CN104370002B - Floating roof tank floating pan continuous one-piece airtight sealing structure without oil gas space - Google Patents
Floating roof tank floating pan continuous one-piece airtight sealing structure without oil gas space Download PDFInfo
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- CN104370002B CN104370002B CN201410641645.3A CN201410641645A CN104370002B CN 104370002 B CN104370002 B CN 104370002B CN 201410641645 A CN201410641645 A CN 201410641645A CN 104370002 B CN104370002 B CN 104370002B
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- sealing
- floating
- floating roof
- sealant tape
- tank
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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
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Building Environments (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention relates to a floating roof tank floating pan continuous one-piece airtight sealing structure without an oil gas space. The sealing structure comprises a sealing tape of which the section is in a T shape, and the sealing tape is composed of a sealing tape side A, a sealing tape side B and a sealing tape side C. The sealing tape side A and the sealing tape side C form a lower annular cavity on the periphery of a floating roof, the lower annular cavity is filled with primary sealing light filling, and therefore a tank body is sealed primarily. The sealing tape side B and an evaporation-prevention membrane form an upper annular cavity on the periphery of the floating roof, the upper annular cavity is filled with secondary sealing light filling, and therefore the tank body is sealed secondarily. The sealing structure not only can play a role in sealing, but also will not increase downward pulling force for a rubber scraping plate in the ascending process of a floating pan, and a secondary sealing pressure bearing plate connected with the scraping plate still can exert certain pressing force on the wall of the tank. The overall seal performance of the oil storage tank is improved, besides, oil gas gathering occurring between primary sealing and secondary sealing is reduced, fire hazards are eliminated, and the cost is low.
Description
Technical control domain
The present invention relates to a kind of floating roof sealing structure for large-scale oil storage tank is and in particular to a kind of floating roof tank floating plate
Continue the sealing structure of disjunctor closed no oil-gas space.
Background technology
The annular gap of 200～250mm is there are about, this gap is floating plate between the outward flange of floating roof tank floating plate and tank shell
The indispensable space run up and down, is also that it distributes the main thoroughfare of oil gas, generally using sealing device, it is sealed, to subtract
The evaporation loss of few oil gas.U.S.'s API650 appendix C and Japanese JISB8501 are required to using first and second sealing device, China
GB50737 《Oil depot warehouse design specification》7.5.7.1 " sealing device should be made up of once sealing and secondary seal ".《In
Petroleum light component product storage tank fire protection technology（Tentative）》" floating top oil tank just arranges once sealing and secondary seal rule to 3.7.11
Fixed ".The actual production management operating situation of Chinese large-sized storage tank, is all provided with first and second sealing device, its structure substantially at present
As shown in Figure 1.Oil storage tank is affected by construction quality and foozle, there is the irregular problem of tank skin, lifted in floating roof
Then occur once sealing not tight in journey, lead to the space between once sealing lower space and first and second sealing to communicate, oil gas is up
To a secondary seal；Or in the upper and lower running of storage tank floating roof oil product coagulate hang over the relatively-stationary space of first and second sealing
In, make between first and second sealing or it forms the explosion hazard area interconnecting and once sealing bottom between, due to existing
Fire oil-gas space, if lightning current occurs spark phenomenon in this position during releasing, be likely to cause blast, cause close
Seal fire, shows to the result of several storage tank fire accident analysis occurring in recent years, occurs the storage tank of fire incident all to adopt
With there being the secondary seal structure of oil-gas space.The oil-gas space therefore how eliminating between first and second sealing is always domestic
The problem of outer expert discussion exploitation, sinopec 2011 [754] 4.1.4 " should reduce between once sealing and secondary seal as far as possible
Oil-gas space ".The method using forced ventilation or inflated with nitrogen that domestic oil product Transportation Enterprise has to reduce a secondary seal it
Between oil-gas accumulation.But also deposit the defects such as security risk coefficient is big or cost is high,
Chinese patent CN101168401A discloses a kind of compound sealing device and its answering in floating roof tank seal
With.This device has the wear-resisting band of a slat gum, is provided with diaphragm of rubber in the middle part of its side, is divided into upper and lower two parts space, wherein goes up
Segment space sets elastic caoutchouc capsule, inside fills lightweight casting resin, and lower space sets fluid filled sac.Fluid filled sac eliminate rubber wear-resisting band with
Oil-gas space between floating roof tank pasta, elastic caoutchouc capsule eliminates the oil-gas space between first and second sealing.With circular spiral shell
The sheet rubber of keyhole is bolted at the coupling assembly of secondary sealer rubber flap.
According to the technical characteristic of this patent, when floating plate actual motion, the annular gap of floating plate margin plate and tank skin is by rubber
Glue wear-resistant strip packs tightly rubber bag tank, after rubber bag tank is filled with certain quantity of fluid（Oils in the long-range storage tank of liquid specific gravity of non-oils, oil
Class proportion is 8.6）, because it is relatively large in diameter, deadweight is also big, produces certain pressure to tank skin, when in floating plate uphill process, this
Pressure is the frictional force between rubber wear-resisting band and tank skin, and rubber wear-resisting band pulling force vertically downward downwards, can be caused in direction,
Abrasive rubber band and rubber flap are directly connected together, and bearing plate produces certain pressure and makes its being attached to tightly to rubber flap
Jointly rise with floating plate on tank skin, if the downward pulling force that now rubber strip produces, add the resistance of rubber flap uphill process
Exceed the endurance of bearing plate, then bearing plate is turned up downwards, gently then cause the inefficacy of secondary seal；Heavy then cause under whole floating roof
Heavy.Further, since arranging elastic caoutchouc capsule and fluid filled sac as the inner bag of rubber wear-resisting band, not only increasing weight also increases
Equipment cost.
Content of the invention
For above-mentioned problems of the prior art, it is an object of the invention to provide the holding of a kind of floating roof tank floating plate
The sealing structure of continuous disjunctor closed no oil-gas space, it can eliminate oil-gas accumulation, and the fire being inherently eliminated oil storage tank is hidden
Suffer from and that floating roof can be kept to run up and down is smooth.
The present invention is to realize the technical scheme that its purpose is taken：The lasting disjunctor closed no oil gas of floating roof tank floating plate
The sealing structure in space, is made up of once sealing device and secondary sealer, and described once sealing device includes once sealing
Pressing plate A, once sealing pressing plate B and sealant tape, described once sealing pressing plate A and once sealing pressing plate B is fixed on floating roof periphery
In the sealing fixed plate at edge；Described secondary sealer includes rubber flap, elastic bearing plate and vaporization prevention barrier film, described bullet
Property bearing plate and vaporization prevention barrier film located at described sealing rubbing board and described sealing fixed plate between, described vaporization prevention barrier film be located at bullet
Below property bearing plate；The section of described sealant tape is in T shape, is divided into sealant tape A in, sealant tape B and sealant tape C
Side；Described sealant tape A while top and top during sealant tape C be pressed abd fixed on once sealing pressing plate A and once respectively
Below sealing clamp B, sealant tape A while and toroidal cavity, filling one in it under constituting in floating roof periphery during sealant tape C
Secondary sealing light filler, forms the once sealing to tank body；Described sealant tape B edge tank skin is upwardly under described sealing rubbing board
Side is simultaneously pressed abd fixed on sealing rubbing board bottom, described sealant tape B side and described anti-steaming by described elastic bearing plate upper end
Send out barrier film toroidal cavity on floating roof periphery is constituted, filling light filler in it, with airtight occupy-place, eliminates between first and second sealing
Oil-gas space.
Described light filler is low-density sponge, its model JM-15 or JM-20.
The end of described once sealing pressing plate A and once sealing pressing plate B is to upwarp structure and wrap up glue-line.
Knowable to technique scheme：The section of the once sealing adhesive tape of the present invention is in T shape, wherein：Sealant tape A side
Toroidal cavity, filling once sealing light filler in it under floating roof periphery composition, forms to tank body with sealant tape C side
Once sealing；Sealant tape B side and vaporization prevention barrier film toroidal cavity on floating roof periphery is constituted, in it, filling secondary seal is light
Matter filler, forms the secondary seal to tank body.Because once sealing adopts light filler, its proportion is less than the proportion of oil, no
Sealing function only can be played, and the downward pulling force of rubber flap will not be increased in floating plate uphill process, and be connected with scraper plate
Secondary seal bearing plate still can produce certain thrust to tank skin but still floating roof can be kept to run up and down smooth.Not only
Improve oil storage tank overall sealing performance, and reduce the oil-gas accumulation between first and second sealing, increased safety coefficient, eliminate
Disaster hidden-trouble, and cost is relatively low, have the meaning of large-scale promotion.
Brief description
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
Fig. 1 is first and second sealing device cross section structure diagram of present technology medium-and-large-sized oil storage tank floating roof；
Fig. 2 is present configuration cross-sectional schematic；
Fig. 3 is the mplifying structure schematic diagram of A in Fig. 2；
Fig. 4 is the sealant tape cross-sectional schematic that this is in invention.
In figure：1st, seal rubbing board.2nd, elastic bearing plate, 3, vaporization prevention barrier film, 4, oil-gas space, 5, sealant tape, 51, close
Sealed adhesive tape A side, 52, sealant tape B side, 53, sealant tape C side, 54, adhesive tape three side tie point, 6, floating roof, 7, once sealing solid
Body filler, 8, once sealing pressing plate A, 9, once sealing pressing plate B, 10, tank skin, 11, secondary seal filler.
Specific embodiment
As shown in Figure 2,3, the present invention is made up of once sealing device and secondary sealer.
Once sealing device includes once sealing pressing plate A 8, once sealing pressing plate B 9 and sealant tape 5.Sealant tape 5
The "T"-shaped shape in section being in, by sealant tape A, in 51, sealant tape B, 52 and sealant tape C sides 53 are constituted, as shown in Figure 4.One
Secondary sealing clamp A 8 and once sealing pressing plate B 9 is bolted in the sealing fixed plate of floating roof 6 periphery；Sealant tape A
The initiating terminal on side 51 is pressed in below once sealing pressing plate A 8 and pastes floating roof 6 outer wall transfers downwards to extend to tank skin 10 afterwards, then along tank
Wall is upwardly into adhesive tape three side tie point 54；Sealant tape C side 53 initiating terminal is pressed in once sealing pressing plate B 9 times and prolongs to tank skin 10
Extend adhesive tape three side tie point 54, sealant tape A while and form lower toroidal cavity in floating roof periphery during sealant tape C, fill in chamber
Fill out once sealing filler 7, make to be formed the once sealing to tank body between floating roof 6 periphery and tank skin.Sealant tape B side 52 is from adhesive tape
Three side tie points 54 are fixed to sealing rubbing board 1 lower section and through elastic bearing plate 2 upper end upwardly along tank skin.
Secondary sealer includes sealing rubbing board 1, elastic bearing plate 2 and the vaporization prevention barrier film that can move up and down with floating roof 6
3.Rubber flap 1 is located at the top of sealing fixed plate, and is posted by tank skin.Elastic bearing plate 2 upper end is bolted on close
The lower end of envelope rubbing board 1, elastic bearing plate 2 lower end is bolted in the sealing fixed plate of floating roof 6 periphery.Vaporization prevention barrier film
3 be fixed by elastic bearing plate 2 and be disposed below.Vaporization prevention barrier film 3 and sealant tape B side 52 were in floating roof 6 last week
While forming toroidal cavity filling secondary seal filler 11, sealant tape B side 52 contacts tank skin, is formed secondary close to tank body
Envelope.First and second airtight and watertight padding adopts low-density sponge, its model JM-15 or JM-20.Once sealing pressing plate 8 and secondary seal
The end edge of pressing plate 9, wedge angle polishing are round and smooth, and using upwarping structure and making to wrap up glue-line process, bag bondline thickness is 2-3mm.
According to design requirement, under the conditions of standard clearance, once sealing device is 12Kg to tank skin pressure（On unit circumference
Thrust）, rubber seal tape is according to HG/2809《Floating top oil tank soft sealer rubber seal tape》Design produces.
Above are only embodiments of the invention, it will be apparent to those skilled in the art that the present invention have multiple change and
Change.Within all invention thought in the present invention and principle, making any modification, equivalent, improve etc., all should include at this
Within the protection domain of invention.
Claims (3)
1. the sealing structure of the lasting disjunctor closed no oil-gas space of floating roof tank floating plate, by once sealing device and secondary close
Seal apparatus are constituted, and described once sealing device includes once sealing pressing plate A, once sealing pressing plate B and sealant tape, described once
Sealing clamp A and once sealing pressing plate B is fixed in the sealing fixed plate of floating roof neighboring；Described secondary sealer includes
Rubber flap, elastic bearing plate and vaporization prevention barrier film, described elastic bearing plate and vaporization prevention barrier film are located at sealing rubbing board and described
Between sealing fixed plate, described vaporization prevention barrier film is located at below elastic bearing plate；It is characterized in that：The section of described sealant tape
In T shape, it is divided into sealant tape A in, sealant tape B and sealant tape C side；The top on described sealant tape A side and sealing
The top on adhesive tape C side is pressed abd fixed on below once sealing pressing plate A and once sealing pressing plate B respectively, sealant tape A side and sealing
Both adhesive tape C sides toroidal cavity, filling once sealing light filler in it under floating roof periphery composition, form to tank body once
Sealing；Described sealant tape B edge tank skin is upwardly into below described sealing rubbing board and by described elastic bearing plate upper end compression
It is fixed on sealing rubbing board bottom, described sealant tape B side and described vaporization prevention barrier film toroidal cavity on floating roof periphery is constituted,
In it, filling light filler, with airtight occupy-place, eliminates the oil-gas space between first and second sealing.
2. the sealing structure of the lasting disjunctor closed no oil-gas space of floating roof tank floating plate according to claim 1, its
It is characterised by：Described light filler is low-density sponge, its model JM-15 or JM-20.
3. the sealing structure of the lasting disjunctor closed no oil-gas space of floating roof tank floating plate according to claim 1, its
It is characterised by：The end of described once sealing pressing plate A and once sealing pressing plate B is to upwarp structure and wrap up glue-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410641645.3A CN104370002B (en) | 2014-11-14 | 2014-11-14 | Floating roof tank floating pan continuous one-piece airtight sealing structure without oil gas space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410641645.3A CN104370002B (en) | 2014-11-14 | 2014-11-14 | Floating roof tank floating pan continuous one-piece airtight sealing structure without oil gas space |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104370002A CN104370002A (en) | 2015-02-25 |
| CN104370002B true CN104370002B (en) | 2017-02-08 |
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| CN201410641645.3A Active CN104370002B (en) | 2014-11-14 | 2014-11-14 | Floating roof tank floating pan continuous one-piece airtight sealing structure without oil gas space |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180112929A1 (en) * | 2015-05-21 | 2018-04-26 | Basf Se | Container for storing a liquid, and use thereof |
| CN105540081B (en) * | 2015-12-29 | 2018-07-06 | 中国石油化工股份有限公司青岛安全工程研究院 | External floating roof tank spring-compensating type soft sealer |
| CN105460436B (en) * | 2015-12-29 | 2018-10-12 | 中国石油化工股份有限公司 | Sealed pressure Self-adjusting External floating roof tank floating plate sealing device |
| CN105480613B (en) * | 2016-01-08 | 2018-11-30 | 鞍山市宏兴石化设备厂 | Oil tank is without oil-gas space sealing device |
| CN107215581A (en) * | 2016-03-22 | 2017-09-29 | 中国石油化工股份有限公司 | Totally enclosed type floating roof tank |
| CN106586302A (en) * | 2017-02-13 | 2017-04-26 | 印炎 | Honeycomb floating tray system for cylinder storage tank |
| CN110454573B (en) * | 2018-05-07 | 2020-07-24 | 中国石油化工股份有限公司 | Composite sealing device with super-amphiphobic surface for floating roof storage tank and mounting method thereof |
| CN111186649B (en) * | 2018-11-14 | 2022-02-25 | 中国石油化工股份有限公司 | Super-amphiphobic surface floating plate edge sealing device for external floating roof storage tank and using method |
| CN111186646A (en) * | 2018-11-14 | 2020-05-22 | 中国石油化工股份有限公司 | Device for eliminating oil-gas space inside edge seal of external floating roof storage tank |
| CN111186648A (en) * | 2018-11-14 | 2020-05-22 | 中国石油化工股份有限公司 | Installation method of internal oil-gas space eliminating device for edge sealing of external floating roof storage tank |
| CN111792211B (en) * | 2019-11-18 | 2022-08-05 | 中国石油天然气集团有限公司 | Floating roof sealing device, floating roof and floating roof tank |
| CN113928740B (en) * | 2021-10-19 | 2023-03-24 | 威特龙消防安全集团股份公司 | Inflatable oil-free air sealing structure of external floating roof oil tank |
| CN114914059A (en) * | 2022-05-27 | 2022-08-16 | 沈阳大型电力变压器维修有限公司 | Double-seal full-vacuum embedded type diaphragm oil conservator and diaphragm assembling and using method thereof |
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