CN205589429U - Platform moon pool fairing - Google Patents
Platform moon pool fairing Download PDFInfo
- Publication number
- CN205589429U CN205589429U CN201521031701.8U CN201521031701U CN205589429U CN 205589429 U CN205589429 U CN 205589429U CN 201521031701 U CN201521031701 U CN 201521031701U CN 205589429 U CN205589429 U CN 205589429U
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- cabin
- moon pool
- wall
- horizontal
- damping
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Abstract
The utility model discloses a platform moon pool fairing, shake the cabin including setting up the damping cabin that separates at the horizontal inner wall in moon pool both ends and through the watertight baffle with subtracting, damping cabin outer wall shakes the cabin lower part outer wall crisscross damping piece that distributes of horizontal several rows respectively with subtracting, subtracts to shake cabin lower part outer wall and set up the several and keep off unrestrained post, subtracts to shake the under -deck and set up the three -layer baffle from top to bottom, and the shape piece is carved towards what correspond about the outer end of platform moon pool sets up to the wrong perpendicular wave absorption piece that distributes of the horizontal several drainage usual friendships of downside and bottom of a ship's hold inner wall on the baffle, baffle. Be equipped with several rectangle openings respectively on the damping cabin outer wall in damping cabin and the vertical wallboard, the horizontal wave absorption piece of the vertical crisscross distribution of horizontal several rows on moon pool vertical both ends inner wall and the vertical wallboard. The utility model discloses a damping cabin is shaken the cabin and can be guaranteed platform safe steady job under different work condition with subtracting. Subtracting and shaking the unrestrained post of fender of cabin lower part outer wall setting and can effectively keep out the impact of incoming flow, weaken the kinetic energy of wave, induced incoming flow toward moon pool bottom motion reduces the formation of swirl in the moon pool.
Description
Technical field
This utility model relates to a kind of device reducing ocean engineering structure drag effects, particularly to a kind of reduce drilling platforms moon pool under different operating modes liquid level vibration, rock the device with whirlpool, belong to Naval Architecture and Ocean Engineering technical field.
Background technology
Along with mankind's increase in demand to the petroleum gas energy, the exploitation of land resources can not meet existing oil supply, offshore oil exploration and exploitation are very urgent, various novel marine settings continues to bring out under the new situation at this, drill ship and all kinds of drilling platforms as the main product of offshore drilling equipment also in constantly development and innovation.Moon pool, as the requisite version of offshore drilling platform, is normally in the middle part of platform, and its structure is the vertical channel of the up/down perforation platform from the straight-through bottom of train wheel bridge, and drilling equipment and pipeline carry out mud oil through vertical channel.Directly contacting owing to mesa base moon pool inwall flows with wave, the whirlpool that moon pool front end produces carries to the back-end, encounters during moon pool rear wall hindered, it is returned to inside moon pool, causing fluid rolling in moon pool, moon pool rear wall is relatively big compared with the pressure of antetheca, thus produces resistance；Simultaneously under the effect of stormy waves stream, upper and lower " piston " that in moon pool, free surface can be formed along moon pool depth direction moves and " rocking " motion of horizontal direction, moon pool inwall and deck are impacted, thus affect main platform body athletic posture in the seawater, Jobs on the sea and rest environment are caused and have a strong impact on.
At present, in order to tackle the adverse effect produced by moon pool, general employing is added additament at moon pool inwall or bottom and sets up portable plate to be opened/closed in moon pool, these measures can alleviate some resistance to a certain extent, but owing to needing the drag effects under the different operating mode of reply when platform at sea works, existing technical scheme can not fully meet the requirement of moon pool structure drag reduction, and for movable opening-closing plate, the general motion using hydraulic cylinder push-pull fashion to drive plate, hydraulic cylinder device is easily by immersion corrosion in seawater, add seal requirement and also bring operational inconvenience simultaneously.
For platform structure, during towage, first at the forward position of moon pool, whirlpool is produced owing to flowing, this whirlpool gradually develops, and moves at the tailing edge of moon pool, when arriving at moon pool tailing edge, a big whirlpool occupying moon pool inner most space will be formed, the forward position of moon pool continues to produce whirlpool afterwards, and constantly repeats this process, forms whirlpool reaction；Simultaneously because shallower draft, in moon pool, liquid level is relatively low, and with direction of motion side antetheca apparently higher than rear wall, easily produce horizontal direction in moon pool rocks effect；And when platform operations, drinking water increases, in moon pool, liquid level increases, and is easily producing upper and lower oscillating movement along moon pool depth direction.With platform liquid level form in moon pool under different conditions, design a kind of can reduction and rock and vibrate and can contain that the moon pool structure of whirlpool is just particularly important.
Utility model content
The purpose of this utility model be to provide one can effectively suppress horizontal direction in moon pool rock with vertical direction vibration, make whirlpool be formed to minimize, alleviate sea water platform is impacted, it is ensured that platform is the device of normal table work under various operating modes.
In order to achieve the above object, this utility model be the technical scheme is that
A kind of platform moon pool damping device, described platform moon pool is arranged in the middle part of platform, and it is the most parallel longitudinal with platform；Including be arranged on moon pool two ends transverse inner wall and vibration damping cabin the most arranged vertically and subtract rolling cabin, described vibration damping cabin and subtract rolling cabin between separated by watertight dividing plate；Vibration damping wall out of my cabin shakes the damping block that is interspersed of the most horizontal several row of horizontal directions of outer wall, bottom, cabin with subtracting, subtract rolling bottom, cabin outer wall and fix the several gear wave posts wide with moon pool of connection, subtract rolling bottom, cabin and be provided with perpendicular outer wall, middle part is above does not set perpendicular outer wall, subtract three layers of dividing plate setting up and down in rolling cabin, the vertical Wave-dissipating block of what dividing plate upper and lower sides and bilge inwall horizontal number row were interspersed, dividing plate arranges the most corresponding wedge type block towards the outer end of platform moon pool；The horizontal baffle being fixedly secured to one another and vertical wallboard are set in cabin, vibration damping cabin, being respectively equipped with several rectangular apertures being parallel to moon pool width on described vibration damping wall out of my cabin and vertical wallboard, in vibration damping cabin, on moon pool inwall and vertical wallboard, horizontal number arranges the vertical horizontal Wave-dissipating block being interspersed.
The purpose of this utility model can also be realized further by techniques below measure.
Aforesaid platform moon pool damping device, spacing a=0.5m of wherein said horizontal Wave-dissipating block～1m, horizontal inclined angle alpha=10 °, Wave-dissipating block inclined-plane～30 °, the ratio b:c=1.5～3 of long limit b and minor face c.
Aforesaid platform moon pool damping device, the section form of wherein said gear wave post is semicircle, and three gear wave column radius successively decrease, and be spaced and the most horizontal is subtracting rolling cabin bottom outer wall, the ratio radius R1:R2:R3=5:3:1 of the radiuses of three unrestrained posts of gear.
Aforesaid platform moon pool damping device, wherein said damping block is outer little interior big bucket shape damping block, subtract and shake the bucket shape damping block that horizontal four rows self are interspersed altogether up and down of wall and bottom, vibration damping cabin outer wall out of my cabin, horizontal spacing s=0.2m～0.6m of bucket shape damping block, the upper and lower surface of bucket shape damping block is square, side ratio m:n=2:1.
Aforesaid platform moon pool damping device, wedge angle β=45 ° of wherein said wedge type block～75 °.
This utility model simple in construction, the vibration damping cabin arranged in moon pool transverse inner wall with subtract rolling cabin, it is ensured that platform is the work of safety and stability under different operating modes.Subtracting the gear wave post that rolling bottom, cabin outer wall is uniformly arranged, it is possible to effectively keep out the impact flowed, weaken the kinetic energy of wave, induction flows to moon pool bottom motion, the formation of whirlpool in reduction moon pool.Subtract the bucket shape damping block shaken on wall and vibration damping wall out of my cabin out of my cabin, it is possible to reducing the viscous effect of inwall upper fluid and Gu Bi, reduce viscous drag, the distribution of alternating expression simultaneously can contain that whirlpool reacts further.During platform towage operating mode, moon pool interior draft is shallower, and liquid level is subtracting rolling region, cabin, subtracts to shake and is horizontally staggered the Wave-dissipating block of layout in cabin and can effectively stop that sea water does front-rear reciprocation movement in moon pool, thus reduces and rock effect in moon pool；During platform operations, main platform body declines, and drinking water increases, and in moon pool, liquid level is in region, vibration damping cabin, subtracts and shakes the Wave-dissipating block of vertical interlaced arrangement in cabin and can effectively stop that sea water does upper and lower telescopic oscillating movement in moon pool.
Advantage of the present utility model and feature, by for illustration and explanation by the non-limitative illustration of preferred embodiment below.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of this utility model combination type moon pool damping device；
Fig. 2 is the top view of combination type moon pool damping device；
Fig. 3 is Fig. 1 partial view at A；
Fig. 4 is I enlarged drawing of Fig. 1；
Fig. 5 is II stereo amplification figure of Fig. 1；
Fig. 6 is III stereo amplification figure of Fig. 1；
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As shown in Fig. 1～Fig. 6, the present embodiment includes being arranged on moon pool two ends transverse inner wall 10 and vibration damping cabin 1 the most arranged vertically and subtracts rolling cabin 2, and vibration damping cabin 1 and subtracting is separated by watertight dividing plate 3 between rolling cabin 2.Vibration damping wall 11 out of my cabin arranges, with subtracting the most horizontal number of rolling bottom, cabin outer wall 21, the damping block 4 being interspersed, subtract rolling bottom, cabin outer wall 21 4 gear wave posts 5 wide with moon pool of fixing connection, subtract more than in the middle part of rolling cabin and do not set perpendicular outer wall, subtract three layers of dividing plate 22 setting up and down in rolling cabin 2, what dividing plate 22 upper and lower sides and the horizontal 8 row of horizontal directions of bilge inwall 23 were interspersed vertical Wave-dissipating block 6, rock before and after reducing moon pool maritime interior waters horizontal direction, effectively stop and move back and forth before and after sea water is in moon pool, thus reduce and rock effect in moon pool.Dividing plate 22 arranges the most corresponding wedge type block 7 towards the outer end of platform moon pool.Horizontal baffle 12 and the vertical wallboard 13 of fixing connection are set in cabin, vibration damping cabin 1, several rectangular apertures 131 being parallel to moon pool width it are respectively equipped with on vibration damping wall 11 out of my cabin and vertical wallboard 13, sea water enters in vibration damping cabin 1 from rectangular aperture 131, by the drag reduction effect of Wave-dissipating block 8 horizontal in cabin.In vibration damping cabin 1, on moon pool inwall 10 and vertical wallboard 13, horizontal number arranges the vertical horizontal Wave-dissipating block 8 being interspersed, and can reduce the vertical vibration of moon pool maritime interior waters, effectively stops the oscillating movement that sea water is flexible up and down in moon pool.
As shown in Figure 4 and Figure 5, spacing a=0.5m of horizontal Wave-dissipating block 8～1m, horizontal inclined angle alpha=10 °, Wave-dissipating block 8 inclined-plane～30 °, the ratio b:c=1.5～3 of long limit b and minor face c.
As it is shown in figure 1, the section form of gear wave post 5 is semicircle, the decreasing radius of three gear wave posts 5, be spaced and the most horizontal subtracting rolling bottom, cabin outer wall 21, the ratio R1:R2:R3=5:3:1 of the radiuses of three unrestrained posts 5 of gear.Can effectively weaken the impact of wave, reduce kinetic energy of wave.
As shown in Figure 6, wedge angle β=45 ° of wedge type block 7～75 °, can play cushioning effect to wave, extenuate the impact of Wave-dissipating block in cabin；
As shown in Figure 5, damping block 4 is outer little interior big bucket shape damping block, subtract and shake wall 11 and bottom, vibration damping cabin outer wall about the 21 bucket shape damping block that horizontal four rows self are interspersed altogether out of my cabin, horizontal spacing s=0.2m～0.6m of bucket shape damping block, the upper and lower surface of bucket shape damping block is square, side ratio m:n=2:1.Can effectively contain that the formation of whirlpool reduces viscous drag in moon pool simultaneously, prevent wave from climbing on reduction wave overflow arrival Platform Deck 9.
During platform towage, moon pool interior draft is shallower, and liquid level is subtracting rolling region, cabin, subtracts to shake and is horizontally staggered the vertical Wave-dissipating block 5 of layout in cabin 2 and can effectively stop and move back and forth before and after sea water is in moon pool, thus reduces and rock effect in moon pool；During platform operations, main platform body declines, and drinking water increases, and in moon pool, liquid level is in region, vibration damping cabin 1, subtracts and shakes the horizontal Wave-dissipating block 7 of vertical interlaced arrangement in cabin 2 and can effectively stop that sea water does upper and lower telescopic oscillating movement in moon pool.
In addition to the implementation, this utility model can also have the technical scheme that other embodiments, all employing equivalents or equivalent transformation are formed, and all falls within the protection domain of this utility model requirement.
Claims (5)
1. a platform moon pool damping device, described platform moon pool is arranged in the middle part of platform, and it is the most parallel longitudinal with platform；It is characterized in that, including be arranged on moon pool two ends transverse inner wall and vibration damping cabin the most arranged vertically and subtract rolling cabin, described vibration damping cabin and subtract rolling cabin between separated by watertight dividing plate；Vibration damping wall out of my cabin arranges, with subtracting rolling bottom, the cabin the most horizontal number of outer wall, the damping block being interspersed, subtract rolling bottom, cabin outer wall and fix the several gear wave posts wide with moon pool of connection, subtract rolling bottom, cabin and be provided with perpendicular outer wall, middle part is above does not set perpendicular outer wall, subtract three layers of dividing plate setting up and down in rolling cabin, the vertical Wave-dissipating block of what dividing plate upper and lower sides and the horizontal several row of horizontal directions of bilge inwall were interspersed, dividing plate arranges the most corresponding wedge type block towards the outer end of platform moon pool；The horizontal baffle being fixedly secured to one another and vertical wallboard are set in cabin, vibration damping cabin, being respectively equipped with several rectangular apertures being parallel to moon pool width on described vibration damping wall out of my cabin and vertical wallboard, in vibration damping cabin, on moon pool inwall and vertical wallboard, horizontal number arranges the vertical horizontal Wave-dissipating block being interspersed.
2. platform moon pool damping device as claimed in claim 1, is characterized in that, the spacing a=0.5m ~ 1m of described horizontal Wave-dissipating block, inclined angle alpha=10 ° ~ 30 °, horizontal Wave-dissipating block inclined-plane, ratio b:c=1.5 ~ 3 of long limit b and minor face c.
3. platform moon pool damping device as claimed in claim 1, it is characterized in that, the section form of described gear wave post is semicircle, the decreasing radius of three gear wave posts, it is spaced and the most horizontal is subtracting rolling cabin bottom outer wall, the ratio R1:R2:R3=5:3:1 of the radiuses of three gear wave posts.
4. platform moon pool damping device as claimed in claim 1, it is characterized in that, described damping block is outer little interior big bucket shape damping block, subtract and shake the bucket shape damping block that horizontal four rows self are interspersed altogether up and down of wall and bottom, vibration damping cabin outer wall out of my cabin, horizontal spacing s=0.2m ~ the 0.6m of bucket shape damping block, the upper and lower surface of bucket shape damping block is square, side ratio m:n=2:1.
5. platform moon pool damping device as claimed in claim 1, is characterized in that, wedge angle β=45 ° ~ 75 ° of described wedge type block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031701.8U CN205589429U (en) | 2015-12-14 | 2015-12-14 | Platform moon pool fairing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031701.8U CN205589429U (en) | 2015-12-14 | 2015-12-14 | Platform moon pool fairing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205589429U true CN205589429U (en) | 2016-09-21 |
Family
ID=56926712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521031701.8U Withdrawn - After Issue CN205589429U (en) | 2015-12-14 | 2015-12-14 | Platform moon pool fairing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205589429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416521A (en) * | 2015-12-14 | 2016-03-23 | 江苏科技大学 | Platform moon pool damping device |
-
2015
- 2015-12-14 CN CN201521031701.8U patent/CN205589429U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416521A (en) * | 2015-12-14 | 2016-03-23 | 江苏科技大学 | Platform moon pool damping device |
| CN105416521B (en) * | 2015-12-14 | 2017-06-23 | 江苏科技大学 | Platform moon pool damping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160921 Effective date of abandoning: 20170623 |