WO2016021950A1 - 액화가스 저장탱크의 펌프타워 - Google Patents
액화가스 저장탱크의 펌프타워 Download PDFInfo
- Publication number
- WO2016021950A1 WO2016021950A1 PCT/KR2015/008233 KR2015008233W WO2016021950A1 WO 2016021950 A1 WO2016021950 A1 WO 2016021950A1 KR 2015008233 W KR2015008233 W KR 2015008233W WO 2016021950 A1 WO2016021950 A1 WO 2016021950A1
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- WO
- WIPO (PCT)
- Prior art keywords
- lower body
- pump tower
- liquefied gas
- storage tank
- gas storage
- Prior art date
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Classifications
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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
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/022—Land-based bulk storage containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
- B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
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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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
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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
- F17C3/00—Vessels not under pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
- F04B2015/081—Liquefied gases
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0147—Shape complex
- F17C2201/0157—Polygonal
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/052—Size large (>1000 m3)
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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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/01—Reinforcing or suspension means
- F17C2203/011—Reinforcing means
- F17C2203/013—Reinforcing means in the vessel, e.g. columns
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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
- 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
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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
- 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
- F17C2203/0626—Multiple walls
- F17C2203/0629—Two walls
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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
- 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
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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
- 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
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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
- 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
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/033—Small pressure, e.g. for liquefied gas
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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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
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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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0171—Arrangement
- F17C2227/0178—Arrangement in the vessel
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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
- 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
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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
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/011—Barges
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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
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/011—Barges
- F17C2270/0115—Barges immerged
Definitions
- the present invention relates to a pump tower installed in the liquefied gas storage tank to supply or discharge the liquefied gas in the liquefied gas storage tank.
- Natural gas is transported in gaseous form through onshore or offshore gas pipelines, or liquefied, and transported to distant consumers while stored in liquefied gas carriers.
- liquefied gas such as LNG (Liquefied Natural Gas) or LPG (Liquefied Petroleum Gas) is obtained by cooling natural gas or petroleum gas to cryogenic temperature (approximately -163 °C in the case of LNG). Significantly reduced, it is very suitable for storage and transportation.
- LNG Liquefied Natural Gas
- LPG Liquefied Petroleum Gas
- Liquefied gas carriers such as LNG carriers
- a storage tank that can withstand cryogenic temperatures of liquefied gas It includes).
- a vessel such as an LNG Regasification Vessel (LVF), an LNG Floating Storage and Regasification Unit (FSRU), or an LNG FPSO (Floating) Production, storage and off-loading
- BMPPs barge mounted power plants
- FSPPs floating and storage power plants
- LNG RV is a LNG regasification facility installed on LNG carriers capable of magnetic navigation and floating.
- LNG FSRU is a structure that stores liquefied natural gas, which is unloaded from LNG carriers in a storage tank, and vaporizes liquefied natural gas to supply demand to land demand as needed.
- LNG FPSO is a marine natural gas. It is a structure used to directly liquefy and store in a storage tank after refining in, and to transfer the LNG stored in the storage tank to the LNG carrier if necessary.
- BMPP is a structure used to produce electricity at sea by installing power generation facilities on a barge
- FSPP is an offshore plant that generates electricity by installing power generation facilities and storage tanks on a floating structure at sea.
- These storage tanks can be classified into independent tank type and membrane type depending on whether the load of cargo is directly applied to the insulation.
- Membrane type storage tanks are generally divided into GT NO 96 type and TGZ Mark III type, and independent tank type storage tanks are divided into MOSS type and IHI-SPB type.
- the liquefied gas is supplied into the storage tank 10 and stored inside the storage tank 10, particularly near the front wall 12 of the storage tank 10, or stored.
- Pump tower 20 is installed to discharge the outside of the storage tank 10. Although it depends on the size of the liquefied gas storage tank 10, the pump tower 20 is a large structure having a height of about 30m in the case of a typical liquefied gas carrier.
- the conventional pump tower 20 has a substantially triangular prism shape so as to withstand the flow of liquefied gas due to the movement of the vessel during operation.
- Pipes 21, 22, and 23 are arranged at each corner of the triangular prism so as to form a substantially triangular plane in plan view, and the pipes 21, 22, and 23 are connected to each other to reinforce strength.
- Supporting reinforcements 25 are provided.
- three pipes having a substantially triangular shape have two discharge pumps (not shown) installed at the bottom thereof to discharge two liquefied gases in the storage tank 10.
- Discharge pipes 21 and 22 and one emergency pipe 23 provided with an emergency pump (not shown) are provided at the lower end.
- a filling pipe 24 for supplying liquefied gas into the storage tank 10 is usually provided adjacent to the emergency pipe 23.
- the pump tower 20 having such a structure is installed in such a way that the upper end of the pump tower is suspended above the storage tank 10 so as to cope with the dimensional change due to thermal deformation of the storage tank 10 and the bottom of the storage tank 10. It is not directly fixed to.
- the lower end of the pump tower 20 is connected to this support so that only the movement in a horizontal direction is limited by the support provided in the bottom of the storage tank 10, and a vertical displacement is possible.
- the present invention has been made in view of this point, and the present invention provides support even when the upper end of the pump tower is fixed to the upper part of the storage tank, even when the lower end of the pump tower is rotated by an external force in the same manner as the pendulum or is twisted. It is to provide a pump tower of the liquefied gas storage tank that can be stably supported by.
- the pump tower is installed inside the liquefied gas storage tank to supply or discharge the liquefied gas in the liquefied gas storage tank
- the discharge pump is installed at the bottom of the liquefied gas storage tank
- a discharge pipe used to discharge the liquefied gas An emergency pipe having an emergency pump installed at a bottom thereof;
- a support installed at the bottom of the liquefied gas storage tank to allow vertical displacement of the pump tower while limiting horizontal movement and rotation;
- the support includes a pump tower including a lower body fixed to the hull side, an upper body fixed to the pump tower side, and a wedge member interposed between the lower body and the upper body.
- the lower body may include a first lower body mounted on the bottom surface of the hull and a second lower body extending upward from the first lower body.
- the first lower body may be embedded in the insulation and sealing barrier of the liquefied gas storage tank.
- the first lower body and the second lower body may be hollow, and at least one of the first lower body and the second lower body may be filled with a heat insulating material therein.
- the first lower body may be stably fixed to the bottom surface by a plurality of ribs radially formed.
- the first lower body may have a hollow truncated cone shape and a heat insulating material may be filled therein.
- the upper body may include an inclined surface so as to have a wide upper portion and a narrow lower portion.
- the second lower body may be inserted into the upper body, and the wedge member may be positioned between the second lower body and the upper body.
- the wedge member may have a narrow shape on one side and a wide shape on the other side, and may be disposed between the lower body and the upper body such that the narrow side faces downward.
- the pump tower further includes a cover member coupled to the upper body to prevent separation of the wedge member and to press the wedge member in a direction in which the wedge member is inserted between the upper body and the lower body. Can be.
- the cover member and the upper body may be coupled by a bolt and a nut, and a spring washer may be interposed between the head of the bolt and the cover member.
- the discharge pipe, the emergency pipe, and the filling pipe may be arranged in a square pillar shape.
- the discharge pipe, the emergency pipe, and the filling pipe may be connected to each other by a reinforcing material.
- the reinforcement may extend in the horizontal direction.
- the reinforcing material may be installed on a horizontal plane so that a quadrangle of four reinforcing materials is formed as a vertex and the four reinforcing materials are formed as a vertex.
- a pump tower installed inside the liquefied gas storage tank to supply or discharge the liquefied gas in the liquefied gas storage tank, allowing the vertical displacement of the pump tower while rotating Anti-rotation support is installed on the bottom of the liquefied gas storage tank to limit the;
- a horizontal movement preventing support installed at the bottom of the liquefied gas storage tank to allow vertical displacement of the pump tower and to limit horizontal movement; It includes, the anti-rotation support and the horizontal movement support, the lower body is fixed to the hull side, the upper body is fixed to the pump tower side, the wedge member interposed between the lower body and the upper body
- a pump tower is provided.
- the lower body of the anti-rotation support includes a first lower body mounted on the bottom surface of the hull and having the same height as the sealing and insulating barrier of the liquefied gas storage tank, and a second lower body extending from the first lower body. It may include.
- the first lower body may have a cylindrical shape
- the second lower body may have a rectangular cylinder shape.
- the first lower body may have a truncated cone shape
- the second lower body may have a cylindrical shape formed to face a flat surface
- the upper body of the anti-rotation support may include left and right inclined surfaces to have a wide top and a narrow rectangular barrel shape.
- the second lower body may be inserted into the upper body of the anti-rotation support, and the wedge member may be interposed in a state in which the wedge member is elastically pressed in a direction inserted between the left and right inclined surfaces and the second lower body. .
- the lower body of the horizontal movement preventing support is mounted on the bottom surface of the hull and the first lower body having the same height as the sealing and insulating barrier of the liquefied gas storage tank, and the second lower body extending from the first lower body It may include.
- the first lower body and the second lower body may have a cylindrical shape.
- the first lower body may have a truncated cone shape
- the second lower body may have a cylindrical shape
- the upper body of the horizontal movement prevention support may include an inner circumferential surface inclined so as to have a truncated cone shape having a wider upper portion and a narrower lower portion.
- the second lower body may be inserted into the upper body of the horizontal movement preventing support, and the wedge member may be interposed in a state in which the wedge member is elastically pressed in the direction inserted between the inner circumferential surface and the second lower body.
- the wedge member may be arranged in a plurality of circularly spaced apart from each other.
- a cover member for preventing separation of the wedge member may be coupled to the upper end of the upper body by a bolt and a nut, and the bolt may be positioned between the wedge members to maintain a gap between the wedge members.
- a liquefied gas storage tank capable of storing liquefied gas, comprising: a sealing and insulating barrier installed to prevent leakage of liquefied gas contained therein and to block heat transfer from the outside;
- a pump tower including pipes used to discharge liquefied gas in the liquefied gas storage tank or to supply liquefied gas into the liquefied gas storage tank;
- a liquid dome formed on an upper portion of the liquefied gas storage tank to fix the pump tower;
- the pump tower includes a support installed at the bottom of the liquefied gas storage tank to allow vertical displacement while limiting horizontal movement and rotation, the support being fixed to the hull side
- a liquefied gas storage tank including a body, an upper body fixed to the pump tower side, and a wedge member interposed between the lower body and the upper body.
- a pump tower of a liquefied gas storage tank may be provided.
- the wedge member disposed inside the support can absorb the displacement caused by the shaking or rotation of the pump tower, so that the stress applied to the pump tower installed to hang inside the liquefied gas storage tank can be absorbed. Can be reduced.
- FIG. 1 is a partial perspective view of a liquefied gas storage tank installed with a conventional pump tower
- Figure 2 is a partial cross-sectional view of a liquefied gas storage tank installed with a conventional pump tower
- FIG. 3 is a partial side cross-sectional view of a liquefied gas storage tank equipped with a pump tower according to the first embodiment of the present invention
- FIG. 4 is a partial front sectional view of a liquefied gas storage tank equipped with a pump tower according to the first embodiment of the present invention
- FIG. 5 is a plan view of a liquid dome portion of a liquefied gas storage tank equipped with a pump tower according to a first embodiment of the present invention
- FIG. 6 is a plan sectional view of a pump tower according to the first embodiment of the present invention.
- FIG. 7 is a side view showing a part of the lower end of the pump tower according to the first embodiment of the present invention.
- FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7 of the anti-rotation support according to the first embodiment of the present invention.
- FIG. 9 is an exploded view of the anti-rotation support of FIG. 8,
- FIG. 10 is a cross-sectional view taken along the line B-B of FIG. 7 of the horizontal movement preventing support according to the first embodiment of the present invention
- FIG. 11 is an exploded view of the horizontal movement preventing support of FIG.
- FIG. 12 is a cross-sectional view similar to FIG. 8 of the anti-rotation support according to the second embodiment of the present invention.
- Figure 13 is an exploded view of the anti-rotation support of Figure 12,
- FIG. 14 is a sectional view similar to FIG. 10 of a horizontal movement preventing support according to a second embodiment of the present invention.
- FIG. 15 is an exploded view of the horizontal movement preventing support of FIG.
- FIG. 3 and 4 are a side cross-sectional view and a front sectional view partially showing only a part of the liquefied gas storage tank in which the pump tower according to the embodiment of the present invention is installed, that is, the part where the pump tower is installed.
- Side sectional view of the liquefied gas storage tank shown in Figure 3 is a view of the liquefied gas storage tank in which the pump tower is installed from the port side of the hull
- sectional view of the liquefied gas storage tank shown in Figure 4 is a liquefied gas storage tank This is the view from the front of the hull where the pump tower is installed.
- FIG. 5 is a plan view partially showing a liquid dome portion of a liquefied gas storage tank in which a pump tower according to an embodiment of the present invention is installed, and FIG. 6 is along the AA line of FIG. 3. A cross-sectional plan view of a pump tower according to one embodiment of the invention taken is shown.
- the liquefied gas storage tank 10 may be used to store a liquid cargo including a hydrocarbon component that is liquefied at cryogenic temperature, in particular, LNG, LPG, and the like.
- the liquefied gas storage tank 10 may be a stand-alone tank or a membrane type tank having a sealed and heat insulating barrier so as to store cryogenic liquid cargo such as LNG.
- the liquefied gas storage tank 10 shown in FIGS. 3 and 4 has a sealing and insulating barrier 15 on the inner surface of the hull (ie, the inner surface of the inner wall 2 installed on the hull to form the storage tank).
- the sealing and insulating barrier 15 is an inner wall in all directions of the storage tank 10, namely a front wall, in order to prevent leakage of liquefied gas contained in the storage tank 10 and to block heat transfer from the outside.
- the rear wall, the left wall, the right wall, the upper wall and the lower wall are all laminated.
- Liquefied gas storage tank 10 in which the pump tower 30 according to an embodiment of the present invention is installed may be installed in the hull of the offshore structure.
- the offshore structure refers to various liquefied gas carriers such as LNG carriers, LNG RV (LNG Regasification Vessel) vessels, LNG FPSO (LNG Floating, Production, Storage and Off-loading), Oil FPSO
- LNG FSRU LNG Floating Storage and Regasification Unit
- LNG FRU LNG Floating and Regasification Unit
- BMPP Barge Mounted Power Plant
- FSPP Floating and Storage Power Plant
- the pump tower 30 has a square pillar shape in which four pipes are arranged at each corner.
- the pump tower 30 having a substantially rectangular pillar shape has two discharge pumps 31a and 32a disposed at lower ends thereof, respectively, used to discharge liquefied gas in the storage tank 10.
- Filling pipes (34) are arranged at the corners.
- Each pipe 31, 32, 33, 34 is connected to each other by a stiffener 35 extending in the horizontal direction.
- the upper end of the pump tower 30 according to the embodiment of the present invention is fixed to the liquid dome (17), the lower end in the horizontal direction by the anti-moving support 40 and the anti-rotation support 50 Only the movement and rotation of the is installed to be regulated and the movement in the vertical direction is not limited. As such, the lower end of the pump tower 30 is not fixedly installed at the bottom of the storage tank 10, and thus, the total length of the pump tower may be allowed to change due to the storage and discharge of the liquefied gas.
- the expression that the pump tower moves in the horizontal direction indicates that the lower end of the pump tower is completely pendulum due to the deformation of the storage tank or the flow of liquefied gas.
- the pump tower is rotated as described above, and the expression that the pump tower rotates means that the pump tower is twisted as a whole because the bottom of the pump tower rotates while the top of the pump tower is fixed.
- the pump tower 30 may be equipped with a sampling pipe or various electric cableways installed to extract a part of the liquefied gas and analyze the components. Description is omitted.
- the reinforcement 35 When the liquefied gas stored in the liquefied gas storage tank 10 flows, the reinforcement 35 has a shape having a height lower than that of the width to minimize the flow resistance. Further, according to the embodiment of the present invention, the reinforcing material 35 extends only in the horizontal direction in order to connect the pipes 31, 32, 33, 34, and is not obliquely installed. By omitting the reinforcement installed in an oblique direction, the flow resistance of the liquefied gas applied to the pump tower can be minimized.
- One reinforcement 35 is installed between the two pipes to connect the pipes 31, 32, 33, and 34, respectively, and as shown in FIGS. 5 and 6, four reinforcements 35 are connected to one set.
- a quadrangle having four pipes as vertices and four reinforcing materials 35 as sides is formed in plan view. That is, the four stiffeners 35 are attached in a substantially horizontal plane.
- the lower portion of the pump tower 30 may be installed more closely to the reinforcement for cooperation with the strength reinforcement and horizontal movement prevention support 40 and the anti-rotation support (50).
- the lower portion of the pump tower 30, is installed on the bottom of the liquefied gas storage tank 10, the horizontal movement prevention support to prevent the horizontal movement of the pump tower 30
- the first widthwise reinforcement 36a extending horizontally in the width direction of the pump tower, and the first and second radial reinforcement 36b extending radially horizontally from the anti-moving support 40; 36c) is installed.
- a lower portion of the pump tower 30 is installed at the bottom of the liquefied gas storage tank 10 to prevent the pump tower 30 from rotating around the horizontal movement preventing support 40.
- the 2nd width direction reinforcement 36d which extends horizontally in the width direction of a pump tower is provided.
- the pump tower 30 may have a total quadrangular shape of four pipes 21, 22, 23, and 24 in plan view. Arranged so as to form an approximately square pillar as a whole. As a result, the flow path area when the liquefied gas flows in the lateral direction of the hull and the flow path area when the liquefied gas flows in the front-rear direction of the hull do not change significantly. It is possible to prevent the large flow load from acting.
- the flow load applied to the pump tower can be maintained at a substantially constant level, so that it is not necessary to reinforce the pump tower more than necessary in view of the maximum flow load. Accordingly, it is possible to secure the required level of strength even by using less reinforcement to connect the pipes forming the pump tower to reinforce the pump tower.
- the first embodiment of the present invention which is installed to limit the movement and rotation in the horizontal direction of the pump tower 30 installed so that the upper end is fixed to the storage tank 10, is provided.
- the configuration and operation of the horizontal movement preventing support 40 and the anti-rotation support 50 will be described.
- FIG. 7 is a side view partially showing a lower portion of the pump tower in which the horizontal movement preventing support 40 and the anti-rotation support 50 according to the first embodiment of the present invention are located.
- 8 and 9 are cross-sectional views and exploded views of the anti-rotation support 50 according to the first embodiment of the present invention, and
- FIGS. 10 and 11 show the horizontal movement preventing support according to the first embodiment of the present invention.
- a cross sectional and exploded view of 40) is shown.
- the lower end of the pump tower 30 is fixedly installed at the bottom of the storage tank 10 so that the pump tower may be deformed due to the storage and discharge of the liquefied gas to allow the entire length to be changed. It doesn't work.
- the expression that the pump tower moves in the horizontal direction means that the lower end of the pump tower is shaken like a pendulum due to the deformation of the storage tank or the flow of liquefied gas, the expression that the pump tower is rotated The lower end of the pump tower rotates while the upper end is fixed, which means that the pump tower is twisted as a whole.
- the horizontal movement preventing support 40 and the anti-rotation support 50 pass through the sealing and heat insulating barrier 15 of the storage tank 10, and the hull. It can be seen that it is installed on the bottom surface 14 constituting the.
- the pump tower is viewed from the port side, the horizontal movement preventing support 40 is disposed on the bow side as compared to the anti-rotation support 50.
- the anti-rotation support 50 includes a lower body 51 fixedly mounted on the bottom surface 14 constituting part of the hull, and a pump. And an upper body 53 fixedly mounted to the tower 30, and a wedge member 54 interposed between the upper body 53 and the lower body 51.
- the lower body 51 of the anti-rotation support 50 has a hollow cylindrical shape, for example, and may be filled with a heat insulator. More specifically, the lower body 51 is a hollow first lower body 51a which is mounted directly to the bottom surface 14 of the hull and has approximately the same height as the sealing and insulating barrier 15 of the storage tank, It may include a hollow second lower body (51b) extending upward from the first lower body (51a).
- Insulating materials such as glass wool may be filled in the first lower body 51a, and insulating materials such as polyurethane foam may be filled in the second lower body 51b.
- the first lower body 51a may have a substantially cylindrical shape, and the second lower body 51b may have a substantially rectangular cylinder shape to prevent rotation.
- the first lower body 51a may be more stably fixed to the bottom surface 14 of the hull structure by the plurality of ribs 51c formed radially.
- a partition 51d may be provided between the first lower body 51a and the second lower body 51b so that the respective inner spaces do not communicate with each other.
- the upper body 53 of the anti-rotation support 50 has a rectangular cylinder shape, for example, so as to have a trapezoidal shape with a wide top and a narrow bottom when viewed from the bow or the stern of the hull as shown in FIGS. 8 and 9.
- Left and right inclined surfaces 53a and 53b are formed on the left and right sides of the upper body 53.
- the upper body 53 is fixed to the pump tower 30 is displaced with the pump tower (30).
- the reinforcement for example, the horizontal reinforcement 35 and the second width direction reinforcement installed in the lower end of the pump tower 30
- the upper body 53 can be fixed by welding or the like.
- the upper body 53 may be more stably fixed to the pump tower 30 side by a plurality of ribs (53c).
- the upper body 53 may be indirectly fixed to the reinforcement of the pump tower 30 through the connecting member 53d.
- the upper body 53 may be directly fixed to the pump tower 30 without using the connecting member 53d.
- the upper body 53 may be directly fixed to the pump tower 30, and the upper body 53 may be indirectly fixed to the pump tower 30 through the connecting member 53d.
- the second lower body 51b portion of the lower body 51 may be inserted into the upper body 53.
- a wedge member 54 is interposed between the left and right inclined surfaces 53a and 53b of the upper body 53 and the second lower body 51b of the lower body 51, respectively.
- the wedge member 54 has a narrow bottom and a wide top.
- the wedge member 54 is prevented from being separated through the upper opening of the upper body 53 and the wedge member 54 is inserted in the direction in which the wedge member 54 is inserted between the upper body 53 and the lower body 51.
- the cover member 55 is coupled to the upper end of the upper body 53 so as to be pressurized.
- the cover member 55 may have a substantially square plate shape.
- the cover member 55 and the upper body 53 may be coupled by a bolt 56a and a nut 56b, and a flange may be formed at the upper end of the upper body 53 for this purpose.
- the nut 56b may be attached to the bolt 56a by welding, for example.
- a spring washer 57 may be interposed between the head of the bolt 56a and the cover member 55.
- the spring washer 57 is used to improve the reliability in the cryogenic environment, but the spring washer 57 may be replaced with a member having elasticity other than the washer.
- the wedge member 54 is interposed between the lower body 51 fixed to the hull and the upper body 53 fixed to the pump tower 30, the wedge member By changing the position of 54, the distance between the lower body 51 and the upper body 53 can be changed due to the heat deformation or the horizontal movement and rotation of the pump tower 30. That is, when the interval between the lower body 51 and the upper body 53 is widened, the wedge member 54 moves downward, and conversely, when the interval between the lower body 51 and the upper body 53 is narrowed, the wedge member is narrowed. By moving 54 upwards, the vertical displacement of the pump tower 30 is allowed while at the same time limiting the horizontal displacement, for example the rotation of the pump tower.
- the wedge member 54 is pressed by the cover member 55, but because the spring washer 57 elastically presses the wedge member 54, it may not interfere with the displacement of the wedge member 54. have.
- the horizontal movement preventing support 40 is somewhat different from the anti-rotation support 50 described above in its shape, but it can be seen that the principle and operation are similar.
- the horizontal movement preventing support 40 is a lower body 41 fixedly mounted on the bottom surface 14 constituting part of the hull. ), And an upper body 43 fixedly mounted to the pump tower 30, and a wedge member 44 interposed between the upper body 43 and the lower body 41.
- the lower body 41 of the horizontal movement prevention support 40 has, for example, a hollow cylindrical shape, and the heat insulating material may be filled therein. More specifically, the lower body 41 is a hollow first lower body 41a which is mounted directly to the bottom surface 14 of the hull and has approximately the same height as the sealing and insulating barrier 15 of the storage tank, It may include a hollow second lower body 41b extending upward from the first lower body 41a.
- Insulating materials such as glass wool may be filled in the first lower body 41a, and insulating materials such as polyurethane foam may be filled in the second lower body 41b.
- the first lower body 41a and the second lower body 41b may have a substantially cylindrical shape. Since the horizontal movement preventing support 40 is for preventing horizontal movement over all directions, the second lower body 51b and the upper body 53 of the anti-rotation support 50 have a substantially rectangular cylindrical shape, and thus, horizontal The second lower body 41b and the upper body 43 of the movement preventing support 40 have a substantially cylindrical shape.
- the first lower body 41a may be more stably fixed to the bottom surface 14 of the hull structure by the plurality of ribs 41c formed radially.
- a partition 41d may be installed between the first lower body 41a and the second lower body 41b so that the respective inner spaces do not communicate with each other.
- the upper body 43 of the anti-moving support 40 has a cylindrical shape, for example, and has a frustoconical shape with a wide top and a narrow bottom when viewed from the side as shown in FIGS. 10 and 11.
- the upper body 43 is formed with an inclined inner peripheral surface 43a.
- the upper body 43 is fixed to the pump tower 30 is displaced with the pump tower (30).
- the reinforcement for example, horizontal reinforcement 35 and the first width direction reinforcement installed in the lower end of the pump tower 30
- the upper body 43 can be fixed by welding or the like.
- the upper body 43 may be more stably fixed to the pump tower 30 side by a plurality of ribs (43c).
- the upper body 43 may be indirectly fixed to the reinforcement of the pump tower 30 through the connecting member 43d.
- the upper body 43 may be directly fixed to the pump tower 30 without using the connecting member 43d.
- the upper body 43 may be directly fixed to the pump tower 30, and the upper body 43 may be indirectly fixed to the pump tower 30 through the connecting member 43d.
- the second lower body 41b portion of the lower body 41 may be inserted into the upper body 43.
- a wedge member 44 is interposed between the inner circumferential surface 43a of the upper body 43 and the second lower body 41b of the lower body 41, respectively.
- the wedge member 44 has a tapered shape with a narrow lower side and a wider upper side, and may be interposed between the inner circumferential surface 43a of the substantially upper upper body 43 and the second lower body 41b of the lower body 41. So that it has a curved shape.
- the wedge members 54 are positioned one each on the left and right sides, but in the anti-moving support 40, the wedge members 44 are arranged in a circle with a plurality of spaced apart from each other. For example, eight wedge members 44 having the same curvature may be arranged in a circle.
- the wedge member 44 is prevented from being separated through the upper opening of the upper body 43, and the wedge member 44 is inserted in the direction in which the wedge member 44 is inserted between the upper body 43 and the lower body 41.
- the cover member 45 is coupled to the upper end of the upper body 43 so as to be pressurized.
- the cover member 45 may have a substantially ring shape.
- the cover member 45 and the upper body 43 may be coupled by a bolt 46a and a nut 46b, and a flange may be formed at the lower end of the upper body 43 for this purpose.
- the nut 46b may be attached to the bolt 46a by welding, for example.
- the bolts 46a and the wedge members 44 are alternately arranged so that the bolts 46a are positioned one by one between the wedge members 44.
- the bolt 46a may serve to maintain a gap between the plurality of wedge members 44.
- a spring washer 47 may be interposed between the head of the bolt 46a and the cover member 45.
- the spring washer 47 is used to improve the reliability in the cryogenic environment, but the spring washer 47 may be replaced with a member having elasticity other than the washer.
- the wedge member 44 is interposed between the lower body 41 fixed to the hull and the upper body 43 fixed to the pump tower 30, the wedge
- the distance between the lower body 41 and the upper body 43 can be changed due to the heat deformation or the horizontal movement and rotation of the pump tower 30. . That is, when the interval between the lower body 41 and the upper body 43 is widened, the wedge member 44 moves downward, and conversely, when the interval between the lower body 41 and the upper body 43 is narrowed, the wedge member.
- the wedge member 44 By moving the 44 upwards, the vertical displacement of the pump tower 30 can be allowed while the horizontal displacement can be limited.
- the wedge member 44 is pressed by the cover member 45, but is elastically pressurized by the wedge member 44 by the spring washer 47, it may not prevent the displacement of the wedge member 44. have.
- the second embodiment of the present invention which is installed to limit the movement and rotation in the horizontal direction of the pump tower 30 is installed so that the upper end is fixed to the storage tank (10)
- the configuration and operation of the horizontal movement preventing support 140 and the anti-rotation support 150 will be described.
- FIGS. 12 and 13 are sectional views and exploded views of the anti-rotation support 150 according to the second embodiment of the present invention
- FIGS. 14 and 15 show the horizontal movement prevention support according to the second embodiment of the present invention.
- a cross-sectional and exploded view of 140 is shown.
- the anti-rotation support 150 is fixedly mounted on the bottom surface 14 constituting part of the hull, similarly to the first embodiment described above. And a lower body 151, an upper body 153 fixedly mounted to the pump tower 30, and a wedge member 154 interposed between the upper body 153 and the lower body 151.
- the lower body 151 of the anti-rotation support 150 may have a substantially hollow cone shape, for example, and a heat insulating material may be filled therein. More specifically, the lower body 151 is a hollow first lower body 151a which is mounted directly to the bottom surface 14 of the hull and has approximately the same height as the sealing and insulating barrier 15 of the storage tank, It may include a hollow second lower body 151b extending upward from the first lower body 151a.
- the first lower body 151a may have a roughly truncated cone shape, and a heat insulating material such as glass wool may be filled in the first lower body 151a.
- the second lower body 151b may have a substantially cylindrical shape having a pair of flat side surfaces, and a heat insulating material such as polyurethane foam may be filled in the second lower body 151b.
- the inside of the second lower body 151b may be kept empty without a heat insulating material.
- the wedge member 154 On the flat side of the second lower body 151b, as described below, the wedge member 154 is disposed to abut, and the protection member 151e is provided to protect a portion in contact with the wedge member 154 and perform a lubrication function. Can be attached.
- a partition 151d may be installed between the first lower body 151a and the second lower body 151b so that the respective inner spaces do not communicate with each other.
- the first lower body 51a is more stably fixed to the bottom surface 14 of the hull structure by the plurality of ribs 51c formed radially.
- the first lower body 151a has a truncated cone shape and can be stably fixed to the bottom surface 14.
- the upper body 153 of the anti-rotation support 150 has a rectangular cylinder shape, for example, and as shown in Figure 12, the upper body so as to have a trapezoidal shape with a wide top and a narrow bottom when viewed from the bow or the stern of the hull ( Left and right inclined surfaces 153a and 153b are formed on the left and right sides of the 153.
- the upper body 153 is fixed to the pump tower 30 is displaced with the pump tower (30).
- the upper body 153 may be fixed to the pump tower 30 through the connecting member (153d).
- the upper body 153 may be indirectly fixed to the pump tower 30 through the connecting member 153d, as shown in the figure, pump pump the upper body 153 without using the connecting member (153d) ( It can also be fixed directly to 30).
- the upper body 153 may be directly fixed to the pump tower 30, and the upper body 153 may be indirectly fixed to the pump tower 30 through the connecting member 153d. .
- the second lower body 151b portion of the lower body 151 may be inserted into the upper body 153.
- Wedge members 154 are interposed between the left and right inclined surfaces 153a and 153b of the upper body 153 and the second lower body 151b of the lower body 151, respectively.
- the wedge member 154 has a narrow bottom and a wide top.
- the wedge member 154 is prevented from being separated through the upper opening of the upper body 153, and the wedge member 154 is inserted in the direction in which the wedge member 154 is inserted between the upper body 153 and the lower body 151.
- the cover member 155 is coupled to the upper end of the upper body 153 so as to be pressurized.
- the cover member 155 may have a substantially square plate shape.
- the cover member 155 and the upper body 153 may be coupled by a bolt 156a and a nut 156b, and a flange may be formed at an upper end of the upper body 153. After the fastening of the bolt 156a and the nut 156b is completed, the nut 156b may be attached to the bolt 156a by welding, for example.
- a spring washer 157 may be interposed between the head of the bolt 156a and the cover member 155.
- the spring washer 157 is used to improve the reliability in the cryogenic environment, but the spring washer 157 may be replaced with a member having elasticity other than the washer.
- the wedge member 154 is interposed between the lower body 151 fixed to the hull and the upper body 153 fixed to the pump tower 30, the wedge member
- the distance between the lower body 151 and the upper body 153 may change due to thermal deformation or horizontal movement and rotation of the pump tower 30. That is, when the interval between the lower body 151 and the upper body 153 is widened, the wedge member 154 moves downward, and conversely, when the interval between the lower body 151 and the upper body 153 is narrowed, the wedge member.
- the vertical displacement of the pump tower 30 is allowed while at the same time limiting the horizontal displacement, such as rotation of the pump tower.
- the wedge member 154 is pressed by the cover member 155, but is elastically pressurized by the wedge member 154 by the spring washer 157, thereby preventing the displacement of the wedge member 154. have.
- the horizontal movement preventing support 140 is somewhat different from the above-described anti-rotation support 150 in the shape, it can be seen that the principle and operation are similar.
- the horizontal movement preventing support 140 As shown in Figure 14 and 15, the horizontal movement preventing support 140 according to the second embodiment of the present invention, the lower body 141 is fixedly mounted on the bottom surface 14 constituting a part of the hull ), And an upper body 143 fixedly mounted to the pump tower 30, and a wedge member 144 interposed between the upper body 143 and the lower body 141.
- the lower body 141 of the horizontal movement preventing support 140 has, for example, a substantially hollow cone shape, and the heat insulating material may be filled therein. More specifically, the lower body 141 is a hollow first lower body 141a which is mounted directly to the bottom surface 14 of the hull and has approximately the same height as the sealing and insulating barrier 15 of the storage tank, It may include a hollow second lower body 141b extending upward from the first lower body 141a.
- the first lower body 141a may have a roughly truncated cone shape, and a heat insulating material such as glass wool may be filled in the first lower body 141a.
- the second lower body 141b may have a substantially cylindrical shape, and the second lower body 141b may be filled with a heat insulating material such as a polyurethane foam.
- the inside of the second lower body 141b may be kept empty without a heat insulator.
- the second lower body 151b of the anti-rotation support 150 has a flat surface and the upper body 153 has a substantially rectangular tube shape. Unlike having, the second lower body 141b and the upper body 143 of the horizontal movement preventing support 140 have a substantially cylindrical shape.
- the first lower body 41a is more stably formed on the bottom surface 14 of the hull structure by the plurality of ribs 41c formed radially. Although it is formed to be fixed, in the case of the horizontal movement preventing support 140 of the second embodiment, the first lower body 141a has a truncated cone shape and can be stably fixed to the bottom surface 14.
- the wedge member 144 is arranged to be in contact with the circular shape, and the protection member 141e for protecting the portion in contact with the wedge member 144 and performing a lubrication function.
- the protection member 141e may have a cylindrical shape having an upper portion closed substantially, and may be installed to cover the second lower body 141b.
- the protection member 141e and the second lower body 141b may be coupled by fastening members such as bolts.
- a partition 141d may be installed between the first lower body 141a and the second lower body 141b so that the respective inner spaces do not communicate with each other.
- the upper body 143 of the horizontal movement prevention support 140 for example, has a cylindrical shape, as shown in Figure 14, the upper body so as to have a frustoconical form of a wide top and a narrow bottom when viewed from the side ( Inclined inner peripheral surface 143a is formed in 143.
- the upper body 143 is fixed to the pump tower 30 is displaced with the pump tower (30).
- the upper body 143 may be fixed to the pump tower 30 through the connecting member 143d.
- the upper body 143 may be indirectly fixed to the pump tower 30 through the connecting member 143d, as shown in the figure, pump pump the upper body 143 without using the connecting member (143d) ( It can also be fixed directly to 30).
- the upper body 143 may be directly fixed to the pump tower 30, and the upper body 143 may be indirectly fixed to the pump tower 30 through the connecting member 143d. .
- the upper body 143 may be more stably fixed to the connection member 143d by the reinforcement 143c having a wider and narrower truncated cone shape.
- the second lower body 141b portion of the lower body 141 may be inserted into the upper body 143.
- the wedge member 144 is interposed between the inner circumferential surface 143a of the upper body 143 and the second lower body 141b of the lower body 141.
- the wedge member 144 has a tapered shape with a narrow bottom and a wide top, and may be interposed between the inner circumferential surface 143a of the upper body 143 and the second lower body 141b of the lower body 141 which are approximately circular. So that it has a curved shape.
- the wedge members 154 are positioned one by one on the left and right sides, but in the horizontal movement prevention support 140, the wedge members 144 are arranged in a circle with a plurality of spaced apart from each other. For example, eight wedge members 144 having the same curvature may be arranged in a circle.
- the wedge member 144 is prevented from being separated through the upper opening of the upper body 143, and the wedge member 144 is inserted in the direction in which the wedge member 144 is inserted between the upper body 143 and the lower body 141.
- the cover member 145 is coupled to the upper end of the upper body 143 so as to be pressurized.
- the cover member 145 may have a substantially ring shape.
- the cover member 145 and the upper body 143 may be coupled by the bolt 146a and the nut 146b in the state of being interposed between the wedge member 144, and for this purpose, a flange is provided at the lower end of the upper body 143. Can be formed. After the fastening of the bolt 146a and the nut 146b is completed, the nut 146b may be attached to the bolt 146a by welding, for example.
- FIG. 15 only two bolts 146a, nuts 146b, and spring washers 147 are shown. However, these are merely for convenience of illustration and are actually the same number of bolts as the number of wedge members 144. 146a, nut 146b and spring washer 147 are required respectively.
- the bolts 146a and the wedge members 144 are alternately arranged so that the bolts 146a are positioned one by one between the wedge members 144.
- the bolt 146a may serve to maintain a gap between the plurality of wedge members 144.
- a spring washer 147 may be interposed between the head of the bolt 146a and the cover member 145.
- the spring washer 147 is used to improve the reliability in the cryogenic environment, but the spring washer 147 may be replaced with a member having elasticity other than the washer.
- the wedge member 144 is interposed between the lower body 141 fixed to the hull and the upper body 143 fixed to the pump tower 30, the wedge By changing the position of the member 144, the distance between the lower body 141 and the upper body 143 can be changed due to the heat deformation or the horizontal movement and rotation of the pump tower 30. . That is, when the gap between the lower body 141 and the upper body 143 becomes wider, the wedge member 144 moves downward, and conversely, when the gap between the lower body 141 and the upper body 143 becomes narrower, the wedge member. By moving 144 upward, the vertical displacement of the pump tower 30 can be allowed while the horizontal displacement can be limited.
- the wedge member 144 is pressed by the cover member 145, but is elastically pressurized by the wedge member 144 by the spring washer 147, it may not interfere with the displacement of the wedge member 144. have.
Abstract
Description
Claims (25)
- 액화가스 저장탱크의 내부에 액화가스를 공급하거나 배출시킬 수 있도록 액화가스 저장탱크의 내부에 설치되는 펌프타워로서,하단에 배출펌프가 설치되어 상기 액화가스 저장탱크 내의 액화가스를 배출시키기 위해 사용되는 배출용 파이프와;하단에 비상용 펌프가 설치되어 있는 비상용 파이프와;상기 액화가스 저장탱크 내에 액화가스를 공급하기 위한 충전용 파이프와;상기 배출용 파이프, 상기 비상용 파이프, 및 상기 충전용 파이프를 서로 연결하는 보강재와;상기 펌프타워의 수직방향 변위를 허용하는 한편 수평방향 이동 및 회전을 제한하기 위해 상기 액화가스 저장탱크의 바닥에 설치되는 서포트; 를 포함하며,상기 서포트는, 선체 측에 고정되는 하부몸체와, 상기 펌프타워 측에 고정되는 상부몸체와, 상기 하부몸체 및 상기 상부몸체 사이에 개재되는 쐐기부재를 포함하는, 펌프타워.
- 청구항 1에 있어서,상기 하부몸체는, 선체의 바닥면에 장착되는 제1 하부몸체와, 상기 제1 하부몸체로부터 위쪽으로 연장하는 제2 하부몸체를 포함하며,상기 제1 하부몸체는 상기 액화가스 저장탱크의 단열 및 밀봉방벽 내에 매립되는, 펌프타워.
- 청구항 2에 있어서,상기 제1 하부몸체 및 상기 제2 하부몸체는 중공으로 형성되고, 상기 제1 하부몸체 및 상기 제2 하부몸체 중 적어도 하나는 내부에 단열재가 충전되는, 펌프타워.
- 청구항 2에 있어서,상기 제1 하부몸체는 방사상으로 형성되는 복수개의 리브에 의해 상기 바닥면에 안정적으로 고정되는, 펌프타워.
- 청구항 2에 있어서,상기 제1 하부몸체는 중공의 절두원추 형상을 가지며, 내부에 단열재가 충전되는, 펌프타워.
- 청구항 1에 있어서,상기 상부몸체는, 위쪽이 넓고 아래쪽이 좁은 형태를 갖도록 경사진 표면을 포함하는, 펌프타워.
- 청구항 2에 있어서,상기 제2 하부몸체는 상기 상부몸체 내에 삽입되고, 상기 쐐기부재는 상기 제2 하부몸체와 상기 상부몸체 사이에 위치되는, 펌프타워.
- 청구항 1에 있어서,상기 쐐기부재는 일측이 좁고 타측이 넓은 형상을 가지며, 좁은 쪽이 아래를 향하도록 상기 하부몸체와 상기 상부몸체 사이에 배치되는, 펌프타워.
- 청구항 1에 있어서,상기 쐐기부재의 이탈을 방지하고, 상기 쐐기부재가 상기 상부몸체와 상기 하부몸체 사이로 삽입되는 방향으로 상기 쐐기부재를 가압할 수 있도록 상기 상부몸체에 결합되는 덮개부재를 더 포함하는, 펌프타워.
- 청구항 9에 있어서,상기 덮개부재와 상기 상부몸체는 볼트 및 너트에 의해 결합되고, 상기 볼트의 머리부와 상기 덮개부재 사이에는 스프링 와셔가 개재되는, 펌프타워.
- 청구항 1에 있어서,상기 배출용 파이프, 상기 비상용 파이프, 및 상기 충전용 파이프가 사각기둥 형태로 배열되어 이루어지는, 펌프타워.
- 청구항 11에 있어서,상기 배출용 파이프, 상기 비상용 파이프, 및 상기 충전용 파이프는 보강재에 의해 서로 연결되는, 펌프타워.
- 청구항 12에 있어서,상기 보강재는 수평방향으로 연장하는, 펌프타워.
- 청구항 12에 있어서,상기 보강재는 4개가 한 조를 이루어, 상기 배출용 파이프, 상기 비상용 파이프, 및 상기 충전용 파이프를 꼭지점으로 하고 4개의 상기 보강재를 변으로 하는 사각형이 형성되도록 수평면상에 설치되는, 펌프타워.
- 액화가스 저장탱크의 내부에 액화가스를 공급하거나 배출시킬 수 있도록 액화가스 저장탱크의 내부에 설치되는 펌프타워로서,상기 펌프타워의 수직방향 변위를 허용하는 한편 회전을 제한하기 위해 상기 액화가스 저장탱크의 바닥에 설치되는 회전방지 서포트와;상기 펌프타워의 수직방향 변위를 허용하는 한편 수평방향 이동을 제한하기 위해 상기 액화가스 저장탱크의 바닥에 설치되는 수평이동방지 서포트; 를 포함하며,상기 회전방지 서포트 및 상기 수평이동방지 서포트는, 선체 측에 고정되는 하부몸체와, 상기 펌프타워 측에 고정되는 상부몸체와, 상기 하부몸체 및 상기 상부몸체 사이에 개재되는 쐐기부재를 각각 포함하는, 펌프타워.
- 청구항 15에 있어서,상기 회전방지 서포트의 하부몸체는, 선체의 바닥면에 장착되고 상기 액화가스 저장탱크의 밀봉 및 단열방벽과 동일한 높이를 갖는 제1 하부몸체와, 상기 제1 하부몸체로부터 연장하는 제2 하부몸체를 포함하는, 펌프타워.
- 청구항 16에 있어서,상기 제1 하부몸체는 원통 형상을 갖고, 상기 제2 하부몸체는 사각통 형상을 가지는, 펌프타워.
- 청구항 16에 있어서,상기 제1 하부몸체는 절두원추 형상을 갖고, 상기 제2 하부몸체는 평평한 면이 마주보도록 형성된 원통 형상을 가지는, 펌프타워.
- 청구항 16에 있어서,상기 회전방지 서포트의 상부몸체는 위쪽이 넓고 아래쪽이 좁은 사각통 형상을 갖도록 좌측 및 우측 경사면을 포함하며,상기 회전방지 서포트의 상부몸체의 내부에는 상기 제2 하부몸체가 삽입되고, 상기 쐐기부재는 상기 좌측 및 우측 경사면과 상기 제2 하부몸체 사이로 삽입되는 방향으로 탄성적으로 가압되는 상태로 개재되는, 펌프타워.
- 청구항 15에 있어서,상기 수평이동방지 서포트의 하부몸체는, 선체의 바닥면에 장착되고 상기 액화가스 저장탱크의 밀봉 및 단열방벽과 동일한 높이를 갖는 제1 하부몸체와, 상기 제1 하부몸체로부터 연장하는 제2 하부몸체를 포함하는, 펌프타워.
- 청구항 20에 있어서,상기 제1 하부몸체 및 상기 제2 하부몸체는 원통 형상을 가지는, 펌프타워.
- 청구항 20에 있어서,상기 제1 하부몸체는 절두원추 형상을 갖고, 상기 제2 하부몸체는 원통 형상을 가지는, 펌프타워.
- 청구항 20에 있어서,상기 수평이동방지 서포트의 상부몸체는 위쪽이 넓고 아래쪽이 좁은 절두원추 형상을 갖도록 경사진 내주면을 포함하며,상기 수평이동방지 서포트의 상부몸체의 내부에는 상기 제2 하부몸체가 삽입되고, 상기 쐐기부재는 상기 내주면과 상기 제2 하부몸체 사이로 삽입되는 방향으로 탄성적으로 가압되는 상태로 개재되는, 펌프타워.
- 청구항 20에 있어서,상기 쐐기부재는 복수개가 서로 간격을 두고 원형으로 배열되며,상기 상부몸체의 상단에는 상기 쐐기부재의 이탈을 방지하는 덮개부재가 볼트 및 너트에 의해 결합되며,상기 볼트는 상기 쐐기부재들 사이에 위치하여 상기 쐐기부재들 사이의 간격이 유지되도록 하는, 펌프타워.
- 액화가스를 저장할 수 있는 액화가스 저장탱크로서,수용되어 있는 액화가스의 누출을 방지하고 외부로부터의 열전달을 차단하기 위해 설치되는 밀봉 및 단열방벽과;상기 액화가스 저장탱크 내의 액화가스를 배출시키거나 상기 액화가스 저장탱크 내로 액화가스를 공급하기 위해 사용되는 파이프들을 포함하는 펌프타워와;상기 펌프타워가 고정될 수 있도록 상기 액화가스 저장탱크의 상부에 형성되는 리퀴드돔; 을 포함하며,상기 펌프타워는, 수직방향 변위를 허용하는 한편 수평방향 이동 및 회전을 제한하기 위해 상기 액화가스 저장탱크의 바닥에 설치되는 서포트를 포함하며,상기 서포트는, 선체 측에 고정되는 하부몸체와, 상기 펌프타워 측에 고정되는 상부몸체와, 상기 하부몸체 및 상기 상부몸체 사이에 개재되는 쐐기부재를 포함하는, 액화가스 저장탱크.
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AU2015299827A AU2015299827B2 (en) | 2014-08-06 | 2015-08-06 | Pump tower of liquefied gas storage tank |
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- 2015-08-06 US US15/502,174 patent/US10400953B2/en active Active
- 2015-08-06 JP JP2017506932A patent/JP6407406B2/ja active Active
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WO2018203005A3 (fr) * | 2017-05-05 | 2018-12-27 | Gaztransport Et Technigaz | Procede de manutention d'une cargaison de gaz liquefie et installation de stockage |
CN109219719A (zh) * | 2017-05-05 | 2019-01-15 | 气体运输技术公司 | 处理液化气体的货物的方法及储存装置 |
CN109219719B (zh) * | 2017-05-05 | 2022-09-13 | 气体运输技术公司 | 处理液化气体的货物的方法及储存装置 |
WO2022005235A1 (ko) * | 2020-07-03 | 2022-01-06 | 현대중공업 주식회사 | 액화가스 저장탱크 및 이를 포함하는 선박 |
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AU2015299827A1 (en) | 2017-02-16 |
CA2957401A1 (en) | 2016-02-11 |
AU2015299827B2 (en) | 2019-06-27 |
US20170219166A1 (en) | 2017-08-03 |
CA2957401C (en) | 2019-05-07 |
JP2017528361A (ja) | 2017-09-28 |
US10400953B2 (en) | 2019-09-03 |
JP6407406B2 (ja) | 2018-10-17 |
KR101591781B1 (ko) | 2016-02-04 |
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