours, the cold storage tank body and the pressure maintaining condition of each coil need to be checked again, and no impact and no damage of each coil need to be ensured in the secondary hoisting process;
step 7), heat preservation construction of a tank shell: a rubber and plastic heat preservation layer is welded on the shell of the cold accumulation groove body, the rubber and plastic heat preservation layer is formed by wrapping 3 layers of 32mm rubber and plastic plates, the thickness of the rubber and plastic heat preservation layer is 96mm, and a zinc-aluminum alloy decoration panel is further arranged outside the rubber and plastic heat preservation layer;
step 8) acceptance: and (3) welding and plugging the water inlet and outlet of each group of coil pipes, installing a gas injection port and a pressure gauge, and performing pneumatic test on the coil pipes again.
As a further improvement of the technical scheme, in the step 3, the sliding rail is made of 16# I-steel, the length of the whole sliding rail is 36M, the I-steel is fixed on 5 bearing girders above the cold accumulation groove body area, steel plates are installed on two sides of the bearing girders to be connected with the I-steel rail for fixing, the distance between the bearing girders is 8M, the distance between fixed points of the sliding rail is not more than 3M, a ceiling fixed point is additionally arranged in the middle, each fixed steel plate is fixed on two sides of the bearing girders and a roof structural plate by using 6 expansion bolts with M14 times 150, and then the I-steel is firmly welded on the fixed steel plates.
As a further improvement of the above technical scheme, in step 4), before welding and assembling the groove body, the steel channels and the steel plates need to be subjected to anti-corrosion treatment, after the steel channels and the steel plates are brought to the site, the steel channels and the steel plates are subjected to surface rust polishing treatment, the steel channels are uniformly coated with EPOXY primer after the steel channels are cleaned by blowing, then blanking, cutting and assembling welding are performed, all the steel channels are combined in a butt joint way, the steel plate surface rust polishing treatment is clean, and the steel plates are uniformly coated with EPOXY primer after the steel channels are cleaned by blowing;
as a further improvement of the above technical solution, the stitch welding method in step 4) is as follows: the gap between the butt joint parts of the channel steel is 1-2 mm, the welding spot width is not less than twice the thickness of the welded parent metal, the minimum width is controlled to be 12mm or not more than 15mm, the central line of the welding seam cannot deviate from the joint seam, the two sides of the welded junction are respectively covered with the parent metal by 5-7 mm, the residual height of the welding spot is less than 2.0mm, and the length of each welding spot of the spot welding type is not less than 40mm.
As a further improvement of the above technical solution, the welding and assembling of the tank body in step 4) includes:
step 41) welding a groove bottom plate: the base plate is riveted, spliced and welded, standard size patterns are firstly discharged on the ground, steel plates of various specifications are placed at positions after the groove body is deeply designed, the thickness of the steel plates is 10mm, V-shaped grooves are formed in the steel plates, the inner angle of each groove is larger than 30 degrees and smaller than 45 degrees, the thickness of base materials is reserved at the bottoms of the grooves, the bottoms of the grooves are manufactured, the gaps of the spliced gaps are 2-3 mm, and welding rods with the diameter of 2.5mm can be easily inserted into the gaps;
step 42) groove bottom heat insulation plate installation: welding an insulation board on the bottom plate of the cold accumulation groove body, wherein the insulation board adopts a hard high-density extruded board with the thickness of 50mm, the compression strength is more than or equal to 150kPa per square, a 100x50mm anti-corrosion wood is used as a grid, the total insulation thickness is 100mm, and a layer of fine wood board is paved on the insulation board, and the thickness is about 3-4 mm;
step 43) mounting the side wall of the tank body: after the bottom plate is in place, riveting and welding assembly of the side wall are carried out, after the assembly welding of the upright post and the transverse reinforcing rib is finished, polishing, derusting and painting are carried out, then the assembly welding of the side wall steel plate is carried out, the reinforcing rib and the side wall are still welded by adopting a pattern welding method of 100mm between 40mm, the reinforcing rib and the side wall steel plate form a 90-degree right angle, the width of the welding spot covering the two sides of the right angle is larger than 10mm during welding, the length of each section of the welding seam is larger than mm, and the reserved interval is larger than 100mm;
step 44) groove body combined groove installation: the side walls are assembled one by one in a single-sided way, after one side wall is completed, the side walls are lifted by a hoist to be in a vertical state with the bottom plate, and the side walls are moved to the edge of the bottom plate to perform a riveting process with the bottom plate.
As a further improvement of the above technical solution, the modular coil installation connection in step 5) includes:
step 51) coil pipe hoisting: the coil pipe is lifted into the cold accumulation groove body to work in place, the coil pipe is lifted vertically by adopting double lifting points, and two 5T electric hoists are respectively hung on lifting lugs at two ends of the top of the coil pipe to perform horizontal and vertical lifting;
step 52) coil connection: after the coils are in place, all the coils are connected and converged on the main pipe, the connecting branch pipes are connected by adopting a sectional reducing mode and adopting flange plates, and the coils are gradually increased from DN65 to DN125 according to the number of the connecting coils until the connection of the longitudinal coils is completed.
As a further improvement of the above technical solution, the gas medium for acceptance driving in step 8) is: dry air or inert gas.
Compared with the prior art, the scheme of the invention at least comprises the following beneficial effects:
(1) The construction method comprises the following steps of familiarity drawing, on-site investigation, deepening design and stress analysis: the method comprises the steps of carrying out deepening design on a large ice storage tank body, carrying out integral modularized splitting on an original oversized coil, splitting the deepening design into 45 coil groups, carrying out stress analysis on the ice storage tank body, and carrying out stress analysis on a tank body bottom plate, six side walls, a top beam pull rod, a flat steel pull rod, a transverse pull rod, track type hanging frame design and installation, tank body welding assembly, coil modularized installation connection, strength test, tank body shell heat preservation construction and acceptance inspection of the ice storage tank body. The invention can enlarge the heat exchange area of the ice storage tank body and improve the heat transfer efficiency by the way of tightly arranging the coils, and the construction method of the invention simplifies the whole large coil into modularized combination by deepening the design, comprehensively adopts assembly type construction, further reduces the construction difficulty of the large coil, and ensures that the coil assembly type has the characteristics of strong applicability, high efficiency, reliable quality and the like. The construction method of the invention can be used for on-site hoisting of the ice storage tank body and the coil pipe in place by installing the rail type hanging bracket device at the top of the ice storage tank position, has high hoisting efficiency, can be adjusted according to the on-site installation space, and can be installed in a narrow space; according to the construction method, the large ice storage tank body is deeply designed, six main materials of the ice storage tank body are welded into a modularized form, welding dislocation in the construction process can be reduced, the construction efficiency is comprehensively improved, the construction period is shortened, the construction efficiency is improved, and the normal operation of the construction progress is ensured.
(2) The ice storage tank body constructed by the invention is independent equipment, the tank body structure of the ice storage tank body is reinforced by adopting various square steels and channel steels, the strength of the side wall and the tank bottom of the ice storage tank body is formed by adopting steel plates with the thickness of 10mm at the periphery and the bottom, and the ice storage tank body is made of Q235 material, so that the ice storage tank is safe and reliable for long-term use.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a construction flow diagram of a construction method for splicing a limited space ice storage device of the present invention;
FIG. 2 is a schematic view of the structure of the ice storage device of the present invention;
FIG. 3 is a deep design drawing of the invention for modularizing an ice storage device;
FIG. 4 is a cross-sectional view of an ice storage coil take-over in the ice storage device of the present invention;
FIG. 5 is a side view showing a side wall of the ice storage device of the present invention;
FIG. 6 is a schematic view of the structure of a top plate of the ice storage device of the present invention;
FIG. 7 is a schematic view showing the structure of a longitudinal tie in the ice-accumulating apparatus of the present invention;
FIG. 8 is a cross-sectional view of an ice storage tank of the ice storage device of the present invention;
FIG. 9 is a schematic view of the relationship between the main force column and the reinforcing ribs in the ice storage device of the present invention;
FIG. 10 is a schematic view of an ice-storage tank assembly of the ice-storage device of the present invention;
FIG. 11 is a schematic view of a rubber and plastic insulation layer in an ice storage device of the present invention;
FIG. 12 is a schematic view of an ice storage tank of the present invention after being welded by a spot welding method;
FIG. 13 is a schematic view showing the combination of ice-accumulating tanks according to the present invention.
In the figure, an ice storage tank body 1, a bottom plate 11, a heat insulation plate 111, a side wall 12, a first side wall 121, a second side wall 122, a third side wall 123, a fourth side wall 124, a fifth side wall 125, a sixth side wall 126, a top transverse pull rod 13, a flat iron pull rod 14, a transverse pull rod 15, a sliding rail 16, a longitudinal main hanging rail 161, a transverse hanging rail 162, a ceiling fixed point 163, a main upright 17, a rubber and plastic heat insulation layer 18 and a coil pipe 2.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described 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 be within the scope of the invention.
As shown in fig. 1 to 13, a first embodiment of the present invention provides a construction method for assembling an ice storage device in a limited space, including a construction method for assembling an ice storage device on site, where the ice storage device includes an ice storage tank 1 and closely arranged coils 2, the coils 2 are stainless steel coils 2, and the construction method includes the following steps:
step 1) familiarity with drawings and on-site investigation: determining the installation position of ice storage device equipment according to the familiar design requirements of the existing design drawings, organizing construction site investigation, measuring and paying-off aiming at the installation position of the large ice storage tank body 1, and ensuring that the installation space meets the technical requirements;
step 2) deep design and stress analysis: the method comprises the steps of performing deepening design on a large ice storage tank body 1, performing integral modularization splitting on an original oversized coil pipe 2, and performing deepening design splitting on the original oversized coil pipe 2 into 45 coil pipe 2 groups, wherein the size of each coil pipe 2 group is 5710mmX1590mmX2085mm in length and width, so that later modularized assembly construction is facilitated, and performing stress analysis on the ice storage tank body 1, wherein the six side walls 12 are a first side wall 121, a second side wall 122, a third side wall 123, a fourth side wall 124, a fifth side wall 125 and a sixth side wall 126 respectively;
step 3) design and installation of a rail-type hanging bracket: the method comprises the steps of welding a tank body steel plate of an ice storage tank body 1 and a coil pipe 2 on site, hoisting a portal frame, measuring the installation position of the coil pipe 2 along the basis of the ice storage tank body 1, installing two longitudinal main hanging rails 161 along the vertical line to the top, and installing two transverse hanging rails 162 one by one as sliding rails 16 for each ice storage tank body 1;
step 4) welding and assembling the groove body: the method comprises the steps that a groove body structure of a cold storage groove body is welded with 160# I-steel serving as a main force column, transverse reinforcing ribs are 14# channel steel, 12# channel steel and 10# channel steel, steel plates with the thickness of 10mm are welded on the peripheral side walls 12 and the bottom plate 11 of the cold storage groove body to strengthen the side walls 12 and the bottom of the bottom plate, the steel plates are made of Q235 materials, the steel plates are processed in a processing plant in a fixed-length cold mode, sheared plates are cut or cut into the standard required size of the cold storage groove body by laser and are sent to the site, and a welding mode of the groove body structure adopts a pattern welding method for welding 100mm between 40 mm;
step 5), modular installation and connection of the coil pipe 2;
step 6) intensity test: when the coil pipes 2 are subjected to primary pressure test, the pressure resistance value of each coil pipe 2 needs to be ensured to meet the design requirement, a pressure detection report is provided, each layer of coil pipe 2 is installed, cold storage tank body water is filled and then rises to the top of the coil pipe 2, after all the coil pipes 2 enter the cold storage tank body to be positioned for 48 hours, the pressure maintaining conditions of the cold storage tank body and each coil pipe 2 are checked again, and the fact that each coil pipe 2 is free from impact and damage in the secondary hoisting process needs to be ensured;
step 7), heat preservation construction of a tank shell: the outer shell of the cold accumulation groove body is welded with a rubber and plastic heat preservation layer 18, the rubber and plastic heat preservation layer 18 is formed by wrapping 3 layers of 32mm rubber and plastic plates, the thickness of the rubber and plastic heat preservation layer is 96mm, and a zinc-aluminum alloy decoration panel is further arranged outside the rubber and plastic heat preservation layer 18;
step 8) acceptance: and (3) welding and plugging the water inlet and outlet of each group of coil pipes 2, installing an air injection port and a pressure gauge, and performing inflation pressure test on the coil pipes 2 again.
The construction method provided by the invention can be used for deeply designing the ice storage tank structure, is formed by processing and welding various steels, and is used for constructing the whole refrigeration coil pipe 2 by using assembly type modularized splicing. The track type hanging frame can be manufactured according to the actual construction site, and the coil pipe 2 can be moved to a proper position in an omnibearing manner and then welded and fixed. The coil pipe 2 and the tank body are assembled after one-time pressure test, and the installation is completed to test the pressure again, so that the construction quality is ensured to be safe and reliable.
The sliding rail 16 in the step 3 is made of 16# I-steel, the length of the whole sliding rail 16 is 36M, the 16# I-steel is fixed on 5 bearing girders above the cold accumulation groove body area, steel plates are arranged on two sides of the bearing girders and are connected with the I-steel rail for fixation, the distance between the bearing girders is 8M, the distance between fixed points of the sliding rail 16 is not more than 3M, a ceiling fixed point 163 is additionally arranged in the middle of the sliding rail, each fixed steel plate is fixed on two sides of the bearing girders and a roof structural plate by using 6 expansion bolts with M14 x 150, and the I-steel is firmly welded on the fixed steel plates.
When the invention is concretely realized, the groove body is required to be subjected to corrosion prevention treatment before welding and assembling, after the steel such as the groove body and the steel plate are brought to the site, the surface of the groove body is subjected to rust polishing treatment, the surface of the groove body is purged, the EPOXY primer is uniformly coated, then blanking, cutting and assembly welding are carried out, each groove body is adopted for butt joint combination, the surface of the steel plate is subjected to rust polishing treatment, and the surface of the steel plate is purged, and the EPOXY primer is uniformly coated. The pattern welding method in the step 4) comprises the following steps: the gap between the butt joint parts of the channel steel is 1-2 mm, the welding spot width is not less than twice the thickness of the welded parent metal, the minimum width is controlled to be 12mm or not more than 15mm, the central line of the welding seam cannot deviate from the joint seam, the two sides of the welded junction are respectively covered with the parent metal by 5-7 mm, the residual height of the welding spot is less than 2.0mm, and the length of each welding spot of the spot welding type is not less than 40mm. In specific implementation, the welding and assembling of the groove body in the step 4) comprises the following steps:
step 41) welding the tank bottom plate 11: the base plate 11 is riveted, spliced and welded, standard size patterns are firstly discharged on the ground, steel plates of various specifications are placed according to the position of the deeply designed groove body, the thickness of the steel plates is 10mm, V-shaped grooves are formed in the steel plates, the inner angle of each groove is larger than 30 degrees and smaller than 45 degrees, the thickness of a base metal is reserved at the bottom of each groove, the groove bottom is formed, a splice joint is reserved for 2-3 mm, and welding rods with the diameter of 2.5mm can be easily inserted into the gap;
step 42) groove bottom heat preservation plate 111 is installed: the heat-insulating board 111 is welded on the cold accumulation groove body bottom plate 11, the heat-insulating board 111 adopts a hard high-density extruded board with the thickness of 50mm, the compression strength per square is more than or equal to 150kPa, a 100x50mm anti-corrosion wood block is used as a grid, the total heat-insulating thickness is 100mm, a layer of fine wood board is paved on the grid, the thickness is about 3-4 mm, and the fine wood board can be used for isolating the heat-insulating board 111 which is burnt and damaged at high temperature and is generated during upper part welding construction. When the splicing and riveting of the bottom plate 11 of the ice storage tank body 1 are completed, the whole bottom plate 11 is adjusted to be vertical by a hoist, welding slag and other sundries in a double-sided welded junction are cleaned, double-sided welding is performed for two times by a vertical-face welding mode, the surface is covered, the central line of a welding line cannot deviate from a joint seam, two sides of the welded junction are respectively covered with base materials of 6-8 mm, the total width of the welded junction is larger than 16mm after the welded junction is completed, and the welding line is attractive, full and fish scales are formed; the excess height of the weld seam is more than 2.5mm, polishing and cleaning are completed, the bottom surface is coated with primer and finish paint, and the bottom plate 11 is installed in a heat-insulating way;
step 43) tank side wall 12 installation: after the bottom plate 11 is in place, riveting, welding and assembling the side wall 12, polishing, derusting and painting after the assembly and welding of the upright post and the transverse reinforcing rib are completed, and then splicing and assembling and welding the steel plate of the side wall 12, wherein the reinforcing rib and the side wall 12 still adopt a welding method of 100mm flower welding between 40mm welding, the reinforcing rib and the steel plate of the side wall 12 form a 90-degree right angle, the width of the welding spot covering the two sides of the right angle is larger than 10mm during welding, the length of each section of welding seam is larger than mm, and the reserved interval is larger than 100mm;
step 44) groove body combined groove installation: the side walls 12 are assembled one by one, after one side wall 12 is completed, the side walls 12 are lifted by a hoist to be in a vertical state with the bottom plate 11, and the side walls are moved to the edge of the bottom plate 11 to perform a riveting process with the bottom plate 11. During riveting, the steel plates and the upright posts of the side wall 12 and the bottom plate 11 form 90 degrees, the size of the internal space of the tank body is strictly controlled according to the design size, and the error between the bottom and the upper opening edge is smaller than 10mm.
The modular installation connection of the coil pipe 2 in the step 5) of the invention comprises the following steps:
step 51), hoisting the coil pipe 2: the coil pipe 2 is hoisted into the cold accumulation groove body to work in place, the coil pipe 2 is hoisted vertically by adopting double hoisting points, and two 5T electric hoists are respectively hung on lifting lugs at two ends of the top of the coil pipe 2 to carry out horizontal and vertical hoisting; in the concrete implementation, the invention also makes a pair of special hoisting connecting pieces in site, which takes the limited floor height space into consideration, combines the size structure of hoisting points of the coil pipe 2, makes a pair of special hoisting connecting pieces in site, adopts a hoisting wall cross arm, converts a triangular hook into a horizontal cross arm type hook, the length of the hoisting wall cross arm is 1700mm, adopts 12# channel steel back-to-back welding, makes lifting lugs at two ends of the hoisting wall cross arm, uses a U-shaped clamping ring with the weight not less than that of a coil pipe 2, the bearing of the single U-shaped clamping ring is greater than 3.5T, locks the single U-shaped clamping ring on the lifting lugs at two sides of the coil pipe 2, welds hanging lugs at the middle part of the hoisting wall cross arm, hangs the hanging lugs on the hooks of the hoisting electric hoist, the size of the hoisting wall cross arm is matched with and firm with the hoisting points of the coil pipe 2, stops lifting after the hoisting the coil pipe 2 is higher than the reserved height of the side wall 12 of the ice groove, and slides upwards the sliding trolley on the sliding guide rail until the ice storage coil pipe 2 is vertically above the point, slowly descends, and the ice storage space is also slowly lowered to the position 2 when the ice storage space is close to the left side of the coil pipe 2, and the ice storage space is 500mm is well in place, and the ice storage space is well reserved at the left side of the position and the coil pipe is adjusted to be in place;
step 52) coil 2 connection: after the coils 2 are in place, all coils 2 are connected and converged on a main pipe, the connecting branch pipes are connected by adopting a sectional reducing mode and adopting flange plates, and the number of the connecting coils 2 is gradually increased from DN65 to DN125 until the connecting of the longitudinal coils 2 is completed.
In the concrete implementation of the invention, the gas medium injected in the step 8) during the test is as follows: dry air or inert gas, test pressure: not less than the design pressure of the system, namely 1.0Mpa; in the pressure test process, when the pressure reaches 0.4Mpa, performing first inspection, blending liquid with relative concentration by using detergent, spraying the liquid on a piping welded junction, and inspecting whether air leakage occurs or not, if so, releasing pressure and repairing if the air leakage occurs; if no leakage point phenomenon exists, the pressure is maintained for 12 hours under the pressure condition of 0.4Mpa, and then the pressure is continuously increased without depressurization; when the pressure reaches 0.8Mpa, performing secondary inspection, inspecting the welded junction by the method, maintaining the pressure for 12 hours in a state of 0.8Mpa, pressurizing to 1.0Mpa again, performing third inspection, and maintaining the pressure for not less than 48 hours without depressurization, thereby being qualified.
In the above embodiments, the construction method of the present invention includes the above embodiments, which are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, so that the present invention is not limited thereto but is defined by the following claims.
Claims (7)
1. The construction method for splicing the limited space ice storage device is characterized by comprising the following steps of: the construction method for carrying out on-site assembly on the ultra-large space ice storage device comprises an ice storage tank body and closely arranged coils, and comprises the following steps:
step 1) familiarity with drawings and on-site investigation: determining the installation position of ice storage device equipment according to the familiar design requirements of the existing design drawings, organizing construction site investigation, measuring and paying off aiming at the installation position of a large ice storage tank body, and ensuring that the installation space meets the technical requirements;
step 2) deep design and stress analysis: carrying out deepening design on a large ice storage tank body, carrying out integral modularization splitting on an original oversized coil, splitting the deepening design into 45 coil groups, wherein the size of each coil group is 5710mm X1590mm X2085mm in length and width, and carrying out stress analysis on the ice storage tank body, including a tank body bottom plate, six side walls, a top beam pull rod, a flat steel pull rod and a transverse pull rod of the ice storage tank body;
step 3) design and installation of a rail-type hanging bracket: welding a groove body steel plate of an ice storage groove body and a coil pipe hoisting portal frame on site, measuring the installation position of the coil pipe along the basis of the ice storage groove body, installing two longitudinal main hanging rails along the vertical line to the top, and installing two transverse hanging rails one by one as sliding rails for each ice storage groove body;
step 4) welding and assembling the groove body: the groove body structure of the cold accumulation groove body is welded with 160# I-steel as a main force column, the transverse reinforcing ribs adopt 10# channel steel to 14# channel steel, the side wall and the bottom plate around the cold accumulation groove body are welded with steel plates with the thickness of 10mm to strengthen the side wall and the bottom of the reinforced bottom surface, the materials are Q235, and the welding mode of the groove body structure adopts a pattern welding method for welding 100mm between 40 mm;
step 5), modular installation and connection of the coil pipes;
step 6) intensity test: when the coils are subjected to first pressure test, the pressure resistance value of each coil needs to be ensured to meet the design requirement, a pressure detection report is provided, and when one layer of coils is installed, the cold storage tank body is filled with water and rises to the top of the coils, and when all coils enter the cold storage tank body to be positioned for 48 hours, the cold storage tank body and the pressure maintaining condition of each coil need to be checked again;
step 7), heat preservation construction of a tank shell: a rubber and plastic heat preservation layer is welded on the shell of the cold accumulation groove body, the rubber and plastic heat preservation layer is formed by wrapping 3 layers of 32mm rubber and plastic plates, the thickness of the rubber and plastic heat preservation layer is 96mm, and a zinc-aluminum alloy decoration panel is further arranged outside the rubber and plastic heat preservation layer;
step 8) acceptance: and (3) welding and plugging the water inlet and outlet of each group of coil pipes, installing a gas injection port and a pressure gauge, and performing pneumatic test on the coil pipes again.
2. The construction method for assembling a limited space ice storage device according to claim 1, wherein: in the step 3, the sliding track is made of 16# I-steel, the length of the whole sliding track is 36M, the I-steel is fixed on 5 bearing girders above the cold accumulation groove body area, steel plates are installed on two sides of the bearing girders and are connected with the I-steel track for fixation, the distance between the bearing girders and the bearing girders is 8M, the distance between fixed points of the sliding track is not more than 3M, a ceiling fixed point is additionally arranged in the middle of the sliding track, each fixed steel plate is fixed on two sides of the bearing girders and a roof structural plate by using 6 expansion bolts with M14 x 150, and the I-steel is firmly welded on the fixed steel plates.
3. The construction method for assembling a limited space ice storage device according to claim 1, wherein: and 4) carrying out corrosion prevention treatment on channel steel and steel plates before welding and assembling the channel body, after the channel steel and the steel plates are subjected to on-site profile steel materials, polishing the channel steel surface rust clean, uniformly brushing EPOXY primer after cleaning the surface, blanking, cutting and assembling and welding, adopting the butt-joint combination of the channel steel materials, polishing the steel plate surface rust clean, and uniformly brushing the EPOXY primer after cleaning the surface.
4. The construction method for assembling a limited space ice storage device according to claim 1, wherein: the pattern welding method in the step 4) is as follows: the gap between the butt joint parts of the channel steel is 1-2 mm, the welding spot width is not less than twice the thickness of the welded parent metal, the minimum width is controlled to be 12mm or not more than 15mm, the central line of the welding seam cannot deviate from the joint seam, the two sides of the welded junction are respectively covered with the parent metal by 5-7 mm, the residual height of the welding spot is less than 2.0mm, and the length of each welding spot of the spot welding type is not less than 40mm.
5. The construction method for assembling a limited space ice storage device according to claim 1, wherein: the tank body welding assembly in the step 4) comprises the following steps:
step 41) welding a groove bottom plate: the base plate is riveted, spliced and welded, standard size patterns are firstly discharged on the ground, steel plates of various specifications are placed at positions after the groove body is deeply designed, the thickness of the steel plates is 10mm, V-shaped grooves are formed in the steel plates, the inner angle of each groove is larger than 30 degrees and smaller than 45 degrees, the thickness of base materials is reserved at the bottoms of the grooves, the bottoms of the grooves are manufactured, the gaps of the spliced gaps are 2-3 mm, and welding rods with the diameter of 2.5mm can be easily inserted into the gaps;
step 42) groove bottom heat insulation plate installation: welding an insulation board on the bottom plate of the cold accumulation groove body, wherein the insulation board adopts a hard high-density extruded board with the thickness of 50mm, the compression strength is more than or equal to 150kPa per square, a 100x50mm anti-corrosion wood is used as a grid, the total insulation thickness is 100mm, and a layer of fine wood board is paved on the insulation board, and the thickness is about 3-4 mm;
step 43) mounting the side wall of the tank body: after the bottom plate is in place, riveting and welding assembly of the side wall are carried out, after the assembly welding of the upright post and the transverse reinforcing rib is finished, polishing, derusting and painting are carried out, then the assembly welding of the side wall steel plate is carried out, the reinforcing rib and the side wall are still welded by adopting a pattern welding method of 100mm between 40mm, the reinforcing rib and the side wall steel plate form a 90-degree right angle, the width of the welding spot covering the two sides of the right angle is larger than 10mm during welding, the length of each section of the welding seam is larger than mm, and the reserved interval is larger than 100mm;
step 44) groove body combined groove installation: the side walls are assembled one by one in a single-sided way, after one side wall is completed, the side walls are lifted by a hoist to be in a vertical state with the bottom plate, and the side walls are moved to the edge of the bottom plate to perform a riveting process with the bottom plate.
6. The construction method for assembling a limited space ice storage device according to claim 1, wherein: the modular coil mounting connection of step 5) includes:
step 51) coil pipe hoisting: the coil pipe is lifted into the cold accumulation groove body to work in place, the coil pipe is lifted vertically by adopting double lifting points, and two 5T electric hoists are respectively hung on lifting lugs at two ends of the top of the coil pipe to perform horizontal and vertical lifting;
step 52) coil connection: after the coils are in place, all the coils are connected and converged on the main pipe, the connecting branch pipes are connected by adopting a sectional reducing mode and adopting flange plates, and the coils are gradually increased from DN65 to DN125 according to the number of the connecting coils until the connection of the longitudinal coils is completed.
7. The construction method for assembling a limited space ice storage device according to claim 1, wherein: the gas medium for acceptance driving in the step 8) is as follows: dry air or inert gas.
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| CN117246785A (en) * | 2023-09-11 | 2023-12-19 | 广州市机电安装有限公司 | Transportation method of ice storage coil pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117246785A (en) * | 2023-09-11 | 2023-12-19 | 广州市机电安装有限公司 | Transportation method of ice storage coil pipe |
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