CN106005271A - Liquefied gas storage tank and vessel - Google Patents
Liquefied gas storage tank and vessel Download PDFInfo
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- CN106005271A CN106005271A CN201510713161.XA CN201510713161A CN106005271A CN 106005271 A CN106005271 A CN 106005271A CN 201510713161 A CN201510713161 A CN 201510713161A CN 106005271 A CN106005271 A CN 106005271A
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Abstract
The invention provides a liquefied gas accumulation tank and a vessel. The liquefied gas accumulation tank comprises a tank main body (7) internally provided with an accumulation space (10) for accumulating liquefied gas, a tank top cover (8) upward projecting from the tank main body (7) and having a convex space (21) communicating with the accumulation space (10), and a communication part (9) making a liquefied gas phase existing in an upper gas phase region of the convex space (21) communicate with an independent gas phase generation region of the convex space (21).
Description
Technical field
The present invention relates to liquid gas and house tank and boats and ships.
Background technology
Known have following boats and ships: in order to transport the liquid etc. of extremely low temperature, is provided with ship in hull
Vertical section on cross direction constitutes the liquid goods tank of polygonal box, spherical tank etc. and houses tank.This
Kind house tank have as a rule for that carry out at an upper portion thereof loading and unloading, be referred to as top ends of cans
Structure.On this top ends of cans, exceed predetermined pressure in order to the pressure in housing tank rises
In the case of protective pot and be provided with various pipe arrangements and the device class such as relief valve of release pressure.
Above-mentioned collecting tank is in order to improve transfer efficiency, it is desirable to improve the liquid as goods as much as possible
The loading rate of activating QI body.Such as, the navigation of month is being carried out with the loading rate of about 98%
In the case of, goods expands because of temperature rising etc., sometimes becomes about 99.5% when unloading
Loading rate.Now, guarantee there is little gas phase in the inside of above-mentioned top ends of cans, the end of relief valve
Portion is not immersed in liquid phase.
As the technology that the gas housed in tank is discharged to outside, having described in patent documentation 1
By be collected in produce escaping gas goods carried out unloading after tank in gas and
Reclaim the retracting device of hydrocarbon gas.The retracting device of this patent documentation 1 have make unrecovered lazy
Property gas etc. return the pipeline in tank.
Patent documentation
Patent documentation 1: Japanese Laid-Open Patent Publication 59-164286 publication
Summary of the invention
Invent problem to be solved
In the collecting tank of above-mentioned carrying liquefied gases, according to international bulk carrying liquefied gases ship
The structure of liquid goods tank is provided with by oceangoing ship structure and equipment Regulation (hereinafter referred to as " IGCCode ")
Limit.That is, for above-mentioned collecting tank, in the range of the structure specified by " IGCCode ",
It is designed in the way of total measurement (volume) is the biggest." IGCCode " above-mentioned pressure release should be also specify
Valve does not immerse in liquid phase.
In above-mentioned " IGCCode ", newly make for start after on July 1st, 2016 to start building
Ship, begins to use following rule.This rule is " to run with the cargo containment rate more than 98%
, under (a) state, must not there is independent air pocket in liquefied gas carrier in this liquid goods tank ".
A the state of () is as described below.
1.5%Lpp trim (bow and stern) and 15 degree of inclinations ... (a)
" Lpp " refers to the length being equipped with between the bow after-perpendicular of the boats and ships of liquid goods tank.
In above-mentioned collecting tank, when cargo containment rate, more than 98% and liquefied gas carrier exists
When tilting under the conditions of (a), it is possible to be separately formed air pocket at the shoulder housing can body.Cause
This, to meet the regulation of " IGCCode " effectively, then need the loading rate of liquid gas
Suppression is less than 98%.If like this loading rate of liquid gas being suppressed relatively low, then lead
The amount causing the once liquid gas that navigation is transported declines, and transfer efficiency is deteriorated.
It is an object of the invention to provide and the loading rate of liquid gas can not be made to meet with declining
The condition that " IGCCode " specifies such that it is able to the liquid gas of the decline of suppression transfer efficiency is received
Hold tank and boats and ships.
For solving the scheme of problem
The first technical scheme according to the present invention, liquid gas collecting tank has and has receipts in inside
Hold the can body of the receiving space of liquid gas.This liquid gas houses tank also to be had from above-mentioned tank
Main body highlights upward and has the tank deck of the convex space connected with above-mentioned receiving space in inside
Lid.This liquid gas house tank be also equipped with interconnecting part, above-mentioned interconnecting part make in above-mentioned convex space,
The upper gaseous phase region that the gas phase of above-mentioned liquid gas exists with in above-mentioned receiving space, can
The separate gas phase of the gas phase producing the gas phase independence with above-mentioned convex space produces regional connectivity.
By so constituting, it is possible to make to be present in the top of the convex space of top ends of cans by interconnecting part
Vapor phase areas produces regional connectivity with the separate gas phase of the receiving space of can body.Therefore, it is possible to
The gas phase that suppression can produce in the receiving space of can body is independent.As a result of which it is, can not
The loading rate making liquid gas meets the condition that " IGCCode " specifies with declining.Thereby, it is possible to
The decline of suppression transfer efficiency.
According to the second technical aspect of the present invention, liquid gas houses tank in the first technical scheme
On the basis of, it is also possible to possess relief valve, during in the inside of above-mentioned can body beyond predetermined pressure,
Above-mentioned relief valve can be by the gas phase of above-mentioned convex space to the outside releasing of above-mentioned can body.
By so constituting, in the convex space of top ends of cans, the side of liquid phase will not be immersed with relief valve
Formula guarantees the gas phase of convex space.Therefore, even if there being gas in the receiving space of can body
Phase, it is also possible to connected the gas phase of convex space and the gas phase of receiving space by interconnecting part, as long as
Relief valve works, and can make the gas phase outside release to can body of receiving space.
According to the third technical aspect of the present invention, it is also possible to be, in liquid gas houses tank,
Interconnecting part in first or second technical scheme makes on above-mentioned than above-mentioned can body place in the outer part
Portion's vapor phase areas produces regional connectivity with above-mentioned separate gas phase.
By so constituting, it is possible to easily the tank identical with the shape of existing tank is added connection
Portion.Therefore, it is possible to suppression design complicates.
According to the fourth technical aspect of the present invention, it is also possible to be, in liquid gas houses tank,
Interconnecting part in 3rd technical scheme has the groove forming portion in the space forming channel-shaped.Can also be,
Interconnecting part and then make above-mentioned upper gaseous phase region and above-mentioned separate gas phase produce via above-mentioned groove forming portion
Raw regional connectivity.
By in this wise interconnecting part being formed as channel-shaped, and can make to arrange interconnecting part sky is set
Between be Min..Therefore, it is possible to correspondingly suppress under tankage size with the space arranging interconnecting part
Fall.
The 5th technical scheme according to the present invention, it is also possible to be, in liquid gas houses tank,
Interconnecting part in 3rd technical scheme possesses the outside pipe arrangement of tubulose.Can also be, interconnecting part enters
And make above-mentioned upper gaseous phase region via said external pipe arrangement and make to state separate gas phase generation region even
Logical.
By so constituting, it is possible to the cost of suppression part, and can easily construct.
The 6th technical scheme according to the present invention, it is also possible to be, in liquid gas houses tank,
Outside pipe arrangement in 5th technical scheme possesses displacement absorption portion, in the absorption of above-mentioned displacement absorption portion
State the top ends of cans displacement relative to the relative position of above-mentioned can body.
By so constituting, though the relative position between can body with top ends of cans because of shake,
In the case of inclination waits and is subjected to displacement, it is also possible to absorb this displacement by displacement absorption portion.
Therefore, it is possible to suppression acts on this linking part from can body, the top ends of cans connected by interconnecting part
Stress increases.
The 7th technical scheme according to the present invention, it is also possible to be, in liquid gas houses tank,
Interconnecting part in first～the 6th arbitrary technical scheme in technical scheme possesses the inside of tubulose and joins
Pipe.Can also be, interconnecting part and then make in the inner side of above-mentioned can body via above-mentioned internal pipe arrangement
Above-mentioned upper gaseous phase region produces regional connectivity with above-mentioned separate gas phase.
By so constituting, in the outside of can body without arranging the space of interconnecting part.Therefore,
Compared with the situation being externally formed with interconnecting part after being provided with can body, it is possible to increase connection
The application property in portion.
The 8th technical scheme according to the present invention, boats and ships possess first～the 7th in technical scheme
Arbitrary liquid gas houses tank.
By this structure, even if being formed in can body because of underway inclination, shake etc.
In the case of having gas phase, it is also possible to suppression gas phase is separately formed.Therefore, it is possible to do not make liquefaction
The loading rate of gas declines the decline of ground suppression transfer efficiency.
Invention effect
According to above-mentioned liquid gas house tank, it is possible to do not make the loading rate of liquid gas decline full
The condition that foot " IGCCode " specifies, it is possible to the decline of suppression transfer efficiency.
Accompanying drawing explanation
Fig. 1 is the figure of the schematic configuration of the boats and ships of the first embodiment representing the present invention.
Fig. 2 is the axonometric chart of the liquid goods tank of first embodiment of the present invention.
Fig. 3 is the top view of the liquid goods tank of first embodiment of the present invention.
Fig. 4 is the front view of the liquid goods tank of first embodiment of the present invention.
Fig. 5 is formed at the explanatory diagram of the independent air pocket in the liquid goods tank of general boats and ships.
Fig. 6 is the front view being equivalent to Fig. 4 of the variation of first embodiment of the present invention.
Fig. 7 is the enlarged drawing near the top ends of cans of the liquid goods tank of second embodiment of the present invention.
Fig. 8 is the axonometric chart of the outside pipe arrangement of the variation of second embodiment of the present invention.
Fig. 9 is the enlarged drawing being equivalent to Fig. 7 of third embodiment of the present invention.
Detailed description of the invention
(the first embodiment)
Then, based on accompanying drawing, the boats and ships of first embodiment of the present invention are illustrated.
Fig. 1 is the figure of the schematic configuration of the boats and ships of the first embodiment representing the present invention.
The boats and ships 1 of present embodiment are transport LPG (liquefied petroleum gas: liquefaction stone
Oil gas) LPG cargo ship.These boats and ships 1 are in order to transport more LPG, it is possible to by LPG with cold
But liquefy and reduce the state of volume and be stored in liquid goods tank 3 (liquid gas collecting tank).At this
The outer surface of liquid goods tank is provided with adiabator.
As it is shown in figure 1, boats and ships 1 hull 2 be internally formed multiple cargo hold 4.Above-mentioned cargo hold 4
It it is the space housing liquid goods tank 3.Above-mentioned cargo hold 4 is provided with in a row along the arrangement of the ship cephalocaudal direction
Multiple.Cargo hold 4 adjacent on the ship cephalocaudal direction is divided wall 6 and divides along the ship cephalocaudal direction.
Cargo hold 4 in present embodiment is formed at upper deck 5 position on the lower than hull 2.At this figure
In 1, it is depicted with arrows the ship cephalocaudal direction of hull 2, represents ship's head with " F " arrow, with
" A " arrow represents stern direction.
Fig. 2 is the axonometric chart of the liquid goods tank of first embodiment of the present invention.Fig. 3 is the present invention
The top view of the liquid goods tank of the first embodiment.Fig. 4 is the liquid goods of first embodiment of the present invention
Front view under the state that tank tilts.
As shown in Figures 2 to 4, the liquid goods tank 3 in present embodiment possesses can body 7, top ends of cans 8
And interconnecting part 9.
Can body 7 has the receiving space 10 housing liquid gas therein.This can body 7 is
Vertical section on beam direction is formed as the so-called square tank of polygonal box.Can body 7 has
Standby: upper wall 11, diapire 12, left side wall 13, right side wall 14, antetheca 15 and rear wall 16.This reality
Execute the can body 7 in mode also to carry out down with the corner to the can body 7 observed from the ship cephalocaudal direction
The mode at angle has four inclined walls 17～20.Can body 7 by above-mentioned upper wall 11, diapire 12,
Left side wall 13, right side wall 14, antetheca 15, rear wall 16 and inclined wall 17～20 and formed collecting sky
Between 10.
Here, exemplified with the situation of constant dimension in beam direction of liquid goods tank 3 in Fig. 1, Fig. 2.
But, liquid goods tank 3 is not limited to the shape shown in Fig. 1, Fig. 2.In boats and ships 1, the beam of hull 2
The size in direction can change in bow side and stern-side.Additionally, liquid goods tank 3 needs at cargo hold
The biggest volume is guaranteed in 4.Therefore, in multiple liquid goods tanks 3, be especially configured at ship
Liquid goods tank 3 near the bow of body 2 and near stern is formed as left side wall 13, right side wall 14 with edge
The mode of the shape the ship side of hull 2 tilts or bends.
Top ends of cans 8 is formed as highlighting upward from can body 7.The top ends of cans 8 of present embodiment is from tank
The upper wall 11 of main body 7 highlights.This top ends of cans 8 has the receiving space 10 with can body 7 therein
The convex space 21 of connection.The top ends of cans 8 of present embodiment is formed as the rectangular-shaped of hollow.That is,
It is internally formed rectangular-shaped convex space 21 at top ends of cans.This top ends of cans 8 is configured to its upper end
Portion 8a is such as prominent than the upper deck 5 of hull 2 side more up.It is contained in the liquid gas of liquid goods tank 3
G is loaded and unloaded via this top ends of cans 8.
Top ends of cans 8 is configured with relief valve 23 (with reference to Fig. 4).This relief valve 23 is by tank
The internal pressure of main body 7 protects liquid goods tank 3 beyond valve opening during predetermined pressure.By relief valve 23
Valve opening, and to the outside gas phase releasing convex space 21 of can body 7.By the releasing of this gas phase,
And the internal pressure of can body 7 declines.Here, be contained in the loading of the liquid gas G of liquid goods tank 3
Rate is set as relief valve 23 will not immerse the loading rate (such as, about 98%) of liquid phase L.Change speech
It, there are certain gas phase V all the time on the top of the convex space 21 of top ends of cans 8.
The explanatory diagram of the independent air pocket in the liquid goods tank that Fig. 5 is formed in general boats and ships.
As it is shown in figure 5, in the case of cargo containment rate is more than 98%, make that there is top ends of cans 8
Liquid goods tank 3 press International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (hereinafter referred to as
" IGCCode ") following (a) condition of specifying tilts.
1.5%Lpp trim (bow and stern) and 15 degree of inclinations ... (a)
Here, " Lpp " refers to the length being mounted with between the bow after-perpendicular of the boats and ships 1 of liquid goods tank 3
Degree.
Then, for example, it is possible to because shake when boats and ships 1 navigate by water, inclination, temperature rising etc. are each
Plant major reason and in the receiving space 10 of liquid goods tank 3, produce independent air pocket (gas phase) P.
Here, " independent " refers to air pocket P not by the state of gas with other environmental communication." its
His environment " refer to gas phase V or the outside etc. of liquid goods tank 3 of the convex space 21 of top ends of cans 8.
In " IGCCode ", in the case of the loading rate of liquid gas G is more than 98%, prohibit
Only produce above-mentioned independent air pocket P.
As shown in Figures 2 to 4, during interconnecting part 9 makes convex space 21, gas phase V of liquid gas G
In the upper gaseous phase region and the receiving space 10 that exist, can produce and gas phase V of convex space 21
The separate gas phase of independent air pocket P produces regional connectivity.Here, " independent air pocket can be produced
The separate gas phase of P produces region " refer to be likely to form in the case of there is no interconnecting part 9 solely
The region of vertical air pocket P.That is, even if when not forming air pocket P, this region is also " solely
Vertical gas phase produces region ".Direction that " upper gaseous phase region " tilts according to hull 2 (left or
Right) and make its shape change, but there are gas phase V all the time.Beam direction configures
Upper gaseous phase region when interconnecting part 9 in left side makes hull 2 tilt to the right and the independence in left side
Gas phase produces regional connectivity.In the same manner, the interconnecting part 9 being configured at right side on beam direction makes ship
Upper gaseous phase region when body 2 tilts to the left produces regional connectivity with the separate gas phase on right side.
In fig. 2, when cargo containment rate has exceeded 98%, represent marking grid
The gas phase of the liquid gas G under the conditions of above-mentioned (a) and the separating surface of liquid phase.At above-mentioned (a) bar
The separate gas phase produced under part produces region according to the shape of liquid goods tank 3, the loading of liquid gas G
Rate etc. and change.This separate gas phase produces region can be determined by the shape of liquid goods tank 3, and
Determine the desired value of the loading rate of liquid gas G, and such as obtained by simulation etc..
The interconnecting part 9 of present embodiment makes tank deck than receiving space 10 place in the outer part of can body 7
The upper gaseous phase region of lid 8 produces regional connectivity with the separate gas phase of can body 7.Additionally, this reality
The interconnecting part 9 executing mode has the groove forming portion 24 in the space forming channel-shaped.Interconnecting part 9 has two
Individual groove forming portion 24.The space of the channel-shaped formed via above-mentioned groove forming portion 24 and can connect
The upper gaseous phase region of top ends of cans 8 produces region with the separate gas phase of can body 7.
The groove forming portion 24 of present embodiment respectively from the side 8b of top ends of cans 8 to beam direction
Side extends.Its lateral receiving space 10 opening of can body 7 of these groove forming portions 24.From can body 7
Inner side observe, groove forming portion 24 space formed is formed as channel-shaped.With above-mentioned (a) bar
When part makes boats and ships 1 tilt, this groove forming portion 24 can be by its internal gas phase connection top ends of cans 8
The air pocket P of gas phase V and can body 7.Here, the well width bottom line of groove forming portion 24 has
The size of gas phase can be formed therein.The length that groove forming portion 24 extends along beam direction
Degree bottom line has the length that can arrive separate gas phase generation region from top ends of cans 8.Groove
The aspect ratio of forming portion 24 makes the upper end height of liquid level during ship inclination with (a) condition.
Situation about extending above-mentioned groove forming portion 24 along beam direction is illustrated.But, groove
Forming portion 24 is not limited to extend along beam direction.Such as, the shape according to liquid goods tank 3 is the most right
Groove forming portion 24 selects the direction etc. of the ship cephalocaudal direction or the ship cephalocaudal direction and the centre in beam direction
?.In the above-described embodiment, the situation possessing two groove forming portions 24 is illustrated.
But it is also possible to arrange the groove forming portion 24 of more than three.Such as, in figure 3 such as double dot dash line
Shown in, it is also possible to configured slot forming portion 24 radially centered by top ends of cans 8.Fig. 3's is double
Groove forming portion 24 shown in chain-dotted line only represents an example of the bearing of trend of groove forming portion 24.According to
Separate gas phase produces the position in region to be changed according to the shape of liquid goods tank 3, and therefore these grooves are formed
The length that portion 24 extends produces the position in region according to separate gas phase and is set in optimal position
Put.
Here, in receiving space 10, position that the probability that there is air pocket P is the highest be by can body
The position of the corner 7a of the upside that the upper wall 11 of 7 is formed with inclined wall 17,18.Therefore, from tank deck
It is the most reliable that lid 8 to corner 7a forms groove forming portion 24.But, in this case, away from top ends of cans
The distance of 8 is elongated.Accordingly, it would be desirable to groove forming portion 24 is formed longer, at cost and application property
Aspect is disadvantageous.Therefore, in the present embodiment, obtain separate gas phase by simulation etc. to produce
Raw region, produces with separate gas phase leaning on the position of top ends of cans 8 side to cause the grooves to portion 24 than corner 7a
Region connects.
Additionally, be configured on the ship cephalocaudal direction and beam direction with the top ends of cans 8 in present embodiment
Upper wall 11 central part in case of be illustrated.But, the bow tail side of top ends of cans 8
To and beam direction on configuration be not limited to central part.Such as, the most also leaning on than this central part
Bow side, the position batch tank top cover 8 of stern-side.In this case, with consider top ends of cans 8 with
Separate gas phase produces the mode of the configuration relation between region and arranges groove forming portion 24.
Therefore, according to above-mentioned first embodiment, it is possible to make to be present in top ends of cans by interconnecting part 9
The upper gaseous phase region of the convex space 21 of 8 produces with the separate gas phase of the receiving space 10 of can body 7
Regional connectivity.Therefore, it is possible to suppression issuable air pocket in the receiving space 10 of can body 7
P is independent.As a result of which it is, the loading rate of liquid gas G can not be made to meet " IGCCode " with declining
The condition of regulation.Thereby, it is possible to the decline of suppression transfer efficiency.
Additionally, in the convex space 21 of top ends of cans 8 in the way of relief valve 23 will not immerse liquid phase L
In convex space 21, guarantee there is gas phase V.Therefore, even if producing at the receiving space 10 of can body 7
Air pocket P, it is also possible to connected gas phase V and the receiving space 10 of convex space 21 by interconnecting part 9
Air pocket P.Therefore, as long as relief valve 23 works, can be by the gas of the air pocket P of receiving space 10
Body is to the outside release of can body 7.
Additionally, by arranging interconnecting part 9 in the outside of can body 7, and can be easily to existing
The liquid goods tank 3 having the shape of liquid goods tank identical adds interconnecting part 9.Therefore, it is possible to suppression liquid goods tank 3
Design complicate.
Additionally, interconnecting part 9 is made up of the groove forming portion 24 being formed as channel-shaped such that it is able to make setting
The installation space of interconnecting part 9 is Min..Therefore, by arranging interconnecting part 9, and can press down
The tankage size of liquid goods tank 3 processed declines.
(variation of the first embodiment)
Fig. 6 is the front view being equivalent to Fig. 4 of the variation of first embodiment of the present invention.
In the above-described first embodiment, be formed as long to by the groove forming portion 24 constituting interconnecting part 9
The situation of cube shape is illustrated.But, the shape of groove forming portion 24 is not limited to rectangular-shaped.
For example, it is also possible to as shown in Figure 6, be formed as groove forming portion 24 seeing from the ship cephalocaudal direction
Examine triangular shape.So forming flute profile with observing triangular shape from the ship cephalocaudal direction
In the case of one-tenth portion 24, identical with the groove forming portion 24 of above-mentioned first embodiment, it is also possible to logical
Cross the air pocket P of gas phase gas phase V Yu receiving space 10 to connect convex space 21.The most above-mentioned first
In the case of groove forming portion 24 is formed as rectangular shape by embodiment like that, in the appearance of work
Easily the aspect of property is favourable.
(the second embodiment)
Then, based on accompanying drawing, second embodiment of the present invention is illustrated.This second enforcement
Mode is compared with above-mentioned first embodiment, and the only shape of interconnecting part 9 is different.Therefore, this
In the explanation of two embodiments, the accompanying drawing identical to the part mark identical with the first embodiment
Labelling illustrates, and the repetitive description thereof will be omitted.
Fig. 7 is the enlarged drawing near the top ends of cans of the liquid goods tank of second embodiment of the present invention.
As it is shown in fig. 7, the liquid goods tank 203 of this second embodiment possesses: can body 7, top ends of cans
8 and interconnecting part 209.
Interconnecting part 209 is identical with the interconnecting part 9 of above-mentioned first embodiment, make in convex space 21,
The upper gaseous phase region that gas phase V of liquid gas G exists with in receiving space 10, can produce
Regional connectivity is produced with the separate gas phase of the air pocket P of the gas phase V independence of convex space 21.
The interconnecting part 209 of present embodiment makes tank than receiving space 10 place in the outer part of can body 7
The upper gaseous phase region of top cover 8 produces regional connectivity, in this point with the separate gas phase of can body 7
Upper identical with the interconnecting part 9 of the first embodiment.
The interconnecting part 209 of this embodiment possesses the outside pipe arrangement 224 of tubulose.Here, at Fig. 7
In, in order to illustrate conveniently, illustrate only an outside pipe arrangement 224 in multiple outside pipe arrangement 224,
And eliminate the diagram (Fig. 9 is the most identical) of outside pipe arrangement 224 in addition.Interconnecting part 209 warp
The upper gaseous phase region being made gas phase V of convex space 21 exist by these outside pipe arrangements 224 and collecting sky
Between 10 can produce air pocket P separate gas phase produce regional connectivity.
The outside pipe arrangement 224 of this embodiment when the inclination of above-mentioned (a) condition, with liquid phase L
Liquid level parallel and connect upper gaseous phase region and separate gas phase with beeline and produce the side in region
Formula is formed as linearity.The bore bottom line of outside pipe arrangement 224 have can supplied gas in gas phase
The bore of the degree of movement between V and air pocket P.
Here, said said external pipe arrangement 224 is set to the situation parallel with liquid level
Bright, but the angle that arranges of outside pipe arrangement 224 is not limited to above-mentioned arrange angle.Additionally, outside is joined
Pipe 224 is not limited to linearity.Such as, outside pipe arrangement 224 can also be formed as curve-like.
Additionally, outside pipe arrangement 224 is identical with above-mentioned groove forming portion 24, it is not limited to prolong along beam direction
Stretch.Such as, suitably outside pipe arrangement 224 is selected bow tail side according to the shape of liquid goods tank 3
To or the direction etc. of centre in the ship cephalocaudal direction and beam direction.Additionally, above-mentioned second
In embodiment, the situation possessing two outside pipe arrangements 224 is illustrated.However, it is possible to
To arrange plural outside pipe arrangement 224.Can also be identical, with tank with above-mentioned groove forming portion 24
Outside pipe arrangement 224 is configured radially centered by top cover 8.Owing to separate gas phase produces region
Position changes according to the shape of liquid goods tank 3, the length root that therefore said external pipe arrangement 224 extends
Produce the position in region according to separate gas phase and be set to optimal position.
Therefore, according to above-mentioned second embodiment, owing to the outside pipe arrangement 224 of tubulose can be passed through
Constitute interconnecting part 209, therefore, it is possible to the cost of suppression part, and can easily construct.
(variation of the second embodiment)
Fig. 8 is the axonometric chart of the outside pipe arrangement of the variation of second embodiment of the present invention.
As shown in Figure 8, the outside pipe arrangement 224 of the interconnecting part 209 of the variation of this second embodiment
Possesses displacement absorption portion 30.This displacement absorption portion 30 tourie top cover 8 is relative to the phase of can body 7
To displacement.
More particularly, outside pipe arrangement 224 is in top ends of cans connecting tube 31 and can body connecting tube
There is between 32 the displacement making this top ends of cans connecting tube 31 connect with can body connecting tube 32 inhale
Receipts portion 30.
Top ends of cans connecting tube 31 extends along beam direction from the side 8b of top ends of cans 8.Top ends of cans connects
The end (not shown) of pipe 31 is at the gas phase V split shed of above-mentioned convex space 21.Therefore, top ends of cans
Connecting tube 31 leaves the upper wall 11 ground configuration of can body 7.
Can body connecting tube 32 along can body 7 upper wall 11 and along beam direction (in Fig. 8, by
The direction that left arrow, right arrow represent) extend.The end of this can body connecting tube 32 is deviously
Extend (in Fig. 8, lower arrow the direction represented) downwards.The end of can body connecting tube 32
Separate gas phase at the receiving space 10 of above-mentioned can body 7 produces region inner opening.This can body is even
Adapter 32 and above-mentioned top ends of cans connecting tube 31 at above-below direction (in Fig. 8, by upward arrow, lower arrow
The direction represented) upper skew ground configuration.In fig. 8, the ship cephalocaudal direction is by front arrow, rear arrow
The direction that head represents.
Displacement absorption portion 30 makes top ends of cans connecting tube 31 connect with can body connecting tube 32.Displacement is inhaled
Receipts portion 30 has horizontal part 33 and vertical component effect 34.Horizontal part 33 with top ends of cans connecting tube 31 at ship
The mode intersected on the cephalocaudal direction extends.Vertical component effect 34 with horizontal part 33 and can body connecting tube
The mode that 32 these two sides are intersected in the vertical direction extends.
Therefore, according to the variation of above-mentioned second embodiment, horizontal part 33 is relative to top ends of cans
Connecting tube 31 is easily in above-below direction and beam side's upward, and vertical component effect 34 is relative to can body
Connecting tube 32 is easily in the ship cephalocaudal direction and beam side's upward.By above-mentioned flexure, it is possible to
On the ship cephalocaudal direction, beam direction and above-below direction between tourie top cover 8 and can body 7
Relative displacement.As a result of which it is, and arrange outside between top ends of cans 8 and can body 7 point-blank and join
The situation of pipe 224 is compared, it is possible to the stress that suppression produces because of above-mentioned relative displacement acts on tank master
Body 7, top ends of cans 8.
(the 3rd embodiment)
Then, based on accompanying drawing, third embodiment of the present invention is illustrated.3rd implements
Mode is differently configured with the pipe arrangement of above-mentioned second embodiment.Therefore, to real with second
The part that mode of executing is identical marks identical reference and illustrates, and omits repetition
Explanation.
Fig. 9 is the enlarged drawing being equivalent to Fig. 7 of third embodiment of the present invention.
As it is shown in figure 9, the interconnecting part 209 of the 3rd embodiment has internal pipe arrangement 324.This is interior
Portion's pipe arrangement 324 can connect upper gaseous phase region and the receiving space of the gas phase V existence of convex space 21
In 10, exist air pocket P separate gas phase produce regional connectivity.
Internal pipe arrangement 324 is formed as tubulose.This inside pipe arrangement 324 is all configured at liquid goods tank 303
Inside.Internal pipe arrangement 324 is formed along side 8b and the upper wall of can body 7 of top ends of cans 8
11, and it is bent into L-shaped accordingly with the corner 36 formed by side 8b and upper wall 11.This is interior
Portion's pipe arrangement 324 is fixed on the multiple ossiculums 37 prominent from the inside side of inner surface of liquid goods tank 3.Pass through
So it is fixed on ossiculum 37, and internal pipe arrangement 324 leaves the inner surface 3a of liquid goods tank 3.
In the case of tilting with above-mentioned (a) condition, the first end 324a of internal pipe arrangement 324
At gas phase V inner opening.Additionally, when tilting with above-mentioned (a) condition and producing at separate gas phase
When region is formed with air pocket P, the second end 324b of internal pipe arrangement 324 is at air pocket P inner opening.That is,
Gas phase V and air pocket P can be connected by this inside pipe arrangement 324.
Therefore, according to above-mentioned 3rd embodiment, in the outside of can body 7 without arranging interconnecting part
The space of 9.Therefore, with the situation phase being externally formed with interconnecting part 9 after being provided with can body 7
Ratio, it is possible to increase the application property of interconnecting part 9.
The present invention is not limited to above-mentioned embodiment, without departing from the spirit and scope of the invention,
Comprise the technical scheme above-mentioned embodiment being applied various changes and obtain.That is, embodiment
Cited concrete shape, structure etc. are only an example, it is possible to suitably change.
Such as, in the respective embodiments described above, to possess at liquid goods tank 3,203,303 and hull
Have between 2 gap, carry out in case of so-called independent liquid goods tank 3,203,303
Explanation.But, the shape of liquid goods tank 3,203,303 be not limited to above-mentioned liquid goods tank 3,
203, the shape of 303.As long as the shape that top ends of cans 8 highlights upward, such as,
The can body 7 of liquid goods tank 3,203,303 can also be formed on hull 2.Additionally, liquid
As long as the can body 7 of goods tank 3,203,303 is at loading rate more than 98% and at above-mentioned (a)
Tilt during condition and be likely to be of separate gas phase and produce the shape in region, for example, it is also possible to
It is spherical.Additionally, as the shape of can body 7, it is also possible to it is that spherical deformation type will annulus
The tank master of the shape that at least one in face, barrel surface and taper seat and sphere are combined
Body 7.
Additionally, the boats and ships 1 of above-mentioned embodiment are that an example is said with the situation of LPG cargo ship
Bright.But, for boats and ships 1, it is stored in liquid goods tank 3,203,303 and carries out freight
It is not limited to LPG.Can also be LNG (Liquefied Natural Gas: liquefied natural gas) etc..
Description of reference numerals
1 boats and ships
2 hulls
3,203,303 liquid goods tanks (liquid gas collecting tank)
3a inner surface
4 freight houses
5 upper decks
6 partition walls
7 can bodies
7a corner
8 top ends of cans
8a upper end
8b side
9 interconnecting parts
10 receiving spaces
11 upper walls
12 diapires
13 left side walls
14 right side walls
15 antethecas
16 rear walls
17 inclined walls
18 inclined walls
19 inclined walls
20 inclined walls
21 convex spaces
23 relief valves
24 groove forming portions
30 displacement absorption portions
31 top ends of cans connecting tubes
32 can body connecting tubes
33 horizontal parts
34 vertical component effects
36 corners
37 ossiculums
209 interconnecting parts
224 outside pipe arrangements
324 internal pipe arrangements
Claims (8)
1. liquid gas houses a tank, possesses:
There is the can body of the receiving space housing liquid gas in inside；
Highlight upward from described can body and have in inside convex with what described receiving space connected
The top ends of cans in space；And
Interconnecting part, makes the top gas that gas phase in described convex space, described liquid gas exists
In alpha region and described receiving space, the gas of gas phase independence with described convex space can be produced
The separate gas phase of phase produces regional connectivity.
Liquid gas the most according to claim 1 collecting tank, wherein,
Described liquid gas houses tank and possesses relief valve, in the inside of described can body beyond predetermined
During pressure, the gas phase of described convex space can be put by described relief valve to the outside of described can body
Go out.
Liquid gas the most according to claim 1 collecting tank, wherein,
Described interconnecting part makes described upper gaseous phase region with described than described can body place in the outer part
Separate gas phase produces regional connectivity.
Liquid gas the most according to claim 3 collecting tank, wherein,
Described interconnecting part has the groove forming portion in the space forming channel-shaped, and is formed via described groove
Portion makes described upper gaseous phase region produce regional connectivity with described separate gas phase.
Liquid gas the most according to claim 3 collecting tank, wherein,
Described interconnecting part possesses the outside pipe arrangement of tubulose, and makes on described via described outside pipe arrangement
Portion's vapor phase areas produces regional connectivity with described separate gas phase.
Liquid gas the most according to claim 5 collecting tank, wherein,
Described outside pipe arrangement possesses displacement absorption portion, and described displacement absorption portion absorbs described top ends of cans
Displacement relative to the relative position of described can body.
Liquid gas the most according to claim 1 collecting tank, wherein,
Described interconnecting part possesses the inside pipe arrangement of tubulose, and via described internal pipe arrangement described
The inner side of can body makes described upper gaseous phase region produce regional connectivity with described separate gas phase.
8. boats and ships, possess the liquid gas according to any one of claim 1～7 and house
Tank.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-067246 | 2015-03-27 | ||
| JP2015067246A JP6299037B2 (en) | 2015-03-27 | 2015-03-27 | Liquefied gas storage tank and ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106005271A true CN106005271A (en) | 2016-10-12 |
| CN106005271B CN106005271B (en) | 2018-05-22 |
Family
ID=57082622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510713161.XA Active CN106005271B (en) | 2015-03-27 | 2015-10-28 | Liquid gas accommodates tank and ship |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6299037B2 (en) |
| KR (1) | KR101766044B1 (en) |
| CN (1) | CN106005271B (en) |
| PH (1) | PH12015000369A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764401A (en) * | 2017-02-24 | 2017-05-31 | 江苏宏博机械制造有限公司 | A kind of lightweight high intensity pressure resistant type pressure pan |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019039440A (en) * | 2017-08-22 | 2019-03-14 | 三井Ｅ＆Ｓ造船株式会社 | Liquefied gas storage tank structure, floating structure, and release method for internal pressure of storage tank |
| CN115335629A (en) * | 2020-03-26 | 2022-11-11 | 三星重工业有限公司 | Liquefied gas storage tank system and design and manufacturing method thereof |
| JP2021160619A (en) * | 2020-04-01 | 2021-10-11 | 川崎重工業株式会社 | Ship |
| CN113212664A (en) * | 2021-06-09 | 2021-08-06 | 江南造船(集团)有限责任公司 | Air chamber communication structure and liquefied gas carrier of C type fluid reservoir |
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2015
- 2015-03-27 JP JP2015067246A patent/JP6299037B2/en active Active
- 2015-10-08 KR KR1020150141575A patent/KR101766044B1/en active IP Right Grant
- 2015-10-27 PH PH12015000369A patent/PH12015000369A1/en unknown
- 2015-10-28 CN CN201510713161.XA patent/CN106005271B/en active Active
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| JPS59164286A (en) * | 1983-03-10 | 1984-09-17 | Tounen Tanker Kk | Recovering apparatus for gas in cargo tank of ship |
| CN1849242A (en) * | 2003-07-17 | 2006-10-18 | 沙特阿拉伯石油公司 | Gas expansion trunk for marine vessels |
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| CN106764401A (en) * | 2017-02-24 | 2017-05-31 | 江苏宏博机械制造有限公司 | A kind of lightweight high intensity pressure resistant type pressure pan |
Also Published As
| Publication number | Publication date |
|---|---|
| PH12015000369B1 (en) | 2017-05-08 |
| KR101766044B1 (en) | 2017-08-07 |
| JP6299037B2 (en) | 2018-03-28 |
| KR20160115660A (en) | 2016-10-06 |
| JP2016185780A (en) | 2016-10-27 |
| PH12015000369A1 (en) | 2017-05-08 |
| CN106005271B (en) | 2018-05-22 |
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