JPH0353200B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer facility for marine fluid cargo handling, and more particularly, to a fluid transportation vessel anchored offshore,
CALM (CATENERY ANCHOR LEG) is used as a relay facility for transporting fluids such as crude oil between bases installed on land.
This project concerns the improvement of a transfer facility for marine fluid cargo handling, known as MOORING.

As shown in FIG. 1, the above-mentioned offshore fluid cargo handling relay facility G, called Karum, consists of a submarine transport pipe 10 installed on the seabed and communicating with a land base (not shown), and this submarine transport pipe 10. offshore end 1
Marine fluid cargo handling hose 20 moored in the sea area of 0a
A mooring buoy 30 connected to the base 20b of the mooring buoy 30 and the offshore end 1 of the submarine transport pipe 10
The free end 20a of the fluid cargo handling hose 20 is connected to the cargo opening Sa of the fluid transport vessel S moored at the marine cargo handling relay facility G. This makes it possible to carry out cargo handling operations for transported fluids such as crude oil.

As shown in the figure, a plurality of floating bodies 50 are attached to each of the above-mentioned relay hoses 40 at predetermined intervals. This makes it possible to provide a good hose line (see solid line A in Fig. 2) that does not act as a strain.

However, the buoyancy of each of the floating bodies 50 attached to the conventional offshore fluid cargo handling transfer facility G cannot be freely adjusted by any means other than replacing them with floating bodies having different buoyancy. . Therefore, (1) When attempting to load and unload transported fluids with different specific gravities, the good hose lines of each of the relay hoses 40 will collapse, and unreasonable force will be applied to the relay hoses 40 and loading resistance will increase. In extreme cases, it may land on the seabed and be damaged by wind, waves, and currents. (See dotted line B in Figure 2) (2) As a result, it is extremely difficult to handle transported fluids with different specific gravities.

The current situation is that there are problems such as these.

The present invention was developed as a result of studies to solve the above-mentioned problems.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an excellent relay facility for marine fluid cargo handling that can easily and efficiently handle a plurality of types of transported fluids having different specific gravities using the same facility.

That is, the present invention relates to a submarine transport pipe installed on the seabed and communicating with a base on land, a mooring buoy moored to the offshore end of the submarine transport pipe in the sea area and connected to the base of a marine fluid cargo handling hose, and the mooring buoy. and a relay hose that connects the offshore end of the submarine transport pipe, and a buoyancy adjustment floating body whose buoyancy can be adjusted is attached to the intermediate part of the relay hose, and this buoyancy adjustment floating body and a mooring buoy are connected to each other. The gist is a relay facility for marine fluid cargo handling, which is characterized by connecting the installed supply and exhaust valves with ventilation pipes.

Hereinafter, the present invention will be specifically described by way of examples with reference to the drawings.

FIG. 3 is an explanatory front view, partially cut away, showing a relay facility for marine fluid cargo handling according to an embodiment of the present invention.

In the figure, E indicates a relay facility for marine fluid cargo handling according to an embodiment of the present invention, which includes a submarine transport pipe 10 installed on the seabed and communicating with a land base (not shown), and an offshore transport pipe 10 of this submarine transport pipe 10. Side end 10a
A mooring buoy 30 that is moored in the ocean area and connected to the base 20b of the marine fluid cargo handling hose 20;
It is constructed by attaching a buoyancy adjustment floating body 60 whose buoyancy can be adjusted to the middle part of this relay hose 40.

To further explain this structure, in this embodiment, the buoyancy adjusting floating body 60 is constructed by molding a rubber-like elastic body with a reinforcing layer (not shown) embedded therein into an airtight hollow cylindrical shape. The buoyancy adjusting floating body 60 and the air supply/exhaust valve 31 provided on the mooring buoy 30 are connected to each other by a ventilation pipe 70, as shown in FIG. By pressurizing air into the buoyancy adjusting floating body 60 through the buoyancy adjustment floating body 60, its buoyancy is increased, and when the supply/exhaust valve 31 is opened, the air inside the buoyancy adjusting floating body 60 is increased by water pressure. It is now possible to exhaust the air to the outside world and reduce its buoyancy. Therefore, the buoyancy of the buoyancy adjustment floating body 60 can be freely adjusted, and the buoyancy of the relay hose 40 can be freely adjusted.

Further, the buoyancy adjustment floating body 60 is not limited to the structure described above, but has a structure that is not crushed by water pressure, and is provided with a water passage hole (not shown) in the lower part, and the above-mentioned supply/exhaust valve 31 By pressurizing air into the buoyancy adjustment floating body 60 through the ventilation pipe 70 and draining the seawater inside the buoyancy adjustment floating body 60 from the water passage hole, its buoyancy is increased. When the supply/exhaust valve 31 is opened, the air in the buoyancy adjusting floating body 60 is exhausted to the outside world by the water pressure on the seabed, reducing the buoyancy of the buoyancy adjusting floating body 60. freely adjust the relay hose 4.
It may be configured such that the zero buoyancy can be adjusted freely.

As described above, the present invention includes a submarine transport pipe installed on the seabed and communicating with a base on land, and a mooring buoy moored in the sea area at the offshore end of the submarine transport pipe and connected to the base of a marine fluid cargo handling hose. , consisting of a relay hose that connects this mooring buoy and the offshore end of the submarine transport pipe, and in the middle of this relay hose,
Since the buoyancy adjustment floating body whose buoyancy can be adjusted is attached, the buoyancy of the relay hose can be freely adjusted by adjusting the buoyancy of the buoyancy adjustment floating body. Therefore, (1) Even when transporting fluids having different specific gravities are handled, it is possible to maintain a good hose line corresponding to the specific gravities. As a result, unreasonable force is not applied to the relay hose, cargo handling resistance does not increase, and the relay hose can be prevented from landing on the seabed and being damaged by wind waves and currents.

(2) Therefore, transported fluids with different specific gravities, such as crude oil with a high specific gravity and crude oil with a low specific gravity, can be easily handled by the same offshore fluid cargo handling relay facility.

(3) In addition, when there is no cargo handling work or during repairs, it may be necessary to replace the inside of each hose of a marine fluid cargo handling relay facility with seawater, but this can be made possible.

(4) The supply and exhaust valve installed on the mooring buoy and the floating body for buoyancy adjustment are connected through a ventilation pipe, and the air and water in and out of the floating body for buoyancy adjustment are controlled once by opening and closing the supply and exhaust valve installed on the mooring buoy. Therefore, the floating and sinking operation of the relay hose can be easily performed.

(5) The ventilation pipe connecting the supply and exhaust valve installed on the mooring buoy and the buoyancy adjustment floating body installed on the relay hose is
Since it coexists with the relay hose, it not only strengthens the relay hose, but also serves to prevent the entire relay hose from falling to the seabed in the event that the relay hose comes off the supply/exhaust valve. I can do it.

[Brief explanation of drawings]

Figure 1 is a perspective explanatory diagram showing a conventional relay facility for marine fluid cargo handling, and Figure 2 is a front view illustration illustrating the state of the relay hose when transporting fluids with different specific gravities are handled at the relay facility for marine fluid cargo handling. FIG. 3 is a partially cutaway front view explanatory view showing a relay facility for marine fluid cargo handling according to an embodiment of the present invention. 10... Submarine transport pipe, 10a... Submarine transport pipe 1
Offshore end of 0, 20...Hose for marine fluid cargo handling, 20b... Base of hose for marine fluid cargo handling, 3
0...Mooring buoy, 40...Relay hose, 60...
Floating body for buoyancy adjustment.

Claims (1)

[Claims] 1. A submarine transport pipe installed on the seabed and communicating with a base on land, a mooring buoy that is moored in the offshore end of this submarine transport pipe and connected to the base of a marine fluid cargo handling hose, and this mooring buoy and the above-mentioned submarine transport It consists of a relay hose that connects the offshore end of the pipe, and a buoyancy adjustment floating body whose buoyancy can be adjusted is attached to the middle part of this relay hose, and this buoyancy adjustment floating body and
A relay facility for marine fluid cargo handling characterized by connecting a supply and exhaust valve provided on a mooring buoy with a ventilation pipe.