Meanwhile, in the case where such a damping device is not used, that is, the damping device maintains an opened state, a worker has climbed down a ladder to reach a storage position and then locks the opened state of the damping device by turning a locking lever. As described above, since the locking and unlocking operation of the conventional damping device is carried out by a worker's action that manually locks and unlocks the opened state of the damping device, a worker is in danger of falling and the locking and unlocking operation is very inconvenient.
An aspect of the present invention is directed to a locking apparatus for a damping device of a moonpool, which can automatically lock and unlock an opened state of a damping device of a moonpool. According to an embodiment of the present invention, a locking apparatus for a damping device of a moonpool, which automatically locks and unlocks one or more damping devices opening and closing the moonpool in an opened state, includes: one or more first locking members installed in a sidewall of the moonpool; one or more second locking members installed in a side of the damping device; and a holding unit separably holding the first locking members and the second locking members when the damping devices are in the opened state.
The first locking member may have one or more first locking holes, and the second locking member may have one or more second locking holes. The first locking member may be installed in a sidewall of the moonpool adjacent to an end of the damping device when the damping device is in the opened state, the second locking member may be installed at the end of the damping device, and the first locking member and the second locking member may be disposed not to be interfered with each other when the damping device is in the opened state.
The holding unit may include: a driving cylinder disposed on the first locking member; and a holding shaft installed to be vertically movable by the driving cylinder, such that the holding shaft moves vertically and is inserted into or released from the first and second locking holes when the first locking hole of the first locking member and the second holding hole of the second holding member are matched with each other, whereby the holding unit separably holds the first locking member and the second locking member.
The locking apparatus may further include one or more guide members above the first locking member, wherein the guide members have guide holes. The locking apparatus may further include a pair of regulation plates on left and right sides of the holding shaft. According to another embodiment, a locking apparatus for a damping device of a moonpool, which automatically locks and unlocks one or more damping devices opening and closing the moonpool, is characterized in that, when the damping device is in an opened state, the damping device is automatically unlockably held at a storage position of the moonpool.
Understanding the Moon Pool (or, How Does the JR Keep From Sinking?)
Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Throughout the disclosure, like reference numerals refer to like parts throughout the various figures and embodiments of the present invention. As illustrated in FIG. To open and close the moonpool, a pair of damping devices may be installed as illustrated in FIG.
furniture. fitout. project management
In either case, the opening and closing operation of the damping device may be carried out in a front and rear direction or a left and right direction of a hull. The locking apparatus for the damping device of the moonpool according to the embodiment of the present invention includes one or more first locking members 11 installed in a sidewall of the moonpool, one or more second locking members 12 installed in a side of the damping device 2 , and a holding unit 20 unlockably holding the first locking members 11 and the second locking members 12 when the damping devices 2 are in the opened state.
The first locking member 11 is installed in a sidewall of the moonpool. The first locking member 11 has a first locking hole 11 a. The second locking member 12 is installed in a side of the damping device 2. The second locking member 12 has a second locking hole 12 a. According to one embodiment, the first locking member 11 is installed in a sidewall of the moonpool adjacent to the end of the damping device 2 when the damping device 2 is in an opened state, and the second locking member 12 is installed in the end of the damping device 2. As illustrated in FIGS. Meanwhile, FIGS.
Due to such a structure, the second locking member 12 of the damping device 2 is positioned such that it is inserted between the first locking members 11 of the moonpool when the damping device 2 is opened. In this case, the first and second locking holes 11 a and 12 a may be arranged in a straight line. In this embodiment, the state in which the damping device 2 is opened refers to a state in which the damping device 2 is rotated to the sidewall of the moonpool. This means that the damping device 2 is located at a storage position of the moonpool in order not to use the damping device 2.
The holding unit 20 is configured to separably hold the first and second locking members 11 and 12 such that the opened state of the damping device 2 is unlockably locked. The holding unit 20 according to one embodiment of the present invention includes a driving cylinder 21 which is installed at an upper portion of the first locking member 11 , and a holding shaft 22 which is vertically movable by the driving cylinder The driving cylinder 21 is installed in a sidewall of the moonpool.
One end of the driving cylinder 21 may be pivotally hinged to the sidewall of the moonpool.
For the water to enter a cavity already filled with another fluid, it has to either displace or compress this fluid. The shape of the container prevents the air from escaping and the water can't rush in if the air inside is at the same pressure as the water outside, because then the net force on the interface is zero. Air pressure is what holds back the water. If the air pressure is higher than the water pressure the water cannot enter.
Typically it will just be a pressurized chamber - not the whole sub. As someone else has said, the air pressure is what prevents the water from entering the submarine. But let's do some calculations. We will assume that the robustness of the hull is not a problem, i. The pressure outside water pressure can be computed from the hydrostatic equation :.
Therefore we obtain.
Moon Pool Winches |
You can see that very soon the room will be completely filled with water. In order to prevent this, it must be pressurized, and this requires the use of an airlock. But even like this, the pressure in the chamber cannot be increased too much, otherwise those who enter will risk oxygen intoxication. A submarine with a hole in it will be filled in water well before the hull collapses see above discussion.
Water'd fly out of your cup if there wasn't atmospheric air pressure on it. That's actually how straws work; we create a gentle vacuum with our mouths and the water flow upwards!
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