CN111186643A - Mounting method of all-welded all-aluminum honeycomb type inner floating disc - Google Patents
Mounting method of all-welded all-aluminum honeycomb type inner floating disc Download PDFInfo
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- CN111186643A CN111186643A CN201811349987.2A CN201811349987A CN111186643A CN 111186643 A CN111186643 A CN 111186643A CN 201811349987 A CN201811349987 A CN 201811349987A CN 111186643 A CN111186643 A CN 111186643A
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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
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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
- 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
- B65D88/42—Large containers having floating covers, e.g. floating roofs or blankets with sealing means between cover rim and receptacle
- B65D88/50—Large containers having floating covers, e.g. floating roofs or blankets with sealing means between cover rim and receptacle with resilient foam or stuffed seal
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses an installation method of an all-welded all-aluminum honeycomb type inner floating disc. The all-welded all-aluminum honeycomb type inner floating disc comprises a main beam and a plurality of floating disc modules; the floating disc module comprises an upper cover plate, a lower cover plate and a hexagonal honeycomb core positioned between the upper cover plate and the lower cover plate; the upper cover plate, the lower cover plate and the hexagonal honeycomb core are all made of aluminum alloy materials; the upper cover plate is welded with the top of the hexagonal honeycomb core to form a seal, and the lower cover plate is welded with the bottom of the hexagonal honeycomb core to form a seal; two adjacent floating plate modules are connected through bolts to form sealing. The main beam and the floating disc module are connected through a bolt to form sealing; and the sealing connection between the adjacent floating plate modules and between the floating plate modules and the main beam is realized in sequence. The invention solves the problems of potential safety hazard and oil gas leakage in the prior floating plate technical form by treatment, so that the invention meets the use requirements of any extreme working condition.
Description
Technical Field
The invention belongs to the technical field of light oil atmospheric storage tank safety control and energy conservation and emission reduction, and particularly relates to an installation method of an all-welded all-aluminum honeycomb type inner floating disc.
Background
The technology of the inner floating roof of the light normal pressure storage tank needs to solve the following technical problems:
1. the oil gas concentration inside the storage tank and around the storage tank is reduced, so that potential safety hazards of a tank area are eliminated;
2. through the blocking effect of the floating roof technology, the volatilization and dissipation loss of the oil product is reduced, thereby achieving the economic benefit and the environmental protection benefit.
The technology for the floating roof in the light normal pressure storage tank is updated from an iron floating bin type inner floating plate, a splint type inner floating plate and a floating barrel type inner floating plate. Wherein, the float-type inner floating plate is divided into a single plate and a double plate.
The float-type inner floating plate is the mainstream of the market, but the inner floating plate in any technical form has serious problems, such as weak strength, few buoyancy units, short service life, unsolvable potential safety hazard, poor VOCs treatment effect and the like.
Disclosure of Invention
The invention aims to provide an installation method of an all-welded all-aluminum honeycomb type inner floating disc, which aims to solve various problems of the floating disc technology in a light oil normal-pressure storage tank and inhibit oil volatilization and dissipation from the source to reduce oil loss.
In order to achieve the purpose, the invention adopts the following technical scheme:
an all-welded all-aluminum honeycomb type inner floating disc mounting method comprises the steps that an all-welded all-aluminum honeycomb type inner floating disc comprises a main beam and a plurality of floating disc modules;
the floating disc module comprises an upper cover plate, a lower cover plate and a hexagonal honeycomb core positioned between the upper cover plate and the lower cover plate; wherein:
the upper cover plate, the lower cover plate and the hexagonal honeycomb core are all made of aluminum alloy materials;
the upper cover plate is welded with the top of the hexagonal honeycomb core to form a seal, and the lower cover plate is welded with the bottom of the hexagonal honeycomb core to form a seal;
the installation step is to realize the sealing connection between the adjacent floating plate modules and between the floating plate modules and the main beam in sequence.
Preferably, the two adjacent floating disc modules are connected through bolts to form a seal.
Preferably, the main beam is shaped like a Chinese character ji;
the main beam and the floating plate module are connected through a bolt to form sealing.
Preferably, a connecting edge part of one side of the floating plate module protrudes upwards from the surface of the upper cover plate;
the protruding part of the edge part is provided with a bolt hole;
the upper part of the main beam is level with the protruding part of the edge part;
the upper part of the main beam is provided with a bolt hole;
the upper part of the main beam and the protruding parts of the side parts are provided with groove-shaped pressing strips together;
a bolt hole is arranged on the groove-shaped pressing bar;
the upper part of the main beam, the protruding parts of the side parts and the groove-shaped pressing strips are fastened through bolts penetrating through the bolt holes.
Preferably, the structural strength of the all-welded all-aluminum honeycomb type inner floating disc is 25KN/0.1m2The above.
Preferably, in the all-welded all-aluminum honeycomb type inner floating plate, more than 1000 uniformly distributed, independent and discontinuous honeycomb holes are present per square meter, and each honeycomb hole is a buoyancy unit.
Preferably, the design buoyancy of the all-welded all-aluminum honeycomb type inner floating plate is not less than four times of the self weight and the sum of the friction force generated when the floating plate rises, the immersion depth of the floating plate is not less than 10mm, and the overall thickness of the floating plate is 90 mm.
Preferably, a sealing device is arranged at the edge of the all-welded all-aluminum honeycomb type inner floating plate.
Preferably, the strength of the float module is seven times the strength required by the API650 specification.
The invention has the following advantages:
the mounting method of the all-welded all-aluminum honeycomb type inner floating disc solves the potential safety hazard problem and the oil gas leakage problem existing in the existing floating disc technology mode, so that the inner floating disc can meet the use requirements of any extreme working condition, and in addition, the effects of inhibiting oil volatilization and dissipation and reducing emission of VOCs (volatile organic compounds) from the source can be achieved through the inner floating disc technology.
Drawings
FIG. 1 is a schematic diagram of an internal structure of a floating plate module of an all-welded all-aluminum honeycomb type internal floating plate according to an embodiment of the present invention;
FIG. 2 is a diagram of the connection structure of the floating plate module and the main beam according to the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a floating plate edge sealing device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
example 1
As shown in fig. 1, the floating plate module includes an upper cover plate 1, a hexagonal honeycomb core 2, and a lower cover plate 3.
Wherein, the hexagonal honeycomb core 2 is positioned between the upper cover plate 1 and the lower cover plate 3.
The hexagonal honeycomb core 2 is provided with a plurality of independent and discontinuous honeycomb holes which are uniformly distributed.
Each honeycomb hole is a buoyancy unit.
The upper cover plate 1, the lower cover plate 3 and the hexagonal honeycomb core 2 in this embodiment 1 are made of an aluminum alloy material.
The upper cover plate 1 and the top of the hexagonal honeycomb core 2 are welded to form sealing, and welding spots 4 are formed after welding.
The lower cover plate 3 and the bottom of the hexagonal honeycomb core 2 are welded to form sealing, and welding spots 4 are formed after welding.
The floating plate module in embodiment 1 of the invention is suitable for a full liquid-receiving honeycomb floating plate. Through the above-mentioned floating plate module of rational design to guarantee the leakproofness of floating plate module, with stopping oil gas and dispersing.
Example 2
This example 2 describes an all-welded all-aluminum honeycomb inner floating plate.
The all-welded all-aluminum honeycomb type inner floating plate comprises a main beam and a plurality of floating plate modules. The floating plate module in embodiment 2 is the floating plate module in embodiment 1.
And adjacent floating disc modules are connected through bolts to form sealing.
The girder is "nearly" style of calligraphy, forms sealedly through bolted connection between girder and the floating plate module.
In the embodiment 2 of the invention, the leakage points in the floating disc modules, between the floating disc modules and at the joints of the floating disc modules and the main beam and other components are improved in a targeted manner, so that the discharge amount of VOCs is reduced to the maximum extent, and the purposes of energy conservation and environmental protection are achieved.
The following description is made of a connection structure of the floating plate module and the main beam:
as shown in fig. 2, a connecting edge of one side of the floating plate module 2-1 protrudes upward from the surface of the upper cover plate.
Bolt holes (not shown) are provided in the projecting portions of the side portions.
The upper part of the main beam 2-5 is level with the protruding part of the edge part, and a bolt hole (not shown) is arranged at the upper part of the main beam 2-5.
The upper part of the main beam 2-5 and the protruding part of the edge part are provided with a groove-shaped pressing strip 2-2 together.
Bolt holes (not shown) are provided on the groove-shaped beads 2-2.
The upper parts of the main beams 2-5, the protruding parts of the side parts and the groove-shaped pressing strips 2-2 are fastened through bolts 2-4 penetrating through bolt holes, specifically, the bolts 2-4 sequentially penetrate through the bolt holes, and then nuts 2-3 are screwed on the bolts 2-4.
Through the connection mode, the sealing performance of the gap between the floating plate modules can be ensured, and oil gas is prevented from dissipating.
The structural strength of the all-welded all-aluminum honeycomb type inner floating disc in the embodiment 2 is 25KN/0.1m2The above.
In addition, in the all-welded all-aluminum honeycomb type inner floating plate, more than 1000 uniformly distributed, independent and discontinuous honeycomb holes exist in each square meter, and each honeycomb hole is a buoyancy unit.
In the embodiment 2, all the accessory facilities of the floating plate can meet the following requirements:
1. the structural strength of the novel floating plate is more than 7 times of that of the API 650; 2. the buoyancy is more than 2 times of the sum of the self gravity and the friction; 3. the number of the floating units of the floating disc is infinite; 4. the service life is more than 30 years; 5. the volatilization and dissipation of the oil product are inhibited from the source; 6. the potential safety hazard that the oil gas concentration inside and around the storage tank is too high is effectively solved; 7. the treatment effect of VOCs can be achieved.
The design of the novel all-welded all-aluminum honeycomb type inner floating disc technology conforms to the requirements of 'design specification of vertical cylindrical steel-made welded oil tank', (GB50341-2014) and 'construction and acceptance specification of vertical cylindrical steel-made welded storage tank', (GB50128-2014), and conforms to the relevant regulations of API Std 650 12 th edition.
All parts of the novel all-welded all-aluminum honeycomb type inner floating disc are made of aluminum-manganese alloy, and the chemical composition of the parts meets the requirements of GB/T3190-2008 'chemical composition of wrought aluminum and aluminum alloy'.
The novel all-welded all-aluminum honeycomb type inner floating disc ensures normal operation.
The sealing mode adopts twice sealing, the inner floating disc accessory and the tank body accessory are not interfered, and the inner floating disc is not leaked when being contacted with the liquid level.
The designed buoyancy of the inner floating plate is not less than four times of the self-weight and the sum of the friction force generated when the floating plate rises, and the immersion depth of the floating plate is not less than 10 mm. The whole thickness of the floating plate is 90 mm.
The structural strength of the floating disc module reaches more than 7 times of the API650 requirement, the edge of the inner floating disc and the part penetrating through the holes of the planking are provided with sealing devices, so that the inner floating disc has a sealing function, and all accessories adopt liquid receiving sealing equipment to block oil gas from the source.
The whole floating disc is made of an aluminum alloy A3003H16, and the standard size of a single floating disc is 33400mmx550mmx90 mm; the honeycomb core is made of aluminum-manganese alloy, the honeycomb core is made of aluminum alloy, the average per square meter of the inner floating disc is not less than 1000 independent honeycomb holes serving as buoyancy units, the material is 3003H24, the side length is not more than 12mm, and the height requirement of the thickness not less than 0.05mm is more than 85 +/-5 mm; the strength of the floating plate module reaches 7 times of the API650 requirement (the API650 specification requires 500Ibf/ft2 to be strong).
The buoyancy provided by the module is more than 2 times of the self gravity.
The size of the edge non-standard module is determined according to a design drawing, the length size range is 500-3400 mm, and a seal is additionally arranged when the pipe fittings, the supporting legs, the guiding devices and the like pass through the inner floating disc; the height of the inner floating plate supporting leg is 1800 mm.
When the inner floating disc is in a supporting state, the vent valve can be automatically opened, when the inner floating disc is in a floating state, the vent valve can be automatically closed, the materials selected for the floating disc, accessories of the floating disc and the adhesive tape are adaptive to an internal liquid storage, and the sealing material meets the requirements of temperature resistance, wear resistance, corrosion resistance, flame retardance, permeation resistance, ageing resistance, good oil resistance and no pollution to media.
The sealing material is selected according to the properties of the storage medium and the storage temperature. The performance of the rubber wrapping tape is not lower than the requirement of rubber sealing tape of a floating roof oil tank soft sealing device HG/T2809-2009. The sealing system adopts secondary sealing: the tongue-shaped scraper blade and the bag type seal are made of XPE; the bladder seal is to have an anti-roll over function.
The connection part of the support and the floating plate is flexible and free in the lifting process of the floating plate. The rubber belt is an entire adhesive tape and cannot be spliced in the length direction and the width direction. All connections are made by hot-melt technology.
The inner float of this example 2 is compared in performance with the float-float in table 1 below:
TABLE 1
Example 3
This example 3 describes a method for mounting an all-welded all-aluminum honeycomb internal floating plate.
The mounting method aims at the all-welded all-aluminum honeycomb type inner floating disc in the embodiment 2 and comprises the following steps:
and the sealing connection between the adjacent floating plate modules 2-1 and between the floating plate module 2-1 and the main beam 2-5 is sequentially realized.
This embodiment 3 is through above-mentioned mounting means, and the installation that has fine realization all-welded aluminium matter honeycomb type inner floating plate can be guaranteed simultaneously that there is the leakproofness in the gap between the floating plate module to block oil gas and dissipate.
Example 4
This embodiment 4 describes a floating plate edge sealing device for realizing the edge sealing of the inner floating plate.
As shown in figure 3, the floating plate edge sealing device comprises a storage tank wall 1-1, a tongue-shaped scraper 2-2, a coating material 1-3, an immersion liquid bag 1-4, a honeycomb floating plate 1-5, a floating plate edge plate 1-6, an immersion liquid nozzle 1-7, a pressure detection pipeline 1-8 and a fastener 1-9.
Wherein, the honeycomb floating plates 1-5 adopt the all-welded all-aluminum honeycomb inner floating plate in the embodiment 2.
The end face of the honeycomb floating plate 1-5 is fixed with a floating plate edge plate 1-6.
The tongue-shaped scraper 1-2 and the coating material 1-3 are fixed on the floating plate edge plate 1-6 through a fastener 1-9, the immersion liquid bag 1-4 is arranged in the coating material 1-3, and the immersion liquid nozzle 1-7 and the pressure detection pipeline 1-8 extend out of the floating plate edge plate 1-6.
The immersion nozzle 1-7 is connected with the main pipe network, liquid gas is filled into the immersion bag 1-4, and the tongue-shaped scraper blade 1-2 and the coating material 1-3 are tightly attached to the tank wall 1-1 of the storage tank under the expansion action of the high-pressure immersion bag 1-4.
If the pressure reduction phenomenon occurs, the pressure signal in the pressure detection pipeline 1-8 is transmitted into the sealing effect monitoring facility, the facility automatically operates the electric actuating mechanism to complete the pressure compensation operation, and the pressure of the infusion bag 1-4 is ensured to be maintained within the set range.
The coating material 1-3 and the tongue-shaped scraper blade 1-2 are made of wear-resistant and corrosion-resistant materials, and can meet the requirement of normal work under the condition of oil product infiltration. The infusion bag 1-4 is sealed, so that the diameter deviation of the storage tank can be compensated to the maximum extent, and the storage tank is ensured to be maintained in a sealed state all the time in the operation process; and the liquidity of the liquid has the function of dispersing and concentrating stress, the service life is longer, the operation failure rate is low, 6 immersion liquid bags are arranged in total 1-4, the radial connection completely surrounds the outer edge of the floating plate, and the immersion liquid bags are fixed by coating materials 1-3.
The floating plate edge sealing device described in this embodiment 4 can realize sealing at the edge of the floating plate, and the main pipe network is filled with liquid to release the pressure of the immersion liquid bag 1-4 outwards, so that the gap between the honeycomb floating plate 1-5 and the tank wall 1-1 of the storage tank is completely sealed, oil and gas are prevented from escaping, and the pressure detection hose can monitor the pressure data of the air bag in real time to ensure the normal operation of the sealing device.
It should be understood, however, that the description herein of specific embodiments is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. An installation method of an all-welded all-aluminum honeycomb type inner floating plate is characterized in that,
the all-welded all-aluminum honeycomb type inner floating disc comprises a main beam and a plurality of floating disc modules;
the floating disc module comprises an upper cover plate, a lower cover plate and a hexagonal honeycomb core positioned between the upper cover plate and the lower cover plate; wherein:
the upper cover plate, the lower cover plate and the hexagonal honeycomb core are all made of aluminum alloy materials;
the upper cover plate is welded with the top of the hexagonal honeycomb core to form a seal, and the lower cover plate is welded with the bottom of the hexagonal honeycomb core to form a seal;
the installation step is to realize the sealing connection between the adjacent floating plate modules and between the floating plate modules and the main beam in sequence.
2. The method for installing an all-welded all-aluminum honeycomb type inner floating floor according to claim 1,
two adjacent floating plate modules are connected through bolts to form sealing.
3. The method for installing an all-welded all-aluminum honeycomb type inner floating floor according to claim 1,
the main beam is shaped like a Chinese character ji;
the main beam and the floating plate module are connected through a bolt to form sealing.
4. The method for installing an all-welded all-aluminum honeycomb type inner floating floor according to claim 3,
one side connecting edge part of the floating disc module protrudes upwards out of the surface of the upper cover plate;
the protruding part of the edge part is provided with a bolt hole;
the upper part of the main beam is level with the protruding part of the edge part;
the upper part of the main beam is provided with a bolt hole;
the upper part of the main beam and the protruding parts of the side parts are provided with groove-shaped pressing strips together;
a bolt hole is arranged on the groove-shaped pressing bar;
the upper part of the main beam, the protruding parts of the side parts and the groove-shaped pressing strips are fastened through bolts penetrating through the bolt holes.
5. The method for installing an all-welded all-aluminum honeycomb type inner floating floor according to claim 1,
the structural strength of the all-welded all-aluminum honeycomb type inner floating disc is 25KN/0.1m2The above.
6. The method for installing an all-welded all-aluminum honeycomb type inner floating floor according to claim 1,
in the all-welded all-aluminum honeycomb type inner floating disc, more than 1000 uniformly distributed, independent and discontinuous honeycomb holes exist in each square meter, and each honeycomb hole is a buoyancy unit.
7. The method for installing an all-welded all-aluminum honeycomb type inner floating floor according to claim 1,
the design buoyancy of the all-welded all-aluminum honeycomb type inner floating disc is not less than four times of the self weight and the sum of the friction force generated when the floating disc rises, the immersion depth of the floating disc is not less than 10mm, and the overall thickness of the floating disc is 90 mm.
8. The method for installing an all-welded all-aluminum honeycomb type inner floating floor according to claim 1,
and a sealing device is arranged at the edge of the all-welded all-aluminum honeycomb type inner floating disc.
9. The method for installing an all-welded all-aluminum honeycomb type inner floating floor according to claim 1,
the strength of the float module is seven times that required by the API650 specification.
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| CN201811349987.2A CN111186643A (en) | 2018-11-14 | 2018-11-14 | Mounting method of all-welded all-aluminum honeycomb type inner floating disc |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115848835A (en) * | 2022-11-28 | 2023-03-28 | 河北铭锋机械制造有限公司 | Composite full-liquid-receiving floating plate and preparation method thereof |
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Application publication date: 20200522 |