Hidden hatch corner structure
By setting up closed corner holes at the corner corner of the ship's hatch, the corrosion problem caused by water accumulation in the hatch corner structure is solved, the construction process is simplified, and the safety of the hull structure and the stability of loading and unloading cargo is improved.
Patent Information
- Application Number
- CN202420968301.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The existing ship hatch corner structure has grooves on the cargo hold boundary, which is prone to water and cargo accumulation, resulting in corrosion of the strong deck corner, which is complex in structure and difficult to construct.
A hidden hatch corner structure is designed, and corner holes are provided at the corner corner of the deck hatch and closed with a sealing plate. The corner holes are located outside the combination of the longitudinal enclosure and bulkhead, and are isolated from the deck hatch. In addition, avoid rainwater gathering.
Effectively prevent the hatch corner structure from being corroded and damaged, simplify the construction process, reduce stress concentration, improve the safety of the hull structure, and reduce the risk of damage during loading and unloading of goods.
Smart Images
Figure CN222329946U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of deck hatch structure design, in particular to a hidden hatch corner structure. Background Art
[0002] Among existing ships, some large hatch ships, such as container ships and multi-purpose ships, have weak anti-torsion capacity in the cargo hold section, and the hatch corner structure of the strong deck will produce stress concentration due to the hull torque. The specifications of major classification societies require that the hatch corners of the cargo hold on the strong deck should be rounded corners or rounded corners with negative radius, and the radius should be greater than the minimum value required by the specifications to reduce stress concentration.
[0003] Generally speaking, the larger the corner radius of the strong deck, the smaller the stress. However, from the perspective of ship use, the corner radius should be as small as possible to avoid collisions during loading and unloading of cargo. In particular, the corner radius of the strong deck hatch of a container ship needs to avoid the container rails. If the hatch is relatively compact, the corner radius may not meet the minimum value required by the specification; negative corners are an optimized solution for circular corners. The arc part of the strong deck is arranged outside the side line of the horizontal cargo hatch, which will not hinder cargo loading and unloading.
[0004] like Figure 1 As shown, the basic structure of the current deck hatch is as follows:
[0005] The wall surface below the deck of the deck hatch is called a bulkhead, wherein the bulkhead in the direction of the length of the ship is called a longitudinal bulkhead 31, and the bulkhead in the direction of the width of the ship is called a transverse bulkhead 32.
[0006] A coaming is also provided at the deck hatch, and the coaming is located above the deck, wherein the coaming in the direction of the length of the ship is called a longitudinal coaming 51, and the coaming in the direction of the width of the ship is called a transverse coaming 52.
[0007] A hatch corner structure 1 is arranged at the corner of the deck hatch. The hatch corner structure 1 is in the form of a rounded corner and is arranged outside the transverse hatch edge line, i.e., a negative corner. Such an arrangement requires a groove to be opened on the boundary of the cargo hold.
[0008] With respect to the above-mentioned hatch corner structure 1, the current problem is that the above-mentioned hatch corner structure 1 requires a groove to be opened on the boundary of the cargo hold, and the groove is prone to water and cargo accumulation, which accelerates the corrosion of the strong deck corner and endangers the structural strength of the hull. The structure is relatively complex and the construction is difficult. Summary of the invention
[0009] The utility model aims to provide a hidden hatch corner structure, in which rainwater will not gather, thereby preventing the hatch corner structure from being damaged by rust.
[0010] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:
[0011] A hidden hatch corner structure, which is arranged at the corner of a deck hatch; the wall of the deck hatch below the deck is a bulkhead, and there is a coaming at the deck hatch, and the coaming is arranged above the deck; the hatch corner structure includes a corner hole and a sealing plate, the corner hole is opened on the deck, the corner hole is located on the side outside the longitudinal hatch edge line of the deck hatch, and the corner hole is located on the hatch side of the extension line of the transverse hatch edge line; the corner hole is on the outside of the complete wall surface formed by the longitudinal coaming and the longitudinal bulkhead, the corner hole is isolated from the deck hatch, and the corner hole is connected to the side empty tank; on the outside of the longitudinal coaming, the sealing plate is used to close the corner hole.
[0012] Furthermore, the corner hole is located on the outside of the complete wall surface formed by the combination of the longitudinal coaming and the longitudinal bulkhead, and its specific structural form is: the deck body between the corner hole and the longitudinal hatch edge line is a narrow strip-shaped entity, and the narrow strip-shaped entity serves as a narrow strip body, and the longitudinal coaming at the upper part of the deck hatch is welded to the upper part of the narrow strip body, and the longitudinal bulkhead at the lower part of the deck hatch is welded to the lower part of the narrow strip body.
[0013] Furthermore, the sealing plate seals the corner hole at the angle between the longitudinal enclosure and the deck.
[0014] Furthermore, the corner hole is an oblong shape.
[0015] Furthermore, the radius of the fillet at the corner of the deck hatch is within the range of 50 to 250 mm.
[0016] Compared with the prior art, the hatch corner structure of the utility model has the following beneficial effects:
[0017] In the hatch corner structure of the utility model, the corner hole is located on the outside of the complete wall surface formed by the combination of the longitudinal coaming and the longitudinal bulkhead, and the corner hole is isolated from the deck hatch. In addition, a sealing plate is used to close the corner hole on the outside of the longitudinal coaming. In this way, the corner hole is completely isolated from the outside world. No matter how windy or rainy it is outside, rainwater will not gather at the hatch corner structure, thus avoiding the hatch corner structure from being rusted and damaged, which is beneficial to protecting the safety of the hull structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic diagram of a hatch corner structure in the prior art;
[0019] Figure 2This is a schematic diagram of the hidden hatch corner structure of the utility model. This figure is a view from the inside of the deck hatch. Due to the obstruction of the longitudinal coaming, the corner hole cannot be seen;
[0020] Figure 3 This is a top view of the deck at the corner of the deck hatch;
[0021] Figure 4 for Figure 3 Cross-sectional view at AA in the middle. DETAILED DESCRIPTION
[0022] The utility model is further described below with specific embodiments:
[0023] Those skilled in the art are aware that hatches are provided on the decks of cargo ships, and the deck hatches are used to load and unload cargoes into and out of the cabins.
[0024] See also Figure 2 , the basic structure of the deck hatch is as follows:
[0025] The wall surface below the deck of the deck hatch is called a bulkhead, wherein the bulkhead in the direction of the ship length is called a longitudinal bulkhead 31, and the bulkhead in the direction of the ship width is called a transverse bulkhead 32. A coaming is also provided at the deck hatch, and the coaming provided is located above the deck, wherein the coaming in the direction of the ship length is called a longitudinal coaming 51, and the coaming in the direction of the ship width is called a transverse coaming 52. Those skilled in the art are aware that a corner structure is usually provided at the corner position of the deck hatch.
[0026] The above is the structure of the prior art.
[0027] This implementation is an innovative improvement on the corner structure provided at the corner position of the deck hatch.
[0028] This embodiment provides a hidden hatch corner structure, the most important feature of which is that the main part of the corner structure is located on the outside of the longitudinal hatch coaming of the deck.
[0029] Specifically, see Figures 1 to 3 ,
[0030] The hatch corner structure includes a corner hole 11 and a sealing plate 12. The corner hole 11 is a through hole (through deck) opened on the deck 4 at the corner of the deck hatch. The opening position is located outside the longitudinal hatch edge line of the deck hatch and is located on the hatch side of the extension line of the transverse hatch edge line. Figure 3 shown.
[0031] The corner hole 11 is a main part of the hatch corner structure and plays a role in reducing corner stress.
[0032] The corner hole 11 is in an oblong shape, and the corner arranged in this way is in a large arc shape, which has the advantage of being able to achieve a corner with a larger radius.
[0033] In this embodiment, since the corner hole 11 is provided, the corner hole 11 actually plays the role of a corner. In this way, the radius of the fillet set at the corner of the deck hatch can be within the range of 50 to 250 mm, which is much smaller than the value required by the specification, and the maximum stress does not exceed the allowable range of stress in the specification.
[0034] The deck body between the corner hole 11 and the longitudinal hatch edge is in a narrow strip shape (such as Figure 3 For the convenience of subsequent description, this narrow strip entity is referred to as a "narrow strip body". That is to say, there is a narrow strip body between the corner hole 11 and the longitudinal hatch edge line.
[0035] The longitudinal coaming 51 at the upper part of the deck hatch (above the deck 4) is welded to the upper part of the narrow strip, and the longitudinal bulkhead 31 at the lower part of the deck hatch (below the deck 4) is welded to the lower part of the narrow strip. That is to say, at the narrow strip, the longitudinal coaming 51 and the longitudinal bulkhead 31 are normally connected to the deck 4, so that the corner hole 11 is completely outside the "complete wall surface formed by the longitudinal coaming 51 and the longitudinal bulkhead 31 combined together", that is, the corner hole 11 is completely isolated from the deck hatch, such as Figure 2 shown.
[0036] Then, on the outer side of the longitudinal coaming 51, the corner hole 11 is closed by a sealing plate 12, so that the corner hole 11 is closed at the angle between the longitudinal coaming 51 and the deck 4, that is, the corner hole 11 is completely isolated from the outside (air space), and the corner hole 11 is only connected to the side empty space, so that the corner hole 11 is in the empty space, such as Figure 4 shown.
[0037] In this way, no matter how windy or rainy it is outside, rainwater will not gather at the hatch corner structure 1, thus avoiding the situation of "the hatch corner structure 1 being corroded and damaged, endangering the structural strength of the hull".
[0038] The hatch corner structure of this embodiment has the following advantages:
[0039] 1) In the hatch corner structure of the present embodiment, the corner hole 11 is located outside the complete wall surface formed by the longitudinal coaming 51 and the longitudinal bulkhead 31, and the corner hole 11 is isolated from the deck hatch. In addition, the corner hole 11 is sealed by a sealing plate 12 on the outside of the longitudinal coaming 51. In this way, the corner hole 11 is completely isolated from the outside world. No matter how windy or rainy it is, rainwater will not gather at the hatch corner structure 1, so that the hatch corner structure 1 is prevented from being damaged by rust, which is beneficial to protecting the safety of the hull structure.
[0040] 2) On the inner side of the deck hatch, the coaming and bulkhead are completely and continuously connected, with no grooves at the joints, no risk of water or cargo accumulation, and easy tank cleaning;
[0041] 3) The radius of the fillet at the corner of the deck hatch can be set within the range of 50 to 250 mm, which is much smaller than the value required by the specification, so as to facilitate cargo loading and unloading and reduce the probability of damage;
[0042] 4) Only holes need to be drilled on the upper deck, without the need to cut notches on the transverse warehouse wall and transverse hatch coaming, thus reducing the difficulty of construction;
[0043] 5) Compared with the existing hatch corner structure, the stress concentration problem is improved, increasing the safety of the hull structure.
[0044] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A hidden hatch corner structure, which is arranged at the corner of a deck hatch; The wall surface of the deck hatch below the deck is the bulkhead. A coaming is provided at the deck hatch, and the coaming is arranged above the deck; Features: The hatch corner structure comprises a corner hole (11) and a sealing plate (12). The corner hole (11) is opened on the deck (4), and the corner hole (11) is located on a side outside the longitudinal hatch edge line of the deck hatch, and the corner hole (11) is located on the hatch side of the extension line of the transverse hatch edge line; The corner hole (11) is located outside a complete wall surface formed by combining the longitudinal coaming (51) and the longitudinal bulkhead (31), the corner hole (11) is isolated from the deck hatch, and the corner hole (11) is connected to the side empty space; On the outer side of the longitudinal enclosure (51), the corner hole (11) is closed by using the sealing plate (12).
2. The hidden hatch corner structure according to claim 1, characterized in that: The corner hole (11) is located outside the complete wall surface formed by combining the longitudinal enclosure (51) and the longitudinal bulkhead (31), and its specific structural form is: The deck body between the corner hole (11) and the longitudinal hatch edge line is a narrow strip-shaped entity, which serves as a narrow strip body. The longitudinal coaming (51) at the upper part of the deck hatch is welded to the upper part of the narrow strip body, and the longitudinal bulkhead (31) at the lower part of the deck hatch is welded to the lower part of the narrow strip body.
3. The hidden hatch corner structure according to claim 1, characterized in that: The sealing plate (12) seals the corner hole (11) at the angle between the longitudinal enclosure plate (51) and the deck (4).
4. The hidden hatch corner structure according to claim 1, characterized in that: The corner hole (11) is in the shape of an oblong.
5. The hidden hatch corner structure according to claim 1, characterized in that: The radius of the fillet at the corner of the deck hatch is within the range of 50 to 250 mm.