CN115229369A - Offshore positioning installation process for limited space structure - Google Patents
Offshore positioning installation process for limited space structure Download PDFInfo
- Publication number
- CN115229369A CN115229369A CN202210699348.9A CN202210699348A CN115229369A CN 115229369 A CN115229369 A CN 115229369A CN 202210699348 A CN202210699348 A CN 202210699348A CN 115229369 A CN115229369 A CN 115229369A
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- China
- Prior art keywords
- offshore
- positioning
- installation
- confined space
- insertion tip
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Classifications
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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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Foundations (AREA)
Abstract
The invention discloses a process for offshore in-place installation of a limited space structure, which comprises the following steps: s1: confirming the installation position of a positioning insertion tip on the lower surface of a base of the structure according to the actual arrangement condition of the upright posts of the structure foundation; s2: installing a positioning insertion tip on the structure at the position; s3: hoisting the structure by using a crane ship to complete the insertion of the positioning insertion tip and the foundation upright post of the structure; s4: checking the levelness of the structure, and welding and fixing after meeting the requirements; on one hand, the invention can effectively reduce the service time of the crane ship in the installation process and reduce the project cost; on the other hand, the in-place precision of the structure is greatly improved, meanwhile, due to the fact that the offshore operation environment is severe and changes infrequently, especially safety accidents are easy to happen to construction in a limited space, the installation work of the structure is completed quickly, the probability of the safety accidents can be reduced to the maximum extent, and the safety of project implementation is greatly improved.
Description
Technical Field
The invention relates to the technical field of ocean engineering, in particular to a marine in-place installation process for a limited space structure.
Background
At present, in the existing process for installing a structure in a limited space of an offshore platform in place, a limit structure is arranged in advance at a proper position of a structure installation area, the structure is hoisted in place by a crane ship, and the structure is accurately placed in place on the structure below by the crane ship. The installation process has high requirement on the stability of the crane ship, and particularly, when the stand column below the structure needs welding operation, the installation process consumes longer operation time, causes greater waste of ship resources and is very unfavorable for the execution of projects.
Disclosure of Invention
The invention aims to provide a construction process capable of quickly installing a structure in a limited space of an offshore platform in place.
In order to solve the technical problem, the invention provides a process for offshore in-place installation of a confined space structure, which comprises the following steps:
s1: confirming the installation position of a positioning insertion tip on the lower surface of a base of the structure according to the actual arrangement condition of the upright posts of the structure foundation;
s2: installing a positioning insertion tip on the structure at the position;
s3: hoisting the structure by using a crane ship to complete the insertion of the positioning insertion tip and the foundation upright post of the structure;
s4: and checking the levelness of the structure, and welding and fixing after meeting the requirements.
According to a preferred embodiment of the present invention, in step S1, a limiting protection structure may be further disposed around the base pillar of the structure.
According to a preferred embodiment of the present invention, in step S1, the structure foundation is formed by welding a plurality of columns and beams to each other.
According to a preferred embodiment of the present invention, in step S1, a slot matching with the positioning insert tip is disposed at the top of the upright post.
According to a preferred embodiment of the invention, after step S1, the mounting position of the positioning insertion tip is marked.
According to a preferred embodiment of the present invention, in step S2, the mounting manner is welding.
According to a preferred embodiment of the invention, after step S2, the fixing of the positioning tips is checked for robustness.
According to a preferred embodiment of the invention, before step S3, it is checked whether the equipment of the crane vessel is intact.
According to a preferred embodiment of the present invention, in step S4, if the levelness is not satisfactory, the crane ship is used to lift the structure for adjustment of the light movement.
The invention has the technical effects that:
1. the invention relates to a marine in-place mounting process for a structure with a limited space, which is characterized in that a positioning insertion tip is welded on the lower surface of a structure base in advance, the structure is hoisted to the structure base which is built on a platform and consists of a plurality of stand columns and cross beams by using a crane ship, the positioning insertion tip is inserted into the stand columns to realize the rapid and accurate in-place of the structure, and the structure is welded and fixed after the levelness of the structure meets the requirement, so that the beneficial effect of rapidly in-place mounting the structure with the limited space of the marine platform is realized.
2. The offshore in-place installation process for the limited space structure can be used for quickly installing the limited space structure of the offshore platform in place, can reduce the service time of a crane ship in the installation process and can reduce the project cost.
3. The offshore positioning installation process for the structure in the limited space can greatly improve the positioning precision of the structure, and meanwhile, due to the fact that the offshore operation environment is severe and changes infrequently, safety accidents are easy to happen particularly to construction of the limited space, the probability of the safety accidents can be reduced to the maximum extent by rapidly completing the installation work of the structure, and the safety of project implementation is greatly improved.
Drawings
FIG. 1 is a schematic structural view of a confined space structure in an offshore in-place installation process of the present invention;
FIG. 2 is a schematic view of the location and insertion point installation position of the offshore location installation process of a confined space structure of the present invention.
Reference numerals are as follows: 1-a structure; 2-positioning and inserting the tip; 3-a structure foundation; 4-positioning the tip marker.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
As shown in fig. 1 and 2, a process for offshore installation of a confined space structure in place comprises the following steps:
s1: confirming the installation position of a positioning insertion tip 2 on the lower surface of a base of a structure 1 according to the actual arrangement condition of the upright posts of the structure foundation 3;
s2: installing a positioning insertion tip 2 on the structure 1 at the position;
s3: hoisting the structure 1 by using a crane ship to complete the insertion of the positioning insertion tip 2 and the upright post of the structure foundation 3;
s4: and checking the levelness of the structure 1, and welding and fixing after meeting the requirements.
Further, in step S1, a limiting protection structure may be arranged around the upright post of the structure foundation 3.
Further, in step S1, the structure foundation 3 is formed by welding a plurality of columns and beams to each other.
Further, in the step S1, a clamping groove matched with the positioning insertion tip 2 is formed in the top of the upright post.
Further, after step S1, the positioning and inserting point mark 4 is provided to the mounting position of the positioning and inserting point 2.
Further, in step S2, the mounting manner is welding.
Further, after the step S2, the fixing firmness of the positioning insertion tip 2 is checked.
Further, before step S3, it is checked whether the equipment of the crane ship is intact.
Further, in step S4, if the levelness does not meet the requirement, the crane ship is used to lift the structure 1 for adjustment of the light movement.
One embodiment is as follows:
1. according to the actual arrangement condition of the upright columns of the structure foundation 3, confirming that the upright columns at 4 positions need to be inserted with tips for assisting in positioning, as shown in FIG. 2;
2. welding positioning insertion tips 2 on the lower surfaces of the base section steels of the structures 1 to be positioned at the 4 positions respectively;
3. hoisting a structure 1 to be in place to a structure foundation 3 consisting of a plurality of stand columns below the structure 1 by using a crane ship with the assistance of the positioning insertion tips 2, and specifically as shown in figure 1;
4. and checking the levelness of the structure 1, and welding and fixing after meeting the requirements.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (9)
1. A process for offshore location and installation of a confined space structure, comprising the steps of:
s1: confirming the installation position of a positioning insertion tip on the lower surface of a base of the structure according to the actual arrangement condition of the upright posts of the structure foundation;
s2: installing a positioning insertion tip on the structure at the position;
s3: hoisting the structure by using a crane ship to complete the insertion of the positioning insertion tip and the foundation upright post of the structure;
s4: and checking the levelness of the structure, and welding and fixing after meeting the requirements.
2. The offshore positioning and installation process of the confined space structure as claimed in claim 1, wherein in step S1, a spacing protection structure is further disposed around the foundation columns of the structure.
3. The offshore site-specific installation process of a confined space structure as claimed in claim 1, wherein in step S1, the structure foundation is formed by welding a plurality of columns and beams to each other.
4. The offshore positioning and installation process of the confined space structure as claimed in claim 3, wherein in step S1, the top of the upright post is provided with a slot matched with the positioning insert tip.
5. The offshore positioning and installation process of the confined space structure as claimed in claim 1, wherein after the step S1, the installation position of the positioning insertion tip is marked.
6. The offshore installation process of the confined space structure as recited in claim 1, wherein in step S2, said installation is performed by welding.
7. The offshore setting process of the confined space structure as claimed in claim 1, wherein after step S2, the firmness of the setting of the positioning insertion tip is checked.
8. The offshore setting process of a confined space structure as claimed in claim 1, wherein before step S3, the crane vessel is checked for intact equipment.
9. The offshore positioning and installation process of the confined space structure as claimed in claim 1, wherein in step S4, if the levelness is not satisfactory, the crane ship is used to lift the structure for adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210699348.9A CN115229369A (en) | 2022-06-20 | 2022-06-20 | Offshore positioning installation process for limited space structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210699348.9A CN115229369A (en) | 2022-06-20 | 2022-06-20 | Offshore positioning installation process for limited space structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115229369A true CN115229369A (en) | 2022-10-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210699348.9A Pending CN115229369A (en) | 2022-06-20 | 2022-06-20 | Offshore positioning installation process for limited space structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115229369A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR830002140B1 (en) * | 1980-06-19 | 1983-10-15 | 필라 디베롭먼트 코포레이션 | Assembly method of building |
| KR20020005156A (en) * | 2000-07-08 | 2002-01-17 | 신승교 | The sea floor base concrete construction and method of building the same |
| CN204160094U (en) * | 2014-09-09 | 2015-02-18 | 中国三冶集团有限公司 | A kind of lift-on/lift-off type steel column welded top positioner |
| CN107876929A (en) * | 2016-09-30 | 2018-04-06 | 株洲中车时代电气股份有限公司 | Weld the position limiting structure and apparatus for work and application method of ellipticity device |
| CN214611072U (en) * | 2021-04-20 | 2021-11-05 | 深圳海油工程水下技术有限公司 | Ocean structure transportation unable adjustment base |
| CN215787664U (en) * | 2021-06-25 | 2022-02-11 | 中铁十一局集团桥梁有限公司 | Intelligent welding machine for mobile bracket and box girder positioning net |
| CN114057089A (en) * | 2021-11-05 | 2022-02-18 | 上海二十冶建设有限公司 | Combined hoisting method for large air compressor in limited space |
-
2022
- 2022-06-20 CN CN202210699348.9A patent/CN115229369A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR830002140B1 (en) * | 1980-06-19 | 1983-10-15 | 필라 디베롭먼트 코포레이션 | Assembly method of building |
| KR20020005156A (en) * | 2000-07-08 | 2002-01-17 | 신승교 | The sea floor base concrete construction and method of building the same |
| CN204160094U (en) * | 2014-09-09 | 2015-02-18 | 中国三冶集团有限公司 | A kind of lift-on/lift-off type steel column welded top positioner |
| CN107876929A (en) * | 2016-09-30 | 2018-04-06 | 株洲中车时代电气股份有限公司 | Weld the position limiting structure and apparatus for work and application method of ellipticity device |
| CN214611072U (en) * | 2021-04-20 | 2021-11-05 | 深圳海油工程水下技术有限公司 | Ocean structure transportation unable adjustment base |
| CN215787664U (en) * | 2021-06-25 | 2022-02-11 | 中铁十一局集团桥梁有限公司 | Intelligent welding machine for mobile bracket and box girder positioning net |
| CN114057089A (en) * | 2021-11-05 | 2022-02-18 | 上海二十冶建设有限公司 | Combined hoisting method for large air compressor in limited space |
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| PB01 | Publication | ||
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Address after: 518051 B2903, CNOOC building, No. 3168, Houhaibin Road, blue coast community, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Applicant after: CNOOC Shenzhen Ocean Engineering Technology Service Co.,Ltd. Address before: 518051 B2903, CNOOC building, No. 3168, Houhaibin Road, blue coast community, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Applicant before: COOEC SUBSEA TECHNOLOGY Co.,Ltd. |