2125results about "For bulk goods" patented technology

To provide a system, a method, and an application for carbon recovery system for compact type vessel based on connection between methanol reforming and high-efficiency membrane separation.SOLUTION: Propulsive power is supplied to a vessel by using a methanol aqueous solution as a raw material through steps such as reforming, separation of a reformate product, and hydrogen combustion, hydrogen fuel is manufactured through methanol steam reforming, anxiety about safety of high pressure hydrogen storage in a prior art is eliminated, efficient carbon recovery is carried out by storing separated carbon dioxide by compression and liquefying, heat is supplied for methanol steam reforming and preheating of the fuel by using excess heat of discharged flue gas, and comprehensive use of energy is achieved. Use of hydrogen energy is realized by a vessel without requiring storage and transportation of hydrogen, and a shipping industry contributes to green, low carbon, and sustainable development.SELECTED DRAWING: Figure 1

The invention belongs to the field of liquefied gas ships, and particularly relates to a gas test method of a liquefied carbon dioxide liquid cargo system for a ship. Comprising the following steps: drying a cargo hold space; liquid cargo tank and pipeline drying; pressurizing a liquid cargo pipeline; liquid cargo tank gas replacement; pressurizing the liquid cargo tank and the ventilation system; a liquid cargo tank cold tank; loading in a liquid cargo tank; testing the liquid cargo pump; unloading the liquid cargo tank; sweeping the liquid cargo tank; discharging the loading pipeline; heating the liquid collecting well; heating and ventilating the liquid cargo tank. According to the invention, the gas test process of the marine liquefied carbon dioxide liquid cargo system is simplified, and the operation efficiency is improved; before the liquid cargo tank gas replacement, pressurization and tank cooling are carried out, all the liquid phase pipelines are pressurized through dry gas, the gas test of the marine liquefied carbon dioxide liquid cargo system is carried out under the semi-cooling and semi-pressure condition, and the efficiency and safety of gas test operation are improved.

The invention discloses a device for slowing down sloshing of a liquid tank. The device comprises the liquid tank, a linear guide rail sliding mechanism, a combined swash plate device and an automatic springback swash plate device. According to the device for slowing down the sloshing of the liquid tank, a double-sloshing-reduction method is adopted, firstly, the amplitude of the sloshing wave height of the free liquid surface and the kinetic energy of liquid sloshing are weakened in the middle of the liquid tank by means of the automatic rebound swash plate device; liquid sloshing energy is dissipated by means of holes of the combined swash plate device for liquid to enter and exit from the bulkhead, direct action of free surface movement of the liquid on the side wall of the liquid tank is hindered, impact load of liquid sloshing on the bulkhead is reduced, and the phenomena of top rushing and jet flow caused by climbing along the bulkhead are inhibited. Meanwhile, the position of the combined oscillation suppression plate device can be adjusted by means of the linear guide rail sliding mechanism, the energy of liquid oscillation can be dissipated to the maximum extent, meanwhile, the inherent frequency of the liquid tank is changed, resonance can be effectively avoided, and therefore the wave absorption and stabilization effects of the oscillation suppression device can be better exerted.

Disclosed herein is a gas purging system for ships having an engine fueled by fuel gas. The gas purging system includes: a fuel supply line along which fuel gas is supplied to the engine; a gas valve unit disposed on the fuel supply line to control a pressure of the fuel gas; and a purge line along which nitrogen gas is supplied to the engine to purge an interior of the engine and an interior of the fuel supply line, wherein the nitrogen gas is directly supplied to the engine along the purge line, purges the interior of the engine and the fuel supply line, and is discharged to outside atmosphere through the gas valve unit.

A system and method by which energy from ocean waves is converted into hydrogen, and that hydrogen is used to manifest electrical and mechanical energies by an energy consuming device. A portion of the generated electrical power is communicated to water electrolyzers which produce oxygen and hydrogen from water as gases. At least a portion of the generated hydrogen gas is transferred to a transportation ship via a hose-carrying, remotely operated (or otherwise unmanned) vehicle, and subsequently transferred to an energy-consuming module or infrastructure, where a portion of the hydrogen is consumed in order to manifest a generation of electrical energy, a mechanical motion, and / or a chemical reaction.

The invention provides an aerogel improved honeycomb polyurethane heat insulation module. The aerogel improved honeycomb polyurethane heat insulation module comprises a polyurethane foam core, a heat insulation rod and an insulation box body. The heat insulation rod is arranged in the polyurethane foam core and comprises an outer shell defined by a film with a structure protection function, and aerogel is filled in the outer shell. The polyurethane foam core is of a honeycomb structure and comprises the peripheral edge of the polyurethane foam core and a plurality of wall faces extending in the longitudinal direction. A plurality of adjacently arranged honeycomb holes are formed in the plurality of wall surfaces along a plane array extending transversely; the polyurethane foam core surrounds the side face of the heat insulation rod. The insulation box body surrounds the outer surface of the polyurethane foam core, and the polyurethane foam core top face insulation box body and the polyurethane foam core bottom face insulation box body completely cover the polyurethane foam core and the polyurethane foam core side face periphery insulation box body. According to the technical scheme, the heat leakage loss of liquefied natural gas in the storage and transportation process can be reduced according to the higher heat insulation requirement of a heat insulation module in an existing LNG containment system and the material physical property based on polyurethane and silicon dioxide aerogel.

A solar boat for easy collection of spilled oil and garbage of the present disclosure includes a cabin unit, a boat body consisting of a pair of ship bottoms having a structure that is symmetrical left and right and spaced apart below the cabin unit, a solar panel unit provided above the cabin unit and configured to convert solar energy into electrical energy, a collection and transfer unit provided between the pair of ship bottoms, driven by the electric energy supplied from the solar panel unit, and configured to collect spilled oil and garbage into the inside of the boat body, a garbage storage unit, and a spilled oil storage unit, wherein the collection and transfer unit comprises a rotating conveyor belt, and an oil adsorption member and a collection member that are attached to and detached from the conveyor belt, and the solar boat for easy collection of spilled oil and garbage of the present disclosure has an effect of having excellent work efficiency by simultaneously including an oil adsorption member and a collection member that are attached to and detached from a conveyor belt and simultaneously proceeding with collection of spilled oil and collection of garbage on the water, and an effect of being able to separate the spilled oil from the oil adsorption member, the collection member, and the garbage and easily move the spilled oil to the spilled oil storage unit by including a steam spray nozzle configured to spray hot steam at the end of the conveyor belt.

Membrane tank for containment of fluids at temperature that can differ significantly from ambient temperature, for example for containing a cryogenic fluid, wherein the membrane tank comprises, in direction from an inner containment volume: a primary membrane that is fluid tight, facing the contained fluid in operation and functioning as the primary fluid barrier, an insulation layer, surrounding the membrane on the outside, an outer structure, such as a ship hull or bulkhead or other structure, wherein the outer structure supports the insulation layer and primary membrane inside and carries the resulting forces thereby, and at least one opening for loading and unloading of fluid, and an optional secondary membrane if the outer structure is a steel structure becoming brittle at cryogenic temperature, such as a ship hull outer structure, the secondary membrane dividing the insulation layer into an inner insulation between the primary and secondary membranes and an outer insulation between the secondary membrane and the outer structure, wherein the primary membrane comprises areas of flat, curved or double curved shape and a corrugation in between said areas, wherein said areas are fastened to the underlaying insulation and the corrugations are taking up thermally induced strain. The membrane tank is distinguished in that it further comprises a coupling part for connecting a vacuum pump operatively to the whole insulation layer or the inner insulation layer, for enabling vacuum in the whole insulation layer or the inner insulation layer, during loading, containment and unloading of cryogenic fluid.

The invention belongs to the technical field of low-temperature liquid cargo storage, and particularly relates to an enclosure structure and an enclosure system at a dome corner area of a low-temperature liquefied gas storage tank, and the enclosure structure is arranged at the junction of a dome in the low-temperature liquefied gas storage tank, the top surface of a cabin and a front / rear bulkhead; comprising a corner insulation box connected to a corner, and a plane insulation box connected to a wall surface in the extension direction of the two ends; the corner area secondary-layer steel plate is attached to the inner side of the corner of the corner insulation box, and the corner area main-layer steel plate is welded to the inner side of the corner of the corner area secondary-layer steel plate through the connecting plate. The secondary shielding layer is attached to the surface of the insulation box and is welded with the corner area secondary layer steel plate; the main shielding layer is arranged on the inner side of the secondary shielding layer and is welded with the corner area main layer steel plate; and a supporting fixing plate is arranged between the two. Compared with the prior art, the problems that when an existing enclosure system structure is applied to the dome, stress is large, deformation is large, and structural stability is poor are solved. According to the scheme, the sealing performance and the use reliability of the low-temperature liquefied gas storage tank at the dome corner area are guaranteed.

The invention relates to the technical field of storage and transportation equipment, in particular to a thin film enclosure structure and a liquid cargo tank enclosure system. The heat insulation piece layer is arranged on the side, back on to the wave protrusions, of the sealing film layer. And the reinforcing piece is arranged between the sealing film layer and the heat insulation piece layer, is connected to the heat insulation piece layer and extends into the wavy bulges formed by the sealing film layer. The wave protrusion structures can conduct self-contraction deformation to release stress when bearing deformation stress so as to maintain the stability of the whole structure, the reinforcing pieces can prevent the wave protrusions from generating large deformation, displacement and twisting deformation of the wave protrusions are prevented, and the service life of the whole structure is prolonged. And the supporting effect can still be effectively achieved under the condition that asymmetric stress exists in the liquid cargo tank containment system, the influence of various stress sources on the sealing thin film layer is relieved, the overall structural stability of the thin film type containment system is improved, and it is guaranteed that the good sealing effect and safety can be maintained under various operation conditions and external influences.

The invention relates to a thermally insulated enclosure (1) comprising: a lid panel (3) and a bottom panel (2) spaced along a thickness direction (E) of the lid panel; side panels connecting the bottom panel and the lid panel along the edges of the bottom panel and the lid panel to form an interior space; a plurality of internal partitions dividing said interior space into a plurality of compartments (6); a first compartment of the plurality of compartments comprising an insulating lining filling said first compartment; the insulating lining comprising a fiber-reinforced polyurethane foam block (13) extending from the bottom panel to the lid panel and a first strip of a compressible insulating material (20) in the compressed state covering a lateral surface of the insulating block and capable of expanding to compensate for the contraction of the foam block. Figure for the abstract: 2

The invention belongs to the technical field of ship liquid cargo tanks, and discloses a liquid cargo tank heat insulation system and an installation method thereof. The liquid cargo tank heat insulation system comprises a filling mechanism, a fastening mechanism and a plurality of heat insulation blocks, the multiple heat insulation blocks are sequentially laid on a liquid cargo tank shell, each heat insulation block is in an I shape, a splicing gap between any two adjacent heat insulation blocks is in a shape like a Chinese character'zhong ', the splicing gaps are filled with the filling mechanism, and the fastening mechanism is arranged between the filling mechanism and the heat insulation blocks. A fastening mechanism penetrates through each heat insulation block, the bottoms of the fastening mechanisms are fixedly connected with the liquid cargo tank shell, the tops of the fastening mechanisms extend out of the heat insulation blocks, and the fastening mechanisms are configured to fasten the corresponding heat insulation blocks to the liquid cargo tank shell. According to the liquid cargo tank heat insulation system, the connecting stability of the heat insulation blocks on the liquid cargo tank shell is guaranteed, the heat insulation blocks are prevented from falling off from the liquid cargo tank shell, the filling stability of the filling mechanisms in the splicing gaps is also guaranteed, the filling mechanisms are prevented from falling off, the cost is low, and construction installation and repairing operation are convenient.

To solve a problem in which, in a situation where there are numerous dredging depressions for collecting sea sand along the coasts of Japan, and, because these depressions are causing deterioration of marine environment, countermeasures such as backfilling are carried out, and it is necessary to take measures to prevent pollution spread when carrying out construction work at sea, to increase prevention of generation and spread of pollutants in order to further promote a project, and to speed up backfilling work, etc., for reducing project costs.SOLUTION: Seabed backfilling in a countermeasure not using a tremie pipe is carried out using a method in which a soil transport barge loaded with sediment submerges, turns over at a specified seabed surface to unload the sediment, and then the empty soil transport barge automatically floats to a water surface. This speeds up the work. In addition, pollution spread prevention measures of the method includes covering a surface of the loaded sediment with a pollution prevention sheet until just before it is unloaded, and then immediately after reversing for unloading sediment, the soil transport barge and the pollution prevention sheet surround the seabed, to perform prevention of generation and spread of pollution caused by unloading sediment, in two stages.SELECTED DRAWING: Figure 10

The utility model relates to the technical field of ships, in particular to a ship with a liquid cargo tank detection channel. Wherein the detection channel is defined by a horizontal girder, a fence and the bulkhead of the liquid cargo tank, a first passing hole communicated with the detection channel is formed in a transverse strong frame of the liquid cargo tank, or an avoiding platform which is arranged on the outer side of the transverse strong frame in a striding mode and is provided with a communication channel is arranged on the longitudinal bulkhead of the liquid cargo tank, and the communication channel is communicated with the detection channels on the two sides of the transverse strong frame. The inherent horizontal girder of the ship liquid cargo tank and the liquid cargo tank wall are used as the main body of the detection channel, so that the manufacturing material is saved, and the cost is reduced; a first passing hole communicated with the detection channel is formed in a transverse strong frame of the liquid cargo tank, or an avoiding platform arranged on the outer side of the transverse strong frame in a crossing mode is arranged on the longitudinal bulkhead of the liquid cargo tank and used for being connected with the detection channel, so that the detection channel does not need to integrally cross the strong frame from the outside, parts are reduced, and cost is reduced.

The invention relates to a liquefied gas storage device, comprising: a support structure (1); a sealed and thermally isolated tank; and a dome structure (25) comprising: an inner barrel (29) passing through an aperture (27) formed in the support structure (1); -an outer barrel (26) arranged around the barrel (29), the outer barrel (26) being fixed to the support structure (1) around an annular portion (34) of the support structure (1); and-a secondary discharge duct (61) formed in the secondary space (52); wherein the annular portion (34) of the support structure (1) comprises a plurality of through-openings (38) distributed around the annular channel portion and allowing gas to flow from the secondary thermal insulation barrier (12) to the secondary space (52).

A vessel hybrid combined cycle power and propulsion system includes a steam turbine, a gas turbine, an auxiliary generator, an electric propulsion drive system, and an energy storage system, each connected to an AC bus. The system further includes a source of steam for the steam turbine, a control system for controlling operation of the steam turbine, gas turbine, auxiliary generators, electric drive propulsion system and energy storage system. The primary source of steam for the steam turbine is exhaust gas from the gas turbine. The primary source of gas for the gas turbine is boil off gas from the cargo hold. The AC bus includes a plurality of sections of AC bus coupled together by bus ties closed in normal operation forming a closed ring AC bus. The electric propulsion drive system includes a variable speed drive, driving an electric motor coupled through a drive shaft to a propeller.

The invention relates to the field of ship transportation, and discloses a device for liquefying boil-off gas of an LNG cabin and a liquid ammonia cabin through ship liquid hydrogen cold energy. The device comprises a cold box heat exchanger, wherein a liquid hydrogen cabin and an LNG tank / liquid ammonia cabin are both communicated with the cold box heat exchanger; a liquid hydrogen boil-off gas circulation passage is arranged between the cold box heat exchanger and the liquid hydrogen cabin, and liquid hydrogen boil-off gas flows into the cold box heat exchanger from the liquid hydrogen cabin through the passage; an LNG / liquid ammonia boil-off gas circulation passage is arranged between the cold box heat exchanger and the LNG tank / liquid ammonia cabin, and LNG / liquid ammonia boil-off gas flows into the cold box heat exchanger from the LNG tank / liquid ammonia cabin through the passage; an LNG / liquid ammonia circulation channel is further arranged between the cold box heat exchanger and the LNG tank / liquid ammonia cabin, and LNG / liquid ammonia flows into the cold box heat exchanger from the LNG tank / liquid ammonia cabin through the channel. According to the device, effective utilization of the cold energy of the hydrogen evaporation gas is achieved, and the energy consumption in the LNG or liquid ammonia evaporation gas cooling and liquefying process is further reduced.

According to the method for expanding the capacity of the A-type cabin in the liquefied gas ship, the A-type cabin is fixed in the ship body, top side cabins are arranged on the two broadsides of the top of the A-type cabin, a deck above the A-type cabin is a three-section type deck, the three-section type deck sequentially comprises a straight section, a large inclined section and a small inclined section from the central axis of the A-type cabin to the broadsides, and the small inclined section serves as a top cabin plate of the top side cabins at the same time. Included angles are formed between the large inclined section and the base line of the ship body and between the small inclined section and the base line, the included angle formed between the small inclined section and the base line is smaller than 5 degrees, and the included angle R2 formed between the large inclined section and the small inclined section is 130 degrees lt; r21t; the included angle R3 formed by the top side cabin inclined plate and the broadside is 45 degrees lt; r < 3lt >; 75 degrees, R < 3 > gt; and R < 2 > is 90 degrees. A deck beam is arranged on the lower surface of the three-section type deck, and the two ends of the deck beam extend to the top side cabin. The multi-section type deck is adopted, cargo loading with larger cabin capacity can be achieved in a channel with limited ship length, ship width and depth, higher economic benefits are achieved, and maximum loading of an existing liquefied gas ship is achieved.

The invention relates to a honeycomb sandwich type vacuum insulation panel and a vacuum insulation panel system, and provides the honeycomb sandwich type vacuum insulation panel and the vacuum insulation panel system. An insulating panel mounted between a main gas barrier and an auxiliary gas barrier of a low-temperature liquid fuel tank is formed as a honeycomb sandwich panel having a honeycomb structure, so that insulation of the low-temperature liquid fuel tank can be improved and maximized, and heat loss thereof can be minimized. The cryogenic liquid fuel tank includes a primary gas barrier, an insulating panel, and a secondary gas barrier such that cryogenic liquid fuel containing liquefied hydrogen is contained therein, the cryogenic liquid fuel tank including: a honeycomb sandwich panel mounted between the primary gas barrier and the secondary gas barrier to insulate the cryogenic liquid fuel tank; a vacuum film accommodating and evacuating the honeycomb sandwich panel; and a breakage-proof pad installed at each corner of the honeycomb sandwich panel in contact with the vacuum film and preventing damage to the vacuum film.

The invention relates to an LNG ship liquid cargo containment system corrugated unit and a corrugated plate, the LNG ship liquid cargo containment system corrugated unit comprises a bottom plane part and a corrugated protruding part which are arranged in a stacked mode, the corrugated protruding part has a certain height relative to the bottom plane part, and the height is smaller than the length of the bottom plane part; the projection of the corrugated protruding part on the bottom plane part coincides with the bottom plane part. The bottom plane part is provided with a plurality of edges, and the edges of the bottom plane part are connected with the corrugated protruding parts respectively. According to the corrugated plate, transverse and vertical low-temperature contraction deformation is absorbed at the same time through the corrugated convex structures, and internal stress generated by low-temperature contraction of the corrugated plate in a large-temperature-difference-change working scene can be reduced. The corrugated unit form is simple in structure and easy to machine, forming is easy to control in the machining and stamping process, the thinning rate is uniform and dispersed, and the yield is high.

A waste heat recovery system for exhaust gas for a ship is disclosed. The waste heat recovery system for exhaust gas for a ship of the present invention includes a heat medium circulation line provided on a ship and through which a working fluid circulates, a carburetor provided in the heat medium circulation line and vaporizing the working fluid by heat exchange with exhaust gas discharged from an engine of the ship, and an expansion turbine provided in the heat medium circulation line and expanding the working fluid to generate shaft power, wherein a liquefied gas with a low flash point is supplied to the engine as fuel, and the working fluid circulates through the heat medium circulation line and undergoes a phase change from liquid to gas using the exhaust gas as a heat source.

The invention discloses a water quality monitoring device for environmental protection monitoring, and relates to the field of sampling boats, the water quality monitoring device comprises a hull and three sample storage tanks, the hull is internally provided with a power box, one side of the hull away from the power box is provided with a water pump, one side of the power box is provided with a bottom plate, the upper surface of the bottom plate is uniformly provided with three moving grooves, and the bottom plate is provided with a processing mechanism; the processing mechanism is used for conducting sealing and low-temperature storage on the sample storage tanks, the processing mechanism is composed of an injection assembly, three sealing assemblies and a low-temperature storage assembly, each sealing assembly is arranged on the bottom plate and matched with the fixed arc plate, and each sample storage tank is placed in the corresponding sealing assembly; the injection assembly is used for injecting a sucked sample into the sample storage tank and sealing the sample storage tank through the sealing assembly, and the low-temperature storage assembly is used for cooling the sealed sample storage tank. According to the invention, the full sample storage tank can be sealed and stored, so that the sample is prevented from being influenced by external environments such as dust and gas exchange, and the purity and data accuracy of the sample are ensured.

Methods and systems are provided for transient fluidic coupling via reversibly couplable conduits. In one example, a method includes directing a conduit assembly to a receiving port by releasing one or more fluid streams from the conduit assembly. The method may further include fluidly coupling an internal passage of the conduit assembly to the receiving port. The internal passage may extend from the conduit assembly and along a conduit between a pair of free-floating bodies, such as between a wave engine and a tanker ship, so as to exchange one or more fluids, such as an electrolysis reactant and an electrolysis product. The fluidic coupling may be reversible, in that the conduit assembly may be detached from the receiving port to sever the fluidic coupling. In certain examples, the detaching may be actuated by releasing one or more additional fluid streams from the conduit assembly.

The present invention relates to the field of shipbuilding technology, and in particular to a membrane-type containment system for LNG carriers. The containment system comprises: a main shielding layer, the inner side of which contacts LNG; a main thermal insulation layer, which is arranged on the outer side of the main shielding layer; a secondary thermal insulation layer, which is arranged on the outer side of the main thermal insulation layer; a secondary thermal insulation layer, which is arranged on the outer side of the secondary thermal insulation layer; a load-bearing putty, which is arranged between the outer side of the secondary thermal insulation layer and the load-bearing inner wall of the cabin of the carrier; wherein an inwardly extending anchoring structure is arranged on the load-bearing inner wall of the cabin, and the anchoring structure passes through the secondary thermal insulation layer and the secondary thermal insulation layer, fixes the secondary thermal insulation layer and the secondary thermal insulation layer to the load-bearing inner wall of the cabin, and is used to provide deformation freedom for the main thermal insulation layer and the secondary thermal insulation layer. In the present invention, the secondary thermal insulation layer is connected by the anchoring structure, which can provide deformation freedom for the containment system and avoid mutual tearing between different structural layers of the containment system.

Provided in the present application are a heat-insulating system of a B-type independent liquid tank, and a ship. The heat-insulating system comprises: prefabricated heat-insulating plates arranged on the outer surface of a liquid tank, wherein the side surface of each prefabricated heat-insulating plate is of a step shape; fixing assemblies arranged at joints of the prefabricated heat-insulating plates, wherein each fixing assembly comprises a fixing column and a U-shaped fixing member, two flanges are provided at the top of each U-shaped fixing member, the flanges are arranged on the stepped side surfaces of the prefabricated heat-insulating plates, and each joint between inner heat-insulating layers is filled with an elastic heat-insulating joint-filling material; heat-insulating plug blocks, U-shaped areas of the U-shaped fixing members being filled therewith; joint heat-insulating plates, each of which is arranged in a joint between adjacent outer heat-insulating layers, each joint heat-insulating plate being connected to the prefabricated heat-insulating plates, an extending overlap layer, the U-shaped fixing member and the heat-insulating plug block; and joint protection layers, each of which is laid on the upper surface of a joint between two adjacent prefabricated heat-insulating plates. The present application simplifies the product structure, shortens the design period, simplifies the mounting process, and reduces costs.

The invention relates to the technical field of shipbuilding, and discloses a marine methanol fuel storage tank with a liquid sloshing inhibiting function, which comprises a support frame, a fuel storage tank body is arranged at the top of the support frame, an observation window is arranged at the top of the fuel storage tank body, and a discharge port is formed in one side of the fuel storage tank body. A climbing ladder is arranged on one side of the fuel storage tank body, an arch-shaped plate is arranged at the bottom of the inner wall of the fuel storage tank body and is of an arch-shaped structure, multiple sets of circulation holes are formed in the surface of the arch-shaped plate, and a buffering assembly is arranged at the top of the arch-shaped plate. A hedging assembly is arranged on the inner wall of the fuel storage tank body. The buffer assembly is used for reducing the oscillation degree of liquid in the fuel storage tank body; the hedging assembly is used for counteracting the shaking amplitude of liquid in the fuel storage tank body. Compared with the prior art, the shaking strength of part of methanol liquid can be actively counteracted, and the collision strength of the methanol liquid to the inner wall of the fuel storage tank body is effectively reduced.

A subsea unit suitable for storing hydrogen gas underwater comprises a weighting base and an array of interconnecting storage tanks on the base. The base may be cast from concrete on a deck of a vessel from which the unit is subsequently launched into water. A protective structure fixed to the base covers the array of tanks. A restraint system, comprising a series of strap restraints curving around the top of each tank, secures the tanks to the base against buoyant upthrust. The restraints are attached to elongate tensile members extending upwardly from the base, disposed on opposite sides of the underlying tank. The arrangement transfers loads efficiently from each tank to the base on load paths that bypass the other tanks.

Provided is a mounting method for a trihedral-corner-area arrangement structure of a thin-film-type enclosure system. The thin-film-type enclosure system comprises a main-layer thin film layer (34), a fastening attachment plate (35), a main-layer insulating layer (33), a secondary-layer thin film layer (32) and a secondary-layer insulating layer (31), which are sequentially connected and fixed to a ship body structure by means of penetrating fasteners (28), wherein the main-layer thin film layer (34), the main-layer insulating layer (33), the secondary-layer thin film layer (32) and the secondary-layer insulating layer (31) enclose a low-temperature liquid cargo storage tank for accommodating an ultra-low temperature medium, and the main-layer thin film layer (34) is in contact with the ultra-low temperature medium; and a corner area where three side faces intersect with each other comprises a trihedral-corner-area main-layer insulating layer module (101), a trihedral-corner-area secondary-layer insulating layer module (102) and a trihedral-corner-area secondary-layer planar transition insulating module (90). The mounting method comprises: according to set scribe lines, mounting spacer plates (36) and positioning studs (37) on a cabin wall surface of the ship body structure; and then mounting the penetrating fasteners (28), the trihedral-corner-area secondary-layer insulating layer module (102), the trihedral-corner-area secondary-layer planar transition insulating module (90) and other modules, respectively.

A new type of B-type independent tank, the B-type tank is arranged in the hull structure, and a support layer is arranged between the main barrier wall of the B-type tank and the hull structure, and the support layer includes a top support mechanism, a lateral support mechanism and a vertical support mechanism. A secondary barrier wall is also arranged between the bottom of the B-type tank, the main barrier wall and the hull structure. The shape of the secondary barrier wall is the same as the external contour structure of the bottom of the B-type tank. There is a gap between the secondary barrier wall and the main barrier wall and the hull structure, and it is supported and fixed by the vertical support mechanism. The secondary barrier wall divides the main barrier wall and the hull structure into two areas, and the main barrier wall, the secondary barrier wall and the bottom plate of the ship are inspected and repaired through the divided areas. The inner surface of the secondary barrier wall is covered with a first anti-bend layer. The present invention eliminates the risk factors of leakage of the B-type tank. Even if the B-type tank leaks due to unavoidable reasons, the technical solution of the present invention can also achieve the effect of timely solving the leakage of liquefied gas and avoiding more damage and loss to the hull structure.