CN215883971U

CN215883971U - Outer bottom plate structure of large-scale LNG ship bow under high ice level

Info

Publication number: CN215883971U
Application number: CN202122258412.3U
Authority: CN
Inventors: 姜甲志
Original assignee: Hudong Zhonghua Shipbuilding Group Co Ltd
Current assignee: Hudong Zhonghua Shipbuilding Group Co Ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-02-22
Anticipated expiration: 2031-09-17

Abstract

The utility model provides an outer bottom plate structure of a bow part of a large LNG ship under a high ice level, which comprises an outer plate and an ice skate longitudinal girder, wherein the outer plate is welded on two sides of the ice skate longitudinal girder, the bottom of the ice skate longitudinal girder is exposed out of the outer plate, the outer plate is sequentially provided with a third end platform, a second end platform, a first end platform and a middle platform from top to bottom along the ship height direction, the middle platform is arranged at the middle position between the first end platform and the ship bottom, the first end platform is arranged below an ice loading belt line, a transverse rib and a middle longitudinal girder are arranged on the outer plate at the part below the first end platform, the transverse rib is arranged between adjacent transverse rib plates, the transverse rib is arranged along the height direction of the outer plate, and the middle longitudinal girder is arranged along the ship length direction. The utility model cancels the original outer plate longitudinal frame under the upper ice belt, and rearranges the aggregate structure in the area as the ice area strengthening area of the outer bottom plate of the bow.

Description

Outer bottom plate structure of large-scale LNG ship bow under high ice level

Technical Field

The utility model relates to the technical field of ship construction, in particular to an outer bottom plate structure of a bow part of a large LNG ship under a high ice level.

Background

When the ship sails on a polar course, the ship body is extruded by ice load and is transferred to the corresponding framework through the ship body outer plates due to the interaction of the ship and the ice, and the shearing force applied to the ship body structure is larger compared with that of the ship on the non-polar course, so that the specific area between the ice belting line and the ice belting line on the side of the ship body structure must be properly reinforced to resist the destructive effect of the ice load.

The bow of the large LNG ship is of a single-shell structure, the structural characteristics of the ice area are combined, the bow structure is in charge of ice collision and ice breaking requirements of the whole ship, and therefore the bow structure is high in strength.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present invention is directed to providing an outer bottom plate structure of a bow of a large LNG ship under a high ice level, which adopts a mixed skeleton form combining a horizontal skeleton type and a vertical skeleton type and uses a mixed stem comprising a combination of a steel plate and a steel casting to ensure the strength of the outer bottom plate of the bow.

In order to achieve the above and other related objects, the utility model provides an outer bottom plate structure of a bow of a large LNG ship at a high ice level, which comprises an outer plate and an ice skate longitudinal girder, wherein the outer plate is welded on two sides of the ice skate longitudinal girder, the bottom of the ice skate longitudinal girder is exposed out of the outer plate, the outer plate is sequentially provided with an end platform III, an end platform II, an end platform I and a middle platform from top to bottom along the ship height direction, the middle platform is arranged at the middle position between the end platform I and the ship bottom, the end platform I is arranged below an ice loading strip line, the outer plate at the part below a rib of the end platform I is provided with a transverse rib plate and a middle longitudinal girder, the transverse rib plate is arranged between adjacent transverse rib plates, the transverse rib plate is arranged along the height direction of the outer plate, and the middle longitudinal girder is arranged along the ship length direction.

As the preferred technical scheme, both sides of the bottom of the ice skate blade stringer are in a shape of a rounded corner, and the radius of the rounded corner is 3 mm.

Preferably, transverse ribs are arranged on rib position lines between the transverse ribs.

As a preferred technical solution, 7 transverse ribs are arranged between every two adjacent transverse ribs.

Preferably, an anti-roll toggle plate is arranged between the middle longitudinal girder and the transverse rib plate.

As a preferable technical scheme, a steel casting is arranged at the end part of the bottom of the outer plate to serve as a stem.

Preferably, an end toggle plate is arranged at a position where the transverse rib and the end platform are welded.

Preferably, the intermediate stringers and the outer panels are welded by means of symmetrical welding.

As described above, the present invention has the following advantageous effects:

(1) the utility model cancels the original outer plate longitudinal frame under the upper ice belt, and rearranges the aggregate structure in the area as the ice area strengthening area of the outer bottom plate of the bow.

(2) In order to meet the ice breaking requirement, the outer plates are welded on the left and right sides of the ice skate blade longitudinal girders and are arrow-shaped by using the ice skate blade type bow parts, and the end parts of the ice skate blade longitudinal girders are in a rounded corner shape, so that the ice breaking strength is improved.

Drawings

Fig. 1 is a schematic view showing an unfolded structure of the outer panel according to the present invention.

Figure 2 shows a cross-sectional view of the bow in the direction a-a.

Figure 3 shows a cross-sectional view of the bow in the direction B-B.

Fig. 4 is a schematic view showing the structure of the ice blade type stem.

Wherein the reference numerals are specified as follows: the device comprises an outer plate 1, a steel casting 2, an ice skate blade longitudinal girder 3, a transverse rib plate 4, a transverse rib 5, a middle longitudinal girder 6, a first end platform 7, a middle platform 8, a second end platform 9, a third end platform 10, an anti-tilt elbow plate 11 and an outer plate longitudinal skeleton 12.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 4. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

With the development of oil and gas resources in the world, the polar channel is also widened, and the bearing capacity of large-scale LNG ships is increased, but the ships sailing in the polar region need to be structurally strengthened. An upper ice belt line and a lower ice belt line are preset in the side of the ship body structure, the upper ice belt line is the highest position in contact with floating ice in the polar region, the lower ice belt line is the lowest position in contact with the floating ice in the polar region, according to the specification requirement of the ship polar society, the area needing to be reinforced is the area of the outer plate 1 between the upper ice belt line and the lower ice belt line, and in the structural design of the bow part, the bottom of the bow part is raised, so that only the area below the upper ice belt line needs to be considered.

In view of the above background, the present invention provides an outer bottom plate structure of a bow of a large LNG ship at a high ice level, which comprises an outer plate 1 and an ice blade stringer 3, the outer plates 1 are welded on two sides of the ice skate blade longitudinal girder 3, the bottom of the ice skate blade longitudinal girder 3 is exposed out of the outer plates 1, the outer plate 1 is sequentially provided with an end platform III 10, an end platform II 9, an end platform I7 and a middle platform 8 from top to bottom along the ship height direction, the middle platform 8 is arranged at the middle position between the end platform I7 and the bottom of the ship, the end platform I7 is arranged below the ice belt line, the outer plate 1 below the end platform I7 is provided with transverse ribs 5 and a middle longitudinal girder 6, the transverse ribs 5 are arranged between the adjacent transverse ribs 4, the transverse ribs 5 are arranged along the height direction of the outer plate 1, and the middle longitudinal girders 6 are arranged along the direction of the ship length.

Wherein, the both sides of the bottom of skates vertical girder 3 set up to radius horn shape, and the radius of radius angle is 3 millimeters, and skates vertical girder 3 is the higher thick plate of intensity to the requirement of adaptation icebreaking, planking 1 welds about skates vertical girder 3, is the arrow point type.

Transverse ribs 5 are arranged on rib position lines between the transverse rib plates 4, the positions of the original transverse rib plates 4 are used below the ice belt along the ship length direction, the transverse ribs 5 are arranged between every two transverse rib plates 4 in the area between every two transverse rib plates 4, namely n, n +5, n +10 … … are the ship body rib positions, n +8, n +16 … … are the original rib plates, the ribs are arranged at the positions of n +1, n +2 … … n +7, and end toggle plates are arranged at the positions where the transverse ribs 5 are welded with the end platform I7. 7 transverse ribs 5 are arranged between every two adjacent transverse rib plates 4.

From the direction of hull bottom to platform, along the direction of original planking indulge bone 12, one fore-and-aft middle vertical girder 6 is arranged to every two shelves, and middle vertical girder 6 is as additional strengthening, plays the effect of strengthening the hull structure, sets up between middle vertical girder 6 and the horizontal floor 4 and prevents inclining bracket 11.

The bottom of the outer plate 1 is provided with a steel casting 2 at the end part as a stem. The middle longitudinal girder 6 and the outer plate 1 are welded in a symmetrical welding mode, and an included angle formed by the outer plate 1 and the ice skate longitudinal girder 3 is filled in a dip angle welding mode by using a welding method.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a large-scale LNG bow portion outer floor structure under high ice level, its characterized in that includes planking and skates and indulges the purlin, the planking weld in the both sides that the purlin was indulged to the skates, the bottom of skates indulges the purlin exposes the planking, the planking has set gradually tip platform three, tip platform two, tip platform one and middle platform from top to bottom along the direction of ship height, middle platform sets up in the intermediate position of tip platform one and boats and ships bottom, tip platform one sets up in the below of last ice belt line, be provided with horizontal rib and middle stringer on the planking of tip platform below part, horizontal setting between adjacent horizontal rib plate, horizontal rib sets up along the direction of height of planking, middle stringer is arranged along the long direction of ship.

2. The outer bottom template structure of the bow of the large-scale LNG ship under the high ice level as claimed in claim 1, wherein both sides of the bottom of the ice skate stringer are provided with rounded corners, and the radius of the rounded corners is 3 mm.

3. The outer bottom template structure of the bow of the large-scale LNG ship under the high ice level as claimed in claim 1, wherein the rib lines between the transverse ribs are all provided with transverse ribs.

4. The outer bottom template structure of the bow of the large-scale LNG ship under the high ice level of claim 3, wherein 7 transverse ribs are arranged between every two adjacent transverse ribs.

5. The outer bottom template structure of the bow of the large-scale LNG ship under the high ice level as claimed in claim 1, wherein an anti-tilting bracket is arranged between the middle stringer and the transverse rib plate.

6. The outer bottom template structure of the bow of the large-scale LNG ship under the high ice level as claimed in claim 1, wherein the bottom of the outer plate is provided with a steel casting at the end as a stem.

7. The outer bottom template structure of the bow of the large-scale LNG ship under the high ice level as claimed in claim 1, wherein the end brackets are arranged at the position where the transverse ribs are welded with the end platforms.

8. The outer bottom template structure of the bow of the large-scale LNG ship under the high ice level as claimed in claim 1, wherein the middle stringers and the outer plates are welded in a symmetrical welding manner.