CN111268293B - Full-liquid-receiving welding stainless steel floating disc and construction method - Google Patents
Full-liquid-receiving welding stainless steel floating disc and construction method Download PDFInfo
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- CN111268293B CN111268293B CN202010262168.5A CN202010262168A CN111268293B CN 111268293 B CN111268293 B CN 111268293B CN 202010262168 A CN202010262168 A CN 202010262168A CN 111268293 B CN111268293 B CN 111268293B
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- 238000007667 floating Methods 0.000 title claims abstract description 256
- 238000003466 welding Methods 0.000 title claims abstract description 67
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 47
- 239000010935 stainless steel Substances 0.000 title claims abstract description 47
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 238000009423 ventilation Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 72
- 238000003860 storage Methods 0.000 claims description 17
- 238000005452 bending Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims 2
- 241000282326 Felis catus Species 0.000 claims 1
- 125000003003 spiro group Chemical group 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 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
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000009193 crawling Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 206010000369 Accident Diseases 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000009825 accumulation Methods 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
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
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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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a full liquid-receiving welding stainless steel floating disc and a construction method thereof, wherein the full liquid-receiving welding stainless steel floating disc comprises a floating disc body, an oil measuring and guiding column sealing device, an automatic ventilation valve, an edge ventilation valve, an anti-rotation device, an electrostatic guiding steel wire rope, floating disc supporting legs, manholes, a ladder and an edge plate; the floating disc body comprises a mounting frame and floating boxes, wherein the mounting frame is arranged in the edge plate, the mounting frame is a steel structure plane grid frame, the mounting frame is round, the mounting frame comprises a plurality of unit grid frames, and the floating boxes arranged side by side are respectively embedded and connected in the unit grid frames; the unit grid 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 disc has high integral strength, no leakage and good sealing performance.
Description
Technical Field
The invention relates to the technical field of floating roof storage tank floating disc sealing, in particular to a full-liquid-receiving welding stainless steel floating disc and a construction method.
Background
With the large-scale of oil storage tanks and oil reservoirs, the requirements for floating-roof oil storage tank floating disc sealing are also increasing. In recent years, lightning strike and fire accident of a sealing ring of a floating disc of the storage tank frequently occur, and the reasons for the lightning strike and fire accident are generally that the sealing of the floating disc leaks, and explosive gas exists between the sealing of the floating disc of the storage tank; the sealing leakage of the oil tank also causes volatilization of a large amount of hydrocarbon gas, so that the problem of environmental pollution is outstanding, and the air quality is seriously affected; 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 trays of the inner floating roof oil tank in China are various in types, and the floating trays comprise an aluminum floating barrel type inner floating tray, a full liquid receiving floating box type aluminum floating tray, a stainless steel splicing floating tray, a steel floating tray and the like, and the floating trays have advantages and disadvantages.
The aluminum float type floating disc has the advantages of light weight, simple installation, low manufacturing cost and the like, but the volatilization loss of part of oil products can be caused due to a certain evaporation space between the floating disc skin and the oil surface. The full liquid-receiving box type aluminum floating disc and the spliced stainless steel floating disc have full liquid-receiving property, but have poor strength, the joint is not tightly sealed, the flooding is possibly caused, the accident of sinking the full liquid-receiving inner floating disc is more recently caused, and most of the accidents are caused by the flooding or poor strength. The steel floating plate has poor corrosion resistance, is easy to pollute oil products and is difficult to install, so that the problem needs to be solved.
Disclosure of Invention
The invention provides a full-liquid-connection welding stainless steel floating disc and a construction method, and aims to solve the problems that an existing floating disc is poor in stability and strength, and a joint is not tightly sealed and is easy to volatilize oil products.
The invention adopts the following technical scheme:
A full liquid-receiving welding stainless steel floating disc comprises a floating disc body, an oil measuring and guiding column sealing device, an automatic ventilation valve, an edge ventilation valve, an anti-rotation device, an electrostatic guiding wire rope, floating disc supporting legs, manholes, a ladder stand and an edge plate, wherein the oil measuring and guiding column sealing device is arranged on the floating disc body; the floating disc body comprises a mounting frame and floating boxes, the mounting frame is arranged in the edge plate, the mounting frame is a steel structure plane grid frame, the outer outline of the mounting frame is circular, the mounting frame comprises a plurality of unit grid frames, and the floating boxes arranged side by side are respectively embedded and connected in the unit grid frames; the unit grid 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 buoyancy tanks and the edge plates are connected with the installation beams and the buoyancy tanks through bolts at bottom connecting joints and are connected into an integral structure through airtight welding at upper connecting joints.
The T-shaped splicing is characterized in that the top end of the mounting beam is vertically connected with the middle of the adjacent mounting beam until the top end of the mounting beam is surrounded into a rectangular unit grid frame, the top end of the mounting beam extending out of the unit grid frame is vertically connected with the middle of the adjacent mounting beam, and the T-shaped splicing extends from the middle of the floating disc body to the outer ring and is spliced to the edge of the inner ring of the edge plate for fixing.
The upper surface of the middle of the mounting beam is welded with the upper surface and the lower surface of the top ends of the two ends, the lower surface of the middle of the mounting beam is welded with a supporting leg mounting plate and also has a bolt connecting piece structure, two adjacent mounting beam connecting joints are fixedly connected through the bolts of the lower bolt connecting pieces or the supporting leg mounting plate, and the upper, left and right connecting joints at the mounting beam connecting joints are hermetically welded, so that the mounting beam is integrated; the bottom surface of the supporting leg mounting plate is vertically fixed with the floating plate supporting leg, and a plurality of rib plates are uniformly distributed around the floating plate supporting leg and 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 unit grid frame.
The two sides of the lower surface of the mounting beam are provided with buoyancy tank bolt connectors along the length, the buoyancy tanks are correspondingly provided with buoyancy tank bolt connectors, the periphery of the lower surface of each buoyancy tank is in threaded connection and fixation with the adjacent frame connecting joints of the unit grid frame through the buoyancy tank bolt connectors, and the connecting joints of the two adjacent buoyancy tanks and the connecting joints between the frames of the buoyancy tank and the unit grid frame are hermetically welded and sealed on the upper surface.
Two adjacent buoyancy tanks or buoyancy tanks and the bottom of the adjacent installation beam are fixedly connected through connecting press bars, each connecting press bar comprises a U-shaped bar and a U-shaped press bar, two parallel U-shaped bars with upward notches are symmetrically welded on two sides of a splicing seam at the bottom of each buoyancy tank, two U-shaped press bars are arranged at the bottom of each U-shaped bar, the U-shaped bar notches are upwards covered and buckled on the two U-shaped bars, a plurality of compression nuts are arranged at the bottoms of the U-shaped grooves of the U-shaped bars along the length direction, and the compression nuts correspond to through holes formed in the bottom plates of the U-shaped press bars and are inserted into bolts to fix the U-shaped press bars with the two U-shaped bars in a threaded manner.
The mounting beam is a stainless steel tube with two closed ends and a square cross section; the unit grid frame is square; the unit grid frame and the buoyancy tank 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 both outwards and horizontally bent at a bending edge, the inner side surface of the edge plate is tightly 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 abutted against 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 and outwards extended and then is overlapped and screwed with the lower bending edge of the edge plate to be fixed; the upper surface of the floating disc body is welded with the edge plate connecting gap completely, namely the upper surfaces of the floating box and the mounting beam at the edge are welded with the edge plate connecting gap in an airtight manner; the mounting beam is overlapped and screwed with the lower bending 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 adhered to the bottom surface of the horizontal plate and is in airtight welding connection.
A construction method for welding a stainless steel floating disc by full liquid connection, which comprises the following construction steps,
Step one, determining the central position of a storage tank, determining the central position of the whole storage tank by a laser level meter and a range finder, wherein the position is also the reference position for splicing floating plates, and simultaneously setting the laser level meter at the design height to determine the reference height of the floating plates;
Determining the direction of the initial installation frame, and determining the direction of the initial installation frame according to the design drawing so as to ensure that the installation position of the floating disc accessory is accurate;
Splicing the mounting frames, namely splicing the mounting frames from inside to outside sequentially, wherein the bottoms of the mounting frames are connected through bolt connecting pieces in a bolt mode, and the length and width errors of the centers of all grids are guaranteed to meet design requirements during splicing;
Welding the mounting frame, namely welding the upper, left and right directions of the joint of the mounting beam of the mounting frame to integrate the mounting frame, and dividing the whole floating disc body into a plurality of independent sealed cabin structures through the mounting frame;
step five, installing the floating boxes, namely respectively installing the floating boxes to specified positions according to the installation sequence numbers, and connecting and fastening the floating boxes to each other on the lower surface of the floating disc body by using a connecting pressing strip;
Step six, installing edge plates, namely installing the edge plates to the designated positions block by block, and fixing the buoyancy tanks and the installation frame by bolts;
welding the upper surface of the floating disc body, and completely welding the upper surface of the floating disc body and the edge plate connecting gaps after the splicing is completed so as to ensure the air tightness;
Step eight, after welding, checking all welding seams, and ensuring no false welding and leakage;
Step nine, installing an oil measuring and guiding column sealing device, an automatic ventilation valve, an edge ventilation valve, an anti-rotation device, an electrostatic conduction steel wire rope, a floating disc supporting leg, a manhole and a crawling ladder on the floating disc body;
and step ten, integrally checking, ending and cleaning the scene.
The invention has the following advantages:
1. The installation frames of the stainless steel floating disc are formed by mutually splicing the installation beams in a T shape, all the installation beams in the middle are of the same specification and size except the edge beams, the production is facilitated, the top parts and the middle parts of the two ends of each installation beam are connected with the other 4 installation beams, and all the installation beams are connected into a large grid structure, so that the whole floating disc is integrated, no weak point exists, the design strength is far greater than that of the existing T-shaped beam splicing mode of the stainless steel spliced floating disc, and the strength of the floating disc can be effectively ensured;
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, the bolt connection and the welding mixed mode are adopted, the bolt connection is completed through welding a bolt connecting piece on the floating box and the installation beam, the floating boxes are respectively connected with two U-shaped strips in a threaded manner through the U-shaped pressing strips at the bottom, so that the field installation speed is increased, and the field workload is reduced; then, the floating boxes, the mounting beams and the floating boxes are welded with each other in an argon arc welding mode on the upper surface of the floating disc to form a whole with other floating boxes and mounting frames in an airtight mode, so that the whole floating disc is of an integrated structure without gaps, the integral strength of the floating disc is improved, the floating disc is free from leakage, and the sealing performance is good;
3. The installation frame is made of stainless steel section rectangular pipes or square pipes, both sides of the rectangular pipes or square pipes are sealed, so that the strength is ensured, and the installation frame also becomes a part of the buoyancy element. Because the rectangular pipe design is adopted as the girder, when the girder receives the stress in any direction, the design that one surface bears the maximum torque of the tensile force is adopted, and the girder does not have the weak stress direction in all directions and has balanced strength. The floating disc support leg mounting plate is arranged at the lower part of the center of the mounting beam, and the support leg mounting plate is combined with the bolt connecting piece of the mounting beam, so that the connection stress of the support legs is enhanced, and the weight is effectively reduced;
4. Because airtight welding for whole floating disc is cut apart into a plurality of independent seal areas by the installation roof beam, in the operation in-process, even a certain region takes place to leak or damage, because each region is independent, seals respectively, similar sealed cabin structure, also can not harm the sealing and the buoyancy of adjacent region, has further promoted the security performance of floating disc.
Description of the drawings:
FIG. 1 is a schematic view of a floating plate in elevation assembly according to the present invention.
FIG. 2 is a schematic view of a floating plate assembly according to the present invention.
Fig. 3 is a schematic view of a mounting beam of the present invention.
Fig. 4 is a schematic diagram of a local positional connection relationship of the mounting frame according to the present invention.
FIG. 5 is a schematic view of a T-splice of a mounting frame portion structure according to the present invention.
FIG. 6 is a schematic view of a T-splice of the overall structure of the mounting frame of the present invention.
FIG. 7 is a schematic view of a partial position structure of a mounting frame according to the present invention.
FIG. 8 is a schematic view of the mounting locations of the float support legs and mounting frame of the present invention.
FIG. 9 is a schematic diagram of the leg fixing method of the present invention.
FIG. 10 is a schematic view of the airtight welded seal of the upper surfaces of a plurality of buoyancy tanks according to the present invention.
FIG. 11 is a schematic diagram of the connection relationship between buoyancy tanks according to 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 lower surface bolting of the buoyancy tank of the present invention.
Fig. 14 is a schematic view of the structure of the U-shaped strip of the present invention.
FIG. 15 is a schematic diagram of a conventional structure of an edge plate and a buoyancy tank.
FIG. 16 is a schematic view of the connection between an edge plate and a buoyancy tank according to the present invention.
FIG. 17 is a schematic diagram showing the distribution of buoyancy tanks according to design numbers.
FIG. 18 is a schematic diagram of the connection between an edge plate and a buoyancy tank according to the present invention.
Reference numerals:
1-floating disc body, 11-mounting frame, 111-mounting beam, 113-bolt connector, 114-supporting leg mounting plate, 115-floating disc supporting leg, 116-rib plate, 12-floating box, 13-edge plate, 130-connecting layering, 131-U-shaped strip, 132-U-shaped layering, 133-gland nut, 1301-horizontal plate, 1302-connecting plate, 1303-connecting bolt, 2-oil and guide column sealing device, 3-automatic ventilation valve, 4-edge ventilation valve, 5-rotation preventing device, 6-static electricity conducting steel wire rope, 7-low manhole, 8-manhole and ladder, 9-first-stage sealing, 10-liquid level meter, 121-floating box inner welding reinforcing rib position, 1110-welding position between mounting beams, 1111-top end of mounting beam, 1112-middle of mounting beam, 1113-floating box bolt connector
The specific embodiment is as follows:
the following describes the embodiments of the present invention further with reference to the drawings.
As shown in fig. 1 and 2, the full liquid-receiving welding stainless steel floating disc comprises a floating disc body 1, an oil measuring and guiding column sealing device 2, an automatic ventilation valve 3, an edge ventilation valve 4, an anti-rotation device 5, an electrostatic guiding steel wire rope 6, a floating disc supporting leg 115, a manhole, a crawling ladder 8 and an edge plate 13, wherein the oil measuring and guiding column sealing device is arranged on the floating disc body 1; the floating disc body 1 comprises a mounting frame 11 and floating boxes 12, wherein the mounting frame 11 is arranged inside the edge plate 13, the mounting frame 11 is a steel structure plane grid frame, the outer outline of the mounting frame 11 is circular, the mounting frame 11 comprises a plurality of unit grid frames, and the floating boxes 12 arranged side by side are respectively embedded and connected in the unit grid frames; the unit grid 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 through bolts at bottom connecting joints and are all connected into an integral structure through airtight welding at upper connecting joints.
The T-shaped splice is that the top 1111 of the mounting beam 111 is vertically connected with the middle 1112 of the adjacent mounting beam 111 until the rectangular unit grid frame is enclosed, the top 1111 of the mounting beam 111 extending from the unit grid frame is vertically connected with the middle 1112 of the adjacent mounting beam 111, and the T-shaped splice extends from the middle of the floating disc body 1 to the outer ring and is spliced to the inner ring edge of the edge plate 13, which is fixed, see fig. 4, 5, 6 and 7.
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 are welded with bolt connecting pieces 113, the lower surface of the middle of the mounting beam 111 is welded with a supporting leg mounting plate 114 and also has a bolt connecting piece 113 structure, two adjacent mounting beam 111 connecting joints are connected and fixed through bolts of the bolt connecting pieces 113 or the supporting leg mounting plate 114 arranged below, and the upper, left and right connecting joints at the connecting joints of the mounting beam 111 are hermetically welded, so that the mounting beam 111 is integrated; the bottom surface of the supporting leg mounting plate 114 is vertically fixed with a floating plate supporting leg 115, and a plurality of rib plates 116 are uniformly distributed around the floating plate supporting leg 115 and are fixedly connected with the supporting leg mounting plate 114 in a welding way, see fig. 3,4, 8 and 9.
The buoyancy tank 12 is of a closed rectangular tank body structure, and a supporting 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 tanks 12, and a plurality of buoyancy tanks 12 are arranged in the unit grid frame, see fig. 1, 2, 10, 11, 12, 13 and 17.
The two sides of the lower surface of the mounting beam 111 are provided with floating box bolt connectors 1113 along the length, the floating boxes 12 are correspondingly provided with floating box bolt connectors 1113, the periphery of the lower surface of each floating box 12 is in screwed connection and fixation with the adjacent frame connecting joints of the unit grid frame through the floating box bolt connectors 1113, and the connecting joints of the adjacent two floating boxes 12 and the connecting joints between the floating boxes 12 and the frames of the unit grid frame are hermetically welded and sealed on the upper surface, see fig. 4, 11, 12 and 13.
Two adjacent buoyancy tanks 12 or the bottoms of the buoyancy tanks 12 and the adjacent mounting beams 111 are fixedly connected through a connecting pressing strip 130, the connecting pressing strip 130 comprises a U-shaped strip 131 and a U-shaped pressing strip 132, two parallel U-shaped strips 131 with upward notches are symmetrically welded on two sides of a splicing seam at the bottom of each buoyancy tank 12, the U-shaped strips 132 are arranged at the bottoms of the two U-shaped strips 131, the notches of the U-shaped strips 132 are upwards covered and buckled on the two U-shaped strips 131, a plurality of compression nuts 133 are arranged at the bottoms of the U-shaped grooves of the U-shaped strips 131 along the length direction, and the compression nuts 133 correspond to through holes formed in the bottom plates of the U-shaped strips 132 and are inserted into bolts to fix the U-shaped strips 132 with the two U-shaped strips 131 in a threaded manner respectively, see figures 10, 11, 12, 13 and 14.
The mounting beam 111 is a stainless steel tube with two closed ends and a square cross section; the unit grid frame is square; the cell frame, buoyancy tank 12, adjacent the edge of the float plate is naturally shaped with the circle.
The upper end and the lower end of the edge plate 13 are both horizontally bent outwards to form a bending edge, the inner side surface of the edge plate 13 is tightly abutted against the side surface of the floating box 12 at the edge of the floating plate body 1, the upper surface of the floating box 12 is tightly abutted against 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 and is overlapped and screwed with the lower bending edge of the edge plate 13 after being outwards extended; all the connection gaps between the upper surface of the floating disc body 1 and the edge plate 13 are welded, namely the upper surfaces of the floating box 12 and the mounting beam 111 at the edge are hermetically welded with the connection gaps between the edge plate 13; the mounting beam 111 is overlapped and screwed 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 connected by airtight welding to the bottom surface of the horizontal plate 1301, see fig. 16 and 18.
A construction method for welding a stainless steel floating disc by full liquid connection, which comprises the following construction steps,
Step one, determining the central position of a storage tank, determining the central position of the whole storage tank by a laser level meter and a range finder, wherein the position is also the reference position for splicing floating plates, and simultaneously setting the laser level meter at the design height to determine the reference height of the floating plates;
step two, 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 mounting frames 11, namely splicing the mounting frames 11 from inside to outside sequentially, and connecting the bottoms of the mounting frames 11 through bolts by using bolt connecting pieces 113, wherein the length and width errors of the centers of all grids are ensured to meet the design requirements during splicing;
Welding the mounting frame 11, namely welding the upper, left and right directions of the joint of the mounting beam 111 of the mounting frame 11 to integrate the mounting frame 11, and dividing the whole floating disc body 1 into a plurality of independent sealed cabin structures through the mounting frame 11;
step five, installing the buoyancy tanks 12, namely numbering the buoyancy tanks 12 according to an installation sequence (the numbering is mainly used for facilitating production and calculation, the buoyancy tanks such as the weight of the buoyancy discs are of uniform specification in a central area, accessories possibly exist on each buoyancy disc, holes possibly need to be formed in a designated position, once the holes are formed, the positions of the buoyancy tanks cannot be changed, so that the buoyancy tanks in the central area are numbered;
step six, installing the edge plates 13 to the designated positions block by block, and fixing the buoyancy tank 12 and the installation frame 11 by bolts;
welding the upper surface of the floating disc body 1, and completely welding the upper surface of the floating disc body 1 and the connecting gaps of the edge plates 13 after the splicing is completed so as to ensure the airtight;
Step eight, after welding, checking all welding seams, and ensuring no false welding and leakage;
step nine, installing an oil measuring and guiding column sealing device 2, an automatic ventilation valve 3, an edge ventilation valve 4, an anti-rotation device 5, an electrostatic conduction wire rope 6, a floating disc supporting leg 115, a manhole and a crawling ladder 8 on the floating disc body 1, wherein the figure 1 is shown;
and step ten, integrally checking, ending and cleaning the scene.
The following is a description of the requirements and overall structure of the floating disc of the invention:
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 from a 600mm manhole, and construction is carried out in the storage tank.
The floating disc consists of a full-liquid-receiving floating box, a mounting frame, an oil measuring/guiding column sealing device, an automatic ventilation valve, an edge ventilation valve, an anti-rotation device, an electrostatic conduction steel wire rope, floating disc supporting legs, a floating disc manhole, an edge plate, a connecting bolt and the like.
Mounting beam
In order to facilitate production and ensure strength, the mounting beam of the mounting frame is manufactured by rectangular pipes or square pipes of stainless steel profiles, and both sides of the rectangular pipes or square pipes are sealed, so that the strength is ensured, and the mounting frame also becomes a part of the buoyancy element.
In the stainless steel floating disc, the pipe size of the installation beam material is also different according to the different diameter and buoyancy requirements of the floating disc, the pipe size is mainly 150 x 150mm,150 x 180mm and 150 x 200mm, the width of the installation beam is generally 150 or 200mm, the height is the same as the thickness of a floating box, the length is different according to the different designs, in order to ensure that elements of the floating disc can enter a 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, and the floating box is 2745 x 550 x 150mm for example in the description of the invention.
In the present discussion, the mounting beam is exemplified by a 150 x 150mm cross section. In order to ensure the strength of the installation beam, the installation beam adopts square pipes with 150mm sections, the wall thickness adopts 1.5mm, and the two ends of the installation beam are sealed, so that the installation beam is a sealed square pipe to ensure the strength of the floating disc, and meanwhile, the installation beam also generates certain buoyancy. And simultaneously, in order to be connected with other mounting beams, bolt connectors connected with other beams are welded on the upper and lower surfaces of the middle part and the two ends of the mounting beams, and simultaneously, bolt connectors connected with floating discs are welded on the lower surface of the mounting beams. Because the rectangular pipe design is adopted as the girder, when the girder receives the stress in any direction, the design of the maximum torque of the tensile force born by one surface is adopted, the weak stress direction in each direction is avoided, the strength is balanced, the existing T-shaped girder only can bear larger stress from top to bottom, and the stress in other directions is very weak, thus the defect of the existing spliced floating disc is overcome.
In order to ensure the strength of the whole floating disc, in the new stainless steel floating disc design, long beams and short beams are not arranged, and all beams in the middle except edge beams are of the same specification and size, so that the production is facilitated. And every roof beam 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 beams are assembled, the top end of each beam is connected with the middle parts of other beams, the middle parts of the beams are connected with the top ends of the other two beams in a left-right mode, through the design, all the beam connections are called a large grid structure, and the buoyancy tanks are installed in the grids, so that the whole floating disc is integrated, and weak points do not exist.
After the installation beam is spliced, the upper direction, the left direction and the right direction of the connection part of the installation beam are welded, so that the installation beam is integrated, the strength is improved, meanwhile, due to airtight welding, the whole floating disc is divided into a plurality of independent sealing areas by the installation beam, even if one area is leaked or damaged in the operation process, the sealing cabin is similar to a sealing cabin structure due to the independent sealing of each area, the sealing and buoyancy of the adjacent areas are not damaged, and the safety performance of the floating disc is further improved.
The floating disc support leg mounting plate is arranged at the lower part of the center of the beam, and the support leg mounting plate is integrated with the connecting plate of the beam, so that the connection stress of the support legs is enhanced, and the weight is effectively reduced.
All beams are connected in a staggered mode, and in any one position of the floating disc, a complete beam bearing skeleton is arranged, so that the risk that the T-shaped beams are easy to break along the longitudinal beams during splicing is avoided, and the integral strength of the floating disc is greatly enhanced. The beam produced in this way can be greatly reinforced in strength, and to ensure the overall float strength, the beam and float are produced according to the actual float dimensions respectively, between the two legs, the beam and float are weak points in strength, at which point the test leg spacing 2900mm,150 x 1.5mm beam strength is 47.8KN/0.1 square meter, and the 150mm float overall strength is 36.7KN/0.1 square meter. According to national standard GB50341, the minimum strength of the floating disc is 2.2KN/0.1 square meter, so that the novel floating disc is far more than the national standard in strength through the staggered T-shaped splicing design of the rectangular tubular beams, various operation conditions can be met, and the stability and safety of operation of the floating disc are effectively ensured.
Floating box
In order to ensure tightness and safety, the stainless steel floating disc is formed by forming the whole floating box by a stainless steel plate metal plate in a full welding mode, and then the whole floating box is welded into a closed floating box by laser, wherein the thickness of the stainless steel floating box is 1.2mm and the width of the stainless steel floating box is 550mm so as to meet national standard, and the stainless steel floating disc can conveniently pass in and out a circular shape with the diameter of 600mm from a manhole of a storage tank. The thickness of the buoyancy tank varies depending on the medium to be stored and the diameter of the buoyancy disc, and is generally 150-200mm, with a typical dimension of 150mm, as long as the buoyancy requirement is met, and the invention is discussed in terms of 150 mm.
The buoyancy tanks of the stainless steel floating disc are of cuboid structures, the width is 550mm, the thickness is 150mm, grid units formed by the beams are square according to the splicing structure of the beams, namely, the lengths of the buoyancy tanks are integer multiples of the width, the lengths of the buoyancy tanks are preferably smaller than 3m for convenient production, and the lengths of the buoyancy tanks are L=5x550=2750mm.
When the floating plate is installed, personnel need to construct above the floating plate, so the surface of the floating box needs to have certain supporting force, the inside of the floating box needs to be additionally supported, a supporting rib is longitudinally added in the middle of the floating box according to calculation, and a bolt fixing piece is welded at the bottom of the floating box for interconnection with other floating boxes and installation beams.
The buoyancy tanks and the bottoms of the mounting beams can be connected by bolt connectors, similar to the buoyancy tanks and buoyancy tanks, see fig. 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 welding seams are designed on the upper surface of the buoyancy tank.
The floating box of the stainless steel floating disc is connected in a bolt connection and welding mixed mode, the lower part of the floating box is welded with the bolt connecting piece, the floating box is connected with other floating boxes and the mounting beam through the connecting pressing strips, then the upper surface of the floating disc is welded into a whole by adopting an argon arc welding mode, and finally the whole floating disc is of an integral structure without gaps, so that the integral strength of the floating disc is improved, the floating disc is free from leakage, and the sealing performance is better.
After the installation beams are spliced, a plurality of sealing bin structures are formed between the installation beams, the size of each sealing bin structure is 2750mm, a buoyancy tank body is filled in the square grid, connecting bolts are fixed on the lower surface of the buoyancy tank body, all welding seams are welded on the upper surface, and no leakage gap on the upper surface of the whole buoyancy disc is ensured. Each buoyancy tank body is composed of 5 buoyancy tanks, and each buoyancy tank is reserved with a splicing gap of 1.5mm during production due to certain errors, so that smooth splicing can be guaranteed, the width of each buoyancy tank is 550mm, the occupied width of each buoyancy tank is 548 x 5+4 x 1.5=2746 mm, the size of a square sealing lattice formed by each mounting beam is 2750 x 2750, and therefore the mounting gap of about 2mm is reserved on each side, and on-site mounting is guaranteed to be smooth.
Therefore, after the splicing of each floating box body is completed, the floating box body is basically of a square structure, when the floating box bodies are installed, each floating box body can be longitudinally or transversely installed according to the site conditions, smooth installation can be ensured, and construction is facilitated. In the actual construction on site, the buoyancy tank body can determine the installation direction according to the directions of accessories, on-site pipelines and the like for attractive appearance. The floating plate has the advantages of high construction speed of the spliced floating plate, high strength of the welded floating plate and no leakage.
In the prior art, the stainless steel spliced floating disc is connected between the floating boxes and the mounting beam by bolts, so that the edge of the floating box is 20-30mm higher than the upper surface of the floating box in order to be beneficial to production, then the edge strip is beneficial to bolt connection, and a sealing gasket is added between the connecting strips to ensure sealing. The buoyancy tank connection mode is beneficial to production, can reduce the production process of the buoyancy tank, has simple process, and is unfavorable for field installation. Firstly, as the edge of the buoyancy tank is only 20-30mm in height, the bolt installation position is about 10-15mm away from the upper surface of the buoyancy tank, most of the existing electric installation tools cannot be used, and the existing electric installation tools can only be manually installed, sealing strips are required to be considered, and the bolts can only be manually threaded one by one, so that the efficiency cannot be improved; secondly, because the lower surface of the floating box is generally incapable of being provided with bolts for ensuring sealing, the lower surface of the floating box is not fixed, when the storage tank receives and pays oil, the floating disc can be caused to fluctuate due to disturbance of a medium, and the connecting part of the floating box is continuously opened and closed, so that after a period of time, sealing failure is caused, the leakage beam of the whole floating disc is greatly increased, and the problem of the stainless steel spliced floating disc is the greatest.
In order to ensure the strength and sealing efficiency, the stainless steel floating disc is connected with the whole floating disc into a whole by adopting a bolt connection mode on the lower surface of the floating disc, and the upper surface is welded completely after the splicing is finished, so that no leakage is ensured, and meanwhile, the strength between the connection of the floating boxes is ensured by the bolt connection on the lower surface, so that the welding seam is not damaged due to shearing force caused by disturbance of a medium.
Edge plate
In order to facilitate the installation of edge sealing, the stainless steel floating disc is provided with the edge plate with the sealing installation edge on the edge installation bottom plate of the whole floating disc, and because the edge sealing has a certain pressure on the edge plate for ensuring sealing, the pressure is about tens of kg per meter, and in order to ensure strength, the stainless steel floating disc is manufactured by adopting a thickened 2mm stainless steel plate and is produced by adopting a sheet metal and welding mode.
The bottom connection mode of the buoyancy tank and the edge plate and the bottom connection mode of the mounting beam and the edge plate are the same, namely, a connecting plate is additionally arranged at the bottom of the buoyancy tank or the mounting beam, and the connecting plate is connected with the edge plate through bolts, and the figure 18 is seen.
In order to facilitate production and transportation, the length of the edge plate is generally less than 3m, the edge plate of one floating disc is composed of a plurality of edge members, the edge plates are connected into a whole in a construction site in a splicing mode, 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 is designed to be in an outward U-shaped design on the edge plate, the lower surface of the edge floating box is welded with the installation edge, the installation edge is fixed with the U-shaped lower end of the edge member by bolts, 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 medium infiltration inside the floating box are thoroughly eliminated.
In order to improve efficiency, the invention adopts a mode of welding bolt installation accessories, namely bolt connecting pieces, on the floating box and the installation beam to solve the problem of bolt installation in the floating plate splicing process.
The bolt mounting accessory for welding the stainless steel floating disc is manufactured by adopting laser cutting and blanking, sheet metal forming, crimping a special nut at an opening, reinforcing by using special design spot welding, and then welding the bolt mounting accessory on the bolt mounting surfaces of the floating box and the mounting frame.
Through these measures for the positioning accuracy of bolt annex is very high, is less than 0.5mm, can effectively guarantee the accuracy of on-the-spot installation, and the installation direction of bolt is adjusted to vertical installation by horizontal installation, can adopt electric tool to install like this, has cancelled on-the-spot trompil work load simultaneously, the effectual floating disc installation work load that has reduced has improved work efficiency. The lower surface is fixed by bolts, and the upper surface welding mode replaces the existing full-bolt connection mode, so that the sealing reliability and the safety performance of the floating disc are improved.
Rectangular stainless steel tubes are used for replacing T-steel to serve as mounting beams of the floating disc; the design of the main beam and the auxiliary beam is omitted, and a unified type mounting beam is used; the mounting beam staggered splicing mode is adopted, so that the integral strength of the floating disc is improved; the mode of welding the bolt connection accessories on the floating box and the mounting beam replaces the original punching connection mode on the floating box and the mounting frame, so that the sealing safety of the floating box is improved; the bolt mounting accessory is manufactured by adopting the laser perforation, so that the accuracy of the bolt position is ensured, the field mounting speed is increased, and the field workload is reduced; the bolt installation mode of the original spliced floating disc is changed from the horizontal installation mode to the 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 accumulation medium exists at the edge of the floating disc, and the overall safety of the floating disc is provided.
Claims (8)
1. The full liquid-receiving welding stainless steel floating disc comprises a floating disc body (1), an oil measuring and guiding column sealing device (2), an automatic ventilation valve (3), an edge ventilation valve (4), an anti-rotation device (5), an electrostatic guiding steel wire rope (6), floating disc supporting legs (115), a manhole, a ladder stand (8) and an edge plate (13), wherein the oil measuring and guiding column sealing device is arranged on the floating disc body (1); the method is characterized in that: the floating disc body (1) comprises a mounting frame (11) and floating boxes (12), wherein the mounting frame (11) is arranged inside the edge plate (13), the mounting frame (11) is a steel structure plane grid frame, the outer outline of the mounting frame (11) is circular, the mounting frame (11) comprises a plurality of unit grid frames, and the plurality of floating boxes (12) arranged side by side are respectively embedded and connected in each unit grid frame; the unit grid 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 mounting beams (111), the mounting beams (111) and the buoyancy tanks (12), the buoyancy tanks (12) and the edge plates (13) are connected with the mounting beams (111) and the buoyancy tanks (12) through bolts at bottom connecting joints and are connected into an integral structure through airtight welding at upper connecting joints;
The T-shaped splicing is characterized in that the top end (1111) of the mounting beam (111) is vertically connected with the middle (1112) of the adjacent mounting beam (111) until the rectangular unit grid frame is enclosed, the top end (1111) of the mounting beam (111) extending out of the unit grid frame is vertically connected with the middle (1112) of the adjacent mounting beam (111), and the T-shaped splicing extends from the middle of the floating disc body (1) to the outer ring and is spliced to the inner ring edge of the edge plate (13) for fixing.
2. The full liquid-contacting welded stainless steel floating disc of claim 1, wherein: the upper surface of the middle of the mounting beam (111) is welded with the upper surface and the lower surface of the top ends of the two ends, the lower surface of the middle of the mounting beam (111) is welded with a supporting leg mounting plate (114) and also has a bolt connecting piece (113) structure, the connecting joints of two adjacent mounting beams (111) are connected and fixed through bolts of the bolt connecting pieces (113) or the supporting leg mounting plate (114) arranged below, and the connecting joints in the upper direction, the left direction and the right direction of the connecting joints of the mounting beams (111) are hermetically welded, so that the mounting beams (111) are integrated; the floating plate support leg (115) is vertically fixed on the bottom surface of the support leg mounting plate (114), and a plurality of rib plates (116) are uniformly distributed around the floating plate support leg (115) and are fixedly connected with the support leg mounting plate (114) in a welding mode.
3. The full liquid-contacting welded stainless steel floating disc of 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 tanks (12), and a plurality of buoyancy tanks (12) are arranged in the unit grid frame.
4. A full liquid weld stainless steel float plate as claimed in claim 3 wherein: the two sides of the lower surface of the mounting beam (111) are provided with buoyancy tank bolt connectors (1113) along the length, the buoyancy tanks (12) are correspondingly provided with buoyancy tank bolt connectors (1113), the periphery of the lower surface of each buoyancy tank (12) is fixedly connected with the adjacent frame connecting joints of the unit grid frame through the buoyancy tank bolt connectors (1113) in a threaded connection mode, and the connecting joints of the two adjacent buoyancy tanks (12) are hermetically welded and sealed on the upper surface through the connecting joints between the buoyancy tanks (12) and the frames of the unit grid frame.
5. The full liquid joint welded stainless steel floating disc according to claim 4, wherein: two adjacent buoyancy tanks (12) or buoyancy tanks (12) and the bottom of adjacent installation roof beam (111) are connected fixedly through connection layering (130), connection layering (130) are including U-shaped strip (131), U-shaped layering (132), two adjacent U-shaped strip (131) up of two parallel notch symmetry welding in concatenation seam both sides of buoyancy tanks (12) bottom, two U-shaped strip (131) bottom sets up U-shaped layering (132), U-shaped layering (132) notch upwards covers and buckles two on U-shaped strip (131), the U-shaped tank bottom of U-shaped strip (131) sets up a plurality of gland nut (133) along length direction, gland nut (133) correspond the through-hole that U-shaped layering (132) bottom plate set up and insert the bolt will U-shaped layering (132) respectively with two U-shaped strip (131) spiro union are fixed together.
6. A full liquid weld stainless steel float plate as claimed in claim 3 wherein: the mounting beam (111) is a stainless steel tube with two closed ends and a square cross section; the unit grid frame is square; the cell frame, buoyancy tank (12) adjacent the edge of the float plate is naturally shaped with the circle.
7. The full liquid-contacting welded stainless steel floating disc of claim 1, wherein: the upper end and the lower end of the edge plate (13) are horizontally bent outwards by a section of bending edge, the inner side surface of the edge plate (13) is tightly abutted against the side surface of the floating box (12) at the edge of the floating plate body (1), the upper surface of the floating box (12) is tightly abutted against 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) and is overlapped and screwed with the lower bending edge of the edge plate (13) after being outwards extended; all the connection gaps between the upper surface of the floating disc body (1) and the edge plate (13) are welded, namely the connection gaps between the upper surfaces of the floating box (12) and the mounting beam (111) at the edge and the edge plate (13) are hermetically welded; the mounting beam (111) is overlapped and screwed 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 adhered to the bottom surface of the horizontal plate (1301) and is in airtight welding connection.
8. A construction method for welding a stainless steel floating disc by full liquid connection is characterized by comprising the following steps: the method comprises the following construction steps of the method,
Step one, determining the central position of a storage tank, determining the central position of the whole storage tank by a laser level meter and a range finder, wherein the position is also the reference position for splicing floating plates, and simultaneously setting the laser level meter at the design height to determine the reference height of the floating plates;
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 mounting frames (11), namely splicing the mounting frames (11) from inside to outside sequentially, wherein the bottoms of the mounting frames (11) are connected through bolts by bolt connectors (113), and the length and width errors of the centers of all grids are ensured to meet the design requirements during splicing;
Welding the mounting frame (11), and welding the upper, left and right directions of the joint of the mounting beam (111) of the mounting frame (11) to integrate the mounting frame (11), wherein the whole floating disc body (1) is divided into a plurality of independent sealed cabin structures through the mounting frame (11); the mounting frame (11) is formed by mutually splicing mounting beams (111) with the same specification and size in a T shape; the T-shaped splicing is characterized in that the top end (1111) of the mounting beam (111) is vertically connected with the middle (1112) of the adjacent mounting beam (111) until a rectangular unit grid frame is enclosed, the top end (1111) of the mounting beam (111) extending out of the unit grid frame is vertically connected with the middle (1112) of the adjacent mounting beam (111), and the T-shaped splicing extends from the middle of the floating disc body (1) to the outer ring and is spliced to the inner ring edge of the edge plate (13) for fixing;
step five, installing the floating boxes (12), respectively installing the floating boxes (12) to designated positions according to the installation sequence numbers, and connecting and fastening the floating boxes on the lower surface of the floating disc body (1) by using a connecting pressing strip (130);
Step six, installing the edge plates (13) to the appointed positions block by block, and fixing the buoyancy tank (12) and the installation frame (11) through bolts;
Welding the upper surface of the floating disc body (1), and completely welding the upper surface of the floating disc body (1) and the connecting gaps of the edge plates (13) after splicing is completed so as to ensure air tightness;
Step eight, after welding, checking all welding seams, and ensuring no false welding and leakage;
Step nine, installing an oil measuring and guiding column sealing device (2), an automatic ventilation valve (3), an edge ventilation valve (4), an anti-rotation device (5), an electrostatic conduction steel wire rope (6), a floating disc supporting leg (115), a manhole and a cat ladder (8) on the floating disc body (1);
and step ten, integrally checking, ending and cleaning the scene.
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| 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 |
| CN113602690B (en) * | 2021-09-07 | 2023-04-28 | 临沂安达机械设备有限公司 | Inner floating roof storage tank sealing assembly |
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