CN105083486A - Temporary fixing device and construction method thereof - Google Patents
Temporary fixing device and construction method thereof Download PDFInfo
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- CN105083486A CN105083486A CN201510481241.7A CN201510481241A CN105083486A CN 105083486 A CN105083486 A CN 105083486A CN 201510481241 A CN201510481241 A CN 201510481241A CN 105083486 A CN105083486 A CN 105083486A
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- buoyancy tank
- fastening device
- internal thread
- temporary fastening
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Abstract
The invention provides a temporary fixing device and a construction method thereof. The device is used for being arranged between an upper buoyancy tank and a lower buoyancy tank in wet towing transportation of a novel semi-submersible type oil production platform. The device is characterized by comprising a plurality of base structures arranged above a deckhead of the lower buoyancy tank, plug pin structures which are in one-to-one correspondence to the base structures and arranged below an underdeck of the upper buoyancy tank and above the base structures, lower internal thread components fixed to the side faces of the base structures, upper internal thread components fixed to the side face of the upper buoyancy tank and located over the lower internal thread components, and studs with two ends fixedly connected with the lower internal thread components and the upper internal thread components respectively, wherein an opening is formed in the middle of each base structure, and each plug pin structure is inserted into the corresponding opening.
Description
Technical field
The present invention relates to a kind of anchor fitting and construction method, particularly a kind of be applied to novel semisubmersible oil production platform wet haul defeated in temporary fastening device between two buoyancy tank and construction method thereof.
Background technology
When semisubmersible oil production platform is after shipyard has been built, need to be transported to operation marine site, generally had two kinds of methods: for short range transport, can directly have been drawn to operation marine site by tugboat, namely wet and drag; For middle and long distance transport, be then first transported to the more shallow harbour of refuge of the depth of water near operation marine site (namely dry drag) by carrier, then be dragged to operation marine site by tugboat is wet.Visible, no matter which kind of method, wet and drag the process of being absolutely necessary.For conventional semisubmersible platform, its hull structure comprises column, buoyancy tank and stull, and these structures were closed up in the shipyard construction phase, and hull structure forms an entirety, can overall towage go out.In recent years, based on new engineering demand, domestic and international company proposes series of new semisubmersible platform concept, is generally increase accessory structure below conventional semi-submerged platform buoyancy tank, such as, hang down and swing plate, truss, second layer buoyancy tank etc.For reducing wave load, the drinking water of these accessory structures is comparatively dark, and is limited by the restriction (being generally no more than 14 meters) of shipyard harbour drinking water, and these accessory structures cannot be welding as one with main body when dispatching from the factory, and need to install to sea.
For unconditional stability equipped deep-draft floating production platform, together with in the middle part of it, annular buoyancy tank (namely going up buoyancy tank) and small bore column, base circle ballast tank (namely playing buoyancy tank) were not brought together in construction phase and towage stage, need to assemble again to sea.When the wet haul of platform is defeated, upper buoyancy tank will be placed on above lower buoyancy tank.After arriving job position, then the two is connected together by certain way.In order to reduce the construction operations such as afloat welding, application as far as possible, needing to adopt temporary fixing structure between upper buoyancy tank and lower buoyancy tank, the relative motion of both control in towage process, reducing the coating material breakage of colliding and causing, even structural damage.On the other hand, because offshore construction window is limited, the temporary fastening device adopted should be convenient to dismounting as much as possible.
Summary of the invention
The present invention carries out to solve the problem, and object is to provide a kind of different scale that is adapted to be connected with the buoyancy tank of shape, and structural safety reliability is high, and cost is low, the temporary fastening device that offshore construction is easy and construction method thereof.
Temporary fastening device provided by the invention and construction method thereof, for novel semisubmersible oil production platform wet haul defeated in upper buoyancy tank and lower buoyancy tank between, there is such feature, comprising: several base constructions, above the flying deck being arranged on lower buoyancy tank; Latch structure, with base construction one_to_one corresponding, below the underdeck being arranged on buoyancy tank, the top of base construction; Lower internal thread component, is fixed on the side of base construction; Upper internal threaded component, is fixed on the side of buoyancy tank, directly over lower internal thread component; And thru-bolt, two ends are mutually permanently connected with lower internal thread component and upper internal threaded component respectively, and wherein, base construction, central authorities have perforate, and latch structure inserts in perforate.
Temporary fastening device provided by the invention and construction method thereof, also have such feature: wherein, and the size of perforate is greater than the size of latch structure.
Temporary fastening device provided by the invention and construction method thereof, also have such feature: wherein, and the shape of perforate can be square hole, circular hole, ellipse.
Temporary fastening device provided by the invention and construction method thereof, also have such feature: wherein, and thru-bolt can according to the distance free-extension between upper buoyancy tank and lower buoyancy tank.
The temporary fastening device construction method that the present invention also provides, for novel semisubmersible oil production platform wet haul defeated in upper buoyancy tank and lower buoyancy tank between, there is such feature, comprise the following steps: steps A, anchor fitting is installed in shipyard; And step B, remove after anchor fitting is at sea in place, wherein, steps A, has: steps A 1, base construction is arranged in place and lower buoyancy tank is welding as one, and on the flying deck of lower buoyancy tank, arranges certain support pier; Steps A 2, is lifted upper buoyancy tank above lower buoyancy tank by crane, and latch structure inserts in the perforate of base construction by leading the modes such as cable traction by employing; Steps A 3, is connected one end of thru-bolt with lower internal thread component; And steps A 4, upper internal threaded component is connected with the other end of thru-bolt, and by upper internal threaded Member Welding on the outside plate side of upper buoyancy tank, step B, have: step B1, utilize part anchoring system to locate novel semisubmersible oil production platform temporarily, control the motion of novel semisubmersible oil production platform; Step B2, by buoyancy tank under deck winch or other facility tractives, controls its motion, prepares for removing temporary fastening device; Step B3, adopts the junction between under-water robot cutting thru-bolt and upper internal threaded component, and detail sanding; And step B4, complete dismounting operation, continue other offshore constructions.
The temporary fastening device construction method that the present invention also provides, also has such feature: wherein, several base constructions, above the flying deck being arranged on lower buoyancy tank; Latch structure, with base construction one_to_one corresponding, below the underdeck being arranged on buoyancy tank, the top of base construction; Lower internal thread component, is fixed on the side of base construction; Upper internal threaded component, is fixed on the side of buoyancy tank, directly over lower internal thread component; And thru-bolt, two ends are mutually permanently connected with lower internal thread component and upper internal threaded component respectively, and wherein, base construction, central authorities have perforate, and latch structure inserts in perforate.
The temporary fastening device construction method that the present invention also provides, also has such feature: wherein, and the size of perforate is greater than the size of latch structure.
The temporary fastening device construction method that the present invention also provides, also has such feature: wherein, and the shape of perforate can be square hole, circular hole, ellipse.
The temporary fastening device construction method that the present invention also provides, also has such feature: wherein, and thru-bolt can according to the distance free-extension between upper buoyancy tank and lower buoyancy tank.
Invention effect
According to temporary fastening device involved in the present invention and construction method thereof, have employed the combination of traditional welding and mechanical mechanism connection mode, there is higher technology maturity, cost is low; 2, only need remove the connection of thru-bolt side and platform at sea when the present invention constructs, under-water operation is few, and operation is all outside buoyancy aid, and safety is high; 3, the present invention achieves the object be connected by upper and lower buoyancy tank by simple mechanism, and in towage process, between upper and lower buoyancy tank, relative motion obtains and suppresses constraint, ensure that transportation safety.4, Applicable scope of the present invention is not by the restriction of the factors such as buoyancy tank shape, size, quantity, applied widely.In sum, the present invention has and can be adapted to different scale and be connected with the buoyancy tank of shape, and structural safety reliability is high, and cost is low, the advantages such as offshore construction is easy, can be widely used in comprising the platform pattern of temporary fixed many buoyancy aids in the needs towage at sea of novel semisubmersible oil production platform.
Accompanying drawing explanation
Fig. 1 is the front view of the present invention's temporary fastening device in an embodiment;
Fig. 2 is the birds-eye view of the present invention's A-A section in an embodiment;
Fig. 3 is the schematic diagram of the present invention's base construction in an embodiment deployment scenarios on lower buoyancy tank flying deck; And
Fig. 4 is the present invention's construction location schematic diagram of the present invention on " unconditional stability equipped deep-draft floating production platform " in an embodiment.
Detailed description of the invention
Referring to drawings and Examples, temporary fastening device involved in the present invention and construction method thereof are explained in detail.
Embodiment
Fig. 1 is the front view of the present invention's temporary fastening device in an embodiment.
Fig. 2 is the birds-eye view of the present invention's A-A section in an embodiment.
Fig. 3 is the schematic diagram of the present invention's base construction in an embodiment deployment scenarios on lower buoyancy tank flying deck.
As shown in Figure 1, Figure 2 and Figure 3, temporary fastening device has: base construction 1, latch structure 2, lower internal thread component 3, upper internal threaded component 4 and thru-bolt 5.
Temporary fastening device be used for novel semisubmersible oil production platform wet haul defeated in upper buoyancy tank 7 and lower buoyancy tank 6 between.
Several base construction 1 central authorities have perforate 1-1 respectively.Base construction 1 is arranged in the flying deck outer edge of lower buoyancy tank 6, and is located on strong component or strong frame, does local strengthening under deck, can arrange multiple base construction 1, together with being welded to each other above the flying deck of lower buoyancy tank 6.
The size of perforate 1-1 is greater than the size of latch structure 2, has certain interval after latch structure 2 inserts perforate 1-1, ensures to install redundancy.The shape of perforate 1-1 can be the form that square hole, circular hole, ellipse etc. are easy to manufacture.
Latch structure 2 and base construction 1 one_to_one corresponding, quantity is identical with base construction 1, is arranged on the underdeck of buoyancy tank 7, does local strengthening under deck, should be arranged in the flying deck strong component place of buoyancy tank 7, the top of base construction 1 as far as possible, inserts in perforate 1-1.
Lower internal thread component 3 is welded on the side of each base construction 1 in advance, is positioned at outside lower buoyancy tank 6.
Upper internal threaded component 4 is arranged on the outside plate side of buoyancy tank 7, directly over lower internal thread component 3.
Lower internal thread component 3 is consistent with upper internal threaded component 4 quantity, appearance similar.
Thru-bolt 5 two ends are mutually permanently connected with lower internal thread component 3 and upper internal threaded component 4 respectively, for connecting lower internal thread component 3 and upper internal threaded component 4, the matching size of its size and upper buoyancy tank 7, lower buoyancy tank 6 spacing and lower internal thread component 3, upper internal threaded component 4 closes.
Thru-bolt 5 can according to the distance free-extension between upper buoyancy tank 7 and lower buoyancy tank 6.
Fig. 4 is the present invention's construction location schematic diagram of the present invention on " unconditional stability equipped deep-draft floating production platform " in an embodiment.
As shown in Figure 4, in figure, dashed circle place is construction location of the present invention.
Temporary fastening device construction method has following steps:
Steps A: anchor fitting 1 is installed in shipyard.
Steps A comprises the following steps:
Steps A 1: arrange in place by base construction 1, is welding as one with lower buoyancy tank 6, and arranges certain support pier on the flying deck of lower buoyancy tank 6, enters steps A 2.
Steps A 2: upper buoyancy tank 7 lifted the top to lower buoyancy tank 6 by crane, and adopt and ensured latch structure 2 to insert in the perforate 1-1 of base construction 1 by modes such as leading cable traction, enter steps A 3.
Steps A 3: adopt normal machines to be connected with lower internal thread component 3 one end of thru-bolt 5, enter steps A 4.
Steps A 4: the other end of upper internal threaded component 4 with thru-bolt 5 is connected, and upper internal threaded component 4 is welded on the outside plate side of upper buoyancy tank 7.
Step B: remove after anchor fitting is in place at sea.
Step B comprises the following steps:
Step B1: utilize part anchoring system temporarily to locate novel semisubmersible oil production platform, controls the motion of novel semisubmersible oil production platform, enters step B2.
Step B2: by buoyancy tank 6 under deck winch or other facility tractives, controls its motion, preparing, entering step B3 for removing temporary fastening device.
Step B3: adopt the junction between under-water robot cutting thru-bolt 5 and upper internal threaded component 4, and detail sanding, enter step B4.
Step B4: complete dismounting operation, continues other offshore constructions.
The effect of embodiment and effect
Temporary fastening device and construction method thereof involved by the present embodiment, have employed the combination of traditional welding and mechanical mechanism connection mode, has higher technology maturity, cost is low; 2, only need remove the connection of thru-bolt side and platform at sea when the present invention constructs, under-water operation is few, and operation is all outside buoyancy aid, and safety is high; 3, the present invention achieves the object be connected by upper and lower buoyancy tank by simple mechanism, and in towage process, between upper and lower buoyancy tank, relative motion obtains and suppresses constraint, ensure that transportation safety.4, Applicable scope of the present invention is not by the restriction of the factors such as buoyancy tank shape, size, quantity, applied widely.In sum, the present invention has and can be adapted to different scale and be connected with the buoyancy tank of shape, and structural safety reliability is high, and cost is low, the advantages such as offshore construction is easy, can be widely used in comprising the platform pattern of temporary fixed many buoyancy aids in the needs towage at sea of novel semisubmersible oil production platform.
Above-mentioned embodiment is preferred case of the present invention, is not used for limiting the scope of the invention.
Claims (9)
1. a temporary fastening device, for novel semisubmersible oil production platform wet haul defeated in upper buoyancy tank and lower buoyancy tank between, it is characterized in that, comprising:
Several base constructions, above the flying deck being arranged on described lower buoyancy tank;
Latch structure, with described base construction one_to_one corresponding, below the underdeck being arranged on described upper buoyancy tank, the top of described base construction;
Lower internal thread component, is fixed on the side of described base construction;
Upper internal threaded component, is fixed on the side of described upper buoyancy tank, directly over described lower internal thread component; And
Thru-bolt, two ends are mutually permanently connected with described lower internal thread component and described upper internal threaded component respectively,
Wherein, described base construction, central authorities have perforate,
Described latch structure inserts in described perforate.
2. temporary fastening device according to claim 1, is characterized in that:
Wherein, the size of described perforate is greater than the size of described latch structure.
3. temporary fastening device according to claim 1, is characterized in that:
Wherein, the shape of described perforate can be square hole, circular hole, ellipse.
4. temporary fastening device according to claim 1, is characterized in that:
Wherein, described thru-bolt can according to the distance free-extension between described upper buoyancy tank and described lower buoyancy tank.
5. a temporary fastening device construction method, for novel semisubmersible oil production platform wet haul defeated in upper buoyancy tank and lower buoyancy tank between, it is characterized in that, comprise the following steps:
Steps A, installs anchor fitting in shipyard; And
Step B, removes after described anchor fitting is at sea in place,
Wherein, described steps A, has:
Steps A 1, arranges that by base construction in place and described lower buoyancy tank is welding as one, and arrange certain support pier on the flying deck of described lower buoyancy tank;
Steps A 2, lifted above described lower buoyancy tank by described upper buoyancy tank, and latch structure inserts in the perforate of described base construction by leading the modes such as cable traction by employing by crane;
Steps A 3, is connected one end of thru-bolt with lower internal thread component; And
Steps A 4, is connected the other end of upper internal threaded component with described thru-bolt, and by described upper internal threaded Member Welding on the outside plate side of described upper buoyancy tank,
Described step B, has:
Step B1, utilizes part anchoring system to locate described novel semisubmersible oil production platform temporarily, controls described novel semisubmersible oil production platform motion;
Step B2, by buoyancy tank lower described in deck winch or other facility tractives, controlling its motion, preparing for removing described temporary fastening device;
Step B3, employing under-water robot cuts the junction between described thru-bolt and described upper internal threaded component, and detail sanding; And
Step B4, completes dismounting operation, continues other offshore constructions.
6. temporary fastening device construction method according to claim 5, is characterized in that:
Wherein, several base constructions described, above the flying deck being arranged on described lower buoyancy tank;
Described latch structure, with described base construction one_to_one corresponding, below the underdeck being arranged on described upper buoyancy tank, the top of described base construction;
Described lower internal thread component, is fixed on the side of described base construction;
Described upper internal threaded component, is fixed on the side of described upper buoyancy tank, directly over described lower internal thread component; And
Described thru-bolt, two ends are mutually permanently connected with described lower internal thread component and described upper internal threaded component respectively,
Wherein, described base construction, central authorities have described perforate,
Described latch structure inserts in described perforate.
7. temporary fastening device construction method according to claim 5, is characterized in that:
Wherein, the size of described perforate is greater than the size of described latch structure.
8. temporary fastening device construction method according to claim 5, is characterized in that:
Wherein, the shape of described perforate can be square hole, circular hole, ellipse.
9. temporary fastening device construction method according to claim 5, is characterized in that:
Wherein, described thru-bolt can according to the distance free-extension between described upper buoyancy tank and described lower buoyancy tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481241.7A CN105083486A (en) | 2015-08-03 | 2015-08-03 | Temporary fixing device and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481241.7A CN105083486A (en) | 2015-08-03 | 2015-08-03 | Temporary fixing device and construction method thereof |
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| CN105083486A true CN105083486A (en) | 2015-11-25 |
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| CN201510481241.7A Pending CN105083486A (en) | 2015-08-03 | 2015-08-03 | Temporary fixing device and construction method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887697A (en) * | 2016-06-13 | 2016-08-24 | 中铁八局集团第二工程有限公司 | Temporary flexible leg hinged support fixing device for bridge girder erection machine |
| CN106892052A (en) * | 2017-03-17 | 2017-06-27 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | A kind of removable short buoyancy tank attachment structure of lower water workboat |
| CN109080762A (en) * | 2018-05-31 | 2018-12-25 | 沪东中华造船(集团)有限公司 | A method of it is fixed temporarily for LNG ship cargo tank sublevel insulated case |
| CN112874722A (en) * | 2021-01-06 | 2021-06-01 | 海洋石油工程股份有限公司 | Method for butting and folding hull and blocks of semi-submersible platform |
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| CN109080762A (en) * | 2018-05-31 | 2018-12-25 | 沪东中华造船(集团)有限公司 | A method of it is fixed temporarily for LNG ship cargo tank sublevel insulated case |
| CN112874722A (en) * | 2021-01-06 | 2021-06-01 | 海洋石油工程股份有限公司 | Method for butting and folding hull and blocks of semi-submersible platform |
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