CN117469597A

CN117469597A - Floating LNG transmission platform

Info

Publication number: CN117469597A
Application number: CN202311601426.8A
Authority: CN
Inventors: 刘洪亮; 袁姗; 乐小龙; 吴志华; 谢珉; 张孝奕
Original assignee: Shanghai Merchant Ship Design and Research Institute
Current assignee: Shanghai Merchant Ship Design and Research Institute
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-01-30

Abstract

The embodiment of the invention discloses a floating LNG transmission platform. The floating LNG transfer platform of the present invention comprises: a floating platform, a transmission system and a stabilization system; the floating platform comprises: the device comprises a box-type floating body, a stand column and a floating body platform; a cavity is formed in the floating body platform; the upright post is arranged on the floating body platform, and the box-type floating body is arranged on the upright post; the transmission system includes: a stationary hose, a flow controller, and a jumper hose; the flow controller is arranged on the floating body platform, and the shore-based storage device, the fixed hose, the flow controller, the bridging hose and the LNG carrier to be loaded and unloaded are sequentially communicated; the stabilization system is disposed on the floating platform. The floating LNG transmission platform adopts a brand new design thought, the LNG hose is fixedly laid on the sea floor, and the floating structure is changed, so that the floating LNG transmission platform has the advantages of simple structure, no need of winding and unwinding the LNG hose, no influence of wind and waves and the like.

Description

Floating LNG transmission platform

Technical Field

The embodiment of the invention relates to the technical field of ship manufacturing, in particular to a floating LNG (liquefied Natural gas) transmission platform.

Background

LNG is typically transported over long distances by large LNG carriers, received, stored and transported across the country by LNG transfer terminals. When LNG is loaded and unloaded, there is a case where a large LNG carrier cannot be berthed and unloaded due to mismatch between the dock construction and the LNG carrier size. For unloading large LNG carriers, either the quay is rebuilt or an LNG transfer platform is used.

The approval period and the construction period of the construction dock are long, usually 3-5 years are needed, and the construction cost is high.

LNG transfer platform, the basic principle is through cable from getting electric power and signal transmission on the bank, and the rethread floats in the LNG hose of surface of water and transports LNG. When LNG is transported, the influence of stormy waves on the LNG hose is considered, and a special device is required to be equipped for fixing; after the transfer is completed, the LNG hose needs to be stored in a special storage platform on the shore, is complex to use and low in efficiency, and is particularly unsuitable for loading and unloading a plurality of ships at the same time.

Disclosure of Invention

The embodiment of the invention provides a floating LNG (liquefied Natural gas) transmission platform, which aims at the defects that an LNG hose of the existing LNG transmission platform is difficult to retract and release, is complex to use, is easily influenced by wind waves, cannot load and unload a plurality of ships and the like, adopts a brand-new design thought, and has the advantages that the LNG hose is fixedly laid on the sea floor, and a floating structure is changed, so that the floating LNG transmission platform has a simple structure, does not need to retract and release the LNG hose, is not influenced by the wind waves and the like.

The invention provides a floating LNG transfer platform, comprising: a floating platform, a transmission system and a stabilization system;

the floating platform comprises: the device comprises a box-type floating body, a stand column and a floating body platform; a cavity is formed in the floating body platform and used for providing buoyancy; the upright post is arranged on the floating body platform, and the box-type floating body is arranged on the upright post;

the transmission system includes: a stationary hose, a flow controller, and a jumper hose; the fixed hose is laid under water, the flow controller is arranged on the floating body platform, one end of the fixed hose is communicated with the shore-based storage equipment, and the other end of the fixed hose is communicated with the flow controller; one end of the bridging hose is communicated with the flow controller, and the other end of the bridging hose is communicated with an LNG carrier to be loaded and unloaded;

the stabilizing system is arranged on the floating platform and is used for stabilizing the floating platform.

Optionally, a buffer cabin is further arranged in the floating body platform, the flow controller is communicated with the buffer cabin, and the bridging hose is communicated with the flow controller through the buffer cabin.

Optionally, the stabilizing system comprises: a controller and a stabilizing pump;

still include in the body platform: the stabilizing pump is electrically connected with the controller and communicated with the balancing cabin, and the stabilizing pump is used for adjusting the water level in the balancing cabin.

Optionally, the stabilizing pump is an air pump, a pressure relief hole is arranged at the bottom of the floating body platform, and the balance cabin is communicated with an external water body through the pressure relief hole.

Optionally, the center line of the pressure relief hole and the center line of the floating body platform are arranged at an acute angle, and the center line of the pressure relief hole does not intersect with the center line of the floating body platform.

Optionally, the method further comprises: the steering pump is arranged at the pressure relief hole and is electrically connected with the controller;

the pressure relief holes are multiple and symmetrically arranged.

Optionally, the floating body platform comprises two buffer cabins and two balance cabins, wherein the two buffer cabins are adjacently arranged, the two balance cabins are adjacently arranged, and the buffer cabins and the balance cabins are symmetrically arranged.

Optionally, the method further comprises: the photovoltaic power supply is arranged on the box-type floating body and is used for supplying power to the transmission system.

Optionally, the method further comprises: and the wireless communication module is arranged on the box-type floating body.

Optionally, the stationary hose comprises four liquid phase tubes and one gas phase tube.

The beneficial effects obtained by adopting the technical scheme are as follows: the fixed hose is laid under water, so that the influence of wind waves can be avoided without frequent winding and unwinding; meanwhile, the system can be far away from the LNG wharf, reduces dependence on the wharf, enables the LNG carrier to be capable of loading and unloading at any LNG wharf, and particularly, can be suitable for the situation that a plurality of LNG carriers are simultaneously loaded and unloaded, and improves loading and unloading efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a floating LNG transfer platform according to an embodiment of the present invention;

figure 2 is a cross-sectional view of a floating LNG transfer platform in accordance with an embodiment of the present invention;

FIG. 3 is an internal block diagram of a floating LNG transfer platform in accordance with an embodiment of the present invention;

fig. 4 is a cross-sectional view of a stationary hose in an embodiment of the invention.

Reference numerals in the drawings:

1. a floating platform; 101. a floating body platform; 102. a column; 103. a box-type floating body; 104. a transfer tube; 105. a buffer compartment; 106. a balancing cabin; 2. a transmission system; 201. fixing the hose; 202. a flow controller; 203. a jumper hose; 204. a liquid phase tube; 205. a gas phase tube; 3. a stabilization system; 301. a pressure relief hole; 302. and a steering pump.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; either directly, or indirectly, through intermediaries, may be in communication with each other, or may be in interaction with each other, unless explicitly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. The technical scheme of the invention is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.

As shown in fig. 1 to 4, the floating LNG transfer platform provided by the present invention includes: a floating platform 1, a transport system 2 and a stabilizing system 3.

Wherein the floating platform 1 comprises: a box float 103, a column 102 and a float platform 101. The floating body platform 101 is internally provided with a cavity, the floating body platform 101 is submerged in a water body, and the cavity is used for providing buoyancy. The columns 102 are provided on the floating platform 101 by welding or the like, or by screw threads or the like. The number of the columns 102 may be plural, and the columns 102 should be less affected by wind waves. The location of the column 102 should be at the surface of the water. The box-type floating body 103 is provided on the column 102, and the box-type floating body 103 is used for providing an operation platform for operating the LNG transfer.

The transmission system 2 includes: a stationary hose 201, a flow controller 202, and a jumper hose 203. Wherein, fixed hose 201 is fixed to be laid under water, and fixed hose 201's one end is switched on with bank-based storage equipment, and the other end is guided to the position that the degree of depth is convenient for LNG carrier berth, and is switched on with flow controller 202. The function of the current wave controller is to control the flow of LNG. One end of the jumper hose 203 is connected to the flow controller 202, and the other end is connected to the LNG carrier to be handled. The jumper hose 203 is disposed on the tank buoy 103, the jumper hose 203 is in communication with the flow controller 202 via the transfer tube 104, and the jumper hose 203 is in communication with the LNG storage within the LNG carrier via the flow controller 202.

The stabilizing system 3 is arranged on the floating platform 1, and the stabilizing system 3 is used for stabilizing the floating platform 1 so as to reduce the influence of wind waves on the floating platform 1.

The working principle of the floating LNG transmission platform is as follows: the floating platform 1 is fixed by the stabilizing system 3, so that the floating platform 101 on the floating platform 1 is kept in a relatively stable state; one end of a fixed hose 201 laid on the water is connected to an LNG storage device on the shore, the other end is connected with a flow controller 202, and the flow controller 202 is used for controlling the transportation (mainly pressure, flow and flow direction) of LNG; the floating platform 1 is set in a sea area suitable for the mooring of the LNG carrier, and is held in place (a position above the water surface and a relative position with respect to the LNG carrier) by the floating platform 101; the jumper hose 203 is in communication with the flow controller 202, and the jumper hose 203 is configured to be in communication with the LNG storage of the LNG carrier, such that the LNG carrier, the jumper hose 203, the flow controller 202, the stationary hose 201, and the shore-based LNG storage are in communication, thereby enabling transfer of LNG from the shore-based LNG storage to the LNG carrier or vice versa.

The floating LNG transmission platform adopts the beneficial effects of the technical scheme that: the fixed hose 201 is laid under water, so that the influence of wind waves can be avoided without frequent winding and unwinding; meanwhile, the system can be far away from the LNG wharf, reduces dependence on the wharf, enables the LNG carrier to be capable of loading and unloading at any LNG wharf, and particularly, can be suitable for the situation that a plurality of LNG carriers are simultaneously loaded and unloaded, and improves loading and unloading efficiency.

Optionally, a buffer compartment 105 is also provided within floating platform 101, and flow controller 202 is in communication with buffer compartment 105, and jumper hose 203 is in communication with flow controller 202 through buffer compartment 105. As shown in fig. 2, jumper hose 203 is in communication with buffer chamber 105 via transfer tube 104 and then in communication with flow controller 202. It should be noted that, fig. 2 is only a schematic structural diagram illustrating that the jumper hose 203, the adapter tube 104, the buffer chamber 105 and the flow controller 202 are in communication, and does not represent a specific mechanical structure; wherein the flow controller 202 may be a valve with a multi-directional flow delivery function, the buffer tank 105 only serves as a space for temporarily storing LNG, and reduces the influence of fluid transmission fluctuation on the pipeline.

By adopting the technical scheme, the buffer cabin 105 is added, so that the pressure fluctuation of LNG loading and unloading can be reduced, the stability of transmission is improved, and the influence of the pressure fluctuation on a pipeline is avoided.

Optionally, the stabilizing system 3 comprises: a controller and a stabilizing pump.

Wherein, still include in the body platform 101: balance pod 106. The purpose of the balance pod 106 is to internally provide for water storage, buoyancy adjustment, height adjustment of the floating platform 101, etc. The stabilizing pump is electrically connected with the controller, the stabilizing pump is conducted with the balance cabin 106, and the stabilizing pump can adjust air or water in the balance cabin 106, so that the buoyancy of the floating platform 101 can be dynamically adjusted.

By adopting the technical scheme, the buoyancy of the floating body platform 101 can be adjusted in a targeted manner, the fluctuation influence of wind waves on the floating body platform 101 is reduced, the dizziness of workers is avoided, the smooth operation is realized, and the efficiency is improved.

Optionally, the stabilizing pump is an air pump, the bottom of the floating platform 101 is provided with a pressure relief hole 301, and the balance cabin 106 is communicated with the external water body through the pressure relief hole 301. The air pump is arranged at the top of the balance cabin 106, so that air in the balance cabin 106 leaks out during negative pressure, and the buoyancy is reduced; the air in the balance chamber 106 increases at positive pressure and the buoyancy increases.

By adopting the technical scheme, buoyancy is easy to control, particularly air is rapidly filled and discharged, and the sensitivity of wind and wave resistance can be improved.

Optionally, the centerline of relief hole 301 is disposed at an acute angle to the centerline of floating platform 101, and the centerline of relief hole 301 does not intersect the centerline of floating platform 101.

With this solution, the pressure relief holes 301 are located at the edges of the floating platform 101, which provides a lateral force to the floating platform 101 that can be used to rotate the floating platform 101.

Optionally, the method further comprises: the steering pump 302, the steering pump 302 is arranged at the pressure relief hole 301 and is electrically connected with the controller;

the pressure relief holes 301 are plural and are symmetrically arranged.

By adopting the technical scheme, the speed of discharging water can be improved by additionally arranging the steering pump 302, so that the wind and wave resistance is greatly improved. The pressure relief holes 301 are symmetrically arranged to provide symmetrical forces to make the floating platform 1 more stable.

Optionally, the floating platform 101 includes two buffer tanks 105 and two balance tanks 106, the two buffer tanks 105 are disposed adjacent to each other, the two balance tanks 106 are disposed adjacent to each other, and the buffer tanks 105 and the balance tanks 106 are disposed symmetrically.

When four tanks are present in floating platform 101, as shown in fig. 3, the four tanks are considered as four quadrants, so buffer tanks 105 and balance tanks 106 may be located in opposite quadrants (e.g., two buffer tanks 105 are located in the first quadrant and the third quadrant, respectively), and two balance tanks 106 may be located in adjacent quadrants (e.g., two buffer tanks 105 are located in the first quadrant and the second quadrant, respectively, and two balance tanks 106 are located in the third quadrant and the fourth quadrant, respectively), and the latter is used in this embodiment because the LNG is mainly anti-sway when resisting wind waves, and only LNG is located in two adjacent tanks (buffer tanks 105) and the balance-adjusting water is located in two adjacent tanks (balance tanks 106), so that the swing caused by wind waves can be better counteracted.

Optionally, the method further comprises: and the photovoltaic power supply is arranged on the box-type floating body 103 and is used for supplying power to the transmission system.

Through setting up photovoltaic power supply, can provide electric power for this floating LNG transmission platform, just so need not to supply power through the shore power.

Optionally, the method further comprises: and a wireless communication module arranged on the box-type floating body 103.

By adopting the technical scheme, wireless communication can be realized without pulling wires.

Optionally, the stationary hose comprises four liquid phase tubes 204 and one gas phase tube 205.

By adopting the technical scheme, the floating LNG carrier can load and unload a plurality of LNG carriers, so that the loading and unloading efficiency is improved.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact between the first feature and the second feature, or an indirect contact between the first feature and the second feature through an intervening medium.

Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is at a lower level than the second feature.

In the description of the present specification, reference to the description of the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. A floating LNG transfer platform, comprising: a floating platform, a transmission system and a stabilization system;

2. The floating LNG transfer platform of claim 1, wherein a buffer compartment is further provided within the floating platform, the flow controller is in communication with the buffer compartment, and the jumper hose is in communication with the flow controller through the buffer compartment.

3. The floating LNG transfer platform of claim 2, wherein the stabilizing system comprises: a controller and a stabilizing pump;

4. The floating LNG transfer platform of claim 3, wherein the stabilizing pump is an air pump, a pressure relief hole is provided in the bottom of the floating platform, and the balance pod is in communication with an external body of water through the pressure relief hole.

5. The floating LNG transfer platform of claim 4, wherein a centerline of the pressure relief vent is disposed at an acute angle to a centerline of the floating platform, and wherein the centerline of the pressure relief vent does not intersect the centerline of the floating platform.

6. The floating LNG transfer platform of claim 5, further comprising: the steering pump is arranged at the pressure relief hole and is electrically connected with the controller;

the pressure relief holes are multiple and symmetrically arranged.

7. The floating LNG transfer platform of claim 6, wherein the floating platform includes two said buffer tanks and two said balance tanks, two said buffer tanks are disposed adjacent, two said balance tanks are disposed adjacent, and said buffer tanks and said balance tanks are disposed symmetrically.

8. The floating LNG transfer platform of claim 7, further comprising: the photovoltaic power supply is arranged on the box-type floating body and is used for supplying power to the transmission system.

9. The floating LNG transfer platform of claim 8, further comprising: and the wireless communication module is arranged on the box-type floating body.

10. The floating LNG transfer platform of claim 9, wherein the stationary hoses comprise four liquid phase pipes and one gas phase pipe.