CN212890811U - Novel ore carrier for transporting light ore sand - Google Patents

Novel ore carrier for transporting light ore sand Download PDF

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CN212890811U
CN212890811U CN202021833118.XU CN202021833118U CN212890811U CN 212890811 U CN212890811 U CN 212890811U CN 202021833118 U CN202021833118 U CN 202021833118U CN 212890811 U CN212890811 U CN 212890811U
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ship body
bow
ore
bulkhead
cargo hold
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周旭
莫中华
郑金伟
何金伟
陆明锋
周兰喜
刘灿波
王同山
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Nantong Cosco KHI Ship Engineering Co Ltd
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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 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/04—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods solid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B11/00—Interior subdivision of hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B11/00—Interior subdivision of hulls
    • B63B11/02—Arrangement of bulkheads, e.g. defining cargo spaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Ship Loading And Unloading (AREA)

Abstract

The utility model discloses a novel ore deposit sand ship of transportation light ore sand contains bow cargo hold and a plurality of cargo hold, and the bilateral symmetry of bow cargo hold is provided with bow side ballast tank, and bow side ballast tank comprises bow cargo hold inner shell, crashproof bulkhead, rear side bulkhead and hull shell, and bow cargo hold inner shell sets up the breakpoint, and the breakpoint is b to the distance between the hull shellmAnd 1.8m is less than or equal to bm≤b0Wherein b is0The minimum theoretical value of the width of the double shells of the traditional ore carrier is that the thicknesses of the anti-collision bulkhead and the rear lateral bulkhead are thickened or a reinforcing plate is arranged. The utility model discloses increased the capacity of middle cargo hold, obviously reduced the well moment of flexure and the ship swelling deformation of hanging down, improved boats and ships and showy attitude, promoted the propulsion performance of boats and ships.

Description

Novel ore carrier for transporting light ore sand
Technical Field
The utility model relates to a novel ore deposit ship, especially a novel ore deposit ship of transportation light ore deposit belongs to the boats and ships field.
Background
China, as a large country where bauxite is imported, will have nearly hundred million tons of high quality bauxite arriving at China by shipping every year. The transportation enterprises mainly adopt bulk carriers to undertake related transportation tasks of the bauxite. At present, the maximum load capacity of bauxite carrying bulk cargo ships on the market is about 21 million tons. Bauxite is used as bulk cargo, and the larger the tonnage of a shipper is, the better the economy is. But no mature bulk carrier ship type design with over 21 million tons exists in the market. The ore carrier is a bulk cargo carrier with more than 21 ten thousand tons, and the maximum load capacity is 40 ten thousand tons. Because the ore sand carrier has poor suitability relative to bauxite, no case of carrying the bauxite by using a large ore sand carrier exists at present.
The main problems of carrying bauxite by adopting the traditional ore carrier are as follows: the density of the bauxite produced in Guinea is far less than that of the iron ore sand; the density of the iron ore sand is about 2.8-2.9t/m3, the average density of the Guinea bauxite is about 1.5t/m3, and the cargo hold capacity of the traditional ore sand ship designed according to the density of the ore sand cannot meet the requirement of the cargo hold capacity loaded by the bauxite. If a sand ore carrier is used to transport bauxite, the cargo hold capacity of the sand ore carrier must be increased.
The method is limited to the structural form of the ore carrier cargo hold, and the feasible ways for increasing the cargo hold capacity are as follows: firstly, the main dimension of the ship, such as the size of the model depth and the like, is increased; and secondly, on the basis of keeping the main dimension of the ore sand ship at the same level unchanged, the width of the double shells of the cargo hold is reduced. However, both methods have certain disadvantages: with respect to the first way of increasing the hold capacity of the cargo hold, an increase in the main scale means an increase in construction costs and a deterioration in economy; for the second way of increasing the hold capacity of the hold, the double hull width B allowed by a conventional ore carrier must be greater than min. (B/5,11.5m), meaning that an unlimited reduction of the double hull width B is not possible. According to the calculation, for example, a ore carrier with a load capacity of 31 ten thousand and a width of about 60m is taken, even if the minimum value of the double-shell width of the traditional ore carrier is 11.5 m-min (B/5-12 m,11.5m), the capacity of the cargo hold at the moment still hardly meets the capacity requirement of the cargo hold for carrying bauxite.
In addition, homogeneous loading is a typical operational loading condition for a sand vessel. When the mine sand carrier is fully loaded, the middle vertical bending moment is large, the swelling deformation is large, and the mine sand carrier has a big defect (the design of 40 ten thousand mine sand carriers exists, and the cargo hold hatch cover cannot be closed due to the swelling deformation of the mine sand carrier). On the premise of keeping the main size of the ore carrier unchanged, a novel ore carrier with the same tonnage, larger cargo hold capacity and smaller sagging moment and swelling deformation becomes the largest technical difficulty of overcoming the requirement of carrying bauxite by the ore carrier.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a novel ore deposit ship of transportation light ore deposit is provided, increase cargo hold capacity.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
transportDefeated novel ore deposit ship of light ore deposit contains bow cargo hold and a plurality of cargo hold, its characterized in that: the ship comprises a ship body, a ship body cargo hold, a ship body outer shell, a ship body inner shell, a ship body outer shell, a ship body side ballast tank, a ship body outer shell and a ship body side ballast tank, wherein the ship body side ballast tank is symmetrically arranged on two sides of the ship body cargo hold, the ship body side ballast tank is composed of a ship body inner shell, an anti-collision bulkhead, a rear cross bulkhead and the ship body outer shell, the ship body inner shell ismAnd 1.8m is less than or equal to bm≤b0Wherein b is0The minimum theoretical value of the width of the double shells of the traditional ore carrier is that the thicknesses of the anti-collision bulkhead and the rear lateral bulkhead are thickened or a reinforcing plate is arranged.
Furthermore, the inner shell and the outer shell of the bow cargo tank are respectively arranged along the length direction of the ship body, the anti-collision bulkhead and the rear transverse bulkhead are respectively arranged along the width direction of the ship body, and the inner shell, the anti-collision bulkhead, the rear transverse bulkhead and the outer shell of the ship body are mutually connected to form the bow side ballast tank.
Further, the minimum theoretical value b of the double hull width of the conventional ore carrier0Is determined by the width B of the ship, in particular
Figure BDA0002654645040000031
Further, the width of the part of the anti-collision bulkhead between the inner shell and the outer shell of the ship body of the bow cargo hold is bfAnd 1.8m is less than or equal to bf≤b0。
Further, the distance b between the inner shell of the bow cargo hold and the outer shell of the ship body is smaller than b at least in the part between the folding point and the anti-collision bulkhead0。
Further, the bottom of the ore carrier is provided with a double-layer bottom.
Furthermore, the double-layer bottom is composed of a bottom plate in the bow cargo compartment, an outer bottom plate of the ship body and bow cargo compartment inner shells on two sides, the bottom plate in the bow cargo compartment and the outer bottom plate of the ship body are arranged in the horizontal direction respectively, the bottom plate in the bow cargo compartment is positioned above the outer bottom plate of the ship body, and the bow cargo compartment inner shells extend downwards to the outer bottom plate of the ship body from two sides of the bow cargo compartment.
Furthermore, two sides of the interior of the double-layer bottom are respectively provided with a small empty cabin, one end of each small empty cabin along the length direction of the ship body is arranged on the anti-collision cabin wall, and the other end of each small empty cabin along the length direction of the ship body is positioned at b0The width of the small empty tank in the width direction of the ship is a and a + b at the rear side of the intersection point position of the line and the inner shell of the bow cargo tank>b0I.e. the inner side wall of the capsule is located at b0Inside the wire.
Furthermore, the small empty cabin consists of a bow cargo cabin inner shell, an anti-collision cabin wall, an inner side wall, a left side wall, a bow cargo cabin inner bottom plate and a ship body outer bottom plate.
Compared with the prior art, the utility model, have following advantage and effect: the utility model discloses a novel ore deposit ship of transportation light ore sand has reduced the local double-shelled width in bow side ballast tank, makes it be less than theoretical minimum b0Therefore, on the premise that the volume of the ship body is not changed, the capacity of the middle cargo hold is increased, so that the ore sand ship has enough large cargo hold capacity to transport bauxite; meanwhile, the weight of the bow cargo of the ship is increased due to the increased bow cargo hold capacity, so that the weight of the bow cargo of the ship is more balanced with the weight of the middle cargo hold, the sagging bending moment and the swelling deformation of the ship are obviously reduced, the floating state of the ship is improved, and the propelling performance of the ship is improved.
Drawings
Fig. 1 is a top view of the novel ore carrier for transporting light ore.
Fig. 2 is a sectional view of the novel ore carrier for transporting light ore sand according to the present invention from the a-a direction.
Detailed Description
To elaborate on the technical solution adopted by the present invention for achieving the predetermined technical purpose, the technical solution in the embodiment of the present invention will be clearly and completely described below by combining with the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a partial embodiment of the present invention, not a whole embodiment, and technical means or technical features in the embodiment of the present invention can be replaced without paying creative efforts, and the present invention will be described in detail below by combining with the embodiments with reference to the drawings.
As shown in figure 1 and figure 2, the utility model discloses a novel ore deposit ship of transportation light ore sand contains bow cargo hold 1 and a plurality of cargo hold 2, and the bilateral symmetry of bow cargo hold 1 is provided with bow side ballast tank 3, and bow side ballast tank 3 comprises bow cargo hold inner shell 4, crashproof bulkhead 5, rear cross bulkhead 6 and hull shell 7, and bow cargo hold inner shell 4 sets up the breakpoint 8, and the distance between breakpoint 8 and hull shell 7 is bmAnd 1.8m is less than or equal to bm≤b0Wherein b is0Is the minimum theoretical value of the width of the double shell of the traditional ore sand ship, and the thicknesses of the anti-collision bulkhead 5 and the rear lateral bulkhead 6 are thickened or provided with reinforcing plates. Due to bmIs less than the theoretical minimum value b0Therefore, in the embodiment, the strength of the inner shell 4 of the bow cargo compartment is enhanced by arranging the folding points 8 on the inner shell 4 of the bow cargo compartment, and the anti-collision bulkhead 5 and the rear transverse bulkhead 6 are enhanced by thickening about 20mm or welding a reinforcing plate, so that the stability of the broken cabin of the ship is ensured. The local width of the bow side ballast tank 3 is reduced to be smaller than the theoretical minimum value, so that the capacity of a middle cargo hold is increased on the premise that the volume of a ship body is not changed, and the ore carrier has enough cargo hold capacity to transport bauxite; meanwhile, the increased capacity of the bow cargo hold increases the weight of the bow cargo of the ship, so that the weight of the bow cargo is more balanced with the weight of the middle cargo hold, the sagging bending moment and the ship swelling deformation are obviously reduced, and the propelling performance of the ship is improved.
The inner hull 4 and the outer hull 7 of the bow cargo tank are respectively arranged along the length direction of the hull, the anti-collision bulkhead 5 and the rear transverse bulkhead 6 are respectively arranged along the width direction of the hull, and the inner hull 4, the anti-collision bulkhead 5, the rear transverse bulkhead 6 and the outer hull 7 of the hull are mutually connected to form the bow side ballast tank 3.
Minimum theoretical value b of double-shell width of traditional ore carrier0Is determined by the width B of the ship, in particular
Figure BDA0002654645040000051
The width of the part of the anti-collision bulkhead 5 between the inner shell 4 of the bow cargo hold and the outer shell 7 of the ship body is bfAnd 1.8m is less than or equal to bf≤b0。
The distance b between the inner shell 4 and the outer shell 7 of the ship body is smaller than b at least between the folding point 8 and the anti-collision bulkhead 50I.e. the distance b between the break 8 and the crash bulkhead 5 is smaller than b0。
The bottom of the ore carrier is provided with a double-layer bottom. The double-layer bottom is composed of a bottom plate 9 in the bow cargo hold, an outer bottom plate 10 of the ship body and bow cargo hold inner shells 4 on two sides, the bottom plate 9 in the bow cargo hold and the outer bottom plate 10 of the ship body are respectively arranged along the horizontal direction, wherein the bottom plate 9 in the bow cargo hold is positioned above the outer bottom plate 10 of the ship body, and the bow cargo hold inner shells 4 extend downwards to the outer bottom plate 10 of the ship body from two sides of the bow cargo hold 1.
Two sides of the inner part of the double-layer bottom are respectively provided with a small empty cabin 11, one end of the small empty cabin 11 along the length direction of the ship body is arranged on the anti-collision cabin wall 5, and the other end of the small empty cabin 11 along the length direction of the ship body is positioned at b0The width of the small empty tank 11 in the width direction of the ship is a, and a + b is provided at the rear side of the intersection position of the line and the inner shell of the bow cargo tank>b0I.e. the inner side wall of the capsule 11 is located at b0Inside the wire. The small empty cabin 11 consists of a bow cargo cabin inner shell 4, an anti-collision bulkhead 5, an inner side wall 12, a left side wall 13, a bow cargo cabin inner bottom plate 9 and a ship body outer bottom plate 10.
When calculating the stability of the broken cabin, the most severe condition that the cargo cabin, the ballast cabin and the double-layer bottom are broken simultaneously needs to be considered, and at this time, the broken stability often cannot meet the standard requirement; in order to ensure that the cabin breaking calculation of the bow cargo compartment region meets the specification requirement, the embodiment adds a watertight small empty compartment region at each of the two ends of the double-layer bottom, thereby ensuring that the double-layer bottom regions are all located at b0Within the range, the double-layer bottom damage does not need to be considered when calculating the cabin breaking stability, and the standard requirement can be met.
The present invention will be further described with reference to the following specific examples.
Reducing the double-shell of the bow cargo hold 1 will increase the cargo hold capacity of the bow cargo hold, has improved the cargo capacity of the bow cargo hold 1, reduce the sagging moment when the homogeneity is loaded, has reduced the deformation in the ship, adopt the double-shell width range in the bow cargo hold area within 5-11.5m, after the double-shell width value of the bow cargo hold is less than the double-shell width of traditional ore sand ship, through increasing additional stability and intensity etc. check calculation, in order to guarantee the security of boats and ships, the double-shell structure bc of traditional ore sand ship adopts the formula usually:
bc＝b0+△y，Δy>0 to obtain a suitable cargo hold volume matching the high cargo density of the iron ore sand, and when the width of the ship is more than 50m, the delta y is usually about 1.8 m. The width b of the double shell of the bow cargo hold is more than 1.8 meters and less than b0I.e. 1.8 m. ltoreq. bm≤b0Other double shells having a width close to or equal to b0I.e. b ≈ b 0.
Wherein: bcIs the width of a double shell of a traditional ore carrier, b0The theoretical minimum double hull width for a conventional ore carrier, the value of which is related to the width B of the vessel, is according to the formula:
Figure BDA0002654645040000071
the minimum value of 1.8m is determined by the construction minimum requirement.
Extra stability and strength that the bow cargo hold needs to increase are checked:
when checking the stability of the broken hold according to ILLC Reg.27, the transverse damage range needs to reach min (B/5,11.5m), therefore, when the area of the bow hold is damaged, the stability of the bow ballast hold and the bow hold when damaged simultaneously needs to be considered, and the water inlet structural strength of the bow hold when water enters is checked.
Take B as an example 60 m:
example 1, conventional 31 ten thousand ton ore carrier case: double shell width b at one end b of the crash bulkheadm＝12.8m，bfB is taken as the width b of the other cargo hold double shells which is 12.1maThe hold capacity is about 187,000m3 for 16m, and 119% for bauxite when fully loaded. Therefore, the capacity of the cargo tank is insufficient, and the capacity of the cargo tank is different from 19%, so that the bauxite cannot meet the operation requirement.
Example 2 double ShellWidth b at one end b of the crash bulkheadm＝11.5m，bfB is taken from the width b of other cargo holds with the value of 8.0maWhen the load capacity of the cargo hold is 11.5m, the capacity of the cargo hold can reach 230,000m3, the vertical bending moment is reduced by about 48 percent, and the utilization rate of the bauxite hold is about 90 percent when the bauxite is fully loaded.
Example 3 double hull Width b at Buck Bulkhead end bm＝5.0m，bfB is taken as the width b of the double shells of other cargo holds which is 8.0maWhen the load capacity of the cargo hold is 11.5m, the hold capacity of the cargo hold can reach 233,000m3, the middle vertical bending moment is reduced by about 58 percent, and the utilization rate of the capacity of the full-load bauxite hold is about 88.9 percent.
Example 4 double Shell Width b in crashBulkhead bm＝1.8m，bfB is taken as the width b of the double shells of other cargo holds which is 8.0maWhen the load capacity of the cargo hold is 11.5m, the capacity of the cargo hold can reach 235,000m3, the vertical bending moment is reduced by about 68 percent, and the utilization rate of the capacity of the full-load bauxite is about 88.1 percent.
In summary, the ore carrier adopting the novel double-shell structure width can meet the requirement of the capacity of a cargo hold for carrying bauxite in design, and the sagging bending moment is obviously reduced. The ore sand ship with the novel double-shell structure width has a large enough cargo hold capacity for transporting bauxite, and can obviously reduce sagging moment and swelling deformation.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment without departing from the technical scope of the present invention, but all the modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principle of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims (9)

1. Novel ore carrier for transporting light ore sand, comprising bow goodsCabin and a plurality of cargo hold, its characterized in that: the ship comprises a ship body, a ship body cargo hold, a ship body outer shell, a ship body inner shell, a ship body outer shell, a ship body side ballast tank, a ship body outer shell and a ship body side ballast tank, wherein the ship body side ballast tank is symmetrically arranged on two sides of the ship body cargo hold, the ship body side ballast tank is composed of a ship body inner shell, an anti-collision bulkhead, a rear cross bulkhead and the ship body outer shell, the ship body inner shell ismAnd 1.8m is less than or equal to bm≤b0Wherein b is0The minimum theoretical value of the width of the double shells of the traditional ore carrier is that the thicknesses of the anti-collision bulkhead and the rear lateral bulkhead are thickened or a reinforcing plate is arranged.
2. A novel ore carrier for transporting light ore according to claim 1, characterized in that: the inner shell and the outer shell of the bow cargo tank are arranged along the length direction of the ship body respectively, the anti-collision bulkhead and the rear transverse bulkhead are arranged along the width direction of the ship body respectively, and the inner shell, the anti-collision bulkhead, the rear transverse bulkhead and the outer shell of the ship body are connected with one another to form a bow side ballast tank.
3. A novel ore carrier for transporting light ore according to claim 1, characterized in that: minimum theoretical value b of double-shell width of traditional ore carrier0Is determined by the width B of the ship, in particular
Figure DEST_PATH_IMAGE002
。
4. A novel ore carrier for transporting light ore according to claim 1, characterized in that: the width of the part of the anti-collision bulkhead between the inner shell and the outer shell of the ship body of the bow cargo hold is bfAnd 1.8m is less than or equal to bf≤b0。
5. The novel ore carrier for transporting light ore according to claim 4, characterized in that: the distance b between the inner shell and the outer shell of the ship body of the bow cargo hold is smaller than b at least between the folding point and the anti-collision bulkhead0。
6. The novel ore carrier for transporting light ore according to claim 5, characterized in that: the bottom of the ore carrier is provided with a double-layer bottom.
7. The novel ore carrier for transporting light ore according to claim 6, characterized in that: the double-layer bottom is composed of a bottom plate in the bow cargo compartment, an outer bottom plate of the ship body and bow cargo compartment inner shells on two sides, the bottom plate in the bow cargo compartment and the outer bottom plate of the ship body are arranged in the horizontal direction respectively, the bottom plate in the bow cargo compartment is located above the outer bottom plate of the ship body, and the bow cargo compartment inner shells extend downwards from two sides of the bow cargo compartment to the outer bottom plate of the ship body.
8. The novel ore carrier for transporting light ore according to claim 7, characterized in that: two sides of the interior of the double-layer bottom are respectively provided with a small empty cabin, one end of each small empty cabin along the length direction of the ship body is arranged on the anti-collision cabin wall, and the other end of each small empty cabin along the length direction of the ship body is positioned at b0The width of the small empty tank in the width direction of the ship is a and a + b at the rear side of the intersection point position of the line and the inner shell of the bow cargo tank>b0I.e. the inner side wall of the capsule is located at b0Inside the wire.
9. A novel ore carrier for transporting light ore according to claim 8, characterized in that: the small empty cabin consists of a bow part cargo cabin inner shell, an anti-collision cabin wall, an inner side wall, a left side wall, a bow part cargo cabin inner bottom plate and a ship body outer bottom plate.
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CN114348172A (en) * 2022-02-22 2022-04-15 广船国际有限公司 Boats and ships without nose tip cabin

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CN111959680A (en) * 2020-08-26 2020-11-20 广船国际有限公司 Large-capacity ship and inner shell arrangement method thereof

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CN104627320B (en) * 2015-02-16 2018-01-23 广船国际有限公司 A kind of midship cross section structure of large-scale ore carrier
CN105109619A (en) * 2015-09-28 2015-12-02 上海船舶研究设计院 Cargo compartment support structure for ultra-large ore carrier
CN110091960B (en) * 2019-05-09 2021-10-08 中国船舶工业集团公司第七0八研究所 Cargo hold structure of ultra-large oil tanker with no cross braces and less oscillating bulkheads

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114348172A (en) * 2022-02-22 2022-04-15 广船国际有限公司 Boats and ships without nose tip cabin

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