CN104594313A - Technology for land installation of offshore jacket ice-breaking cone - Google Patents
Technology for land installation of offshore jacket ice-breaking cone Download PDFInfo
- Publication number
- CN104594313A CN104594313A CN201410748511.1A CN201410748511A CN104594313A CN 104594313 A CN104594313 A CN 104594313A CN 201410748511 A CN201410748511 A CN 201410748511A CN 104594313 A CN104594313 A CN 104594313A
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- China
- Prior art keywords
- ice
- conical shell
- plate
- ice cone
- shell plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0017—Means for protecting offshore constructions
- E02B17/0021—Means for protecting offshore constructions against ice-loads
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A technology for land installation of an offshore jacket ice-breaking cone comprises the steps of fixing a jacket leg on a cup support, connecting a sealing annular plate of the ice-breaking cone to the jacket leg in a butt joint mode section by section, connecting a round pipe ring of the ice-breaking cone to the sealing annular plate in a butt joint mode segment by segment, connecting and installing sections of an upper conical shell plate and sections of a lower conical shell plate to the two sides of the sealing annular plate respectively in a butt joint mode, installing wrapper sheets on the upper conical shell plate and lower conical shell plate of the ice-breaking cone, installing protecting pipes on the wrapper sheets, installation annular plate rings and remaining parts and components of the conical shell plates on the protecting pipes, and blocking manholes reserved in the upper conical shell plate and the lower conical shell plate to achieve installation and painting of the whole ice-breaking cone. By the adoption of the technology, internal components of the ice-breaking cone can be assembled on the jacket leg of an offshore jacket one by one, site operation difficulty is reduced, and welding seam quality is guaranteed. Furthermore, due to the fact that a pre-protected ice-breaking cone is installed on the jacket leg, construction time is shortened, construction quality is improved, and construction safety is improved.
Description
Technical field
The present invention relates to the mounting process of jacket, particularly relate to a kind of land mounting process of jacket anti-ice cone.Belong to Offshore Engineering field.
Background technology
At present, in the oil-gas field development of Bohai Sea heavy icing area, the destruction of bringing for preventing Ice-excited vibration, generally can install anti-ice cone on the conduit leg of jacket.Anti-ice cone is generally form an enclosure space by Member Weldings such as conical shell plate, deep bracket, ring flat-plates, is interspersed with the production flow line such as marine riser, cable protecting tube therebetween.In work progress, each component of anti-ice cone normally concentrates welding at the construction field (site), then after being transported by total thing and carrying out spray treatment into outfitting shop, completes whole installation.Because anti-ice cone is a taper, its with wear the production flow lines such as intercalary conduit leg, cable protecting tube and form an enclosure space, the space of corner, cone tip and bracket welding is narrower, makes construction space limited; And owing to needing to carry out a large amount of weld jobs in anti-ice cone inside, therefore, there is larger construction hidden danger.In addition, owing to there being a large amount of welding pieces between each component, if construction wrong, also will cause weld seam coincidence, stress is concentrated, the quality problems such as distortion or crack appear in anti-ice cone; Further, the conduit leg sprayed paint, after anti-ice cone is installed, also must carry out high-altitude touch-up paint operation, so, just add difficulty of construction, extend the construction period.
Summary of the invention
Main purpose of the present invention is the above-mentioned shortcoming overcoming prior art existence, and a kind of land mounting process of jacket anti-ice cone is provided, its can not only by anti-ice cone internals item by item group to being installed on the conduit leg of jacket, solve site operation difficulty, weldquality problem; And, before the blanking of anti-ice cone, with regard to the protection operation carrying out sandblasting in advance and prime, and the anti-ice cone of carrying out in advance protecting is installed on conduit leg in place, while anti-ice cone is installed, complete paint work, greatly save the construction period, reduce installation cost; Meanwhile, improve the safety of construction quality and construction.
The object of the invention is to be realized by following technical scheme:
A land mounting process for jacket anti-ice cone, is characterized in that: adopt following steps:
The first step: arrange pad pier in precalculated position, and be fixed on by conduit leg on pad pier, meanwhile, conduit leg carries out the line location of anti-ice cone and welding region and to polish in advance work;
Second step: by the sealing ring flat-plate distinguish abutting joint of anti-ice cone on conduit leg;
3rd step: by the pipe ring section abutting joint of anti-ice cone on sealing ring flat-plate;
4th step: the epicone coverboard of band bracket and the distinguish of lower conical shell plate are distinguished the both sides assigned address of abutting joint at sealing ring flat-plate;
5th step: at the upper and lower conical shell plate reserved location of anti-ice cone, installs a pillar protection circular arc wrapper sheet;
6th step: the prefabricated pillar completed is fitted in place on pillar protection circular arc wrapper sheet;
7th step: install ring flat-plate annulus and conical shell plate remains loose mail outside pillar;
8th step: manhole reserved on upper and lower conical shell plate is carried out shutoff process by end user's port lid, completes the installation of whole anti-ice cone; And while whole anti-ice cone is installed, complete paint work; Then, touch-up paint spraying is carried out then to the anti-ice centrum of installation in position.
The sealing ring flat-plate of described anti-ice cone, pipe ring section, epicone coverboard, lower conical shell plate, pillar protect circular arc wrapper sheet, pillar, ring flat-plate annulus and conical shell plate to remain loose mail, manhole cover, the protection operation carried out sandblasting in advance and prime.
Described upper and lower conical shell plate is before structure prefabricated workshop blanking, first should carry out sandblasting and operation of priming to mother metal, and after the installation of whole anti-ice cone, only need at high-altitude spray paint.
Described pillar is: riser pillar, vertical cable protecting tube.
Beneficial effect of the present invention: the present invention due to adopt technique scheme, its can not only by anti-ice cone internals item by item group to being installed on the conduit leg of jacket, solve site operation difficulty, weldquality problem; And, before the blanking of anti-ice cone, with regard to the protection operation carrying out sandblasting in advance and prime, and the anti-ice cone of carrying out in advance protecting is installed on conduit leg in place, while anti-ice cone is installed, complete paint work, greatly save the construction period, reduce installation cost; Meanwhile, improve the safety of construction quality and construction.
Accompanying drawing explanation
Fig. 1 is rough package drawing of the present invention.
Fig. 2 is anti-ice cone inner sealing ring flat-plate distinguish scheme of installation of the present invention.
Fig. 3 is anti-ice cone inner circular pipe ring segmentation scheme of installation of the present invention.
Fig. 4 is the inner upper and lower conical shell plate scheme of installation of anti-ice cone of the present invention.
Fig. 5 is anti-ice cone of the present invention inner pillar protection circular arc wrapper sheet scheme of installation.
Fig. 6 is the pillar scheme of installation that the present invention passes anti-ice cone inside.
Fig. 7 is that the inner ring flat-plate annulus of anti-ice cone of the present invention and conical shell plate remain loose mail scheme of installation.
Fig. 8 is the manhole cover scheme of installation of reserved manhole on the upper and lower conical shell plate of shutoff of the present invention.
Major label description in figure:
1. pad pier, 2. conduit leg, 3. anti-ice cone, 301. sealing ring flat-plates, 302. pipe ring sections, 303. epicone coverboards, 304. times conical shell plates, 305. pillars protection circular arc wrapper sheets, 306. pillars, 307. ring flat-plate annulus and conical shell plates remain loose mail, 308. manhole covers.
Detailed description of the invention
As Figure 1-Figure 8, the present invention adopts following steps:
The first step: as shown in Figure 1, arranges pad pier 1 in precalculated position, and is adopted by conduit leg 2 welding manner to be fixed on pad pier 1, meanwhile, conduit leg 2 carries out the line location of anti-ice cone 3 and welding region and to polish in advance work;
Second step: as shown in Figure 2, adopts welding manner abutting joint on conduit leg 2 sealing ring flat-plate 301 distinguish of anti-ice cone 3;
3rd step: as shown in Figure 3, adopts welding manner abutting joint on sealing ring flat-plate 301 by the pipe ring section 302 of anti-ice cone 3;
4th step: adopt welding manner abutting joint at the both sides assigned address of sealing ring flat-plate 301 respectively the band epicone coverboard 303 of bracket and the distinguish of lower conical shell plate 304;
5th step: at upper and lower conical shell plate (303, the 304) reserved location of anti-ice cone 3, adopts welding manner to install pillar protection circular arc wrapper sheet 305;
6th step: adopted by the prefabricated pillar 306 completed welding manner to be fitted in place on pillar protection circular arc wrapper sheet 305;
7th step: outside pillar 306, adopts welding manner to install ring flat-plate annulus and conical shell plate remains loose mail 307;
8th step: end user's port lid 308, by upper for upper and lower conical shell plate (303,304) reserved manhole, adopts welding manner to carry out shutoff process, completes the installation of whole anti-ice cone 1; And while whole anti-ice cone 1 is installed, complete paint work; Then, touch-up paint spraying is carried out then to the anti-ice centrum 1 of installation in position.
Above-mentioned epicone coverboard 303 and lower conical shell plate 304 are before structure prefabricated workshop blanking, first should carry out sandblasting and operation of priming to mother metal, and after the installation of whole anti-ice cone, only need at high-altitude spray paint.
The sealing ring flat-plate 301 of above-mentioned anti-ice cone, pipe ring section 302, epicone coverboard 303, lower conical shell plate 304, pillar protect circular arc wrapper sheet 305, pillar 306, ring flat-plate annulus and conical shell plate to remain loose mail 307, manhole cover 308, the protection operation carried out sandblasting in advance and prime.
Above-mentioned pillar 306 is: riser pillar, vertical cable protecting tube.
Above-mentioned sealing ring flat-plate 301, pipe ring section 302, epicone coverboard 303, lower conical shell plate 304, pillar protection circular arc wrapper sheet 305, pillar 306, ring flat-plate annulus and conical shell plate remains loose mail 307, manhole cover 308 is prior art; the technology of not specified (NS) is prior art, therefore repeats no more.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. a land mounting process for jacket anti-ice cone, is characterized in that: adopt following steps:
The first step: arrange pad pier in precalculated position, and be fixed on by conduit leg on pad pier, meanwhile, conduit leg carries out the line location of anti-ice cone and welding region and to polish in advance work;
Second step: by the sealing ring flat-plate distinguish abutting joint of anti-ice cone on conduit leg;
3rd step: by the pipe ring section abutting joint of anti-ice cone on sealing ring flat-plate;
4th step: the epicone coverboard of band bracket and the distinguish of lower conical shell plate are distinguished the both sides assigned address of abutting joint at sealing ring flat-plate;
5th step: at the upper and lower conical shell plate reserved location of anti-ice cone, installs a pillar protection circular arc wrapper sheet;
6th step: the prefabricated pillar completed is fitted in place on pillar protection circular arc wrapper sheet;
7th step: install ring flat-plate annulus and conical shell plate remains loose mail outside pillar;
8th step: manhole reserved on upper and lower conical shell plate is carried out shutoff process by end user's port lid, completes the installation of whole anti-ice cone; And while whole anti-ice cone is installed, complete paint work; Then, touch-up paint spraying is carried out then to the anti-ice centrum of installation in position.
2. the land mounting process of jacket anti-ice cone according to claim 1; it is characterized in that: the sealing ring flat-plate of described anti-ice cone, pipe ring section, epicone coverboard, lower conical shell plate, pillar protect circular arc wrapper sheet, pillar, ring flat-plate annulus and conical shell plate to remain loose mail, manhole cover, the protection operation carried out sandblasting in advance and prime.
3. the land mounting process of jacket anti-ice cone according to claim 1, it is characterized in that: described upper and lower conical shell plate is before structure prefabricated workshop blanking, first should carry out sandblasting and operation of priming to mother metal, and after the installation of whole anti-ice cone, only need at high-altitude spray paint.
4. the land mounting process of jacket anti-ice cone according to claim 1, is characterized in that: described pillar is: riser pillar, vertical cable protecting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748511.1A CN104594313A (en) | 2014-12-09 | 2014-12-09 | Technology for land installation of offshore jacket ice-breaking cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748511.1A CN104594313A (en) | 2014-12-09 | 2014-12-09 | Technology for land installation of offshore jacket ice-breaking cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104594313A true CN104594313A (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410748511.1A Pending CN104594313A (en) | 2014-12-09 | 2014-12-09 | Technology for land installation of offshore jacket ice-breaking cone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775022A (en) * | 2018-07-26 | 2018-11-09 | 中国电建集团华东勘测设计研究院有限公司 | Accessory structure and its construction method are integrated suitable for ice formation offshore wind turbine foundation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61130516A (en) * | 1984-11-30 | 1986-06-18 | Mitsubishi Heavy Ind Ltd | Offshore platform for icy sea area |
| CN200992704Y (en) * | 2006-12-18 | 2007-12-19 | 中国石油天然气集团公司 | Offshore oil platform anti-ice device |
| CN201062355Y (en) * | 2006-09-08 | 2008-05-21 | 中国海洋石油总公司 | U-shaped slotting anti-ice peg |
| CN103088799A (en) * | 2013-01-09 | 2013-05-08 | 中国海洋石油总公司 | Ocean platform wave removal icebreaking structure |
-
2014
- 2014-12-09 CN CN201410748511.1A patent/CN104594313A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61130516A (en) * | 1984-11-30 | 1986-06-18 | Mitsubishi Heavy Ind Ltd | Offshore platform for icy sea area |
| CN201062355Y (en) * | 2006-09-08 | 2008-05-21 | 中国海洋石油总公司 | U-shaped slotting anti-ice peg |
| CN200992704Y (en) * | 2006-12-18 | 2007-12-19 | 中国石油天然气集团公司 | Offshore oil platform anti-ice device |
| CN103088799A (en) * | 2013-01-09 | 2013-05-08 | 中国海洋石油总公司 | Ocean platform wave removal icebreaking structure |
Non-Patent Citations (1)
| Title |
|---|
| 徐田甜: "《我国海上导管架平台抗冰锥体的设计实践》", 《船舶工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775022A (en) * | 2018-07-26 | 2018-11-09 | 中国电建集团华东勘测设计研究院有限公司 | Accessory structure and its construction method are integrated suitable for ice formation offshore wind turbine foundation |
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Application publication date: 20150506 |