CN105818928B - A kind of independent liquid cargo tank and liquefied gas carrier - Google Patents
A kind of independent liquid cargo tank and liquefied gas carrier Download PDFInfo
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- CN105818928B CN105818928B CN201510005107.XA CN201510005107A CN105818928B CN 105818928 B CN105818928 B CN 105818928B CN 201510005107 A CN201510005107 A CN 201510005107A CN 105818928 B CN105818928 B CN 105818928B
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Abstract
The present invention provides a kind of independent liquid cargo tank and liquefied gas carrier, and the independent liquid cargo tank combines the advantage of ears type and cylindrical shape independent liquid cargo tank, including three cylindrical shape flow containers mutually passed through each other, forms a kind of three new ear type independent liquid cargo tanks.The maximization of volume of compartment is disclosure satisfy that compared with traditional ears type independent liquid cargo tank, hull space is better profited from, increases economic efficiency.The mutually place of passing through of each flow container is equipped with longitudinal bulkhead, and three longitudinal bulkheads are in Y types, is not only able to strengthen rigidity, the strength and stability of independent liquid cargo tank, and its size design can also effectively reduce stress concentration；The first intercommunicating pore of V-type part and the second intercommunicating pore connect the flow container of top with two flow containers difference liquid phase of lower section in Y type longitudinal bulkheads, I types part is by the liquid-tight isolation of flow container of lower section two, avoid the center of gravity tilt phenomenon that big free surface is brought, without gas phase communication apparatus is set up, the stability and Transport Safety of independent liquid cargo tank and liquefied gas carrier ensure that.
Description
Technical field
The present invention relates to a kind of ships that transport, more particularly to a kind of independent liquid cargo tank and liquefied gas carrier.
Background technology
Liquefied gas carrier is a kind of high added value ship, different according to the storage of liquefied gas and means of transportation and can substantially divide
For three classes：Full voltage type, half-cold, half pressure type and full-cool three kinds.The goods of liquefied gas ship has been loaded into the state less than normal temperature
In the independent liquid cargo tank of thermal break cladding, ship is provided with the reliquefaction installation of control cargo temperature/pressure.
Independent liquid cargo tank does not form a part for Ship Structure, can bear own wt and quiet move is born as caused by liquid goods
Lotus, there are 3 kinds of A types, Type B and c-type different types.The flow container shape of A type independent liquid cargo tanks is usually prismatic, for full-cool liquid
Change gas ship；The flow container of common Type B independent tank is spherical or prismatic；The flow container of c-type independent liquid cargo tank is generally
The sleeping tank of cylindrical shape or spherical tank.Independent liquid cargo tank can use single cylindrical shape flow container, in the prior art, in order to further utilize ship
The space of body, volume of compartment utilization rate is improved, frequently with duplex cylindrical shape flow container, that is, usually said ears type independence liquid goods
Cabin.The end socket pattern of independent liquid cargo tank is generally dome head, in order to shorten cargo tank length, it is also contemplated that using dish envelope
Head.
Liquefied gas carrier is usually to arrange type ship, and the requirement to volume of compartment is higher, and the selection of principal dimensions will be from general arrangement (cabin
Hold and arrangement status) and ship performance etc. consider, therefore both need the requirement for meeting ship, close ship cabin arrangement
Reason, makes ship have good resistance performance again.The size of independent liquid cargo tank has chosen decisive work to the principal dimensions of ship
With again the principal dimensions of ship have impact on the size of flow container, and the two mutually restricts, influenced each other.With in production and living to liquefaction
The increase of gas demand, higher requirement is proposed to the delivered payload capability of size identical liquefied gas carrier, it is true in Ship's Principal Dimensions
Under conditions of fixed, ears type independent liquid cargo tank also can not gradually meet these requirements.Therefore, it is necessary to consider a kind of new independence
The arrangement and profile of cargo tank, had both met the principal dimensions requirement of hull, and and can makes the utilization rate of volume of compartment reach optimal.
Due to the particularity of carrying liquefied gases, not only there is particular/special requirement to the carrier environments of cargo tank, while also require
Independent liquid cargo tank has enough stiffness and strengths and stability.
For traditional ears type independent liquid cargo tank, if being that liquid phase connects between two flow containers of composition ears type,
Can then there is larger free surface, in the motion process of ship, the flowing of free surface can cause liquid center of gravity to inclination
Side is moved, thus produces heeling moment, is reduced the stability of ship, is unfavorable for the security of liquefied gas carrier.If two
It is liquid-tight isolation each other between flow container, uses gas phase connection to replace liquid phase to connect, but in current designs, two flow containers
Between to realize gas phase connection then need to configure the communication apparatus such as special gas phase communicating pipe at the top of cargo tank.
The content of the invention
In view of the above the shortcomings that prior art, the technical problem to be solved in the present invention is to provide a kind of independent liquid goods
Cabin and liquefied gas carrier, it can more fully utilize hull space, improve volume of compartment utilization rate, while independent liquid cargo tank can also be improved
Stability and liquefied gas carrier transport security.
In order to achieve the above objects and other related objects, the present invention provides a kind of independent liquid cargo tank, is installed in liquefied gas carrier
On, the independent liquid cargo tank includes three columnar flow containers mutually passed through each other, and the flow container above is the first flow container,
Underlying two flow containers are respectively the second flow container and the 3rd flow container；The independent liquid cargo tank is with the liquefied gas carrier
Center line face is that the plane of symmetry is in symmetry shape, the central axis of second flow container and the 3rd flow container with the middle parallel line surface, institute
The central axis for stating the first flow container is located in the center line face；In the radial section of the independent liquid cargo tank, three liquid
The radius of tank is R, and the center of circle of first flow container is O1, the center of circle of second flow container and the 3rd flow container is respectively O2And O3,
O2O3The half of length is S1, O1To O2O3The vertical range of line is S2, S1<0.7*R, S2≤1.2*S1.
Preferably, it is provided with first at the inside of the independent liquid cargo tank, the mutually place of passing through of first flow container and the second flow container
The mutually place of passing through of longitudinal bulkhead, first flow container and the 3rd flow container is provided with the second longitudinal bulkhead, second flow container and the 3rd flow container
Mutually the place of passing through is provided with the 3rd longitudinal bulkhead；First longitudinal bulkhead, the second longitudinal bulkhead and the 3rd longitudinal bulkhead are connected at the center line face
Connect, in the radial section of the independent liquid cargo tank, the tie point of first longitudinal bulkhead, the second longitudinal bulkhead and the 3rd longitudinal bulkhead
For O, OO1Length be S3, S3=(S12+S22)/(2*S2)；First longitudinal bulkhead is perpendicular to O1O2, second longitudinal bulkhead
Perpendicular to O1O3。
It is further preferred that second flow container is communicated with first longitudinal bulkhead with the first flow container first connects
Hole, the second intercommunicating pore of the 3rd flow container and the first flow container is communicated with second longitudinal bulkhead；3rd longitudinal bulkhead
By second flow container with the 3rd flow container is liquid-tight isolates.
Preferably, first intercommunicating pore is symmetrical arranged a more step with the second intercommunicating pore relative to the center line face.
Preferably, two gas relative to the symmetrical cylinder in the center line face are provided with the top of first flow container
Room, the central axis of the air chamber be located at in the perpendicular of the middle parallel line surface, the central axis of the air chamber to institute
The distance for stating center line face is S4, and the radius of the air chamber is r, S4=S1-r；The bottom of second flow container and the 3rd flow container with
Each air chamber is correspondingly each provided with a hydrops groove, and the central axis of the air chamber with the air chamber by being located at the center line
The hydrops groove of face homonymy.
It is further preferred that be provided with motor in the air chamber, be provided with hydraulic pump in the hydrops groove, the motor with
It is connected between hydraulic pump by a vertical power transmission shaft.
Preferably, each flow container is equipped with dome head, and the radius of the dome head is R.
The present invention also provides a kind of liquefied gas carrier, and above-mentioned independent liquid cargo tank is installed on the liquefied gas carrier.
As described above, the independent liquid cargo tank and liquefied gas carrier of the present invention, have the advantages that：Independent liquid cargo tank uses
Three cylindrical shape flow containers mutually passed through each other form three ear tank forms (isosceles triangle), the energy compared with traditional ears type independent liquid cargo tank
Hull space is enough set to be more fully utilized, volume of compartment utilization rate is higher.Each flow container inside independent liquid cargo tank is arranged at mutually to pass through
The longitudinal bulkhead at place is in Y types, can either strengthen rigidity, the strength and stability of independent liquid cargo tank, its size design can also be effective
Reduce longitudinal bulkhead and the concentrated stress of flow container housing junction.The first intercommunicating pore and the second intercommunicating pore of Y type longitudinal bulkhead V-types part
Realize liquid phase of the top flow container respectively between the flow container of lower section two to connect, I types part is realized between two flow containers in lower section
Liquid-tight isolation, avoid in ears type independent liquid cargo tank and made between two flow containers because liquid phase connects the big free surface to be formed
Into center of gravity tilt, or need the gas phase communication apparatus set up because gas phase connects, ensure that independent liquid cargo tank and liquefaction
The stability and security of gas Ship Transportation.
Brief description of the drawings
Fig. 1 is shown as longitudinal front view of the independent liquid cargo tank in the present invention.
Fig. 2 is shown as longitudinal top view of the independent liquid cargo tank in the present invention.
Fig. 3 is shown as along Fig. 1 along the vertical sectional view of line A-A.
Component label instructions
1 first flow container
2 second flow containers
3 the 3rd flow containers
4 center line faces
5 first longitudinal bulkheads
6 second longitudinal bulkheads
7 the 3rd longitudinal bulkheads
81 air chambers
82 hydrops grooves
9 dome heads
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
Fig. 1 is referred to Fig. 3.It should be noted that the diagram provided in the present embodiment only illustrates this in a schematic way
The basic conception of invention, the component relevant with the present invention is only shown in schema then rather than according to package count during actual implement
Mesh, shape and size are drawn, and kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its
Assembly layout kenel may also be increasingly complex.
For sake of convenience, direction is defined as follows in text：Along hull height direction, it is vertical from ship top to hull bottom direction, refers to
It is top to the direction on ship top, the direction for pointing to hull bottom is lower section；It is horizontal stroke from hull larboard to starboard along beam of hull direction
To；It is longitudinal direction from stem to ship stern direction along ship length direction.Above-mentioned direction defines does not play any limit to the structure of the present invention
It is set for using.
Independent liquid cargo tank provided by the invention is on the basis of the independent liquid cargo tank of ears type flow container, and one kind of proposition is new
The independent liquid cargo tank of type.The flow container that two phases of ears type independent liquid cargo tank are passed through is horizontally arranged in the horizontal, refers to Fig. 1 to figure
3, independent liquid cargo tank provided by the invention is that a cylindrical shape flow container is further added by above ears type independent liquid cargo tank, three circles
Tubular flow container is mutually passed through each other with the structure of isosceles triangle in the horizontal.Flow container above is the first flow container, underlying two
Individual and Drainage tank is respectively the second flow container and the 3rd flow container.The central axis of each flow container extends longitudinally.
As shown in Figures 2 and 3, independent liquid cargo tank is installed on liquefied gas carrier, and independent liquid cargo tank is with liquefied gas carrier
Center line face is that the plane of symmetry is in symmetry shape, and the center line face of independent liquid cargo tank overlaps with the center line face of liquefied gas carrier, is referred to as center line face.
The central axis of second flow container and the 3rd flow container is located in center line face with middle parallel line surface, the central axis of the first flow container.Such as
Shown in Fig. 3, in the radial section (vertical section) of independent liquid cargo tank, the radius of three flow containers is R.Allow in hull size
On the premise of, each flow container is equipped with dome head effectively to increase volume of compartment, and the radius of the dome head is also R.First flow container
The center of circle (center of curvature) be O1, the center of circle (center of curvature) of the second flow container and the 3rd flow container is respectively O2And O3。O2O3Length
Half is S1, i.e. the straight line of the respective central axis of underlying two flow containers (the second flow container and the 3rd flow container) to center line face
Distance is S1.O1To O2O3The vertical range of line is S2.By simulation calculation and experimental verification, to make independent liquid cargo tank
Size design meets the maximization that volume of compartment utilization rate is realized under the conditions of fixed Ship's Principal Dimensions, the size of independent liquid cargo tank
Following condition should be met：S1<0.7*R, S2≤1.2*S1.
To ensure the rigidity of independent liquid cargo tank, strength and stability, independent liquid cargo tank is internally provided with for supporting flow container
The longitudinal bulkhead of housing.In the present invention, the longitudinal bulkhead for being arranged at the inside of independent liquid cargo tank is in Y types, and the Y types longitudinal bulkhead includes first
Longitudinal bulkhead, the second longitudinal bulkhead and the 3rd longitudinal bulkhead three parts.The mutually place of passing through of first flow container and the second flow container is provided with the first longitudinal bulkhead,
The mutually place of passing through of first flow container and the 3rd flow container is provided with the second longitudinal bulkhead, and it is vertical that the mutually place of passing through of the second flow container and the 3rd flow container is provided with the 3rd
Bulkhead.First longitudinal bulkhead, the second longitudinal bulkhead form the V-type part in Y type longitudinal bulkheads；3rd longitudinal bulkhead is formed in Y type longitudinal bulkheads
I types part.First longitudinal bulkhead, the second longitudinal bulkhead and the 3rd longitudinal bulkhead are connected at center line face.As shown in figure 3, in independence
In the radial section (vertical section) of cargo tank, the tie point of the first longitudinal bulkhead, the second longitudinal bulkhead and the 3rd longitudinal bulkhead is O.O1
Positioned at O top, OO1Straight length be S3.
Place is mutually passed through in each flow container, i.e., each longitudinal bulkhead is easy to stress concentration occur with the place that the housing of flow container is connected
Phenomenon, the concentrated stress in the transportation of low pressure liquefied gas ship at flow container housing can cause the rupture of flow container housing, influence
Ship transportation safety.By simulation calculation and experimental verification, to reduce flow container stress concentration degree as far as possible, the size of longitudinal bulkhead is set
Meter should meet：S3=(S12+S22)/(2*S2), the first longitudinal bulkhead is perpendicular to O1O2Line, the second longitudinal bulkhead is perpendicular to O1O3Even
Line.3rd longitudinal bulkhead is placed exactly on the center line face of hull, so being also perpendicularly to O2O3。
If being that liquid phase connects between the second flow container and the 3rd flow container, the horizontal plane where O points will form independent liquid
The maximum free surface of cargo compartment.To prevent liquefied gas carrier from operationally causing liquid center of gravity because of the flowing of big free surface
Skew, and then cause the reduction of liquefied gas carrier stability, the 3rd of (I types part) is vertical between the second flow container and the 3rd flow container
Bulkhead serves the effect of liquid-tight isolation, has blocked the liquid phase between the second flow container and the 3rd flow container to connect；On first longitudinal bulkhead
Provided with the first intercommunicating pore, the second longitudinal bulkhead is provided with the second intercommunicating pore, make the first flow container respectively at the second flow container and the 3rd liquid
Liquid phase connection is formed between tank.First intercommunicating pore and the second intercommunicating pore can be respectively one or more, and can be faced relative to center line
Claim to set.
The free surface of horizontal plane where O points and not up to O points place horizontal plane is by the 3rd vertical cabin in independent liquid cargo tank
Wall is divided into two liquid levels independent of each other.For the liquid level higher than horizontal plane where O points, because the flow container of independent liquid cargo tank is
Start to be gradually reduced from duplex cylinder to a cylinder transition, free surface, therefore in independent liquid cargo tank provided by the invention simultaneously
Be not in foregoing big free surface, can effectively reduce the big free surface brought because the liquid phase of independent liquid cargo tank connects
Harmful effect, improve the safety and stability of independent liquid cargo tank.In addition, such setting can also improve ears type independence
Because liquid phase does not connect the present situation that can only be connected by gas phase between two of cargo tank and Drainage tank, without again each flow container it
Between configure gas phase communication apparatus.
The top vertical of first flow container is provided with two relative to the symmetrical cylindrical air chamber in center line face, the central shaft of air chamber
Line is located at and in the perpendicular of middle parallel line surface, the central axis of air chamber to the air line distance in center line face is S4, air chamber partly
Footpath is r, meets S4=S1-r.The bottom of second flow container and the 3rd flow container is each provided with a hydrops groove.The central axis of air chamber leads to
Cross the hydrops groove for being located at center line face homonymy therewith.Motor is provided with air chamber, hydraulic pump, motor and hydraulic pressure are provided with hydrops groove
It is connected between pump by a vertical power transmission shaft, such position of air chamber and hydrops groove, which is set, is more beneficial for liquid pump and motor
Arrangement.
The present invention also provides a kind of liquefied gas carrier, and independent liquid cargo tank as described above is equiped with the liquefied gas carrier.
In summary, independent liquid cargo tank provided by the invention, the advantage of ears type flow container and cylindrical shape flow container, shape are combined
Into a kind of independent liquid cargo tank of three new ear tank forms (isosceles triangle).Three cylindrical shape flow containers mutually pass through each other, are counted by emulating
Calculate and the liquid tank structure size of experimental verification enables independent liquid cargo tank to meet volume of compartment under the conditions of fixed Ship's Principal Dimensions
Maximization, more fully utilize hull space.Compared with ears type independent liquid cargo tank, dropped in the case where reaching identical volume of compartment
Low flow container weight, reduces Ship's Principal Dimensions, improves economic benefit.The Y type longitudinal bulkheads being arranged inside independent liquid cargo tank
It is not only able to strengthen rigidity, the strength and stability of independent liquid cargo tank, its size design can also effectively reduce longitudinal bulkhead can
The harmful effects such as the stress concentration that can be brought, ensure the security of liquefied gas carrier transport.In addition, it is opened in V in the longitudinal bulkhead of Y types
The intercommunicating pore of type part connects the first flow container with the second flow container and the 3rd flow container liquid phase respectively, avoids ears type independence liquid goods
The cabin big free surface to be formed because liquid phase connects and the center of gravity tilt phenomenon brought, without to realize that gas phase connection is set up
Gas phase communication apparatus.Independent liquid cargo tank provided by the invention is especially suitable for the various liquefaction using large-scale c-type independent liquid cargo tank
Gas ship.The liquefied gas carrier provided by the invention for being equiped with above-mentioned independent liquid cargo tank also has above advantage.So the present invention is effectively
Overcome various shortcoming of the prior art and have high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (7)
1. a kind of independent liquid cargo tank, is installed on liquefied gas carrier, it is characterised in that：The independent liquid cargo tank includes three phases each other
The columnar flow container passed through, the flow container above are the first flow container, and underlying two flow containers are respectively
Two flow containers and the 3rd flow container；The independent liquid cargo tank is in symmetry shape by the plane of symmetry of the center line face of the liquefied gas carrier, and described
The central axis of two flow containers and the 3rd flow container is with the middle parallel line surface, and the central axis of first flow container is in described
In line face；In the radial section of the independent liquid cargo tank, the radius of three flow containers is R, the circle of first flow container
The heart is O1, the center of circle of second flow container and the 3rd flow container is respectively O2And O3, O2O3The half of length is S1, O1To O2O3Line
Vertical range be S2, S1<0.7*R, S2≤1.2*S1；In the inside of the independent liquid cargo tank, first flow container and second
The mutually place of passing through of flow container is provided with the first longitudinal bulkhead, and the mutually place of passing through of first flow container and the 3rd flow container is provided with the second longitudinal bulkhead, described
The mutually place of passing through of second flow container and the 3rd flow container is provided with the 3rd longitudinal bulkhead；The vertical cabin of first longitudinal bulkhead, the second longitudinal bulkhead and the 3rd
Wall is connected at the center line face, in the radial section of the independent liquid cargo tank, first longitudinal bulkhead, the second longitudinal bulkhead
Tie point with the 3rd longitudinal bulkhead is O, OO1Length be S3, S3=(S12+S22)/(2*S2)；First longitudinal bulkhead is vertical
In O1O2, second longitudinal bulkhead is perpendicular to O1O3。
2. independent liquid cargo tank according to claim 1, it is characterised in that：Described is communicated with first longitudinal bulkhead
First intercommunicating pore of two flow containers and the first flow container, the 3rd flow container and the first flow container are communicated with second longitudinal bulkhead
Second intercommunicating pore；3rd longitudinal bulkhead by second flow container with the 3rd flow container is liquid-tight isolates.
3. independent liquid cargo tank according to claim 2, it is characterised in that：First intercommunicating pore is relative with the second intercommunicating pore
It is symmetrical arranged in the center line face.
4. independent liquid cargo tank according to claim 1, it is characterised in that：Two phases are provided with the top of first flow container
For the air chamber of the symmetrical cylinder in the center line face, the central axis of the air chamber is positioned at vertical with the middle parallel line surface
In plane, the central axis of the air chamber is S4 to the distance in the center line face, and the radius of the air chamber is r, S4=S1-r；Institute
The bottom for stating the second flow container and the 3rd flow container is correspondingly each provided with a hydrops groove, the central shaft of the air chamber with each air chamber
Line is by being located at the hydrops groove of center line face homonymy with the air chamber.
5. independent liquid cargo tank according to claim 4, it is characterised in that：Motor, the hydrops are provided with the air chamber
Hydraulic pump is provided with groove, is connected between the motor and hydraulic pump by a vertical power transmission shaft.
6. independent liquid cargo tank according to claim 1, it is characterised in that：Each flow container is equipped with dome head, described
The radius of dome head is R.
A kind of 7. liquefied gas carrier, it is characterised in that：Installing is just like any one of claim 1 to 6 on the liquefied gas carrier
Independent liquid cargo tank.
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| CN201510005107.XA CN105818928B (en) | 2015-01-06 | 2015-01-06 | A kind of independent liquid cargo tank and liquefied gas carrier |
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| CN201510005107.XA CN105818928B (en) | 2015-01-06 | 2015-01-06 | A kind of independent liquid cargo tank and liquefied gas carrier |
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| CN105818928B true CN105818928B (en) | 2017-12-05 |
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| CN108153992B (en) * | 2018-01-17 | 2021-08-06 | 江南造船(集团)有限责任公司 | Modeling method and system of liquid cargo tank, storage medium and electronic equipment |
| CN112319705B (en) * | 2020-11-13 | 2022-05-10 | 上海海威斯特保温工程有限公司 | C-shaped LNG liquid cargo tank spraying type heat insulation system and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07196073A (en) * | 1993-12-29 | 1995-08-01 | Nkk Corp | Hull construction for tanker |
| JP2002046686A (en) * | 2000-08-07 | 2002-02-12 | Mitsubishi Heavy Ind Ltd | Cargo tank ship |
| JP2008215481A (en) * | 2007-03-02 | 2008-09-18 | National Maritime Research Institute | Pressure vessel, floating body structure having pressure vessel and design method of pressure vessel |
| SG2014011985A (en) * | 2011-08-13 | 2014-06-27 | Nobuyoshi Morimoto | Lng ship |
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Non-Patent Citations (1)
| Title |
|---|
| 液化气船船型主尺度与液舱型式匹配综述;叶彼得;《江南集团技术》;20020930;第4-8页 * |
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