CN111907645B - Stranded cable system with auxiliary ship for implementing semi-submersible transport ship and unloading method thereof - Google Patents
Stranded cable system with auxiliary ship for implementing semi-submersible transport ship and unloading method thereof Download PDFInfo
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- CN111907645B CN111907645B CN202010830323.9A CN202010830323A CN111907645B CN 111907645 B CN111907645 B CN 111907645B CN 202010830323 A CN202010830323 A CN 202010830323A CN 111907645 B CN111907645 B CN 111907645B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/08—Arrangement of ship-based loading or unloading equipment for cargo or passengers of winches
Abstract
The invention relates to a mooring system with an auxiliary ship for implementing a semi-submersible transport ship and a discharging method thereof, wherein the mooring system comprises the semi-submersible transport ship, the auxiliary ship and a towing ship, the auxiliary ship and the towing ship are arranged opposite to the semi-submersible transport ship, mooring winches are arranged on the semi-submersible transport ship and the auxiliary ship, and a first mooring rope is wound on the mooring winch on the auxiliary ship; after the connection between the semi-submersible transport ship and the cargo body is completely cut off, the semi-submersible transport ship starts to submerge, and the cargo body is completely separated from the semi-submersible transport ship under the action of self buoyancy; a second cable of the cable winch on the semi-submersible transport ship starts to be wound and unwound, and the cargo body is slowly wound to the gunwale limit position of the semi-submersible transport ship; releasing a second cable of a cable winch on the semi-submersible transport ship, pulling the cargo body out of a safe area at a constant speed through a first cable on the auxiliary ship, and keeping the cable on the tugboat in a semi-tensioned auxiliary state; the method is beneficial to greatly improving the stability, safety and reliability of the method, and effectively reducing the risk of floating and unloading operation.
Description
Technical Field
The invention belongs to the field of ocean engineering, and particularly relates to a stranded cable system of a semi-submersible transport ship with an auxiliary ship and an unloading method thereof.
Background
At present, the unloading process of a semi-submersible transport ship is roughly divided into three steps, namely, the connection between the semi-submersible transport ship and goods is removed, and the semi-submersible transport ship is submerged to separate the goods from the ship; secondly, twisting the goods to the gunwale of the semi-submersible transport ship through a cross belt cable on the semi-submersible transport ship, wherein the gunwale is the limit position of the movement of the goods twisted by the cross belt cable; and the tug pulls the goods out of the semi-submersible transport ship to a safe area. The problems of easy influence of adverse environmental factors, poor limiting effect and slow control response in the unloading process of the existing semi-submersible transport ship
Disclosure of Invention
Technical problem to be solved
In order to solve the problems in the prior art, the invention provides a stranded cable system with an auxiliary ship implementation semi-submersible transport ship, which has strong resistance to external adverse factors and good limiting effect, and an unloading method thereof.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the utility model provides a take stranded cable system of supplementary ship implementation semi-submerged transport ship, includes semi-submerged transport ship, supplementary ship and tow boat all set up with semi-submerged transport ship relatively, all be equipped with the mooring winch on semi-submerged transport ship and the supplementary ship, around being equipped with first hawser on the mooring winch on the supplementary ship, be equipped with the goods body on the semi-submerged transport ship, the goods body is connected with semi-submerged transport ship through the second hawser, be equipped with the eye on the goods body, first hawser is connected with the eye, the tow boat is connected with the goods body through the third hawser.
A method for unloading a stranded cable system of a semi-submersible transport ship with an auxiliary ship comprises the following steps:
s1, completely cutting off the connection between the semi-submersible transport ship and the cargo body;
s2, the semi-submersible transport ship starts to submerge, and the cargo body is completely separated from the semi-submersible transport ship under the action of self buoyancy;
s3, winding and unwinding a second cable of the cable winch on the semi-submersible transport ship, and slowly winding the cargo body to the gunwale limit position of the semi-submersible transport ship;
s4, releasing a second cable of the cable winch on the semi-submersible transport ship, pulling the cargo body out of the safe area at a constant speed through the first cable on the auxiliary ship, wherein the cable on the tug boat is in a semi-tensioned auxiliary state in the process.
(III) advantageous effects
The invention has the beneficial effects that: by arranging the semi-submersible transport ship, the auxiliary ship and the towing ship, the mooring winch is arranged on the semi-submersible transport ship and the auxiliary ship, the first mooring rope is wound on the mooring winch on the auxiliary ship, the cargo body is connected with the semi-submersible transport ship through the second mooring rope, the towing ship is connected with the cargo body through the third mooring rope, after the connection between the semi-submersible transport ship and the cargo body is completely cut off, the semi-submersible transport ship starts to dive, the cargo body is completely separated from the semi-submersible transport ship under the self buoyancy effect, the second mooring rope of the mooring winch on the semi-submersible transport ship starts to be retracted, the cargo body is slowly stranded to the gunwale limit position of the semi-submersible transport ship, the second mooring rope of the mooring winch on the semi-submersible transport ship is released, the cargo body is pulled out of the safe area through the first mooring rope on the auxiliary ship at a constant speed, the towing ship is in a following state, and the auxiliary state that the mooring rope is semi-tensioned is favorable for greatly improving the self stability, The safety and the reliability effectively reduce the risk of floating and unloading operation.
Drawings
FIG. 1 is a flow chart of the steps of a method of unloading a mooring line system of a semi-submersible vessel with an auxiliary vessel according to the present invention;
FIG. 2 is a schematic structural view of a mooring system of a semi-submersible transport vessel with an auxiliary vessel according to the present invention;
FIG. 3 is a state view of the mooring system of the semi-submersible vessel with an auxiliary vessel according to the present invention;
FIG. 4 is a diagram of the discharge state of the mooring system of the semi-submersible vessel embodying the present invention with an auxiliary vessel;
FIG. 5 is a schematic structural view of a semi-submersible transport vessel with a mooring system for the auxiliary vessel implementing the semi-submersible transport vessel in accordance with the present invention;
FIG. 6 is a schematic structural view of an auxiliary vessel with a mooring system for the auxiliary vessel implementing a semi-submersible carrier according to the present invention;
FIG. 7 is a schematic structural view of a tugboat with a mooring system for an auxiliary vessel implementing a semi-submersible carrier according to the present invention;
fig. 8 is a schematic view of the construction of an eye of the mooring system of the semi-submersible vessel with an auxiliary vessel according to the invention.
[ description of reference ]
1: a second cable;
2: a first cable;
3: auxiliary on-board cable winches;
4: an auxiliary vessel;
5: a semi-submersible transport vessel;
6: a cargo body;
7: an eye ring;
8: towing the ship;
9: a boat anchor;
10: a third rope.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
The most key concept of the invention is as follows: the semi-submersible transport ship, the auxiliary ship and the tugboat are connected through the cables, and the unloading method of the stranded cable system of the semi-submersible transport ship implemented by the auxiliary ship is provided by utilizing the principle that the multiple ship bodies are limited mutually.
Referring to fig. 1 to 8, a mooring system with an auxiliary vessel for a semi-submersible carrier,
including semi-submerged transport ship, auxiliary ship and tow boat all set up with semi-submerged transport ship relatively, all be equipped with the mooring winch on semi-submerged transport ship and the auxiliary ship, on the mooring winch on the auxiliary ship around being equipped with first hawser, be equipped with the goods body on the semi-submerged transport ship, the goods body is connected with semi-submerged transport ship through the second hawser, be equipped with the eye ring on the goods body, first hawser is connected with the eye ring, the tow boat is connected with the goods body through the third hawser.
A method for unloading a stranded cable system of a semi-submersible transport ship with an auxiliary ship,
s1, completely cutting off the connection between the semi-submersible transport ship and the cargo body;
s2, the semi-submersible transport ship starts to submerge, and the cargo body is completely separated from the semi-submersible transport ship under the action of self buoyancy;
s3, winding and unwinding a second cable of the cable winch on the semi-submersible transport ship, and slowly winding the cargo body to the gunwale limit position of the semi-submersible transport ship;
s4, releasing a second cable of the cable winch on the semi-submersible transport ship, pulling the cargo body out of the safe area at a constant speed through the first cable on the auxiliary ship, wherein the cable on the tug boat is in a semi-tensioned auxiliary state in the process.
From the above description, the beneficial effects of the present invention are: by arranging the semi-submersible transport ship, the auxiliary ship and the towing ship, the mooring winch is arranged on the semi-submersible transport ship and the auxiliary ship, the first mooring rope is wound on the mooring winch on the auxiliary ship, the cargo body is connected with the semi-submersible transport ship through the second mooring rope, the towing ship is connected with the cargo body through the third mooring rope, the connection between the semi-submersible transport ship and the cargo body is completely cut off, the semi-submersible transport ship starts to dive, the cargo body is completely separated from the semi-submersible transport ship under the action of self buoyancy, the second mooring rope of the mooring winch on the semi-submersible transport ship starts to be retracted and extended, the cargo body is slowly stranded to the gunwale limit position of the semi-submersible transport ship, the second mooring rope of the mooring winch on the semi-submersible transport ship is released, the cargo body is pulled out of a safe area through the first mooring rope on the auxiliary ship at a constant speed, the ship is in a following state, the auxiliary state that the mooring rope is semi-tensioned is favorable for greatly improving the stability of the towing ship, The safety and the reliability effectively reduce the risk of floating and unloading operation.
Further, the second mooring rope is a cross-shaped mooring rope, and the cross-shaped mooring rope is arranged at two ends of the goods body.
From the above description, it can be known that the second cable is a cross belt cable, and the cross belt cable is arranged at two ends of the cargo body, so that the stability of the semi-submersible transport ship for fixing the cargo body is facilitated.
Further, ship anchors are arranged on the semi-submersible transport ship and the auxiliary ship.
From the above description, it can be known that by providing the boat anchors on both the semi-submersible transport boat and the auxiliary boat, it is advantageous to improve the stability of the semi-submersible transport boat and the auxiliary boat in maintaining their own positions.
Furthermore, a plurality of cable twisting machines are arranged on the auxiliary ship.
From the above description, it can be known that by providing a plurality of cable twisting machines on the auxiliary ship, the response speed and stability of the cable can be improved, and the stability and reliability of the cable can be improved.
Further, step S1 is specifically: and a second cable of the cable winch on the semi-submersible transport ship is wound and released through the cable winch to start to control the displacement of the cargo body, and the first cable and the third cable are in a relaxed state to assist the ship to be anchored and fixed at a proper position.
As can be seen from the above description, the step S1 is specifically: the second cable of the cable winch on the semi-submersible transport ship starts to control the displacement of the cargo body through the retraction of the cable winch, so that the cargo body is prevented from deviating; the first cable and the third cable are in a relaxed state, and the auxiliary ship is anchored and fixed at a proper position.
Further, step S2 is specifically: the second cable of the cable winch on the semi-submersible transport ship winches and controls the goods body, and the tugboat is in a following state.
As can be seen from the above description, the step S2 is specifically: the second cable of the cable winch on the semi-submersible transport ship winches and controls the goods body, and the tugboat is in a following state, so that the emergency problem can be solved.
Further, step S3 is specifically: in step S3, the second rope not only acts to twist the cargo body, but also controls the forward and backward displacement of the cargo body, and the first rope and the tug boat are both in the following state, and do not apply any pulling force or dragging force to the cargo body.
As can be seen from the above description, the step S3 is specifically: in the step S3, the second mooring rope not only needs to twist the goods body, but also needs to control the front and back displacement of the goods body, and meanwhile, the auxiliary ship mooring rope and the tugboat are both in the following state, so that no pulling force or dragging force is applied to the goods body, thereby being beneficial to further improving the safety of the goods body in the transportation process and avoiding the occurrence of accidents.
Further, step S4 is specifically: the tugboat is in an auxiliary effect, the mooring rope is in a semi-tensioned auxiliary state, and the third mooring rope between the tugboat and the cargo body is kept in a semi-tensioned state and is kept at a relative position with the cargo body as far as possible under the condition that the cargo body is not obviously deviated from the front and back.
As can be seen from the above description, the step S4 is specifically: the tugboat is in the additional action, and the half taut auxiliary state of hawser keeps the third hawser between tugboat and the goods body to be in half the state of straining under the circumstances that the goods body has not obvious skew around to the relative position with the goods body is kept as far as possible, is favorable to avoiding taking place accident.
Referring to fig. 1 to 8, a first embodiment of the present invention is:
the utility model provides a take auxiliary ship to implement stranded cable system of semi-submerged transport ship, includes semi-submerged transport ship 5, auxiliary ship 4 and towboat 8 all set up with semi-submerged transport ship 5 relatively, all be equipped with mooring winch 3 on semi-submerged transport ship 5 and the auxiliary ship 4, around being equipped with first hawser 2 on the mooring winch 3 on the auxiliary ship 4, be equipped with goods body 6 on the semi-submerged transport ship 5, goods body 6 is connected with semi-submerged transport ship 5 through second hawser 1, be equipped with eye ring 7 on the goods body 6, first hawser 2 is connected with eye ring 7, towboat 8 is connected with goods body 6 through third hawser 10.
The second mooring rope 1 is a cross mooring rope which is arranged at two ends of the cargo body 6, ship anchors 9 are arranged on the semi-submersible transport ship 5 and the auxiliary ship 4, and a plurality of cable twisting machines are arranged on the auxiliary ship 4.
A method for unloading a stranded cable system of a semi-submersible transport ship with an auxiliary ship comprises the following steps:
s1, completely cutting off the connection between the semi-submersible transport ship 5 and the cargo body 6;
s2, the semi-submersible transport ship 5 starts to submerge, and the cargo body 6 is completely separated from the semi-submersible transport ship 5 under the action of self buoyancy;
s3, winding and unwinding a second cable 1 of a cable winch on the semi-submersible transport ship 5, and slowly winding the cargo body 6 to the gunwale limit position of the semi-submersible transport ship 5;
s4, releasing a second cable of the cable winch on the semi-submersible transport ship, pulling the cargo body out of the safe area at a constant speed through the first cable on the auxiliary ship, wherein the cable on the tug boat is in a semi-tensioned auxiliary state in the process.
Step S1 specifically includes: the second cable 1 of the mooring winch on the semi-submersible transport ship 5 starts to control the displacement of the cargo body 6 through the retraction of the mooring winch, the first cable 2 and the third cable are in a relaxed state, the auxiliary ship 4 is anchored and fixed at a proper position, and the step S2 specifically comprises the following steps: the second cable 1 of the mooring winch on the semi-submersible transport ship 5 winches and controls the cargo body 6, the towing ship 8 is in a following state, and the step S3 is specifically as follows: in the process of step S3, the second rope not only needs to twist the cargo body, but also controls the front-back displacement of the cargo body, and the first rope 2 and the tugboat 8 are both in the following state, and no pulling force or dragging force is applied to the cargo body, and the step S4 specifically includes: the tugboat 8 is in an auxiliary effect, the third mooring rope 10 between the tugboat 8 and the cargo body 6 is kept in a semi-tensioning state under the condition that the cargo body 6 does not deviate from the front and back obviously, the third mooring rope and the cargo body 6 are kept at the relative positions with the cargo body 6 as far as possible, and the auxiliary boat 4 and the tugboat 8 are respectively arranged at the upper end and the lower end of the semi-submersible transport ship 5.
In summary, the mooring system with the auxiliary ship for implementing the semi-submersible transport ship and the unloading method thereof provided by the invention are characterized in that the semi-submersible transport ship, the auxiliary ship and the towing ship are arranged, the mooring winch on the semi-submersible transport ship and the auxiliary ship is respectively provided with the mooring winch, the mooring winch on the auxiliary ship is wound with the first mooring rope, the cargo body is connected with the semi-submersible transport ship through the second mooring rope, the towing ship is connected with the cargo body through the third mooring rope, after the connection between the semi-submersible transport ship and the cargo body is completely cut off, the semi-submersible transport ship starts to dive, the cargo body is completely separated from the semi-submersible transport ship under the self buoyancy effect, the second mooring rope of the mooring winch on the semi-submersible transport ship starts to be retracted, the cargo body is slowly stranded to the gunwale limit position of the semi-submersible transport ship, the second mooring rope of the semi-submersible transport ship is released, the cargo body is pulled out of the safe area at a constant speed through the first mooring rope on the auxiliary ship, in the meantime, the towing ship is in a following state, and the mooring rope is in a semi-tensioned auxiliary state, so that the stability, safety and reliability of the towing ship are greatly improved, and the risk of floating and unloading operation is effectively reduced.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (2)
1. A method for unloading a stranded cable system of a semi-submersible transport ship with an auxiliary ship is characterized in that, the mooring system comprises a semi-submersible transport ship, an auxiliary ship and a tugboat, wherein the auxiliary ship and the tugboat are arranged opposite to the semi-submersible transport ship, the semi-submersible transport ship and the auxiliary ship are both provided with cable winches, the cable winches on the auxiliary ship are wound with first cables, a cargo body is arranged on the semi-submersible transport ship and is connected with the semi-submersible transport ship through a second cable, the cargo body is provided with an eye ring, the first cable is connected with the eye ring, the tugboat is connected with the cargo body through a third cable, the second mooring ropes are cross belt ropes which are arranged at two ends of the cargo body, ship anchors are arranged on the semi-submersible transport ship and the auxiliary ship, and a plurality of cable stranding machines are arranged on the auxiliary ship;
the method for unloading the stranded cable system comprises the following steps:
s1, completely cutting off the connection between the semi-submersible transport ship and the cargo body;
s2, the semi-submersible transport ship starts to submerge, and the cargo body is completely separated from the semi-submersible transport ship under the action of self buoyancy;
s3, winding and unwinding a second cable of the cable winch on the semi-submersible transport ship, and slowly winding the cargo body to the gunwale limit position of the semi-submersible transport ship;
s4, releasing a second cable of the cable winch on the semi-submersible transport ship, pulling the cargo body out of a safe area at a constant speed through a first cable on the auxiliary ship, wherein the cable on the tug boat is in a semi-tensioned auxiliary state in the process;
step S1 specifically includes: a second cable of the cable winch on the semi-submersible transport ship starts to control the displacement of the cargo body through the retraction and release of the cable winch, and the first cable and the third cable are in a relaxed state to assist the ship to be anchored and fixed at a proper position;
step S2 specifically includes: a second cable of the cable winch on the semi-submersible transport ship winches and controls the cargo body, and the tugboat is in a following state;
step S3 specifically includes: in step S3, the second rope not only acts to twist the cargo body, but also controls the forward and backward displacement of the cargo body, and the first rope and the tug boat are both in the following state, and do not apply any pulling force or dragging force to the cargo body.
2. Method for unloading a mooring system of a semi-submersible vessel with an auxiliary vessel according to claim 1, characterized in that step S4 is embodied as: the tugboat is in an auxiliary effect, the cable is in a semi-tensioning auxiliary state, and under the condition that the cargo body is not obviously deviated from the front and back, the third cable between the tugboat and the cargo body is kept in a semi-tensioning state and is kept at a relative position with the cargo body as far as possible.
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| CN207060358U (en) * | 2017-05-22 | 2018-03-02 | 交通运输部上海打捞局 | Large Offshore Structures semi-submerged ship floats installing and applied |
| CN110254642A (en) * | 2019-05-11 | 2019-09-20 | 中国人民解放军91776部队 | The method that semi-submerged ship based on far-reaching extra large condition carries cargo |
| CN110406641A (en) * | 2019-08-05 | 2019-11-05 | 海洋石油工程股份有限公司 | The dry defeated floating dress technique of haul of floating production storage offloading |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1576163A (en) * | 2003-07-10 | 2005-02-09 | 多丽丝工程公司 | Floating terminal for loading/offloading ships such as methane tankers |
| CN204415672U (en) * | 2014-11-26 | 2015-06-24 | 宁波东方船舶设计院有限公司 | Self lighting type carrier |
| CN106545031A (en) * | 2016-12-06 | 2017-03-29 | 中交航局第二工程有限公司 | Self-propulsion type semi-submerged ship long-distance transportation Immersed tunnel technique |
| CN207060358U (en) * | 2017-05-22 | 2018-03-02 | 交通运输部上海打捞局 | Large Offshore Structures semi-submerged ship floats installing and applied |
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