WO2019091308A1 - B-type lng hold containment system - Google Patents

B-type lng hold containment system Download PDF

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Publication number
WO2019091308A1
WO2019091308A1 PCT/CN2018/112899 CN2018112899W WO2019091308A1 WO 2019091308 A1 WO2019091308 A1 WO 2019091308A1 CN 2018112899 W CN2018112899 W CN 2018112899W WO 2019091308 A1 WO2019091308 A1 WO 2019091308A1
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WO
WIPO (PCT)
Prior art keywords
fixed
type
cargo tank
hull structure
collecting
Prior art date
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PCT/CN2018/112899
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French (fr)
Chinese (zh)
Inventor
金燕子
徐岸南
张汇平
唐永生
宋忠兵
严磊
Original Assignee
沪东中华造船(集团)有限公司
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Application filed by 沪东中华造船(集团)有限公司 filed Critical 沪东中华造船(集团)有限公司
Priority to KR1020207013153A priority Critical patent/KR102128507B1/en
Publication of WO2019091308A1 publication Critical patent/WO2019091308A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F17C13/082—Mounting arrangements for vessels for large sea-borne storage vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2231/00—Material used for some parts or elements, or for particular purposes
    • B63B2231/02—Metallic materials
    • B63B2231/04—Irons, steels or ferrous alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2231/00—Material used for some parts or elements, or for particular purposes
    • B63B2231/32—Vegetable materials or material comprising predominately vegetable material
    • B63B2231/34—Wood or wood products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0648—Alloys or compositions of metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/018—Supporting feet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/037—Handling leaked fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships

Definitions

  • the invention relates to the technical field of liquefied natural gas storage and transportation equipment, in particular to a B-type LNG tank enclosure system.
  • the liquid cargo containment systems for large LNG ships currently used in real ships are spherical tank type (MOSS), membrane type (Membrane) and SPB type.
  • the spherical tank type cargo tank is developed by Norwegian Rosenberg Company.
  • the shape of the cargo tank is spherical, the cargo tank is not loaded with liquid level limitation, the storage tank material is aluminum alloy A5083, and the outer periphery is covered by polyurethane insulating material, which has high cost and low safety.
  • the film-type cargo hold was developed by the French company GTT, and has the NO.96, Mark III and CS1 types. All three forms use a 0.7 mm thick metal film as the cargo lining, with insulation and secondary insulation.
  • the SPB cargo tank is a kind of cargo tank developed by Ishikawashima Heavy Industries (IHI). It is made of aluminum alloy and has a complex structure and high cost.
  • a type B LNG tank containment system comprising a type B cargo tank, a hull structure disposed outside the type B cargo tank, and a collecting device and a pressure receiving mechanism disposed in the empty space between the type B cargo tank and the hull structure
  • the type B cargo tank comprises an insulation layer, a leakage passage and a cargo tank body arranged in order from the outside to the inside, wherein the leakage passage is fixed with an equally spaced support block, the upper end surface of the support block and the inner side wall of the insulation layer
  • the phase fixing and the lower end surface are fixed to the outer side wall of the cargo tank body
  • the pressure receiving mechanism comprises a plurality of pressure receiving units arranged at equal intervals, and the upper end faces of each pressure receiving unit are fixed to the outer side wall of the insulating layer
  • the end faces are fixed with the hull structure; the top of the leakage passage is provided with a venting pipe which communicates with the gas main pipe outside the hull structure, and the bottom is provided with a bearing interface, and the collecting device is connected with the
  • the pressure receiving unit comprises a base and a pressure receiving wood
  • the base comprises two cross-fixed support plates and a bearing plate
  • the support plate is vertically fixed on the inner side wall of the hull structure
  • the bearing plate is fixed on the top of the supporting plate
  • the supporting wood is fixed on the upper surface of the bearing plate
  • the upper end surface of the supporting wood is fixed to the outer side wall of the insulating layer.
  • the two support plates are identical in shape and size, and each of the support plates has a rectangular plate provided with an inclined chamfered upper portion.
  • the collecting device comprises a collecting box, a control valve, a receiving tube, an ejector, a discharge tube and a temperature sensor, wherein the top of the collecting box is provided with a collecting port, and a control valve is fixed at the collecting port
  • the control valve is fixedly connected with the receiving pipe, and the receiving pipe is connected with the bearing interface at the bottom of the leakage channel; the lower end of the collecting box is provided with a discharge port, the injector is fixed at the discharge port, and the injector is fixedly connected with the discharge pipe to discharge
  • the tube extends to the exterior of the hull structure and is in communication with the liquid manifold; the temperature sensor is attached to the tank of the collecting box.
  • a hazardous gas detector is fixed to the vent tube.
  • the cargo tank body includes an inner cavity having an octagonal longitudinal section and a dome structure extending from an upper end of the inner cavity.
  • the shape of the leakage passage and the insulating layer are the same as the shape of the cargo tank body.
  • the cargo tank body is made of 9% nickel steel.
  • the collecting device is two or four, and the number of collecting devices is the same as the number of the receiving interfaces.
  • the invention has the advantages of simple structure and low cost, and solves the problem of LNG storage and leakage prevention.
  • the B type liquid cargo tank can be effectively prevented from being impacted after the collision occurs, and retained. There is enough cache space.
  • a plurality of equally spaced support blocks are arranged in the leakage channel between the insulating layer and the cargo tank body, and a pressure bearing mechanism is arranged in the empty space between the B type cargo tank and the hull structure, which can perform the B type liquid cargo tank Support, effectively prevent the movement of the B-type cargo tank and improve the anti-sloshing characteristics of the enclosure system.
  • Figure 1 is a schematic view of the structure of the present invention.
  • FIG. 2 is a schematic structural view of a susceptor.
  • 1 is the insulation layer
  • 2 is the leakage channel
  • 3 is the cargo tank body
  • 4 is the empty compartment
  • 5 is the hull structure
  • 6 is the receiving pipe
  • 7 is the control valve
  • 8 is the discharge pipe
  • 10 is the collecting box
  • 11 is the temperature sensor
  • 12 is the dangerous gas detector
  • 13 is the venting tube
  • 14 is the supporting block
  • 15 is the bearing interface
  • 16 is the pressure wood
  • 17 is the base
  • 18 is The dome structure
  • 19 is a pressure bearing unit
  • 20 is a support plate
  • 21 is a bearing plate
  • 22 is a collecting port
  • 23 is a discharge port
  • 24 is an inner cavity.
  • the B-type LNG tank enclosure system of the present invention includes a B-type cargo tank, a hull structure 5, a collecting device, and a pressure receiving mechanism.
  • the hull structure 5 is arranged on the outer side of the B type cargo tank, and the empty tank 4 is arranged between the hull structure 5 and the B type cargo tank, and the collecting device and the pressure receiving mechanism are all arranged in the empty tank; the hull structure 4 and the B type cargo tank
  • the empty compartment 4 is provided to effectively prevent the B-type cargo tank from being impacted after the collision, so that it has enough buffer space.
  • the collecting device is mainly used to prevent leakage of LNG.
  • the pressure-bearing mechanism is mainly used to support the B-type cargo tank and improve the anti-sloshing characteristics of the enclosure system.
  • the type B cargo tank includes an insulation layer 1, a leakage passage 2 and a cargo tank body 3 which are disposed in order from the outside to the inside.
  • the shape of the leakage passage 2 and the insulation layer 1 are the same as the shape of the cargo tank body 3, and the leakage passage 2
  • the top portion is provided with a gas permeable pipe 13 communicating with a gas main pipe outside the hull structure, and a bottom portion is provided with a socket 15, and the collecting device is in communication with the socket 15 .
  • the longitudinal section of the body cavity 24 of the cargo tank body is octagonal and the upper end of the inner cavity extends outwardly to have a dome structure 18.
  • the leakage passage 2 Since the shape of the leaking passage 2 is the same as the shape of the cargo tank body 3, the leakage passage is The top of 2 also has a dome structure. When a small amount of leakage occurs, the leaked natural gas evaporates and condenses to the dome structure at the top of the leak passage 2, and is discharged from the vent pipe 13 into the gas manifold.
  • a plurality of equally spaced support blocks 14 are fixed in the leakage channel 2. The upper end surface of the support block 14 is fixed to the inner side wall of the insulating layer 1, and the lower end surface is fixed to the outer side wall of the cargo tank body 3.
  • a hazardous gas detector 12 can be attached to the venting tube 13 for real-time detection of the leaked gas.
  • the material of the cargo tank that requires direct contact with the LNG liquid can meet the requirements of low temperature plasticity, and can overcome the expansion and contraction problem from normal temperature to low temperature; and the selection of insulation materials should consider the cargo compartment. Structural types and required evaporation rates and other issues.
  • the cargo tank body 3 is made of 9% nickel steel, and the insulating material in the insulating layer is made of polyurethane foam.
  • the heat insulating material is mainly installed at the bottom and the side of the cargo tank, which not only satisfies the high heat preservation performance, It can also withstand the strength and rigidity of the construction load.
  • a pressure-receiving mechanism may be provided at the bottom of the Type B cargo tank (ie, the pressure-bearing mechanism is fixed in the empty tank between the Type B cargo tank and the hull structure), the pressure-receiving mechanism includes several The pressure receiving units 19 are equally spaced, and the upper end faces of each of the pressure receiving units 19 are fixed to the outer side walls of the insulating layer 1, and the lower end faces are fixed to the hull structure 5.
  • the pressure receiving unit 19 includes a base 17 and a pressure receiving wood 16, and the base 17 is composed of two cross-fixed support plates 20 and a bearing plate 21, and the shape and size of the two support plates 20 are completely
  • the two support plates 20 each adopt a rectangular plate provided with an inclined chamfer at the upper portion.
  • the two support plates 20 are vertically fixed on the inner side wall of the hull structure 5, and the bearing plate 21 is fixed on the top of the two support plates 20.
  • the bearing plate 21 and the two support plates 20 are perpendicular to each other, and the pressure is supported.
  • the wood 16 is fixed to the upper surface of the pressure receiving plate 21, and the upper end surface of the pressure receiving wood 16 is fixed to the outer side wall of the insulating layer 1.
  • the bottom of the leakage channel 2 is provided with a plurality of receiving interfaces 15, the number of collecting devices being the same as the number of the receiving interfaces 15, and preferably, the receiving interfaces 15 can be arranged in two or four, each receiving port 15
  • a collecting device is fixed.
  • the collecting device comprises a collecting box 10, a control valve 7, a receiving tube 6, an ejector 9, a discharge tube 8 and a temperature sensor 11, and a collecting port 22 is opened at the top of the collecting box 10, and the collecting port 22 is opened.
  • a control valve 7 is fixed, the control valve 7 is fixedly connected with the receiving pipe 6, and the receiving pipe 6 is in communication with the bearing port 15 at the bottom of the leakage passage, and the control valve 7 can control the opening and closing of the collecting device.
  • the lower end of the collecting box 10 is provided with a discharge port 23, and an ejector 9 is fixed at the discharge port 23, and the ejector 9 is fixedly connected with the discharge pipe 8, and the discharge pipe 8 extends to the outside of the hull structure and communicates with the liquid main pipe;
  • the temperature sensor 11 is fixed to the casing of the collecting box 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Disclosed is a B-type LNG hold containment system, comprising a B-type liquid cargo hold, a ship hull structure (5) provided outside the B-type liquid cargo hold, and a holding device and a pressure confining mechanism provided in an empty hold between the B-type liquid cargo hold and the ship hull structure. The B-type liquid cargo hold comprises an insulating layer (1), a leakage channel (2) and a liquid cargo hold body (3) provided successively from the outside to the inside. Support blocks (14) distributed equidistantly are fixed in the leakage channel (2). The top of the leakage channel (2) is provided with a vent pipe (13) communicating with a gas main pipe outside the ship hull structure, the bottom is provided with a bearing interface (15), and the holding device communicates with the bearing interface (15). The containment system has a simple structure, is low in cost, is reliable in terms of safety, and effectively solves the problems of storage and leakage prevention.

Description

一种B型LNG舱围护***B type LNG cabin enclosure system 技术领域Technical field
本发明涉及液化天然气储运设备技术领域，特别是涉及一种B型LNG舱围护***。The invention relates to the technical field of liquefied natural gas storage and transportation equipment, in particular to a B-type LNG tank enclosure system.
背景技术Background technique
液化天然气作为一种绿色、清洁、高热值的能源，在我国的需求量呈快速增长趋势，供需缺口迅速扩大。因此，通过从海外引进天然气资源，调整能源结构，弥补能源短缺，满足日益加快的国民经济发展对于新兴能源的需求，成为我国实施能源战略的重要决策。然而液化天然气是在超低温、零下163℃的状态下进行储充的，因此，货舱的结构型式就显得非常重要。As a green, clean and high-calorific energy source, LNG demand is growing rapidly in China, and the gap between supply and demand is rapidly expanding. Therefore, by introducing natural gas resources from overseas, adjusting the energy structure, making up for energy shortages, and meeting the increasing demand for emerging energy in the national economy, it has become an important decision in China's energy strategy. However, liquefied natural gas is stored at an ultra-low temperature of minus 163 ° C. Therefore, the structural type of the cargo tank is very important.
目前实船应用的大型LNG船的液货围护***有球罐型(MOSS)、薄膜型(Membrane)和SPB型。球罐型货舱由挪威Rosenberg公司研发，货舱储罐形状为球形，货舱无装载液位限制，储罐材料为铝合金A5083，***被聚氨酯绝缘材料覆盖，造价很高，安全性低。薄膜型货舱由法国GTT公司研发，有NO.96型、Mark III型和CS1型，这三种形式均应用了0.7毫米厚的金属薄膜作为货舱内衬、配有绝缘材料和二次隔离层，各层之间互相固定后，与船壳紧密相连，但金属薄膜承受液货晃荡载荷能力有限，且货舱结构型式复杂，建造周期很长。SPB型货舱是由日本石川岛播磨重工(IHI)研发的一种货舱形式，由铝合金建造的筋板结构，货舱结构型式复杂，造价很高。The liquid cargo containment systems for large LNG ships currently used in real ships are spherical tank type (MOSS), membrane type (Membrane) and SPB type. The spherical tank type cargo tank is developed by Norwegian Rosenberg Company. The shape of the cargo tank is spherical, the cargo tank is not loaded with liquid level limitation, the storage tank material is aluminum alloy A5083, and the outer periphery is covered by polyurethane insulating material, which has high cost and low safety. The film-type cargo hold was developed by the French company GTT, and has the NO.96, Mark III and CS1 types. All three forms use a 0.7 mm thick metal film as the cargo lining, with insulation and secondary insulation. After the layers are fixed to each other, they are closely connected with the hull, but the metal film is limited in its ability to withstand sloshing loads, and the structure of the cargo hold is complex and the construction period is long. The SPB cargo tank is a kind of cargo tank developed by Ishikawashima Heavy Industries (IHI). It is made of aluminum alloy and has a complex structure and high cost.
发明内容Summary of the invention
本发明的目的是克服现有技术的不足，设计出一种B型LNG舱围护系 统。It is an object of the present invention to overcome the deficiencies of the prior art and to design a B-type LNG tank containment system.
为达到上述目的，本发明所采用的技术方案是：In order to achieve the above object, the technical solution adopted by the present invention is:
一种B型LNG舱围护***，包括B型液货舱、设置在B型液货舱外侧的船体结构以及设置在B型液货舱和船体结构之间的空舱内的集纳装置和承压机构，所述B型液货舱包括从外到内依次设置的绝缘层、泄漏通道和液货舱本体，所述泄漏通道内固定有等间距分布的支撑块，支撑块的上端面与绝缘层的内侧壁相固定、下端面与液货舱本体的外侧壁相固定，所述承压机构包括若干个等间距分布的承压单元，每个承压单元的上端面均与绝缘层的外侧壁相固定、下端面均与船体结构相固定；所述泄漏通道的顶部设置有与船体结构外部的气体总管相连通的透气管、底部开设有承接口，集纳装置与承接口相连通。A type B LNG tank containment system comprising a type B cargo tank, a hull structure disposed outside the type B cargo tank, and a collecting device and a pressure receiving mechanism disposed in the empty space between the type B cargo tank and the hull structure The type B cargo tank comprises an insulation layer, a leakage passage and a cargo tank body arranged in order from the outside to the inside, wherein the leakage passage is fixed with an equally spaced support block, the upper end surface of the support block and the inner side wall of the insulation layer The phase fixing and the lower end surface are fixed to the outer side wall of the cargo tank body, and the pressure receiving mechanism comprises a plurality of pressure receiving units arranged at equal intervals, and the upper end faces of each pressure receiving unit are fixed to the outer side wall of the insulating layer The end faces are fixed with the hull structure; the top of the leakage passage is provided with a venting pipe which communicates with the gas main pipe outside the hull structure, and the bottom is provided with a bearing interface, and the collecting device is connected with the bearing interface.
作为优选地，所述承压单元包括基座和承压木，所述基座包括两个十字交叉固定的支撑板和一个承压板，所述支撑板垂直固定在船体结构的内侧壁上，承压板固定在支撑板的顶部，所述承压木固定在承压板的上表面，承压木的上端面与绝缘层的外侧壁相固定。Preferably, the pressure receiving unit comprises a base and a pressure receiving wood, the base comprises two cross-fixed support plates and a bearing plate, the support plate is vertically fixed on the inner side wall of the hull structure, The bearing plate is fixed on the top of the supporting plate, and the supporting wood is fixed on the upper surface of the bearing plate, and the upper end surface of the supporting wood is fixed to the outer side wall of the insulating layer.
作为优选地，两个支撑板的形状和大小完全相同，每个支撑板均采用上部设置有倾斜倒角的矩形板。Preferably, the two support plates are identical in shape and size, and each of the support plates has a rectangular plate provided with an inclined chamfered upper portion.
作为优选地，所述集纳装置包括集纳箱、控制阀、承接管、喷射器、排出管和温度传感器，所述集纳箱的顶部开设有集纳口，集纳口处固定有控制阀，控制阀与承接管固定连接，承接管与泄漏通道底部的承接口相连通；所述集纳箱的下端开设有排出口，排出口处固定有喷射器，喷射器与排出管固定连接，排出管延伸至船体结构的外部并 与液体总管相连通；所述温度传感器固定在集纳箱的箱体上。Preferably, the collecting device comprises a collecting box, a control valve, a receiving tube, an ejector, a discharge tube and a temperature sensor, wherein the top of the collecting box is provided with a collecting port, and a control valve is fixed at the collecting port The control valve is fixedly connected with the receiving pipe, and the receiving pipe is connected with the bearing interface at the bottom of the leakage channel; the lower end of the collecting box is provided with a discharge port, the injector is fixed at the discharge port, and the injector is fixedly connected with the discharge pipe to discharge The tube extends to the exterior of the hull structure and is in communication with the liquid manifold; the temperature sensor is attached to the tank of the collecting box.
作为优选地，所述透气管上固定有危险气体探测器。Preferably, a hazardous gas detector is fixed to the vent tube.
作为优选地，所述液货舱本体包括纵截面为八边形的内腔以及从内腔的上端延伸出的穹顶结构。Preferably, the cargo tank body includes an inner cavity having an octagonal longitudinal section and a dome structure extending from an upper end of the inner cavity.
作为优选地，泄露通道和绝缘层的形状与液货舱本体的形状相同。Preferably, the shape of the leakage passage and the insulating layer are the same as the shape of the cargo tank body.
作为优选地，所述液货舱本体采用9％镍钢制成。Preferably, the cargo tank body is made of 9% nickel steel.
作为优选地，所述集纳装置为两个或四个，集纳装置的数量与承接口的数量相同。Preferably, the collecting device is two or four, and the number of collecting devices is the same as the number of the receiving interfaces.
本发明的积极有益效果：Positive beneficial effects of the invention:
1、本发明结构简单、成本低廉，解决了LNG储存和防泄露的问题，通过在B型液货舱和船体结构之间设置空舱，可以有效地防止碰撞发生后B型液货舱受到冲击，保留有足够的缓存空间。1. The invention has the advantages of simple structure and low cost, and solves the problem of LNG storage and leakage prevention. By providing a hollow space between the B type cargo tank and the hull structure, the B type liquid cargo tank can be effectively prevented from being impacted after the collision occurs, and retained. There is enough cache space.
2、在绝缘层和液货舱本体之间的泄漏通道内设置多个等间距分布的支撑块，B型液货舱和船体结构之间的空舱内设置承压机构，能够对B型液货舱进行支撑，有效地防止B型液货舱移动，提高围护***的抗晃荡特性。2. A plurality of equally spaced support blocks are arranged in the leakage channel between the insulating layer and the cargo tank body, and a pressure bearing mechanism is arranged in the empty space between the B type cargo tank and the hull structure, which can perform the B type liquid cargo tank Support, effectively prevent the movement of the B-type cargo tank and improve the anti-sloshing characteristics of the enclosure system.
3、在B型液货舱和船体结构之间的空舱内设置两个或四个防止LNG泄露的集纳装置，即使有泄露，泄露的LNG会通过集纳装置上的喷射器输送至甲板上的液体总管中，保证了船体结构的安全性，提高了整个围护***的可靠性，具有很高的实用价值。3. Two or four collecting devices for preventing leakage of LNG are placed in the empty space between the type B cargo tank and the hull structure. Even if there is leakage, the leaked LNG will be transported to the deck through the ejector on the collecting device. In the liquid manifold, the safety of the hull structure is ensured, the reliability of the entire enclosure system is improved, and the utility model has high practical value.
附图说明DRAWINGS
图1为本发明的结构示意图。Figure 1 is a schematic view of the structure of the present invention.
图2为基座的结构示意图。2 is a schematic structural view of a susceptor.
图中标号的具体含义为：1为绝缘层，2为泄漏通道，3为液货舱本 体，4为空舱，5为船体结构，6为承接管，7为控制阀，8为排出管，9为喷射器，10为集纳箱，11为温度传感器，12为危险气体探测器，13为透气管，14为支撑块，15为承接口，16为承压木，17为基座，18为穹顶结构，19为承压单元，20为支撑板，21为承压板，22为集纳口，23为排出口,24为内腔。The specific meanings of the numbers in the figure are: 1 is the insulation layer, 2 is the leakage channel, 3 is the cargo tank body, 4 is the empty compartment, 5 is the hull structure, 6 is the receiving pipe, 7 is the control valve, 8 is the discharge pipe, 9 For the injector, 10 is the collecting box, 11 is the temperature sensor, 12 is the dangerous gas detector, 13 is the venting tube, 14 is the supporting block, 15 is the bearing interface, 16 is the pressure wood, 17 is the base, 18 is The dome structure, 19 is a pressure bearing unit, 20 is a support plate, 21 is a bearing plate, 22 is a collecting port, 23 is a discharge port, and 24 is an inner cavity.
具体实施方式Detailed ways
为使本发明的目的、技术方案和优点更加清楚明了，下面通过附图中示出的具体实施例来描述本发明。但是应该理解，这些描述只是示例性的，而并非要限制本发明的范围。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要地混淆本发明的概念。The present invention will be described below by way of specific embodiments shown in the accompanying drawings. However, it should be understood that the description is only illustrative, and is not intended to limit the scope of the invention. In addition, descriptions of well-known structures and techniques are omitted in the following description in order to avoid unnecessarily obscuring the inventive concept.
结合图1、图2说明本实施方式，本发明的B型LNG舱围护***，包括B型液货舱、船体结构5、集纳装置和承压机构。船体结构5设置在B型液货舱的外侧，船体结构5和B型液货舱之间设置有空舱4，集纳装置和承压机构均设置在空舱内；船体结构4和B型液货舱之间设置的空舱4，能够有效地防止碰撞发生后B型液货舱受到冲击，使其保留有足够的缓存空间。集纳装置主要用于防止LNG泄露，当有泄露发生时，泄露的LNG会通过B型液货舱内部的泄露通道流入集纳装置，并通过集纳装置的上的喷射器输送至甲板上的液体总管中，从而保证船体结构的安全性，提高整个围护***的可靠性。承压机构主要用于对B型液货舱进行支撑，提高围护***的抗晃荡特性。The present embodiment is described with reference to Figs. 1 and 2, and the B-type LNG tank enclosure system of the present invention includes a B-type cargo tank, a hull structure 5, a collecting device, and a pressure receiving mechanism. The hull structure 5 is arranged on the outer side of the B type cargo tank, and the empty tank 4 is arranged between the hull structure 5 and the B type cargo tank, and the collecting device and the pressure receiving mechanism are all arranged in the empty tank; the hull structure 4 and the B type cargo tank The empty compartment 4 is provided to effectively prevent the B-type cargo tank from being impacted after the collision, so that it has enough buffer space. The collecting device is mainly used to prevent leakage of LNG. When a leak occurs, the leaked LNG flows into the collecting device through the leaking passage inside the B-type cargo tank, and is transported to the liquid on the deck through the injector on the collecting device. In the main pipe, the safety of the hull structure is ensured and the reliability of the entire enclosure system is improved. The pressure-bearing mechanism is mainly used to support the B-type cargo tank and improve the anti-sloshing characteristics of the enclosure system.
所述B型液货舱包括从外到内依次设置的绝缘层1、泄漏通道2和液货舱本体3，泄露通道2和绝缘层1的形状与液货舱本体3的形状相同，所述泄漏通道2的顶部设置有与船体结构外部的气体总管相连通的透气管13、底部开设有承接口15，集纳装置与承接口15相连通。所述液货舱本体内腔24的纵截面为八边形且其内腔的上端向外 延伸出有一个穹顶结构18，由于泄露通道2的形状与液货舱本体3的形状相同，因此，泄漏通道2的顶部也有一个穹顶结构，当发生少量泄露时，泄露的天然气会蒸发凝聚至泄漏通道2顶部的穹顶结构，并从透气管13排入气体总管。所述泄漏通道2内固定有多个等间距分布的支撑块14，支撑块14的上端面与绝缘层1的内侧壁相固定、下端面与液货舱本体3的外侧壁相固定。为了增加围护***的安全性能，可在透气管13上固定危险气体探测器12，以对泄露的气体进行实时探测。The type B cargo tank includes an insulation layer 1, a leakage passage 2 and a cargo tank body 3 which are disposed in order from the outside to the inside. The shape of the leakage passage 2 and the insulation layer 1 are the same as the shape of the cargo tank body 3, and the leakage passage 2 The top portion is provided with a gas permeable pipe 13 communicating with a gas main pipe outside the hull structure, and a bottom portion is provided with a socket 15, and the collecting device is in communication with the socket 15 . The longitudinal section of the body cavity 24 of the cargo tank body is octagonal and the upper end of the inner cavity extends outwardly to have a dome structure 18. Since the shape of the leaking passage 2 is the same as the shape of the cargo tank body 3, the leakage passage is The top of 2 also has a dome structure. When a small amount of leakage occurs, the leaked natural gas evaporates and condenses to the dome structure at the top of the leak passage 2, and is discharged from the vent pipe 13 into the gas manifold. A plurality of equally spaced support blocks 14 are fixed in the leakage channel 2. The upper end surface of the support block 14 is fixed to the inner side wall of the insulating layer 1, and the lower end surface is fixed to the outer side wall of the cargo tank body 3. In order to increase the safety of the containment system, a hazardous gas detector 12 can be attached to the venting tube 13 for real-time detection of the leaked gas.
由于LNG是-163℃的超低温液体，所以要求与LNG液体直接接触的货舱的材料能够满足低温塑性的要求，而且能克服由常温降至低温时的胀缩问题；且保温材料的选择要考虑货舱结构型式和要求的蒸发率等问题。在本实施例中，所述液货舱本体3采用9％镍钢制成，绝缘层中的保温材料采用聚氨酯泡沫，保温材料主要装设在液货舱底部及侧部，不仅满足了高保温性能，也能够承受施工载重的强度与刚性。Since LNG is a cryogenic liquid of -163 ° C, the material of the cargo tank that requires direct contact with the LNG liquid can meet the requirements of low temperature plasticity, and can overcome the expansion and contraction problem from normal temperature to low temperature; and the selection of insulation materials should consider the cargo compartment. Structural types and required evaporation rates and other issues. In the embodiment, the cargo tank body 3 is made of 9% nickel steel, and the insulating material in the insulating layer is made of polyurethane foam. The heat insulating material is mainly installed at the bottom and the side of the cargo tank, which not only satisfies the high heat preservation performance, It can also withstand the strength and rigidity of the construction load.
为了对B型液货舱进行支撑，可在B型液货舱的底部设置承压机构(即承压机构固定在B型液货舱和船体结构之间的空舱内)，所述承压机构包括若干个等间距分布的承压单元19，每个承压单元19的上端面均与绝缘层1的外侧壁相固定、下端面均与船体结构5相固定。所述承压单元19包括基座17和承压木16，所述基座17由两个十字交叉固定的支撑板20和一个承压板21构成，这两个支撑板20的形状和大小完全相同，在本实施例中，这两个支撑板20均采用上部设置有倾斜倒角的矩形板。所述两个支撑板20垂直固定在船体结构5 的内侧壁上，承压板21固定在两个支撑板20的顶部，承压板21与这两个支撑板20相互垂直，所述承压木16固定在承压板21的上表面，承压木16的上端面与绝缘层1的外侧壁相固定。In order to support the B-type cargo tank, a pressure-receiving mechanism may be provided at the bottom of the Type B cargo tank (ie, the pressure-bearing mechanism is fixed in the empty tank between the Type B cargo tank and the hull structure), the pressure-receiving mechanism includes several The pressure receiving units 19 are equally spaced, and the upper end faces of each of the pressure receiving units 19 are fixed to the outer side walls of the insulating layer 1, and the lower end faces are fixed to the hull structure 5. The pressure receiving unit 19 includes a base 17 and a pressure receiving wood 16, and the base 17 is composed of two cross-fixed support plates 20 and a bearing plate 21, and the shape and size of the two support plates 20 are completely In the same embodiment, in the embodiment, the two support plates 20 each adopt a rectangular plate provided with an inclined chamfer at the upper portion. The two support plates 20 are vertically fixed on the inner side wall of the hull structure 5, and the bearing plate 21 is fixed on the top of the two support plates 20. The bearing plate 21 and the two support plates 20 are perpendicular to each other, and the pressure is supported. The wood 16 is fixed to the upper surface of the pressure receiving plate 21, and the upper end surface of the pressure receiving wood 16 is fixed to the outer side wall of the insulating layer 1.
泄漏通道2的底部开设有多个承接口15，集纳装置的数量与承接口15的数量相同，作为优选地，所述承接口15可以设置为两个或四个，每个承接口15处均固定有一个集纳装置。所述集纳装置包括集纳箱10、控制阀7、承接管6、喷射器9、排出管8和温度传感器11，所述集纳箱10的顶部开设有集纳口22，集纳口22处固定有控制阀7，控制阀7与承接管6固定连接，承接管6与泄漏通道底部的承接口15相连通，控制阀7可控制集纳装置的开闭。所述集纳箱10的下端开设有排出口23，排出口23处固定有喷射器9，喷射器9与排出管8固定连接，排出管8延伸至船体结构的外部并与液体总管相连通；所述温度传感器11固定在集纳箱10的箱体上。当有大量LNG泄露时，泄露的液体可通过泄漏通道2流至其底部，并从承接口15流入集纳装置，然后通过集纳装置的喷射器9输送至甲板上的液体总管，这样，保证了船体结构的安全性，提高了整个围护***的可靠性，具有很高的实用价值。The bottom of the leakage channel 2 is provided with a plurality of receiving interfaces 15, the number of collecting devices being the same as the number of the receiving interfaces 15, and preferably, the receiving interfaces 15 can be arranged in two or four, each receiving port 15 A collecting device is fixed. The collecting device comprises a collecting box 10, a control valve 7, a receiving tube 6, an ejector 9, a discharge tube 8 and a temperature sensor 11, and a collecting port 22 is opened at the top of the collecting box 10, and the collecting port 22 is opened. A control valve 7 is fixed, the control valve 7 is fixedly connected with the receiving pipe 6, and the receiving pipe 6 is in communication with the bearing port 15 at the bottom of the leakage passage, and the control valve 7 can control the opening and closing of the collecting device. The lower end of the collecting box 10 is provided with a discharge port 23, and an ejector 9 is fixed at the discharge port 23, and the ejector 9 is fixedly connected with the discharge pipe 8, and the discharge pipe 8 extends to the outside of the hull structure and communicates with the liquid main pipe; The temperature sensor 11 is fixed to the casing of the collecting box 10. When there is a large amount of LNG leakage, the leaked liquid can flow to the bottom through the leak passage 2, and flow from the bearing port 15 into the collecting device, and then through the ejector 9 of the collecting device to the liquid manifold on the deck, thus ensuring The safety of the hull structure improves the reliability of the entire enclosure system and has high practical value.
最后应当说明的是：以上实施例仅用以说明本发明的技术方案而非对其限制；尽管参照较佳实施例对本发明进行了详细的说明，所属领域的普通技术人员应当理解；依然可以对本发明的具体实施方式进行修改或者对部分技术特征进行等同替换；而不脱离本发明技术方案的精神，其均应涵盖在本发明请求保护的技术方案范围当中。It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to be limiting; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand The invention is not limited to the spirit of the technical solutions of the present invention, and should be included in the scope of the technical solutions claimed in the present invention.

Claims (9)

  1. 一种B型LNG舱围护***,其特征在于，包括B型液货舱、设置在B型液货舱外侧的船体结构(5)以及设置在B型液货舱和船体结构之间的空舱内的集纳装置和承压机构，所述B型液货舱包括从外到内依次设置的绝缘层(1)、泄漏通道(2)和液货舱本体(3)，所述泄漏通道(2)内固定有等间距分布的支撑块(14)，支撑块(14)的上端面与绝缘层(1)的内侧壁相固定、下端面与液货舱本体(3)的外侧壁相固定，所述承压机构包括若干个等间距分布的承压单元(19)，每个承压单元(19)的上端面均与绝缘层(1)的外侧壁相固定、下端面均与船体结构(5)相固定；所述泄漏通道(2)的顶部设置有与船体结构外部的气体总管相连通的透气管(13)、底部开设有承接口(15)，集纳装置与承接口(15)相连通。A type B LNG tank enclosure system comprising a type B cargo tank, a hull structure (5) disposed outside the type B cargo tank, and an empty space disposed between the type B cargo tank and the hull structure a collecting device and a pressure receiving mechanism, the type B cargo tank comprising an insulating layer (1), a leaking passage (2) and a cargo tank body (3) arranged in order from the outside to the inside, wherein the leaking passage (2) is fixed An equally spaced support block (14) having an upper end surface fixed to the inner side wall of the insulating layer (1) and a lower end surface fixed to the outer side wall of the cargo tank body (3), said bearing The mechanism comprises a plurality of equally spaced pressure receiving units (19), the upper end faces of each pressure receiving unit (19) are fixed to the outer side wall of the insulating layer (1), and the lower end faces are fixed to the hull structure (5) The top of the leakage passage (2) is provided with a gas permeable pipe (13) communicating with a gas manifold outside the hull structure, and a bottom receiving port (15), and the collecting device is in communication with the socket (15).
  2. 根据权利要求1所述的B型LNG舱围护***，其特征在于，所述承压单元(19)包括基座(17)和承压木(16)，所述基座(17)包括两个十字交叉固定的支撑板(20)和一个承压板(21)，所述支撑板(20)垂直固定在船体结构(5)的内侧壁上，承压板(21)固定在支撑板(20)的顶部，所述承压木(16)固定在承压板(21)的上表面，承压木(16)的上端面与绝缘层(1)的外侧壁相固定。A type B LNG cabin containment system according to claim 1, wherein said pressure receiving unit (19) comprises a base (17) and a pressure receiving wood (16), said base (17) comprising two a cross-fixed support plate (20) and a bearing plate (21), the support plate (20) is vertically fixed on the inner side wall of the hull structure (5), and the bearing plate (21) is fixed on the support plate ( At the top of 20), the pressure-bearing wood (16) is fixed on the upper surface of the bearing plate (21), and the upper end surface of the pressure-bearing wood (16) is fixed to the outer side wall of the insulating layer (1).
  3. 根据权利要求2所述的B型LNG舱围护***，其特征在于，两个支撑板的形状和大小完全相同，每个支撑板均采用上部设置有倾斜倒角的矩形板。The B-type LNG tank enclosure system according to claim 2, wherein the two support plates are identical in shape and size, and each of the support plates is formed by a rectangular plate having an inclined chamfered upper portion.
  4. 根据权利要求1所述的B型LNG舱围护***，其特征在于，所述集纳 装置包括集纳箱(10)、控制阀(7)、承接管(6)、喷射器(9)、排出管(8)和温度传感器(11)，所述集纳箱(10)的顶部开设有集纳口(22)，集纳口(22)处固定有控制阀(7)，控制阀(7)与承接管(6)固定连接，承接管(6)与泄漏通道底部的承接口(15)相连通；所述集纳箱(10)的下端开设有排出口(23)，排出口(23)处固定有喷射器(9)，喷射器(9)与排出管(8)固定连接，排出管(8)延伸至船体结构的外部并与液体总管相连通；所述温度传感器(11)固定在集纳箱(10)的箱体上。The B-type LNG tank enclosure system according to claim 1, wherein the collecting device comprises a collecting box (10), a control valve (7), a receiving tube (6), an injector (9), The discharge pipe (8) and the temperature sensor (11), the top of the collecting box (10) is provided with a collecting port (22), and the control valve (7) is fixed at the collecting port (22), and the control valve (7) ) is fixedly connected with the receiving pipe (6), and the receiving pipe (6) is connected with the bearing interface (15) at the bottom of the leakage passage; the lower end of the collecting box (10) is provided with a discharging port (23), and the discharging port (23) An ejector (9) is fixed, the ejector (9) is fixedly connected to the discharge pipe (8), and the discharge pipe (8) extends to the outside of the hull structure and communicates with the liquid manifold; the temperature sensor (11) is fixed On the box of the collection box (10).
  5. 根据权利要求1所述的B型LNG舱围护***，其特征在于，所述透气管(13)上固定有危险气体探测器(12)。The B-type LNG tank enclosure system according to claim 1, characterized in that the gas permeable pipe (13) is fixed with a dangerous gas detector (12).
  6. 根据权利要求1所述的B型LNG舱围护***，其特征在于，所述液货舱本体(3)包括纵截面为八边形的内腔(24)以及从内腔的上端延伸出的穹顶结构(18)。The B-type LNG tank enclosure system according to claim 1, wherein the cargo tank body (3) comprises an inner cavity (24) having an octagonal longitudinal section and a dome extending from an upper end of the inner cavity Structure (18).
  7. 根据权利要求6所述的B型LNG舱围护***，其特征在于，泄露通道(2)和绝缘层(1)的形状与液货舱本体(3)的形状相同。The B-type LNG tank enclosure system according to claim 6, wherein the leakage passage (2) and the insulating layer (1) have the same shape as the cargo tank body (3).
  8. 根据权利要求7所述的B型LNG舱围护***，其特征在于，所述液货舱本体(3)采用9％镍钢制成。The B-type LNG tank containment system according to claim 7, characterized in that the cargo tank body (3) is made of 9% nickel steel.
  9. 根据权利要求1所述的B型LNG舱围护***，其特征在于，所述集纳装置为两个或四个，集纳装置的数量与承接口的数量相同。The B-type LNG tank containment system according to claim 1, wherein the collecting device is two or four, and the number of collecting devices is the same as the number of the receiving interfaces.
PCT/CN2018/112899 2017-11-10 2018-10-31 B-type lng hold containment system WO2019091308A1 (en)

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