CN211146078U

CN211146078U - Offshore liquefied natural gas unloading device

Info

Publication number: CN211146078U
Application number: CN201921468973.2U
Authority: CN
Inventors: 祝传钰; 徐立新; 袁远; 刘河敬; 阳仁俊; 陈文科; 王金光; 缪宸; 陈天; 罗文臣; 刘建成
Original assignee: China Merchants Marine Equipment Research Institute Co ltd
Current assignee: China Merchants Marine Equipment Research Institute Co ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-07-31
Anticipated expiration: 2029-09-05

Abstract

The utility model provides an coastal waters liquefied natural gas uninstallation device, including fixed L NG regasification platform, fixed L NG regasification platform includes upper portion module and jacket, the jacket is installed on the seabed, the upper portion module is fixed in the jacket top, upper portion module upper end is equipped with a plurality of low temperature hose cylinders and portable piping lane, be equipped with on the temperature hose cylinder and drive the low temperature hose that receive and releases, the other end of low temperature hose passes through portable piping lane and L NG ship connection, be fixed with the riser on the jacket, the one end and the low temperature hose connection of riser, the other end and the defeated submarine pipeline of riser are connected, the other end and land terminal or marine user of defeated submarine pipeline are connected, the utility model discloses still include L NG ship mooring facility, including mooring pile, mooring chain and flotation pontoon, the utility model discloses can realize L NG ship safe offshore uninstallation, area not connecting fixed L NG regasification platform and L NG ship through portable piping lane, effectively avoided the risk of striking, the operation risk is low.

Description

Offshore liquefied natural gas unloading device

Technical Field

The utility model relates to a liquefied natural gas warehousing and transportation technical field especially relates to an coastal waters liquefied natural gas uninstallation device.

Background

L NG (liquefied natural gas) is receiving more and more international attention as a low-carbon clean energy source, and L NG is the preferred fuel in many countries.

The L NG ship is important equipment for natural gas transportation, the L NG gasification wharf is the most important storage, pressurization and gasification equipment for L NG transportation, the L NG wharf unloads, stores, pressurizes and gasifies liquefied natural gas (L NG) transported by the L NG ship and then exports the liquefied natural gas, so that the wharf shoreline is occupied for a long time, the wharf shoreline also occupies a navigation channel and has the risk of collision with other ships.

SUMMERY OF THE UTILITY MODEL

To above problem, the utility model provides an offshore liquefied natural gas uninstallation device utilizes fixed L NG regasification platform, provides an offshore liquefied natural gas uninstallation and defeated device outward.

In order to achieve the purpose, the utility model provides an offshore liquefied natural gas uninstallation device, including fixed L NG regasification platform, fixed L NG regasification platform includes upper portion module and jacket, the jacket is installed on the seabed, the upper portion module is fixed in the jacket top, upper portion module upper end is equipped with a plurality of low temperature hose cylinders and portable piping lane, be equipped with the low temperature hose that can drive receive and release on the low temperature hose cylinder, the other end of low temperature hose passes through portable piping lane and is connected with L NG ship, be fixed with the riser on the jacket, the one end of riser is connected with the one end of low temperature hose, the other end of riser is connected with the one end of defeated submarine pipeline, the other end of defeated submarine pipeline is connected with land terminal or marine user.

The offshore floating platform further comprises L NG ship mooring facilities, wherein the L NG ship mooring facilities comprise mooring piles, mooring chains and buoys, the mooring piles are fixed on the seabed, one ends of the mooring chains are fixedly connected with the mooring piles, the other ends of the mooring chains are fixedly connected with the buoys, the buoys float on the sea surface, and the mooring cables are fixedly connected with the buoys.

Furthermore, one end of the movable pipe gallery is fixed at the upper end of the upper module of the fixed L NG regasification platform, and the other end of the movable pipe gallery can rotate and change the amplitude at will.

Furthermore, a L NG regasification system and a L NG storage tank storage and power generation system are arranged on the fixed L NG regasification platform.

The utility model has the advantages that:

1. the safe offshore unloading of L NG ships can be realized, and no port area is occupied.

2. And an offshore fixed L NG regasification platform is adopted, so that the investment is low and the reliability is high.

3. The utility model discloses a fixed L NG regasification platform and L NG ship are connected to long distance portable piping lane, and L NG ship does not lean on the berth uninstallation with fixed L NG regasification platform, has effectively avoided the risk of striking, and the operation risk is low.

4. The utility model discloses a portable piping lane cooperatees with the low temperature hose cylinder, realizes the pipe connection of fixed L NG regasification platform and L NG ship, and strong adaptability, low temperature hose can contactless sea water, need not consider the sea water corruption, and it is low to the hose requirement, and the piping lane is portable, and low temperature hose length is adjustable, can adapt to the uninstallation of the L NG ship of different specifications.

5. The utility model discloses can satisfy the L NG ship operation requirement of various specifications.

6. The utility model discloses a mooring mode design is nimble, and is applicable in various depth of water and sea condition.

7. The utility model discloses from traditional L NG ship mooring, uninstallation and the defeated mode of regasification outward that changes in principle, nevertheless do not change original L NG ship's structure basically, can be compatible with traditional FSRU, the commonality is strong.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

The system comprises a fixed L NG regasification platform, an upper module, a jacket, a low-temperature hose roller, a movable pipe gallery, a low-temperature hose, a 7-L NG ship, a mooring cable, a buoy, a mooring chain, a riser 12, an export submarine pipeline, a mooring pile, a land terminal and a pipeline, wherein the fixed L NG regasification platform is 1, the upper module is 2, the jacket is 3, the low-temperature hose roller is 4, the movable pipe gallery is 5, the low-temperature hose is 6.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 and 2, the offshore lng offloading device comprises a fixed L NG regasification platform 1, wherein the fixed L NG regasification platform 1 comprises an upper module 2 and a jacket 3, the jacket 3 is mounted on a seabed, the upper module 2 is fixed above the jacket 3, the jacket 3 provides support for the upper module 2, a plurality of common systems (not shown) such as a cryogenic hose drum 4, a movable pipe gallery 5, a L NG regasification system, a L NG storage tank storage and power generation system are arranged at the upper end of the upper module 2, a cryogenic hose 6 capable of being retracted and driven is arranged on the cryogenic hose drum 4, the other end of the cryogenic hose 6 is connected with a NG L ship 7 through the movable pipe gallery 5, one end of the movable pipe gallery 5 is fixed at the upper end of the upper module 2 of the fixed L NG regasification platform 1, the other end of the movable pipe gallery 5 can rotate freely, a riser 11 is fixed on the variable amplitude frame 3, the riser 11 is used for connecting the cryogenic hose 6 with an external transport subsea pipeline 12, and the other end of the external transport subsea pipeline 12 is connected with a.

A plurality of L NG ship mooring facilities are fixed on the seabed at a certain safety distance from the fixed L NG regasification platform 1, each L NG ship mooring facility comprises a mooring pile 13, a mooring chain 10 and a buoy 9, the mooring piles 13 are fixed on the seabed, one end of each mooring chain 10 is fixedly connected with the mooring piles 13, the other end of each mooring chain 10 is fixedly connected with the buoy 9, the buoy 9 floats on the sea surface, and the mooring cables 8 are fixedly connected with the buoy 9.

When L NG vessel 7 needs to be moored to unload the gas, L NG vessel 7 is connected to buoy 9 via mooring line 8 on board the vessel so that L NG vessel 7 is fixed offshore at a safe distance from stationary L NG regasification platform 1.

The utility model discloses a working process is:

when an L NG ship 7 arrives at a working site, a mooring cable 8 is connected with a buoy 9 to realize mooring of a L NG ship, and meanwhile, a safety distance is kept between the fixed type L NG gasification platform 1 to avoid collision, the outer end of a movable pipe gallery 5 on an upper module 2 of the fixed type L NG gasification platform moves to the position above one side of a L NG ship to drive a low-temperature hose roller 4, a low-temperature hose 6 is placed at an upper interface of a deck of a L NG ship 7 to realize connection unloading with the L NG ship 7, L NG is carried out, the gasified L NG is conveyed to a land terminal 14 through a riser 11 on a guide pipe frame 3 and a seabed external conveying pipeline 12, after unloading is completed, the low-temperature hose roller 4 is driven to recover the low-temperature hose 6, and the position of the movable pipe gallery 5 is adjusted to.

Claims

1. An offshore liquefied natural gas unloading device comprises a fixed L NG regasification platform and is characterized in that the fixed L NG regasification platform comprises an upper module and a jacket, the jacket is mounted on a seabed, the upper module is fixed above the jacket, a plurality of low-temperature hose drums and a movable pipe gallery are arranged at the upper end of the upper module, low-temperature hoses capable of being driven to be stored and released are arranged on the low-temperature hose drums, the other ends of the low-temperature hoses are connected with a L NG ship through the movable pipe gallery, a vertical pipe is fixed on the jacket, one end of the vertical pipe is connected with one end of the low-temperature hose, the other end of the vertical pipe is connected with one end of an external seabed pipeline, and the other end of the external seabed pipeline is connected with a land terminal or a user.

2. The offshore lng offloading device of claim 1, further comprising an L NG vessel mooring facility, wherein the L NG vessel mooring facility comprises a mooring pile, a mooring chain and a buoy, the mooring pile is fixed on the seabed, one end of the mooring chain is fixedly connected with the mooring pile, the other end of the mooring chain is fixedly connected with the buoy, the buoy floats on the sea surface, and the L NG vessel is provided with a mooring line, and the mooring line is fixedly connected with the buoy.

3. The offshore lng offloading device of claim 1, wherein one end of the movable pipe rack is fixed to the upper end of the upper module of the fixed L NG regasification platform, and the other end of the movable pipe rack can rotate and change its amplitude freely.

4. The offshore lng offloading device of claim 1, wherein the fixed L NG regasification platform further comprises a L NG regasification system, a L NG storage tank storage and power generation system.