JPS62291312A - Air-supply and discharging tube for floating and sinking device preventing intrusion of sea water - Google Patents

Abstract

PURPOSE:To prevent the intrusion of sea water into a floating and sinking device to be floated or sunk by the supply or discharge of air by a method in which, the end port of an air supply and discharge tube is positioned on the sea surface and a part of the air supply and discharge tube is positioned above the end port. CONSTITUTION:The end of an air supply and discharge tube 9 of a floating and sinking device 1, e.g., oil fence, etc., is put on a float 8, and the end port 14 of the tube 9 is positioned on the sea surface. A part of the tube 9 is bent into an inverted U-shaped form and positioned above the end port. Since the intrusion of sea water from the end port 14 into the device 14 is prevented by the action of the bent portion 15, the failure to refloat up the device 1 can be prevented.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention (Technical Field) This invention relates to an air supply and exhaust pipe for a flotation device, particularly an oil fence that prevents the spread of floating oil, and a silt fence that blocks the spread of underwater pollution. etc.

(Prior Art) Conventionally, as shown in FIG. 4, a compressor 4 in a pipe 3 is connected to an L gutter 2H to float and lower a flotation device 1 such as an oil fence or a silt fence. The air is supplied through the supply/discharge valve 5, from the piping 6 extending to the tip of the pier 2, and via the hose 7.
For floating and sinking, the compressor 4 was stopped, the supply/discharge valve 5 was opened to the atmosphere, and the air in the flotation device f was discharged, and the vessel was sinking. However, when the flotation device 1 is offshore, the hose 7 becomes long and causes inconvenience to ship navigation, etc., so the hose 7 and the piping 6 are separated and the end of the hose 7 is attached as shown in Fig. 5. A supply/exhaust pipe 9 fixed on the floating body 8 is connected as shown in FIG. The end port 14 may be exposed to waves, and seawater may enter and reach the flotation device 1 through the supply/exhaust pipe 9.

There were times when he became unable to float.

(Present Invention) The present invention solves the above-mentioned problems.In the supply/exhaust pipe of a flotation device that floats when supplied with air and sinks by discharging the air, the end of the supply/exhaust pipe is connected to a float. This is a supply and exhaust pipe for a sinking device that prevents seawater from entering, characterized in that the supply and exhaust pipe is located above the sea surface, and a part of the supply and exhaust pipe is located above the end port.

(Example) Fig. 1 is an overall view of the present invention, in which 1 is a flotation device such as an oil fence or a silt fence, and 8 is a floating device such as a urethane foam coated with a hard synthetic resin, or a hollow A float such as a metal body provides buoyancy to keep the air supply and exhaust pipe 9 floating above the sea surface. Reference numeral 10 denotes a valve at the end of the supply/exhaust pipe 9, to which a compressor 12 of a work boat 11 is connected, and air is fed under pressure to float the flotation device S11 above the seabed 13. Valve 10 is then closed and disconnected from the compressor.

Next, to sink the flotation device 1, open valve 1° and use a flotation device such as an oil fence! ! The air in the il is released to the atmosphere, and the flotation device 1 is sequentially lowered to the seabed 13. When the sinking device 1 has finished sinking and the exhaust has finished, the valve lO is released.
Close.

FIG. 2 is an enlarged drawing of the part of the present invention, and 15 is a part of the supply and exhaust pipe 9 located above the end port 14 of the supply and exhaust pipe 9, and in this case, it has an inverted U shape. Thus, even if the end port 14 is hit by waves or splashed during exhaust during the sinking process of the flotation device 1, it has a mechanism that prevents it from swallowing seawater.

What is shown in FIG. 3 is a modified example of the supply/exhaust pipe 9.
is without the Greek letter omega.

B is a type with a spiral shape that further strengthens the prevention of seawater intrusion, C is a type that rises in a meandering shape, rapidly reduces the force of seawater intrusion, and is discharged from the second end 14.

(Effects of the Invention) This invention places a part of the supply/exhaust pipe above the end of the pipe to prevent seawater from entering from the end during exhaust, and has the remarkable effect of allowing the flotation device to function satisfactorily over a long period of time. It is something.

[Brief explanation of drawings]

Fig. 1 is an overall view of the present invention, Fig. 2 is an enlarged view of a portion of the present invention, Fig. 3 is another embodiment of the present invention, Fig. 4 is an explanatory view of the conventional whole, and Fig. 5 is a conventional part. It is an explanatory diagram. 1...Flotation device, 2...Pier. 3...Operation room, 4...Compressor,
5... Supply/discharge valve, 6... Piping. 7...Hose, 8...Float. 9...Pa supply/discharge pipe, 1G...Valve, 1t...
・Work boat 12...Compressor, 13.
...Undersea -14...End. 15 fist: part of the supply and exhaust pipe located above the end port
, Patent applicant Patent attorney representing Pridgestone Co., Ltd.
Hide Kume - Representative Patent Attorney Suzuki
Etsu Part 1 Figure 1g Otsu Part 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] In a supply and exhaust pipe of a flotation device that floats when supplied with air and sinks by discharging the air, an end of the supply and exhaust pipe is located above the sea surface, and a part of the supply and exhaust pipe is located above the sea surface. An air supply and exhaust pipe for a flotation device that prevents seawater from entering by being located higher up.