CN204250668U - A kind of hermetically-sealed construction without oil-gas space of floating roof tank floating plate - Google Patents
A kind of hermetically-sealed construction without oil-gas space of floating roof tank floating plate Download PDFInfo
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- CN204250668U CN204250668U CN201420678244.0U CN201420678244U CN204250668U CN 204250668 U CN204250668 U CN 204250668U CN 201420678244 U CN201420678244 U CN 201420678244U CN 204250668 U CN204250668 U CN 204250668U
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Abstract
The utility model relates to a kind of hermetically-sealed construction without oil-gas space of floating roof tank floating plate, be made up of once sealing device and secondary sealer, described once sealing device comprises once sealing pressing plate A, once sealing pressing plate B and once sealing adhesive tape, described secondary sealer comprises the second vaporization prevention barrier film, the top of described second vaporization prevention barrier film is fixed backward tank skin by once sealing pressing plate B and extends and scroll up around to elastic bearing plate upper end along tank skin and be fixed by it, form the upper toroidal cavity of secondary seal at floating roof upper periphery with the first vaporization prevention barrier film after described second evaporation membrane winding, in chamber, filling is to one, the low-density sponge filler of oil-gas space occupy-place between secondary seal.The secondary seal that the utility model is formed tank body, not only improves petrol storage tank overall sealing performance, and reduces the oil-gas accumulation between first and second sealing, add safety factor, eliminate disaster hidden-trouble, and cost is lower, have large-scale promotion meaning.
Description
Technical field
the utility model relates to a kind of floating roof hermetically-sealed construction for large-scale oil storage tank, is specifically related to a kind of hermetically-sealed construction without oil-gas space of floating roof tank floating plate.
Background technology
The circular clearance of 200 ~ 250mm is about had between the outward flange of floating roof tank floating plate and tank shell, this gap is the indispensable space that floating plate runs up and down, also be that it distributes the main thoroughfare of oil gas, usually adopt sealing arrangement to seal it, to reduce the boil-off loss of oil gas.U.S. API650 appendix C and Japanese JISB8501 all require employing first and second sealing arrangement, China GB50737 " oil depot warehouse design regulation " 7.5.7.1 " sealing arrangement should be made up of once sealing and secondary seal "." PetroChina Company Limited.'s clean cargo storage tank fire protection technology (trying) " 3.7.11 " floater just arranges once sealing and secondary seal regulation ".The actual production management operating situation of current Chinese large-sized storage tank, be substantially all provided with first and second sealing arrangement, its structure as shown in Figure 1.Petrol storage tank is subject to the impact of construction quality and manufacturing errors, there is tank skin fitfull problem, once sealing then occurs in floating roof lifting process not tight, the space between causing once sealing lower space and first and second sealing communicates, and oil gas goes upward between a secondary seal; Or in the upper and lower operational process of storage tank floating roof, oil product is solidifying hangs in the first and second relatively-stationary space of sealing, make between first and second sealing or between itself and once sealing bottom, form the explosion hazard area interconnected, oil-gas space is fired owing to existing, spark phenomenon is there is in this position in process if lightning current is released, then set off an explosion most probably, cause seal ring fire, show the result of several the storage tank fire accident analysis occurred in recent years, the storage tank of presence of fire accident all have employed the secondary seal structure of oil-gas space.Therefore the oil-gas space how eliminated between first and second sealing is the problem of domestic and international expert discussion exploitation always, and China Petrochemical Industry 2011 [754] 4.1.4 " should reduce the oil-gas space between once sealing and secondary seal " as far as possible.The employing induced ventilation that domestic oil product Transportation Enterprise has or the method for inflated with nitrogen reduce the oil-gas accumulation between a secondary seal.But also there is the large or high in cost of production defect of security risk coefficient.
Chinese patent CN101168401A discloses a kind of compound sealing device and the application in floating roof tank seal thereof.This device has the wear-resisting band of a slat gum, is provided with diaphragm of rubber in the middle part of its side, and be divided into upper and lower two parts space, wherein elastic caoutchouc capsule is established in upper part space, and inside fill lightweight casting resin, lower space establishes fluid filled sac.Fluid filled sac eliminates the oil-gas space between rubber wear-resisting band and floating roof tank pasta, and the oil-gas space between first and second sealing eliminated by elastic caoutchouc capsule.Sheet rubber with circular bolt holes is bolted on the coupling assembling place of secondary sealer rubber flap.
According to the technical characteristic of this patent, when floating plate real-world operation, the circular clearance of floating plate boundary plank and tank skin packs tightly rubber bag tank by rubber wear-resisting band, (oils in the long-range storage tank of liquid specific gravity of non-oils after rubber bag tank is filled with certain quantity of fluid, oils proportion is 8.6), because its diameter is larger, conduct oneself with dignity also large, certain pressure is produced to tank skin, when in floating plate uphill process, this pressure is the friction force between rubber wear-resisting band and tank skin, direction is downward, rubber wear-resisting band pulling force vertically downward can be caused, antifriction rubber band and rubber flap directly connect together, bearing plate produces certain pressure to rubber flap makes its being attached on tank skin tightly jointly rise with floating plate, if the downward pulling force that now rubber tape produces adds that the resistance of rubber flap uphill process exceedes the holding capacity of bearing plate, then bearing plate is turned up downwards, light then cause the inefficacy of secondary seal, heavy then cause whole floating roof to sink.In addition, owing to arranging elastic caoutchouc capsule and fluid filled sac as the inner bag of rubber wear-resisting band, not only increase weight and also add equipment cost.
Summary of the invention
For above-mentioned problems of the prior art, the purpose of this utility model is the hermetically-sealed construction without oil-gas space providing a kind of floating roof tank floating plate, it is keeping buoyancy of storage tank floating plate and under the prerequisite that can run up and down in sealed states, eliminate oil-gas accumulation, fundamentally eliminate petrol storage tank disaster hidden-trouble.
The technical scheme that the utility model is taked for realizing its object: a kind of hermetically-sealed construction without oil-gas space of floating roof tank floating plate, be made up of once sealing device and secondary sealer, described once sealing device comprises once sealing pressing plate A, once sealing pressing plate B and once sealing adhesive tape, and described once sealing pressing plate A and once sealing pressing plate B is fixed on the sealing adapter plate of floating roof periphery; Described once sealing adhesive tape is fixed through once sealing pressing plate A and once sealing pressing plate B, and forms lower toroidal cavity at floating roof periphery, and in chamber, filling once sealing filler, forms the once sealing to tank body; Described secondary sealer comprises elastic bearing plate, the first vaporization prevention barrier film and to be positioned at above sealing adapter plate and to be fitted in reservoir walls and the rubber rubbing board that can move up and down with floating roof, described elastic bearing plate and the first vaporization prevention barrier film are located between described rubber rubbing board and described sealing adapter plate, and described first vaporization prevention barrier film is positioned at below elastic bearing plate; Described secondary sealer also comprises the second vaporization prevention barrier film, the top of described second vaporization prevention barrier film is fixed backward tank skin by once sealing pressing plate B and extends and scroll up around to elastic bearing plate upper end along tank skin and be fixed by it, form the upper toroidal cavity of secondary seal after described second evaporation membrane winding at floating roof upper periphery with the first vaporization prevention barrier film, in described upper toroidal cavity, filling is to the secondary seal filler of oil-gas space occupy-place between first and second sealing.
Further, described first and second gland packing adopts low-density sponge light filler, and model is JM-15 or JM-20.
Further, the end of described once sealing pressing plate A and once sealing pressing plate B is for upwarping structure and wrapping up glue-line.
from technique scheme:the upper toroidal cavity that formed at floating roof periphery together with barrier film is evaporated with first and direct filling low-density sponge filler after second vaporization prevention membrane winding, form the secondary seal to tank body, realize the occupy-place to oil-gas space between first and second sealing, thus decrease the oil-gas accumulation between first and second sealing; The utility model eliminates inner bag but reaches petrol storage tank overall sealing performance equally, and storage tank floating plate can be kept normally to run up and down with oil level, adds safety factor, eliminate the object of disaster hidden-trouble, and cost is lower, have large-scale promotion meaning.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Fig. 1 is first and second sealing arrangement sectional structure schematic diagram of the medium-and-large-sized petrol storage tank floating roof of present technology;
Fig. 2 is the utility model structure cross-sectional schematic;
Fig. 3 is the structure for amplifying schematic diagram of B in Fig. 2.
In figure: 1, rubber rubbing board, 2, elastic bearing plate, 3, evaporation barrier film, 31, first evaporation barrier film, 32, the second evaporation barrier film, 4, oil-gas space, 5, once sealing adhesive tape, 6, floating roof, 7, once sealing filler, 8, once sealing pressing plate A, 9, once sealing pressing plate B, 10, tank skin, 11, secondary seal filler, 12, sealing adapter plate.
Detailed description of the invention
As shown in Figure 2, the utility model is made up of once sealing device and secondary sealer.
Once sealing device comprises once sealing pressing plate A 8, once sealing pressing plate B 9 and once sealing adhesive tape 5.Once sealing pressing plate A 8 and once sealing pressing plate B 9 is bolted on the sealing adapter plate of floating roof 6 periphery; The initiating terminal of once sealing adhesive tape 5 to be pressed in below once sealing pressing plate A 8 and to paste floating roof 6 outer wall and returns downwards and extend tank skin 10, again along tank skin upwards, tail end to be wound to below once sealing pressing plate B 9 and to be fixed through it, once sealing tape roll around after form lower toroidal cavity at floating roof periphery, filling once sealing filler 7 in chamber, makes the once sealing formed between floating roof 6 periphery and tank skin tank body.
Secondary sealer comprises rubber rubbing board 1, elastic bearing plate 2 and the first vaporization prevention barrier film 31.Rubber rubbing board 1 to be positioned at above sealing adapter plate 12 and to be fitted in reservoir walls can moving up and down with floating roof 6.Elastic bearing plate 2 upper end is bolted on the lower end of rubber rubbing board 1, and elastic bearing plate 2 lower end is bolted on the sealing adapter plate of floating roof 6 periphery.First vaporization prevention barrier film 31 to be positioned at below elastic bearing plate 2 and to be fixed by it.The initiating terminal that secondary sealer is also provided with the second vaporization prevention barrier film 32, second vaporization prevention barrier film 32 is fixed by once sealing pressing plate B 9 and extends to tank skin 10, then scrolls up around to elastic bearing plate 2 upper end along tank skin and be fixed by it.Form toroidal cavity with the first vaporization prevention barrier film at floating roof upper periphery after second evaporation barrier film 32 reels and form secondary seal to tank body.And filling secondary seal filler 11, second vaporization prevention barrier film 32 contacts tank skin, forms the secondary seal to tank body.Low-density sponge filler is filled to oil-gas space occupy-place between first and second sealing in upper toroidal cavity.First and second gland packing all adopts low-density sponge light filler, and model is JM-15 or JM-20.End edge, the wedge angle polishing of once sealing pressing plate A 8 and secondary seal pressing plate B 9 are round and smooth, and adopt and upwarp structure and do the process of parcel glue-line, encapsulate layer thickness is 2-3mm.
According to designing requirement, in standard clearance condition, once sealing arrangement is thrust on 12Kg(unit circumference to tank skin pressure), rubber seal tape is produced according to HG/2809 " floater soft sealer rubber seal tape " design.
Above are only embodiment of the present utility model, to one skilled in the art, the utility model has multiple change and change.Allly within invention thought of the present utility model and principle, make any amendment, equivalently to replace, improve, all should be included within protection domain of the present utility model.
Claims (3)
1. the hermetically-sealed construction without oil-gas space of a floating roof tank floating plate, be made up of once sealing device and secondary sealer, described once sealing device comprises once sealing pressing plate A, once sealing pressing plate B and once sealing adhesive tape, and described once sealing pressing plate A and once sealing pressing plate B is fixed on the sealing adapter plate of floating roof periphery; Described once sealing adhesive tape is fixed through once sealing pressing plate A and once sealing pressing plate B, and forms lower toroidal cavity at floating roof periphery, and in chamber, filling once sealing filler, forms the once sealing to tank body; Described secondary sealer comprises elastic bearing plate, the first vaporization prevention barrier film and to be positioned at above sealing adapter plate and to be fitted in reservoir walls and the rubber rubbing board that can move up and down with floating roof, described elastic bearing plate and the first vaporization prevention barrier film are located between described rubber rubbing board and described sealing adapter plate, and described first vaporization prevention barrier film is positioned at below elastic bearing plate;
it is characterized in that:described secondary sealer also comprises the second vaporization prevention barrier film, the top of described second vaporization prevention barrier film is fixed backward tank skin by once sealing pressing plate B and extends and scroll up around to elastic bearing plate upper end along tank skin and be fixed by it, form the upper toroidal cavity of secondary seal after described second evaporation membrane winding at floating roof upper periphery with the first vaporization prevention barrier film, in described upper toroidal cavity, filling is to the secondary seal filler of oil-gas space occupy-place between first and second sealing.
2. the hermetically-sealed construction without oil-gas space of floating roof tank floating plate according to claim 1, is characterized in that: described first and second gland packing adopts low-density sponge light filler, and model is JM-15 or JM-20.
3. the hermetically-sealed construction without oil-gas space of floating roof tank floating plate according to claim 1, is characterized in that: the end of described once sealing pressing plate A and once sealing pressing plate B is for upwarping structure and wrapping up glue-line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420678244.0U CN204250668U (en) | 2014-11-14 | 2014-11-14 | A kind of hermetically-sealed construction without oil-gas space of floating roof tank floating plate |
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| CN201420678244.0U CN204250668U (en) | 2014-11-14 | 2014-11-14 | A kind of hermetically-sealed construction without oil-gas space of floating roof tank floating plate |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002120A (en) * | 2019-03-27 | 2019-07-12 | 江苏德大石化科技有限公司 | A kind of storage tank compensates bellows high resiliency sealing device entirely |
| CN110027809A (en) * | 2019-03-28 | 2019-07-19 | 江苏德大石化科技有限公司 | A kind of rim space seal modules of storage tank |
| CN110451105A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | The full-scale type once sealing device and method in External floating roof tank floating plate edge |
| CN110454573A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | The composite seal device and its installation method of floating roof tank super-double-hydrophobic surface |
| 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 |
| CN111634563A (en) * | 2020-05-28 | 2020-09-08 | 江苏科强新材料股份有限公司 | Floating roof tank sealing structure based on tongue-shaped sealing belt and assembling process thereof |
| CN111746950A (en) * | 2020-07-28 | 2020-10-09 | 安庆特种橡塑股份有限公司 | High-efficiency oil-free air sealing device for floating roof storage tank |
| CN111792211A (en) * | 2019-11-18 | 2020-10-20 | 中国石油天然气集团有限公司 | Floating roof sealing device, floating roof and floating roof tank |
| CN114348483A (en) * | 2021-12-02 | 2022-04-15 | 安徽美祥实业有限公司 | Sealing device and method for eliminating oil-gas space |
-
2014
- 2014-11-14 CN CN201420678244.0U patent/CN204250668U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451105A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | The full-scale type once sealing device and method in External floating roof tank floating plate edge |
| CN110454573A (en) * | 2018-05-07 | 2019-11-15 | 中国石油化工股份有限公司 | The composite seal device and its installation method of floating roof tank super-double-hydrophobic surface |
| 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 |
| 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 |
| CN110002120A (en) * | 2019-03-27 | 2019-07-12 | 江苏德大石化科技有限公司 | A kind of storage tank compensates bellows high resiliency sealing device entirely |
| CN110027809A (en) * | 2019-03-28 | 2019-07-19 | 江苏德大石化科技有限公司 | A kind of rim space seal modules of storage tank |
| CN111792211A (en) * | 2019-11-18 | 2020-10-20 | 中国石油天然气集团有限公司 | Floating roof sealing device, floating roof and floating roof tank |
| CN111634563A (en) * | 2020-05-28 | 2020-09-08 | 江苏科强新材料股份有限公司 | Floating roof tank sealing structure based on tongue-shaped sealing belt and assembling process thereof |
| CN111746950A (en) * | 2020-07-28 | 2020-10-09 | 安庆特种橡塑股份有限公司 | High-efficiency oil-free air sealing device for floating roof storage tank |
| CN114348483A (en) * | 2021-12-02 | 2022-04-15 | 安徽美祥实业有限公司 | Sealing device and method for eliminating oil-gas space |
| CN114348483B (en) * | 2021-12-02 | 2023-06-16 | 安徽美祥实业有限公司 | Sealing device and method for eliminating oil gas space |
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