CN105952228A - Construction method for double layer storage tank with flat suspended roof as inner tank roof - Google Patents

Construction method for double layer storage tank with flat suspended roof as inner tank roof Download PDF

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Publication number
CN105952228A
CN105952228A CN201610268913.0A CN201610268913A CN105952228A CN 105952228 A CN105952228 A CN 105952228A CN 201610268913 A CN201610268913 A CN 201610268913A CN 105952228 A CN105952228 A CN 105952228A
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tank
construction
furred ceiling
canister
interior
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CN201610268913.0A
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CN105952228B (en
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王泳文
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China National Chemical Engineering Third Construction Co Ltd
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China National Chemical Engineering Third Construction Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02Containers for fluids or gases; Supports therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02Containers for fluids or gases; Supports therefor
    • E04H7/04Containers for fluids or gases; Supports therefor mainly of metal

Abstract

The invention discloses a construction method for a double layer storage tank with a flat suspended ceiling as an inner tank roof. The method comprises following steps: installation of an inner tank top ring wallboard, a flat suspended ceiling and an outer tank dome; simultaneously upside down lifting of the inner tank flat suspended ceiling, inner tank top ring wallboard and the outer tank dome; after the installation of the inner tank wallboard is finished, the outer tank wallboard is inversely mounted in order; after the construction of a thermal insulation layer between the inner tank base plate and the outer tank base plate is finished, an inner tank base plate is paved. By means of the construction method, the construction efficiency is effectively increased, the construction period is shortened, the difficulty for dumping and transferring the material in the inner tank is reduced, and construction cost is reduced.

Description

A kind of interior tank deck is the double-layer storage tank construction method of flat furred ceiling
Technical field
The present invention relates to the mounting technique of a kind of double-layer storage tank, be flat furred ceiling particularly to tank deck in one Double-layer storage tank construction method.
Background technology
Double-layer storage tank is widely used in the cryogenic liquids such as liquid oxygen, liquid nitrogen, liquefied petroleum gas and ethylene Store.It is flat ceiling structure that large-scale low-temperature double-layer storage tank is typically designed structure, and its outer tank is vault construction, Tank is flat-tope structure, and tank flat-top suspension rod is hung on outer tank vault;Its construction technical requirement is high, Difficulty of construction is big.
In existing construction technology, frequently with tradition storage tank inversion technology, the most first inverted construction outer tank, The method of inverted construction tank is constructed one by one again, finally the construction flat furred ceiling of tank, and its difficulty of construction is big, Efficiency of construction is low, long construction period, relatively big on project progress impact, meanwhile, tank material have bad luck into Tank there is also the biggest difficulty.
Summary of the invention
The technical problem to be solved is to provide the double-layer storage tank that a kind of interior tank deck is flat furred ceiling Construction method, this construction method can be effectively improved efficiency of construction, shorten construction period, reduce tank The difficulty that material is had bad luck, reduces construction cost.
For achieving the above object, the present invention provides following technical scheme: in a kind of, tank deck is flat furred ceiling Double-layer storage tank construction method, including the construction of inside and outside tank bottom, the flat furred ceiling of inner canister, outer tank vault The construction of plate and the construction of inside and outside tank shell, comprise the following steps:
1), blanking, prefabricated inside and outside tank bottom, inside and outside tank shell, the flat furred ceiling of inner canister, outer tank encircle Top board and parts;
2), outer tank bottom is assembled;
3), after outer tank bottom assembled, outside by prefabricated for flat for tank furred ceiling on tank bottom, then will outward Tank shell is positioned at 1~2 bands at collar position and installs, and installs resistance to compression on mounted outer tank shell Circle;
4), on the flat furred ceiling of inner canister, three circle scaffolds, hoop beam when installing are set up as outer tank dome plate Bearing support, three circle scaffolds all concentric, and diameter is different;
5), fliping lifting mast is installed at interlayer between interior outer tank, promotes mast equal along inner canister outer ring Even distribution, and the inner ring installation one circle packing of the outer tank shell at 1~2 bands being complete installation, Packing uses channel-section steel, is connected by being welded and fixed, every between adjacent two packings of same circle Joint adds three pieces of bosses;Add between mast and outer tank bottom in each fliping lifting mast frock One piece of backing plate is welded and fixed, and mast top arranges hoop and radial direction pull bar, and hoop pull bar is by adjacent mast Bar upper end is connected, and radially mast upper end is connected by pull bar with tank Outer Bottom Plating, radially pull bar and ground Angle is less than 60 °;
6), the pressure-resistent ring of tank shell and the scaffold of the flat furred ceiling of inner canister, for supporting, install outer tank arch in addition Reinforcing steel construction on top board, makes outer tank dome plate and be complete installation 1~the outer tank shell of 2 bands Install fixing;
7), utilize fliping lifting mast frock to promote packing to drive outer tank dome plate to promote, regulate outer tank Distance between dome plate and the flat furred ceiling of inner canister, regulates and uses falsework by flat for inner canister furred ceiling afterwards Connect with outer tank dome plate and fix;
8), utilize fliping lifting mast frock fliping lifting successively, assembling inner canister each band wallboard, carrying When rising inner canister each band wallboard, the flat furred ceiling of inner canister and interior tank shell, outer tank dome plate can carry out upside-down mounting simultaneously Promote;Before inner canister each band wallboard is installed, packing is set in the outer ring of a corresponding band wallboard;
9), recycling fliping lifting mast frock fliping lifting successively, assembling outer tank each band wallboard; Before installing outer tank each band wallboard, the inner ring at a corresponding band wallboard arranges packing;
10), after interior tank shell installation, outer tank is again regulated by fliping lifting mast frock Distance between dome plate and the flat furred ceiling of inner canister, changes pull bar I into by falsework after regulating, logical Crossing pull bar I makes the flat furred ceiling of inner canister and the connection of outer tank dome plate fix, each fliping lifting mast frock The pull bar II being connected with interior tank shell is installed on top, and pull bar II other end arranges support pulley;
11), after outer tank is all constructed, inside and outside can body entirety is promoted, carry out interior tank bottoms The Cold-keeping Layer construction of plate bottom, then carries out the assembling of interior tank bottom;
12), entirety fall inside and outside can body, improve inside and outside tank shell and inside and outside tank bottom Angle welding;
13), fliping lifting mast frock is removed;
14), each mouth of pipe, manhole and other parts are installed;
15), inspect for acceptance.
Preferably, before inside and outside tank bottom assembles, should on the basis of mark cross centre line, and press The requirement chalk line of material cutting plan marks the position line at place, every piece of plate long limit, assemble bed board should from centre to Both sides launch to carry out.
Preferably, fliping lifting frock uses electric block.
Preferably, before interior tank shell is installed, interior tank bottom, tank inner connecting tube, adnexa are had bad luck to tank Stack neat at interior one, when tank bottoms Cold-keeping Layer is constructed, adjusting stowed location accordingly.
Preferably, before inside and outside tank shell is installed, datum mark is set in respective wallboard installation site, Built-up foundation as respective wallboard.
Preferably, before outer tank dome plate assembles, on dome plate, first angularly pull the sideline of each plate, The margin of error of dome plate amount of lap is less than 5mm;Outer tank dome plate offers hole at lifting mast, treats tank Body whole height rise to more than during mast top height again by bored closure.
Preferably, after using falsework flat for inner canister furred ceiling and outer tank dome plate to be connected, outward The inner side of tank dome plate arranges a circle baffle plate, and the diameter of baffle plate place circumference is consistent with the internal diameter of inner canister.
Use technique scheme, relative to conventional construction method, improve construction operation environment, add The big prefabricated degree of depth of tank body, improves efficiency of construction, shortens construction period, decrease work high above the ground, fall Low potential safety hazard, improves safety coefficient, reduces construction tool secondary installing projects amount, keeps away Exempt from the pollution to stainless cylinder of steel, the effective finished product protection quality improved, reduces construction cost. And outer tank tank deck can conveniently be taked anti-deformation measure, improve tank deck Forming Quality.
Accompanying drawing explanation
Fig. 1 is to lift schematic diagram between flat furred ceiling and outer tank dome plate in the present invention temporarily;
Fig. 2 is tank shell construction hoisting schematic diagram in the present invention;
Fig. 3 is the outer tank shell construction hoisting schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, by the description to embodiment, the present invention will be further described:
As shown in Figure 1, 2, 3, a kind of interior tank deck of the present invention is the double-layer storage tank construction method of flat furred ceiling, Including the construction of inside and outside tank bottom, the flat furred ceiling of inner canister, the construction of outer tank dome plate 3,4 and interior, The construction of outer tank shell 5,6, comprises the following steps:
1), blanking, prefabricated inside and outside tank bottom, inside and outside tank shell 5,6, the flat furred ceiling of inner canister 3, Outer tank dome plate 4 and parts.
2), outer tank bottom is assembled.
3), after outer tank bottom assembled, outside by prefabricated for flat for tank furred ceiling 3 on tank bottom, then will Outer tank shell 6 is positioned at 1~2 bands at collar position and installs, and pacifies on mounted outer tank shell 6 Dress pressure-resistent ring.
4), on the flat furred ceiling of inner canister 3, three circle scaffolds, ring when installing are set up as outer tank dome plate 4 To the bearing support of beam, three enclose all concentric of scaffolds, and diameter is different.
5), installing fliping lifting mast 7 between interior outer tank at interlayer, fliping lifting mast 7 uses Jack connects electric block 2.Promote mast 7 to be uniformly distributed along inner canister outer ring, and be complete The inner ring of the outer tank shell 4 of 1~2 bands of installation installs a circle packing, and packing uses channel-section steel, is positioned at same Being connected by being welded and fixed between adjacent two packings of one circle, every joint adds three pieces of bosses, Prevent joint cracking or deformation.Between mast 7 and outer tank bottom in each fliping lifting mast frock Add one piece of backing plate to be welded and fixed, increase the contact area between mast 7 and outer tank bottom, reduce externally The pressure of tank bottom 2, mast 7 top arranges hoop and radial direction pull bar 8,9, and hoop pull bar 8 will Adjacent mast upper end is connected, and radially mast upper end is connected by pull bar 9 with outer tank bottom, radially draws Bar 9 and ground angle are less than 60 °.Mast 7 is provided with motor-driven chain hoist, and motor-driven chain hoist hangs over mast 7 Hanger on, the hanging of motor-driven chain hoist is hooked on the suspension ring of packing, connect tight after keep at motor-driven chain hoist In vertical state, motor-driven chain hoist switch board is positioned over base plate centre, and motor-driven chain hoist power line is along ring Lay to pull bar, be connected with switch board.
6), the pressure-resistent ring of tank shell 6 and the scaffold of the flat furred ceiling of inner canister 3 are to support, outside installation in addition Reinforcing steel construction on tank dome plate 4, make outer tank dome plate 4 be complete installation 1~2 band Outer tank shell 4 is installed fixing, to increase the rigidity of outer tank dome plate 4.
7), utilizing fliping lifting mast frock to promote packing drives outer tank dome plate 4 to promote, outside regulation Distance between tank dome plate 4 and the flat furred ceiling of inner canister 3, regulates and uses falsework by inner canister afterwards Flat furred ceiling 3 and outer tank dome plate 4 connection fix.Using falsework by flat for inner canister furred ceiling 3 He After outer tank dome plate 4 connects, the inner side of outer tank dome plate 4 arranges a circle baffle plate, baffle plate place The diameter of circumference is consistent with the internal diameter of inner canister, prevents sliding between outer tank dome plate 4 and inner canister;In outer tank Before dome plate 4 assembles, on dome plate, first angularly pull the sideline of each plate, dome plate amount of lap The margin of error is less than 5mm;Outer tank dome plate 4 offers hole at lifting mast 7, treats tank body whole height Rise to more than during mast 7 overhead height again by bored closure.
8), utilize fliping lifting mast frock fliping lifting successively, assembling inner canister each band wallboard, carrying When rising inner canister each band wallboard, the flat furred ceiling of inner canister 3 and interior tank shell 5, outer tank dome plate 4 can enter simultaneously Row fliping lifting;Before inner canister each band wallboard is installed, packing is set in the outer ring of a corresponding band wallboard.
9), recycling fliping lifting mast frock fliping lifting successively, assembling outer tank each band wallboard; Before installing outer tank each band wallboard, the inner ring at a corresponding band wallboard arranges packing.
10), after the installation of interior tank shell 5, outside again being regulated by fliping lifting mast frock Distance between tank dome plate 4 and the flat furred ceiling of inner canister 3, changes falsework into pull bar after regulating I, make the flat furred ceiling of inner canister 3 and outer tank dome plate 2 connect by pull bar I and fix, then by each The radial direction pull bar 9 of fliping lifting mast changes the pull bar II 1 that one end is connected with interior tank shell 5 into, is used for Fixed mast 7, pull bar II 1 other end arranges support pulley, is used for reducing outer tank and promotes resistance, carries High improving stability.
11), after outer tank is all constructed, inside and outside can body entirety is promoted, carry out interior tank bottoms The Cold-keeping Layer construction of plate bottom, then carries out the assembling of interior tank bottom.
12), entirety fall inside and outside can body, improve inside and outside tank shell 5,6 tank bottoms with inside and outside The angle welding of plate.
13), fliping lifting mast frock is removed.
14), each mouth of pipe, manhole and other parts are installed.
15), inspect for acceptance.
The present invention before inside and outside tank bottom assembles, should on the basis of mark cross centre line, and by row The requirement chalk line of plate figure marks the position line at place, every piece of plate long limit, and assembling bed board should be from centre to two Side launches to carry out.After avoiding tank body to close, difficulty had bad luck by inner canister prefabricated component, needs first to be promoted by tank deck, Before wallboard is formally installed, interior tank bottom, tank inner connecting tube, adnexa are had bad luck to tank stack at one whole Together, when tank bottoms Cold-keeping Layer is constructed, stowed location is being adjusted accordingly.Inside and outside tank shell 5,6 is being installed Before, datum mark is set in respective wallboard installation site, as the built-up foundation of respective wallboard.
The present invention, relative to conventional construction method, improves construction operation environment, increases tank body prefabricated The degree of depth, improves efficiency of construction, shortens construction period, decrease work high above the ground, reduce potential safety hazard, Improve safety coefficient, reduce construction tool secondary installing projects amount, it is to avoid to rustless steel The pollution of tank, the effective finished product protection quality improved, reduces construction cost.And can to outer tank tank deck Conveniently take anti-deformation measure, improve tank deck Forming Quality.
Above-described is only the preferred embodiment of the present invention, it is noted that general for this area For logical technical staff, without departing from the concept of the premise of the invention, it is also possible to make some changes Shape and improvement, these broadly fall into protection scope of the present invention.

Claims (7)

1. in, tank deck is a double-layer storage tank construction method for flat furred ceiling, including inside and outside tank bottom construction, The flat furred ceiling of inner canister, the construction of outer tank dome plate (3,4) and the construction of inside and outside tank shell (5,6), It is characterized in that, comprise the following steps:
1), blanking, prefabricated inside and outside tank bottom, inside and outside tank shell (5,6), the flat furred ceiling of inner canister (3), Outer tank dome plate (4) and parts;
2), outer tank bottom (2) is assembled;
3), after outer tank bottom assembled, outside by prefabricated for flat for tank furred ceiling (3) on tank bottom, then will Outer tank shell (6) is positioned at 1~2 bands at collar position and installs, and on mounted outer tank shell (6) Pressure-resistent ring is installed;
4), in the flat furred ceiling of inner canister (3), three circle scaffolds are set up, when installing as outer tank dome plate (4) The bearing support of hoop beam, three enclose all concentric of scaffolds, and diameter is different;
5), fliping lifting mast (7) is installed at interlayer between interior outer tank, promotes mast (7) along inner canister Outer ring is uniformly distributed, and the inner ring installation one of the outer tank shell (4) at 1~2 bands being complete installation Circle packing, packing uses channel-section steel, is connected by being welded and fixed between adjacent two packings of same circle, Every joint adds three pieces of bosses;Mast (7) in each fliping lifting mast frock and outer tank bottom (2) adding one piece of backing plate between to be welded and fixed, mast (7) top arranges hoop and radial direction pull bar (8,9), Adjacent mast upper end is connected by hoop pull bar (8), and radially pull bar (9) is by mast upper end and outer tank bottom (2) being connected, radially pull bar and ground angle are less than 60 °;
6), the pressure-resistent ring of tank shell (6) and the scaffold of the flat furred ceiling of inner canister (3), for supporting, are installed in addition Reinforcing steel construction on outer tank dome plate (4), makes outer tank dome plate (4) and be complete installation 1~2 The outer tank shell (4) of band is installed fixing;
7), utilizing fliping lifting mast frock to promote packing drives outer tank dome plate (4) to promote, outside regulation Distance between tank dome plate (4) and the flat furred ceiling of inner canister (3), regulates and uses falsework by interior afterwards The flat furred ceiling of tank (3) and outer tank dome plate (4) connection fix, and inside and outside tank deck forms entirety so that interior The flat furred ceiling of tank (3) and interior tank shell (5), outer tank dome plate (4) can carry out fliping lifting simultaneously;
8), utilize fliping lifting mast frock fliping lifting successively, assemble inner canister each band wallboard, in promoting During tank each band wallboard, the flat furred ceiling of inner canister (3) and interior tank shell (5), outer tank dome plate (4) can enter simultaneously Row fliping lifting;Before inner canister each band wallboard is installed, packing is set in the outer ring of a corresponding band wallboard;
9), recycling fliping lifting mast frock fliping lifting successively, assembling outer tank each band wallboard;In peace Before dress outer tank each band wallboard, the inner ring at a corresponding band wallboard arranges packing;
10), after interior tank shell (5) installation, outer tank is again regulated by fliping lifting mast frock Distance between dome plate (4) and the flat furred ceiling of inner canister (3), changes falsework into pull bar after regulating I, make the flat furred ceiling of inner canister (3) and outer tank dome plate (4) connect by pull bar I and fix, then will be every The radial direction pull bar (9) of individual fliping lifting mast frock changes the pull bar II that one end is connected with interior tank shell (5) into (1), pull bar II (1) other end arranges support pulley, the length of pull bar II (1) and inside and outside tank shell Gap between (5,6) adapts;
11), after outer tank is all constructed, inside and outside can body entirety is promoted, carry out under interior tank bottom Portion's Cold-keeping Layer construction, then carries out the assembling of interior tank bottom;
12), entirety fall inside and outside can body, improve inside and outside tank shell (5,6) tank bottoms with inside and outside The angle welding of plate (1,2);
13), fliping lifting mast frock is removed;
14), each mouth of pipe, manhole and other parts are installed;
15), inspect for acceptance.
Interior tank deck the most according to claim 1 is the double-layer storage tank construction method of flat furred ceiling, and its feature exists In, before inside and outside tank bottom assembles, should on the basis of mark cross centre line, and by the requirement of material cutting plan Mark the position line at place, every piece of plate long limit with chalk line, assembling bed board should launch to both sides from centre to carry out.
Interior tank deck the most according to claim 1 is the double-layer storage tank construction method of flat furred ceiling, and its feature exists In, described fliping lifting frock uses electric block (2).
Interior tank deck the most according to claim 3 is the double-layer storage tank construction method of flat furred ceiling, and its feature exists In, before interior tank shell (5) is installed, interior tank bottom, tank inner connecting tube, adnexa are had bad luck to tank at one Stack neat, when tank bottoms Cold-keeping Layer is constructed, adjusting stowed location accordingly.
Interior tank deck the most according to claim 4 is the double-layer storage tank construction method of flat furred ceiling, and its feature exists In, installing, inside and outside tank shell (5,6) is front, arranges datum mark in respective wallboard installation site, as Each built-up foundation of wallboard.
Interior tank deck the most according to claim 1 is the double-layer storage tank construction method of flat furred ceiling, and its feature exists In, before outer tank dome plate (4) assembles, on dome plate, first angularly pull the sideline of each plate, vault The margin of error of plate amount of lap is less than 5mm;Outer tank dome plate (4) offers hole at lifting mast (7) place, treats Tank body whole height rise to more than during mast (7) overhead height again by bored closure.
Interior tank deck the most according to claim 6 is the double-layer storage tank construction method of flat furred ceiling, and its feature exists In, after using falsework flat for inner canister furred ceiling (3) and outer tank dome plate (4) to be connected, outer tank The inner side of dome plate (4) arranges a circle baffle plate, and the diameter of baffle plate place circumference is consistent with the internal diameter of inner canister.
CN201610268913.0A 2016-04-26 2016-04-26 A kind of interior tank deck is the double-layer storage tank construction method of flat furred ceiling Active CN105952228B (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN106516982A (en) * 2016-10-21 2017-03-22 中国化学工程第六建设有限公司 Hoisting system of upside-down construction storage tank and using method
CN108678388A (en) * 2018-05-05 2018-10-19 十四冶建设集团云南安装工程有限公司 The short mast multiple spot integral hoisting construction engineering method of large capacity circle storage tank
CN110893520A (en) * 2019-11-29 2020-03-20 中石化第四建设有限公司 Storage tank inversion method
CN113145995A (en) * 2021-04-30 2021-07-23 中国化学工程第十四建设有限公司 Construction method suitable for aluminum ceiling of large-scale full-capacity low-temperature storage tank

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CN108678388A (en) * 2018-05-05 2018-10-19 十四冶建设集团云南安装工程有限公司 The short mast multiple spot integral hoisting construction engineering method of large capacity circle storage tank
CN110893520A (en) * 2019-11-29 2020-03-20 中石化第四建设有限公司 Storage tank inversion method
CN113145995A (en) * 2021-04-30 2021-07-23 中国化学工程第十四建设有限公司 Construction method suitable for aluminum ceiling of large-scale full-capacity low-temperature storage tank

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