CN105889508A - Tank top edge sealing device of LNG low-temperature tank - Google Patents
Tank top edge sealing device of LNG low-temperature tank Download PDFInfo
- Publication number
- CN105889508A CN105889508A CN201610331190.4A CN201610331190A CN105889508A CN 105889508 A CN105889508 A CN 105889508A CN 201610331190 A CN201610331190 A CN 201610331190A CN 105889508 A CN105889508 A CN 105889508A
- Authority
- CN
- China
- Prior art keywords
- tank
- press strip
- annular
- tank deck
- annular press
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
Abstract
The invention discloses a tank top edge sealing device of an LNG low-temperature tank. The tank top edge sealing device comprises a first annular pressing strip fixedly arranged on the periphery of a tank top, a second annular pressing strip arranged on the inner wall of a concrete outer tank, a cage-shaped framework and a metal sealing part wrapping the periphery of the cage-shaped framework; the upper end of the cage-shaped framework is fixedly connected with the first annular pressing strip, the lower end of the cage-shaped framework is fixedly connected with the second annular pressing strip, and the cage-shaped framework is formed by a plurality of vertical pressing strips; through arrangement of the cage-shaped framework formed by the first annular pressing strip, the second annular pressing strip and the vertical pressing strips and the metal sealing part, a sealing space is formed between the tank top and the inner wall of the concrete outer tank, and the opposite sealing effect on the tank top and the inner wall of the concrete outer tank can be achieved; the phenomenon that compressed air leaks from the edge of the tank top is avoided, in the blowing-up process of the tank top, the sealing device ascends along with the tank top, friction between the metal sealing part and the inner wall of the concrete outer tank is smooth, and the metal sealing part is attached to the inner wall of the concrete outer tank all the time; and the phenomenon that a gap between the tank top and the inner wall of the concrete outer tank is changed, and consequently sealing is uneven is avoided, and construction safety and stability are improved.
Description
Technical field
The present invention relates to tank deck and blow a liter technical field, be specifically related to the tank deck edge seal of a kind of LNG cryogenic tank
Device.
Background technology
LNG cryogenic tank, i.e. LNG (Liquefied Natural Gas, liquefied natural gas) column type normal pressure is low
Temperature storage tank, can be divided into single containing, double containment and entirely contain type.The tank body of LNG cryogenic tank under normal circumstances
In inside and outside two-layer tank structure, outer tank is prestressed reinforced concrete construction, and inner canister material is 9%Ni steel, LNG
The profile of low temperature tank deck is the steel skeleton spherical cap structure of band covering, is arranged in concrete outer tank high for 38m,
Support by the bearing ring that is embedded in concrete outer tank, tank deck from high about 13m, tank deck is in the horizontal direction
Projection is the disc of a diameter of 82m, weight about 607t, a height of 51m in tank deck top after installation.Tank deck is adopted
Pouring into a mould with armored concrete, built-in billet is for ensureing the air-tightness at top.Currently, for LNG low temperature
The construction of tank tank deck is the difficult point in current whole construction work.
The existing construction method for LNG cryogenic tank tank deck has conventional construction method and air-blowing jack-block (to be called for short
Blow a liter method) two kinds, owing to the construction conventional construction method of LNG cryogenic tank tank deck is difficult to carry out, even cannot
Carrying out, therefore air-blowing jack-block becomes current most common method, and its process is: first prefabricated on ground
Arch steel tank deck, after being poured into the 10th layer when exterior wall, bearing ring is provided with, utilizes air blast to tank
Interior feeding compress wind, buoyancy produced by compress wind makes prefabricated LNG cryogenic tank tank deck along concrete outer tank
Inwall the most safely and smoothly shifts to 38 meters of eminences, and passes through bolt anchoring and be welded in concrete and pressure-bearing
On ring.
Due to during LNG cryogenic tank tank deck air-blowing jacking, between tank deck plate surrounding and the outer top tank structure of concrete
There is gap, in order to ensure air blast, in tank, while air blast, tank deck edge is not to outward leakage compress wind, past
Toward needing to take seal approach, the most conventional method is as seal at tank deck edge filling rubber peel.
But in tank deck lifting process, constantly rub between rubber peel and the outer top tank structure of concrete, thus cause patch
Closing poor effect, and rubber peel is the most wear-resisting, the compress wind easily causing local is revealed, and ultimately results on tank deck
During Shenging, balance quality is poor, and potential safety hazard even can occur.
Summary of the invention
The invention provides the tank deck side sealing apparatus of a kind of LNG cryogenic tank, to solve prior art is deposited
Seal laminating poor effect, the most wear-resisting, compress wind reveals and balance in tank deck uphill process
The safety problem that energy is poor and causes.
In order to solve above-mentioned technical problem, the technical scheme is that the tank deck limit of a kind of LNG cryogenic tank
Edge sealing device, including by being fixedly arranged on the first annular press strip of tank deck periphery, being located on the outer top tank structure of concrete
The second annular press strip and upper end and described first annular press strip are fixing is connected, lower end is annular with described second presses
Bar fixes the cage type skeleton that the some vertical press strip of connection is constituted, and is coated on described cage type skeleton periphery
Metal seal.
Further, it is additionally provided with aluminium between bottom and the outer top tank structure of described concrete of described second annular preform
Paper tinsel glass cloth.
Further, described first annular press strip, the second annular press strip and vertical press strip are respectively adopted band steel system
Become.
Further, described vertical press strip is bending, described tank deck top tank structure side outside concrete expand
?.
Further, some described vertical press strips are equidistant along described first annular press strip and the second annular press strip
Arrange, the two ends up and down of described vertical press strip respectively and described first annular press strip and second annular press strip between
It is welded and fixed.
Further, described metal seal is tight along the circumferencial direction of described cage type skeleton by some galvanized iron sheets
Close overlap joint forms.
Further, the lap width between adjacent two described galvanized iron sheets is 55～80mm.
Further, described first annular press strip is bolted to connection with the marginal texture of described tank deck.
Further, sealed silicon also it is coated with between described first annular press strip and the marginal texture of described tank deck
Glue.
Further, the radius of a circle phase of the external diameter top tank structure outer with described concrete of described second annular press strip
Adaptive.
The tank deck side sealing apparatus of the LNG cryogenic tank that the present invention provides, including by being fixedly arranged on tank deck periphery
First annular press strip, the second annular press strip being located on the outer top tank structure of concrete and upper end are first annular with described
Press strip is fixing to be connected, and the cage type that the some vertical press strip being connected is constituted is fixed, with described second annular press strip, in lower end
Skeleton, and it is coated on the metal seal of described cage type skeleton periphery.By arrange by first annular press strip,
The cage type skeleton that second annular press strip and some vertical press strips are constituted, and close at cage type skeleton periphery cladding metal
Sealing, is formed between the outer top tank structure of tank deck and concrete and seals space, it is achieved imitate both opposing seal
Really, it is to avoid compress wind is from the edge leakage of tank deck, and during tank deck blows and rises, this sealing device is along with tank deck
Together promote, friction smooth-going between metal seal and the outer top tank structure of concrete, i.e. reduce coefficient of friction,
And both fit all the time, it is to avoid tank deck gap in lifting process and between the outer top tank structure of concrete becomes
Change, thus cause sealing uneven effect, present configuration is simple, material wear-resistant is reliable, good airproof performance,
Be difficult to reveal, balance quality good, it is ensured that LNG cryogenic tank tank deck blows liter security and a high efficiency for construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of tank deck side sealing apparatus one specific embodiment of LNG cryogenic tank of the present invention
Figure；
Fig. 2 is that the planar development of tank deck side sealing apparatus one specific embodiment of LNG cryogenic tank of the present invention shows
It is intended to；
Fig. 3 is tank deck side sealing apparatus one specific embodiment and tank deck and the coagulation of LNG cryogenic tank of the present invention
The connection diagram of the outer top tank structure of soil.
Shown in figure: 100, tank deck；101, marginal texture；200, the outer top tank structure of concrete；1, first
Annular press strip；2, the second annular press strip；3, vertical press strip；4, metal seal；5, bolt；6, aluminium
Paper tinsel glass cloth.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings:
As Figure 1-3, invention provides the tank deck side sealing apparatus of a kind of LNG cryogenic tank, including by
The first annular press strip 1 being fixedly arranged on tank deck 100 periphery, the second annular being located on the outer top tank structure 200 of concrete
Press strip 2 and upper end are fixed with described first annular press strip 1 and are connected, and lower end is solid with described second annular press strip 2
The cage type skeleton that the fixed some vertical press strip 3 connected is constituted, and it is coated on the gold of described cage type skeleton periphery
Belong to seal 4.The upper end of the most vertical press strip 3 is fixing with first annular press strip 1 to be connected, lower end and the second annular
Press strip 2 is fixing to be connected, and three constitutes cage type skeleton, plays and supports and fixing effect, metal seal 4
It is coated on cage type skeleton periphery, forms an entirety, in the present embodiment, metal seal 4 with cage type skeleton
Top stretch out from the top of first annular compressing tablet 1 and bend downwards along the top of first annular compressing tablet 1, folder
Being located between the marginal texture 101 of tank deck 100 and first annular compressing tablet 1, bottom extends to the second annular pressure
Below the bottom of sheet 2, to increase the contact area of top tank structure 200 outer with concrete, improve sealing further
Property.Preferably, spiral shell is passed through between described first annular press strip 1 and the marginal texture 101 of described tank deck 100
Bolt 5 is fixing to be connected, meanwhile, the marginal texture 101 of described first annular press strip 1 and described tank deck 100 it
Between be also coated with sealing silica gel, it is ensured that between first annular press strip 1 and the marginal texture 101 of tank deck 100
Connection reliability, it is to avoid compress wind is revealed at the marginal texture 101 of tank deck 100, improves sealing property.
Concrete, the upper end of cage type skeleton is fixed on the marginal texture 101 of tank deck 100 by first annular press strip 1
On, lower end top tank structure 200 outer with concrete is adjacent to, and metal seal 4 is coated on the periphery of cage type skeleton,
I.e. metal seal 4 is located between the outer top tank structure 200 of tank deck 100, cage type skeleton and concrete, at tank deck
The space of closing is formed, it is to avoid compress wind is from tank deck 100 and coagulation between 100 and the outer top tank structure 200 of concrete
Gap between the outer top tank structure 200 of soil is revealed.
As it is shown on figure 3, between the bottom of described second annular preform 2 and the outer top tank structure 200 of described concrete
Being additionally provided with aluminium foil glass cloth 6, concrete, the upper end of aluminium foil glass cloth 6 and the bottom of first annular compressing tablet 2 are even
Connecing, lower end top tank structure 200 outer with concrete fits tightly, in order to avoid compress wind is from metal seal 4 and coagulation
Leak between the outer top tank structure 200 of soil, be further ensured that sealing effectiveness.
Preferably, described first annular press strip the 1, second annular press strip 2 and vertical press strip 3 are respectively adopted band steel
Make, i.e. form first annular band steel band press strip, the second annular band steel band press strip and vertical band steel band press strip,
To increase the height of three, improve the bonding strength with miscellaneous part.
Continuing referring to Fig. 3, described vertical press strip 3 is in bending, by described tank deck 100 to concrete outer tank
Inwall 200 side is expanded, and i.e. vertical compressing tablet 3 expands outwardly formation radian, to metal seal 4 to coagulation
Outer top tank structure 200 side of soil applies pressure so that it is and it is more tight to fit between the outer top tank structure 200 of concrete,
Achieve the opposing seal between the marginal texture 101 of tank deck 100 and the outer top tank structure 200 of concrete.
As in figure 2 it is shown, some described vertical press strips 3 are along described first annular press strip 1 and the second annular press strip 2
Spaced set, the two ends up and down of described vertical press strip 2 respectively with described first annular press strip 1 and the second ring
Being welded and fixed between shape press strip 2, bonding strength is high, reliable and stable.
Preferably, described metal seal 4 is tight along the circumferencial direction of described cage type skeleton by some galvanized iron sheets
Close overlap joint forms, and the most there is not space, in order to avoid compress wind lets out between two pieces of galvanized iron sheets,
Lap width between adjacent two described galvanized iron sheets is 55～80mm, it is ensured that bond strength and sealing effectiveness.
Preferably, the radius of a circle phase of the external diameter of the second annular press strip 2 top tank structure 200 outer with described concrete
Adaptive, it is ensured that the laminating effect between metal seal 4 and the outer top tank structure 200 of concrete, improve further
The overall performance of sealing device.
In sum, the tank deck side sealing apparatus of the LNG cryogenic tank that the present invention provides, including by being fixedly arranged on
The first annular press strip 1 of tank deck 100 periphery, the second annular press strip 2 being located on the outer top tank structure 200 of concrete
Fixing with described first annular press strip 1 with upper end being connected, lower end is fixed with the described second annular press strip 2 and is connected
The cage type skeleton that constitutes of some vertical press strip 3, and be coated on the metal sealing of described cage type skeleton periphery
Part 4.By arranging the cage being made up of first annular press strip the 1, second annular press strip 2 and some vertical press strips 3
Shape skeleton, and it is coated with metal seal 4 in cage type skeleton periphery, at the outer top tank structure of tank deck 100 and concrete
Formed between 200 and seal space, it is achieved the opposing seal effect to both, it is to avoid compress wind is from tank deck 100
Edge leakage, during tank deck 100 blows and rises, this sealing device together promotes along with tank deck 100, metal
Friction smooth-going between seal 4 and the outer top tank structure 200 of concrete, i.e. reduces coefficient of friction, and both begin
Laminating eventually, it is to avoid the tank deck 100 gap in lifting process and between the outer top tank structure 200 of concrete becomes
Change, thus cause sealing uneven effect, present configuration is simple, material wear-resistant is reliable, good airproof performance,
Be difficult to reveal, balance quality good, it is ensured that LNG cryogenic tank tank deck blows liter security and a high efficiency for construction.
Although in specification being illustrated embodiments of the present invention, but these embodiments are intended only as
Prompting, should not limit protection scope of the present invention.Carry out various province without departing from the spirit and scope of the present invention
Slightly, replace and change should be included in protection scope of the present invention.
Claims (10)
1. the tank deck side sealing apparatus of a LNG cryogenic tank, it is characterised in that include by being fixedly arranged on tank
The first annular press strip of periphery, top, the second annular press strip being located on the outer top tank structure of concrete and upper end are with described
First annular press strip is fixing to be connected, and the some vertical press strip structure being connected is fixed, with described second annular press strip, in lower end
The cage type skeleton become, and it is coated on the metal seal of described cage type skeleton periphery.
The tank deck side sealing apparatus of LNG cryogenic tank the most according to claim 1, it is characterised in that
It is additionally provided with aluminium foil glass cloth between the bottom of described second annular preform and the outer top tank structure of described concrete.
The tank deck side sealing apparatus of LNG cryogenic tank the most according to claim 1, it is characterised in that
Described first annular press strip, the second annular press strip and vertical press strip are respectively adopted band steel and make.
The tank deck side sealing apparatus of LNG cryogenic tank the most according to claim 1, it is characterised in that
Described vertical press strip is bending, by the top tank structure side expansion outside concrete of described tank deck.
The tank deck side sealing apparatus of LNG cryogenic tank the most according to claim 1, it is characterised in that
Some described vertical press strips along described first annular press strip and second annular press strip spaced set, described vertically
The two ends up and down of press strip respectively and are welded and fixed between described first annular press strip and the second annular press strip.
The tank deck side sealing apparatus of LNG cryogenic tank the most according to claim 1, it is characterised in that
Described metal seal is closely overlapped along the circumferencial direction of described cage type skeleton by some galvanized iron sheets and forms.
The tank deck side sealing apparatus of LNG cryogenic tank the most according to claim 6, it is characterised in that
Lap width between adjacent two described galvanized iron sheets is 55～80mm.
The tank deck side sealing apparatus of LNG cryogenic tank the most according to claim 1, it is characterised in that
Described first annular press strip is bolted to connection with the marginal texture of described tank deck.
The tank deck side sealing apparatus of LNG cryogenic tank the most according to claim 8, it is characterised in that
Sealing silica gel also it is coated with between described first annular press strip and the marginal texture of described tank deck.
The tank deck side sealing apparatus of LNG cryogenic tank the most according to claim 1, its feature exists
In, the radius of a circle of the external diameter top tank structure outer with described concrete of described second annular press strip is suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610331190.4A CN105889508A (en) | 2016-05-18 | 2016-05-18 | Tank top edge sealing device of LNG low-temperature tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610331190.4A CN105889508A (en) | 2016-05-18 | 2016-05-18 | Tank top edge sealing device of LNG low-temperature tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105889508A true CN105889508A (en) | 2016-08-24 |
Family
ID=56717331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610331190.4A Pending CN105889508A (en) | 2016-05-18 | 2016-05-18 | Tank top edge sealing device of LNG low-temperature tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105889508A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507504A (en) * | 1994-01-27 | 1996-04-16 | Forsheda Ab | Sealing device with c-shaped lips and central projection |
| CN201302043Y (en) * | 2008-11-18 | 2009-09-02 | 上海市安装工程有限公司 | Steel vault sealing device for large-scale liquefied natural gas storage tanks |
| CN201680149U (en) * | 2010-05-14 | 2010-12-22 | 中国石油天然气第六建设公司 | Air-rising sealing device for storage tank roof |
| CN203669455U (en) * | 2013-11-29 | 2014-06-25 | 中国海洋石油总公司 | Large liquefied natural gas storage tank vault gas-lifting sealing structure |
| CN103899756A (en) * | 2014-04-25 | 2014-07-02 | 中石化第十建设有限公司 | Sealing equipment and construction technology in LNG full containment tank vault air-blowing jacking process |
| CN205780841U (en) * | 2016-05-18 | 2016-12-07 | 上海市安装工程集团有限公司 | A kind of tank deck side sealing apparatus of LNG cryogenic tank |
-
2016
- 2016-05-18 CN CN201610331190.4A patent/CN105889508A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507504A (en) * | 1994-01-27 | 1996-04-16 | Forsheda Ab | Sealing device with c-shaped lips and central projection |
| CN201302043Y (en) * | 2008-11-18 | 2009-09-02 | 上海市安装工程有限公司 | Steel vault sealing device for large-scale liquefied natural gas storage tanks |
| CN201680149U (en) * | 2010-05-14 | 2010-12-22 | 中国石油天然气第六建设公司 | Air-rising sealing device for storage tank roof |
| CN203669455U (en) * | 2013-11-29 | 2014-06-25 | 中国海洋石油总公司 | Large liquefied natural gas storage tank vault gas-lifting sealing structure |
| CN103899756A (en) * | 2014-04-25 | 2014-07-02 | 中石化第十建设有限公司 | Sealing equipment and construction technology in LNG full containment tank vault air-blowing jacking process |
| CN205780841U (en) * | 2016-05-18 | 2016-12-07 | 上海市安装工程集团有限公司 | A kind of tank deck side sealing apparatus of LNG cryogenic tank |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |
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| RJ01 | Rejection of invention patent application after publication |