KR20140111666A - Pressure vessels and apparatus for supporting them onboard of ships - Google Patents

Pressure vessels and apparatus for supporting them onboard of ships Download PDF

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Publication number
KR20140111666A
KR20140111666A KR1020147018586A KR20147018586A KR20140111666A KR 20140111666 A KR20140111666 A KR 20140111666A KR 1020147018586 A KR1020147018586 A KR 1020147018586A KR 20147018586 A KR20147018586 A KR 20147018586A KR 20140111666 A KR20140111666 A KR 20140111666A
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KR
South Korea
Prior art keywords
pressure vessel
cng
vessel
thermal insulation
support
Prior art date
Application number
KR1020147018586A
Other languages
Korean (ko)
Inventor
프란체스코 네티스
줄리오 카리니
장프랑코 니소
파올로 레돈디
바니 네리 토마셀리
Original Assignee
블루 웨이브 컴퍼니 에스.에이.
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Application filed by 블루 웨이브 컴퍼니 에스.에이. filed Critical 블루 웨이브 컴퍼니 에스.에이.
Publication of KR20140111666A publication Critical patent/KR20140111666A/en

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    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/002—Storage in barges or on ships
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 m3)
    • 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
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
    • 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
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0329—Foam
    • F17C2203/0333—Polyurethane
    • 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
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0604—Liners
    • 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
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0621—Single wall with three layers
    • 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
    • F17C2203/0639—Steels
    • 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
    • F17C2203/0639—Steels
    • F17C2203/0643—Stainless steels
    • 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
    • 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
    • F17C2203/0658—Synthetics
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • 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
    • F17C2205/0103—Exterior arrangements
    • F17C2205/0115—Dismountable protective hulls
    • 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
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0379—Manholes or access openings for human beings
    • 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
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • F17C2205/0397—Arrangement of valves, regulators, filters in direct contact with the pressure vessel on both sides of the pressure vessel
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2154—Winding
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/228—Assembling processes by screws, bolts or rivets
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/011—Oxygen
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/037—Containing pollutant, e.g. H2S, Cl
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • 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
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/011—Improving strength
    • 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
    • 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
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • 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
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F17C2270/0173—Railways
    • 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
    • F17C2270/0186—Applications for fluid transport or storage in the air or in space
    • F17C2270/0189—Planes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The pressure vessel 10 for the marine transportation of CNG comprises an outer layer 202 of cushioning and heat insulating material for thermally insulating at least a portion of the vessel body and CNG for receiving and containing CNG. The heat insulating material 202 is separate from the container body. For example, the heat-insulating material is a foam. A rigid or semi-rigid envelope or skirt 204 of structural material is provided in contact with at least a portion of the thermal insulation material on the outer surface of the cushioning and thermal insulation material 202 such that the pressure vessel 10 is in contact with the vessel 301 ) Or the like.

Description

[0001] PRESSURE VESSELS AND APPARATUS FOR SUPPORTING THEM ON BOARD OF SHIPS [0002]

The present invention relates to a vessel-based support device for pressure vessels and vessels, vessels or other types of transport means, especially pressure vessels, such as devices comprising a guillotine element for expelling pressure vessels in a desired location or location on a waterborne vessel . In particular, the present invention relates to a pressure vessel for marine transportation of compressed natural gas (CNG) and a support apparatus for the pressure vessel.

Natural gas is a valuable natural resource found in natural seabed storage. The natural gas can be extracted from such a reservoir and transported to land by ship, boat, etc. The present invention relates to such transportation, wherein the natural gas takes the form of CNG.

Use on land, for example extraction and transport of parts from natural underground storage, is also conceivable.

CNG is a form of natural gas that allows a commercially viable amount of natural gas to be contained and stored within a limited space available in ships or boats and land transport trucks. Various other types of pressure vessels (i.e., pressure vessels made of different materials and having different sizes, shapes and / or accessories) can be used to transport the CNGs. At the awards, larger and more pressure vessels can be deployed together because the vessel can be considerably larger than the road transport vehicle and the train. Nevertheless, the invention is applicable to all these types of vehicles.

CNG pressure vessels are generally designed to operate up to a certain maximum internal safety working pressure. If these internal maximum pressures are exceeded, safety may be compromised. Also, even within such a maximum internal safety working pressure, the pressure fluctuations inside the vessel are undesirable because the pressure fluctuations can cause cyclic stresses in the vessel walls and fatigue damage or breakage can occur due to such stresses to be.

When transported in transport vehicles and in particular boats or ships, CNG pressure vessels are used to hold, hold or hold pressure vessels in place on the transport compartment, such as the ship's deck, in the ship's storage compartments or in the ship's hull And receives external force from the supporting means. This bearing capacity contributes to the total amount of stress generated in the wall of the vessel given the internal CNG pressure induced stresses. This is especially true in the case of large, high and relatively heavy pressure vessels, since such pressure vessels need to be held very tightly.

The external support forces acting on the marine CNG pressure vessel and the resulting overall stresses on the wall of the pressure vessel can be further exacerbated by shaking (pitching, rolling and yawing) of the water vessel, In extreme situations such as conditions, these additional forces can be very large. For example, severe rolling of a boat or ship can greatly increase the point load that is transmitted to the CNG pressure vessel, e.g., transported from a boat or ship, e.g., by support brackets or cages, caused by the support.

The maximum external force applied to the CNG pressure vessel by the support portion depends on the configuration of the support portion, the configuration of the pressure vessel, and the angle at which the vessel can pitch, roll, and yaw. Therefore, if not designed correctly, under extreme weather or sea conditions, the pressure vessel may be subjected to external loads or bending moments, resulting in bending failure or buckling due to stress concentration occurring in one or more of the pressure vessels on the vessel This can happen. This may also be the case for trains, planes and road transport vehicles.

It is an object of the present invention to alleviate the above risks.

According to one aspect of the present invention there is provided an apparatus comprising a pressure vessel for CNG transport comprising a vessel body for receiving and containing CNG, Further comprising a layer of cushioning and thermal insulation material to thermally insulate at least a portion of the container, the cushioning and thermal insulation material being separate from the container body, It can function as a buffering element for supporting and protecting the container.

Preferably, the vessel is intended for marine transport of CNG, so that the cushioning and heat insulating material may serve as a buffering element for supporting and protecting the pressure vessel on the horn and the vessel.

Thermal insulation devices and materials are particularly suitable for CNG pressure vessels where there is cargo to be cooled during transport of natural gas (cooling may reduce the transport pressure for a given amount of natural gas, Pressure is maintained).

The cushioning and heat-insulating material may comprise one or more materials selected from elastomers such as foams, polymers and rubbers. A metal foil layer may also be used, which may be added to or part of a buffering and thermal insulating material, or it may have elasticity, thus forming a buffering and thermal insulating material.

Preferably, the buffer and thermal insulation materials are generally homogeneous / homogeneous or isotropic. Preferably, the material has a high free / void volume. Such materials are generally particularly effective in buffering and insulating the container or a portion thereof.

Preferably, a rigid or semi-rigid shell or skirt made of a structural material is provided, for example, to contact at least a portion of the material at the outer surface of the cushioning and heat-insulating material to cooperate with the holding device on the vessel to attach or hold the vessel Function as a structure interface

Shrouds or skirts can also serve to protect cushioning and thermal insulation materials.

The sheath or skirt can properly distribute and distribute the load through the insulating structure.

The CNG pressure vessel usually has a round cross section in the longitudinal direction. Often the pressure vessel is in the form of a cylinder or tube with an end cap. The end cap can often be dome-shaped.

The thermal insulation material may be provided to completely surround the container body at least on one side of the container body (i.e., a cross-section of the container body, for example). The heat insulating material may extend along the circumference or length of the pressure vessel or along the entire circumference of the pressure vessel to cover at least some space or volume of the pressure vessel. The heat insulating material may be provided in the form of a ring or tube of material extending around the entirety of the main cylinder of the pressure vessel, which may be covered in whole or in part by the ring or tube. Therefore, most of the pressure vessel can be insulated.

Using insulating material, CNG stored inside the pressure vessel can be well insulated in that the CNG will be insulated against temperature changes due to large tilts, e.g., direct sunlight or cold wind.

Preferably, the envelope or skirt made of the structural material will extend over or completely cover the thermal insulation material, so that the pressure vessel will be covered by the envelope and thermal insulation at any selected location (s) Can be supported in cooperation with materials. Further, when covering the whole, the insulating material is better protected by the sheath.

The pressure vessel may be provided with a support means for connecting the pressure vessel to the hull, chassis or framework of a means of transport such as a vessel or a boat and may thus be provided at the transport means, Lt; / RTI >

The support means may be attached to a shell or skirt made of a structural material, which provides a number of potential attachment locations. Direct contact between the thermal insulation material and the support means can theoretically damage the thermal insulation material.

To better support the pressure vessel, the support means may comprise a ring-shaped holder or bracket. In particular, when the pressure vessel is supported in the vertical direction, a cage comprising two ring-shaped holders or brackets spaced apart from each other around the heat-insulating material, or a plurality of rings spaced apart from each other is also possible and advantageous. These rings may be placed on the skirt (s) or skirt (s) or may themselves be the skirt (s) or skirt (s).

According to another aspect of the present invention there is provided an apparatus for supporting a CNG pressure vessel on a transport means,

Means for securing the device to the vehicle; And

Means for supporting at least one CNG pressure vessel on a transport means at a desired location,

The apparatus comprising a layer of a thermal insulation material for thermally insulating at least a portion of the at least one pressure vessel, the layer comprising at least one pressure when the at least one pressure vessel is supported by the support means of the apparatus So as to form a buffer element of the device between the container and said support means.

The device may be permanently fixed to the transport means.

The transportation means may be a ship or a boat.

The device may be configured to support the pressure vessel in a substantially vertical direction. The vertically supported pressure vessel is more protected against support damage due to the usual rolling, pitching or yawing of the transportation means.

Suitably, the layer of heat-insulating material may be one or more of an elastomer such as foam, plastic or rubber. These materials are often good thermal rejections and often provide good structural buffering or damping properties.

A rigid or semi-rigid shell or skirt made of a structural material may be interposed between the pressure vessel support means and at least a portion of the heat-insulating material. Thus, an interface between the supporting means and the heat insulating material can be provided. The envelope protects the thermal insulation material from cracks and ruptures at a location where force is transmitted from the support means.

Preferably, the heat-insulating material completely extends at least around the container at one end face of the container.

The thermal insulation material may be generally tubular. Because the thermal insulation material is generally tubular, the pressure vessel is conveniently supported by the insulation material, particularly when the pressure vessel has an external size and shape that conforms to the internal size and shape of the tubular (e.g., generally cylindrical) .

The shell or skirt made of a structural material can be provided to extend over the thermal insulation material and completely cover the thermal insulation material thereby providing some structural protection for the thermal insulation material.

The pressure vessel support means may comprise one or more ring-shaped support members. Such a ring member can be used in various applications, especially in a cylindrical pressure vessel.

The pressure vessel holding means may include a first support member and another support member, and one or both of these support members are ring-shaped.

When one or more support members are provided, the support members are generally spaced apart from each other, and thus the pressure vessel is supported by the cooperation of two or more support members spaced apart from each other. This gives the pressure vessel additional stability.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will now be described in more detail with reference to the following figures, purely by way of example.

1 is a schematic cross-sectional view of an embodiment of a CNG pressure vessel according to the present invention adapted to be supported vertically in a CNG pressure vessel transport vessel.
Fig. 2 is a partial, schematic side view of a CNG pressure vessel according to a second embodiment of the present invention supported vertically in a CNG pressure vessel transport vessel; Fig. 2 also includes an enlarged detail cross-sectional view of a CNG pressure vessel.
3 is a schematic cross-sectional view of a CNG pressure vessel supported vertically in a CNG pressure vessel transport vessel, with and without a shock absorbing sleeve made of a thermal insulating material, and also includes an enlarged detail cross-sectional view of a CNG pressure vessel do.

Figure 1 shows a "Type 3" multi-layer CNG (polyurethane foam) having an outer jacket, a sleeve or a layer 202 (shown schematically as cross dot area in Figure 1) of a thermal insulating material (a polyurethane foam in this embodiment) The pressure vessel 10 is shown. A "Type 3" vessel refers to a vessel having an outer structural layer made of a fiber-reinforced composite material and an inner metal liner. The outer composite provides the structural strength of the vessel and the inner liner provides an impermeable layer for containment of the CNG.

Typical thermal properties of polyurethane foams have a thermal conductivity of 0.02-0.04 W / mK at ambient temperature.

The thermal insulation sleeve covers the central cylindrical portion of the pressure vessel, which is between the two end caps (the first end cap 12 and the second end cap 11). In this embodiment, both end caps 11 and 12 are provided with holes for charging or discharging CNG, for example, or for internal cleaning and inspection.

The pressure vessel 10 of Figure 1 is vertically supported on the hull or deck 301 of the vessel because the first end cap 12 is located at the lower end 102 of the pressure vessel and the second end cap 11, Quot; means that it is located at the upper end 101 of the pressure vessel.

The upper hole 6 is designed to be used as an inspection port or manhole so that the inspector can access the inner space of the pressure vessel 10. In this embodiment, the hole 6 is a manhole of 18 inches (45 cm) wide which allows access into the pressure vessel from above. Other embodiments may have 24 inch (60 cm) manholes. The manhole 6 is preferably provided according to the American Society of Mechanical Engineers (ASME) standard. The manhole 6 has a sealable or sealable lid or other closure means so that the opening can be sealably closed and also when the container 10 is not in use, You can go inside the container and inspect it.

In the present embodiment, the heat insulating material 202 is not extended to cover the manhole 6. [ However, if necessary, the thermal insulation layer can be extended to cover the manhole, for example by providing an openable or removable layer of thermal insulation material over the manhole 6 so that access to the container is still possible. This configuration may also include the concept of an insulated manhole cover.

Where the thermal insulation material 202 provides a "buffer" in addition to providing insulation properties for heat transfer (heat loss or heat acquisition). Suitable materials include a mechanical clamping material, such as a pressure vessel and a structural element (schematically indicated by the reference numeral "300" in FIG. 1, such as those used to hold the vessel in place on the deck or hull 301) It may be a material suitable for absorbing impact or vibration which may be transmitted.

In Figure 1, the vessel is shown schematically as a fixed point only for the pressure vessel 10.

It will be appreciated that popular materials having suitable cushioning properties include elastomers such as foams, polymers and rubbers, and composites comprising a combination of materials of these base classes or a plurality of such materials.

In general, the buffer layer 202 is not robust enough to support the pressure vessel in position on the boat during transport, because the pressure vessel can be largely shaken due to the rough sea. The structural support element 300 is provided to hold the pressure vessel against the hull or deck and may include a beam, a rod, a bar, a cage, a grid and combinations thereof or other suitable heavy Duty construction, but generally the buffering and insulating material is not sufficiently structural to be a suitable structure in which the support elements are fixed. Therefore, as described later, a structural sheath is provided on the insulating material.

As can be seen in Fig. 1, the tubes of the buffering and heat insulating material in that embodiment are provided only around the central cylindrical portion of the vessel 10. In an alternative embodiment, such material may be provided as a "jacket" that partially encloses the end cap to surround the entire pressure vessel, or to leave room for unloading and loading, for example, of CNG. have. In other embodiments (some of which will be described later), two or more of the sleeves of the thermal insulation sleeve may abut against each other or be spaced apart along the length of the pressure vessel and provided along the length thereof around the pressure vessel. Although leaving a gap does not reduce the heat release provided for the pressure vessel, it is not necessary to cover the entire surface of the cylindrical or major portion of the pressure vessel with a cushioning and thermal insulation material. Nevertheless, it is not always necessary to provide the maximum possible degree of insulation for the pressure vessel.

The lower hole 7 is an inlet and an outlet port for filling and emptying the container. The lower hole can be a 12 inch (30 cm) opening, which is a size well suited for CNG delivery piping. In order to isolate the CNG from the outside environment, the hole will also be provided with a closure and sealing means such as a flange or the like.

The thermal insulation material 202 may optionally cover the opening 7 and the respective pressure vessel end cap 12, provided it does not interfere with the loading and unloading operations. This can be achieved, for example, with an openable or removable jacket corresponding to the opening 7.

In Fig. 1, an impermeable metal liner 1 is provided inside the pressure vessel, which forms the inner wall of the pressure vessel. However, alternative CNG impermeable liner materials such as HDPE or other resins (these materials are used as liner to form a "Type 4" pressure vessel) may be used.

According to the illustrated embodiment, the first fibrous layer 2 around the liner 1 is a carbon / graphite based fiber reinforced polymer. However, alternative reinforcements for composites, such as glass, aramid or metal fibers, may also be used.

Which is substantially entirely wrapped around the container (including most of the container end) and is intended to provide structural contribution during service.

This layer provides some degree of thermal insulation to the stored CNG, but the thermal insulation provided by the outer layer 202 is additionally provided in its insulation, which can greatly improve the insulation properties of the construction.

According to the illustrated embodiment, the second fiber layer 3 also has insulation and protection functions. In use, the fiber layer may be in direct contact with the external environment, for example in the region of the end caps 11, 12 in Fig. 1 (the cylindrical portion of the pressure vessel is instead shielded by additional layers 202, 204). The second outer fiber layer 3 can be a polymer or a fiber-reinforced polymer based, for example, on glass fibers, because it has an inactive behavior in harsh marine environments and low thermal conductivity insulating properties. E-glass or S-glass fiber is the preferred fiber used for the fiber component of the second layer.

The pressure vessel 10 of FIG. 1 may be manufactured independently of the external components 202 and 204, the configuration of which may be added or installed in a pressure vessel at a later stage.

Other types of pressure vessels may be retrofitted to the thermal insulation sleeve 202 in accordance with the present invention.

In the embodiment of FIG. 1, the exterior of the thermal insulation jacket 202 is also provided with a shell or skirt 204 (e. G., A thin steel tube) of structural elements. In this case, the skirt 204 is cylindrical and its inner diameter is generally equal to the outer diameter of the thermal insulation jacket. The inner diameter of the skirt 204 may be slightly less than the outer diameter of the sleeve before the skirt is applied to the thermal insulation sleeve 202 so that the outer skirt 204 is applied to the heat insulation material 202, The insulation material is slightly compressed inside the outer skirt. In this way, interference fit occurs.

This forced fit makes it difficult to separate or disassemble the skirt 204 from the thermal insulation sleeve, which is desirable.

The purpose of the envelope or skirt 204 is to provide a mechanical interface for attachment to the external support support means 300 and also to protect the inner layer. For this purpose, the envelope or skirt 204 may be made of a rigid or semi-rigid material such as a metal plate or a metal film. The stiffness of its shell or skirt can be determined by its thickness or its structural form, or both. For example, the stiffness of the shell or skirt can be increased by the ribs.

Attachment between the mantle 204 and the support means 300 may be performed in other ways as is generally known in the art, such as welding, bolting, riveting, and the like.

The details of the attachment method between the shell 204 and the support means 300 (connected to the vessel 301) are not important to the present invention and will not be described in detail here.

Importantly, the envelope or skirt 204 also serves to protect the heat-insulating material from rupture, cracking or cutting that may occur when the heat-insulating material is in direct contact with the support means 300.

The envelope or skirt 204 and the insulating layer 202 together form a protective shell for the pressure vessel. This protection structure is connected to the ship through the support means 300. Therefore, the pressure vessel itself is not directly connected to the support means 300 by a conventional structural element. Instead, the pressure vessel is connected to the vessel 301 via its outer shell, which includes a skirt 204 and a cushioning thermal insulation layer 202 that directly supports the pressure vessel. Therefore, the pressure vessel is protected from direct binding force and thus has less point loading thereon during delivery.

Due to the cushioning and heat insulating material 202, the CNG stored in the container is shielded at least to some extent against temperature fluctuations of the external environment, and at the same time, the container has its supporting force, As shown in FIG. This means that the walls of the pressure vessel will be protected at least to some extent from the stresses due to the fluctuating pressure that may be due to the temperature induced internal pressure deviation at the CNG and the bearing forces exerted by the outer support 301 on the vessel 10 do.

The presence of the buffer layer 202 means that the supporting force is smoothly dispersed over a wider area (see FIG. 3). Therefore, with the present invention, the CNG pressure vessel can be advantageously held in place on its transport vessel. As is known, bad weather or rough seas can increase the magnitude of the bearing force applied to the CNG pressure vessel during at least some time interval. Therefore, the buffer layer 202 can protect the CNG pressure vessel when these peaks occur.

In addition, since the buffer layer also has thermal insulation, the protective function of the intermediate structure 202, 204 interposed between the pressure vessel and its supporting means 300 is extended to the action of the internal pressure force due to CNG.

In some embodiments, the intermediate structure 202, 204 may be provided onboard the vessel as part of a support means for holding the pressure vessel. Therefore, in these embodiments, such an intermediate structure or a portion thereof is provided independently of the provision of the pressure vessel itself, and the means of transport with the pressure vessel support structure can be assembled separately from the pressure vessel. In a later step, the pressure vessel may be inserted into the intermediate protective structure already provided in the transport means, or may be removed and replaced as required. Prior to the need to extend the service life of the pressure vessel through different tests and certifications, or before the use of a vessel or other vehicle, or the need to cease the use of each aged pressure vessel, the pressure vessel has a limited cycle life, It may have 1,000 to 4,000 cycles of loading and unloading.

In particular, where the insulating material does not have electrical conductivity, the pressure vessel may need to be grounded to the ship's hull or to the skirt of the vehicle or the skirt of the intermediate structure. Likewise, the skirt may need to be grounded as such. This will not generate static electricity due to friction between the container and the insulating material and therefore will not spark, which is important for CNG transport due to the flammability of the product.

Figure 2 shows a pressure vessel 10 comprising an inner metal liner 100 and an outer composite layer 200, which is a first layer 100 that allows hydraulic or fluid containment of CNG. Therefore, this pressure vessel can also be included in the "Type 3" family. The pressure vessel is also supported in the vertical direction on the vessel 501 (schematically represented by a fixed point in FIG. 2) by means of a support means 500, and the support means is of any conventional type, such as a metal bracket, , But the details thereof are not described in detail here.

In this embodiment, the metal liner as first layer 100 need not be provided in such form to provide structural functionality during CNG transport, especially during maritime transportation or during loading or unloading. However, it is preferable that the metal liner has at least corrosion resistance. It is also desirable that the metal liner is capable of retaining such gas, for example by being impermeable to untreated or unfired gas. Thus, the preferred material is stainless steel or some other metal alloy.

Stainless steels are preferably austenitic stainless steels such as AISI 304, 314, 316 or 316L (low carbon content). When some other metal alloy is used, it is preferable that the alloy is a nickel-based alloy such as an alloy having corrosion resistance or an aluminum-based alloy.

The metal liner forming the first layer 100 is preferably strong enough to withstand the stresses applied during the fiber winding process so that it is strong enough to withstand the stresses generated during its manufacture so as not to collapse on its own during the manufacturing process of the container You just have to. This is sufficient strength because structural support during the pressurized transport of CNG will instead be provided by the outer composite layer 200.

The outer composite layer 200 using at least one fiber layer may be a fiber-reinforced polymer. The composite layer 200 may be based, for example, on glass or carbon / graphite or aramid fibers or a combination thereof. The outer composite layer is used as a reinforcement that completely encloses the exterior of the first layer 100, including the ends 11, 12 of the container, and provides structural strength for the container during service.

In the case of glass fiber, it is preferable to use E-glass or S-glass fiber, but it is not limited thereto.

Preferably, the glass fibers have a proposed tensile strength of at least 1,500 MPa and / or a proposed Young's modulus of at least 70 GPa.

In the case of carbon fibers, it is preferable, but not limited, to use carbon yarns having a tensile strength of at least 3,200 MPa and / or a proposed Young's modulus of at least 230 GPa.

Preferably, there are 12,000, 24,000 or 48,000 filaments per yarn.

The composite matrix is preferably a polymer resin, thermosetting or thermoplastic. In the case of a thermosetting resin, it may be an epoxy resin.

The formation of the outer composite layer 200 on the metal liner (first layer 100) preferably includes winding techniques. This technology can provide high efficiency in short manufacturing time. Moreover, the winding technique can give good accuracy in fiber orientation and also can provide good quality reproducibility.

Large pressure vessels are used for water transport of CNG. A length of tens of meters is common. Due to the size of these containers and the techniques used to make them, the containers are valuable and are worth protecting in the best possible way.

The pressure vessel 110 of FIG. 2 is provided with an opening 120 (here provided with a cap or connector) for gas dropping and releasing and liquid discharge. The opening is provided at the bottom end 112 and may be a 12 inch (30 cm) opening for connection to tubing, e.g., CNG distribution (unloading) tubing.

The vessel also has an opening 31 at the top end 111, and in this embodiment the opening is in the form of a manhole 30. Preferably, the manhole is an access manhole (or more preferably a 24 inch (60 cm) manhole) having a width of at least 18 inches (45 cm), such as a manhole with a sealable lid. Preferably, the manhole conforms to the ASME standard. The manhole is provided with a closure means 31, for example by bolting the manhole to sealingly close the opening. The opening allows, for example, a person to enter the container and examine the interior of the container.

The pressure vessel of FIG. 2 is protected by two protective pads 404 and one protective ring 405. Each of these protective elements 404, 405 includes at least one layer of cushioning and thermal insulation material 402 (of the kind described above) that is in direct contact with the outer surface 115 of the pressure vessel. Each of the protective elements 404 and 405 also includes an outer skirt 406 made of a structurally rigid or semi-rigid material, also of the kind described above.

Although the manner and purpose of the protective elements 404 and 405 of this second embodiment are essentially the same as those of the first embodiment, the geometrical structure is the same as the geometry of the protective elements 202 and 204 of the first embodiment The padded members have a buffering action on the external supporting force acting on the pressure vessel 110 and a thermal insulation function against the stored CNG in order to minimize the fluctuating stress due to the variable internal pressure in the supporting position .

The first protective element 404 of the embodiment shown in Fig. 2 has two protective pads, each wrapping around a portion of the cross-section, e.g. around the circumference and length of the container. The second protective element of this embodiment comprises a single ring of a thermal insulation material with an envelope wrapped completely around the circumference of the container, i.e. around the entire circumference, which also has a certain length.

Each protective element 404,405 is connected to the support means 500 of the container to support the container 110 in use.

Again an earthing member may be provided.

Figure 3 shows another embodiment of a CNG pressure vessel 610 supported vertically on a CNG transport vessel through a support means 700 which includes a closing and sealing means such as a boat fastening flange 631 An upper portion 611 having a manhole 630 that can be closed and sealed by a gasket 631 and a CNG pipe for dropping the CNG from the container 610 and dropping the CNG from the container 610 And a lower end portion 612 having a lower side hole 620.

Fig. 3 schematically shows various differences between a conventional support or a conventionally supported pressure vessel and a support according to the invention and / or a pressure vessel. The right portion of the pressure vessel 610 shown about the vertical axis 609 represents "prior art " and is accordingly indicated in Fig. The left portion of the pressure vessel 610 of FIG. 3 is supported by supports 660 and 670 which are shown and buffered in accordance with the present invention. The buffered upper support 660 and the buffered lower support 670 each include a layer of buffering and thermal insulation material 664 and 674 having outer skirts 662 and 672 of a rigid or semi-rigid construction material . The influence of the thermal insulation material 664, 674 and the outer skirt on the pressure / force / stress / strain transmitted to the container 610 by the support means 700 is as described above. However, here, FIG. 3 mainly shows differences in local force, pressure, and strain distribution in a pressure vessel between the prior art and the present invention.

The pressure vessel of Figure 3 is supported by two conventional upper and lower supports 650, 651 and is shown schematically on the right. The upper support portion 650 is located on the upper end 611 side of the pressure vessel 610 and the lower support portion 651 is located on the lower end portion 612 side of the container. Like the support of the present invention, traditional supports 650 and 651 may have different geometries. The known geometry is ring. For example, in FIG. 3, a steel ring can be a support 650, which surrounds the pressure vessel 610 around the horizontal section of the upper portion 611 of the pressure vessel 610.

The pressure vessel is held in place on the vessel by the two supports (650, 651). The total bearing force required to support the vessels in place on the vessel is dispersed between the two supports 650 and 651, and in the case of each support, the bearing forces are distributed over a small contact area between the vessel and its support. Because both the pressure vessel 610 and the support 650 are made of structural material (or because there is no layer that provides mechanical conformity between the vessel and each prior art support 650, 651), the pressure vessel is locally relatively high Stress, or deformation (see arrows "655 " in FIG. 3; this arrow indicates such a local interaction). Providing the wider supports 650 and 651 will reduce the magnitude of the localized pressure 655 but the contact between the pressure vessel and each of the supports 650 and 651 is less likely to occur between the pressure vessel 610 and its prior art support Local interactions will still reach the top in small areas, mainly due to stiff coupling, which will occur mainly along lines or small areas.

It is shown that the corresponding "strain area" 655 of the pressure vessel 610, i.e. the area undergoing a potentially high deformation in the pressure vessel, is next to the lower support 651. Such a deformation may be a deformation of the pressure vessel itself.

In contrast, on the left side, it is schematically shown that the pressure vessel 610 is supported by the supports 660, 670 according to the invention. Each of the supports 660 and 670 includes an inner layer of attenuation and thermal insulation material 664 and 674 and support portions 660 and 670 connected to the support means 700 for supporting the pressure vessel on the vessel 710. [ And an outer layer of rigid or semi-rigid structural members 662, Assuming that the total bearing force is the same as the force transferred to the container 610 by the conventional supports 650 and 651 on the right side of Figure 3 then the pressure vessel 666 in contact with the padded supports 660 and 670, A wider, more even distribution 667 of the local contact pressure, force, stress or deformation acting on the surface of the substrate (not shown) is obtained. While the pressure vessel is being supported on the vessel 710 by the system of the present invention, any top force acting on the pressure vessel will be "flattened " or spread, Which can potentially be less damaging than the best power you can make. The corresponding deformation area 675 is shown in the lower portion 612 of the container 610 corresponding to the padded lower support 670. The deformation area spans a wider area than the area covered by the deformation area of the prior art support 651 and is a deformation of the enclosure or the insulating material rather than a deformation of the pressure vessel itself.

The total force handled by the support 670 is represented by the letter "F" and corresponding arrows in Fig. In the above comparison, it is assumed that F is the same for the padded supports 660, 670 and the non-padded supports 650, 651 because they represent the highest load that occurs during transport in rough seas.

Therefore, the present invention has the advantage that the risk of structural failure is generally reduced in a CNG pressure vessel installed in a ship, especially in a vertically supported CNG pressure vessel. This advantage is the result of the interaction of the padded supports 202, 404, 405, 660, 670 with the internal pressure and external bearing forces acting on the pressure vessel 10, 110, 610. With the support of the present invention, the internal pressure is shielded to some extent against the highest possible load and also from the temperature fluctuations of the external environment.

In particular, the external supporting force is buffered and dispersed over a wider area than in the prior art, so that the surface of the container can be less damaged. The upper half of FIG. 3 (where the load area 667 (the present invention) and the load area 655 (which can be directly compared) is directly comparable), the use of the present invention results in a wider load area, Less point loads.

The pressure vessel can contain, for example, raw natural gas at compression (e.g., CO 2 tolerance of up to 14%, H 2 S tolerance of up to 1,000 ppm or H 2 and CO 2 gas impurities or other impurities or corrosive species Such as raw CNG or RCNG, H 2 , or CO 2 or treated natural gas (methane), or raw natural gas or partially treated natural gas), such as raw gas directly from a borehole . However, a preferred use is CNG transportation, which is handled to a standard that can be delivered to original CNG, partially treated CNG or clean CNG (end users, such as commercial, industrial or residential users).

CNG can contain a variety of potential ingredients in variable proportions, some in the gaseous state and the other in a liquid state or a mixture of the two. These components generally comprise one or more of the following compounds: C 2 H 6 , C 3 H 8 , C 4 H 10 , C 5 H 12 , C 6 H 14 , C 7 H 16 , C 8 H 18 , C 9 + hydrocarbons, CO 2 and H 2 S, and potentially liquid toluene, diesel and octane and other impurities / species.

The present invention has been described above purely by way of example. And specific changes to the above-described embodiments are possible within the scope of the present invention defined in the appended claims.

Claims (23)

An apparatus comprising a pressure vessel for transporting CNG, said vessel comprising a vessel body for receiving and containing CNG and a layer of buffering and heat insulating material disposed outside said vessel for thermally insulating at least a portion of said vessel Wherein the buffering and heat insulating material is separate from the container body. The method according to claim 1,
Wherein the thermal insulation material is a combination of one or more of elastomers such as foam, polymer or rubber, or a mixture or laminate of such materials. 3. The method according to claim 1 or 2,
A rigid or semi-rigid shell or skirt made of a structural material is in contact with at least a portion of the heat-insulating material. The method according to claim 1, 2, or 3,
And the heat insulating material surrounds the container body. 5. The method according to any one of claims 1 to 4,
Wherein the container body includes a cylindrical portion and the thermal insulating material at least encircles the cylindrical portion of the container body. The method according to claim 3, 4, or 5,
Said envelope or skirt extending around the circumference of said heat-insulating material. 7. The method according to any one of claims 3 to 6,
Further comprising support means for connecting the pressure vessel to its hull or deck so that the pressure vessel can be supported on the ship's hull or deck at a desired location, the support means being attached to the sheath or skirt Pressure vessel. 8. The method of claim 7,
Wherein the support means comprises a ring-shaped holder or bracket. An apparatus for supporting a CNG pressure vessel on a transport means,
Means for securing the device to the vehicle; And
Means for supporting at least one CNG pressure vessel on a transport means at a desired location,
The apparatus comprising a layer of a thermal insulation material for thermally insulating at least a portion of the at least one pressure vessel, the layer comprising at least one pressure when the at least one pressure vessel is supported by the support means of the apparatus And to form a buffer element of the device between the container and the support means. 10. The method of claim 9,
Wherein the device is adapted to support the pressure vessel in a substantially vertical direction. 11. The method according to claim 9 or 10,
Wherein the thermal insulation material layer comprises an elastomer such as foam, plastic or rubber, or a combination thereof. The method according to claim 9, 10 or 11,
A rigid or semi-rigid sheath or skirt made of a structural material is interposed between said pressure vessel support means and at least a portion of a thermal insulation material. 13. The method according to any one of claims 9 to 12,
Said thermal insulation material extending around a pressure vessel, for supporting the CNG pressure vessel on the transport means. 14. The method according to any one of claims 9 to 13,
Wherein the thermal insulation material is generally tubular. 15. The method according to claim 12, 13 or 14,
Wherein said shell or skirt extends to cover said thermal insulation material. 16. The method according to any one of claims 9 to 15,
Wherein the pressure vessel support means comprises a ring-shaped support member, for supporting the CNG pressure vessel on the transport means. 17. The method of claim 16,
Wherein the pressure vessel support means comprises another ring-shaped support member, the two ring-shaped support members being spaced apart from each other. 9. The method according to any one of claims 1 to 8,
17. Apparatus according to any one of claims 9 to 17. A pressure vessel substantially as described above with reference to any one of Figs. 1, 2 or 3. A marine CNG shipping vessel comprising at least one pressure vessel according to any one of the preceding claims. An apparatus for supporting a CNG pressure vessel substantially as described above with reference to any one of Figures 1, 2 or 3 on a vessel or boat. A method of storing and / or storing CNG in an aqueous phase, the method comprising the steps of loading, unloading, or storing or transporting CNG into a pressure vessel according to any one of claims 1 to 8, Lt; / RTI >
Wherein the pressure vessel is supported on the vessel by an apparatus according to any one of claims 9 to 19. A method for storing and / or transporting CNG in an aquarium. A method for installing a CNG pressure vessel on a vessel, the pressure vessel being according to any one of claims 1 to 8, and using a device according to any one of claims 9 to 19, Wherein the CNG pressure vessel is mounted on a ship.
KR1020147018586A 2011-12-05 2011-12-05 Pressure vessels and apparatus for supporting them onboard of ships KR20140111666A (en)

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