CN107824997B - Method for mounting asymmetric equatorial belt shell plate - Google Patents
Method for mounting asymmetric equatorial belt shell plate Download PDFInfo
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- CN107824997B CN107824997B CN201711049789.XA CN201711049789A CN107824997B CN 107824997 B CN107824997 B CN 107824997B CN 201711049789 A CN201711049789 A CN 201711049789A CN 107824997 B CN107824997 B CN 107824997B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
Abstract
The invention discloses an installation method of asymmetric equatorial belt shell plates, which comprises the following steps: placing an equatorial plate on the pairing platform, marking an upper support positioning point on the equatorial plate, placing the lower end of the equatorial plate on the horizontal platform, and placing the upper end of the equatorial plate on a cross beam of the lifting adjusting device; supporting the upper end of the equatorial plate by a cross beam of a lifting adjusting device, adjusting the mounting height of the cross beam, fixing the cross beam when the distance group of the upper support positioning points of the equatorial plate reaches the theoretical height of the platform, and welding an upper support and the equatorial plate at the upper support positioning points of the equatorial plate; and (3) installing a lower support column and a pull rod accessory on the foundation, hoisting the equatorial plate, fixing the upper support column and the lower support column, and then installing other belt shell plates after the installation of the equatorial plate is completed. The mounting method of the asymmetric equatorial belt shell plate provided by the invention is convenient for mounting the equatorial plate.
Description
Technical Field
The invention relates to the technical field of spherical tank installation, in particular to an installation method of an asymmetric equatorial belt shell plate.
Background
The construction of the spherical tank comprises workshop manufacture and field installation, and components directly welded with the spherical shell plate, such as welding between the upper pillar and the equatorial plate, are manufactured in the workshop, and semi-finished spherical shell plates are transported to a construction field, lifted and spliced into a whole and then welded. The traditional three-belt spherical tank, five-belt spherical tank and seven-belt spherical tank adopt a symmetrical split structural form, and one of the characteristics is that the equatorial belt spherical shell plate is symmetrical in the latitudinal direction and the longitudinal direction, and the latitudinal center of the equatorial plate is just positioned on the central horizontal line of the spherical tank. Therefore, when the equatorial plate is paired with the spherical tank support, the support is welded at the right center position of the outer side of the equatorial plate, so that the support is ensured to be exactly tangent to the spherical tank when being installed. Because the equatorial plate structure is completely symmetrical, the symmetrical equatorial plate is very easy to assemble and weld, as shown in fig. 1.
With the continuous large volume of the spherical tank, the domestic maximum propylene spherical tank has reached 40003The large volume of the spherical tank makes the split type-setting form of the spherical shell plate diversified. When the volume of the spherical tank is fixed, the number of the spherical shell plates is reduced as much as possible, the spherical tank split optimization is realized, and the purpose of improving the utilization rate of the spherical shell plate materials is realized. The four-belt spherical tank is a new split form developed on the basis of the traditional three-belt spherical tank, and the equatorial belt of the traditional spherical tank is divided into two parts in the latitudinal direction, namely the equatorial belt and the upper temperature belt. The equatorial plates of the four-belt spherical tank are only symmetrical in the warp direction and asymmetrical in the weft direction, as shown in fig. 2, and are called asymmetrical equatorial plates. If the asymmetric equatorial plate and the strut are assembled and welded by adopting the traditional method, the upper strut and the horizontal platform form a certain angle, the precision is not easy to control, and the installation efficiency is low. In addition, the existing method needs to build a construction platform for assembling a lower pillar and an equatorial plate with an upper pillar on site, and has area requirements on a construction site.
Disclosure of Invention
The invention mainly aims to provide a method for mounting asymmetric equatorial belt shell plates, aiming at facilitating the mounting of the asymmetric equatorial belt shell plates.
In order to achieve the above object, the present invention provides a method of mounting an asymmetric equatorial belt shell plate, comprising the steps of:
placing an equatorial plate on the pairing platform, marking an upper support positioning point on the equatorial plate, placing the lower end of the equatorial plate on the horizontal platform, and placing the upper end of the equatorial plate on a cross beam of the lifting adjusting device;
supporting the upper end of the equatorial plate by a cross beam of a lifting adjusting device, adjusting the mounting height of the cross beam, fixing the cross beam when the height of the platform reaches the theoretical height by the distance group of upper support positioning points of the equatorial plate, and welding an upper support at the upper support positioning points of the equatorial plate;
and (3) installing a lower support column and a pull rod accessory on the foundation, hoisting the equatorial plate, fixing the upper support column and the lower support column, and then installing other belt shell plates after the installation of the equatorial plate is completed.
Preferably, the locating point of the upper pillar on the equatorial plate is the intersection point of the horizontal line of the center of the spherical tank and the longitudinal symmetry line.
Preferably, when the equatorial plates are hoisted, two adjacent equatorial plates with upper struts are hoisted in sequence, the upper struts and the corresponding lower struts are fixed, then the equatorial plate without the upper struts between the two equatorial plates is hoisted, and other equatorial plates are hoisted accordingly.
Preferably, the upper support and the lower support are fixed by matching a circular seam clamp and a fixing block.
Preferably, the upper leg is secured in relative parallel to the set-up platform when welded thereto.
Preferably, after all the equatorial plates are hoisted, the hoisting of other belt shell plates is carried out after the geometric dimension between the equatorial belt and the supporting column is integrally adjusted to be within an allowable error range.
The mounting method of the asymmetric equatorial belt shell plate provided by the invention has the following beneficial effects:
1. when a workshop is manufactured, the position of the horizontal center line of the asymmetric equatorial plate is adjusted to the virtual symmetric height h by the aid of the lifting adjusting device, so that the levelness of the strut is conveniently measured when the strut and the equatorial plate are assembled. As long as the support column is ensured to be horizontal, the support column can be ensured to be tangent to the equatorial plate, and the installation of the equatorial plate is facilitated;
2. when assembling on site, the lower support (containing accessories such as a pull rod and the like) is installed firstly, when the equatorial plate is hoisted, the connection of the circular seam between the upper support and the lower support is carried out in the air (the traditional method is to weld the upper support and the lower support on a ground construction platform and then hoist the upper support and the lower support), the circular seam between the lower support and the upper support is connected by adopting a circular seam fixture and a fixed block to match and connect the group, after one circle of the equatorial belt is assembled, the overall adjustment of the geometric dimension between the equatorial belt and the support is carried out, and the reduction of the assembling stress. Meanwhile, the method does not need to set up a construction platform for assembling the lower pillar and the equatorial plate with the upper pillar on site, thereby greatly reducing the requirement on the site area of the construction site. Meanwhile, the hoisting machine class can be saved, and the hoisting efficiency of the spherical tank is improved.
Drawings
FIG. 1 is a schematic view of a symmetrical equatorial plate;
FIG. 2 is a schematic view of the structure of an asymmetric equatorial plate;
FIG. 3 is a schematic structural view of the present asymmetric equatorial belt shell plate installation method before the installation of the equatorial plate and the upper support;
FIG. 4 is a schematic structural view of the asymmetric equatorial belt shell plate installation method after the installation of the equatorial plate and the upper support;
FIG. 5 is a schematic view showing the construction of a lifting adjusting device in the present method for mounting a shell plate for an asymmetric equatorial belt;
FIG. 6 is a schematic view of the asymmetric equatorial belt shell plate installation method in installing the lower support pillar and its attachments;
FIG. 7 is a schematic view of the present method of mounting an asymmetric equatorial belt skin plate in a configuration for mounting a first equatorial plate;
FIG. 8 is a schematic view of the present method of mounting an asymmetric equatorial belt skin plate in a third equatorial plate;
FIG. 9 is a schematic structural diagram of the installation method of the asymmetric equatorial belt shell plate when the hoisting of the equatorial plate is finished.
In the figure, 1-equatorial plate, 2-upper strut, 3-lower strut, 4-equatorial belt, 5-polar sideboard, 6-polar sideboard, 7-polar middle plate, 8-upper polar belt, 9-lower polar, 10-paired platforms, 11-upper strut positioning point, 12-lifting adjusting device, 13-jack, 14-beam and 15-column.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 to 9, in the present preferred embodiment, a method of mounting an asymmetric equatorial belt skin plate comprises the steps of:
step S10, placing the equatorial plate 1 on the pairing platform 10, marking an upper strut positioning point 11 on the equatorial plate 1, placing the lower end of the equatorial plate 1 on the horizontal platform, and placing the upper end of the equatorial plate 1 on the cross beam 14 of the lifting adjusting device 12;
step S20, supporting the cross beam 14 of the lifting adjusting device 12 on the upper end of the equatorial plate 1, adjusting the installation height of the cross beam 14, fixing the cross beam 14 when the height of the platform 10 reaches the theoretical height by the distance group of the upper support positioning point 11 of the equatorial plate 1, and welding the upper support 2 at the upper support positioning point 11 of the equatorial plate 1;
step S30, the lower support 3 and the tie rod attachment are installed on the foundation, after the equatorial plate 1 is hoisted and the upper support 2 and the lower support 3 are fixed, after the installation of the equatorial plate 1 is completed, the installation of other belt shell plates is performed.
In step S10, the upper strut positioning point 11 on the equatorial plate 1 is the intersection of the horizontal line of the spherical tank center and the warp symmetry line. When the upper column 2 is welded, it is ensured to be relatively parallel to the fitting-up platform 10. The lifting adjustment device 12 includes two columns 15, a cross beam 14 between the two columns 15, and a jack 13 below the cross beam 14. The jacks 13 drive the cross beams 14 to move up and down, and the upright columns 15 are used for limiting the two sides of the equatorial plate 1.
In step S30, when hoisting the equatorial plates 1, two adjacent equatorial plates 1 with upper struts 2 are hoisted in sequence, the upper struts 2 and the corresponding lower struts 3 are fixed, and then the equatorial plate 1 without the upper struts 2 between the two equatorial plates 1 is hoisted, and the other equatorial plates 1 are hoisted accordingly. The upper support 2 and the lower support 3 are fixed by matching a circular seam clamp and a fixed block (the circular seam clamp and the fixed block can be realized by the conventional equipment).
After all the equatorial plates 1 are hoisted, the geometric dimension between the equatorial belt and the support is integrally adjusted to be within an allowable error range (the distance between the upper support 2 and the lower support 3 is adjusted by adjusting the installation position of the fixing block on the circular seam fixture), and then other plates with shells are hoisted.
In the following, a specific spherical tank is taken as an example, and the spherical tank parameters are as follows: the spherical tank consists of an asymmetric equatorial belt, an upper temperature belt, an upper polar belt and a lower polar belt, wherein the asymmetric equatorial belt plate 12 of an upper strut 2, the asymmetric equatorial belt plate 12 of a lower strut and a total of 24 equatorial plates 1 are arranged, and the strut consists of two sections of the upper strut 2 and the lower strut 3, as shown in figure 2. The installation process is as follows.
(1) When a workshop is manufactured, an equatorial plate 1 is placed on the pairing platform 10, a spherical tank center horizontal line and a warp symmetry line are marked on the equatorial plate 1, and an intersection point a is an upper support positioning point 11. The equatorial plate 1 is placed on a horizontal platform at its lower end and on the cross-beams 14 of the lifting adjusting device 12 at its upper end, as shown in fig. 4.
(2) The theoretical height h is calculated, and the cross beam 14 supports the upper end of the equatorial plate 1 through the lifting adjusting device 12. When the height of the a point reaches the theoretical height h from the platform, the beam 14 is fixed, as shown in fig. 5.
(3) When hoisting on site, the lower support 3 and the pull rod accessories are firstly installed on the foundation, as shown in figure 6.
(4) A first asymmetric equatorial plate 1 with upper pillars 2 is hoisted, as shown in fig. 7. The upper supporting columns 2 and the lower supporting columns 3 are matched and fixed by adopting a circular seam clamping apparatus and a fixing block, and the equatorial plate 1 is temporarily fixed by adopting a wind rope if necessary.
(5) In the same way as in the previous step, the asymmetric equatorial plate 1 of the second upper support 2 is lifted adjacent to the support in step 4, and then the equatorial plate 1 without the upper support 2 is lifted between the two supports, as shown in fig. 8.
(6) And (5) sequentially adopting the step (4) and the step (5) to finish the hoisting of the asymmetric equatorial plate 1. As shown in fig. 9. After the geometric dimension between the equatorial belt and the strut is integrally adjusted to be within an allowable error range, other belt shell plates are hoisted.
The above method steps (1) to (2) are also applicable to a single-section strut (strut structure without upper and lower sections). The steps (3) to (6) are also suitable for the field assembly of the symmetrical equatorial belt spherical tank.
The mounting method of the asymmetric equatorial belt shell plate provided by the invention has the following beneficial effects:
1. when a workshop is manufactured, the horizontal center line position of the asymmetric equatorial plate is adjusted to the virtual symmetric height h by the aid of the lifting adjusting device 12, and the levelness of the strut when the strut and the equatorial plate are paired can be conveniently measured. As long as the support column is ensured to be horizontal, the support column can be ensured to be tangent to the equatorial plate, and the installation of the equatorial plate is facilitated;
2. when assembling on site, the lower support 3 (containing accessories such as a pull rod and the like) is installed firstly, when the equatorial plate is hoisted, the connection of the circular seam between the upper support 2 and the lower support 3 is carried out in the air (the traditional method is to weld the upper support and the lower support 3 on a ground construction platform and then hoist the upper support and the lower support), the circular seam between the lower support 3 and the upper support 2 is matched and connected by adopting a circular seam fixture and a fixed block, after the equatorial belt is assembled for one circle, the geometric dimension between the equatorial belt and the supports is integrally adjusted, and the reduction of the assembling stress is facilitated. Meanwhile, the method does not need to set up a construction platform for assembling the lower strut 3 and the equatorial plate with the upper strut 2 on site, and the requirement on the site area of a construction site is greatly reduced. Meanwhile, the hoisting machine class can be saved, and the hoisting efficiency of the spherical tank is improved.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are intended to be covered by the scope of the present invention.
Claims (5)
1. A method of mounting an asymmetric equatorial belt skin plate comprising the steps of:
placing an equatorial plate on the pairing platform, marking an upper support positioning point on the equatorial plate, placing the lower end of the equatorial plate on the horizontal platform, and placing the upper end of the equatorial plate on a cross beam of the lifting adjusting device;
supporting the upper end of the equatorial plate by a cross beam of a lifting adjusting device, adjusting the mounting height of the cross beam, fixing the cross beam when the height of the platform reaches the theoretical height by the distance group of upper support positioning points of the equatorial plate, and welding an upper support at the upper support positioning points of the equatorial plate;
installing a lower support column and a pull rod accessory on the foundation, hoisting the equatorial plate and fixing the upper support column and the lower support column, and then installing other belt shell plates after the installation of the equatorial plate is completed;
after all the equatorial plates are hoisted, the geometric dimension between the equatorial belt and the strut is integrally adjusted to be within an allowable error range, and then other belt shell plates are hoisted.
2. The method of mounting an asymmetric equatorial belt skin plate of claim 1, wherein the upper strut location point on the equatorial plate is the intersection of the horizontal line of the spherical tank center and the meridional symmetry line.
3. The method for mounting an asymmetric equatorial belt casing plate according to claim 1, wherein the equatorial plate is hoisted by hoisting the equatorial plates of two adjacent upper struts in turn and fixing the upper strut and the corresponding lower strut, and then hoisting the equatorial plate without the upper strut between the two equatorial plates and hoisting the other equatorial plates in turn.
4. The method of mounting an asymmetric equatorial belt skin as claimed in claim 1, wherein the upper and lower support struts are fixed to each other by means of a circumferential seam clamp and a fixing block.
5. The method of mounting an asymmetric equatorial belt skin as claimed in claim 1, wherein the upper support struts are welded while ensuring their relative parallelism with the pair-opposing platforms.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711049789.XA CN107824997B (en) | 2017-10-31 | 2017-10-31 | Method for mounting asymmetric equatorial belt shell plate |
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| CN201711049789.XA CN107824997B (en) | 2017-10-31 | 2017-10-31 | Method for mounting asymmetric equatorial belt shell plate |
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| CN107824997B true CN107824997B (en) | 2020-10-16 |
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| CN2709773Y (en) * | 2003-12-30 | 2005-07-13 | 刘福录 | Ball-shape storage tank |
| JP6139957B2 (en) * | 2013-04-19 | 2017-05-31 | 三井造船株式会社 | Sphere support structure for liquefied gas carrier |
| CN103343875B (en) * | 2013-06-17 | 2015-09-30 | 武汉一冶钢结构有限责任公司 | A kind of Double-layer Spherical and lifting method thereof |
| CN103883132B (en) * | 2014-04-11 | 2016-01-13 | 沈阳工业安装工程股份有限公司 | Low head assemble method and jig structure on a kind of Nuclear Safety shell |
| CN104002079B (en) * | 2014-05-12 | 2016-02-10 | 上海市安装工程集团有限公司 | The stainless steel spherical tank spherical shell assembling parts instrument of anti-welding deformation and assemble method |
| CN105113776B (en) * | 2015-09-18 | 2017-06-13 | 武汉一冶钢结构有限责任公司 | The support meanss and building method of pole inner top platform on a kind of spherical tank |
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