CN115341648A - Large-scale low-temperature storage tank steel dome slicing assembly device and construction process - Google Patents

Large-scale low-temperature storage tank steel dome slicing assembly device and construction process Download PDF

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Publication number
CN115341648A
CN115341648A CN202211143477.6A CN202211143477A CN115341648A CN 115341648 A CN115341648 A CN 115341648A CN 202211143477 A CN202211143477 A CN 202211143477A CN 115341648 A CN115341648 A CN 115341648A
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China
Prior art keywords
support
edge
steel dome
storage tank
central
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CN202211143477.6A
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Chinese (zh)
Inventor
潘吉龙
赵大鹏
张宏志
崔魏
刘斌
张奉忠
金焰
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China Petrochemical Corp
Sinopec Tenth Construction Co Ltd
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China Petrochemical Corp
Sinopec Tenth Construction Co Ltd
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Priority to CN202211143477.6A priority Critical patent/CN115341648A/en
Publication of CN115341648A publication Critical patent/CN115341648A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E04B1/3211—Structures with a vertical rotation axis or the like, e.g. semi-spherical structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
    • E04B1/3416—Structures comprising mainly a central support column and a cantilevered roof
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/08—Vaulted roofs
    • E04B7/10—Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures
    • E04B7/102—Shell structures
    • 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
    • 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
    • E04G21/14—Conveying or assembling building elements
    • 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
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/18—Adjusting tools; Templates
    • 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
    • E04G25/00—Shores or struts; Chocks
    • 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
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E04H12/10—Truss-like structures
    • 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
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/20—Side-supporting means therefor, e.g. using guy ropes or struts
    • 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
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/24—Cross arms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B2001/0053—Buildings characterised by their shape or layout grid
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E04B2001/3217—Auxiliary supporting devices used during erection of the arched structures

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses a large-scale low-temperature storage tank steel dome slicing assembly device and a construction process, and relates to the technical field of steel domes. The steel dome plate comprises a central support and edge supports arranged inside a storage tank, and middle supports connected with each steel dome plate, wherein the height of the central support is higher than that of the middle supports, and the height of the middle supports is higher than that of the edge supports; the mounting center point of the central support coincides with the center reference point of the storage tank, the front section of each steel dome sheet is connected with the central support, the middle section of each steel dome sheet is connected with the middle support, and the tail section of each steel dome sheet is connected with the edge support. The invention can keep the prefabricated curvature of the steel dome in the steel dome segment assembling construction process, adjust the arch height according to the requirement, simultaneously avoid the use of large-scale scaffold equipment, reduce the time of manual high-altitude operation, improve the construction safety and effectiveness and reduce the cost.

Description

Large-scale low-temperature storage tank steel dome slicing assembly device and construction process
Technical Field
The invention belongs to the technical field of steel domes, and particularly relates to a large-scale low-temperature storage tank steel dome slicing assembly device and a construction process.
Background
With the development of society and the advancement of technology, large-scale equipment and instruments appear. The production, assembly and maintenance of these large-scale equipment require operations in a large-span and ultra-high space, which undoubtedly presents a great challenge to the assembly and construction of the equipment.
At present, a large-scale low-temperature storage tank generally adopts a full-capacity tank with relatively high safety, an outer tank is of a reinforced concrete structure, and a steel inner tank comprises a 9Ni cylinder inner tank, a vault (a steel dome and an aluminum suspended ceiling), a lining plate, an embedded part, a hot angle protection structure and other components. The span of the large-scale low-temperature storage tank steel dome is generally more than 100 meters, the steel dome structure of the tank top is uniformly divided into a plurality of pieces along the circumferential direction for performing the segmented prefabrication by adopting a segmented prefabrication method in the prior art, and the whole tank top is of a spherical structure, so that overhead operation is often required when the steel dome is constructed and installed.
The inventors have found that in the face of large span ultra high steel dome installation problems, the following problems are often encountered: 1. the construction process is limited by the large construction scaffold equipment lease market; 2. large equipment lease cost and labor cost can be caused by adopting large-scale construction scaffold equipment; 3. because personnel need long-term overhead operation in the whole construction process, huge potential safety hazards exist; 4. the prefabricated curvature of steel dome before hardly guaranteeing among the welding process is unchangeable, and the deformation problem in the work progress is serious, and is difficult to control to make the tank deck that the multi-disc steel dome makes up not conform to the spherical curvature requirement of designing before, influence the intensity of whole storage tank.
Disclosure of Invention
The invention aims to provide a steel dome slice assembling device and a construction process for a large-scale low-temperature storage tank, which can keep the prefabricated curvature of a steel dome in the steel dome slice assembling construction process, adjust the arch height according to the requirement, avoid the use of large-scale scaffold equipment, reduce the time of manual high-altitude operation, improve the construction safety and effectiveness and reduce the cost.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides a steel dome slicing and assembling device for a large-scale low-temperature storage tank in a first aspect.
A large-scale cryogenic storage tank steel dome slicing and assembling device comprises a center support and edge struts which are arranged inside a storage tank, and middle struts which are connected with each steel dome slice, wherein the height of the center support is higher than that of the middle struts, and the height of the middle struts is higher than that of the edge struts; the mounting center point of the central support coincides with the center reference point of the storage tank, the front section of each steel dome sheet is connected with the central support, the middle section of each steel dome sheet is connected with the middle support, and the tail section of each steel dome sheet is connected with the edge support.
Preferably, the central support comprises four central upright posts, a plurality of cross arms are arranged between every two adjacent central upright posts, crossed inclined struts are arranged between every two adjacent cross arms, a top platform is arranged at the top of the central support, and inclined struts are arranged on two sides of each central upright post of the central support.
Preferably, the central support is further provided with a crawling ladder, and the top of the crawling ladder is connected with the top platform; the top platform is also provided with a center ring.
Preferably, the edge pillar comprises a support, a connecting support and an edge stand column, the support is fixedly connected with the bottom of the storage tank, the edge stand column is arranged on the support, a connecting piece is arranged at the top end of the edge stand column, the connecting support is arranged on the edge stand column, and the edge stand column is fixedly connected with the outer tank wall of the storage tank through the connecting support.
Preferably, a vertical lining embedded part is arranged in the outer tank wall of the storage tank, and the connecting support is welded and fixed with the vertical lining embedded part.
Preferably, the connecting piece includes a backing plate and sets up in two locating plates at a backing plate top, still be provided with the backup pad on the backing plate, the backup pad is connected with steel dome piece's tail section fixed connection.
Preferably, the middle support column comprises a base and a jack arranged in the base, the base is fixedly connected with the bottom of the storage tank, the free end of the jack is connected with a middle upright column, and the middle upright column is detachably connected with the middle section of the steel dome sheet.
Preferably, the top of the middle upright post is provided with a second gasket, the second gasket is symmetrically provided with a second lifting lug, the lower part of the steel dome sheet is provided with a first lifting lug, and the first lifting lug and the second lifting lug are detachably connected through a bolt.
Preferably, the base includes two risers that set up relatively on bottom plate and the bottom plate, the jack sets up between two risers, still is provided with the roof between two risers, roof upper portion is provided with the intermediate column, the free end of jack passes the preformed hole on the roof and is connected with the intermediate column.
The invention provides a construction process based on the steel dome slicing assembly device for the large-scale low-temperature storage tank in a second aspect.
A construction process based on the large-scale low-temperature storage tank steel dome slicing assembly device comprises the following steps:
prefabricating an edge pillar, a middle pillar and a central bracket;
(II) positioning and paying off the edge support, the middle support and the central support:
(1) Positioning and paying-off of the edge strut: determining the number and the installation angles of the edge struts, wherein the installation angle positions of the edge struts are consistent with the angle of the radial beam of the dome, and the installation positions of the edge struts are uniformly distributed along the circumference of the tail end of the steel dome sheet;
(2) The middle strut is arranged at the center of the steel dome sheet and at a position which deviates from the center of the circle by a set distance;
(3) Positioning and paying off of a central support: the mounting center point of the center support is consistent with the center datum point of the storage tank;
(III) installing the edge support, the middle support and the central support:
(1) Installation of the edge support:
(1) fixing the central line of the support of the edge support on a positioning line according to the positioning and paying-off position of the edge support, and correcting the perpendicularity of the edge support by using a horizontal ruler;
(2) welding and fixing the edge upright post and a vertical lining embedded part of the outer tank wall of the storage tank by using a connecting support;
(3) vertical lining embedded parts of adjacent edge stand columns are distributed in a single-double-part alternating mode to complete fixing of the edge stand columns;
(4) after the edge stand columns are fixed, uniformly leveling the height of the edge stand columns, and welding a first backing plate on the edge stand columns after the requirements are met;
(2) Mounting a central bracket:
(1) hoisting the central support into the tank to be in place, ensuring that the center of the central support is consistent with the reference center of the storage tank, and correcting the four central upright columns to be vertical;
(2) after the central support is corrected, the lower end of the central upright post and an embedded part at the bottom of the storage tank are subjected to full-weld fixation;
(3) after welding, installing and welding the diagonal bracing;
(3) Mounting of a middle strut: before the steel dome sheet is hoisted into the tank, a second lifting lug of the middle strut and a first lifting lug of the steel dome sheet are connected together by bolts, and the middle strut and the steel dome sheet are hoisted in place;
(IV) installing a steel dome sheet:
(1) Mounting center ring
(1) Hoisting the center ring in place, placing the center ring on the center support, wherein the center of the center ring is consistent with the reference center of the storage tank, and ensuring that the bolt holes of the center ring are consistent with the bolt holes of the radial beam in position;
(2) correcting the upper plane of the center ring to be horizontal;
(3) after the upper surface of the central ring is corrected to be horizontal, the central ring is fixed with a central upright post of a central bracket;
(2) The steel dome sheets are installed in a crossed and symmetrical mode until all the steel dome sheets are installed;
(3) And after the steel dome sheets are installed in a crossed and symmetrical mode, the symmetrical steel dome sheets are welded in an assembling mode.
The invention has the following beneficial effects:
1. the steel dome sheet-splitting assembly device for the large-scale low-temperature storage tank is particularly suitable for carrying out sheet-splitting assembly on a large-span steel dome, and compared with the mode that in the prior art, when the large-span steel dome is assembled and constructed, the large-scale hoisting device and the scaffold device are only used for carrying out personnel-intensive and device-intensive assembly, the large-scale low-temperature storage tank steel dome sheet-splitting assembly device saves a large number of scaffold devices, saves a large amount of workload of manual high-altitude operation, and reduces unsafety brought by the high-altitude operation.
2. The center support, the edge support and the middle support are combined, the center support is used as a reference, the front section of the steel dome sheet is fixed on the center ring of the center support, the edge support is used for effectively fixing the tail section of the steel dome sheet, the middle support is used for adjusting the arch height and the curvature of the steel dome sheet, and the problems that the steel dome sheet is easy to deform and the curvature is difficult to control during construction of the steel dome sheet in the prior art can be effectively solved.
3. According to the invention, the center support, the edge support and the middle support are combined to assemble the steel dome sheet in a piece-by-piece manner, so that the prefabricated curvature and arch height of the steel dome sheet can be ensured, the strength of the subsequent whole storage tank is improved, and the effectiveness of steel dome sheet piece-by-piece assembly construction is ensured.
4. The invention reduces the dependence on large-scale hoisting devices and scaffolds, makes the construction process more compact and reduces the construction cost.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram according to an embodiment of the present invention;
FIG. 2 is a schematic view of a center support structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of an edge pillar structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of an edge pillar connector according to an embodiment of the present invention;
FIG. 5 is a schematic view of an intermediate pillar structure according to an embodiment of the present invention;
FIG. 6 is a schematic view of the structure of FIG. 5 from direction A;
FIG. 7 is a schematic view of the base structure of the middle pillar of the present invention;
FIG. 8 is a schematic view of the center ring structure of the present invention;
in the drawings, the reference numbers indicate the following list of parts: the structure of the steel roof support comprises a center support 1, a marginal pillar 2, a steel dome top plate 3, a middle pillar 4, a center upright post 5, a cross arm 6, an inclined strut 7, a top platform 8, an inclined strut 9, a ladder stand 10, a center ring 11, a support seat 12, a connecting support 13, a marginal upright post 14, a connecting piece 15, a vertical lining embedded part 16, a base plate 17, a positioning plate 18, a supporting plate 19, a base 20, a jack 21, a middle upright post 22, a gasket 23 II, a lifting lug 24I, a lifting lug 25 II, a bolt 26, a bottom plate 27, a vertical plate 28 and a top plate 29.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "middle", "outer", "inner", "lower", "around", and the like, indicate an orientation or positional relationship for the convenience of description and simplicity of description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
The first embodiment is as follows:
referring to fig. 1-8, the present invention relates to a large-scale cryogenic storage tank steel dome sheet assembly device, which includes a central support 1 and edge pillars 2 disposed inside the storage tank, and a middle pillar 4 connected to each steel dome sheet 3, wherein the height of the central support 1 is higher than that of the middle pillar 4, and the height of the middle pillar 4 is higher than that of the edge pillars 2; the installation center point of the central support 1 coincides with the center reference point of the storage tank, the front section of each steel dome sheet 3 is connected with the central support 1, the middle section is connected with the middle support 4, and the tail section is connected with the edge support 2.
Fig. 1 is a schematic view of the overall structure of the present invention. Since the tank top of the storage tank is a spherical surface, each steel dome sheet 3 is assembled in a slicing mode according to the arc-shaped surface of the spherical surface. The front section position of the steel dome sheet 3 corresponds to the vertex position of the spherical arc surface, the middle section position of the steel dome sheet 3 corresponds to the middle position of the spherical arc surface, and the tail section position of the steel dome sheet 3 corresponds to the position of the spherical arc surface close to the endpoint. The distance between the front section position of the steel dome sheet 3 and the horizontal plane is the largest, the distance between the tail section position of the steel dome sheet 3 and the horizontal plane is the smallest, and the distance between the middle section position and the horizontal plane is the same.
Further, the central support 1 comprises four central columns 5, a plurality of cross arms 6 are arranged between every two adjacent central columns 5, crossed inclined struts 7 are arranged between every two adjacent cross arms 6, a top platform 8 is arranged at the top of the central support 1, and inclined struts 9 are arranged on two sides of each central column 5 of the central support 1.
In the embodiment, a plurality of cross arms 6 are uniformly arranged along the height direction of the central upright post 5, and the number of the cross arms 6 is 4-8.
Further, a ladder stand 10 is further arranged on the central support 1, and the top of the ladder stand 10 is connected with a top platform 8; the top platform 8 is also provided with a centering ring 11.
The ladder stand 10 is arranged to facilitate climbing of a worker to operate the top platform 8 of the central support 1. The central ring 11 is arranged so that each steel dome sheet 3 has a reference position which can be fixed.
Further, edge pillar 2 includes support 12, joint support 13 and edge stand 14, support 12 and storage tank bottoms fixed connection, be provided with edge stand 14 on the support 12, the top of edge stand 14 is provided with connecting piece 15, be provided with joint support 13 on the edge stand 14, through joint support 13 fixed connection between the outer jar wall of edge stand 14 and storage tank.
Further, a vertical lining embedded part 16 is arranged in the outer tank wall of the storage tank, and the connecting support 13 is welded and fixed with the vertical lining embedded part 16.
In consideration of the stability of the support columns, in the embodiment, one connecting support 13 is added at the circumferential lining embedded part with the height of 0.625 meters on the outer tank wall of the storage tank, and the number of the supports is 48. That is, the number of adjacent vertical liner embedments 16 is alternately single and double.
Further, the connecting piece 15 includes a backing plate 17 and sets up in two locating plates 18 at a backing plate 17 top, still be provided with the backup pad 19 on a backing plate 17, the backup pad 19 and the tail section fixed connection of steel dome piece 3.
The positioning plate 18 is used for positioning and is convenient to install.
Further, the middle support 4 comprises a base 20 and a jack 21 arranged in the base 20, the base 20 is fixedly connected with the bottom of the storage tank, the free end of the jack 21 is connected with a middle upright column 22, and the middle upright column 22 is detachably connected with the middle section of the steel dome sheet 3. The jack 21 functions to facilitate adjustment of the camber of the steel dome sheet 3.
In this embodiment, the positions of the middle support 4 are: the middle part of the steel dome sheet 3 is slightly deviated from the center of the circle. This is also for the purpose of facilitating adjustment of the crown of each sheet of steel dome sheet 3.
Further, a second gasket 23 is arranged at the top of the middle upright column 22, second lifting lugs 25 are symmetrically arranged on the second gasket 23, a first lifting lug 24 is arranged on the lower portion of the steel dome sheet 3, and the first lifting lug 24 and the second lifting lug 25 are detachably connected through bolts 26.
Further, the base 20 includes two risers 28 that set up relatively on bottom plate 27 and the bottom plate 27, jack 21 sets up between two risers 28, still is provided with roof 29 between two risers 28, roof 29 upper portion is provided with middle standing pillar 22, the free end of jack 21 passes the preformed hole on the roof 29 and is connected with middle standing pillar 22.
When the middle upright post 22 and the steel dome sheet 3 are fixed, in the embodiment, only the first lifting lug 24 and the second lifting lug 25 need to be fixed by the bolts 26, so that the operation is convenient, and the fixing effect is good.
Example two:
the embodiment discloses a construction process of a large-scale low-temperature storage tank steel dome slicing assembly device.
A construction process of a large-scale low-temperature storage tank steel dome slicing assembly device specifically comprises the following steps:
1. prefabrication of dome tool equipment
(1) The dome device consists of a central support, a middle strut and an edge strut.
(2) According to the construction requirement on site, each tank needs 1 set of central support, 60 sets of middle support and 96 sets of edge support. The heights of the three are determined by the installation height of the storage tank suspended ceiling, and the number and the specification of the middle support column and the edge support column are determined by the weight and the number of the fragments of the installed steel dome.
(3) The central support consists of 4 upright posts, inclined struts, a top platform and the like.
(4) The middle pillar comprises a first lifting lug, a second lifting lug, a middle upright post, a base and the like.
(5) The edge pillar consists of an edge upright post, a connecting support and a support.
(6) The central support, the middle support and the edge support jointly form a temporary tooling device for supporting the steel dome sheet, and the installation arch height of the steel dome is ensured by adjusting the middle support.
2. Dome tooling device installation
2.1 Dome tooling device positioning paying-off
(1) Positioning and paying off of the edge strut: the number of the edge support columns is 96 (96 are arranged in a 16-ten-thousand cubic meter storage tank, if the volume of the storage tank is increased, the number and the specification are adjusted according to actual stress). The installation angle position of the edge struts is consistent with the angle of the dome radial beam, and the edge struts are uniformly distributed along the circumference by taking the 0-degree position of the cross center line as a starting point.
(2) Positioning of the middle strut: the middle part of each dome sheet is slightly deviated from the center of a circle, so that the arch height of each dome sheet is adjusted.
(3) Positioning and paying off of a central support: the installation center point of the center support is consistent with the center datum point of the storage tank.
2.2 installation of dome tooling device
(1) Installation of the edge support:
(1) and (4) fixing the central line of the base of the edge pillar on a positioning line according to the positioning and paying-off position of the edge pillar, and correcting the verticality of the edge pillar by using a horizontal ruler.
(2) And welding and fixing the edge support column and the vertical lining embedded part of the outer tank wall of the storage tank by using a connecting support.
(3) Considering the stability of the support, a connecting support is added at the position of a circumferential lining embedded part with the height of 0.625 meters on the outer tank wall of the storage tank, and the number of the supports is 48 (single-piece and double-piece alternate distribution).
(4) After the edge support is fixed, the height of the edge support is leveled uniformly by a level meter according to the reference elevation, and after the requirement of a drawing is met, the top base plate of the edge support is welded on the edge support.
(2) Installation of a central support:
(1) and (4) hoisting the central support into the tank to be in place, ensuring that the center of the central support is consistent with the reference center of the storage tank, and correcting the four central upright posts to be vertical.
(2) And after the central support is corrected, the lower end of the central upright post and an embedded part at the bottom of the storage tank are fixed in a full welding manner.
(3) And after the welding of the central support is finished, installing and welding the diagonal bracing.
(4) The height of the central support is adjusted according to the reference elevation of the storage tank foundation, and the dome installation elevation is met.
(3) Mounting of a middle strut: before the steel dome sheet is hoisted into the tank, the second lifting lug of the middle strut is connected with the first lifting lug welded below the steel dome sheet in advance through bolts, and the middle strut and the steel dome sheet are hoisted in place.
3. Installation of steel dome
(1) Mounting center ring
(1) And hoisting the center ring in place, placing the center ring on the center pillar, enabling the center of the center ring to be consistent with the reference center of the storage tank, and installing the center ring according to the drawing direction to ensure that the bolt holes of the center ring are consistent with the bolt holes of the radial beam in direction.
(2) The upper plane of the center ring is leveled by a leveling rod.
(3) And after the upper surface of the central ring is leveled, the central ring and the central upright post of the central pillar are fixed by full welding.
(2) Installation sequence of steel dome sheets
And the steel dome sheets are installed in a crossed and symmetrical mode until the installation is completed.
(3) Connections between steel dome sheets
After the dome sheets are installed in a cross-symmetrical manner, assembly welding is performed, and the assembly welding is performed with the assistance of a vertical lifter during movement.
3. Dome tooling device demolition
After all the steel dome sheets are welded, the central support and the middle support can be removed, and after the steel dome sheets are mounted in place in an airlift mode, the edge supports are removed.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. The steel dome split assembling device for the large-scale low-temperature storage tank is characterized by comprising a central support and edge supports which are arranged inside the storage tank, and middle supports which are connected with each steel dome piece, wherein the height of the central support is higher than that of the middle supports, and the height of the middle supports is higher than that of the edge supports; the installation center point of the center support coincides with the center reference point of the storage tank, the front section of each steel dome sheet is connected with the center support, the middle section of each steel dome sheet is connected with the middle support, and the tail section of each steel dome sheet is connected with the edge support.
2. The large-scale cryogenic storage tank steel dome segment assembling device of claim 1, wherein the central support comprises four central upright columns, a plurality of cross arms are arranged between two adjacent central upright columns, cross-shaped diagonal braces are arranged between the adjacent cross arms, a top platform is arranged at the top of the central support, and diagonal braces are arranged on two sides of each central upright column of the central support.
3. The steel dome segment assembling device for the large-scale cryogenic storage tank according to claim 2, wherein a ladder stand is further arranged on the central support, and the top of the ladder stand is connected with a top platform; the top platform is also provided with a center ring.
4. The large-scale cryogenic storage tank steel dome piece-splitting assembly device of claim 1, characterized in that the edge pillars comprise supports, connecting supports and edge columns, the supports are fixedly connected with the bottom of the storage tank, the edge columns are arranged on the supports, connecting pieces are arranged at the top ends of the edge columns, the connecting supports are arranged on the edge columns, and the edge columns are fixedly connected with the outer tank wall of the storage tank through the connecting supports.
5. The large-scale cryogenic storage tank steel dome segment assembling device of claim 4, wherein a vertical lining embedded part is arranged in the outer tank wall of the storage tank, and the connecting support is welded and fixed with the vertical lining embedded part.
6. The large-scale low temperature storage tank steel dome piece-splitting assembly device of claim 4, wherein the connecting piece comprises a first base plate and two positioning plates arranged on the top of the first base plate, a supporting plate is further arranged on the first base plate, and the supporting plate is fixedly connected with the tail section of the steel dome piece.
7. The large cryogenic storage tank steel dome sheet assembly device of claim 1, wherein the intermediate strut comprises a base and a jack arranged in the base, the base is fixedly connected with the bottom of the storage tank, the free end of the jack is connected with an intermediate column, and the intermediate column is detachably connected with the intermediate section of the steel dome sheet.
8. The large-scale cryogenic storage tank steel dome piece-splitting assembling device of claim 7, wherein a second gasket is arranged at the top of the middle upright column, second lifting lugs are symmetrically arranged on the second gasket, a first lifting lug is arranged at the lower part of the steel dome piece, and the first lifting lug and the second lifting lug are detachably connected through bolts.
9. The large-scale low-temperature storage tank steel dome piece-dividing assembling device as claimed in claim 7, wherein the base comprises a bottom plate and two opposite vertical plates on the bottom plate, the jack is arranged between the two vertical plates, a top plate is further arranged between the two vertical plates, a middle upright post is arranged on the top of the top plate, and the free end of the jack penetrates through a reserved hole in the top plate to be connected with the middle upright post.
10. A construction process of the steel dome slice assembling device for the large-scale cryogenic storage tank according to any one of claims 1 to 9, characterized by comprising the following steps:
prefabricating an edge pillar, a middle pillar and a central bracket;
(II) positioning and paying off the edge support, the middle support and the central support:
(1) Positioning and paying-off of the edge strut: determining the number and the installation angle of the edge struts, wherein the installation angle positions of the edge struts are consistent with the angle of the dome radial beam, and the installation positions of the edge struts are uniformly distributed along the circumference of the tail end of the steel dome sheet;
(2) The middle strut is arranged at the center of the steel dome sheet and at a position which deviates from the center of the circle by a set distance;
(3) Positioning and paying off of a central support: the mounting center point of the center support is consistent with the center datum point of the storage tank;
(III) installing the edge support, the middle support and the central support:
(1) Installation of the edge support:
(1) fixing the central line of the support of the edge support on a positioning line according to the positioning and paying-off position of the edge support, and correcting the verticality of the edge support by using a horizontal ruler;
(2) welding and fixing the edge stand column and the vertical lining embedded part of the outer tank wall of the storage tank by using a connecting support;
(3) vertical lining embedded parts of adjacent edge stand columns are distributed in a single-double-part alternating mode to complete fixing of the edge stand columns;
(4) after the edge stand columns are fixed, uniformly leveling the height of the edge stand columns, and welding a first backing plate on the edge stand columns after the requirements are met;
(2) Mounting a central bracket:
(1) hoisting the central support into the tank to be in place, ensuring that the center of the central support is consistent with the reference center of the storage tank, and correcting the four central upright columns to be vertical;
(2) after the central support is corrected, the lower end of the central upright post and an embedded part at the bottom of the storage tank are fixed in a full-welding mode;
(3) after welding, installing and welding the diagonal bracing;
(3) Mounting the middle support column: before the steel dome sheet is hoisted into the tank, a second lifting lug of the middle strut and a first lifting lug of the steel dome sheet are connected together by bolts, and the middle strut and the steel dome sheet are hoisted in place;
(IV) installing a steel dome sheet:
(1) Mounting center ring
(1) Hoisting the center ring in place, placing the center ring on a center support, wherein the center of the center ring is consistent with the reference center of the storage tank, and ensuring that the bolt holes of the center ring are consistent with the bolt holes of the radial beams in position;
(2) correcting the upper plane of the center ring to be horizontal;
(3) after the upper surface of the central ring is corrected to be horizontal, the central ring is fixed with a central upright post of a central bracket;
(2) The steel dome sheets are installed in a crossed and symmetrical mode until all the steel dome sheets are installed;
(3) And after the steel dome sheets are installed in a crossed and symmetrical mode, the symmetrical steel dome sheets are welded in an assembling mode.
CN202211143477.6A 2022-09-20 2022-09-20 Large-scale low-temperature storage tank steel dome slicing assembly device and construction process Pending CN115341648A (en)

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Application Number Priority Date Filing Date Title
CN202211143477.6A CN115341648A (en) 2022-09-20 2022-09-20 Large-scale low-temperature storage tank steel dome slicing assembly device and construction process

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07279474A (en) * 1994-04-11 1995-10-27 Kawasaki Heavy Ind Ltd Construction method of underground low temperature storage tank
JPH1162089A (en) * 1997-08-12 1999-03-05 Mitsubishi Heavy Ind Ltd Construction method for shell type dome roof
CN207348427U (en) * 2017-10-24 2018-05-11 重庆建工第十一建筑工程有限责任公司 A kind of support system for large-span domes installation
CN108820594A (en) * 2018-05-31 2018-11-16 中国电建集团河北工程有限公司 Large Oil storage tank top plate tools, top plate production method and tank deck installation method
KR20190037778A (en) * 2017-09-29 2019-04-08 주식회사 포스코건설 Dome roof construction method for LNG storage
CN112609832A (en) * 2020-12-03 2021-04-06 中国核工业二四建设有限公司 Nuclear power station nuclear island double-shell dome arch membrane forming construction method and construction jig frame
CN114183000A (en) * 2021-09-17 2022-03-15 中国化学工程第十四建设有限公司 Manufacturing and mounting construction method for outer tank steel dome of large-scale low-temperature storage tank

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07279474A (en) * 1994-04-11 1995-10-27 Kawasaki Heavy Ind Ltd Construction method of underground low temperature storage tank
JPH1162089A (en) * 1997-08-12 1999-03-05 Mitsubishi Heavy Ind Ltd Construction method for shell type dome roof
KR20190037778A (en) * 2017-09-29 2019-04-08 주식회사 포스코건설 Dome roof construction method for LNG storage
CN207348427U (en) * 2017-10-24 2018-05-11 重庆建工第十一建筑工程有限责任公司 A kind of support system for large-span domes installation
CN108820594A (en) * 2018-05-31 2018-11-16 中国电建集团河北工程有限公司 Large Oil storage tank top plate tools, top plate production method and tank deck installation method
CN112609832A (en) * 2020-12-03 2021-04-06 中国核工业二四建设有限公司 Nuclear power station nuclear island double-shell dome arch membrane forming construction method and construction jig frame
CN114183000A (en) * 2021-09-17 2022-03-15 中国化学工程第十四建设有限公司 Manufacturing and mounting construction method for outer tank steel dome of large-scale low-temperature storage tank

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