CN108820148A - Semi-submerged platform and its lower floating body - Google Patents
Semi-submerged platform and its lower floating body Download PDFInfo
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- CN108820148A CN108820148A CN201810644461.0A CN201810644461A CN108820148A CN 108820148 A CN108820148 A CN 108820148A CN 201810644461 A CN201810644461 A CN 201810644461A CN 108820148 A CN108820148 A CN 108820148A
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Abstract
The present invention provides a kind of semi-submerged platform and its lower floating bodies.The lower floating body includes two bow stern sections and an interlude, and two bow stern sections are connected to the both ends of interlude longitudinal direction；Bow stern section is the structure tapered by middle part to both ends width in the longitudinal direction, and for the maximum width of bow stern section by curved surface rounding off to outer end, the outer contour of maximum width to the outside end of bow stern section is semiellipse；By elliptic arc and at least one section of indent arc smooth transition is connect the maximum width of bow stern section with interlude, and elliptic arc is connected and on the same ellipse with semiellipse, and the maximum width of bow stern section is elliptical short axle；The maximum width of interlude is less than the maximum width of bow stern section.The present invention uses the lower floating body of streamlined structure, advantageously reduces the towage of semi-submerged platform and from boat resistance, reduces the fuel consumption of platform host or tugboat host, thereby reduce operating cost.Further, the present invention can also improve platform heaving performance.
Description
It is on April 13rd, 2015 that the present invention, which is the applying date, entitled " partly latent flat application No. is 2015101707387
The divisional application of the Chinese invention patent application of platform and its lower floating body "；Enjoying the applying date is on 2 2nd, 2015, application No. is
201510053492.5, the priority of the Chinese invention patent application of entitled " middle deep water semi-submersible ocean platform ".
Technical field
The present invention relates to field of ocean engineering, are related to a kind of floating type offshore structures, more particularly, to one kind
It is suitble to the semi-submerged platform and its lower floating body in middle deep water sea area operation.
Background technique
It is well known that petroleum resources are the power producers of modern industry, with the increasingly poor of landing field petroleum resources, sea
The exploration and development of foreign petroleum resources is utilized and is constantly rapidly developed in recent years, in great demand so as to cause ocean engineering amount,
In particular with ocean engineering from shallow water trend gradually deep water, middle deep water offshore engineering equipment such as semisubmersible drilling platform,
The offshore equipments products such as semi-submersible offshore accommodation platform, semi-submersible offshore lifting platform obtain pursuing for the major shipyard in the world, competing
Strive fierceness.
For common semisubmersible platform, a floating body usually is respectively set (also referred to as in the port and starboard of pontoon
Floating drum), to whole buoyancy needed for being provided for whole semisubmersible platform；The setting of two lower big spacing of floating body is flat in semi-submersible type
The left and right sides of platform prevents rolling amplitude excessive, guarantees the whole stability of semisubmersible platform；It is deposited certainly cruelly in working condition or wind resistance
When operating condition, lower floating body is submerged in completely in the seawater of b.s.l., while providing overall buoyancy for semisubmersible platform, is prevented
The appearance for the unfavorable problems such as wave exciting force amplitude is excessive.The horizontal section of common lower floating body is the rectangle that there is circular arc in quadrangle,
Reduce ship resistance and drag of the semisubmersible platform when from navigation (or towing voyage) operating condition, but the lower floating body of this shape
In terms of resistance and heaving aspect of performance still has improved space.
Summary of the invention
The purpose of the present invention, which first consists in, provides a kind of semi-submerged platform and its lower floating body, and it is flat to solve semi-submersible type in the prior art
Platform excessive problem of resistance in running working condition.
Further, the present invention also improves the heaving performance of semi-submerged platform.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
According to an aspect of the present invention, the present invention provides a kind of lower floating body of semi-submerged platform, and the lower floating body includes two
A bow stern section and an interlude, two bow stern sections are connected to the both ends of interlude longitudinal direction；The bow stern section is in the longitudinal direction
Maximum width for the structure tapered by middle part to both ends width, bow stern section passes through curved surface rounding off to outer end, bow stern section
Maximum width to outside end outer contour be semiellipse；The maximum width of bow stern section passes through ellipse with the interlude
Circular arc is connected at least one section of indent arc smooth transition, and the elliptic arc is connected and in the same ellipse with the semiellipse
On, the maximum width of the bow stern section is the elliptical short axle；The maximum width of the interlude is less than the maximum of bow stern section
Width.
Preferably, the bow stern section and the interlude are symmetrical both with respect to own longitudinal axis, and bow stern section is symmetrical arranged
At the both ends of interlude, and the longitudinal axes coincident of bow stern section and interlude.
Preferably, the interlude is wide to the other end by one end.
Preferably, the ratio of the width of the interlude and the maximum width of the bow stern section is 0.60-0.75.
Preferably, the ratio of the width of the interlude and the maximum width of the bow stern section is 0.62-0.7.
Preferably, the ratio of the axial length of the interlude and the axial length of the bow stern section is 0.4-0.5.
Preferably, the maximum width of the bow stern section to the bow stern section and the interlude junction axial distance with
The ratio of the maximum width of bow stern section is 1.05-1.15.
Preferably, the ratio of the axial length and maximum width of the bow stern section is 2-2.2.
Preferably, the ratio of maximum width of the maximum width of the bow stern section away from the distance of outside end and bow stern section
For 1-1.2.
According to another aspect of the present invention, the present invention also provides a kind of semi-submerged platforms, including descend floating body as described above.
As shown from the above technical solution, the present invention at least has the following advantages that and good effect：In the present invention, semi-submerged platform
The bow stern section of lower floating body is passed through curved surface rounding off to outside end and interlude respectively by maximum width in the longitudinal direction, is floated downward
The outer contour of body is round and smooth curve, and this streamlined structure advantageously reduces the towage of semi-submerged platform and the resistance that navigates certainly,
From when navigation or towing voyage operating condition, the fuel consumption of platform host or tugboat host is reduced, operating cost is thereby reduced.
Further, the central axis of the bow stern section of lower floating body and interlude is overlapped, lower floating body bilateral symmetry, for using
For the semi-submerged platform of the lower floating body, heaving response amplitude operator can be made to be minimized, further improve platform
Heaving performance, to prevent wave exciting force and the appearance for the unfavorable problems such as amplitude is excessive, make semi-submerged platform can operation sea area
It is further expanded, is completely suitable for each severe sea area, still is able to guarantee under more atrocious weather and sea conditions
The standpipe reliably working being connected thereto thereby reduces oil gas drilling exploitation period and operating cost.
Detailed description of the invention
Fig. 1 is the side structure schematic diagram of semi-submerged platform preferred embodiment of the present invention.
Fig. 2 is the left view of Fig. 1 of the present invention, i.e. the stern structure schematic diagram of semi-submerged platform.
Fig. 3 is the A-A view of Fig. 1 of the present invention.
Fig. 4 is that internal ship cabin arrangement schematic diagram is floated downward in semi-submerged platform preferred embodiment of the present invention.
Fig. 5 is the arrangement schematic diagram that crucial liquid tank in vivo is floated downward in semi-submerged platform preferred embodiment of the present invention.
Fig. 6 is the B-B view of Fig. 1 of the present invention.
Fig. 7 is the structural schematic diagram of another preferred embodiment of floating body under the present invention.
The reference numerals are as follows：1, lower floating body；101, outside plate；11, bow stern section；111, outer end；12, interlude；14, cabin
Room；14a, crucial liquid tank；14b, cabin；141, bulkhead plate；141a, inner hull；141b, bulkhead plate；2, column；201, longitudinal outer
Plate；202, lateral outside plate；21, fillet；22, protrusion；3, main hull；31, larboard outside plate；32, starboard outside plate；33, main first
Plate；331, extension；34, deck；35, lower decks；4, stull；5, goods tank.
Specific embodiment
The exemplary embodiment for embodying feature of present invention and advantage will describe in detail in the following description.It should be understood that
The present invention can have various variations in different embodiments, neither depart from the scope of the present invention, and theory therein
Bright and diagram inherently is illustrated as being used, rather than to limit the present invention.
The present invention provides a kind of semi-submerged platform and its lower floating body being suitble in middle deep water sea area operation, which can be with
Oil-gas mining operation is carried out as drilling platforms, at 80 meters -1500 meters or so, changing load exists this kind of working platform depth of water
5000-6000 tons or so.More preferably, it is that 0-32 is Celsius that ocean temperature range is allowed when semi-submerged platform operation provided by the present invention
Degree, operation are that ambient air temperature range is allowed to be negative positive 35 degrees Celsius of 7-, can be in the sea areas operation such as U.K. North Sea.
Unless otherwise instructed, hereafter involved in " longitudinal direction " using the length direction of semi-submerged platform as reference, accordingly, half
The both ends of latent platform longitudinal direction are referred to as fore body and stern；" transverse direction " using the width direction of semi-submerged platform as reference, accordingly,
The two sides of semi-submerged platform transverse direction are referred to as port and starboard.In addition, the length direction of lower floating body and the length side of semi-submerged platform
To consistent.
Refering to fig. 1 and Fig. 2, the semi-submerged platform of the present embodiment mainly include two lower floating bodies 1, are vertically arranged at lower floating body 1
On four columns 2, and the main hull 3 being supported on column 2.Lower floating body 1 extends longitudinally, and two lower floating bodies 1 are symmetrically
It is respectively in port and starboard, two lower 1 parallel interval of floating body arrangements.The lower end of four columns 2 is separately positioned on two lower floating bodies 1
Fore body and stern are also connected with stull 4, the upper end support of four columns 2 between the two opposite columns 2 of port and starboard
Main hull 3.
Main hull 3 is in square box-structure, arranges types of functionality device according to actual needs thereon.2 pairs of main ships of column
The overall weight of body 3 is supported.Working condition or wind resistance cruelly from deposit operating condition when, lower floating body 1 be submerged in completely sea level with
Under seawater in, main purpose is overall buoyancy to be provided for semi-submerged platform, and bear environmental load, service weight and Light Weight
Amount.Semi-submerged platform setting there are four propeller (not shown), four propellers be located at two lower 1 fore bodies of floating body and
The bottom of stern, each propeller is all-direction propeller, and is equipped with the dynamic positioning system of adaptation, is led in towing operation operating condition
Cross towing hawser transmitting pulling force.The propeller negligible amounts of semi-submerged platform setting, thus correspondingly simplify matched control
System
In conjunction with Fig. 1 and Fig. 3, lower floating body 1 includes two bow stern sections 11 and an interlude 12, and two bow stern sections 11 are made respectively
For the fore body and stern of lower floating body 1, two bow stern sections 11 are connected to the longitudinal both ends of interlude 12.Lower floating body 1 is vertical
It is cylinder on direction, the upper and lower surfaces of lower floating body 1 are plane, and the side of lower floating body 1 is then vertical curved surface, upper table
Face, the lower surface round-corner transition between side respectively.From lower 1 top view of floating body shown in Fig. 3, bow stern section 11 is in the longitudinal direction
Outer contour for the structure tapered by middle part to both ends width, bow stern section 11 is arc, is made of multi-section circular arc or elliptic arc.
The maximum width of bow stern section 11 passes through one end that curved surface rounding off to outer end 111 is separate interlude 12, and 111 end of outer end
Arc surface is also formed at portion, i.e. the two sides of bow stern section 11 are connected in 111 end of outer end by arc surface transition.Bow stern section 11
Maximum width also curved surface rounding off is connect with interlude 12, the maximum width of interlude 12 is less than bow stern section 11
Maximum width.
It looks up from vertical, lower floating body 1 is since the cambered surface of end, and width is increased by small gradually rounding off, then again gradually
Rounding off reduces, and rounding off reduces again after finally gradually rounding off increases, and forms cambered surface again in the other end.Lower floating body
1 is integrally formed bone rod type structure, and lower 1 outer profile of floating body is streamlined, leads to turning when can reduce using straight line connection structure
Locate streamline change dramatically, generate the factors such as whirlpool and caused by resistance coefficient increase, when improving fluid by lower 1 region of floating body
Fluid motion characteristics, which is conducive to reduce the towage of platform and from boat resistance, and then reduces host fuel consumption and operation
Cost.
Further, for individually descending floating body 1, using the structure type that left and right is full symmetric, lower floating body 1 is vertical relative to it
It is symmetrical to center line and cross central line.I.e.：Bow stern section 11 and interlude 12 are symmetrical both with respect to own longitudinal axis, and two
Bow stern section 11 is symmetricly set on the both ends of interlude 12, the longitudinal axes coincident of bow stern section 11 and interlude 12.It may make in this way
Heaving response amplitude operator is minimized, so as to the appearance for the unfavorable problem such as prevent wave exciting force amplitude excessive, into one
Step improves heaving response performance, at the same using the semi-submerged platform of the lower floating body can operation sea area also extended, can
Suitable for each severe sea area, the reliable work of standpipe for guaranteeing to be connected thereto still is able under more atrocious weather and sea conditions
Make, thereby reduces oil gas drilling exploitation period and operating cost.
In lower floating body 1, interlude 12 is wide from one end to the other end, i.e. the width W of interlude 1212It is constant, more preferably, in
Between section 12 width W12With the maximum width W of bow stern section 1111Ratio be more preferably 0.60-0.75, more preferably, be 0.62-
0.7.In the structure of this ratio, it can make to float downward body with lower heaving response amplitude operator, more improve
Semi-submerged platform heaving response performance.With the width W of interlude 1212With the maximum width W of bow stern section 1111Ratio be equal to
For 0.62, for vertical stress is compared with routine techniques floating body, vertical stress has 25% to 40% in typical period range
Amount of decrease, corresponding heaving response have 20% to 35% amount of decrease.In one embodiment, the maximum width W of bow stern section 1111For
19m-21m, the width W of interlude 1212For 13m-15m.
The length L of interlude 1212With the axial length L of bow stern section 1111Ratio be more preferably 0.4-0.5, more preferably,
It is 0.45.Wherein, " axial length " refers to the length of axis along longitudinal direction, similarly hereinafter.
The maximum width of bow stern section 11 to the bow stern section 11 and the junction of interlude 12 axial distance L112With bow stern
The maximum width W of section 1111Ratio be more preferably 1.05-1.15, more preferably, be 1.1.
The axial length L of bow stern section 1111With maximum width W11Ratio be more preferably 2-2.2, more preferably, be 2.1.
Distance L of the maximum width of bow stern section 11 away from 111 end of outer end111With the maximum width W of bow stern section 1111Ratio
Example is more preferably 1-1.2, L111Numerical value be more preferably 20m-25m.
From Fig. 3, in the present embodiment, the maximum width of bow stern section 11 is round and smooth by multi-section circular arc to 111 end of outer end
Transition.Each section of circular arc is evagination circular arc, more preferably, in the maximum width from bow stern section 11 toward on 111 direction of outer end, each section
The radius of circular arc is gradually reduced.And the radius R of the 111 end arc surface of outer end of bow stern section 11111With the maximum width of bow stern section 11
W11Ratio be more preferably 0.2-0.3, more preferably, be 0.26.Radius R111Numberical range can be in 5.2m or so.
Be sequentially connected equally from Fig. 3, between the maximum width and interlude 12 of bow stern section 11 by multi-section circular arc and
Curved surface rounding off is formed, from the maximum width of bow stern section 11, which includes outside at least two sections successively to connect
Concave arc in dome arc and at least two sections, on from the maximum width of bow stern section 11 toward the direction of interlude 12, each outer dome
The radius of arc is gradually big, and the radius of each interior concave arc is gradually small.The radius distance value range of each section of circular arc is more preferably 20m-51m.
This structure type of bow stern section 11 keeps lower 1 Each part change in shape of floating body smooth, when so that fluid passing through
With good kinetic characteristic.
Wherein, the following floating body 1 of inward-outward direction of above-mentioned " evagination circular arc " and " interior concave arc " is reference, outer finger circular arc
For projection direction towards 1 outside of lower floating body, indent refers to the projection direction of circular arc towards lower 1 inside of floating body.
It, can be by the resistance of lower floating body 1 by lower 1 each section shape of floating body and the special designing of dimensional parameters in the present invention
Force coefficient controls between 0.005-0.01, compared with prior art common 0.015-0.024, and structure of the invention has obvious
Advantage.
Refering to Fig. 4, multiple cabins 14 are separated to form in lower floating body 1, these cabins 14 are substantially pushed away according to function distinguishing
Into device cabin, ballast tank, pump room, fresh-water tank, salt water tank, slurry cabin, drilling well water tank, fuel oil tank, pass through bulkhead plate between cabin 14
141 are mutually separated.More preferably, it for the crucial liquid tank of part in these cabins 14, is protected using double Shell, for convenient for bright
Show, the label of these crucial liquid tanks is designated as 14a in figure, these keys liquid tank 14a may include fresh-water tank, salt water tank and mud
Starch cabin etc..
Specifically, as shown in figure 5, these key liquid tank 14a have the inner hull with the outside plate 101 of lower floating body 1 separately
The outside plate 101 of 141a, inner hull 141a and lower floating body 1 collectively forms the double Shell of key liquid tank 14a.Wherein, lower floating body 1
Outside plate 101 refer to each structural slab as lower 1 surface layer of floating body.Profile is set again outside the inner hull 141a of each key liquid tank 14a
Profile structure is no longer arranged in crucial liquid tank 14a in structure (not shown).By the protection of double Shell, floating body 1 is met instantly
To after accident collision breakage, due to having one between the inner hull 141a of these crucial liquid tank 14a and the outside plate 101 of lower floating body 1
Fixed gap reduces a possibility that outside plate 101 and inner hull 141a are damaged simultaneously, so that a possibility that liquid leakage occurs can be with
It substantially reduces.
For fresh-water tank, since the fresh water in fresh-water tank is commonly used in the daily drinking and life of operating personnel on platform
Water is applied flexibly, can all have profile structure in the fresh-water tank cabin of non-Double Hull Protection, due to the particular/special requirement that is coated with of fresh-water tank, profile
It is also required to carry out coating in structure, after designing using Double Hull Protection, without profile structure in fresh-water tank, correspondingly reduces coating
Area reduces the work difficulty and workload of painting operation, while being also beneficial to the cleaning in cabin in cabin without profile.Together
After sample salt water tank and slurry cabin setting Double Hull Protection, profile is respectively positioned on other than liquid tank inner hull, and being designed using Double Hull Protection is reduced
The probability of environment, while the cleaning in more conducively cabin are polluted after leakage, improve the efficiency of construction of ocean engineering.
In embodiment shown in Fig. 4, set in lower floating body 1 there are four with double Shell crucial liquid tank 14a, four keys
Liquid tank 14a is symmetrically distributed in the bow stern section 11 of lower floating body 1, and this four key liquid tank 14a are close to the interlude of lower floating body 1
12。
Together refering to fig. 1 to Fig. 3, the substantially rectangular column structure of 2 shape of column, cross section is the square with fillet
Shape, 2 outside plate of column include two opposite longitudinal outside plates 201 and two opposite lateral outside plates 202, longitudinal outside plate 201 with it is horizontal
To setting fillet 21 between outside plate 202.2 lower end of column is set to the central region of the bow stern section 11 of lower floating body 1,2 lower end of column
Width W2That is the distance between two longitudinal outside plates 201 of column 2 are less than the width of bow stern section 11 at its region, i.e.,：It is vertical
Column 2 and lower floating body 1 use the connection type of non-alignment formula.
Further, 2 lower end of column is inserted into lower floating body 1, as shown in figure 4, corresponding to the installation of column 2 in lower floating body 1
Place is equipped with independent cabin 14b, and the bulkhead plate 141b of the independent cabin 14b and the outside plate 201,202 of column 2 form integral structure.
By this connection type, more complete and reasonable structural configuration is formed, so that as the important section of platform hull structure
The column 2 of point shows with the unstressed concentration in lower 1 junction of floating body, and fatigue damage problem is also accordingly easier to be addressed, and mentions
The high safety of platform oil producing operation under atrocious weather and sea conditions.
As a preferably embodiment, the goods tank 5 which is carried can be arranged in each column 2.
Multiple goods tanks 5 of semi-submerged platform can be evenly distributed in four columns 2, as shown in figure 3, as an example, semi-submerged platform is total
When with 12 goods tanks 5,3 goods tanks 5 are arranged in each column 2.For drilling platforms, need to carry by goods tank 5
A large amount of bored material, such as barite, native powder, cement, total weight is often beyond a kiloton.Goods tank 5 is arranged in column 2
It is interior, the area of space inside column 2 can be made to be fully utilized, avoid occupying more nervous floor space, same to phase
For the situation being installed on goods tank 5 inside deck plane or main hull 3, the integral central that this arrangement reduces platform is high
Degree, to improve platform stability advantageously.
Wherein, support construction (not shown), support construction and column 2 are respectively designed in the top and bottom end of goods tank 5
Outside plate 201 or interior bulkhead are connected, while support construction bears the gravity caused by vertical direction of goods tank 5 and platform occurs
Generated component when rolling or pitching.
It is supported, in the present embodiment, column 2 and main hull 3 to main hull 3 with Fig. 2, the upper end of column 2 refering to fig. 1
It also is the connection type of non-alignment.Refering to Fig. 6, the distance between the port and starboard outside plate 31,32 of main hull 3 W3Less than port and starboard
Two columns 2 of i.e. port and starboard are located at the distance between longitudinal outside plate 201 in outside D between the outer surface of two columns 22, so that
2 upper end of column has the protrusion 22 of the larboard outside plate 31 or starboard outside plate 32 that protrude from main hull 3.Positioned at two of larboard
The left part of column 2 protrudes from the larboard outside plate 31 of main hull 3, and the right part positioned at two columns 2 of starboard protrudes from
The starboard outside plate 32 of main hull 3.Wherein, larboard outside plate 31 and starboard outside plate 32 are 3 square box-structure of main hull or so two
The outside plate of side, larboard outside plate 31 and starboard outside plate 32 are vertically arranged and extend longitudinally.
For the square box main hull 3 of same volume and size, in the present embodiment, the column 2 of port and starboard
The semi-submerged platform of the relative distance ratio prior art is big, can improve the whole stability of platform in this way, in same weather and sea situation
Under the conditions of, reduce the angle amplitude that heel occurs for hull, while platform also proposes the applicability of bad weather and sea situation
It is high.In one preferably embodiment, the distance between two lower 1 longitudinal axis of floating body are 60m-66m, are had between two lower floating bodies 1
There is biggish spacing, so that the column 2 of port and starboard has relatively large distance, improves the stability of platform.
Further, referring to Fig.2, column 2 protrudes from the protrusion 22 of 3 larboard outside plate 31 of main hull or starboard outside plate 32
It from bottom to top extends at the main deck 33 of main hull 3, is reliably connected as an entirety with main hull 3.Column 2 and main hull
It does not need to extend connecting node anti-fatigue life using the additional method for increasing the sub-assembly of hull structure such as bracket and improve between 3 to bear
Stress performance.And with the protrusion 22 of each column 2 correspondingly, the main deck 33 of main hull 3 is set there are four relative to main ship
3 larboard outside plate 31 of body or the extension 331 outstanding of starboard outside plate 32, each extension 331 cover the protrusion 22 of corresponding column 2
Upper end.
More preferably, it is respectively arranged ground tackle (not shown) on this four extensions 331 of main deck 33, sufficiently benefit
With the area of main deck 33, and the structural advantage of 3 larboard of main hull or starboard is rationally protruded from using extension 331.
The square box-structure of main hull 3 provides the arrangement demand of each function device of semi-submerged platform, and main hull 3 passes through
From bottom to top the multidecks such as horizontally disposed lower decks 35, deck 34, main deck 33 separate multilayer space, realize different
The subregion of functional cabin.As shown in Figure 1, the bow side outside plate and stern side outside plate of main hull 3 without departing from the bow stern section 11 of lower floating body 1 outside
111 ends are held, can make platform that there is preferable stability, bow side outside plate and stern side outside plate are vertically arranged and extend transversely, with a left side
Side of a ship outside plate 31, starboard outside plate 32 together constitute with four cycle side plates of main hull 3.
The middle part arrangement derrick and drilling equipment of main hull 3, to carry out drillng operation.
The inside of main hull 3 is equipped with the workbench that installation and folding and unfolding are delivered for underwater robot, compared with the prior art
The middle structure that robot workbench is set to main deck port and starboard, this arragement construction of the invention can make severe
Under weather and sea conditions, underwater robot still is able to reliably working, improves the economy of oil producing operation.
By setting superstructure on the main deck 33 of main hull 3, makes operator that can live wherein, handles official business and carry out auxiliary
Sex work is helped, in the Tween deck region design arrangement Emergency generator of superstructure, provides emergency for important electrical
Power supply.
Helicopter platform deck can be also arranged on main deck 33, for the landing of helicopter, to improve supply, relief and pass through
Ability, helicopter platform deck can be built in superstructure.
A lifting equipment can be respectively arranged at the port and starboard of main deck 33, be distributed overall weight when working condition
It is even.Lifting equipment includes loop wheel machine and its pedestal, and more preferably, loop wheel machine has folding boom, and loop wheel machine can be made to have abundant spirit
Working space living；It is foldable to hang for very limited main deck 33 stores working space after loop wheel machine stops operation
Arm has also saved a part of space, and thus the arrangement for other equipment provides precondition, has solution engineering specific
The practical significance of technical problem.
Level is also set up on main deck 33 put marine riser and consolidate frame and pipe memory block, for putting for all kinds of pipe fittings.
Fig. 7 illustrates the lower floating body 1s of another structure in semi-submerged platform of the present invention, in the present embodiment, lower floating body 1s's
The outer profile of bow stern section 11s is a part of ellipse.Specifically, the maximum width of bow stern section 11s is to the outer end end 111s
Outer contour be semiellipse 112s, the maximum width of bow stern section 11s passes through concave arc in elliptic arc 113s and at least one section
114s transits to interlude 12s, and elliptic arc 113s is connected with semiellipse 112s and on the same ellipse EL, elliptic arc 113s
The other end pass through interior concave arc 114s connection interlude 12s again.The maximum width W of bow stern section 11s11sFor the short axle of oval EL,
The maximum width of bow stern section 11s to the outer end end 111s distance L111sFor the half of oval EL long axis.In this structure, bow
The maximum width of stern section 11s equally respectively by curved surface rounding off to the outer end end 111s and interlude 12s, forms streamline
The bone rod-like structure of type, meanwhile, bow stern section 11s itself is symmetrical structure.The lower floating body 1s of the present embodiment can also equally reduce resistance
Force coefficient and improvement heaving performance.The dimensional parameters relationship of floating body 1s each section and other feature can refer to above under the present embodiment
The correlated characteristic of the lower floating body 1 for the first structure introduced, using the other structures feature of the semi-submerged platform of the lower floating body 1s
It can also refer to description above.
Although describing the present invention with reference to several exemplary embodiments, it is to be understood that, term used be explanation and
Term exemplary, and not restrictive.Due to the present invention can be embodied in a variety of forms without departing from invention spirit or
Essence, it should therefore be appreciated that above embodiment is not limited to any of the foregoing details, and should be defined by the appended claims
The whole change and modification widely explained, therefore fallen into claim or its equivalent scope in spirit and scope all should be with
Attached claim is covered.
Claims (10)
1. a kind of lower floating body of semi-submerged platform, it is characterised in that：
The lower floating body includes two bow stern sections and an interlude, and two bow stern sections are connected to longitudinal two of interlude
End；The bow stern section is the structure tapered by middle part to both ends width in the longitudinal direction, and the maximum width of bow stern section passes through curved surface
For rounding off to outer end, the outer contour of maximum width to the outside end of bow stern section is semiellipse；The maximum of bow stern section is wide
By elliptic arc and at least one section of indent arc smooth transition is connect with the interlude at degree, and the elliptic arc and described half
Ellipse is connected and on the same ellipse, and the maximum width of the bow stern section is the elliptical short axle；The interlude is most
Big width is less than the maximum width of bow stern section.
2. lower floating body according to claim 1, which is characterized in that the bow stern section and the interlude are both with respect to itself
Longitudinal axis is symmetrical, and bow stern section is symmetricly set on the both ends of interlude, and the longitudinal axes coincident of bow stern section and interlude.
3. lower floating body according to claim 1, which is characterized in that the interlude is wide to the other end by one end.
4. lower floating body according to claim 3, which is characterized in that the maximum of the width of the interlude and the bow stern section
The ratio of width is 0.60-0.75.
5. lower floating body according to claim 4, which is characterized in that the maximum of the width of the interlude and the bow stern section
The ratio of width is 0.62-0.7.
6. lower floating body according to claim 1, which is characterized in that the axial length of the interlude and the bow stern section
The ratio of axial length is 0.4-0.5.
7. lower floating body according to claim 1, which is characterized in that the maximum width of the bow stern section to the bow stern section with
The ratio of the maximum width of the axial distance and bow stern section of the interlude junction is 1.05-1.15.
8. lower floating body according to claim 1, which is characterized in that the axial length of the bow stern section and the ratio of maximum width
Example is 2-2.2.
9. lower floating body according to claim 1, which is characterized in that the maximum width of the bow stern section is away from outside end
The ratio of the maximum width of distance and bow stern section is 1-1.2.
10. a kind of semi-submerged platform, which is characterized in that including the described in any item lower floating bodies of such as claim 1-9.
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| CN201520205025.5U Active CN204527562U (en) | 2015-02-02 | 2015-04-07 | Semi-submersible offshore platform |
| CN201520219724.5U Withdrawn - After Issue CN204527564U (en) | 2015-02-02 | 2015-04-13 | Semi-submerged platform and lower buoyancy aid thereof |
| CN201810644461.0A Active CN108820148B (en) | 2015-02-02 | 2015-04-13 | Semi-submersible platform and lower floating body thereof |
| CN201510170739.1A Active CN106143818B (en) | 2015-02-02 | 2015-04-13 | Middle deep water semi-submersible drilling platform |
| CN201520217852.6U Withdrawn - After Issue CN204527563U (en) | 2015-02-02 | 2015-04-13 | Middle deep water semi-submersible drilling platform |
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| CN112706880A (en) * | 2021-02-05 | 2021-04-27 | 北京南风科创应用技术有限公司 | Semi-submersible unmanned self-defense power buoy |
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| WO2016124011A1 (en) * | 2015-02-02 | 2016-08-11 | 中集海洋工程研究院有限公司 | Middle depth water semi-submersible type drilling platform |
| CN106516025B (en) * | 2015-09-10 | 2021-10-08 | 中集海洋工程研究院有限公司 | Semi-submersible living platform |
| CN105151236B (en) * | 2015-09-28 | 2017-07-21 | 大连理工大学 | Floating pier and tower snorkeling movement carrying platform device and its method of work |
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| CN106915420B (en) * | 2015-12-28 | 2019-02-15 | 中国国际海运集装箱(集团)股份有限公司 | Offshore equipment and its transverse brace structure |
| CN106364633A (en) * | 2016-08-30 | 2017-02-01 | 上海交通大学 | Semi-submersible type ocean platform and implementation method of optimized heaving effect of semi-submersible type ocean platform |
| CN109110046A (en) * | 2017-06-22 | 2019-01-01 | 天津海之星船艇科技有限公司 | A kind of binary guarantee ship with first device partly latent |
| TWI624406B (en) * | 2017-08-14 | 2018-05-21 | Semi-submersible support platform and positioning method thereof | |
| CN107512363A (en) * | 2017-08-29 | 2017-12-26 | 广船国际有限公司 | A kind of mammoth tanker and its safety protecting method |
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| Publication number | Publication date |
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| CN204527559U (en) | 2015-08-05 |
| CN204527562U (en) | 2015-08-05 |
| CN204507207U (en) | 2015-07-29 |
| CN204527564U (en) | 2015-08-05 |
| CN106143817B (en) | 2018-09-18 |
| CN108820148B (en) | 2020-11-06 |
| CN204527563U (en) | 2015-08-05 |
| CN106143817A (en) | 2016-11-23 |
| CN106143818A (en) | 2016-11-23 |
| CN106143818B (en) | 2018-09-11 |
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