JPH04501150A - floating boom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] floating boom Technical field The present invention includes a plurality of separate buoyancy chambers, a skirt, a tow crust chain, and an air supply. In particular, the buoyancy chamber is located at one end of the skirt. ballast is placed at the other end, and the floating boom is installed at the other end. each buoyancy chamber has an air supply pipe communicating with the other; Regarding floating booms. The present invention also provides a floating boom of the above type with an air supply. The present invention relates to a method using a floating boom in which the feed pipe is located at the other end of the skirt.

Background technology Floating booms of the type described above are generally known, in which the buoyancy chamber is It is designed to be a closed chamber with a supply pipe and in some cases a floating boot. Contains a valve for exhausting air from the buoyancy chamber for retrieval of the buoyancy chamber. Also, this kind of The floating boom increases the buoyancy above the inlet pressure to the air supply pipe to avoid bursting the buoyancy chamber. It is necessary to place the force below the bursting pressure of the chamber (if the buoyancy force of the chamber is If one becomes punctured, all buoyancy chambers will be emptied via a common air supply pipe. , and the floating boom sinks.

Disclosure of invention The floating boom according to the present invention has a buoyancy chamber and a skirt for each buoyancy chamber from the inside of the buoyancy chamber. at least one duct extending to an outlet located between one edge of the It is characterized by the formation of a

Inlet pressure to the air supply pipe, which may provide even higher pressure inlet air The overpressure in the buoyancy chamber can be controlled without the need for any restrictions on the air supply tubes and the tube dimensions can be made smaller.

Each duct has an outlet located below the buoyancy chamber in use. Above float Expansion of the force chamber lowers the water level in the duct by increasing the pressure within the buoyancy chamber. This continues until the air bubbles out at the outlet of the duct. This discharge is when the pressure in the buoyancy chamber increases to such an extent that it spreads into the surrounding seawater outside the duct outlet. This causes the pressure within the buoyancy chamber to be limited to approximately the ambient water pressure.

Another advantage of the floating boom according to the invention is that the buoyancy chamber is emptied with respect to the recovery of the floating boom. The above ducts may be used to empty air.

In another preferred embodiment of the invention, the connection of each buoyancy chamber with the air supply tube It is characterized by being open to the inside of the duct installed in the room. . This cuts off the connection between the air supply pipes between the buoyancy chambers when the pressure drops, and the buoyancy in one chamber increases. A puncture in a chamber does not affect all other buoyancy chambers that may become empty. 1st room floating Due to the pressure drop in the force chamber, the surrounding water rises in the duct and reaches the outlet of the air supply pipe. However, this water pressure is equivalent to the pressure of the surrounding seawater at the level of the air supply pipe outlet. It is designed to be held in place by force to prevent air from entering from other buoyancy chambers. Ru.

In another preferred embodiment of the invention, the air supply pipe is located at one end of the skirt. The air supply pipe connects each buoyancy chamber with a branch pipe. It is characterized by the following. As a result, the connection structure between the air supply pipe and the buoyancy chamber is It can be particularly simple, resulting in ease of manufacture and use. completed branch An air supply pipe with a tube is attached to one end of the skirt and the branch pipe is attached to one end of the skirt. is inserted into the provided branch pipe, and the outlet of the branch pipe is thereby The air supply outlet is adapted to form an air supply outlet to a buoyancy chamber provided in the buoyancy chamber.

Furthermore, as another preferred embodiment of the present invention, each air supply pipe having an air supply pipe The connecting portion is characterized by being equipped with a check valve. This causes floating The air supply pipe between the force chambers is cut off, so if one buoyancy chamber is punctured, the remaining buoyancy The onset of any pressure drop in the room can be avoided. specifically used for this purpose A so-called check valve is provided in conjunction with an air supply control device for the drive unit. “It is a gill valve and is characterized by a very small pressure drop in the flow direction. Ru.

The method referred to in the preamble states that after the floating boom is inflated, the air supply pipe is filled with water. As a result, both buoyancy chambers are closed and even if a puncture occurs in one buoyancy chamber, any It does not act to empty other buoyancy chambers. In this case, a check valve is provided Therefore, the air supply pipe between the buoyancy chambers is ensured from the beginning, and this ensures that the air supply pipes between the buoyancy chambers are Even if a buoyancy chamber is punctured, pressure drop in the remaining buoyancy chambers can be prevented. The above The disconnection is designed so that water in the air supply pipes makes the connections of the air supply pipes of the individual buoyancy chambers watertight. come to use it.

Brief description of the drawing The invention can be explained in more detail by means of some embodiments with reference to the following drawings: FIG. 1 is a side view showing the floating boom according to the present invention in use; Figure 2 shows the branch pipe inserted into the duct outlet with one rubber sheet removed to make it clearer. The enlarged view of FIG. 3 in the removed state shows the embodiment shown in FIG. Figure 4 is a diagram showing the state in which the entire body is inserted into the interior and a check valve is formed, and Figure 4 is the same as Figure 2. FIG. 3 is a cross-sectional view taken along the II cross-sectional line.

BEST MODE FOR CARRYING OUT THE INVENTION The embodiment of the floating boom shown in FIG. and a duct 8 extending downward from the buoyancy chamber in use. Room 1 is provided. The skirt 2 is located below the buoyancy chamber 1. This ska The chain 2 has a fixing member 11 along its lower edge to hold the pallast chain 3. A reinforcing portion 10 is formed. The above-mentioned pallast chain 3 is Inside, a floating boom plays a role in maintaining a nearly vertical state. Branch pipe 7 An air supply pipe 4 having a diameter is held on the pallast chain 3. The branch pipe 7 is floating. It is inserted into a duct 8 within the force chamber 1.

The operation of the embodiment according to the invention shown in FIG. 1 can be understood by referring to FIG. 2 below. can be explained by .

The buoyancy chamber 1 is expanded by compressed air supplied through the supply pipe 4 and the branch pipe 7. It has become. The water level in the duct is initially equal to the height C of the surrounding sea level. Up As the pressure inside the buoyancy chamber is gradually increased, the water level decreases until the exit of the duct is reached. When the pressure reaches a height a and the pressure increases further, the air is discharged through the duct. . The water surface inside the duct after expansion has a height a. If this buoyancy chamber is The pressure above the water level in the duct decreases, resulting in a rise in the water level within the duct. and When the water surface reaches height b, the water flows down into the air supply pipe, cutting off communication between the buoyancy chambers. The water in the duct of the banked buoyancy chamber can then rise up to a height C; , the pressure at the exit of the floating boom is equal to the pressure of the surrounding seawater. easy In other words, when one buoyancy chamber banks, the pressure in the other buoyancy chamber is equal to the water at height a. pressure decreases from the water pressure at height b.

This pressure drop can be eliminated by using the method according to the invention.

This is due to the banked buoyancy of the water-filled air supply tube from an intact buoyancy chamber. This is because it blocks the transmission of air into the room. From the above description, it is clear that the method according to the invention can be used. It is clear that when used, it is important that the branch pipe 7 is inserted from below. Ru. The above-mentioned interruption is determined solely by the height b of the outlet of the air supply pipe.

According to the embodiment shown in FIG. This is ensured by a check valve 9 installed at 7. In Figure 3, the book In the embodiment, the air supply pipe is arranged at the lower end 6 of the skirt 2; It's not important.

The floating boom described above utilizes high inlet pressure to quickly inflate the boom. is proposed. From this point, the positive pressure in the buoyancy chamber 1 is the same as that in the duct. It is guaranteed that the pressure difference with the outlet of No. 8 will not be exceeded.

In the method according to the invention, the water-filled air supply pipe is pumped into the air supply pipe. Inject water or forcefully push one end of the air supply pipe into the water to allow water to flow. At the same time, the air in the air supply pipe is discharged through the outlet of the buoyancy chamber or from the outlet. It can be made effective by discharging it in the form of foam.

The possibilities of deformation of the floating boom according to the invention described above are many, namely the air supply pipe is placed in a duct provided within the buoyancy chamber, with an outlet formed for each buoyancy chamber. It is also possible to pass the upper edge of the The duct outlet of the buoyancy chamber can also be located at the bottom of the buoyancy chamber. For example, the rubber sheet 13 can be placed at any position on the floating boom. or 14 may be stopped above the lower end 6 of the floating boom, and this rubber It is also possible to provide an opening at a suitable position in either one of the ports 13 or 14.

The essential effects of the floating boom according to the invention are the retention of excess pressure in the buoyancy chamber and the In addition to other possible solutions to the problem of isolation between Increased need for services, overhauls, spare parts, staff training, etc. The point is that it can be solved without introducing other parts such as valves, which may occur. .

international search report international search report , PCT/IX 90100157

Claims (6)

[Claims] 1. Multiple separate buoyancy chambers, skirts, ballast chains, air supply pipes and The buoyancy chamber is located at one end of the skirt, and the ballast is located at the other end. , the other end is located below the first edge after the floating boom is installed, and the other end is located below the first edge after the floating boom is installed, In floating booms where the force chambers are individually connected via air supply pipes, a from the inside of the buoyancy chamber to the outlet located between the buoyancy chamber and one edge of the skirt. A floating boat characterized in that at least one duct is formed so as to extend from the Room. 2. The connection of each buoyancy chamber with an air supply pipe is directed into the duct provided in the buoyancy chamber. 2. A floating boom according to claim 1, wherein the floating boom is open at all times. 3. An air supply pipe is placed at one end of the skirt and this air supply pipe Claim 1 or is a floating boom according to any of paragraph 2. 4. Each air supply pipe connection with an air supply pipe shall be equipped with a check valve. A floating boom according to any one of claims 1 to 3, characterized in that: 5. Claim 1, wherein the check valve is a so-called "gill valve". Floating boom as described in paragraph 4. 6. After the floating boom is inflated, the air supply tube is filled with water, which allows the floating boom to The force chambers are closed so that even if a puncture occurs in one buoyancy chamber, air in all other buoyancy chambers will be removed. An air supply pipe is placed below the duct outlet so that it does not act to empty it. A method of using a floating boom according to claim 1.