JP5984764B2 - Ship handling equipment - Google Patents

Description

  In the present invention, a vessel or a slurry such as a natural gas hydrate is oscillated by a wave on the sea (a carrier) such as a natural gas hydrate between a land and a ship, between a floating island and a ship, or between ships. Even if it follows, it is related with the ship handling apparatus for ship delivery which can be delivered.

  For example, when a fluid such as liquefied natural gas (LNG) or oil is unloaded from a transport ship berthed on a pier to an on-shore storage tank, or vice versa, A ship-handling cargo handling device that can safely handle cargo while following it is used.

  For example, when handling (delivering) fluid between a land such as a pier and a ship such as a transport ship, not only does the ship constantly oscillate with waves, but the fluid is hot, cold or combustible. Because of the demand for temperature resistance and fire resistance, etc., simply passing with a rubber flexible hose is inferior in safety and operability, so it can follow swinging and has excellent temperature resistance and fire resistance. The cargo handling device for ship delivery is used in which the pipes are connected in a freely rotatable manner.

  This cargo handling apparatus for ship delivery is, for example, a loading arm as shown in, for example, Japanese Patent Publication No. 3-49839, and is generally configured as follows.

  For example, it is connected to a storage tank provided on one side of a delivery part such as a pier, wharf or floating island, and a ship delivery cargo handling device is provided, and the joint part at the tip of this ship delivery cargo handling device is connected to the other side of the delivery part. It is drawn and connected to a joint connecting part (manifold) connected to a storage tank provided in the ship, and the fluid is loaded and unloaded during this time. This ship-handling loading device (loading arm) is generally connected to the storage tank. It is provided on the riser pipe, and the upper end of the riser pipe is airtight in the horizontal and vertical directions via a horizontal hollow pivot joint (horizontal pivot swivel joint) and a vertical hollow pivot joint (vertical pivot swivel joint). An inboard arm is provided so as to be rotatable while maintaining a vertical hollow rotating joint (vertical rotating joint) at the tip of the inboard arm. An outboard arm is provided in a direction that passes through the swivel joint), that is, in an approaching / separating direction while maintaining an airtightness, and an outboard arm is rotatably provided. For example, the inboard arm is attached to the riser pipe as a configuration in which the joint is suspended via a joint having a dynamic joint (vertical swivel joint) and a horizontal hollow joint (horizontal swivel joint). The joint joint provided on the ship that touches the pier is connected to the inboard arm by rotating the outboard arm in the vertical direction and rotating the outboard arm in the contact and separation direction. Connected by approaching the manifold (manifold), arranging fluid from riser pipe to inboard arm and outboard arm Further via a joint portion through a connecting portion between the joint portion and the joint connecting portions are configured to be handling the storage tank of the ship.

  In addition, a vertical hollow rotary joint (top swivel joint), an elbow with the lower end facing downward, a horizontal hollow rotary joint (middle swivel joint), an emergency fluid shut-off and release device, and a tip horizontally A joint part with a detachable coupling mechanism (hydraulic coupler) is provided through a joint part in which an elbow directed in the direction, a vertical hollow pivot joint, and an elbow with the lower end directed downward are provided in order from above. The joint portion is configured to be rotatable in three different directions so as to be connected to the manifold.

  In addition, the loading arm is provided with a drive device for rotating the inboard arm or the outboard arm at the upper end of the riser pipe or the tip of the inboard arm, for example. Each of them is driven to turn the inboard arm, rotate the inboard arm, or open and close the outboard arm so that it is bent with respect to the inboard arm.

  Further, a balance adjusting mechanism is provided at the base end portion of the inboard arm to maintain a balance of the inboard arm by providing a balance weight. This balance adjustment mechanism may be provided not only when the balance weight is provided at the base end portion of the inboard arm, but also provided so that the balance weight can be moved and adjusted. For example, the outboard arm can be opened and closed as described above. In addition, a balance weight mounting arm that rotates in conjunction with the outboard arm when it is moved is provided, and a sub balance weight (variable weight) is provided on the balance weight mounting arm so that the outboard arm can be opened and closed. However, this subbalance weight also rotates together to automatically change the center of gravity position of the weight, so that the balance of the center of gravity of this subbalance weight is changed in this way according to the rotation posture of the outboard arm so that the balance is always maintained. It may be configured as follows.

  Further, each of the above-described drive devices that rotate the inboard arm and the outboard arm by a predetermined amount in a predetermined direction is a hydraulic drive device, and during the loading operation in which the joint portion and the joint connection portion are connected, By switching off the hydraulic drive of the drive unit and switching the circulation switching valve so that a pressure oil circulation conduit is formed, after connecting, it switches to the freewheel mode in this way, and each arm is free to balance In addition, the swivel joint can follow the vessel even if it is swung by an ocean wave, so that a load caused by the swing is not applied to the connecting portion between the joint portion and the joint connecting portion.

  As described above, the ship handling apparatus for handing over the ship is operated manually or by operating a drive device (for example, remote operation) in a situation where the joint is connected to connect the joint by shaking the ship due to waves at sea. Then, the joint connection part (manifold) that is swinging is moved closer, and the position is adjusted (moving fine adjustment), and the airtight connection is made by a detachable connection mechanism such as a bolt stop or a hydraulic coupler.

  On the other hand, it is hoped to develop a cargo handling equipment for ship delivery that handles unloading particles such as natural gas hydride, which has been attracting attention as a new energy source in recent years, between the ship side such as a transport ship and the land side such as a pier. Although it is rare, it generates flammable gas even though it is a granule, so it must still be handled with airtightness in order to avoid leakage of this flammable gas and scattering during transportation. Delivery with a hose is inferior in safety and operability.

Japanese Patent Publication No. 3-49839

  The present invention has improved a conventional loading arm for handling a flammable fluid to make the granule safer in developing a ship handling cargo handling device capable of handling the granule while maintaining such airtightness. An object of the present invention is to provide an epoch-making ship handling equipment for ship delivery that can be smoothly delivered and transported without fear of clogging, and that is excellent in operability.

  The gist of the present invention will be described with reference to the accompanying drawings.

An airtight horizontal swivel joint 9 and a vertical swivel swivel having a seal portion provided on a riser pipe 2 that is erected on one side of a delivery unit 1 that is always relatively moved by waves on the sea and that circulates a carrier. An inboard arm 3 that is pivotably connected while maintaining airtightness through a joint 10, and an airtight vertical swivel joint 11 that is provided with a seal at the tip of the inboard arm 3. An outboard arm 4 that is pivotably connected while maintaining airtightness, a joint portion 5 provided at the tip of the outboard arm 4, and a balance adjusting mechanism 7 that adjusts the balance of the inboard arm 3. The ship receiver is configured to move the joint part 5 on one side of the delivery part 1 and removably connect to the joint connection part 8 on the other side of the delivery part 1. A screw handling device 6 is provided in the riser pipe 2 for ascending and conveying the supplied conveyance body to the inboard arm 3, and is conveyed upward in the riser pipe 2 without leaking. A screw conveyor device 6 that further horizontally transports the transport body supplied to the inboard arm 3 is provided in the inboard arm 3, the transport body is transported from the riser pipe 2 to the inboard arm 3, and further the outboard arm 4, a ship handling apparatus for delivering a ship, which is configured to be conveyed by being dropped through 4 and guided to the joint portion 5.

Further, the opening of the distal end portion of the front Symbol outboard arm 4, the joint 12 between the joint portion 5 to dispose toward the discharge opening downward is provided, the joint portion 12, the inboard The swivel joint 13 for vertical rotation that is rotatable in the direction of rotation of the outboard arm 4 that rotates so as to change the bending angle with respect to the arm 3, and can be tilted in all directions with respect to the hanging direction. 2. The ship handling cargo handling apparatus according to claim 1, wherein the joint portion is provided with a ball joint that is swingable and tiltable.

  Further, the joint portion 12 has a lateral opening provided at the lower end portion of the outboard arm 4 or a lateral 90 degree elbow portion 15 that forms a lateral opening portion at the lower end portion, and the lower end opening portion is directed in the hanging direction. The hanging 90 degree elbow part 16 is connected to the vertical swivel swivel joint 13 through the ball joint 14 at the lower end opening of the hanging 90 degree elbow part 16 in the hanging direction. 5, and the joint portion 5 is configured to be rotatable in the rotation direction of the outboard arm 4 by the swivel joint 13 for vertical rotation and to be swingable and tiltable in all directions by the ball joint 14. The swivel joint 13 and the ball joint 14 are used as follow-up bent portions, and the joint portion 5 is arranged so as to hang downward. Those relating to ship transfer cargo handling apparatus of claim 2 wherein.

  Since the present invention is configured as described above, it is possible to load particles and slurry while maintaining airtightness, and in the same manner as a loading arm that loads conventional flammable fluid, the particles and slurry can be made safe. It becomes an epoch-making ship handling equipment for ship delivery that can be smoothly delivered and transported without clogging, and has excellent operability.

  Moreover, in invention of Claim 2, 3, it becomes the very excellent ship handling equipment for ship delivery from which the said effect | action and effect become further favorable.

It is a schematic explanatory front view of a present Example. It is a description front view of the supply pipe and riser pipe part of a present Example. It is explanatory side sectional drawing of the riser pipe part of a present Example. It is explanatory plane sectional drawing of the inboard arm part of a present Example. It is a description side view of the joint part and joint part of a present Example. It is explanatory side sectional drawing (enlarged view of FIG. 3) of this connection part which shows the structure which connected the riser pipe and inboard arm of a present Example rotatably with a swivel joint maintaining airtightness.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  Solid particles such as natural gas hydride between land structures such as piers and wharves or offshore structures such as offshore bases of gas fields and floating islands and ships such as transport ships and ships (including FPSO) When handling a carrier such as a body (including powder and small lumps), this device (ship handling device for ship delivery) is provided on one side of the delivery unit 1, for example, the land side or FPSO. The joint portion 5 at the front end portion (for example, the front end portion of the outboard arm 4 of the loading arm) is connected to the joint connection portion 8 (manifold) provided on the other side, that is, the upper part of the storage tank on the normal ship side, for example. The carrier (granule) is unloaded from the storage tank of the side or FPSO to the storage tank of the normal ship side. For ships and FPSO is swung by waves, the joint connecting portion 8 with respect to the joint portion 5 is constantly swings.

  In particular, when handling cargo between an offshore structure without a breakwater and a ship berthing on it, or between ships (including FPSO), the waves are high and swinging greatly.

  In such a situation, the joint portion 5 is moved closer to the joint connecting portion 8 to be aligned, and the flange portion between the joint portion 5 and the joint connecting portion 8 is bolted or connected by a detachable connecting mechanism such as a hydraulic coupler. It becomes.

  In the present invention, for example, each of the hydraulic drive units described above is driven (remote operation may be performed), for example, connected to the storage tank or supplied to the riser pipe 2 to which particles are supplied from the storage tank via the supply pipe 17 or the like. While turning the inboard arm 3 horizontally or pivoting in the vertical direction, the inboard arm 3 is further rotated in the direction of passing the outboard arm 4, that is, bent in the direction of approaching and moving away. The joint portion 5 provided at the front end portion of the board arm 4 via the joint portion 12 and the like is moved close to the joint connecting portion 8 that is relatively swung by the wave, aligned and connected, and after connecting, in each direction Each swivel joint serving as a rotating part is configured to follow and swing.

  The present invention is an improvement of such a loading arm. For example, each pipe is designed to have a large diameter and, for example, the supply pipe 17 is included in the riser pipe 2 and the inboard arm 3 or further in the outboard arm 4. Is provided with a screw conveyor device 6 for conveying particles.

  Therefore, the particles introduced and supplied to the inlet of the riser pipe 2 by, for example, the supply pipe 17 are spirally formed in the length direction of the central rotary shaft by the rotation of the screw conveyor device 6 provided in the riser pipe 2. Ascended and conveyed by the rotation of the provided screw fins and introduced into the inboard arm 3, and the particles are further conveyed horizontally in the inboard arm 3 by the rotation of the screw conveyor device 6 in the inboard arm 3. For example, the screw conveyor device 6 is not provided in the outboard arm 4, and the outboard arm 4 is connected to the inboard arm 3 in a hanging manner. The board arm 4 is dropped and conveyed by its own weight, and is guided to the joint portion 5 via the joint portion 12 at the lower end portion. The joint connecting part 8 connected to the joint part 5 is supplied to the storage tank at the end of the drop (supplied).

  At this time, in the present invention, the inboard arm 3 is pivotally connected to the riser pipe 2 via the swivel joints 9 and 10 provided with the seal portion, and the inboard arm 3 is connected via the swivel joint 11 provided with the seal portion. The outboard arm 4 is pivotally connected to the board arm 3 and is transported via the pipes and joints 12 by the screw conveyor device 6 while maintaining airtightness.

  Further, for example, a joint portion 12 is provided between the tip portion of the outboard arm 4 and the joint portion 5 disposed in the hanging direction, and the joint portion 12 is bent with respect to the inboard arm 3. The swivel joint 13 that can be rotated in the direction of rotation of the outboard arm 4 that rotates to change the angle, and the joint portion 5 can be tilted in a manner that it can be tilted in all directions with respect to the hanging direction. If the ball joint 14 that can be freely configured is provided, the joint portion 5 is suspended and the elbow bend portion is reduced to prevent clogging. Since it is swung in the direction, it is excellent in operability at the time of connection, and it becomes an excellent ship handling device for ship delivery that can sufficiently follow the wave swing.

  In the present embodiment, for example, the present apparatus is provided on the pier side, and the loading arm is improved in the joint connecting portion 8 (manifold) provided at the tip of the upper pipe communicating with the storage tank on the ship side such as a transport ship. In an embodiment of a ship handling cargo handling device that can connect the joint portion 5 directed directly below the emergency fluid shut-off / release device 18 and safely deliver a granular material such as natural gas hydrate. is there.

  That is, in this embodiment, a supply pipe 17 to which particles are fed and supplied from a storage tank on the pier side via a supply device or the like is provided horizontally, and a screw conveyor device 6 is provided in the supply pipe 17. The granular material is conveyed by the rotational drive of the screw conveyor device 6 and is introduced into the riser pipe 2 from the lower end introduction port of the riser pipe 2. The screw conveyor device 6 is also provided in the riser pipe 2. The particles are fed into the inboard arm 3 above the riser pipe 2 by the rotational drive of 6, and are conveyed out of the inboard arm 3 by the rotational drive of the screw conveyor device 6 also provided in the inboard arm 3. In this embodiment, the screw conveyor device 6 is not provided in the outboard arm 4 and the self-weight of the granule is not provided. The particles fallen and conveyed in the outboard arm 4 are dropped and conveyed to the joint part 5 and the joint connecting part 8 via the joint part 12 and the emergency fluid shut-off / release device 18, It is configured to discharge to a storage tank below the joint connecting portion 8.

  A screw conveyor device 6 may also be provided in the outboard arm 4 so that the outboard arm 4 can be conveyed further upward.

  Further, the screw conveyor device 6 provided in the riser pipe 2 and the inboard arm 3 of the present embodiment is provided with a helical screw fin on a rotating shaft that is arranged in the central length direction and is rotated by a rotation drive motor. It is set as the structure by which the granule in the meantime is conveyed in a spiral advancing direction by rotation of a screw fin.

  As described above, the rotary shaft rotated by the rotation drive motor and the screw fins for conveyance provided on the rotary shaft are internally provided in the pipe. In other words, for feeding or introducing into the outer cylinder of such a screw conveyor device 6. For example, a configuration may be adopted in which an opening for the above is provided and a swivel joint having airtightness is provided in the outer cylinder.

  That is, in the present embodiment, the inboard arm 3 is connected to the horizontal hollow rotary joint (horizontal) at the upper end portion of the riser pipe 2 (in other words, the outer cylinder of the screw conveyor device 6) into which the particles are fed from the supply pipe 17 in this way. This inboard is provided with airtightness in a horizontal (turning) direction and a vertical direction (falling direction) through a swivel joint (rotating swivel) 9 and a vertical hollow swivel joint (vertical swiveling joint) 10. Airtightness in the approaching / separating direction so that the bending angle can be varied with respect to the inboard arm 3 via a 90 ° elbow 19 and a vertical hollow swivel joint (vertical swivel joint) 11 at the tip of the arm 3. An outboard arm 4 is provided so that it can be opened and closed freely, and a swivel joint 13 for vertical rotation, elbow portions 15 and 16 for 90 degrees and a ball join are provided at the tip of the outboard arm 4. It has a configuration in which a joint portion 5 facing downward the coupling surface via a joint portion 12 made of a 14.

  These swivel joints 9, 10, 11 and 13 are provided with an insertion connection portion for inserting and fitting the upper conveyance side connection portion with respect to the conveyance lower side connection portion in the outer cylinder portion, and the rotation sliding portion of this connection portion is provided. Ball bearing 21 is provided. Seal member 22 (packing) is interposed inside the cylinder, and dust seal 23 (grease retainer ring) is interposed outside the cylinder. A swivel joint that can be used.

  Further, in this embodiment, a configuration in which a cylindrical lip 24 for suppressing intrusion of particles into the rotational sliding portion on the upper conveyance side is provided so as to be close to the inside of the connection portion on the lower conveyance side. It is said.

  The joint part 12 or the joint part 5 is provided with an emergency fluid shut-off / release device 18 or the joint part 5 is provided at the tip of the outboard arm 4 via the joint part 12 and the emergency fluid shut-off / release device 18. .

  Therefore, in the present embodiment, for example, the inboard arm 3 is bent with respect to the inboard arm 3 while being vertically pivoted and horizontally swiveled by the two swivel joints 9 and 10 with respect to the riser pipe 2. The outboard arm 4 provided so as to be rotatable by the swivel joint 11 in the direction of approaching and separating is opened and rotated, and the joint part such as the swivel joint 13, 90 degree elbow parts 15, 16, ball joint 14, etc. 12, the joint part 5 provided vertically downward is connected to the joint connection part 8 provided upward on the upper part of the storage tank 20 of the ship by being lowered and connected, and the granules are connected from the supply pipe 17 to the riser pipe 2 and further into the riser pipe 2. The joint on the other side passing through the board arm 3 and the outboard arm 4 and further connected to the joint part 5 via the joint part 12 and the like. It is configured to allow handling without leaking from the binding unit 8 to a storage tank of a ship.

  In addition, the inboard arm 3 having a counterweight 7A provided at the proximal end portion of the inboard arm 3 and the outboard arm 4 suspended from the distal end portion of the cargo handling device (loading arm) for ship delivery according to the present embodiment is provided. The balance adjustment mechanism 7 for maintaining balance with respect to the riser pipe 2 is provided.

  In this embodiment, the particles as the cargo are supplied to the riser pipe 2 from the lower end introduction port via the supply pipe 17 provided horizontally, and the screw is also provided in the supply pipe 17 as described above. A conveyor device 6 is provided, and the screw conveyor device 6 is configured to send and supply the granules to the base end portion (lower inlet) of the riser pipe 2, and thus the supplied granules and the outboard A screw conveyor device 6 that ascends and conveys to the arm 4 is provided in the riser pipe 2, and the screw conveyor device 6 that ascends and conveys the inside of the riser pipe 2 and further horizontally conveys the supplied particles is provided in the inboard arm 3. Also provided. As described above, the granule is dropped and conveyed from the inboard arm 3 through the outboard arm 4 and the joint portion 12 by its own weight, and is guided to the joint portion 5, the joint connecting portion 8, and the storage tank 20. It is configured to be.

  Further, in the present embodiment, a joint portion 12 is provided between the tip portion of the outboard arm 4 and the joint portion 5 in which the discharge opening portion is disposed downward, and the joint portion 12 is formed of the inboard arm 12. The swivel joint 13 for vertical rotation that can rotate in the direction of rotation of the outboard arm 4 that rotates so as to change the bending angle with respect to 3, and can be tilted in all directions with respect to the hanging direction. Thus, the joint portion 5 includes a ball joint 14 that can swing and tilt.

  Specifically, the joint portion 12 of the present embodiment includes a 90 ° elbow portion 15 for forming a lateral opening at the lower end portion of the outboard arm 4 and a hanging portion with the lower end opening portion being directed in the hanging direction. The 90 ° elbow 16 is connected to the vertical pivot swivel joint 13 and the ball joint 14 and the emergency fluid shutoff / release device 18 are connected to the lower end opening of the 90 ° elbow 16 for drooping. The joint portion 5 is connected via the swivel joint 13 so that the joint portion 5 can rotate in the rotational direction of the outboard arm 4 and the ball joint 14 can swing and tilt in all directions. In this configuration, the swivel joint 13 and the ball joint 14 are arranged so that the joint portion 5 is suspended as a follow-up bending portion that can be bent immediately before.

  In other words, in the present embodiment, the joint portion 5 can be disposed directly below through the two 90-degree elbow portions 15 and 16 and can rotate freely in the same direction as the rotation direction of the outboard arm 4. As a configuration in which the swivel joint 13 for vertical rotation is provided, a configuration in which no additional swivel joint is provided together with an elbow portion to be bent, and the like, a configuration in which the bent portion is minimized and the particles are not easily clogged. Further, instead of providing the vertical swivel joint 13 just before the joint portion 5 and not providing the swivel joint in the other direction, a ball joint 14 having a small tilt angle but flexible and freely tiltable is provided. It is configured so that it can be bent and rotated flexibly to improve the operability during connection and the rocking follow-up by waves.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Delivery part 2 Riser pipe 3 Inboard arm 4 Outboard arm 5 Joint part 6 Screw conveyor 7 Balance adjustment mechanism 8 Joint connection part 9 Horizontal swivel joint
10 Vertical swivel joint
11 Vertical swivel joint
12 Joint
13 Vertical swivel joint
14 Ball joint
15 90 degree elbow for sideways
16 90 degree elbow for drooping

Claims (3)

  An airtight swivel joint for horizontal rotation and a swivel joint for vertical rotation that have an airtightness and are provided with a seal portion on a riser pipe that is erected on one side of a transfer section that is always relatively moved by waves at sea An inboard arm that is pivotably connected while maintaining airtightness, and a rotating swivel joint that has a hermeticity and is equipped with a seal at the tip of the inboard arm. The joint part on one side of the delivery part, comprising a freely connected outboard arm, a joint part provided at the tip of the outboard arm, and a balance adjustment mechanism for adjusting the balance of the inboard arm A ship handling cargo handling device that is detachably connected to the joint connecting part on the other side of the delivery part, A screw conveyor device that ascends and conveys a fed carrier to the inboard arm is provided in the riser pipe, and a screw conveyor that further conveys the carrier that is fed up and conveyed without leaking in the riser pipe. A device is provided in the inboard arm, and the transport body is transported from the riser pipe to the inboard arm, further dropped and transported through the outboard arm, and guided to the joint portion. A cargo handling apparatus for ship delivery characterized by the above. The opening of the distal end of the prior SL outboard arms, a joint portion between the joint portion to dispose toward the discharge opening downward is provided, the joint portion is bent relative to the inboard arm The swivel joint for vertical rotation that can rotate in the rotation direction of the outboard arm that rotates to change the angle, and can tilt in all directions with respect to the hanging direction, and the joint part tilts and swings The cargo handling apparatus for ship delivery according to claim 1, wherein the ship joint is provided with a ball joint that can be freely moved.   The joint includes a lateral opening provided at the lower end of the outboard arm, or a horizontal 90 degree elbow that forms a lateral opening at the lower end, and a hanging 90 degree elbow with the lower end opening directed in the hanging direction. Are connected via the vertical pivot swivel joint, and the joint portion is connected via the ball joint to the lower end opening portion of the 90-degree elbow portion for hanging. The swivel joint for vertical rotation can be rotated in the rotation direction of the outboard arm, and the swivel can be swung in all directions by the ball joint. 3. A ship handling cargo handling device according to claim 2, wherein the joint portion is arranged so as to hang downward. Location.

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