CN106894642A - Reduce the structure and method of the table temperature difference in the low-temperature liquid gas storage tank shell construction time - Google Patents
Reduce the structure and method of the table temperature difference in the low-temperature liquid gas storage tank shell construction time Download PDFInfo
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- CN106894642A CN106894642A CN201710128867.9A CN201710128867A CN106894642A CN 106894642 A CN106894642 A CN 106894642A CN 201710128867 A CN201710128867 A CN 201710128867A CN 106894642 A CN106894642 A CN 106894642A
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- storage tank
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention provides a kind of structure and method for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, the prestressing force bellows that the useful heat-conducting of tank skin pre-plugged in casting process is made, the two ends of the prestressing force bellows are exposed independent from tank skin, and wherein one end is communicated to air-supply arrangement.When the concrete of the tank skin is due to hydration generation heat, air-cooled gas is sent into by prestressing force bellows by the air-supply arrangement, it is then exhausted from outside tank skin after being converted into hot blast after the heat of air-cooled gas absorption tank pars intramuralis, can avoid the occurrence of tank skin causes the situation of cracking because internal-external temperature difference is excessive.
Description
Technical field
The present invention relates to a kind of structure and method for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time.
Background technology
Low-temperature liquefaction gas storage tank includes prestressed concrete outer tank, the inner canister of storing liquid liquefied gas and is arranged on outer tank
Cold insulation interlayer between inner canister.
In the building course of the prestressed concrete outer tank of low-temperature liquefaction gas storage tank, the tank skin (17) of outer tank is in concrete
Because hydration can produce substantial amounts of heat after pouring, due to thickness, the height of low-temperature liquefaction gas storage tank outer tank tank skin (17)
And diameter is larger, external cooling speed is fast, internal heat dissipating is slow so that inside concrete gathers substantial amounts of heat, causes inner table
The temperature difference is larger, makes concrete structure generation temperature deformation, and its deformation is subject to inside and outside constraint, so as to produce heat higher to answer
Power.With being continuously increased for concrete effective rigidity, thermal stress can exceed that the tensile strength of same period concrete, cause concrete
Cracking, forms the initial fracture of concrete.The generation in crack, can raise low-temperature liquid gas rate of gasification in tank, influence cold insulation effect；
And low-temperature liquefaction gas storage tank is generally located at coastal area, chloride ion content is higher in air, and excessive crack can make tank skin (17)
Interior reinforcing bar is subjected to chloride ion corrosion, reduces structural life-time.
In terms of design and construction, although having employed various designs and working measure in the prior art (such as using low water
Change Hot Cement, reduce water-cement ratio, using 60 days design strengths, postpone striking time, water seasoning, addition additive etc.) reduce
The table temperature difference in concrete, but effect is not also it is obvious that under low-temperature liquefaction gas storage tank concrete outer tank bottom and tank skin (17)
Portion easily produces larger crack.
Above-mentioned situation shows that prior art can not well reduce low-temperature liquefaction gas storage tank prestressed concrete outer tank tank skin
The table temperature difference in construction time, it would be highly desirable to which those skilled in the art are studied and propose new solution.
The content of the invention
Therefore, it is an object of the present invention to provide a kind of reduce the table temperature difference in the low-temperature liquid gas storage tank shell construction time
Structure and method, cracking is caused to solve table excessive temperature differentials in the low-temperature liquefaction gas storage tank prestressed concrete outer tank tank skin construction time
Problem.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, it is characterised in that：The tank skin exists
The prestressing force bellows that the useful heat-conducting of pre-plugged is made in casting process, the two ends of the prestressing force bellows are exposed independent from
Tank skin, wherein one end are communicated to air-supply arrangement.
The described structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, wherein：The air-supply arrangement is
Air blower, the port of export of the air blower is by being communicated to the air intake vent of plenum chamber, the plenum chamber after total blast volume regulating valve
Multiple air outlets be respectively connected with the one end for being connected flexible pipe, it is described connection flexible pipe the other end and the prestressing force
The air inlet end of bellows is connected, and the outlet side of each prestressing force bellows is provided with turbine flowmeter and automatic air quantity
Regulating valve.
The described structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, wherein：The automatic air quantity is adjusted
Section valve is Electronic control or pneumatic control.
The described structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, wherein：The plenum chamber also leads to
Cross citation damper and be connected with U-tube manometer.
The described structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, wherein：On the plenum chamber also
The first temperature transmitter is provided with, the outlet side of each prestressing force bellows is additionally provided with second temperature transmitter.
The described structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, wherein：The air blower, total wind
Adjustable valve, the first temperature transmitter, second temperature transmitter, automatic volume damper are electrically connected with a PLC device.
The described structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, wherein：The prestressing force ripple
Pipe includes horizontal and vertical prestressing force bellows, and the longitudinal prestressing bellows is the U-shaped arrangement in two openings upward,
Or arranged in the longitudinal linear being open respectively up and down.
A kind of method for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, it uses foregoing reduction low-temperature liquefaction
The structure of the table temperature difference in the gas storage tank tank skin construction time, it is characterised in that：The tank skin concrete due to hydration produce
When heat, air-cooled gas is sent into by prestressing force bellows by the air-supply arrangement, air-cooled gas absorption tank pars intramuralis
It is then exhausted from outside tank skin after heat, it is to avoid tank skin occur causes the situation of cracking because internal-external temperature difference is excessive.
The described method for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, wherein：The air-supply arrangement is
Air blower, the port of export of the air blower is by being communicated to the air intake vent of plenum chamber, the plenum chamber after total blast volume regulating valve
Multiple air outlets be respectively connected with the one end for being connected flexible pipe, it is described connection flexible pipe the other end and the prestressing force
The air inlet end of bellows is connected, and the outlet side of each prestressing force bellows is provided with turbine flowmeter and automatic air quantity
Regulating valve；
The first temperature transmitter is additionally provided with the plenum chamber, the outlet side of each prestressing force bellows is additionally provided with
Second temperature transmitter.
The described method for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, wherein：The air blower, total wind
Adjustable valve, the first temperature transmitter, second temperature transmitter, automatic volume damper are electrically connected with a PLC device；Institute
Stating PLC device can automatically control the wind-producing amount and each air quantity of prestressing force bellows of air blower, so as to adjust each
The temperature of the outlet side of root prestressing force radiation fins.
Compared with prior art, the invention has the advantages that：
1. the present invention carries out the ventilation of different wind speed using air blower in tank skin concreting and maintenance processes, with
Reach the effect for reducing concrete internal temperature.Not only can effectively reduce low-temperature liquefaction gas storage tank prestressed concrete outer tank tank skin
The table temperature difference in construction time, and merely with original prestressing force bellows as ventilation shaft, with practicality and warp very high
Ji property.
2nd, the present invention is the inherent structure feature based on low-temperature liquefaction gas storage tank prestressed concrete outer tank tank skin, in construction
And the internal temperature of concrete tank skin is reduced in maintenance processes using air-cooled technology, so that the table temperature difference in reducing, improves coagulation
Native tank wall construction quality.Air-cooled technology has preferably applicable for low-temperature liquefaction gas storage tank prestressed concrete outer tank tank skin
Property, and regulation by air-cooled speed can reach optimal cooling-down effect, it is that a kind of controllability is good, strong applicability technology
Method.
Brief description of the drawings
Fig. 1 is the structural representation one for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time that the present invention is provided
(the first arrangement)；
Fig. 2 is the structural representation two for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time that the present invention is provided
(second arrangement).
Description of reference numerals：Air blower 1；Total blast volume regulating valve 2；Airduct 3；Support of duct 4；Plenum chamber 5；Citation damper 6；Hand
Dynamic ball valve 7；Adapter 8；Connection flexible pipe 9；First temperature transmitter 10a；Second temperature transmitter 10b；Automatic volume damper 11；
Connection short tube 12；Turbine flowmeter 13；Connection short tube 14；U-tube manometer 15；Prestressing force bellows 16；Tank skin 17；Buttress
18；Positive construction casting band 19；Complete to pour band 20；Ground 21.
Specific embodiment
As shown in figure 1, the present invention provides a kind of structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, institute
State the prestressing force bellows 16 that the useful heat-conducting of the pre-plugged in casting process of tank skin 17 is made, the prestressing force bellows
16 preferably with galvanized steel strip as material, and its one end is communicated to cfentrifugal blower 1, tank skin 17 concrete due to hydration
When producing amount of heat, start the air blower 1 by air-cooled gas feeding prestressing force bellows 16, air-cooled gas absorption tank
It is then exhausted from outside tank skin 17 after hot blast is converted into after heat inside wall 17, so that constantly that the heat inside tank skin 17 is rapid
Export to outside, can avoid the occurrence of tank skin 17 cause because internal-external temperature difference is excessive cracking situation.
Specifically, the port of export of the air blower 1 is communicated to the inlet air of plenum chamber 5 by total blast volume regulating valve 2 afterwards
Mouthful, each manually ball valve of multiple air outlets of the plenum chamber 5 is connected with the one end for being connected flexible pipe 9, the connection
The other end of flexible pipe 9 is connected with the air inlet end of a prestressing force bellows 16, each prestressing force bellows 16
Outlet side be provided with turbine flowmeter 13 and automatic volume damper 11.By the total blast volume regulating valve 2, can adjust into
Enter the total blast volume in plenum chamber 5；By turbine flowmeter 13 each described, the wind in corresponding prestressing force bellows 16 can be learnt
Amount；By automatic volume damper 11 each described, the air quantity passed through in corresponding prestressing force bellows 16 can be adjusted.It is described from
Dynamic volume damper 11 is Electronic control or pneumatic control.
Additionally, the plenum chamber 5 is also connected with U-tube manometer 15 by citation damper 6, for measuring the plenum chamber in real time
Gas pressure in 5.The first temperature transmitter 10a is additionally provided with the plenum chamber 5, for measuring the gas in the plenum chamber 5
Temperature.The outlet side of each prestressing force bellows 16 is additionally provided with second temperature transmitter 10b, for measure it is described go out
The temperature at gas end.
And, the air blower 1, total blast volume regulating valve 2, the first temperature transmitter 10a, second temperature transmitter 10b, from
Dynamic volume damper 11 is electrically connected with a PLC device (being unillustrated), enables the invention to automatically control the product of air blower 1
Air quantity and each air quantity of prestressing force bellows 16, so as to adjust each temperature of the outlet side of prestressing force radiation fins.
And the prestressing force bellows 16 is arranged in tank skin 17, horizontal and vertical prestressing force bellows is generally comprised, its
In, the longitudinal prestressing bellows, U-shaped arrangement that can be as shown in Figure 1 in two openings upward (is primarily adapted for use in landing storage
Tank), actually can also be in that the longitudinal linear arrangement being open respectively up and down (is primarily adapted for use in the built on stilts storage tank of cushion cap high, such as Fig. 2
It is shown).
It is described above to be merely exemplary for the purpose of the present invention, and it is nonrestrictive, and those of ordinary skill in the art understand,
In the case where spirit and scope defined herein are not departed from, can many modifications may be made, change or equivalent, but fall within
Within protection scope of the present invention.
Claims (10)
1. it is a kind of reduce the low-temperature liquid gas storage tank shell construction time in the table temperature difference structure, it is characterised in that：The tank skin (17)
The prestressing force bellows (16) that the useful heat-conducting of pre-plugged is made in casting process, the prestressing force bellows (16)
Two ends are exposed independent from tank skin (17), and wherein one end is communicated to air-supply arrangement.
2. the structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time according to claim 1, its feature exists
In：The air-supply arrangement is air blower (1), and the port of export of the air blower (1) after total blast volume regulating valve (2) by being communicated to
The air intake vent of plenum chamber (5), one end that multiple air outlets of the plenum chamber (5) are respectively connected flexible pipe (9) with is connected, institute
State connection flexible pipe (9) the other end be connected with the air inlet end of a prestressing force bellows (16), each it is described it is pre- answer
The outlet side of power bellows (16) is provided with turbine flowmeter (13) and automatic volume damper (11).
3. the structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time according to claim 2, its feature exists
In：The automatic volume damper (11) is Electronic control or pneumatic control.
4. the structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time according to claim 2, its feature exists
In：The plenum chamber (5) is also connected with U-tube manometer (15) by citation damper (6).
5. the structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time according to claim 2, its feature exists
In：The first temperature transmitter (10a), each outlet of the prestressing force bellows (16) are additionally provided with the plenum chamber (5)
End is additionally provided with second temperature transmitter (10b).
6. the structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time according to claim 5, its feature exists
In：It is the air blower (1), total blast volume regulating valve (2), the first temperature transmitter (10a), second temperature transmitter (10b), automatic
Volume damper (11) is electrically connected with a PLC device.
7. the structure for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time according to claim 2, its feature exists
In：The prestressing force bellows (16) includes horizontal and vertical prestressing force bellows, and the longitudinal prestressing bellows is in two
Individual opening U-shaped arrangement upward, or arranged in the longitudinal linear being open respectively up and down.
8. a kind of method for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time, it uses as claimed in claim 1
Reduce the structure of the table temperature difference in the low-temperature liquid gas storage tank shell construction time, it is characterised in that：In the concrete of the tank skin (17)
When producing heat due to hydration, air-cooled gas is sent into by prestressing force bellows (16), wind by the air-supply arrangement
Cold air is then exhausted from tank skin (17) outside after absorbing the internal heat of tank skin (17), it is to avoid tank skin (17) occur due to inside and outside temperature
Difference is excessive to cause the situation of cracking.
9. the method for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time according to claim 8, its feature exists
In：The air-supply arrangement is air blower (1), and the port of export of the air blower (1) after total blast volume regulating valve (2) by being communicated to
The air intake vent of plenum chamber (5), one end that multiple air outlets of the plenum chamber (5) are respectively connected flexible pipe (9) with is connected, institute
State connection flexible pipe (9) the other end be connected with the air inlet end of a prestressing force bellows (16), each it is described it is pre- answer
The outlet side of power bellows (16) is provided with turbine flowmeter (13) and automatic volume damper (11)；
The first temperature transmitter (10a), each outlet of the prestressing force bellows (16) are additionally provided with the plenum chamber (5)
End is additionally provided with second temperature transmitter (10b).
10. the method for reducing the table temperature difference in the low-temperature liquid gas storage tank shell construction time according to claim 9, its feature exists
In：It is the air blower (1), total blast volume regulating valve (2), the first temperature transmitter (10a), second temperature transmitter (10b), automatic
Volume damper (11) is electrically connected with a PLC device；The PLC device can automatically control the wind-producing amount of air blower (1)
And each air quantity of prestressing force bellows (16), so as to adjust each temperature of the outlet side of prestressing force radiation fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710128867.9A CN106894642A (en) | 2017-03-06 | 2017-03-06 | Reduce the structure and method of the table temperature difference in the low-temperature liquid gas storage tank shell construction time |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710128867.9A CN106894642A (en) | 2017-03-06 | 2017-03-06 | Reduce the structure and method of the table temperature difference in the low-temperature liquid gas storage tank shell construction time |
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| CN106894642A true CN106894642A (en) | 2017-06-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109895234A (en) * | 2019-04-03 | 2019-06-18 | 中海石油气电集团有限责任公司 | A kind of LNG tank Concrete Temperature Control system and its temperature control method |
| CN111007898A (en) * | 2019-12-12 | 2020-04-14 | 浙江鸿翔建设集团股份有限公司 | Temperature detection control system for large-volume concrete pouring |
| CN115405119A (en) * | 2022-09-20 | 2022-11-29 | 中国石油化工集团有限公司 | Construction process for heating and insulating concrete on outer tank wall of full-capacity low-temperature storage tank in winter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109895234A (en) * | 2019-04-03 | 2019-06-18 | 中海石油气电集团有限责任公司 | A kind of LNG tank Concrete Temperature Control system and its temperature control method |
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| CN115405119A (en) * | 2022-09-20 | 2022-11-29 | 中国石油化工集团有限公司 | Construction process for heating and insulating concrete on outer tank wall of full-capacity low-temperature storage tank in winter |
| CN115405119B (en) * | 2022-09-20 | 2024-05-03 | 中国石油化工集团有限公司 | Construction technology for heating and external heat preservation of concrete of external tank wall of full-capacity low-temperature storage tank in winter |
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Application publication date: 20170627 |
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| RJ01 | Rejection of invention patent application after publication |