CN113895570B - Frame-type floating island with air bags, semi-submersible ship and semi-submersible ship control method - Google Patents
Frame-type floating island with air bags, semi-submersible ship and semi-submersible ship control method Download PDFInfo
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- CN113895570B CN113895570B CN202111084042.4A CN202111084042A CN113895570B CN 113895570 B CN113895570 B CN 113895570B CN 202111084042 A CN202111084042 A CN 202111084042A CN 113895570 B CN113895570 B CN 113895570B
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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
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
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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
- B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
- B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
- B63B43/10—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy
- B63B43/12—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy using inboard air containers or inboard floating members
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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
- B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
- B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
- B63B43/10—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy
- B63B43/12—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy using inboard air containers or inboard floating members
- B63B2043/126—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy using inboard air containers or inboard floating members pneumatic, e.g. inflatable on demand
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Abstract
The invention relates to the field of ship design and manufacture, in particular to a frame-type floating island with an air bag (5), which comprises a floating island frame (3) and the air bag (5) fixedly arranged on the floating island frame (3); the air bag (5) comprises a cutting sleeve type inflation and deflation pipe joint which is connected with an air source through an air pipe. The invention also relates to a semi-submersible ship, which comprises a main ship body, a large fixed buoyancy tank (2) and a frame-type floating island with air bags (5). The invention also relates to a lifting control method of the semi-submersible ship. The invention has the beneficial effects that: the semi-submersible ship can effectively solve the contradiction among the submergence depth, the whole gravity center of the semi-submersible ship and the windward side of the device, can effectively reduce the whole gravity center of the semi-submersible ship, greatly reduce the windward side of the floating island, effectively improve the maximum submergence depth of the semi-submersible ship, reduce the body weight and the construction cost of the semi-submersible ship, and increase the safety of ship operation.
Description
Technical Field
The invention relates to the field of ship design and manufacture, in particular to a semi-submersible ship, and particularly relates to a frame-type floating island with an air bag and a semi-submersible ship provided with the frame-type floating island.
Background
A semi-submersible ship, also called a semi-submersible mother ship, is a special engineering ship for transporting large structures on the sea. The main working process is as follows: firstly, submerging the semi-submersible ship to the required draft, floating the goods to be loaded above the main deck of the ship, then floating the goods upwards, simultaneously supporting the loaded goods, fixing the goods to be transported to the destination after the main deck goes out of water, then sinking the ship to the required depth again, and detaching the loaded goods and then floating the goods. In order to accomplish the above operation, a plurality of ballast tanks are usually provided in the hull, and both submergence and floatation during loading and unloading operations are accomplished by driving in and discharging ballast water.
When the existing semi-submersible ship is submerged during unloading operation, the tail part of the ship bottom needs to be seated on a seabed plane, and the cargo gravity is supported by using seabed reaction force, so that a diver needs to launch to check the condition of the ship bottom, and the requirement on the water depth is also met. The existing semi-submersible ship is technically improved, and a buoyancy tank, namely a floating island, is additionally arranged on a ship body, specifically, the left side and the right side of a bow part and a stern part of the ship body or two movable floating islands can be seen, so that the ship body can be stably submerged in a horizontal posture, and the floating state of the semi-submersible ship during cargo carrying is adjusted. At present, the floating island of the semi-submersible ship is in a box-type structure, and the structure has the following obvious defects: 1. the windward side is usually large, and obvious overturning moment caused by wind load can be generated; 2. the center of gravity of the floating island is high, and the overturning moment generated by inertia is large when the ship rolls. Both of the above disadvantages have a fundamental effect on the stability of the ship.
With the expansion of transportation and use scenes of the semi-submersible ship, the lower submergence depth cannot meet the requirements of part of actual work. The submergence depth of the most common semi-submersible ship at present is usually 5 to 30 meters. If a larger submergence depth is required, the volume of the floating island needs to be correspondingly increased to provide larger reserve buoyancy support, and because the floating island is basically and completely positioned above the waterline in a carrying state, the floating island with the overlarge volume has a considerable height which sometimes even can be as high as about 50 meters, at the moment, the defects of the conventional box-type floating island are amplified, and the overturning moment caused by wind load and swinging is easy to be a destructive factor of the stability of the floating island, and the working safety of the semi-submerged ship is seriously influenced through a simulation result.
In the middle of a prior art scheme, increase the quantity of chinampa in order to reduce the self height of every chinampa to solve the too high problem of focus, and utilize specific chinampa position to arrange, rationally optimize the frontal area. However, the method can reduce the actual effective use area of the semi-submersible ship deck, reduce the variety of cargo carrying types, and increase the moving difficulty of the floating island on the design of certain movable floating island ships.
It can be seen that in the prior art, in order to increase the submergence depth of the semi-submersible vessel, it is basically only possible to seek a balance in the longitudinal and transverse volumes of the floating island, the remaining solutions being limited, with the known technical drawbacks being essentially unavoidable.
Reference 1: history and prospect of development of semi-submerged ship
Reference 2: development prospect of large semi-submersible ship
Reference 3: ship shape characteristics of semi-submersible ship and development prospect thereof
Reference patent 1: china invention CN202110446320.X multifunctional autonomous semi-submerged ship
Reference patent 2: chinese utility model CN201520168567.X semi-submerged ship
Reference patent 3: china invention CN 201810016097.3' method for modifying buoyancy tanks of semi-submersible vessel
Disclosure of Invention
The object of the present invention is to provide a suitable and valuable improvement of the structure of a semi-submersible vessel in the prior art, in order to solve or facilitate the solution of several technical problems and technical contradictions existing in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the technical scheme 1: a frame-type floating island with air bags is characterized by comprising a floating island frame and air bags fixedly arranged on the floating island frame; the air bag comprises a clamping sleeve type inflation and deflation pipe joint, and the clamping sleeve type inflation and deflation pipe joint is connected with an air source through an air pipe.
The design concept of the invention is that the original rigid buoyancy cavity is changed into the flexible buoyancy cavity, namely the original steel plate three-dimensional structure is replaced by the air bag capable of being inflated and deflated, so that the frame-type floating island can change the form of the frame-type floating island under different conditions of the semi-submersible ship, and the factors of windward side, gravity center and the like bring variability influence.
The floating island framework has the function of providing space support for the air bags, so that the air bags can be reasonably arranged in a preset space range, and the position and the state of the air bags are kept stable under the conditions of buoyancy and water pressure. The air source is connected with the clamping sleeve type inflation and deflation pipe joint of the air bag through the air pipe, and the air source not only can inflate the air bag, but also can deflate the air bag according to different specific air source types. The number of the air bags is at least one, usually a plurality of air bags, a plurality of rows and/or a plurality of lines, the air bags are uniformly arranged on the same plane, and a square structure is also formed in a three-dimensional space.
When the semi-submersible ship is in normal navigation, the air bag can be selected to be completely deflated or further retracted so as to ensure that the frame-type floating island has the minimum windward surface, the minimum mass and the minimum gravity center; when the semi-submersible vessel is in the submergence stage, the air bag can be selected to be fully inflated, so that the actual function of providing buoyancy for the semi-submersible vessel is restored. In the design scheme, compared with a steel plate three-dimensional structure floating island, the frame-type floating island has lighter self-weight under the condition of equal width and height, so that the frame-type floating island can properly increase the self-height according to the designed deeper submergence depth of the semi-submersible ship, and still has an extremely small windward side and a lower integral gravity center of the semi-submersible ship under the condition.
The box-type base can provide a certain ballast tank to facilitate the overall heavy buoyancy balance of the frame-type floating island, reduce the structural working strength and make the adjustment of the floating state of the semi-submersible vessel easier.
The floating island framework is designed into the truss structure, so that the whole structure of the floating island framework is more stable, the displacement and the bending of the air bag can be limited while the floating island framework has few windward sides, and the restoring moment is provided for the air bag. Preferably, the truss-like structure is arranged symmetrically around the balloon. When the number of the airbags is plural, the restraining cord serves to restrain the relative positions of the plural airbags and to ensure that the individual airbags are restrained at the respective designated positions.
The effect of the fixed water balance board of gasbag lies in providing more effective space anchor point to the gasbag, and the gasbag can be stable fix on the chinampa frame with perpendicular form, and when the gasbag quantity was a plurality of, can effectively guarantee that each gasbag center section is in on the same horizontal plane. When the number of the air bag fixed water balance plates is two, the total number of rows of the air bags in the vertical direction is one row; when the number of the airbag fixed water balance plates is n, wherein n is larger than 2, and the total number of the rows of the airbags in the vertical direction is n-1, so that the height of each airbag can be effectively reduced, the water pressure degree of a single airbag is reduced, the overall inflation speed of the airbags is improved, and the control difficulty of the self space form of each airbag is reduced.
Since the two ends of the air bag usually have a tapered structure with a reduced opening, the provided buoyancy and restoring moment are gradually reduced as the sectional area is reduced. After the air bag tip clamping groove is designed, the end part of the air bag can be fixedly arranged in the groove position of the air bag tip clamping groove to make up the defects, so that the requirement of stability is met.
The purpose of this design lies in, provides the support environment that the degree of agreeing with is higher for the tip of gasbag to be more favorable to the effective maintenance of gasbag spatial position, have positive effect to the better airtight effect of gasbag tip structure simultaneously.
Because the air bag has flexible property, even under the condition that large air pressure exists in the air bag, the overlong air bag is easy to deform or collapse in the middle part. The purpose of arranging the air bag fixing sleeve plate is to further fix the space position of the air bag, particularly to reserve a connector in the middle of the air bag, so that the influence of the water flow effect of the underwater environment of the air bag is reduced, and the air bags are prevented from being extruded.
The technical scheme 8 is as follows: a semi-submersible ship, which is characterized by comprising a main ship body, a large fixed buoyancy tank and the frame-type floating island with the air bags as claimed in any one of claims 1 to 7; the main hull is composed of at least one ship body, at least one ballast tank is arranged in the ship body, the large fixed buoyancy tank is fixedly arranged on at least one ship body, and the frame-type floating island with the air bags is permanently, detachably or slidably fixedly arranged on at least one ship body.
The main hull can be of a single deck type or a spliced deck type, the spliced deck type is that the main hull comprises a plurality of ship main bodies, and the ship main bodies are connected in series or in parallel. The large fixed buoyancy tank can be arranged independently or can be built with the building on the ship into a whole. The possibility of position change of the frame-type floating island with the air bags can be different according to different connection modes between the frame-type floating island and the ship body. When the floating island is permanently fixed, the floating island can be connected by welding, and the frame-type floating island cannot freely move on the ship body; the detachable fixation enables the device to be manually arranged according to specific position requirements, and the detachable fixation is realized through bolt connection; the sliding fixed installation can be realized through the connection of the sliding clamping grooves, and the sliding fixed installation can be arranged in a sliding locking mode according to a set sliding track.
Technical scheme 9: a semi-submersible ship lifting control method is characterized by comprising a submergence stage and an upward floating stage;
wherein the dive phase comprises the steps of:
a. connecting a gas pipe to a ferrule type inflation/deflation pipe joint of the gas bag, and inflating the gas bag by using a gas source;
b. continuously inflating until the air pressure in the air bag reaches the rated air pressure, stopping inflating and sealing the air bag; wherein the rated air pressure is calculated by the formula P = (G x 9.8)/(N x pi R) 2 4)/1000, wherein P is the rated working pressure and has the unit of MPa; g is jacking weight, unit t; n is the number of the air bags and is a unit; r is the diameter of the pressure bearing face of a single air bag and is in the unit of m; pi is the circumference ratio;
c. continuously injecting ballast water into a ballast tank of the ship body, and gradually and slowly submerging the semi-submerged ship until the set submerging depth is reached, and ending the submerging stage;
the floating stage comprises the following steps:
d. continuously discharging ballast water in a ballast tank of the ship body, and gradually floating the semi-submerged ship upwards slowly until the set draft height is reached;
e. and (5) deflating the air bag until the air bag is emptied, and finishing the floating-up stage.
Technical means 10 obtained by optimizing technical means 9: the semi-submersible ship lifting control method is characterized by comprising a submerging stage and a floating stage;
wherein the dive phase comprises the steps of:
a. the two ends of the air bag are hermetically fixed on an air bag tip clamping groove corresponding to the air bag fixing horizontal truss plate, wherein a cutting sleeve type inflation and deflation pipe joint of the air bag is hermetically connected with a pore of the air bag fixing water balance plate and then connected with an air pipe to the pore, the air bag is inflated by using an air source, and the inflation is suspended when the appearance of the air bag reaches the nominal size; wherein the nominal size is the airbag cylinder unfolding size, and the diameter and the height are respectively usedRAndhrepresents, the unit m;
b. fixing at least one middle reserved interface of the airbag body to an adjacent truss structure and/or a limiting rope through a fixing piece (a primary-secondary interface such as a buckle or an anti-theft buckle);
c. restarting the air inflation action on the air bag until the air pressure in the air bag reaches the rated air pressure, stopping inflating and sealing the air bag;
d. continuously injecting ballast water into a ballast tank of the ship body, and gradually and slowly submerging the semi-submerged ship until the set submerging depth is reached, and ending the submerging stage;
the floating stage comprises the following steps:
e. continuously discharging ballast water in the ballast tank of the ship body, and gradually and slowly floating the semi-submersible ship until the set draft height is reached;
f. deflating the air bag until the air bag is emptied;
g. and (5) disassembling the fixing piece on the air bag, separating the air bag from all or the clamping grooves at the tip end of the upper air bag, and then recovering, and finishing the floating-up stage.
Compared with the prior art, the invention has the beneficial effects that:
the semi-submersible ship can effectively solve the contradiction among the submergence depth, the whole gravity center of the semi-submersible ship and the windward side of the device, can effectively reduce the whole gravity center of the semi-submersible ship, greatly reduce the windward side of the floating island, effectively improve the maximum submergence depth of the semi-submersible ship, reduce the body weight and the construction cost of the semi-submersible ship, and increase the safety of ship operation.
Drawings
FIG. 1 is a schematic side view of a semi-submersible vessel with an air bag framed floating island according to the present invention.
Fig. 2 is a side structural sectional view of the semi-submersible vessel of fig. 1.
FIG. 3 is a top structural cross-sectional view of the semi-submersible vessel of FIG. 1.
Fig. 4 is an enlarged structural schematic diagram of the floating island frame of fig. 3.
FIG. 5 is an enlarged structural solid view of the semi-submersible vessel airbag.
Wherein the reference numerals are:
1. a vessel body;
2. large fixed buoyancy tank
3. Floating island frame
4. Truss structure
5. Air bag
6. Box type base
7. Limiting rope
8. Air bag fixed horizontal truss plate
9. Air bag tip clamping groove
10. Conical groove body
11. The air bag is fixed with the sleeve plate.
Detailed Description
In order to enable a reader to better understand the design principle of the present invention, the following specific embodiments are provided so that the reader can visually understand the structure, structural composition, action principle and technical effect of the present invention. It should be noted that the following embodiments are not intended to limit the technical solutions of the present invention, and those skilled in the art can analyze and understand the embodiments and make a series of modifications and equivalent substitutions on the technical solutions provided by the present invention in combination with the prior knowledge, and the new technical solutions obtained by the modifications and equivalent substitutions are also included in the present invention.
Since the present invention cannot be exhaustive, some preferred features and preferred embodiments may be reasonably replaced or combined with each other, and thus the new embodiments are also encompassed by the present invention.
It should be understood that a series of modifications, equivalent substitutions, mashups of characteristic elements and the like made according to the provided embodiments after the reader reads the contents of the embodiments and understands the gist of the present invention are to be understood as being included in the spirit of the present invention.
For the reader to better understand the gist of the present invention, the most representative examples are specifically illustrated. The reader should have the ordinary skill in the art to read this disclosure in order to facilitate an accurate understanding of the logical relationships contained therein.
The reader should particularly note that the drawings corresponding to the specific embodiments exist in a form assisting understanding, and the reader can conveniently understand the abstract upper concept of the technical idea related to the invention by understanding the specific visualized lower concept. When the present invention is wholly understood and compared with other technical solutions except for the technical solution provided by the present invention, the representation of the attached drawings should not be taken as the only reference, and after understanding the concept of the present invention, a series of modifications, equivalent replacements, mashups of characteristic elements, deletion and rearrangement of unnecessary technical characteristic elements, reasonable addition and rearrangement of unnecessary technical characteristic elements common in the prior art and the like according to the attached drawings or without referring to the attached drawings should be understood to be included in the spirit of the present invention.
As the present invention is not exhaustive, the following should also be understood to be included within the spirit of the present invention:
1. the present invention is not limited to the above-described embodiments, but may be embodied in various forms without departing from the spirit or scope of the present invention.
2. The beneficial effects related to this embodiment point to the specific structural features in the illustrated embodiment, and the beneficial effects may be: the lower level encompassed by the spirit of the present invention; what is needed is a new one that can be derived from the specific structure of the subordinate claims. When the advantageous effects brought by the structure do not correspond or completely correspond to the above-mentioned advantageous effects mentioned in the embodiments or the advantageous effects clearly indicated by the gist of the present invention, the structure is included in the spirit of the present invention when the advantageous effects can be reasonably derived from the design concept and the gist of the present invention.
Example 1
Referring to fig. 1 to 5, this example illustrates the implementation method of the present invention by taking a 60m semi-submersible ship as an example. The project requires the maximum diving depth of 50m, and can launch missiles underwater besides conventional towing work. In this example, the boat body 1 has a length of 60m, a width of 35m, and a depth of 6m. The large fixed buoyancy tank 2 is 8m long and 5m wide. The floating island frame 3 of the frame-type floating island with the air bags 5 is 8m long and 6m wide, and 512 special high-pressure air bags with the diameter of 2m and the height of 15m are placed on each layer. When the semi-submersible ship is submerged, the pressure of the external seawater is applied, so that the pressure difference of the internal pressure is taken into consideration when the semi-submersible ship is inflated. Since the gas pressure inside the airbag 5 is uniform in the height direction, and the external water pressure decreases as the height increases, the length of the airbag 5 should not be too large, preferably not more than two times the circumferential perimeter of the airbag (2.5 × pi diameter =2.5 × 3.14 × 2 is approximately equal to 15 m), and when the height of the airbag 5 is 15m, the pressure difference between the upper and lower sides inside the airbag 5 can reach 0.15MPa at most, which exceeds the pressure bearing range of a standard high-pressure airbag 5, so that a customized high-pressure airbag 5 should be used to meet the design requirements without reducing the height of the airbag 5. According to the design requirement, the semi-submersible ship has 5% of reserve buoyancy in the submerged state. According to the displacement when 50m dives and the water surface area of the position, according to the buoyancy formula (F) Floating body =G Row board The calculation formula is as follows: f Floating body =ρ Liquid for treating urinary tract infection gV Row board In which F is Floating body Is the buoyancy, with the unit of N,rho liquid represents the density of the liquid in kg/m 3 (ii) a g =9.8N/kg, which may be 10N/kg in rough calculation; v Row board Denotes the volume of the discharged liquid in m 3 ) The required height of the upper part of the floating island is 6m, and the reserve buoyancy of 6.5m is reserved on the upper part of the floating island by considering certain design margin, so that the total height of the floating island is 50.5m, and the total height of the floating island is three layers. Wherein the main hull provides buoyancy for the semi-submersible vessel and carries deck cargo or provides various functions for the remaining vessels. The main hull comprises a hull body 1, wherein the hull body 1 mainly comprises a ballast tank and a pump tank, ballast water for submergence is provided, and a ballast pump, a ballast water pipe, a vent pipe, a personnel passage, a consumption pump and the like are provided with a ballast system. According to design requirements, the semi-submersible ship can submerge or float up by 1.5m per hour, and has 25% of margin, so that the required total pump displacement can be calculated to be 3937m 3 H is the ratio of the total weight of the catalyst to the total weight of the catalyst. According to the specification of the existing pump, 2 2200m pumps are selected 3 Ballast pump of/h or 5 ballast pumps 810m 3 A ballast pump of/h. Also, from these data, the sizes of the respective ballast main pipes, branch pipes of the respective ballast tanks, and the like can be calculated. The large fixed buoyancy tank 2 serves to accommodate the ballast system gas permeability tubes as they are above the chordal deck. The large fixed buoyancy tank 2 is also provided with a generator set related system for providing power for the semi-submersible ship, and the generator set related system comprises a main generator set, fuel oil, lubricating oil, a fuel pump, a lubricating oil pump, a fan, a switchboard, a transformer, a fire-fighting system and the like. The lower end of the floating island frame 3 is fixedly connected to a box-type base 6, and the box-type base 6 can provide a certain amount of ballast tanks. The overall heavy buoyancy of the frame-type floating island is ensured to be more easily balanced, the structural working strength is reduced, and the floating state of the semi-submersible ship is more easily adjusted. In order to stabilize the overall structure of the floating island frame 3, effectively limit the displacement and bending of the air bags 5, and provide a restoring moment for the air bags 5, in the embodiment, the floating island frame 3 is designed to be a truss structure 4, the air bags 5 are located within the enclosure of the truss structure 4, and the limiting ropes 7 are utilized to effectively partition the air bags 5 in the corresponding area range. The floating island frame 3 is a three-layer truss structure, each layer is composed of an upper air bag fixing horizontal truss plate 8 and a lower air bag fixing horizontal truss plate 8, and the design can be realizedThe height of a single air bag 5 is effectively reduced, so that the water pressure degree of the air bag 5 is reduced, the integral inflation speed of the air bag 5 is improved, the control difficulty of the self space form of each air bag 5 is reduced, and the manual arrangement difficulty is reduced; more preferably, the air bag fixed horizontal truss plate 8 with the interface reserved in the middle can move, and the air bag 5 falls down when the pressure of the air bag 5 is reduced along with the rising of the air bag 5. An air bag tip clamping groove 9 is fixedly arranged on the air bag fixing horizontal truss plate 8, and two ends of the air bag 5 are respectively and correspondingly fixed on the air bag tip clamping grooves 9 in the upper direction and the lower direction; a hole for communicating the air pipe is arranged on the clamping groove 9 at the tip end of the air bag; the pneumatic power station (positioned in the semi-submersible ship) is communicated with a cutting sleeve type inflation and deflation pipe joint which is connected with the hole in an airtight way through an air pipe. The end part of the air bag 5 is fixedly arranged in the groove position of the air bag tip clamping groove 9, so that the problem that the buoyancy and the restoring torque provided further can be gradually reduced along with the reduction of the sectional area because the two ends of the air bag 5 usually have a tapered structure with a reduced opening can be effectively solved, and the requirement on stability is met. Further, for the tip of gasbag 5 provides the support environment that the degree of agreeing with is higher to more be favorable to 5 spatial position's of gasbag effective maintenance, this embodiment provides the most advanced draw-in groove 9 of gasbag and has a taper groove body 10's design scheme, and the both ends position of gasbag 5 is the toper structure, and 5 both ends positions of gasbag that are the toper structure are fixed to be agreed with and are installed in taper groove body 10, so the design still can have positive effect to the better airtight effect of 5 tip constitutions of gasbag. In this embodiment, in order to make the airbag 5 with its own flexibility characteristic not to be easily deformed or collapsed in the middle, a plurality of airbag fixing straps 11 fixed on the floating island frame 3 are arranged between two adjacent airbag fixing horizontal truss plates 8, and the functions of fixing the airbag tip end clamping groove 9, supporting the truss structure, fixing the limiting rope 7 and connecting the air pipe can also be achieved.
Example 2
The embodiment introduces a lifting control method of a semi-submersible ship, which respectively comprises the steps of controlling the submerging action and the floating action of the semi-submersible ship;
submerging:
a. the two ends of the air bag 5 are hermetically fixed on an air bag tip clamping groove 9 corresponding to the air bag fixing horizontal truss plate 8, wherein a cutting sleeve type air charging and discharging pipe joint of the air bag 5 is hermetically connected with a hole of a fixing water balance plate of the air bag 5, then the air pipe is connected to the hole, the air bag 5 is charged by using an air source, and the air charging is suspended when the appearance of the air bag 5 reaches a nominal size;
b. fixing at least one middle reserved interface of the bag body of the air bag 5 to an adjacent truss structure and/or a limiting rope 7 through a fixing piece so as to ensure that the air bag 5 cannot slide in the height direction;
c. restarting the inflation action of the air bag 5 until the air pressure in the air bag 5 reaches the rated air pressure and the inflation pressure is 0.05 to 0.125MPa, stopping the inflation and sealing the air bag 5;
d. continuously injecting ballast water into the ballast tank of the ship body 1, gradually and slowly submerging the semi-submerged ship until the set submerging depth is reached, and ending the submerging stage;
floating:
e. continuously discharging ballast water in a ballast tank of the ship body 1, and gradually floating the semi-submerged ship upwards slowly until the set draft height is reached;
f. the air bag 5 is deflated until the air bag is emptied;
g. the fixing piece on the air bag 5 is manually disassembled, the air bag 5 is separated from all or the upper air bag tip clamping grooves 9, the air bag 5 is placed to the bottom by using an electric winch, the electric winch is installed inside a submarine, the electric winch is connected with the air bag in series through a hinge rope, and the air bag can be folded and unfolded by using a shutter series connection structure. To reduce the frontal area and end the floating up stage.
Note that the above embodiments are merely for sufficiently illustrating each structural component mentioned in the present invention, and do not constitute a specific limitation on the entire structural composition.
Claims (5)
1. A semi-submersible ship is characterized by comprising a main ship body, a large fixed buoyancy tank (2) and a frame type floating island with an air bag;
the main hull is composed of at least one ship body (1), at least one ballast tank is arranged in the ship body (1), the large fixed buoyancy tank (2) is fixedly installed on at least one ship body (1), and the frame-type floating island with the air bags (5) is permanently, detachably or slidably fixedly installed on at least one ship body (1);
the frame-type floating island with the air bags comprises a floating island frame (3) and the air bags (5) fixedly arranged on the floating island frame (3); the air bag (5) comprises a cutting sleeve type air charging and discharging pipe joint which is connected with an air source through an air pipe;
the maximum length of the air bag (5) is not more than two and five times of the circumferential perimeter of the air bag;
the floating island frame (3) comprises at least two air bag fixing horizontal truss plates (8); when the number of the air bag fixing horizontal truss plates (8) is two, the air bag fixing horizontal truss plates (8) are respectively arranged at the top and the bottom of the floating island frame (3); when the number of the air bag fixing horizontal truss plates (8) is more than two, the air bag fixing horizontal truss plates (8) are respectively arranged at the top, the bottom and the middle of the floating island frame (3); two ends of the air bag (5) are respectively fixed on two adjacent air bag fixing horizontal truss plates (8);
the floating island is characterized by further comprising a box-type base (6), wherein the floating island frame (3) is fixed above the box-type base (6);
the floating island framework (3) is of a truss structure (4), and the air bag (5) is positioned in the enclosure of the truss structure (4); a tensioned restraining rope (7) is arranged in the gap area between the air bag (5) and the adjacent truss-like structure (4);
at least one air bag fixing sleeve plate (11) is arranged between two adjacent air bag fixing horizontal truss plates (8), and the air bag fixing sleeve plate (11) is fixedly connected to the floating island frame (3).
2. Semi-submersible vessel according to claim 1, characterised in that an air bag tip slot (9) is fixedly mounted on the air bag fixing horizontal truss plate (8), and the two ends of the air bag (5) are respectively and correspondingly fixed on the air bag tip slot (9) in the up-down direction; a hole for the air pipe to be communicated or pass through is arranged on the clamping groove (9) at the tip end of the air bag; if the air pipe is communicated with the pore, the cutting sleeve type inflation and deflation pipe joint of the air bag (5) is in airtight connection with the pore; if the air pipe passes through the hole, the air pipe is directly connected with the cutting sleeve type charging and discharging pipe joint.
3. Semi-submersible vessel according to claim 2, characterized in that the air bag tip slot (9) is provided with a tapered slot (10), the two ends of the air bag (5) are of tapered structure, and the two ends of the air bag (5) of tapered structure are fixedly fitted in the tapered slot (10).
4. A method of controlling the heave of a semi-submersible vessel according to any of claims 1 to 3, comprising a submergence phase and a surfacing phase;
wherein the dive phase comprises the steps of:
connecting the air pipe to a cutting sleeve type inflation and deflation pipe joint of the air bag (5), and inflating the air bag (5) by using an air source;
continuously inflating until the air pressure in the air bag (5) reaches the rated air pressure, stopping inflating and sealing the air bag (5);
continuously injecting ballast water into a ballast tank of the ship body (1), and gradually and slowly submerging the semi-submerged ship until the set submerging depth is reached, and ending the submerging stage;
the floating stage comprises the following steps:
continuously discharging ballast water in a ballast tank of the ship body (1), and gradually and slowly floating the semi-submersible ship until the set draft height is reached;
and (5) deflating the air bag until the air bag is emptied, and finishing the floating-up stage.
5. The semi-submersible vessel lifting control method according to claim 4, comprising a submergence phase and an ascent phase;
wherein the dive phase comprises the steps of:
the two ends of the air bag (5) are hermetically fixed on air bag tip end clamping grooves (9) corresponding to the air bag fixing horizontal truss plates (8), wherein a clamping sleeve type air inflation and deflation pipe joint of the air bag (5) is hermetically connected with a hole of the air bag (5) fixing water balance plate, then an air pipe is connected to the hole, the air bag (5) is inflated by using an air source, and the air bag (5) is temporarily inflated when the appearance of the air bag (5) reaches a nominal size;
fixing at least one intermediate reserved interface of the air bag body of the air bag (5) to an adjacent truss structure and/or a limiting rope (7) through a fixing piece;
restarting the air inflation action of the air bag (5) until the air pressure in the air bag (5) reaches the rated air pressure, stopping the air inflation and sealing the air bag (5);
continuously injecting ballast water into a ballast tank of the ship body (1), and gradually and slowly submerging the semi-submerged ship until the set submerging depth is reached, and ending the submerging stage;
the floating stage comprises the following steps:
continuously discharging ballast water in a ballast tank of the ship body (1), and gradually floating the semi-submerged ship upwards slowly until the set draft height is reached;
the air bag (5) is deflated until the air is emptied;
and (3) disassembling the fixing piece on the air bag (5), separating the air bag (5) from all or the upper air bag tip clamping grooves (9), and then recovering, wherein the floating-up stage is finished.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111084042.4A CN113895570B (en) | 2021-09-16 | 2021-09-16 | Frame-type floating island with air bags, semi-submersible ship and semi-submersible ship control method |
| PCT/CN2021/135007 WO2023040062A1 (en) | 2021-09-16 | 2021-12-02 | Frame type floating island having air bag, semi-submerged ship, and semi-submerged ship control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111084042.4A CN113895570B (en) | 2021-09-16 | 2021-09-16 | Frame-type floating island with air bags, semi-submersible ship and semi-submersible ship control method |
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| Publication Number | Publication Date |
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| CN113895570A CN113895570A (en) | 2022-01-07 |
| CN113895570B true CN113895570B (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111084042.4A Active CN113895570B (en) | 2021-09-16 | 2021-09-16 | Frame-type floating island with air bags, semi-submersible ship and semi-submersible ship control method |
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| Country | Link |
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| CN (1) | CN113895570B (en) |
| WO (1) | WO2023040062A1 (en) |
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| CN116702476B (en) * | 2023-06-09 | 2023-12-22 | 中国人民解放军92493部队试验训练总体研究所 | Island bank target area simulation model verification method based on airbag type structure |
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|---|---|---|---|---|
| US3771484A (en) * | 1972-04-14 | 1973-11-13 | Us Navy | Inflatable floating island |
| CN201151470Y (en) * | 2008-01-15 | 2008-11-19 | 中国海洋石油总公司 | Semisubmersible drilling platform |
| RU2403168C1 (en) * | 2009-03-30 | 2010-11-10 | Открытое акционерное общество Конструкторское бюро по проектированию судов "Вымпел" | Pontoon-type floating vessel |
| SG193028A1 (en) * | 2012-02-07 | 2013-09-30 | Keppel Offshore & Marine Ltd | |
| CN104648624B (en) * | 2015-01-20 | 2017-01-25 | 上海海事大学 | Air bag girder type truss for large offshore platform |
| CN104608887B (en) * | 2015-01-20 | 2016-08-24 | 上海海事大学 | A kind of air bag filled type truss for Offshore Platform |
| CN106167078B (en) * | 2016-08-26 | 2018-09-18 | 山东南海气囊工程有限公司 | A kind of ship and drilling platforms floating aid system and construction method |
| CN206231586U (en) * | 2016-10-21 | 2017-06-09 | 武汉理工大学 | A kind of sea situation high and by isolation floating body |
| CN206243403U (en) * | 2016-12-13 | 2017-06-13 | 浙江海洋大学 | A kind of semi-submersible offshore platform of adjustable floating body damage inflow |
| CN109110082B (en) * | 2018-10-29 | 2024-03-26 | 浙江国际海运职业技术学院 | Floating dock capable of sinking and floating rapidly |
| CN109305308B (en) * | 2018-12-04 | 2019-12-27 | 大连理工大学 | Self-power-generation semi-submersible type ocean platform |
| CN109911132A (en) * | 2019-03-04 | 2019-06-21 | 武汉理工大学 | A kind of frame-type air bag buoyancy tank component and float structure |
| CN210391494U (en) * | 2019-08-02 | 2020-04-24 | 中国船舶工业集团公司第七0八研究所 | Semi-submersible transport ship type |
| CN111099736A (en) * | 2020-01-14 | 2020-05-05 | 薛海滨 | Artificial floating island with air bags and space net rack and preparation method thereof |
| CN111924050A (en) * | 2020-07-31 | 2020-11-13 | 陈杰 | Offshore floating type entertainment equipment |
| CN111874171B (en) * | 2020-07-31 | 2021-04-09 | 深圳埃吉尔海洋科技有限公司 | Modularized space truss structure semi-submersible type offshore floating platform |
| CN213008650U (en) * | 2020-08-17 | 2021-04-20 | 厦门天吴海洋科技有限公司 | Floating bag tool for improving submergence stability of semi-submerged transport ship |
| CN112810766A (en) * | 2020-12-31 | 2021-05-18 | 烟台中集来福士海洋工程有限公司 | Bottom-sitting type platform and self-floating and sinking-floating method thereof |
-
2021
- 2021-09-16 CN CN202111084042.4A patent/CN113895570B/en active Active
- 2021-12-02 WO PCT/CN2021/135007 patent/WO2023040062A1/en unknown
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| CN113895570A (en) | 2022-01-07 |
| WO2023040062A1 (en) | 2023-03-23 |
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