JPS63242285A - Sea water curtain apparatus - 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 (Industrial Field of Application) This invention relates to the use of marine water used to promote and block the diffusion of gas leaked from ships, etc. into the sea, and to reduce radiant heat when flammable gas ignites. Regarding the device, it is designed to facilitate installation work at the leakage site.

(Conventional technology) When flammable gases such as liquefied natural gas (LNG) and liquefied petroleum gas (LPG) and toxic gases need to be transported on a large scale, ocean transportation by ship is often carried out. .

If a ship transporting such gas hangs from the ceiling and suffers a disaster such as a collision, there is a risk that the gas being transported will leak, and in the case of flammable gas, a wide range of areas may be If the concentration is high enough to cause an explosion or fire hazard, or if it is a toxic gas, there is a risk of deteriorating the surrounding environment and causing human damage, so some kind of countermeasure is required.

[The problem that the invention is trying to solve] In order to block the diffusion of such gases or promote their diffusion to the upper atmosphere, it is necessary to install in advance a device that forms water on land. Sometimes things are done.

However, in the case of ship disasters, the location of the occurrence is not fixed;
Moreover, since it is at sea, it is impossible to predict the occurrence of a disaster and to set up a fixed head on the sea in advance.

Additionally, if you try to create a water level on the sea to surround a facility that is at risk of gas leakage, as is the case on land, you will end up with a long device that is at least twice as long as the ship, and it will be difficult to reach the area where the disaster occurred. There are also many problems in terms of workability and economy in continuous shooting and installation.

In addition, when using a device that forms a certain length of water F5, the direction of gas outflow often changes due to changes in weather conditions such as the direction of the disaster site or the tide, so it must be able to handle this. .

Furthermore, it is often necessary to install a device to form and cover water while the gas is being diffused, and it is necessary to prevent it from becoming a source of ignition or other secondary disasters.

This invention was made in response to the problems of the prior art, and is capable of effectively blocking gas leakage at unspecified locations on the sea, promoting upward diffusion, and minimizing the danger area. t6tJ aims to provide a marine ice-melting device that is safe and easy to install, can respond to changes in the gas outflow direction, and is safe and easy to install.

[Means for solving problems]

In order to solve the above problems, the present invention has Wtt water 6 water bags 1.
A water level pipe equipped with a plurality of water boat nozzles is installed to supply pressurized water to form a water boat on a floating body with an explosion-proof structure jΔ that covers one (1) at the sea surface, and a pressurized water supply device that supplies pressurized water into the floating body. It is characterized by being equipped with a moving device that moves the floating body according to changes in gas flow.

[For production]

A water level pipe is installed on a floating body with an explosion-proof structure, and water 15 is formed by a fountain from a water curtain nozzle. Moving devices such as thrusters that move according to changes in gas flow are housed and mounted inside the floating body to prevent the occurrence of disasters such as fires, and to enable immediate formation of water levels simply by being towed to the site or self-propelled. This makes the installation process easier.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

The marine water ω device of the present invention is installed perpendicularly to the gas flow 3 at a certain distance downstream of the gas flow 3 leaking from the leakage part 2 of the ship 1, as shown schematically in FIG. For example, the length is 160 m and the height is 20 m + ¥1 m (7) Water 1 + 14 is formed corresponding to the width of the gas flow 3.

For this reason, for example, as shown in FIG.
It has a 11-inch diameter, and its upper part protrudes slightly above the sea surface so that it floats.

On the upper surface of this floating body 11, water g,
One pipe 12 is installed. A large number of water level nozzles 13 are attached to the water level pipe 12 at regular intervals, and a water level 4 of about 20 m in height is formed by spraying water upward.

Furthermore, a water pump 14 is mounted inside the floating body 11 as a pressurized water supply device for supplying pressurized water to the water curtain pipe 12, and is driven by a motor 15.
Power to 5 is supplied via cable 6 from support vessel 5 shown in FIG.

Furthermore, thrusters 16 are mounted on both ends of the floating body 11 as moving devices for moving the floating body 11, respectively.
By rotating the screw 17, which is driven around the horizontal axis, around the vertical axis together with the horizontal axis, it is possible to apply a propulsive force (q) in any direction.Similar to the water pump 14,
It is driven by power supplied from the support ship 5 via a cable 6.

In the marine water level device 10 configured in this way, when a disaster occurs on the ship 1, the ship 1 is towed by the support ship 5 and moved to the vicinity of the disaster site, and then the thruster 1G is driven by the power supplied via the cable 6. Then, it is moved and installed on the downstream side at a certain distance from the leakage part 2, and perpendicular to the wind direction.

After the water pipe 12 is thus set at a predetermined position, the water pump 14 is driven by the motor 15, and water is spouted from the water boat nozzle 13 via the water mortar pipe 12 to form the water level 4.

Then, the gas flow 3 is blocked from spreading horizontally to the leeward side by the water level 4, and its diffusion upward is promoted.
The danger of N emissions due to flammable gas is prevented, and
11 environment deterioration due to poison gas etc. will be prevented.

On the other hand, the direction of gas outflow may change due to tidal currents, wind direction, etc., but in this case, the thruster 16 mounted on the floating body 11 is adjusted by remote control from the support vessel 5, and the wind direction is adjusted at a certain distance on the leeward side. The position of the ship 1 and the position of the floating body 11 are detected by radar, a radio range finder, etc., and the wind direction is detected at the river direction S1, and the thruster 16 is adjusted based on these detection signals. It can also be automatically controlled.

In addition, with this marine water curtain device 10, a water curtain for disaster prevention can be easily formed by simply towing and installing the floating body 11, and since it has an explosion-proof structure, even if it is installed in flammable gas, there will be no ignition source. There is no danger of secondary disasters.

Next, another embodiment of the present invention will be described based on FIGS. 3 to 5.

In addition, this water supply h1 N 20 is kept (1) to facilitate storage,
Floating body with three-part structure to save space 21°22.
23, and form water P34 of a predetermined quality when arranged in a - row.

On each floating body 21, 22, 23 there is a water mouth nozzle 24.
A large number of water outlet pipes 25 are installed at regular intervals.

Furthermore, each of the floating bodies 21, 22, and 23 has an explosion-proof structure, and is equipped with one water pump 26 as a pressurized water supply device, which is connected to a water and vinegar pipe 25, respectively.

In addition, in the center of each 17th holiday 21st, 22nd, 23rd, there is a
．． A thruster 27 is mounted as a moving device for changing the position of the propeller 14, and the propulsion direction can be changed by rotating the screw 28 around a vertical axis.

The engine 29.30 is used to drive the water pump 26J3 and the thruster 27, and
It is equipped with a fuel tank and an air cylinder, so that the engine can be operated in a PL-proof sealed state.

In the marine water curtain device 20 configured as described above, during standby and towing, the total length is 173 mm with three floating bodies 21, 22, and 23 arranged side by side, as shown in the plan view in Fig. 4.
Make it. Then, in this state, it was towed to the vicinity of the disaster site, and the thrusters 27 of each floating body 21, 22, and 23 were
Then, the floating bodies are arranged in a line, and the floating bodies are expanded to the state shown in FIG.

Thereafter, the engine 29 that drives the water pump 26 is started, and pressurized water is supplied to the water port nozzle 24 through the water port pipe 25 to form a water curtain 4 having a height of, for example, about 20 m.

When the direction of the gas flow 3 changes, three floating bodies 21,
This can be done by remotely controlling the thrusters 27 of No. 22 and 23 or automatically controlling them using detection signals from position detection and wind direction detection.

According to this marine water curtain device 20, the two engines 29 and 30 that drive the water pump 26 and the thruster 27 are connected to the floating body 21.
．． 22 and 23, so the floating body 21
．． The underwater part of 22 and 23 is large, so the shaking of the floating body can be reduced, and the water outlet 4 can be installed in a stable state.

Also, depending on the size of the gas flow 3 from the leakage part 2 of the ship 1, it is not necessary to use three floating bodies 21, 22, 23, and the length of the water boat 4 can be changed depending on the scale of the disaster. This results in energy savings.

In each of the above embodiments, the floating body is towed to the disaster site and a moving device such as a thruster is used to adjust the installation position.
It is also possible to eliminate the need for towing by a support vessel.

In addition, the pressurized water supply device and the moving device are not limited to those explained in the above embodiments, and may be of other types, and when driven by electric eI, a battery or engine-driven generator 1 is installed in the floating body. It is also possible to eliminate the need for external power supply.

In general, the number of floating bodies in the offshore water jet device is not limited to one or three, but any number may be used.

〔Effect of the invention〕

According to the marine wood vinegar device of this invention, which has been specifically explained with an example of an actual ship, a water level pipe equipped with a nozzle for water f is installed on a floating body made of anti-NJM construction, and pressurized water is Since it is equipped with a supply device and a moving device, the underwater part of the floating body is larger and there is less shaking.
A stable water boat can be formed, which is effective in blocking gas flow and promoting diffusion.

In addition, the water h1 can be set up simply by moving the floating body, and it is easy to tow or self-propel, and the position of the water h1 can be changed using a moving device, and the direction of the gas flow can be changed. can also be handled.

Furthermore, since the floating body has an explosion-proof structure, the pressurized water supply V
It is safe because the operation of AT and mobile equipment does not affect the outside, preventing secondary disasters from occurring.

Therefore, in the event of a gas leak at an unspecified location on the sea, a water outlet of a certain length can be used to shut off the gas, promote upward diffusion, or block the heat caused by a fire, thereby minimizing the danger area. Can be done.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of the marine watercraft device of the present invention, in which Figure 1 is a perspective view of a schematic configuration, Figure 2 is a front view, and Figures 3 to 5 are According to another embodiment of the present invention, FIGS. 3 and 4 are a front view and a plan view in a standby state, and FIG. 5 is a plan view in an expanded state. 1... Ship, 2... Leakage part, 3... Gas flow, 4...
...Mizifune, 5.Support ship, 6.Cable, 10.
20...)#j 1 unit of water supply, 11.21.22.2
3...Floating body, 12゜25...Water level pipe, 13.2/1
．． Nozzle for water pump 5, 14°26...Water pump, 15.
・・Motor, 16.27・・Thruster, 17.28・
...screw, 29.30...engine.

Claims (1)

[Claims] A water curtain pipe equipped with multiple water curtain nozzles that supplies pressurized water to form a water curtain is installed on a floating body with an explosion-proof structure floating on the sea surface, and a pressurized water supply device that supplies pressurized water into the floating body and a gas A marine water curtain device characterized by being equipped with a moving device that moves according to changes in currents.