JP2005254910A - Ship - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a secondary disaster in which a fire occurred on a deck is spread into a ship space. <P>SOLUTION: When a fire occurs on a deck 12 of a ship 10 for carrying an aircraft, sea water W is fed to an upper side of a waterproof packing 40 for a clearance A between the deck 12 and a platform 16 to prevent the waterproof packing 40 from being burned by the heat of the fire on the deck 12. Flow of the fuel on the deck 12 into a ship space 15 from the clearance A can be prevented, and the spread of the fire occurred on the deck 12 into the ship space 15 can be prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a ship provided with a lifting platform that moves up and down between a deck and a ship.

  Aircraft-operated ships and other ships that take off and land on the deck are equipped with a platform (lift platform) that moves up and down between the deck and the hangar in the ship. It can be taken down to (in the ship). For this reason, the maintenance of the aircraft can be performed on the ship.

  Here, there is a gap between the platform and the deck to raise and lower the platform. The gap is provided with a waterproof packing for preventing water from entering the ship through the gap. This waterproof packing is made of a rubber material that can be elastically deformed so as not to hinder the lifting and lowering of the platform.

  At present, the material of the waterproof packing is selected in consideration of weather resistance and wear resistance, but the heat resistance is low. For this reason, when a fire occurs due to fuel on the deck, the waterproof packing burns with the heat of the fire, fuel flows into the hangar from the gap between the deck and the platform, and the fire on the deck spreads into the ship There was a problem.

  Conventionally, a fire prevention method for a building fire has been devised for the purpose of preventing a secondary disaster in which a fire spreads from a floor where a fire has occurred to another floor via an elevator hoistway (see, for example, Patent Document 1). ). This Patent Document 1 discloses a method of closing a gap between a hoistway and an elevator during a fire by using a thermally expandable material that expands rapidly when heated to 200 ° C. or higher.

However, since this method is a fire prevention method for building fires that prevents the intrusion of smoke, it is not a technique for preventing the spread of waterproof packing.
JP 2003-306287 A

  The present invention has been made in consideration of the above facts, and the waterproof packing that prevents water from entering the ship through the gap between the elevator and the deck that has risen up to the deck is burned by the heat of the fire generated on the deck. The purpose is prevention.

  The ship according to claim 1 includes a lifting platform that moves up and down between the deck and the ship, closes a gap between the lifting platform and the deck that has risen up to the deck, and prevents water from entering the ship from the clearance. The ship is provided with a waterproof packing, and has a combustion preventing means for closing the gap on the upper side of the waterproof packing and preventing the waterproof packing from burning when a fire occurs on the deck. To do.

  In the ship according to the first aspect, since the elevator platform moves up and down between the deck and the ship, the aircraft can be lowered into the ship and maintained on the ship. There is a gap between the elevator that has been raised to the deck and the elevator opening on the deck so that the elevator can move up and down without interference, but this gap is waterproof around the elevator. The packing is closed by being pressed against the lifting platform, so that rainwater, seawater, etc. do not flow into the ship through this gap.

Here, when a fire occurs on the deck, the gap between the elevator platform and the deck that has risen up to the deck is blocked by the fire spread prevention means above the waterproof packing, and combustion of the waterproof packing is prevented. In other words, it is possible to prevent the fired fuel flowing on the deck from flowing into the gap between the elevator platform and the deck rising to the deck, burning the waterproof packing and entering the ship, and the fire on the deck burns into the ship. The secondary disaster which spreads can be prevented In addition, the ship of this invention includes both ships, such as warships, such as an aircraft operation ship, and merchant ships.

  The ship according to claim 2 is the ship according to claim 1, wherein the combustion preventing means is a liquid that is supplied above the waterproof packing in the gap when a fire occurs on the deck. It is a granular or powdery refractory agent.

  In the ship according to claim 2, when a fire occurs on the deck, a liquid, granular or powdery refractory agent such as water or quartz is raised between the lift and the deck and the waterproof packing. (Upper side of waterproof packing). This refractory prevents combustion of the waterproof packing due to the heat of the deck fire, and prevents inflow of fuel or the like from the deck into the ship.

  When the refractory agent is water, it may be evaporated by the heat of the fire, but combustion of the waterproof packing can be prevented by maintaining a supply amount equal to or greater than the evaporation amount.

  The ship according to claim 3 is the ship according to claim 2, wherein, when a fire occurs on the deck, a refractory supply means for supplying the refractory to the upper side of the waterproof packing in the gap. It is characterized by having.

  In the ship according to the third aspect, the refractory agent such as water or quartz is supplied between the waterproof packing and the gap between the elevator and the deck raised to the deck by a refractory supply means such as a pump. This prevents burning of the waterproof packing due to the heat of the deck fire. For this reason, the waterproof packing exhibits a waterproof function during the deck fire and after the deck fire has subsided.

  A ship according to a fourth aspect is the ship according to the third aspect, characterized in that the ship has a discharge means for discharging the stored matter stored above the waterproof packing in the gap.

  In the ship according to claim 4, rainwater, a fireproofing agent, or the like stored above the waterproof packing in the gap between the elevator and the deck raised to the deck is discharged from the gap by the discharge means. For this reason, when the fire has subsided, the storage on the waterproof packing can be immediately removed, and the storage does not enter the ship even if the elevator platform is lowered.

  The ship according to claim 5 is the ship according to claim 1, wherein the combustion preventing means is provided in the gap and expands due to heat of a fire generated on the deck to close the gap. It is an inflatable refractory member.

  In the ship according to claim 5, the thermally expandable fireproof member is provided in a gap between the elevator and the deck raised to the deck, and this thermally expandable fireproof member is caused by the heat of the fire when a fire occurs on the deck. Inflate to close the gap. This heat-expandable refractory member prevents combustion due to the heat of the deck fire of the waterproof packing. In addition, after the fire has subsided, it is only necessary to replace the thermally expandable refractory member, and a mechanism for supplying a refractory agent such as a water supply pipe becomes unnecessary.

  It should be noted that by arranging the thermally expandable fire-resistant member so as to block the gap between the elevator platform and the deck only after expansion when a fire occurs, the elevator platform is not hindered from moving up and down normally.

  The ship according to claim 6 is the ship according to claim 5, wherein the thermally expandable refractory member is a rubber material containing thermally expandable graphite.

  In the ship according to the sixth aspect, the rubber material containing thermally expandable graphite is provided in the gap between the elevator and the deck raised to the deck. Here, the thermally expandable graphite is obtained by subjecting scaly graphite to an intercalation compound treatment. However, when it receives heat, the intercalation compound expands and the scaly graphite is expanded. As a result, the rubber material expands to close the gap.

  Since the present invention is configured as described above, the waterproof packing that prevents water from entering the ship through the gap between the elevator and the deck that has risen up to the deck can be prevented from burning due to a fire generated on the deck.

  A first embodiment of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, an aircraft 14 can take off and land on a deck 12 of an aircraft operational ship 10 as a ship. The deck 12 is provided with platforms 16 (two in this embodiment) as lifting platforms that can be moved up and down to lower the aircraft 14 into the ship 15.

  As shown in FIGS. 2 and 3, the elevator 18 is a four-point hanging type, and four wire ropes 20A each having one end fixed to the fixtures 19A, 19B, 19C, and 19D at the four corners of the platform 16. , 20B, 20C, 20D are raised and lowered to raise and lower the platform 16.

  The elevator 18 includes a wire driving device 22. The wire driving device 22 includes an engine sheave 24 and a crosshead sheave 26 around which the wire ropes 20A to 20D are wound. The engine sheave 24 and the cross head sheave 26 are arranged along the longitudinal direction of the platform 16.

  The engine sheave 24 is rotatably supported by a support base 28 fixed in the vicinity of the fixture 19D. A support base 30 on which the crosshead sheave 26 is rotatably supported is fixed to a distal end portion of a telescopic hydraulic cylinder 32 extending from the vicinity of the engine sheave 24 in the longitudinal direction of the platform 16. That is, the cross head sheave 26 can be brought into contact with and separated from the engine sheave 24 by the hydraulic cylinder 32.

  From here, how to wind wire rope 20A-D is demonstrated. The longitudinal direction of the platform 16 is referred to as the longitudinal direction, and the short direction of the platform 16 is referred to as the short direction. First, the other ends of the wire ropes 20 </ b> A to 20 </ b> D are fixed between the engine sheave 24 and the crosshead sheave 26. The wire ropes 20 </ b> A to 20 </ b> D are wound around the engine sheave 24 after being wound around the crosshead sheave 26.

  The wire rope 20A is wound around a deflection sheave 34A suspended from the deck 12 above the fixing tool 19A until one end is fixed to the fixing tool 19A located in the vicinity of the cross head sheave 26. ing.

  Further, the wire rope 20B is wound around a deflection sheave 34B or the like suspended from the deck 12 above the fixture 19B until one end is fixed to the fixture 19B positioned in the short direction of the fixture 19A. It has been.

  Further, the wire rope 20C is wound around a deflection sheave 34C or the like suspended from the deck 12 above the fixture 19C until one end is fixed to the fixture 19C positioned in the longitudinal direction of the fixture 19B. ing.

  Further, the wire rope 20D is wound around a deflection sheave 34D or the like suspended from the deck 12 above the fixture 19D until one end is fixed to the fixture 19D positioned in the short direction of the fixture 19C. It has been.

  That is, when the hydraulic cylinder 32 extends and the crosshead sheave 26 moves from the position indicated by the solid line to the position indicated by the chain line, the wire ropes 20A to 20D are wound up and moved in the direction of arrow A in the figure, and the platform 16 is shown in FIG. The ascending position (the same height as the storage deck 36, see FIG. 4 (B)) indicated by the solid line rises to the ascending position (the same height as the deck 12; see FIG. 4 (A)).

  Here, as shown in FIG. 4 and FIG. 5, a gap A is provided between the platform 16 and the deck 12 that have risen up to the deck 12 so as not to prevent the platform 16 from moving up and down. A waterproof packing 40 that is closed over the entire circumference of the platform 16 is attached to the side wall 12 </ b> A of the deck 12. The waterproof packing 40 is an elastically deformable rubber material whose width is slightly longer than the width of the gap A, and is pressed against a packing pressing convex portion 41 provided on the side surface of the platform 16.

  As a result, rainwater, seawater, or the like that flows into the gap A from the deck 12 is blocked by the waterproof packing 40, and rainwater, seawater, or the like is prevented from flowing into the ship interior 15.

  Further, a water supply / drain port 42 is provided on the side wall 12 </ b> A of the deck 12. One end of a water supply pipe 44 and a drain pipe 46 is connected to the water supply / drain port 42. The other ends of the water supply pipe 44 and the drain pipe 46 extend into the sea. The water supply pipe 44 is provided with an open / close valve 52 and a pump 50, and the water distribution pipe 46 is provided with an open / close valve 48.

  As shown in FIG. 5A, the on-off valve 48 is normally opened, and the water blocked by the waterproof packing 40 passes through the drain pipe 46 without being stored on the waterproof packing 40. Drained into the sea. The on-off valve 52 is normally closed.

  As shown in FIG. 5B, when a fire occurs on the deck 12 due to a crash of the aircraft 14 on the deck 12, the on-off valve 52 is opened and the pump 50 is operated to Seawater W is supplied to the upper side of the waterproof packing 40 in the gap A. At this time, the on-off valve 48 is closed and the drain pipe 46 is closed.

  At this time, since the seawater W supplied to the gap A evaporates due to the heat of the fire, the water supply amount is maintained at or above the evaporation amount and the seawater W is always filled on the waterproof packing. Here, if the water supply amount is such that it overflows from the gap A to the deck 12, the fuel does not enter the gap A, which is effective.

  Thereby, while having high elasticity, it is possible to prevent combustion due to the heat of the deck fire of the waterproof packing 40 having low fire resistance. Therefore, the inflow of fired fuel from the deck 12 to the ship interior 15 can be prevented, and a secondary disaster in which the fire on the deck 12 spreads to the ship interior 15 can be prevented. In particular, the aircraft 14 and the aircraft are stored in the ship 15 (hangar), and the aircraft 14 and the aircraft may be filled with fuel. Further, the fuel may be vaporized and stay in the ship 15 and is dangerous. However, since the fuel does not flow into the ship 15, such a worry is not necessary.

  When the fire on the deck 12 subsides, the on-off valve 48 of the drain pipe 46 is opened, and the water stored in the gap A is drained. As a result, the platform 16 can be raised and lowered immediately after the fire is subsided.

  In this embodiment, the water supply pipe 44 is extended to the sea and the seawater W is supplied to the gap A. However, the water supply pipe 44 is extended to the tank and the liquid such as water and digestive fluid stored in the tank is supplied. You may make it supply to the clearance gap A. FIG.

  In the present embodiment, the seawater W is supplied to the gap A. However, in place of other liquid or granular refractory agents having high fire resistance, such as digestive juice, sand, quartz powder, and oxide powder. Also good.

  Next, a second embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment, and description is abbreviate | omitted.

  As shown in FIG. 6, a fire spread prevention packing 60 is attached to the upper side of the waterproof packing 40 on the side wall 12 </ b> A of the deck 12 over the entire circumference. Since this fire spread prevention packing 60 is not given as much elasticity as the waterproof packing, a gap is provided between the fire spread prevention packing 60 and the side wall 16A of the platform 16, as shown in FIG. . That is, the fire spread prevention packing 60 does not normally close the gap A and does not function as a waterproof packing.

  Here, the fire spread prevention packing 60 is a rubber material containing thermally expandable graphite. This thermally expandable graphite is obtained by subjecting scaly graphite, which is a mineral containing carbon as a main component, to an intercalation compound treatment. When heat is applied, the intercalation compound expands and expands the scaly graphite. Accordingly, the fire spread prevention packing 60 expands when heated to a predetermined temperature or higher, but in this embodiment, expands to about 10 times the volume when heated for about 5 to 10 minutes with heat of 250 ° C. to 300 ° C. .

  Accordingly, as shown in FIG. 6B, when a fire occurs on the deck 12, the fire spread prevention packing 60 expands due to the heat of the fire and closes the gap A on the upper side of the waterproof packing 40. Here, since the fire spread prevention packing 60 has high fire resistance and heat insulation, the heat of the fire generated on the deck 12 is insulated by the fire spread prevention packing 60 and the waterproof packing 40 is prevented from burning. Therefore, it is possible to prevent the burned fuel flowing on the deck 12 from flowing into the ship 15 from the gap A, and to prevent a secondary disaster in which the fire on the deck 12 spreads to the ship 15. In addition, since the waterproof packing 40 can be prevented from burning, seawater, rainwater, and the like can be prevented from flowing into the ship interior 15 from the gap A when a fire occurs.

  In the present embodiment, the present invention has been described by taking an aircraft operational ship as an example. However, the present invention is also applied to a general ship such as a merchant ship having a lifting platform that moves up and down between a deck and a ship (inboard). Is possible.

It is a perspective view which shows the aircraft operation ship of 1st Embodiment. It is a perspective view which shows the elevator of the platform of the aircraft operation ship of 1st Embodiment. It is a perspective view which shows the elevator of the platform of the aircraft operation ship of 1st Embodiment. (A), (B) is sectional drawing which shows the raising / lowering state of the platform of the aircraft operation ship of 1st Embodiment. (A), (B) is sectional drawing which shows the structure which obstruct | occludes the clearance gap between the deck and platform of the aircraft operation ship of 1st Embodiment. (A), (B) is sectional drawing which shows the structure which obstruct | occludes the clearance gap between the deck and platform of the aircraft operation ship of 2nd Embodiment.

Explanation of symbols

10 Aircraft Operation Ship (Ship)
12 Deck 15 Inboard (inboard)
16 platform
40 Waterproof packing 44 Water supply pipe (refractory supply means)
46 Drain pipe (discharge means)
48 On-off valve (discharge means)
50 pump (refractory agent supply means)
52 On-off valve (refractory agent supply means)
60 Fire spread prevention packing (combustion prevention means, thermally expandable refractory material, rubber material)
A Clearance W Seawater (combustion prevention means, refractory)

Claims (6)

A ship equipped with a lifting / lowering platform that moves up and down between the deck and the ship, provided with a waterproof packing that closes the gap between the lifting platform and the deck that has risen up to the deck and prevents water from entering the ship through the clearance. There,
A ship having combustion preventing means for closing the gap on the upper side of the waterproof packing and preventing the waterproof packing from burning when a fire occurs on the deck. The combustion preventing means,
The ship according to claim 1, which is a liquid, granular, or powdery refractory agent that is supplied above the waterproof packing in the gap when a fire occurs on the deck.   The ship according to claim 2, further comprising a refractory agent supplying means for supplying the refractory to the upper side of the waterproof packing in the gap when a fire occurs on the deck.   The ship according to claim 3, further comprising discharge means for discharging stored matter stored above the waterproof packing in the gap. The combustion preventing means,
The ship according to claim 1, wherein the ship is a thermally expandable fire-resistant member that is provided in the gap and expands by heat of a fire generated on the deck to close the gap.   The ship according to claim 5, wherein the thermally expandable fireproof member is a rubber material containing thermally expandable graphite.

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