CN104443283A - Local secondary screen bulkhead applied to B type independent cabin and boat or ocean structure - Google Patents
Local secondary screen bulkhead applied to B type independent cabin and boat or ocean structure Download PDFInfo
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- CN104443283A CN104443283A CN201410697341.9A CN201410697341A CN104443283A CN 104443283 A CN104443283 A CN 104443283A CN 201410697341 A CN201410697341 A CN 201410697341A CN 104443283 A CN104443283 A CN 104443283A
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- wall system
- time screen
- splashproof film
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Abstract
The invention provides a local secondary screen bulkhead applied to a B type independent cabin and a ship or an ocean structure. The local secondary screen bulkhead is completely separated from a B type independent liquid cargo cabin shell and attached to a ship inner shell, and an airtight space is formed outside the B type independent liquid cargo cabin shell. An insulation layer attached to the ship inner shell has the insulation function, a splash-proof film ensuring the airtightness is fixed to the ship inner shell through a fixing device, the B type independent cabin is supported through pressure bearing wood, the bottom of a ship is designed to be a strengthening film and used for bearing a small amount of leaked cargo load. The airtight space between the B type cabin shell and the splash-proof film can serve as a construction space and an overhaul space, and the B type cabin shell and the splash-proof film are detected. According to the technical scheme, the structure is simple, installation is convenient, the construction cost of a ship factory can be saved, and the construction period is shortened.
Description
Technical field
The present invention relates to the ship cabin body structure of a kind of transport and storing liquefied gas, or rather, the local time screen-wall system of the Type B independent liquid cargo tank be applied to by " international bulk carrying liquefied gases ship rule " (IGC code) requirement design is related to.
Background technology
Usually, for transporting and the boats and ships of storage temperature liquefied gas below-55 DEG C, as methane, ethane, ethene etc., its cargo containment system can adopt Type B independent tank, C type independent tank or film-type cargo tank three kinds of patterns.
According to the requirement of IGC code, film-type containment system needs complete main screen wall and complete secondary screen-wall, its form is that complete secondary screen-wall is attached on hull inner casing, complete main screen wall is attached on time screen-wall, main screen wall and time screen-wall must be designed with enough intensity for supporting the cargo load of blue gas, and this load is finally born by hull structure.Film-type containment system to making and installation precision and technological requirement very high, and the cycle is longer.
C type independent liquid cargo tank is a kind of pressure container, according to the requirement of IGC code, do not need to arrange time screen-wall, but because its design vapor pressure is higher, usual C type independent liquid cargo tank is only applied to small liquid gas carrier, for liquefied gas carriers more than 7 or 80,000 sides, do not have exemplary application at present.
Type B independent liquid cargo tank means and adopts model test, Accurate Analysis means and analysis method identified sign level, fatigue life and crack expansion characteristic to carry out the cargo tank designed.Self housing of the type cargo tank is main screen wall, according to the requirement of IGC code, needs to arrange local time screen-wall system.This local time screen-wall system does not need the load supporting liquefied gas cargo, only needs to bear a small amount of goods and reveals.The local time screen-wall system being applied to Type B independent tank at present has SPB type and Moss type, the invention design also having some not to be applied to real ship temporarily in addition.
All these local time screen-wall systems are all attached to Type B independent tank housing, and due to temperature under Type B independent tank loading operating mode extremely low, be tending towards again normal temperature under the operating mode of empty cabin, the temperature difference can be very large, and thing followed shrinkage distortion amount be can not ignore.Above-mentioned local time screen-wall system, when designing, must can sponge the shrinkage distortion amount of Type B independent tank, otherwise local time screen-wall system will be inevitably damaged.Therefore, traditional local time screen-wall system architecture relative complex, mounting process requires relatively high.
Therefore at present for Large LNG, LEG (ethane, ethene) carrier, being no matter adopt film-type containment system or adopt Type B independent tank, is very high to the technical requirements of shipyard and technological level.
Patent CNCN101959752A proposes a kind of diaphragm strenthening member of the anti-compression property for improving the ripply diaphragm of tool, a kind of membrane module with described strenthening member, and a kind of method constructing described membrane module.This invention is by providing a kind of for having ripple and being arranged on the strenthening member of the diaphragm in the isolation junction component of LNG cargo tank, subsiding of ripple can be prevented, and vibration can be weakened for identical load and not need to increase the surface rigidity of ripple, and isolation characteristic can be improved by forming additional isolation layer.But this patent only relates to membrane module, and its screen-wall system architecture relative complex, mounting process requires relatively high.
Summary of the invention
The object of the invention is to, a kind of local time screen-wall system of Type B independent liquid cargo tank is provided, can be used for the stocking system of liquefied gas carrier or the floating structures, this local time screen-wall system is separated completely with Type B independent tank, be attached on hull inner casing, without the need to considering the impact of Type B independent tank shrinkage distortion, thus greatly reduce the requirement to mounting process, and can the production cycle be shortened.
The object of the invention to solve the technical problems realizes by the following technical solutions:
For achieving the above object, on the one hand, provide the local time screen-wall system being applied to Type B independent tank, be applied to transport and store liquified gas carrier, the hull inner casing with spatial accommodation is provided with in described ship, described local time screen-wall system comprises insulating barrier, splashproof film and independent tank cabin body, described insulating barrier is connected with the inside face of the spatial accommodation of described hull inner casing, and form insulating space, described splashproof film is connected with the inside face of the insulating space of described insulating barrier, and form close property space, described independent tank cabin body is connected by wooden bearing with the inside face of the spatial accommodation of described hull inner casing, and be placed in the close property space of described splashproof film formation.
Preferably, described insulating barrier is directly connected with hull inner casing.
Preferably, described splashproof film is directly connected with described insulating barrier, and is installed by anchor fitting.
Preferably, described anchor fitting comprises base, wooden pipe link, footstock, pad and bolt, described base is connected with described hull inner casing by welding, the two ends of described wooden pipe link are connected with footstock with described base respectively, and described footstock is connected with described splashproof film with the cooperation of bolt by pad.
Preferably, the position described splashproof film being positioned at described hull inner shell bottom is also provided with strengthening membrane.
Preferably, the material of described strengthening membrane is wood based panel.
Preferably, also comprise bearing, described independent tank cabin body is connected with described hull inner casing by described bearing.
Preferably, described bearing is by the wooden one-tenth of wooden pressure-bearing.
Preferably, described splashproof film adopts low-temperature metal material to make, and described splashproof film is spliced by several piece sheet metal.
On the other hand, provide boats and ships or ocean structure, comprise above-mentioned local time screen-wall system.
By technique scheme, the present invention is applied to the local time screen-wall system of Type B independent tank and boats and ships or ocean structure and at least has following advantages and beneficial effect:
Local of the present invention time screen-wall system, because Type B independent liquid cargo tank is separated completely, therefore the impact of Type B independent tank autogenous shrinkage distortion can not be subject to, the anchor fitting of local time screen-wall system is welded on hull inner casing instead of on Type B independent tank housing, reduces the impact on Type B independent tank case material mechanical characteristics simultaneously;
According to the present invention, the installation of this local time screen-wall system, by hull inner casing, is outwards installed until splashproof film or strengthening membrane successively, and its structure is simple, easy for installation.To the hardware device of shipyard and construction process requirement relatively low, can reduce productive costs, shorten construction period, its economic benefit produced is obvious.
Accompanying drawing explanation
Fig. 1,2 is the Type B independent liquid cargo tank cargo containment system typical case drawing in side sectional elevation according to an embodiment of the invention for boats and ships (LNG ship, LEG ship, LPG ship etc.) or the floating structures (FLNG, FSRU, LNGRV etc.);
Fig. 3 is splashproof film in embodiments of the invention, insulating barrier and anchor fitting cross-sectional view;
Fig. 4 is the anchor fitting structure explanation of embodiments of the invention;
Fig. 5 is the splashproof film fixed form explanation of embodiments of the invention;
Fig. 6 is the cross-sectional view of strengthening membrane in embodiments of the invention, insulating barrier and anchor fitting;
Fig. 7 is the standoff region cross-sectional view of embodiments of the invention.
Detailed description of the invention
For further setting forth the technological means that the present invention takes for reaching predetermined goal of the invention, below in conjunction with accompanying drawing and preferred embodiment, to the detailed description of the invention of time screen-wall system of the local for Type B independent liquid cargo tank proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.But, in the degree of following explanation specific to specific embodiment of the present invention or specific use, be intended to only as exemplary purposes and the explanation of exemplary embodiment is provided simply.Therefore, the invention is not restricted to the specific embodiment of the following stated, but comprise fall into claims real thought and scope in whole interchangeable amendment and equivalent.
Embodiments of the invention are applied to the Type B independent liquid cargo tank storage tank described in IGC code, more particularly, described storage tank can be designed to the liquid normal pressure natural fuels carrying temperature about-163 DEG C, and other liquid gases are as propane, ethane, ethene or butane etc., described storage tank and embodiments of the invention coordinate, can be installed on boats and ships or the floating structures, for transport or the storage of blue gas.
Fig. 1 and Fig. 2 carries out designing according to embodiments of the invention, the typical schematic cross section of boats and ships or the floating structures, its structural arrangement has the feature of double bottom, two topside and double-deck, namely on hull inner casing 1, all aggregates are arranged in outside, to ensure that local of the present invention time screen-wall system can be attached to the inner side of hull inner casing spatial accommodation.
As in Fig. 1 and Fig. 2, system comprises insulating barrier 2, splashproof film 3 and independent tank cabin body 6.Insulating barrier 2 is directly attached on hull inner casing 1.
Splashproof film 3 is arranged on insulating barrier 2, prevents a small amount of blue gas revealed from entering insulating barrier 2 region.Divide at hull inner bottom part, splashproof film 3 is strengthened, for carrying the blue gas of a small amount of leakage.
Independent tank cabin body 6 supports independent of on hull inner casing 1 preferably by bearing 4.In Fig. 1 and Fig. 2, the quantity of bearing 4 and pattern are only signal, can accelerate according to actual conditions or increase supporting stand size.
The close property space 5 surrounded between splashproof film 3 and independent tank cabin body 6, its width need meet construction requirement, in operation process, is full of unreactable gas in this space, produces corrosion to prevent air to INT COMP.
In addition, in time screen-wall system of local of the present invention, temperature and pressure sensor is preferably furnished with.When there is gas leak, it can detect the rising of gaseous tension and the decline of splashproof film 3 surface temperature in close property space 5 in the very first time, but monitoring means is not limited thereto.
As shown in Figure 3, in an embodiment of the present invention, insulating barrier 2 realizes by foaming in place technology or prefabricate and install, and its material preferably but be not limited to polyurethane.Its thickness is determined by factors such as filled liquefied gas temperature, the requirement of rate of evaporation (BOR), the allowable temperatures of hull inner shell materials.
In addition, the low-temperature metal material that splashproof film 3 is preferably thickness about 1 to 4 millimeter is made, and its minimum design temperature should not higher than the design temperature of filled blue gas.Such as, when this storage tank loads LNG, splashproof film 3 can select 9Ni steel, 304L corrosion-resistant steel or 5083 aluminum alloys etc.
And combining as shown in Figure 5, splashproof film 3 is also fixing by multi-point support by anchor fitting 13.Anchor fitting 13 comprises base 7 and wooden pipe link 8.Wooden pipe link 8 can provide certain intensity, can play adiabatic effect simultaneously.
As shown in Figure 4, in an embodiment of the present invention, preferred anchor fitting 13 comprises base 7, wooden pipe link 8, footstock 12, pad 10 and bolt 9.Base 7 is column type sleeve, and material can be selected consistent with hull inner casing, and it is directly welded on hull inner casing 1.Footstock 12 is preferably with screw rod, and its material can be selected consistent with splashproof film 3, and footstock 12 firmly connects with pipe link top, then the pipe link with footstock is put into base and fix.
Outside splashproof film 3, be provided with metallic gasket 10 and metal bolts 9, fixed by splashproof film 3 by the cooperation of this bolt 9 and pad 10, the material of this bolt 9 and pad 10 can select or other cryogenic materials consistent with splashproof film 3.
In addition, also preferably include close property cushion film 11, its material property should not, by the impact of blue gas low temperature, be arranged between footstock 12 and splashproof film 3, ensure that the air-tightness in close property space 5.
As shown in Figure 5, in an embodiment of the present invention, splashproof film 3 covers the inside face of whole hull inner casing 1, is spliced preferably by a large amount of sheet metal.
And preferably often open thin plate and be fixed by multiple anchor fitting 13.In the present embodiment, be preferably each row up and down, about 2 to 5 meters, interval, but be not limited thereto mode.Be connected by welding, riveted joint or other any modes between thin plate with thin plate, but the air-tightness of junction must be ensured.
In an embodiment of the present invention, when there is a small amount of gas leak, the splashproof film 3 of hull top and topside does not carry the load of leakage, and the splashproof film 3 of hull bottom needs the load carrying this leakage, therefore needs to design strengthening membrane 14.
As shown in Figure 6, in an embodiment of the present invention, with the splashproof film 3 of top and topside uniquely unlike, preferably between splashproof film 3 and close property cushion film 11, add one deck high-intensity wood scutum as strengthening membrane 14, the splashproof film 3 of such bottom and strengthening membrane 14 namely can the load of liquid carrying gas leakage, also can carry simultaneously service personnel in maintenance process enter close property space 5 after various load.
As shown in Figure 7, in an embodiment of the present invention, independent tank hull 6 is located on hull inner casing 1 by bearing 4.Preferred bearing 4 is by the wooden one-tenth of wooden pressure-bearing, and its size is determined according to factors such as material conducts heat performance and bearing loads.
The bearing 4 of the wooden one-tenth of wooden pressure-bearing directly contacts with hull inner casing 1.For ensureing abundant contact, between can filling epoxy resin.
In addition, preferably also arrange cabin body base 15 between Type B independent tank cabin body 6 and bearing 4, this cabin body base 14 is connected with bearing 4.For ensureing abundant contact, between can filling epoxy resin.
In addition, in order to prevent Type B independent tank in the relative motion of hull cargo compartment, at the bracket setting up and down of bearing 4, the freedom of motion of its respective direction can be limited.Meanwhile, in conjunction with as shown in Figures 1 and 2, preferably arrange bearing 4 at top, Type B cabin, it act as under damage operating mode, prevents Type B independent tank tank body from floating.
As shown in Figure 7, in an embodiment of the present invention, bearing 4 surrounding is provided with the local circular arc 16 be closely connected with it, and this local circular arc 16 is being formed with position, bearing 4 adjacency section arc transition by splashproof film 3.
Also comprise a kind of boats and ships or ocean structure in embodiments of the invention, be provided with local described above time screen-wall system.Because above-mentioned local time screen-wall system has above-mentioned technique effect, therefore, the boats and ships or the ocean structure that are provided with this local time screen-wall system also should possess corresponding technique effect, and its specific implementation process is similar to the above embodiments, does not hereby repeat.
In sum, according to the local time screen-wall system of the present invention's design, simple for structure, easy for installation, the laid down cost of shipyard can be saved, shorten construction period.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, any professional being familiar with the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned explanation can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. one kind is applied to the local time screen-wall system of Type B independent tank, be applied to transport and store liquified gas carrier, the hull inner casing with spatial accommodation is provided with in described ship, it is characterized in that, described local time screen-wall system comprises insulating barrier, splashproof film and independent tank cabin body, described insulating barrier is connected with the inside face of the spatial accommodation of described hull inner casing, and form insulating space, described splashproof film is connected with the inside face of the insulating space of described insulating barrier, and form close property space, described independent tank cabin body is connected with the inside face of the spatial accommodation of described hull inner casing, and be placed in the close property space of described splashproof film formation.
2. local according to claim 1 time screen-wall system, it is characterized in that, described insulating barrier is directly connected with hull inner casing.
3. local according to claim 1 time screen-wall system, it is characterized in that, described splashproof film is directly connected with described insulating barrier, and is installed by anchor fitting.
4. local according to claim 3 time screen-wall system, it is characterized in that, described anchor fitting comprises base, wooden pipe link, footstock, pad and bolt, described base is connected with described hull inner casing by welding, the two ends of described wooden pipe link are connected with footstock with described base respectively, and described footstock is connected with described splashproof film with the cooperation of bolt by pad.
5. local according to claim 1 time screen-wall system, it is characterized in that, the position described splashproof film being positioned at described hull inner shell bottom is also provided with strengthening membrane.
6. strengthening membrane according to claim 5, is characterized in that, the material of described strengthening membrane is wood based panel.
7. local according to claim 1 time screen-wall system, is characterized in that, also comprise bearing, and described independent tank cabin body is connected with described hull inner casing by described bearing.
8. local according to claim 8 time screen-wall system, it is characterized in that, described bearing is by the wooden one-tenth of wooden pressure-bearing.
9. splashproof film according to claim 1, is characterized in that, described splashproof film adopts low-temperature metal material to make, and described splashproof film is spliced by several piece sheet metal.
10. boats and ships or an ocean structure, is characterized in that, comprises the local time screen-wall system described in any one of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697341.9A CN104443283B (en) | 2014-11-26 | 2014-11-26 | Local screen-wall system and ship or marine structure applied to Type B independent tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697341.9A CN104443283B (en) | 2014-11-26 | 2014-11-26 | Local screen-wall system and ship or marine structure applied to Type B independent tank |
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| CN104443283A true CN104443283A (en) | 2015-03-25 |
| CN104443283B CN104443283B (en) | 2017-12-08 |
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Cited By (9)
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| CN105270566A (en) * | 2015-10-27 | 2016-01-27 | 上海船舶研究设计院 | Semi-communication independent cargo compartment structure of asphalt ship |
| CN105923102A (en) * | 2016-06-17 | 2016-09-07 | 江苏科技大学 | Combined IMO A-type cargo containment system for ultra-low-temperature liquefied gas transport ship |
| WO2017016368A1 (en) * | 2015-07-24 | 2017-02-02 | 刘国满 | Local secondary shielding system of gas storage tank |
| CN108189970A (en) * | 2017-12-19 | 2018-06-22 | 沪东中华造船(集团)有限公司 | Large LNG ship Type B containment system support device and its installation method |
| CN111634372A (en) * | 2020-06-12 | 2020-09-08 | 江南造船(集团)有限责任公司 | Independent liquid cargo hold containment system and liquefied gas carrier |
| CN112265604A (en) * | 2020-09-18 | 2021-01-26 | 上海蓝魂环保科技有限公司 | Liquid natural gas cabin body structure |
| CN112298457A (en) * | 2020-11-06 | 2021-02-02 | 中太海事技术(上海)有限公司 | A type cabin secondary shielding for liquefied natural gas stores and protector thereof |
| WO2022028366A1 (en) * | 2020-08-03 | 2022-02-10 | 大连船舶重工集团有限公司 | Independent secondary screen wall-type b-type storage cabin |
| CN116176774A (en) * | 2023-05-04 | 2023-05-30 | 江苏新时代造船有限公司 | Marine independent cargo tank containment system |
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| WO2017016368A1 (en) * | 2015-07-24 | 2017-02-02 | 刘国满 | Local secondary shielding system of gas storage tank |
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| CN112298457A (en) * | 2020-11-06 | 2021-02-02 | 中太海事技术(上海)有限公司 | A type cabin secondary shielding for liquefied natural gas stores and protector thereof |
| CN116176774A (en) * | 2023-05-04 | 2023-05-30 | 江苏新时代造船有限公司 | Marine independent cargo tank containment system |
| CN116176774B (en) * | 2023-05-04 | 2023-09-01 | 江苏新时代造船有限公司 | Marine independent cargo tank containment system |
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