CN114873086A - High-efficient sealed floating disc - Google Patents
High-efficient sealed floating disc Download PDFInfo
- Publication number
- CN114873086A CN114873086A CN202210376085.8A CN202210376085A CN114873086A CN 114873086 A CN114873086 A CN 114873086A CN 202210376085 A CN202210376085 A CN 202210376085A CN 114873086 A CN114873086 A CN 114873086A
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- Prior art keywords
- floating
- sealing
- adjacent
- flotation tank
- plate
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- 238000007667 floating Methods 0.000 title claims abstract description 95
- 238000007789 sealing Methods 0.000 claims abstract description 80
- 238000005188 flotation Methods 0.000 claims abstract description 53
- 238000003860 storage Methods 0.000 claims description 27
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 239000011368 organic material Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 abstract 1
- 239000002390 adhesive tape Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- B65D88/42—Large containers having floating covers, e.g. floating roofs or blankets with sealing means between cover rim and receptacle
-
- 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
-
- 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)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
Abstract
The invention relates to the technical field of floating plates for oil tanks, and particularly discloses a high-efficiency sealing floating plate which comprises a plurality of floating box units and a connecting assembly, wherein each floating box unit comprises a floating box with an opening at the top and a cover plate for sealing the opening at the top of the floating box, the cover plate is embedded in the opening at the top of the floating box, the top edge of the floating box is provided with a connecting part, adjacent connecting parts of two adjacent floating boxes are fixedly connected through the connecting assembly, and a plurality of partition plates for dividing the floating box into a plurality of compartments are arranged in the floating box. This floating plate comprises a plurality of flotation tank units, and the arrangement of compartment structure can avoid the flotation tank unit to take place to leak whole flotation tank unit buoyancy after becoming invalid, greatly reduced the sinking plate accident probability that the whole buoyancy of floating plate became invalid, improve the floating plate wholeness can, reduced the influence that the flotation tank unit leaked and caused, first seal structure can effectively reduce with the setting of second seal structure and leak the risk, greatly reduced VOC discharges.
Description
Technical Field
The invention relates to the technical field of floating plates for oil tanks, in particular to a high-efficiency sealing floating plate.
Background
Most of the storage tank floating plates built in the early years in an operating oil depot are made of aluminum floating cylinders, and basically do not meet the requirements of the existing national relevant standards on full liquid receiving of the floating plates; meanwhile, the safety supervision department also puts forward the requirements on the intrinsic safety of the storage tank; the existing floating plate of the storage tank needs to be replaced by a full-liquid-receiving type efficient sealing floating plate, and a field assembly box type floating plate is mostly adopted, and the whole floating plate is formed by assembling a plurality of small floating boxes; the structural form of the buoyancy tank is mostly honeycomb type, the buoyancy tank body adopts welding, the honeycomb core and the tank body are mostly bonded, the rigidity of the tank body is increased after the honeycomb core is arranged inside, but because the tank body and the honeycomb core adopt bonding technology, the technology causes the high temperature resistance performance to be poor, and when the storage tank is in fire, the internal honeycomb structure loses the supporting force; meanwhile, oil and oil gas after leakage are difficult to clean after entering the honeycomb, so that the safety risk during maintenance of the storage tank and the floating plate is increased, and the disposal cost of the abandoned floating box is high.
Disclosure of Invention
The invention provides a high-efficiency sealed floating disc, aiming at solving the problems that the existing honeycomb floating disc has poor high-temperature resistance, oil and oil gas are difficult to clean after entering a honeycomb after leakage, the safety risk is high when a storage tank and the floating disc are overhauled, and the disposal cost of a waste floating box is high.
The technical scheme adopted by the invention is as follows:
the utility model provides a high-efficient sealed floating deck, includes a plurality of flotation tank units and coupling assembling, the flotation tank unit includes open-top's flotation tank and is used for sealed flotation tank open-top's apron, the apron inlays the dress in flotation tank open-top, the top edge of flotation tank is equipped with connecting portion, through coupling assembling fixed connection between the adjacent connecting portion of two adjacent flotation tanks, be equipped with a plurality of baffles that divide into a plurality of compartments with the flotation tank in the flotation tank.
Preferably, the upper surface of apron is equipped with additional strengthening, additional strengthening is the groined type beam structure, the groined type beam structure respectively with correspond the upper surface of apron and correspond the connecting portion inside wall welding at the top edge of flotation tank.
Preferably, coupling assembling is including pressing from both sides tight fastener, it is the clamping piece that the cross-section is "U" font to press from both sides tight fastener, the opening width of clamping piece is less than the thickness sum of the two adjacent connecting portion of two adjacent flotation tanks, and the opening of clamping piece is located to the adjacent connecting portion of two adjacent flotation tanks.
Preferably, the connecting assembly further comprises a first sealing element and a second sealing element, the first sealing element is arranged between the adjacent outer side walls of the two adjacent buoyancy tanks, and the second sealing element is arranged between the connecting part and the clamping piece of the buoyancy tank.
Preferably, coupling assembling still includes the retaining member that is used for fastening clamping piece and flotation tank, the retaining member includes bolt and nut, the bolt runs through behind the connecting portion of clamping piece and flotation tank and is connected with the nut.
Preferably, the bottom edge of the buoyancy tank is also provided with a connecting part and a corresponding connecting component.
Preferably, the floating plate further comprises a first sealing structure, a second sealing structure and a third sealing structure, the first sealing structure is arranged in a gap between the tops of the two adjacent floating boxes, the second sealing structure is arranged in a gap between the bottoms of the two adjacent floating boxes, and the third sealing structure is arranged in a gap between the inner wall of the storage tank and the outer side wall of the floating box adjacent to the storage tank.
Preferably, the first sealing structure is a metal sealing member or an organic material sealing member, and the second sealing structure is an organic material sealing member.
Preferably, the third seal structure includes backup pad, seal membrane and sealing layering, the backup pad is located on the flotation tank adjacent with the storage tank lateral wall department adjacent with the storage tank, the top edge of backup pad is the arcuation and forms sealed top board, the seal membrane is located on sealed top board and is located the inner wall of storage tank and in the clearance between the flotation tank lateral wall adjacent with the storage tank through sealing layering.
The invention has the beneficial effects that: this floating plate comprises a plurality of flotation tank units, and the compartment structure setting can avoid the flotation tank unit to take place to leak whole flotation tank unit buoyancy after becoming invalid, greatly reduced the sinking plate accident probability that the whole buoyancy of floating plate became invalid, improve the floating plate wholeness ability, reduced the influence that the flotation tank unit leaked and caused, first seal structure can effectively reduce the leakage risk with the setting of second seal structure, greatly reduced VOC discharges.
Drawings
FIG. 1 is a schematic top view of a floating plate according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the connection between the buoyancy tanks according to the embodiment of the present invention;
FIG. 3 is a schematic perspective view of the interior of the buoyancy tank according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a buoyancy tank and a reinforcing structure according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of the connection between the buoyancy tanks according to the embodiment of the present invention;
FIG. 6 is a schematic perspective view of a buoyancy tank and a connection assembly according to an embodiment of the present disclosure;
FIG. 7 is a schematic view of the top sealing structure between the buoyancy tanks according to the embodiment of the present invention;
FIG. 8 is a schematic view of a sealed space structure at the bottom between the buoyancy tanks according to an embodiment of the present invention;
FIG. 9 is a schematic perspective view of the seal between the buoyancy tank and the storage tank according to the embodiment of the present invention;
FIG. 10 is a schematic perspective view of a floating plate and a supporting member according to an embodiment of the present invention;
reference numerals:
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1-3, a high-efficient sealed floating deck includes a plurality of flotation tank units and coupling assembling, the flotation tank unit includes open-top's flotation tank and is used for sealed flotation tank open-top's apron, the apron inlays the dress in the flotation tank open-top, the top edge of flotation tank is equipped with connecting portion, passes through coupling assembling fixed connection between the adjacent connecting portion of two adjacent flotation tanks, be equipped with a plurality of baffles that divide into a plurality of compartments with the flotation tank in the flotation tank.
The adjacent floating boxes are fixedly connected through the connecting assembly, the plurality of floating boxes are transversely connected to form a row of floating boxes, the plurality of rows of floating boxes are longitudinally connected to form a floating plate, and the side wall, facing the storage tank, of the peripheral floating plate is in an arc shape and is matched with the storage tank. Through set up the baffle in the flotation tank and form the compartment, can increase the intensity of flotation tank, also enable the holistic pliability of floating plate better, and it is totally enclosed between the compartment, when one of them compartment takes place to leak, can not influence other floating warehouses, whole floating plate only receives the influence that the compartment was leaked to the limited individual, the whole buoyancy that receives of floating plate can not descend by a wide margin, greatly reduced the whole buoyancy of floating plate and become invalid the probability that takes place the sinking plate accident, the floating plate wholeness can be improved, the influence that the flotation tank leaked the production has been reduced.
In one embodiment, as shown in fig. 4, the upper surface of the cover plate is provided with a reinforcing structure, and the reinforcing structure is a cross beam structure which is welded with the upper surface of the corresponding cover plate and the inner side wall of the connecting part of the top edge of the corresponding buoyancy tank.
After the cross beam is arranged on the cover plate, the deformation resistance of the cover plate can be greatly improved, and the risk that the buoyancy tank is pulled to be cracked by external force is reduced.
In one embodiment, as shown in fig. 5 and 6, the connection assembly includes a clamping fastener, the clamping fastener is a clip with a U-shaped cross section, the width of the opening of the clip is smaller than the sum of the thicknesses of two adjacent connecting portions of two adjacent buoyancy tanks, and the adjacent connecting portions of two adjacent buoyancy tanks are disposed in the opening of the clip.
The two adjacent connecting parts of the two adjacent floating boxes are clamped and fixed together through the clamping piece, so that the plurality of floating boxes are connected into the floating plate, the opening width of the clamping piece is smaller than the sum of the thicknesses of the two adjacent connecting parts of the two adjacent floating boxes, and the clamping piece can fix the adjacent floating boxes together without a sealing piece.
In one embodiment, as shown in fig. 5 and 6, the connection assembly further includes a first seal disposed between adjacent outer sidewalls of two adjacent pontoons and a second seal disposed between the connection portion of the pontoons and the clip.
When flotation tank equipment floating plate, can use first sealing member earlier to bond adjacent flotation tank lateral wall together, then it is fixed to recycle the clamping piece, and first sealing member can select for bonding adhesive tape, and this bonding adhesive tape can be single face and glues, and when the bonding flotation tank, the unit face has easy and simple to handle's advantage.
The effect of second sealing member makes the clamping piece more firm to fixing between the flotation tank, and the second sealing member also can select for bonding adhesive tape, still can select for the elastic component, and wherein, bonding adhesive tape is used for making clamping piece and flotation tank together fixed through the adhesive force, and the elastic component is used for making clamping piece and flotation tank together fixed through the extrusion force. If the elastic piece is used, the clamping piece and the elastic piece are in interference fit, and the elastic piece and the floating box are also in interference fit. If the adhesive rubber strip is used, double-sided adhesive can be selected, so that the connection between the clamping piece and the floating box is firmer.
In one embodiment, the connecting assembly further comprises a locking member for fastening the clamping piece and the buoyancy tank, wherein the locking member comprises a bolt and a nut, and the bolt penetrates through the connecting part of the clamping piece and the buoyancy tank and then is connected with the nut.
The hexagonal bolt can be selected to the bolt, and the corresponding selection of nut is hexagon nut, adopts the retaining member simple to operate of above-mentioned structure, stable in structure, reducible coupling assembling internal friction, increase of service life.
In one embodiment, as shown in fig. 5, the bottom edge of the buoyancy tank is also provided with a connection portion and a corresponding connection assembly.
The top and the bottom of flotation tank all use coupling assembling to connect, make structural strength further strengthen.
In one embodiment, as shown in fig. 7-9, the floating plate further comprises a first sealing structure, a second sealing structure and a third sealing structure, wherein the first sealing structure is arranged in the gap between the tops of two adjacent floating boxes, the second sealing structure is arranged in the gap between the bottoms of two adjacent floating boxes, and the third sealing structure is arranged in the gap between the inner wall of the storage tank and the outer side wall of the floating box adjacent to the storage tank.
Adopt double seal structure, the clearance between the upper portion of adjacent flotation tank sets up first seal structure, and the clearance between the lower part sets up second seal structure, and second seal structure can immerse in the oil when the floating plate normal use, and double seal structure can effectively reduce and leak the risk, and greatly reduced VOC discharges. Because in the second seal structure brand oil, when catching fire above the floating plate, the heat conducts downwards through the buoyancy tank, and the oil can play a good role in absorbing heat, thereby greatly reducing the temperature at the second seal structure.
In one embodiment, the first sealing structure is a metal seal or an organic material seal, and the second sealing structure is an organic material seal.
When the first sealing structure is a metal sealing element, a material which can bear high temperature of more than 1000 ℃ and has good deformability and medium applicability is selected. When the first sealing structure and the second sealing structure are both made of organic material sealing elements, polytetrafluoroethylene flexible sealing strips can be selected, and the polytetrafluoroethylene flexible sealing strips have good temperature resistance and medium applicability.
In one embodiment, as shown in fig. 9, the third sealing structure comprises a supporting plate, a sealing film and a sealing bead, the supporting plate is arranged on the outer side wall of the buoyancy tank adjacent to the storage tank, the top edge of the supporting plate is arc-shaped and forms a sealing upper pressure plate, and the sealing film is arranged on the sealing upper pressure plate through the sealing bead and is positioned in a gap between the inner wall of the storage tank and the outer side wall of the buoyancy tank adjacent to the storage tank.
The backup pad is used for fixed floating plate and storage tank lateral wall contact, and the seal membrane is used for the sealed clearance between top board and the storage tank lateral wall that seals, and the sealing layering is used for making the seal membrane fastening on sealed top board.
In one embodiment, as shown in fig. 10, the bottom of the floating plate is further provided with a plurality of supporting assemblies for supporting the floating plate. The supporting component comprises a mounting plate, a supporting upright rod and a plurality of fixing plates, the mounting plate can be fixed to the bottom of the floating plate through bolts, the top end of the supporting upright rod is fixedly connected with the mounting plate through welding or an integrated forming mode, the fixing plates are arranged between the mounting plate and the supporting upright rod in a circumferential array mode by taking the supporting upright rod as a center, the connecting strength of the mounting plate and the supporting upright rod is imposed, and the fixing plates can be fixedly welded with the mounting plate or integrally formed with the mounting plate and the supporting upright rod.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. The utility model provides a high-efficient sealed floating deck, its characterized in that, includes a plurality of flotation tank units and coupling assembling, the flotation tank unit includes open-top's flotation tank and is used for sealed flotation tank open-top's apron, the apron inlays the dress in flotation tank open-top, the top edge of flotation tank is equipped with connecting portion, through coupling assembling fixed connection between the adjacent connecting portion of two adjacent flotation tanks, be equipped with a plurality of baffles that divide into a plurality of compartments with the flotation tank in the flotation tank.
2. The efficient sealing floating plate according to claim 1, wherein the upper surface of the cover plate is provided with a reinforcing structure, the reinforcing structure is a cross beam structure, and the cross beam structure is welded with the upper surface of the corresponding cover plate and the inner side wall of the connecting part of the top edge of the corresponding floating box respectively.
3. The efficient sealing floating disc according to claim 1, wherein the connecting assembly comprises a clamping fastener, the clamping fastener is a clamping piece with a U-shaped cross section, the width of the opening of the clamping piece is smaller than the sum of the thicknesses of two adjacent connecting parts of two adjacent floating boxes, and the adjacent connecting parts of two adjacent floating boxes are arranged in the opening of the clamping piece.
4. The efficient sealing floating plate according to claim 3, wherein the connecting assembly further comprises a first sealing member and a second sealing member, the first sealing member is arranged between adjacent outer side walls of two adjacent floating boxes, and the second sealing member is arranged between the connecting part and the clamping piece of the floating box.
5. The efficient sealing floating plate according to claim 4, wherein the connecting assembly further comprises a locking member for fastening the clip and the floating box, the locking member comprises a bolt and a nut, and the bolt penetrates through the connecting part of the clip and the floating box and then is connected with the nut.
6. The efficient sealing floating plate according to any one of claims 1 to 5, wherein the bottom edge of the floating box is also provided with a connecting part and a corresponding connecting component.
7. The efficient sealing floating plate according to claim 6, further comprising a first sealing structure, a second sealing structure and a third sealing structure, wherein the first sealing structure is arranged in a gap between the tops of two adjacent floating boxes, the second sealing structure is arranged in a gap between the bottoms of two adjacent floating boxes, and the third sealing structure is arranged in a gap between the inner wall of the storage tank and the outer side wall of the floating box adjacent to the storage tank.
8. The efficient sealing floating plate according to claim 7, wherein the first sealing structure is a metal sealing member or an organic material sealing member, and the second sealing structure is an organic material sealing member.
9. The efficient sealing floating plate according to claim 8, wherein the third sealing structure comprises a supporting plate, a sealing film and a sealing bead, the supporting plate is arranged on the outer side wall of the floating box adjacent to the storage tank, the top edge of the supporting plate is arc-shaped and forms a sealing upper pressing plate, and the sealing film is arranged on the sealing upper pressing plate and is positioned in a gap between the inner wall of the storage tank and the outer side wall of the floating box adjacent to the storage tank through the sealing bead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210376085.8A CN114873086A (en) | 2022-04-11 | 2022-04-11 | High-efficient sealed floating disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210376085.8A CN114873086A (en) | 2022-04-11 | 2022-04-11 | High-efficient sealed floating disc |
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| Publication Number | Publication Date |
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| CN114873086A true CN114873086A (en) | 2022-08-09 |
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| CN202210376085.8A Pending CN114873086A (en) | 2022-04-11 | 2022-04-11 | High-efficient sealed floating disc |
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| CN211495362U (en) * | 2019-11-07 | 2020-09-15 | 中国石油化工股份有限公司 | Connecting structure of buoyancy tank unit, inner floating plate and oil tank |
| CN211593685U (en) * | 2020-01-14 | 2020-09-29 | 北京嘉乐汇环保科技有限公司 | Full-liquid-receiving floating disc sealing system |
| CN211663882U (en) * | 2020-05-13 | 2020-10-13 | 西安长鹰工程技术有限公司 | Full liquid surface contact welding compound floating disc |
| CN113734632A (en) * | 2020-05-28 | 2021-12-03 | 中国石油化工股份有限公司 | Full liquid receiving type inner floating disc |
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2022
- 2022-04-11 CN CN202210376085.8A patent/CN114873086A/en active Pending
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| CN203345336U (en) * | 2013-07-26 | 2013-12-18 | 天津市津原顺商贸有限公司 | Stacking logistic turnover box |
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| CN109878916A (en) * | 2019-04-22 | 2019-06-14 | 杨少东 | Liquid honeycomb structure floating plate is connect entirely |
| CN211109055U (en) * | 2019-11-07 | 2020-07-28 | 中国石油化工股份有限公司 | Buoyancy tank unit, connection structure of buoyancy tank unit and inner floating disc |
| CN211495362U (en) * | 2019-11-07 | 2020-09-15 | 中国石油化工股份有限公司 | Connecting structure of buoyancy tank unit, inner floating plate and oil tank |
| CN211593685U (en) * | 2020-01-14 | 2020-09-29 | 北京嘉乐汇环保科技有限公司 | Full-liquid-receiving floating disc sealing system |
| CN211663882U (en) * | 2020-05-13 | 2020-10-13 | 西安长鹰工程技术有限公司 | Full liquid surface contact welding compound floating disc |
| CN113734632A (en) * | 2020-05-28 | 2021-12-03 | 中国石油化工股份有限公司 | Full liquid receiving type inner floating disc |
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