Stress release flat iron expansion joint

Abstract

The utility model discloses a stress relief flat iron expansion joint, which relates to the technical field of ship manufacturing and comprises oil retaining flat iron which surrounds a deck and is vertically and fixedly connected to the deck of a ship, a plurality of expansion joints are mounted among the oil retaining flat iron at intervals, and each expansion joint comprises a body connected with the oil retaining flat iron. The arch-shaped bulge is formed by bending outwards from the middle part of the body and has a wide upper part and a narrow lower part; the expansion joints are arranged at the gunwale oil blocking flat iron at certain intervals, stress generated by deformation of the oil tanker under different working conditions when the oil tanker sails on the sea is absorbed, and the oil blocking flat iron is prevented from being broken and damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of shipbuilding, in particular to a stress-releasing flat iron expansion joint. Background Art

[0002] According to the requirements of the Common Structural Rules for Oil Tankers (CSR), oil spills from the tanker deck should be prevented from spreading to the accommodation and service areas, and a continuous coaming should be installed around the cargo deck to prevent oil spills from being discharged into the sea. Therefore, in the design and construction of oil tankers, oil retaining irons will be installed around the cargo hold to meet the above requirements.

[0003] When an oil tanker is sailing at sea, it is affected by factors such as ship loading and wave loads, causing it to sag and arch in the middle. This will exert a large tensile and extrusive pressure on the oil retaining flat irons arranged on the side of the cargo hold. In severe cases, the oil retaining flat irons may be broken and damaged, losing their ability to prevent oil spills into the sea. Utility Model Content

[0004] The utility model aims to provide a stress-relieving flat iron expansion joint. Expansion joints are arranged at regular intervals on the side oil retaining flat iron to absorb the stress caused by the deformation of the hull under different working conditions when the oil tanker is sailing at sea, thereby preventing the oil retaining flat iron from breaking and being damaged.

[0005] The utility model comprises oil-blocking flat irons which surround the deck and are vertically fixed on the deck of a ship. A plurality of expansion joints are installed at intervals between the oil-blocking flat irons. The expansion joints comprise a body connected to the oil-blocking flat irons and an arched protrusion which is bent outward from the middle of the body and is wide at the top and narrow at the bottom.

[0006] Preferably, the arched protrusion is conical, and the top of the cone is flush with the lower plane of the oil-blocking flat iron.

[0007] Preferably, the arched protrusion is conical, and the top of the cone is located above the lower plane of the oil-blocking flat iron.

[0008] Preferably, the arched protrusion is in the shape of a truncated cone, and the lower surface of the truncated cone is located above the lower plane of the oil-blocking flat iron.

[0009] Preferably, the expansion joint is formed by pressing a flat iron having the same height and thickness as the oil-blocking flat iron.

[0010] In summary, the present invention has the following beneficial effects:

[0011] 1. Expansion joints are installed between the oil-blocking flat irons on the side of the ship. The optimized design of the oil-blocking flat irons solves the problem of traditional oil-blocking flat irons being easily broken and failing when subjected to external forces, thus preventing oil spills from being discharged into the sea and polluting the marine environment.

[0012] 2. The stress relief flat iron expansion joint is designed to be wide at the top and narrow at the bottom, which can effectively absorb the stress generated by the deformation of the hull during navigation, better meet the stress conditions of the oil retaining flat iron, and ensure the effective function of the side oil retaining flat iron. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation of a stress relief flat iron expansion joint and an oil retaining flat iron according to the utility model;

[0014] Figure 2 This is a three-dimensional diagram of a stress-relieving flat iron expansion joint according to the present invention;

[0015] Figure 3 This is a front view of a first embodiment of a stress-relieving flat iron expansion joint of the present invention;

[0016] Figure 4 This is a top view of a first embodiment of a stress-relieving flat iron expansion joint of the present invention;

[0017] Figure 5 This is a structural schematic diagram of a second embodiment of a stress-relieving flat iron expansion joint of the present invention;

[0018] Figure 6 This is a structural schematic diagram of a third embodiment of a stress-relieving flat iron expansion joint of the present invention.

[0019] In the figure: 1. Deck; 2. Oil-blocking flat iron; 3. Expansion joint; 4. Arched protrusion. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] The orientations mentioned in this specification are based on the orientations of the stress-releasing flat iron expansion joint of the present invention during normal operation, and do not limit the orientations during storage and transportation. They only represent relative positional relationships, not absolute positional relationships.

[0022] like Figures 1 to 4As shown in the figure, a stress-releasing flat iron expansion joint is provided, which surrounds the deck 1 and is vertically fixed to the oil-blocking flat iron 2 on the ship deck 1. The oil-blocking flat iron 2 is used to prevent oil spills from being discharged into the sea and reduce environmental pollution. Several expansion joints 3 are installed at intervals between the oil-blocking flat irons 2. The expansion joint 3 includes a main body connected to the oil-blocking flat iron 2 and an arched protrusion 4 that is wide at the top and narrow at the bottom and is bent outward from the middle of the main body. The upper surface of the arched protrusion 4 is flush with the upper surface of the oil-blocking flat iron 2. When the ship is sailing on the sea, it is affected by factors such as ship loading and wave loads, resulting in a vertical arch, which will exert a large tensile and extrusive pressure on the oil-blocking flat iron 2 arranged on the side of the cargo hold. The tensile and extrusive pressure mainly exists on the upper side of the oil-blocking flat iron 2. The arched protrusion 4 on the expansion joint 3 between the oil-blocking flat irons 2 can effectively buffer the tensile and extrusive pressure, thereby preventing the oil-blocking flat iron 2 from being damaged. The structure of the arched protrusion 4 that is wide at the top and narrow at the bottom can better cater to the situation where the upper part of the oil-blocking flat iron 2 is subjected to greater force.

[0023] like Figure 2 and Figure 3 As shown, in one embodiment, the arched protrusion 4 is conical, and the top of the cone is flush with the lower plane of the oil-blocking flat iron 2, so that the upper part of the arched protrusion 4 can withstand a greater amount of stretching.

[0024] like Figure 5 As shown, in one embodiment, the arched protrusion 4 is conical, and the top of the cone is located above the lower plane of the oil-blocking flat iron 2, making welding easier and the weld smoother.

[0025] like Figure 6 As shown, in one embodiment, the arched protrusion 4 is in the shape of a truncated cone, and the lower surface of the truncated cone is located above the lower plane of the oil-blocking flat iron 2, making processing more convenient.

[0026] Furthermore, the expansion joint 3 is pressed from a flat iron of the same height and thickness as the oil-blocking flat iron 2, making the connection between the expansion joint 3 and the oil-blocking flat iron 2 more convenient, the structure more reasonable and beautiful, and the preparation of raw materials more convenient.

[0027] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A stress-relieving flat iron expansion joint, comprising an oil-blocking flat iron (2) surrounding a deck (1) and vertically fixed to the deck (1) of a ship, characterized in that: A plurality of expansion joints (3) are installed at intervals between the oil-blocking flat irons (2). The expansion joints (3) include a body connected to the oil-blocking flat irons (2) and an arched protrusion (4) bent outward from the middle of the body to form a wide upper part and narrow lower part.

2. A stress-relieving flat iron expansion joint according to claim 1, characterized in that: The arched protrusion (4) is conical, and the top of the cone is flush with the lower plane of the oil-blocking flat iron (2).

3. The stress-relieving flat iron expansion joint according to claim 1, characterized in that: The arched protrusion (4) is conical, and the top of the cone is located above the lower plane of the oil-blocking flat iron (2).

4. A stress-relieving flat iron expansion joint according to claim 1, characterized in that: The arched protrusion (4) is in the shape of a truncated cone, and the lower surface of the truncated cone is located above the lower plane of the oil-blocking flat iron (2).

5. The stress-relieving flat iron expansion joint according to claim 1, characterized in that: The expansion joint (3) is formed by pressing a flat iron having the same height and thickness as the oil-blocking flat iron (2).

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