CN111268293A - Full-liquid-connection welding stainless steel floating disc and construction method - Google Patents
Full-liquid-connection welding stainless steel floating disc and construction method Download PDFInfo
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- CN111268293A CN111268293A CN202010262168.5A CN202010262168A CN111268293A CN 111268293 A CN111268293 A CN 111268293A CN 202010262168 A CN202010262168 A CN 202010262168A CN 111268293 A CN111268293 A CN 111268293A
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- 238000007667 floating Methods 0.000 title claims abstract description 264
- 238000003466 welding Methods 0.000 title claims abstract description 71
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 45
- 239000010935 stainless steel Substances 0.000 title claims abstract description 45
- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 126
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims description 24
- 238000003860 storage Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims 2
- 230000009193 crawling Effects 0.000 abstract description 2
- 238000005188 flotation Methods 0.000 description 22
- 239000003921 oil Substances 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 14
- 230000008901 benefit Effects 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/34—Large containers having floating covers, e.g. floating roofs or blankets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/08—Interconnections of wall parts; Sealing means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/10—Manholes; Inspection openings; Covers therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2590/00—Component parts, details or accessories for large containers
- B65D2590/0091—Ladders
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a full-liquid-connection welded stainless steel floating disc and a construction method thereof, wherein the full-liquid-connection welded stainless steel floating disc comprises a floating disc body, an oil measuring and guide column sealing device, an automatic vent valve, an edge vent valve, an anti-rotation device, an electrostatic conducting steel wire rope, a floating disc supporting leg, a manhole, a crawling ladder and an edge plate, wherein the oil measuring and guide column sealing device is arranged on the floating disc body; the floating disc body comprises an installation frame and floating boxes, the installation frame is arranged inside the edge plate and is a steel structure plane grid frame, the installation frame is circular, the installation frame comprises a plurality of cell frames, and a plurality of floating boxes arranged side by side are respectively embedded and connected in each cell frame; the cell frame is rectangular; the mounting frame is formed by mutually splicing mounting beams with the same specification and size in a T shape; the floating plates are connected between the mounting beams, between the mounting beams and the floating boxes, between the edge plates and the mounting beams and between the floating boxes through bolts at the bottom connecting joints, and are connected into an integral structure at the upper connecting joints through airtight welding.
Description
Technical Field
The invention relates to the technical field of floating roof storage tank floating plate sealing, in particular to a full-liquid-connection welded stainless steel floating plate and a construction method.
Background
With the upsizing of oil storage tanks and oil depots, the requirement for the floating disc seal of the floating-roof oil storage tank is higher and higher. In recent years, lightning strike and fire accidents of a storage tank floating disc sealing ring frequently occur, the reasons are that the floating disc seal leaks, and explosive gas exists between the storage tank floating disc seals; the oil tank sealing leakage also causes a large amount of hydrocarbon gas volatilization, the environmental pollution problem is prominent, and the air quality is seriously influenced; the volatilization of a large amount of oil gas also causes the loss of oil products, and the economic benefit is greatly influenced.
At present, the floating plates of the internal floating roof oil tank in China are various, and the floating plates comprise an aluminum floating barrel type internal floating plate, a full liquid receiving floating box type aluminum floating plate, a stainless steel splicing floating plate, a steel floating plate and the like, and have advantages and disadvantages.
The aluminum float-type floating plate has the advantages of light weight, simple installation, low manufacturing cost and the like, but because a certain evaporation space exists between the skin of the floating plate and the oil surface, the volatilization loss of part of oil products can be caused. All connect liquid box-type aluminium floating plate and concatenation formula stainless steel floating plate, have all connect liquid quality, but intensity is relatively poor, and seam department is sealed not tight, may cause the flooding, and the floating plate sinking disc accident in all connecting liquid in recent years has many, and the majority is the flooding or intensity relatively poor causes. The steel floating disc has poor corrosion resistance, is easy to pollute oil products, and is difficult to install, so that the problem needs to be solved urgently.
Disclosure of Invention
The invention provides a full-liquid-contact welding stainless steel floating disc and a construction method thereof, and aims to solve the problems that the existing floating disc is poor in stability, low in strength and poor in sealing at a joint and volatile oil is easily produced.
The invention adopts the following technical scheme:
a full-liquid-connection welding stainless steel floating disc comprises a floating disc body, an oil measuring and guide column sealing device, an automatic vent valve, an edge vent valve, an anti-rotation device, a static-conducting steel wire rope, a floating disc supporting leg, a manhole, a crawling ladder and an edge plate, wherein the oil measuring and guide column sealing device is installed on the floating disc body; the floating disc body comprises an installation frame and floating boxes, the installation frame is arranged inside the edge plate and is a steel structure plane grid frame, the outer contour of the installation frame is circular, the installation frame comprises a plurality of cell frames, and a plurality of floating boxes arranged side by side are respectively embedded and connected in each cell frame; the unit cell frame is rectangular; the mounting frame is formed by mutually splicing mounting beams with the same specification and size in a T shape; the installation beams, the installation beams and the floating boxes, the floating boxes and the edge plates and the installation beams and the floating boxes are connected into a whole through bolts at bottom connecting seams and are connected into a whole through airtight welding at upper connecting seams.
T shape concatenation does the top of installation roof beam is with adjacent the positive perpendicular connection of installation roof beam is up to enclosing into the rectangle the unit check frame, the unit check frame stretches out the top of installation roof beam is with adjacent the positive perpendicular connection of centre of installation roof beam, T shape concatenation is followed extend to the outer lane in the middle of the floatplate body and splice to the marginal slab inner circle edge is fixed.
The upper surface of the middle of the mounting beam and the upper and lower surfaces of the top ends of the two ends of the mounting beam are welded with bolt connecting pieces, the lower surface of the middle of the mounting beam is welded with a supporting leg mounting plate and is provided with a bolt connecting piece structure, two adjacent mounting beam connecting joints are fixedly connected through bolts of the bolt connecting pieces or the supporting leg mounting plates arranged below, and connecting joints in the upper direction, the left direction and the right direction at the connecting joints of the mounting beams are hermetically welded, so that the mounting beams are integrated; the supporting leg mounting plate is characterized in that a floating plate supporting leg is vertically fixed on the bottom surface of the supporting leg mounting plate, and a plurality of rib plates are uniformly distributed on the periphery of the floating plate supporting leg and are fixedly connected with the supporting leg mounting plate in a welding mode.
The buoyancy tank is of a closed rectangular tank body structure, and a supporting rib plate is arranged in the buoyancy tank; the height of the mounting beam is the same as the thickness of the buoyancy tanks, and a plurality of buoyancy tanks are arranged in the cell frame.
The two sides of the lower surface of the mounting beam are provided with buoyancy tank bolt connecting pieces along the length, the buoyancy tanks are correspondingly provided with buoyancy tank bolt connecting pieces, the peripheries of the lower surfaces of the buoyancy tanks are adjacent to the connection joints of the frames of the unit lattice frames through the buoyancy tank bolt connecting pieces in a screwed connection mode, and the connection joints of the buoyancy tanks, the buoyancy tanks and the connection joints between the frames of the unit lattice frames are sealed through airtight welding on the upper surfaces.
The connection pressing strip comprises a U-shaped strip and a U-shaped pressing strip, the U-shaped pressing strip is arranged at the bottom of the U-shaped strip, the notches of the U-shaped pressing strip are buckled on the U-shaped strip by two upper covers, a plurality of compression nuts are arranged at the bottom of the U-shaped groove of the U-shaped strip along the length direction, the compression nuts correspond to through holes formed in the bottom plate of the U-shaped pressing strip, and the U-shaped pressing strip is fixedly connected with the U-shaped strip in a screwed mode.
The mounting beam is a stainless steel pipe with two closed ends and a square cross section; the unit cell frame is square; the cell frame and the floating box close to the edge of the floating disc are naturally formed along with the circle.
The upper end and the lower end of the edge plate are horizontally bent to the outside to form a bending edge, the inner side surface of the edge plate is abutted against the side surface of the floating box at the edge of the floating plate body, the upper surface of the floating box is tightly attached to the bottom surface of the horizontal plate welded on the inner side surface of the middle part of the edge plate, and the bottom surface of the floating box is welded with a horizontal connecting plate, extends to the outside and then is overlapped and screwed with the lower bending edge of the edge plate; welding the upper surface of the floating disc body with the edge plate connecting gap completely, namely, welding the floating box at the edge and the upper surface of the mounting beam with the edge plate connecting gap in an airtight manner; the mounting beam is overlapped and screwed with the lower bent edge of the edge plate through a bolt connecting piece or a supporting leg mounting plate; the upper surface of the mounting beam is tightly attached to the bottom surface of the horizontal plate and is in airtight welding connection.
A construction method of a full liquid-connection welding stainless steel floating disc comprises the following construction steps,
determining the central position of a storage tank, determining the central position of the whole storage tank by a laser level meter and a distance meter, wherein the central position is also the reference position for splicing the floating disc, and meanwhile, setting the laser level meter at the designed height to determine the reference height of the floating disc;
determining the direction of a starting installation frame according to a design drawing so as to ensure the accurate installation position of the floating disc accessory;
splicing the installation frames, namely sequentially splicing the installation frames from inside to outside, wherein the bottoms of the installation frames are connected through bolts by bolt connecting pieces, and the length and width errors of the center of each grid are ensured to meet the design requirements during splicing;
welding the installation frame, namely welding the upper direction, the left direction and the right direction of the joint of the installation beam of the installation frame to enable the installation frame to be integrated, and dividing the whole floating disc body into a plurality of independent sealed cabin structures through the installation frame;
step five, installing the floating boxes, namely numbering the floating boxes according to the installation sequence and respectively installing the floating boxes at the appointed positions, and mutually connecting and fastening the floating boxes on the lower surface of the floating plate body by using connecting pressing strips;
installing edge plates, namely installing the edge plates at a specified position one by one, and fixing the buoyancy tank and the installation frame by bolts;
welding the upper surface of the floating disc body, and after splicing, completely welding the upper surface of the floating disc body and the edge plate connecting gap to ensure air tightness;
step eight, after welding, checking all welding seams to ensure that no cold joint and leakage exist;
installing an oil measuring and guiding column sealing device, an automatic vent valve, an edge vent valve, an anti-rotation device, a static-conducting steel wire rope, a floating disc supporting leg, a manhole and a ladder stand on the floating disc body;
step ten, integrally checking and ending, and cleaning the site.
The invention has the following advantages:
1. the mounting frame of the stainless steel floating disc is formed by mutually splicing the mounting beams in a T shape, all the mounting beams in the middle except the edge beams are in the same specification and size, the production is facilitated, the top and the middle of two ends of each mounting beam are connected with other 4 mounting beams, and all the mounting beams are connected into a large grid structure, so that the whole floating disc becomes a whole without weak points;
2. according to the stainless steel floating disc, the connection mode and the connection position of the installation frame and the floating box are improved, a bolt connection and welding mixed mode is adopted, the bolt connection is completed by welding bolt connecting pieces on the floating box and the installation beam, the floating boxes are connected by being respectively in threaded connection with the two U-shaped strips through the bottom U-shaped pressing strips, the field installation speed is increased, and the field workload is reduced; then, the buoyancy tanks, the mounting beams and the buoyancy tanks and the mounting frames are hermetically welded into a whole on the upper surface of the floating plate in an argon arc welding mode, so that the whole floating plate is of an integral structure without gaps, the integral strength of the floating plate is improved, the floating plate is not leaked, and the sealing performance is good;
3. the mounting frame is made by stainless steel section bar rectangular pipe or square pipe, seals up rectangular pipe or square pipe both sides, has so promptly guaranteed intensity, also makes the mounting frame also become a part of buoyancy element. Because the rectangular pipe design is adopted as the main beam, when the main beam is stressed in any direction, one surface bears the design of the maximum tensile force and the maximum torque, and the stress weak directions in all directions are avoided, so that the strength is balanced. The lower part of the center of the mounting beam is provided with a floating disc landing leg mounting plate, and the landing leg mounting plate is integrated with the bolt connecting piece of the mounting beam, so that the connecting stress of the landing leg is enhanced, and the weight is effectively reduced;
4. because airtight welding for whole floating disc is cut apart into a plurality of independent sealed regions by the installation roof beam, and in the operation process, even a certain region takes place to leak or damage, because each region is independent, seals respectively, and similar sealed cabin structure can not harm the sealed and buoyancy of adjacent region yet, has further promoted the security performance of floating disc.
Description of the drawings:
FIG. 1 is a schematic view of the assembly of the floating plate of the present invention in elevation.
FIG. 2 is a schematic plan view of the floating plate assembly of the present invention.
Fig. 3 is a schematic view of the mounting beam of the present invention.
Fig. 4 is a schematic view of the connection relationship of the local positions of the mounting frame of the present invention.
FIG. 5 is a schematic view of the T-shaped splicing mode of the mounting frame portion structure of the present invention.
Fig. 6 is a schematic view of the T-shaped splicing mode of the whole mounting frame structure of the invention.
Fig. 7 is a schematic view of a partial position structure of the mounting frame of the present invention.
Fig. 8 is a schematic view of the installation position of the landing leg and the mounting frame of the floating plate of the present invention.
Fig. 9 is a schematic view of the fixing mode of the support leg of the invention.
FIG. 10 is a schematic view of the hermetic welding and sealing of the upper surfaces of a plurality of buoyancy tanks according to the present invention.
FIG. 11 is a schematic view of the connection between the pontoons of the present invention.
FIG. 12 is a schematic view of the position of the connecting bead according to the present invention.
Fig. 13 is a schematic view of the bolting of the lower surface of the buoyancy tank of the present invention.
FIG. 14 is a schematic view of the U-shaped strip structure of the present invention.
Fig. 15 is a schematic view of a conventional structure of an edge plate and a buoyancy tank.
FIG. 16 is a schematic view of the connection between the edge plate and the buoyancy tank according to the present invention.
FIG. 17 is a schematic view of the distribution of the buoyancy tanks according to the design numbers of the present invention.
FIG. 18 is a schematic view of the connection between the edge plate and the buoyancy tank according to the present invention.
Reference numerals:
1-a floating disc body, 11-a mounting frame, 111-a mounting beam, 113-a bolt connector, 114-a leg mounting plate, 115-a floating disc leg, 116-a rib plate, 12-a floating box, 13-an edge plate, 130-a connecting batten, 131-a U-shaped strip, 132-a U-shaped batten, 133-a gland nut, 1301-a horizontal plate, 1302-a connecting plate, 1303-a connecting bolt, 2-an oil measuring and guide column sealing device, 3-an automatic breather valve, 4-an edge breather valve, 5-an anti-rotation device, 6-an electrostatic conducting steel wire rope, 7-a low manhole, 8-a manhole and a ladder stand, 9-a primary seal, 10-a liquid level meter, 121-a welding reinforcing rib position in the floating box and a welding position between 1110-a mounting beam, 1111-top end of mounting beam, 1112-right middle of mounting beam, 1113-buoyancy tank bolt connection
The specific implementation mode is as follows:
the following further describes the embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, a full liquid-contacting welding stainless steel floating plate comprises a floating plate body 1, an oil-measuring and guide column sealing device 2 installed on the floating plate body 1, an automatic vent valve 3, an edge vent valve 4, an anti-rotation device 5, a static-conducting steel wire rope 6, a floating plate supporting leg 115, a manhole and ladder 8 and an edge plate 13; the floating disc body 1 comprises an installation frame 11 and floating boxes 12, the installation frame 11 is arranged inside an edge plate 13, the installation frame 11 is a steel structure plane grid frame, the outer contour of the installation frame 11 is circular, the installation frame 11 comprises a plurality of unit grid frames, and a plurality of floating boxes 12 arranged side by side are respectively embedded and connected in each unit grid frame; the unit cell frame is rectangular; the mounting frame 11 is formed by mutually splicing mounting beams 111 with the same specification and size in a T shape; the installation beams 111, the installation beams 111 and the buoyancy tanks 12, the buoyancy tanks 12 and the edge plates 13, the installation beams 111 and the buoyancy tanks 12 are all connected into a whole through bolts at the bottom connecting seams and are all connected into a whole through airtight welding at the upper connecting seams.
The T-shaped splicing is that the top end 1111 of the installation beam 111 is vertically connected with the adjacent middle 1112 of the installation beam 111 until the cell frame is enclosed to form a rectangle, the top end 1111 of the installation beam 111 extending out of the cell frame is vertically connected with the adjacent middle 1112 of the installation beam 111, and the T-shaped splicing extends from the middle of the floating disc body 1 to the outer ring to be spliced to the edge of the inner ring of the edge plate 13 to be fixed, which is shown in the attached drawings 4, 5, 6 and 7.
The bolt connecting pieces 113 are welded on the upper surface of the middle of the mounting beam 111 and the upper and lower surfaces of the top ends of the two ends of the mounting beam 111, the leg mounting plate 114 is welded on the lower surface of the middle of the mounting beam 111 and has a bolt connecting piece 113 structure, the connecting seams of the two adjacent mounting beams 111 are fixedly connected through the bolt connecting pieces 113 or the leg mounting plates 114 arranged below, and the connecting seams in the upper, left and right directions at the connecting seams of the mounting beams 111 are hermetically welded, so that the mounting beams 111 are integrated; the bottom surface of the leg mounting plate 114 is vertically fixed with a floating plate leg 115, and a plurality of rib plates 116 are uniformly distributed around the floating plate leg 115 and are welded and connected with the leg mounting plate 114, as shown in fig. 3, 4, 8 and 9.
The buoyancy tank 12 is of a closed rectangular tank structure, and a support rib plate is arranged inside the buoyancy tank 12; the height of the mounting beam 111 is the same as the thickness of the buoyancy tank 12, and a plurality of buoyancy tanks 12 are arranged in the cell frame, see fig. 1, 2, 10, 11, 12, 13 and 17.
Buoyancy tank bolt connecting pieces 1113 are arranged on two sides of the lower surface of the mounting beam 111 along the length, buoyancy tanks 12 are correspondingly provided with the buoyancy tank bolt connecting pieces 1113, the periphery of the lower surface of each buoyancy tank 12 is in threaded connection and fixation with the adjacent frame connecting joint of the unit lattice frame through the buoyancy tank bolt connecting pieces 1113, and the connecting joints of the adjacent two buoyancy tanks 12 and the connecting joints between the buoyancy tanks 12 and the frames of the unit lattice frame are sealed by airtight welding on the upper surfaces, which is shown in the attached figures 4, 11, 12 and 13.
The adjacent two floating boxes 12 or the floating boxes 12 and the adjacent bottom of the mounting beam 111 are fixedly connected through a connecting pressing strip 130, the connecting pressing strip 130 comprises U-shaped strips 131 and U-shaped pressing strips 132, two parallel U-shaped strips 131 with upward notches are symmetrically welded on two sides of a splicing seam at the bottom of the adjacent two floating boxes 12, the U-shaped pressing strips 132 are arranged at the bottom of the two U-shaped strips 131, the notches of the U-shaped pressing strips 132 are buckled on the two U-shaped strips 131 towards the upper cover, a plurality of compression nuts 133 are arranged at the bottom of the U-shaped grooves of the U-shaped strips 131 along the length direction, the compression nuts 133 correspond to through holes arranged on the bottom plate of the U-shaped pressing strips 132 and are inserted with bolts to fix the U-shaped pressing strips 132 and the two U-shaped strips 131 in a screwed manner, see fig. 10, 11, 12, 13 and.
The mounting beam 111 is a stainless steel pipe with two closed ends and a square cross section; the unit cell frame is square; the cell frame, buoyancy chamber 12, adjacent the edge of the float is naturally shaped with the circle.
The upper end and the lower end of the edge plate 13 are horizontally bent to the outside to form a bent edge, the inner side surface of the edge plate 13 is abutted against the side surface of the floating box 12 at the edge of the floating disc body 1, the upper surface of the floating box 12 is tightly attached to the bottom surface of a horizontal plate 1301 welded to the inner side surface of the middle part of the edge plate 13, and the bottom surface of the floating box 12 is welded with a horizontal connecting plate 1302, extends to the outside and then is overlapped and screwed with the lower bent edge of the edge plate 13; the upper surface of the floating disc body 1 is welded with the edge plate 13 in a connecting gap, namely the floating box 12 at the edge and the upper surface of the mounting beam 111 are welded with the edge plate 13 in an airtight mode; the mounting beam 111 is overlapped, screwed and fixed with the lower bent edge of the edge plate 13 through a bolt connector 113 or a supporting leg mounting plate 114; the upper surface of the mounting beam 111 is hermetically welded to the bottom surface of the horizontal plate 1301, as shown in fig. 16 and 18.
A construction method of a full liquid-connection welding stainless steel floating disc comprises the following construction steps,
determining the central position of a storage tank, determining the central position of the whole storage tank by a laser level meter and a distance meter, wherein the central position is also the reference position for splicing the floating disc, and meanwhile, setting the laser level meter at the designed height to determine the reference height of the floating disc;
determining the direction of the starting installation frame 11, and determining the direction of the starting installation frame 11 according to a design drawing so as to ensure that the installation position of the floating disc accessory is accurate;
thirdly, splicing the installation frame 11, namely splicing the installation frame 11 from inside to outside in sequence, wherein the bottom of the installation frame 11 is connected through a bolt connecting piece 113 through a bolt, and the length and width error of the center of each grid is ensured to meet the design requirement during splicing;
welding the installation frame 11, namely welding the upper direction, the left direction and the right direction of the joint of the installation beams 111 of the installation frame 11 to enable the installation frame 11 to be integrated, and dividing the whole floating disc body 1 into a plurality of independent sealed cabin structures through the installation frame 11;
step five, installing the floating boxes 12, numbering the floating boxes 12 according to an installation sequence (the numbering is mainly used for facilitating production and calculation, the sizes of the floating boxes such as the weight of the floating plates and the like are uniform in a central area, but accessories are possibly arranged on each floating plate, holes are possibly required to be formed in a designated position, once the holes are formed, the position of the floating box cannot be changed, the floating boxes in the central area need to be numbered, in addition, the floating boxes in the edge area need to be cut into a designated size for adapting to a circle, the positions after cutting cannot be changed, the floating boxes also need to be numbered, the numbering rule is according to the sequence, and the floating plates are conveniently installed at the designated positions respectively, see the attached figure 17, and the lower surfaces of the floating plate bodies 1 are connected and fastened with one another through connecting pressing strips 130;
sixthly, installing edge plates 13, namely installing the edge plates 13 at a specified position one by one, and fixing the floating box 12 and the installation frame 11 by bolts;
welding the upper surface of the floating disc body 1, and after splicing, welding the upper surface of the floating disc body 1 and the connecting gap of the edge plate 13 completely to ensure airtightness;
step eight, after welding, checking all welding seams to ensure that no cold joint and leakage exist;
step nine, installing an oil measuring and guiding column sealing device 2, an automatic vent valve 3, an edge vent valve 4, an anti-rotation device 5, a static conducting steel wire rope 6, a floating disc supporting leg 115, a manhole and a ladder stand 8 on the floating disc body 1, and referring to the attached drawing 1;
step ten, integrally checking and ending, and cleaning the site.
The following is a description of the requirements and overall structure of the inventive floating plate:
the invention relates to a novel stainless steel full-liquid-receiving welding floating disc which is mainly applied to an inner floating roof storage tank, all floating disc materials can enter the storage tank through a manhole of 600mm, construction is carried out in the storage tank, and the novel stainless steel full-liquid-receiving welding floating disc has the advantages of good sealing performance, high strength and the like.
The floating disc of the invention consists of a full liquid receiving floating box, an installation frame, an oil measuring/guide column sealing device, an automatic vent valve, an edge vent valve, an anti-rotation device, a static conductive steel wire rope, a floating disc support leg, a floating disc manhole, an edge plate, a connecting bolt and the like.
Mounting beam
In order to facilitate production and guarantee strength, the mounting beam of the mounting frame is made of a stainless steel section rectangular pipe or a square pipe, and two sides of the rectangular pipe or the square pipe are sealed, so that the strength is guaranteed, and the mounting frame also becomes a part of the buoyancy element.
In the stainless steel floating plate of the invention, the pipe size of the mounting beam material is different according to the different requirements of the diameter and buoyancy of the floating plate, mainly comprising three specifications of 150 × 150mm, 150 × 180mm and 150 × 200mm, the width of the mounting beam is generally 150 or 200mm, the height is the same as the thickness of the floating box, the length is different according to the design, in order to ensure that the elements of the floating plate can enter the storage tank from a 600mm manhole, the width of the floating box is generally 550mm, the thickness is 150 × 200mm, the length is generally less than 3m for facilitating production, transportation and installation, in the description of the invention, the floating box takes 2745 × 550 × 150mm as an example.
In the present discussion, the mounting beam is illustrated with a 150 x 150mm cross-section. In order to ensure the strength of the installation beam, the installation beam adopts a 150 x 150mm section square tube, the wall thickness adopts 1.5mm, and two ends of the installation beam are sealed, so that the installation beam is a closed square tube to ensure the strength of the floating plate, and meanwhile, the installation beam also generates certain buoyancy. Meanwhile, in order to be connected with other mounting beams, bolt connecting pieces connected with other beams are welded on the upper and lower surfaces of the middle part and the two ends of the mounting beam, and bolt connecting pieces connected with the floating disc are welded on the lower surface of the mounting beam. Because the rectangular pipe design is adopted as the girder, when the girder receives the atress of arbitrary direction, all have a face to bear the design of the biggest moment of torsion of pulling force, do not have the weak direction of the atress in each direction, intensity is balanced, and current T-beam, only from top to bottom can bear great atress, and other direction atress are very weak, and this also is the shortcoming of current concatenation floating plate.
In order to ensure the strength of the whole floating plate, in the new design of the stainless steel floating plate, no long beam and short beam exist, except for the edge beam, all the beams in the middle are in the same specification and size, and the production is facilitated. And every roof beam all is connected with other 4 roof beams, and intensity is greater than the roof beam concatenation mode of current stainless steel concatenation floating disc far away, can effectively guarantee the intensity of floating disc like this.
When the mounting beams are spliced, the top end of each beam is connected with the middle parts of other beams, and the middle parts of the beams are connected with the top ends of the other two beams at the left and right sides.
After the installation roof beam concatenation is accomplished, weld the upper, left and right three direction of installation roof beam junction, make the installation roof beam become one, not only improved intensity, simultaneously because airtight welding, make whole floating plate cut apart into a plurality of independent sealed regions by the installation roof beam, at the operation in-process, even a certain region takes place to leak or damage, because each region is independent, it is sealed respectively, similar sealed cabin structure, can not harm the sealed and buoyancy of adjacent region yet, the security performance of floating plate has further been promoted.
The floating disc landing leg mounting plate is mounted on the lower portion of the center of the beam, and the landing leg mounting plate and the connecting plate of the beam are integrated, so that the connecting stress of the landing legs is enhanced, and the weight is effectively reduced.
The connection of all the beams is dislocation installation, and in the floating plate, any one position is provided with a complete beam bearing framework, so that the risk that the T-shaped beam is easy to break along the longitudinal beam when spliced is avoided, and the overall strength of the floating plate is greatly enhanced. The beam strength produced according to the mode can be greatly enhanced, in order to ensure the strength of the whole floating plate, the beam and the floating plate are respectively produced according to the actual size of the floating plate, the distance between the two support legs is 2900mm at the point, 150X 1.5mm of the beam strength is 47.8KN/0.1 square meter, and the whole strength of the floating plate with the thickness of 150mm is 36.7KN/0.1 square meter. According to the regulation of national standard GB50341, the minimum strength of the floating disc is 2.2KN/0.1 square meter, so that the new floating disc far exceeds the national standard requirement in strength through the staggered T-shaped splicing design of the rectangular tubular beams, various operating conditions can be met, and the stability and the safety of the operation of the floating disc are effectively ensured.
Floating box
In order to ensure the sealing performance and safety of the stainless steel floating plate, the floating box adopts an all-welded form, the whole floating box is formed by a stainless steel plate metal plate, and then the closed floating box is formed by laser welding. The thickness of the buoyancy tank is different according to the stored medium and the diameter of the floating plate, as long as the buoyancy requirement is met, the thickness is generally 150 plus 200mm, the common size is 150mm, and the invention is discussed by taking 150mm as an example.
The floating boxes of the stainless steel floating plate are of rectangular structures, the width of each floating box is 550mm, the thickness of each floating box is 150mm, grid units formed by beams are square according to the splicing structure of the beams, namely the length of each floating box is an integral multiple of the width of each floating box, the length of each floating box is preferably less than 3m for convenient production, and the length of each floating box is 5-550-2750 mm.
When the floating deck is installed, personnel need be under construction above the floating deck, so the flotation tank surface need have certain holding power, so the flotation tank is inside to increase to support, according to calculating, vertically increases a bracing piece in the centre of flotation tank, in order to interconnect with other flotation tanks and erection beam, welds the bolt mounting in the flotation tank bottom.
The buoyancy tanks may be connected to the bottom of the mounting beams by bolted connections, similar to those between the buoyancy tanks and buoyancy tanks, see figure 12.
In order to improve the safety of the buoyancy tank and reduce leakage gaps, the lower surface of the buoyancy tank is not provided with welding seams, and all the welding seams are designed on the upper surface of the buoyancy tank.
The connecting mode of the floating box of the stainless steel floating plate is a bolt connecting and welding mixed mode, the lower part of the floating box is welded with a bolt connecting piece and is connected with other floating boxes and mounting beams through connecting pressing strips, then the upper surface of the floating plate adopts an argon arc welding mode to weld the floating box, other floating boxes and mounting beams into a whole, and finally the whole floating plate is of an integral structure without gaps, so that the integral strength of the floating plate is improved, the floating plate is not leaked, and the sealing performance is better.
After the installation roof beam concatenation was accomplished, formed individual sealed cabin structure between the installation roof beam, the size of every sealed cabin structure I2750 mm, pack into the flotation tank body in this square check, it is fixed to have connecting bolt at the lower surface of flotation tank body, welds all welding seams at the face of the higher authority, guarantees that whole floating disc upper surface does not have the gap of revealing. Every flotation tank body comprises 5 flotation tanks, because flotation tank production has certain error, 1.5 mm's concatenation gap is reserved to every flotation tank during production, in order to guarantee can splice smoothly, and like this, the width of every flotation tank is 550mm, 5 the width that the flotation tank occupy is 548 x 5+4 x 1.5 ═ 2746mm, the square sealed grid size that every installation roof beam is constituteed is 2750 x 2750, just so guaranteed that every limit reserves the installation clearance about 2mm, in order to guarantee that on-the-spot installation is smooth.
Like this, be the square structure basically after the concatenation of every flotation tank body is accomplished, when the installation flotation tank body, can be according to the on-the-spot condition, every flotation tank body can vertically or transversely install, all can guarantee to install smoothly, has made things convenient for the construction. During actual construction on site, the installation direction of the floating box body can be determined according to the directions of accessories, on-site pipelines and the like for the sake of attractive appearance. The floating disc of the invention not only has the advantages of fast construction speed of splicing the floating disc, but also has the advantages of high strength and no leakage of the welded floating disc.
In the prior art, the stainless steel splicing floating plate adopts a bolt connection mode between the floating box and between the floating box and the mounting beam, in order to facilitate production, the edge of the floating box is generally 20-30mm higher than the upper surface of the floating box, then the edge strips are favorable for bolt connection, and sealing gaskets are added between the connecting strips to ensure sealing. The connection mode of the buoyancy tank is beneficial to production, can reduce the production process of the buoyancy tank, has simple process, but is not beneficial to field installation. Firstly, because the edge of the buoyancy tank is generally only 20-30mm high, the distance between the installation position of the bolt and the upper surface of the buoyancy tank is about 10-15mm, most of the existing electric installation tools cannot be used, and generally only manual installation is realized, and sealing strips need to be considered, and the installation of the bolts can only be manually threaded one by one, so that the efficiency cannot be improved; secondly, because the lower surface at the flotation tank is sealed in order to guarantee, generally unable construction bolt, so the flotation tank lower surface does not have fixedly, when the storage tank pay-off oil, because the disturbance of medium can cause the flotation pontoon to fluctuate from top to bottom, causes the flotation tank junction to constantly open the closure, like this, after a period of time, causes sealed inefficacy for the roof beam that leaks of whole flotation tank greatly increases, and this is the biggest problem place of present stainless steel concatenation flotation tank.
In order to ensure the strength and the sealing efficiency, the stainless steel floating disc is characterized in that the whole floating disc is connected into a whole by adopting a bolt connection mode on the lower surface of the floating disc, the upper surface is welded completely after splicing is completed, no leakage is ensured, meanwhile, the bolt connection of the lower surface also ensures the strength between the connection of the floating boxes, and the welding seams cannot be damaged due to shearing force caused by disturbance of a medium.
Edge plate
In order to facilitate the installation of the edge seal of the stainless steel floating plate, the edge plate of the seal installation edge is arranged on the bottom plate arranged on the edge of the whole floating plate, and because the edge seal has certain pressure to the edge plate for ensuring the seal, the pressure is about dozens of kg per meter, and in order to ensure the strength, the stainless steel floating plate is made of thickened 2mm stainless steel plates and produced by using a metal plate and a welding mode.
The connection between the bottom of the buoyancy tank and the edge plate and the connection between the bottom of the installation beam and the bottom of the edge plate are the same, and a connection plate is additionally arranged at the bottom of the buoyancy tank or the installation beam and is connected with the edge plate through bolts, as shown in fig. 18.
In order to facilitate production and transportation, the length of the common edge plate is less than 3m, the edge plate of one floating disc is composed of a plurality of edge components, the edge components are firstly connected into a whole in a splicing mode on a construction site, and then the whole edge plate is integrated in a welding mode.
In order to enhance the safety of the floating disc and prevent potential safety hazards, the floating disc adopts an outward U-shaped design on the edge plate, the lower surface of the edge floating box is welded with an installation edge, the installation edge is fixed with the lower end of the U-shaped edge of the edge component by adopting a bolt, and the upper surface of the floating box is connected with the floating box into a whole by adopting a welding mode, so that the potential safety hazards caused by the permeation of media into the floating box are thoroughly avoided.
In order to improve the efficiency, the invention adopts a mode of welding bolt installation accessories, namely bolt connecting pieces, on the buoyancy tank and the installation beam to solve the bolt installation problem in the splicing process of the buoyancy tank.
The bolt mounting accessory for welding the stainless steel floating disc adopts laser cutting blanking, sheet metal forming, special nuts are pressed at the open holes, spot welding reinforcement is carried out by using special design, and then the bolt mounting accessory is welded on the bolt mounting surfaces of the floating box and the mounting frame.
Through the measures, the positioning precision of the bolt accessory is very high and is smaller than 0.5mm, the accuracy of field installation can be effectively guaranteed, the installation direction of the bolt is adjusted from horizontal installation to vertical installation, an electric tool can be adopted for installation, the field punching workload is eliminated, the floating plate installation workload is effectively reduced, and the working efficiency is improved. The lower surface is fixed by bolts, and the upper surface is welded to replace the existing full-bolt connection mode, so that the sealing reliability and the safety performance of the floating disc are improved.
Rectangular stainless steel pipes are adopted to replace T-shaped steel to serve as the mounting beams of the floating plate; the design of no main beam and auxiliary beam, and the installation beams with uniform models are used; the mounting beams are spliced in a staggered mode, so that the overall strength of the floating disc is improved; the original connection mode of punching holes on the buoyancy tank and the mounting frame is replaced by the mode of welding the bolt connection accessories on the buoyancy tank and the mounting beam, so that the sealing safety of the buoyancy tank is improved; the laser drilling is adopted to manufacture the bolt mounting accessory, so that the accuracy of the position of the bolt is ensured, the field mounting speed is increased, and the field workload is reduced; the bolt installation mode of the original splicing floating disc is changed from a horizontal installation mode to a vertical installation mode, so that the construction efficiency is improved; the edge plate is changed from an inward U-shaped design to an outward U-shaped design, so that no internal accumulated medium exists at the edge of the floating disc, and the overall safety of the floating disc is improved.
Claims (9)
1. A full-liquid-connection welding stainless steel floating disc comprises a floating disc body (1), an oil-measuring and guide column sealing device (2) arranged on the floating disc body (1), an automatic ventilation valve (3), an edge ventilation valve (4), an anti-rotation device (5), an electrostatic conducting steel wire rope (6), a floating disc support leg (115), a manhole and ladder stand (8) and an edge plate (13); the method is characterized in that: the floating disc body (1) comprises an installation frame (11) and floating boxes (12), the installation frame (11) is arranged inside an edge plate (13), the installation frame (11) is a steel structure plane grid frame, the outer contour of the installation frame (11) is circular, the installation frame (11) comprises a plurality of cell frames, and a plurality of floating boxes (12) arranged side by side are respectively embedded and connected in each cell frame; the unit cell frame is rectangular; the mounting frame (11) is formed by mutually splicing mounting beams (111) with the same specification and size in a T shape; the installation beams (111), the installation beams (111) and the floating boxes (12), the floating boxes (12) and the edge plates (13), the installation beams (111) and the floating boxes (12) are connected into a whole through bolts at connecting seams at the bottom and are connected into a whole through airtight welding at connecting seams at the upper parts.
2. The full-liquid-contact welding stainless steel floating disc as claimed in claim 1, wherein: the T-shaped splicing is that top end (1111) of installation beam (111) is adjacent to the perpendicular connection of the middle (1112) of installation beam (111) until enclosing the rectangle unit lattice frame, the unit lattice frame stretches out top end (1111) of installation beam (111) is adjacent to the perpendicular connection of the middle (1112) of installation beam (111), the T-shaped splicing is followed the body of the floating disk (1) middle extends to the outer lane and splices to edge board (13) inner circle edge is fixed.
3. The full-liquid-contact welding stainless steel floating disc as claimed in claim 2, wherein: bolt connecting pieces (113) are welded on the upper surface of the middle of each mounting beam (111) and the upper and lower surfaces of the top ends of the two ends of each mounting beam, a supporting leg mounting plate (114) is welded on the lower surface of the middle of each mounting beam (111) and has a bolt connecting piece (113) structure, connecting joints of two adjacent mounting beams (111) are fixedly connected through bolts of the bolt connecting pieces (113) or the supporting leg mounting plates (114) arranged below, and connecting joints in the upper direction, the left direction and the right direction at the connecting joints of the mounting beams (111) are hermetically welded, so that the mounting beams (111) are integrated; the bottom surface of the supporting leg mounting plate (114) is vertically fixed with floating disc supporting legs (115), and a plurality of rib plates (116) are uniformly distributed on the periphery of the floating disc supporting legs (115) and are fixedly connected with the supporting leg mounting plate (114) in a welding mode.
4. The full-liquid-contact welding stainless steel floating disc as claimed in claim 1, wherein: the buoyancy tank (12) is of a closed rectangular tank body structure, and a supporting rib plate is arranged in the buoyancy tank (12); the height of the mounting beam (111) is the same as the thickness of the buoyancy tank (12), and a plurality of buoyancy tanks (12) are arranged in the cell frame.
5. The full-liquid-contact welding stainless steel floating disc as claimed in claim 4, wherein: the two sides of the lower surface of the mounting beam (111) are provided with buoyancy tank bolt connecting pieces (1113) along the length, the buoyancy tanks (12) are correspondingly provided with the buoyancy tank bolt connecting pieces (1113), the peripheries of the lower surfaces of the buoyancy tanks (12) are adjacent to the connection seams of the frames of the unit lattice frames, the buoyancy tank bolt connecting pieces (1113) are connected and fixed in a screwed mode, and the connection seams of the buoyancy tanks (12), the buoyancy tanks (12) and the connection seams between the frames of the unit lattice frames are sealed in an airtight welding mode on the upper surfaces.
6. The full-liquid-contact welding stainless steel floating disc as claimed in claim 4, wherein: the bottom of the two adjacent buoyancy tanks (12) or the buoyancy tank (12) and the bottom of the adjacent mounting beam (111) are fixedly connected through a connecting batten (130), the connecting pressing strip (130) comprises a U-shaped strip (131) and a U-shaped pressing strip (132), two U-shaped strips (131) with parallel upward notches are symmetrically welded on two sides of a splicing seam at the bottoms of two adjacent floating boxes (12), the U-shaped pressing strip (132) is arranged at the bottom of each U-shaped strip (131), the notches of the U-shaped pressing strips (132) are upwards covered and buckled on the two U-shaped strips (131), a plurality of compression nuts (133) are arranged at the bottom of the U-shaped groove of the U-shaped strip (131) along the length direction, the compression nut (133) corresponds to a through hole formed in the bottom plate of the U-shaped pressing strip (132) and is inserted with a bolt to fix the U-shaped pressing strip (132) and the two U-shaped strips (131) in a threaded mode.
7. The full-liquid-contact welding stainless steel floating disc as claimed in claim 3, wherein: the mounting beam (111) is a stainless steel pipe with two closed ends and a square cross section; the unit cell frame is square; the cell frame and the buoyancy tank (12) close to the edge of the floating disc are naturally formed along with the circle.
8. The full-liquid-contact welding stainless steel floating disc as claimed in claim 1, wherein: the upper end and the lower end of the edge plate (13) are horizontally bent to the outside by a section of bending edge, the inner side surface of the edge plate (13) is abutted against the side surface of the floating box (12) at the edge of the floating disc body (1), the upper surface of the floating box (12) is tightly attached to the bottom surface of a horizontal plate (1301) welded on the inner side surface of the middle part of the edge plate (13), and the bottom surface of the floating box (12) is welded with a horizontal connecting plate (1302), extends to the outside and then is overlapped and screwed with the lower bending edge of the edge plate (13); the upper surface of the floating disc body (1) is welded with an edge plate (13) in a connecting gap completely, namely the upper surfaces of the floating box (12) and the mounting beam (111) at the edge are welded with the edge plate (13) in an airtight connecting gap; the mounting beam (111) is overlapped, screwed and fixed with the lower bending edge of the edge plate (13) through a bolt connecting piece (113) or a supporting leg mounting plate (114); the upper surface of the mounting beam (111) is tightly attached to the bottom surface of the horizontal plate (1301) and is in airtight welding connection.
9. A construction method for welding a stainless steel floating disc by full liquid connection is characterized by comprising the following steps: comprises the following construction steps of the following steps of,
determining the central position of a storage tank, determining the central position of the whole storage tank by a laser level meter and a distance meter, wherein the central position is also the reference position for splicing the floating disc, and meanwhile, setting the laser level meter at the designed height to determine the reference height of the floating disc;
determining the direction of the initial installation frame (11), and determining the direction of the initial installation frame (11) according to a design drawing so as to ensure that the installation position of the floating disc accessory is accurate;
splicing the installation frame (11), namely sequentially splicing the installation frame (11) from inside to outside, wherein the bottom of the installation frame (11) is connected through a bolt connecting piece (113), and the length and width error of the center of each grid is ensured to meet the design requirement during splicing;
welding the installation frame (11), namely welding the upper direction, the left direction and the right direction of the joint of the installation beams (111) of the installation frame (11) to enable the installation frame (11) to be integrated, and dividing the whole floating disc body (1) into a plurality of independent sealed cabin structures through the installation frame (11);
fifthly, installing the floating boxes (12), wherein the floating boxes (12) are respectively installed at the designated positions according to the installation sequence numbers, and the lower surfaces of the floating plate bodies (1) are mutually connected and fastened by using connecting pressing strips (130);
sixthly, installing edge plates (13), namely installing the edge plates (13) at a specified position one by one, and fixing the buoyancy tank (12) and the installation frame (11) by bolts;
welding the upper surface of the floating disc body (1), and after splicing, welding the upper surface of the floating disc body (1) and the connecting gap of the edge plate (13) completely to ensure airtightness;
step eight, after welding, checking all welding seams to ensure that no cold joint and leakage exist;
ninthly, mounting an oil measuring and guide column sealing device (2), an automatic vent valve (3), an edge vent valve (4), an anti-rotation device (5), a static conductive steel wire rope (6), a floating plate supporting leg (115), a manhole and a ladder stand (8) on the floating plate body (1);
step ten, integrally checking and ending, and cleaning the site.
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| CN113602690A (en) * | 2021-09-07 | 2021-11-05 | 河北科容油站设备有限公司 | Inner floating roof storage tank sealing assembly |
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| 孔昭瑞;: "我国组装式浮盘的发展与建议", 油气储运, no. 11, 25 November 2010 (2010-11-25), pages 801 - 805 * |
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| CN113306895A (en) * | 2021-06-17 | 2021-08-27 | 中弘致远建设有限公司 | High-strength light anti-static hollow floating disc |
| CN113306895B (en) * | 2021-06-17 | 2022-03-08 | 中弘致远建设有限公司 | High-strength light anti-static hollow floating disc |
| CN113602690A (en) * | 2021-09-07 | 2021-11-05 | 河北科容油站设备有限公司 | Inner floating roof storage tank sealing assembly |
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| CN111268293B (en) | 2024-06-04 |
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