CN111678649A - Supporting device for detecting cabin tightness of single-shell fuel cabin - Google Patents
Supporting device for detecting cabin tightness of single-shell fuel cabin Download PDFInfo
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- CN111678649A CN111678649A CN202010602499.9A CN202010602499A CN111678649A CN 111678649 A CN111678649 A CN 111678649A CN 202010602499 A CN202010602499 A CN 202010602499A CN 111678649 A CN111678649 A CN 111678649A
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- inclined strut
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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Abstract
The invention discloses a supporting device for detecting the cabin tightness of a single-shell fuel cabin, which comprises a supporting structure, a platform connecting plate and a stringer connecting plate, wherein the platform connecting plate is arranged on the supporting structure; the supporting structure comprises an inclined strut and an upright post, and the inclined strut and the upright post form a triangular structure; the platform connecting plate and the longitudinal girder connecting plate are welded on one side of the upright column, which is far away from the inclined strut; the top plate is welded at the top of the supporting structure; the supporting devices are arranged on two sides of the fuel compartment, a plurality of supporting devices are arranged on each side of the fuel compartment, the supporting devices located on one side of the fuel compartment are connected through inclined strut reinforcing parts, the inclined strut reinforcing parts are installed on the inclined struts, and the bottoms of the supporting structures are fixedly connected with the embedded iron of the total assembly platform. The invention can avoid the deformation of the hull structure caused by the inflation pressure when the single-shell fuel tank block is subjected to a large-cabin inflation test, which affects the installation of a subsequent maintenance system, and improves the construction precision of the fuel tank block.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a supporting device for detecting the cabin tightness of a single-shell fuel cabin.
Background
The ships adopting conventional fuels have great damage to the environment, along with increasing importance on environmental protection internationally, some ships with larger ages gradually face the risk of being eliminated, in order to thoroughly solve the problem of gas emission, some shipowners choose to improve a fuel system, adopt LNG as power, need to reform a certain cabin into a fuel tank, and therefore need to carry a single-shell fuel tank alone, and then install in the cabin of the original ship.
At present, two methods for the tightness test of a ship cabin are provided, one method is to inflate the cabin, the other method is to inflate the empty cabin around the cabin to carry out detection, the two detection methods are both made aiming at a double-shell structure, the tightness test of the single-shell fuel cabin needs to be completed before the main section is hoisted, the problem that the cabin inflation test is easy to deform when the main assembly platform is used, and the experience of the cabin test of the single-shell fuel cabin is not used for reference at present.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the supporting device for the large cabin tightness detection of the single-shell fuel cabin.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a supporting device for detecting the cabin tightness of a single-shell fuel cabin, which comprises a supporting structure, a platform connecting plate and a stringer connecting plate, wherein the platform connecting plate is arranged on the supporting structure;
the supporting structure comprises an inclined strut and an upright post, and the inclined strut and the upright post form a triangular structure;
the platform connecting plate and the longitudinal girder connecting plate are welded on one side, far away from the inclined strut, of the upright column;
the top plate is welded at the top of the supporting structure;
the supporting devices are arranged on two sides of the fuel compartment, a plurality of supporting devices are arranged on each side of the fuel compartment, the supporting devices located on one side of the fuel compartment are connected through inclined strut reinforcing parts, the inclined strut reinforcing parts are installed on the inclined struts, and the bottoms of the supporting structures are fixedly connected with the embedded iron of the total assembly platform.
As a preferred technical scheme, the bracing includes first bracing and second bracing, the one end of first bracing is connected the top of stand, the one end of second bracing is connected the middle part of stand, first bracing with the second bracing is parallel.
As a preferable technical solution, a reinforcing support is provided between the first inclined support and the column, and between the first inclined support and the second inclined support.
As a preferable technical solution, the connection point of the reinforcing support and the upright, and the connection point of the platform connecting plate and the upright are located at the same horizontal height.
Preferably, the connection point of the reinforcing support and the first diagonal brace and the connection point of the diagonal brace reinforcement and the first diagonal brace are located at the same horizontal height.
As a preferable technical scheme, a transverse top plate reinforcing plate and a longitudinal top plate reinforcing plate are welded on the top plate.
Preferably, the stringer connecting plate is installed at a connecting point of the top plate and the upright post.
Preferably, the platform connecting plate is vertically connected with the stringer connecting plate.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention can avoid the deformation of the hull structure caused by the inflation pressure when the single-shell fuel tank block is subjected to a large-cabin inflation test, which affects the installation of a subsequent maintenance system, and improves the construction precision of the fuel tank block.
(2) The longitudinal girder connecting plate is connected with the longitudinal girder of the fuel tank in a butt joint mode, and the platform connecting plate is connected with the platform plate in a butt joint mode. The installation and the disassembly process are convenient, and the subsequent disassembly is convenient.
(3) The invention has simple structure, low manufacturing cost and strong integral stability, can be used as reinforcement in a large cabin inflation test, and can also be used for constraint welding when the assembly of the compartment sections is loose.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a single hull fuel tank in a supported state according to the present invention.
FIG. 2 is a cross-sectional view of a single hull fuel compartment support of the present invention.
Fig. 3 is a schematic structural view of the support structure in fig. 2.
Fig. 4 is a partial method diagram of the position a in fig. 2.
Fig. 5 is a view from direction B of fig. 4.
Fig. 6 is a view in the direction C of fig. 5.
Fig. 7 is a view from direction D of fig. 2.
Fig. 8 is a view from direction E of fig. 7.
Wherein the reference numerals are specified as follows: the structure comprises a fuel tank 1, a supporting structure 2, a diagonal bracing reinforcement 3, a top plate 4, a first diagonal bracing 5, a second diagonal bracing 6, a vertical column 7, a reinforcing support 8, a longitudinal top plate reinforcing plate 9, a platform plate 10, a longitudinal girder plate 11, a platform connecting plate 12, a longitudinal girder connecting plate 13 and a transverse top plate reinforcing plate 14.
Detailed Description
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
The embodiment provides a supporting device for detecting the cabin tightness of a single-shell fuel cabin, and in the total assembly stage, the supporting device is arranged on two sides of the fuel cabin 1, and each side is provided with a plurality of supporting devices to support the fuel cabin 1.
The supporting device comprises an inclined strut, a stand column 7, a top plate 4 and an inclined strut reinforcing part 3, wherein the inclined strut and the stand column 7 are welded to form a triangular structure. The bracing includes first bracing 5 and second bracing 2, and the top of stand 7 is connected to the one end of first bracing 5, and the middle part of stand 7 is connected to the one end of second bracing 2, and first bracing 5 is parallel with second bracing 2, and first bracing 5, second bracing 2 flush with the bottom of stand 7. Be provided with between first bracing 5 and the stand 7, between first bracing 5 and the second bracing 2 and consolidate and support 8, consolidate and support and be parallel to each other between 8, guaranteed overall structure's stability.
Wherein, the side of the column 7 far away from the diagonal bracing is welded with a platform connecting plate 12 and a longitudinal girder connecting plate 13, and the positions of the platform connecting plate 12 and the longitudinal girder connecting plate 13 correspond to the positions of the platform plate 10 and the longitudinal girder plate 11 on the fuel tank 1. The single-shell fuel tank 1 is fragile in structure, and during a tank inflation test, the bulkhead of the fuel tank 1 bulges outwards due to the effect of internal pressure, so that the deformation of the fuel tank 1 is caused, and in order to reduce the deformation of the fuel tank 1 and ensure the strength of the fuel tank 1 during the tank inflation test, the upright post 7 needs to be connected with the vertical truss plate 11 near the platform plate 10 on the fuel tank 1, so that the platform connecting plate 12 is vertically connected with the vertical truss connecting plate 13 in the embodiment.
The top plate 4 is welded on the tops of the first inclined strut 5 and the upright post 7, the tops of the first inclined strut 5 and the upright post 7 need to be flattened before the top plate 4 is welded, in order to ensure the strength of the top plate 4, the transverse top plate reinforcing plate 14 and the longitudinal top plate reinforcing plate 9 are welded on the top plate 4, and the transverse top plate reinforcing plate 14 is perpendicular to the longitudinal top plate reinforcing plate 9. In order to further improve the structural stability, a stringer connecting plate 13 is installed at the connecting point of the top plate 4 and the upright post 7.
And reinforcing supports 8 are arranged between the first inclined support 5 and the upright post 7 and between the first inclined support 5 and the second inclined support 2. The connecting points of the reinforcing supports 8 and the upright posts 7 and the connecting points of the platform connecting plates 12 and the upright posts 7 are positioned at the same horizontal height. The connection point of the reinforcing support 8 and the first inclined strut 5 and the connection point of the inclined strut reinforcing part 3 and the first inclined strut 5 are positioned at the same horizontal height.
Wherein, the supporting structures 2 are connected through the bracing reinforcement 3, and the bracing reinforcement 3 is installed on the first bracing 5.
The supporting method for the large cabin airtightness detection of the single-shell fuel cabin comprises the following steps:
step one, manufacturing a supporting structure 2, wherein the supporting structure 2 comprises an inclined strut and an upright post 7, and the inclined strut and the upright post 7 form a triangular structure.
And step two, welding a platform connecting plate 12 and a longitudinal girder connecting plate 13 on the upright post 7 according to the positions of the platform plate 10 and the longitudinal girder plate 11 on the fuel tank 1.
And step three, the top of the supporting structure 2 is flattened, and a top plate 4 reinforcing plate are installed at the top of the supporting structure 2.
And fourthly, drawing out an installation position line of the supporting structure 2 on the total assembly platform. In order to ensure the accuracy of the mounting position of the support structure 2, the mounting position line should include the longitudinal and transverse positions; the installation of the inclined strut is to ensure that the verticality deviation is less than or equal to 5mm, and meanwhile, the transverse deviation and the longitudinal deviation are less than or equal to 2 mm.
And fifthly, installing the supporting structures 2 in place, connecting the supporting structures 2 through the inclined strut reinforcing parts 3, connecting and fixing the bottoms of the supporting structures 2 and the embedded iron of the total assembly platform, and because the supporting structures 2 are high and easy to destabilize, the bottoms of the supporting structures 2 need to be connected and fixed with the embedded iron of the platform, and meanwhile, the supporting structures 2 are reinforced by the inclined strut reinforcing parts 3.
And step six, carrying out total assembly of the fuel cabin 1, and carrying out a cabin inflation test after the total assembly is finished. In the overall assembly positioning process, the fuel cabin 1 is prevented from colliding with the inclined strut in sections. The longitudinal girder connecting plate 13 is connected with the longitudinal girder plate 11 of the fuel tank 1 in a butt joint mode, and the platform connecting plate 12, the top plate 4 and the platform plate 10 of the fuel tank 1 are connected in a butt joint mode, so that subsequent disassembly is facilitated.
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (8)
1. A supporting device for detecting the cabin tightness of a single-shell fuel cabin is characterized by comprising a supporting structure, a platform connecting plate and a stringer connecting plate;
the supporting structure comprises an inclined strut and an upright post, and the inclined strut and the upright post form a triangular structure;
the platform connecting plate and the longitudinal girder connecting plate are welded on one side, far away from the inclined strut, of the upright column;
the top plate is welded at the top of the supporting structure;
the supporting devices are arranged on two sides of the fuel compartment, a plurality of supporting devices are arranged on each side of the fuel compartment, the supporting devices located on one side of the fuel compartment are connected through inclined strut reinforcing parts, the inclined strut reinforcing parts are installed on the inclined struts, and the bottoms of the supporting structures are fixedly connected with the embedded iron of the total assembly platform.
2. The supporting device for tightness testing of a mono-hull fuel tank cabin according to claim 1, wherein said brace comprises a first brace and a second brace, one end of said first brace is connected to a top portion of said column, one end of said second brace is connected to a middle portion of said column, and said first brace and said second brace are parallel.
3. The supporting device for tightness testing of a mono-hull fuel tank cabin according to claim 2, wherein a reinforcing support is provided between said first inclined strut and said upright post and between said first inclined strut and said second inclined strut.
4. The supporting device for tightness testing of a mono-hull fuel tank cabin according to claim 3, wherein the connecting points of said reinforcing support and said vertical column and the connecting points of said platform connecting plate and said vertical column are located at the same level.
5. The support device for the tightness test of the mono-hull fuel tank cabin according to claim 4, wherein a connection point of the reinforcing support and the first diagonal brace, and a connection point of the diagonal brace reinforcement and the first diagonal brace are located at the same level.
6. The supporting device for the tightness test of the single-shell fuel tank cabin as recited in claim 1, wherein the top plate is welded with a transverse top plate reinforcing plate and a longitudinal top plate reinforcing plate.
7. The supporting device for tightness testing of a mono-hull fuel tank cabin according to claim 6, wherein said stringer connecting plate is installed at the connecting point of said top plate and said upright.
8. The support device for tightness testing of a mono-hull fuel tank cabin according to claim 1, wherein said platform connection plate is vertically connected to said stringer connection plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010602499.9A CN111678649A (en) | 2020-06-29 | 2020-06-29 | Supporting device for detecting cabin tightness of single-shell fuel cabin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010602499.9A CN111678649A (en) | 2020-06-29 | 2020-06-29 | Supporting device for detecting cabin tightness of single-shell fuel cabin |
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| CN111678649A true CN111678649A (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010602499.9A Pending CN111678649A (en) | 2020-06-29 | 2020-06-29 | Supporting device for detecting cabin tightness of single-shell fuel cabin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682421A (en) * | 2021-09-17 | 2021-11-23 | 沪东中华造船(集团)有限公司 | Supporting device for film type LNG fuel tank and installation method thereof |
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| CN201527330U (en) * | 2009-10-28 | 2010-07-14 | 沪东中华造船(集团)有限公司 | Device for tightness test of ship cabin |
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| CN208376996U (en) * | 2018-06-15 | 2019-01-15 | 沪东中华造船(集团)有限公司 | A kind of moulding bed support device for the segmentation of LNG boiler-plate |
| KR20190049357A (en) * | 2017-11-01 | 2019-05-09 | 현대중공업 주식회사 | Gas treatment system and gas carrier having the same |
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2020
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Patent Citations (5)
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| CN201527330U (en) * | 2009-10-28 | 2010-07-14 | 沪东中华造船(集团)有限公司 | Device for tightness test of ship cabin |
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| CN108189973A (en) * | 2017-12-21 | 2018-06-22 | 沪东中华造船(集团)有限公司 | A kind of method for supporting for super-container vessel normal state installation hatch coaming |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682421A (en) * | 2021-09-17 | 2021-11-23 | 沪东中华造船(集团)有限公司 | Supporting device for film type LNG fuel tank and installation method thereof |
| CN113682421B (en) * | 2021-09-17 | 2024-04-09 | 沪东中华造船(集团)有限公司 | Supporting device for thin-film LNG fuel tank and mounting method thereof |
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Application publication date: 20200918 |