CN111186644A - Installation method of stainless steel explosion-proof fireproof all-welded honeycomb core floating disc - Google Patents
Installation method of stainless steel explosion-proof fireproof all-welded honeycomb core floating disc Download PDFInfo
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- CN111186644A CN111186644A CN201811350084.6A CN201811350084A CN111186644A CN 111186644 A CN111186644 A CN 111186644A CN 201811350084 A CN201811350084 A CN 201811350084A CN 111186644 A CN111186644 A CN 111186644A
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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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Abstract
The invention discloses a method for installing a floating disc in a stainless steel explosion-proof fireproof all-welded honeycomb core. The 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 honeycomb core positioned between the upper cover plate and the lower cover plate; wherein: the upper cover plate and the lower cover plate are made of stainless steel materials, and the honeycomb core is made of aluminum alloy materials; the upper cover plate and the top of the honeycomb core are welded to form sealing, and the lower cover plate and the bottom of the honeycomb core are welded to form sealing. Two adjacent floating plate modules are connected through welding to form sealing. The main beam is shaped like a Chinese character ji; the main beam and the floating plate module are connected through welding 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 is beneficial to solving the potential safety hazard problem existing in the prior floating plate technical form and the problem of oil gas leakage.
Description
Technical Field
The invention belongs to the technical field of safety control, energy conservation and emission reduction of a light oil normal-pressure storage tank, and particularly relates to a method for installing a stainless steel explosion-proof and fireproof all-welded honeycomb core floating disc.
Background
The problem to be solved by the floating roof in the light normal-pressure storage tank is that the concentration of oil gas in the storage tank and around the storage tank is reduced to enable the concentration to be at the lower limit of deflagration, so that the potential safety hazard of a tank area is eliminated, and the environmental protection benefit is achieved.
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.
Float-type inner floating plates currently occupy the mainstream of the market, but the inner floating plates in any technical form have serious problems, such as poor structural strength, short service life, fire prevention and explosion prevention in a tank body, poor VOCs treatment effect and the like.
Disclosure of Invention
The invention aims to provide a method for mounting a floating disc in a stainless steel explosion-proof fireproof all-welded honeycomb core, which aims to solve various problems in 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:
a method for installing a floating plate in a stainless steel explosion-proof and fireproof all-welded honeycomb core comprises the steps that the floating plate in the stainless steel explosion-proof and fireproof all-welded honeycomb core comprises a main beam and a plurality of floating plate modules;
the floating disc module comprises an upper cover plate, a lower cover plate and a honeycomb core positioned between the upper cover plate and the lower cover plate; wherein:
the upper cover plate and the lower cover plate are made of stainless steel materials, and the honeycomb core is made of aluminum alloy materials;
the upper cover plate and the top of the honeycomb core are welded to form a seal, and the lower cover plate and the bottom of the honeycomb core are welded 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 plate modules are connected through welding 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 welding to form sealing.
Preferably, the upper cover plate of the floating plate module horizontally protrudes outwards from the side surface of the floating plate module;
the upper part of the main beam is positioned at the upper cover plate of the floating disc module, and the lower part of the main beam is positioned at the lower cover plate of the floating disc module;
the upper part of the main beam is welded with the protruding part of the upper cover plate of the floating plate module;
the lower part of the main beam is connected with the lower cover plate of the floating plate module in a welding way.
Preferably, in the stainless steel explosion-proof fireproof all-welded honeycomb core inner floating plate, more than 1000 uniformly distributed, independent and discontinuous honeycomb holes are formed in each square meter, and each honeycomb hole is a buoyancy unit.
Preferably, the design buoyancy of the floating plate in the stainless steel explosion-proof fireproof all-welded honeycomb core is not less than the sum of three times of the self weight and the friction force generated when the floating plate rises, and the immersion depth of the floating plate is not less than 10 mm.
Preferably, a sealing device is arranged at the edge of the floating disc in the stainless steel explosion-proof fireproof all-welded honeycomb core.
Preferably, the strength of the float module is seven times the strength required by the API650 specification.
Preferably, the thickness of the floating plate in the stainless steel explosion-proof fireproof all-welded honeycomb core is 90 mm.
The invention has the following advantages:
the invention solves the potential safety hazard problem existing in the prior floating plate technical form and treats and solves the oil gas leakage problem, thereby achieving the purposes of fire prevention and explosion prevention in the storage tank, and inhibiting oil volatilization and dissipation and emission reduction of VOCs from the source.
Drawings
FIG. 1 is a schematic structural diagram of a floating plate module of a stainless steel explosion-proof fireproof all-welded honeycomb core floating plate in an embodiment of the invention;
FIG. 2 is a diagram of the connection structure between 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 honeycomb core 2, and a lower cover plate 3.
Wherein, the honeycomb core 2 is positioned between the upper cover plate 1 and the lower cover plate 3.
The honeycomb core 2 is, for example, a hexagonal honeycomb core.
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 and the lower cover plate 3 in this embodiment 1 are both made of stainless steel material, and thus have fire and explosion protection properties.
The honeycomb core 2 of this embodiment 1 is made of an aluminum alloy material, and is light in weight and high in structural strength.
The upper cover plate 1 and the top of the honeycomb core 2 are welded to form a seal, and welding spots 4 are formed.
The lower cover plate 3 and the bottom of the honeycomb core 2 are welded to form a seal, and welding spots 4 are formed.
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, can guarantee the leakproofness of floating plate module to block oil gas and dispel, self weight obviously alleviates simultaneously.
In addition, the honeycomb holes are used as buoyancy units, so that the buoyancy of the floating plate module can be improved.
Example 2
The embodiment 2 of the invention describes a stainless steel explosion-proof and fireproof all-welded honeycomb core floating disc.
The stainless steel explosion-proof fireproof all-welded honeycomb core 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.
Wherein, form sealedly through welded connection between two adjacent floating plate modules.
The main beam is shaped like a Chinese character ji; the main beam and the floating plate module are connected through welding to form sealing.
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 from the source, 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, the upper cover plate of the floating plate module 2-4 protrudes horizontally outward from the side surface of the floating plate module 2-4.
The upper part of the main beam 2-3 is positioned at the upper cover plate of the floating plate module 2-4.
The lower part of the main beam 2-3 is positioned at the lower cover plate of the floating plate module 2-4.
The upper part of the main beam 2-3 is welded with the protruding part of the upper cover plate of the floating plate module 2-4, and a welding spot 2-1 is formed.
The lower part of the main beam 2-3 is welded with the lower cover plate of the floating plate module 2-4 to form a welding spot 2-2.
Through the welding connection mode, the sealing performance of the gaps between the floating plate modules can be ensured, and oil gas is prevented from dissipating.
In the stainless steel explosion-proof fireproof all-welded honeycomb core floating plate in the embodiment 2, more than 1000 uniformly distributed, independent and discontinuous honeycomb holes exist in each square meter, and each honeycomb hole is a buoyancy unit.
Through a plurality of buoyancy units, be favorable to improving the buoyancy of interior floating plate in this embodiment 2.
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 designed to be not less than three times of the dead weight and the sum of the friction force generated when the floating plate rises; 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 is achieved.
The design and manufacture of the stainless steel explosion-proof and fireproof all-welded honeycomb core floating plate in the embodiment 2 conform to the requirements of design specification of vertical cylindrical steel welded oil tank (GB50341-2014) and construction and acceptance specification of vertical cylindrical steel welded storage tank (GB50128-2014) and the relevant specification of API Std 650.
All parts (except the honeycomb core) of the stainless steel explosion-proof fireproof all-welded honeycomb core floating plate are made of stainless steel.
The stainless steel explosion-proof fireproof all-welded honeycomb core floating disc ensures unimpeded normal operation on the full stroke. The sealing is performed twice, the inner floating disc and the accessories thereof are not interfered with other accessories on the tank body, and the contact part of the inner floating disc and the liquid level is not leaked.
The design buoyancy of the inner floating plate is not less than the sum of three times of the self weight and 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 strength of the floating disc module reaches more than 7 times of the API650 requirement, the sealing devices are arranged on the edge of the inner floating disc and the position of the inner floating disc penetrating through the holes of the planking, 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 stainless steel 304, and the standard size of a single floating disc of the floating disc is 3000mmx550mmx90 mm; the material is 304 stainless steel materials, the module upper cover plate is 0.6, the lower cover plate is 1.2, the internal honeycomb core is 16mm in internal hexagonal length and 0.18 in thickness, and the honeycomb core is welded in the stainless steel shell.
The size of the edge non-standard module is determined according to a design drawing, the length size range is 400-3000 mm, and a seal is additionally arranged when the pipe fittings, the supporting legs, the guiding devices and the like penetrate through the inner floating plate; 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 immersion type bag sealing, and secondary sealing is carried out: the elastic pressure plate metal fireproof scraper (capable of achieving flame retardance) is made of XPE.
The rubber belt is an entire adhesive tape and cannot be spliced in the length direction and the width direction. The requirements in the chemical composition of wrought aluminum and aluminum alloy (GB/T3190-2008) are required to be met; the minimum nominal thickness of the used sheet material meets the regulations in the design Specification for vertical cylindrical steel welded tanks (GB 50341-2014).
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 installing a floating plate in a stainless steel explosion-proof and fire-proof all-welded honeycomb core.
This installation method is directed to a stainless steel explosion proof fire proof all welded honeycomb core floating plate as in example 2 above.
The installation method comprises the following steps:
and the sealing connection between the adjacent floating plate modules 2-4 and between the floating plate modules 2-4 and the main beams 2-3 is sequentially realized.
This embodiment 3 is through above-mentioned mounting means, has fine realization the installation of the floating plate in the stainless steel explosion-proof fire prevention all-welded honeycomb core, can ensure 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.
The honeycomb floating plates 1-5 are stainless steel explosion-proof fireproof all-welded honeycomb core floating plates 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. A method for installing a floating plate in a stainless steel explosion-proof fireproof all-welded honeycomb core is characterized in that,
the floating disc in the stainless steel explosion-proof fireproof all-welded honeycomb core 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 honeycomb core positioned between the upper cover plate and the lower cover plate; wherein:
the upper cover plate and the lower cover plate are made of stainless steel materials, and the honeycomb core is made of aluminum alloy materials;
the upper cover plate and the top of the honeycomb core are welded to form a seal, and the lower cover plate and the bottom of the honeycomb core are welded 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 the floating plate in the stainless steel explosion-proof and fire-proof all-welded honeycomb core according to claim 1,
two adjacent floating plate modules are connected through welding to form sealing.
3. The method for installing the floating plate in the stainless steel explosion-proof and fire-proof all-welded honeycomb core 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 welding to form sealing.
4. The method for installing the floating plate in the stainless steel explosion-proof and fire-proof all-welded honeycomb core according to claim 3,
the upper cover plate of the floating disc module horizontally protrudes out of the side surface of the floating disc module;
the upper part of the main beam is positioned at the upper cover plate of the floating disc module, and the lower part of the main beam is positioned at the lower cover plate of the floating disc module;
the upper part of the main beam is welded with the protruding part of the upper cover plate of the floating plate module;
the lower part of the main beam is connected with the lower cover plate of the floating plate module in a welding way.
5. The method for installing the floating plate in the stainless steel explosion-proof and fire-proof all-welded honeycomb core according to claim 1,
in the stainless steel explosion-proof fireproof all-welded honeycomb core 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.
6. The method for installing the floating plate in the stainless steel explosion-proof and fire-proof all-welded honeycomb core according to claim 1,
the design buoyancy of the stainless steel explosion-proof fireproof all-welded honeycomb core inner floating disc is not less than the sum of three times of the self weight and the friction force generated when the floating disc rises, and the immersion depth of the floating disc is not less than 10 mm.
7. The method for installing the floating plate in the stainless steel explosion-proof and fire-proof all-welded honeycomb core according to claim 1,
and a sealing device is arranged at the edge of the floating disc in the stainless steel explosion-proof fireproof all-welded honeycomb core.
8. The method for installing the floating plate in the stainless steel explosion-proof and fire-proof all-welded honeycomb core according to claim 1,
the strength of the float module is seven times that required by the API650 specification.
9. The method for installing the floating plate in the stainless steel explosion-proof and fire-proof all-welded honeycomb core according to claim 1,
the thickness of the floating plate in the stainless steel explosion-proof fireproof all-welded honeycomb core is 90 mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111806900A (en) * | 2020-08-14 | 2020-10-23 | 湖南长江石化环保科技有限公司 | Filling compartment type inner floating roof |
| CN112875061A (en) * | 2021-03-01 | 2021-06-01 | 北青(江苏)环境装备有限公司 | Novel beam-shaped floating disc |
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Application publication date: 20200522 |
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| RJ01 | Rejection of invention patent application after publication |